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-rw-r--r--src/client/Inode.h366
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diff --git a/src/client/Inode.h b/src/client/Inode.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_CLIENT_INODE_H
+#define CEPH_CLIENT_INODE_H
+
+#include <numeric>
+
+#include "include/compat.h"
+#include "include/ceph_assert.h"
+#include "include/types.h"
+#include "include/xlist.h"
+
+#include "mds/flock.h"
+#include "mds/mdstypes.h" // hrm
+#include "include/cephfs/types.h"
+
+#include "osdc/ObjectCacher.h"
+
+#include "InodeRef.h"
+#include "MetaSession.h"
+#include "UserPerm.h"
+#include "Delegation.h"
+
+class Client;
+class Dentry;
+class Dir;
+struct SnapRealm;
+struct Inode;
+class MetaRequest;
+class filepath;
+class Fh;
+
+class Cap {
+public:
+ Cap() = delete;
+ Cap(Inode &i, MetaSession *s) : inode(i),
+ session(s),
+ gen(s->cap_gen),
+ cap_item(this)
+ {
+ s->caps.push_back(&cap_item);
+ }
+ ~Cap() {
+ cap_item.remove_myself();
+ }
+
+ void touch(void) {
+ // move to back of LRU
+ session->caps.push_back(&cap_item);
+ }
+
+ void dump(Formatter *f) const;
+
+ Inode &inode;
+ MetaSession *session;
+ uint64_t cap_id = 0;
+ unsigned issued = 0;
+ unsigned implemented = 0;
+ unsigned wanted = 0; // as known to mds.
+ uint64_t seq = 0;
+ uint64_t issue_seq = 0;
+ __u32 mseq = 0; // migration seq
+ __u32 gen;
+ UserPerm latest_perms;
+
+private:
+ /* Note that this Cap will not move (see Inode::caps):
+ *
+ * Section 23.1.2#8
+ * The insert members shall not affect the validity of iterators and
+ * references to the container, and the erase members shall invalidate only
+ * iterators and references to the erased elements.
+ */
+ xlist<Cap *>::item cap_item;
+};
+
+struct CapSnap {
+ //snapid_t follows; // map key
+ InodeRef in;
+ SnapContext context;
+ int issued = 0, dirty = 0;
+
+ uint64_t size = 0;
+ utime_t ctime, btime, mtime, atime;
+ version_t time_warp_seq = 0;
+ uint64_t change_attr = 0;
+ uint32_t mode = 0;
+ uid_t uid = 0;
+ gid_t gid = 0;
+ std::map<std::string,bufferptr> xattrs;
+ version_t xattr_version = 0;
+
+ bufferlist inline_data;
+ version_t inline_version = 0;
+
+ bool writing = false, dirty_data = false;
+ uint64_t flush_tid = 0;
+
+ int64_t cap_dirtier_uid = -1;
+ int64_t cap_dirtier_gid = -1;
+
+ explicit CapSnap(Inode *i)
+ : in(i)
+ {}
+
+ void dump(Formatter *f) const;
+};
+
+// inode flags
+#define I_COMPLETE (1 << 0)
+#define I_DIR_ORDERED (1 << 1)
+#define I_SNAPDIR_OPEN (1 << 2)
+#define I_KICK_FLUSH (1 << 3)
+#define I_CAP_DROPPED (1 << 4)
+#define I_ERROR_FILELOCK (1 << 5)
+
+struct Inode : RefCountedObject {
+ ceph::coarse_mono_time hold_caps_until;
+ Client *client;
+
+ // -- the actual inode --
+ inodeno_t ino; // ORDER DEPENDENCY: oset
+ snapid_t snapid;
+ ino_t faked_ino = 0;
+
+ uint32_t rdev = 0; // if special file
+
+ // affected by any inode change...
+ utime_t ctime; // inode change time
+ utime_t btime; // birth time
+
+ // perm (namespace permissions)
+ uint32_t mode = 0;
+ uid_t uid = 0;
+ gid_t gid = 0;
+
+ // nlink
+ int32_t nlink = 0;
+
+ // file (data access)
+ ceph_dir_layout dir_layout{};
+ file_layout_t layout;
+ uint64_t size = 0; // on directory, # dentries
+ uint32_t truncate_seq = 1;
+ uint64_t truncate_size = -1;
+ utime_t mtime; // file data modify time.
+ utime_t atime; // file data access time.
+ uint32_t time_warp_seq = 0; // count of (potential) mtime/atime timewarps (i.e., utimes())
+ uint64_t change_attr = 0;
+
+ uint64_t max_size = 0; // max size we can write to
+
+ // dirfrag, recursive accountin
+ frag_info_t dirstat;
+ nest_info_t rstat;
+
+ // special stuff
+ version_t version = 0; // auth only
+ version_t xattr_version = 0;
+ utime_t snap_btime; // snapshot creation (birth) time
+ std::map<std::string, std::string> snap_metadata;
+
+ // inline data
+ version_t inline_version = 0;
+ bufferlist inline_data;
+
+ std::vector<uint8_t> fscrypt_auth;
+ std::vector<uint8_t> fscrypt_file;
+ bool is_fscrypt_enabled() {
+ return !!fscrypt_auth.size();
+ }
+
+ bool is_root() const { return ino == CEPH_INO_ROOT; }
+ bool is_symlink() const { return (mode & S_IFMT) == S_IFLNK; }
+ bool is_dir() const { return (mode & S_IFMT) == S_IFDIR; }
+ bool is_file() const { return (mode & S_IFMT) == S_IFREG; }
+
+ bool has_dir_layout() const {
+ return layout != file_layout_t();
+ }
+
+ __u32 hash_dentry_name(const std::string &dn) {
+ int which = dir_layout.dl_dir_hash;
+ if (!which)
+ which = CEPH_STR_HASH_LINUX;
+ ceph_assert(ceph_str_hash_valid(which));
+ return ceph_str_hash(which, dn.data(), dn.length());
+ }
+
+ unsigned flags = 0;
+
+ quota_info_t quota;
+
+ bool is_complete_and_ordered() {
+ static const unsigned wants = I_COMPLETE | I_DIR_ORDERED;
+ return (flags & wants) == wants;
+ }
+
+ // about the dir (if this is one!)
+ Dir *dir = 0; // if i'm a dir.
+ fragtree_t dirfragtree;
+ uint64_t dir_release_count = 1;
+ uint64_t dir_ordered_count = 1;
+ bool dir_hashed = false;
+ bool dir_replicated = false;
+
+ // per-mds caps
+ std::map<mds_rank_t, Cap> caps; // mds -> Cap
+ Cap *auth_cap = 0;
+ int64_t cap_dirtier_uid = -1;
+ int64_t cap_dirtier_gid = -1;
+ unsigned dirty_caps = 0;
+ unsigned flushing_caps = 0;
+ std::map<ceph_tid_t, int> flushing_cap_tids;
+ int shared_gen = 0;
+ int cache_gen = 0;
+ int snap_caps = 0;
+ int snap_cap_refs = 0;
+ xlist<Inode*>::item delay_cap_item, dirty_cap_item, flushing_cap_item;
+
+ SnapRealm *snaprealm = 0;
+ xlist<Inode*>::item snaprealm_item;
+ InodeRef snapdir_parent; // only if we are a snapdir inode
+ std::map<snapid_t,CapSnap> cap_snaps; // pending flush to mds
+
+ //int open_by_mode[CEPH_FILE_MODE_NUM];
+ std::map<int,int> open_by_mode;
+ std::map<int,int> cap_refs;
+
+ ObjectCacher::ObjectSet oset; // ORDER DEPENDENCY: ino
+
+ uint64_t reported_size = 0;
+ uint64_t wanted_max_size = 0;
+ uint64_t requested_max_size = 0;
+
+ uint64_t ll_ref = 0; // separate ref count for ll client
+ xlist<Dentry *> dentries; // if i'm linked to a dentry.
+ std::string symlink; // symlink content, if it's a symlink
+ std::map<std::string,bufferptr> xattrs;
+ std::map<frag_t,int> fragmap; // known frag -> mds mappings
+ std::map<frag_t, std::vector<mds_rank_t>> frag_repmap; // non-auth mds mappings
+
+ std::list<ceph::condition_variable*> waitfor_caps;
+ std::list<ceph::condition_variable*> waitfor_commit;
+ std::list<ceph::condition_variable*> waitfor_deleg;
+
+ Dentry *get_first_parent() {
+ ceph_assert(!dentries.empty());
+ return *dentries.begin();
+ }
+
+ void make_long_path(filepath& p);
+ void make_short_path(filepath& p);
+ void make_nosnap_relative_path(filepath& p);
+
+ // The ref count. 1 for each dentry, fh, inode_map,
+ // cwd that links to me.
+ void iget() { get(); }
+ void iput(int n=1) { ceph_assert(n >= 0); while (n--) put(); }
+
+ void ll_get() {
+ ll_ref++;
+ }
+ void ll_put(uint64_t n=1) {
+ ceph_assert(ll_ref >= n);
+ ll_ref -= n;
+ }
+
+ // file locks
+ std::unique_ptr<ceph_lock_state_t> fcntl_locks;
+ std::unique_ptr<ceph_lock_state_t> flock_locks;
+
+ bool has_any_filelocks() {
+ return
+ (fcntl_locks && !fcntl_locks->empty()) ||
+ (flock_locks && !flock_locks->empty());
+ }
+
+ std::list<Delegation> delegations;
+
+ xlist<MetaRequest*> unsafe_ops;
+
+ std::set<Fh*> fhs;
+
+ mds_rank_t dir_pin = MDS_RANK_NONE;
+
+ Inode() = delete;
+ Inode(Client *c, vinodeno_t vino, file_layout_t *newlayout)
+ : client(c), ino(vino.ino), snapid(vino.snapid), delay_cap_item(this),
+ dirty_cap_item(this), flushing_cap_item(this), snaprealm_item(this),
+ oset((void *)this, newlayout->pool_id, this->ino) {}
+ ~Inode();
+
+ vinodeno_t vino() const { return vinodeno_t(ino, snapid); }
+
+ struct Compare {
+ bool operator() (Inode* const & left, Inode* const & right) {
+ if (left->ino.val < right->ino.val) {
+ return (left->snapid.val < right->snapid.val);
+ }
+ return false;
+ }
+ };
+
+ bool check_mode(const UserPerm& perms, unsigned want);
+
+ // CAPS --------
+ void get_open_ref(int mode);
+ bool put_open_ref(int mode);
+
+ void get_cap_ref(int cap);
+ int put_cap_ref(int cap);
+ bool is_any_caps();
+ bool cap_is_valid(const Cap &cap) const;
+ int caps_issued(int *implemented = 0) const;
+ void try_touch_cap(mds_rank_t mds);
+ bool caps_issued_mask(unsigned mask, bool allow_impl=false);
+ int caps_used();
+ int caps_file_wanted();
+ int caps_wanted();
+ int caps_mds_wanted();
+ int caps_dirty();
+ const UserPerm *get_best_perms();
+
+ bool have_valid_size();
+ Dir *open_dir();
+
+ void add_fh(Fh *f) {fhs.insert(f);}
+ void rm_fh(Fh *f) {fhs.erase(f);}
+ void set_async_err(int r);
+ void dump(Formatter *f) const;
+
+ void break_all_delegs() { break_deleg(false); };
+
+ void recall_deleg(bool skip_read);
+ bool has_recalled_deleg();
+ int set_deleg(Fh *fh, unsigned type, ceph_deleg_cb_t cb, void *priv);
+ void unset_deleg(Fh *fh);
+
+ void mark_caps_dirty(int caps);
+ void mark_caps_clean();
+private:
+ // how many opens for write on this Inode?
+ long open_count_for_write()
+ {
+ return (long)(open_by_mode[CEPH_FILE_MODE_RDWR] +
+ open_by_mode[CEPH_FILE_MODE_WR]);
+ };
+
+ // how many opens of any sort on this inode?
+ long open_count()
+ {
+ return (long) std::accumulate(open_by_mode.begin(), open_by_mode.end(), 0,
+ [] (int value, const std::map<int, int>::value_type& p)
+ { return value + p.second; });
+ };
+
+ void break_deleg(bool skip_read);
+ bool delegations_broken(bool skip_read);
+
+};
+
+std::ostream& operator<<(std::ostream &out, const Inode &in);
+
+#endif
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