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 * ceph_file_layout - describe data layout for a file/inode
39 struct ceph_file_layout
{
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
));
56 #define CEPH_MIN_STRIPE_UNIT 65536
58 int ceph_file_layout_is_valid(const struct ceph_file_layout
*layout
);
60 struct ceph_dir_layout
{
61 __u8 dl_dir_hash
; /* see ceph_hash.h for ids */
65 } __attribute__ ((packed
));
67 /* crypto algorithms */
68 #define CEPH_CRYPTO_NONE 0x0
69 #define CEPH_CRYPTO_AES 0x1
71 #define CEPH_AES_IV "cephsageyudagreg"
73 /* security/authentication protocols */
74 #define CEPH_AUTH_UNKNOWN 0x0
75 #define CEPH_AUTH_NONE 0x1
76 #define CEPH_AUTH_CEPHX 0x2
78 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1)
81 /*********************************************
90 #define CEPH_MSG_SHUTDOWN 1
91 #define CEPH_MSG_PING 2
93 /* client <-> monitor */
94 #define CEPH_MSG_MON_MAP 4
95 #define CEPH_MSG_MON_GET_MAP 5
96 #define CEPH_MSG_STATFS 13
97 #define CEPH_MSG_STATFS_REPLY 14
98 #define CEPH_MSG_MON_SUBSCRIBE 15
99 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16
100 #define CEPH_MSG_AUTH 17
101 #define CEPH_MSG_AUTH_REPLY 18
102 #define CEPH_MSG_MON_GET_VERSION 19
103 #define CEPH_MSG_MON_GET_VERSION_REPLY 20
106 #define CEPH_MSG_MDS_MAP 21
108 #define CEPH_MSG_CLIENT_SESSION 22
109 #define CEPH_MSG_CLIENT_RECONNECT 23
111 #define CEPH_MSG_CLIENT_REQUEST 24
112 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
113 #define CEPH_MSG_CLIENT_REPLY 26
114 #define CEPH_MSG_CLIENT_CAPS 0x310
115 #define CEPH_MSG_CLIENT_LEASE 0x311
116 #define CEPH_MSG_CLIENT_SNAP 0x312
117 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313
120 #define CEPH_MSG_POOLOP_REPLY 48
121 #define CEPH_MSG_POOLOP 49
125 #define CEPH_MSG_OSD_MAP 41
126 #define CEPH_MSG_OSD_OP 42
127 #define CEPH_MSG_OSD_OPREPLY 43
128 #define CEPH_MSG_WATCH_NOTIFY 44
131 /* watch-notify operations */
133 WATCH_NOTIFY
= 1, /* notifying watcher */
134 WATCH_NOTIFY_COMPLETE
= 2, /* notifier notified when done */
138 /* pool operations */
140 POOL_OP_CREATE
= 0x01,
141 POOL_OP_DELETE
= 0x02,
142 POOL_OP_AUID_CHANGE
= 0x03,
143 POOL_OP_CREATE_SNAP
= 0x11,
144 POOL_OP_DELETE_SNAP
= 0x12,
145 POOL_OP_CREATE_UNMANAGED_SNAP
= 0x21,
146 POOL_OP_DELETE_UNMANAGED_SNAP
= 0x22,
149 struct ceph_mon_request_header
{
152 __le64 session_mon_tid
;
153 } __attribute__ ((packed
));
155 struct ceph_mon_statfs
{
156 struct ceph_mon_request_header monhdr
;
157 struct ceph_fsid fsid
;
158 } __attribute__ ((packed
));
161 __le64 kb
, kb_used
, kb_avail
;
163 } __attribute__ ((packed
));
165 struct ceph_mon_statfs_reply
{
166 struct ceph_fsid fsid
;
168 struct ceph_statfs st
;
169 } __attribute__ ((packed
));
171 const char *ceph_pool_op_name(int op
);
173 struct ceph_mon_poolop
{
174 struct ceph_mon_request_header monhdr
;
175 struct ceph_fsid fsid
;
181 } __attribute__ ((packed
));
183 struct ceph_mon_poolop_reply
{
184 struct ceph_mon_request_header monhdr
;
185 struct ceph_fsid fsid
;
190 } __attribute__ ((packed
));
192 struct ceph_mon_unmanaged_snap
{
194 } __attribute__ ((packed
));
196 struct ceph_osd_getmap
{
197 struct ceph_mon_request_header monhdr
;
198 struct ceph_fsid fsid
;
200 } __attribute__ ((packed
));
202 struct ceph_mds_getmap
{
203 struct ceph_mon_request_header monhdr
;
204 struct ceph_fsid fsid
;
205 } __attribute__ ((packed
));
207 struct ceph_client_mount
{
208 struct ceph_mon_request_header monhdr
;
209 } __attribute__ ((packed
));
211 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
213 struct ceph_mon_subscribe_item
{
214 __le64 have_version
; __le64 have
;
216 } __attribute__ ((packed
));
218 struct ceph_mon_subscribe_ack
{
219 __le32 duration
; /* seconds */
220 struct ceph_fsid fsid
;
221 } __attribute__ ((packed
));
226 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */
233 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
234 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
236 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
237 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
238 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
239 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
240 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
241 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */
243 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
244 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
245 operations (import, rename, etc.) */
246 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
247 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
248 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
249 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
250 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
252 extern const char *ceph_mds_state_name(int s
);
256 * metadata lock types.
257 * - these are bitmasks.. we can compose them
258 * - they also define the lock ordering by the MDS
259 * - a few of these are internal to the mds
261 #define CEPH_LOCK_DVERSION 1
262 #define CEPH_LOCK_DN 2
263 #define CEPH_LOCK_ISNAP 16
264 #define CEPH_LOCK_IVERSION 32 /* mds internal */
265 #define CEPH_LOCK_IFILE 64
266 #define CEPH_LOCK_IAUTH 128
267 #define CEPH_LOCK_ILINK 256
268 #define CEPH_LOCK_IDFT 512 /* dir frag tree */
269 #define CEPH_LOCK_INEST 1024 /* mds internal */
270 #define CEPH_LOCK_IXATTR 2048
271 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
272 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
273 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */
275 /* client_session ops */
277 CEPH_SESSION_REQUEST_OPEN
,
279 CEPH_SESSION_REQUEST_CLOSE
,
281 CEPH_SESSION_REQUEST_RENEWCAPS
,
282 CEPH_SESSION_RENEWCAPS
,
284 CEPH_SESSION_RECALL_STATE
,
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,
311 CEPH_MDS_OP_SETXATTR
= 0x01105,
312 CEPH_MDS_OP_RMXATTR
= 0x01106,
313 CEPH_MDS_OP_SETLAYOUT
= 0x01107,
314 CEPH_MDS_OP_SETATTR
= 0x01108,
315 CEPH_MDS_OP_SETFILELOCK
= 0x01109,
316 CEPH_MDS_OP_GETFILELOCK
= 0x00110,
317 CEPH_MDS_OP_SETDIRLAYOUT
=0x0110a,
319 CEPH_MDS_OP_MKNOD
= 0x01201,
320 CEPH_MDS_OP_LINK
= 0x01202,
321 CEPH_MDS_OP_UNLINK
= 0x01203,
322 CEPH_MDS_OP_RENAME
= 0x01204,
323 CEPH_MDS_OP_MKDIR
= 0x01220,
324 CEPH_MDS_OP_RMDIR
= 0x01221,
325 CEPH_MDS_OP_SYMLINK
= 0x01222,
327 CEPH_MDS_OP_CREATE
= 0x01301,
328 CEPH_MDS_OP_OPEN
= 0x00302,
329 CEPH_MDS_OP_READDIR
= 0x00305,
331 CEPH_MDS_OP_LOOKUPSNAP
= 0x00400,
332 CEPH_MDS_OP_MKSNAP
= 0x01400,
333 CEPH_MDS_OP_RMSNAP
= 0x01401,
334 CEPH_MDS_OP_LSSNAP
= 0x00402,
337 extern const char *ceph_mds_op_name(int op
);
340 #define CEPH_SETATTR_MODE 1
341 #define CEPH_SETATTR_UID 2
342 #define CEPH_SETATTR_GID 4
343 #define CEPH_SETATTR_MTIME 8
344 #define CEPH_SETATTR_ATIME 16
345 #define CEPH_SETATTR_SIZE 32
346 #define CEPH_SETATTR_CTIME 64
349 * Ceph setxattr request flags.
351 #define CEPH_XATTR_CREATE 1
352 #define CEPH_XATTR_REPLACE 2
354 union ceph_mds_request_args
{
356 __le32 mask
; /* CEPH_CAP_* */
357 } __attribute__ ((packed
)) getattr
;
362 struct ceph_timespec mtime
;
363 struct ceph_timespec atime
;
364 __le64 size
, old_size
; /* old_size needed by truncate */
365 __le32 mask
; /* CEPH_SETATTR_* */
366 } __attribute__ ((packed
)) setattr
;
368 __le32 frag
; /* which dir fragment */
369 __le32 max_entries
; /* how many dentries to grab */
371 } __attribute__ ((packed
)) readdir
;
375 } __attribute__ ((packed
)) mknod
;
378 } __attribute__ ((packed
)) mkdir
;
382 __le32 stripe_unit
; /* layout for newly created file */
383 __le32 stripe_count
; /* ... */
385 __le32 file_replication
;
386 __le32 unused
; /* used to be preferred osd */
387 } __attribute__ ((packed
)) open
;
390 } __attribute__ ((packed
)) setxattr
;
392 struct ceph_file_layout layout
;
393 } __attribute__ ((packed
)) setlayout
;
395 __u8 rule
; /* currently fcntl or flock */
396 __u8 type
; /* shared, exclusive, remove*/
397 __le64 pid
; /* process id requesting the lock */
398 __le64 pid_namespace
;
399 __le64 start
; /* initial location to lock */
400 __le64 length
; /* num bytes to lock from start */
401 __u8 wait
; /* will caller wait for lock to become available? */
402 } __attribute__ ((packed
)) filelock_change
;
403 } __attribute__ ((packed
));
405 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
406 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
408 struct ceph_mds_request_head
{
409 __le64 oldest_client_tid
;
410 __le32 mdsmap_epoch
; /* on client */
411 __le32 flags
; /* CEPH_MDS_FLAG_* */
412 __u8 num_retry
, num_fwd
; /* count retry, fwd attempts */
413 __le16 num_releases
; /* # include cap/lease release records */
414 __le32 op
; /* mds op code */
415 __le32 caller_uid
, caller_gid
;
416 __le64 ino
; /* use this ino for openc, mkdir, mknod,
417 etc. (if replaying) */
418 union ceph_mds_request_args args
;
419 } __attribute__ ((packed
));
421 /* cap/lease release record */
422 struct ceph_mds_request_release
{
423 __le64 ino
, cap_id
; /* ino and unique cap id */
424 __le32 caps
, wanted
; /* new issued, wanted */
425 __le32 seq
, issue_seq
, mseq
;
426 __le32 dname_seq
; /* if releasing a dentry lease, a */
427 __le32 dname_len
; /* string follows. */
428 } __attribute__ ((packed
));
431 struct ceph_mds_reply_head
{
435 __u8 safe
; /* true if committed to disk */
436 __u8 is_dentry
, is_target
; /* true if dentry, target inode records
437 are included with reply */
438 } __attribute__ ((packed
));
440 /* one for each node split */
441 struct ceph_frag_tree_split
{
442 __le32 frag
; /* this frag splits... */
443 __le32 by
; /* ...by this many bits */
444 } __attribute__ ((packed
));
446 struct ceph_frag_tree_head
{
447 __le32 nsplits
; /* num ceph_frag_tree_split records */
448 struct ceph_frag_tree_split splits
[];
449 } __attribute__ ((packed
));
451 /* capability issue, for bundling with mds reply */
452 struct ceph_mds_reply_cap
{
453 __le32 caps
, wanted
; /* caps issued, wanted */
456 __le64 realm
; /* snap realm */
457 __u8 flags
; /* CEPH_CAP_FLAG_* */
458 } __attribute__ ((packed
));
460 #define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */
462 /* inode record, for bundling with mds reply */
463 struct ceph_mds_reply_inode
{
467 __le64 version
; /* inode version */
468 __le64 xattr_version
; /* version for xattr blob */
469 struct ceph_mds_reply_cap cap
; /* caps issued for this inode */
470 struct ceph_file_layout layout
;
471 struct ceph_timespec ctime
, mtime
, atime
;
472 __le32 time_warp_seq
;
473 __le64 size
, max_size
, truncate_size
;
475 __le32 mode
, uid
, gid
;
477 __le64 files
, subdirs
, rbytes
, rfiles
, rsubdirs
; /* dir stats */
478 struct ceph_timespec rctime
;
479 struct ceph_frag_tree_head fragtree
; /* (must be at end of struct) */
480 } __attribute__ ((packed
));
481 /* followed by frag array, symlink string, dir layout, xattr blob */
483 /* reply_lease follows dname, and reply_inode */
484 struct ceph_mds_reply_lease
{
485 __le16 mask
; /* lease type(s) */
486 __le32 duration_ms
; /* lease duration */
488 } __attribute__ ((packed
));
490 struct ceph_mds_reply_dirfrag
{
491 __le32 frag
; /* fragment */
492 __le32 auth
; /* auth mds, if this is a delegation point */
493 __le32 ndist
; /* number of mds' this is replicated on */
495 } __attribute__ ((packed
));
497 #define CEPH_LOCK_FCNTL 1
498 #define CEPH_LOCK_FLOCK 2
500 #define CEPH_LOCK_SHARED 1
501 #define CEPH_LOCK_EXCL 2
502 #define CEPH_LOCK_UNLOCK 4
504 struct ceph_filelock
{
505 __le64 start
;/* file offset to start lock at */
506 __le64 length
; /* num bytes to lock; 0 for all following start */
507 __le64 client
; /* which client holds the lock */
508 __le64 pid
; /* process id holding the lock on the client */
509 __le64 pid_namespace
;
510 __u8 type
; /* shared lock, exclusive lock, or unlock */
511 } __attribute__ ((packed
));
514 /* file access modes */
515 #define CEPH_FILE_MODE_PIN 0
516 #define CEPH_FILE_MODE_RD 1
517 #define CEPH_FILE_MODE_WR 2
518 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
519 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */
520 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */
522 int ceph_flags_to_mode(int flags
);
525 /* capability bits */
526 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
528 /* generic cap bits */
529 #define CEPH_CAP_GSHARED 1 /* client can reads */
530 #define CEPH_CAP_GEXCL 2 /* client can read and update */
531 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
532 #define CEPH_CAP_GRD 8 /* (file) client can read */
533 #define CEPH_CAP_GWR 16 /* (file) client can write */
534 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
535 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
536 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
538 #define CEPH_CAP_SIMPLE_BITS 2
539 #define CEPH_CAP_FILE_BITS 8
542 #define CEPH_CAP_SAUTH 2
543 #define CEPH_CAP_SLINK 4
544 #define CEPH_CAP_SXATTR 6
545 #define CEPH_CAP_SFILE 8
546 #define CEPH_CAP_SFLOCK 20
548 #define CEPH_CAP_BITS 22
550 /* composed values */
551 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
552 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
553 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
554 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
555 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
556 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
557 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
558 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
559 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
560 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
561 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
562 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
563 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
564 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
565 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
566 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK)
567 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK)
570 /* cap masks (for getattr) */
571 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
572 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
573 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
574 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
575 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
576 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
577 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
578 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
579 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
580 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
581 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
582 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
583 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
584 CEPH_CAP_AUTH_SHARED | \
585 CEPH_CAP_LINK_SHARED | \
586 CEPH_CAP_FILE_SHARED | \
587 CEPH_CAP_XATTR_SHARED)
589 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
590 CEPH_CAP_LINK_SHARED | \
591 CEPH_CAP_XATTR_SHARED | \
592 CEPH_CAP_FILE_SHARED)
593 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
596 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
597 CEPH_CAP_LINK_EXCL | \
598 CEPH_CAP_XATTR_EXCL | \
600 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
602 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
603 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
604 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
607 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
610 int ceph_caps_for_mode(int mode
);
613 CEPH_CAP_OP_GRANT
, /* mds->client grant */
614 CEPH_CAP_OP_REVOKE
, /* mds->client revoke */
615 CEPH_CAP_OP_TRUNC
, /* mds->client trunc notify */
616 CEPH_CAP_OP_EXPORT
, /* mds has exported the cap */
617 CEPH_CAP_OP_IMPORT
, /* mds has imported the cap */
618 CEPH_CAP_OP_UPDATE
, /* client->mds update */
619 CEPH_CAP_OP_DROP
, /* client->mds drop cap bits */
620 CEPH_CAP_OP_FLUSH
, /* client->mds cap writeback */
621 CEPH_CAP_OP_FLUSH_ACK
, /* mds->client flushed */
622 CEPH_CAP_OP_FLUSHSNAP
, /* client->mds flush snapped metadata */
623 CEPH_CAP_OP_FLUSHSNAP_ACK
, /* mds->client flushed snapped metadata */
624 CEPH_CAP_OP_RELEASE
, /* client->mds release (clean) cap */
625 CEPH_CAP_OP_RENEW
, /* client->mds renewal request */
628 extern const char *ceph_cap_op_name(int op
);
631 * caps message, used for capability callbacks, acks, requests, etc.
633 struct ceph_mds_caps
{
634 __le32 op
; /* CEPH_CAP_OP_* */
637 __le32 seq
, issue_seq
;
638 __le32 caps
, wanted
, dirty
; /* latest issued/wanted/dirty */
641 __le32 snap_trace_len
;
644 __le32 uid
, gid
, mode
;
651 __le64 xattr_version
;
654 __le64 size
, max_size
, truncate_size
;
656 struct ceph_timespec mtime
, atime
, ctime
;
657 struct ceph_file_layout layout
;
658 __le32 time_warp_seq
;
659 } __attribute__ ((packed
));
661 /* cap release msg head */
662 struct ceph_mds_cap_release
{
663 __le32 num
; /* number of cap_items that follow */
664 } __attribute__ ((packed
));
666 struct ceph_mds_cap_item
{
669 __le32 migrate_seq
, seq
;
670 } __attribute__ ((packed
));
672 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
673 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
674 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
675 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
677 extern const char *ceph_lease_op_name(int o
);
679 /* lease msg header */
680 struct ceph_mds_lease
{
681 __u8 action
; /* CEPH_MDS_LEASE_* */
682 __le16 mask
; /* which lease */
684 __le64 first
, last
; /* snap range */
686 __le32 duration_ms
; /* duration of renewal */
687 } __attribute__ ((packed
));
688 /* followed by a __le32+string for dname */
690 /* client reconnect */
691 struct ceph_mds_cap_reconnect
{
696 __le64 pathbase
; /* base ino for our path to this ino */
697 __le32 flock_len
; /* size of flock state blob, if any */
698 } __attribute__ ((packed
));
699 /* followed by flock blob */
701 struct ceph_mds_cap_reconnect_v1
{
706 struct ceph_timespec mtime
, atime
;
708 __le64 pathbase
; /* base ino for our path to this ino */
709 } __attribute__ ((packed
));
711 struct ceph_mds_snaprealm_reconnect
{
712 __le64 ino
; /* snap realm base */
713 __le64 seq
; /* snap seq for this snap realm */
714 __le64 parent
; /* parent realm */
715 } __attribute__ ((packed
));
721 CEPH_SNAP_OP_UPDATE
, /* CREATE or DESTROY */
723 CEPH_SNAP_OP_DESTROY
,
727 extern const char *ceph_snap_op_name(int o
);
729 /* snap msg header */
730 struct ceph_mds_snap_head
{
731 __le32 op
; /* CEPH_SNAP_OP_* */
732 __le64 split
; /* ino to split off, if any */
733 __le32 num_split_inos
; /* # inos belonging to new child realm */
734 __le32 num_split_realms
; /* # child realms udner new child realm */
735 __le32 trace_len
; /* size of snap trace blob */
736 } __attribute__ ((packed
));
737 /* followed by split ino list, then split realms, then the trace blob */
740 * encode info about a snaprealm, as viewed by a client
742 struct ceph_mds_snap_realm
{
743 __le64 ino
; /* ino */
744 __le64 created
; /* snap: when created */
745 __le64 parent
; /* ino: parent realm */
746 __le64 parent_since
; /* snap: same parent since */
747 __le64 seq
; /* snap: version */
749 __le32 num_prior_parent_snaps
;
750 } __attribute__ ((packed
));
751 /* followed by my snap list, then prior parent snap list */