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_file_layout_su(l) ((__s32)le32_to_cpu((l).fl_stripe_unit))
57 #define ceph_file_layout_stripe_count(l) \
58 ((__s32)le32_to_cpu((l).fl_stripe_count))
59 #define ceph_file_layout_object_size(l) ((__s32)le32_to_cpu((l).fl_object_size))
60 #define ceph_file_layout_cas_hash(l) ((__s32)le32_to_cpu((l).fl_cas_hash))
61 #define ceph_file_layout_object_su(l) \
62 ((__s32)le32_to_cpu((l).fl_object_stripe_unit))
63 #define ceph_file_layout_pg_pool(l) \
64 ((__s32)le32_to_cpu((l).fl_pg_pool))
66 static inline unsigned ceph_file_layout_stripe_width(struct ceph_file_layout *l)
68 return le32_to_cpu(l->fl_stripe_unit) *
69 le32_to_cpu(l->fl_stripe_count);
72 /* "period" == bytes before i start on a new set of objects */
73 static inline unsigned ceph_file_layout_period(struct ceph_file_layout *l)
75 return le32_to_cpu(l->fl_object_size) *
76 le32_to_cpu(l->fl_stripe_count);
79 #define CEPH_MIN_STRIPE_UNIT 65536
81 int ceph_file_layout_is_valid(const struct ceph_file_layout *layout);
83 struct ceph_dir_layout {
84 __u8 dl_dir_hash; /* see ceph_hash.h for ids */
88 } __attribute__ ((packed));
90 /* crypto algorithms */
91 #define CEPH_CRYPTO_NONE 0x0
92 #define CEPH_CRYPTO_AES 0x1
94 #define CEPH_AES_IV "cephsageyudagreg"
96 /* security/authentication protocols */
97 #define CEPH_AUTH_UNKNOWN 0x0
98 #define CEPH_AUTH_NONE 0x1
99 #define CEPH_AUTH_CEPHX 0x2
101 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1)
104 /*********************************************
113 #define CEPH_MSG_SHUTDOWN 1
114 #define CEPH_MSG_PING 2
116 /* client <-> monitor */
117 #define CEPH_MSG_MON_MAP 4
118 #define CEPH_MSG_MON_GET_MAP 5
119 #define CEPH_MSG_STATFS 13
120 #define CEPH_MSG_STATFS_REPLY 14
121 #define CEPH_MSG_MON_SUBSCRIBE 15
122 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16
123 #define CEPH_MSG_AUTH 17
124 #define CEPH_MSG_AUTH_REPLY 18
125 #define CEPH_MSG_MON_GET_VERSION 19
126 #define CEPH_MSG_MON_GET_VERSION_REPLY 20
129 #define CEPH_MSG_MDS_MAP 21
131 #define CEPH_MSG_CLIENT_SESSION 22
132 #define CEPH_MSG_CLIENT_RECONNECT 23
134 #define CEPH_MSG_CLIENT_REQUEST 24
135 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
136 #define CEPH_MSG_CLIENT_REPLY 26
137 #define CEPH_MSG_CLIENT_CAPS 0x310
138 #define CEPH_MSG_CLIENT_LEASE 0x311
139 #define CEPH_MSG_CLIENT_SNAP 0x312
140 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313
143 #define CEPH_MSG_POOLOP_REPLY 48
144 #define CEPH_MSG_POOLOP 49
148 #define CEPH_MSG_OSD_MAP 41
149 #define CEPH_MSG_OSD_OP 42
150 #define CEPH_MSG_OSD_OPREPLY 43
151 #define CEPH_MSG_WATCH_NOTIFY 44
154 /* watch-notify operations */
156 WATCH_NOTIFY = 1, /* notifying watcher */
157 WATCH_NOTIFY_COMPLETE = 2, /* notifier notified when done */
161 struct ceph_mon_request_header {
164 __le64 session_mon_tid;
165 } __attribute__ ((packed));
167 struct ceph_mon_statfs {
168 struct ceph_mon_request_header monhdr;
169 struct ceph_fsid fsid;
170 } __attribute__ ((packed));
173 __le64 kb, kb_used, kb_avail;
175 } __attribute__ ((packed));
177 struct ceph_mon_statfs_reply {
178 struct ceph_fsid fsid;
180 struct ceph_statfs st;
181 } __attribute__ ((packed));
183 struct ceph_osd_getmap {
184 struct ceph_mon_request_header monhdr;
185 struct ceph_fsid fsid;
187 } __attribute__ ((packed));
189 struct ceph_mds_getmap {
190 struct ceph_mon_request_header monhdr;
191 struct ceph_fsid fsid;
192 } __attribute__ ((packed));
194 struct ceph_client_mount {
195 struct ceph_mon_request_header monhdr;
196 } __attribute__ ((packed));
198 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
200 struct ceph_mon_subscribe_item {
201 __le64 have_version; __le64 have;
203 } __attribute__ ((packed));
205 struct ceph_mon_subscribe_ack {
206 __le32 duration; /* seconds */
207 struct ceph_fsid fsid;
208 } __attribute__ ((packed));
213 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */
220 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
221 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
223 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
224 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
225 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
226 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
227 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
228 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */
230 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
231 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
232 operations (import, rename, etc.) */
233 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
234 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
235 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
236 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
237 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
239 extern const char *ceph_mds_state_name(int s);
243 * metadata lock types.
244 * - these are bitmasks.. we can compose them
245 * - they also define the lock ordering by the MDS
246 * - a few of these are internal to the mds
248 #define CEPH_LOCK_DVERSION 1
249 #define CEPH_LOCK_DN 2
250 #define CEPH_LOCK_ISNAP 16
251 #define CEPH_LOCK_IVERSION 32 /* mds internal */
252 #define CEPH_LOCK_IFILE 64
253 #define CEPH_LOCK_IAUTH 128
254 #define CEPH_LOCK_ILINK 256
255 #define CEPH_LOCK_IDFT 512 /* dir frag tree */
256 #define CEPH_LOCK_INEST 1024 /* mds internal */
257 #define CEPH_LOCK_IXATTR 2048
258 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
259 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
260 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */
262 /* client_session ops */
264 CEPH_SESSION_REQUEST_OPEN,
266 CEPH_SESSION_REQUEST_CLOSE,
268 CEPH_SESSION_REQUEST_RENEWCAPS,
269 CEPH_SESSION_RENEWCAPS,
271 CEPH_SESSION_RECALL_STATE,
272 CEPH_SESSION_FLUSHMSG,
273 CEPH_SESSION_FLUSHMSG_ACK,
274 CEPH_SESSION_FORCE_RO,
277 extern const char *ceph_session_op_name(int op);
279 struct ceph_mds_session_head {
282 struct ceph_timespec stamp;
283 __le32 max_caps, max_leases;
284 } __attribute__ ((packed));
289 * & 0x001000 -> write op
290 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
291 & & 0x100000 -> use weird ino/path trace
293 #define CEPH_MDS_OP_WRITE 0x001000
295 CEPH_MDS_OP_LOOKUP = 0x00100,
296 CEPH_MDS_OP_GETATTR = 0x00101,
297 CEPH_MDS_OP_LOOKUPHASH = 0x00102,
298 CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
299 CEPH_MDS_OP_LOOKUPINO = 0x00104,
300 CEPH_MDS_OP_LOOKUPNAME = 0x00105,
302 CEPH_MDS_OP_SETXATTR = 0x01105,
303 CEPH_MDS_OP_RMXATTR = 0x01106,
304 CEPH_MDS_OP_SETLAYOUT = 0x01107,
305 CEPH_MDS_OP_SETATTR = 0x01108,
306 CEPH_MDS_OP_SETFILELOCK= 0x01109,
307 CEPH_MDS_OP_GETFILELOCK= 0x00110,
308 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a,
310 CEPH_MDS_OP_MKNOD = 0x01201,
311 CEPH_MDS_OP_LINK = 0x01202,
312 CEPH_MDS_OP_UNLINK = 0x01203,
313 CEPH_MDS_OP_RENAME = 0x01204,
314 CEPH_MDS_OP_MKDIR = 0x01220,
315 CEPH_MDS_OP_RMDIR = 0x01221,
316 CEPH_MDS_OP_SYMLINK = 0x01222,
318 CEPH_MDS_OP_CREATE = 0x01301,
319 CEPH_MDS_OP_OPEN = 0x00302,
320 CEPH_MDS_OP_READDIR = 0x00305,
322 CEPH_MDS_OP_LOOKUPSNAP = 0x00400,
323 CEPH_MDS_OP_MKSNAP = 0x01400,
324 CEPH_MDS_OP_RMSNAP = 0x01401,
325 CEPH_MDS_OP_LSSNAP = 0x00402,
326 CEPH_MDS_OP_RENAMESNAP = 0x01403,
329 extern const char *ceph_mds_op_name(int op);
332 #define CEPH_SETATTR_MODE 1
333 #define CEPH_SETATTR_UID 2
334 #define CEPH_SETATTR_GID 4
335 #define CEPH_SETATTR_MTIME 8
336 #define CEPH_SETATTR_ATIME 16
337 #define CEPH_SETATTR_SIZE 32
338 #define CEPH_SETATTR_CTIME 64
341 * Ceph setxattr request flags.
343 #define CEPH_XATTR_CREATE (1 << 0)
344 #define CEPH_XATTR_REPLACE (1 << 1)
345 #define CEPH_XATTR_REMOVE (1 << 31)
347 union ceph_mds_request_args {
349 __le32 mask; /* CEPH_CAP_* */
350 } __attribute__ ((packed)) getattr;
355 struct ceph_timespec mtime;
356 struct ceph_timespec atime;
357 __le64 size, old_size; /* old_size needed by truncate */
358 __le32 mask; /* CEPH_SETATTR_* */
359 } __attribute__ ((packed)) setattr;
361 __le32 frag; /* which dir fragment */
362 __le32 max_entries; /* how many dentries to grab */
364 } __attribute__ ((packed)) readdir;
368 } __attribute__ ((packed)) mknod;
371 } __attribute__ ((packed)) mkdir;
375 __le32 stripe_unit; /* layout for newly created file */
376 __le32 stripe_count; /* ... */
378 __le32 file_replication;
379 __le32 unused; /* used to be preferred osd */
380 } __attribute__ ((packed)) open;
383 } __attribute__ ((packed)) setxattr;
385 struct ceph_file_layout layout;
386 } __attribute__ ((packed)) setlayout;
388 __u8 rule; /* currently fcntl or flock */
389 __u8 type; /* shared, exclusive, remove*/
390 __le64 owner; /* owner of the lock */
391 __le64 pid; /* process id requesting the lock */
392 __le64 start; /* initial location to lock */
393 __le64 length; /* num bytes to lock from start */
394 __u8 wait; /* will caller wait for lock to become available? */
395 } __attribute__ ((packed)) filelock_change;
396 } __attribute__ ((packed));
398 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
399 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
401 struct ceph_mds_request_head {
402 __le64 oldest_client_tid;
403 __le32 mdsmap_epoch; /* on client */
404 __le32 flags; /* CEPH_MDS_FLAG_* */
405 __u8 num_retry, num_fwd; /* count retry, fwd attempts */
406 __le16 num_releases; /* # include cap/lease release records */
407 __le32 op; /* mds op code */
408 __le32 caller_uid, caller_gid;
409 __le64 ino; /* use this ino for openc, mkdir, mknod,
410 etc. (if replaying) */
411 union ceph_mds_request_args args;
412 } __attribute__ ((packed));
414 /* cap/lease release record */
415 struct ceph_mds_request_release {
416 __le64 ino, cap_id; /* ino and unique cap id */
417 __le32 caps, wanted; /* new issued, wanted */
418 __le32 seq, issue_seq, mseq;
419 __le32 dname_seq; /* if releasing a dentry lease, a */
420 __le32 dname_len; /* string follows. */
421 } __attribute__ ((packed));
424 struct ceph_mds_reply_head {
428 __u8 safe; /* true if committed to disk */
429 __u8 is_dentry, is_target; /* true if dentry, target inode records
430 are included with reply */
431 } __attribute__ ((packed));
433 /* one for each node split */
434 struct ceph_frag_tree_split {
435 __le32 frag; /* this frag splits... */
436 __le32 by; /* ...by this many bits */
437 } __attribute__ ((packed));
439 struct ceph_frag_tree_head {
440 __le32 nsplits; /* num ceph_frag_tree_split records */
441 struct ceph_frag_tree_split splits[];
442 } __attribute__ ((packed));
444 /* capability issue, for bundling with mds reply */
445 struct ceph_mds_reply_cap {
446 __le32 caps, wanted; /* caps issued, wanted */
449 __le64 realm; /* snap realm */
450 __u8 flags; /* CEPH_CAP_FLAG_* */
451 } __attribute__ ((packed));
453 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */
454 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */
456 /* inode record, for bundling with mds reply */
457 struct ceph_mds_reply_inode {
461 __le64 version; /* inode version */
462 __le64 xattr_version; /* version for xattr blob */
463 struct ceph_mds_reply_cap cap; /* caps issued for this inode */
464 struct ceph_file_layout layout;
465 struct ceph_timespec ctime, mtime, atime;
466 __le32 time_warp_seq;
467 __le64 size, max_size, truncate_size;
469 __le32 mode, uid, gid;
471 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */
472 struct ceph_timespec rctime;
473 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */
474 } __attribute__ ((packed));
475 /* followed by frag array, symlink string, dir layout, xattr blob */
477 /* reply_lease follows dname, and reply_inode */
478 struct ceph_mds_reply_lease {
479 __le16 mask; /* lease type(s) */
480 __le32 duration_ms; /* lease duration */
482 } __attribute__ ((packed));
484 struct ceph_mds_reply_dirfrag {
485 __le32 frag; /* fragment */
486 __le32 auth; /* auth mds, if this is a delegation point */
487 __le32 ndist; /* number of mds' this is replicated on */
489 } __attribute__ ((packed));
491 #define CEPH_LOCK_FCNTL 1
492 #define CEPH_LOCK_FLOCK 2
493 #define CEPH_LOCK_FCNTL_INTR 3
494 #define CEPH_LOCK_FLOCK_INTR 4
497 #define CEPH_LOCK_SHARED 1
498 #define CEPH_LOCK_EXCL 2
499 #define CEPH_LOCK_UNLOCK 4
501 struct ceph_filelock {
502 __le64 start;/* file offset to start lock at */
503 __le64 length; /* num bytes to lock; 0 for all following start */
504 __le64 client; /* which client holds the lock */
505 __le64 owner; /* owner the lock */
506 __le64 pid; /* process id holding the lock on the client */
507 __u8 type; /* shared lock, exclusive lock, or unlock */
508 } __attribute__ ((packed));
511 /* file access modes */
512 #define CEPH_FILE_MODE_PIN 0
513 #define CEPH_FILE_MODE_RD 1
514 #define CEPH_FILE_MODE_WR 2
515 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
516 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */
517 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */
519 int ceph_flags_to_mode(int flags);
521 #define CEPH_INLINE_NONE ((__u64)-1)
523 /* capability bits */
524 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
526 /* generic cap bits */
527 #define CEPH_CAP_GSHARED 1 /* client can reads */
528 #define CEPH_CAP_GEXCL 2 /* client can read and update */
529 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
530 #define CEPH_CAP_GRD 8 /* (file) client can read */
531 #define CEPH_CAP_GWR 16 /* (file) client can write */
532 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
533 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
534 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
536 #define CEPH_CAP_SIMPLE_BITS 2
537 #define CEPH_CAP_FILE_BITS 8
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)
586 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_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_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \
601 CEPH_CAP_FILE_SHARED)
602 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
604 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
605 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
606 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
609 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
612 int ceph_caps_for_mode(int mode);
615 CEPH_CAP_OP_GRANT, /* mds->client grant */
616 CEPH_CAP_OP_REVOKE, /* mds->client revoke */
617 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */
618 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */
619 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */
620 CEPH_CAP_OP_UPDATE, /* client->mds update */
621 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */
622 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */
623 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */
624 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */
625 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */
626 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */
627 CEPH_CAP_OP_RENEW, /* client->mds renewal request */
630 extern const char *ceph_cap_op_name(int op);
633 * caps message, used for capability callbacks, acks, requests, etc.
635 struct ceph_mds_caps {
636 __le32 op; /* CEPH_CAP_OP_* */
639 __le32 seq, issue_seq;
640 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */
643 __le32 snap_trace_len;
646 __le32 uid, gid, mode;
653 __le64 xattr_version;
656 __le64 size, max_size, truncate_size;
658 struct ceph_timespec mtime, atime, ctime;
659 struct ceph_file_layout layout;
660 __le32 time_warp_seq;
661 } __attribute__ ((packed));
663 struct ceph_mds_cap_peer {
669 } __attribute__ ((packed));
671 /* cap release msg head */
672 struct ceph_mds_cap_release {
673 __le32 num; /* number of cap_items that follow */
674 } __attribute__ ((packed));
676 struct ceph_mds_cap_item {
679 __le32 migrate_seq, seq;
680 } __attribute__ ((packed));
682 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
683 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
684 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
685 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
687 extern const char *ceph_lease_op_name(int o);
689 /* lease msg header */
690 struct ceph_mds_lease {
691 __u8 action; /* CEPH_MDS_LEASE_* */
692 __le16 mask; /* which lease */
694 __le64 first, last; /* snap range */
696 __le32 duration_ms; /* duration of renewal */
697 } __attribute__ ((packed));
698 /* followed by a __le32+string for dname */
700 /* client reconnect */
701 struct ceph_mds_cap_reconnect {
706 __le64 pathbase; /* base ino for our path to this ino */
707 __le32 flock_len; /* size of flock state blob, if any */
708 } __attribute__ ((packed));
709 /* followed by flock blob */
711 struct ceph_mds_cap_reconnect_v1 {
716 struct ceph_timespec mtime, atime;
718 __le64 pathbase; /* base ino for our path to this ino */
719 } __attribute__ ((packed));
721 struct ceph_mds_snaprealm_reconnect {
722 __le64 ino; /* snap realm base */
723 __le64 seq; /* snap seq for this snap realm */
724 __le64 parent; /* parent realm */
725 } __attribute__ ((packed));
731 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */
733 CEPH_SNAP_OP_DESTROY,
737 extern const char *ceph_snap_op_name(int o);
739 /* snap msg header */
740 struct ceph_mds_snap_head {
741 __le32 op; /* CEPH_SNAP_OP_* */
742 __le64 split; /* ino to split off, if any */
743 __le32 num_split_inos; /* # inos belonging to new child realm */
744 __le32 num_split_realms; /* # child realms udner new child realm */
745 __le32 trace_len; /* size of snap trace blob */
746 } __attribute__ ((packed));
747 /* followed by split ino list, then split realms, then the trace blob */
750 * encode info about a snaprealm, as viewed by a client
752 struct ceph_mds_snap_realm {
753 __le64 ino; /* ino */
754 __le64 created; /* snap: when created */
755 __le64 parent; /* ino: parent realm */
756 __le64 parent_since; /* snap: same parent since */
757 __le64 seq; /* snap: version */
759 __le32 num_prior_parent_snaps;
760 } __attribute__ ((packed));
761 /* followed by my snap list, then prior parent snap list */