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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#ifndef CEPH_FS_H#define CEPH_FS_H
#include <linux/ceph/msgr.h>#include <linux/ceph/rados.h>
/* * subprotocol versions. when specific messages types or high-level * protocols change, bump the affected components. we keep rev * internal cluster protocols separately from the public, * client-facing protocol. */#define CEPH_OSDC_PROTOCOL 24 /* server/client */#define CEPH_MDSC_PROTOCOL 32 /* server/client */#define CEPH_MONC_PROTOCOL 15 /* server/client */
#define CEPH_INO_ROOT 1#define CEPH_INO_CEPH 2 /* hidden .ceph dir */#define CEPH_INO_GLOBAL_SNAPREALM 3 /* global dummy snaprealm */
/* * name for "old" CephFS file systems, * see ceph.git e2b151d009640114b2565c901d6f41f6cd5ec652 */#define CEPH_OLD_FS_NAME "cephfs"
/* arbitrary limit on max # of monitors (cluster of 3 is typical) */#define CEPH_MAX_MON 31
/* * legacy ceph_file_layoute */struct ceph_file_layout_legacy { /* file -> object mapping */ __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple of page size. */ __le32 fl_stripe_count; /* over this many objects */ __le32 fl_object_size; /* until objects are this big, then move to new objects */ __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */
/* pg -> disk layout */ __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */
/* object -> pg layout */ __le32 fl_unused; /* unused; used to be preferred primary for pg (-1 for none) */ __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */} __attribute__ ((packed));
struct ceph_string;/* * ceph_file_layout - describe data layout for a file/inode */struct ceph_file_layout { /* file -> object mapping */ u32 stripe_unit; /* stripe unit, in bytes */ u32 stripe_count; /* over this many objects */ u32 object_size; /* until objects are this big */ s64 pool_id; /* rados pool id */ struct ceph_string __rcu *pool_ns; /* rados pool namespace */};
extern int ceph_file_layout_is_valid(const struct ceph_file_layout *layout);extern void ceph_file_layout_from_legacy(struct ceph_file_layout *fl, struct ceph_file_layout_legacy *legacy);extern void ceph_file_layout_to_legacy(struct ceph_file_layout *fl, struct ceph_file_layout_legacy *legacy);
#define CEPH_MIN_STRIPE_UNIT 65536
struct ceph_dir_layout { __u8 dl_dir_hash; /* see ceph_hash.h for ids */ __u8 dl_unused1; __u16 dl_unused2; __u32 dl_unused3;} __attribute__ ((packed));
/* crypto algorithms */#define CEPH_CRYPTO_NONE 0x0#define CEPH_CRYPTO_AES 0x1#define CEPH_CRYPTO_AES256KRB5 0x2 /* AES256-CTS-HMAC384-192 */
#define CEPH_AES_IV "cephsageyudagreg"
/* security/authentication protocols */#define CEPH_AUTH_UNKNOWN 0x0#define CEPH_AUTH_NONE 0x1#define CEPH_AUTH_CEPHX 0x2
#define CEPH_AUTH_MODE_NONE 0#define CEPH_AUTH_MODE_AUTHORIZER 1#define CEPH_AUTH_MODE_MON 10
/* msgr2 protocol modes */#define CEPH_CON_MODE_UNKNOWN 0x0#define CEPH_CON_MODE_CRC 0x1#define CEPH_CON_MODE_SECURE 0x2
#define CEPH_AUTH_UID_DEFAULT ((__u64) -1)
const char *ceph_auth_proto_name(int proto);const char *ceph_con_mode_name(int mode);
/********************************************* * message layer */
/* * message types */
/* misc */#define CEPH_MSG_SHUTDOWN 1#define CEPH_MSG_PING 2
/* client <-> monitor */#define CEPH_MSG_MON_MAP 4#define CEPH_MSG_MON_GET_MAP 5#define CEPH_MSG_STATFS 13#define CEPH_MSG_STATFS_REPLY 14#define CEPH_MSG_MON_SUBSCRIBE 15#define CEPH_MSG_MON_SUBSCRIBE_ACK 16#define CEPH_MSG_AUTH 17#define CEPH_MSG_AUTH_REPLY 18#define CEPH_MSG_MON_GET_VERSION 19#define CEPH_MSG_MON_GET_VERSION_REPLY 20
/* client <-> mds */#define CEPH_MSG_MDS_MAP 21#define CEPH_MSG_FS_MAP_USER 103
#define CEPH_MSG_CLIENT_SESSION 22#define CEPH_MSG_CLIENT_RECONNECT 23
#define CEPH_MSG_CLIENT_REQUEST 24#define CEPH_MSG_CLIENT_REQUEST_FORWARD 25#define CEPH_MSG_CLIENT_REPLY 26#define CEPH_MSG_CLIENT_METRICS 29#define CEPH_MSG_CLIENT_CAPS 0x310#define CEPH_MSG_CLIENT_LEASE 0x311#define CEPH_MSG_CLIENT_SNAP 0x312#define CEPH_MSG_CLIENT_CAPRELEASE 0x313#define CEPH_MSG_CLIENT_QUOTA 0x314
/* pool ops */#define CEPH_MSG_POOLOP_REPLY 48#define CEPH_MSG_POOLOP 49
/* mon commands */#define CEPH_MSG_MON_COMMAND 50#define CEPH_MSG_MON_COMMAND_ACK 51
/* osd */#define CEPH_MSG_OSD_MAP 41#define CEPH_MSG_OSD_OP 42#define CEPH_MSG_OSD_OPREPLY 43#define CEPH_MSG_WATCH_NOTIFY 44#define CEPH_MSG_OSD_BACKOFF 61
/* watch-notify operations */enum { CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */ CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */ CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */};
struct ceph_mon_request_header { __le64 have_version; __le16 session_mon; __le64 session_mon_tid;} __attribute__ ((packed));
struct ceph_mon_statfs { struct ceph_mon_request_header monhdr; struct ceph_fsid fsid; __u8 contains_data_pool; __le64 data_pool;} __attribute__ ((packed));
struct ceph_statfs { __le64 kb, kb_used, kb_avail; __le64 num_objects;} __attribute__ ((packed));
struct ceph_mon_statfs_reply { struct ceph_fsid fsid; __le64 version; struct ceph_statfs st;} __attribute__ ((packed));
struct ceph_mon_command { struct ceph_mon_request_header monhdr; struct ceph_fsid fsid; __le32 num_strs; /* always 1 */ __le32 str_len; char str[];} __attribute__ ((packed));
struct ceph_osd_getmap { struct ceph_mon_request_header monhdr; struct ceph_fsid fsid; __le32 start;} __attribute__ ((packed));
struct ceph_mds_getmap { struct ceph_mon_request_header monhdr; struct ceph_fsid fsid;} __attribute__ ((packed));
struct ceph_client_mount { struct ceph_mon_request_header monhdr;} __attribute__ ((packed));
#define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
struct ceph_mon_subscribe_item { __le64 start; __u8 flags;} __attribute__ ((packed));
struct ceph_mon_subscribe_ack { __le32 duration; /* seconds */ struct ceph_fsid fsid;} __attribute__ ((packed));
#define CEPH_FS_CLUSTER_ID_NONE -1
/* * mdsmap flags */#define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */
/* * mds states * > 0 -> in * <= 0 -> out */#define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */#define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. empty log. */#define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */#define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */#define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */#define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */#define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */#define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */
#define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */#define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed operations (import, rename, etc.) */#define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */#define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */#define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */#define CEPH_MDS_STATE_ACTIVE 13 /* up, active */#define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
extern const char *ceph_mds_state_name(int s);
/* * metadata lock types. * - these are bitmasks.. we can compose them * - they also define the lock ordering by the MDS * - a few of these are internal to the mds */#define CEPH_LOCK_DVERSION 1#define CEPH_LOCK_DN 2#define CEPH_LOCK_ISNAP 16#define CEPH_LOCK_IVERSION 32 /* mds internal */#define CEPH_LOCK_IFILE 64#define CEPH_LOCK_IAUTH 128#define CEPH_LOCK_ILINK 256#define CEPH_LOCK_IDFT 512 /* dir frag tree */#define CEPH_LOCK_INEST 1024 /* mds internal */#define CEPH_LOCK_IXATTR 2048#define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */#define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */#define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */
/* client_session ops */enum { CEPH_SESSION_REQUEST_OPEN, CEPH_SESSION_OPEN, CEPH_SESSION_REQUEST_CLOSE, CEPH_SESSION_CLOSE, CEPH_SESSION_REQUEST_RENEWCAPS, CEPH_SESSION_RENEWCAPS, CEPH_SESSION_STALE, CEPH_SESSION_RECALL_STATE, CEPH_SESSION_FLUSHMSG, CEPH_SESSION_FLUSHMSG_ACK, CEPH_SESSION_FORCE_RO, CEPH_SESSION_REJECT, CEPH_SESSION_REQUEST_FLUSH_MDLOG,};
#define CEPH_SESSION_BLOCKLISTED (1 << 0) /* session blocklisted */
extern const char *ceph_session_op_name(int op);
struct ceph_mds_session_head { __le32 op; __le64 seq; struct ceph_timespec stamp; __le32 max_caps, max_leases;} __attribute__ ((packed));
/* client_request *//* * metadata ops. * & 0x001000 -> write op * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). & & 0x100000 -> use weird ino/path trace */#define CEPH_MDS_OP_WRITE 0x001000enum { CEPH_MDS_OP_LOOKUP = 0x00100, CEPH_MDS_OP_GETATTR = 0x00101, CEPH_MDS_OP_LOOKUPHASH = 0x00102, CEPH_MDS_OP_LOOKUPPARENT = 0x00103, CEPH_MDS_OP_LOOKUPINO = 0x00104, CEPH_MDS_OP_LOOKUPNAME = 0x00105, CEPH_MDS_OP_GETVXATTR = 0x00106,
CEPH_MDS_OP_SETXATTR = 0x01105, CEPH_MDS_OP_RMXATTR = 0x01106, CEPH_MDS_OP_SETLAYOUT = 0x01107, CEPH_MDS_OP_SETATTR = 0x01108, CEPH_MDS_OP_SETFILELOCK= 0x01109, CEPH_MDS_OP_GETFILELOCK= 0x00110, CEPH_MDS_OP_SETDIRLAYOUT=0x0110a,
CEPH_MDS_OP_MKNOD = 0x01201, CEPH_MDS_OP_LINK = 0x01202, CEPH_MDS_OP_UNLINK = 0x01203, CEPH_MDS_OP_RENAME = 0x01204, CEPH_MDS_OP_MKDIR = 0x01220, CEPH_MDS_OP_RMDIR = 0x01221, CEPH_MDS_OP_SYMLINK = 0x01222,
CEPH_MDS_OP_CREATE = 0x01301, CEPH_MDS_OP_OPEN = 0x00302, CEPH_MDS_OP_READDIR = 0x00305,
CEPH_MDS_OP_LOOKUPSNAP = 0x00400, CEPH_MDS_OP_MKSNAP = 0x01400, CEPH_MDS_OP_RMSNAP = 0x01401, CEPH_MDS_OP_LSSNAP = 0x00402, CEPH_MDS_OP_RENAMESNAP = 0x01403,};
#define IS_CEPH_MDS_OP_NEWINODE(op) (op == CEPH_MDS_OP_CREATE || \ op == CEPH_MDS_OP_MKNOD || \ op == CEPH_MDS_OP_MKDIR || \ op == CEPH_MDS_OP_SYMLINK)
extern const char *ceph_mds_op_name(int op);
#define CEPH_SETATTR_MODE (1 << 0)#define CEPH_SETATTR_UID (1 << 1)#define CEPH_SETATTR_GID (1 << 2)#define CEPH_SETATTR_MTIME (1 << 3)#define CEPH_SETATTR_ATIME (1 << 4)#define CEPH_SETATTR_SIZE (1 << 5)#define CEPH_SETATTR_CTIME (1 << 6)#define CEPH_SETATTR_MTIME_NOW (1 << 7)#define CEPH_SETATTR_ATIME_NOW (1 << 8)#define CEPH_SETATTR_BTIME (1 << 9)#define CEPH_SETATTR_KILL_SGUID (1 << 10)#define CEPH_SETATTR_FSCRYPT_AUTH (1 << 11)#define CEPH_SETATTR_FSCRYPT_FILE (1 << 12)
/* * Ceph setxattr request flags. */#define CEPH_XATTR_CREATE (1 << 0)#define CEPH_XATTR_REPLACE (1 << 1)#define CEPH_XATTR_REMOVE (1 << 31)
/* * readdir request flags; */#define CEPH_READDIR_REPLY_BITFLAGS (1<<0)
/* * readdir reply flags. */#define CEPH_READDIR_FRAG_END (1<<0)#define CEPH_READDIR_FRAG_COMPLETE (1<<8)#define CEPH_READDIR_HASH_ORDER (1<<9)#define CEPH_READDIR_OFFSET_HASH (1<<10)
/* * open request flags */#define CEPH_O_RDONLY 00000000#define CEPH_O_WRONLY 00000001#define CEPH_O_RDWR 00000002#define CEPH_O_CREAT 00000100#define CEPH_O_EXCL 00000200#define CEPH_O_TRUNC 00001000#define CEPH_O_DIRECTORY 00200000#define CEPH_O_NOFOLLOW 00400000
union ceph_mds_request_args { struct { __le32 mask; /* CEPH_CAP_* */ } __attribute__ ((packed)) getattr; struct { __le32 mode; __le32 uid; __le32 gid; struct ceph_timespec mtime; struct ceph_timespec atime; __le64 size, old_size; /* old_size needed by truncate */ __le32 mask; /* CEPH_SETATTR_* */ } __attribute__ ((packed)) setattr; struct { __le32 frag; /* which dir fragment */ __le32 max_entries; /* how many dentries to grab */ __le32 max_bytes; __le16 flags; __le32 offset_hash; } __attribute__ ((packed)) readdir; struct { __le32 mode; __le32 rdev; } __attribute__ ((packed)) mknod; struct { __le32 mode; } __attribute__ ((packed)) mkdir; struct { __le32 flags; __le32 mode; __le32 stripe_unit; /* layout for newly created file */ __le32 stripe_count; /* ... */ __le32 object_size; __le32 pool; __le32 mask; /* CEPH_CAP_* */ __le64 old_size; } __attribute__ ((packed)) open; struct { __le32 flags; __le32 osdmap_epoch; /* used for setting file/dir layouts */ } __attribute__ ((packed)) setxattr; struct { struct ceph_file_layout_legacy layout; } __attribute__ ((packed)) setlayout; struct { __u8 rule; /* currently fcntl or flock */ __u8 type; /* shared, exclusive, remove*/ __le64 owner; /* owner of the lock */ __le64 pid; /* process id requesting the lock */ __le64 start; /* initial location to lock */ __le64 length; /* num bytes to lock from start */ __u8 wait; /* will caller wait for lock to become available? */ } __attribute__ ((packed)) filelock_change; struct { __le32 mask; /* CEPH_CAP_* */ __le64 snapid; __le64 parent; __le32 hash; } __attribute__ ((packed)) lookupino;} __attribute__ ((packed));
union ceph_mds_request_args_ext { union ceph_mds_request_args old; struct { __le32 mode; __le32 uid; __le32 gid; struct ceph_timespec mtime; struct ceph_timespec atime; __le64 size, old_size; /* old_size needed by truncate */ __le32 mask; /* CEPH_SETATTR_* */ struct ceph_timespec btime; } __attribute__ ((packed)) setattr_ext;};
#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */#define CEPH_MDS_FLAG_ASYNC 4 /* request is asynchronous */
struct ceph_mds_request_head_legacy { __le64 oldest_client_tid; __le32 mdsmap_epoch; /* on client */ __le32 flags; /* CEPH_MDS_FLAG_* */ __u8 num_retry, num_fwd; /* count retry, fwd attempts */ __le16 num_releases; /* # include cap/lease release records */ __le32 op; /* mds op code */ __le32 caller_uid, caller_gid; __le64 ino; /* use this ino for openc, mkdir, mknod, etc. (if replaying) */ union ceph_mds_request_args args;} __attribute__ ((packed));
#define CEPH_MDS_REQUEST_HEAD_VERSION 3
struct ceph_mds_request_head { __le16 version; /* struct version */ __le64 oldest_client_tid; __le32 mdsmap_epoch; /* on client */ __le32 flags; /* CEPH_MDS_FLAG_* */ __u8 num_retry, num_fwd; /* legacy count retry and fwd attempts */ __le16 num_releases; /* # include cap/lease release records */ __le32 op; /* mds op code */ __le32 caller_uid, caller_gid; __le64 ino; /* use this ino for openc, mkdir, mknod, etc. (if replaying) */ union ceph_mds_request_args_ext args;
__le32 ext_num_retry; /* new count retry attempts */ __le32 ext_num_fwd; /* new count fwd attempts */
__le32 struct_len; /* to store size of struct ceph_mds_request_head */ __le32 owner_uid, owner_gid; /* used for OPs which create inodes */} __attribute__ ((packed));
/* cap/lease release record */struct ceph_mds_request_release { __le64 ino, cap_id; /* ino and unique cap id */ __le32 caps, wanted; /* new issued, wanted */ __le32 seq, issue_seq, mseq; __le32 dname_seq; /* if releasing a dentry lease, a */ __le32 dname_len; /* string follows. */} __attribute__ ((packed));
/* client reply */struct ceph_mds_reply_head { __le32 op; __le32 result; __le32 mdsmap_epoch; __u8 safe; /* true if committed to disk */ __u8 is_dentry, is_target; /* true if dentry, target inode records are included with reply */} __attribute__ ((packed));
/* one for each node split */struct ceph_frag_tree_split { __le32 frag; /* this frag splits... */ __le32 by; /* ...by this many bits */} __attribute__ ((packed));
struct ceph_frag_tree_head { __le32 nsplits; /* num ceph_frag_tree_split records */ struct ceph_frag_tree_split splits[];} __attribute__ ((packed));
/* capability issue, for bundling with mds reply */struct ceph_mds_reply_cap { __le32 caps, wanted; /* caps issued, wanted */ __le64 cap_id; __le32 seq, mseq; __le64 realm; /* snap realm */ __u8 flags; /* CEPH_CAP_FLAG_* */} __attribute__ ((packed));
#define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */#define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */
/* inode record, for bundling with mds reply */struct ceph_mds_reply_inode { __le64 ino; __le64 snapid; __le32 rdev; __le64 version; /* inode version */ __le64 xattr_version; /* version for xattr blob */ struct ceph_mds_reply_cap cap; /* caps issued for this inode */ struct ceph_file_layout_legacy layout; struct ceph_timespec ctime, mtime, atime; __le32 time_warp_seq; __le64 size, max_size, truncate_size; __le32 truncate_seq; __le32 mode, uid, gid; __le32 nlink; __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ struct ceph_timespec rctime; struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */} __attribute__ ((packed));/* followed by frag array, symlink string, dir layout, xattr blob */
/* reply_lease follows dname, and reply_inode */struct ceph_mds_reply_lease { __le16 mask; /* lease type(s) */ __le32 duration_ms; /* lease duration */ __le32 seq;} __attribute__ ((packed));
#define CEPH_LEASE_VALID (1 | 2) /* old and new bit values */#define CEPH_LEASE_PRIMARY_LINK 4 /* primary linkage */
struct ceph_mds_reply_dirfrag { __le32 frag; /* fragment */ __le32 auth; /* auth mds, if this is a delegation point */ __le32 ndist; /* number of mds' this is replicated on */ __le32 dist[];} __attribute__ ((packed));
#define CEPH_LOCK_FCNTL 1#define CEPH_LOCK_FLOCK 2#define CEPH_LOCK_FCNTL_INTR 3#define CEPH_LOCK_FLOCK_INTR 4
#define CEPH_LOCK_SHARED 1#define CEPH_LOCK_EXCL 2#define CEPH_LOCK_UNLOCK 4
struct ceph_filelock { __le64 start;/* file offset to start lock at */ __le64 length; /* num bytes to lock; 0 for all following start */ __le64 client; /* which client holds the lock */ __le64 owner; /* owner the lock */ __le64 pid; /* process id holding the lock on the client */ __u8 type; /* shared lock, exclusive lock, or unlock */} __attribute__ ((packed));
/* file access modes */#define CEPH_FILE_MODE_PIN 0#define CEPH_FILE_MODE_RD 1#define CEPH_FILE_MODE_WR 2#define CEPH_FILE_MODE_RDWR 3 /* RD | WR */#define CEPH_FILE_MODE_LAZY 4 /* lazy io */#define CEPH_FILE_MODE_BITS 4#define CEPH_FILE_MODE_MASK ((1 << CEPH_FILE_MODE_BITS) - 1)
int ceph_flags_to_mode(int flags);
#define CEPH_INLINE_NONE ((__u64)-1)
/* capability bits */#define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
/* generic cap bits */#define CEPH_CAP_GSHARED 1 /* client can reads */#define CEPH_CAP_GEXCL 2 /* client can read and update */#define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */#define CEPH_CAP_GRD 8 /* (file) client can read */#define CEPH_CAP_GWR 16 /* (file) client can write */#define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
#define CEPH_CAP_SIMPLE_BITS 2#define CEPH_CAP_FILE_BITS 8
/* per-lock shift */#define CEPH_CAP_SAUTH 2#define CEPH_CAP_SLINK 4#define CEPH_CAP_SXATTR 6#define CEPH_CAP_SFILE 8#define CEPH_CAP_SFLOCK 20
#define CEPH_CAP_BITS 22
/* composed values */#define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)#define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)#define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)#define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)#define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)#define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)#define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)#define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)#define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK)#define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK)
/* cap masks (for getattr) */#define CEPH_STAT_CAP_INODE CEPH_CAP_PIN#define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */#define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN#define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED#define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED#define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED#define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED#define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED#define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED#define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED#define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */#define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED#define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ CEPH_CAP_AUTH_SHARED | \ CEPH_CAP_LINK_SHARED | \ CEPH_CAP_FILE_SHARED | \ CEPH_CAP_XATTR_SHARED)#define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ CEPH_CAP_FILE_RD)#define CEPH_STAT_RSTAT CEPH_CAP_FILE_WREXTEND
#define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ CEPH_CAP_LINK_SHARED | \ CEPH_CAP_XATTR_SHARED | \ CEPH_CAP_FILE_SHARED)#define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ CEPH_CAP_FILE_CACHE)
#define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ CEPH_CAP_LINK_EXCL | \ CEPH_CAP_XATTR_EXCL | \ CEPH_CAP_FILE_EXCL)#define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ CEPH_CAP_FILE_SHARED)#define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ CEPH_CAP_FILE_EXCL)#define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)#define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ CEPH_CAP_PIN)#define CEPH_CAP_ALL_FILE (CEPH_CAP_PIN | CEPH_CAP_ANY_SHARED | \ CEPH_CAP_AUTH_EXCL | CEPH_CAP_XATTR_EXCL | \ CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR)
#define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ CEPH_LOCK_IXATTR)
/* cap masks async dir operations */#define CEPH_CAP_DIR_CREATE CEPH_CAP_FILE_CACHE#define CEPH_CAP_DIR_UNLINK CEPH_CAP_FILE_RD#define CEPH_CAP_ANY_DIR_OPS (CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | \ CEPH_CAP_FILE_WREXTEND | CEPH_CAP_FILE_LAZYIO)
int ceph_caps_for_mode(int mode);
enum { CEPH_CAP_OP_GRANT, /* mds->client grant */ CEPH_CAP_OP_REVOKE, /* mds->client revoke */ CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ CEPH_CAP_OP_UPDATE, /* client->mds update */ CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ CEPH_CAP_OP_RENEW, /* client->mds renewal request */};
extern const char *ceph_cap_op_name(int op);
/* flags field in client cap messages (version >= 10) */#define CEPH_CLIENT_CAPS_SYNC (1<<0)#define CEPH_CLIENT_CAPS_NO_CAPSNAP (1<<1)#define CEPH_CLIENT_CAPS_PENDING_CAPSNAP (1<<2)
/* * caps message, used for capability callbacks, acks, requests, etc. */struct ceph_mds_caps { __le32 op; /* CEPH_CAP_OP_* */ __le64 ino, realm; __le64 cap_id; __le32 seq, issue_seq; __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ __le32 migrate_seq; __le64 snap_follows; __le32 snap_trace_len;
/* authlock */ __le32 uid, gid, mode;
/* linklock */ __le32 nlink;
/* xattrlock */ __le32 xattr_len; __le64 xattr_version;
/* a union of non-export and export bodies. */ __le64 size, max_size, truncate_size; __le32 truncate_seq; struct ceph_timespec mtime, atime, ctime; struct ceph_file_layout_legacy layout; __le32 time_warp_seq;} __attribute__ ((packed));
struct ceph_mds_cap_peer { __le64 cap_id; __le32 issue_seq; __le32 mseq; __le32 mds; __u8 flags;} __attribute__ ((packed));
/* cap release msg head */struct ceph_mds_cap_release { __le32 num; /* number of cap_items that follow */} __attribute__ ((packed));
struct ceph_mds_cap_item { __le64 ino; __le64 cap_id; __le32 migrate_seq, issue_seq;} __attribute__ ((packed));
#define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */#define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */#define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */#define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
extern const char *ceph_lease_op_name(int o);
/* lease msg header */struct ceph_mds_lease { __u8 action; /* CEPH_MDS_LEASE_* */ __le16 mask; /* which lease */ __le64 ino; __le64 first, last; /* snap range */ __le32 seq; __le32 duration_ms; /* duration of renewal */} __attribute__ ((packed));/* followed by a __le32+string for dname */
/* client reconnect */struct ceph_mds_cap_reconnect { __le64 cap_id; __le32 wanted; __le32 issued; __le64 snaprealm; __le64 pathbase; /* base ino for our path to this ino */ __le32 flock_len; /* size of flock state blob, if any */} __attribute__ ((packed));/* followed by flock blob */
struct ceph_mds_cap_reconnect_v1 { __le64 cap_id; __le32 wanted; __le32 issued; __le64 size; struct ceph_timespec mtime, atime; __le64 snaprealm; __le64 pathbase; /* base ino for our path to this ino */} __attribute__ ((packed));
struct ceph_mds_snaprealm_reconnect { __le64 ino; /* snap realm base */ __le64 seq; /* snap seq for this snap realm */ __le64 parent; /* parent realm */} __attribute__ ((packed));
/* * snaps */enum { CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ CEPH_SNAP_OP_CREATE, CEPH_SNAP_OP_DESTROY, CEPH_SNAP_OP_SPLIT,};
extern const char *ceph_snap_op_name(int o);
/* snap msg header */struct ceph_mds_snap_head { __le32 op; /* CEPH_SNAP_OP_* */ __le64 split; /* ino to split off, if any */ __le32 num_split_inos; /* # inos belonging to new child realm */ __le32 num_split_realms; /* # child realms udner new child realm */ __le32 trace_len; /* size of snap trace blob */} __attribute__ ((packed));/* followed by split ino list, then split realms, then the trace blob */
/* * encode info about a snaprealm, as viewed by a client */struct ceph_mds_snap_realm { __le64 ino; /* ino */ __le64 created; /* snap: when created */ __le64 parent; /* ino: parent realm */ __le64 parent_since; /* snap: same parent since */ __le64 seq; /* snap: version */ __le32 num_snaps; __le32 num_prior_parent_snaps;} __attribute__ ((packed));/* followed by my snap list, then prior parent snap list */
/* * quotas */struct ceph_mds_quota { __le64 ino; /* ino */ struct ceph_timespec rctime; __le64 rbytes; /* dir stats */ __le64 rfiles; __le64 rsubdirs; __u8 struct_v; /* compat */ __u8 struct_compat; __le32 struct_len; __le64 max_bytes; /* quota max. bytes */ __le64 max_files; /* quota max. files */} __attribute__ ((packed));
#endif