+++ /dev/null
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software
- * Foundation. See file COPYING.
- *
- */
-
-
-// unix-ey fs stuff
-#include <unistd.h>
-#include <sys/types.h>
-#include <time.h>
-#include <utime.h>
-#include <sys/stat.h>
-#include <sys/param.h>
-#include <fcntl.h>
-#include <sys/file.h>
-#include <sys/utsname.h>
-#include <sys/uio.h>
-
-#include <boost/lexical_cast.hpp>
-#include <boost/fusion/include/std_pair.hpp>
-
-#if defined(__FreeBSD__)
-#define XATTR_CREATE 0x1
-#define XATTR_REPLACE 0x2
-#else
-#include <sys/xattr.h>
-#endif
-
-#if defined(__linux__)
-#include <linux/falloc.h>
-#endif
-
-#include <sys/statvfs.h>
-
-#include "common/config.h"
-#include "common/version.h"
-
-// ceph stuff
-#include "messages/MClientSession.h"
-#include "messages/MClientReconnect.h"
-#include "messages/MClientRequest.h"
-#include "messages/MClientRequestForward.h"
-#include "messages/MClientReply.h"
-#include "messages/MClientCaps.h"
-#include "messages/MClientLease.h"
-#include "messages/MClientSnap.h"
-#include "messages/MCommandReply.h"
-#include "messages/MOSDMap.h"
-#include "messages/MClientQuota.h"
-#include "messages/MClientCapRelease.h"
-#include "messages/MMDSMap.h"
-#include "messages/MFSMap.h"
-#include "messages/MFSMapUser.h"
-
-#include "mon/MonClient.h"
-
-#include "mds/flock.h"
-#include "osd/OSDMap.h"
-#include "osdc/Filer.h"
-
-#include "common/Cond.h"
-#include "common/Mutex.h"
-#include "common/perf_counters.h"
-#include "common/admin_socket.h"
-#include "common/errno.h"
-#include "include/str_list.h"
-
-#define dout_subsys ceph_subsys_client
-
-#include "include/lru.h"
-#include "include/compat.h"
-#include "include/stringify.h"
-
-#include "Client.h"
-#include "Inode.h"
-#include "Dentry.h"
-#include "Dir.h"
-#include "ClientSnapRealm.h"
-#include "Fh.h"
-#include "MetaSession.h"
-#include "MetaRequest.h"
-#include "ObjecterWriteback.h"
-#include "posix_acl.h"
-
-#include "include/assert.h"
-#include "include/stat.h"
-
-#include "include/cephfs/ceph_statx.h"
-
-#if HAVE_GETGROUPLIST
-#include <grp.h>
-#include <pwd.h>
-#include <unistd.h>
-#endif
-
-#undef dout_prefix
-#define dout_prefix *_dout << "client." << whoami << " "
-
-#define tout(cct) if (!cct->_conf->client_trace.empty()) traceout
-
-// FreeBSD fails to define this
-#ifndef O_DSYNC
-#define O_DSYNC 0x0
-#endif
-// Darwin fails to define this
-#ifndef O_RSYNC
-#define O_RSYNC 0x0
-#endif
-
-#ifndef O_DIRECT
-#define O_DIRECT 0x0
-#endif
-
-#define DEBUG_GETATTR_CAPS (CEPH_CAP_XATTR_SHARED)
-
-void client_flush_set_callback(void *p, ObjectCacher::ObjectSet *oset)
-{
- Client *client = static_cast<Client*>(p);
- client->flush_set_callback(oset);
-}
-
-
-// -------------
-
-Client::CommandHook::CommandHook(Client *client) :
- m_client(client)
-{
-}
-
-bool Client::CommandHook::call(std::string command, cmdmap_t& cmdmap,
- std::string format, bufferlist& out)
-{
- Formatter *f = Formatter::create(format);
- f->open_object_section("result");
- m_client->client_lock.Lock();
- if (command == "mds_requests")
- m_client->dump_mds_requests(f);
- else if (command == "mds_sessions")
- m_client->dump_mds_sessions(f);
- else if (command == "dump_cache")
- m_client->dump_cache(f);
- else if (command == "kick_stale_sessions")
- m_client->_kick_stale_sessions();
- else if (command == "status")
- m_client->dump_status(f);
- else
- assert(0 == "bad command registered");
- m_client->client_lock.Unlock();
- f->close_section();
- f->flush(out);
- delete f;
- return true;
-}
-
-
-// -------------
-
-dir_result_t::dir_result_t(Inode *in, const UserPerm& perms)
- : inode(in), offset(0), next_offset(2),
- release_count(0), ordered_count(0), cache_index(0), start_shared_gen(0),
- perms(perms)
- { }
-
-void Client::_reset_faked_inos()
-{
- ino_t start = 1024;
- free_faked_inos.clear();
- free_faked_inos.insert(start, (uint32_t)-1 - start + 1);
- last_used_faked_ino = 0;
- _use_faked_inos = sizeof(ino_t) < 8 || cct->_conf->client_use_faked_inos;
-}
-
-void Client::_assign_faked_ino(Inode *in)
-{
- interval_set<ino_t>::const_iterator it = free_faked_inos.lower_bound(last_used_faked_ino + 1);
- if (it == free_faked_inos.end() && last_used_faked_ino > 0) {
- last_used_faked_ino = 0;
- it = free_faked_inos.lower_bound(last_used_faked_ino + 1);
- }
- assert(it != free_faked_inos.end());
- if (last_used_faked_ino < it.get_start()) {
- assert(it.get_len() > 0);
- last_used_faked_ino = it.get_start();
- } else {
- ++last_used_faked_ino;
- assert(it.get_start() + it.get_len() > last_used_faked_ino);
- }
- in->faked_ino = last_used_faked_ino;
- free_faked_inos.erase(in->faked_ino);
- faked_ino_map[in->faked_ino] = in->vino();
-}
-
-void Client::_release_faked_ino(Inode *in)
-{
- free_faked_inos.insert(in->faked_ino);
- faked_ino_map.erase(in->faked_ino);
-}
-
-vinodeno_t Client::_map_faked_ino(ino_t ino)
-{
- vinodeno_t vino;
- if (ino == 1)
- vino = root->vino();
- else if (faked_ino_map.count(ino))
- vino = faked_ino_map[ino];
- else
- vino = vinodeno_t(0, CEPH_NOSNAP);
- ldout(cct, 10) << "map_faked_ino " << ino << " -> " << vino << dendl;
- return vino;
-}
-
-vinodeno_t Client::map_faked_ino(ino_t ino)
-{
- Mutex::Locker lock(client_lock);
- return _map_faked_ino(ino);
-}
-
-// cons/des
-
-Client::Client(Messenger *m, MonClient *mc, Objecter *objecter_)
- : Dispatcher(m->cct),
- m_command_hook(this),
- timer(m->cct, client_lock),
- callback_handle(NULL),
- switch_interrupt_cb(NULL),
- remount_cb(NULL),
- ino_invalidate_cb(NULL),
- dentry_invalidate_cb(NULL),
- getgroups_cb(NULL),
- umask_cb(NULL),
- can_invalidate_dentries(false),
- require_remount(false),
- async_ino_invalidator(m->cct),
- async_dentry_invalidator(m->cct),
- interrupt_finisher(m->cct),
- remount_finisher(m->cct),
- objecter_finisher(m->cct),
- tick_event(NULL),
- messenger(m), monclient(mc),
- objecter(objecter_),
- whoami(mc->get_global_id()), cap_epoch_barrier(0),
- last_tid(0), oldest_tid(0), last_flush_tid(1),
- initialized(false),
- mounted(false), unmounting(false), blacklisted(false),
- local_osd(-1), local_osd_epoch(0),
- unsafe_sync_write(0),
- client_lock("Client::client_lock")
-{
- _reset_faked_inos();
- //
- root = 0;
-
- num_flushing_caps = 0;
-
- _dir_vxattrs_name_size = _vxattrs_calcu_name_size(_dir_vxattrs);
- _file_vxattrs_name_size = _vxattrs_calcu_name_size(_file_vxattrs);
-
- user_id = cct->_conf->client_mount_uid;
- group_id = cct->_conf->client_mount_gid;
-
- acl_type = NO_ACL;
- if (cct->_conf->client_acl_type == "posix_acl")
- acl_type = POSIX_ACL;
-
- lru.lru_set_midpoint(cct->_conf->client_cache_mid);
-
- // file handles
- free_fd_set.insert(10, 1<<30);
-
- mdsmap.reset(new MDSMap);
-
- // osd interfaces
- writeback_handler.reset(new ObjecterWriteback(objecter, &objecter_finisher,
- &client_lock));
- objectcacher.reset(new ObjectCacher(cct, "libcephfs", *writeback_handler, client_lock,
- client_flush_set_callback, // all commit callback
- (void*)this,
- cct->_conf->client_oc_size,
- cct->_conf->client_oc_max_objects,
- cct->_conf->client_oc_max_dirty,
- cct->_conf->client_oc_target_dirty,
- cct->_conf->client_oc_max_dirty_age,
- true));
- objecter_finisher.start();
- filer.reset(new Filer(objecter, &objecter_finisher));
- objecter->enable_blacklist_events();
-}
-
-
-Client::~Client()
-{
- assert(!client_lock.is_locked());
-
- // It is necessary to hold client_lock, because any inode destruction
- // may call into ObjectCacher, which asserts that it's lock (which is
- // client_lock) is held.
- client_lock.Lock();
- tear_down_cache();
- client_lock.Unlock();
-}
-
-void Client::tear_down_cache()
-{
- // fd's
- for (ceph::unordered_map<int, Fh*>::iterator it = fd_map.begin();
- it != fd_map.end();
- ++it) {
- Fh *fh = it->second;
- ldout(cct, 1) << "tear_down_cache forcing close of fh " << it->first << " ino " << fh->inode->ino << dendl;
- _release_fh(fh);
- }
- fd_map.clear();
-
- while (!opened_dirs.empty()) {
- dir_result_t *dirp = *opened_dirs.begin();
- ldout(cct, 1) << "tear_down_cache forcing close of dir " << dirp << " ino " << dirp->inode->ino << dendl;
- _closedir(dirp);
- }
-
- // caps!
- // *** FIXME ***
-
- // empty lru
- trim_cache();
- assert(lru.lru_get_size() == 0);
-
- // close root ino
- assert(inode_map.size() <= 1 + root_parents.size());
- if (root && inode_map.size() == 1 + root_parents.size()) {
- delete root;
- root = 0;
- root_ancestor = 0;
- while (!root_parents.empty())
- root_parents.erase(root_parents.begin());
- inode_map.clear();
- _reset_faked_inos();
- }
-
- assert(inode_map.empty());
-}
-
-inodeno_t Client::get_root_ino()
-{
- Mutex::Locker l(client_lock);
- if (use_faked_inos())
- return root->faked_ino;
- else
- return root->ino;
-}
-
-Inode *Client::get_root()
-{
- Mutex::Locker l(client_lock);
- root->ll_get();
- return root;
-}
-
-
-// debug crapola
-
-void Client::dump_inode(Formatter *f, Inode *in, set<Inode*>& did, bool disconnected)
-{
- filepath path;
- in->make_long_path(path);
- ldout(cct, 1) << "dump_inode: "
- << (disconnected ? "DISCONNECTED ":"")
- << "inode " << in->ino
- << " " << path
- << " ref " << in->get_num_ref()
- << *in << dendl;
-
- if (f) {
- f->open_object_section("inode");
- f->dump_stream("path") << path;
- if (disconnected)
- f->dump_int("disconnected", 1);
- in->dump(f);
- f->close_section();
- }
-
- did.insert(in);
- if (in->dir) {
- ldout(cct, 1) << " dir " << in->dir << " size " << in->dir->dentries.size() << dendl;
- for (ceph::unordered_map<string, Dentry*>::iterator it = in->dir->dentries.begin();
- it != in->dir->dentries.end();
- ++it) {
- ldout(cct, 1) << " " << in->ino << " dn " << it->first << " " << it->second << " ref " << it->second->ref << dendl;
- if (f) {
- f->open_object_section("dentry");
- it->second->dump(f);
- f->close_section();
- }
- if (it->second->inode)
- dump_inode(f, it->second->inode.get(), did, false);
- }
- }
-}
-
-void Client::dump_cache(Formatter *f)
-{
- set<Inode*> did;
-
- ldout(cct, 1) << "dump_cache" << dendl;
-
- if (f)
- f->open_array_section("cache");
-
- if (root)
- dump_inode(f, root, did, true);
-
- // make a second pass to catch anything disconnected
- for (ceph::unordered_map<vinodeno_t, Inode*>::iterator it = inode_map.begin();
- it != inode_map.end();
- ++it) {
- if (did.count(it->second))
- continue;
- dump_inode(f, it->second, did, true);
- }
-
- if (f)
- f->close_section();
-}
-
-void Client::dump_status(Formatter *f)
-{
- assert(client_lock.is_locked_by_me());
-
- ldout(cct, 1) << __func__ << dendl;
-
- const epoch_t osd_epoch
- = objecter->with_osdmap(std::mem_fn(&OSDMap::get_epoch));
-
- if (f) {
- f->open_object_section("metadata");
- for (const auto& kv : metadata)
- f->dump_string(kv.first.c_str(), kv.second);
- f->close_section();
-
- f->dump_int("dentry_count", lru.lru_get_size());
- f->dump_int("dentry_pinned_count", lru.lru_get_num_pinned());
- f->dump_int("id", get_nodeid().v);
- f->dump_int("inode_count", inode_map.size());
- f->dump_int("mds_epoch", mdsmap->get_epoch());
- f->dump_int("osd_epoch", osd_epoch);
- f->dump_int("osd_epoch_barrier", cap_epoch_barrier);
- }
-}
-
-int Client::init()
-{
- timer.init();
- objectcacher->start();
-
- client_lock.Lock();
- assert(!initialized);
-
- messenger->add_dispatcher_tail(this);
- client_lock.Unlock();
-
- _finish_init();
- return 0;
-}
-
-void Client::_finish_init()
-{
- client_lock.Lock();
- // logger
- PerfCountersBuilder plb(cct, "client", l_c_first, l_c_last);
- plb.add_time_avg(l_c_reply, "reply", "Latency of receiving a reply on metadata request");
- plb.add_time_avg(l_c_lat, "lat", "Latency of processing a metadata request");
- plb.add_time_avg(l_c_wrlat, "wrlat", "Latency of a file data write operation");
- logger.reset(plb.create_perf_counters());
- cct->get_perfcounters_collection()->add(logger.get());
-
- client_lock.Unlock();
-
- cct->_conf->add_observer(this);
-
- AdminSocket* admin_socket = cct->get_admin_socket();
- int ret = admin_socket->register_command("mds_requests",
- "mds_requests",
- &m_command_hook,
- "show in-progress mds requests");
- if (ret < 0) {
- lderr(cct) << "error registering admin socket command: "
- << cpp_strerror(-ret) << dendl;
- }
- ret = admin_socket->register_command("mds_sessions",
- "mds_sessions",
- &m_command_hook,
- "show mds session state");
- if (ret < 0) {
- lderr(cct) << "error registering admin socket command: "
- << cpp_strerror(-ret) << dendl;
- }
- ret = admin_socket->register_command("dump_cache",
- "dump_cache",
- &m_command_hook,
- "show in-memory metadata cache contents");
- if (ret < 0) {
- lderr(cct) << "error registering admin socket command: "
- << cpp_strerror(-ret) << dendl;
- }
- ret = admin_socket->register_command("kick_stale_sessions",
- "kick_stale_sessions",
- &m_command_hook,
- "kick sessions that were remote reset");
- if (ret < 0) {
- lderr(cct) << "error registering admin socket command: "
- << cpp_strerror(-ret) << dendl;
- }
- ret = admin_socket->register_command("status",
- "status",
- &m_command_hook,
- "show overall client status");
- if (ret < 0) {
- lderr(cct) << "error registering admin socket command: "
- << cpp_strerror(-ret) << dendl;
- }
-
- client_lock.Lock();
- initialized = true;
- client_lock.Unlock();
-}
-
-void Client::shutdown()
-{
- ldout(cct, 1) << "shutdown" << dendl;
-
- // If we were not mounted, but were being used for sending
- // MDS commands, we may have sessions that need closing.
- client_lock.Lock();
- _close_sessions();
- client_lock.Unlock();
-
- cct->_conf->remove_observer(this);
-
- AdminSocket* admin_socket = cct->get_admin_socket();
- admin_socket->unregister_command("mds_requests");
- admin_socket->unregister_command("mds_sessions");
- admin_socket->unregister_command("dump_cache");
- admin_socket->unregister_command("kick_stale_sessions");
- admin_socket->unregister_command("status");
-
- if (ino_invalidate_cb) {
- ldout(cct, 10) << "shutdown stopping cache invalidator finisher" << dendl;
- async_ino_invalidator.wait_for_empty();
- async_ino_invalidator.stop();
- }
-
- if (dentry_invalidate_cb) {
- ldout(cct, 10) << "shutdown stopping dentry invalidator finisher" << dendl;
- async_dentry_invalidator.wait_for_empty();
- async_dentry_invalidator.stop();
- }
-
- if (switch_interrupt_cb) {
- ldout(cct, 10) << "shutdown stopping interrupt finisher" << dendl;
- interrupt_finisher.wait_for_empty();
- interrupt_finisher.stop();
- }
-
- if (remount_cb) {
- ldout(cct, 10) << "shutdown stopping remount finisher" << dendl;
- remount_finisher.wait_for_empty();
- remount_finisher.stop();
- }
-
- objectcacher->stop(); // outside of client_lock! this does a join.
-
- client_lock.Lock();
- assert(initialized);
- initialized = false;
- timer.shutdown();
- client_lock.Unlock();
-
- objecter_finisher.wait_for_empty();
- objecter_finisher.stop();
-
- if (logger) {
- cct->get_perfcounters_collection()->remove(logger.get());
- logger.reset();
- }
-}
-
-
-// ===================
-// metadata cache stuff
-
-void Client::trim_cache(bool trim_kernel_dcache)
-{
- uint64_t max = cct->_conf->client_cache_size;
- ldout(cct, 20) << "trim_cache size " << lru.lru_get_size() << " max " << max << dendl;
- unsigned last = 0;
- while (lru.lru_get_size() != last) {
- last = lru.lru_get_size();
-
- if (!unmounting && lru.lru_get_size() <= max) break;
-
- // trim!
- Dentry *dn = static_cast<Dentry*>(lru.lru_get_next_expire());
- if (!dn)
- break; // done
-
- trim_dentry(dn);
- }
-
- if (trim_kernel_dcache && lru.lru_get_size() > max)
- _invalidate_kernel_dcache();
-
- // hose root?
- if (lru.lru_get_size() == 0 && root && root->get_num_ref() == 0 && inode_map.size() == 1 + root_parents.size()) {
- ldout(cct, 15) << "trim_cache trimmed root " << root << dendl;
- delete root;
- root = 0;
- root_ancestor = 0;
- while (!root_parents.empty())
- root_parents.erase(root_parents.begin());
- inode_map.clear();
- _reset_faked_inos();
- }
-}
-
-void Client::trim_cache_for_reconnect(MetaSession *s)
-{
- mds_rank_t mds = s->mds_num;
- ldout(cct, 20) << "trim_cache_for_reconnect mds." << mds << dendl;
-
- int trimmed = 0;
- list<Dentry*> skipped;
- while (lru.lru_get_size() > 0) {
- Dentry *dn = static_cast<Dentry*>(lru.lru_expire());
- if (!dn)
- break;
-
- if ((dn->inode && dn->inode->caps.count(mds)) ||
- dn->dir->parent_inode->caps.count(mds)) {
- trim_dentry(dn);
- trimmed++;
- } else
- skipped.push_back(dn);
- }
-
- for(list<Dentry*>::iterator p = skipped.begin(); p != skipped.end(); ++p)
- lru.lru_insert_mid(*p);
-
- ldout(cct, 20) << "trim_cache_for_reconnect mds." << mds
- << " trimmed " << trimmed << " dentries" << dendl;
-
- if (s->caps.size() > 0)
- _invalidate_kernel_dcache();
-}
-
-void Client::trim_dentry(Dentry *dn)
-{
- ldout(cct, 15) << "trim_dentry unlinking dn " << dn->name
- << " in dir " << hex << dn->dir->parent_inode->ino
- << dendl;
- if (dn->inode) {
- Inode *diri = dn->dir->parent_inode;
- diri->dir_release_count++;
- clear_dir_complete_and_ordered(diri, true);
- }
- unlink(dn, false, false); // drop dir, drop dentry
-}
-
-
-void Client::update_inode_file_bits(Inode *in,
- uint64_t truncate_seq, uint64_t truncate_size,
- uint64_t size, uint64_t change_attr,
- uint64_t time_warp_seq, utime_t ctime,
- utime_t mtime,
- utime_t atime,
- version_t inline_version,
- bufferlist& inline_data,
- int issued)
-{
- bool warn = false;
- ldout(cct, 10) << "update_inode_file_bits " << *in << " " << ccap_string(issued)
- << " mtime " << mtime << dendl;
- ldout(cct, 25) << "truncate_seq: mds " << truncate_seq << " local "
- << in->truncate_seq << " time_warp_seq: mds " << time_warp_seq
- << " local " << in->time_warp_seq << dendl;
- uint64_t prior_size = in->size;
-
- if (inline_version > in->inline_version) {
- in->inline_data = inline_data;
- in->inline_version = inline_version;
- }
-
- /* always take a newer change attr */
- if (change_attr > in->change_attr)
- in->change_attr = change_attr;
-
- if (truncate_seq > in->truncate_seq ||
- (truncate_seq == in->truncate_seq && size > in->size)) {
- ldout(cct, 10) << "size " << in->size << " -> " << size << dendl;
- in->size = size;
- in->reported_size = size;
- if (truncate_seq != in->truncate_seq) {
- ldout(cct, 10) << "truncate_seq " << in->truncate_seq << " -> "
- << truncate_seq << dendl;
- in->truncate_seq = truncate_seq;
- in->oset.truncate_seq = truncate_seq;
-
- // truncate cached file data
- if (prior_size > size) {
- _invalidate_inode_cache(in, truncate_size, prior_size - truncate_size);
- }
- }
-
- // truncate inline data
- if (in->inline_version < CEPH_INLINE_NONE) {
- uint32_t len = in->inline_data.length();
- if (size < len)
- in->inline_data.splice(size, len - size);
- }
- }
- if (truncate_seq >= in->truncate_seq &&
- in->truncate_size != truncate_size) {
- if (in->is_file()) {
- ldout(cct, 10) << "truncate_size " << in->truncate_size << " -> "
- << truncate_size << dendl;
- in->truncate_size = truncate_size;
- in->oset.truncate_size = truncate_size;
- } else {
- ldout(cct, 0) << "Hmmm, truncate_seq && truncate_size changed on non-file inode!" << dendl;
- }
- }
-
- // be careful with size, mtime, atime
- if (issued & (CEPH_CAP_FILE_EXCL|
- CEPH_CAP_FILE_WR|
- CEPH_CAP_FILE_BUFFER|
- CEPH_CAP_AUTH_EXCL|
- CEPH_CAP_XATTR_EXCL)) {
- ldout(cct, 30) << "Yay have enough caps to look at our times" << dendl;
- if (ctime > in->ctime)
- in->ctime = ctime;
- if (time_warp_seq > in->time_warp_seq) {
- ldout(cct, 10) << "mds time_warp_seq " << time_warp_seq << " on inode " << *in
- << " is higher than local time_warp_seq "
- << in->time_warp_seq << dendl;
- //the mds updated times, so take those!
- in->mtime = mtime;
- in->atime = atime;
- in->time_warp_seq = time_warp_seq;
- } else if (time_warp_seq == in->time_warp_seq) {
- //take max times
- if (mtime > in->mtime)
- in->mtime = mtime;
- if (atime > in->atime)
- in->atime = atime;
- } else if (issued & CEPH_CAP_FILE_EXCL) {
- //ignore mds values as we have a higher seq
- } else warn = true;
- } else {
- ldout(cct, 30) << "Don't have enough caps, just taking mds' time values" << dendl;
- if (time_warp_seq >= in->time_warp_seq) {
- in->ctime = ctime;
- in->mtime = mtime;
- in->atime = atime;
- in->time_warp_seq = time_warp_seq;
- } else warn = true;
- }
- if (warn) {
- ldout(cct, 0) << "WARNING: " << *in << " mds time_warp_seq "
- << time_warp_seq << " is lower than local time_warp_seq "
- << in->time_warp_seq
- << dendl;
- }
-}
-
-void Client::_fragmap_remove_non_leaves(Inode *in)
-{
- for (map<frag_t,int>::iterator p = in->fragmap.begin(); p != in->fragmap.end(); )
- if (!in->dirfragtree.is_leaf(p->first))
- in->fragmap.erase(p++);
- else
- ++p;
-}
-
-void Client::_fragmap_remove_stopped_mds(Inode *in, mds_rank_t mds)
-{
- for (auto p = in->fragmap.begin(); p != in->fragmap.end(); )
- if (p->second == mds)
- in->fragmap.erase(p++);
- else
- ++p;
-}
-
-Inode * Client::add_update_inode(InodeStat *st, utime_t from,
- MetaSession *session,
- const UserPerm& request_perms)
-{
- Inode *in;
- bool was_new = false;
- if (inode_map.count(st->vino)) {
- in = inode_map[st->vino];
- ldout(cct, 12) << "add_update_inode had " << *in << " caps " << ccap_string(st->cap.caps) << dendl;
- } else {
- in = new Inode(this, st->vino, &st->layout);
- inode_map[st->vino] = in;
-
- if (use_faked_inos())
- _assign_faked_ino(in);
-
- if (!root) {
- root = in;
- root_ancestor = in;
- cwd = root;
- } else if (!mounted) {
- root_parents[root_ancestor] = in;
- root_ancestor = in;
- }
-
- // immutable bits
- in->ino = st->vino.ino;
- in->snapid = st->vino.snapid;
- in->mode = st->mode & S_IFMT;
- was_new = true;
- }
-
- in->rdev = st->rdev;
- if (in->is_symlink())
- in->symlink = st->symlink;
-
- if (was_new)
- ldout(cct, 12) << "add_update_inode adding " << *in << " caps " << ccap_string(st->cap.caps) << dendl;
-
- if (!st->cap.caps)
- return in; // as with readdir returning indoes in different snaprealms (no caps!)
-
- // only update inode if mds info is strictly newer, or it is the same and projected (odd).
- bool updating_inode = false;
- int issued = 0;
- if (st->version == 0 ||
- (in->version & ~1) < st->version) {
- updating_inode = true;
-
- int implemented = 0;
- issued = in->caps_issued(&implemented) | in->caps_dirty();
- issued |= implemented;
-
- in->version = st->version;
-
- if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
- in->mode = st->mode;
- in->uid = st->uid;
- in->gid = st->gid;
- in->btime = st->btime;
- }
-
- if ((issued & CEPH_CAP_LINK_EXCL) == 0) {
- in->nlink = st->nlink;
- }
-
- in->dirstat = st->dirstat;
- in->rstat = st->rstat;
- in->quota = st->quota;
- in->layout = st->layout;
-
- if (in->is_dir()) {
- in->dir_layout = st->dir_layout;
- ldout(cct, 20) << " dir hash is " << (int)in->dir_layout.dl_dir_hash << dendl;
- }
-
- update_inode_file_bits(in, st->truncate_seq, st->truncate_size, st->size,
- st->change_attr, st->time_warp_seq, st->ctime,
- st->mtime, st->atime, st->inline_version,
- st->inline_data, issued);
- } else if (st->inline_version > in->inline_version) {
- in->inline_data = st->inline_data;
- in->inline_version = st->inline_version;
- }
-
- if ((in->xattr_version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) &&
- st->xattrbl.length() &&
- st->xattr_version > in->xattr_version) {
- bufferlist::iterator p = st->xattrbl.begin();
- ::decode(in->xattrs, p);
- in->xattr_version = st->xattr_version;
- }
-
- // move me if/when version reflects fragtree changes.
- if (in->dirfragtree != st->dirfragtree) {
- in->dirfragtree = st->dirfragtree;
- _fragmap_remove_non_leaves(in);
- }
-
- if (in->snapid == CEPH_NOSNAP) {
- add_update_cap(in, session, st->cap.cap_id, st->cap.caps, st->cap.seq,
- st->cap.mseq, inodeno_t(st->cap.realm), st->cap.flags,
- request_perms);
- if (in->auth_cap && in->auth_cap->session == session)
- in->max_size = st->max_size;
- } else
- in->snap_caps |= st->cap.caps;
-
- // setting I_COMPLETE needs to happen after adding the cap
- if (updating_inode &&
- in->is_dir() &&
- (st->cap.caps & CEPH_CAP_FILE_SHARED) &&
- (issued & CEPH_CAP_FILE_EXCL) == 0 &&
- in->dirstat.nfiles == 0 &&
- in->dirstat.nsubdirs == 0) {
- ldout(cct, 10) << " marking (I_COMPLETE|I_DIR_ORDERED) on empty dir " << *in << dendl;
- in->flags |= I_COMPLETE | I_DIR_ORDERED;
- if (in->dir) {
- ldout(cct, 10) << " dir is open on empty dir " << in->ino << " with "
- << in->dir->dentries.size() << " entries, marking all dentries null" << dendl;
- in->dir->readdir_cache.clear();
- for (auto p = in->dir->dentries.begin();
- p != in->dir->dentries.end();
- ++p) {
- unlink(p->second, true, true); // keep dir, keep dentry
- }
- if (in->dir->dentries.empty())
- close_dir(in->dir);
- }
- }
-
- return in;
-}
-
-
-/*
- * insert_dentry_inode - insert + link a single dentry + inode into the metadata cache.
- */
-Dentry *Client::insert_dentry_inode(Dir *dir, const string& dname, LeaseStat *dlease,
- Inode *in, utime_t from, MetaSession *session,
- Dentry *old_dentry)
-{
- Dentry *dn = NULL;
- if (dir->dentries.count(dname))
- dn = dir->dentries[dname];
-
- ldout(cct, 12) << "insert_dentry_inode '" << dname << "' vino " << in->vino()
- << " in dir " << dir->parent_inode->vino() << " dn " << dn
- << dendl;
-
- if (dn && dn->inode) {
- if (dn->inode->vino() == in->vino()) {
- touch_dn(dn);
- ldout(cct, 12) << " had dentry " << dname
- << " with correct vino " << dn->inode->vino()
- << dendl;
- } else {
- ldout(cct, 12) << " had dentry " << dname
- << " with WRONG vino " << dn->inode->vino()
- << dendl;
- unlink(dn, true, true); // keep dir, keep dentry
- }
- }
-
- if (!dn || !dn->inode) {
- InodeRef tmp_ref(in);
- if (old_dentry) {
- if (old_dentry->dir != dir) {
- Inode *old_diri = old_dentry->dir->parent_inode;
- old_diri->dir_ordered_count++;
- clear_dir_complete_and_ordered(old_diri, false);
- }
- unlink(old_dentry, dir == old_dentry->dir, false); // drop dentry, keep dir open if its the same dir
- }
- Inode *diri = dir->parent_inode;
- diri->dir_ordered_count++;
- clear_dir_complete_and_ordered(diri, false);
- dn = link(dir, dname, in, dn);
- }
-
- update_dentry_lease(dn, dlease, from, session);
- return dn;
-}
-
-void Client::update_dentry_lease(Dentry *dn, LeaseStat *dlease, utime_t from, MetaSession *session)
-{
- utime_t dttl = from;
- dttl += (float)dlease->duration_ms / 1000.0;
-
- assert(dn);
-
- if (dlease->mask & CEPH_LOCK_DN) {
- if (dttl > dn->lease_ttl) {
- ldout(cct, 10) << "got dentry lease on " << dn->name
- << " dur " << dlease->duration_ms << "ms ttl " << dttl << dendl;
- dn->lease_ttl = dttl;
- dn->lease_mds = session->mds_num;
- dn->lease_seq = dlease->seq;
- dn->lease_gen = session->cap_gen;
- }
- }
- dn->cap_shared_gen = dn->dir->parent_inode->shared_gen;
-}
-
-
-/*
- * update MDS location cache for a single inode
- */
-void Client::update_dir_dist(Inode *in, DirStat *dst)
-{
- // auth
- ldout(cct, 20) << "got dirfrag map for " << in->ino << " frag " << dst->frag << " to mds " << dst->auth << dendl;
- if (dst->auth >= 0) {
- in->fragmap[dst->frag] = dst->auth;
- } else {
- in->fragmap.erase(dst->frag);
- }
- if (!in->dirfragtree.is_leaf(dst->frag)) {
- in->dirfragtree.force_to_leaf(cct, dst->frag);
- _fragmap_remove_non_leaves(in);
- }
-
- // replicated
- in->dir_replicated = !dst->dist.empty(); // FIXME that's just one frag!
-
- // dist
- /*
- if (!st->dirfrag_dist.empty()) { // FIXME
- set<int> dist = st->dirfrag_dist.begin()->second;
- if (dist.empty() && !in->dir_contacts.empty())
- ldout(cct, 9) << "lost dist spec for " << in->ino
- << " " << dist << dendl;
- if (!dist.empty() && in->dir_contacts.empty())
- ldout(cct, 9) << "got dist spec for " << in->ino
- << " " << dist << dendl;
- in->dir_contacts = dist;
- }
- */
-}
-
-void Client::clear_dir_complete_and_ordered(Inode *diri, bool complete)
-{
- if (diri->flags & I_COMPLETE) {
- if (complete) {
- ldout(cct, 10) << " clearing (I_COMPLETE|I_DIR_ORDERED) on " << *diri << dendl;
- diri->flags &= ~(I_COMPLETE | I_DIR_ORDERED);
- } else {
- if (diri->flags & I_DIR_ORDERED) {
- ldout(cct, 10) << " clearing I_DIR_ORDERED on " << *diri << dendl;
- diri->flags &= ~I_DIR_ORDERED;
- }
- }
- if (diri->dir)
- diri->dir->readdir_cache.clear();
- }
-}
-
-/*
- * insert results from readdir or lssnap into the metadata cache.
- */
-void Client::insert_readdir_results(MetaRequest *request, MetaSession *session, Inode *diri) {
-
- MClientReply *reply = request->reply;
- ConnectionRef con = request->reply->get_connection();
- uint64_t features = con->get_features();
-
- dir_result_t *dirp = request->dirp;
- assert(dirp);
-
- // the extra buffer list is only set for readdir and lssnap replies
- bufferlist::iterator p = reply->get_extra_bl().begin();
- if (!p.end()) {
- // snapdir?
- if (request->head.op == CEPH_MDS_OP_LSSNAP) {
- assert(diri);
- diri = open_snapdir(diri);
- }
-
- // only open dir if we're actually adding stuff to it!
- Dir *dir = diri->open_dir();
- assert(dir);
-
- // dirstat
- DirStat dst(p);
- __u32 numdn;
- __u16 flags;
- ::decode(numdn, p);
- ::decode(flags, p);
-
- bool end = ((unsigned)flags & CEPH_READDIR_FRAG_END);
- bool hash_order = ((unsigned)flags & CEPH_READDIR_HASH_ORDER);
-
- frag_t fg = (unsigned)request->head.args.readdir.frag;
- unsigned readdir_offset = dirp->next_offset;
- string readdir_start = dirp->last_name;
- assert(!readdir_start.empty() || readdir_offset == 2);
-
- unsigned last_hash = 0;
- if (hash_order) {
- if (!readdir_start.empty()) {
- last_hash = ceph_frag_value(diri->hash_dentry_name(readdir_start));
- } else if (flags & CEPH_READDIR_OFFSET_HASH) {
- /* mds understands offset_hash */
- last_hash = (unsigned)request->head.args.readdir.offset_hash;
- }
- }
-
- if (fg != dst.frag) {
- ldout(cct, 10) << "insert_trace got new frag " << fg << " -> " << dst.frag << dendl;
- fg = dst.frag;
- if (!hash_order) {
- readdir_offset = 2;
- readdir_start.clear();
- dirp->offset = dir_result_t::make_fpos(fg, readdir_offset, false);
- }
- }
-
- ldout(cct, 10) << __func__ << " " << numdn << " readdir items, end=" << end
- << ", hash_order=" << hash_order
- << ", readdir_start " << readdir_start
- << ", last_hash " << last_hash
- << ", next_offset " << readdir_offset << dendl;
-
- if (diri->snapid != CEPH_SNAPDIR &&
- fg.is_leftmost() && readdir_offset == 2 &&
- !(hash_order && last_hash)) {
- dirp->release_count = diri->dir_release_count;
- dirp->ordered_count = diri->dir_ordered_count;
- dirp->start_shared_gen = diri->shared_gen;
- dirp->cache_index = 0;
- }
-
- dirp->buffer_frag = fg;
-
- _readdir_drop_dirp_buffer(dirp);
- dirp->buffer.reserve(numdn);
-
- string dname;
- LeaseStat dlease;
- for (unsigned i=0; i<numdn; i++) {
- ::decode(dname, p);
- ::decode(dlease, p);
- InodeStat ist(p, features);
-
- ldout(cct, 15) << "" << i << ": '" << dname << "'" << dendl;
-
- Inode *in = add_update_inode(&ist, request->sent_stamp, session,
- request->perms);
- Dentry *dn;
- if (diri->dir->dentries.count(dname)) {
- Dentry *olddn = diri->dir->dentries[dname];
- if (olddn->inode != in) {
- // replace incorrect dentry
- unlink(olddn, true, true); // keep dir, dentry
- dn = link(dir, dname, in, olddn);
- assert(dn == olddn);
- } else {
- // keep existing dn
- dn = olddn;
- touch_dn(dn);
- }
- } else {
- // new dn
- dn = link(dir, dname, in, NULL);
- }
-
- update_dentry_lease(dn, &dlease, request->sent_stamp, session);
- if (hash_order) {
- unsigned hash = ceph_frag_value(diri->hash_dentry_name(dname));
- if (hash != last_hash)
- readdir_offset = 2;
- last_hash = hash;
- dn->offset = dir_result_t::make_fpos(hash, readdir_offset++, true);
- } else {
- dn->offset = dir_result_t::make_fpos(fg, readdir_offset++, false);
- }
- // add to readdir cache
- if (dirp->release_count == diri->dir_release_count &&
- dirp->ordered_count == diri->dir_ordered_count &&
- dirp->start_shared_gen == diri->shared_gen) {
- if (dirp->cache_index == dir->readdir_cache.size()) {
- if (i == 0) {
- assert(!dirp->inode->is_complete_and_ordered());
- dir->readdir_cache.reserve(dirp->cache_index + numdn);
- }
- dir->readdir_cache.push_back(dn);
- } else if (dirp->cache_index < dir->readdir_cache.size()) {
- if (dirp->inode->is_complete_and_ordered())
- assert(dir->readdir_cache[dirp->cache_index] == dn);
- else
- dir->readdir_cache[dirp->cache_index] = dn;
- } else {
- assert(0 == "unexpected readdir buffer idx");
- }
- dirp->cache_index++;
- }
- // add to cached result list
- dirp->buffer.push_back(dir_result_t::dentry(dn->offset, dname, in));
- ldout(cct, 15) << __func__ << " " << hex << dn->offset << dec << ": '" << dname << "' -> " << in->ino << dendl;
- }
-
- if (numdn > 0)
- dirp->last_name = dname;
- if (end)
- dirp->next_offset = 2;
- else
- dirp->next_offset = readdir_offset;
-
- if (dir->is_empty())
- close_dir(dir);
- }
-}
-
-/** insert_trace
- *
- * insert a trace from a MDS reply into the cache.
- */
-Inode* Client::insert_trace(MetaRequest *request, MetaSession *session)
-{
- MClientReply *reply = request->reply;
- int op = request->get_op();
-
- ldout(cct, 10) << "insert_trace from " << request->sent_stamp << " mds." << session->mds_num
- << " is_target=" << (int)reply->head.is_target
- << " is_dentry=" << (int)reply->head.is_dentry
- << dendl;
-
- bufferlist::iterator p = reply->get_trace_bl().begin();
- if (request->got_unsafe) {
- ldout(cct, 10) << "insert_trace -- already got unsafe; ignoring" << dendl;
- assert(p.end());
- return NULL;
- }
-
- if (p.end()) {
- ldout(cct, 10) << "insert_trace -- no trace" << dendl;
-
- Dentry *d = request->dentry();
- if (d) {
- Inode *diri = d->dir->parent_inode;
- diri->dir_release_count++;
- clear_dir_complete_and_ordered(diri, true);
- }
-
- if (d && reply->get_result() == 0) {
- if (op == CEPH_MDS_OP_RENAME) {
- // rename
- Dentry *od = request->old_dentry();
- ldout(cct, 10) << " unlinking rename src dn " << od << " for traceless reply" << dendl;
- assert(od);
- unlink(od, true, true); // keep dir, dentry
- } else if (op == CEPH_MDS_OP_RMDIR ||
- op == CEPH_MDS_OP_UNLINK) {
- // unlink, rmdir
- ldout(cct, 10) << " unlinking unlink/rmdir dn " << d << " for traceless reply" << dendl;
- unlink(d, true, true); // keep dir, dentry
- }
- }
- return NULL;
- }
-
- ConnectionRef con = request->reply->get_connection();
- uint64_t features = con->get_features();
- ldout(cct, 10) << " features 0x" << hex << features << dec << dendl;
-
- // snap trace
- SnapRealm *realm = NULL;
- if (reply->snapbl.length())
- update_snap_trace(reply->snapbl, &realm);
-
- ldout(cct, 10) << " hrm "
- << " is_target=" << (int)reply->head.is_target
- << " is_dentry=" << (int)reply->head.is_dentry
- << dendl;
-
- InodeStat dirst;
- DirStat dst;
- string dname;
- LeaseStat dlease;
- InodeStat ist;
-
- if (reply->head.is_dentry) {
- dirst.decode(p, features);
- dst.decode(p);
- ::decode(dname, p);
- ::decode(dlease, p);
- }
-
- Inode *in = 0;
- if (reply->head.is_target) {
- ist.decode(p, features);
- if (cct->_conf->client_debug_getattr_caps) {
- unsigned wanted = 0;
- if (op == CEPH_MDS_OP_GETATTR || op == CEPH_MDS_OP_LOOKUP)
- wanted = request->head.args.getattr.mask;
- else if (op == CEPH_MDS_OP_OPEN || op == CEPH_MDS_OP_CREATE)
- wanted = request->head.args.open.mask;
-
- if ((wanted & CEPH_CAP_XATTR_SHARED) &&
- !(ist.xattr_version > 0 && ist.xattrbl.length() > 0))
- assert(0 == "MDS reply does not contain xattrs");
- }
-
- in = add_update_inode(&ist, request->sent_stamp, session,
- request->perms);
- }
-
- Inode *diri = NULL;
- if (reply->head.is_dentry) {
- diri = add_update_inode(&dirst, request->sent_stamp, session,
- request->perms);
- update_dir_dist(diri, &dst); // dir stat info is attached to ..
-
- if (in) {
- Dir *dir = diri->open_dir();
- insert_dentry_inode(dir, dname, &dlease, in, request->sent_stamp, session,
- (op == CEPH_MDS_OP_RENAME) ? request->old_dentry() : NULL);
- } else {
- Dentry *dn = NULL;
- if (diri->dir && diri->dir->dentries.count(dname)) {
- dn = diri->dir->dentries[dname];
- if (dn->inode) {
- diri->dir_ordered_count++;
- clear_dir_complete_and_ordered(diri, false);
- unlink(dn, true, true); // keep dir, dentry
- }
- }
- if (dlease.duration_ms > 0) {
- if (!dn) {
- Dir *dir = diri->open_dir();
- dn = link(dir, dname, NULL, NULL);
- }
- update_dentry_lease(dn, &dlease, request->sent_stamp, session);
- }
- }
- } else if (op == CEPH_MDS_OP_LOOKUPSNAP ||
- op == CEPH_MDS_OP_MKSNAP) {
- ldout(cct, 10) << " faking snap lookup weirdness" << dendl;
- // fake it for snap lookup
- vinodeno_t vino = ist.vino;
- vino.snapid = CEPH_SNAPDIR;
- assert(inode_map.count(vino));
- diri = inode_map[vino];
-
- string dname = request->path.last_dentry();
-
- LeaseStat dlease;
- dlease.duration_ms = 0;
-
- if (in) {
- Dir *dir = diri->open_dir();
- insert_dentry_inode(dir, dname, &dlease, in, request->sent_stamp, session);
- } else {
- if (diri->dir && diri->dir->dentries.count(dname)) {
- Dentry *dn = diri->dir->dentries[dname];
- if (dn->inode)
- unlink(dn, true, true); // keep dir, dentry
- }
- }
- }
-
- if (in) {
- if (op == CEPH_MDS_OP_READDIR ||
- op == CEPH_MDS_OP_LSSNAP) {
- insert_readdir_results(request, session, in);
- } else if (op == CEPH_MDS_OP_LOOKUPNAME) {
- // hack: return parent inode instead
- in = diri;
- }
-
- if (request->dentry() == NULL && in != request->inode()) {
- // pin the target inode if its parent dentry is not pinned
- request->set_other_inode(in);
- }
- }
-
- if (realm)
- put_snap_realm(realm);
-
- request->target = in;
- return in;
-}
-
-// -------
-
-mds_rank_t Client::choose_target_mds(MetaRequest *req, Inode** phash_diri)
-{
- mds_rank_t mds = MDS_RANK_NONE;
- __u32 hash = 0;
- bool is_hash = false;
-
- Inode *in = NULL;
- Dentry *de = NULL;
- Cap *cap = NULL;
-
- if (req->resend_mds >= 0) {
- mds = req->resend_mds;
- req->resend_mds = -1;
- ldout(cct, 10) << "choose_target_mds resend_mds specified as mds." << mds << dendl;
- goto out;
- }
-
- if (cct->_conf->client_use_random_mds)
- goto random_mds;
-
- in = req->inode();
- de = req->dentry();
- if (in) {
- ldout(cct, 20) << "choose_target_mds starting with req->inode " << *in << dendl;
- if (req->path.depth()) {
- hash = in->hash_dentry_name(req->path[0]);
- ldout(cct, 20) << "choose_target_mds inode dir hash is " << (int)in->dir_layout.dl_dir_hash
- << " on " << req->path[0]
- << " => " << hash << dendl;
- is_hash = true;
- }
- } else if (de) {
- if (de->inode) {
- in = de->inode.get();
- ldout(cct, 20) << "choose_target_mds starting with req->dentry inode " << *in << dendl;
- } else {
- in = de->dir->parent_inode;
- hash = in->hash_dentry_name(de->name);
- ldout(cct, 20) << "choose_target_mds dentry dir hash is " << (int)in->dir_layout.dl_dir_hash
- << " on " << de->name
- << " => " << hash << dendl;
- is_hash = true;
- }
- }
- if (in) {
- if (in->snapid != CEPH_NOSNAP) {
- ldout(cct, 10) << "choose_target_mds " << *in << " is snapped, using nonsnap parent" << dendl;
- while (in->snapid != CEPH_NOSNAP) {
- if (in->snapid == CEPH_SNAPDIR)
- in = in->snapdir_parent.get();
- else if (!in->dn_set.empty())
- /* In most cases there will only be one dentry, so getting it
- * will be the correct action. If there are multiple hard links,
- * I think the MDS should be able to redirect as needed*/
- in = in->get_first_parent()->dir->parent_inode;
- else {
- ldout(cct, 10) << "got unlinked inode, can't look at parent" << dendl;
- break;
- }
- }
- is_hash = false;
- }
-
- ldout(cct, 20) << "choose_target_mds " << *in << " is_hash=" << is_hash
- << " hash=" << hash << dendl;
-
- if (is_hash && S_ISDIR(in->mode) && !in->fragmap.empty()) {
- frag_t fg = in->dirfragtree[hash];
- if (in->fragmap.count(fg)) {
- mds = in->fragmap[fg];
- if (phash_diri)
- *phash_diri = in;
- ldout(cct, 10) << "choose_target_mds from dirfragtree hash" << dendl;
- goto out;
- }
- }
-
- if (req->auth_is_best())
- cap = in->auth_cap;
- if (!cap && !in->caps.empty())
- cap = in->caps.begin()->second;
- if (!cap)
- goto random_mds;
- mds = cap->session->mds_num;
- ldout(cct, 10) << "choose_target_mds from caps on inode " << *in << dendl;
-
- goto out;
- }
-
-random_mds:
- if (mds < 0) {
- mds = _get_random_up_mds();
- ldout(cct, 10) << "did not get mds through better means, so chose random mds " << mds << dendl;
- }
-
-out:
- ldout(cct, 20) << "mds is " << mds << dendl;
- return mds;
-}
-
-
-void Client::connect_mds_targets(mds_rank_t mds)
-{
- ldout(cct, 10) << "connect_mds_targets for mds." << mds << dendl;
- assert(mds_sessions.count(mds));
- const MDSMap::mds_info_t& info = mdsmap->get_mds_info(mds);
- for (set<mds_rank_t>::const_iterator q = info.export_targets.begin();
- q != info.export_targets.end();
- ++q) {
- if (mds_sessions.count(*q) == 0 &&
- mdsmap->is_clientreplay_or_active_or_stopping(*q)) {
- ldout(cct, 10) << "check_mds_sessions opening mds." << mds
- << " export target mds." << *q << dendl;
- _open_mds_session(*q);
- }
- }
-}
-
-void Client::dump_mds_sessions(Formatter *f)
-{
- f->dump_int("id", get_nodeid().v);
- f->open_array_section("sessions");
- for (map<mds_rank_t,MetaSession*>::const_iterator p = mds_sessions.begin(); p != mds_sessions.end(); ++p) {
- f->open_object_section("session");
- p->second->dump(f);
- f->close_section();
- }
- f->close_section();
- f->dump_int("mdsmap_epoch", mdsmap->get_epoch());
-}
-void Client::dump_mds_requests(Formatter *f)
-{
- for (map<ceph_tid_t, MetaRequest*>::iterator p = mds_requests.begin();
- p != mds_requests.end();
- ++p) {
- f->open_object_section("request");
- p->second->dump(f);
- f->close_section();
- }
-}
-
-int Client::verify_reply_trace(int r,
- MetaRequest *request, MClientReply *reply,
- InodeRef *ptarget, bool *pcreated,
- const UserPerm& perms)
-{
- // check whether this request actually did the create, and set created flag
- bufferlist extra_bl;
- inodeno_t created_ino;
- bool got_created_ino = false;
- ceph::unordered_map<vinodeno_t, Inode*>::iterator p;
-
- extra_bl.claim(reply->get_extra_bl());
- if (extra_bl.length() >= 8) {
- // if the extra bufferlist has a buffer, we assume its the created inode
- // and that this request to create succeeded in actually creating
- // the inode (won the race with other create requests)
- ::decode(created_ino, extra_bl);
- got_created_ino = true;
- ldout(cct, 10) << "make_request created ino " << created_ino << dendl;
- }
-
- if (pcreated)
- *pcreated = got_created_ino;
-
- if (request->target) {
- *ptarget = request->target;
- ldout(cct, 20) << "make_request target is " << *ptarget->get() << dendl;
- } else {
- if (got_created_ino && (p = inode_map.find(vinodeno_t(created_ino, CEPH_NOSNAP))) != inode_map.end()) {
- (*ptarget) = p->second;
- ldout(cct, 20) << "make_request created, target is " << *ptarget->get() << dendl;
- } else {
- // we got a traceless reply, and need to look up what we just
- // created. for now, do this by name. someday, do this by the
- // ino... which we know! FIXME.
- InodeRef target;
- Dentry *d = request->dentry();
- if (d) {
- if (d->dir) {
- ldout(cct, 10) << "make_request got traceless reply, looking up #"
- << d->dir->parent_inode->ino << "/" << d->name
- << " got_ino " << got_created_ino
- << " ino " << created_ino
- << dendl;
- r = _do_lookup(d->dir->parent_inode, d->name, request->regetattr_mask,
- &target, perms);
- } else {
- // if the dentry is not linked, just do our best. see #5021.
- assert(0 == "how did this happen? i want logs!");
- }
- } else {
- Inode *in = request->inode();
- ldout(cct, 10) << "make_request got traceless reply, forcing getattr on #"
- << in->ino << dendl;
- r = _getattr(in, request->regetattr_mask, perms, true);
- target = in;
- }
- if (r >= 0) {
- // verify ino returned in reply and trace_dist are the same
- if (got_created_ino &&
- created_ino.val != target->ino.val) {
- ldout(cct, 5) << "create got ino " << created_ino << " but then failed on lookup; EINTR?" << dendl;
- r = -EINTR;
- }
- if (ptarget)
- ptarget->swap(target);
- }
- }
- }
-
- return r;
-}
-
-
-/**
- * make a request
- *
- * Blocking helper to make an MDS request.
- *
- * If the ptarget flag is set, behavior changes slightly: the caller
- * expects to get a pointer to the inode we are creating or operating
- * on. As a result, we will follow up any traceless mutation reply
- * with a getattr or lookup to transparently handle a traceless reply
- * from the MDS (as when the MDS restarts and the client has to replay
- * a request).
- *
- * @param request the MetaRequest to execute
- * @param perms The user uid/gid to execute as (eventually, full group lists?)
- * @param ptarget [optional] address to store a pointer to the target inode we want to create or operate on
- * @param pcreated [optional; required if ptarget] where to store a bool of whether our create atomically created a file
- * @param use_mds [optional] prefer a specific mds (-1 for default)
- * @param pdirbl [optional; disallowed if ptarget] where to pass extra reply payload to the caller
- */
-int Client::make_request(MetaRequest *request,
- const UserPerm& perms,
- InodeRef *ptarget, bool *pcreated,
- mds_rank_t use_mds,
- bufferlist *pdirbl)
-{
- int r = 0;
-
- // assign a unique tid
- ceph_tid_t tid = ++last_tid;
- request->set_tid(tid);
-
- // and timestamp
- request->op_stamp = ceph_clock_now();
-
- // make note
- mds_requests[tid] = request->get();
- if (oldest_tid == 0 && request->get_op() != CEPH_MDS_OP_SETFILELOCK)
- oldest_tid = tid;
-
- request->set_caller_perms(perms);
-
- if (cct->_conf->client_inject_fixed_oldest_tid) {
- ldout(cct, 20) << __func__ << " injecting fixed oldest_client_tid(1)" << dendl;
- request->set_oldest_client_tid(1);
- } else {
- request->set_oldest_client_tid(oldest_tid);
- }
-
- // hack target mds?
- if (use_mds >= 0)
- request->resend_mds = use_mds;
-
- while (1) {
- if (request->aborted())
- break;
-
- if (blacklisted) {
- request->abort(-EBLACKLISTED);
- break;
- }
-
- // set up wait cond
- Cond caller_cond;
- request->caller_cond = &caller_cond;
-
- // choose mds
- Inode *hash_diri = NULL;
- mds_rank_t mds = choose_target_mds(request, &hash_diri);
- int mds_state = (mds == MDS_RANK_NONE) ? MDSMap::STATE_NULL : mdsmap->get_state(mds);
- if (mds_state != MDSMap::STATE_ACTIVE && mds_state != MDSMap::STATE_STOPPING) {
- if (mds_state == MDSMap::STATE_NULL && mds >= mdsmap->get_max_mds()) {
- if (hash_diri) {
- ldout(cct, 10) << " target mds." << mds << " has stopped, remove it from fragmap" << dendl;
- _fragmap_remove_stopped_mds(hash_diri, mds);
- } else {
- ldout(cct, 10) << " target mds." << mds << " has stopped, trying a random mds" << dendl;
- request->resend_mds = _get_random_up_mds();
- }
- } else {
- ldout(cct, 10) << " target mds." << mds << " not active, waiting for new mdsmap" << dendl;
- wait_on_list(waiting_for_mdsmap);
- }
- continue;
- }
-
- // open a session?
- MetaSession *session = NULL;
- if (!have_open_session(mds)) {
- session = _get_or_open_mds_session(mds);
-
- // wait
- if (session->state == MetaSession::STATE_OPENING) {
- ldout(cct, 10) << "waiting for session to mds." << mds << " to open" << dendl;
- wait_on_context_list(session->waiting_for_open);
- // Abort requests on REJECT from MDS
- if (rejected_by_mds.count(mds)) {
- request->abort(-EPERM);
- break;
- }
- continue;
- }
-
- if (!have_open_session(mds))
- continue;
- } else {
- session = mds_sessions[mds];
- }
-
- // send request.
- send_request(request, session);
-
- // wait for signal
- ldout(cct, 20) << "awaiting reply|forward|kick on " << &caller_cond << dendl;
- request->kick = false;
- while (!request->reply && // reply
- request->resend_mds < 0 && // forward
- !request->kick)
- caller_cond.Wait(client_lock);
- request->caller_cond = NULL;
-
- // did we get a reply?
- if (request->reply)
- break;
- }
-
- if (!request->reply) {
- assert(request->aborted());
- assert(!request->got_unsafe);
- r = request->get_abort_code();
- request->item.remove_myself();
- unregister_request(request);
- put_request(request); // ours
- return r;
- }
-
- // got it!
- MClientReply *reply = request->reply;
- request->reply = NULL;
- r = reply->get_result();
- if (r >= 0)
- request->success = true;
-
- // kick dispatcher (we've got it!)
- assert(request->dispatch_cond);
- request->dispatch_cond->Signal();
- ldout(cct, 20) << "sendrecv kickback on tid " << tid << " " << request->dispatch_cond << dendl;
- request->dispatch_cond = 0;
-
- if (r >= 0 && ptarget)
- r = verify_reply_trace(r, request, reply, ptarget, pcreated, perms);
-
- if (pdirbl)
- pdirbl->claim(reply->get_extra_bl());
-
- // -- log times --
- utime_t lat = ceph_clock_now();
- lat -= request->sent_stamp;
- ldout(cct, 20) << "lat " << lat << dendl;
- logger->tinc(l_c_lat, lat);
- logger->tinc(l_c_reply, lat);
-
- put_request(request);
-
- reply->put();
- return r;
-}
-
-void Client::unregister_request(MetaRequest *req)
-{
- mds_requests.erase(req->tid);
- if (req->tid == oldest_tid) {
- map<ceph_tid_t, MetaRequest*>::iterator p = mds_requests.upper_bound(oldest_tid);
- while (true) {
- if (p == mds_requests.end()) {
- oldest_tid = 0;
- break;
- }
- if (p->second->get_op() != CEPH_MDS_OP_SETFILELOCK) {
- oldest_tid = p->first;
- break;
- }
- ++p;
- }
- }
- put_request(req);
-}
-
-void Client::put_request(MetaRequest *request)
-{
- if (request->_put()) {
- int op = -1;
- if (request->success)
- op = request->get_op();
- InodeRef other_in;
- request->take_other_inode(&other_in);
- delete request;
-
- if (other_in &&
- (op == CEPH_MDS_OP_RMDIR ||
- op == CEPH_MDS_OP_RENAME ||
- op == CEPH_MDS_OP_RMSNAP)) {
- _try_to_trim_inode(other_in.get(), false);
- }
- }
-}
-
-int Client::encode_inode_release(Inode *in, MetaRequest *req,
- mds_rank_t mds, int drop,
- int unless, int force)
-{
- ldout(cct, 20) << "encode_inode_release enter(in:" << *in << ", req:" << req
- << " mds:" << mds << ", drop:" << drop << ", unless:" << unless
- << ", have:" << ", force:" << force << ")" << dendl;
- int released = 0;
- if (in->caps.count(mds)) {
- Cap *caps = in->caps[mds];
- drop &= ~(in->dirty_caps | get_caps_used(in));
- if ((drop & caps->issued) &&
- !(unless & caps->issued)) {
- ldout(cct, 25) << "Dropping caps. Initial " << ccap_string(caps->issued) << dendl;
- caps->issued &= ~drop;
- caps->implemented &= ~drop;
- released = 1;
- ldout(cct, 25) << "Now have: " << ccap_string(caps->issued) << dendl;
- } else {
- released = force;
- }
- if (released) {
- ceph_mds_request_release rel;
- rel.ino = in->ino;
- rel.cap_id = caps->cap_id;
- rel.seq = caps->seq;
- rel.issue_seq = caps->issue_seq;
- rel.mseq = caps->mseq;
- rel.caps = caps->implemented;
- rel.wanted = caps->wanted;
- rel.dname_len = 0;
- rel.dname_seq = 0;
- req->cap_releases.push_back(MClientRequest::Release(rel,""));
- }
- }
- ldout(cct, 25) << "encode_inode_release exit(in:" << *in << ") released:"
- << released << dendl;
- return released;
-}
-
-void Client::encode_dentry_release(Dentry *dn, MetaRequest *req,
- mds_rank_t mds, int drop, int unless)
-{
- ldout(cct, 20) << "encode_dentry_release enter(dn:"
- << dn << ")" << dendl;
- int released = 0;
- if (dn->dir)
- released = encode_inode_release(dn->dir->parent_inode, req,
- mds, drop, unless, 1);
- if (released && dn->lease_mds == mds) {
- ldout(cct, 25) << "preemptively releasing dn to mds" << dendl;
- MClientRequest::Release& rel = req->cap_releases.back();
- rel.item.dname_len = dn->name.length();
- rel.item.dname_seq = dn->lease_seq;
- rel.dname = dn->name;
- }
- ldout(cct, 25) << "encode_dentry_release exit(dn:"
- << dn << ")" << dendl;
-}
-
-
-/*
- * This requires the MClientRequest *request member to be set.
- * It will error out horribly without one.
- * Additionally, if you set any *drop member, you'd better have
- * set the corresponding dentry!
- */
-void Client::encode_cap_releases(MetaRequest *req, mds_rank_t mds)
-{
- ldout(cct, 20) << "encode_cap_releases enter (req: "
- << req << ", mds: " << mds << ")" << dendl;
- if (req->inode_drop && req->inode())
- encode_inode_release(req->inode(), req,
- mds, req->inode_drop,
- req->inode_unless);
-
- if (req->old_inode_drop && req->old_inode())
- encode_inode_release(req->old_inode(), req,
- mds, req->old_inode_drop,
- req->old_inode_unless);
- if (req->other_inode_drop && req->other_inode())
- encode_inode_release(req->other_inode(), req,
- mds, req->other_inode_drop,
- req->other_inode_unless);
-
- if (req->dentry_drop && req->dentry())
- encode_dentry_release(req->dentry(), req,
- mds, req->dentry_drop,
- req->dentry_unless);
-
- if (req->old_dentry_drop && req->old_dentry())
- encode_dentry_release(req->old_dentry(), req,
- mds, req->old_dentry_drop,
- req->old_dentry_unless);
- ldout(cct, 25) << "encode_cap_releases exit (req: "
- << req << ", mds " << mds <<dendl;
-}
-
-bool Client::have_open_session(mds_rank_t mds)
-{
- return
- mds_sessions.count(mds) &&
- (mds_sessions[mds]->state == MetaSession::STATE_OPEN ||
- mds_sessions[mds]->state == MetaSession::STATE_STALE);
-}
-
-MetaSession *Client::_get_mds_session(mds_rank_t mds, Connection *con)
-{
- if (mds_sessions.count(mds) == 0)
- return NULL;
- MetaSession *s = mds_sessions[mds];
- if (s->con != con)
- return NULL;
- return s;
-}
-
-MetaSession *Client::_get_or_open_mds_session(mds_rank_t mds)
-{
- if (mds_sessions.count(mds))
- return mds_sessions[mds];
- return _open_mds_session(mds);
-}
-
-/**
- * Populate a map of strings with client-identifying metadata,
- * such as the hostname. Call this once at initialization.
- */
-void Client::populate_metadata(const std::string &mount_root)
-{
- // Hostname
- struct utsname u;
- int r = uname(&u);
- if (r >= 0) {
- metadata["hostname"] = u.nodename;
- ldout(cct, 20) << __func__ << " read hostname '" << u.nodename << "'" << dendl;
- } else {
- ldout(cct, 1) << __func__ << " failed to read hostname (" << cpp_strerror(r) << ")" << dendl;
- }
-
- metadata["pid"] = stringify(getpid());
-
- // Ceph entity id (the '0' in "client.0")
- metadata["entity_id"] = cct->_conf->name.get_id();
-
- // Our mount position
- if (!mount_root.empty()) {
- metadata["root"] = mount_root;
- }
-
- // Ceph version
- metadata["ceph_version"] = pretty_version_to_str();
- metadata["ceph_sha1"] = git_version_to_str();
-
- // Apply any metadata from the user's configured overrides
- std::vector<std::string> tokens;
- get_str_vec(cct->_conf->client_metadata, ",", tokens);
- for (const auto &i : tokens) {
- auto eqpos = i.find("=");
- // Throw out anything that isn't of the form "<str>=<str>"
- if (eqpos == 0 || eqpos == std::string::npos || eqpos == i.size()) {
- lderr(cct) << "Invalid metadata keyval pair: '" << i << "'" << dendl;
- continue;
- }
- metadata[i.substr(0, eqpos)] = i.substr(eqpos + 1);
- }
-}
-
-/**
- * Optionally add or override client metadata fields.
- */
-void Client::update_metadata(std::string const &k, std::string const &v)
-{
- Mutex::Locker l(client_lock);
- assert(initialized);
-
- if (metadata.count(k)) {
- ldout(cct, 1) << __func__ << " warning, overriding metadata field '" << k
- << "' from '" << metadata[k] << "' to '" << v << "'" << dendl;
- }
-
- metadata[k] = v;
-}
-
-MetaSession *Client::_open_mds_session(mds_rank_t mds)
-{
- ldout(cct, 10) << "_open_mds_session mds." << mds << dendl;
- assert(mds_sessions.count(mds) == 0);
- MetaSession *session = new MetaSession;
- session->mds_num = mds;
- session->seq = 0;
- session->inst = mdsmap->get_inst(mds);
- session->con = messenger->get_connection(session->inst);
- session->state = MetaSession::STATE_OPENING;
- session->mds_state = MDSMap::STATE_NULL;
- mds_sessions[mds] = session;
-
- // Maybe skip sending a request to open if this MDS daemon
- // has previously sent us a REJECT.
- if (rejected_by_mds.count(mds)) {
- if (rejected_by_mds[mds] == session->inst) {
- ldout(cct, 4) << "_open_mds_session mds." << mds << " skipping "
- "because we were rejected" << dendl;
- return session;
- } else {
- ldout(cct, 4) << "_open_mds_session mds." << mds << " old inst "
- "rejected us, trying with new inst" << dendl;
- rejected_by_mds.erase(mds);
- }
- }
-
- MClientSession *m = new MClientSession(CEPH_SESSION_REQUEST_OPEN);
- m->client_meta = metadata;
- session->con->send_message(m);
- return session;
-}
-
-void Client::_close_mds_session(MetaSession *s)
-{
- ldout(cct, 2) << "_close_mds_session mds." << s->mds_num << " seq " << s->seq << dendl;
- s->state = MetaSession::STATE_CLOSING;
- s->con->send_message(new MClientSession(CEPH_SESSION_REQUEST_CLOSE, s->seq));
-}
-
-void Client::_closed_mds_session(MetaSession *s)
-{
- s->state = MetaSession::STATE_CLOSED;
- s->con->mark_down();
- signal_context_list(s->waiting_for_open);
- mount_cond.Signal();
- remove_session_caps(s);
- kick_requests_closed(s);
- mds_sessions.erase(s->mds_num);
- delete s;
-}
-
-void Client::handle_client_session(MClientSession *m)
-{
- mds_rank_t from = mds_rank_t(m->get_source().num());
- ldout(cct, 10) << "handle_client_session " << *m << " from mds." << from << dendl;
-
- MetaSession *session = _get_mds_session(from, m->get_connection().get());
- if (!session) {
- ldout(cct, 10) << " discarding session message from sessionless mds " << m->get_source_inst() << dendl;
- m->put();
- return;
- }
-
- switch (m->get_op()) {
- case CEPH_SESSION_OPEN:
- renew_caps(session);
- session->state = MetaSession::STATE_OPEN;
- if (unmounting)
- mount_cond.Signal();
- else
- connect_mds_targets(from);
- signal_context_list(session->waiting_for_open);
- break;
-
- case CEPH_SESSION_CLOSE:
- _closed_mds_session(session);
- break;
-
- case CEPH_SESSION_RENEWCAPS:
- if (session->cap_renew_seq == m->get_seq()) {
- session->cap_ttl =
- session->last_cap_renew_request + mdsmap->get_session_timeout();
- wake_inode_waiters(session);
- }
- break;
-
- case CEPH_SESSION_STALE:
- renew_caps(session);
- break;
-
- case CEPH_SESSION_RECALL_STATE:
- trim_caps(session, m->get_max_caps());
- break;
-
- case CEPH_SESSION_FLUSHMSG:
- session->con->send_message(new MClientSession(CEPH_SESSION_FLUSHMSG_ACK, m->get_seq()));
- break;
-
- case CEPH_SESSION_FORCE_RO:
- force_session_readonly(session);
- break;
-
- case CEPH_SESSION_REJECT:
- rejected_by_mds[session->mds_num] = session->inst;
- _closed_mds_session(session);
-
- break;
-
- default:
- ceph_abort();
- }
-
- m->put();
-}
-
-bool Client::_any_stale_sessions() const
-{
- assert(client_lock.is_locked_by_me());
-
- for (const auto &i : mds_sessions) {
- if (i.second->state == MetaSession::STATE_STALE) {
- return true;
- }
- }
-
- return false;
-}
-
-void Client::_kick_stale_sessions()
-{
- ldout(cct, 1) << "kick_stale_sessions" << dendl;
-
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end(); ) {
- MetaSession *s = p->second;
- ++p;
- if (s->state == MetaSession::STATE_STALE)
- _closed_mds_session(s);
- }
-}
-
-void Client::send_request(MetaRequest *request, MetaSession *session,
- bool drop_cap_releases)
-{
- // make the request
- mds_rank_t mds = session->mds_num;
- ldout(cct, 10) << "send_request rebuilding request " << request->get_tid()
- << " for mds." << mds << dendl;
- MClientRequest *r = build_client_request(request);
- if (request->dentry()) {
- r->set_dentry_wanted();
- }
- if (request->got_unsafe) {
- r->set_replayed_op();
- if (request->target)
- r->head.ino = request->target->ino;
- } else {
- encode_cap_releases(request, mds);
- if (drop_cap_releases) // we haven't send cap reconnect yet, drop cap releases
- request->cap_releases.clear();
- else
- r->releases.swap(request->cap_releases);
- }
- r->set_mdsmap_epoch(mdsmap->get_epoch());
- if (r->head.op == CEPH_MDS_OP_SETXATTR) {
- objecter->with_osdmap([r](const OSDMap& o) {
- r->set_osdmap_epoch(o.get_epoch());
- });
- }
-
- if (request->mds == -1) {
- request->sent_stamp = ceph_clock_now();
- ldout(cct, 20) << "send_request set sent_stamp to " << request->sent_stamp << dendl;
- }
- request->mds = mds;
-
- Inode *in = request->inode();
- if (in && in->caps.count(mds))
- request->sent_on_mseq = in->caps[mds]->mseq;
-
- session->requests.push_back(&request->item);
-
- ldout(cct, 10) << "send_request " << *r << " to mds." << mds << dendl;
- session->con->send_message(r);
-}
-
-MClientRequest* Client::build_client_request(MetaRequest *request)
-{
- MClientRequest *req = new MClientRequest(request->get_op());
- req->set_tid(request->tid);
- req->set_stamp(request->op_stamp);
- memcpy(&req->head, &request->head, sizeof(ceph_mds_request_head));
-
- // if the filepath's haven't been set, set them!
- if (request->path.empty()) {
- Inode *in = request->inode();
- Dentry *de = request->dentry();
- if (in)
- in->make_nosnap_relative_path(request->path);
- else if (de) {
- if (de->inode)
- de->inode->make_nosnap_relative_path(request->path);
- else if (de->dir) {
- de->dir->parent_inode->make_nosnap_relative_path(request->path);
- request->path.push_dentry(de->name);
- }
- else ldout(cct, 1) << "Warning -- unable to construct a filepath!"
- << " No path, inode, or appropriately-endowed dentry given!"
- << dendl;
- } else ldout(cct, 1) << "Warning -- unable to construct a filepath!"
- << " No path, inode, or dentry given!"
- << dendl;
- }
- req->set_filepath(request->get_filepath());
- req->set_filepath2(request->get_filepath2());
- req->set_data(request->data);
- req->set_retry_attempt(request->retry_attempt++);
- req->head.num_fwd = request->num_fwd;
- const gid_t *_gids;
- int gid_count = request->perms.get_gids(&_gids);
- req->set_gid_list(gid_count, _gids);
- return req;
-}
-
-
-
-void Client::handle_client_request_forward(MClientRequestForward *fwd)
-{
- mds_rank_t mds = mds_rank_t(fwd->get_source().num());
- MetaSession *session = _get_mds_session(mds, fwd->get_connection().get());
- if (!session) {
- fwd->put();
- return;
- }
- ceph_tid_t tid = fwd->get_tid();
-
- if (mds_requests.count(tid) == 0) {
- ldout(cct, 10) << "handle_client_request_forward no pending request on tid " << tid << dendl;
- fwd->put();
- return;
- }
-
- MetaRequest *request = mds_requests[tid];
- assert(request);
-
- // reset retry counter
- request->retry_attempt = 0;
-
- // request not forwarded, or dest mds has no session.
- // resend.
- ldout(cct, 10) << "handle_client_request tid " << tid
- << " fwd " << fwd->get_num_fwd()
- << " to mds." << fwd->get_dest_mds()
- << ", resending to " << fwd->get_dest_mds()
- << dendl;
-
- request->mds = -1;
- request->item.remove_myself();
- request->num_fwd = fwd->get_num_fwd();
- request->resend_mds = fwd->get_dest_mds();
- request->caller_cond->Signal();
-
- fwd->put();
-}
-
-bool Client::is_dir_operation(MetaRequest *req)
-{
- int op = req->get_op();
- if (op == CEPH_MDS_OP_MKNOD || op == CEPH_MDS_OP_LINK ||
- op == CEPH_MDS_OP_UNLINK || op == CEPH_MDS_OP_RENAME ||
- op == CEPH_MDS_OP_MKDIR || op == CEPH_MDS_OP_RMDIR ||
- op == CEPH_MDS_OP_SYMLINK || op == CEPH_MDS_OP_CREATE)
- return true;
- return false;
-}
-
-void Client::handle_client_reply(MClientReply *reply)
-{
- mds_rank_t mds_num = mds_rank_t(reply->get_source().num());
- MetaSession *session = _get_mds_session(mds_num, reply->get_connection().get());
- if (!session) {
- reply->put();
- return;
- }
-
- ceph_tid_t tid = reply->get_tid();
- bool is_safe = reply->is_safe();
-
- if (mds_requests.count(tid) == 0) {
- lderr(cct) << "handle_client_reply no pending request on tid " << tid
- << " safe is:" << is_safe << dendl;
- reply->put();
- return;
- }
- MetaRequest *request = mds_requests.at(tid);
-
- ldout(cct, 20) << "handle_client_reply got a reply. Safe:" << is_safe
- << " tid " << tid << dendl;
-
- if (request->got_unsafe && !is_safe) {
- //duplicate response
- ldout(cct, 0) << "got a duplicate reply on tid " << tid << " from mds "
- << mds_num << " safe:" << is_safe << dendl;
- reply->put();
- return;
- }
-
- if (-ESTALE == reply->get_result()) { // see if we can get to proper MDS
- ldout(cct, 20) << "got ESTALE on tid " << request->tid
- << " from mds." << request->mds << dendl;
- request->send_to_auth = true;
- request->resend_mds = choose_target_mds(request);
- Inode *in = request->inode();
- if (request->resend_mds >= 0 &&
- request->resend_mds == request->mds &&
- (in == NULL ||
- in->caps.count(request->resend_mds) == 0 ||
- request->sent_on_mseq == in->caps[request->resend_mds]->mseq)) {
- // have to return ESTALE
- } else {
- request->caller_cond->Signal();
- reply->put();
- return;
- }
- ldout(cct, 20) << "have to return ESTALE" << dendl;
- }
-
- assert(request->reply == NULL);
- request->reply = reply;
- insert_trace(request, session);
-
- // Handle unsafe reply
- if (!is_safe) {
- request->got_unsafe = true;
- session->unsafe_requests.push_back(&request->unsafe_item);
- if (is_dir_operation(request)) {
- Inode *dir = request->inode();
- assert(dir);
- dir->unsafe_ops.push_back(&request->unsafe_dir_item);
- }
- if (request->target) {
- InodeRef &in = request->target;
- in->unsafe_ops.push_back(&request->unsafe_target_item);
- }
- }
-
- // Only signal the caller once (on the first reply):
- // Either its an unsafe reply, or its a safe reply and no unsafe reply was sent.
- if (!is_safe || !request->got_unsafe) {
- Cond cond;
- request->dispatch_cond = &cond;
-
- // wake up waiter
- ldout(cct, 20) << "handle_client_reply signalling caller " << (void*)request->caller_cond << dendl;
- request->caller_cond->Signal();
-
- // wake for kick back
- while (request->dispatch_cond) {
- ldout(cct, 20) << "handle_client_reply awaiting kickback on tid " << tid << " " << &cond << dendl;
- cond.Wait(client_lock);
- }
- }
-
- if (is_safe) {
- // the filesystem change is committed to disk
- // we're done, clean up
- if (request->got_unsafe) {
- request->unsafe_item.remove_myself();
- request->unsafe_dir_item.remove_myself();
- request->unsafe_target_item.remove_myself();
- signal_cond_list(request->waitfor_safe);
- }
- request->item.remove_myself();
- unregister_request(request);
- }
- if (unmounting)
- mount_cond.Signal();
-}
-
-void Client::_handle_full_flag(int64_t pool)
-{
- ldout(cct, 1) << __func__ << ": FULL: cancelling outstanding operations "
- << "on " << pool << dendl;
- // Cancel all outstanding ops in this pool with -ENOSPC: it is necessary
- // to do this rather than blocking, because otherwise when we fill up we
- // potentially lock caps forever on files with dirty pages, and we need
- // to be able to release those caps to the MDS so that it can delete files
- // and free up space.
- epoch_t cancelled_epoch = objecter->op_cancel_writes(-ENOSPC, pool);
-
- // For all inodes with layouts in this pool and a pending flush write op
- // (i.e. one of the ones we will cancel), we've got to purge_set their data
- // from ObjectCacher so that it doesn't re-issue the write in response to
- // the ENOSPC error.
- // Fortunately since we're cancelling everything in a given pool, we don't
- // need to know which ops belong to which ObjectSet, we can just blow all
- // the un-flushed cached data away and mark any dirty inodes' async_err
- // field with -ENOSPC as long as we're sure all the ops we cancelled were
- // affecting this pool, and all the objectsets we're purging were also
- // in this pool.
- for (unordered_map<vinodeno_t,Inode*>::iterator i = inode_map.begin();
- i != inode_map.end(); ++i)
- {
- Inode *inode = i->second;
- if (inode->oset.dirty_or_tx
- && (pool == -1 || inode->layout.pool_id == pool)) {
- ldout(cct, 4) << __func__ << ": FULL: inode 0x" << std::hex << i->first << std::dec
- << " has dirty objects, purging and setting ENOSPC" << dendl;
- objectcacher->purge_set(&inode->oset);
- inode->set_async_err(-ENOSPC);
- }
- }
-
- if (cancelled_epoch != (epoch_t)-1) {
- set_cap_epoch_barrier(cancelled_epoch);
- }
-}
-
-void Client::handle_osd_map(MOSDMap *m)
-{
- std::set<entity_addr_t> new_blacklists;
- objecter->consume_blacklist_events(&new_blacklists);
-
- const auto myaddr = messenger->get_myaddr();
- if (!blacklisted && new_blacklists.count(myaddr)) {
- auto epoch = objecter->with_osdmap([](const OSDMap &o){
- return o.get_epoch();
- });
- lderr(cct) << "I was blacklisted at osd epoch " << epoch << dendl;
- blacklisted = true;
- for (std::map<ceph_tid_t, MetaRequest*>::iterator p = mds_requests.begin();
- p != mds_requests.end(); ) {
- auto req = p->second;
- ++p;
- req->abort(-EBLACKLISTED);
- if (req->caller_cond) {
- req->kick = true;
- req->caller_cond->Signal();
- }
- }
-
- // Progress aborts on any requests that were on this waitlist. Any
- // requests that were on a waiting_for_open session waitlist
- // will get kicked during close session below.
- signal_cond_list(waiting_for_mdsmap);
-
- // Force-close all sessions: assume this is not abandoning any state
- // on the MDS side because the MDS will have seen the blacklist too.
- while(!mds_sessions.empty()) {
- auto i = mds_sessions.begin();
- auto session = i->second;
- _closed_mds_session(session);
- }
-
- // Since we know all our OSD ops will fail, cancel them all preemtively,
- // so that on an unhealthy cluster we can umount promptly even if e.g.
- // some PGs were inaccessible.
- objecter->op_cancel_writes(-EBLACKLISTED);
-
- } else if (blacklisted) {
- // Handle case where we were blacklisted but no longer are
- blacklisted = objecter->with_osdmap([myaddr](const OSDMap &o){
- return o.is_blacklisted(myaddr);});
- }
-
- if (objecter->osdmap_full_flag()) {
- _handle_full_flag(-1);
- } else {
- // Accumulate local list of full pools so that I can drop
- // the objecter lock before re-entering objecter in
- // cancel_writes
- std::vector<int64_t> full_pools;
-
- objecter->with_osdmap([&full_pools](const OSDMap &o) {
- for (const auto& kv : o.get_pools()) {
- if (kv.second.has_flag(pg_pool_t::FLAG_FULL)) {
- full_pools.push_back(kv.first);
- }
- }
- });
-
- for (auto p : full_pools)
- _handle_full_flag(p);
-
- // Subscribe to subsequent maps to watch for the full flag going
- // away. For the global full flag objecter does this for us, but
- // it pays no attention to the per-pool full flag so in this branch
- // we do it ourselves.
- if (!full_pools.empty()) {
- objecter->maybe_request_map();
- }
- }
-
- m->put();
-}
-
-
-// ------------------------
-// incoming messages
-
-
-bool Client::ms_dispatch(Message *m)
-{
- Mutex::Locker l(client_lock);
- if (!initialized) {
- ldout(cct, 10) << "inactive, discarding " << *m << dendl;
- m->put();
- return true;
- }
-
- switch (m->get_type()) {
- // mounting and mds sessions
- case CEPH_MSG_MDS_MAP:
- handle_mds_map(static_cast<MMDSMap*>(m));
- break;
- case CEPH_MSG_FS_MAP:
- handle_fs_map(static_cast<MFSMap*>(m));
- break;
- case CEPH_MSG_FS_MAP_USER:
- handle_fs_map_user(static_cast<MFSMapUser*>(m));
- break;
- case CEPH_MSG_CLIENT_SESSION:
- handle_client_session(static_cast<MClientSession*>(m));
- break;
-
- case CEPH_MSG_OSD_MAP:
- handle_osd_map(static_cast<MOSDMap*>(m));
- break;
-
- // requests
- case CEPH_MSG_CLIENT_REQUEST_FORWARD:
- handle_client_request_forward(static_cast<MClientRequestForward*>(m));
- break;
- case CEPH_MSG_CLIENT_REPLY:
- handle_client_reply(static_cast<MClientReply*>(m));
- break;
-
- case CEPH_MSG_CLIENT_SNAP:
- handle_snap(static_cast<MClientSnap*>(m));
- break;
- case CEPH_MSG_CLIENT_CAPS:
- handle_caps(static_cast<MClientCaps*>(m));
- break;
- case CEPH_MSG_CLIENT_LEASE:
- handle_lease(static_cast<MClientLease*>(m));
- break;
- case MSG_COMMAND_REPLY:
- if (m->get_source().type() == CEPH_ENTITY_TYPE_MDS) {
- handle_command_reply(static_cast<MCommandReply*>(m));
- } else {
- return false;
- }
- break;
- case CEPH_MSG_CLIENT_QUOTA:
- handle_quota(static_cast<MClientQuota*>(m));
- break;
-
- default:
- return false;
- }
-
- // unmounting?
- if (unmounting) {
- ldout(cct, 10) << "unmounting: trim pass, size was " << lru.lru_get_size()
- << "+" << inode_map.size() << dendl;
- long unsigned size = lru.lru_get_size() + inode_map.size();
- trim_cache();
- if (size < lru.lru_get_size() + inode_map.size()) {
- ldout(cct, 10) << "unmounting: trim pass, cache shrank, poking unmount()" << dendl;
- mount_cond.Signal();
- } else {
- ldout(cct, 10) << "unmounting: trim pass, size still " << lru.lru_get_size()
- << "+" << inode_map.size() << dendl;
- }
- }
-
- return true;
-}
-
-void Client::handle_fs_map(MFSMap *m)
-{
- fsmap.reset(new FSMap(m->get_fsmap()));
- m->put();
-
- signal_cond_list(waiting_for_fsmap);
-
- monclient->sub_got("fsmap", fsmap->get_epoch());
-}
-
-void Client::handle_fs_map_user(MFSMapUser *m)
-{
- fsmap_user.reset(new FSMapUser);
- *fsmap_user = m->get_fsmap();
- m->put();
-
- monclient->sub_got("fsmap.user", fsmap_user->get_epoch());
- signal_cond_list(waiting_for_fsmap);
-}
-
-void Client::handle_mds_map(MMDSMap* m)
-{
- if (m->get_epoch() <= mdsmap->get_epoch()) {
- ldout(cct, 1) << "handle_mds_map epoch " << m->get_epoch()
- << " is identical to or older than our "
- << mdsmap->get_epoch() << dendl;
- m->put();
- return;
- }
-
- ldout(cct, 1) << "handle_mds_map epoch " << m->get_epoch() << dendl;
-
- std::unique_ptr<MDSMap> oldmap(new MDSMap);
- oldmap.swap(mdsmap);
-
- mdsmap->decode(m->get_encoded());
-
- // Cancel any commands for missing or laggy GIDs
- std::list<ceph_tid_t> cancel_ops;
- auto &commands = command_table.get_commands();
- for (const auto &i : commands) {
- auto &op = i.second;
- const mds_gid_t op_mds_gid = op.mds_gid;
- if (mdsmap->is_dne_gid(op_mds_gid) || mdsmap->is_laggy_gid(op_mds_gid)) {
- ldout(cct, 1) << __func__ << ": cancelling command op " << i.first << dendl;
- cancel_ops.push_back(i.first);
- if (op.outs) {
- std::ostringstream ss;
- ss << "MDS " << op_mds_gid << " went away";
- *(op.outs) = ss.str();
- }
- op.con->mark_down();
- if (op.on_finish) {
- op.on_finish->complete(-ETIMEDOUT);
- }
- }
- }
-
- for (std::list<ceph_tid_t>::iterator i = cancel_ops.begin();
- i != cancel_ops.end(); ++i) {
- command_table.erase(*i);
- }
-
- // reset session
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end(); ) {
- mds_rank_t mds = p->first;
- MetaSession *session = p->second;
- ++p;
-
- int oldstate = oldmap->get_state(mds);
- int newstate = mdsmap->get_state(mds);
- if (!mdsmap->is_up(mds)) {
- session->con->mark_down();
- } else if (mdsmap->get_inst(mds) != session->inst) {
- session->con->mark_down();
- session->inst = mdsmap->get_inst(mds);
- // When new MDS starts to take over, notify kernel to trim unused entries
- // in its dcache/icache. Hopefully, the kernel will release some unused
- // inodes before the new MDS enters reconnect state.
- trim_cache_for_reconnect(session);
- } else if (oldstate == newstate)
- continue; // no change
-
- session->mds_state = newstate;
- if (newstate == MDSMap::STATE_RECONNECT) {
- session->con = messenger->get_connection(session->inst);
- send_reconnect(session);
- } else if (newstate >= MDSMap::STATE_ACTIVE) {
- if (oldstate < MDSMap::STATE_ACTIVE) {
- // kick new requests
- kick_requests(session);
- kick_flushing_caps(session);
- signal_context_list(session->waiting_for_open);
- kick_maxsize_requests(session);
- wake_inode_waiters(session);
- }
- connect_mds_targets(mds);
- } else if (newstate == MDSMap::STATE_NULL &&
- mds >= mdsmap->get_max_mds()) {
- _closed_mds_session(session);
- }
- }
-
- // kick any waiting threads
- signal_cond_list(waiting_for_mdsmap);
-
- m->put();
-
- monclient->sub_got("mdsmap", mdsmap->get_epoch());
-}
-
-void Client::send_reconnect(MetaSession *session)
-{
- mds_rank_t mds = session->mds_num;
- ldout(cct, 10) << "send_reconnect to mds." << mds << dendl;
-
- // trim unused caps to reduce MDS's cache rejoin time
- trim_cache_for_reconnect(session);
-
- session->readonly = false;
-
- if (session->release) {
- session->release->put();
- session->release = NULL;
- }
-
- // reset my cap seq number
- session->seq = 0;
- //connect to the mds' offload targets
- connect_mds_targets(mds);
- //make sure unsafe requests get saved
- resend_unsafe_requests(session);
-
- MClientReconnect *m = new MClientReconnect;
-
- // i have an open session.
- ceph::unordered_set<inodeno_t> did_snaprealm;
- for (ceph::unordered_map<vinodeno_t, Inode*>::iterator p = inode_map.begin();
- p != inode_map.end();
- ++p) {
- Inode *in = p->second;
- if (in->caps.count(mds)) {
- ldout(cct, 10) << " caps on " << p->first
- << " " << ccap_string(in->caps[mds]->issued)
- << " wants " << ccap_string(in->caps_wanted())
- << dendl;
- filepath path;
- in->make_long_path(path);
- ldout(cct, 10) << " path " << path << dendl;
-
- bufferlist flockbl;
- _encode_filelocks(in, flockbl);
-
- Cap *cap = in->caps[mds];
- cap->seq = 0; // reset seq.
- cap->issue_seq = 0; // reset seq.
- cap->mseq = 0; // reset seq.
- cap->issued = cap->implemented;
-
- snapid_t snap_follows = 0;
- if (!in->cap_snaps.empty())
- snap_follows = in->cap_snaps.begin()->first;
-
- m->add_cap(p->first.ino,
- cap->cap_id,
- path.get_ino(), path.get_path(), // ino
- in->caps_wanted(), // wanted
- cap->issued, // issued
- in->snaprealm->ino,
- snap_follows,
- flockbl);
-
- if (did_snaprealm.count(in->snaprealm->ino) == 0) {
- ldout(cct, 10) << " snaprealm " << *in->snaprealm << dendl;
- m->add_snaprealm(in->snaprealm->ino, in->snaprealm->seq, in->snaprealm->parent);
- did_snaprealm.insert(in->snaprealm->ino);
- }
- }
- }
-
- early_kick_flushing_caps(session);
-
- session->con->send_message(m);
-
- mount_cond.Signal();
-}
-
-
-void Client::kick_requests(MetaSession *session)
-{
- ldout(cct, 10) << "kick_requests for mds." << session->mds_num << dendl;
- for (map<ceph_tid_t, MetaRequest*>::iterator p = mds_requests.begin();
- p != mds_requests.end();
- ++p) {
- MetaRequest *req = p->second;
- if (req->got_unsafe)
- continue;
- if (req->aborted()) {
- if (req->caller_cond) {
- req->kick = true;
- req->caller_cond->Signal();
- }
- continue;
- }
- if (req->retry_attempt > 0)
- continue; // new requests only
- if (req->mds == session->mds_num) {
- send_request(p->second, session);
- }
- }
-}
-
-void Client::resend_unsafe_requests(MetaSession *session)
-{
- for (xlist<MetaRequest*>::iterator iter = session->unsafe_requests.begin();
- !iter.end();
- ++iter)
- send_request(*iter, session);
-
- // also re-send old requests when MDS enters reconnect stage. So that MDS can
- // process completed requests in clientreplay stage.
- for (map<ceph_tid_t, MetaRequest*>::iterator p = mds_requests.begin();
- p != mds_requests.end();
- ++p) {
- MetaRequest *req = p->second;
- if (req->got_unsafe)
- continue;
- if (req->aborted())
- continue;
- if (req->retry_attempt == 0)
- continue; // old requests only
- if (req->mds == session->mds_num)
- send_request(req, session, true);
- }
-}
-
-void Client::wait_unsafe_requests()
-{
- list<MetaRequest*> last_unsafe_reqs;
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p) {
- MetaSession *s = p->second;
- if (!s->unsafe_requests.empty()) {
- MetaRequest *req = s->unsafe_requests.back();
- req->get();
- last_unsafe_reqs.push_back(req);
- }
- }
-
- for (list<MetaRequest*>::iterator p = last_unsafe_reqs.begin();
- p != last_unsafe_reqs.end();
- ++p) {
- MetaRequest *req = *p;
- if (req->unsafe_item.is_on_list())
- wait_on_list(req->waitfor_safe);
- put_request(req);
- }
-}
-
-void Client::kick_requests_closed(MetaSession *session)
-{
- ldout(cct, 10) << "kick_requests_closed for mds." << session->mds_num << dendl;
- for (map<ceph_tid_t, MetaRequest*>::iterator p = mds_requests.begin();
- p != mds_requests.end(); ) {
- MetaRequest *req = p->second;
- ++p;
- if (req->mds == session->mds_num) {
- if (req->caller_cond) {
- req->kick = true;
- req->caller_cond->Signal();
- }
- req->item.remove_myself();
- if (req->got_unsafe) {
- lderr(cct) << "kick_requests_closed removing unsafe request " << req->get_tid() << dendl;
- req->unsafe_item.remove_myself();
- req->unsafe_dir_item.remove_myself();
- req->unsafe_target_item.remove_myself();
- signal_cond_list(req->waitfor_safe);
- unregister_request(req);
- }
- }
- }
- assert(session->requests.empty());
- assert(session->unsafe_requests.empty());
-}
-
-
-
-
-/************
- * leases
- */
-
-void Client::got_mds_push(MetaSession *s)
-{
- s->seq++;
- ldout(cct, 10) << " mds." << s->mds_num << " seq now " << s->seq << dendl;
- if (s->state == MetaSession::STATE_CLOSING) {
- s->con->send_message(new MClientSession(CEPH_SESSION_REQUEST_CLOSE, s->seq));
- }
-}
-
-void Client::handle_lease(MClientLease *m)
-{
- ldout(cct, 10) << "handle_lease " << *m << dendl;
-
- assert(m->get_action() == CEPH_MDS_LEASE_REVOKE);
-
- mds_rank_t mds = mds_rank_t(m->get_source().num());
- MetaSession *session = _get_mds_session(mds, m->get_connection().get());
- if (!session) {
- m->put();
- return;
- }
-
- got_mds_push(session);
-
- ceph_seq_t seq = m->get_seq();
-
- Inode *in;
- vinodeno_t vino(m->get_ino(), CEPH_NOSNAP);
- if (inode_map.count(vino) == 0) {
- ldout(cct, 10) << " don't have vino " << vino << dendl;
- goto revoke;
- }
- in = inode_map[vino];
-
- if (m->get_mask() & CEPH_LOCK_DN) {
- if (!in->dir || in->dir->dentries.count(m->dname) == 0) {
- ldout(cct, 10) << " don't have dir|dentry " << m->get_ino() << "/" << m->dname <<dendl;
- goto revoke;
- }
- Dentry *dn = in->dir->dentries[m->dname];
- ldout(cct, 10) << " revoked DN lease on " << dn << dendl;
- dn->lease_mds = -1;
- }
-
- revoke:
- m->get_connection()->send_message(
- new MClientLease(
- CEPH_MDS_LEASE_RELEASE, seq,
- m->get_mask(), m->get_ino(), m->get_first(), m->get_last(), m->dname));
- m->put();
-}
-
-void Client::put_inode(Inode *in, int n)
-{
- ldout(cct, 10) << "put_inode on " << *in << dendl;
- int left = in->_put(n);
- if (left == 0) {
- // release any caps
- remove_all_caps(in);
-
- ldout(cct, 10) << "put_inode deleting " << *in << dendl;
- bool unclean = objectcacher->release_set(&in->oset);
- assert(!unclean);
- inode_map.erase(in->vino());
- if (use_faked_inos())
- _release_faked_ino(in);
-
- if (in == root) {
- root = 0;
- root_ancestor = 0;
- while (!root_parents.empty())
- root_parents.erase(root_parents.begin());
- }
-
- delete in;
- }
-}
-
-void Client::close_dir(Dir *dir)
-{
- Inode *in = dir->parent_inode;
- ldout(cct, 15) << "close_dir dir " << dir << " on " << in << dendl;
- assert(dir->is_empty());
- assert(in->dir == dir);
- assert(in->dn_set.size() < 2); // dirs can't be hard-linked
- if (!in->dn_set.empty())
- in->get_first_parent()->put(); // unpin dentry
-
- delete in->dir;
- in->dir = 0;
- put_inode(in); // unpin inode
-}
-
- /**
- * Don't call this with in==NULL, use get_or_create for that
- * leave dn set to default NULL unless you're trying to add
- * a new inode to a pre-created Dentry
- */
-Dentry* Client::link(Dir *dir, const string& name, Inode *in, Dentry *dn)
-{
- if (!dn) {
- // create a new Dentry
- dn = new Dentry;
- dn->name = name;
-
- // link to dir
- dn->dir = dir;
- dir->dentries[dn->name] = dn;
- lru.lru_insert_mid(dn); // mid or top?
-
- ldout(cct, 15) << "link dir " << dir->parent_inode << " '" << name << "' to inode " << in
- << " dn " << dn << " (new dn)" << dendl;
- } else {
- ldout(cct, 15) << "link dir " << dir->parent_inode << " '" << name << "' to inode " << in
- << " dn " << dn << " (old dn)" << dendl;
- }
-
- if (in) { // link to inode
- dn->inode = in;
- if (in->is_dir()) {
- if (in->dir)
- dn->get(); // dir -> dn pin
- if (in->ll_ref)
- dn->get(); // ll_ref -> dn pin
- }
-
- assert(in->dn_set.count(dn) == 0);
-
- // only one parent for directories!
- if (in->is_dir() && !in->dn_set.empty()) {
- Dentry *olddn = in->get_first_parent();
- assert(olddn->dir != dir || olddn->name != name);
- Inode *old_diri = olddn->dir->parent_inode;
- old_diri->dir_release_count++;
- clear_dir_complete_and_ordered(old_diri, true);
- unlink(olddn, true, true); // keep dir, dentry
- }
-
- in->dn_set.insert(dn);
-
- ldout(cct, 20) << "link inode " << in << " parents now " << in->dn_set << dendl;
- }
-
- return dn;
-}
-
-void Client::unlink(Dentry *dn, bool keepdir, bool keepdentry)
-{
- InodeRef in;
- in.swap(dn->inode);
- ldout(cct, 15) << "unlink dir " << dn->dir->parent_inode << " '" << dn->name << "' dn " << dn
- << " inode " << dn->inode << dendl;
-
- // unlink from inode
- if (in) {
- if (in->is_dir()) {
- if (in->dir)
- dn->put(); // dir -> dn pin
- if (in->ll_ref)
- dn->put(); // ll_ref -> dn pin
- }
- dn->inode = 0;
- assert(in->dn_set.count(dn));
- in->dn_set.erase(dn);
- ldout(cct, 20) << "unlink inode " << in << " parents now " << in->dn_set << dendl;
- }
-
- if (keepdentry) {
- dn->lease_mds = -1;
- } else {
- ldout(cct, 15) << "unlink removing '" << dn->name << "' dn " << dn << dendl;
-
- // unlink from dir
- dn->dir->dentries.erase(dn->name);
- if (dn->dir->is_empty() && !keepdir)
- close_dir(dn->dir);
- dn->dir = 0;
-
- // delete den
- lru.lru_remove(dn);
- dn->put();
- }
-}
-
-/**
- * For asynchronous flushes, check for errors from the IO and
- * update the inode if necessary
- */
-class C_Client_FlushComplete : public Context {
-private:
- Client *client;
- InodeRef inode;
-public:
- C_Client_FlushComplete(Client *c, Inode *in) : client(c), inode(in) { }
- void finish(int r) override {
- assert(client->client_lock.is_locked_by_me());
- if (r != 0) {
- client_t const whoami = client->whoami; // For the benefit of ldout prefix
- ldout(client->cct, 1) << "I/O error from flush on inode " << inode
- << " 0x" << std::hex << inode->ino << std::dec
- << ": " << r << "(" << cpp_strerror(r) << ")" << dendl;
- inode->set_async_err(r);
- }
- }
-};
-
-
-/****
- * caps
- */
-
-void Client::get_cap_ref(Inode *in, int cap)
-{
- if ((cap & CEPH_CAP_FILE_BUFFER) &&
- in->cap_refs[CEPH_CAP_FILE_BUFFER] == 0) {
- ldout(cct, 5) << "get_cap_ref got first FILE_BUFFER ref on " << *in << dendl;
- in->get();
- }
- if ((cap & CEPH_CAP_FILE_CACHE) &&
- in->cap_refs[CEPH_CAP_FILE_CACHE] == 0) {
- ldout(cct, 5) << "get_cap_ref got first FILE_CACHE ref on " << *in << dendl;
- in->get();
- }
- in->get_cap_ref(cap);
-}
-
-void Client::put_cap_ref(Inode *in, int cap)
-{
- int last = in->put_cap_ref(cap);
- if (last) {
- int put_nref = 0;
- int drop = last & ~in->caps_issued();
- if (in->snapid == CEPH_NOSNAP) {
- if ((last & CEPH_CAP_FILE_WR) &&
- !in->cap_snaps.empty() &&
- in->cap_snaps.rbegin()->second.writing) {
- ldout(cct, 10) << "put_cap_ref finishing pending cap_snap on " << *in << dendl;
- in->cap_snaps.rbegin()->second.writing = 0;
- finish_cap_snap(in, in->cap_snaps.rbegin()->second, get_caps_used(in));
- signal_cond_list(in->waitfor_caps); // wake up blocked sync writers
- }
- if (last & CEPH_CAP_FILE_BUFFER) {
- for (auto &p : in->cap_snaps)
- p.second.dirty_data = 0;
- signal_cond_list(in->waitfor_commit);
- ldout(cct, 5) << "put_cap_ref dropped last FILE_BUFFER ref on " << *in << dendl;
- ++put_nref;
- }
- }
- if (last & CEPH_CAP_FILE_CACHE) {
- ldout(cct, 5) << "put_cap_ref dropped last FILE_CACHE ref on " << *in << dendl;
- ++put_nref;
- }
- if (drop)
- check_caps(in, 0);
- if (put_nref)
- put_inode(in, put_nref);
- }
-}
-
-int Client::get_caps(Inode *in, int need, int want, int *phave, loff_t endoff)
-{
- int r = check_pool_perm(in, need);
- if (r < 0)
- return r;
-
- while (1) {
- int file_wanted = in->caps_file_wanted();
- if ((file_wanted & need) != need) {
- ldout(cct, 10) << "get_caps " << *in << " need " << ccap_string(need)
- << " file_wanted " << ccap_string(file_wanted) << ", EBADF "
- << dendl;
- return -EBADF;
- }
-
- int implemented;
- int have = in->caps_issued(&implemented);
-
- bool waitfor_caps = false;
- bool waitfor_commit = false;
-
- if (have & need & CEPH_CAP_FILE_WR) {
- if (endoff > 0 &&
- (endoff >= (loff_t)in->max_size ||
- endoff > (loff_t)(in->size << 1)) &&
- endoff > (loff_t)in->wanted_max_size) {
- ldout(cct, 10) << "wanted_max_size " << in->wanted_max_size << " -> " << endoff << dendl;
- in->wanted_max_size = endoff;
- check_caps(in, 0);
- }
-
- if (endoff >= 0 && endoff > (loff_t)in->max_size) {
- ldout(cct, 10) << "waiting on max_size, endoff " << endoff << " max_size " << in->max_size << " on " << *in << dendl;
- waitfor_caps = true;
- }
- if (!in->cap_snaps.empty()) {
- if (in->cap_snaps.rbegin()->second.writing) {
- ldout(cct, 10) << "waiting on cap_snap write to complete" << dendl;
- waitfor_caps = true;
- }
- for (auto &p : in->cap_snaps) {
- if (p.second.dirty_data) {
- waitfor_commit = true;
- break;
- }
- }
- if (waitfor_commit) {
- _flush(in, new C_Client_FlushComplete(this, in));
- ldout(cct, 10) << "waiting for WRBUFFER to get dropped" << dendl;
- }
- }
- }
-
- if (!waitfor_caps && !waitfor_commit) {
- if ((have & need) == need) {
- int revoking = implemented & ~have;
- ldout(cct, 10) << "get_caps " << *in << " have " << ccap_string(have)
- << " need " << ccap_string(need) << " want " << ccap_string(want)
- << " revoking " << ccap_string(revoking)
- << dendl;
- if ((revoking & want) == 0) {
- *phave = need | (have & want);
- in->get_cap_ref(need);
- return 0;
- }
- }
- ldout(cct, 10) << "waiting for caps " << *in << " need " << ccap_string(need) << " want " << ccap_string(want) << dendl;
- waitfor_caps = true;
- }
-
- if ((need & CEPH_CAP_FILE_WR) && in->auth_cap &&
- in->auth_cap->session->readonly)
- return -EROFS;
-
- if (in->flags & I_CAP_DROPPED) {
- int mds_wanted = in->caps_mds_wanted();
- if ((mds_wanted & need) != need) {
- int ret = _renew_caps(in);
- if (ret < 0)
- return ret;
- continue;
- }
- if ((mds_wanted & file_wanted) ==
- (file_wanted & (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR))) {
- in->flags &= ~I_CAP_DROPPED;
- }
- }
-
- if (waitfor_caps)
- wait_on_list(in->waitfor_caps);
- else if (waitfor_commit)
- wait_on_list(in->waitfor_commit);
- }
-}
-
-int Client::get_caps_used(Inode *in)
-{
- unsigned used = in->caps_used();
- if (!(used & CEPH_CAP_FILE_CACHE) &&
- !objectcacher->set_is_empty(&in->oset))
- used |= CEPH_CAP_FILE_CACHE;
- return used;
-}
-
-void Client::cap_delay_requeue(Inode *in)
-{
- ldout(cct, 10) << "cap_delay_requeue on " << *in << dendl;
- in->hold_caps_until = ceph_clock_now();
- in->hold_caps_until += cct->_conf->client_caps_release_delay;
- delayed_caps.push_back(&in->cap_item);
-}
-
-void Client::send_cap(Inode *in, MetaSession *session, Cap *cap,
- bool sync, int used, int want, int retain,
- int flush, ceph_tid_t flush_tid)
-{
- int held = cap->issued | cap->implemented;
- int revoking = cap->implemented & ~cap->issued;
- retain &= ~revoking;
- int dropping = cap->issued & ~retain;
- int op = CEPH_CAP_OP_UPDATE;
-
- ldout(cct, 10) << "send_cap " << *in
- << " mds." << session->mds_num << " seq " << cap->seq
- << (sync ? " sync " : " async ")
- << " used " << ccap_string(used)
- << " want " << ccap_string(want)
- << " flush " << ccap_string(flush)
- << " retain " << ccap_string(retain)
- << " held "<< ccap_string(held)
- << " revoking " << ccap_string(revoking)
- << " dropping " << ccap_string(dropping)
- << dendl;
-
- if (cct->_conf->client_inject_release_failure && revoking) {
- const int would_have_issued = cap->issued & retain;
- const int would_have_implemented = cap->implemented & (cap->issued | used);
- // Simulated bug:
- // - tell the server we think issued is whatever they issued plus whatever we implemented
- // - leave what we have implemented in place
- ldout(cct, 20) << __func__ << " injecting failure to release caps" << dendl;
- cap->issued = cap->issued | cap->implemented;
-
- // Make an exception for revoking xattr caps: we are injecting
- // failure to release other caps, but allow xattr because client
- // will block on xattr ops if it can't release these to MDS (#9800)
- const int xattr_mask = CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
- cap->issued ^= xattr_mask & revoking;
- cap->implemented ^= xattr_mask & revoking;
-
- ldout(cct, 20) << __func__ << " issued " << ccap_string(cap->issued) << " vs " << ccap_string(would_have_issued) << dendl;
- ldout(cct, 20) << __func__ << " implemented " << ccap_string(cap->implemented) << " vs " << ccap_string(would_have_implemented) << dendl;
- } else {
- // Normal behaviour
- cap->issued &= retain;
- cap->implemented &= cap->issued | used;
- }
-
- snapid_t follows = 0;
-
- if (flush)
- follows = in->snaprealm->get_snap_context().seq;
-
- MClientCaps *m = new MClientCaps(op,
- in->ino,
- 0,
- cap->cap_id, cap->seq,
- cap->implemented,
- want,
- flush,
- cap->mseq,
- cap_epoch_barrier);
- m->caller_uid = in->cap_dirtier_uid;
- m->caller_gid = in->cap_dirtier_gid;
-
- m->head.issue_seq = cap->issue_seq;
- m->set_tid(flush_tid);
-
- m->head.uid = in->uid;
- m->head.gid = in->gid;
- m->head.mode = in->mode;
-
- m->head.nlink = in->nlink;
-
- if (flush & CEPH_CAP_XATTR_EXCL) {
- ::encode(in->xattrs, m->xattrbl);
- m->head.xattr_version = in->xattr_version;
- }
-
- m->size = in->size;
- m->max_size = in->max_size;
- m->truncate_seq = in->truncate_seq;
- m->truncate_size = in->truncate_size;
- m->mtime = in->mtime;
- m->atime = in->atime;
- m->ctime = in->ctime;
- m->btime = in->btime;
- m->time_warp_seq = in->time_warp_seq;
- m->change_attr = in->change_attr;
- if (sync)
- m->flags |= CLIENT_CAPS_SYNC;
-
- if (flush & CEPH_CAP_FILE_WR) {
- m->inline_version = in->inline_version;
- m->inline_data = in->inline_data;
- }
-
- in->reported_size = in->size;
- m->set_snap_follows(follows);
- cap->wanted = want;
- if (cap == in->auth_cap) {
- m->set_max_size(in->wanted_max_size);
- in->requested_max_size = in->wanted_max_size;
- ldout(cct, 15) << "auth cap, setting max_size = " << in->requested_max_size << dendl;
- }
-
- if (!session->flushing_caps_tids.empty())
- m->set_oldest_flush_tid(*session->flushing_caps_tids.begin());
-
- session->con->send_message(m);
-}
-
-static bool is_max_size_approaching(Inode *in)
-{
- /* mds will adjust max size according to the reported size */
- if (in->flushing_caps & CEPH_CAP_FILE_WR)
- return false;
- if (in->size >= in->max_size)
- return true;
- /* half of previous max_size increment has been used */
- if (in->max_size > in->reported_size &&
- (in->size << 1) >= in->max_size + in->reported_size)
- return true;
- return false;
-}
-
-/**
- * check_caps
- *
- * Examine currently used and wanted versus held caps. Release, flush or ack
- * revoked caps to the MDS as appropriate.
- *
- * @param in the inode to check
- * @param flags flags to apply to cap check
- */
-void Client::check_caps(Inode *in, unsigned flags)
-{
- unsigned wanted = in->caps_wanted();
- unsigned used = get_caps_used(in);
- unsigned cap_used;
-
- if (in->is_dir() && (in->flags & I_COMPLETE)) {
- // we do this here because we don't want to drop to Fs (and then
- // drop the Fs if we do a create!) if that alone makes us send lookups
- // to the MDS. Doing it in in->caps_wanted() has knock-on effects elsewhere
- wanted |= CEPH_CAP_FILE_EXCL;
- }
-
- int implemented;
- int issued = in->caps_issued(&implemented);
- int revoking = implemented & ~issued;
-
- int retain = wanted | used | CEPH_CAP_PIN;
- if (!unmounting) {
- if (wanted)
- retain |= CEPH_CAP_ANY;
- else
- retain |= CEPH_CAP_ANY_SHARED;
- }
-
- ldout(cct, 10) << "check_caps on " << *in
- << " wanted " << ccap_string(wanted)
- << " used " << ccap_string(used)
- << " issued " << ccap_string(issued)
- << " revoking " << ccap_string(revoking)
- << " flags=" << flags
- << dendl;
-
- if (in->snapid != CEPH_NOSNAP)
- return; //snap caps last forever, can't write
-
- if (in->caps.empty())
- return; // guard if at end of func
-
- if ((revoking & (CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO)) &&
- (used & CEPH_CAP_FILE_CACHE) && !(used & CEPH_CAP_FILE_BUFFER))
- _release(in);
-
- if (!in->cap_snaps.empty())
- flush_snaps(in);
-
- if (flags & CHECK_CAPS_NODELAY)
- in->hold_caps_until = utime_t();
- else
- cap_delay_requeue(in);
-
- utime_t now = ceph_clock_now();
-
- map<mds_rank_t, Cap*>::iterator it = in->caps.begin();
- while (it != in->caps.end()) {
- mds_rank_t mds = it->first;
- Cap *cap = it->second;
- ++it;
-
- MetaSession *session = mds_sessions[mds];
- assert(session);
-
- cap_used = used;
- if (in->auth_cap && cap != in->auth_cap)
- cap_used &= ~in->auth_cap->issued;
-
- revoking = cap->implemented & ~cap->issued;
-
- ldout(cct, 10) << " cap mds." << mds
- << " issued " << ccap_string(cap->issued)
- << " implemented " << ccap_string(cap->implemented)
- << " revoking " << ccap_string(revoking) << dendl;
-
- if (in->wanted_max_size > in->max_size &&
- in->wanted_max_size > in->requested_max_size &&
- cap == in->auth_cap)
- goto ack;
-
- /* approaching file_max? */
- if ((cap->issued & CEPH_CAP_FILE_WR) &&
- cap == in->auth_cap &&
- is_max_size_approaching(in)) {
- ldout(cct, 10) << "size " << in->size << " approaching max_size " << in->max_size
- << ", reported " << in->reported_size << dendl;
- goto ack;
- }
-
- /* completed revocation? */
- if (revoking && (revoking & cap_used) == 0) {
- ldout(cct, 10) << "completed revocation of " << ccap_string(cap->implemented & ~cap->issued) << dendl;
- goto ack;
- }
-
- /* want more caps from mds? */
- if (wanted & ~(cap->wanted | cap->issued))
- goto ack;
-
- if (!revoking && unmounting && (cap_used == 0))
- goto ack;
-
- if (wanted == cap->wanted && // mds knows what we want.
- ((cap->issued & ~retain) == 0) &&// and we don't have anything we wouldn't like
- !in->dirty_caps) // and we have no dirty caps
- continue;
-
- if (now < in->hold_caps_until) {
- ldout(cct, 10) << "delaying cap release" << dendl;
- continue;
- }
-
- ack:
- // re-send old cap/snapcap flushes first.
- if (session->mds_state >= MDSMap::STATE_RECONNECT &&
- session->mds_state < MDSMap::STATE_ACTIVE &&
- session->early_flushing_caps.count(in) == 0) {
- ldout(cct, 20) << " reflushing caps (check_caps) on " << *in
- << " to mds." << session->mds_num << dendl;
- session->early_flushing_caps.insert(in);
- if (in->cap_snaps.size())
- flush_snaps(in, true);
- if (in->flushing_caps)
- flush_caps(in, session, flags & CHECK_CAPS_SYNCHRONOUS);
- }
-
- int flushing;
- ceph_tid_t flush_tid;
- if (in->auth_cap == cap && in->dirty_caps) {
- flushing = mark_caps_flushing(in, &flush_tid);
- } else {
- flushing = 0;
- flush_tid = 0;
- }
-
- send_cap(in, session, cap, flags & CHECK_CAPS_SYNCHRONOUS, cap_used, wanted,
- retain, flushing, flush_tid);
- }
-}
-
-
-void Client::queue_cap_snap(Inode *in, SnapContext& old_snapc)
-{
- int used = get_caps_used(in);
- int dirty = in->caps_dirty();
- ldout(cct, 10) << "queue_cap_snap " << *in << " snapc " << old_snapc << " used " << ccap_string(used) << dendl;
-
- if (in->cap_snaps.size() &&
- in->cap_snaps.rbegin()->second.writing) {
- ldout(cct, 10) << "queue_cap_snap already have pending cap_snap on " << *in << dendl;
- return;
- } else if (in->caps_dirty() ||
- (used & CEPH_CAP_FILE_WR) ||
- (dirty & CEPH_CAP_ANY_WR)) {
- const auto &capsnapem = in->cap_snaps.emplace(std::piecewise_construct, std::make_tuple(old_snapc.seq), std::make_tuple(in));
- assert(capsnapem.second == true); /* element inserted */
- CapSnap &capsnap = capsnapem.first->second;
- capsnap.context = old_snapc;
- capsnap.issued = in->caps_issued();
- capsnap.dirty = in->caps_dirty();
-
- capsnap.dirty_data = (used & CEPH_CAP_FILE_BUFFER);
-
- capsnap.uid = in->uid;
- capsnap.gid = in->gid;
- capsnap.mode = in->mode;
- capsnap.btime = in->btime;
- capsnap.xattrs = in->xattrs;
- capsnap.xattr_version = in->xattr_version;
-
- if (used & CEPH_CAP_FILE_WR) {
- ldout(cct, 10) << "queue_cap_snap WR used on " << *in << dendl;
- capsnap.writing = 1;
- } else {
- finish_cap_snap(in, capsnap, used);
- }
- } else {
- ldout(cct, 10) << "queue_cap_snap not dirty|writing on " << *in << dendl;
- }
-}
-
-void Client::finish_cap_snap(Inode *in, CapSnap &capsnap, int used)
-{
- ldout(cct, 10) << "finish_cap_snap " << *in << " capsnap " << (void *)&capsnap << " used " << ccap_string(used) << dendl;
- capsnap.size = in->size;
- capsnap.mtime = in->mtime;
- capsnap.atime = in->atime;
- capsnap.ctime = in->ctime;
- capsnap.time_warp_seq = in->time_warp_seq;
- capsnap.change_attr = in->change_attr;
-
- capsnap.dirty |= in->caps_dirty();
-
- if (capsnap.dirty & CEPH_CAP_FILE_WR) {
- capsnap.inline_data = in->inline_data;
- capsnap.inline_version = in->inline_version;
- }
-
- if (used & CEPH_CAP_FILE_BUFFER) {
- ldout(cct, 10) << "finish_cap_snap " << *in << " cap_snap " << &capsnap << " used " << used
- << " WRBUFFER, delaying" << dendl;
- } else {
- capsnap.dirty_data = 0;
- flush_snaps(in);
- }
-}
-
-void Client::_flushed_cap_snap(Inode *in, snapid_t seq)
-{
- ldout(cct, 10) << "_flushed_cap_snap seq " << seq << " on " << *in << dendl;
- in->cap_snaps.at(seq).dirty_data = 0;
- flush_snaps(in);
-}
-
-void Client::flush_snaps(Inode *in, bool all_again)
-{
- ldout(cct, 10) << "flush_snaps on " << *in << " all_again " << all_again << dendl;
- assert(in->cap_snaps.size());
-
- // pick auth mds
- assert(in->auth_cap);
- MetaSession *session = in->auth_cap->session;
- int mseq = in->auth_cap->mseq;
-
- for (auto &p : in->cap_snaps) {
- CapSnap &capsnap = p.second;
- if (!all_again) {
- // only flush once per session
- if (capsnap.flush_tid > 0)
- continue;
- }
-
- ldout(cct, 10) << "flush_snaps mds." << session->mds_num
- << " follows " << p.first
- << " size " << capsnap.size
- << " mtime " << capsnap.mtime
- << " dirty_data=" << capsnap.dirty_data
- << " writing=" << capsnap.writing
- << " on " << *in << dendl;
- if (capsnap.dirty_data || capsnap.writing)
- continue;
-
- if (capsnap.flush_tid == 0) {
- capsnap.flush_tid = ++last_flush_tid;
- if (!in->flushing_cap_item.is_on_list())
- session->flushing_caps.push_back(&in->flushing_cap_item);
- session->flushing_caps_tids.insert(capsnap.flush_tid);
- }
-
- MClientCaps *m = new MClientCaps(CEPH_CAP_OP_FLUSHSNAP, in->ino, in->snaprealm->ino, 0, mseq,
- cap_epoch_barrier);
- if (user_id >= 0)
- m->caller_uid = user_id;
- if (group_id >= 0)
- m->caller_gid = group_id;
-
- m->set_client_tid(capsnap.flush_tid);
- m->head.snap_follows = p.first;
-
- m->head.caps = capsnap.issued;
- m->head.dirty = capsnap.dirty;
-
- m->head.uid = capsnap.uid;
- m->head.gid = capsnap.gid;
- m->head.mode = capsnap.mode;
- m->btime = capsnap.btime;
-
- m->size = capsnap.size;
-
- m->head.xattr_version = capsnap.xattr_version;
- ::encode(capsnap.xattrs, m->xattrbl);
-
- m->ctime = capsnap.ctime;
- m->btime = capsnap.btime;
- m->mtime = capsnap.mtime;
- m->atime = capsnap.atime;
- m->time_warp_seq = capsnap.time_warp_seq;
- m->change_attr = capsnap.change_attr;
-
- if (capsnap.dirty & CEPH_CAP_FILE_WR) {
- m->inline_version = in->inline_version;
- m->inline_data = in->inline_data;
- }
-
- assert(!session->flushing_caps_tids.empty());
- m->set_oldest_flush_tid(*session->flushing_caps_tids.begin());
-
- session->con->send_message(m);
- }
-}
-
-
-
-void Client::wait_on_list(list<Cond*>& ls)
-{
- Cond cond;
- ls.push_back(&cond);
- cond.Wait(client_lock);
- ls.remove(&cond);
-}
-
-void Client::signal_cond_list(list<Cond*>& ls)
-{
- for (list<Cond*>::iterator it = ls.begin(); it != ls.end(); ++it)
- (*it)->Signal();
-}
-
-void Client::wait_on_context_list(list<Context*>& ls)
-{
- Cond cond;
- bool done = false;
- int r;
- ls.push_back(new C_Cond(&cond, &done, &r));
- while (!done)
- cond.Wait(client_lock);
-}
-
-void Client::signal_context_list(list<Context*>& ls)
-{
- while (!ls.empty()) {
- ls.front()->complete(0);
- ls.pop_front();
- }
-}
-
-void Client::wake_inode_waiters(MetaSession *s)
-{
- xlist<Cap*>::iterator iter = s->caps.begin();
- while (!iter.end()){
- signal_cond_list((*iter)->inode->waitfor_caps);
- ++iter;
- }
-}
-
-
-// flush dirty data (from objectcache)
-
-class C_Client_CacheInvalidate : public Context {
-private:
- Client *client;
- vinodeno_t ino;
- int64_t offset, length;
-public:
- C_Client_CacheInvalidate(Client *c, Inode *in, int64_t off, int64_t len) :
- client(c), offset(off), length(len) {
- if (client->use_faked_inos())
- ino = vinodeno_t(in->faked_ino, CEPH_NOSNAP);
- else
- ino = in->vino();
- }
- void finish(int r) override {
- // _async_invalidate takes the lock when it needs to, call this back from outside of lock.
- assert(!client->client_lock.is_locked_by_me());
- client->_async_invalidate(ino, offset, length);
- }
-};
-
-void Client::_async_invalidate(vinodeno_t ino, int64_t off, int64_t len)
-{
- if (unmounting)
- return;
- ldout(cct, 10) << "_async_invalidate " << ino << " " << off << "~" << len << dendl;
- ino_invalidate_cb(callback_handle, ino, off, len);
-}
-
-void Client::_schedule_invalidate_callback(Inode *in, int64_t off, int64_t len) {
-
- if (ino_invalidate_cb)
- // we queue the invalidate, which calls the callback and decrements the ref
- async_ino_invalidator.queue(new C_Client_CacheInvalidate(this, in, off, len));
-}
-
-void Client::_invalidate_inode_cache(Inode *in)
-{
- ldout(cct, 10) << "_invalidate_inode_cache " << *in << dendl;
-
- // invalidate our userspace inode cache
- if (cct->_conf->client_oc)
- objectcacher->release_set(&in->oset);
-
- _schedule_invalidate_callback(in, 0, 0);
-}
-
-void Client::_invalidate_inode_cache(Inode *in, int64_t off, int64_t len)
-{
- ldout(cct, 10) << "_invalidate_inode_cache " << *in << " " << off << "~" << len << dendl;
-
- // invalidate our userspace inode cache
- if (cct->_conf->client_oc) {
- vector<ObjectExtent> ls;
- Striper::file_to_extents(cct, in->ino, &in->layout, off, len, in->truncate_size, ls);
- objectcacher->discard_set(&in->oset, ls);
- }
-
- _schedule_invalidate_callback(in, off, len);
-}
-
-bool Client::_release(Inode *in)
-{
- ldout(cct, 20) << "_release " << *in << dendl;
- if (in->cap_refs[CEPH_CAP_FILE_CACHE] == 0) {
- _invalidate_inode_cache(in);
- return true;
- }
- return false;
-}
-
-bool Client::_flush(Inode *in, Context *onfinish)
-{
- ldout(cct, 10) << "_flush " << *in << dendl;
-
- if (!in->oset.dirty_or_tx) {
- ldout(cct, 10) << " nothing to flush" << dendl;
- onfinish->complete(0);
- return true;
- }
-
- if (objecter->osdmap_pool_full(in->layout.pool_id)) {
- ldout(cct, 1) << __func__ << ": FULL, purging for ENOSPC" << dendl;
- objectcacher->purge_set(&in->oset);
- if (onfinish) {
- onfinish->complete(-ENOSPC);
- }
- return true;
- }
-
- return objectcacher->flush_set(&in->oset, onfinish);
-}
-
-void Client::_flush_range(Inode *in, int64_t offset, uint64_t size)
-{
- assert(client_lock.is_locked());
- if (!in->oset.dirty_or_tx) {
- ldout(cct, 10) << " nothing to flush" << dendl;
- return;
- }
-
- Mutex flock("Client::_flush_range flock");
- Cond cond;
- bool safe = false;
- Context *onflush = new C_SafeCond(&flock, &cond, &safe);
- bool ret = objectcacher->file_flush(&in->oset, &in->layout, in->snaprealm->get_snap_context(),
- offset, size, onflush);
- if (!ret) {
- // wait for flush
- client_lock.Unlock();
- flock.Lock();
- while (!safe)
- cond.Wait(flock);
- flock.Unlock();
- client_lock.Lock();
- }
-}
-
-void Client::flush_set_callback(ObjectCacher::ObjectSet *oset)
-{
- // Mutex::Locker l(client_lock);
- assert(client_lock.is_locked()); // will be called via dispatch() -> objecter -> ...
- Inode *in = static_cast<Inode *>(oset->parent);
- assert(in);
- _flushed(in);
-}
-
-void Client::_flushed(Inode *in)
-{
- ldout(cct, 10) << "_flushed " << *in << dendl;
-
- put_cap_ref(in, CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_BUFFER);
-}
-
-
-
-// checks common to add_update_cap, handle_cap_grant
-void Client::check_cap_issue(Inode *in, Cap *cap, unsigned issued)
-{
- unsigned had = in->caps_issued();
-
- if ((issued & CEPH_CAP_FILE_CACHE) &&
- !(had & CEPH_CAP_FILE_CACHE))
- in->cache_gen++;
-
- if ((issued & CEPH_CAP_FILE_SHARED) &&
- !(had & CEPH_CAP_FILE_SHARED)) {
- in->shared_gen++;
-
- if (in->is_dir())
- clear_dir_complete_and_ordered(in, true);
- }
-}
-
-void Client::add_update_cap(Inode *in, MetaSession *mds_session, uint64_t cap_id,
- unsigned issued, unsigned seq, unsigned mseq, inodeno_t realm,
- int flags, const UserPerm& cap_perms)
-{
- Cap *cap = 0;
- mds_rank_t mds = mds_session->mds_num;
- if (in->caps.count(mds)) {
- cap = in->caps[mds];
-
- /*
- * auth mds of the inode changed. we received the cap export
- * message, but still haven't received the cap import message.
- * handle_cap_export() updated the new auth MDS' cap.
- *
- * "ceph_seq_cmp(seq, cap->seq) <= 0" means we are processing
- * a message that was send before the cap import message. So
- * don't remove caps.
- */
- if (ceph_seq_cmp(seq, cap->seq) <= 0) {
- assert(cap == in->auth_cap);
- assert(cap->cap_id == cap_id);
- seq = cap->seq;
- mseq = cap->mseq;
- issued |= cap->issued;
- flags |= CEPH_CAP_FLAG_AUTH;
- }
- } else {
- mds_session->num_caps++;
- if (!in->is_any_caps()) {
- assert(in->snaprealm == 0);
- in->snaprealm = get_snap_realm(realm);
- in->snaprealm->inodes_with_caps.push_back(&in->snaprealm_item);
- ldout(cct, 15) << "add_update_cap first one, opened snaprealm " << in->snaprealm << dendl;
- }
- in->caps[mds] = cap = new Cap;
-
- mds_session->caps.push_back(&cap->cap_item);
- cap->session = mds_session;
- cap->inode = in;
- cap->gen = mds_session->cap_gen;
- cap_list.push_back(&in->cap_item);
- }
-
- check_cap_issue(in, cap, issued);
-
- if (flags & CEPH_CAP_FLAG_AUTH) {
- if (in->auth_cap != cap &&
- (!in->auth_cap || ceph_seq_cmp(in->auth_cap->mseq, mseq) < 0)) {
- if (in->auth_cap && in->flushing_cap_item.is_on_list()) {
- ldout(cct, 10) << "add_update_cap changing auth cap: "
- << "add myself to new auth MDS' flushing caps list" << dendl;
- adjust_session_flushing_caps(in, in->auth_cap->session, mds_session);
- }
- in->auth_cap = cap;
- }
- }
-
- unsigned old_caps = cap->issued;
- cap->cap_id = cap_id;
- cap->issued |= issued;
- cap->implemented |= issued;
- cap->seq = seq;
- cap->issue_seq = seq;
- cap->mseq = mseq;
- cap->latest_perms = cap_perms;
- ldout(cct, 10) << "add_update_cap issued " << ccap_string(old_caps) << " -> " << ccap_string(cap->issued)
- << " from mds." << mds
- << " on " << *in
- << dendl;
-
- if ((issued & ~old_caps) && in->auth_cap == cap) {
- // non-auth MDS is revoking the newly grant caps ?
- for (map<mds_rank_t,Cap*>::iterator it = in->caps.begin(); it != in->caps.end(); ++it) {
- if (it->second == cap)
- continue;
- if (it->second->implemented & ~it->second->issued & issued) {
- check_caps(in, CHECK_CAPS_NODELAY);
- break;
- }
- }
- }
-
- if (issued & ~old_caps)
- signal_cond_list(in->waitfor_caps);
-}
-
-void Client::remove_cap(Cap *cap, bool queue_release)
-{
- Inode *in = cap->inode;
- MetaSession *session = cap->session;
- mds_rank_t mds = cap->session->mds_num;
-
- ldout(cct, 10) << "remove_cap mds." << mds << " on " << *in << dendl;
-
- if (queue_release) {
- session->enqueue_cap_release(
- in->ino,
- cap->cap_id,
- cap->issue_seq,
- cap->mseq,
- cap_epoch_barrier);
- }
-
- if (in->auth_cap == cap) {
- if (in->flushing_cap_item.is_on_list()) {
- ldout(cct, 10) << " removing myself from flushing_cap list" << dendl;
- in->flushing_cap_item.remove_myself();
- }
- in->auth_cap = NULL;
- }
- assert(in->caps.count(mds));
- in->caps.erase(mds);
-
- cap->cap_item.remove_myself();
- delete cap;
- cap = nullptr;
-
- if (!in->is_any_caps()) {
- ldout(cct, 15) << "remove_cap last one, closing snaprealm " << in->snaprealm << dendl;
- in->snaprealm_item.remove_myself();
- put_snap_realm(in->snaprealm);
- in->snaprealm = 0;
- }
-}
-
-void Client::remove_all_caps(Inode *in)
-{
- while (!in->caps.empty())
- remove_cap(in->caps.begin()->second, true);
-}
-
-void Client::remove_session_caps(MetaSession *s)
-{
- ldout(cct, 10) << "remove_session_caps mds." << s->mds_num << dendl;
-
- while (s->caps.size()) {
- Cap *cap = *s->caps.begin();
- Inode *in = cap->inode;
- bool dirty_caps = false, cap_snaps = false;
- if (in->auth_cap == cap) {
- cap_snaps = !in->cap_snaps.empty();
- dirty_caps = in->dirty_caps | in->flushing_caps;
- in->wanted_max_size = 0;
- in->requested_max_size = 0;
- in->flags |= I_CAP_DROPPED;
- }
- remove_cap(cap, false);
- signal_cond_list(in->waitfor_caps);
- if (cap_snaps) {
- InodeRef tmp_ref(in);
- in->cap_snaps.clear();
- }
- if (dirty_caps) {
- lderr(cct) << "remove_session_caps still has dirty|flushing caps on " << *in << dendl;
- if (in->flushing_caps) {
- num_flushing_caps--;
- in->flushing_cap_tids.clear();
- }
- in->flushing_caps = 0;
- in->dirty_caps = 0;
- put_inode(in);
- }
- }
- s->flushing_caps_tids.clear();
- sync_cond.Signal();
-}
-
-class C_Client_Remount : public Context {
-private:
- Client *client;
-public:
- explicit C_Client_Remount(Client *c) : client(c) {}
- void finish(int r) override {
- assert (r == 0);
- r = client->remount_cb(client->callback_handle);
- if (r != 0) {
- client_t whoami = client->get_nodeid();
- lderr(client->cct) << "tried to remount (to trim kernel dentries) and got error "
- << r << dendl;
- if (client->require_remount && !client->unmounting) {
- assert(0 == "failed to remount for kernel dentry trimming");
- }
- }
- }
-};
-
-void Client::_invalidate_kernel_dcache()
-{
- if (unmounting)
- return;
- if (can_invalidate_dentries && dentry_invalidate_cb && root->dir) {
- for (ceph::unordered_map<string, Dentry*>::iterator p = root->dir->dentries.begin();
- p != root->dir->dentries.end();
- ++p) {
- if (p->second->inode)
- _schedule_invalidate_dentry_callback(p->second, false);
- }
- } else if (remount_cb) {
- // Hacky:
- // when remounting a file system, linux kernel trims all unused dentries in the fs
- remount_finisher.queue(new C_Client_Remount(this));
- }
-}
-
-void Client::trim_caps(MetaSession *s, int max)
-{
- mds_rank_t mds = s->mds_num;
- int caps_size = s->caps.size();
- ldout(cct, 10) << "trim_caps mds." << mds << " max " << max
- << " caps " << caps_size << dendl;
-
- int trimmed = 0;
- xlist<Cap*>::iterator p = s->caps.begin();
- while ((caps_size - trimmed) > max && !p.end()) {
- Cap *cap = *p;
- Inode *in = cap->inode;
-
- // Increment p early because it will be invalidated if cap
- // is deleted inside remove_cap
- ++p;
-
- if (in->caps.size() > 1 && cap != in->auth_cap) {
- int mine = cap->issued | cap->implemented;
- int oissued = in->auth_cap ? in->auth_cap->issued : 0;
- // disposable non-auth cap
- if (!(get_caps_used(in) & ~oissued & mine)) {
- ldout(cct, 20) << " removing unused, unneeded non-auth cap on " << *in << dendl;
- remove_cap(cap, true);
- trimmed++;
- }
- } else {
- ldout(cct, 20) << " trying to trim dentries for " << *in << dendl;
- bool all = true;
- set<Dentry*>::iterator q = in->dn_set.begin();
- InodeRef tmp_ref(in);
- while (q != in->dn_set.end()) {
- Dentry *dn = *q++;
- if (dn->lru_is_expireable()) {
- if (can_invalidate_dentries &&
- dn->dir->parent_inode->ino == MDS_INO_ROOT) {
- // Only issue one of these per DN for inodes in root: handle
- // others more efficiently by calling for root-child DNs at
- // the end of this function.
- _schedule_invalidate_dentry_callback(dn, true);
- }
- trim_dentry(dn);
- } else {
- ldout(cct, 20) << " not expirable: " << dn->name << dendl;
- all = false;
- }
- }
- if (all && in->ino != MDS_INO_ROOT) {
- ldout(cct, 20) << __func__ << " counting as trimmed: " << *in << dendl;
- trimmed++;
- }
- }
- }
-
- if (s->caps.size() > max)
- _invalidate_kernel_dcache();
-}
-
-void Client::force_session_readonly(MetaSession *s)
-{
- s->readonly = true;
- for (xlist<Cap*>::iterator p = s->caps.begin(); !p.end(); ++p) {
- Inode *in = (*p)->inode;
- if (in->caps_wanted() & CEPH_CAP_FILE_WR)
- signal_cond_list(in->waitfor_caps);
- }
-}
-
-void Client::mark_caps_dirty(Inode *in, int caps)
-{
- ldout(cct, 10) << "mark_caps_dirty " << *in << " " << ccap_string(in->dirty_caps) << " -> "
- << ccap_string(in->dirty_caps | caps) << dendl;
- if (caps && !in->caps_dirty())
- in->get();
- in->dirty_caps |= caps;
-}
-
-int Client::mark_caps_flushing(Inode *in, ceph_tid_t* ptid)
-{
- MetaSession *session = in->auth_cap->session;
-
- int flushing = in->dirty_caps;
- assert(flushing);
-
- ceph_tid_t flush_tid = ++last_flush_tid;
- in->flushing_cap_tids[flush_tid] = flushing;
-
- if (!in->flushing_caps) {
- ldout(cct, 10) << "mark_caps_flushing " << ccap_string(flushing) << " " << *in << dendl;
- num_flushing_caps++;
- } else {
- ldout(cct, 10) << "mark_caps_flushing (more) " << ccap_string(flushing) << " " << *in << dendl;
- }
-
- in->flushing_caps |= flushing;
- in->dirty_caps = 0;
-
- if (!in->flushing_cap_item.is_on_list())
- session->flushing_caps.push_back(&in->flushing_cap_item);
- session->flushing_caps_tids.insert(flush_tid);
-
- *ptid = flush_tid;
- return flushing;
-}
-
-void Client::adjust_session_flushing_caps(Inode *in, MetaSession *old_s, MetaSession *new_s)
-{
- for (auto &p : in->cap_snaps) {
- CapSnap &capsnap = p.second;
- if (capsnap.flush_tid > 0) {
- old_s->flushing_caps_tids.erase(capsnap.flush_tid);
- new_s->flushing_caps_tids.insert(capsnap.flush_tid);
- }
- }
- for (map<ceph_tid_t, int>::iterator it = in->flushing_cap_tids.begin();
- it != in->flushing_cap_tids.end();
- ++it) {
- old_s->flushing_caps_tids.erase(it->first);
- new_s->flushing_caps_tids.insert(it->first);
- }
- new_s->flushing_caps.push_back(&in->flushing_cap_item);
-}
-
-/*
- * Flush all caps back to the MDS. Because the callers generally wait on the
- * result of this function (syncfs and umount cases), we set
- * CHECK_CAPS_SYNCHRONOUS on the last check_caps call.
- */
-void Client::flush_caps_sync()
-{
- ldout(cct, 10) << __func__ << dendl;
- xlist<Inode*>::iterator p = delayed_caps.begin();
- while (!p.end()) {
- unsigned flags = CHECK_CAPS_NODELAY;
- Inode *in = *p;
-
- ++p;
- delayed_caps.pop_front();
- if (p.end() && cap_list.empty())
- flags |= CHECK_CAPS_SYNCHRONOUS;
- check_caps(in, flags);
- }
-
- // other caps, too
- p = cap_list.begin();
- while (!p.end()) {
- unsigned flags = CHECK_CAPS_NODELAY;
- Inode *in = *p;
-
- ++p;
- if (p.end())
- flags |= CHECK_CAPS_SYNCHRONOUS;
- check_caps(in, flags);
- }
-}
-
-void Client::flush_caps(Inode *in, MetaSession *session, bool sync)
-{
- ldout(cct, 10) << "flush_caps " << in << " mds." << session->mds_num << dendl;
- Cap *cap = in->auth_cap;
- assert(cap->session == session);
-
- for (map<ceph_tid_t,int>::iterator p = in->flushing_cap_tids.begin();
- p != in->flushing_cap_tids.end();
- ++p) {
- bool req_sync = false;
-
- /* If this is a synchronous request, then flush the journal on last one */
- if (sync && (p->first == in->flushing_cap_tids.rbegin()->first))
- req_sync = true;
-
- send_cap(in, session, cap, req_sync,
- (get_caps_used(in) | in->caps_dirty()),
- in->caps_wanted(), (cap->issued | cap->implemented),
- p->second, p->first);
- }
-}
-
-void Client::wait_sync_caps(Inode *in, ceph_tid_t want)
-{
- while (in->flushing_caps) {
- map<ceph_tid_t, int>::iterator it = in->flushing_cap_tids.begin();
- assert(it != in->flushing_cap_tids.end());
- if (it->first > want)
- break;
- ldout(cct, 10) << "wait_sync_caps on " << *in << " flushing "
- << ccap_string(it->second) << " want " << want
- << " last " << it->first << dendl;
- wait_on_list(in->waitfor_caps);
- }
-}
-
-void Client::wait_sync_caps(ceph_tid_t want)
-{
- retry:
- ldout(cct, 10) << "wait_sync_caps want " << want << " (last is " << last_flush_tid << ", "
- << num_flushing_caps << " total flushing)" << dendl;
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p) {
- MetaSession *s = p->second;
- if (s->flushing_caps_tids.empty())
- continue;
- ceph_tid_t oldest_tid = *s->flushing_caps_tids.begin();
- if (oldest_tid <= want) {
- ldout(cct, 10) << " waiting on mds." << p->first << " tid " << oldest_tid
- << " (want " << want << ")" << dendl;
- sync_cond.Wait(client_lock);
- goto retry;
- }
- }
-}
-
-void Client::kick_flushing_caps(MetaSession *session)
-{
- mds_rank_t mds = session->mds_num;
- ldout(cct, 10) << "kick_flushing_caps mds." << mds << dendl;
-
- for (xlist<Inode*>::iterator p = session->flushing_caps.begin(); !p.end(); ++p) {
- Inode *in = *p;
- if (session->early_flushing_caps.count(in))
- continue;
- ldout(cct, 20) << " reflushing caps on " << *in << " to mds." << mds << dendl;
- if (in->cap_snaps.size())
- flush_snaps(in, true);
- if (in->flushing_caps)
- flush_caps(in, session);
- }
-
- session->early_flushing_caps.clear();
-}
-
-void Client::early_kick_flushing_caps(MetaSession *session)
-{
- session->early_flushing_caps.clear();
-
- for (xlist<Inode*>::iterator p = session->flushing_caps.begin(); !p.end(); ++p) {
- Inode *in = *p;
- assert(in->auth_cap);
-
- // if flushing caps were revoked, we re-send the cap flush in client reconnect
- // stage. This guarantees that MDS processes the cap flush message before issuing
- // the flushing caps to other client.
- if ((in->flushing_caps & in->auth_cap->issued) == in->flushing_caps)
- continue;
-
- ldout(cct, 20) << " reflushing caps (early_kick) on " << *in
- << " to mds." << session->mds_num << dendl;
-
- session->early_flushing_caps.insert(in);
-
- if (in->cap_snaps.size())
- flush_snaps(in, true);
- if (in->flushing_caps)
- flush_caps(in, session);
-
- }
-}
-
-void Client::kick_maxsize_requests(MetaSession *session)
-{
- xlist<Cap*>::iterator iter = session->caps.begin();
- while (!iter.end()){
- (*iter)->inode->requested_max_size = 0;
- (*iter)->inode->wanted_max_size = 0;
- signal_cond_list((*iter)->inode->waitfor_caps);
- ++iter;
- }
-}
-
-void SnapRealm::build_snap_context()
-{
- set<snapid_t> snaps;
- snapid_t max_seq = seq;
-
- // start with prior_parents?
- for (unsigned i=0; i<prior_parent_snaps.size(); i++)
- snaps.insert(prior_parent_snaps[i]);
-
- // current parent's snaps
- if (pparent) {
- const SnapContext& psnapc = pparent->get_snap_context();
- for (unsigned i=0; i<psnapc.snaps.size(); i++)
- if (psnapc.snaps[i] >= parent_since)
- snaps.insert(psnapc.snaps[i]);
- if (psnapc.seq > max_seq)
- max_seq = psnapc.seq;
- }
-
- // my snaps
- for (unsigned i=0; i<my_snaps.size(); i++)
- snaps.insert(my_snaps[i]);
-
- // ok!
- cached_snap_context.seq = max_seq;
- cached_snap_context.snaps.resize(0);
- cached_snap_context.snaps.reserve(snaps.size());
- for (set<snapid_t>::reverse_iterator p = snaps.rbegin(); p != snaps.rend(); ++p)
- cached_snap_context.snaps.push_back(*p);
-}
-
-void Client::invalidate_snaprealm_and_children(SnapRealm *realm)
-{
- list<SnapRealm*> q;
- q.push_back(realm);
-
- while (!q.empty()) {
- realm = q.front();
- q.pop_front();
-
- ldout(cct, 10) << "invalidate_snaprealm_and_children " << *realm << dendl;
- realm->invalidate_cache();
-
- for (set<SnapRealm*>::iterator p = realm->pchildren.begin();
- p != realm->pchildren.end();
- ++p)
- q.push_back(*p);
- }
-}
-
-SnapRealm *Client::get_snap_realm(inodeno_t r)
-{
- SnapRealm *realm = snap_realms[r];
- if (!realm)
- snap_realms[r] = realm = new SnapRealm(r);
- ldout(cct, 20) << "get_snap_realm " << r << " " << realm << " " << realm->nref << " -> " << (realm->nref + 1) << dendl;
- realm->nref++;
- return realm;
-}
-
-SnapRealm *Client::get_snap_realm_maybe(inodeno_t r)
-{
- if (snap_realms.count(r) == 0) {
- ldout(cct, 20) << "get_snap_realm_maybe " << r << " fail" << dendl;
- return NULL;
- }
- SnapRealm *realm = snap_realms[r];
- ldout(cct, 20) << "get_snap_realm_maybe " << r << " " << realm << " " << realm->nref << " -> " << (realm->nref + 1) << dendl;
- realm->nref++;
- return realm;
-}
-
-void Client::put_snap_realm(SnapRealm *realm)
-{
- ldout(cct, 20) << "put_snap_realm " << realm->ino << " " << realm
- << " " << realm->nref << " -> " << (realm->nref - 1) << dendl;
- if (--realm->nref == 0) {
- snap_realms.erase(realm->ino);
- if (realm->pparent) {
- realm->pparent->pchildren.erase(realm);
- put_snap_realm(realm->pparent);
- }
- delete realm;
- }
-}
-
-bool Client::adjust_realm_parent(SnapRealm *realm, inodeno_t parent)
-{
- if (realm->parent != parent) {
- ldout(cct, 10) << "adjust_realm_parent " << *realm
- << " " << realm->parent << " -> " << parent << dendl;
- realm->parent = parent;
- if (realm->pparent) {
- realm->pparent->pchildren.erase(realm);
- put_snap_realm(realm->pparent);
- }
- realm->pparent = get_snap_realm(parent);
- realm->pparent->pchildren.insert(realm);
- return true;
- }
- return false;
-}
-
-static bool has_new_snaps(const SnapContext& old_snapc,
- const SnapContext& new_snapc)
-{
- return !new_snapc.snaps.empty() && new_snapc.snaps[0] > old_snapc.seq;
-}
-
-
-void Client::update_snap_trace(bufferlist& bl, SnapRealm **realm_ret, bool flush)
-{
- SnapRealm *first_realm = NULL;
- ldout(cct, 10) << "update_snap_trace len " << bl.length() << dendl;
-
- map<SnapRealm*, SnapContext> dirty_realms;
-
- bufferlist::iterator p = bl.begin();
- while (!p.end()) {
- SnapRealmInfo info;
- ::decode(info, p);
- SnapRealm *realm = get_snap_realm(info.ino());
-
- bool invalidate = false;
-
- if (info.seq() > realm->seq) {
- ldout(cct, 10) << "update_snap_trace " << *realm << " seq " << info.seq() << " > " << realm->seq
- << dendl;
-
- if (flush) {
- // writeback any dirty caps _before_ updating snap list (i.e. with old snap info)
- // flush me + children
- list<SnapRealm*> q;
- q.push_back(realm);
- while (!q.empty()) {
- SnapRealm *realm = q.front();
- q.pop_front();
-
- for (set<SnapRealm*>::iterator p = realm->pchildren.begin();
- p != realm->pchildren.end();
- ++p)
- q.push_back(*p);
-
- if (dirty_realms.count(realm) == 0) {
- realm->nref++;
- dirty_realms[realm] = realm->get_snap_context();
- }
- }
- }
-
- // update
- realm->seq = info.seq();
- realm->created = info.created();
- realm->parent_since = info.parent_since();
- realm->prior_parent_snaps = info.prior_parent_snaps;
- realm->my_snaps = info.my_snaps;
- invalidate = true;
- }
-
- // _always_ verify parent
- if (adjust_realm_parent(realm, info.parent()))
- invalidate = true;
-
- if (invalidate) {
- invalidate_snaprealm_and_children(realm);
- ldout(cct, 15) << "update_snap_trace " << *realm << " self|parent updated" << dendl;
- ldout(cct, 15) << " snapc " << realm->get_snap_context() << dendl;
- } else {
- ldout(cct, 10) << "update_snap_trace " << *realm << " seq " << info.seq()
- << " <= " << realm->seq << " and same parent, SKIPPING" << dendl;
- }
-
- if (!first_realm)
- first_realm = realm;
- else
- put_snap_realm(realm);
- }
-
- for (map<SnapRealm*, SnapContext>::iterator q = dirty_realms.begin();
- q != dirty_realms.end();
- ++q) {
- SnapRealm *realm = q->first;
- // if there are new snaps ?
- if (has_new_snaps(q->second, realm->get_snap_context())) {
- ldout(cct, 10) << " flushing caps on " << *realm << dendl;
- xlist<Inode*>::iterator r = realm->inodes_with_caps.begin();
- while (!r.end()) {
- Inode *in = *r;
- ++r;
- queue_cap_snap(in, q->second);
- }
- } else {
- ldout(cct, 10) << " no new snap on " << *realm << dendl;
- }
- put_snap_realm(realm);
- }
-
- if (realm_ret)
- *realm_ret = first_realm;
- else
- put_snap_realm(first_realm);
-}
-
-void Client::handle_snap(MClientSnap *m)
-{
- ldout(cct, 10) << "handle_snap " << *m << dendl;
- mds_rank_t mds = mds_rank_t(m->get_source().num());
- MetaSession *session = _get_mds_session(mds, m->get_connection().get());
- if (!session) {
- m->put();
- return;
- }
-
- got_mds_push(session);
-
- map<Inode*, SnapContext> to_move;
- SnapRealm *realm = 0;
-
- if (m->head.op == CEPH_SNAP_OP_SPLIT) {
- assert(m->head.split);
- SnapRealmInfo info;
- bufferlist::iterator p = m->bl.begin();
- ::decode(info, p);
- assert(info.ino() == m->head.split);
-
- // flush, then move, ino's.
- realm = get_snap_realm(info.ino());
- ldout(cct, 10) << " splitting off " << *realm << dendl;
- for (vector<inodeno_t>::iterator p = m->split_inos.begin();
- p != m->split_inos.end();
- ++p) {
- vinodeno_t vino(*p, CEPH_NOSNAP);
- if (inode_map.count(vino)) {
- Inode *in = inode_map[vino];
- if (!in->snaprealm || in->snaprealm == realm)
- continue;
- if (in->snaprealm->created > info.created()) {
- ldout(cct, 10) << " NOT moving " << *in << " from _newer_ realm "
- << *in->snaprealm << dendl;
- continue;
- }
- ldout(cct, 10) << " moving " << *in << " from " << *in->snaprealm << dendl;
-
-
- in->snaprealm_item.remove_myself();
- to_move[in] = in->snaprealm->get_snap_context();
- put_snap_realm(in->snaprealm);
- }
- }
-
- // move child snaprealms, too
- for (vector<inodeno_t>::iterator p = m->split_realms.begin();
- p != m->split_realms.end();
- ++p) {
- ldout(cct, 10) << "adjusting snaprealm " << *p << " parent" << dendl;
- SnapRealm *child = get_snap_realm_maybe(*p);
- if (!child)
- continue;
- adjust_realm_parent(child, realm->ino);
- put_snap_realm(child);
- }
- }
-
- update_snap_trace(m->bl, NULL, m->head.op != CEPH_SNAP_OP_DESTROY);
-
- if (realm) {
- for (auto p = to_move.begin(); p != to_move.end(); ++p) {
- Inode *in = p->first;
- in->snaprealm = realm;
- realm->inodes_with_caps.push_back(&in->snaprealm_item);
- realm->nref++;
- // queue for snap writeback
- if (has_new_snaps(p->second, realm->get_snap_context()))
- queue_cap_snap(in, p->second);
- }
- put_snap_realm(realm);
- }
-
- m->put();
-}
-
-void Client::handle_quota(MClientQuota *m)
-{
- mds_rank_t mds = mds_rank_t(m->get_source().num());
- MetaSession *session = _get_mds_session(mds, m->get_connection().get());
- if (!session) {
- m->put();
- return;
- }
-
- got_mds_push(session);
-
- ldout(cct, 10) << "handle_quota " << *m << " from mds." << mds << dendl;
-
- vinodeno_t vino(m->ino, CEPH_NOSNAP);
- if (inode_map.count(vino)) {
- Inode *in = NULL;
- in = inode_map[vino];
-
- if (in) {
- in->quota = m->quota;
- in->rstat = m->rstat;
- }
- }
-
- m->put();
-}
-
-void Client::handle_caps(MClientCaps *m)
-{
- mds_rank_t mds = mds_rank_t(m->get_source().num());
- MetaSession *session = _get_mds_session(mds, m->get_connection().get());
- if (!session) {
- m->put();
- return;
- }
-
- if (m->osd_epoch_barrier && !objecter->have_map(m->osd_epoch_barrier)) {
- // Pause RADOS operations until we see the required epoch
- objecter->set_epoch_barrier(m->osd_epoch_barrier);
- }
-
- if (m->osd_epoch_barrier > cap_epoch_barrier) {
- // Record the barrier so that we will transmit it to MDS when releasing
- set_cap_epoch_barrier(m->osd_epoch_barrier);
- }
-
- got_mds_push(session);
-
- m->clear_payload(); // for if/when we send back to MDS
-
- Inode *in = 0;
- vinodeno_t vino(m->get_ino(), CEPH_NOSNAP);
- if (inode_map.count(vino))
- in = inode_map[vino];
- if (!in) {
- if (m->get_op() == CEPH_CAP_OP_IMPORT) {
- ldout(cct, 5) << "handle_caps don't have vino " << vino << " on IMPORT, immediately releasing" << dendl;
- session->enqueue_cap_release(
- m->get_ino(),
- m->get_cap_id(),
- m->get_seq(),
- m->get_mseq(),
- cap_epoch_barrier);
- } else {
- ldout(cct, 5) << "handle_caps don't have vino " << vino << ", dropping" << dendl;
- }
- m->put();
-
- // in case the mds is waiting on e.g. a revocation
- flush_cap_releases();
- return;
- }
-
- switch (m->get_op()) {
- case CEPH_CAP_OP_EXPORT:
- return handle_cap_export(session, in, m);
- case CEPH_CAP_OP_FLUSHSNAP_ACK:
- return handle_cap_flushsnap_ack(session, in, m);
- case CEPH_CAP_OP_IMPORT:
- handle_cap_import(session, in, m);
- }
-
- if (in->caps.count(mds) == 0) {
- ldout(cct, 5) << "handle_caps don't have " << *in << " cap on mds." << mds << dendl;
- m->put();
- return;
- }
-
- Cap *cap = in->caps[mds];
-
- switch (m->get_op()) {
- case CEPH_CAP_OP_TRUNC: return handle_cap_trunc(session, in, m);
- case CEPH_CAP_OP_IMPORT:
- case CEPH_CAP_OP_REVOKE:
- case CEPH_CAP_OP_GRANT: return handle_cap_grant(session, in, cap, m);
- case CEPH_CAP_OP_FLUSH_ACK: return handle_cap_flush_ack(session, in, cap, m);
- default:
- m->put();
- }
-}
-
-void Client::handle_cap_import(MetaSession *session, Inode *in, MClientCaps *m)
-{
- mds_rank_t mds = session->mds_num;
-
- ldout(cct, 5) << "handle_cap_import ino " << m->get_ino() << " mseq " << m->get_mseq()
- << " IMPORT from mds." << mds << dendl;
-
- const mds_rank_t peer_mds = mds_rank_t(m->peer.mds);
- Cap *cap = NULL;
- UserPerm cap_perms;
- if (m->peer.cap_id && in->caps.count(peer_mds)) {
- cap = in->caps[peer_mds];
- if (cap) {
- cap_perms = cap->latest_perms;
- }
- }
-
- // add/update it
- SnapRealm *realm = NULL;
- update_snap_trace(m->snapbl, &realm);
-
- add_update_cap(in, session, m->get_cap_id(),
- m->get_caps(), m->get_seq(), m->get_mseq(), m->get_realm(),
- CEPH_CAP_FLAG_AUTH, cap_perms);
-
- if (cap && cap->cap_id == m->peer.cap_id) {
- remove_cap(cap, (m->peer.flags & CEPH_CAP_FLAG_RELEASE));
- }
-
- if (realm)
- put_snap_realm(realm);
-
- if (in->auth_cap && in->auth_cap->session->mds_num == mds) {
- // reflush any/all caps (if we are now the auth_cap)
- if (in->cap_snaps.size())
- flush_snaps(in, true);
- if (in->flushing_caps)
- flush_caps(in, session);
- }
-}
-
-void Client::handle_cap_export(MetaSession *session, Inode *in, MClientCaps *m)
-{
- mds_rank_t mds = session->mds_num;
-
- ldout(cct, 5) << "handle_cap_export ino " << m->get_ino() << " mseq " << m->get_mseq()
- << " EXPORT from mds." << mds << dendl;
-
- Cap *cap = NULL;
- if (in->caps.count(mds))
- cap = in->caps[mds];
-
- const mds_rank_t peer_mds = mds_rank_t(m->peer.mds);
-
- if (cap && cap->cap_id == m->get_cap_id()) {
- if (m->peer.cap_id) {
- MetaSession *tsession = _get_or_open_mds_session(peer_mds);
- if (in->caps.count(peer_mds)) {
- Cap *tcap = in->caps[peer_mds];
- if (tcap->cap_id == m->peer.cap_id &&
- ceph_seq_cmp(tcap->seq, m->peer.seq) < 0) {
- tcap->cap_id = m->peer.cap_id;
- tcap->seq = m->peer.seq - 1;
- tcap->issue_seq = tcap->seq;
- tcap->mseq = m->peer.mseq;
- tcap->issued |= cap->issued;
- tcap->implemented |= cap->issued;
- if (cap == in->auth_cap)
- in->auth_cap = tcap;
- if (in->auth_cap == tcap && in->flushing_cap_item.is_on_list())
- adjust_session_flushing_caps(in, session, tsession);
- }
- } else {
- add_update_cap(in, tsession, m->peer.cap_id, cap->issued,
- m->peer.seq - 1, m->peer.mseq, (uint64_t)-1,
- cap == in->auth_cap ? CEPH_CAP_FLAG_AUTH : 0,
- cap->latest_perms);
- }
- } else {
- if (cap == in->auth_cap)
- in->flags |= I_CAP_DROPPED;
- }
-
- remove_cap(cap, false);
- }
-
- m->put();
-}
-
-void Client::handle_cap_trunc(MetaSession *session, Inode *in, MClientCaps *m)
-{
- mds_rank_t mds = session->mds_num;
- assert(in->caps[mds]);
-
- ldout(cct, 10) << "handle_cap_trunc on ino " << *in
- << " size " << in->size << " -> " << m->get_size()
- << dendl;
-
- int implemented = 0;
- int issued = in->caps_issued(&implemented) | in->caps_dirty();
- issued |= implemented;
- update_inode_file_bits(in, m->get_truncate_seq(), m->get_truncate_size(),
- m->get_size(), m->get_change_attr(), m->get_time_warp_seq(),
- m->get_ctime(), m->get_mtime(), m->get_atime(),
- m->inline_version, m->inline_data, issued);
- m->put();
-}
-
-void Client::handle_cap_flush_ack(MetaSession *session, Inode *in, Cap *cap, MClientCaps *m)
-{
- ceph_tid_t flush_ack_tid = m->get_client_tid();
- int dirty = m->get_dirty();
- int cleaned = 0;
- int flushed = 0;
-
- for (map<ceph_tid_t, int>::iterator it = in->flushing_cap_tids.begin();
- it != in->flushing_cap_tids.end(); ) {
- if (it->first == flush_ack_tid)
- cleaned = it->second;
- if (it->first <= flush_ack_tid) {
- session->flushing_caps_tids.erase(it->first);
- in->flushing_cap_tids.erase(it++);
- ++flushed;
- continue;
- }
- cleaned &= ~it->second;
- if (!cleaned)
- break;
- ++it;
- }
-
- ldout(cct, 5) << "handle_cap_flush_ack mds." << session->mds_num
- << " cleaned " << ccap_string(cleaned) << " on " << *in
- << " with " << ccap_string(dirty) << dendl;
-
- if (flushed) {
- signal_cond_list(in->waitfor_caps);
- if (session->flushing_caps_tids.empty() ||
- *session->flushing_caps_tids.begin() > flush_ack_tid)
- sync_cond.Signal();
- }
-
- if (!dirty) {
- in->cap_dirtier_uid = -1;
- in->cap_dirtier_gid = -1;
- }
-
- if (!cleaned) {
- ldout(cct, 10) << " tid " << m->get_client_tid() << " != any cap bit tids" << dendl;
- } else {
- if (in->flushing_caps) {
- ldout(cct, 5) << " flushing_caps " << ccap_string(in->flushing_caps)
- << " -> " << ccap_string(in->flushing_caps & ~cleaned) << dendl;
- in->flushing_caps &= ~cleaned;
- if (in->flushing_caps == 0) {
- ldout(cct, 10) << " " << *in << " !flushing" << dendl;
- num_flushing_caps--;
- if (in->cap_snaps.empty())
- in->flushing_cap_item.remove_myself();
- }
- if (!in->caps_dirty())
- put_inode(in);
- }
- }
-
- m->put();
-}
-
-
-void Client::handle_cap_flushsnap_ack(MetaSession *session, Inode *in, MClientCaps *m)
-{
- mds_rank_t mds = session->mds_num;
- assert(in->caps[mds]);
- snapid_t follows = m->get_snap_follows();
-
- if (in->cap_snaps.count(follows)) {
- CapSnap &capsnap = in->cap_snaps.at(follows);
- if (m->get_client_tid() != capsnap.flush_tid) {
- ldout(cct, 10) << " tid " << m->get_client_tid() << " != " << capsnap.flush_tid << dendl;
- } else {
- ldout(cct, 5) << "handle_cap_flushedsnap mds." << mds << " flushed snap follows " << follows
- << " on " << *in << dendl;
- InodeRef tmp_ref;
- if (in->get_num_ref() == 1)
- tmp_ref = in; // make sure inode not get freed while erasing item from in->cap_snaps
- if (in->flushing_caps == 0 && in->cap_snaps.empty())
- in->flushing_cap_item.remove_myself();
- session->flushing_caps_tids.erase(capsnap.flush_tid);
- in->cap_snaps.erase(follows);
- }
- } else {
- ldout(cct, 5) << "handle_cap_flushedsnap DUP(?) mds." << mds << " flushed snap follows " << follows
- << " on " << *in << dendl;
- // we may not have it if we send multiple FLUSHSNAP requests and (got multiple FLUSHEDSNAPs back)
- }
-
- m->put();
-}
-
-class C_Client_DentryInvalidate : public Context {
-private:
- Client *client;
- vinodeno_t dirino;
- vinodeno_t ino;
- string name;
-public:
- C_Client_DentryInvalidate(Client *c, Dentry *dn, bool del) :
- client(c), name(dn->name) {
- if (client->use_faked_inos()) {
- dirino.ino = dn->dir->parent_inode->faked_ino;
- if (del)
- ino.ino = dn->inode->faked_ino;
- } else {
- dirino = dn->dir->parent_inode->vino();
- if (del)
- ino = dn->inode->vino();
- }
- if (!del)
- ino.ino = inodeno_t();
- }
- void finish(int r) override {
- // _async_dentry_invalidate is responsible for its own locking
- assert(!client->client_lock.is_locked_by_me());
- client->_async_dentry_invalidate(dirino, ino, name);
- }
-};
-
-void Client::_async_dentry_invalidate(vinodeno_t dirino, vinodeno_t ino, string& name)
-{
- if (unmounting)
- return;
- ldout(cct, 10) << "_async_dentry_invalidate '" << name << "' ino " << ino
- << " in dir " << dirino << dendl;
- dentry_invalidate_cb(callback_handle, dirino, ino, name);
-}
-
-void Client::_schedule_invalidate_dentry_callback(Dentry *dn, bool del)
-{
- if (dentry_invalidate_cb && dn->inode->ll_ref > 0)
- async_dentry_invalidator.queue(new C_Client_DentryInvalidate(this, dn, del));
-}
-
-void Client::_try_to_trim_inode(Inode *in, bool sched_inval)
-{
- int ref = in->get_num_ref();
-
- if (in->dir && !in->dir->dentries.empty()) {
- for (auto p = in->dir->dentries.begin();
- p != in->dir->dentries.end(); ) {
- Dentry *dn = p->second;
- ++p;
- /* rmsnap removes whole subtree, need trim inodes recursively.
- * we don't need to invalidate dentries recursively. because
- * invalidating a directory dentry effectively invalidate
- * whole subtree */
- if (in->snapid != CEPH_NOSNAP && dn->inode && dn->inode->is_dir())
- _try_to_trim_inode(dn->inode.get(), false);
-
- if (dn->lru_is_expireable())
- unlink(dn, true, false); // keep dir, drop dentry
- }
- if (in->dir->dentries.empty()) {
- close_dir(in->dir);
- --ref;
- }
- }
-
- if (ref > 0 && (in->flags & I_SNAPDIR_OPEN)) {
- InodeRef snapdir = open_snapdir(in);
- _try_to_trim_inode(snapdir.get(), false);
- --ref;
- }
-
- if (ref > 0 && in->ll_ref > 0 && sched_inval) {
- set<Dentry*>::iterator q = in->dn_set.begin();
- while (q != in->dn_set.end()) {
- Dentry *dn = *q++;
- // FIXME: we play lots of unlink/link tricks when handling MDS replies,
- // so in->dn_set doesn't always reflect the state of kernel's dcache.
- _schedule_invalidate_dentry_callback(dn, true);
- unlink(dn, true, true);
- }
- }
-}
-
-void Client::handle_cap_grant(MetaSession *session, Inode *in, Cap *cap, MClientCaps *m)
-{
- mds_rank_t mds = session->mds_num;
- int used = get_caps_used(in);
- int wanted = in->caps_wanted();
-
- const int old_caps = cap->issued;
- const int new_caps = m->get_caps();
- ldout(cct, 5) << "handle_cap_grant on in " << m->get_ino()
- << " mds." << mds << " seq " << m->get_seq()
- << " caps now " << ccap_string(new_caps)
- << " was " << ccap_string(old_caps) << dendl;
- cap->seq = m->get_seq();
-
- in->layout = m->get_layout();
-
- // update inode
- int implemented = 0;
- int issued = in->caps_issued(&implemented) | in->caps_dirty();
- issued |= implemented;
-
- if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
- in->mode = m->head.mode;
- in->uid = m->head.uid;
- in->gid = m->head.gid;
- in->btime = m->btime;
- }
- bool deleted_inode = false;
- if ((issued & CEPH_CAP_LINK_EXCL) == 0) {
- in->nlink = m->head.nlink;
- if (in->nlink == 0 &&
- (new_caps & (CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL)))
- deleted_inode = true;
- }
- if ((issued & CEPH_CAP_XATTR_EXCL) == 0 &&
- m->xattrbl.length() &&
- m->head.xattr_version > in->xattr_version) {
- bufferlist::iterator p = m->xattrbl.begin();
- ::decode(in->xattrs, p);
- in->xattr_version = m->head.xattr_version;
- }
- update_inode_file_bits(in, m->get_truncate_seq(), m->get_truncate_size(), m->get_size(),
- m->get_change_attr(), m->get_time_warp_seq(), m->get_ctime(),
- m->get_mtime(), m->get_atime(),
- m->inline_version, m->inline_data, issued);
-
- // max_size
- if (cap == in->auth_cap &&
- m->get_max_size() != in->max_size) {
- ldout(cct, 10) << "max_size " << in->max_size << " -> " << m->get_max_size() << dendl;
- in->max_size = m->get_max_size();
- if (in->max_size > in->wanted_max_size) {
- in->wanted_max_size = 0;
- in->requested_max_size = 0;
- }
- }
-
- bool check = false;
- if (m->get_op() == CEPH_CAP_OP_IMPORT && m->get_wanted() != wanted)
- check = true;
-
- check_cap_issue(in, cap, new_caps);
-
- // update caps
- if (old_caps & ~new_caps) {
- ldout(cct, 10) << " revocation of " << ccap_string(~new_caps & old_caps) << dendl;
- cap->issued = new_caps;
- cap->implemented |= new_caps;
-
- if (((used & ~new_caps) & CEPH_CAP_FILE_BUFFER)
- && !_flush(in, new C_Client_FlushComplete(this, in))) {
- // waitin' for flush
- } else if ((old_caps & ~new_caps) & CEPH_CAP_FILE_CACHE) {
- if (_release(in))
- check = true;
- } else {
- cap->wanted = 0; // don't let check_caps skip sending a response to MDS
- check = true;
- }
-
- } else if (old_caps == new_caps) {
- ldout(cct, 10) << " caps unchanged at " << ccap_string(old_caps) << dendl;
- } else {
- ldout(cct, 10) << " grant, new caps are " << ccap_string(new_caps & ~old_caps) << dendl;
- cap->issued = new_caps;
- cap->implemented |= new_caps;
-
- if (cap == in->auth_cap) {
- // non-auth MDS is revoking the newly grant caps ?
- for (map<mds_rank_t, Cap*>::iterator it = in->caps.begin(); it != in->caps.end(); ++it) {
- if (it->second == cap)
- continue;
- if (it->second->implemented & ~it->second->issued & new_caps) {
- check = true;
- break;
- }
- }
- }
- }
-
- if (check)
- check_caps(in, 0);
-
- // wake up waiters
- if (new_caps)
- signal_cond_list(in->waitfor_caps);
-
- // may drop inode's last ref
- if (deleted_inode)
- _try_to_trim_inode(in, true);
-
- m->put();
-}
-
-int Client::_getgrouplist(gid_t** sgids, uid_t uid, gid_t gid)
-{
- // cppcheck-suppress variableScope
- int sgid_count;
- gid_t *sgid_buf;
-
- if (getgroups_cb) {
- sgid_count = getgroups_cb(callback_handle, &sgid_buf);
- if (sgid_count > 0) {
- *sgids = sgid_buf;
- return sgid_count;
- }
- }
-
-#if HAVE_GETGROUPLIST
- struct passwd *pw;
- pw = getpwuid(uid);
- if (pw == NULL) {
- ldout(cct, 3) << "getting user entry failed" << dendl;
- return -errno;
- }
- //use PAM to get the group list
- // initial number of group entries, defaults to posix standard of 16
- // PAM implementations may provide more than 16 groups....
- sgid_count = 16;
- sgid_buf = (gid_t*)malloc(sgid_count * sizeof(gid_t));
- if (sgid_buf == NULL) {
- ldout(cct, 3) << "allocating group memory failed" << dendl;
- return -ENOMEM;
- }
-
- while (1) {
-#if defined(__APPLE__)
- if (getgrouplist(pw->pw_name, gid, (int*)sgid_buf, &sgid_count) == -1) {
-#else
- if (getgrouplist(pw->pw_name, gid, sgid_buf, &sgid_count) == -1) {
-#endif
- // we need to resize the group list and try again
- void *_realloc = NULL;
- if ((_realloc = realloc(sgid_buf, sgid_count * sizeof(gid_t))) == NULL) {
- ldout(cct, 3) << "allocating group memory failed" << dendl;
- free(sgid_buf);
- return -ENOMEM;
- }
- sgid_buf = (gid_t*)_realloc;
- continue;
- }
- // list was successfully retrieved
- break;
- }
- *sgids = sgid_buf;
- return sgid_count;
-#else
- return 0;
-#endif
-}
-
-int Client::inode_permission(Inode *in, const UserPerm& perms, unsigned want)
-{
- if (perms.uid() == 0)
- return 0;
-
- if (perms.uid() != in->uid && (in->mode & S_IRWXG)) {
- int ret = _posix_acl_permission(in, perms, want);
- if (ret != -EAGAIN)
- return ret;
- }
-
- // check permissions before doing anything else
- if (!in->check_mode(perms, want))
- return -EACCES;
- return 0;
-}
-
-int Client::xattr_permission(Inode *in, const char *name, unsigned want,
- const UserPerm& perms)
-{
- int r = _getattr_for_perm(in, perms);
- if (r < 0)
- goto out;
-
- r = 0;
- if (strncmp(name, "system.", 7) == 0) {
- if ((want & MAY_WRITE) && (perms.uid() != 0 && perms.uid() != in->uid))
- r = -EPERM;
- } else {
- r = inode_permission(in, perms, want);
- }
-out:
- ldout(cct, 3) << __func__ << " " << in << " = " << r << dendl;
- return r;
-}
-
-ostream& operator<<(ostream &out, const UserPerm& perm) {
- out << "UserPerm(uid: " << perm.uid() << ", gid: " << perm.gid() << ")";
- return out;
-}
-
-int Client::may_setattr(Inode *in, struct ceph_statx *stx, int mask,
- const UserPerm& perms)
-{
- ldout(cct, 20) << __func__ << " " << *in << "; " << perms << dendl;
- int r = _getattr_for_perm(in, perms);
- if (r < 0)
- goto out;
-
- if (mask & CEPH_SETATTR_SIZE) {
- r = inode_permission(in, perms, MAY_WRITE);
- if (r < 0)
- goto out;
- }
-
- r = -EPERM;
- if (mask & CEPH_SETATTR_UID) {
- if (perms.uid() != 0 && (perms.uid() != in->uid || stx->stx_uid != in->uid))
- goto out;
- }
- if (mask & CEPH_SETATTR_GID) {
- if (perms.uid() != 0 && (perms.uid() != in->uid ||
- (!perms.gid_in_groups(stx->stx_gid) && stx->stx_gid != in->gid)))
- goto out;
- }
-
- if (mask & CEPH_SETATTR_MODE) {
- if (perms.uid() != 0 && perms.uid() != in->uid)
- goto out;
-
- gid_t i_gid = (mask & CEPH_SETATTR_GID) ? stx->stx_gid : in->gid;
- if (perms.uid() != 0 && !perms.gid_in_groups(i_gid))
- stx->stx_mode &= ~S_ISGID;
- }
-
- if (mask & (CEPH_SETATTR_CTIME | CEPH_SETATTR_BTIME |
- CEPH_SETATTR_MTIME | CEPH_SETATTR_ATIME)) {
- if (perms.uid() != 0 && perms.uid() != in->uid) {
- int check_mask = CEPH_SETATTR_CTIME | CEPH_SETATTR_BTIME;
- if (!(mask & CEPH_SETATTR_MTIME_NOW))
- check_mask |= CEPH_SETATTR_MTIME;
- if (!(mask & CEPH_SETATTR_ATIME_NOW))
- check_mask |= CEPH_SETATTR_ATIME;
- if (check_mask & mask) {
- goto out;
- } else {
- r = inode_permission(in, perms, MAY_WRITE);
- if (r < 0)
- goto out;
- }
- }
- }
- r = 0;
-out:
- ldout(cct, 3) << __func__ << " " << in << " = " << r << dendl;
- return r;
-}
-
-int Client::may_open(Inode *in, int flags, const UserPerm& perms)
-{
- ldout(cct, 20) << __func__ << " " << *in << "; " << perms << dendl;
- unsigned want = 0;
-
- if ((flags & O_ACCMODE) == O_WRONLY)
- want = MAY_WRITE;
- else if ((flags & O_ACCMODE) == O_RDWR)
- want = MAY_READ | MAY_WRITE;
- else if ((flags & O_ACCMODE) == O_RDONLY)
- want = MAY_READ;
- if (flags & O_TRUNC)
- want |= MAY_WRITE;
-
- int r = 0;
- switch (in->mode & S_IFMT) {
- case S_IFLNK:
- r = -ELOOP;
- goto out;
- case S_IFDIR:
- if (want & MAY_WRITE) {
- r = -EISDIR;
- goto out;
- }
- break;
- }
-
- r = _getattr_for_perm(in, perms);
- if (r < 0)
- goto out;
-
- r = inode_permission(in, perms, want);
-out:
- ldout(cct, 3) << __func__ << " " << in << " = " << r << dendl;
- return r;
-}
-
-int Client::may_lookup(Inode *dir, const UserPerm& perms)
-{
- ldout(cct, 20) << __func__ << " " << *dir << "; " << perms << dendl;
- int r = _getattr_for_perm(dir, perms);
- if (r < 0)
- goto out;
-
- r = inode_permission(dir, perms, MAY_EXEC);
-out:
- ldout(cct, 3) << __func__ << " " << dir << " = " << r << dendl;
- return r;
-}
-
-int Client::may_create(Inode *dir, const UserPerm& perms)
-{
- ldout(cct, 20) << __func__ << " " << *dir << "; " << perms << dendl;
- int r = _getattr_for_perm(dir, perms);
- if (r < 0)
- goto out;
-
- r = inode_permission(dir, perms, MAY_EXEC | MAY_WRITE);
-out:
- ldout(cct, 3) << __func__ << " " << dir << " = " << r << dendl;
- return r;
-}
-
-int Client::may_delete(Inode *dir, const char *name, const UserPerm& perms)
-{
- ldout(cct, 20) << __func__ << " " << *dir << "; " << "; name " << name << "; " << perms << dendl;
- int r = _getattr_for_perm(dir, perms);
- if (r < 0)
- goto out;
-
- r = inode_permission(dir, perms, MAY_EXEC | MAY_WRITE);
- if (r < 0)
- goto out;
-
- /* 'name == NULL' means rmsnap */
- if (perms.uid() != 0 && name && (dir->mode & S_ISVTX)) {
- InodeRef otherin;
- r = _lookup(dir, name, CEPH_CAP_AUTH_SHARED, &otherin, perms);
- if (r < 0)
- goto out;
- if (dir->uid != perms.uid() && otherin->uid != perms.uid())
- r = -EPERM;
- }
-out:
- ldout(cct, 3) << __func__ << " " << dir << " = " << r << dendl;
- return r;
-}
-
-int Client::may_hardlink(Inode *in, const UserPerm& perms)
-{
- ldout(cct, 20) << __func__ << " " << *in << "; " << perms << dendl;
- int r = _getattr_for_perm(in, perms);
- if (r < 0)
- goto out;
-
- if (perms.uid() == 0 || perms.uid() == in->uid) {
- r = 0;
- goto out;
- }
-
- r = -EPERM;
- if (!S_ISREG(in->mode))
- goto out;
-
- if (in->mode & S_ISUID)
- goto out;
-
- if ((in->mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))
- goto out;
-
- r = inode_permission(in, perms, MAY_READ | MAY_WRITE);
-out:
- ldout(cct, 3) << __func__ << " " << in << " = " << r << dendl;
- return r;
-}
-
-int Client::_getattr_for_perm(Inode *in, const UserPerm& perms)
-{
- int mask = CEPH_STAT_CAP_MODE;
- bool force = false;
- if (acl_type != NO_ACL) {
- mask |= CEPH_STAT_CAP_XATTR;
- force = in->xattr_version == 0;
- }
- return _getattr(in, mask, perms, force);
-}
-
-vinodeno_t Client::_get_vino(Inode *in)
-{
- /* The caller must hold the client lock */
- return vinodeno_t(in->ino, in->snapid);
-}
-
-inodeno_t Client::_get_inodeno(Inode *in)
-{
- /* The caller must hold the client lock */
- return in->ino;
-}
-
-
-/**
- * Resolve an MDS spec to a list of MDS daemon GIDs.
- *
- * The spec is a string representing a GID, rank, filesystem:rank, or name/id.
- * It may be '*' in which case it matches all GIDs.
- *
- * If no error is returned, the `targets` vector will be populated with at least
- * one MDS.
- */
-int Client::resolve_mds(
- const std::string &mds_spec,
- std::vector<mds_gid_t> *targets)
-{
- assert(fsmap);
- assert(targets != nullptr);
-
- mds_role_t role;
- std::stringstream ss;
- int role_r = fsmap->parse_role(mds_spec, &role, ss);
- if (role_r == 0) {
- // We got a role, resolve it to a GID
- ldout(cct, 10) << __func__ << ": resolved '" << mds_spec << "' to role '"
- << role << "'" << dendl;
- targets->push_back(
- fsmap->get_filesystem(role.fscid)->mds_map.get_info(role.rank).global_id);
- return 0;
- }
-
- std::string strtol_err;
- long long rank_or_gid = strict_strtoll(mds_spec.c_str(), 10, &strtol_err);
- if (strtol_err.empty()) {
- // It is a possible GID
- const mds_gid_t mds_gid = mds_gid_t(rank_or_gid);
- if (fsmap->gid_exists(mds_gid)) {
- ldout(cct, 10) << __func__ << ": validated GID " << mds_gid << dendl;
- targets->push_back(mds_gid);
- } else {
- lderr(cct) << __func__ << ": GID " << mds_gid << " not in MDS map"
- << dendl;
- return -ENOENT;
- }
- } else if (mds_spec == "*") {
- // It is a wildcard: use all MDSs
- const auto mds_info = fsmap->get_mds_info();
-
- if (mds_info.empty()) {
- lderr(cct) << __func__ << ": * passed but no MDS daemons found" << dendl;
- return -ENOENT;
- }
-
- for (const auto i : mds_info) {
- targets->push_back(i.first);
- }
- } else {
- // It did not parse as an integer, it is not a wildcard, it must be a name
- const mds_gid_t mds_gid = fsmap->find_mds_gid_by_name(mds_spec);
- if (mds_gid == 0) {
- lderr(cct) << "MDS ID '" << mds_spec << "' not found" << dendl;
-
- lderr(cct) << "FSMap: " << *fsmap << dendl;
-
- return -ENOENT;
- } else {
- ldout(cct, 10) << __func__ << ": resolved ID '" << mds_spec
- << "' to GID " << mds_gid << dendl;
- targets->push_back(mds_gid);
- }
- }
-
- return 0;
-}
-
-
-/**
- * Authenticate with mon and establish global ID
- */
-int Client::authenticate()
-{
- assert(client_lock.is_locked_by_me());
-
- if (monclient->is_authenticated()) {
- return 0;
- }
-
- client_lock.Unlock();
- int r = monclient->authenticate(cct->_conf->client_mount_timeout);
- client_lock.Lock();
- if (r < 0) {
- return r;
- }
-
- whoami = monclient->get_global_id();
- messenger->set_myname(entity_name_t::CLIENT(whoami.v));
-
- return 0;
-}
-
-int Client::fetch_fsmap(bool user)
-{
- int r;
- // Retrieve FSMap to enable looking up daemon addresses. We need FSMap
- // rather than MDSMap because no one MDSMap contains all the daemons, and
- // a `tell` can address any daemon.
- version_t fsmap_latest;
- do {
- C_SaferCond cond;
- monclient->get_version("fsmap", &fsmap_latest, NULL, &cond);
- client_lock.Unlock();
- r = cond.wait();
- client_lock.Lock();
- } while (r == -EAGAIN);
-
- if (r < 0) {
- lderr(cct) << "Failed to learn FSMap version: " << cpp_strerror(r) << dendl;
- return r;
- }
-
- ldout(cct, 10) << __func__ << " learned FSMap version " << fsmap_latest << dendl;
-
- if (user) {
- if (!fsmap_user || fsmap_user->get_epoch() < fsmap_latest) {
- monclient->sub_want("fsmap.user", fsmap_latest, CEPH_SUBSCRIBE_ONETIME);
- monclient->renew_subs();
- wait_on_list(waiting_for_fsmap);
- }
- assert(fsmap_user);
- assert(fsmap_user->get_epoch() >= fsmap_latest);
- } else {
- if (!fsmap || fsmap->get_epoch() < fsmap_latest) {
- monclient->sub_want("fsmap", fsmap_latest, CEPH_SUBSCRIBE_ONETIME);
- monclient->renew_subs();
- wait_on_list(waiting_for_fsmap);
- }
- assert(fsmap);
- assert(fsmap->get_epoch() >= fsmap_latest);
- }
- ldout(cct, 10) << __func__ << " finished waiting for FSMap version "
- << fsmap_latest << dendl;
- return 0;
-}
-
-/**
- *
- * @mds_spec one of ID, rank, GID, "*"
- *
- */
-int Client::mds_command(
- const std::string &mds_spec,
- const vector<string>& cmd,
- const bufferlist& inbl,
- bufferlist *outbl,
- string *outs,
- Context *onfinish)
-{
- Mutex::Locker lock(client_lock);
-
- if (!initialized)
- return -ENOTCONN;
-
- int r;
- r = authenticate();
- if (r < 0) {
- return r;
- }
-
- r = fetch_fsmap(false);
- if (r < 0) {
- return r;
- }
-
- // Look up MDS target(s) of the command
- std::vector<mds_gid_t> targets;
- r = resolve_mds(mds_spec, &targets);
- if (r < 0) {
- return r;
- }
-
- // If daemons are laggy, we won't send them commands. If all
- // are laggy then we fail.
- std::vector<mds_gid_t> non_laggy;
- for (const auto gid : targets) {
- const auto info = fsmap->get_info_gid(gid);
- if (!info.laggy()) {
- non_laggy.push_back(gid);
- }
- }
- if (non_laggy.size() == 0) {
- *outs = "All targeted MDS daemons are laggy";
- return -ENOENT;
- }
-
- if (metadata.empty()) {
- // We are called on an unmounted client, so metadata
- // won't be initialized yet.
- populate_metadata("");
- }
-
- // Send commands to targets
- C_GatherBuilder gather(cct, onfinish);
- for (const auto target_gid : non_laggy) {
- const auto info = fsmap->get_info_gid(target_gid);
-
- // Open a connection to the target MDS
- entity_inst_t inst = info.get_inst();
- ConnectionRef conn = messenger->get_connection(inst);
-
- // Generate MDSCommandOp state
- auto &op = command_table.start_command();
-
- op.on_finish = gather.new_sub();
- op.cmd = cmd;
- op.outbl = outbl;
- op.outs = outs;
- op.inbl = inbl;
- op.mds_gid = target_gid;
- op.con = conn;
-
- ldout(cct, 4) << __func__ << ": new command op to " << target_gid
- << " tid=" << op.tid << cmd << dendl;
-
- // Construct and send MCommand
- MCommand *m = op.get_message(monclient->get_fsid());
- conn->send_message(m);
- }
- gather.activate();
-
- return 0;
-}
-
-void Client::handle_command_reply(MCommandReply *m)
-{
- ceph_tid_t const tid = m->get_tid();
-
- ldout(cct, 10) << __func__ << ": tid=" << m->get_tid() << dendl;
-
- if (!command_table.exists(tid)) {
- ldout(cct, 1) << __func__ << ": unknown tid " << tid << ", dropping" << dendl;
- m->put();
- return;
- }
-
- auto &op = command_table.get_command(tid);
- if (op.outbl) {
- op.outbl->claim(m->get_data());
- }
- if (op.outs) {
- *op.outs = m->rs;
- }
-
- if (op.on_finish) {
- op.on_finish->complete(m->r);
- }
-
- command_table.erase(tid);
-
- m->put();
-}
-
-// -------------------
-// MOUNT
-
-int Client::mount(const std::string &mount_root, const UserPerm& perms,
- bool require_mds)
-{
- Mutex::Locker lock(client_lock);
-
- if (mounted) {
- ldout(cct, 5) << "already mounted" << dendl;
- return 0;
- }
-
- int r = authenticate();
- if (r < 0) {
- lderr(cct) << "authentication failed: " << cpp_strerror(r) << dendl;
- return r;
- }
-
- std::string want = "mdsmap";
- const auto &mds_ns = cct->_conf->client_mds_namespace;
- if (!mds_ns.empty()) {
- r = fetch_fsmap(true);
- if (r < 0)
- return r;
- fs_cluster_id_t cid = fsmap_user->get_fs_cid(mds_ns);
- if (cid == FS_CLUSTER_ID_NONE)
- return -ENOENT;
-
- std::ostringstream oss;
- oss << want << "." << cid;
- want = oss.str();
- }
- ldout(cct, 10) << "Subscribing to map '" << want << "'" << dendl;
-
- monclient->sub_want(want, 0, 0);
- monclient->renew_subs();
-
- tick(); // start tick
-
- if (require_mds) {
- while (1) {
- auto availability = mdsmap->is_cluster_available();
- if (availability == MDSMap::STUCK_UNAVAILABLE) {
- // Error out
- ldout(cct, 10) << "mds cluster unavailable: epoch=" << mdsmap->get_epoch() << dendl;
- return CEPH_FUSE_NO_MDS_UP;
- } else if (availability == MDSMap::AVAILABLE) {
- // Continue to mount
- break;
- } else if (availability == MDSMap::TRANSIENT_UNAVAILABLE) {
- // Else, wait. MDSMonitor will update the map to bring
- // us to a conclusion eventually.
- wait_on_list(waiting_for_mdsmap);
- } else {
- // Unexpected value!
- ceph_abort();
- }
- }
- }
-
- populate_metadata(mount_root.empty() ? "/" : mount_root);
-
- filepath fp(CEPH_INO_ROOT);
- if (!mount_root.empty()) {
- fp = filepath(mount_root.c_str());
- }
- while (true) {
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_GETATTR);
- req->set_filepath(fp);
- req->head.args.getattr.mask = CEPH_STAT_CAP_INODE_ALL;
- int res = make_request(req, perms);
- if (res < 0) {
- if (res == -EACCES && root) {
- ldout(cct, 1) << __func__ << " EACCES on parent of mount point; quotas may not work" << dendl;
- break;
- }
- return res;
- }
-
- if (fp.depth())
- fp.pop_dentry();
- else
- break;
- }
-
- assert(root);
- _ll_get(root);
-
- mounted = true;
-
- // trace?
- if (!cct->_conf->client_trace.empty()) {
- traceout.open(cct->_conf->client_trace.c_str());
- if (traceout.is_open()) {
- ldout(cct, 1) << "opened trace file '" << cct->_conf->client_trace << "'" << dendl;
- } else {
- ldout(cct, 1) << "FAILED to open trace file '" << cct->_conf->client_trace << "'" << dendl;
- }
- }
-
- /*
- ldout(cct, 3) << "op: // client trace data structs" << dendl;
- ldout(cct, 3) << "op: struct stat st;" << dendl;
- ldout(cct, 3) << "op: struct utimbuf utim;" << dendl;
- ldout(cct, 3) << "op: int readlinkbuf_len = 1000;" << dendl;
- ldout(cct, 3) << "op: char readlinkbuf[readlinkbuf_len];" << dendl;
- ldout(cct, 3) << "op: map<string, inode_t*> dir_contents;" << dendl;
- ldout(cct, 3) << "op: map<int, int> open_files;" << dendl;
- ldout(cct, 3) << "op: int fd;" << dendl;
- */
- return 0;
-}
-
-// UNMOUNT
-
-void Client::_close_sessions()
-{
- while (!mds_sessions.empty()) {
- // send session closes!
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p) {
- if (p->second->state != MetaSession::STATE_CLOSING) {
- _close_mds_session(p->second);
- }
- }
-
- // wait for sessions to close
- ldout(cct, 2) << "waiting for " << mds_sessions.size() << " mds sessions to close" << dendl;
- mount_cond.Wait(client_lock);
- }
-}
-
-void Client::flush_mdlog_sync()
-{
- if (mds_requests.empty())
- return;
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p) {
- MetaSession *s = p->second;
- flush_mdlog(s);
- }
-}
-
-void Client::flush_mdlog(MetaSession *session)
-{
- // Only send this to Luminous or newer MDS daemons, older daemons
- // will crash if they see an unknown CEPH_SESSION_* value in this msg.
- const uint64_t features = session->con->get_features();
- if (HAVE_FEATURE(features, SERVER_LUMINOUS)) {
- MClientSession *m = new MClientSession(CEPH_SESSION_REQUEST_FLUSH_MDLOG);
- session->con->send_message(m);
- }
-}
-
-
-void Client::unmount()
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return;
-
- ldout(cct, 2) << "unmounting" << dendl;
- unmounting = true;
-
- flush_mdlog_sync(); // flush the mdlog for pending requests, if any
- while (!mds_requests.empty()) {
- ldout(cct, 10) << "waiting on " << mds_requests.size() << " requests" << dendl;
- mount_cond.Wait(client_lock);
- }
-
- if (tick_event)
- timer.cancel_event(tick_event);
- tick_event = 0;
-
- cwd.reset();
-
- // clean up any unclosed files
- while (!fd_map.empty()) {
- Fh *fh = fd_map.begin()->second;
- fd_map.erase(fd_map.begin());
- ldout(cct, 0) << " destroyed lost open file " << fh << " on " << *fh->inode << dendl;
- _release_fh(fh);
- }
-
- while (!ll_unclosed_fh_set.empty()) {
- set<Fh*>::iterator it = ll_unclosed_fh_set.begin();
- Fh *fh = *it;
- ll_unclosed_fh_set.erase(fh);
- ldout(cct, 0) << " destroyed lost open file " << fh << " on " << *(fh->inode) << dendl;
- _release_fh(fh);
- }
-
- while (!opened_dirs.empty()) {
- dir_result_t *dirp = *opened_dirs.begin();
- ldout(cct, 0) << " destroyed lost open dir " << dirp << " on " << *dirp->inode << dendl;
- _closedir(dirp);
- }
-
- _ll_drop_pins();
-
- if (blacklisted) {
- ldout(cct, 0) << " skipping clean shutdown, we are blacklisted" << dendl;
-
- if (cct->_conf->client_oc) {
- // Purge all cached data so that ObjectCacher doesn't get hung up
- // trying to flush it. ObjectCacher's behaviour on EBLACKLISTED
- // is to just leave things marked dirty
- // (http://tracker.ceph.com/issues/9105)
- for (const auto &i : inode_map) {
- objectcacher->purge_set(&(i.second->oset));
- }
- }
-
- mounted = false;
- return;
- }
-
- while (unsafe_sync_write > 0) {
- ldout(cct, 0) << unsafe_sync_write << " unsafe_sync_writes, waiting" << dendl;
- mount_cond.Wait(client_lock);
- }
-
- if (cct->_conf->client_oc) {
- // flush/release all buffered data
- ceph::unordered_map<vinodeno_t, Inode*>::iterator next;
- for (ceph::unordered_map<vinodeno_t, Inode*>::iterator p = inode_map.begin();
- p != inode_map.end();
- p = next) {
- next = p;
- ++next;
- Inode *in = p->second;
- if (!in) {
- ldout(cct, 0) << "null inode_map entry ino " << p->first << dendl;
- assert(in);
- }
- if (!in->caps.empty()) {
- InodeRef tmp_ref(in);
- _release(in);
- _flush(in, new C_Client_FlushComplete(this, in));
- }
- }
- }
-
- flush_caps_sync();
- wait_sync_caps(last_flush_tid);
-
- // empty lru cache
- trim_cache();
-
- while (lru.lru_get_size() > 0 ||
- !inode_map.empty()) {
- ldout(cct, 2) << "cache still has " << lru.lru_get_size()
- << "+" << inode_map.size() << " items"
- << ", waiting (for caps to release?)"
- << dendl;
- utime_t until = ceph_clock_now() + utime_t(5, 0);
- int r = mount_cond.WaitUntil(client_lock, until);
- if (r == ETIMEDOUT) {
- dump_cache(NULL);
- }
- }
- assert(lru.lru_get_size() == 0);
- assert(inode_map.empty());
-
- // stop tracing
- if (!cct->_conf->client_trace.empty()) {
- ldout(cct, 1) << "closing trace file '" << cct->_conf->client_trace << "'" << dendl;
- traceout.close();
- }
-
- _close_sessions();
-
- mounted = false;
-
- ldout(cct, 2) << "unmounted." << dendl;
-}
-
-void Client::flush_cap_releases()
-{
- // send any cap releases
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p) {
- if (p->second->release && mdsmap->is_clientreplay_or_active_or_stopping(
- p->first)) {
- if (cct->_conf->client_inject_release_failure) {
- ldout(cct, 20) << __func__ << " injecting failure to send cap release message" << dendl;
- p->second->release->put();
- } else {
- p->second->con->send_message(p->second->release);
- }
- p->second->release = 0;
- }
- }
-}
-
-void Client::tick()
-{
- if (cct->_conf->client_debug_inject_tick_delay > 0) {
- sleep(cct->_conf->client_debug_inject_tick_delay);
- assert(0 == cct->_conf->set_val("client_debug_inject_tick_delay", "0"));
- cct->_conf->apply_changes(NULL);
- }
-
- ldout(cct, 21) << "tick" << dendl;
- tick_event = timer.add_event_after(
- cct->_conf->client_tick_interval,
- new FunctionContext([this](int) {
- // Called back via Timer, which takes client_lock for us
- assert(client_lock.is_locked_by_me());
- tick();
- }));
- utime_t now = ceph_clock_now();
-
- if (!mounted && !mds_requests.empty()) {
- MetaRequest *req = mds_requests.begin()->second;
- if (req->op_stamp + cct->_conf->client_mount_timeout < now) {
- req->abort(-ETIMEDOUT);
- if (req->caller_cond) {
- req->kick = true;
- req->caller_cond->Signal();
- }
- signal_cond_list(waiting_for_mdsmap);
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p)
- signal_context_list(p->second->waiting_for_open);
- }
- }
-
- if (mdsmap->get_epoch()) {
- // renew caps?
- utime_t el = now - last_cap_renew;
- if (el > mdsmap->get_session_timeout() / 3.0)
- renew_caps();
-
- flush_cap_releases();
- }
-
- // delayed caps
- xlist<Inode*>::iterator p = delayed_caps.begin();
- while (!p.end()) {
- Inode *in = *p;
- ++p;
- if (in->hold_caps_until > now)
- break;
- delayed_caps.pop_front();
- cap_list.push_back(&in->cap_item);
- check_caps(in, CHECK_CAPS_NODELAY);
- }
-
- trim_cache(true);
-}
-
-void Client::renew_caps()
-{
- ldout(cct, 10) << "renew_caps()" << dendl;
- last_cap_renew = ceph_clock_now();
-
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p) {
- ldout(cct, 15) << "renew_caps requesting from mds." << p->first << dendl;
- if (mdsmap->get_state(p->first) >= MDSMap::STATE_REJOIN)
- renew_caps(p->second);
- }
-}
-
-void Client::renew_caps(MetaSession *session)
-{
- ldout(cct, 10) << "renew_caps mds." << session->mds_num << dendl;
- session->last_cap_renew_request = ceph_clock_now();
- uint64_t seq = ++session->cap_renew_seq;
- session->con->send_message(new MClientSession(CEPH_SESSION_REQUEST_RENEWCAPS, seq));
-}
-
-
-// ===============================================================
-// high level (POSIXy) interface
-
-int Client::_do_lookup(Inode *dir, const string& name, int mask,
- InodeRef *target, const UserPerm& perms)
-{
- int op = dir->snapid == CEPH_SNAPDIR ? CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP;
- MetaRequest *req = new MetaRequest(op);
- filepath path;
- dir->make_nosnap_relative_path(path);
- path.push_dentry(name);
- req->set_filepath(path);
- req->set_inode(dir);
- if (cct->_conf->client_debug_getattr_caps && op == CEPH_MDS_OP_LOOKUP)
- mask |= DEBUG_GETATTR_CAPS;
- req->head.args.getattr.mask = mask;
-
- ldout(cct, 10) << "_do_lookup on " << path << dendl;
-
- int r = make_request(req, perms, target);
- ldout(cct, 10) << "_do_lookup res is " << r << dendl;
- return r;
-}
-
-int Client::_lookup(Inode *dir, const string& dname, int mask, InodeRef *target,
- const UserPerm& perms)
-{
- int r = 0;
- Dentry *dn = NULL;
-
- if (!dir->is_dir()) {
- r = -ENOTDIR;
- goto done;
- }
-
- if (dname == "..") {
- if (dir->dn_set.empty())
- *target = dir;
- else
- *target = dir->get_first_parent()->dir->parent_inode; //dirs can't be hard-linked
- goto done;
- }
-
- if (dname == ".") {
- *target = dir;
- goto done;
- }
-
- if (dname.length() > NAME_MAX) {
- r = -ENAMETOOLONG;
- goto done;
- }
-
- if (dname == cct->_conf->client_snapdir &&
- dir->snapid == CEPH_NOSNAP) {
- *target = open_snapdir(dir);
- goto done;
- }
-
- if (dir->dir &&
- dir->dir->dentries.count(dname)) {
- dn = dir->dir->dentries[dname];
-
- ldout(cct, 20) << "_lookup have dn " << dname << " mds." << dn->lease_mds << " ttl " << dn->lease_ttl
- << " seq " << dn->lease_seq
- << dendl;
-
- if (!dn->inode || dn->inode->caps_issued_mask(mask)) {
- // is dn lease valid?
- utime_t now = ceph_clock_now();
- if (dn->lease_mds >= 0 &&
- dn->lease_ttl > now &&
- mds_sessions.count(dn->lease_mds)) {
- MetaSession *s = mds_sessions[dn->lease_mds];
- if (s->cap_ttl > now &&
- s->cap_gen == dn->lease_gen) {
- // touch this mds's dir cap too, even though we don't _explicitly_ use it here, to
- // make trim_caps() behave.
- dir->try_touch_cap(dn->lease_mds);
- goto hit_dn;
- }
- ldout(cct, 20) << " bad lease, cap_ttl " << s->cap_ttl << ", cap_gen " << s->cap_gen
- << " vs lease_gen " << dn->lease_gen << dendl;
- }
- // dir lease?
- if (dir->caps_issued_mask(CEPH_CAP_FILE_SHARED)) {
- if (dn->cap_shared_gen == dir->shared_gen &&
- (!dn->inode || dn->inode->caps_issued_mask(mask)))
- goto hit_dn;
- if (!dn->inode && (dir->flags & I_COMPLETE)) {
- ldout(cct, 10) << "_lookup concluded ENOENT locally for "
- << *dir << " dn '" << dname << "'" << dendl;
- return -ENOENT;
- }
- }
- } else {
- ldout(cct, 20) << " no cap on " << dn->inode->vino() << dendl;
- }
- } else {
- // can we conclude ENOENT locally?
- if (dir->caps_issued_mask(CEPH_CAP_FILE_SHARED) &&
- (dir->flags & I_COMPLETE)) {
- ldout(cct, 10) << "_lookup concluded ENOENT locally for " << *dir << " dn '" << dname << "'" << dendl;
- return -ENOENT;
- }
- }
-
- r = _do_lookup(dir, dname, mask, target, perms);
- goto done;
-
- hit_dn:
- if (dn->inode) {
- *target = dn->inode;
- } else {
- r = -ENOENT;
- }
- touch_dn(dn);
-
- done:
- if (r < 0)
- ldout(cct, 10) << "_lookup " << *dir << " " << dname << " = " << r << dendl;
- else
- ldout(cct, 10) << "_lookup " << *dir << " " << dname << " = " << **target << dendl;
- return r;
-}
-
-int Client::get_or_create(Inode *dir, const char* name,
- Dentry **pdn, bool expect_null)
-{
- // lookup
- ldout(cct, 20) << "get_or_create " << *dir << " name " << name << dendl;
- dir->open_dir();
- if (dir->dir->dentries.count(name)) {
- Dentry *dn = dir->dir->dentries[name];
-
- // is dn lease valid?
- utime_t now = ceph_clock_now();
- if (dn->inode &&
- dn->lease_mds >= 0 &&
- dn->lease_ttl > now &&
- mds_sessions.count(dn->lease_mds)) {
- MetaSession *s = mds_sessions[dn->lease_mds];
- if (s->cap_ttl > now &&
- s->cap_gen == dn->lease_gen) {
- if (expect_null)
- return -EEXIST;
- }
- }
- *pdn = dn;
- } else {
- // otherwise link up a new one
- *pdn = link(dir->dir, name, NULL, NULL);
- }
-
- // success
- return 0;
-}
-
-int Client::path_walk(const filepath& origpath, InodeRef *end,
- const UserPerm& perms, bool followsym, int mask)
-{
- filepath path = origpath;
- InodeRef cur;
- if (origpath.absolute())
- cur = root;
- else
- cur = cwd;
- assert(cur);
-
- ldout(cct, 10) << "path_walk " << path << dendl;
-
- int symlinks = 0;
-
- unsigned i=0;
- while (i < path.depth() && cur) {
- int caps = 0;
- const string &dname = path[i];
- ldout(cct, 10) << " " << i << " " << *cur << " " << dname << dendl;
- ldout(cct, 20) << " (path is " << path << ")" << dendl;
- InodeRef next;
- if (cct->_conf->client_permissions) {
- int r = may_lookup(cur.get(), perms);
- if (r < 0)
- return r;
- caps = CEPH_CAP_AUTH_SHARED;
- }
-
- /* Get extra requested caps on the last component */
- if (i == (path.depth() - 1))
- caps |= mask;
- int r = _lookup(cur.get(), dname, caps, &next, perms);
- if (r < 0)
- return r;
- // only follow trailing symlink if followsym. always follow
- // 'directory' symlinks.
- if (next && next->is_symlink()) {
- symlinks++;
- ldout(cct, 20) << " symlink count " << symlinks << ", value is '" << next->symlink << "'" << dendl;
- if (symlinks > MAXSYMLINKS) {
- return -ELOOP;
- }
-
- if (i < path.depth() - 1) {
- // dir symlink
- // replace consumed components of path with symlink dir target
- filepath resolved(next->symlink.c_str());
- resolved.append(path.postfixpath(i + 1));
- path = resolved;
- i = 0;
- if (next->symlink[0] == '/') {
- cur = root;
- }
- continue;
- } else if (followsym) {
- if (next->symlink[0] == '/') {
- path = next->symlink.c_str();
- i = 0;
- // reset position
- cur = root;
- } else {
- filepath more(next->symlink.c_str());
- // we need to remove the symlink component from off of the path
- // before adding the target that the symlink points to. remain
- // at the same position in the path.
- path.pop_dentry();
- path.append(more);
- }
- continue;
- }
- }
- cur.swap(next);
- i++;
- }
- if (!cur)
- return -ENOENT;
- if (end)
- end->swap(cur);
- return 0;
-}
-
-
-// namespace ops
-
-int Client::link(const char *relexisting, const char *relpath, const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "link" << std::endl;
- tout(cct) << relexisting << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath existing(relexisting);
-
- InodeRef in, dir;
- int r = path_walk(existing, &in, perm, true);
- if (r < 0)
- return r;
- if (std::string(relpath) == "/") {
- r = -EEXIST;
- return r;
- }
- filepath path(relpath);
- string name = path.last_dentry();
- path.pop_dentry();
-
- r = path_walk(path, &dir, perm, true);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- if (S_ISDIR(in->mode)) {
- r = -EPERM;
- return r;
- }
- r = may_hardlink(in.get(), perm);
- if (r < 0)
- return r;
- r = may_create(dir.get(), perm);
- if (r < 0)
- return r;
- }
- r = _link(in.get(), dir.get(), name.c_str(), perm);
- return r;
-}
-
-int Client::unlink(const char *relpath, const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "unlink" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (std::string(relpath) == "/")
- return -EISDIR;
-
- filepath path(relpath);
- string name = path.last_dentry();
- path.pop_dentry();
- InodeRef dir;
- int r = path_walk(path, &dir, perm);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- r = may_delete(dir.get(), name.c_str(), perm);
- if (r < 0)
- return r;
- }
- return _unlink(dir.get(), name.c_str(), perm);
-}
-
-int Client::rename(const char *relfrom, const char *relto, const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "rename" << std::endl;
- tout(cct) << relfrom << std::endl;
- tout(cct) << relto << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (std::string(relfrom) == "/" || std::string(relto) == "/")
- return -EBUSY;
-
- filepath from(relfrom);
- filepath to(relto);
- string fromname = from.last_dentry();
- from.pop_dentry();
- string toname = to.last_dentry();
- to.pop_dentry();
-
- InodeRef fromdir, todir;
- int r = path_walk(from, &fromdir, perm);
- if (r < 0)
- goto out;
- r = path_walk(to, &todir, perm);
- if (r < 0)
- goto out;
-
- if (cct->_conf->client_permissions) {
- int r = may_delete(fromdir.get(), fromname.c_str(), perm);
- if (r < 0)
- return r;
- r = may_delete(todir.get(), toname.c_str(), perm);
- if (r < 0 && r != -ENOENT)
- return r;
- }
- r = _rename(fromdir.get(), fromname.c_str(), todir.get(), toname.c_str(), perm);
-out:
- return r;
-}
-
-// dirs
-
-int Client::mkdir(const char *relpath, mode_t mode, const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "mkdir" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << mode << std::endl;
- ldout(cct, 10) << "mkdir: " << relpath << dendl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (std::string(relpath) == "/")
- return -EEXIST;
-
- filepath path(relpath);
- string name = path.last_dentry();
- path.pop_dentry();
- InodeRef dir;
- int r = path_walk(path, &dir, perm);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- r = may_create(dir.get(), perm);
- if (r < 0)
- return r;
- }
- return _mkdir(dir.get(), name.c_str(), mode, perm);
-}
-
-int Client::mkdirs(const char *relpath, mode_t mode, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 10) << "Client::mkdirs " << relpath << dendl;
- tout(cct) << "mkdirs" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << mode << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- //get through existing parts of path
- filepath path(relpath);
- unsigned int i;
- int r = 0, caps = 0;
- InodeRef cur, next;
- cur = cwd;
- for (i=0; i<path.depth(); ++i) {
- if (cct->_conf->client_permissions) {
- r = may_lookup(cur.get(), perms);
- if (r < 0)
- break;
- caps = CEPH_CAP_AUTH_SHARED;
- }
- r = _lookup(cur.get(), path[i].c_str(), caps, &next, perms);
- if (r < 0)
- break;
- cur.swap(next);
- }
- //check that we have work left to do
- if (i==path.depth()) return -EEXIST;
- if (r!=-ENOENT) return r;
- ldout(cct, 20) << "mkdirs got through " << i << " directories on path " << relpath << dendl;
- //make new directory at each level
- for (; i<path.depth(); ++i) {
- if (cct->_conf->client_permissions) {
- r = may_create(cur.get(), perms);
- if (r < 0)
- return r;
- }
- //make new dir
- r = _mkdir(cur.get(), path[i].c_str(), mode, perms, &next);
-
- //check proper creation/existence
- if(-EEXIST == r && i < path.depth() - 1) {
- r = _lookup(cur.get(), path[i].c_str(), CEPH_CAP_AUTH_SHARED, &next, perms);
- }
- if (r < 0)
- return r;
- //move to new dir and continue
- cur.swap(next);
- ldout(cct, 20) << "mkdirs: successfully created directory "
- << filepath(cur->ino).get_path() << dendl;
- }
- return 0;
-}
-
-int Client::rmdir(const char *relpath, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "rmdir" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (std::string(relpath) == "/")
- return -EBUSY;
-
- filepath path(relpath);
- string name = path.last_dentry();
- path.pop_dentry();
- InodeRef dir;
- int r = path_walk(path, &dir, perms);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- int r = may_delete(dir.get(), name.c_str(), perms);
- if (r < 0)
- return r;
- }
- return _rmdir(dir.get(), name.c_str(), perms);
-}
-
-int Client::mknod(const char *relpath, mode_t mode, const UserPerm& perms, dev_t rdev)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "mknod" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << mode << std::endl;
- tout(cct) << rdev << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (std::string(relpath) == "/")
- return -EEXIST;
-
- filepath path(relpath);
- string name = path.last_dentry();
- path.pop_dentry();
- InodeRef dir;
- int r = path_walk(path, &dir, perms);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- int r = may_create(dir.get(), perms);
- if (r < 0)
- return r;
- }
- return _mknod(dir.get(), name.c_str(), mode, rdev, perms);
-}
-
-// symlinks
-
-int Client::symlink(const char *target, const char *relpath, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "symlink" << std::endl;
- tout(cct) << target << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (std::string(relpath) == "/")
- return -EEXIST;
-
- filepath path(relpath);
- string name = path.last_dentry();
- path.pop_dentry();
- InodeRef dir;
- int r = path_walk(path, &dir, perms);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- int r = may_create(dir.get(), perms);
- if (r < 0)
- return r;
- }
- return _symlink(dir.get(), name.c_str(), target, perms);
-}
-
-int Client::readlink(const char *relpath, char *buf, loff_t size, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "readlink" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms, false);
- if (r < 0)
- return r;
-
- return _readlink(in.get(), buf, size);
-}
-
-int Client::_readlink(Inode *in, char *buf, size_t size)
-{
- if (!in->is_symlink())
- return -EINVAL;
-
- // copy into buf (at most size bytes)
- int r = in->symlink.length();
- if (r > (int)size)
- r = size;
- memcpy(buf, in->symlink.c_str(), r);
- return r;
-}
-
-
-// inode stuff
-
-int Client::_getattr(Inode *in, int mask, const UserPerm& perms, bool force)
-{
- bool yes = in->caps_issued_mask(mask);
-
- ldout(cct, 10) << "_getattr mask " << ccap_string(mask) << " issued=" << yes << dendl;
- if (yes && !force)
- return 0;
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_GETATTR);
- filepath path;
- in->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->set_inode(in);
- req->head.args.getattr.mask = mask;
-
- int res = make_request(req, perms);
- ldout(cct, 10) << "_getattr result=" << res << dendl;
- return res;
-}
-
-int Client::_do_setattr(Inode *in, struct ceph_statx *stx, int mask,
- const UserPerm& perms, InodeRef *inp)
-{
- int issued = in->caps_issued();
-
- ldout(cct, 10) << "_setattr mask " << mask << " issued " <<
- ccap_string(issued) << dendl;
-
- if (in->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
- if ((mask & CEPH_SETATTR_SIZE) &&
- (unsigned long)stx->stx_size > in->size &&
- is_quota_bytes_exceeded(in, (unsigned long)stx->stx_size - in->size,
- perms)) {
- return -EDQUOT;
- }
-
- // make the change locally?
- if ((in->cap_dirtier_uid >= 0 && perms.uid() != in->cap_dirtier_uid) ||
- (in->cap_dirtier_gid >= 0 && perms.gid() != in->cap_dirtier_gid)) {
- ldout(cct, 10) << __func__ << " caller " << perms.uid() << ":" << perms.gid()
- << " != cap dirtier " << in->cap_dirtier_uid << ":"
- << in->cap_dirtier_gid << ", forcing sync setattr"
- << dendl;
- /*
- * This works because we implicitly flush the caps as part of the
- * request, so the cap update check will happen with the writeback
- * cap context, and then the setattr check will happen with the
- * caller's context.
- *
- * In reality this pattern is likely pretty rare (different users
- * setattr'ing the same file). If that turns out not to be the
- * case later, we can build a more complex pipelined cap writeback
- * infrastructure...
- */
- if (!mask)
- mask |= CEPH_SETATTR_CTIME;
- goto force_request;
- }
-
- if (!mask) {
- // caller just needs us to bump the ctime
- in->ctime = ceph_clock_now();
- in->cap_dirtier_uid = perms.uid();
- in->cap_dirtier_gid = perms.gid();
- if (issued & CEPH_CAP_AUTH_EXCL)
- mark_caps_dirty(in, CEPH_CAP_AUTH_EXCL);
- else if (issued & CEPH_CAP_FILE_EXCL)
- mark_caps_dirty(in, CEPH_CAP_FILE_EXCL);
- else if (issued & CEPH_CAP_XATTR_EXCL)
- mark_caps_dirty(in, CEPH_CAP_XATTR_EXCL);
- else
- mask |= CEPH_SETATTR_CTIME;
- }
-
- if (in->caps_issued_mask(CEPH_CAP_AUTH_EXCL)) {
- bool kill_sguid = mask & (CEPH_SETATTR_SIZE|CEPH_SETATTR_KILL_SGUID);
-
- mask &= ~CEPH_SETATTR_KILL_SGUID;
-
- if (mask & CEPH_SETATTR_UID) {
- in->ctime = ceph_clock_now();
- in->cap_dirtier_uid = perms.uid();
- in->cap_dirtier_gid = perms.gid();
- in->uid = stx->stx_uid;
- mark_caps_dirty(in, CEPH_CAP_AUTH_EXCL);
- mask &= ~CEPH_SETATTR_UID;
- kill_sguid = true;
- ldout(cct,10) << "changing uid to " << stx->stx_uid << dendl;
- }
- if (mask & CEPH_SETATTR_GID) {
- in->ctime = ceph_clock_now();
- in->cap_dirtier_uid = perms.uid();
- in->cap_dirtier_gid = perms.gid();
- in->gid = stx->stx_gid;
- mark_caps_dirty(in, CEPH_CAP_AUTH_EXCL);
- mask &= ~CEPH_SETATTR_GID;
- kill_sguid = true;
- ldout(cct,10) << "changing gid to " << stx->stx_gid << dendl;
- }
-
- if (mask & CEPH_SETATTR_MODE) {
- in->ctime = ceph_clock_now();
- in->cap_dirtier_uid = perms.uid();
- in->cap_dirtier_gid = perms.gid();
- in->mode = (in->mode & ~07777) | (stx->stx_mode & 07777);
- mark_caps_dirty(in, CEPH_CAP_AUTH_EXCL);
- mask &= ~CEPH_SETATTR_MODE;
- ldout(cct,10) << "changing mode to " << stx->stx_mode << dendl;
- } else if (kill_sguid && S_ISREG(in->mode) && (in->mode & (S_IXUSR|S_IXGRP|S_IXOTH))) {
- /* Must squash the any setuid/setgid bits with an ownership change */
- in->mode &= ~(S_ISUID|S_ISGID);
- mark_caps_dirty(in, CEPH_CAP_AUTH_EXCL);
- }
-
- if (mask & CEPH_SETATTR_BTIME) {
- in->ctime = ceph_clock_now();
- in->cap_dirtier_uid = perms.uid();
- in->cap_dirtier_gid = perms.gid();
- in->btime = utime_t(stx->stx_btime);
- mark_caps_dirty(in, CEPH_CAP_AUTH_EXCL);
- mask &= ~CEPH_SETATTR_BTIME;
- ldout(cct,10) << "changing btime to " << in->btime << dendl;
- }
- } else if (mask & CEPH_SETATTR_SIZE) {
- /* If we don't have Ax, then we must ask the server to clear them on truncate */
- mask |= CEPH_SETATTR_KILL_SGUID;
- }
-
- if (in->caps_issued_mask(CEPH_CAP_FILE_EXCL)) {
- if (mask & (CEPH_SETATTR_MTIME|CEPH_SETATTR_ATIME)) {
- if (mask & CEPH_SETATTR_MTIME)
- in->mtime = utime_t(stx->stx_mtime);
- if (mask & CEPH_SETATTR_ATIME)
- in->atime = utime_t(stx->stx_atime);
- in->ctime = ceph_clock_now();
- in->cap_dirtier_uid = perms.uid();
- in->cap_dirtier_gid = perms.gid();
- in->time_warp_seq++;
- mark_caps_dirty(in, CEPH_CAP_FILE_EXCL);
- mask &= ~(CEPH_SETATTR_MTIME|CEPH_SETATTR_ATIME);
- }
- }
- if (!mask) {
- in->change_attr++;
- return 0;
- }
-
-force_request:
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_SETATTR);
-
- filepath path;
-
- in->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->set_inode(in);
-
- if (mask & CEPH_SETATTR_KILL_SGUID) {
- req->inode_drop |= CEPH_CAP_AUTH_SHARED;
- }
- if (mask & CEPH_SETATTR_MODE) {
- req->head.args.setattr.mode = stx->stx_mode;
- req->inode_drop |= CEPH_CAP_AUTH_SHARED;
- ldout(cct,10) << "changing mode to " << stx->stx_mode << dendl;
- }
- if (mask & CEPH_SETATTR_UID) {
- req->head.args.setattr.uid = stx->stx_uid;
- req->inode_drop |= CEPH_CAP_AUTH_SHARED;
- ldout(cct,10) << "changing uid to " << stx->stx_uid << dendl;
- }
- if (mask & CEPH_SETATTR_GID) {
- req->head.args.setattr.gid = stx->stx_gid;
- req->inode_drop |= CEPH_CAP_AUTH_SHARED;
- ldout(cct,10) << "changing gid to " << stx->stx_gid << dendl;
- }
- if (mask & CEPH_SETATTR_BTIME) {
- req->head.args.setattr.btime = utime_t(stx->stx_btime);
- req->inode_drop |= CEPH_CAP_AUTH_SHARED;
- }
- if (mask & CEPH_SETATTR_MTIME) {
- req->head.args.setattr.mtime = utime_t(stx->stx_mtime);
- req->inode_drop |= CEPH_CAP_AUTH_SHARED | CEPH_CAP_FILE_RD |
- CEPH_CAP_FILE_WR;
- }
- if (mask & CEPH_SETATTR_ATIME) {
- req->head.args.setattr.atime = utime_t(stx->stx_atime);
- req->inode_drop |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD |
- CEPH_CAP_FILE_WR;
- }
- if (mask & CEPH_SETATTR_SIZE) {
- if ((unsigned long)stx->stx_size < mdsmap->get_max_filesize()) {
- req->head.args.setattr.size = stx->stx_size;
- ldout(cct,10) << "changing size to " << stx->stx_size << dendl;
- } else { //too big!
- put_request(req);
- ldout(cct,10) << "unable to set size to " << stx->stx_size << ". Too large!" << dendl;
- return -EFBIG;
- }
- req->inode_drop |= CEPH_CAP_AUTH_SHARED | CEPH_CAP_FILE_RD |
- CEPH_CAP_FILE_WR;
- }
- req->head.args.setattr.mask = mask;
-
- req->regetattr_mask = mask;
-
- int res = make_request(req, perms, inp);
- ldout(cct, 10) << "_setattr result=" << res << dendl;
- return res;
-}
-
-/* Note that we only care about attrs that setattr cares about */
-void Client::stat_to_statx(struct stat *st, struct ceph_statx *stx)
-{
- stx->stx_size = st->st_size;
- stx->stx_mode = st->st_mode;
- stx->stx_uid = st->st_uid;
- stx->stx_gid = st->st_gid;
- stx->stx_mtime = st->st_mtim;
- stx->stx_atime = st->st_atim;
-}
-
-int Client::__setattrx(Inode *in, struct ceph_statx *stx, int mask,
- const UserPerm& perms, InodeRef *inp)
-{
- int ret = _do_setattr(in, stx, mask, perms, inp);
- if (ret < 0)
- return ret;
- if (mask & CEPH_SETATTR_MODE)
- ret = _posix_acl_chmod(in, stx->stx_mode, perms);
- return ret;
-}
-
-int Client::_setattrx(InodeRef &in, struct ceph_statx *stx, int mask,
- const UserPerm& perms)
-{
- mask &= (CEPH_SETATTR_MODE | CEPH_SETATTR_UID |
- CEPH_SETATTR_GID | CEPH_SETATTR_MTIME |
- CEPH_SETATTR_ATIME | CEPH_SETATTR_SIZE |
- CEPH_SETATTR_CTIME | CEPH_SETATTR_BTIME);
- if (cct->_conf->client_permissions) {
- int r = may_setattr(in.get(), stx, mask, perms);
- if (r < 0)
- return r;
- }
- return __setattrx(in.get(), stx, mask, perms);
-}
-
-int Client::_setattr(InodeRef &in, struct stat *attr, int mask,
- const UserPerm& perms)
-{
- struct ceph_statx stx;
-
- stat_to_statx(attr, &stx);
- mask &= ~CEPH_SETATTR_BTIME;
-
- if ((mask & CEPH_SETATTR_UID) && attr->st_uid == static_cast<uid_t>(-1)) {
- mask &= ~CEPH_SETATTR_UID;
- }
- if ((mask & CEPH_SETATTR_GID) && attr->st_gid == static_cast<uid_t>(-1)) {
- mask &= ~CEPH_SETATTR_GID;
- }
-
- return _setattrx(in, &stx, mask, perms);
-}
-
-int Client::setattr(const char *relpath, struct stat *attr, int mask,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "setattr" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << mask << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms);
- if (r < 0)
- return r;
- return _setattr(in, attr, mask, perms);
-}
-
-int Client::setattrx(const char *relpath, struct ceph_statx *stx, int mask,
- const UserPerm& perms, int flags)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "setattrx" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << mask << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms, !(flags & AT_SYMLINK_NOFOLLOW));
- if (r < 0)
- return r;
- return _setattrx(in, stx, mask, perms);
-}
-
-int Client::fsetattr(int fd, struct stat *attr, int mask, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fsetattr" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << mask << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- return _setattr(f->inode, attr, mask, perms);
-}
-
-int Client::fsetattrx(int fd, struct ceph_statx *stx, int mask, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fsetattr" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << mask << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- return _setattrx(f->inode, stx, mask, perms);
-}
-
-int Client::stat(const char *relpath, struct stat *stbuf, const UserPerm& perms,
- frag_info_t *dirstat, int mask)
-{
- ldout(cct, 3) << "stat enter (relpath " << relpath << " mask " << mask << ")" << dendl;
- Mutex::Locker lock(client_lock);
- tout(cct) << "stat" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms, true, mask);
- if (r < 0)
- return r;
- r = _getattr(in, mask, perms);
- if (r < 0) {
- ldout(cct, 3) << "stat exit on error!" << dendl;
- return r;
- }
- fill_stat(in, stbuf, dirstat);
- ldout(cct, 3) << "stat exit (relpath " << relpath << " mask " << mask << ")" << dendl;
- return r;
-}
-
-unsigned Client::statx_to_mask(unsigned int flags, unsigned int want)
-{
- unsigned mask = 0;
-
- /* if NO_ATTR_SYNC is set, then we don't need any -- just use what's in cache */
- if (flags & AT_NO_ATTR_SYNC)
- goto out;
-
- /* Always set PIN to distinguish from AT_NO_ATTR_SYNC case */
- mask |= CEPH_CAP_PIN;
- if (want & (CEPH_STATX_MODE|CEPH_STATX_UID|CEPH_STATX_GID|CEPH_STATX_BTIME|CEPH_STATX_CTIME|CEPH_STATX_VERSION))
- mask |= CEPH_CAP_AUTH_SHARED;
- if (want & (CEPH_STATX_NLINK|CEPH_STATX_CTIME|CEPH_STATX_VERSION))
- mask |= CEPH_CAP_LINK_SHARED;
- if (want & (CEPH_STATX_ATIME|CEPH_STATX_MTIME|CEPH_STATX_CTIME|CEPH_STATX_SIZE|CEPH_STATX_BLOCKS|CEPH_STATX_VERSION))
- mask |= CEPH_CAP_FILE_SHARED;
- if (want & (CEPH_STATX_VERSION|CEPH_STATX_CTIME))
- mask |= CEPH_CAP_XATTR_SHARED;
-out:
- return mask;
-}
-
-int Client::statx(const char *relpath, struct ceph_statx *stx,
- const UserPerm& perms,
- unsigned int want, unsigned int flags)
-{
- ldout(cct, 3) << "statx enter (relpath " << relpath << " want " << want << ")" << dendl;
- Mutex::Locker lock(client_lock);
- tout(cct) << "statx" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
-
- unsigned mask = statx_to_mask(flags, want);
-
- int r = path_walk(path, &in, perms, !(flags & AT_SYMLINK_NOFOLLOW), mask);
- if (r < 0)
- return r;
-
- r = _getattr(in, mask, perms);
- if (r < 0) {
- ldout(cct, 3) << "statx exit on error!" << dendl;
- return r;
- }
-
- fill_statx(in, mask, stx);
- ldout(cct, 3) << "statx exit (relpath " << relpath << " mask " << stx->stx_mask << ")" << dendl;
- return r;
-}
-
-int Client::lstat(const char *relpath, struct stat *stbuf,
- const UserPerm& perms, frag_info_t *dirstat, int mask)
-{
- ldout(cct, 3) << "lstat enter (relpath " << relpath << " mask " << mask << ")" << dendl;
- Mutex::Locker lock(client_lock);
- tout(cct) << "lstat" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- // don't follow symlinks
- int r = path_walk(path, &in, perms, false, mask);
- if (r < 0)
- return r;
- r = _getattr(in, mask, perms);
- if (r < 0) {
- ldout(cct, 3) << "lstat exit on error!" << dendl;
- return r;
- }
- fill_stat(in, stbuf, dirstat);
- ldout(cct, 3) << "lstat exit (relpath " << relpath << " mask " << mask << ")" << dendl;
- return r;
-}
-
-int Client::fill_stat(Inode *in, struct stat *st, frag_info_t *dirstat, nest_info_t *rstat)
-{
- ldout(cct, 10) << "fill_stat on " << in->ino << " snap/dev" << in->snapid
- << " mode 0" << oct << in->mode << dec
- << " mtime " << in->mtime << " ctime " << in->ctime << dendl;
- memset(st, 0, sizeof(struct stat));
- if (use_faked_inos())
- st->st_ino = in->faked_ino;
- else
- st->st_ino = in->ino;
- st->st_dev = in->snapid;
- st->st_mode = in->mode;
- st->st_rdev = in->rdev;
- st->st_nlink = in->nlink;
- st->st_uid = in->uid;
- st->st_gid = in->gid;
- if (in->ctime > in->mtime) {
- stat_set_ctime_sec(st, in->ctime.sec());
- stat_set_ctime_nsec(st, in->ctime.nsec());
- } else {
- stat_set_ctime_sec(st, in->mtime.sec());
- stat_set_ctime_nsec(st, in->mtime.nsec());
- }
- stat_set_atime_sec(st, in->atime.sec());
- stat_set_atime_nsec(st, in->atime.nsec());
- stat_set_mtime_sec(st, in->mtime.sec());
- stat_set_mtime_nsec(st, in->mtime.nsec());
- if (in->is_dir()) {
- if (cct->_conf->client_dirsize_rbytes)
- st->st_size = in->rstat.rbytes;
- else
- st->st_size = in->dirstat.size();
- st->st_blocks = 1;
- } else {
- st->st_size = in->size;
- st->st_blocks = (in->size + 511) >> 9;
- }
- st->st_blksize = MAX(in->layout.stripe_unit, 4096);
-
- if (dirstat)
- *dirstat = in->dirstat;
- if (rstat)
- *rstat = in->rstat;
-
- return in->caps_issued();
-}
-
-void Client::fill_statx(Inode *in, unsigned int mask, struct ceph_statx *stx)
-{
- ldout(cct, 10) << "fill_statx on " << in->ino << " snap/dev" << in->snapid
- << " mode 0" << oct << in->mode << dec
- << " mtime " << in->mtime << " ctime " << in->ctime << dendl;
- memset(stx, 0, sizeof(struct ceph_statx));
-
- /*
- * If mask is 0, then the caller set AT_NO_ATTR_SYNC. Reset the mask
- * so that all bits are set.
- */
- if (!mask)
- mask = ~0;
-
- /* These are always considered to be available */
- stx->stx_dev = in->snapid;
- stx->stx_blksize = MAX(in->layout.stripe_unit, 4096);
-
- /* Type bits are always set, even when CEPH_STATX_MODE is not */
- stx->stx_mode = S_IFMT & in->mode;
- stx->stx_ino = use_faked_inos() ? in->faked_ino : (ino_t)in->ino;
- stx->stx_rdev = in->rdev;
- stx->stx_mask |= (CEPH_STATX_INO|CEPH_STATX_RDEV);
-
- if (mask & CEPH_CAP_AUTH_SHARED) {
- stx->stx_uid = in->uid;
- stx->stx_gid = in->gid;
- stx->stx_mode = in->mode;
- in->btime.to_timespec(&stx->stx_btime);
- stx->stx_mask |= (CEPH_STATX_MODE|CEPH_STATX_UID|CEPH_STATX_GID|CEPH_STATX_BTIME);
- }
-
- if (mask & CEPH_CAP_LINK_SHARED) {
- stx->stx_nlink = in->nlink;
- stx->stx_mask |= CEPH_STATX_NLINK;
- }
-
- if (mask & CEPH_CAP_FILE_SHARED) {
-
- in->atime.to_timespec(&stx->stx_atime);
- in->mtime.to_timespec(&stx->stx_mtime);
-
- if (in->is_dir()) {
- if (cct->_conf->client_dirsize_rbytes)
- stx->stx_size = in->rstat.rbytes;
- else
- stx->stx_size = in->dirstat.size();
- stx->stx_blocks = 1;
- } else {
- stx->stx_size = in->size;
- stx->stx_blocks = (in->size + 511) >> 9;
- }
- stx->stx_mask |= (CEPH_STATX_ATIME|CEPH_STATX_MTIME|
- CEPH_STATX_SIZE|CEPH_STATX_BLOCKS);
- }
-
- /* Change time and change_attr both require all shared caps to view */
- if ((mask & CEPH_STAT_CAP_INODE_ALL) == CEPH_STAT_CAP_INODE_ALL) {
- stx->stx_version = in->change_attr;
- if (in->ctime > in->mtime)
- in->ctime.to_timespec(&stx->stx_ctime);
- else
- in->mtime.to_timespec(&stx->stx_ctime);
- stx->stx_mask |= (CEPH_STATX_CTIME|CEPH_STATX_VERSION);
- }
-
-}
-
-void Client::touch_dn(Dentry *dn)
-{
- lru.lru_touch(dn);
-}
-
-int Client::chmod(const char *relpath, mode_t mode, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "chmod" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << mode << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms);
- if (r < 0)
- return r;
- struct stat attr;
- attr.st_mode = mode;
- return _setattr(in, &attr, CEPH_SETATTR_MODE, perms);
-}
-
-int Client::fchmod(int fd, mode_t mode, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fchmod" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << mode << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- struct stat attr;
- attr.st_mode = mode;
- return _setattr(f->inode, &attr, CEPH_SETATTR_MODE, perms);
-}
-
-int Client::lchmod(const char *relpath, mode_t mode, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "lchmod" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << mode << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- // don't follow symlinks
- int r = path_walk(path, &in, perms, false);
- if (r < 0)
- return r;
- struct stat attr;
- attr.st_mode = mode;
- return _setattr(in, &attr, CEPH_SETATTR_MODE, perms);
-}
-
-int Client::chown(const char *relpath, uid_t new_uid, gid_t new_gid,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "chown" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << new_uid << std::endl;
- tout(cct) << new_gid << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms);
- if (r < 0)
- return r;
- struct stat attr;
- attr.st_uid = new_uid;
- attr.st_gid = new_gid;
- return _setattr(in, &attr, CEPH_SETATTR_UID|CEPH_SETATTR_GID, perms);
-}
-
-int Client::fchown(int fd, uid_t new_uid, gid_t new_gid, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fchown" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << new_uid << std::endl;
- tout(cct) << new_gid << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- struct stat attr;
- attr.st_uid = new_uid;
- attr.st_gid = new_gid;
- int mask = 0;
- if (new_uid != static_cast<uid_t>(-1)) mask |= CEPH_SETATTR_UID;
- if (new_gid != static_cast<gid_t>(-1)) mask |= CEPH_SETATTR_GID;
- return _setattr(f->inode, &attr, mask, perms);
-}
-
-int Client::lchown(const char *relpath, uid_t new_uid, gid_t new_gid,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "lchown" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << new_uid << std::endl;
- tout(cct) << new_gid << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- // don't follow symlinks
- int r = path_walk(path, &in, perms, false);
- if (r < 0)
- return r;
- struct stat attr;
- attr.st_uid = new_uid;
- attr.st_gid = new_gid;
- int mask = 0;
- if (new_uid != static_cast<uid_t>(-1)) mask |= CEPH_SETATTR_UID;
- if (new_gid != static_cast<gid_t>(-1)) mask |= CEPH_SETATTR_GID;
- return _setattr(in, &attr, mask, perms);
-}
-
-int Client::utime(const char *relpath, struct utimbuf *buf,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "utime" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << buf->modtime << std::endl;
- tout(cct) << buf->actime << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms);
- if (r < 0)
- return r;
- struct stat attr;
- stat_set_mtime_sec(&attr, buf->modtime);
- stat_set_mtime_nsec(&attr, 0);
- stat_set_atime_sec(&attr, buf->actime);
- stat_set_atime_nsec(&attr, 0);
- return _setattr(in, &attr, CEPH_SETATTR_MTIME|CEPH_SETATTR_ATIME, perms);
-}
-
-int Client::lutime(const char *relpath, struct utimbuf *buf,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "lutime" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << buf->modtime << std::endl;
- tout(cct) << buf->actime << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- // don't follow symlinks
- int r = path_walk(path, &in, perms, false);
- if (r < 0)
- return r;
- struct stat attr;
- stat_set_mtime_sec(&attr, buf->modtime);
- stat_set_mtime_nsec(&attr, 0);
- stat_set_atime_sec(&attr, buf->actime);
- stat_set_atime_nsec(&attr, 0);
- return _setattr(in, &attr, CEPH_SETATTR_MTIME|CEPH_SETATTR_ATIME, perms);
-}
-
-int Client::flock(int fd, int operation, uint64_t owner)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "flock" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << operation << std::endl;
- tout(cct) << owner << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-
- return _flock(f, operation, owner);
-}
-
-int Client::opendir(const char *relpath, dir_result_t **dirpp, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "opendir" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms, true);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- int r = may_open(in.get(), O_RDONLY, perms);
- if (r < 0)
- return r;
- }
- r = _opendir(in.get(), dirpp, perms);
- /* if ENOTDIR, dirpp will be an uninitialized point and it's very dangerous to access its value */
- if (r != -ENOTDIR)
- tout(cct) << (unsigned long)*dirpp << std::endl;
- return r;
-}
-
-int Client::_opendir(Inode *in, dir_result_t **dirpp, const UserPerm& perms)
-{
- if (!in->is_dir())
- return -ENOTDIR;
- *dirpp = new dir_result_t(in, perms);
- opened_dirs.insert(*dirpp);
- ldout(cct, 3) << "_opendir(" << in->ino << ") = " << 0 << " (" << *dirpp << ")" << dendl;
- return 0;
-}
-
-
-int Client::closedir(dir_result_t *dir)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "closedir" << std::endl;
- tout(cct) << (unsigned long)dir << std::endl;
-
- ldout(cct, 3) << "closedir(" << dir << ") = 0" << dendl;
- _closedir(dir);
- return 0;
-}
-
-void Client::_closedir(dir_result_t *dirp)
-{
- ldout(cct, 10) << "_closedir(" << dirp << ")" << dendl;
- if (dirp->inode) {
- ldout(cct, 10) << "_closedir detaching inode " << dirp->inode << dendl;
- dirp->inode.reset();
- }
- _readdir_drop_dirp_buffer(dirp);
- opened_dirs.erase(dirp);
- delete dirp;
-}
-
-void Client::rewinddir(dir_result_t *dirp)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "rewinddir(" << dirp << ")" << dendl;
-
- if (unmounting)
- return;
-
- dir_result_t *d = static_cast<dir_result_t*>(dirp);
- _readdir_drop_dirp_buffer(d);
- d->reset();
-}
-
-loff_t Client::telldir(dir_result_t *dirp)
-{
- dir_result_t *d = static_cast<dir_result_t*>(dirp);
- ldout(cct, 3) << "telldir(" << dirp << ") = " << d->offset << dendl;
- return d->offset;
-}
-
-void Client::seekdir(dir_result_t *dirp, loff_t offset)
-{
- Mutex::Locker lock(client_lock);
-
- ldout(cct, 3) << "seekdir(" << dirp << ", " << offset << ")" << dendl;
-
- if (unmounting)
- return;
-
- if (offset == dirp->offset)
- return;
-
- if (offset > dirp->offset)
- dirp->release_count = 0; // bump if we do a forward seek
- else
- dirp->ordered_count = 0; // disable filling readdir cache
-
- if (dirp->hash_order()) {
- if (dirp->offset > offset) {
- _readdir_drop_dirp_buffer(dirp);
- dirp->reset();
- }
- } else {
- if (offset == 0 ||
- dirp->buffer_frag != frag_t(dir_result_t::fpos_high(offset)) ||
- dirp->offset_low() > dir_result_t::fpos_low(offset)) {
- _readdir_drop_dirp_buffer(dirp);
- dirp->reset();
- }
- }
-
- dirp->offset = offset;
-}
-
-
-//struct dirent {
-// ino_t d_ino; /* inode number */
-// off_t d_off; /* offset to the next dirent */
-// unsigned short d_reclen; /* length of this record */
-// unsigned char d_type; /* type of file */
-// char d_name[256]; /* filename */
-//};
-void Client::fill_dirent(struct dirent *de, const char *name, int type, uint64_t ino, loff_t next_off)
-{
- strncpy(de->d_name, name, 255);
- de->d_name[255] = '\0';
-#ifndef __CYGWIN__
- de->d_ino = ino;
-#if !defined(DARWIN) && !defined(__FreeBSD__)
- de->d_off = next_off;
-#endif
- de->d_reclen = 1;
- de->d_type = IFTODT(type);
- ldout(cct, 10) << "fill_dirent '" << de->d_name << "' -> " << inodeno_t(de->d_ino)
- << " type " << (int)de->d_type << " w/ next_off " << hex << next_off << dec << dendl;
-#endif
-}
-
-void Client::_readdir_next_frag(dir_result_t *dirp)
-{
- frag_t fg = dirp->buffer_frag;
-
- if (fg.is_rightmost()) {
- ldout(cct, 10) << "_readdir_next_frag advance from " << fg << " to END" << dendl;
- dirp->set_end();
- return;
- }
-
- // advance
- fg = fg.next();
- ldout(cct, 10) << "_readdir_next_frag advance from " << dirp->buffer_frag << " to " << fg << dendl;
-
- if (dirp->hash_order()) {
- // keep last_name
- int64_t new_offset = dir_result_t::make_fpos(fg.value(), 2, true);
- if (dirp->offset < new_offset) // don't decrease offset
- dirp->offset = new_offset;
- } else {
- dirp->last_name.clear();
- dirp->offset = dir_result_t::make_fpos(fg, 2, false);
- _readdir_rechoose_frag(dirp);
- }
-}
-
-void Client::_readdir_rechoose_frag(dir_result_t *dirp)
-{
- assert(dirp->inode);
-
- if (dirp->hash_order())
- return;
-
- frag_t cur = frag_t(dirp->offset_high());
- frag_t fg = dirp->inode->dirfragtree[cur.value()];
- if (fg != cur) {
- ldout(cct, 10) << "_readdir_rechoose_frag frag " << cur << " maps to " << fg << dendl;
- dirp->offset = dir_result_t::make_fpos(fg, 2, false);
- dirp->last_name.clear();
- dirp->next_offset = 2;
- }
-}
-
-void Client::_readdir_drop_dirp_buffer(dir_result_t *dirp)
-{
- ldout(cct, 10) << "_readdir_drop_dirp_buffer " << dirp << dendl;
- dirp->buffer.clear();
-}
-
-int Client::_readdir_get_frag(dir_result_t *dirp)
-{
- assert(dirp);
- assert(dirp->inode);
-
- // get the current frag.
- frag_t fg;
- if (dirp->hash_order())
- fg = dirp->inode->dirfragtree[dirp->offset_high()];
- else
- fg = frag_t(dirp->offset_high());
-
- ldout(cct, 10) << "_readdir_get_frag " << dirp << " on " << dirp->inode->ino << " fg " << fg
- << " offset " << hex << dirp->offset << dec << dendl;
-
- int op = CEPH_MDS_OP_READDIR;
- if (dirp->inode && dirp->inode->snapid == CEPH_SNAPDIR)
- op = CEPH_MDS_OP_LSSNAP;
-
- InodeRef& diri = dirp->inode;
-
- MetaRequest *req = new MetaRequest(op);
- filepath path;
- diri->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->set_inode(diri.get());
- req->head.args.readdir.frag = fg;
- req->head.args.readdir.flags = CEPH_READDIR_REPLY_BITFLAGS;
- if (dirp->last_name.length()) {
- req->path2.set_path(dirp->last_name.c_str());
- } else if (dirp->hash_order()) {
- req->head.args.readdir.offset_hash = dirp->offset_high();
- }
- req->dirp = dirp;
-
- bufferlist dirbl;
- int res = make_request(req, dirp->perms, NULL, NULL, -1, &dirbl);
-
- if (res == -EAGAIN) {
- ldout(cct, 10) << "_readdir_get_frag got EAGAIN, retrying" << dendl;
- _readdir_rechoose_frag(dirp);
- return _readdir_get_frag(dirp);
- }
-
- if (res == 0) {
- ldout(cct, 10) << "_readdir_get_frag " << dirp << " got frag " << dirp->buffer_frag
- << " size " << dirp->buffer.size() << dendl;
- } else {
- ldout(cct, 10) << "_readdir_get_frag got error " << res << ", setting end flag" << dendl;
- dirp->set_end();
- }
-
- return res;
-}
-
-struct dentry_off_lt {
- bool operator()(const Dentry* dn, int64_t off) const {
- return dir_result_t::fpos_cmp(dn->offset, off) < 0;
- }
-};
-
-int Client::_readdir_cache_cb(dir_result_t *dirp, add_dirent_cb_t cb, void *p,
- int caps, bool getref)
-{
- assert(client_lock.is_locked());
- ldout(cct, 10) << "_readdir_cache_cb " << dirp << " on " << dirp->inode->ino
- << " last_name " << dirp->last_name << " offset " << hex << dirp->offset << dec
- << dendl;
- Dir *dir = dirp->inode->dir;
-
- if (!dir) {
- ldout(cct, 10) << " dir is empty" << dendl;
- dirp->set_end();
- return 0;
- }
-
- vector<Dentry*>::iterator pd = std::lower_bound(dir->readdir_cache.begin(),
- dir->readdir_cache.end(),
- dirp->offset, dentry_off_lt());
-
- string dn_name;
- while (true) {
- if (!dirp->inode->is_complete_and_ordered())
- return -EAGAIN;
- if (pd == dir->readdir_cache.end())
- break;
- Dentry *dn = *pd;
- if (dn->inode == NULL) {
- ldout(cct, 15) << " skipping null '" << dn->name << "'" << dendl;
- ++pd;
- continue;
- }
- if (dn->cap_shared_gen != dir->parent_inode->shared_gen) {
- ldout(cct, 15) << " skipping mismatch shared gen '" << dn->name << "'" << dendl;
- ++pd;
- continue;
- }
-
- int r = _getattr(dn->inode, caps, dirp->perms);
- if (r < 0)
- return r;
-
- struct ceph_statx stx;
- struct dirent de;
- fill_statx(dn->inode, caps, &stx);
-
- uint64_t next_off = dn->offset + 1;
- ++pd;
- if (pd == dir->readdir_cache.end())
- next_off = dir_result_t::END;
-
- Inode *in = NULL;
- fill_dirent(&de, dn->name.c_str(), stx.stx_mode, stx.stx_ino, next_off);
- if (getref) {
- in = dn->inode.get();
- _ll_get(in);
- }
-
- dn_name = dn->name; // fill in name while we have lock
-
- client_lock.Unlock();
- r = cb(p, &de, &stx, next_off, in); // _next_ offset
- client_lock.Lock();
- ldout(cct, 15) << " de " << de.d_name << " off " << hex << dn->offset << dec
- << " = " << r << dendl;
- if (r < 0) {
- return r;
- }
-
- dirp->offset = next_off;
- if (dirp->at_end())
- dirp->next_offset = 2;
- else
- dirp->next_offset = dirp->offset_low();
- dirp->last_name = dn_name; // we successfully returned this one; update!
- if (r > 0)
- return r;
- }
-
- ldout(cct, 10) << "_readdir_cache_cb " << dirp << " on " << dirp->inode->ino << " at end" << dendl;
- dirp->set_end();
- return 0;
-}
-
-int Client::readdir_r_cb(dir_result_t *d, add_dirent_cb_t cb, void *p,
- unsigned want, unsigned flags, bool getref)
-{
- int caps = statx_to_mask(flags, want);
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- dir_result_t *dirp = static_cast<dir_result_t*>(d);
-
- ldout(cct, 10) << "readdir_r_cb " << *dirp->inode << " offset " << hex << dirp->offset
- << dec << " at_end=" << dirp->at_end()
- << " hash_order=" << dirp->hash_order() << dendl;
-
- struct dirent de;
- struct ceph_statx stx;
- memset(&de, 0, sizeof(de));
- memset(&stx, 0, sizeof(stx));
-
- InodeRef& diri = dirp->inode;
-
- if (dirp->at_end())
- return 0;
-
- if (dirp->offset == 0) {
- ldout(cct, 15) << " including ." << dendl;
- assert(diri->dn_set.size() < 2); // can't have multiple hard-links to a dir
- uint64_t next_off = 1;
-
- int r;
- r = _getattr(diri, caps, dirp->perms);
- if (r < 0)
- return r;
-
- fill_statx(diri, caps, &stx);
- fill_dirent(&de, ".", S_IFDIR, stx.stx_ino, next_off);
-
- Inode *inode = NULL;
- if (getref) {
- inode = diri.get();
- _ll_get(inode);
- }
-
- client_lock.Unlock();
- r = cb(p, &de, &stx, next_off, inode);
- client_lock.Lock();
- if (r < 0)
- return r;
-
- dirp->offset = next_off;
- if (r > 0)
- return r;
- }
- if (dirp->offset == 1) {
- ldout(cct, 15) << " including .." << dendl;
- uint64_t next_off = 2;
- InodeRef in;
- if (diri->dn_set.empty())
- in = diri;
- else
- in = diri->get_first_parent()->inode;
-
- int r;
- r = _getattr(diri, caps, dirp->perms);
- if (r < 0)
- return r;
-
- fill_statx(in, caps, &stx);
- fill_dirent(&de, "..", S_IFDIR, stx.stx_ino, next_off);
-
- Inode *inode = NULL;
- if (getref) {
- inode = in.get();
- _ll_get(inode);
- }
-
- client_lock.Unlock();
- r = cb(p, &de, &stx, next_off, inode);
- client_lock.Lock();
- if (r < 0)
- return r;
-
- dirp->offset = next_off;
- if (r > 0)
- return r;
- }
-
- // can we read from our cache?
- ldout(cct, 10) << "offset " << hex << dirp->offset << dec
- << " snapid " << dirp->inode->snapid << " (complete && ordered) "
- << dirp->inode->is_complete_and_ordered()
- << " issued " << ccap_string(dirp->inode->caps_issued())
- << dendl;
- if (dirp->inode->snapid != CEPH_SNAPDIR &&
- dirp->inode->is_complete_and_ordered() &&
- dirp->inode->caps_issued_mask(CEPH_CAP_FILE_SHARED)) {
- int err = _readdir_cache_cb(dirp, cb, p, caps, getref);
- if (err != -EAGAIN)
- return err;
- }
-
- while (1) {
- if (dirp->at_end())
- return 0;
-
- bool check_caps = true;
- if (!dirp->is_cached()) {
- int r = _readdir_get_frag(dirp);
- if (r)
- return r;
- // _readdir_get_frag () may updates dirp->offset if the replied dirfrag is
- // different than the requested one. (our dirfragtree was outdated)
- check_caps = false;
- }
- frag_t fg = dirp->buffer_frag;
-
- ldout(cct, 10) << "frag " << fg << " buffer size " << dirp->buffer.size()
- << " offset " << hex << dirp->offset << dendl;
-
- for (auto it = std::lower_bound(dirp->buffer.begin(), dirp->buffer.end(),
- dirp->offset, dir_result_t::dentry_off_lt());
- it != dirp->buffer.end();
- ++it) {
- dir_result_t::dentry &entry = *it;
-
- uint64_t next_off = entry.offset + 1;
-
- int r;
- if (check_caps) {
- r = _getattr(entry.inode, caps, dirp->perms);
- if (r < 0)
- return r;
- }
-
- fill_statx(entry.inode, caps, &stx);
- fill_dirent(&de, entry.name.c_str(), stx.stx_mode, stx.stx_ino, next_off);
-
- Inode *inode = NULL;
- if (getref) {
- inode = entry.inode.get();
- _ll_get(inode);
- }
-
- client_lock.Unlock();
- r = cb(p, &de, &stx, next_off, inode); // _next_ offset
- client_lock.Lock();
-
- ldout(cct, 15) << " de " << de.d_name << " off " << hex << next_off - 1 << dec
- << " = " << r << dendl;
- if (r < 0)
- return r;
-
- dirp->offset = next_off;
- if (r > 0)
- return r;
- }
-
- if (dirp->next_offset > 2) {
- ldout(cct, 10) << " fetching next chunk of this frag" << dendl;
- _readdir_drop_dirp_buffer(dirp);
- continue; // more!
- }
-
- if (!fg.is_rightmost()) {
- // next frag!
- _readdir_next_frag(dirp);
- continue;
- }
-
- if (diri->shared_gen == dirp->start_shared_gen &&
- diri->dir_release_count == dirp->release_count) {
- if (diri->dir_ordered_count == dirp->ordered_count) {
- ldout(cct, 10) << " marking (I_COMPLETE|I_DIR_ORDERED) on " << *diri << dendl;
- if (diri->dir) {
- assert(diri->dir->readdir_cache.size() >= dirp->cache_index);
- diri->dir->readdir_cache.resize(dirp->cache_index);
- }
- diri->flags |= I_COMPLETE | I_DIR_ORDERED;
- } else {
- ldout(cct, 10) << " marking I_COMPLETE on " << *diri << dendl;
- diri->flags |= I_COMPLETE;
- }
- }
-
- dirp->set_end();
- return 0;
- }
- ceph_abort();
- return 0;
-}
-
-
-int Client::readdir_r(dir_result_t *d, struct dirent *de)
-{
- return readdirplus_r(d, de, 0, 0, 0, NULL);
-}
-
-/*
- * readdirplus_r
- *
- * returns
- * 1 if we got a dirent
- * 0 for end of directory
- * <0 on error
- */
-
-struct single_readdir {
- struct dirent *de;
- struct ceph_statx *stx;
- Inode *inode;
- bool full;
-};
-
-static int _readdir_single_dirent_cb(void *p, struct dirent *de,
- struct ceph_statx *stx, off_t off,
- Inode *in)
-{
- single_readdir *c = static_cast<single_readdir *>(p);
-
- if (c->full)
- return -1; // already filled this dirent
-
- *c->de = *de;
- if (c->stx)
- *c->stx = *stx;
- c->inode = in;
- c->full = true;
- return 1;
-}
-
-struct dirent *Client::readdir(dir_result_t *d)
-{
- int ret;
- static struct dirent de;
- single_readdir sr;
- sr.de = &de;
- sr.stx = NULL;
- sr.inode = NULL;
- sr.full = false;
-
- // our callback fills the dirent and sets sr.full=true on first
- // call, and returns -1 the second time around.
- ret = readdir_r_cb(d, _readdir_single_dirent_cb, (void *)&sr);
- if (ret < -1) {
- errno = -ret; // this sucks.
- return (dirent *) NULL;
- }
- if (sr.full) {
- return &de;
- }
- return (dirent *) NULL;
-}
-
-int Client::readdirplus_r(dir_result_t *d, struct dirent *de,
- struct ceph_statx *stx, unsigned want,
- unsigned flags, Inode **out)
-{
- single_readdir sr;
- sr.de = de;
- sr.stx = stx;
- sr.inode = NULL;
- sr.full = false;
-
- // our callback fills the dirent and sets sr.full=true on first
- // call, and returns -1 the second time around.
- int r = readdir_r_cb(d, _readdir_single_dirent_cb, (void *)&sr, want, flags, out);
- if (r < -1)
- return r;
- if (out)
- *out = sr.inode;
- if (sr.full)
- return 1;
- return 0;
-}
-
-
-/* getdents */
-struct getdents_result {
- char *buf;
- int buflen;
- int pos;
- bool fullent;
-};
-
-static int _readdir_getdent_cb(void *p, struct dirent *de,
- struct ceph_statx *stx, off_t off, Inode *in)
-{
- struct getdents_result *c = static_cast<getdents_result *>(p);
-
- int dlen;
- if (c->fullent)
- dlen = sizeof(*de);
- else
- dlen = strlen(de->d_name) + 1;
-
- if (c->pos + dlen > c->buflen)
- return -1; // doesn't fit
-
- if (c->fullent) {
- memcpy(c->buf + c->pos, de, sizeof(*de));
- } else {
- memcpy(c->buf + c->pos, de->d_name, dlen);
- }
- c->pos += dlen;
- return 0;
-}
-
-int Client::_getdents(dir_result_t *dir, char *buf, int buflen, bool fullent)
-{
- getdents_result gr;
- gr.buf = buf;
- gr.buflen = buflen;
- gr.fullent = fullent;
- gr.pos = 0;
-
- int r = readdir_r_cb(dir, _readdir_getdent_cb, (void *)&gr);
-
- if (r < 0) { // some error
- if (r == -1) { // buffer ran out of space
- if (gr.pos) { // but we got some entries already!
- return gr.pos;
- } // or we need a larger buffer
- return -ERANGE;
- } else { // actual error, return it
- return r;
- }
- }
- return gr.pos;
-}
-
-
-/* getdir */
-struct getdir_result {
- list<string> *contents;
- int num;
-};
-
-static int _getdir_cb(void *p, struct dirent *de, struct ceph_statx *stx, off_t off, Inode *in)
-{
- getdir_result *r = static_cast<getdir_result *>(p);
-
- r->contents->push_back(de->d_name);
- r->num++;
- return 0;
-}
-
-int Client::getdir(const char *relpath, list<string>& contents,
- const UserPerm& perms)
-{
- ldout(cct, 3) << "getdir(" << relpath << ")" << dendl;
- {
- Mutex::Locker lock(client_lock);
- tout(cct) << "getdir" << std::endl;
- tout(cct) << relpath << std::endl;
- }
-
- dir_result_t *d;
- int r = opendir(relpath, &d, perms);
- if (r < 0)
- return r;
-
- getdir_result gr;
- gr.contents = &contents;
- gr.num = 0;
- r = readdir_r_cb(d, _getdir_cb, (void *)&gr);
-
- closedir(d);
-
- if (r < 0)
- return r;
- return gr.num;
-}
-
-
-/****** file i/o **********/
-int Client::open(const char *relpath, int flags, const UserPerm& perms,
- mode_t mode, int stripe_unit, int stripe_count,
- int object_size, const char *data_pool)
-{
- ldout(cct, 3) << "open enter(" << relpath << ", " << ceph_flags_sys2wire(flags) << "," << mode << ")" << dendl;
- Mutex::Locker lock(client_lock);
- tout(cct) << "open" << std::endl;
- tout(cct) << relpath << std::endl;
- tout(cct) << ceph_flags_sys2wire(flags) << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *fh = NULL;
-
-#if defined(__linux__) && defined(O_PATH)
- /* When the O_PATH is being specified, others flags than O_DIRECTORY
- * and O_NOFOLLOW are ignored. Please refer do_entry_open() function
- * in kernel (fs/open.c). */
- if (flags & O_PATH)
- flags &= O_DIRECTORY | O_NOFOLLOW | O_PATH;
-#endif
-
- filepath path(relpath);
- InodeRef in;
- bool created = false;
- /* O_CREATE with O_EXCL enforces O_NOFOLLOW. */
- bool followsym = !((flags & O_NOFOLLOW) || ((flags & O_CREAT) && (flags & O_EXCL)));
- int r = path_walk(path, &in, perms, followsym, ceph_caps_for_mode(mode));
-
- if (r == 0 && (flags & O_CREAT) && (flags & O_EXCL))
- return -EEXIST;
-
-#if defined(__linux__) && defined(O_PATH)
- if (r == 0 && in->is_symlink() && (flags & O_NOFOLLOW) && !(flags & O_PATH))
-#else
- if (r == 0 && in->is_symlink() && (flags & O_NOFOLLOW))
-#endif
- return -ELOOP;
-
- if (r == -ENOENT && (flags & O_CREAT)) {
- filepath dirpath = path;
- string dname = dirpath.last_dentry();
- dirpath.pop_dentry();
- InodeRef dir;
- r = path_walk(dirpath, &dir, perms, true,
- cct->_conf->client_permissions ? CEPH_CAP_AUTH_SHARED : 0);
- if (r < 0)
- goto out;
- if (cct->_conf->client_permissions) {
- r = may_create(dir.get(), perms);
- if (r < 0)
- goto out;
- }
- r = _create(dir.get(), dname.c_str(), flags, mode, &in, &fh, stripe_unit,
- stripe_count, object_size, data_pool, &created, perms);
- }
- if (r < 0)
- goto out;
-
- if (!created) {
- // posix says we can only check permissions of existing files
- if (cct->_conf->client_permissions) {
- r = may_open(in.get(), flags, perms);
- if (r < 0)
- goto out;
- }
- }
-
- if (!fh)
- r = _open(in.get(), flags, mode, &fh, perms);
- if (r >= 0) {
- // allocate a integer file descriptor
- assert(fh);
- r = get_fd();
- assert(fd_map.count(r) == 0);
- fd_map[r] = fh;
- }
-
- out:
- tout(cct) << r << std::endl;
- ldout(cct, 3) << "open exit(" << path << ", " << ceph_flags_sys2wire(flags) << ") = " << r << dendl;
- return r;
-}
-
-int Client::open(const char *relpath, int flags, const UserPerm& perms, mode_t mode)
-{
- /* Use default file striping parameters */
- return open(relpath, flags, perms, mode, 0, 0, 0, NULL);
-}
-
-int Client::lookup_hash(inodeno_t ino, inodeno_t dirino, const char *name,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "lookup_hash enter(" << ino << ", #" << dirino << "/" << name << ")" << dendl;
-
- if (unmounting)
- return -ENOTCONN;
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LOOKUPHASH);
- filepath path(ino);
- req->set_filepath(path);
-
- uint32_t h = ceph_str_hash(CEPH_STR_HASH_RJENKINS, name, strlen(name));
- char f[30];
- sprintf(f, "%u", h);
- filepath path2(dirino);
- path2.push_dentry(string(f));
- req->set_filepath2(path2);
-
- int r = make_request(req, perms, NULL, NULL,
- rand() % mdsmap->get_num_in_mds());
- ldout(cct, 3) << "lookup_hash exit(" << ino << ", #" << dirino << "/" << name << ") = " << r << dendl;
- return r;
-}
-
-
-/**
- * Load inode into local cache.
- *
- * If inode pointer is non-NULL, and take a reference on
- * the resulting Inode object in one operation, so that caller
- * can safely assume inode will still be there after return.
- */
-int Client::lookup_ino(inodeno_t ino, const UserPerm& perms, Inode **inode)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "lookup_ino enter(" << ino << ")" << dendl;
-
- if (unmounting)
- return -ENOTCONN;
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LOOKUPINO);
- filepath path(ino);
- req->set_filepath(path);
-
- int r = make_request(req, perms, NULL, NULL, rand() % mdsmap->get_num_in_mds());
- if (r == 0 && inode != NULL) {
- vinodeno_t vino(ino, CEPH_NOSNAP);
- unordered_map<vinodeno_t,Inode*>::iterator p = inode_map.find(vino);
- assert(p != inode_map.end());
- *inode = p->second;
- _ll_get(*inode);
- }
- ldout(cct, 3) << "lookup_ino exit(" << ino << ") = " << r << dendl;
- return r;
-}
-
-
-
-/**
- * Find the parent inode of `ino` and insert it into
- * our cache. Conditionally also set `parent` to a referenced
- * Inode* if caller provides non-NULL value.
- */
-int Client::lookup_parent(Inode *ino, const UserPerm& perms, Inode **parent)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "lookup_parent enter(" << ino->ino << ")" << dendl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (!ino->dn_set.empty()) {
- // if we exposed the parent here, we'd need to check permissions,
- // but right now we just rely on the MDS doing so in make_request
- ldout(cct, 3) << "lookup_parent dentry already present" << dendl;
- return 0;
- }
-
- if (ino->is_root()) {
- *parent = NULL;
- ldout(cct, 3) << "ino is root, no parent" << dendl;
- return -EINVAL;
- }
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LOOKUPPARENT);
- filepath path(ino->ino);
- req->set_filepath(path);
-
- InodeRef target;
- int r = make_request(req, perms, &target, NULL, rand() % mdsmap->get_num_in_mds());
- // Give caller a reference to the parent ino if they provided a pointer.
- if (parent != NULL) {
- if (r == 0) {
- *parent = target.get();
- _ll_get(*parent);
- ldout(cct, 3) << "lookup_parent found parent " << (*parent)->ino << dendl;
- } else {
- *parent = NULL;
- }
- }
- ldout(cct, 3) << "lookup_parent exit(" << ino->ino << ") = " << r << dendl;
- return r;
-}
-
-
-/**
- * Populate the parent dentry for `ino`, provided it is
- * a child of `parent`.
- */
-int Client::lookup_name(Inode *ino, Inode *parent, const UserPerm& perms)
-{
- assert(parent->is_dir());
-
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "lookup_name enter(" << ino->ino << ")" << dendl;
-
- if (unmounting)
- return -ENOTCONN;
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LOOKUPNAME);
- req->set_filepath2(filepath(parent->ino));
- req->set_filepath(filepath(ino->ino));
- req->set_inode(ino);
-
- int r = make_request(req, perms, NULL, NULL, rand() % mdsmap->get_num_in_mds());
- ldout(cct, 3) << "lookup_name exit(" << ino->ino << ") = " << r << dendl;
- return r;
-}
-
-
- Fh *Client::_create_fh(Inode *in, int flags, int cmode, const UserPerm& perms)
-{
- assert(in);
- Fh *f = new Fh(in);
- f->mode = cmode;
- f->flags = flags;
-
- // inode
- f->actor_perms = perms;
-
- ldout(cct, 10) << "_create_fh " << in->ino << " mode " << cmode << dendl;
-
- if (in->snapid != CEPH_NOSNAP) {
- in->snap_cap_refs++;
- ldout(cct, 5) << "open success, fh is " << f << " combined IMMUTABLE SNAP caps "
- << ccap_string(in->caps_issued()) << dendl;
- }
-
- const md_config_t *conf = cct->_conf;
- f->readahead.set_trigger_requests(1);
- f->readahead.set_min_readahead_size(conf->client_readahead_min);
- uint64_t max_readahead = Readahead::NO_LIMIT;
- if (conf->client_readahead_max_bytes) {
- max_readahead = MIN(max_readahead, (uint64_t)conf->client_readahead_max_bytes);
- }
- if (conf->client_readahead_max_periods) {
- max_readahead = MIN(max_readahead, in->layout.get_period()*(uint64_t)conf->client_readahead_max_periods);
- }
- f->readahead.set_max_readahead_size(max_readahead);
- vector<uint64_t> alignments;
- alignments.push_back(in->layout.get_period());
- alignments.push_back(in->layout.stripe_unit);
- f->readahead.set_alignments(alignments);
-
- return f;
-}
-
-int Client::_release_fh(Fh *f)
-{
- //ldout(cct, 3) << "op: client->close(open_files[ " << fh << " ]);" << dendl;
- //ldout(cct, 3) << "op: open_files.erase( " << fh << " );" << dendl;
- Inode *in = f->inode.get();
- ldout(cct, 5) << "_release_fh " << f << " mode " << f->mode << " on " << *in << dendl;
-
- if (in->snapid == CEPH_NOSNAP) {
- if (in->put_open_ref(f->mode)) {
- _flush(in, new C_Client_FlushComplete(this, in));
- check_caps(in, 0);
- }
- } else {
- assert(in->snap_cap_refs > 0);
- in->snap_cap_refs--;
- }
-
- _release_filelocks(f);
-
- // Finally, read any async err (i.e. from flushes)
- int err = f->take_async_err();
- if (err != 0) {
- ldout(cct, 1) << "_release_fh " << f << " on inode " << *in << " caught async_err = "
- << cpp_strerror(err) << dendl;
- } else {
- ldout(cct, 10) << "_release_fh " << f << " on inode " << *in << " no async_err state" << dendl;
- }
-
- _put_fh(f);
-
- return err;
-}
-
-void Client::_put_fh(Fh *f)
-{
- int left = f->put();
- if (!left) {
- delete f;
- }
-}
-
-int Client::_open(Inode *in, int flags, mode_t mode, Fh **fhp,
- const UserPerm& perms)
-{
- if (in->snapid != CEPH_NOSNAP &&
- (flags & (O_WRONLY | O_RDWR | O_CREAT | O_TRUNC | O_APPEND))) {
- return -EROFS;
- }
-
- // use normalized flags to generate cmode
- int cmode = ceph_flags_to_mode(ceph_flags_sys2wire(flags));
- if (cmode < 0)
- return -EINVAL;
- int want = ceph_caps_for_mode(cmode);
- int result = 0;
-
- in->get_open_ref(cmode); // make note of pending open, since it effects _wanted_ caps.
-
- if ((flags & O_TRUNC) == 0 &&
- in->caps_issued_mask(want)) {
- // update wanted?
- check_caps(in, CHECK_CAPS_NODELAY);
- } else {
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_OPEN);
- filepath path;
- in->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->head.args.open.flags = ceph_flags_sys2wire(flags & ~O_CREAT);
- req->head.args.open.mode = mode;
- req->head.args.open.pool = -1;
- if (cct->_conf->client_debug_getattr_caps)
- req->head.args.open.mask = DEBUG_GETATTR_CAPS;
- else
- req->head.args.open.mask = 0;
- req->head.args.open.old_size = in->size; // for O_TRUNC
- req->set_inode(in);
- result = make_request(req, perms);
- }
-
- // success?
- if (result >= 0) {
- if (fhp)
- *fhp = _create_fh(in, flags, cmode, perms);
- } else {
- in->put_open_ref(cmode);
- }
-
- trim_cache();
-
- return result;
-}
-
-int Client::_renew_caps(Inode *in)
-{
- int wanted = in->caps_file_wanted();
- if (in->is_any_caps() &&
- ((wanted & CEPH_CAP_ANY_WR) == 0 || in->auth_cap)) {
- check_caps(in, CHECK_CAPS_NODELAY);
- return 0;
- }
-
- int flags = 0;
- if ((wanted & CEPH_CAP_FILE_RD) && (wanted & CEPH_CAP_FILE_WR))
- flags = O_RDWR;
- else if (wanted & CEPH_CAP_FILE_RD)
- flags = O_RDONLY;
- else if (wanted & CEPH_CAP_FILE_WR)
- flags = O_WRONLY;
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_OPEN);
- filepath path;
- in->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->head.args.open.flags = flags;
- req->head.args.open.pool = -1;
- if (cct->_conf->client_debug_getattr_caps)
- req->head.args.open.mask = DEBUG_GETATTR_CAPS;
- else
- req->head.args.open.mask = 0;
- req->set_inode(in);
-
- // duplicate in case Cap goes away; not sure if that race is a concern?
- const UserPerm *pperm = in->get_best_perms();
- UserPerm perms;
- if (pperm != NULL)
- perms = *pperm;
- int ret = make_request(req, perms);
- return ret;
-}
-
-int Client::close(int fd)
-{
- ldout(cct, 3) << "close enter(" << fd << ")" << dendl;
- Mutex::Locker lock(client_lock);
- tout(cct) << "close" << std::endl;
- tout(cct) << fd << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *fh = get_filehandle(fd);
- if (!fh)
- return -EBADF;
- int err = _release_fh(fh);
- fd_map.erase(fd);
- put_fd(fd);
- ldout(cct, 3) << "close exit(" << fd << ")" << dendl;
- return err;
-}
-
-
-// ------------
-// read, write
-
-loff_t Client::lseek(int fd, loff_t offset, int whence)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "lseek" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << offset << std::endl;
- tout(cct) << whence << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- return _lseek(f, offset, whence);
-}
-
-loff_t Client::_lseek(Fh *f, loff_t offset, int whence)
-{
- Inode *in = f->inode.get();
- int r;
-
- switch (whence) {
- case SEEK_SET:
- f->pos = offset;
- break;
-
- case SEEK_CUR:
- f->pos += offset;
- break;
-
- case SEEK_END:
- r = _getattr(in, CEPH_STAT_CAP_SIZE, f->actor_perms);
- if (r < 0)
- return r;
- f->pos = in->size + offset;
- break;
-
- default:
- ceph_abort();
- }
-
- ldout(cct, 3) << "_lseek(" << f << ", " << offset << ", " << whence << ") = " << f->pos << dendl;
- return f->pos;
-}
-
-
-void Client::lock_fh_pos(Fh *f)
-{
- ldout(cct, 10) << "lock_fh_pos " << f << dendl;
-
- if (f->pos_locked || !f->pos_waiters.empty()) {
- Cond cond;
- f->pos_waiters.push_back(&cond);
- ldout(cct, 10) << "lock_fh_pos BLOCKING on " << f << dendl;
- while (f->pos_locked || f->pos_waiters.front() != &cond)
- cond.Wait(client_lock);
- ldout(cct, 10) << "lock_fh_pos UNBLOCKING on " << f << dendl;
- assert(f->pos_waiters.front() == &cond);
- f->pos_waiters.pop_front();
- }
-
- f->pos_locked = true;
-}
-
-void Client::unlock_fh_pos(Fh *f)
-{
- ldout(cct, 10) << "unlock_fh_pos " << f << dendl;
- f->pos_locked = false;
-}
-
-int Client::uninline_data(Inode *in, Context *onfinish)
-{
- if (!in->inline_data.length()) {
- onfinish->complete(0);
- return 0;
- }
-
- char oid_buf[32];
- snprintf(oid_buf, sizeof(oid_buf), "%llx.00000000", (long long unsigned)in->ino);
- object_t oid = oid_buf;
-
- ObjectOperation create_ops;
- create_ops.create(false);
-
- objecter->mutate(oid,
- OSDMap::file_to_object_locator(in->layout),
- create_ops,
- in->snaprealm->get_snap_context(),
- ceph::real_clock::now(),
- 0,
- NULL);
-
- bufferlist inline_version_bl;
- ::encode(in->inline_version, inline_version_bl);
-
- ObjectOperation uninline_ops;
- uninline_ops.cmpxattr("inline_version",
- CEPH_OSD_CMPXATTR_OP_GT,
- CEPH_OSD_CMPXATTR_MODE_U64,
- inline_version_bl);
- bufferlist inline_data = in->inline_data;
- uninline_ops.write(0, inline_data, in->truncate_size, in->truncate_seq);
- uninline_ops.setxattr("inline_version", stringify(in->inline_version));
-
- objecter->mutate(oid,
- OSDMap::file_to_object_locator(in->layout),
- uninline_ops,
- in->snaprealm->get_snap_context(),
- ceph::real_clock::now(),
- 0,
- onfinish);
-
- return 0;
-}
-
-//
-
-// blocking osd interface
-
-int Client::read(int fd, char *buf, loff_t size, loff_t offset)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "read" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << size << std::endl;
- tout(cct) << offset << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- bufferlist bl;
- int r = _read(f, offset, size, &bl);
- ldout(cct, 3) << "read(" << fd << ", " << (void*)buf << ", " << size << ", " << offset << ") = " << r << dendl;
- if (r >= 0) {
- bl.copy(0, bl.length(), buf);
- r = bl.length();
- }
- return r;
-}
-
-int Client::preadv(int fd, const struct iovec *iov, int iovcnt, loff_t offset)
-{
- if (iovcnt < 0)
- return -EINVAL;
- return _preadv_pwritev(fd, iov, iovcnt, offset, false);
-}
-
-int Client::_read(Fh *f, int64_t offset, uint64_t size, bufferlist *bl)
-{
- const md_config_t *conf = cct->_conf;
- Inode *in = f->inode.get();
-
- if ((f->mode & CEPH_FILE_MODE_RD) == 0)
- return -EBADF;
- //bool lazy = f->mode == CEPH_FILE_MODE_LAZY;
-
- bool movepos = false;
- if (offset < 0) {
- lock_fh_pos(f);
- offset = f->pos;
- movepos = true;
- }
- loff_t start_pos = offset;
-
- if (in->inline_version == 0) {
- int r = _getattr(in, CEPH_STAT_CAP_INLINE_DATA, f->actor_perms, true);
- if (r < 0) {
- if (movepos)
- unlock_fh_pos(f);
- return r;
- }
- assert(in->inline_version > 0);
- }
-
-retry:
- int have;
- int r = get_caps(in, CEPH_CAP_FILE_RD, CEPH_CAP_FILE_CACHE, &have, -1);
- if (r < 0) {
- if (movepos)
- unlock_fh_pos(f);
- return r;
- }
- if (f->flags & O_DIRECT)
- have &= ~CEPH_CAP_FILE_CACHE;
-
- Mutex uninline_flock("Client::_read_uninline_data flock");
- Cond uninline_cond;
- bool uninline_done = false;
- int uninline_ret = 0;
- Context *onuninline = NULL;
-
- if (in->inline_version < CEPH_INLINE_NONE) {
- if (!(have & CEPH_CAP_FILE_CACHE)) {
- onuninline = new C_SafeCond(&uninline_flock,
- &uninline_cond,
- &uninline_done,
- &uninline_ret);
- uninline_data(in, onuninline);
- } else {
- uint32_t len = in->inline_data.length();
-
- uint64_t endoff = offset + size;
- if (endoff > in->size)
- endoff = in->size;
-
- if (offset < len) {
- if (endoff <= len) {
- bl->substr_of(in->inline_data, offset, endoff - offset);
- } else {
- bl->substr_of(in->inline_data, offset, len - offset);
- bl->append_zero(endoff - len);
- }
- } else if ((uint64_t)offset < endoff) {
- bl->append_zero(endoff - offset);
- }
-
- goto success;
- }
- }
-
- if (!conf->client_debug_force_sync_read &&
- (conf->client_oc && (have & CEPH_CAP_FILE_CACHE))) {
-
- if (f->flags & O_RSYNC) {
- _flush_range(in, offset, size);
- }
- r = _read_async(f, offset, size, bl);
- if (r < 0)
- goto done;
- } else {
- if (f->flags & O_DIRECT)
- _flush_range(in, offset, size);
-
- bool checkeof = false;
- r = _read_sync(f, offset, size, bl, &checkeof);
- if (r < 0)
- goto done;
- if (checkeof) {
- offset += r;
- size -= r;
-
- put_cap_ref(in, CEPH_CAP_FILE_RD);
- have = 0;
- // reverify size
- r = _getattr(in, CEPH_STAT_CAP_SIZE, f->actor_perms);
- if (r < 0)
- goto done;
-
- // eof? short read.
- if ((uint64_t)offset < in->size)
- goto retry;
- }
- }
-
-success:
- if (movepos) {
- // adjust fd pos
- f->pos = start_pos + bl->length();
- unlock_fh_pos(f);
- }
-
-done:
- // done!
-
- if (onuninline) {
- client_lock.Unlock();
- uninline_flock.Lock();
- while (!uninline_done)
- uninline_cond.Wait(uninline_flock);
- uninline_flock.Unlock();
- client_lock.Lock();
-
- if (uninline_ret >= 0 || uninline_ret == -ECANCELED) {
- in->inline_data.clear();
- in->inline_version = CEPH_INLINE_NONE;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
- check_caps(in, 0);
- } else
- r = uninline_ret;
- }
-
- if (have)
- put_cap_ref(in, CEPH_CAP_FILE_RD);
- if (r < 0) {
- if (movepos)
- unlock_fh_pos(f);
- return r;
- } else
- return bl->length();
-}
-
-Client::C_Readahead::C_Readahead(Client *c, Fh *f) :
- client(c), f(f) {
- f->get();
- f->readahead.inc_pending();
-}
-
-Client::C_Readahead::~C_Readahead() {
- f->readahead.dec_pending();
- client->_put_fh(f);
-}
-
-void Client::C_Readahead::finish(int r) {
- lgeneric_subdout(client->cct, client, 20) << "client." << client->get_nodeid() << " " << "C_Readahead on " << f->inode << dendl;
- client->put_cap_ref(f->inode.get(), CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE);
-}
-
-int Client::_read_async(Fh *f, uint64_t off, uint64_t len, bufferlist *bl)
-{
- const md_config_t *conf = cct->_conf;
- Inode *in = f->inode.get();
-
- ldout(cct, 10) << "_read_async " << *in << " " << off << "~" << len << dendl;
-
- // trim read based on file size?
- if (off >= in->size)
- return 0;
- if (len == 0)
- return 0;
- if (off + len > in->size) {
- len = in->size - off;
- }
-
- ldout(cct, 10) << " min_bytes=" << f->readahead.get_min_readahead_size()
- << " max_bytes=" << f->readahead.get_max_readahead_size()
- << " max_periods=" << conf->client_readahead_max_periods << dendl;
-
- // read (and possibly block)
- int r, rvalue = 0;
- Mutex flock("Client::_read_async flock");
- Cond cond;
- bool done = false;
- Context *onfinish = new C_SafeCond(&flock, &cond, &done, &rvalue);
- r = objectcacher->file_read(&in->oset, &in->layout, in->snapid,
- off, len, bl, 0, onfinish);
- if (r == 0) {
- get_cap_ref(in, CEPH_CAP_FILE_CACHE);
- client_lock.Unlock();
- flock.Lock();
- while (!done)
- cond.Wait(flock);
- flock.Unlock();
- client_lock.Lock();
- put_cap_ref(in, CEPH_CAP_FILE_CACHE);
- r = rvalue;
- } else {
- // it was cached.
- delete onfinish;
- }
-
- if(f->readahead.get_min_readahead_size() > 0) {
- pair<uint64_t, uint64_t> readahead_extent = f->readahead.update(off, len, in->size);
- if (readahead_extent.second > 0) {
- ldout(cct, 20) << "readahead " << readahead_extent.first << "~" << readahead_extent.second
- << " (caller wants " << off << "~" << len << ")" << dendl;
- Context *onfinish2 = new C_Readahead(this, f);
- int r2 = objectcacher->file_read(&in->oset, &in->layout, in->snapid,
- readahead_extent.first, readahead_extent.second,
- NULL, 0, onfinish2);
- if (r2 == 0) {
- ldout(cct, 20) << "readahead initiated, c " << onfinish2 << dendl;
- get_cap_ref(in, CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE);
- } else {
- ldout(cct, 20) << "readahead was no-op, already cached" << dendl;
- delete onfinish2;
- }
- }
- }
-
- return r;
-}
-
-int Client::_read_sync(Fh *f, uint64_t off, uint64_t len, bufferlist *bl,
- bool *checkeof)
-{
- Inode *in = f->inode.get();
- uint64_t pos = off;
- int left = len;
- int read = 0;
-
- ldout(cct, 10) << "_read_sync " << *in << " " << off << "~" << len << dendl;
-
- Mutex flock("Client::_read_sync flock");
- Cond cond;
- while (left > 0) {
- int r = 0;
- bool done = false;
- Context *onfinish = new C_SafeCond(&flock, &cond, &done, &r);
- bufferlist tbl;
-
- int wanted = left;
- filer->read_trunc(in->ino, &in->layout, in->snapid,
- pos, left, &tbl, 0,
- in->truncate_size, in->truncate_seq,
- onfinish);
- client_lock.Unlock();
- flock.Lock();
- while (!done)
- cond.Wait(flock);
- flock.Unlock();
- client_lock.Lock();
-
- // if we get ENOENT from OSD, assume 0 bytes returned
- if (r == -ENOENT)
- r = 0;
- if (r < 0)
- return r;
- if (tbl.length()) {
- r = tbl.length();
-
- read += r;
- pos += r;
- left -= r;
- bl->claim_append(tbl);
- }
- // short read?
- if (r >= 0 && r < wanted) {
- if (pos < in->size) {
- // zero up to known EOF
- int64_t some = in->size - pos;
- if (some > left)
- some = left;
- bufferptr z(some);
- z.zero();
- bl->push_back(z);
- read += some;
- pos += some;
- left -= some;
- if (left == 0)
- return read;
- }
-
- *checkeof = true;
- return read;
- }
- }
- return read;
-}
-
-
-/*
- * we keep count of uncommitted sync writes on the inode, so that
- * fsync can DDRT.
- */
-void Client::_sync_write_commit(Inode *in)
-{
- assert(unsafe_sync_write > 0);
- unsafe_sync_write--;
-
- put_cap_ref(in, CEPH_CAP_FILE_BUFFER);
-
- ldout(cct, 15) << "sync_write_commit unsafe_sync_write = " << unsafe_sync_write << dendl;
- if (unsafe_sync_write == 0 && unmounting) {
- ldout(cct, 10) << "sync_write_commit -- no more unsafe writes, unmount can proceed" << dendl;
- mount_cond.Signal();
- }
-}
-
-int Client::write(int fd, const char *buf, loff_t size, loff_t offset)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "write" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << size << std::endl;
- tout(cct) << offset << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *fh = get_filehandle(fd);
- if (!fh)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (fh->flags & O_PATH)
- return -EBADF;
-#endif
- int r = _write(fh, offset, size, buf, NULL, 0);
- ldout(cct, 3) << "write(" << fd << ", \"...\", " << size << ", " << offset << ") = " << r << dendl;
- return r;
-}
-
-int Client::pwritev(int fd, const struct iovec *iov, int iovcnt, int64_t offset)
-{
- if (iovcnt < 0)
- return -EINVAL;
- return _preadv_pwritev(fd, iov, iovcnt, offset, true);
-}
-
-int Client::_preadv_pwritev(int fd, const struct iovec *iov, unsigned iovcnt, int64_t offset, bool write)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << fd << std::endl;
- tout(cct) << offset << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *fh = get_filehandle(fd);
- if (!fh)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (fh->flags & O_PATH)
- return -EBADF;
-#endif
- loff_t totallen = 0;
- for (unsigned i = 0; i < iovcnt; i++) {
- totallen += iov[i].iov_len;
- }
- if (write) {
- int w = _write(fh, offset, totallen, NULL, iov, iovcnt);
- ldout(cct, 3) << "pwritev(" << fd << ", \"...\", " << totallen << ", " << offset << ") = " << w << dendl;
- return w;
- } else {
- bufferlist bl;
- int r = _read(fh, offset, totallen, &bl);
- ldout(cct, 3) << "preadv(" << fd << ", " << offset << ") = " << r << dendl;
- if (r <= 0)
- return r;
-
- int bufoff = 0;
- for (unsigned j = 0, resid = r; j < iovcnt && resid > 0; j++) {
- /*
- * This piece of code aims to handle the case that bufferlist does not have enough data
- * to fill in the iov
- */
- if (resid < iov[j].iov_len) {
- bl.copy(bufoff, resid, (char *)iov[j].iov_base);
- break;
- } else {
- bl.copy(bufoff, iov[j].iov_len, (char *)iov[j].iov_base);
- }
- resid -= iov[j].iov_len;
- bufoff += iov[j].iov_len;
- }
- return r;
- }
-}
-
-int Client::_write(Fh *f, int64_t offset, uint64_t size, const char *buf,
- const struct iovec *iov, int iovcnt)
-{
- if ((uint64_t)(offset+size) > mdsmap->get_max_filesize()) //too large!
- return -EFBIG;
-
- //ldout(cct, 7) << "write fh " << fh << " size " << size << " offset " << offset << dendl;
- Inode *in = f->inode.get();
-
- if (objecter->osdmap_pool_full(in->layout.pool_id)) {
- return -ENOSPC;
- }
-
- assert(in->snapid == CEPH_NOSNAP);
-
- // was Fh opened as writeable?
- if ((f->mode & CEPH_FILE_MODE_WR) == 0)
- return -EBADF;
-
- // check quota
- uint64_t endoff = offset + size;
- if (endoff > in->size && is_quota_bytes_exceeded(in, endoff - in->size,
- f->actor_perms)) {
- return -EDQUOT;
- }
-
- // use/adjust fd pos?
- if (offset < 0) {
- lock_fh_pos(f);
- /*
- * FIXME: this is racy in that we may block _after_ this point waiting for caps, and size may
- * change out from under us.
- */
- if (f->flags & O_APPEND) {
- int r = _lseek(f, 0, SEEK_END);
- if (r < 0) {
- unlock_fh_pos(f);
- return r;
- }
- }
- offset = f->pos;
- f->pos = offset+size;
- unlock_fh_pos(f);
- }
-
- //bool lazy = f->mode == CEPH_FILE_MODE_LAZY;
-
- ldout(cct, 10) << "cur file size is " << in->size << dendl;
-
- // time it.
- utime_t start = ceph_clock_now();
-
- if (in->inline_version == 0) {
- int r = _getattr(in, CEPH_STAT_CAP_INLINE_DATA, f->actor_perms, true);
- if (r < 0)
- return r;
- assert(in->inline_version > 0);
- }
-
- // copy into fresh buffer (since our write may be resub, async)
- bufferlist bl;
- if (buf) {
- if (size > 0)
- bl.append(buf, size);
- } else if (iov){
- for (int i = 0; i < iovcnt; i++) {
- if (iov[i].iov_len > 0) {
- bl.append((const char *)iov[i].iov_base, iov[i].iov_len);
- }
- }
- }
-
- utime_t lat;
- uint64_t totalwritten;
- int have;
- int r = get_caps(in, CEPH_CAP_FILE_WR|CEPH_CAP_AUTH_SHARED,
- CEPH_CAP_FILE_BUFFER, &have, endoff);
- if (r < 0)
- return r;
-
- /* clear the setuid/setgid bits, if any */
- if (unlikely(in->mode & (S_ISUID|S_ISGID)) && size > 0) {
- struct ceph_statx stx = { 0 };
-
- put_cap_ref(in, CEPH_CAP_AUTH_SHARED);
- r = __setattrx(in, &stx, CEPH_SETATTR_KILL_SGUID, f->actor_perms);
- if (r < 0)
- return r;
- } else {
- put_cap_ref(in, CEPH_CAP_AUTH_SHARED);
- }
-
- if (f->flags & O_DIRECT)
- have &= ~CEPH_CAP_FILE_BUFFER;
-
- ldout(cct, 10) << " snaprealm " << *in->snaprealm << dendl;
-
- Mutex uninline_flock("Client::_write_uninline_data flock");
- Cond uninline_cond;
- bool uninline_done = false;
- int uninline_ret = 0;
- Context *onuninline = NULL;
-
- if (in->inline_version < CEPH_INLINE_NONE) {
- if (endoff > cct->_conf->client_max_inline_size ||
- endoff > CEPH_INLINE_MAX_SIZE ||
- !(have & CEPH_CAP_FILE_BUFFER)) {
- onuninline = new C_SafeCond(&uninline_flock,
- &uninline_cond,
- &uninline_done,
- &uninline_ret);
- uninline_data(in, onuninline);
- } else {
- get_cap_ref(in, CEPH_CAP_FILE_BUFFER);
-
- uint32_t len = in->inline_data.length();
-
- if (endoff < len)
- in->inline_data.copy(endoff, len - endoff, bl);
-
- if (offset < len)
- in->inline_data.splice(offset, len - offset);
- else if (offset > len)
- in->inline_data.append_zero(offset - len);
-
- in->inline_data.append(bl);
- in->inline_version++;
-
- put_cap_ref(in, CEPH_CAP_FILE_BUFFER);
-
- goto success;
- }
- }
-
- if (cct->_conf->client_oc && (have & CEPH_CAP_FILE_BUFFER)) {
- // do buffered write
- if (!in->oset.dirty_or_tx)
- get_cap_ref(in, CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_BUFFER);
-
- get_cap_ref(in, CEPH_CAP_FILE_BUFFER);
-
- // async, caching, non-blocking.
- r = objectcacher->file_write(&in->oset, &in->layout,
- in->snaprealm->get_snap_context(),
- offset, size, bl, ceph::real_clock::now(),
- 0);
- put_cap_ref(in, CEPH_CAP_FILE_BUFFER);
-
- if (r < 0)
- goto done;
-
- // flush cached write if O_SYNC is set on file fh
- // O_DSYNC == O_SYNC on linux < 2.6.33
- // O_SYNC = __O_SYNC | O_DSYNC on linux >= 2.6.33
- if ((f->flags & O_SYNC) || (f->flags & O_DSYNC)) {
- _flush_range(in, offset, size);
- }
- } else {
- if (f->flags & O_DIRECT)
- _flush_range(in, offset, size);
-
- // simple, non-atomic sync write
- Mutex flock("Client::_write flock");
- Cond cond;
- bool done = false;
- Context *onfinish = new C_SafeCond(&flock, &cond, &done);
-
- unsafe_sync_write++;
- get_cap_ref(in, CEPH_CAP_FILE_BUFFER); // released by onsafe callback
-
- filer->write_trunc(in->ino, &in->layout, in->snaprealm->get_snap_context(),
- offset, size, bl, ceph::real_clock::now(), 0,
- in->truncate_size, in->truncate_seq,
- onfinish);
- client_lock.Unlock();
- flock.Lock();
-
- while (!done)
- cond.Wait(flock);
- flock.Unlock();
- client_lock.Lock();
- _sync_write_commit(in);
- }
-
- // if we get here, write was successful, update client metadata
-success:
- // time
- lat = ceph_clock_now();
- lat -= start;
- logger->tinc(l_c_wrlat, lat);
-
- totalwritten = size;
- r = (int)totalwritten;
-
- // extend file?
- if (totalwritten + offset > in->size) {
- in->size = totalwritten + offset;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
-
- if (is_quota_bytes_approaching(in, f->actor_perms)) {
- check_caps(in, CHECK_CAPS_NODELAY);
- } else if (is_max_size_approaching(in)) {
- check_caps(in, 0);
- }
-
- ldout(cct, 7) << "wrote to " << totalwritten+offset << ", extending file size" << dendl;
- } else {
- ldout(cct, 7) << "wrote to " << totalwritten+offset << ", leaving file size at " << in->size << dendl;
- }
-
- // mtime
- in->mtime = ceph_clock_now();
- in->change_attr++;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
-
-done:
-
- if (onuninline) {
- client_lock.Unlock();
- uninline_flock.Lock();
- while (!uninline_done)
- uninline_cond.Wait(uninline_flock);
- uninline_flock.Unlock();
- client_lock.Lock();
-
- if (uninline_ret >= 0 || uninline_ret == -ECANCELED) {
- in->inline_data.clear();
- in->inline_version = CEPH_INLINE_NONE;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
- check_caps(in, 0);
- } else
- r = uninline_ret;
- }
-
- put_cap_ref(in, CEPH_CAP_FILE_WR);
- return r;
-}
-
-int Client::_flush(Fh *f)
-{
- Inode *in = f->inode.get();
- int err = f->take_async_err();
- if (err != 0) {
- ldout(cct, 1) << __func__ << ": " << f << " on inode " << *in << " caught async_err = "
- << cpp_strerror(err) << dendl;
- } else {
- ldout(cct, 10) << __func__ << ": " << f << " on inode " << *in << " no async_err state" << dendl;
- }
-
- return err;
-}
-
-int Client::truncate(const char *relpath, loff_t length, const UserPerm& perms)
-{
- struct ceph_statx stx;
- stx.stx_size = length;
- return setattrx(relpath, &stx, CEPH_SETATTR_SIZE, perms);
-}
-
-int Client::ftruncate(int fd, loff_t length, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "ftruncate" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << length << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- struct stat attr;
- attr.st_size = length;
- return _setattr(f->inode, &attr, CEPH_SETATTR_SIZE, perms);
-}
-
-int Client::fsync(int fd, bool syncdataonly)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fsync" << std::endl;
- tout(cct) << fd << std::endl;
- tout(cct) << syncdataonly << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (f->flags & O_PATH)
- return -EBADF;
-#endif
- int r = _fsync(f, syncdataonly);
- if (r == 0) {
- // The IOs in this fsync were okay, but maybe something happened
- // in the background that we shoudl be reporting?
- r = f->take_async_err();
- ldout(cct, 3) << "fsync(" << fd << ", " << syncdataonly
- << ") = 0, async_err = " << r << dendl;
- } else {
- // Assume that an error we encountered during fsync, even reported
- // synchronously, would also have applied the error to the Fh, and we
- // should clear it here to avoid returning the same error again on next
- // call.
- ldout(cct, 3) << "fsync(" << fd << ", " << syncdataonly << ") = "
- << r << dendl;
- f->take_async_err();
- }
- return r;
-}
-
-int Client::_fsync(Inode *in, bool syncdataonly)
-{
- int r = 0;
- Mutex lock("Client::_fsync::lock");
- Cond cond;
- bool done = false;
- C_SafeCond *object_cacher_completion = NULL;
- ceph_tid_t flush_tid = 0;
- InodeRef tmp_ref;
-
- ldout(cct, 3) << "_fsync on " << *in << " " << (syncdataonly ? "(dataonly)":"(data+metadata)") << dendl;
-
- if (cct->_conf->client_oc) {
- object_cacher_completion = new C_SafeCond(&lock, &cond, &done, &r);
- tmp_ref = in; // take a reference; C_SafeCond doesn't and _flush won't either
- _flush(in, object_cacher_completion);
- ldout(cct, 15) << "using return-valued form of _fsync" << dendl;
- }
-
- if (!syncdataonly && in->dirty_caps) {
- check_caps(in, CHECK_CAPS_NODELAY|CHECK_CAPS_SYNCHRONOUS);
- if (in->flushing_caps)
- flush_tid = last_flush_tid;
- } else ldout(cct, 10) << "no metadata needs to commit" << dendl;
-
- if (!syncdataonly && !in->unsafe_ops.empty()) {
- MetaRequest *req = in->unsafe_ops.back();
- ldout(cct, 15) << "waiting on unsafe requests, last tid " << req->get_tid() << dendl;
-
- req->get();
- wait_on_list(req->waitfor_safe);
- put_request(req);
- }
-
- if (object_cacher_completion) { // wait on a real reply instead of guessing
- client_lock.Unlock();
- lock.Lock();
- ldout(cct, 15) << "waiting on data to flush" << dendl;
- while (!done)
- cond.Wait(lock);
- lock.Unlock();
- client_lock.Lock();
- ldout(cct, 15) << "got " << r << " from flush writeback" << dendl;
- } else {
- // FIXME: this can starve
- while (in->cap_refs[CEPH_CAP_FILE_BUFFER] > 0) {
- ldout(cct, 10) << "ino " << in->ino << " has " << in->cap_refs[CEPH_CAP_FILE_BUFFER]
- << " uncommitted, waiting" << dendl;
- wait_on_list(in->waitfor_commit);
- }
- }
-
- if (!r) {
- if (flush_tid > 0)
- wait_sync_caps(in, flush_tid);
-
- ldout(cct, 10) << "ino " << in->ino << " has no uncommitted writes" << dendl;
- } else {
- ldout(cct, 1) << "ino " << in->ino << " failed to commit to disk! "
- << cpp_strerror(-r) << dendl;
- }
-
- return r;
-}
-
-int Client::_fsync(Fh *f, bool syncdataonly)
-{
- ldout(cct, 3) << "_fsync(" << f << ", " << (syncdataonly ? "dataonly)":"data+metadata)") << dendl;
- return _fsync(f->inode.get(), syncdataonly);
-}
-
-int Client::fstat(int fd, struct stat *stbuf, const UserPerm& perms, int mask)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fstat mask " << hex << mask << dec << std::endl;
- tout(cct) << fd << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- int r = _getattr(f->inode, mask, perms);
- if (r < 0)
- return r;
- fill_stat(f->inode, stbuf, NULL);
- ldout(cct, 3) << "fstat(" << fd << ", " << stbuf << ") = " << r << dendl;
- return r;
-}
-
-int Client::fstatx(int fd, struct ceph_statx *stx, const UserPerm& perms,
- unsigned int want, unsigned int flags)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fstatx flags " << hex << flags << " want " << want << dec << std::endl;
- tout(cct) << fd << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-
- unsigned mask = statx_to_mask(flags, want);
-
- int r = 0;
- if (mask && !f->inode->caps_issued_mask(mask)) {
- r = _getattr(f->inode, mask, perms);
- if (r < 0) {
- ldout(cct, 3) << "fstatx exit on error!" << dendl;
- return r;
- }
- }
-
- fill_statx(f->inode, mask, stx);
- ldout(cct, 3) << "fstatx(" << fd << ", " << stx << ") = " << r << dendl;
- return r;
-}
-
-// not written yet, but i want to link!
-
-int Client::chdir(const char *relpath, std::string &new_cwd,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "chdir" << std::endl;
- tout(cct) << relpath << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms);
- if (r < 0)
- return r;
- if (cwd != in)
- cwd.swap(in);
- ldout(cct, 3) << "chdir(" << relpath << ") cwd now " << cwd->ino << dendl;
-
- _getcwd(new_cwd, perms);
- return 0;
-}
-
-void Client::_getcwd(string& dir, const UserPerm& perms)
-{
- filepath path;
- ldout(cct, 10) << "getcwd " << *cwd << dendl;
-
- Inode *in = cwd.get();
- while (in != root) {
- assert(in->dn_set.size() < 2); // dirs can't be hard-linked
-
- // A cwd or ancester is unlinked
- if (in->dn_set.empty()) {
- return;
- }
-
- Dentry *dn = in->get_first_parent();
-
-
- if (!dn) {
- // look it up
- ldout(cct, 10) << "getcwd looking up parent for " << *in << dendl;
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LOOKUPNAME);
- filepath path(in->ino);
- req->set_filepath(path);
- req->set_inode(in);
- int res = make_request(req, perms);
- if (res < 0)
- break;
-
- // start over
- path = filepath();
- in = cwd.get();
- continue;
- }
- path.push_front_dentry(dn->name);
- in = dn->dir->parent_inode;
- }
- dir = "/";
- dir += path.get_path();
-}
-
-void Client::getcwd(string& dir, const UserPerm& perms)
-{
- Mutex::Locker l(client_lock);
- if (!unmounting)
- _getcwd(dir, perms);
-}
-
-int Client::statfs(const char *path, struct statvfs *stbuf,
- const UserPerm& perms)
-{
- Mutex::Locker l(client_lock);
- tout(cct) << "statfs" << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- ceph_statfs stats;
- C_SaferCond cond;
-
- const vector<int64_t> &data_pools = mdsmap->get_data_pools();
- if (data_pools.size() == 1) {
- objecter->get_fs_stats(stats, data_pools[0], &cond);
- } else {
- objecter->get_fs_stats(stats, boost::optional<int64_t>(), &cond);
- }
-
- client_lock.Unlock();
- int rval = cond.wait();
- client_lock.Lock();
-
- if (rval < 0) {
- ldout(cct, 1) << "underlying call to statfs returned error: "
- << cpp_strerror(rval)
- << dendl;
- return rval;
- }
-
- memset(stbuf, 0, sizeof(*stbuf));
-
- /*
- * we're going to set a block size of 4MB so we can represent larger
- * FSes without overflowing. Additionally convert the space
- * measurements from KB to bytes while making them in terms of
- * blocks. We use 4MB only because it is big enough, and because it
- * actually *is* the (ceph) default block size.
- */
- const int CEPH_BLOCK_SHIFT = 22;
- stbuf->f_frsize = 1 << CEPH_BLOCK_SHIFT;
- stbuf->f_bsize = 1 << CEPH_BLOCK_SHIFT;
- stbuf->f_files = stats.num_objects;
- stbuf->f_ffree = -1;
- stbuf->f_favail = -1;
- stbuf->f_fsid = -1; // ??
- stbuf->f_flag = 0; // ??
- stbuf->f_namemax = NAME_MAX;
-
- // Usually quota_root will == root_ancestor, but if the mount root has no
- // quota but we can see a parent of it that does have a quota, we'll
- // respect that one instead.
- assert(root != nullptr);
- Inode *quota_root = root->quota.is_enable() ? root : get_quota_root(root, perms);
-
- // get_quota_root should always give us something
- // because client quotas are always enabled
- assert(quota_root != nullptr);
-
- if (quota_root && cct->_conf->client_quota_df && quota_root->quota.max_bytes) {
-
- // Skip the getattr if any sessions are stale, as we don't want to
- // block `df` if this client has e.g. been evicted, or if the MDS cluster
- // is unhealthy.
- if (!_any_stale_sessions()) {
- int r = _getattr(quota_root, 0, perms, true);
- if (r != 0) {
- // Ignore return value: error getting latest inode metadata is not a good
- // reason to break "df".
- lderr(cct) << "Error in getattr on quota root 0x"
- << std::hex << quota_root->ino << std::dec
- << " statfs result may be outdated" << dendl;
- }
- }
-
- // Special case: if there is a size quota set on the Inode acting
- // as the root for this client mount, then report the quota status
- // as the filesystem statistics.
- const fsblkcnt_t total = quota_root->quota.max_bytes >> CEPH_BLOCK_SHIFT;
- const fsblkcnt_t used = quota_root->rstat.rbytes >> CEPH_BLOCK_SHIFT;
- // It is possible for a quota to be exceeded: arithmetic here must
- // handle case where used > total.
- const fsblkcnt_t free = total > used ? total - used : 0;
-
- stbuf->f_blocks = total;
- stbuf->f_bfree = free;
- stbuf->f_bavail = free;
- } else {
- // General case: report the cluster statistics returned from RADOS. Because
- // multiple pools may be used without one filesystem namespace via
- // layouts, this is the most correct thing we can do.
- stbuf->f_blocks = stats.kb >> (CEPH_BLOCK_SHIFT - 10);
- stbuf->f_bfree = stats.kb_avail >> (CEPH_BLOCK_SHIFT - 10);
- stbuf->f_bavail = stats.kb_avail >> (CEPH_BLOCK_SHIFT - 10);
- }
-
- return rval;
-}
-
-int Client::_do_filelock(Inode *in, Fh *fh, int lock_type, int op, int sleep,
- struct flock *fl, uint64_t owner, bool removing)
-{
- ldout(cct, 10) << "_do_filelock ino " << in->ino
- << (lock_type == CEPH_LOCK_FCNTL ? " fcntl" : " flock")
- << " type " << fl->l_type << " owner " << owner
- << " " << fl->l_start << "~" << fl->l_len << dendl;
-
- int lock_cmd;
- if (F_RDLCK == fl->l_type)
- lock_cmd = CEPH_LOCK_SHARED;
- else if (F_WRLCK == fl->l_type)
- lock_cmd = CEPH_LOCK_EXCL;
- else if (F_UNLCK == fl->l_type)
- lock_cmd = CEPH_LOCK_UNLOCK;
- else
- return -EIO;
-
- if (op != CEPH_MDS_OP_SETFILELOCK || lock_cmd == CEPH_LOCK_UNLOCK)
- sleep = 0;
-
- /*
- * Set the most significant bit, so that MDS knows the 'owner'
- * is sufficient to identify the owner of lock. (old code uses
- * both 'owner' and 'pid')
- */
- owner |= (1ULL << 63);
-
- MetaRequest *req = new MetaRequest(op);
- filepath path;
- in->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->set_inode(in);
-
- req->head.args.filelock_change.rule = lock_type;
- req->head.args.filelock_change.type = lock_cmd;
- req->head.args.filelock_change.owner = owner;
- req->head.args.filelock_change.pid = fl->l_pid;
- req->head.args.filelock_change.start = fl->l_start;
- req->head.args.filelock_change.length = fl->l_len;
- req->head.args.filelock_change.wait = sleep;
-
- int ret;
- bufferlist bl;
-
- if (sleep && switch_interrupt_cb) {
- // enable interrupt
- switch_interrupt_cb(callback_handle, req->get());
- ret = make_request(req, fh->actor_perms, NULL, NULL, -1, &bl);
- // disable interrupt
- switch_interrupt_cb(callback_handle, NULL);
- if (ret == 0 && req->aborted()) {
- // effect of this lock request has been revoked by the 'lock intr' request
- ret = req->get_abort_code();
- }
- put_request(req);
- } else {
- ret = make_request(req, fh->actor_perms, NULL, NULL, -1, &bl);
- }
-
- if (ret == 0) {
- if (op == CEPH_MDS_OP_GETFILELOCK) {
- ceph_filelock filelock;
- bufferlist::iterator p = bl.begin();
- ::decode(filelock, p);
-
- if (CEPH_LOCK_SHARED == filelock.type)
- fl->l_type = F_RDLCK;
- else if (CEPH_LOCK_EXCL == filelock.type)
- fl->l_type = F_WRLCK;
- else
- fl->l_type = F_UNLCK;
-
- fl->l_whence = SEEK_SET;
- fl->l_start = filelock.start;
- fl->l_len = filelock.length;
- fl->l_pid = filelock.pid;
- } else if (op == CEPH_MDS_OP_SETFILELOCK) {
- ceph_lock_state_t *lock_state;
- if (lock_type == CEPH_LOCK_FCNTL) {
- if (!in->fcntl_locks)
- in->fcntl_locks = new ceph_lock_state_t(cct, CEPH_LOCK_FCNTL);
- lock_state = in->fcntl_locks;
- } else if (lock_type == CEPH_LOCK_FLOCK) {
- if (!in->flock_locks)
- in->flock_locks = new ceph_lock_state_t(cct, CEPH_LOCK_FLOCK);
- lock_state = in->flock_locks;
- } else {
- ceph_abort();
- return -EINVAL;
- }
- _update_lock_state(fl, owner, lock_state);
-
- if (!removing) {
- if (lock_type == CEPH_LOCK_FCNTL) {
- if (!fh->fcntl_locks)
- fh->fcntl_locks = new ceph_lock_state_t(cct, CEPH_LOCK_FCNTL);
- lock_state = fh->fcntl_locks;
- } else {
- if (!fh->flock_locks)
- fh->flock_locks = new ceph_lock_state_t(cct, CEPH_LOCK_FLOCK);
- lock_state = fh->flock_locks;
- }
- _update_lock_state(fl, owner, lock_state);
- }
- } else
- ceph_abort();
- }
- return ret;
-}
-
-int Client::_interrupt_filelock(MetaRequest *req)
-{
- // Set abort code, but do not kick. The abort code prevents the request
- // from being re-sent.
- req->abort(-EINTR);
- if (req->mds < 0)
- return 0; // haven't sent the request
-
- Inode *in = req->inode();
-
- int lock_type;
- if (req->head.args.filelock_change.rule == CEPH_LOCK_FLOCK)
- lock_type = CEPH_LOCK_FLOCK_INTR;
- else if (req->head.args.filelock_change.rule == CEPH_LOCK_FCNTL)
- lock_type = CEPH_LOCK_FCNTL_INTR;
- else {
- ceph_abort();
- return -EINVAL;
- }
-
- MetaRequest *intr_req = new MetaRequest(CEPH_MDS_OP_SETFILELOCK);
- filepath path;
- in->make_nosnap_relative_path(path);
- intr_req->set_filepath(path);
- intr_req->set_inode(in);
- intr_req->head.args.filelock_change = req->head.args.filelock_change;
- intr_req->head.args.filelock_change.rule = lock_type;
- intr_req->head.args.filelock_change.type = CEPH_LOCK_UNLOCK;
-
- UserPerm perms(req->get_uid(), req->get_gid());
- return make_request(intr_req, perms, NULL, NULL, -1);
-}
-
-void Client::_encode_filelocks(Inode *in, bufferlist& bl)
-{
- if (!in->fcntl_locks && !in->flock_locks)
- return;
-
- unsigned nr_fcntl_locks = in->fcntl_locks ? in->fcntl_locks->held_locks.size() : 0;
- ::encode(nr_fcntl_locks, bl);
- if (nr_fcntl_locks) {
- ceph_lock_state_t* lock_state = in->fcntl_locks;
- for(multimap<uint64_t, ceph_filelock>::iterator p = lock_state->held_locks.begin();
- p != lock_state->held_locks.end();
- ++p)
- ::encode(p->second, bl);
- }
-
- unsigned nr_flock_locks = in->flock_locks ? in->flock_locks->held_locks.size() : 0;
- ::encode(nr_flock_locks, bl);
- if (nr_flock_locks) {
- ceph_lock_state_t* lock_state = in->flock_locks;
- for(multimap<uint64_t, ceph_filelock>::iterator p = lock_state->held_locks.begin();
- p != lock_state->held_locks.end();
- ++p)
- ::encode(p->second, bl);
- }
-
- ldout(cct, 10) << "_encode_filelocks ino " << in->ino << ", " << nr_fcntl_locks
- << " fcntl locks, " << nr_flock_locks << " flock locks" << dendl;
-}
-
-void Client::_release_filelocks(Fh *fh)
-{
- if (!fh->fcntl_locks && !fh->flock_locks)
- return;
-
- Inode *in = fh->inode.get();
- ldout(cct, 10) << "_release_filelocks " << fh << " ino " << in->ino << dendl;
-
- list<pair<int, ceph_filelock> > to_release;
-
- if (fh->fcntl_locks) {
- ceph_lock_state_t* lock_state = fh->fcntl_locks;
- for(multimap<uint64_t, ceph_filelock>::iterator p = lock_state->held_locks.begin();
- p != lock_state->held_locks.end();
- ++p)
- to_release.push_back(pair<int, ceph_filelock>(CEPH_LOCK_FCNTL, p->second));
- delete fh->fcntl_locks;
- }
- if (fh->flock_locks) {
- ceph_lock_state_t* lock_state = fh->flock_locks;
- for(multimap<uint64_t, ceph_filelock>::iterator p = lock_state->held_locks.begin();
- p != lock_state->held_locks.end();
- ++p)
- to_release.push_back(pair<int, ceph_filelock>(CEPH_LOCK_FLOCK, p->second));
- delete fh->flock_locks;
- }
-
- if (to_release.empty())
- return;
-
- struct flock fl;
- memset(&fl, 0, sizeof(fl));
- fl.l_whence = SEEK_SET;
- fl.l_type = F_UNLCK;
-
- for (list<pair<int, ceph_filelock> >::iterator p = to_release.begin();
- p != to_release.end();
- ++p) {
- fl.l_start = p->second.start;
- fl.l_len = p->second.length;
- fl.l_pid = p->second.pid;
- _do_filelock(in, fh, p->first, CEPH_MDS_OP_SETFILELOCK, 0, &fl,
- p->second.owner, true);
- }
-}
-
-void Client::_update_lock_state(struct flock *fl, uint64_t owner,
- ceph_lock_state_t *lock_state)
-{
- int lock_cmd;
- if (F_RDLCK == fl->l_type)
- lock_cmd = CEPH_LOCK_SHARED;
- else if (F_WRLCK == fl->l_type)
- lock_cmd = CEPH_LOCK_EXCL;
- else
- lock_cmd = CEPH_LOCK_UNLOCK;;
-
- ceph_filelock filelock;
- filelock.start = fl->l_start;
- filelock.length = fl->l_len;
- filelock.client = 0;
- // see comment in _do_filelock()
- filelock.owner = owner | (1ULL << 63);
- filelock.pid = fl->l_pid;
- filelock.type = lock_cmd;
-
- if (filelock.type == CEPH_LOCK_UNLOCK) {
- list<ceph_filelock> activated_locks;
- lock_state->remove_lock(filelock, activated_locks);
- } else {
- bool r = lock_state->add_lock(filelock, false, false, NULL);
- assert(r);
- }
-}
-
-int Client::_getlk(Fh *fh, struct flock *fl, uint64_t owner)
-{
- Inode *in = fh->inode.get();
- ldout(cct, 10) << "_getlk " << fh << " ino " << in->ino << dendl;
- int ret = _do_filelock(in, fh, CEPH_LOCK_FCNTL, CEPH_MDS_OP_GETFILELOCK, 0, fl, owner);
- return ret;
-}
-
-int Client::_setlk(Fh *fh, struct flock *fl, uint64_t owner, int sleep)
-{
- Inode *in = fh->inode.get();
- ldout(cct, 10) << "_setlk " << fh << " ino " << in->ino << dendl;
- int ret = _do_filelock(in, fh, CEPH_LOCK_FCNTL, CEPH_MDS_OP_SETFILELOCK, sleep, fl, owner);
- ldout(cct, 10) << "_setlk " << fh << " ino " << in->ino << " result=" << ret << dendl;
- return ret;
-}
-
-int Client::_flock(Fh *fh, int cmd, uint64_t owner)
-{
- Inode *in = fh->inode.get();
- ldout(cct, 10) << "_flock " << fh << " ino " << in->ino << dendl;
-
- int sleep = !(cmd & LOCK_NB);
- cmd &= ~LOCK_NB;
-
- int type;
- switch (cmd) {
- case LOCK_SH:
- type = F_RDLCK;
- break;
- case LOCK_EX:
- type = F_WRLCK;
- break;
- case LOCK_UN:
- type = F_UNLCK;
- break;
- default:
- return -EINVAL;
- }
-
- struct flock fl;
- memset(&fl, 0, sizeof(fl));
- fl.l_type = type;
- fl.l_whence = SEEK_SET;
-
- int ret = _do_filelock(in, fh, CEPH_LOCK_FLOCK, CEPH_MDS_OP_SETFILELOCK, sleep, &fl, owner);
- ldout(cct, 10) << "_flock " << fh << " ino " << in->ino << " result=" << ret << dendl;
- return ret;
-}
-
-int Client::ll_statfs(Inode *in, struct statvfs *stbuf, const UserPerm& perms)
-{
- /* Since the only thing this does is wrap a call to statfs, and
- statfs takes a lock, it doesn't seem we have a need to split it
- out. */
- return statfs(0, stbuf, perms);
-}
-
-void Client::ll_register_callbacks(struct client_callback_args *args)
-{
- if (!args)
- return;
- Mutex::Locker l(client_lock);
- ldout(cct, 10) << "ll_register_callbacks cb " << args->handle
- << " invalidate_ino_cb " << args->ino_cb
- << " invalidate_dentry_cb " << args->dentry_cb
- << " getgroups_cb" << args->getgroups_cb
- << " switch_interrupt_cb " << args->switch_intr_cb
- << " remount_cb " << args->remount_cb
- << dendl;
- callback_handle = args->handle;
- if (args->ino_cb) {
- ino_invalidate_cb = args->ino_cb;
- async_ino_invalidator.start();
- }
- if (args->dentry_cb) {
- dentry_invalidate_cb = args->dentry_cb;
- async_dentry_invalidator.start();
- }
- if (args->switch_intr_cb) {
- switch_interrupt_cb = args->switch_intr_cb;
- interrupt_finisher.start();
- }
- if (args->remount_cb) {
- remount_cb = args->remount_cb;
- remount_finisher.start();
- }
- getgroups_cb = args->getgroups_cb;
- umask_cb = args->umask_cb;
-}
-
-int Client::test_dentry_handling(bool can_invalidate)
-{
- int r = 0;
-
- can_invalidate_dentries = can_invalidate;
-
- if (can_invalidate_dentries) {
- assert(dentry_invalidate_cb);
- ldout(cct, 1) << "using dentry_invalidate_cb" << dendl;
- } else if (remount_cb) {
- ldout(cct, 1) << "using remount_cb" << dendl;
- int s = remount_cb(callback_handle);
- if (s) {
- lderr(cct) << "Failed to invoke remount, needed to ensure kernel dcache consistency"
- << dendl;
- }
- if (cct->_conf->client_die_on_failed_remount) {
- require_remount = true;
- r = s;
- }
- } else {
- lderr(cct) << "no method to invalidate kernel dentry cache; expect issues!" << dendl;
- if (cct->_conf->client_die_on_failed_remount)
- ceph_abort();
- }
- return r;
-}
-
-int Client::_sync_fs()
-{
- ldout(cct, 10) << "_sync_fs" << dendl;
-
- // flush file data
- Mutex lock("Client::_fsync::lock");
- Cond cond;
- bool flush_done = false;
- if (cct->_conf->client_oc)
- objectcacher->flush_all(new C_SafeCond(&lock, &cond, &flush_done));
- else
- flush_done = true;
-
- // flush caps
- flush_caps_sync();
- ceph_tid_t flush_tid = last_flush_tid;
-
- // wait for unsafe mds requests
- wait_unsafe_requests();
-
- wait_sync_caps(flush_tid);
-
- if (!flush_done) {
- client_lock.Unlock();
- lock.Lock();
- ldout(cct, 15) << "waiting on data to flush" << dendl;
- while (!flush_done)
- cond.Wait(lock);
- lock.Unlock();
- client_lock.Lock();
- }
-
- return 0;
-}
-
-int Client::sync_fs()
-{
- Mutex::Locker l(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- return _sync_fs();
-}
-
-int64_t Client::drop_caches()
-{
- Mutex::Locker l(client_lock);
- return objectcacher->release_all();
-}
-
-
-int Client::lazyio_propogate(int fd, loff_t offset, size_t count)
-{
- Mutex::Locker l(client_lock);
- ldout(cct, 3) << "op: client->lazyio_propogate(" << fd
- << ", " << offset << ", " << count << ")" << dendl;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-
- // for now
- _fsync(f, true);
-
- return 0;
-}
-
-int Client::lazyio_synchronize(int fd, loff_t offset, size_t count)
-{
- Mutex::Locker l(client_lock);
- ldout(cct, 3) << "op: client->lazyio_synchronize(" << fd
- << ", " << offset << ", " << count << ")" << dendl;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- Inode *in = f->inode.get();
-
- _fsync(f, true);
- if (_release(in))
- check_caps(in, 0);
- return 0;
-}
-
-
-// =============================
-// snaps
-
-int Client::mksnap(const char *relpath, const char *name, const UserPerm& perm)
-{
- Mutex::Locker l(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perm);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- r = may_create(in.get(), perm);
- if (r < 0)
- return r;
- }
- Inode *snapdir = open_snapdir(in.get());
- return _mkdir(snapdir, name, 0, perm);
-}
-
-int Client::rmsnap(const char *relpath, const char *name, const UserPerm& perms)
-{
- Mutex::Locker l(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms);
- if (r < 0)
- return r;
- if (cct->_conf->client_permissions) {
- r = may_delete(in.get(), NULL, perms);
- if (r < 0)
- return r;
- }
- Inode *snapdir = open_snapdir(in.get());
- return _rmdir(snapdir, name, perms);
-}
-
-// =============================
-// expose caps
-
-int Client::get_caps_issued(int fd) {
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
-
- return f->inode->caps_issued();
-}
-
-int Client::get_caps_issued(const char *path, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath p(path);
- InodeRef in;
- int r = path_walk(p, &in, perms, true);
- if (r < 0)
- return r;
- return in->caps_issued();
-}
-
-// =========================================
-// low level
-
-Inode *Client::open_snapdir(Inode *diri)
-{
- Inode *in;
- vinodeno_t vino(diri->ino, CEPH_SNAPDIR);
- if (!inode_map.count(vino)) {
- in = new Inode(this, vino, &diri->layout);
-
- in->ino = diri->ino;
- in->snapid = CEPH_SNAPDIR;
- in->mode = diri->mode;
- in->uid = diri->uid;
- in->gid = diri->gid;
- in->mtime = diri->mtime;
- in->ctime = diri->ctime;
- in->btime = diri->btime;
- in->size = diri->size;
- in->change_attr = diri->change_attr;
-
- in->dirfragtree.clear();
- in->snapdir_parent = diri;
- diri->flags |= I_SNAPDIR_OPEN;
- inode_map[vino] = in;
- if (use_faked_inos())
- _assign_faked_ino(in);
- ldout(cct, 10) << "open_snapdir created snapshot inode " << *in << dendl;
- } else {
- in = inode_map[vino];
- ldout(cct, 10) << "open_snapdir had snapshot inode " << *in << dendl;
- }
- return in;
-}
-
-int Client::ll_lookup(Inode *parent, const char *name, struct stat *attr,
- Inode **out, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- vinodeno_t vparent = _get_vino(parent);
- ldout(cct, 3) << "ll_lookup " << vparent << " " << name << dendl;
- tout(cct) << "ll_lookup" << std::endl;
- tout(cct) << name << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- int r = 0;
- if (!cct->_conf->fuse_default_permissions) {
- r = may_lookup(parent, perms);
- if (r < 0)
- return r;
- }
-
- string dname(name);
- InodeRef in;
-
- r = _lookup(parent, dname, CEPH_STAT_CAP_INODE_ALL, &in, perms);
- if (r < 0) {
- attr->st_ino = 0;
- goto out;
- }
-
- assert(in);
- fill_stat(in, attr);
- _ll_get(in.get());
-
- out:
- ldout(cct, 3) << "ll_lookup " << vparent << " " << name
- << " -> " << r << " (" << hex << attr->st_ino << dec << ")" << dendl;
- tout(cct) << attr->st_ino << std::endl;
- *out = in.get();
- return r;
-}
-
-int Client::ll_lookupx(Inode *parent, const char *name, Inode **out,
- struct ceph_statx *stx, unsigned want, unsigned flags,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- vinodeno_t vparent = _get_vino(parent);
- ldout(cct, 3) << "ll_lookupx " << vparent << " " << name << dendl;
- tout(cct) << "ll_lookupx" << std::endl;
- tout(cct) << name << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- int r = 0;
- if (!cct->_conf->fuse_default_permissions) {
- r = may_lookup(parent, perms);
- if (r < 0)
- return r;
- }
-
- string dname(name);
- InodeRef in;
-
- unsigned mask = statx_to_mask(flags, want);
- r = _lookup(parent, dname, mask, &in, perms);
- if (r < 0) {
- stx->stx_ino = 0;
- stx->stx_mask = 0;
- } else {
- assert(in);
- fill_statx(in, mask, stx);
- _ll_get(in.get());
- }
-
- ldout(cct, 3) << "ll_lookupx " << vparent << " " << name
- << " -> " << r << " (" << hex << stx->stx_ino << dec << ")" << dendl;
- tout(cct) << stx->stx_ino << std::endl;
- *out = in.get();
- return r;
-}
-
-int Client::ll_walk(const char* name, Inode **out, struct ceph_statx *stx,
- unsigned int want, unsigned int flags, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath fp(name, 0);
- InodeRef in;
- int rc;
- unsigned mask = statx_to_mask(flags, want);
-
- ldout(cct, 3) << "ll_walk" << name << dendl;
- tout(cct) << "ll_walk" << std::endl;
- tout(cct) << name << std::endl;
-
- rc = path_walk(fp, &in, perms, !(flags & AT_SYMLINK_NOFOLLOW), mask);
- if (rc < 0) {
- /* zero out mask, just in case... */
- stx->stx_mask = 0;
- stx->stx_ino = 0;
- *out = NULL;
- return rc;
- } else {
- assert(in);
- fill_statx(in, mask, stx);
- _ll_get(in.get());
- *out = in.get();
- return 0;
- }
-}
-
-void Client::_ll_get(Inode *in)
-{
- if (in->ll_ref == 0) {
- in->get();
- if (in->is_dir() && !in->dn_set.empty()) {
- assert(in->dn_set.size() == 1); // dirs can't be hard-linked
- in->get_first_parent()->get(); // pin dentry
- }
- }
- in->ll_get();
- ldout(cct, 20) << "_ll_get " << in << " " << in->ino << " -> " << in->ll_ref << dendl;
-}
-
-int Client::_ll_put(Inode *in, int num)
-{
- in->ll_put(num);
- ldout(cct, 20) << "_ll_put " << in << " " << in->ino << " " << num << " -> " << in->ll_ref << dendl;
- if (in->ll_ref == 0) {
- if (in->is_dir() && !in->dn_set.empty()) {
- assert(in->dn_set.size() == 1); // dirs can't be hard-linked
- in->get_first_parent()->put(); // unpin dentry
- }
- put_inode(in);
- return 0;
- } else {
- return in->ll_ref;
- }
-}
-
-void Client::_ll_drop_pins()
-{
- ldout(cct, 10) << "_ll_drop_pins" << dendl;
- ceph::unordered_map<vinodeno_t, Inode*>::iterator next;
- for (ceph::unordered_map<vinodeno_t, Inode*>::iterator it = inode_map.begin();
- it != inode_map.end();
- it = next) {
- Inode *in = it->second;
- next = it;
- ++next;
- if (in->ll_ref)
- _ll_put(in, in->ll_ref);
- }
-}
-
-bool Client::ll_forget(Inode *in, int count)
-{
- Mutex::Locker lock(client_lock);
- inodeno_t ino = _get_inodeno(in);
-
- ldout(cct, 3) << "ll_forget " << ino << " " << count << dendl;
- tout(cct) << "ll_forget" << std::endl;
- tout(cct) << ino.val << std::endl;
- tout(cct) << count << std::endl;
-
- // Ignore forget if we're no longer mounted
- if (unmounting)
- return true;
-
- if (ino == 1) return true; // ignore forget on root.
-
- bool last = false;
- if (in->ll_ref < count) {
- ldout(cct, 1) << "WARNING: ll_forget on " << ino << " " << count
- << ", which only has ll_ref=" << in->ll_ref << dendl;
- _ll_put(in, in->ll_ref);
- last = true;
- } else {
- if (_ll_put(in, count) == 0)
- last = true;
- }
-
- return last;
-}
-
-bool Client::ll_put(Inode *in)
-{
- /* ll_forget already takes the lock */
- return ll_forget(in, 1);
-}
-
-snapid_t Client::ll_get_snapid(Inode *in)
-{
- Mutex::Locker lock(client_lock);
- return in->snapid;
-}
-
-Inode *Client::ll_get_inode(ino_t ino)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return NULL;
-
- vinodeno_t vino = _map_faked_ino(ino);
- unordered_map<vinodeno_t,Inode*>::iterator p = inode_map.find(vino);
- if (p == inode_map.end())
- return NULL;
- Inode *in = p->second;
- _ll_get(in);
- return in;
-}
-
-Inode *Client::ll_get_inode(vinodeno_t vino)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return NULL;
-
- unordered_map<vinodeno_t,Inode*>::iterator p = inode_map.find(vino);
- if (p == inode_map.end())
- return NULL;
- Inode *in = p->second;
- _ll_get(in);
- return in;
-}
-
-int Client::_ll_getattr(Inode *in, int caps, const UserPerm& perms)
-{
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_getattr " << vino << dendl;
- tout(cct) << "ll_getattr" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
-
- if (vino.snapid < CEPH_NOSNAP)
- return 0;
- else
- return _getattr(in, caps, perms);
-}
-
-int Client::ll_getattr(Inode *in, struct stat *attr, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- int res = _ll_getattr(in, CEPH_STAT_CAP_INODE_ALL, perms);
-
- if (res == 0)
- fill_stat(in, attr);
- ldout(cct, 3) << "ll_getattr " << _get_vino(in) << " = " << res << dendl;
- return res;
-}
-
-int Client::ll_getattrx(Inode *in, struct ceph_statx *stx, unsigned int want,
- unsigned int flags, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- int res = 0;
- unsigned mask = statx_to_mask(flags, want);
-
- if (mask && !in->caps_issued_mask(mask))
- res = _ll_getattr(in, mask, perms);
-
- if (res == 0)
- fill_statx(in, mask, stx);
- ldout(cct, 3) << "ll_getattrx " << _get_vino(in) << " = " << res << dendl;
- return res;
-}
-
-int Client::_ll_setattrx(Inode *in, struct ceph_statx *stx, int mask,
- const UserPerm& perms, InodeRef *inp)
-{
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_setattrx " << vino << " mask " << hex << mask << dec
- << dendl;
- tout(cct) << "ll_setattrx" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << stx->stx_mode << std::endl;
- tout(cct) << stx->stx_uid << std::endl;
- tout(cct) << stx->stx_gid << std::endl;
- tout(cct) << stx->stx_size << std::endl;
- tout(cct) << stx->stx_mtime << std::endl;
- tout(cct) << stx->stx_atime << std::endl;
- tout(cct) << stx->stx_btime << std::endl;
- tout(cct) << mask << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int res = may_setattr(in, stx, mask, perms);
- if (res < 0)
- return res;
- }
-
- mask &= ~(CEPH_SETATTR_MTIME_NOW | CEPH_SETATTR_ATIME_NOW);
-
- return __setattrx(in, stx, mask, perms, inp);
-}
-
-int Client::ll_setattrx(Inode *in, struct ceph_statx *stx, int mask,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef target(in);
- int res = _ll_setattrx(in, stx, mask, perms, &target);
- if (res == 0) {
- assert(in == target.get());
- fill_statx(in, in->caps_issued(), stx);
- }
-
- ldout(cct, 3) << "ll_setattrx " << _get_vino(in) << " = " << res << dendl;
- return res;
-}
-
-int Client::ll_setattr(Inode *in, struct stat *attr, int mask,
- const UserPerm& perms)
-{
- struct ceph_statx stx;
- stat_to_statx(attr, &stx);
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef target(in);
- int res = _ll_setattrx(in, &stx, mask, perms, &target);
- if (res == 0) {
- assert(in == target.get());
- fill_stat(in, attr);
- }
-
- ldout(cct, 3) << "ll_setattr " << _get_vino(in) << " = " << res << dendl;
- return res;
-}
-
-
-// ----------
-// xattrs
-
-int Client::getxattr(const char *path, const char *name, void *value, size_t size,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, true, CEPH_STAT_CAP_XATTR);
- if (r < 0)
- return r;
- return _getxattr(in, name, value, size, perms);
-}
-
-int Client::lgetxattr(const char *path, const char *name, void *value, size_t size,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, false, CEPH_STAT_CAP_XATTR);
- if (r < 0)
- return r;
- return _getxattr(in, name, value, size, perms);
-}
-
-int Client::fgetxattr(int fd, const char *name, void *value, size_t size,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- return _getxattr(f->inode, name, value, size, perms);
-}
-
-int Client::listxattr(const char *path, char *list, size_t size,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, true, CEPH_STAT_CAP_XATTR);
- if (r < 0)
- return r;
- return Client::_listxattr(in.get(), list, size, perms);
-}
-
-int Client::llistxattr(const char *path, char *list, size_t size,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, false, CEPH_STAT_CAP_XATTR);
- if (r < 0)
- return r;
- return Client::_listxattr(in.get(), list, size, perms);
-}
-
-int Client::flistxattr(int fd, char *list, size_t size, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- return Client::_listxattr(f->inode.get(), list, size, perms);
-}
-
-int Client::removexattr(const char *path, const char *name,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, true);
- if (r < 0)
- return r;
- return _removexattr(in, name, perms);
-}
-
-int Client::lremovexattr(const char *path, const char *name,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, false);
- if (r < 0)
- return r;
- return _removexattr(in, name, perms);
-}
-
-int Client::fremovexattr(int fd, const char *name, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- return _removexattr(f->inode, name, perms);
-}
-
-int Client::setxattr(const char *path, const char *name, const void *value,
- size_t size, int flags, const UserPerm& perms)
-{
- _setxattr_maybe_wait_for_osdmap(name, value, size);
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, true);
- if (r < 0)
- return r;
- return _setxattr(in, name, value, size, flags, perms);
-}
-
-int Client::lsetxattr(const char *path, const char *name, const void *value,
- size_t size, int flags, const UserPerm& perms)
-{
- _setxattr_maybe_wait_for_osdmap(name, value, size);
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- InodeRef in;
- int r = Client::path_walk(path, &in, perms, false);
- if (r < 0)
- return r;
- return _setxattr(in, name, value, size, flags, perms);
-}
-
-int Client::fsetxattr(int fd, const char *name, const void *value, size_t size,
- int flags, const UserPerm& perms)
-{
- _setxattr_maybe_wait_for_osdmap(name, value, size);
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- return _setxattr(f->inode, name, value, size, flags, perms);
-}
-
-int Client::_getxattr(Inode *in, const char *name, void *value, size_t size,
- const UserPerm& perms)
-{
- int r;
-
- const VXattr *vxattr = _match_vxattr(in, name);
- if (vxattr) {
- r = -ENODATA;
-
- // Do a force getattr to get the latest quota before returning
- // a value to userspace.
- r = _getattr(in, 0, perms, true);
- if (r != 0) {
- // Error from getattr!
- return r;
- }
-
- // call pointer-to-member function
- char buf[256];
- if (!(vxattr->exists_cb && !(this->*(vxattr->exists_cb))(in))) {
- r = (this->*(vxattr->getxattr_cb))(in, buf, sizeof(buf));
- } else {
- r = -ENODATA;
- }
-
- if (size != 0) {
- if (r > (int)size) {
- r = -ERANGE;
- } else if (r > 0) {
- memcpy(value, buf, r);
- }
- }
- goto out;
- }
-
- if (acl_type == NO_ACL && !strncmp(name, "system.", 7)) {
- r = -EOPNOTSUPP;
- goto out;
- }
-
- r = _getattr(in, CEPH_STAT_CAP_XATTR, perms, in->xattr_version == 0);
- if (r == 0) {
- string n(name);
- r = -ENODATA;
- if (in->xattrs.count(n)) {
- r = in->xattrs[n].length();
- if (r > 0 && size != 0) {
- if (size >= (unsigned)r)
- memcpy(value, in->xattrs[n].c_str(), r);
- else
- r = -ERANGE;
- }
- }
- }
- out:
- ldout(cct, 3) << "_getxattr(" << in->ino << ", \"" << name << "\", " << size << ") = " << r << dendl;
- return r;
-}
-
-int Client::_getxattr(InodeRef &in, const char *name, void *value, size_t size,
- const UserPerm& perms)
-{
- if (cct->_conf->client_permissions) {
- int r = xattr_permission(in.get(), name, MAY_READ, perms);
- if (r < 0)
- return r;
- }
- return _getxattr(in.get(), name, value, size, perms);
-}
-
-int Client::ll_getxattr(Inode *in, const char *name, void *value,
- size_t size, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_getxattr " << vino << " " << name << " size " << size << dendl;
- tout(cct) << "ll_getxattr" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << name << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = xattr_permission(in, name, MAY_READ, perms);
- if (r < 0)
- return r;
- }
-
- return _getxattr(in, name, value, size, perms);
-}
-
-int Client::_listxattr(Inode *in, char *name, size_t size,
- const UserPerm& perms)
-{
- int r = _getattr(in, CEPH_STAT_CAP_XATTR, perms, in->xattr_version == 0);
- if (r == 0) {
- for (map<string,bufferptr>::iterator p = in->xattrs.begin();
- p != in->xattrs.end();
- ++p)
- r += p->first.length() + 1;
-
- const VXattr *vxattrs = _get_vxattrs(in);
- r += _vxattrs_name_size(vxattrs);
-
- if (size != 0) {
- if (size >= (unsigned)r) {
- for (map<string,bufferptr>::iterator p = in->xattrs.begin();
- p != in->xattrs.end();
- ++p) {
- memcpy(name, p->first.c_str(), p->first.length());
- name += p->first.length();
- *name = '\0';
- name++;
- }
- if (vxattrs) {
- for (int i = 0; !vxattrs[i].name.empty(); i++) {
- const VXattr& vxattr = vxattrs[i];
- if (vxattr.hidden)
- continue;
- // call pointer-to-member function
- if(vxattr.exists_cb && !(this->*(vxattr.exists_cb))(in))
- continue;
- memcpy(name, vxattr.name.c_str(), vxattr.name.length());
- name += vxattr.name.length();
- *name = '\0';
- name++;
- }
- }
- } else
- r = -ERANGE;
- }
- }
- ldout(cct, 3) << "_listxattr(" << in->ino << ", " << size << ") = " << r << dendl;
- return r;
-}
-
-int Client::ll_listxattr(Inode *in, char *names, size_t size,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_listxattr " << vino << " size " << size << dendl;
- tout(cct) << "ll_listxattr" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << size << std::endl;
-
- return _listxattr(in, names, size, perms);
-}
-
-int Client::_do_setxattr(Inode *in, const char *name, const void *value,
- size_t size, int flags, const UserPerm& perms)
-{
-
- int xattr_flags = 0;
- if (!value)
- xattr_flags |= CEPH_XATTR_REMOVE;
- if (flags & XATTR_CREATE)
- xattr_flags |= CEPH_XATTR_CREATE;
- if (flags & XATTR_REPLACE)
- xattr_flags |= CEPH_XATTR_REPLACE;
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_SETXATTR);
- filepath path;
- in->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->set_string2(name);
- req->set_inode(in);
- req->head.args.setxattr.flags = xattr_flags;
-
- bufferlist bl;
- bl.append((const char*)value, size);
- req->set_data(bl);
-
- int res = make_request(req, perms);
-
- trim_cache();
- ldout(cct, 3) << "_setxattr(" << in->ino << ", \"" << name << "\") = " <<
- res << dendl;
- return res;
-}
-
-int Client::_setxattr(Inode *in, const char *name, const void *value,
- size_t size, int flags, const UserPerm& perms)
-{
- if (in->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
-
- bool posix_acl_xattr = false;
- if (acl_type == POSIX_ACL)
- posix_acl_xattr = !strncmp(name, "system.", 7);
-
- if (strncmp(name, "user.", 5) &&
- strncmp(name, "security.", 9) &&
- strncmp(name, "trusted.", 8) &&
- strncmp(name, "ceph.", 5) &&
- !posix_acl_xattr)
- return -EOPNOTSUPP;
-
- if (posix_acl_xattr) {
- if (!strcmp(name, ACL_EA_ACCESS)) {
- mode_t new_mode = in->mode;
- if (value) {
- int ret = posix_acl_equiv_mode(value, size, &new_mode);
- if (ret < 0)
- return ret;
- if (ret == 0) {
- value = NULL;
- size = 0;
- }
- if (new_mode != in->mode) {
- struct ceph_statx stx;
- stx.stx_mode = new_mode;
- ret = _do_setattr(in, &stx, CEPH_SETATTR_MODE, perms, NULL);
- if (ret < 0)
- return ret;
- }
- }
- } else if (!strcmp(name, ACL_EA_DEFAULT)) {
- if (value) {
- if (!S_ISDIR(in->mode))
- return -EACCES;
- int ret = posix_acl_check(value, size);
- if (ret < 0)
- return -EINVAL;
- if (ret == 0) {
- value = NULL;
- size = 0;
- }
- }
- } else {
- return -EOPNOTSUPP;
- }
- } else {
- const VXattr *vxattr = _match_vxattr(in, name);
- if (vxattr && vxattr->readonly)
- return -EOPNOTSUPP;
- }
-
- return _do_setxattr(in, name, value, size, flags, perms);
-}
-
-int Client::_setxattr(InodeRef &in, const char *name, const void *value,
- size_t size, int flags, const UserPerm& perms)
-{
- if (cct->_conf->client_permissions) {
- int r = xattr_permission(in.get(), name, MAY_WRITE, perms);
- if (r < 0)
- return r;
- }
- return _setxattr(in.get(), name, value, size, flags, perms);
-}
-
-int Client::_setxattr_check_data_pool(string& name, string& value, const OSDMap *osdmap)
-{
- string tmp;
- if (name == "layout") {
- string::iterator begin = value.begin();
- string::iterator end = value.end();
- keys_and_values<string::iterator> p; // create instance of parser
- std::map<string, string> m; // map to receive results
- if (!qi::parse(begin, end, p, m)) { // returns true if successful
- return -EINVAL;
- }
- if (begin != end)
- return -EINVAL;
- for (map<string,string>::iterator q = m.begin(); q != m.end(); ++q) {
- if (q->first == "pool") {
- tmp = q->second;
- break;
- }
- }
- } else if (name == "layout.pool") {
- tmp = value;
- }
-
- if (tmp.length()) {
- int64_t pool;
- try {
- pool = boost::lexical_cast<unsigned>(tmp);
- if (!osdmap->have_pg_pool(pool))
- return -ENOENT;
- } catch (boost::bad_lexical_cast const&) {
- pool = osdmap->lookup_pg_pool_name(tmp);
- if (pool < 0) {
- return -ENOENT;
- }
- }
- }
-
- return 0;
-}
-
-void Client::_setxattr_maybe_wait_for_osdmap(const char *name, const void *value, size_t size)
-{
- // For setting pool of layout, MetaRequest need osdmap epoch.
- // There is a race which create a new data pool but client and mds both don't have.
- // Make client got the latest osdmap which make mds quickly judge whether get newer osdmap.
- if (strcmp(name, "ceph.file.layout.pool") == 0 || strcmp(name, "ceph.dir.layout.pool") == 0 ||
- strcmp(name, "ceph.file.layout") == 0 || strcmp(name, "ceph.dir.layout") == 0) {
- string rest(strstr(name, "layout"));
- string v((const char*)value, size);
- int r = objecter->with_osdmap([&](const OSDMap& o) {
- return _setxattr_check_data_pool(rest, v, &o);
- });
-
- if (r == -ENOENT) {
- C_SaferCond ctx;
- objecter->wait_for_latest_osdmap(&ctx);
- ctx.wait();
- }
- }
-}
-
-int Client::ll_setxattr(Inode *in, const char *name, const void *value,
- size_t size, int flags, const UserPerm& perms)
-{
- _setxattr_maybe_wait_for_osdmap(name, value, size);
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_setxattr " << vino << " " << name << " size " << size << dendl;
- tout(cct) << "ll_setxattr" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << name << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = xattr_permission(in, name, MAY_WRITE, perms);
- if (r < 0)
- return r;
- }
- return _setxattr(in, name, value, size, flags, perms);
-}
-
-int Client::_removexattr(Inode *in, const char *name, const UserPerm& perms)
-{
- if (in->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
-
- // same xattrs supported by kernel client
- if (strncmp(name, "user.", 5) &&
- strncmp(name, "system.", 7) &&
- strncmp(name, "security.", 9) &&
- strncmp(name, "trusted.", 8) &&
- strncmp(name, "ceph.", 5))
- return -EOPNOTSUPP;
-
- const VXattr *vxattr = _match_vxattr(in, name);
- if (vxattr && vxattr->readonly)
- return -EOPNOTSUPP;
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_RMXATTR);
- filepath path;
- in->make_nosnap_relative_path(path);
- req->set_filepath(path);
- req->set_filepath2(name);
- req->set_inode(in);
-
- int res = make_request(req, perms);
-
- trim_cache();
- ldout(cct, 3) << "_removexattr(" << in->ino << ", \"" << name << "\") = " << res << dendl;
- return res;
-}
-
-int Client::_removexattr(InodeRef &in, const char *name, const UserPerm& perms)
-{
- if (cct->_conf->client_permissions) {
- int r = xattr_permission(in.get(), name, MAY_WRITE, perms);
- if (r < 0)
- return r;
- }
- return _removexattr(in.get(), name, perms);
-}
-
-int Client::ll_removexattr(Inode *in, const char *name, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_removexattr " << vino << " " << name << dendl;
- tout(cct) << "ll_removexattr" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << name << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = xattr_permission(in, name, MAY_WRITE, perms);
- if (r < 0)
- return r;
- }
-
- return _removexattr(in, name, perms);
-}
-
-bool Client::_vxattrcb_quota_exists(Inode *in)
-{
- return in->quota.is_enable();
-}
-size_t Client::_vxattrcb_quota(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size,
- "max_bytes=%lld max_files=%lld",
- (long long int)in->quota.max_bytes,
- (long long int)in->quota.max_files);
-}
-size_t Client::_vxattrcb_quota_max_bytes(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (long long int)in->quota.max_bytes);
-}
-size_t Client::_vxattrcb_quota_max_files(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (long long int)in->quota.max_files);
-}
-
-bool Client::_vxattrcb_layout_exists(Inode *in)
-{
- return in->layout != file_layout_t();
-}
-size_t Client::_vxattrcb_layout(Inode *in, char *val, size_t size)
-{
- int r = snprintf(val, size,
- "stripe_unit=%lld stripe_count=%lld object_size=%lld pool=",
- (unsigned long long)in->layout.stripe_unit,
- (unsigned long long)in->layout.stripe_count,
- (unsigned long long)in->layout.object_size);
- objecter->with_osdmap([&](const OSDMap& o) {
- if (o.have_pg_pool(in->layout.pool_id))
- r += snprintf(val + r, size - r, "%s",
- o.get_pool_name(in->layout.pool_id).c_str());
- else
- r += snprintf(val + r, size - r, "%" PRIu64,
- (uint64_t)in->layout.pool_id);
- });
- if (in->layout.pool_ns.length())
- r += snprintf(val + r, size - r, " pool_namespace=%s",
- in->layout.pool_ns.c_str());
- return r;
-}
-size_t Client::_vxattrcb_layout_stripe_unit(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->layout.stripe_unit);
-}
-size_t Client::_vxattrcb_layout_stripe_count(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->layout.stripe_count);
-}
-size_t Client::_vxattrcb_layout_object_size(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->layout.object_size);
-}
-size_t Client::_vxattrcb_layout_pool(Inode *in, char *val, size_t size)
-{
- size_t r;
- objecter->with_osdmap([&](const OSDMap& o) {
- if (o.have_pg_pool(in->layout.pool_id))
- r = snprintf(val, size, "%s", o.get_pool_name(
- in->layout.pool_id).c_str());
- else
- r = snprintf(val, size, "%" PRIu64, (uint64_t)in->layout.pool_id);
- });
- return r;
-}
-size_t Client::_vxattrcb_layout_pool_namespace(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%s", in->layout.pool_ns.c_str());
-}
-size_t Client::_vxattrcb_dir_entries(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)(in->dirstat.nfiles + in->dirstat.nsubdirs));
-}
-size_t Client::_vxattrcb_dir_files(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->dirstat.nfiles);
-}
-size_t Client::_vxattrcb_dir_subdirs(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->dirstat.nsubdirs);
-}
-size_t Client::_vxattrcb_dir_rentries(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)(in->rstat.rfiles + in->rstat.rsubdirs));
-}
-size_t Client::_vxattrcb_dir_rfiles(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->rstat.rfiles);
-}
-size_t Client::_vxattrcb_dir_rsubdirs(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->rstat.rsubdirs);
-}
-size_t Client::_vxattrcb_dir_rbytes(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%lld", (unsigned long long)in->rstat.rbytes);
-}
-size_t Client::_vxattrcb_dir_rctime(Inode *in, char *val, size_t size)
-{
- return snprintf(val, size, "%ld.09%ld", (long)in->rstat.rctime.sec(),
- (long)in->rstat.rctime.nsec());
-}
-
-#define CEPH_XATTR_NAME(_type, _name) "ceph." #_type "." #_name
-#define CEPH_XATTR_NAME2(_type, _name, _name2) "ceph." #_type "." #_name "." #_name2
-
-#define XATTR_NAME_CEPH(_type, _name) \
-{ \
- name: CEPH_XATTR_NAME(_type, _name), \
- getxattr_cb: &Client::_vxattrcb_ ## _type ## _ ## _name, \
- readonly: true, \
- hidden: false, \
- exists_cb: NULL, \
-}
-#define XATTR_LAYOUT_FIELD(_type, _name, _field) \
-{ \
- name: CEPH_XATTR_NAME2(_type, _name, _field), \
- getxattr_cb: &Client::_vxattrcb_ ## _name ## _ ## _field, \
- readonly: false, \
- hidden: true, \
- exists_cb: &Client::_vxattrcb_layout_exists, \
-}
-#define XATTR_QUOTA_FIELD(_type, _name) \
-{ \
- name: CEPH_XATTR_NAME(_type, _name), \
- getxattr_cb: &Client::_vxattrcb_ ## _type ## _ ## _name, \
- readonly: false, \
- hidden: true, \
- exists_cb: &Client::_vxattrcb_quota_exists, \
-}
-
-const Client::VXattr Client::_dir_vxattrs[] = {
- {
- name: "ceph.dir.layout",
- getxattr_cb: &Client::_vxattrcb_layout,
- readonly: false,
- hidden: true,
- exists_cb: &Client::_vxattrcb_layout_exists,
- },
- XATTR_LAYOUT_FIELD(dir, layout, stripe_unit),
- XATTR_LAYOUT_FIELD(dir, layout, stripe_count),
- XATTR_LAYOUT_FIELD(dir, layout, object_size),
- XATTR_LAYOUT_FIELD(dir, layout, pool),
- XATTR_LAYOUT_FIELD(dir, layout, pool_namespace),
- XATTR_NAME_CEPH(dir, entries),
- XATTR_NAME_CEPH(dir, files),
- XATTR_NAME_CEPH(dir, subdirs),
- XATTR_NAME_CEPH(dir, rentries),
- XATTR_NAME_CEPH(dir, rfiles),
- XATTR_NAME_CEPH(dir, rsubdirs),
- XATTR_NAME_CEPH(dir, rbytes),
- XATTR_NAME_CEPH(dir, rctime),
- {
- name: "ceph.quota",
- getxattr_cb: &Client::_vxattrcb_quota,
- readonly: false,
- hidden: true,
- exists_cb: &Client::_vxattrcb_quota_exists,
- },
- XATTR_QUOTA_FIELD(quota, max_bytes),
- XATTR_QUOTA_FIELD(quota, max_files),
- { name: "" } /* Required table terminator */
-};
-
-const Client::VXattr Client::_file_vxattrs[] = {
- {
- name: "ceph.file.layout",
- getxattr_cb: &Client::_vxattrcb_layout,
- readonly: false,
- hidden: true,
- exists_cb: &Client::_vxattrcb_layout_exists,
- },
- XATTR_LAYOUT_FIELD(file, layout, stripe_unit),
- XATTR_LAYOUT_FIELD(file, layout, stripe_count),
- XATTR_LAYOUT_FIELD(file, layout, object_size),
- XATTR_LAYOUT_FIELD(file, layout, pool),
- XATTR_LAYOUT_FIELD(file, layout, pool_namespace),
- { name: "" } /* Required table terminator */
-};
-
-const Client::VXattr *Client::_get_vxattrs(Inode *in)
-{
- if (in->is_dir())
- return _dir_vxattrs;
- else if (in->is_file())
- return _file_vxattrs;
- return NULL;
-}
-
-const Client::VXattr *Client::_match_vxattr(Inode *in, const char *name)
-{
- if (strncmp(name, "ceph.", 5) == 0) {
- const VXattr *vxattr = _get_vxattrs(in);
- if (vxattr) {
- while (!vxattr->name.empty()) {
- if (vxattr->name == name)
- return vxattr;
- vxattr++;
- }
- }
- }
- return NULL;
-}
-
-size_t Client::_vxattrs_calcu_name_size(const VXattr *vxattr)
-{
- size_t len = 0;
- while (!vxattr->name.empty()) {
- if (!vxattr->hidden)
- len += vxattr->name.length() + 1;
- vxattr++;
- }
- return len;
-}
-
-int Client::ll_readlink(Inode *in, char *buf, size_t buflen, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_readlink " << vino << dendl;
- tout(cct) << "ll_readlink" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
-
- set<Dentry*>::iterator dn = in->dn_set.begin();
- while (dn != in->dn_set.end()) {
- touch_dn(*dn);
- ++dn;
- }
-
- int r = _readlink(in, buf, buflen); // FIXME: no permission checking!
- ldout(cct, 3) << "ll_readlink " << vino << " = " << r << dendl;
- return r;
-}
-
-int Client::_mknod(Inode *dir, const char *name, mode_t mode, dev_t rdev,
- const UserPerm& perms, InodeRef *inp)
-{
- ldout(cct, 3) << "_mknod(" << dir->ino << " " << name << ", 0" << oct
- << mode << dec << ", " << rdev << ", uid " << perms.uid()
- << ", gid " << perms.gid() << ")" << dendl;
-
- if (strlen(name) > NAME_MAX)
- return -ENAMETOOLONG;
-
- if (dir->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
- if (is_quota_files_exceeded(dir, perms)) {
- return -EDQUOT;
- }
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_MKNOD);
-
- filepath path;
- dir->make_nosnap_relative_path(path);
- path.push_dentry(name);
- req->set_filepath(path);
- req->set_inode(dir);
- req->head.args.mknod.rdev = rdev;
- req->dentry_drop = CEPH_CAP_FILE_SHARED;
- req->dentry_unless = CEPH_CAP_FILE_EXCL;
-
- bufferlist xattrs_bl;
- int res = _posix_acl_create(dir, &mode, xattrs_bl, perms);
- if (res < 0)
- goto fail;
- req->head.args.mknod.mode = mode;
- if (xattrs_bl.length() > 0)
- req->set_data(xattrs_bl);
-
- Dentry *de;
- res = get_or_create(dir, name, &de);
- if (res < 0)
- goto fail;
- req->set_dentry(de);
-
- res = make_request(req, perms, inp);
-
- trim_cache();
-
- ldout(cct, 3) << "mknod(" << path << ", 0" << oct << mode << dec << ") = " << res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-int Client::ll_mknod(Inode *parent, const char *name, mode_t mode,
- dev_t rdev, struct stat *attr, Inode **out,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vparent = _get_vino(parent);
-
- ldout(cct, 3) << "ll_mknod " << vparent << " " << name << dendl;
- tout(cct) << "ll_mknod" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << mode << std::endl;
- tout(cct) << rdev << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_create(parent, perms);
- if (r < 0)
- return r;
- }
-
- InodeRef in;
- int r = _mknod(parent, name, mode, rdev, perms, &in);
- if (r == 0) {
- fill_stat(in, attr);
- _ll_get(in.get());
- }
- tout(cct) << attr->st_ino << std::endl;
- ldout(cct, 3) << "ll_mknod " << vparent << " " << name
- << " = " << r << " (" << hex << attr->st_ino << dec << ")" << dendl;
- *out = in.get();
- return r;
-}
-
-int Client::ll_mknodx(Inode *parent, const char *name, mode_t mode,
- dev_t rdev, Inode **out,
- struct ceph_statx *stx, unsigned want, unsigned flags,
- const UserPerm& perms)
-{
- unsigned caps = statx_to_mask(flags, want);
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vparent = _get_vino(parent);
-
- ldout(cct, 3) << "ll_mknodx " << vparent << " " << name << dendl;
- tout(cct) << "ll_mknodx" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << mode << std::endl;
- tout(cct) << rdev << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_create(parent, perms);
- if (r < 0)
- return r;
- }
-
- InodeRef in;
- int r = _mknod(parent, name, mode, rdev, perms, &in);
- if (r == 0) {
- fill_statx(in, caps, stx);
- _ll_get(in.get());
- }
- tout(cct) << stx->stx_ino << std::endl;
- ldout(cct, 3) << "ll_mknodx " << vparent << " " << name
- << " = " << r << " (" << hex << stx->stx_ino << dec << ")" << dendl;
- *out = in.get();
- return r;
-}
-
-int Client::_create(Inode *dir, const char *name, int flags, mode_t mode,
- InodeRef *inp, Fh **fhp, int stripe_unit, int stripe_count,
- int object_size, const char *data_pool, bool *created,
- const UserPerm& perms)
-{
- ldout(cct, 3) << "_create(" << dir->ino << " " << name << ", 0" << oct <<
- mode << dec << ")" << dendl;
-
- if (strlen(name) > NAME_MAX)
- return -ENAMETOOLONG;
- if (dir->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
- if (is_quota_files_exceeded(dir, perms)) {
- return -EDQUOT;
- }
-
- // use normalized flags to generate cmode
- int cmode = ceph_flags_to_mode(ceph_flags_sys2wire(flags));
- if (cmode < 0)
- return -EINVAL;
-
- int64_t pool_id = -1;
- if (data_pool && *data_pool) {
- pool_id = objecter->with_osdmap(
- std::mem_fn(&OSDMap::lookup_pg_pool_name), data_pool);
- if (pool_id < 0)
- return -EINVAL;
- if (pool_id > 0xffffffffll)
- return -ERANGE; // bummer!
- }
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_CREATE);
-
- filepath path;
- dir->make_nosnap_relative_path(path);
- path.push_dentry(name);
- req->set_filepath(path);
- req->set_inode(dir);
- req->head.args.open.flags = ceph_flags_sys2wire(flags | O_CREAT);
-
- req->head.args.open.stripe_unit = stripe_unit;
- req->head.args.open.stripe_count = stripe_count;
- req->head.args.open.object_size = object_size;
- if (cct->_conf->client_debug_getattr_caps)
- req->head.args.open.mask = DEBUG_GETATTR_CAPS;
- else
- req->head.args.open.mask = 0;
- req->head.args.open.pool = pool_id;
- req->dentry_drop = CEPH_CAP_FILE_SHARED;
- req->dentry_unless = CEPH_CAP_FILE_EXCL;
-
- mode |= S_IFREG;
- bufferlist xattrs_bl;
- int res = _posix_acl_create(dir, &mode, xattrs_bl, perms);
- if (res < 0)
- goto fail;
- req->head.args.open.mode = mode;
- if (xattrs_bl.length() > 0)
- req->set_data(xattrs_bl);
-
- Dentry *de;
- res = get_or_create(dir, name, &de);
- if (res < 0)
- goto fail;
- req->set_dentry(de);
-
- res = make_request(req, perms, inp, created);
- if (res < 0) {
- goto reply_error;
- }
-
- /* If the caller passed a value in fhp, do the open */
- if(fhp) {
- (*inp)->get_open_ref(cmode);
- *fhp = _create_fh(inp->get(), flags, cmode, perms);
- }
-
- reply_error:
- trim_cache();
-
- ldout(cct, 3) << "create(" << path << ", 0" << oct << mode << dec
- << " layout " << stripe_unit
- << ' ' << stripe_count
- << ' ' << object_size
- <<") = " << res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-
-int Client::_mkdir(Inode *dir, const char *name, mode_t mode, const UserPerm& perm,
- InodeRef *inp)
-{
- ldout(cct, 3) << "_mkdir(" << dir->ino << " " << name << ", 0" << oct
- << mode << dec << ", uid " << perm.uid()
- << ", gid " << perm.gid() << ")" << dendl;
-
- if (strlen(name) > NAME_MAX)
- return -ENAMETOOLONG;
-
- if (dir->snapid != CEPH_NOSNAP && dir->snapid != CEPH_SNAPDIR) {
- return -EROFS;
- }
- if (is_quota_files_exceeded(dir, perm)) {
- return -EDQUOT;
- }
- MetaRequest *req = new MetaRequest(dir->snapid == CEPH_SNAPDIR ?
- CEPH_MDS_OP_MKSNAP : CEPH_MDS_OP_MKDIR);
-
- filepath path;
- dir->make_nosnap_relative_path(path);
- path.push_dentry(name);
- req->set_filepath(path);
- req->set_inode(dir);
- req->dentry_drop = CEPH_CAP_FILE_SHARED;
- req->dentry_unless = CEPH_CAP_FILE_EXCL;
-
- mode |= S_IFDIR;
- bufferlist xattrs_bl;
- int res = _posix_acl_create(dir, &mode, xattrs_bl, perm);
- if (res < 0)
- goto fail;
- req->head.args.mkdir.mode = mode;
- if (xattrs_bl.length() > 0)
- req->set_data(xattrs_bl);
-
- Dentry *de;
- res = get_or_create(dir, name, &de);
- if (res < 0)
- goto fail;
- req->set_dentry(de);
-
- ldout(cct, 10) << "_mkdir: making request" << dendl;
- res = make_request(req, perm, inp);
- ldout(cct, 10) << "_mkdir result is " << res << dendl;
-
- trim_cache();
-
- ldout(cct, 3) << "_mkdir(" << path << ", 0" << oct << mode << dec << ") = " << res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-int Client::ll_mkdir(Inode *parent, const char *name, mode_t mode,
- struct stat *attr, Inode **out, const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vparent = _get_vino(parent);
-
- ldout(cct, 3) << "ll_mkdir " << vparent << " " << name << dendl;
- tout(cct) << "ll_mkdir" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << mode << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_create(parent, perm);
- if (r < 0)
- return r;
- }
-
- InodeRef in;
- int r = _mkdir(parent, name, mode, perm, &in);
- if (r == 0) {
- fill_stat(in, attr);
- _ll_get(in.get());
- }
- tout(cct) << attr->st_ino << std::endl;
- ldout(cct, 3) << "ll_mkdir " << vparent << " " << name
- << " = " << r << " (" << hex << attr->st_ino << dec << ")" << dendl;
- *out = in.get();
- return r;
-}
-
-int Client::ll_mkdirx(Inode *parent, const char *name, mode_t mode, Inode **out,
- struct ceph_statx *stx, unsigned want, unsigned flags,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vparent = _get_vino(parent);
-
- ldout(cct, 3) << "ll_mkdirx " << vparent << " " << name << dendl;
- tout(cct) << "ll_mkdirx" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << mode << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_create(parent, perms);
- if (r < 0)
- return r;
- }
-
- InodeRef in;
- int r = _mkdir(parent, name, mode, perms, &in);
- if (r == 0) {
- fill_statx(in, statx_to_mask(flags, want), stx);
- _ll_get(in.get());
- } else {
- stx->stx_ino = 0;
- stx->stx_mask = 0;
- }
- tout(cct) << stx->stx_ino << std::endl;
- ldout(cct, 3) << "ll_mkdirx " << vparent << " " << name
- << " = " << r << " (" << hex << stx->stx_ino << dec << ")" << dendl;
- *out = in.get();
- return r;
-}
-
-int Client::_symlink(Inode *dir, const char *name, const char *target,
- const UserPerm& perms, InodeRef *inp)
-{
- ldout(cct, 3) << "_symlink(" << dir->ino << " " << name << ", " << target
- << ", uid " << perms.uid() << ", gid " << perms.gid() << ")"
- << dendl;
-
- if (strlen(name) > NAME_MAX)
- return -ENAMETOOLONG;
-
- if (dir->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
- if (is_quota_files_exceeded(dir, perms)) {
- return -EDQUOT;
- }
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_SYMLINK);
-
- filepath path;
- dir->make_nosnap_relative_path(path);
- path.push_dentry(name);
- req->set_filepath(path);
- req->set_inode(dir);
- req->set_string2(target);
- req->dentry_drop = CEPH_CAP_FILE_SHARED;
- req->dentry_unless = CEPH_CAP_FILE_EXCL;
-
- Dentry *de;
- int res = get_or_create(dir, name, &de);
- if (res < 0)
- goto fail;
- req->set_dentry(de);
-
- res = make_request(req, perms, inp);
-
- trim_cache();
- ldout(cct, 3) << "_symlink(\"" << path << "\", \"" << target << "\") = " <<
- res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-int Client::ll_symlink(Inode *parent, const char *name, const char *value,
- struct stat *attr, Inode **out, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vparent = _get_vino(parent);
-
- ldout(cct, 3) << "ll_symlink " << vparent << " " << name << " -> " << value
- << dendl;
- tout(cct) << "ll_symlink" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << value << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_create(parent, perms);
- if (r < 0)
- return r;
- }
-
- InodeRef in;
- int r = _symlink(parent, name, value, perms, &in);
- if (r == 0) {
- fill_stat(in, attr);
- _ll_get(in.get());
- }
- tout(cct) << attr->st_ino << std::endl;
- ldout(cct, 3) << "ll_symlink " << vparent << " " << name
- << " = " << r << " (" << hex << attr->st_ino << dec << ")" << dendl;
- *out = in.get();
- return r;
-}
-
-int Client::ll_symlinkx(Inode *parent, const char *name, const char *value,
- Inode **out, struct ceph_statx *stx, unsigned want,
- unsigned flags, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vparent = _get_vino(parent);
-
- ldout(cct, 3) << "ll_symlinkx " << vparent << " " << name << " -> " << value
- << dendl;
- tout(cct) << "ll_symlinkx" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << value << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_create(parent, perms);
- if (r < 0)
- return r;
- }
-
- InodeRef in;
- int r = _symlink(parent, name, value, perms, &in);
- if (r == 0) {
- fill_statx(in, statx_to_mask(flags, want), stx);
- _ll_get(in.get());
- }
- tout(cct) << stx->stx_ino << std::endl;
- ldout(cct, 3) << "ll_symlinkx " << vparent << " " << name
- << " = " << r << " (" << hex << stx->stx_ino << dec << ")" << dendl;
- *out = in.get();
- return r;
-}
-
-int Client::_unlink(Inode *dir, const char *name, const UserPerm& perm)
-{
- ldout(cct, 3) << "_unlink(" << dir->ino << " " << name
- << " uid " << perm.uid() << " gid " << perm.gid()
- << ")" << dendl;
-
- if (dir->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_UNLINK);
-
- filepath path;
- dir->make_nosnap_relative_path(path);
- path.push_dentry(name);
- req->set_filepath(path);
-
- InodeRef otherin;
-
- Dentry *de;
- int res = get_or_create(dir, name, &de);
- if (res < 0)
- goto fail;
- req->set_dentry(de);
- req->dentry_drop = CEPH_CAP_FILE_SHARED;
- req->dentry_unless = CEPH_CAP_FILE_EXCL;
-
- res = _lookup(dir, name, 0, &otherin, perm);
- if (res < 0)
- goto fail;
- req->set_other_inode(otherin.get());
- req->other_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
-
- req->set_inode(dir);
-
- res = make_request(req, perm);
-
- trim_cache();
- ldout(cct, 3) << "unlink(" << path << ") = " << res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-int Client::ll_unlink(Inode *in, const char *name, const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_unlink " << vino << " " << name << dendl;
- tout(cct) << "ll_unlink" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << name << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_delete(in, name, perm);
- if (r < 0)
- return r;
- }
- return _unlink(in, name, perm);
-}
-
-int Client::_rmdir(Inode *dir, const char *name, const UserPerm& perms)
-{
- ldout(cct, 3) << "_rmdir(" << dir->ino << " " << name << " uid "
- << perms.uid() << " gid " << perms.gid() << ")" << dendl;
-
- if (dir->snapid != CEPH_NOSNAP && dir->snapid != CEPH_SNAPDIR) {
- return -EROFS;
- }
-
- MetaRequest *req = new MetaRequest(dir->snapid == CEPH_SNAPDIR ? CEPH_MDS_OP_RMSNAP:CEPH_MDS_OP_RMDIR);
- filepath path;
- dir->make_nosnap_relative_path(path);
- path.push_dentry(name);
- req->set_filepath(path);
-
- req->dentry_drop = CEPH_CAP_FILE_SHARED;
- req->dentry_unless = CEPH_CAP_FILE_EXCL;
- req->other_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
-
- InodeRef in;
-
- Dentry *de;
- int res = get_or_create(dir, name, &de);
- if (res < 0)
- goto fail;
- res = _lookup(dir, name, 0, &in, perms);
- if (res < 0)
- goto fail;
- if (req->get_op() == CEPH_MDS_OP_RMDIR) {
- req->set_inode(dir);
- req->set_dentry(de);
- req->set_other_inode(in.get());
- } else {
- unlink(de, true, true);
- req->set_other_inode(in.get());
- }
-
- res = make_request(req, perms);
-
- trim_cache();
- ldout(cct, 3) << "rmdir(" << path << ") = " << res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-int Client::ll_rmdir(Inode *in, const char *name, const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_rmdir " << vino << " " << name << dendl;
- tout(cct) << "ll_rmdir" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << name << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_delete(in, name, perms);
- if (r < 0)
- return r;
- }
-
- return _rmdir(in, name, perms);
-}
-
-int Client::_rename(Inode *fromdir, const char *fromname, Inode *todir, const char *toname, const UserPerm& perm)
-{
- ldout(cct, 3) << "_rename(" << fromdir->ino << " " << fromname << " to "
- << todir->ino << " " << toname
- << " uid " << perm.uid() << " gid " << perm.gid() << ")"
- << dendl;
-
- if (fromdir->snapid != todir->snapid)
- return -EXDEV;
-
- int op = CEPH_MDS_OP_RENAME;
- if (fromdir->snapid != CEPH_NOSNAP) {
- if (fromdir == todir && fromdir->snapid == CEPH_SNAPDIR)
- op = CEPH_MDS_OP_RENAMESNAP;
- else
- return -EROFS;
- }
- if (fromdir != todir) {
- Inode *fromdir_root =
- fromdir->quota.is_enable() ? fromdir : get_quota_root(fromdir, perm);
- Inode *todir_root =
- todir->quota.is_enable() ? todir : get_quota_root(todir, perm);
- if (fromdir_root != todir_root) {
- return -EXDEV;
- }
- }
-
- InodeRef target;
- MetaRequest *req = new MetaRequest(op);
-
- filepath from;
- fromdir->make_nosnap_relative_path(from);
- from.push_dentry(fromname);
- filepath to;
- todir->make_nosnap_relative_path(to);
- to.push_dentry(toname);
- req->set_filepath(to);
- req->set_filepath2(from);
-
- Dentry *oldde;
- int res = get_or_create(fromdir, fromname, &oldde);
- if (res < 0)
- goto fail;
- Dentry *de;
- res = get_or_create(todir, toname, &de);
- if (res < 0)
- goto fail;
-
- if (op == CEPH_MDS_OP_RENAME) {
- req->set_old_dentry(oldde);
- req->old_dentry_drop = CEPH_CAP_FILE_SHARED;
- req->old_dentry_unless = CEPH_CAP_FILE_EXCL;
-
- req->set_dentry(de);
- req->dentry_drop = CEPH_CAP_FILE_SHARED;
- req->dentry_unless = CEPH_CAP_FILE_EXCL;
-
- InodeRef oldin, otherin;
- res = _lookup(fromdir, fromname, 0, &oldin, perm);
- if (res < 0)
- goto fail;
- req->set_old_inode(oldin.get());
- req->old_inode_drop = CEPH_CAP_LINK_SHARED;
-
- res = _lookup(todir, toname, 0, &otherin, perm);
- if (res != 0 && res != -ENOENT) {
- goto fail;
- } else if (res == 0) {
- req->set_other_inode(otherin.get());
- req->other_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
- }
-
- req->set_inode(todir);
- } else {
- // renamesnap reply contains no tracedn, so we need to invalidate
- // dentry manually
- unlink(oldde, true, true);
- unlink(de, true, true);
- }
-
- res = make_request(req, perm, &target);
- ldout(cct, 10) << "rename result is " << res << dendl;
-
- // renamed item from our cache
-
- trim_cache();
- ldout(cct, 3) << "_rename(" << from << ", " << to << ") = " << res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-int Client::ll_rename(Inode *parent, const char *name, Inode *newparent,
- const char *newname, const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vparent = _get_vino(parent);
- vinodeno_t vnewparent = _get_vino(newparent);
-
- ldout(cct, 3) << "ll_rename " << vparent << " " << name << " to "
- << vnewparent << " " << newname << dendl;
- tout(cct) << "ll_rename" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << vnewparent.ino.val << std::endl;
- tout(cct) << newname << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_delete(parent, name, perm);
- if (r < 0)
- return r;
- r = may_delete(newparent, newname, perm);
- if (r < 0 && r != -ENOENT)
- return r;
- }
-
- return _rename(parent, name, newparent, newname, perm);
-}
-
-int Client::_link(Inode *in, Inode *dir, const char *newname, const UserPerm& perm, InodeRef *inp)
-{
- ldout(cct, 3) << "_link(" << in->ino << " to " << dir->ino << " " << newname
- << " uid " << perm.uid() << " gid " << perm.gid() << ")" << dendl;
-
- if (strlen(newname) > NAME_MAX)
- return -ENAMETOOLONG;
-
- if (in->snapid != CEPH_NOSNAP || dir->snapid != CEPH_NOSNAP) {
- return -EROFS;
- }
- if (is_quota_files_exceeded(dir, perm)) {
- return -EDQUOT;
- }
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LINK);
-
- filepath path(newname, dir->ino);
- req->set_filepath(path);
- filepath existing(in->ino);
- req->set_filepath2(existing);
-
- req->set_inode(dir);
- req->inode_drop = CEPH_CAP_FILE_SHARED;
- req->inode_unless = CEPH_CAP_FILE_EXCL;
-
- Dentry *de;
- int res = get_or_create(dir, newname, &de);
- if (res < 0)
- goto fail;
- req->set_dentry(de);
-
- res = make_request(req, perm, inp);
- ldout(cct, 10) << "link result is " << res << dendl;
-
- trim_cache();
- ldout(cct, 3) << "link(" << existing << ", " << path << ") = " << res << dendl;
- return res;
-
- fail:
- put_request(req);
- return res;
-}
-
-int Client::ll_link(Inode *in, Inode *newparent, const char *newname,
- const UserPerm& perm)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
- vinodeno_t vnewparent = _get_vino(newparent);
-
- ldout(cct, 3) << "ll_link " << vino << " to " << vnewparent << " " <<
- newname << dendl;
- tout(cct) << "ll_link" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << vnewparent << std::endl;
- tout(cct) << newname << std::endl;
-
- int r = 0;
- InodeRef target;
-
- if (!cct->_conf->fuse_default_permissions) {
- if (S_ISDIR(in->mode))
- return -EPERM;
-
- r = may_hardlink(in, perm);
- if (r < 0)
- return r;
-
- r = may_create(newparent, perm);
- if (r < 0)
- return r;
- }
-
- return _link(in, newparent, newname, perm, &target);
-}
-
-int Client::ll_num_osds(void)
-{
- Mutex::Locker lock(client_lock);
- return objecter->with_osdmap(std::mem_fn(&OSDMap::get_num_osds));
-}
-
-int Client::ll_osdaddr(int osd, uint32_t *addr)
-{
- Mutex::Locker lock(client_lock);
-
- entity_addr_t g;
- bool exists = objecter->with_osdmap([&](const OSDMap& o) {
- if (!o.exists(osd))
- return false;
- g = o.get_addr(osd);
- return true;
- });
- if (!exists)
- return -1;
- uint32_t nb_addr = (g.in4_addr()).sin_addr.s_addr;
- *addr = ntohl(nb_addr);
- return 0;
-}
-
-uint32_t Client::ll_stripe_unit(Inode *in)
-{
- Mutex::Locker lock(client_lock);
- return in->layout.stripe_unit;
-}
-
-uint64_t Client::ll_snap_seq(Inode *in)
-{
- Mutex::Locker lock(client_lock);
- return in->snaprealm->seq;
-}
-
-int Client::ll_file_layout(Inode *in, file_layout_t *layout)
-{
- Mutex::Locker lock(client_lock);
- *layout = in->layout;
- return 0;
-}
-
-int Client::ll_file_layout(Fh *fh, file_layout_t *layout)
-{
- return ll_file_layout(fh->inode.get(), layout);
-}
-
-/* Currently we cannot take advantage of redundancy in reads, since we
- would have to go through all possible placement groups (a
- potentially quite large number determined by a hash), and use CRUSH
- to calculate the appropriate set of OSDs for each placement group,
- then index into that. An array with one entry per OSD is much more
- tractable and works for demonstration purposes. */
-
-int Client::ll_get_stripe_osd(Inode *in, uint64_t blockno,
- file_layout_t* layout)
-{
- Mutex::Locker lock(client_lock);
-
- inodeno_t ino = ll_get_inodeno(in);
- uint32_t object_size = layout->object_size;
- uint32_t su = layout->stripe_unit;
- uint32_t stripe_count = layout->stripe_count;
- uint64_t stripes_per_object = object_size / su;
-
- uint64_t stripeno = blockno / stripe_count; // which horizontal stripe (Y)
- uint64_t stripepos = blockno % stripe_count; // which object in the object set (X)
- uint64_t objectsetno = stripeno / stripes_per_object; // which object set
- uint64_t objectno = objectsetno * stripe_count + stripepos; // object id
-
- object_t oid = file_object_t(ino, objectno);
- return objecter->with_osdmap([&](const OSDMap& o) {
- ceph_object_layout olayout =
- o.file_to_object_layout(oid, *layout);
- pg_t pg = (pg_t)olayout.ol_pgid;
- vector<int> osds;
- int primary;
- o.pg_to_acting_osds(pg, &osds, &primary);
- return primary;
- });
-}
-
-/* Return the offset of the block, internal to the object */
-
-uint64_t Client::ll_get_internal_offset(Inode *in, uint64_t blockno)
-{
- Mutex::Locker lock(client_lock);
- file_layout_t *layout=&(in->layout);
- uint32_t object_size = layout->object_size;
- uint32_t su = layout->stripe_unit;
- uint64_t stripes_per_object = object_size / su;
-
- return (blockno % stripes_per_object) * su;
-}
-
-int Client::ll_opendir(Inode *in, int flags, dir_result_t** dirpp,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_opendir " << vino << dendl;
- tout(cct) << "ll_opendir" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
-
- if (!cct->_conf->fuse_default_permissions) {
- int r = may_open(in, flags, perms);
- if (r < 0)
- return r;
- }
-
- int r = _opendir(in, dirpp, perms);
- tout(cct) << (unsigned long)*dirpp << std::endl;
-
- ldout(cct, 3) << "ll_opendir " << vino << " = " << r << " (" << *dirpp << ")"
- << dendl;
- return r;
-}
-
-int Client::ll_releasedir(dir_result_t *dirp)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_releasedir " << dirp << dendl;
- tout(cct) << "ll_releasedir" << std::endl;
- tout(cct) << (unsigned long)dirp << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- _closedir(dirp);
- return 0;
-}
-
-int Client::ll_fsyncdir(dir_result_t *dirp)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_fsyncdir " << dirp << dendl;
- tout(cct) << "ll_fsyncdir" << std::endl;
- tout(cct) << (unsigned long)dirp << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _fsync(dirp->inode.get(), false);
-}
-
-int Client::ll_open(Inode *in, int flags, Fh **fhp, const UserPerm& perms)
-{
- assert(!(flags & O_CREAT));
-
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = _get_vino(in);
-
- ldout(cct, 3) << "ll_open " << vino << " " << ceph_flags_sys2wire(flags) << dendl;
- tout(cct) << "ll_open" << std::endl;
- tout(cct) << vino.ino.val << std::endl;
- tout(cct) << ceph_flags_sys2wire(flags) << std::endl;
-
- int r;
- if (!cct->_conf->fuse_default_permissions) {
- r = may_open(in, flags, perms);
- if (r < 0)
- goto out;
- }
-
- r = _open(in, flags, 0, fhp /* may be NULL */, perms);
-
- out:
- Fh *fhptr = fhp ? *fhp : NULL;
- if (fhptr) {
- ll_unclosed_fh_set.insert(fhptr);
- }
- tout(cct) << (unsigned long)fhptr << std::endl;
- ldout(cct, 3) << "ll_open " << vino << " " << ceph_flags_sys2wire(flags) <<
- " = " << r << " (" << fhptr << ")" << dendl;
- return r;
-}
-
-int Client::_ll_create(Inode *parent, const char *name, mode_t mode,
- int flags, InodeRef *in, int caps, Fh **fhp,
- const UserPerm& perms)
-{
- *fhp = NULL;
-
- vinodeno_t vparent = _get_vino(parent);
-
- ldout(cct, 3) << "_ll_create " << vparent << " " << name << " 0" << oct <<
- mode << dec << " " << ceph_flags_sys2wire(flags) << ", uid " << perms.uid()
- << ", gid " << perms.gid() << dendl;
- tout(cct) << "ll_create" << std::endl;
- tout(cct) << vparent.ino.val << std::endl;
- tout(cct) << name << std::endl;
- tout(cct) << mode << std::endl;
- tout(cct) << ceph_flags_sys2wire(flags) << std::endl;
-
- bool created = false;
- int r = _lookup(parent, name, caps, in, perms);
-
- if (r == 0 && (flags & O_CREAT) && (flags & O_EXCL))
- return -EEXIST;
-
- if (r == -ENOENT && (flags & O_CREAT)) {
- if (!cct->_conf->fuse_default_permissions) {
- r = may_create(parent, perms);
- if (r < 0)
- goto out;
- }
- r = _create(parent, name, flags, mode, in, fhp, 0, 0, 0, NULL, &created,
- perms);
- if (r < 0)
- goto out;
- }
-
- if (r < 0)
- goto out;
-
- assert(*in);
-
- ldout(cct, 20) << "_ll_create created = " << created << dendl;
- if (!created) {
- if (!cct->_conf->fuse_default_permissions) {
- r = may_open(in->get(), flags, perms);
- if (r < 0) {
- if (*fhp) {
- int release_r = _release_fh(*fhp);
- assert(release_r == 0); // during create, no async data ops should have happened
- }
- goto out;
- }
- }
- if (*fhp == NULL) {
- r = _open(in->get(), flags, mode, fhp, perms);
- if (r < 0)
- goto out;
- }
- }
-
-out:
- if (*fhp) {
- ll_unclosed_fh_set.insert(*fhp);
- }
-
- ino_t ino = 0;
- if (r >= 0) {
- Inode *inode = in->get();
- if (use_faked_inos())
- ino = inode->faked_ino;
- else
- ino = inode->ino;
- }
-
- tout(cct) << (unsigned long)*fhp << std::endl;
- tout(cct) << ino << std::endl;
- ldout(cct, 3) << "_ll_create " << vparent << " " << name << " 0" << oct <<
- mode << dec << " " << ceph_flags_sys2wire(flags) << " = " << r << " (" <<
- *fhp << " " << hex << ino << dec << ")" << dendl;
-
- return r;
-}
-
-int Client::ll_create(Inode *parent, const char *name, mode_t mode,
- int flags, struct stat *attr, Inode **outp, Fh **fhp,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
- InodeRef in;
-
- if (unmounting)
- return -ENOTCONN;
-
- int r = _ll_create(parent, name, mode, flags, &in, CEPH_STAT_CAP_INODE_ALL,
- fhp, perms);
- if (r >= 0) {
- assert(in);
-
- // passing an Inode in outp requires an additional ref
- if (outp) {
- _ll_get(in.get());
- *outp = in.get();
- }
- fill_stat(in, attr);
- } else {
- attr->st_ino = 0;
- }
-
- return r;
-}
-
-int Client::ll_createx(Inode *parent, const char *name, mode_t mode,
- int oflags, Inode **outp, Fh **fhp,
- struct ceph_statx *stx, unsigned want, unsigned lflags,
- const UserPerm& perms)
-{
- unsigned caps = statx_to_mask(lflags, want);
- Mutex::Locker lock(client_lock);
- InodeRef in;
-
- if (unmounting)
- return -ENOTCONN;
-
- int r = _ll_create(parent, name, mode, oflags, &in, caps, fhp, perms);
- if (r >= 0) {
- assert(in);
-
- // passing an Inode in outp requires an additional ref
- if (outp) {
- _ll_get(in.get());
- *outp = in.get();
- }
- fill_statx(in, caps, stx);
- } else {
- stx->stx_ino = 0;
- stx->stx_mask = 0;
- }
-
- return r;
-}
-
-loff_t Client::ll_lseek(Fh *fh, loff_t offset, int whence)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "ll_lseek" << std::endl;
- tout(cct) << offset << std::endl;
- tout(cct) << whence << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _lseek(fh, offset, whence);
-}
-
-int Client::ll_read(Fh *fh, loff_t off, loff_t len, bufferlist *bl)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_read " << fh << " " << fh->inode->ino << " " << " " << off << "~" << len << dendl;
- tout(cct) << "ll_read" << std::endl;
- tout(cct) << (unsigned long)fh << std::endl;
- tout(cct) << off << std::endl;
- tout(cct) << len << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _read(fh, off, len, bl);
-}
-
-int Client::ll_read_block(Inode *in, uint64_t blockid,
- char *buf,
- uint64_t offset,
- uint64_t length,
- file_layout_t* layout)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- vinodeno_t vino = ll_get_vino(in);
- object_t oid = file_object_t(vino.ino, blockid);
- C_SaferCond onfinish;
- bufferlist bl;
-
- objecter->read(oid,
- object_locator_t(layout->pool_id),
- offset,
- length,
- vino.snapid,
- &bl,
- CEPH_OSD_FLAG_READ,
- &onfinish);
-
- client_lock.Unlock();
- int r = onfinish.wait();
- client_lock.Lock();
-
- if (r >= 0) {
- bl.copy(0, bl.length(), buf);
- r = bl.length();
- }
-
- return r;
-}
-
-/* It appears that the OSD doesn't return success unless the entire
- buffer was written, return the write length on success. */
-
-int Client::ll_write_block(Inode *in, uint64_t blockid,
- char* buf, uint64_t offset,
- uint64_t length, file_layout_t* layout,
- uint64_t snapseq, uint32_t sync)
-{
- Mutex flock("Client::ll_write_block flock");
- vinodeno_t vino = ll_get_vino(in);
- Cond cond;
- bool done;
- int r = 0;
- Context *onsafe = nullptr;
-
- if (length == 0) {
- return -EINVAL;
- }
- if (true || sync) {
- /* if write is stable, the epilogue is waiting on
- * flock */
- onsafe = new C_SafeCond(&flock, &cond, &done, &r);
- done = false;
- } else {
- /* if write is unstable, we just place a barrier for
- * future commits to wait on */
- /*onsafe = new C_Block_Sync(this, vino.ino,
- barrier_interval(offset, offset + length), &r);
- */
- done = true;
- }
- object_t oid = file_object_t(vino.ino, blockid);
- SnapContext fakesnap;
- bufferptr bp;
- if (length > 0) bp = buffer::copy(buf, length);
- bufferlist bl;
- bl.push_back(bp);
-
- ldout(cct, 1) << "ll_block_write for " << vino.ino << "." << blockid
- << dendl;
-
- fakesnap.seq = snapseq;
-
- /* lock just in time */
- client_lock.Lock();
- if (unmounting) {
- client_lock.Unlock();
- delete onsafe;
- return -ENOTCONN;
- }
-
- objecter->write(oid,
- object_locator_t(layout->pool_id),
- offset,
- length,
- fakesnap,
- bl,
- ceph::real_clock::now(),
- 0,
- onsafe);
-
- client_lock.Unlock();
- if (!done /* also !sync */) {
- flock.Lock();
- while (! done)
- cond.Wait(flock);
- flock.Unlock();
- }
-
- if (r < 0) {
- return r;
- } else {
- return length;
- }
-}
-
-int Client::ll_commit_blocks(Inode *in,
- uint64_t offset,
- uint64_t length)
-{
- Mutex::Locker lock(client_lock);
- /*
- BarrierContext *bctx;
- vinodeno_t vino = ll_get_vino(in);
- uint64_t ino = vino.ino;
-
- ldout(cct, 1) << "ll_commit_blocks for " << vino.ino << " from "
- << offset << " to " << length << dendl;
-
- if (length == 0) {
- return -EINVAL;
- }
-
- map<uint64_t, BarrierContext*>::iterator p = barriers.find(ino);
- if (p != barriers.end()) {
- barrier_interval civ(offset, offset + length);
- p->second->commit_barrier(civ);
- }
- */
- return 0;
-}
-
-int Client::ll_write(Fh *fh, loff_t off, loff_t len, const char *data)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_write " << fh << " " << fh->inode->ino << " " << off <<
- "~" << len << dendl;
- tout(cct) << "ll_write" << std::endl;
- tout(cct) << (unsigned long)fh << std::endl;
- tout(cct) << off << std::endl;
- tout(cct) << len << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- int r = _write(fh, off, len, data, NULL, 0);
- ldout(cct, 3) << "ll_write " << fh << " " << off << "~" << len << " = " << r
- << dendl;
- return r;
-}
-
-int Client::ll_flush(Fh *fh)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_flush " << fh << " " << fh->inode->ino << " " << dendl;
- tout(cct) << "ll_flush" << std::endl;
- tout(cct) << (unsigned long)fh << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _flush(fh);
-}
-
-int Client::ll_fsync(Fh *fh, bool syncdataonly)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_fsync " << fh << " " << fh->inode->ino << " " << dendl;
- tout(cct) << "ll_fsync" << std::endl;
- tout(cct) << (unsigned long)fh << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- int r = _fsync(fh, syncdataonly);
- if (r) {
- // If we're returning an error, clear it from the FH
- fh->take_async_err();
- }
- return r;
-}
-
-#ifdef FALLOC_FL_PUNCH_HOLE
-
-int Client::_fallocate(Fh *fh, int mode, int64_t offset, int64_t length)
-{
- if (offset < 0 || length <= 0)
- return -EINVAL;
-
- if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
- return -EOPNOTSUPP;
-
- if ((mode & FALLOC_FL_PUNCH_HOLE) && !(mode & FALLOC_FL_KEEP_SIZE))
- return -EOPNOTSUPP;
-
- Inode *in = fh->inode.get();
-
- if (objecter->osdmap_pool_full(in->layout.pool_id) &&
- !(mode & FALLOC_FL_PUNCH_HOLE)) {
- return -ENOSPC;
- }
-
- if (in->snapid != CEPH_NOSNAP)
- return -EROFS;
-
- if ((fh->mode & CEPH_FILE_MODE_WR) == 0)
- return -EBADF;
-
- uint64_t size = offset + length;
- if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE)) &&
- size > in->size &&
- is_quota_bytes_exceeded(in, size - in->size, fh->actor_perms)) {
- return -EDQUOT;
- }
-
- int have;
- int r = get_caps(in, CEPH_CAP_FILE_WR, CEPH_CAP_FILE_BUFFER, &have, -1);
- if (r < 0)
- return r;
-
- Mutex uninline_flock("Client::_fallocate_uninline_data flock");
- Cond uninline_cond;
- bool uninline_done = false;
- int uninline_ret = 0;
- Context *onuninline = NULL;
-
- if (mode & FALLOC_FL_PUNCH_HOLE) {
- if (in->inline_version < CEPH_INLINE_NONE &&
- (have & CEPH_CAP_FILE_BUFFER)) {
- bufferlist bl;
- int len = in->inline_data.length();
- if (offset < len) {
- if (offset > 0)
- in->inline_data.copy(0, offset, bl);
- int size = length;
- if (offset + size > len)
- size = len - offset;
- if (size > 0)
- bl.append_zero(size);
- if (offset + size < len)
- in->inline_data.copy(offset + size, len - offset - size, bl);
- in->inline_data = bl;
- in->inline_version++;
- }
- in->mtime = ceph_clock_now();
- in->change_attr++;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
- } else {
- if (in->inline_version < CEPH_INLINE_NONE) {
- onuninline = new C_SafeCond(&uninline_flock,
- &uninline_cond,
- &uninline_done,
- &uninline_ret);
- uninline_data(in, onuninline);
- }
-
- Mutex flock("Client::_punch_hole flock");
- Cond cond;
- bool done = false;
- Context *onfinish = new C_SafeCond(&flock, &cond, &done);
-
- unsafe_sync_write++;
- get_cap_ref(in, CEPH_CAP_FILE_BUFFER);
-
- _invalidate_inode_cache(in, offset, length);
- filer->zero(in->ino, &in->layout,
- in->snaprealm->get_snap_context(),
- offset, length,
- ceph::real_clock::now(),
- 0, true, onfinish);
- in->mtime = ceph_clock_now();
- in->change_attr++;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
-
- client_lock.Unlock();
- flock.Lock();
- while (!done)
- cond.Wait(flock);
- flock.Unlock();
- client_lock.Lock();
- _sync_write_commit(in);
- }
- } else if (!(mode & FALLOC_FL_KEEP_SIZE)) {
- uint64_t size = offset + length;
- if (size > in->size) {
- in->size = size;
- in->mtime = ceph_clock_now();
- in->change_attr++;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
-
- if (is_quota_bytes_approaching(in, fh->actor_perms)) {
- check_caps(in, CHECK_CAPS_NODELAY);
- } else if (is_max_size_approaching(in)) {
- check_caps(in, 0);
- }
- }
- }
-
- if (onuninline) {
- client_lock.Unlock();
- uninline_flock.Lock();
- while (!uninline_done)
- uninline_cond.Wait(uninline_flock);
- uninline_flock.Unlock();
- client_lock.Lock();
-
- if (uninline_ret >= 0 || uninline_ret == -ECANCELED) {
- in->inline_data.clear();
- in->inline_version = CEPH_INLINE_NONE;
- mark_caps_dirty(in, CEPH_CAP_FILE_WR);
- check_caps(in, 0);
- } else
- r = uninline_ret;
- }
-
- put_cap_ref(in, CEPH_CAP_FILE_WR);
- return r;
-}
-#else
-
-int Client::_fallocate(Fh *fh, int mode, int64_t offset, int64_t length)
-{
- return -EOPNOTSUPP;
-}
-
-#endif
-
-
-int Client::ll_fallocate(Fh *fh, int mode, loff_t offset, loff_t length)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_fallocate " << fh << " " << fh->inode->ino << " " << dendl;
- tout(cct) << "ll_fallocate " << mode << " " << offset << " " << length << std::endl;
- tout(cct) << (unsigned long)fh << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _fallocate(fh, mode, offset, length);
-}
-
-int Client::fallocate(int fd, int mode, loff_t offset, loff_t length)
-{
- Mutex::Locker lock(client_lock);
- tout(cct) << "fallocate " << " " << fd << mode << " " << offset << " " << length << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *fh = get_filehandle(fd);
- if (!fh)
- return -EBADF;
-#if defined(__linux__) && defined(O_PATH)
- if (fh->flags & O_PATH)
- return -EBADF;
-#endif
- return _fallocate(fh, mode, offset, length);
-}
-
-int Client::ll_release(Fh *fh)
-{
- Mutex::Locker lock(client_lock);
- ldout(cct, 3) << "ll_release (fh)" << fh << " " << fh->inode->ino << " " <<
- dendl;
- tout(cct) << "ll_release (fh)" << std::endl;
- tout(cct) << (unsigned long)fh << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- if (ll_unclosed_fh_set.count(fh))
- ll_unclosed_fh_set.erase(fh);
- return _release_fh(fh);
-}
-
-int Client::ll_getlk(Fh *fh, struct flock *fl, uint64_t owner)
-{
- Mutex::Locker lock(client_lock);
-
- ldout(cct, 3) << "ll_getlk (fh)" << fh << " " << fh->inode->ino << dendl;
- tout(cct) << "ll_getk (fh)" << (unsigned long)fh << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _getlk(fh, fl, owner);
-}
-
-int Client::ll_setlk(Fh *fh, struct flock *fl, uint64_t owner, int sleep)
-{
- Mutex::Locker lock(client_lock);
-
- ldout(cct, 3) << "ll_setlk (fh) " << fh << " " << fh->inode->ino << dendl;
- tout(cct) << "ll_setk (fh)" << (unsigned long)fh << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _setlk(fh, fl, owner, sleep);
-}
-
-int Client::ll_flock(Fh *fh, int cmd, uint64_t owner)
-{
- Mutex::Locker lock(client_lock);
-
- ldout(cct, 3) << "ll_flock (fh) " << fh << " " << fh->inode->ino << dendl;
- tout(cct) << "ll_flock (fh)" << (unsigned long)fh << std::endl;
-
- if (unmounting)
- return -ENOTCONN;
-
- return _flock(fh, cmd, owner);
-}
-
-class C_Client_RequestInterrupt : public Context {
-private:
- Client *client;
- MetaRequest *req;
-public:
- C_Client_RequestInterrupt(Client *c, MetaRequest *r) : client(c), req(r) {
- req->get();
- }
- void finish(int r) override {
- Mutex::Locker l(client->client_lock);
- assert(req->head.op == CEPH_MDS_OP_SETFILELOCK);
- client->_interrupt_filelock(req);
- client->put_request(req);
- }
-};
-
-void Client::ll_interrupt(void *d)
-{
- MetaRequest *req = static_cast<MetaRequest*>(d);
- ldout(cct, 3) << "ll_interrupt tid " << req->get_tid() << dendl;
- tout(cct) << "ll_interrupt tid " << req->get_tid() << std::endl;
- interrupt_finisher.queue(new C_Client_RequestInterrupt(this, req));
-}
-
-// =========================================
-// layout
-
-// expose file layouts
-
-int Client::describe_layout(const char *relpath, file_layout_t *lp,
- const UserPerm& perms)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- filepath path(relpath);
- InodeRef in;
- int r = path_walk(path, &in, perms);
- if (r < 0)
- return r;
-
- *lp = in->layout;
-
- ldout(cct, 3) << "describe_layout(" << relpath << ") = 0" << dendl;
- return 0;
-}
-
-int Client::fdescribe_layout(int fd, file_layout_t *lp)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- Inode *in = f->inode.get();
-
- *lp = in->layout;
-
- ldout(cct, 3) << "fdescribe_layout(" << fd << ") = 0" << dendl;
- return 0;
-}
-
-int64_t Client::get_default_pool_id()
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- /* first data pool is the default */
- return mdsmap->get_first_data_pool();
-}
-
-// expose osdmap
-
-int64_t Client::get_pool_id(const char *pool_name)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- return objecter->with_osdmap(std::mem_fn(&OSDMap::lookup_pg_pool_name),
- pool_name);
-}
-
-string Client::get_pool_name(int64_t pool)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return string();
-
- return objecter->with_osdmap([pool](const OSDMap& o) {
- return o.have_pg_pool(pool) ? o.get_pool_name(pool) : string();
- });
-}
-
-int Client::get_pool_replication(int64_t pool)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- return objecter->with_osdmap([pool](const OSDMap& o) {
- return o.have_pg_pool(pool) ? o.get_pg_pool(pool)->get_size() : -ENOENT;
- });
-}
-
-int Client::get_file_extent_osds(int fd, loff_t off, loff_t *len, vector<int>& osds)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- Inode *in = f->inode.get();
-
- vector<ObjectExtent> extents;
- Striper::file_to_extents(cct, in->ino, &in->layout, off, 1, in->truncate_size, extents);
- assert(extents.size() == 1);
-
- objecter->with_osdmap([&](const OSDMap& o) {
- pg_t pg = o.object_locator_to_pg(extents[0].oid, extents[0].oloc);
- o.pg_to_acting_osds(pg, osds);
- });
-
- if (osds.empty())
- return -EINVAL;
-
- /*
- * Return the remainder of the extent (stripe unit)
- *
- * If length = 1 is passed to Striper::file_to_extents we get a single
- * extent back, but its length is one so we still need to compute the length
- * to the end of the stripe unit.
- *
- * If length = su then we may get 1 or 2 objects back in the extents vector
- * which would have to be examined. Even then, the offsets are local to the
- * object, so matching up to the file offset is extra work.
- *
- * It seems simpler to stick with length = 1 and manually compute the
- * remainder.
- */
- if (len) {
- uint64_t su = in->layout.stripe_unit;
- *len = su - (off % su);
- }
-
- return 0;
-}
-
-int Client::get_osd_crush_location(int id, vector<pair<string, string> >& path)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- if (id < 0)
- return -EINVAL;
- return objecter->with_osdmap([&](const OSDMap& o) {
- return o.crush->get_full_location_ordered(id, path);
- });
-}
-
-int Client::get_file_stripe_address(int fd, loff_t offset,
- vector<entity_addr_t>& address)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- Inode *in = f->inode.get();
-
- // which object?
- vector<ObjectExtent> extents;
- Striper::file_to_extents(cct, in->ino, &in->layout, offset, 1,
- in->truncate_size, extents);
- assert(extents.size() == 1);
-
- // now we have the object and its 'layout'
- return objecter->with_osdmap([&](const OSDMap& o) {
- pg_t pg = o.object_locator_to_pg(extents[0].oid, extents[0].oloc);
- vector<int> osds;
- o.pg_to_acting_osds(pg, osds);
- if (osds.empty())
- return -EINVAL;
- for (unsigned i = 0; i < osds.size(); i++) {
- entity_addr_t addr = o.get_addr(osds[i]);
- address.push_back(addr);
- }
- return 0;
- });
-}
-
-int Client::get_osd_addr(int osd, entity_addr_t& addr)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- return objecter->with_osdmap([&](const OSDMap& o) {
- if (!o.exists(osd))
- return -ENOENT;
-
- addr = o.get_addr(osd);
- return 0;
- });
-}
-
-int Client::enumerate_layout(int fd, vector<ObjectExtent>& result,
- loff_t length, loff_t offset)
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- Fh *f = get_filehandle(fd);
- if (!f)
- return -EBADF;
- Inode *in = f->inode.get();
-
- // map to a list of extents
- Striper::file_to_extents(cct, in->ino, &in->layout, offset, length, in->truncate_size, result);
-
- ldout(cct, 3) << "enumerate_layout(" << fd << ", " << length << ", " << offset << ") = 0" << dendl;
- return 0;
-}
-
-
-/*
- * find an osd with the same ip. -1 if none.
- */
-int Client::get_local_osd()
-{
- Mutex::Locker lock(client_lock);
-
- if (unmounting)
- return -ENOTCONN;
-
- objecter->with_osdmap([this](const OSDMap& o) {
- if (o.get_epoch() != local_osd_epoch) {
- local_osd = o.find_osd_on_ip(messenger->get_myaddr());
- local_osd_epoch = o.get_epoch();
- }
- });
- return local_osd;
-}
-
-
-
-
-
-
-// ===============================
-
-void Client::ms_handle_connect(Connection *con)
-{
- ldout(cct, 10) << "ms_handle_connect on " << con->get_peer_addr() << dendl;
-}
-
-bool Client::ms_handle_reset(Connection *con)
-{
- ldout(cct, 0) << "ms_handle_reset on " << con->get_peer_addr() << dendl;
- return false;
-}
-
-void Client::ms_handle_remote_reset(Connection *con)
-{
- ldout(cct, 0) << "ms_handle_remote_reset on " << con->get_peer_addr() << dendl;
- Mutex::Locker l(client_lock);
- switch (con->get_peer_type()) {
- case CEPH_ENTITY_TYPE_MDS:
- {
- // kludge to figure out which mds this is; fixme with a Connection* state
- mds_rank_t mds = MDS_RANK_NONE;
- MetaSession *s = NULL;
- for (map<mds_rank_t,MetaSession*>::iterator p = mds_sessions.begin();
- p != mds_sessions.end();
- ++p) {
- if (mdsmap->get_addr(p->first) == con->get_peer_addr()) {
- mds = p->first;
- s = p->second;
- }
- }
- if (mds >= 0) {
- assert (s != NULL);
- switch (s->state) {
- case MetaSession::STATE_CLOSING:
- ldout(cct, 1) << "reset from mds we were closing; we'll call that closed" << dendl;
- _closed_mds_session(s);
- break;
-
- case MetaSession::STATE_OPENING:
- {
- ldout(cct, 1) << "reset from mds we were opening; retrying" << dendl;
- list<Context*> waiters;
- waiters.swap(s->waiting_for_open);
- _closed_mds_session(s);
- MetaSession *news = _get_or_open_mds_session(mds);
- news->waiting_for_open.swap(waiters);
- }
- break;
-
- case MetaSession::STATE_OPEN:
- {
- const md_config_t *conf = cct->_conf;
- if (conf->client_reconnect_stale) {
- ldout(cct, 1) << "reset from mds we were open; close mds session for reconnect" << dendl;
- _closed_mds_session(s);
- } else {
- ldout(cct, 1) << "reset from mds we were open; mark session as stale" << dendl;
- s->state = MetaSession::STATE_STALE;
- }
- }
- break;
-
- case MetaSession::STATE_NEW:
- case MetaSession::STATE_CLOSED:
- default:
- break;
- }
- }
- }
- break;
- }
-}
-
-bool Client::ms_handle_refused(Connection *con)
-{
- ldout(cct, 1) << "ms_handle_refused on " << con->get_peer_addr() << dendl;
- return false;
-}
-
-bool Client::ms_get_authorizer(int dest_type, AuthAuthorizer **authorizer, bool force_new)
-{
- if (dest_type == CEPH_ENTITY_TYPE_MON)
- return true;
- *authorizer = monclient->build_authorizer(dest_type);
- return true;
-}
-
-Inode *Client::get_quota_root(Inode *in, const UserPerm& perms)
-{
- Inode *cur = in;
- utime_t now = ceph_clock_now();
-
- while (cur) {
- if (cur != in && cur->quota.is_enable())
- break;
-
- Inode *parent_in = NULL;
- if (!cur->dn_set.empty()) {
- for (auto p = cur->dn_set.begin(); p != cur->dn_set.end(); ++p) {
- Dentry *dn = *p;
- if (dn->lease_mds >= 0 &&
- dn->lease_ttl > now &&
- mds_sessions.count(dn->lease_mds)) {
- parent_in = dn->dir->parent_inode;
- } else {
- Inode *diri = dn->dir->parent_inode;
- if (diri->caps_issued_mask(CEPH_CAP_FILE_SHARED) &&
- diri->shared_gen == dn->cap_shared_gen) {
- parent_in = dn->dir->parent_inode;
- }
- }
- if (parent_in)
- break;
- }
- } else if (root_parents.count(cur)) {
- parent_in = root_parents[cur].get();
- }
-
- if (parent_in) {
- cur = parent_in;
- continue;
- }
-
- if (cur == root_ancestor)
- break;
-
- // deleted inode
- if (cur->nlink == 0) {
- cur = root_ancestor;
- break;
- }
-
- MetaRequest *req = new MetaRequest(CEPH_MDS_OP_LOOKUPNAME);
- filepath path(cur->ino);
- req->set_filepath(path);
- req->set_inode(cur);
-
- InodeRef parent_ref;
- int ret = make_request(req, perms, &parent_ref);
- if (ret < 0) {
- ldout(cct, 1) << __func__ << " " << in->vino()
- << " failed to find parent of " << cur->vino()
- << " err " << ret << dendl;
- // FIXME: what to do?
- cur = root_ancestor;
- break;
- }
-
- now = ceph_clock_now();
- if (cur == in)
- cur = parent_ref.get();
- else
- cur = in; // start over
- }
-
- ldout(cct, 10) << __func__ << " " << in->vino() << " -> " << cur->vino() << dendl;
- return cur;
-}
-
-/**
- * Traverse quota ancestors of the Inode, return true
- * if any of them passes the passed function
- */
-bool Client::check_quota_condition(Inode *in, const UserPerm& perms,
- std::function<bool (const Inode &in)> test)
-{
- while (true) {
- assert(in != NULL);
- if (test(*in)) {
- return true;
- }
-
- if (in == root_ancestor) {
- // We're done traversing, drop out
- return false;
- } else {
- // Continue up the tree
- in = get_quota_root(in, perms);
- }
- }
-
- return false;
-}
-
-bool Client::is_quota_files_exceeded(Inode *in, const UserPerm& perms)
-{
- return check_quota_condition(in, perms,
- [](const Inode &in) {
- return in.quota.max_files && in.rstat.rsize() >= in.quota.max_files;
- });
-}
-
-bool Client::is_quota_bytes_exceeded(Inode *in, int64_t new_bytes,
- const UserPerm& perms)
-{
- return check_quota_condition(in, perms,
- [&new_bytes](const Inode &in) {
- return in.quota.max_bytes && (in.rstat.rbytes + new_bytes)
- > in.quota.max_bytes;
- });
-}
-
-bool Client::is_quota_bytes_approaching(Inode *in, const UserPerm& perms)
-{
- return check_quota_condition(in, perms,
- [](const Inode &in) {
- if (in.quota.max_bytes) {
- if (in.rstat.rbytes >= in.quota.max_bytes) {
- return true;
- }
-
- assert(in.size >= in.reported_size);
- const uint64_t space = in.quota.max_bytes - in.rstat.rbytes;
- const uint64_t size = in.size - in.reported_size;
- return (space >> 4) < size;
- } else {
- return false;
- }
- });
-}
-
-enum {
- POOL_CHECKED = 1,
- POOL_CHECKING = 2,
- POOL_READ = 4,
- POOL_WRITE = 8,
-};
-
-int Client::check_pool_perm(Inode *in, int need)
-{
- if (!cct->_conf->client_check_pool_perm)
- return 0;
-
- int64_t pool_id = in->layout.pool_id;
- std::string pool_ns = in->layout.pool_ns;
- std::pair<int64_t, std::string> perm_key(pool_id, pool_ns);
- int have = 0;
- while (true) {
- auto it = pool_perms.find(perm_key);
- if (it == pool_perms.end())
- break;
- if (it->second == POOL_CHECKING) {
- // avoid concurrent checkings
- wait_on_list(waiting_for_pool_perm);
- } else {
- have = it->second;
- assert(have & POOL_CHECKED);
- break;
- }
- }
-
- if (!have) {
- if (in->snapid != CEPH_NOSNAP) {
- // pool permission check needs to write to the first object. But for snapshot,
- // head of the first object may have alread been deleted. To avoid creating
- // orphan object, skip the check for now.
- return 0;
- }
-
- pool_perms[perm_key] = POOL_CHECKING;
-
- char oid_buf[32];
- snprintf(oid_buf, sizeof(oid_buf), "%llx.00000000", (unsigned long long)in->ino);
- object_t oid = oid_buf;
-
- SnapContext nullsnapc;
-
- C_SaferCond rd_cond;
- ObjectOperation rd_op;
- rd_op.stat(NULL, (ceph::real_time*)nullptr, NULL);
-
- objecter->mutate(oid, OSDMap::file_to_object_locator(in->layout), rd_op,
- nullsnapc, ceph::real_clock::now(), 0, &rd_cond);
-
- C_SaferCond wr_cond;
- ObjectOperation wr_op;
- wr_op.create(true);
-
- objecter->mutate(oid, OSDMap::file_to_object_locator(in->layout), wr_op,
- nullsnapc, ceph::real_clock::now(), 0, &wr_cond);
-
- client_lock.Unlock();
- int rd_ret = rd_cond.wait();
- int wr_ret = wr_cond.wait();
- client_lock.Lock();
-
- bool errored = false;
-
- if (rd_ret == 0 || rd_ret == -ENOENT)
- have |= POOL_READ;
- else if (rd_ret != -EPERM) {
- ldout(cct, 10) << "check_pool_perm on pool " << pool_id << " ns " << pool_ns
- << " rd_err = " << rd_ret << " wr_err = " << wr_ret << dendl;
- errored = true;
- }
-
- if (wr_ret == 0 || wr_ret == -EEXIST)
- have |= POOL_WRITE;
- else if (wr_ret != -EPERM) {
- ldout(cct, 10) << "check_pool_perm on pool " << pool_id << " ns " << pool_ns
- << " rd_err = " << rd_ret << " wr_err = " << wr_ret << dendl;
- errored = true;
- }
-
- if (errored) {
- // Indeterminate: erase CHECKING state so that subsequent calls re-check.
- // Raise EIO because actual error code might be misleading for
- // userspace filesystem user.
- pool_perms.erase(perm_key);
- signal_cond_list(waiting_for_pool_perm);
- return -EIO;
- }
-
- pool_perms[perm_key] = have | POOL_CHECKED;
- signal_cond_list(waiting_for_pool_perm);
- }
-
- if ((need & CEPH_CAP_FILE_RD) && !(have & POOL_READ)) {
- ldout(cct, 10) << "check_pool_perm on pool " << pool_id << " ns " << pool_ns
- << " need " << ccap_string(need) << ", but no read perm" << dendl;
- return -EPERM;
- }
- if ((need & CEPH_CAP_FILE_WR) && !(have & POOL_WRITE)) {
- ldout(cct, 10) << "check_pool_perm on pool " << pool_id << " ns " << pool_ns
- << " need " << ccap_string(need) << ", but no write perm" << dendl;
- return -EPERM;
- }
-
- return 0;
-}
-
-int Client::_posix_acl_permission(Inode *in, const UserPerm& perms, unsigned want)
-{
- if (acl_type == POSIX_ACL) {
- if (in->xattrs.count(ACL_EA_ACCESS)) {
- const bufferptr& access_acl = in->xattrs[ACL_EA_ACCESS];
-
- return posix_acl_permits(access_acl, in->uid, in->gid, perms, want);
- }
- }
- return -EAGAIN;
-}
-
-int Client::_posix_acl_chmod(Inode *in, mode_t mode, const UserPerm& perms)
-{
- if (acl_type == NO_ACL)
- return 0;
-
- int r = _getattr(in, CEPH_STAT_CAP_XATTR, perms, in->xattr_version == 0);
- if (r < 0)
- goto out;
-
- if (acl_type == POSIX_ACL) {
- if (in->xattrs.count(ACL_EA_ACCESS)) {
- const bufferptr& access_acl = in->xattrs[ACL_EA_ACCESS];
- bufferptr acl(access_acl.c_str(), access_acl.length());
- r = posix_acl_access_chmod(acl, mode);
- if (r < 0)
- goto out;
- r = _do_setxattr(in, ACL_EA_ACCESS, acl.c_str(), acl.length(), 0, perms);
- } else {
- r = 0;
- }
- }
-out:
- ldout(cct, 10) << __func__ << " ino " << in->ino << " result=" << r << dendl;
- return r;
-}
-
-int Client::_posix_acl_create(Inode *dir, mode_t *mode, bufferlist& xattrs_bl,
- const UserPerm& perms)
-{
- if (acl_type == NO_ACL)
- return 0;
-
- if (S_ISLNK(*mode))
- return 0;
-
- int r = _getattr(dir, CEPH_STAT_CAP_XATTR, perms, dir->xattr_version == 0);
- if (r < 0)
- goto out;
-
- if (acl_type == POSIX_ACL) {
- if (dir->xattrs.count(ACL_EA_DEFAULT)) {
- map<string, bufferptr> xattrs;
-
- const bufferptr& default_acl = dir->xattrs[ACL_EA_DEFAULT];
- bufferptr acl(default_acl.c_str(), default_acl.length());
- r = posix_acl_inherit_mode(acl, mode);
- if (r < 0)
- goto out;
-
- if (r > 0) {
- r = posix_acl_equiv_mode(acl.c_str(), acl.length(), mode);
- if (r < 0)
- goto out;
- if (r > 0)
- xattrs[ACL_EA_ACCESS] = acl;
- }
-
- if (S_ISDIR(*mode))
- xattrs[ACL_EA_DEFAULT] = dir->xattrs[ACL_EA_DEFAULT];
-
- r = xattrs.size();
- if (r > 0)
- ::encode(xattrs, xattrs_bl);
- } else {
- if (umask_cb)
- *mode &= ~umask_cb(callback_handle);
- r = 0;
- }
- }
-out:
- ldout(cct, 10) << __func__ << " dir ino " << dir->ino << " result=" << r << dendl;
- return r;
-}
-
-void Client::set_filer_flags(int flags)
-{
- Mutex::Locker l(client_lock);
- assert(flags == 0 ||
- flags == CEPH_OSD_FLAG_LOCALIZE_READS);
- objecter->add_global_op_flags(flags);
-}
-
-void Client::clear_filer_flags(int flags)
-{
- Mutex::Locker l(client_lock);
- assert(flags == CEPH_OSD_FLAG_LOCALIZE_READS);
- objecter->clear_global_op_flag(flags);
-}
-
-/**
- * This is included in cap release messages, to cause
- * the MDS to wait until this OSD map epoch. It is necessary
- * in corner cases where we cancel RADOS ops, so that
- * nobody else tries to do IO to the same objects in
- * the same epoch as the cancelled ops.
- */
-void Client::set_cap_epoch_barrier(epoch_t e)
-{
- ldout(cct, 5) << __func__ << " epoch = " << e << dendl;
- cap_epoch_barrier = e;
-}
-
-const char** Client::get_tracked_conf_keys() const
-{
- static const char* keys[] = {
- "client_cache_size",
- "client_cache_mid",
- "client_acl_type",
- NULL
- };
- return keys;
-}
-
-void Client::handle_conf_change(const struct md_config_t *conf,
- const std::set <std::string> &changed)
-{
- Mutex::Locker lock(client_lock);
-
- if (changed.count("client_cache_mid")) {
- lru.lru_set_midpoint(cct->_conf->client_cache_mid);
- }
- if (changed.count("client_acl_type")) {
- acl_type = NO_ACL;
- if (cct->_conf->client_acl_type == "posix_acl")
- acl_type = POSIX_ACL;
- }
-}
-
-void Client::init_groups(UserPerm *perms)
-{
- gid_t *sgids;
- int count = _getgrouplist(&sgids, perms->uid(), perms->gid());
- perms->init_gids(sgids, count);
-}
-
-void intrusive_ptr_add_ref(Inode *in)
-{
- in->get();
-}
-
-void intrusive_ptr_release(Inode *in)
-{
- in->client->put_inode(in);
-}
-
-mds_rank_t Client::_get_random_up_mds() const
-{
- assert(client_lock.is_locked_by_me());
-
- std::set<mds_rank_t> up;
- mdsmap->get_up_mds_set(up);
-
- if (up.empty())
- return MDS_RANK_NONE;
- std::set<mds_rank_t>::const_iterator p = up.begin();
- for (int n = rand() % up.size(); n; n--)
- ++p;
- return *p;
-}
-
-
-StandaloneClient::StandaloneClient(Messenger *m, MonClient *mc)
- : Client(m, mc, new Objecter(m->cct, m, mc, NULL, 0, 0))
-{
- monclient->set_messenger(m);
- objecter->set_client_incarnation(0);
-}
-
-StandaloneClient::~StandaloneClient()
-{
- delete objecter;
- objecter = nullptr;
-}
-
-int StandaloneClient::init()
-{
- timer.init();
- objectcacher->start();
- objecter->init();
-
- client_lock.Lock();
- assert(!initialized);
-
- messenger->add_dispatcher_tail(objecter);
- messenger->add_dispatcher_tail(this);
-
- monclient->set_want_keys(CEPH_ENTITY_TYPE_MDS | CEPH_ENTITY_TYPE_OSD);
- int r = monclient->init();
- if (r < 0) {
- // need to do cleanup because we're in an intermediate init state
- timer.shutdown();
- client_lock.Unlock();
- objecter->shutdown();
- objectcacher->stop();
- monclient->shutdown();
- return r;
- }
- objecter->start();
-
- client_lock.Unlock();
- _finish_init();
-
- return 0;
-}
-
-void StandaloneClient::shutdown()
-{
- Client::shutdown();
- objecter->shutdown();
- monclient->shutdown();
-}
-
Code Review / stor4nfv.git / blobdiff