--- /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