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.
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_OSD_PROTOCOL 8 /* cluster internal */
25 #define CEPH_MDS_PROTOCOL 12 /* cluster internal */
26 #define CEPH_MON_PROTOCOL 5 /* cluster internal */
27 #define CEPH_OSDC_PROTOCOL 24 /* server/client */
28 #define CEPH_MDSC_PROTOCOL 32 /* server/client */
29 #define CEPH_MONC_PROTOCOL 15 /* server/client */
32 #define CEPH_INO_ROOT 1
33 #define CEPH_INO_CEPH 2 /* hidden .ceph dir */
35 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */
36 #define CEPH_MAX_MON 31
42 #define CEPH_FEATURE_UID (1<<0)
43 #define CEPH_FEATURE_NOSRCADDR (1<<1)
44 #define CEPH_FEATURE_MONCLOCKCHECK (1<<2)
45 #define CEPH_FEATURE_FLOCK (1<<3)
46 #define CEPH_FEATURE_SUBSCRIBE2 (1<<4)
47 #define CEPH_FEATURE_MONNAMES (1<<5)
48 #define CEPH_FEATURE_RECONNECT_SEQ (1<<6)
49 #define CEPH_FEATURE_DIRLAYOUTHASH (1<<7)
53 * ceph_file_layout - describe data layout for a file/inode
55 struct ceph_file_layout
{
56 /* file -> object mapping */
57 __le32 fl_stripe_unit
; /* stripe unit, in bytes. must be multiple
59 __le32 fl_stripe_count
; /* over this many objects */
60 __le32 fl_object_size
; /* until objects are this big, then move to
62 __le32 fl_cas_hash
; /* UNUSED. 0 = none; 1 = sha256 */
64 /* pg -> disk layout */
65 __le32 fl_object_stripe_unit
; /* UNUSED. for per-object parity, if any */
67 /* object -> pg layout */
68 __le32 fl_unused
; /* unused; used to be preferred primary (-1) */
69 __le32 fl_pg_pool
; /* namespace, crush ruleset, rep level */
70 } __attribute__ ((packed
));
72 #define CEPH_MIN_STRIPE_UNIT 65536
74 int ceph_file_layout_is_valid(const struct ceph_file_layout
*layout
);
76 struct ceph_dir_layout
{
77 __u8 dl_dir_hash
; /* see ceph_hash.h for ids */
81 } __attribute__ ((packed
));
83 /* crypto algorithms */
84 #define CEPH_CRYPTO_NONE 0x0
85 #define CEPH_CRYPTO_AES 0x1
87 #define CEPH_AES_IV "cephsageyudagreg"
89 /* security/authentication protocols */
90 #define CEPH_AUTH_UNKNOWN 0x0
91 #define CEPH_AUTH_NONE 0x1
92 #define CEPH_AUTH_CEPHX 0x2
94 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1)
97 /*********************************************
106 #define CEPH_MSG_SHUTDOWN 1
107 #define CEPH_MSG_PING 2
109 /* client <-> monitor */
110 #define CEPH_MSG_MON_MAP 4
111 #define CEPH_MSG_MON_GET_MAP 5
112 #define CEPH_MSG_STATFS 13
113 #define CEPH_MSG_STATFS_REPLY 14
114 #define CEPH_MSG_MON_SUBSCRIBE 15
115 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16
116 #define CEPH_MSG_AUTH 17
117 #define CEPH_MSG_AUTH_REPLY 18
120 #define CEPH_MSG_MDS_MAP 21
122 #define CEPH_MSG_CLIENT_SESSION 22
123 #define CEPH_MSG_CLIENT_RECONNECT 23
125 #define CEPH_MSG_CLIENT_REQUEST 24
126 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
127 #define CEPH_MSG_CLIENT_REPLY 26
128 #define CEPH_MSG_CLIENT_CAPS 0x310
129 #define CEPH_MSG_CLIENT_LEASE 0x311
130 #define CEPH_MSG_CLIENT_SNAP 0x312
131 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313
134 #define CEPH_MSG_POOLOP_REPLY 48
135 #define CEPH_MSG_POOLOP 49
139 #define CEPH_MSG_OSD_MAP 41
140 #define CEPH_MSG_OSD_OP 42
141 #define CEPH_MSG_OSD_OPREPLY 43
142 #define CEPH_MSG_WATCH_NOTIFY 44
145 /* watch-notify operations */
147 WATCH_NOTIFY
= 1, /* notifying watcher */
148 WATCH_NOTIFY_COMPLETE
= 2, /* notifier notified when done */
152 /* pool operations */
154 POOL_OP_CREATE
= 0x01,
155 POOL_OP_DELETE
= 0x02,
156 POOL_OP_AUID_CHANGE
= 0x03,
157 POOL_OP_CREATE_SNAP
= 0x11,
158 POOL_OP_DELETE_SNAP
= 0x12,
159 POOL_OP_CREATE_UNMANAGED_SNAP
= 0x21,
160 POOL_OP_DELETE_UNMANAGED_SNAP
= 0x22,
163 struct ceph_mon_request_header
{
166 __le64 session_mon_tid
;
167 } __attribute__ ((packed
));
169 struct ceph_mon_statfs
{
170 struct ceph_mon_request_header monhdr
;
171 struct ceph_fsid fsid
;
172 } __attribute__ ((packed
));
175 __le64 kb
, kb_used
, kb_avail
;
177 } __attribute__ ((packed
));
179 struct ceph_mon_statfs_reply
{
180 struct ceph_fsid fsid
;
182 struct ceph_statfs st
;
183 } __attribute__ ((packed
));
185 const char *ceph_pool_op_name(int op
);
187 struct ceph_mon_poolop
{
188 struct ceph_mon_request_header monhdr
;
189 struct ceph_fsid fsid
;
195 } __attribute__ ((packed
));
197 struct ceph_mon_poolop_reply
{
198 struct ceph_mon_request_header monhdr
;
199 struct ceph_fsid fsid
;
204 } __attribute__ ((packed
));
206 struct ceph_mon_unmanaged_snap
{
208 } __attribute__ ((packed
));
210 struct ceph_osd_getmap
{
211 struct ceph_mon_request_header monhdr
;
212 struct ceph_fsid fsid
;
214 } __attribute__ ((packed
));
216 struct ceph_mds_getmap
{
217 struct ceph_mon_request_header monhdr
;
218 struct ceph_fsid fsid
;
219 } __attribute__ ((packed
));
221 struct ceph_client_mount
{
222 struct ceph_mon_request_header monhdr
;
223 } __attribute__ ((packed
));
225 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
227 struct ceph_mon_subscribe_item
{
228 __le64 have_version
; __le64 have
;
230 } __attribute__ ((packed
));
232 struct ceph_mon_subscribe_ack
{
233 __le32 duration
; /* seconds */
234 struct ceph_fsid fsid
;
235 } __attribute__ ((packed
));
242 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
243 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
245 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
246 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
247 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
248 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
249 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
251 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
252 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
253 operations (import, rename, etc.) */
254 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
255 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
256 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
257 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
258 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
260 extern const char *ceph_mds_state_name(int s
);
264 * metadata lock types.
265 * - these are bitmasks.. we can compose them
266 * - they also define the lock ordering by the MDS
267 * - a few of these are internal to the mds
269 #define CEPH_LOCK_DVERSION 1
270 #define CEPH_LOCK_DN 2
271 #define CEPH_LOCK_ISNAP 16
272 #define CEPH_LOCK_IVERSION 32 /* mds internal */
273 #define CEPH_LOCK_IFILE 64
274 #define CEPH_LOCK_IAUTH 128
275 #define CEPH_LOCK_ILINK 256
276 #define CEPH_LOCK_IDFT 512 /* dir frag tree */
277 #define CEPH_LOCK_INEST 1024 /* mds internal */
278 #define CEPH_LOCK_IXATTR 2048
279 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
280 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
282 /* client_session ops */
284 CEPH_SESSION_REQUEST_OPEN
,
286 CEPH_SESSION_REQUEST_CLOSE
,
288 CEPH_SESSION_REQUEST_RENEWCAPS
,
289 CEPH_SESSION_RENEWCAPS
,
291 CEPH_SESSION_RECALL_STATE
,
294 extern const char *ceph_session_op_name(int op
);
296 struct ceph_mds_session_head
{
299 struct ceph_timespec stamp
;
300 __le32 max_caps
, max_leases
;
301 } __attribute__ ((packed
));
306 * & 0x001000 -> write op
307 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
308 & & 0x100000 -> use weird ino/path trace
310 #define CEPH_MDS_OP_WRITE 0x001000
312 CEPH_MDS_OP_LOOKUP
= 0x00100,
313 CEPH_MDS_OP_GETATTR
= 0x00101,
314 CEPH_MDS_OP_LOOKUPHASH
= 0x00102,
315 CEPH_MDS_OP_LOOKUPPARENT
= 0x00103,
316 CEPH_MDS_OP_LOOKUPINO
= 0x00104,
318 CEPH_MDS_OP_SETXATTR
= 0x01105,
319 CEPH_MDS_OP_RMXATTR
= 0x01106,
320 CEPH_MDS_OP_SETLAYOUT
= 0x01107,
321 CEPH_MDS_OP_SETATTR
= 0x01108,
322 CEPH_MDS_OP_SETFILELOCK
= 0x01109,
323 CEPH_MDS_OP_GETFILELOCK
= 0x00110,
324 CEPH_MDS_OP_SETDIRLAYOUT
=0x0110a,
326 CEPH_MDS_OP_MKNOD
= 0x01201,
327 CEPH_MDS_OP_LINK
= 0x01202,
328 CEPH_MDS_OP_UNLINK
= 0x01203,
329 CEPH_MDS_OP_RENAME
= 0x01204,
330 CEPH_MDS_OP_MKDIR
= 0x01220,
331 CEPH_MDS_OP_RMDIR
= 0x01221,
332 CEPH_MDS_OP_SYMLINK
= 0x01222,
334 CEPH_MDS_OP_CREATE
= 0x01301,
335 CEPH_MDS_OP_OPEN
= 0x00302,
336 CEPH_MDS_OP_READDIR
= 0x00305,
338 CEPH_MDS_OP_LOOKUPSNAP
= 0x00400,
339 CEPH_MDS_OP_MKSNAP
= 0x01400,
340 CEPH_MDS_OP_RMSNAP
= 0x01401,
341 CEPH_MDS_OP_LSSNAP
= 0x00402,
344 extern const char *ceph_mds_op_name(int op
);
347 #define CEPH_SETATTR_MODE 1
348 #define CEPH_SETATTR_UID 2
349 #define CEPH_SETATTR_GID 4
350 #define CEPH_SETATTR_MTIME 8
351 #define CEPH_SETATTR_ATIME 16
352 #define CEPH_SETATTR_SIZE 32
353 #define CEPH_SETATTR_CTIME 64
355 union ceph_mds_request_args
{
357 __le32 mask
; /* CEPH_CAP_* */
358 } __attribute__ ((packed
)) getattr
;
363 struct ceph_timespec mtime
;
364 struct ceph_timespec atime
;
365 __le64 size
, old_size
; /* old_size needed by truncate */
366 __le32 mask
; /* CEPH_SETATTR_* */
367 } __attribute__ ((packed
)) setattr
;
369 __le32 frag
; /* which dir fragment */
370 __le32 max_entries
; /* how many dentries to grab */
372 } __attribute__ ((packed
)) readdir
;
376 } __attribute__ ((packed
)) mknod
;
379 } __attribute__ ((packed
)) mkdir
;
383 __le32 stripe_unit
; /* layout for newly created file */
384 __le32 stripe_count
; /* ... */
386 __le32 file_replication
;
387 __le32 unused
; /* used to be preferred osd */
388 } __attribute__ ((packed
)) open
;
391 } __attribute__ ((packed
)) setxattr
;
393 struct ceph_file_layout layout
;
394 } __attribute__ ((packed
)) setlayout
;
396 __u8 rule
; /* currently fcntl or flock */
397 __u8 type
; /* shared, exclusive, remove*/
398 __le64 pid
; /* process id requesting the lock */
399 __le64 pid_namespace
;
400 __le64 start
; /* initial location to lock */
401 __le64 length
; /* num bytes to lock from start */
402 __u8 wait
; /* will caller wait for lock to become available? */
403 } __attribute__ ((packed
)) filelock_change
;
404 } __attribute__ ((packed
));
406 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
407 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
409 struct ceph_mds_request_head
{
410 __le64 oldest_client_tid
;
411 __le32 mdsmap_epoch
; /* on client */
412 __le32 flags
; /* CEPH_MDS_FLAG_* */
413 __u8 num_retry
, num_fwd
; /* count retry, fwd attempts */
414 __le16 num_releases
; /* # include cap/lease release records */
415 __le32 op
; /* mds op code */
416 __le32 caller_uid
, caller_gid
;
417 __le64 ino
; /* use this ino for openc, mkdir, mknod,
418 etc. (if replaying) */
419 union ceph_mds_request_args args
;
420 } __attribute__ ((packed
));
422 /* cap/lease release record */
423 struct ceph_mds_request_release
{
424 __le64 ino
, cap_id
; /* ino and unique cap id */
425 __le32 caps
, wanted
; /* new issued, wanted */
426 __le32 seq
, issue_seq
, mseq
;
427 __le32 dname_seq
; /* if releasing a dentry lease, a */
428 __le32 dname_len
; /* string follows. */
429 } __attribute__ ((packed
));
432 struct ceph_mds_reply_head
{
436 __u8 safe
; /* true if committed to disk */
437 __u8 is_dentry
, is_target
; /* true if dentry, target inode records
438 are included with reply */
439 } __attribute__ ((packed
));
441 /* one for each node split */
442 struct ceph_frag_tree_split
{
443 __le32 frag
; /* this frag splits... */
444 __le32 by
; /* ...by this many bits */
445 } __attribute__ ((packed
));
447 struct ceph_frag_tree_head
{
448 __le32 nsplits
; /* num ceph_frag_tree_split records */
449 struct ceph_frag_tree_split splits
[];
450 } __attribute__ ((packed
));
452 /* capability issue, for bundling with mds reply */
453 struct ceph_mds_reply_cap
{
454 __le32 caps
, wanted
; /* caps issued, wanted */
457 __le64 realm
; /* snap realm */
458 __u8 flags
; /* CEPH_CAP_FLAG_* */
459 } __attribute__ ((packed
));
461 #define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */
463 /* inode record, for bundling with mds reply */
464 struct ceph_mds_reply_inode
{
468 __le64 version
; /* inode version */
469 __le64 xattr_version
; /* version for xattr blob */
470 struct ceph_mds_reply_cap cap
; /* caps issued for this inode */
471 struct ceph_file_layout layout
;
472 struct ceph_timespec ctime
, mtime
, atime
;
473 __le32 time_warp_seq
;
474 __le64 size
, max_size
, truncate_size
;
476 __le32 mode
, uid
, gid
;
478 __le64 files
, subdirs
, rbytes
, rfiles
, rsubdirs
; /* dir stats */
479 struct ceph_timespec rctime
;
480 struct ceph_frag_tree_head fragtree
; /* (must be at end of struct) */
481 } __attribute__ ((packed
));
482 /* followed by frag array, symlink string, dir layout, xattr blob */
484 /* reply_lease follows dname, and reply_inode */
485 struct ceph_mds_reply_lease
{
486 __le16 mask
; /* lease type(s) */
487 __le32 duration_ms
; /* lease duration */
489 } __attribute__ ((packed
));
491 struct ceph_mds_reply_dirfrag
{
492 __le32 frag
; /* fragment */
493 __le32 auth
; /* auth mds, if this is a delegation point */
494 __le32 ndist
; /* number of mds' this is replicated on */
496 } __attribute__ ((packed
));
498 #define CEPH_LOCK_FCNTL 1
499 #define CEPH_LOCK_FLOCK 2
501 #define CEPH_LOCK_SHARED 1
502 #define CEPH_LOCK_EXCL 2
503 #define CEPH_LOCK_UNLOCK 4
505 struct ceph_filelock
{
506 __le64 start
;/* file offset to start lock at */
507 __le64 length
; /* num bytes to lock; 0 for all following start */
508 __le64 client
; /* which client holds the lock */
509 __le64 pid
; /* process id holding the lock on the client */
510 __le64 pid_namespace
;
511 __u8 type
; /* shared lock, exclusive lock, or unlock */
512 } __attribute__ ((packed
));
515 /* file access modes */
516 #define CEPH_FILE_MODE_PIN 0
517 #define CEPH_FILE_MODE_RD 1
518 #define CEPH_FILE_MODE_WR 2
519 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
520 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */
521 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */
523 int ceph_flags_to_mode(int flags
);
526 /* capability bits */
527 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
529 /* generic cap bits */
530 #define CEPH_CAP_GSHARED 1 /* client can reads */
531 #define CEPH_CAP_GEXCL 2 /* client can read and update */
532 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
533 #define CEPH_CAP_GRD 8 /* (file) client can read */
534 #define CEPH_CAP_GWR 16 /* (file) client can write */
535 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
536 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
537 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
540 #define CEPH_CAP_SAUTH 2
541 #define CEPH_CAP_SLINK 4
542 #define CEPH_CAP_SXATTR 6
543 #define CEPH_CAP_SFILE 8
544 #define CEPH_CAP_SFLOCK 20
546 #define CEPH_CAP_BITS 22
548 /* composed values */
549 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
550 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
551 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
552 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
553 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
554 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
555 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
556 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
557 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
558 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
559 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
560 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
561 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
562 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
563 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
564 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK)
565 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK)
568 /* cap masks (for getattr) */
569 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
570 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
571 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
572 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
573 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
574 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
575 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
576 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
577 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
578 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
579 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
580 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
581 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
582 CEPH_CAP_AUTH_SHARED | \
583 CEPH_CAP_LINK_SHARED | \
584 CEPH_CAP_FILE_SHARED | \
585 CEPH_CAP_XATTR_SHARED)
587 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
588 CEPH_CAP_LINK_SHARED | \
589 CEPH_CAP_XATTR_SHARED | \
590 CEPH_CAP_FILE_SHARED)
591 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
594 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
595 CEPH_CAP_LINK_EXCL | \
596 CEPH_CAP_XATTR_EXCL | \
598 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
600 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
601 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
602 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
605 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
608 int ceph_caps_for_mode(int mode
);
611 CEPH_CAP_OP_GRANT
, /* mds->client grant */
612 CEPH_CAP_OP_REVOKE
, /* mds->client revoke */
613 CEPH_CAP_OP_TRUNC
, /* mds->client trunc notify */
614 CEPH_CAP_OP_EXPORT
, /* mds has exported the cap */
615 CEPH_CAP_OP_IMPORT
, /* mds has imported the cap */
616 CEPH_CAP_OP_UPDATE
, /* client->mds update */
617 CEPH_CAP_OP_DROP
, /* client->mds drop cap bits */
618 CEPH_CAP_OP_FLUSH
, /* client->mds cap writeback */
619 CEPH_CAP_OP_FLUSH_ACK
, /* mds->client flushed */
620 CEPH_CAP_OP_FLUSHSNAP
, /* client->mds flush snapped metadata */
621 CEPH_CAP_OP_FLUSHSNAP_ACK
, /* mds->client flushed snapped metadata */
622 CEPH_CAP_OP_RELEASE
, /* client->mds release (clean) cap */
623 CEPH_CAP_OP_RENEW
, /* client->mds renewal request */
626 extern const char *ceph_cap_op_name(int op
);
629 * caps message, used for capability callbacks, acks, requests, etc.
631 struct ceph_mds_caps
{
632 __le32 op
; /* CEPH_CAP_OP_* */
635 __le32 seq
, issue_seq
;
636 __le32 caps
, wanted
, dirty
; /* latest issued/wanted/dirty */
639 __le32 snap_trace_len
;
642 __le32 uid
, gid
, mode
;
649 __le64 xattr_version
;
652 __le64 size
, max_size
, truncate_size
;
654 struct ceph_timespec mtime
, atime
, ctime
;
655 struct ceph_file_layout layout
;
656 __le32 time_warp_seq
;
657 } __attribute__ ((packed
));
659 /* cap release msg head */
660 struct ceph_mds_cap_release
{
661 __le32 num
; /* number of cap_items that follow */
662 } __attribute__ ((packed
));
664 struct ceph_mds_cap_item
{
667 __le32 migrate_seq
, seq
;
668 } __attribute__ ((packed
));
670 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
671 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
672 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
673 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
675 extern const char *ceph_lease_op_name(int o
);
677 /* lease msg header */
678 struct ceph_mds_lease
{
679 __u8 action
; /* CEPH_MDS_LEASE_* */
680 __le16 mask
; /* which lease */
682 __le64 first
, last
; /* snap range */
684 __le32 duration_ms
; /* duration of renewal */
685 } __attribute__ ((packed
));
686 /* followed by a __le32+string for dname */
688 /* client reconnect */
689 struct ceph_mds_cap_reconnect
{
694 __le64 pathbase
; /* base ino for our path to this ino */
695 __le32 flock_len
; /* size of flock state blob, if any */
696 } __attribute__ ((packed
));
697 /* followed by flock blob */
699 struct ceph_mds_cap_reconnect_v1
{
704 struct ceph_timespec mtime
, atime
;
706 __le64 pathbase
; /* base ino for our path to this ino */
707 } __attribute__ ((packed
));
709 struct ceph_mds_snaprealm_reconnect
{
710 __le64 ino
; /* snap realm base */
711 __le64 seq
; /* snap seq for this snap realm */
712 __le64 parent
; /* parent realm */
713 } __attribute__ ((packed
));
719 CEPH_SNAP_OP_UPDATE
, /* CREATE or DESTROY */
721 CEPH_SNAP_OP_DESTROY
,
725 extern const char *ceph_snap_op_name(int o
);
727 /* snap msg header */
728 struct ceph_mds_snap_head
{
729 __le32 op
; /* CEPH_SNAP_OP_* */
730 __le64 split
; /* ino to split off, if any */
731 __le32 num_split_inos
; /* # inos belonging to new child realm */
732 __le32 num_split_realms
; /* # child realms udner new child realm */
733 __le32 trace_len
; /* size of snap trace blob */
734 } __attribute__ ((packed
));
735 /* followed by split ino list, then split realms, then the trace blob */
738 * encode info about a snaprealm, as viewed by a client
740 struct ceph_mds_snap_realm
{
741 __le64 ino
; /* ino */
742 __le64 created
; /* snap: when created */
743 __le64 parent
; /* ino: parent realm */
744 __le64 parent_since
; /* snap: same parent since */
745 __le64 seq
; /* snap: version */
747 __le32 num_prior_parent_snaps
;
748 } __attribute__ ((packed
));
749 /* followed by my snap list, then prior parent snap list */