X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fceph%2Fsrc%2Fclient%2FInode.cc;fp=src%2Fceph%2Fsrc%2Fclient%2FInode.cc;h=a3d42254765ce46334960d176ab5a85060c56f85;hb=812ff6ca9fcd3e629e49d4328905f33eee8ca3f5;hp=0000000000000000000000000000000000000000;hpb=15280273faafb77777eab341909a3f495cf248d9;p=stor4nfv.git

diff --git a/src/ceph/src/client/Inode.cc b/src/ceph/src/client/Inode.cc
new file mode 100644
index 0000000..a3d4225
--- /dev/null
+++ b/src/ceph/src/client/Inode.cc
@@ -0,0 +1,557 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "Client.h"
+#include "Inode.h"
+#include "Dentry.h"
+#include "Dir.h"
+#include "Fh.h"
+#include "MetaSession.h"
+#include "ClientSnapRealm.h"
+
+#include "mds/flock.h"
+
+Inode::~Inode()
+{
+  cap_item.remove_myself();
+  snaprealm_item.remove_myself();
+
+  if (snapdir_parent) {
+    snapdir_parent->flags &= ~I_SNAPDIR_OPEN;
+    snapdir_parent.reset();
+  }
+
+  if (!oset.objects.empty()) {
+    lsubdout(client->cct, client, 0) << __func__ << ": leftover objects on inode 0x"
+      << std::hex << ino << std::dec << dendl;
+    assert(oset.objects.empty());
+  }
+
+  delete fcntl_locks;
+  delete flock_locks;
+}
+
+ostream& operator<<(ostream &out, const Inode &in)
+{
+  out << in.vino() << "("
+      << "faked_ino=" << in.faked_ino
+      << " ref=" << in._ref
+      << " ll_ref=" << in.ll_ref
+      << " cap_refs=" << in.cap_refs
+      << " open=" << in.open_by_mode
+      << " mode=" << oct << in.mode << dec
+      << " size=" << in.size << "/" << in.max_size
+      << " mtime=" << in.mtime
+      << " caps=" << ccap_string(in.caps_issued());
+  if (!in.caps.empty()) {
+    out << "(";
+    for (auto p = in.caps.begin(); p != in.caps.end(); ++p) {
+      if (p != in.caps.begin())
+        out << ',';
+      out << p->first << '=' << ccap_string(p->second->issued);
+    }
+    out << ")";
+  }
+  if (in.dirty_caps)
+    out << " dirty_caps=" << ccap_string(in.dirty_caps);
+  if (in.flushing_caps)
+    out << " flushing_caps=" << ccap_string(in.flushing_caps);
+
+  if (in.flags & I_COMPLETE)
+    out << " COMPLETE";
+
+  if (in.is_file())
+    out << " " << in.oset;
+
+  if (!in.dn_set.empty())
+    out << " parents=" << in.dn_set;
+
+  if (in.is_dir() && in.has_dir_layout())
+    out << " has_dir_layout";
+
+  if (in.quota.is_enable())
+    out << " " << in.quota;
+
+  out << ' ' << &in << ")";
+  return out;
+}
+
+
+void Inode::make_long_path(filepath& p)
+{
+  if (!dn_set.empty()) {
+    assert((*dn_set.begin())->dir && (*dn_set.begin())->dir->parent_inode);
+    (*dn_set.begin())->dir->parent_inode->make_long_path(p);
+    p.push_dentry((*dn_set.begin())->name);
+  } else if (snapdir_parent) {
+    snapdir_parent->make_nosnap_relative_path(p);
+    string empty;
+    p.push_dentry(empty);
+  } else
+    p = filepath(ino);
+}
+
+/*
+ * make a filepath suitable for an mds request:
+ *  - if we are non-snapped/live, the ino is sufficient, e.g. #1234
+ *  - if we are snapped, make filepath relative to first non-snapped parent.
+ */
+void Inode::make_nosnap_relative_path(filepath& p)
+{
+  if (snapid == CEPH_NOSNAP) {
+    p = filepath(ino);
+  } else if (snapdir_parent) {
+    snapdir_parent->make_nosnap_relative_path(p);
+    string empty;
+    p.push_dentry(empty);
+  } else if (!dn_set.empty()) {
+    assert((*dn_set.begin())->dir && (*dn_set.begin())->dir->parent_inode);
+    (*dn_set.begin())->dir->parent_inode->make_nosnap_relative_path(p);
+    p.push_dentry((*dn_set.begin())->name);
+  } else {
+    p = filepath(ino);
+  }
+}
+
+void Inode::get_open_ref(int mode)
+{
+  open_by_mode[mode]++;
+}
+
+bool Inode::put_open_ref(int mode)
+{
+  //cout << "open_by_mode[" << mode << "] " << open_by_mode[mode] << " -> " << (open_by_mode[mode]-1) << std::endl;
+  if (--open_by_mode[mode] == 0)
+    return true;
+  return false;
+}
+
+void Inode::get_cap_ref(int cap)
+{
+  int n = 0;
+  while (cap) {
+    if (cap & 1) {
+      int c = 1 << n;
+      cap_refs[c]++;
+      //cout << "inode " << *this << " get " << cap_string(c) << " " << (cap_refs[c]-1) << " -> " << cap_refs[c] << std::endl;
+    }
+    cap >>= 1;
+    n++;
+  }
+}
+
+int Inode::put_cap_ref(int cap)
+{
+  // if cap is always a single bit (which it seems to be)
+  // all this logic is equivalent to:
+  // if (--cap_refs[c]) return false; else return true;
+  int last = 0;
+  int n = 0;
+  while (cap) {
+    if (cap & 1) {
+      int c = 1 << n;
+      if (cap_refs[c] <= 0) {
+	lderr(client->cct) << "put_cap_ref " << ccap_string(c) << " went negative on " << *this << dendl;
+	assert(cap_refs[c] > 0);
+      }
+      if (--cap_refs[c] == 0)
+        last |= c;
+      //cout << "inode " << *this << " put " << cap_string(c) << " " << (cap_refs[c]+1) << " -> " << cap_refs[c] << std::endl;
+    }
+    cap >>= 1;
+    n++;
+  }
+  return last;
+}
+
+bool Inode::is_any_caps()
+{
+  return !caps.empty() || snap_caps;
+}
+
+bool Inode::cap_is_valid(Cap* cap) const
+{
+  /*cout << "cap_gen     " << cap->session-> cap_gen << std::endl
+    << "session gen " << cap->gen << std::endl
+    << "cap expire  " << cap->session->cap_ttl << std::endl
+    << "cur time    " << ceph_clock_now(cct) << std::endl;*/
+  if ((cap->session->cap_gen <= cap->gen)
+      && (ceph_clock_now() < cap->session->cap_ttl)) {
+    return true;
+  }
+  return false;
+}
+
+int Inode::caps_issued(int *implemented) const
+{
+  int c = snap_caps;
+  int i = 0;
+  for (map<mds_rank_t,Cap*>::const_iterator it = caps.begin();
+       it != caps.end();
+       ++it)
+    if (cap_is_valid(it->second)) {
+      c |= it->second->issued;
+      i |= it->second->implemented;
+    }
+  if (implemented)
+    *implemented = i;
+  return c;
+}
+
+void Inode::touch_cap(Cap *cap)
+{
+  // move to back of LRU
+  cap->session->caps.push_back(&cap->cap_item);
+}
+
+void Inode::try_touch_cap(mds_rank_t mds)
+{
+  if (caps.count(mds))
+    touch_cap(caps[mds]);
+}
+
+bool Inode::caps_issued_mask(unsigned mask)
+{
+  int c = snap_caps;
+  if ((c & mask) == mask)
+    return true;
+  // prefer auth cap
+  if (auth_cap &&
+      cap_is_valid(auth_cap) &&
+      (auth_cap->issued & mask) == mask) {
+    touch_cap(auth_cap);
+    return true;
+  }
+  // try any cap
+  for (map<mds_rank_t,Cap*>::iterator it = caps.begin();
+       it != caps.end();
+       ++it) {
+    if (cap_is_valid(it->second)) {
+      if ((it->second->issued & mask) == mask) {
+	touch_cap(it->second);
+	return true;
+      }
+      c |= it->second->issued;
+    }
+  }
+  if ((c & mask) == mask) {
+    // bah.. touch them all
+    for (map<mds_rank_t,Cap*>::iterator it = caps.begin();
+	 it != caps.end();
+	 ++it)
+      touch_cap(it->second);
+    return true;
+  }
+  return false;
+}
+
+int Inode::caps_used()
+{
+  int w = 0;
+  for (map<int,int>::iterator p = cap_refs.begin();
+       p != cap_refs.end();
+       ++p)
+    if (p->second)
+      w |= p->first;
+  return w;
+}
+
+int Inode::caps_file_wanted()
+{
+  int want = 0;
+  for (map<int,int>::iterator p = open_by_mode.begin();
+       p != open_by_mode.end();
+       ++p)
+    if (p->second)
+      want |= ceph_caps_for_mode(p->first);
+  return want;
+}
+
+int Inode::caps_wanted()
+{
+  int want = caps_file_wanted() | caps_used();
+  if (want & CEPH_CAP_FILE_BUFFER)
+    want |= CEPH_CAP_FILE_EXCL;
+  return want;
+}
+
+int Inode::caps_mds_wanted()
+{
+  int want = 0;
+  for (auto it = caps.begin(); it != caps.end(); ++it)
+    want |= it->second->wanted;
+  return want;
+}
+
+int Inode::caps_dirty()
+{
+  return dirty_caps | flushing_caps;
+}
+
+const UserPerm* Inode::get_best_perms()
+{
+  const UserPerm *perms = NULL;
+  for (const auto ci : caps) {
+    const UserPerm& iperm = ci.second->latest_perms;
+    if (!perms) { // we don't have any, take what's present
+      perms = &iperm;
+    } else if (iperm.uid() == uid) {
+      if (iperm.gid() == gid) { // we have the best possible, return
+	return &iperm;
+      }
+      if (perms->uid() != uid) { // take uid > gid every time
+	perms = &iperm;
+      }
+    } else if (perms->uid() != uid && iperm.gid() == gid) {
+      perms = &iperm; // a matching gid is better than nothing
+    }
+  }
+  return perms;
+}
+
+bool Inode::have_valid_size()
+{
+  // RD+RDCACHE or WR+WRBUFFER => valid size
+  if (caps_issued() & (CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL))
+    return true;
+  return false;
+}
+
+// open Dir for an inode.  if it's not open, allocated it (and pin dentry in memory).
+Dir *Inode::open_dir()
+{
+  if (!dir) {
+    dir = new Dir(this);
+    lsubdout(client->cct, client, 15) << "open_dir " << dir << " on " << this << dendl;
+    assert(dn_set.size() < 2); // dirs can't be hard-linked
+    if (!dn_set.empty())
+      (*dn_set.begin())->get();      // pin dentry
+    get();                  // pin inode
+  }
+  return dir;
+}
+
+bool Inode::check_mode(const UserPerm& perms, unsigned want)
+{
+  if (uid == perms.uid()) {
+    // if uid is owner, owner entry determines access
+    want = want << 6;
+  } else if (perms.gid_in_groups(gid)) {
+    // if a gid or sgid matches the owning group, group entry determines access
+    want = want << 3;
+  }
+
+  return (mode & want) == want;
+}
+
+void Inode::get() {
+  _ref++;
+  lsubdout(client->cct, client, 15) << "inode.get on " << this << " " <<  ino << '.' << snapid
+				    << " now " << _ref << dendl;
+}
+
+//private method to put a reference; see Client::put_inode()
+int Inode::_put(int n) {
+  _ref -= n;
+  lsubdout(client->cct, client, 15) << "inode.put on " << this << " " << ino << '.' << snapid
+				    << " now " << _ref << dendl;
+  assert(_ref >= 0);
+  return _ref;
+}
+
+
+void Inode::dump(Formatter *f) const
+{
+  f->dump_stream("ino") << ino;
+  f->dump_stream("snapid") << snapid;
+  if (rdev)
+    f->dump_unsigned("rdev", rdev);
+  f->dump_stream("ctime") << ctime;
+  f->dump_stream("btime") << btime;
+  f->dump_stream("mode") << '0' << std::oct << mode << std::dec;
+  f->dump_unsigned("uid", uid);
+  f->dump_unsigned("gid", gid);
+  f->dump_int("nlink", nlink);
+
+  f->dump_unsigned("size", size);
+  f->dump_unsigned("max_size", max_size);
+  f->dump_unsigned("truncate_seq", truncate_seq);
+  f->dump_unsigned("truncate_size", truncate_size);
+  f->dump_stream("mtime") << mtime;
+  f->dump_stream("atime") << atime;
+  f->dump_unsigned("time_warp_seq", time_warp_seq);
+  f->dump_unsigned("change_attr", change_attr);
+
+  f->dump_object("layout", layout);
+  if (is_dir()) {
+    f->open_object_section("dir_layout");
+    ::dump(dir_layout, f);
+    f->close_section();
+
+    f->dump_bool("complete", flags & I_COMPLETE);
+    f->dump_bool("ordered", flags & I_DIR_ORDERED);
+
+    /* FIXME when wip-mds-encoding is merged ***
+    f->open_object_section("dir_stat");
+    dirstat.dump(f);
+    f->close_section();
+
+    f->open_object_section("rstat");
+    rstat.dump(f);
+    f->close_section();
+    */
+  }
+
+  f->dump_unsigned("version", version);
+  f->dump_unsigned("xattr_version", xattr_version);
+  f->dump_unsigned("flags", flags);
+
+  if (is_dir()) {
+    if (!dir_contacts.empty()) {
+      f->open_object_section("dir_contants");
+      for (set<int>::iterator p = dir_contacts.begin(); p != dir_contacts.end(); ++p)
+	f->dump_int("mds", *p);
+      f->close_section();
+    }
+    f->dump_int("dir_hashed", (int)dir_hashed);
+    f->dump_int("dir_replicated", (int)dir_replicated);
+  }
+
+  f->open_array_section("caps");
+  for (map<mds_rank_t,Cap*>::const_iterator p = caps.begin(); p != caps.end(); ++p) {
+    f->open_object_section("cap");
+    f->dump_int("mds", p->first);
+    if (p->second == auth_cap)
+      f->dump_int("auth", 1);
+    p->second->dump(f);
+    f->close_section();
+  }
+  f->close_section();
+  if (auth_cap)
+    f->dump_int("auth_cap", auth_cap->session->mds_num);
+
+  f->dump_stream("dirty_caps") << ccap_string(dirty_caps);
+  if (flushing_caps) {
+    f->dump_stream("flushings_caps") << ccap_string(flushing_caps);
+    f->open_object_section("flushing_cap_tid");
+    for (map<ceph_tid_t, int>::const_iterator p = flushing_cap_tids.begin();
+	 p != flushing_cap_tids.end();
+	 ++p) {
+      string n(ccap_string(p->second));
+      f->dump_unsigned(n.c_str(), p->first);
+    }
+    f->close_section();
+  }
+  f->dump_int("shared_gen", shared_gen);
+  f->dump_int("cache_gen", cache_gen);
+  if (snap_caps) {
+    f->dump_int("snap_caps", snap_caps);
+    f->dump_int("snap_cap_refs", snap_cap_refs);
+  }
+
+  f->dump_stream("hold_caps_until") << hold_caps_until;
+
+  if (snaprealm) {
+    f->open_object_section("snaprealm");
+    snaprealm->dump(f);
+    f->close_section();
+  }
+  if (!cap_snaps.empty()) {
+    for (const auto &p : cap_snaps) {
+      f->open_object_section("cap_snap");
+      f->dump_stream("follows") << p.first;
+      p.second.dump(f);
+      f->close_section();
+    }
+  }
+
+  // open
+  if (!open_by_mode.empty()) {
+    f->open_array_section("open_by_mode");
+    for (map<int,int>::const_iterator p = open_by_mode.begin(); p != open_by_mode.end(); ++p) {
+      f->open_object_section("ref");
+      f->dump_int("mode", p->first);
+      f->dump_int("refs", p->second);
+      f->close_section();
+    }
+    f->close_section();
+  }
+  if (!cap_refs.empty()) {
+    f->open_array_section("cap_refs");
+    for (map<int,int>::const_iterator p = cap_refs.begin(); p != cap_refs.end(); ++p) {
+      f->open_object_section("cap_ref");
+      f->dump_stream("cap") << ccap_string(p->first);
+      f->dump_int("refs", p->second);
+      f->close_section();
+    }
+    f->close_section();
+  }
+
+  f->dump_unsigned("reported_size", reported_size);
+  if (wanted_max_size != max_size)
+    f->dump_unsigned("wanted_max_size", wanted_max_size);
+  if (requested_max_size != max_size)
+    f->dump_unsigned("requested_max_size", requested_max_size);
+
+  f->dump_int("ref", _ref);
+  f->dump_int("ll_ref", ll_ref);
+
+  if (!dn_set.empty()) {
+    f->open_array_section("parents");
+    for (set<Dentry*>::const_iterator p = dn_set.begin(); p != dn_set.end(); ++p) {
+      f->open_object_section("dentry");
+      f->dump_stream("dir_ino") << (*p)->dir->parent_inode->ino;
+      f->dump_string("name", (*p)->name);
+      f->close_section();
+    }
+    f->close_section();
+  }
+}
+
+void Cap::dump(Formatter *f) const
+{
+  f->dump_int("mds", session->mds_num);
+  f->dump_stream("ino") << inode->ino;
+  f->dump_unsigned("cap_id", cap_id);
+  f->dump_stream("issued") << ccap_string(issued);
+  if (implemented != issued)
+    f->dump_stream("implemented") << ccap_string(implemented);
+  f->dump_stream("wanted") << ccap_string(wanted);
+  f->dump_unsigned("seq", seq);
+  f->dump_unsigned("issue_seq", issue_seq);
+  f->dump_unsigned("mseq", mseq);
+  f->dump_unsigned("gen", gen);
+}
+
+void CapSnap::dump(Formatter *f) const
+{
+  f->dump_stream("ino") << in->ino;
+  f->dump_stream("issued") << ccap_string(issued);
+  f->dump_stream("dirty") << ccap_string(dirty);
+  f->dump_unsigned("size", size);
+  f->dump_stream("ctime") << ctime;
+  f->dump_stream("mtime") << mtime;
+  f->dump_stream("atime") << atime;
+  f->dump_int("time_warp_seq", time_warp_seq);
+  f->dump_stream("mode") << '0' << std::oct << mode << std::dec;
+  f->dump_unsigned("uid", uid);
+  f->dump_unsigned("gid", gid);
+  if (!xattrs.empty()) {
+    f->open_object_section("xattr_lens");
+    for (map<string,bufferptr>::const_iterator p = xattrs.begin(); p != xattrs.end(); ++p)
+      f->dump_int(p->first.c_str(), p->second.length());
+    f->close_section();
+  }
+  f->dump_unsigned("xattr_version", xattr_version);
+  f->dump_int("writing", (int)writing);
+  f->dump_int("dirty_data", (int)dirty_data);
+  f->dump_unsigned("flush_tid", flush_tid);
+}
+
+void Inode::set_async_err(int r)
+{
+  for (const auto &fh : fhs) {
+    fh->async_err = r;
+  }
+}
+