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
143 #define CEPH_MSG_OSD_MAP 41
144 #define CEPH_MSG_OSD_OP 42
145 #define CEPH_MSG_OSD_OPREPLY 43
146 #define CEPH_MSG_WATCH_NOTIFY 44
149 /* watch-notify operations */
151 CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */
152 CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */
153 CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */
157 struct ceph_mon_request_header {
160 __le64 session_mon_tid;
161 } __attribute__ ((packed));
163 struct ceph_mon_statfs {
164 struct ceph_mon_request_header monhdr;
165 struct ceph_fsid fsid;
166 } __attribute__ ((packed));
169 __le64 kb, kb_used, kb_avail;
171 } __attribute__ ((packed));
173 struct ceph_mon_statfs_reply {
174 struct ceph_fsid fsid;
176 struct ceph_statfs st;
177 } __attribute__ ((packed));
179 struct ceph_osd_getmap {
180 struct ceph_mon_request_header monhdr;
181 struct ceph_fsid fsid;
183 } __attribute__ ((packed));
185 struct ceph_mds_getmap {
186 struct ceph_mon_request_header monhdr;
187 struct ceph_fsid fsid;
188 } __attribute__ ((packed));
190 struct ceph_client_mount {
191 struct ceph_mon_request_header monhdr;
192 } __attribute__ ((packed));
194 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
196 struct ceph_mon_subscribe_item {
199 } __attribute__ ((packed));
201 struct ceph_mon_subscribe_ack {
202 __le32 duration; /* seconds */
203 struct ceph_fsid fsid;
204 } __attribute__ ((packed));
206 #define CEPH_FS_CLUSTER_ID_NONE -1
211 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */
218 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
219 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
221 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
222 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
223 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
224 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
225 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
226 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */
228 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
229 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
230 operations (import, rename, etc.) */
231 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
232 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
233 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
234 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
235 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
237 extern const char *ceph_mds_state_name(int s);
241 * metadata lock types.
242 * - these are bitmasks.. we can compose them
243 * - they also define the lock ordering by the MDS
244 * - a few of these are internal to the mds
246 #define CEPH_LOCK_DVERSION 1
247 #define CEPH_LOCK_DN 2
248 #define CEPH_LOCK_ISNAP 16
249 #define CEPH_LOCK_IVERSION 32 /* mds internal */
250 #define CEPH_LOCK_IFILE 64
251 #define CEPH_LOCK_IAUTH 128
252 #define CEPH_LOCK_ILINK 256
253 #define CEPH_LOCK_IDFT 512 /* dir frag tree */
254 #define CEPH_LOCK_INEST 1024 /* mds internal */
255 #define CEPH_LOCK_IXATTR 2048
256 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
257 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
258 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */
260 /* client_session ops */
262 CEPH_SESSION_REQUEST_OPEN,
264 CEPH_SESSION_REQUEST_CLOSE,
266 CEPH_SESSION_REQUEST_RENEWCAPS,
267 CEPH_SESSION_RENEWCAPS,
269 CEPH_SESSION_RECALL_STATE,
270 CEPH_SESSION_FLUSHMSG,
271 CEPH_SESSION_FLUSHMSG_ACK,
272 CEPH_SESSION_FORCE_RO,
275 extern const char *ceph_session_op_name(int op);
277 struct ceph_mds_session_head {
280 struct ceph_timespec stamp;
281 __le32 max_caps, max_leases;
282 } __attribute__ ((packed));
287 * & 0x001000 -> write op
288 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
289 & & 0x100000 -> use weird ino/path trace
291 #define CEPH_MDS_OP_WRITE 0x001000
293 CEPH_MDS_OP_LOOKUP = 0x00100,
294 CEPH_MDS_OP_GETATTR = 0x00101,
295 CEPH_MDS_OP_LOOKUPHASH = 0x00102,
296 CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
297 CEPH_MDS_OP_LOOKUPINO = 0x00104,
298 CEPH_MDS_OP_LOOKUPNAME = 0x00105,
300 CEPH_MDS_OP_SETXATTR = 0x01105,
301 CEPH_MDS_OP_RMXATTR = 0x01106,
302 CEPH_MDS_OP_SETLAYOUT = 0x01107,
303 CEPH_MDS_OP_SETATTR = 0x01108,
304 CEPH_MDS_OP_SETFILELOCK= 0x01109,
305 CEPH_MDS_OP_GETFILELOCK= 0x00110,
306 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a,
308 CEPH_MDS_OP_MKNOD = 0x01201,
309 CEPH_MDS_OP_LINK = 0x01202,
310 CEPH_MDS_OP_UNLINK = 0x01203,
311 CEPH_MDS_OP_RENAME = 0x01204,
312 CEPH_MDS_OP_MKDIR = 0x01220,
313 CEPH_MDS_OP_RMDIR = 0x01221,
314 CEPH_MDS_OP_SYMLINK = 0x01222,
316 CEPH_MDS_OP_CREATE = 0x01301,
317 CEPH_MDS_OP_OPEN = 0x00302,
318 CEPH_MDS_OP_READDIR = 0x00305,
320 CEPH_MDS_OP_LOOKUPSNAP = 0x00400,
321 CEPH_MDS_OP_MKSNAP = 0x01400,
322 CEPH_MDS_OP_RMSNAP = 0x01401,
323 CEPH_MDS_OP_LSSNAP = 0x00402,
324 CEPH_MDS_OP_RENAMESNAP = 0x01403,
327 extern const char *ceph_mds_op_name(int op);
330 #define CEPH_SETATTR_MODE 1
331 #define CEPH_SETATTR_UID 2
332 #define CEPH_SETATTR_GID 4
333 #define CEPH_SETATTR_MTIME 8
334 #define CEPH_SETATTR_ATIME 16
335 #define CEPH_SETATTR_SIZE 32
336 #define CEPH_SETATTR_CTIME 64
339 * Ceph setxattr request flags.
341 #define CEPH_XATTR_CREATE (1 << 0)
342 #define CEPH_XATTR_REPLACE (1 << 1)
343 #define CEPH_XATTR_REMOVE (1 << 31)
346 * readdir request flags;
348 #define CEPH_READDIR_REPLY_BITFLAGS (1<<0)
351 * readdir reply flags.
353 #define CEPH_READDIR_FRAG_END (1<<0)
354 #define CEPH_READDIR_FRAG_COMPLETE (1<<8)
355 #define CEPH_READDIR_HASH_ORDER (1<<9)
357 union ceph_mds_request_args {
359 __le32 mask; /* CEPH_CAP_* */
360 } __attribute__ ((packed)) getattr;
365 struct ceph_timespec mtime;
366 struct ceph_timespec atime;
367 __le64 size, old_size; /* old_size needed by truncate */
368 __le32 mask; /* CEPH_SETATTR_* */
369 } __attribute__ ((packed)) setattr;
371 __le32 frag; /* which dir fragment */
372 __le32 max_entries; /* how many dentries to grab */
375 } __attribute__ ((packed)) readdir;
379 } __attribute__ ((packed)) mknod;
382 } __attribute__ ((packed)) mkdir;
386 __le32 stripe_unit; /* layout for newly created file */
387 __le32 stripe_count; /* ... */
389 __le32 file_replication;
390 __le32 mask; /* CEPH_CAP_* */
392 } __attribute__ ((packed)) open;
395 } __attribute__ ((packed)) setxattr;
397 struct ceph_file_layout_legacy layout;
398 } __attribute__ ((packed)) setlayout;
400 __u8 rule; /* currently fcntl or flock */
401 __u8 type; /* shared, exclusive, remove*/
402 __le64 owner; /* owner of the lock */
403 __le64 pid; /* process id requesting the lock */
404 __le64 start; /* initial location to lock */
405 __le64 length; /* num bytes to lock from start */
406 __u8 wait; /* will caller wait for lock to become available? */
407 } __attribute__ ((packed)) filelock_change;
408 } __attribute__ ((packed));
410 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
411 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
413 struct ceph_mds_request_head {
414 __le64 oldest_client_tid;
415 __le32 mdsmap_epoch; /* on client */
416 __le32 flags; /* CEPH_MDS_FLAG_* */
417 __u8 num_retry, num_fwd; /* count retry, fwd attempts */
418 __le16 num_releases; /* # include cap/lease release records */
419 __le32 op; /* mds op code */
420 __le32 caller_uid, caller_gid;
421 __le64 ino; /* use this ino for openc, mkdir, mknod,
422 etc. (if replaying) */
423 union ceph_mds_request_args args;
424 } __attribute__ ((packed));
426 /* cap/lease release record */
427 struct ceph_mds_request_release {
428 __le64 ino, cap_id; /* ino and unique cap id */
429 __le32 caps, wanted; /* new issued, wanted */
430 __le32 seq, issue_seq, mseq;
431 __le32 dname_seq; /* if releasing a dentry lease, a */
432 __le32 dname_len; /* string follows. */
433 } __attribute__ ((packed));
436 struct ceph_mds_reply_head {
440 __u8 safe; /* true if committed to disk */
441 __u8 is_dentry, is_target; /* true if dentry, target inode records
442 are included with reply */
443 } __attribute__ ((packed));
445 /* one for each node split */
446 struct ceph_frag_tree_split {
447 __le32 frag; /* this frag splits... */
448 __le32 by; /* ...by this many bits */
449 } __attribute__ ((packed));
451 struct ceph_frag_tree_head {
452 __le32 nsplits; /* num ceph_frag_tree_split records */
453 struct ceph_frag_tree_split splits[];
454 } __attribute__ ((packed));
456 /* capability issue, for bundling with mds reply */
457 struct ceph_mds_reply_cap {
458 __le32 caps, wanted; /* caps issued, wanted */
461 __le64 realm; /* snap realm */
462 __u8 flags; /* CEPH_CAP_FLAG_* */
463 } __attribute__ ((packed));
465 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */
466 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */
468 /* inode record, for bundling with mds reply */
469 struct ceph_mds_reply_inode {
473 __le64 version; /* inode version */
474 __le64 xattr_version; /* version for xattr blob */
475 struct ceph_mds_reply_cap cap; /* caps issued for this inode */
476 struct ceph_file_layout_legacy layout;
477 struct ceph_timespec ctime, mtime, atime;
478 __le32 time_warp_seq;
479 __le64 size, max_size, truncate_size;
481 __le32 mode, uid, gid;
483 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */
484 struct ceph_timespec rctime;
485 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */
486 } __attribute__ ((packed));
487 /* followed by frag array, symlink string, dir layout, xattr blob */
489 /* reply_lease follows dname, and reply_inode */
490 struct ceph_mds_reply_lease {
491 __le16 mask; /* lease type(s) */
492 __le32 duration_ms; /* lease duration */
494 } __attribute__ ((packed));
496 struct ceph_mds_reply_dirfrag {
497 __le32 frag; /* fragment */
498 __le32 auth; /* auth mds, if this is a delegation point */
499 __le32 ndist; /* number of mds' this is replicated on */
501 } __attribute__ ((packed));
503 #define CEPH_LOCK_FCNTL 1
504 #define CEPH_LOCK_FLOCK 2
505 #define CEPH_LOCK_FCNTL_INTR 3
506 #define CEPH_LOCK_FLOCK_INTR 4
509 #define CEPH_LOCK_SHARED 1
510 #define CEPH_LOCK_EXCL 2
511 #define CEPH_LOCK_UNLOCK 4
513 struct ceph_filelock {
514 __le64 start;/* file offset to start lock at */
515 __le64 length; /* num bytes to lock; 0 for all following start */
516 __le64 client; /* which client holds the lock */
517 __le64 owner; /* owner the lock */
518 __le64 pid; /* process id holding the lock on the client */
519 __u8 type; /* shared lock, exclusive lock, or unlock */
520 } __attribute__ ((packed));
523 /* file access modes */
524 #define CEPH_FILE_MODE_PIN 0
525 #define CEPH_FILE_MODE_RD 1
526 #define CEPH_FILE_MODE_WR 2
527 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
528 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */
529 #define CEPH_FILE_MODE_BITS 4
531 int ceph_flags_to_mode(int flags);
533 #define CEPH_INLINE_NONE ((__u64)-1)
535 /* capability bits */
536 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
538 /* generic cap bits */
539 #define CEPH_CAP_GSHARED 1 /* client can reads */
540 #define CEPH_CAP_GEXCL 2 /* client can read and update */
541 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
542 #define CEPH_CAP_GRD 8 /* (file) client can read */
543 #define CEPH_CAP_GWR 16 /* (file) client can write */
544 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
545 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
546 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
548 #define CEPH_CAP_SIMPLE_BITS 2
549 #define CEPH_CAP_FILE_BITS 8
552 #define CEPH_CAP_SAUTH 2
553 #define CEPH_CAP_SLINK 4
554 #define CEPH_CAP_SXATTR 6
555 #define CEPH_CAP_SFILE 8
556 #define CEPH_CAP_SFLOCK 20
558 #define CEPH_CAP_BITS 22
560 /* composed values */
561 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
562 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
563 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
564 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
565 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
566 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
567 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
568 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
569 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
570 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
571 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
572 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
573 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
574 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
575 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
576 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK)
577 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK)
580 /* cap masks (for getattr) */
581 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
582 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
583 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
584 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
585 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
586 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
587 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
588 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
589 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
590 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
591 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
592 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
593 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
594 CEPH_CAP_AUTH_SHARED | \
595 CEPH_CAP_LINK_SHARED | \
596 CEPH_CAP_FILE_SHARED | \
597 CEPH_CAP_XATTR_SHARED)
598 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \
601 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
602 CEPH_CAP_LINK_SHARED | \
603 CEPH_CAP_XATTR_SHARED | \
604 CEPH_CAP_FILE_SHARED)
605 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
608 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
609 CEPH_CAP_LINK_EXCL | \
610 CEPH_CAP_XATTR_EXCL | \
612 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \
613 CEPH_CAP_FILE_SHARED)
614 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
616 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
617 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
618 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
621 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
624 int ceph_caps_for_mode(int mode);
627 CEPH_CAP_OP_GRANT, /* mds->client grant */
628 CEPH_CAP_OP_REVOKE, /* mds->client revoke */
629 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */
630 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */
631 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */
632 CEPH_CAP_OP_UPDATE, /* client->mds update */
633 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */
634 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */
635 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */
636 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */
637 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */
638 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */
639 CEPH_CAP_OP_RENEW, /* client->mds renewal request */
642 extern const char *ceph_cap_op_name(int op);
645 * caps message, used for capability callbacks, acks, requests, etc.
647 struct ceph_mds_caps {
648 __le32 op; /* CEPH_CAP_OP_* */
651 __le32 seq, issue_seq;
652 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */
655 __le32 snap_trace_len;
658 __le32 uid, gid, mode;
665 __le64 xattr_version;
668 __le64 size, max_size, truncate_size;
670 struct ceph_timespec mtime, atime, ctime;
671 struct ceph_file_layout_legacy layout;
672 __le32 time_warp_seq;
673 } __attribute__ ((packed));
675 struct ceph_mds_cap_peer {
681 } __attribute__ ((packed));
683 /* cap release msg head */
684 struct ceph_mds_cap_release {
685 __le32 num; /* number of cap_items that follow */
686 } __attribute__ ((packed));
688 struct ceph_mds_cap_item {
691 __le32 migrate_seq, seq;
692 } __attribute__ ((packed));
694 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
695 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
696 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
697 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
699 extern const char *ceph_lease_op_name(int o);
701 /* lease msg header */
702 struct ceph_mds_lease {
703 __u8 action; /* CEPH_MDS_LEASE_* */
704 __le16 mask; /* which lease */
706 __le64 first, last; /* snap range */
708 __le32 duration_ms; /* duration of renewal */
709 } __attribute__ ((packed));
710 /* followed by a __le32+string for dname */
712 /* client reconnect */
713 struct ceph_mds_cap_reconnect {
718 __le64 pathbase; /* base ino for our path to this ino */
719 __le32 flock_len; /* size of flock state blob, if any */
720 } __attribute__ ((packed));
721 /* followed by flock blob */
723 struct ceph_mds_cap_reconnect_v1 {
728 struct ceph_timespec mtime, atime;
730 __le64 pathbase; /* base ino for our path to this ino */
731 } __attribute__ ((packed));
733 struct ceph_mds_snaprealm_reconnect {
734 __le64 ino; /* snap realm base */
735 __le64 seq; /* snap seq for this snap realm */
736 __le64 parent; /* parent realm */
737 } __attribute__ ((packed));
743 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */
745 CEPH_SNAP_OP_DESTROY,
749 extern const char *ceph_snap_op_name(int o);
751 /* snap msg header */
752 struct ceph_mds_snap_head {
753 __le32 op; /* CEPH_SNAP_OP_* */
754 __le64 split; /* ino to split off, if any */
755 __le32 num_split_inos; /* # inos belonging to new child realm */
756 __le32 num_split_realms; /* # child realms udner new child realm */
757 __le32 trace_len; /* size of snap trace blob */
758 } __attribute__ ((packed));
759 /* followed by split ino list, then split realms, then the trace blob */
762 * encode info about a snaprealm, as viewed by a client
764 struct ceph_mds_snap_realm {
765 __le64 ino; /* ino */
766 __le64 created; /* snap: when created */
767 __le64 parent; /* ino: parent realm */
768 __le64 parent_since; /* snap: same parent since */
769 __le64 seq; /* snap: version */
771 __le32 num_prior_parent_snaps;
772 } __attribute__ ((packed));
773 /* followed by my snap list, then prior parent snap list */