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Diffstat (limited to 'src/client/Client.h')
| -rw-r--r-- | src/client/Client.h | 1310 |
1 files changed, 1310 insertions, 0 deletions
diff --git a/src/client/Client.h b/src/client/Client.h new file mode 100644 index 00000000..62b91190 --- /dev/null +++ b/src/client/Client.h @@ -0,0 +1,1310 @@ +// -*- 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. + * + */ + + +#ifndef CEPH_CLIENT_H +#define CEPH_CLIENT_H + +#include "common/CommandTable.h" +#include "common/Finisher.h" +#include "common/Mutex.h" +#include "common/Timer.h" +#include "common/cmdparse.h" +#include "common/compiler_extensions.h" +#include "include/cephfs/ceph_ll_client.h" +#include "include/filepath.h" +#include "include/interval_set.h" +#include "include/lru.h" +#include "include/types.h" +#include "include/unordered_map.h" +#include "include/unordered_set.h" +#include "mds/mdstypes.h" +#include "msg/Dispatcher.h" +#include "msg/MessageRef.h" +#include "msg/Messenger.h" +#include "osdc/ObjectCacher.h" + +#include "InodeRef.h" +#include "MetaSession.h" +#include "UserPerm.h" + +#include <fstream> +#include <map> +#include <memory> +#include <set> +#include <string> + +using std::set; +using std::map; +using std::fstream; + +class FSMap; +class FSMapUser; +class MonClient; + +class CephContext; + +struct DirStat; +struct LeaseStat; +struct InodeStat; + +class Filer; +class Objecter; +class WritebackHandler; + +class PerfCounters; +class MDSMap; +class Message; + +enum { + l_c_first = 20000, + l_c_reply, + l_c_lat, + l_c_wrlat, + l_c_read, + l_c_fsync, + l_c_last, +}; + + +class MDSCommandOp : public CommandOp +{ + public: + mds_gid_t mds_gid; + + explicit MDSCommandOp(ceph_tid_t t) : CommandOp(t) {} +}; + +/* error code for ceph_fuse */ +#define CEPH_FUSE_NO_MDS_UP -((1<<16)+0) /* no mds up deteced in ceph_fuse */ +#define CEPH_FUSE_LAST -((1<<16)+1) /* (unused) */ + +// ============================================ +// types for my local metadata cache +/* basic structure: + + - Dentries live in an LRU loop. they get expired based on last access. + see include/lru.h. items can be bumped to "mid" or "top" of list, etc. + - Inode has ref count for each Fh, Dir, or Dentry that points to it. + - when Inode ref goes to 0, it's expired. + - when Dir is empty, it's removed (and it's Inode ref--) + +*/ + +/* getdir result */ +struct DirEntry { + explicit DirEntry(const string &s) : d_name(s), stmask(0) {} + DirEntry(const string &n, struct stat& s, int stm) : d_name(n), st(s), stmask(stm) {} + + string d_name; + struct stat st; + int stmask; +}; + +struct Cap; +class Dir; +class Dentry; +struct SnapRealm; +struct Fh; +struct CapSnap; + +struct MetaRequest; +class ceph_lock_state_t; + +// ======================================================== +// client interface + +struct dir_result_t { + static const int SHIFT = 28; + static const int64_t MASK = (1 << SHIFT) - 1; + static const int64_t HASH = 0xFFULL << (SHIFT + 24); // impossible frag bits + static const loff_t END = 1ULL << (SHIFT + 32); + + struct dentry { + int64_t offset; + string name; + InodeRef inode; + explicit dentry(int64_t o) : offset(o) {} + dentry(int64_t o, const string& n, const InodeRef& in) : + offset(o), name(n), inode(in) {} + }; + struct dentry_off_lt { + bool operator()(const dentry& d, int64_t off) const { + return dir_result_t::fpos_cmp(d.offset, off) < 0; + } + }; + + + explicit dir_result_t(Inode *in, const UserPerm& perms); + + + static uint64_t make_fpos(unsigned h, unsigned l, bool hash) { + uint64_t v = ((uint64_t)h<< SHIFT) | (uint64_t)l; + if (hash) + v |= HASH; + else + ceph_assert((v & HASH) != HASH); + return v; + } + static unsigned fpos_high(uint64_t p) { + unsigned v = (p & (END-1)) >> SHIFT; + if ((p & HASH) == HASH) + return ceph_frag_value(v); + return v; + } + static unsigned fpos_low(uint64_t p) { + return p & MASK; + } + static int fpos_cmp(uint64_t l, uint64_t r) { + int c = ceph_frag_compare(fpos_high(l), fpos_high(r)); + if (c) + return c; + if (fpos_low(l) == fpos_low(r)) + return 0; + return fpos_low(l) < fpos_low(r) ? -1 : 1; + } + + unsigned offset_high() { return fpos_high(offset); } + unsigned offset_low() { return fpos_low(offset); } + + void set_end() { offset |= END; } + bool at_end() { return (offset & END); } + + void set_hash_order() { offset |= HASH; } + bool hash_order() { return (offset & HASH) == HASH; } + + bool is_cached() { + if (buffer.empty()) + return false; + if (hash_order()) { + return buffer_frag.contains(offset_high()); + } else { + return buffer_frag == frag_t(offset_high()); + } + } + + void reset() { + last_name.clear(); + next_offset = 2; + offset = 0; + ordered_count = 0; + cache_index = 0; + buffer.clear(); + } + + InodeRef inode; + int64_t offset; // hash order: + // (0xff << 52) | ((24 bits hash) << 28) | + // (the nth entry has hash collision); + // frag+name order; + // ((frag value) << 28) | (the nth entry in frag); + + unsigned next_offset; // offset of next chunk (last_name's + 1) + string last_name; // last entry in previous chunk + + uint64_t release_count; + uint64_t ordered_count; + unsigned cache_index; + int start_shared_gen; // dir shared_gen at start of readdir + UserPerm perms; + + frag_t buffer_frag; + + vector<dentry> buffer; + struct dirent de; +}; + +class Client : public Dispatcher, public md_config_obs_t { +public: + friend class C_Block_Sync; // Calls block map and protected helpers + friend class C_Client_CacheInvalidate; // calls ino_invalidate_cb + friend class C_Client_DentryInvalidate; // calls dentry_invalidate_cb + friend class C_Client_FlushComplete; // calls put_inode() + friend class C_Client_Remount; + friend class C_Client_RequestInterrupt; + friend class C_Deleg_Timeout; // Asserts on client_lock, called when a delegation is unreturned + friend class C_Client_CacheRelease; // Asserts on client_lock + friend class SyntheticClient; + friend void intrusive_ptr_release(Inode *in); + + using Dispatcher::cct; + + typedef int (*add_dirent_cb_t)(void *p, struct dirent *de, struct ceph_statx *stx, off_t off, Inode *in); + + class CommandHook : public AdminSocketHook { + public: + explicit CommandHook(Client *client); + bool call(std::string_view command, const cmdmap_t& cmdmap, + std::string_view format, bufferlist& out) override; + private: + Client *m_client; + }; + + Client(Messenger *m, MonClient *mc, Objecter *objecter_); + Client(const Client&) = delete; + Client(const Client&&) = delete; + virtual ~Client() override; + + static UserPerm pick_my_perms(CephContext *c) { + uid_t uid = c->_conf->client_mount_uid >= 0 ? c->_conf->client_mount_uid : -1; + gid_t gid = c->_conf->client_mount_gid >= 0 ? c->_conf->client_mount_gid : -1; + return UserPerm(uid, gid); + } + UserPerm pick_my_perms() { + uid_t uid = user_id >= 0 ? user_id : -1; + gid_t gid = group_id >= 0 ? group_id : -1; + return UserPerm(uid, gid); + } + + int mount(const std::string &mount_root, const UserPerm& perms, + bool require_mds=false, const std::string &fs_name=""); + void unmount(); + void abort_conn(); + + void set_uuid(const std::string& uuid); + void set_session_timeout(unsigned timeout); + int start_reclaim(const std::string& uuid, unsigned flags, + const std::string& fs_name); + void finish_reclaim(); + + fs_cluster_id_t get_fs_cid() { + return fscid; + } + + int mds_command( + const std::string &mds_spec, + const std::vector<std::string>& cmd, + const bufferlist& inbl, + bufferlist *poutbl, std::string *prs, Context *onfinish); + + // these should (more or less) mirror the actual system calls. + int statfs(const char *path, struct statvfs *stbuf, const UserPerm& perms); + + // crap + int chdir(const char *s, std::string &new_cwd, const UserPerm& perms); + void _getcwd(std::string& cwd, const UserPerm& perms); + void getcwd(std::string& cwd, const UserPerm& perms); + + // namespace ops + int opendir(const char *name, dir_result_t **dirpp, const UserPerm& perms); + int closedir(dir_result_t *dirp); + + /** + * Fill a directory listing from dirp, invoking cb for each entry + * with the given pointer, the dirent, the struct stat, the stmask, + * and the offset. + * + * Returns 0 if it reached the end of the directory. + * If @a cb returns a negative error code, stop and return that. + */ + int readdir_r_cb(dir_result_t *dirp, add_dirent_cb_t cb, void *p, + unsigned want=0, unsigned flags=AT_NO_ATTR_SYNC, + bool getref=false); + + struct dirent * readdir(dir_result_t *d); + int readdir_r(dir_result_t *dirp, struct dirent *de); + int readdirplus_r(dir_result_t *dirp, struct dirent *de, struct ceph_statx *stx, unsigned want, unsigned flags, Inode **out); + + int getdir(const char *relpath, list<string>& names, + const UserPerm& perms); // get the whole dir at once. + + /** + * Returns the length of the buffer that got filled in, or -errno. + * If it returns -ERANGE you just need to increase the size of the + * buffer and try again. + */ + int _getdents(dir_result_t *dirp, char *buf, int buflen, bool ful); // get a bunch of dentries at once + int getdents(dir_result_t *dirp, char *buf, int buflen) { + return _getdents(dirp, buf, buflen, true); + } + int getdnames(dir_result_t *dirp, char *buf, int buflen) { + return _getdents(dirp, buf, buflen, false); + } + + void rewinddir(dir_result_t *dirp); + loff_t telldir(dir_result_t *dirp); + void seekdir(dir_result_t *dirp, loff_t offset); + + int link(const char *existing, const char *newname, const UserPerm& perm); + int unlink(const char *path, const UserPerm& perm); + int rename(const char *from, const char *to, const UserPerm& perm); + + // dirs + int mkdir(const char *path, mode_t mode, const UserPerm& perm); + int mkdirs(const char *path, mode_t mode, const UserPerm& perms); + int rmdir(const char *path, const UserPerm& perms); + + // symlinks + int readlink(const char *path, char *buf, loff_t size, const UserPerm& perms); + + int symlink(const char *existing, const char *newname, const UserPerm& perms); + + // inode stuff + unsigned statx_to_mask(unsigned int flags, unsigned int want); + int stat(const char *path, struct stat *stbuf, const UserPerm& perms, + frag_info_t *dirstat=0, int mask=CEPH_STAT_CAP_INODE_ALL); + int statx(const char *path, struct ceph_statx *stx, + const UserPerm& perms, + unsigned int want, unsigned int flags); + int lstat(const char *path, struct stat *stbuf, const UserPerm& perms, + frag_info_t *dirstat=0, int mask=CEPH_STAT_CAP_INODE_ALL); + + int setattr(const char *relpath, struct stat *attr, int mask, + const UserPerm& perms); + int setattrx(const char *relpath, struct ceph_statx *stx, int mask, + const UserPerm& perms, int flags=0); + int fsetattr(int fd, struct stat *attr, int mask, const UserPerm& perms); + int fsetattrx(int fd, struct ceph_statx *stx, int mask, const UserPerm& perms); + int chmod(const char *path, mode_t mode, const UserPerm& perms); + int fchmod(int fd, mode_t mode, const UserPerm& perms); + int lchmod(const char *path, mode_t mode, const UserPerm& perms); + int chown(const char *path, uid_t new_uid, gid_t new_gid, + const UserPerm& perms); + int fchown(int fd, uid_t new_uid, gid_t new_gid, const UserPerm& perms); + int lchown(const char *path, uid_t new_uid, gid_t new_gid, + const UserPerm& perms); + int utime(const char *path, struct utimbuf *buf, const UserPerm& perms); + int lutime(const char *path, struct utimbuf *buf, const UserPerm& perms); + int futime(int fd, struct utimbuf *buf, const UserPerm& perms); + int utimes(const char *relpath, struct timeval times[2], const UserPerm& perms); + int lutimes(const char *relpath, struct timeval times[2], const UserPerm& perms); + int futimes(int fd, struct timeval times[2], const UserPerm& perms); + int futimens(int fd, struct timespec times[2], const UserPerm& perms); + int flock(int fd, int operation, uint64_t owner); + int truncate(const char *path, loff_t size, const UserPerm& perms); + + // file ops + int mknod(const char *path, mode_t mode, const UserPerm& perms, dev_t rdev=0); + int open(const char *path, int flags, const UserPerm& perms, mode_t mode=0); + int open(const char *path, int flags, const UserPerm& perms, + mode_t mode, int stripe_unit, int stripe_count, int object_size, + const char *data_pool); + int lookup_hash(inodeno_t ino, inodeno_t dirino, const char *name, + const UserPerm& perms); + int lookup_ino(inodeno_t ino, const UserPerm& perms, Inode **inode=NULL); + int lookup_name(Inode *in, Inode *parent, const UserPerm& perms); + int close(int fd); + loff_t lseek(int fd, loff_t offset, int whence); + int read(int fd, char *buf, loff_t size, loff_t offset=-1); + int preadv(int fd, const struct iovec *iov, int iovcnt, loff_t offset=-1); + int write(int fd, const char *buf, loff_t size, loff_t offset=-1); + int pwritev(int fd, const struct iovec *iov, int iovcnt, loff_t offset=-1); + int fake_write_size(int fd, loff_t size); + int ftruncate(int fd, loff_t size, const UserPerm& perms); + int fsync(int fd, bool syncdataonly); + int fstat(int fd, struct stat *stbuf, const UserPerm& perms, + int mask=CEPH_STAT_CAP_INODE_ALL); + int fstatx(int fd, struct ceph_statx *stx, const UserPerm& perms, + unsigned int want, unsigned int flags); + int fallocate(int fd, int mode, loff_t offset, loff_t length); + + // full path xattr ops + int getxattr(const char *path, const char *name, void *value, size_t size, + const UserPerm& perms); + int lgetxattr(const char *path, const char *name, void *value, size_t size, + const UserPerm& perms); + int fgetxattr(int fd, const char *name, void *value, size_t size, + const UserPerm& perms); + int listxattr(const char *path, char *list, size_t size, const UserPerm& perms); + int llistxattr(const char *path, char *list, size_t size, const UserPerm& perms); + int flistxattr(int fd, char *list, size_t size, const UserPerm& perms); + int removexattr(const char *path, const char *name, const UserPerm& perms); + int lremovexattr(const char *path, const char *name, const UserPerm& perms); + int fremovexattr(int fd, const char *name, const UserPerm& perms); + int setxattr(const char *path, const char *name, const void *value, + size_t size, int flags, const UserPerm& perms); + int lsetxattr(const char *path, const char *name, const void *value, + size_t size, int flags, const UserPerm& perms); + int fsetxattr(int fd, const char *name, const void *value, size_t size, + int flags, const UserPerm& perms); + + int sync_fs(); + int64_t drop_caches(); + + // hpc lazyio + int lazyio(int fd, int enable); + int lazyio_propagate(int fd, loff_t offset, size_t count); + int lazyio_synchronize(int fd, loff_t offset, size_t count); + + // expose file layout + int describe_layout(const char *path, file_layout_t* layout, + const UserPerm& perms); + int fdescribe_layout(int fd, file_layout_t* layout); + int get_file_stripe_address(int fd, loff_t offset, vector<entity_addr_t>& address); + int get_file_extent_osds(int fd, loff_t off, loff_t *len, vector<int>& osds); + int get_osd_addr(int osd, entity_addr_t& addr); + + // expose mdsmap + int64_t get_default_pool_id(); + + // expose osdmap + int get_local_osd(); + int get_pool_replication(int64_t pool); + int64_t get_pool_id(const char *pool_name); + string get_pool_name(int64_t pool); + int get_osd_crush_location(int id, vector<pair<string, string> >& path); + + int enumerate_layout(int fd, vector<ObjectExtent>& result, + loff_t length, loff_t offset); + + int mksnap(const char *path, const char *name, const UserPerm& perm); + int rmsnap(const char *path, const char *name, const UserPerm& perm); + + // Inode permission checking + int inode_permission(Inode *in, const UserPerm& perms, unsigned want); + + // expose caps + int get_caps_issued(int fd); + int get_caps_issued(const char *path, const UserPerm& perms); + + snapid_t ll_get_snapid(Inode *in); + vinodeno_t ll_get_vino(Inode *in) { + std::lock_guard lock(client_lock); + return _get_vino(in); + } + // get inode from faked ino + Inode *ll_get_inode(ino_t ino); + Inode *ll_get_inode(vinodeno_t vino); + int ll_lookup(Inode *parent, const char *name, struct stat *attr, + Inode **out, const UserPerm& perms); + int ll_lookup_inode(struct inodeno_t ino, const UserPerm& perms, Inode **inode); + int ll_lookupx(Inode *parent, const char *name, Inode **out, + struct ceph_statx *stx, unsigned want, unsigned flags, + const UserPerm& perms); + bool ll_forget(Inode *in, uint64_t count); + bool ll_put(Inode *in); + int ll_get_snap_ref(snapid_t snap); + + int ll_getattr(Inode *in, struct stat *st, const UserPerm& perms); + int ll_getattrx(Inode *in, struct ceph_statx *stx, unsigned int want, + unsigned int flags, const UserPerm& perms); + int ll_setattrx(Inode *in, struct ceph_statx *stx, int mask, + const UserPerm& perms); + int ll_setattr(Inode *in, struct stat *st, int mask, + const UserPerm& perms); + int ll_getxattr(Inode *in, const char *name, void *value, size_t size, + const UserPerm& perms); + int ll_setxattr(Inode *in, const char *name, const void *value, size_t size, + int flags, const UserPerm& perms); + int ll_removexattr(Inode *in, const char *name, const UserPerm& perms); + int ll_listxattr(Inode *in, char *list, size_t size, const UserPerm& perms); + int ll_opendir(Inode *in, int flags, dir_result_t **dirpp, + const UserPerm& perms); + int ll_releasedir(dir_result_t* dirp); + int ll_fsyncdir(dir_result_t* dirp); + int ll_readlink(Inode *in, char *buf, size_t bufsize, const UserPerm& perms); + int ll_mknod(Inode *in, const char *name, mode_t mode, dev_t rdev, + struct stat *attr, Inode **out, const UserPerm& perms); + int 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); + int ll_mkdir(Inode *in, const char *name, mode_t mode, struct stat *attr, + Inode **out, const UserPerm& perm); + int ll_mkdirx(Inode *parent, const char *name, mode_t mode, Inode **out, + struct ceph_statx *stx, unsigned want, unsigned flags, + const UserPerm& perms); + int ll_symlink(Inode *in, const char *name, const char *value, + struct stat *attr, Inode **out, const UserPerm& perms); + int ll_symlinkx(Inode *parent, const char *name, const char *value, + Inode **out, struct ceph_statx *stx, unsigned want, + unsigned flags, const UserPerm& perms); + int ll_unlink(Inode *in, const char *name, const UserPerm& perm); + int ll_rmdir(Inode *in, const char *name, const UserPerm& perms); + int ll_rename(Inode *parent, const char *name, Inode *newparent, + const char *newname, const UserPerm& perm); + int ll_link(Inode *in, Inode *newparent, const char *newname, + const UserPerm& perm); + int ll_open(Inode *in, int flags, Fh **fh, const UserPerm& perms); + int _ll_create(Inode *parent, const char *name, mode_t mode, + int flags, InodeRef *in, int caps, Fh **fhp, + const UserPerm& perms); + int ll_create(Inode *parent, const char *name, mode_t mode, int flags, + struct stat *attr, Inode **out, Fh **fhp, + const UserPerm& perms); + int 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); + int ll_read_block(Inode *in, uint64_t blockid, char *buf, uint64_t offset, + uint64_t length, file_layout_t* layout); + + int 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); + int ll_commit_blocks(Inode *in, uint64_t offset, uint64_t length); + + int ll_statfs(Inode *in, struct statvfs *stbuf, const UserPerm& perms); + int ll_walk(const char* name, Inode **i, struct ceph_statx *stx, + unsigned int want, unsigned int flags, const UserPerm& perms); + uint32_t ll_stripe_unit(Inode *in); + int ll_file_layout(Inode *in, file_layout_t *layout); + uint64_t ll_snap_seq(Inode *in); + + int ll_read(Fh *fh, loff_t off, loff_t len, bufferlist *bl); + int ll_write(Fh *fh, loff_t off, loff_t len, const char *data); + int64_t ll_readv(struct Fh *fh, const struct iovec *iov, int iovcnt, int64_t off); + int64_t ll_writev(struct Fh *fh, const struct iovec *iov, int iovcnt, int64_t off); + loff_t ll_lseek(Fh *fh, loff_t offset, int whence); + int ll_flush(Fh *fh); + int ll_fsync(Fh *fh, bool syncdataonly); + int ll_sync_inode(Inode *in, bool syncdataonly); + int ll_fallocate(Fh *fh, int mode, int64_t offset, int64_t length); + int ll_release(Fh *fh); + int ll_getlk(Fh *fh, struct flock *fl, uint64_t owner); + int ll_setlk(Fh *fh, struct flock *fl, uint64_t owner, int sleep); + int ll_flock(Fh *fh, int cmd, uint64_t owner); + int ll_lazyio(Fh *fh, int enable); + int ll_file_layout(Fh *fh, file_layout_t *layout); + void ll_interrupt(void *d); + bool ll_handle_umask() { + return acl_type != NO_ACL; + } + + int ll_get_stripe_osd(struct Inode *in, uint64_t blockno, + file_layout_t* layout); + uint64_t ll_get_internal_offset(struct Inode *in, uint64_t blockno); + + int ll_num_osds(void); + int ll_osdaddr(int osd, uint32_t *addr); + int ll_osdaddr(int osd, char* buf, size_t size); + + void ll_register_callbacks(struct ceph_client_callback_args *args); + int test_dentry_handling(bool can_invalidate); + + const char** get_tracked_conf_keys() const override; + void handle_conf_change(const ConfigProxy& conf, + const std::set <std::string> &changed) override; + uint32_t get_deleg_timeout() { return deleg_timeout; } + int set_deleg_timeout(uint32_t timeout); + int ll_delegation(Fh *fh, unsigned cmd, ceph_deleg_cb_t cb, void *priv); + + entity_name_t get_myname() { return messenger->get_myname(); } + void wait_on_list(list<Cond*>& ls); + void signal_cond_list(list<Cond*>& ls); + + void set_filer_flags(int flags); + void clear_filer_flags(int flags); + + void tear_down_cache(); + + void update_metadata(std::string const &k, std::string const &v); + + client_t get_nodeid() { return whoami; } + + inodeno_t get_root_ino(); + Inode *get_root(); + + virtual int init(); + virtual void shutdown(); + + // messaging + void handle_mds_map(const MConstRef<MMDSMap>& m); + void handle_fs_map(const MConstRef<MFSMap>& m); + void handle_fs_map_user(const MConstRef<MFSMapUser>& m); + void handle_osd_map(const MConstRef<MOSDMap>& m); + + void handle_lease(const MConstRef<MClientLease>& m); + + // inline data + int uninline_data(Inode *in, Context *onfinish); + + // file caps + void check_cap_issue(Inode *in, unsigned issued); + void add_update_cap(Inode *in, MetaSession *session, uint64_t cap_id, + unsigned issued, unsigned wanted, unsigned seq, unsigned mseq, + inodeno_t realm, int flags, const UserPerm& perms); + void remove_cap(Cap *cap, bool queue_release); + void remove_all_caps(Inode *in); + void remove_session_caps(MetaSession *session); + int mark_caps_flushing(Inode *in, ceph_tid_t *ptid); + void adjust_session_flushing_caps(Inode *in, MetaSession *old_s, MetaSession *new_s); + void flush_caps_sync(); + void kick_flushing_caps(Inode *in, MetaSession *session); + void kick_flushing_caps(MetaSession *session); + void early_kick_flushing_caps(MetaSession *session); + int get_caps(Inode *in, int need, int want, int *have, loff_t endoff); + int get_caps_used(Inode *in); + + void maybe_update_snaprealm(SnapRealm *realm, snapid_t snap_created, snapid_t snap_highwater, + vector<snapid_t>& snaps); + + void handle_quota(const MConstRef<MClientQuota>& m); + void handle_snap(const MConstRef<MClientSnap>& m); + void handle_caps(const MConstRef<MClientCaps>& m); + void handle_cap_import(MetaSession *session, Inode *in, const MConstRef<MClientCaps>& m); + void handle_cap_export(MetaSession *session, Inode *in, const MConstRef<MClientCaps>& m); + void handle_cap_trunc(MetaSession *session, Inode *in, const MConstRef<MClientCaps>& m); + void handle_cap_flush_ack(MetaSession *session, Inode *in, Cap *cap, const MConstRef<MClientCaps>& m); + void handle_cap_flushsnap_ack(MetaSession *session, Inode *in, const MConstRef<MClientCaps>& m); + void handle_cap_grant(MetaSession *session, Inode *in, Cap *cap, const MConstRef<MClientCaps>& m); + void cap_delay_requeue(Inode *in); + + void send_cap(Inode *in, MetaSession *session, Cap *cap, int flags, + int used, int want, int retain, int flush, + ceph_tid_t flush_tid); + + void send_flush_snap(Inode *in, MetaSession *session, snapid_t follows, CapSnap& capsnap); + + void flush_snaps(Inode *in); + void get_cap_ref(Inode *in, int cap); + void put_cap_ref(Inode *in, int cap); + void wait_sync_caps(Inode *in, ceph_tid_t want); + void wait_sync_caps(ceph_tid_t want); + void queue_cap_snap(Inode *in, SnapContext &old_snapc); + void finish_cap_snap(Inode *in, CapSnap &capsnap, int used); + void _flushed_cap_snap(Inode *in, snapid_t seq); + + void _schedule_invalidate_dentry_callback(Dentry *dn, bool del); + void _async_dentry_invalidate(vinodeno_t dirino, vinodeno_t ino, string& name); + void _try_to_trim_inode(Inode *in, bool sched_inval); + + void _schedule_invalidate_callback(Inode *in, int64_t off, int64_t len); + void _invalidate_inode_cache(Inode *in); + void _invalidate_inode_cache(Inode *in, int64_t off, int64_t len); + void _async_invalidate(vinodeno_t ino, int64_t off, int64_t len); + + void _schedule_ino_release_callback(Inode *in); + void _async_inode_release(vinodeno_t ino); + + bool _release(Inode *in); + + /** + * Initiate a flush of the data associated with the given inode. + * If you specify a Context, you are responsible for holding an inode + * reference for the duration of the flush. If not, _flush() will + * take the reference for you. + * @param in The Inode whose data you wish to flush. + * @param c The Context you wish us to complete once the data is + * flushed. If already flushed, this will be called in-line. + * + * @returns true if the data was already flushed, false otherwise. + */ + bool _flush(Inode *in, Context *c); + void _flush_range(Inode *in, int64_t off, uint64_t size); + void _flushed(Inode *in); + void flush_set_callback(ObjectCacher::ObjectSet *oset); + + void close_release(Inode *in); + void close_safe(Inode *in); + + void lock_fh_pos(Fh *f); + void unlock_fh_pos(Fh *f); + + // metadata cache + void update_dir_dist(Inode *in, DirStat *st); + + void clear_dir_complete_and_ordered(Inode *diri, bool complete); + void insert_readdir_results(MetaRequest *request, MetaSession *session, Inode *diri); + Inode* insert_trace(MetaRequest *request, MetaSession *session); + void update_inode_file_size(Inode *in, int issued, uint64_t size, + uint64_t truncate_seq, uint64_t truncate_size); + void update_inode_file_time(Inode *in, int issued, uint64_t time_warp_seq, + utime_t ctime, utime_t mtime, utime_t atime); + + Inode *add_update_inode(InodeStat *st, utime_t ttl, MetaSession *session, + const UserPerm& request_perms); + Dentry *insert_dentry_inode(Dir *dir, const string& dname, LeaseStat *dlease, + Inode *in, utime_t from, MetaSession *session, + Dentry *old_dentry = NULL); + void update_dentry_lease(Dentry *dn, LeaseStat *dlease, utime_t from, MetaSession *session); + + bool use_faked_inos() { return _use_faked_inos; } + vinodeno_t map_faked_ino(ino_t ino); + + //notify the mds to flush the mdlog + void flush_mdlog_sync(); + void flush_mdlog(MetaSession *session); + + void renew_caps(); + void renew_caps(MetaSession *session); + void flush_cap_releases(); + void tick(); + + xlist<Inode*> &get_dirty_list() { return dirty_list; } + + SafeTimer timer; + + std::unique_ptr<PerfCounters> logger; + std::unique_ptr<MDSMap> mdsmap; + + bool fuse_default_permissions; + +protected: + /* Flags for check_caps() */ + static const unsigned CHECK_CAPS_NODELAY = 0x1; + static const unsigned CHECK_CAPS_SYNCHRONOUS = 0x2; + + + bool is_initialized() const { return initialized; } + + void check_caps(Inode *in, unsigned flags); + + void set_cap_epoch_barrier(epoch_t e); + + void handle_command_reply(const MConstRef<MCommandReply>& m); + int fetch_fsmap(bool user); + int resolve_mds( + const std::string &mds_spec, + std::vector<mds_gid_t> *targets); + + void get_session_metadata(std::map<std::string, std::string> *meta) const; + bool have_open_session(mds_rank_t mds); + void got_mds_push(MetaSession *s); + MetaSession *_get_mds_session(mds_rank_t mds, Connection *con); ///< return session for mds *and* con; null otherwise + MetaSession *_get_or_open_mds_session(mds_rank_t mds); + MetaSession *_open_mds_session(mds_rank_t mds); + void _close_mds_session(MetaSession *s); + void _closed_mds_session(MetaSession *s); + bool _any_stale_sessions() const; + void _kick_stale_sessions(); + void handle_client_session(const MConstRef<MClientSession>& m); + void send_reconnect(MetaSession *s); + void resend_unsafe_requests(MetaSession *s); + void wait_unsafe_requests(); + + void _sync_write_commit(Inode *in); + + void dump_mds_requests(Formatter *f); + void dump_mds_sessions(Formatter *f); + + int make_request(MetaRequest *req, const UserPerm& perms, + InodeRef *ptarget = 0, bool *pcreated = 0, + mds_rank_t use_mds=-1, bufferlist *pdirbl=0); + void put_request(MetaRequest *request); + void unregister_request(MetaRequest *request); + + int verify_reply_trace(int r, MetaRequest *request, const MConstRef<MClientReply>& reply, + InodeRef *ptarget, bool *pcreated, + const UserPerm& perms); + void encode_cap_releases(MetaRequest *request, mds_rank_t mds); + int encode_inode_release(Inode *in, MetaRequest *req, + mds_rank_t mds, int drop, + int unless,int force=0); + void encode_dentry_release(Dentry *dn, MetaRequest *req, + mds_rank_t mds, int drop, int unless); + mds_rank_t choose_target_mds(MetaRequest *req, Inode** phash_diri=NULL); + void connect_mds_targets(mds_rank_t mds); + void send_request(MetaRequest *request, MetaSession *session, + bool drop_cap_releases=false); + MRef<MClientRequest> build_client_request(MetaRequest *request); + void kick_requests(MetaSession *session); + void kick_requests_closed(MetaSession *session); + void handle_client_request_forward(const MConstRef<MClientRequestForward>& reply); + void handle_client_reply(const MConstRef<MClientReply>& reply); + bool is_dir_operation(MetaRequest *request); + + // fake inode number for 32-bits ino_t + void _assign_faked_ino(Inode *in); + void _assign_faked_root(Inode *in); + void _release_faked_ino(Inode *in); + void _reset_faked_inos(); + vinodeno_t _map_faked_ino(ino_t ino); + + // Optional extra metadata about me to send to the MDS + void populate_metadata(const std::string &mount_root); + + SnapRealm *get_snap_realm(inodeno_t r); + SnapRealm *get_snap_realm_maybe(inodeno_t r); + void put_snap_realm(SnapRealm *realm); + bool adjust_realm_parent(SnapRealm *realm, inodeno_t parent); + void update_snap_trace(const bufferlist& bl, SnapRealm **realm_ret, bool must_flush=true); + void invalidate_snaprealm_and_children(SnapRealm *realm); + + Inode *open_snapdir(Inode *diri); + + int get_fd() { + int fd = free_fd_set.range_start(); + free_fd_set.erase(fd, 1); + return fd; + } + void put_fd(int fd) { + free_fd_set.insert(fd, 1); + } + + /* + * Resolve file descriptor, or return NULL. + */ + Fh *get_filehandle(int fd) { + ceph::unordered_map<int, Fh*>::iterator p = fd_map.find(fd); + if (p == fd_map.end()) + return NULL; + return p->second; + } + + // helpers + void wake_up_session_caps(MetaSession *s, bool reconnect); + + void wait_on_context_list(list<Context*>& ls); + void signal_context_list(list<Context*>& ls); + + // -- metadata cache stuff + + // decrease inode ref. delete if dangling. + void put_inode(Inode *in, int n=1); + void close_dir(Dir *dir); + + int subscribe_mdsmap(const std::string &fs_name=""); + + void _abort_mds_sessions(int err); + + // same as unmount() but for when the client_lock is already held + void _unmount(bool abort); + + //int get_cache_size() { return lru.lru_get_size(); } + + /** + * 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* link(Dir *dir, const string& name, Inode *in, Dentry *dn); + void unlink(Dentry *dn, bool keepdir, bool keepdentry); + + // path traversal for high-level interface + int path_walk(const filepath& fp, InodeRef *end, const UserPerm& perms, + bool followsym=true, int mask=0); + + int fill_stat(Inode *in, struct stat *st, frag_info_t *dirstat=0, nest_info_t *rstat=0); + int fill_stat(InodeRef& in, struct stat *st, frag_info_t *dirstat=0, nest_info_t *rstat=0) { + return fill_stat(in.get(), st, dirstat, rstat); + } + + void fill_statx(Inode *in, unsigned int mask, struct ceph_statx *stx); + void fill_statx(InodeRef& in, unsigned int mask, struct ceph_statx *stx) { + return fill_statx(in.get(), mask, stx); + } + + void touch_dn(Dentry *dn); + + // trim cache. + void trim_cache(bool trim_kernel_dcache=false); + void trim_cache_for_reconnect(MetaSession *s); + void trim_dentry(Dentry *dn); + void trim_caps(MetaSession *s, uint64_t max); + void _invalidate_kernel_dcache(); + void _trim_negative_child_dentries(InodeRef& in); + + void dump_inode(Formatter *f, Inode *in, set<Inode*>& did, bool disconnected); + void dump_cache(Formatter *f); // debug + + // force read-only + void force_session_readonly(MetaSession *s); + + void dump_status(Formatter *f); // debug + + bool ms_dispatch2(const MessageRef& m) override; + + void ms_handle_connect(Connection *con) override; + bool ms_handle_reset(Connection *con) override; + void ms_handle_remote_reset(Connection *con) override; + bool ms_handle_refused(Connection *con) override; + bool ms_get_authorizer(int dest_type, AuthAuthorizer **authorizer) override; + + int authenticate(); + + Inode* get_quota_root(Inode *in, const UserPerm& perms); + bool check_quota_condition(Inode *in, const UserPerm& perms, + std::function<bool (const Inode &)> test); + bool is_quota_files_exceeded(Inode *in, const UserPerm& perms); + bool is_quota_bytes_exceeded(Inode *in, int64_t new_bytes, + const UserPerm& perms); + bool is_quota_bytes_approaching(Inode *in, const UserPerm& perms); + + int check_pool_perm(Inode *in, int need); + + void handle_client_reclaim_reply(const MConstRef<MClientReclaimReply>& reply); + + /** + * Call this when an OSDMap is seen with a full flag (global or per pool) + * set. + * + * @param pool the pool ID affected, or -1 if all. + */ + void _handle_full_flag(int64_t pool); + + void _close_sessions(); + + void _pre_init(); + + /** + * The basic housekeeping parts of init (perf counters, admin socket) + * that is independent of how objecters/monclient/messengers are + * being set up. + */ + void _finish_init(); + + // global client lock + // - protects Client and buffer cache both! + Mutex client_lock; + + std::map<snapid_t, int> ll_snap_ref; + + Inode* root = nullptr; + map<Inode*, InodeRef> root_parents; + Inode* root_ancestor = nullptr; + LRU lru; // lru list of Dentry's in our local metadata cache. + + InodeRef cwd; + + std::unique_ptr<Filer> filer; + std::unique_ptr<ObjectCacher> objectcacher; + std::unique_ptr<WritebackHandler> writeback_handler; + + Messenger *messenger; + MonClient *monclient; + Objecter *objecter; + + client_t whoami; + + +private: + struct C_Readahead : public Context { + C_Readahead(Client *c, Fh *f); + ~C_Readahead() override; + void finish(int r) override; + + Client *client; + Fh *f; + }; + + /* + * These define virtual xattrs exposing the recursive directory + * statistics and layout metadata. + */ + struct VXattr { + const string name; + size_t (Client::*getxattr_cb)(Inode *in, char *val, size_t size); + bool readonly, hidden; + bool (Client::*exists_cb)(Inode *in); + unsigned int flags; + }; + + enum { + NO_ACL = 0, + POSIX_ACL, + }; + + enum { + MAY_EXEC = 1, + MAY_WRITE = 2, + MAY_READ = 4, + }; + + + /* Flags for VXattr */ + static const unsigned VXATTR_RSTAT = 0x1; + static const unsigned VXATTR_DIRSTAT = 0x2; + + static const VXattr _dir_vxattrs[]; + static const VXattr _file_vxattrs[]; + static const VXattr _common_vxattrs[]; + + + + void fill_dirent(struct dirent *de, const char *name, int type, uint64_t ino, loff_t next_off); + + int _opendir(Inode *in, dir_result_t **dirpp, const UserPerm& perms); + void _readdir_drop_dirp_buffer(dir_result_t *dirp); + bool _readdir_have_frag(dir_result_t *dirp); + void _readdir_next_frag(dir_result_t *dirp); + void _readdir_rechoose_frag(dir_result_t *dirp); + int _readdir_get_frag(dir_result_t *dirp); + int _readdir_cache_cb(dir_result_t *dirp, add_dirent_cb_t cb, void *p, int caps, bool getref); + void _closedir(dir_result_t *dirp); + + // other helpers + void _fragmap_remove_non_leaves(Inode *in); + void _fragmap_remove_stopped_mds(Inode *in, mds_rank_t mds); + + void _ll_get(Inode *in); + int _ll_put(Inode *in, uint64_t num); + void _ll_drop_pins(); + + Fh *_create_fh(Inode *in, int flags, int cmode, const UserPerm& perms); + int _release_fh(Fh *fh); + void _put_fh(Fh *fh); + + int _do_remount(bool retry_on_error); + + int _read_sync(Fh *f, uint64_t off, uint64_t len, bufferlist *bl, bool *checkeof); + int _read_async(Fh *f, uint64_t off, uint64_t len, bufferlist *bl); + + // internal interface + // call these with client_lock held! + int _do_lookup(Inode *dir, const string& name, int mask, InodeRef *target, + const UserPerm& perms); + + int _lookup(Inode *dir, const string& dname, int mask, InodeRef *target, + const UserPerm& perm); + + int _link(Inode *in, Inode *dir, const char *name, const UserPerm& perm, + InodeRef *inp = 0); + int _unlink(Inode *dir, const char *name, const UserPerm& perm); + int _rename(Inode *olddir, const char *oname, Inode *ndir, const char *nname, const UserPerm& perm); + int _mkdir(Inode *dir, const char *name, mode_t mode, const UserPerm& perm, + InodeRef *inp = 0); + int _rmdir(Inode *dir, const char *name, const UserPerm& perms); + int _symlink(Inode *dir, const char *name, const char *target, + const UserPerm& perms, InodeRef *inp = 0); + int _mknod(Inode *dir, const char *name, mode_t mode, dev_t rdev, + const UserPerm& perms, InodeRef *inp = 0); + int _do_setattr(Inode *in, struct ceph_statx *stx, int mask, + const UserPerm& perms, InodeRef *inp); + void stat_to_statx(struct stat *st, struct ceph_statx *stx); + int __setattrx(Inode *in, struct ceph_statx *stx, int mask, + const UserPerm& perms, InodeRef *inp = 0); + int _setattrx(InodeRef &in, struct ceph_statx *stx, int mask, + const UserPerm& perms); + int _setattr(InodeRef &in, struct stat *attr, int mask, + const UserPerm& perms); + int _ll_setattrx(Inode *in, struct ceph_statx *stx, int mask, + const UserPerm& perms, InodeRef *inp = 0); + int _getattr(Inode *in, int mask, const UserPerm& perms, bool force=false); + int _getattr(InodeRef &in, int mask, const UserPerm& perms, bool force=false) { + return _getattr(in.get(), mask, perms, force); + } + int _readlink(Inode *in, char *buf, size_t size); + int _getxattr(Inode *in, const char *name, void *value, size_t len, + const UserPerm& perms); + int _getxattr(InodeRef &in, const char *name, void *value, size_t len, + const UserPerm& perms); + int _listxattr(Inode *in, char *names, size_t len, const UserPerm& perms); + int _do_setxattr(Inode *in, const char *name, const void *value, size_t len, + int flags, const UserPerm& perms); + int _setxattr(Inode *in, const char *name, const void *value, size_t len, + int flags, const UserPerm& perms); + int _setxattr(InodeRef &in, const char *name, const void *value, size_t len, + int flags, const UserPerm& perms); + int _setxattr_check_data_pool(string& name, string& value, const OSDMap *osdmap); + void _setxattr_maybe_wait_for_osdmap(const char *name, const void *value, size_t len); + int _removexattr(Inode *in, const char *nm, const UserPerm& perms); + int _removexattr(InodeRef &in, const char *nm, const UserPerm& perms); + int _open(Inode *in, int flags, mode_t mode, Fh **fhp, + const UserPerm& perms); + int _renew_caps(Inode *in); + int _create(Inode *in, 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); + + loff_t _lseek(Fh *fh, loff_t offset, int whence); + int64_t _read(Fh *fh, int64_t offset, uint64_t size, bufferlist *bl); + int64_t _write(Fh *fh, int64_t offset, uint64_t size, const char *buf, + const struct iovec *iov, int iovcnt); + int64_t _preadv_pwritev_locked(Fh *f, const struct iovec *iov, + unsigned iovcnt, int64_t offset, bool write, bool clamp_to_int); + int _preadv_pwritev(int fd, const struct iovec *iov, unsigned iovcnt, int64_t offset, bool write); + int _flush(Fh *fh); + int _fsync(Fh *fh, bool syncdataonly); + int _fsync(Inode *in, bool syncdataonly); + int _sync_fs(); + int _fallocate(Fh *fh, int mode, int64_t offset, int64_t length); + int _getlk(Fh *fh, struct flock *fl, uint64_t owner); + int _setlk(Fh *fh, struct flock *fl, uint64_t owner, int sleep); + int _flock(Fh *fh, int cmd, uint64_t owner); + int _lazyio(Fh *fh, int enable); + + int get_or_create(Inode *dir, const char* name, + Dentry **pdn, bool expect_null=false); + + int xattr_permission(Inode *in, const char *name, unsigned want, + const UserPerm& perms); + int may_setattr(Inode *in, struct ceph_statx *stx, int mask, + const UserPerm& perms); + int may_open(Inode *in, int flags, const UserPerm& perms); + int may_lookup(Inode *dir, const UserPerm& perms); + int may_create(Inode *dir, const UserPerm& perms); + int may_delete(Inode *dir, const char *name, const UserPerm& perms); + int may_hardlink(Inode *in, const UserPerm& perms); + + int _getattr_for_perm(Inode *in, const UserPerm& perms); + + vinodeno_t _get_vino(Inode *in); + + bool _vxattrcb_quota_exists(Inode *in); + size_t _vxattrcb_quota(Inode *in, char *val, size_t size); + size_t _vxattrcb_quota_max_bytes(Inode *in, char *val, size_t size); + size_t _vxattrcb_quota_max_files(Inode *in, char *val, size_t size); + + bool _vxattrcb_layout_exists(Inode *in); + size_t _vxattrcb_layout(Inode *in, char *val, size_t size); + size_t _vxattrcb_layout_stripe_unit(Inode *in, char *val, size_t size); + size_t _vxattrcb_layout_stripe_count(Inode *in, char *val, size_t size); + size_t _vxattrcb_layout_object_size(Inode *in, char *val, size_t size); + size_t _vxattrcb_layout_pool(Inode *in, char *val, size_t size); + size_t _vxattrcb_layout_pool_namespace(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_entries(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_files(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_subdirs(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_rentries(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_rfiles(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_rsubdirs(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_rbytes(Inode *in, char *val, size_t size); + size_t _vxattrcb_dir_rctime(Inode *in, char *val, size_t size); + + bool _vxattrcb_dir_pin_exists(Inode *in); + size_t _vxattrcb_dir_pin(Inode *in, char *val, size_t size); + + bool _vxattrcb_snap_btime_exists(Inode *in); + size_t _vxattrcb_snap_btime(Inode *in, char *val, size_t size); + + size_t _vxattrcb_cluster_fsid(Inode *in, char *val, size_t size); + size_t _vxattrcb_client_id(Inode *in, char *val, size_t size); + + static const VXattr *_get_vxattrs(Inode *in); + static const VXattr *_match_vxattr(Inode *in, const char *name); + + int _do_filelock(Inode *in, Fh *fh, int lock_type, int op, int sleep, + struct flock *fl, uint64_t owner, bool removing=false); + int _interrupt_filelock(MetaRequest *req); + void _encode_filelocks(Inode *in, bufferlist& bl); + void _release_filelocks(Fh *fh); + void _update_lock_state(struct flock *fl, uint64_t owner, ceph_lock_state_t *lock_state); + + int _posix_acl_create(Inode *dir, mode_t *mode, bufferlist& xattrs_bl, + const UserPerm& perms); + int _posix_acl_chmod(Inode *in, mode_t mode, const UserPerm& perms); + int _posix_acl_permission(Inode *in, const UserPerm& perms, unsigned want); + + mds_rank_t _get_random_up_mds() const; + + int _ll_getattr(Inode *in, int caps, const UserPerm& perms); + int _lookup_parent(Inode *in, const UserPerm& perms, Inode **parent=NULL); + int _lookup_name(Inode *in, Inode *parent, const UserPerm& perms); + int _lookup_ino(inodeno_t ino, const UserPerm& perms, Inode **inode=NULL); + bool _ll_forget(Inode *in, uint64_t count); + + + uint32_t deleg_timeout = 0; + + client_switch_interrupt_callback_t switch_interrupt_cb = nullptr; + client_remount_callback_t remount_cb = nullptr; + client_ino_callback_t ino_invalidate_cb = nullptr; + client_dentry_callback_t dentry_invalidate_cb = nullptr; + client_umask_callback_t umask_cb = nullptr; + client_ino_release_t ino_release_cb = nullptr; + void *callback_handle = nullptr; + bool can_invalidate_dentries = false; + + Finisher async_ino_invalidator; + Finisher async_dentry_invalidator; + Finisher interrupt_finisher; + Finisher remount_finisher; + Finisher async_ino_releasor; + Finisher objecter_finisher; + + Context *tick_event = nullptr; + utime_t last_cap_renew; + + CommandHook m_command_hook; + + int user_id, group_id; + int acl_type = NO_ACL; + + epoch_t cap_epoch_barrier = 0; + + // mds sessions + map<mds_rank_t, MetaSession> mds_sessions; // mds -> push seq + + std::set<mds_rank_t> mds_ranks_closing; // mds ranks currently tearing down sessions + list<Cond*> waiting_for_mdsmap; + + // FSMap, for when using mds_command + list<Cond*> waiting_for_fsmap; + std::unique_ptr<FSMap> fsmap; + std::unique_ptr<FSMapUser> fsmap_user; + + // MDS command state + CommandTable<MDSCommandOp> command_table; + + bool _use_faked_inos; + + // Cluster fsid + fs_cluster_id_t fscid; + + // file handles, etc. + interval_set<int> free_fd_set; // unused fds + ceph::unordered_map<int, Fh*> fd_map; + set<Fh*> ll_unclosed_fh_set; + ceph::unordered_set<dir_result_t*> opened_dirs; + + bool initialized = false; + bool mounted = false; + bool unmounting = false; + bool blacklisted = false; + + ceph::unordered_map<vinodeno_t, Inode*> inode_map; + ceph::unordered_map<ino_t, vinodeno_t> faked_ino_map; + interval_set<ino_t> free_faked_inos; + ino_t last_used_faked_ino; + ino_t last_used_faked_root; + + // When an MDS has sent us a REJECT, remember that and don't + // contact it again. Remember which inst rejected us, so that + // when we talk to another inst with the same rank we can + // try again. + std::map<mds_rank_t, entity_addrvec_t> rejected_by_mds; + + int local_osd = -ENXIO; + epoch_t local_osd_epoch = 0; + + int unsafe_sync_write = 0; + + // mds requests + ceph_tid_t last_tid = 0; + ceph_tid_t oldest_tid = 0; // oldest incomplete mds request, excluding setfilelock requests + map<ceph_tid_t, MetaRequest*> mds_requests; + + // cap flushing + ceph_tid_t last_flush_tid = 1; + + // dirty_list keeps all the dirty inodes before flushing. + xlist<Inode*> delayed_list, dirty_list; + int num_flushing_caps = 0; + ceph::unordered_map<inodeno_t,SnapRealm*> snap_realms; + std::map<std::string, std::string> metadata; + + // trace generation + ofstream traceout; + + Cond mount_cond, sync_cond; + + std::map<std::pair<int64_t,std::string>, int> pool_perms; + list<Cond*> waiting_for_pool_perm; + + uint64_t retries_on_invalidate = 0; + + // state reclaim + list<Cond*> waiting_for_reclaim; + int reclaim_errno = 0; + epoch_t reclaim_osd_epoch = 0; + entity_addrvec_t reclaim_target_addrs; +}; + +/** + * Specialization of Client that manages its own Objecter instance + * and handles init/shutdown of messenger/monclient + */ +class StandaloneClient : public Client +{ +public: + StandaloneClient(Messenger *m, MonClient *mc); + + ~StandaloneClient() override; + + int init() override; + void shutdown() override; +}; + +#endif |