2 * ceph_fs.h - Ceph constants and data types to share between kernel and
5 * Most types in this file are defined as little-endian, and are
6 * primarily intended to describe data structures that pass over the
7 * wire or that are stored on disk.
15 #include <linux/ceph/msgr.h>
16 #include <linux/ceph/rados.h>
19 * subprotocol versions. when specific messages types or high-level
20 * protocols change, bump the affected components. we keep rev
21 * internal cluster protocols separately from the public,
22 * client-facing protocol.
24 #define CEPH_OSDC_PROTOCOL 24 /* server/client */
25 #define CEPH_MDSC_PROTOCOL 32 /* server/client */
26 #define CEPH_MONC_PROTOCOL 15 /* server/client */
29 #define CEPH_INO_ROOT 1
30 #define CEPH_INO_CEPH 2 /* hidden .ceph dir */
31 #define CEPH_INO_DOTDOT 3 /* used by ceph fuse for parent (..) */
33 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */
34 #define CEPH_MAX_MON 31
37 * legacy ceph_file_layoute
39 struct ceph_file_layout_legacy {
40 /* file -> object mapping */
41 __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple
43 __le32 fl_stripe_count; /* over this many objects */
44 __le32 fl_object_size; /* until objects are this big, then move to
46 __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */
48 /* pg -> disk layout */
49 __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */
51 /* object -> pg layout */
52 __le32 fl_unused; /* unused; used to be preferred primary for pg (-1 for none) */
53 __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */
54 } __attribute__ ((packed));
58 * ceph_file_layout - describe data layout for a file/inode
60 struct ceph_file_layout {
61 /* file -> object mapping */
62 u32 stripe_unit; /* stripe unit, in bytes */
63 u32 stripe_count; /* over this many objects */
64 u32 object_size; /* until objects are this big */
65 s64 pool_id; /* rados pool id */
66 struct ceph_string __rcu *pool_ns; /* rados pool namespace */
69 extern int ceph_file_layout_is_valid(const struct ceph_file_layout *layout);
70 extern void ceph_file_layout_from_legacy(struct ceph_file_layout *fl,
71 struct ceph_file_layout_legacy *legacy);
72 extern void ceph_file_layout_to_legacy(struct ceph_file_layout *fl,
73 struct ceph_file_layout_legacy *legacy);
75 #define CEPH_MIN_STRIPE_UNIT 65536
77 struct ceph_dir_layout {
78 __u8 dl_dir_hash; /* see ceph_hash.h for ids */
82 } __attribute__ ((packed));
84 /* crypto algorithms */
85 #define CEPH_CRYPTO_NONE 0x0
86 #define CEPH_CRYPTO_AES 0x1
88 #define CEPH_AES_IV "cephsageyudagreg"
90 /* security/authentication protocols */
91 #define CEPH_AUTH_UNKNOWN 0x0
92 #define CEPH_AUTH_NONE 0x1
93 #define CEPH_AUTH_CEPHX 0x2
95 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1)
98 /*********************************************
107 #define CEPH_MSG_SHUTDOWN 1
108 #define CEPH_MSG_PING 2
110 /* client <-> monitor */
111 #define CEPH_MSG_MON_MAP 4
112 #define CEPH_MSG_MON_GET_MAP 5
113 #define CEPH_MSG_STATFS 13
114 #define CEPH_MSG_STATFS_REPLY 14
115 #define CEPH_MSG_MON_SUBSCRIBE 15
116 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16
117 #define CEPH_MSG_AUTH 17
118 #define CEPH_MSG_AUTH_REPLY 18
119 #define CEPH_MSG_MON_GET_VERSION 19
120 #define CEPH_MSG_MON_GET_VERSION_REPLY 20
123 #define CEPH_MSG_MDS_MAP 21
124 #define CEPH_MSG_FS_MAP_USER 103
126 #define CEPH_MSG_CLIENT_SESSION 22
127 #define CEPH_MSG_CLIENT_RECONNECT 23
129 #define CEPH_MSG_CLIENT_REQUEST 24
130 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
131 #define CEPH_MSG_CLIENT_REPLY 26
132 #define CEPH_MSG_CLIENT_CAPS 0x310
133 #define CEPH_MSG_CLIENT_LEASE 0x311
134 #define CEPH_MSG_CLIENT_SNAP 0x312
135 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313
138 #define CEPH_MSG_POOLOP_REPLY 48
139 #define CEPH_MSG_POOLOP 49
142 #define CEPH_MSG_MON_COMMAND 50
143 #define CEPH_MSG_MON_COMMAND_ACK 51
146 #define CEPH_MSG_OSD_MAP 41
147 #define CEPH_MSG_OSD_OP 42
148 #define CEPH_MSG_OSD_OPREPLY 43
149 #define CEPH_MSG_WATCH_NOTIFY 44
152 /* watch-notify operations */
154 CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */
155 CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */
156 CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */
160 struct ceph_mon_request_header {
163 __le64 session_mon_tid;
164 } __attribute__ ((packed));
166 struct ceph_mon_statfs {
167 struct ceph_mon_request_header monhdr;
168 struct ceph_fsid fsid;
169 } __attribute__ ((packed));
172 __le64 kb, kb_used, kb_avail;
174 } __attribute__ ((packed));
176 struct ceph_mon_statfs_reply {
177 struct ceph_fsid fsid;
179 struct ceph_statfs st;
180 } __attribute__ ((packed));
182 struct ceph_mon_command {
183 struct ceph_mon_request_header monhdr;
184 struct ceph_fsid fsid;
185 __le32 num_strs; /* always 1 */
188 } __attribute__ ((packed));
190 struct ceph_osd_getmap {
191 struct ceph_mon_request_header monhdr;
192 struct ceph_fsid fsid;
194 } __attribute__ ((packed));
196 struct ceph_mds_getmap {
197 struct ceph_mon_request_header monhdr;
198 struct ceph_fsid fsid;
199 } __attribute__ ((packed));
201 struct ceph_client_mount {
202 struct ceph_mon_request_header monhdr;
203 } __attribute__ ((packed));
205 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
207 struct ceph_mon_subscribe_item {
210 } __attribute__ ((packed));
212 struct ceph_mon_subscribe_ack {
213 __le32 duration; /* seconds */
214 struct ceph_fsid fsid;
215 } __attribute__ ((packed));
217 #define CEPH_FS_CLUSTER_ID_NONE -1
222 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */
229 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
230 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
232 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
233 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
234 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
235 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
236 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
237 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */
239 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
240 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
241 operations (import, rename, etc.) */
242 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
243 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
244 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
245 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
246 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
248 extern const char *ceph_mds_state_name(int s);
252 * metadata lock types.
253 * - these are bitmasks.. we can compose them
254 * - they also define the lock ordering by the MDS
255 * - a few of these are internal to the mds
257 #define CEPH_LOCK_DVERSION 1
258 #define CEPH_LOCK_DN 2
259 #define CEPH_LOCK_ISNAP 16
260 #define CEPH_LOCK_IVERSION 32 /* mds internal */
261 #define CEPH_LOCK_IFILE 64
262 #define CEPH_LOCK_IAUTH 128
263 #define CEPH_LOCK_ILINK 256
264 #define CEPH_LOCK_IDFT 512 /* dir frag tree */
265 #define CEPH_LOCK_INEST 1024 /* mds internal */
266 #define CEPH_LOCK_IXATTR 2048
267 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
268 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
269 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */
271 /* client_session ops */
273 CEPH_SESSION_REQUEST_OPEN,
275 CEPH_SESSION_REQUEST_CLOSE,
277 CEPH_SESSION_REQUEST_RENEWCAPS,
278 CEPH_SESSION_RENEWCAPS,
280 CEPH_SESSION_RECALL_STATE,
281 CEPH_SESSION_FLUSHMSG,
282 CEPH_SESSION_FLUSHMSG_ACK,
283 CEPH_SESSION_FORCE_RO,
287 extern const char *ceph_session_op_name(int op);
289 struct ceph_mds_session_head {
292 struct ceph_timespec stamp;
293 __le32 max_caps, max_leases;
294 } __attribute__ ((packed));
299 * & 0x001000 -> write op
300 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
301 & & 0x100000 -> use weird ino/path trace
303 #define CEPH_MDS_OP_WRITE 0x001000
305 CEPH_MDS_OP_LOOKUP = 0x00100,
306 CEPH_MDS_OP_GETATTR = 0x00101,
307 CEPH_MDS_OP_LOOKUPHASH = 0x00102,
308 CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
309 CEPH_MDS_OP_LOOKUPINO = 0x00104,
310 CEPH_MDS_OP_LOOKUPNAME = 0x00105,
312 CEPH_MDS_OP_SETXATTR = 0x01105,
313 CEPH_MDS_OP_RMXATTR = 0x01106,
314 CEPH_MDS_OP_SETLAYOUT = 0x01107,
315 CEPH_MDS_OP_SETATTR = 0x01108,
316 CEPH_MDS_OP_SETFILELOCK= 0x01109,
317 CEPH_MDS_OP_GETFILELOCK= 0x00110,
318 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a,
320 CEPH_MDS_OP_MKNOD = 0x01201,
321 CEPH_MDS_OP_LINK = 0x01202,
322 CEPH_MDS_OP_UNLINK = 0x01203,
323 CEPH_MDS_OP_RENAME = 0x01204,
324 CEPH_MDS_OP_MKDIR = 0x01220,
325 CEPH_MDS_OP_RMDIR = 0x01221,
326 CEPH_MDS_OP_SYMLINK = 0x01222,
328 CEPH_MDS_OP_CREATE = 0x01301,
329 CEPH_MDS_OP_OPEN = 0x00302,
330 CEPH_MDS_OP_READDIR = 0x00305,
332 CEPH_MDS_OP_LOOKUPSNAP = 0x00400,
333 CEPH_MDS_OP_MKSNAP = 0x01400,
334 CEPH_MDS_OP_RMSNAP = 0x01401,
335 CEPH_MDS_OP_LSSNAP = 0x00402,
336 CEPH_MDS_OP_RENAMESNAP = 0x01403,
339 extern const char *ceph_mds_op_name(int op);
342 #define CEPH_SETATTR_MODE 1
343 #define CEPH_SETATTR_UID 2
344 #define CEPH_SETATTR_GID 4
345 #define CEPH_SETATTR_MTIME 8
346 #define CEPH_SETATTR_ATIME 16
347 #define CEPH_SETATTR_SIZE 32
348 #define CEPH_SETATTR_CTIME 64
351 * Ceph setxattr request flags.
353 #define CEPH_XATTR_CREATE (1 << 0)
354 #define CEPH_XATTR_REPLACE (1 << 1)
355 #define CEPH_XATTR_REMOVE (1 << 31)
358 * readdir request flags;
360 #define CEPH_READDIR_REPLY_BITFLAGS (1<<0)
363 * readdir reply flags.
365 #define CEPH_READDIR_FRAG_END (1<<0)
366 #define CEPH_READDIR_FRAG_COMPLETE (1<<8)
367 #define CEPH_READDIR_HASH_ORDER (1<<9)
369 union ceph_mds_request_args {
371 __le32 mask; /* CEPH_CAP_* */
372 } __attribute__ ((packed)) getattr;
377 struct ceph_timespec mtime;
378 struct ceph_timespec atime;
379 __le64 size, old_size; /* old_size needed by truncate */
380 __le32 mask; /* CEPH_SETATTR_* */
381 } __attribute__ ((packed)) setattr;
383 __le32 frag; /* which dir fragment */
384 __le32 max_entries; /* how many dentries to grab */
387 } __attribute__ ((packed)) readdir;
391 } __attribute__ ((packed)) mknod;
394 } __attribute__ ((packed)) mkdir;
398 __le32 stripe_unit; /* layout for newly created file */
399 __le32 stripe_count; /* ... */
401 __le32 file_replication;
402 __le32 mask; /* CEPH_CAP_* */
404 } __attribute__ ((packed)) open;
407 } __attribute__ ((packed)) setxattr;
409 struct ceph_file_layout_legacy layout;
410 } __attribute__ ((packed)) setlayout;
412 __u8 rule; /* currently fcntl or flock */
413 __u8 type; /* shared, exclusive, remove*/
414 __le64 owner; /* owner of the lock */
415 __le64 pid; /* process id requesting the lock */
416 __le64 start; /* initial location to lock */
417 __le64 length; /* num bytes to lock from start */
418 __u8 wait; /* will caller wait for lock to become available? */
419 } __attribute__ ((packed)) filelock_change;
420 } __attribute__ ((packed));
422 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
423 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
425 struct ceph_mds_request_head {
426 __le64 oldest_client_tid;
427 __le32 mdsmap_epoch; /* on client */
428 __le32 flags; /* CEPH_MDS_FLAG_* */
429 __u8 num_retry, num_fwd; /* count retry, fwd attempts */
430 __le16 num_releases; /* # include cap/lease release records */
431 __le32 op; /* mds op code */
432 __le32 caller_uid, caller_gid;
433 __le64 ino; /* use this ino for openc, mkdir, mknod,
434 etc. (if replaying) */
435 union ceph_mds_request_args args;
436 } __attribute__ ((packed));
438 /* cap/lease release record */
439 struct ceph_mds_request_release {
440 __le64 ino, cap_id; /* ino and unique cap id */
441 __le32 caps, wanted; /* new issued, wanted */
442 __le32 seq, issue_seq, mseq;
443 __le32 dname_seq; /* if releasing a dentry lease, a */
444 __le32 dname_len; /* string follows. */
445 } __attribute__ ((packed));
448 struct ceph_mds_reply_head {
452 __u8 safe; /* true if committed to disk */
453 __u8 is_dentry, is_target; /* true if dentry, target inode records
454 are included with reply */
455 } __attribute__ ((packed));
457 /* one for each node split */
458 struct ceph_frag_tree_split {
459 __le32 frag; /* this frag splits... */
460 __le32 by; /* ...by this many bits */
461 } __attribute__ ((packed));
463 struct ceph_frag_tree_head {
464 __le32 nsplits; /* num ceph_frag_tree_split records */
465 struct ceph_frag_tree_split splits[];
466 } __attribute__ ((packed));
468 /* capability issue, for bundling with mds reply */
469 struct ceph_mds_reply_cap {
470 __le32 caps, wanted; /* caps issued, wanted */
473 __le64 realm; /* snap realm */
474 __u8 flags; /* CEPH_CAP_FLAG_* */
475 } __attribute__ ((packed));
477 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */
478 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */
480 /* inode record, for bundling with mds reply */
481 struct ceph_mds_reply_inode {
485 __le64 version; /* inode version */
486 __le64 xattr_version; /* version for xattr blob */
487 struct ceph_mds_reply_cap cap; /* caps issued for this inode */
488 struct ceph_file_layout_legacy layout;
489 struct ceph_timespec ctime, mtime, atime;
490 __le32 time_warp_seq;
491 __le64 size, max_size, truncate_size;
493 __le32 mode, uid, gid;
495 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */
496 struct ceph_timespec rctime;
497 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */
498 } __attribute__ ((packed));
499 /* followed by frag array, symlink string, dir layout, xattr blob */
501 /* reply_lease follows dname, and reply_inode */
502 struct ceph_mds_reply_lease {
503 __le16 mask; /* lease type(s) */
504 __le32 duration_ms; /* lease duration */
506 } __attribute__ ((packed));
508 struct ceph_mds_reply_dirfrag {
509 __le32 frag; /* fragment */
510 __le32 auth; /* auth mds, if this is a delegation point */
511 __le32 ndist; /* number of mds' this is replicated on */
513 } __attribute__ ((packed));
515 #define CEPH_LOCK_FCNTL 1
516 #define CEPH_LOCK_FLOCK 2
517 #define CEPH_LOCK_FCNTL_INTR 3
518 #define CEPH_LOCK_FLOCK_INTR 4
521 #define CEPH_LOCK_SHARED 1
522 #define CEPH_LOCK_EXCL 2
523 #define CEPH_LOCK_UNLOCK 4
525 struct ceph_filelock {
526 __le64 start;/* file offset to start lock at */
527 __le64 length; /* num bytes to lock; 0 for all following start */
528 __le64 client; /* which client holds the lock */
529 __le64 owner; /* owner the lock */
530 __le64 pid; /* process id holding the lock on the client */
531 __u8 type; /* shared lock, exclusive lock, or unlock */
532 } __attribute__ ((packed));
535 /* file access modes */
536 #define CEPH_FILE_MODE_PIN 0
537 #define CEPH_FILE_MODE_RD 1
538 #define CEPH_FILE_MODE_WR 2
539 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
540 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */
541 #define CEPH_FILE_MODE_BITS 4
543 int ceph_flags_to_mode(int flags);
545 #define CEPH_INLINE_NONE ((__u64)-1)
547 /* capability bits */
548 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
550 /* generic cap bits */
551 #define CEPH_CAP_GSHARED 1 /* client can reads */
552 #define CEPH_CAP_GEXCL 2 /* client can read and update */
553 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
554 #define CEPH_CAP_GRD 8 /* (file) client can read */
555 #define CEPH_CAP_GWR 16 /* (file) client can write */
556 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
557 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
558 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
560 #define CEPH_CAP_SIMPLE_BITS 2
561 #define CEPH_CAP_FILE_BITS 8
564 #define CEPH_CAP_SAUTH 2
565 #define CEPH_CAP_SLINK 4
566 #define CEPH_CAP_SXATTR 6
567 #define CEPH_CAP_SFILE 8
568 #define CEPH_CAP_SFLOCK 20
570 #define CEPH_CAP_BITS 22
572 /* composed values */
573 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
574 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
575 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
576 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
577 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
578 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
579 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
580 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
581 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
582 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
583 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
584 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
585 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
586 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
587 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
588 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK)
589 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK)
592 /* cap masks (for getattr) */
593 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
594 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
595 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
596 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
597 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
598 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
599 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
600 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
601 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
602 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
603 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
604 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
605 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
606 CEPH_CAP_AUTH_SHARED | \
607 CEPH_CAP_LINK_SHARED | \
608 CEPH_CAP_FILE_SHARED | \
609 CEPH_CAP_XATTR_SHARED)
610 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \
613 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
614 CEPH_CAP_LINK_SHARED | \
615 CEPH_CAP_XATTR_SHARED | \
616 CEPH_CAP_FILE_SHARED)
617 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
620 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
621 CEPH_CAP_LINK_EXCL | \
622 CEPH_CAP_XATTR_EXCL | \
624 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \
625 CEPH_CAP_FILE_SHARED)
626 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
628 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
629 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
630 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
633 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
636 int ceph_caps_for_mode(int mode);
639 CEPH_CAP_OP_GRANT, /* mds->client grant */
640 CEPH_CAP_OP_REVOKE, /* mds->client revoke */
641 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */
642 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */
643 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */
644 CEPH_CAP_OP_UPDATE, /* client->mds update */
645 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */
646 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */
647 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */
648 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */
649 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */
650 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */
651 CEPH_CAP_OP_RENEW, /* client->mds renewal request */
654 extern const char *ceph_cap_op_name(int op);
657 * caps message, used for capability callbacks, acks, requests, etc.
659 struct ceph_mds_caps {
660 __le32 op; /* CEPH_CAP_OP_* */
663 __le32 seq, issue_seq;
664 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */
667 __le32 snap_trace_len;
670 __le32 uid, gid, mode;
677 __le64 xattr_version;
680 __le64 size, max_size, truncate_size;
682 struct ceph_timespec mtime, atime, ctime;
683 struct ceph_file_layout_legacy layout;
684 __le32 time_warp_seq;
685 } __attribute__ ((packed));
687 struct ceph_mds_cap_peer {
693 } __attribute__ ((packed));
695 /* cap release msg head */
696 struct ceph_mds_cap_release {
697 __le32 num; /* number of cap_items that follow */
698 } __attribute__ ((packed));
700 struct ceph_mds_cap_item {
703 __le32 migrate_seq, seq;
704 } __attribute__ ((packed));
706 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
707 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
708 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
709 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
711 extern const char *ceph_lease_op_name(int o);
713 /* lease msg header */
714 struct ceph_mds_lease {
715 __u8 action; /* CEPH_MDS_LEASE_* */
716 __le16 mask; /* which lease */
718 __le64 first, last; /* snap range */
720 __le32 duration_ms; /* duration of renewal */
721 } __attribute__ ((packed));
722 /* followed by a __le32+string for dname */
724 /* client reconnect */
725 struct ceph_mds_cap_reconnect {
730 __le64 pathbase; /* base ino for our path to this ino */
731 __le32 flock_len; /* size of flock state blob, if any */
732 } __attribute__ ((packed));
733 /* followed by flock blob */
735 struct ceph_mds_cap_reconnect_v1 {
740 struct ceph_timespec mtime, atime;
742 __le64 pathbase; /* base ino for our path to this ino */
743 } __attribute__ ((packed));
745 struct ceph_mds_snaprealm_reconnect {
746 __le64 ino; /* snap realm base */
747 __le64 seq; /* snap seq for this snap realm */
748 __le64 parent; /* parent realm */
749 } __attribute__ ((packed));
755 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */
757 CEPH_SNAP_OP_DESTROY,
761 extern const char *ceph_snap_op_name(int o);
763 /* snap msg header */
764 struct ceph_mds_snap_head {
765 __le32 op; /* CEPH_SNAP_OP_* */
766 __le64 split; /* ino to split off, if any */
767 __le32 num_split_inos; /* # inos belonging to new child realm */
768 __le32 num_split_realms; /* # child realms udner new child realm */
769 __le32 trace_len; /* size of snap trace blob */
770 } __attribute__ ((packed));
771 /* followed by split ino list, then split realms, then the trace blob */
774 * encode info about a snaprealm, as viewed by a client
776 struct ceph_mds_snap_realm {
777 __le64 ino; /* ino */
778 __le64 created; /* snap: when created */
779 __le64 parent; /* ino: parent realm */
780 __le64 parent_since; /* snap: same parent since */
781 __le64 seq; /* snap: version */
783 __le32 num_prior_parent_snaps;
784 } __attribute__ ((packed));
785 /* followed by my snap list, then prior parent snap list */