1 /* SPDX-License-Identifier: GPL-2.0 */
3 * ceph_fs.h - Ceph constants and data types to share between kernel and
6 * Most types in this file are defined as little-endian, and are
7 * primarily intended to describe data structures that pass over the
8 * wire or that are stored on disk.
16 #include <linux/ceph/msgr.h>
17 #include <linux/ceph/rados.h>
20 * subprotocol versions. when specific messages types or high-level
21 * protocols change, bump the affected components. we keep rev
22 * internal cluster protocols separately from the public,
23 * client-facing protocol.
25 #define CEPH_OSDC_PROTOCOL 24 /* server/client */
26 #define CEPH_MDSC_PROTOCOL 32 /* server/client */
27 #define CEPH_MONC_PROTOCOL 15 /* server/client */
30 #define CEPH_INO_ROOT 1
31 #define CEPH_INO_CEPH 2 /* hidden .ceph dir */
32 #define CEPH_INO_DOTDOT 3 /* used by ceph fuse for parent (..) */
34 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */
35 #define CEPH_MAX_MON 31
38 * legacy ceph_file_layoute
40 struct ceph_file_layout_legacy {
41 /* file -> object mapping */
42 __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple
44 __le32 fl_stripe_count; /* over this many objects */
45 __le32 fl_object_size; /* until objects are this big, then move to
47 __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */
49 /* pg -> disk layout */
50 __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */
52 /* object -> pg layout */
53 __le32 fl_unused; /* unused; used to be preferred primary for pg (-1 for none) */
54 __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */
55 } __attribute__ ((packed));
59 * ceph_file_layout - describe data layout for a file/inode
61 struct ceph_file_layout {
62 /* file -> object mapping */
63 u32 stripe_unit; /* stripe unit, in bytes */
64 u32 stripe_count; /* over this many objects */
65 u32 object_size; /* until objects are this big */
66 s64 pool_id; /* rados pool id */
67 struct ceph_string __rcu *pool_ns; /* rados pool namespace */
70 extern int ceph_file_layout_is_valid(const struct ceph_file_layout *layout);
71 extern void ceph_file_layout_from_legacy(struct ceph_file_layout *fl,
72 struct ceph_file_layout_legacy *legacy);
73 extern void ceph_file_layout_to_legacy(struct ceph_file_layout *fl,
74 struct ceph_file_layout_legacy *legacy);
76 #define CEPH_MIN_STRIPE_UNIT 65536
78 struct ceph_dir_layout {
79 __u8 dl_dir_hash; /* see ceph_hash.h for ids */
83 } __attribute__ ((packed));
85 /* crypto algorithms */
86 #define CEPH_CRYPTO_NONE 0x0
87 #define CEPH_CRYPTO_AES 0x1
89 #define CEPH_AES_IV "cephsageyudagreg"
91 /* security/authentication protocols */
92 #define CEPH_AUTH_UNKNOWN 0x0
93 #define CEPH_AUTH_NONE 0x1
94 #define CEPH_AUTH_CEPHX 0x2
96 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1)
99 /*********************************************
108 #define CEPH_MSG_SHUTDOWN 1
109 #define CEPH_MSG_PING 2
111 /* client <-> monitor */
112 #define CEPH_MSG_MON_MAP 4
113 #define CEPH_MSG_MON_GET_MAP 5
114 #define CEPH_MSG_STATFS 13
115 #define CEPH_MSG_STATFS_REPLY 14
116 #define CEPH_MSG_MON_SUBSCRIBE 15
117 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16
118 #define CEPH_MSG_AUTH 17
119 #define CEPH_MSG_AUTH_REPLY 18
120 #define CEPH_MSG_MON_GET_VERSION 19
121 #define CEPH_MSG_MON_GET_VERSION_REPLY 20
124 #define CEPH_MSG_MDS_MAP 21
125 #define CEPH_MSG_FS_MAP_USER 103
127 #define CEPH_MSG_CLIENT_SESSION 22
128 #define CEPH_MSG_CLIENT_RECONNECT 23
130 #define CEPH_MSG_CLIENT_REQUEST 24
131 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
132 #define CEPH_MSG_CLIENT_REPLY 26
133 #define CEPH_MSG_CLIENT_CAPS 0x310
134 #define CEPH_MSG_CLIENT_LEASE 0x311
135 #define CEPH_MSG_CLIENT_SNAP 0x312
136 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313
137 #define CEPH_MSG_CLIENT_QUOTA 0x314
140 #define CEPH_MSG_POOLOP_REPLY 48
141 #define CEPH_MSG_POOLOP 49
144 #define CEPH_MSG_MON_COMMAND 50
145 #define CEPH_MSG_MON_COMMAND_ACK 51
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
152 #define CEPH_MSG_OSD_BACKOFF 61
155 /* watch-notify operations */
157 CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */
158 CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */
159 CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */
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 __u8 contains_data_pool;
174 } __attribute__ ((packed));
177 __le64 kb, kb_used, kb_avail;
179 } __attribute__ ((packed));
181 struct ceph_mon_statfs_reply {
182 struct ceph_fsid fsid;
184 struct ceph_statfs st;
185 } __attribute__ ((packed));
187 struct ceph_mon_command {
188 struct ceph_mon_request_header monhdr;
189 struct ceph_fsid fsid;
190 __le32 num_strs; /* always 1 */
193 } __attribute__ ((packed));
195 struct ceph_osd_getmap {
196 struct ceph_mon_request_header monhdr;
197 struct ceph_fsid fsid;
199 } __attribute__ ((packed));
201 struct ceph_mds_getmap {
202 struct ceph_mon_request_header monhdr;
203 struct ceph_fsid fsid;
204 } __attribute__ ((packed));
206 struct ceph_client_mount {
207 struct ceph_mon_request_header monhdr;
208 } __attribute__ ((packed));
210 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
212 struct ceph_mon_subscribe_item {
215 } __attribute__ ((packed));
217 struct ceph_mon_subscribe_ack {
218 __le32 duration; /* seconds */
219 struct ceph_fsid fsid;
220 } __attribute__ ((packed));
222 #define CEPH_FS_CLUSTER_ID_NONE -1
227 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */
234 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
235 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
237 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
238 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
239 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
240 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
241 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
242 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */
244 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
245 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
246 operations (import, rename, etc.) */
247 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
248 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
249 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
250 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
251 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
253 extern const char *ceph_mds_state_name(int s);
257 * metadata lock types.
258 * - these are bitmasks.. we can compose them
259 * - they also define the lock ordering by the MDS
260 * - a few of these are internal to the mds
262 #define CEPH_LOCK_DVERSION 1
263 #define CEPH_LOCK_DN 2
264 #define CEPH_LOCK_ISNAP 16
265 #define CEPH_LOCK_IVERSION 32 /* mds internal */
266 #define CEPH_LOCK_IFILE 64
267 #define CEPH_LOCK_IAUTH 128
268 #define CEPH_LOCK_ILINK 256
269 #define CEPH_LOCK_IDFT 512 /* dir frag tree */
270 #define CEPH_LOCK_INEST 1024 /* mds internal */
271 #define CEPH_LOCK_IXATTR 2048
272 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */
273 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */
274 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */
276 /* client_session ops */
278 CEPH_SESSION_REQUEST_OPEN,
280 CEPH_SESSION_REQUEST_CLOSE,
282 CEPH_SESSION_REQUEST_RENEWCAPS,
283 CEPH_SESSION_RENEWCAPS,
285 CEPH_SESSION_RECALL_STATE,
286 CEPH_SESSION_FLUSHMSG,
287 CEPH_SESSION_FLUSHMSG_ACK,
288 CEPH_SESSION_FORCE_RO,
292 extern const char *ceph_session_op_name(int op);
294 struct ceph_mds_session_head {
297 struct ceph_timespec stamp;
298 __le32 max_caps, max_leases;
299 } __attribute__ ((packed));
304 * & 0x001000 -> write op
305 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
306 & & 0x100000 -> use weird ino/path trace
308 #define CEPH_MDS_OP_WRITE 0x001000
310 CEPH_MDS_OP_LOOKUP = 0x00100,
311 CEPH_MDS_OP_GETATTR = 0x00101,
312 CEPH_MDS_OP_LOOKUPHASH = 0x00102,
313 CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
314 CEPH_MDS_OP_LOOKUPINO = 0x00104,
315 CEPH_MDS_OP_LOOKUPNAME = 0x00105,
317 CEPH_MDS_OP_SETXATTR = 0x01105,
318 CEPH_MDS_OP_RMXATTR = 0x01106,
319 CEPH_MDS_OP_SETLAYOUT = 0x01107,
320 CEPH_MDS_OP_SETATTR = 0x01108,
321 CEPH_MDS_OP_SETFILELOCK= 0x01109,
322 CEPH_MDS_OP_GETFILELOCK= 0x00110,
323 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a,
325 CEPH_MDS_OP_MKNOD = 0x01201,
326 CEPH_MDS_OP_LINK = 0x01202,
327 CEPH_MDS_OP_UNLINK = 0x01203,
328 CEPH_MDS_OP_RENAME = 0x01204,
329 CEPH_MDS_OP_MKDIR = 0x01220,
330 CEPH_MDS_OP_RMDIR = 0x01221,
331 CEPH_MDS_OP_SYMLINK = 0x01222,
333 CEPH_MDS_OP_CREATE = 0x01301,
334 CEPH_MDS_OP_OPEN = 0x00302,
335 CEPH_MDS_OP_READDIR = 0x00305,
337 CEPH_MDS_OP_LOOKUPSNAP = 0x00400,
338 CEPH_MDS_OP_MKSNAP = 0x01400,
339 CEPH_MDS_OP_RMSNAP = 0x01401,
340 CEPH_MDS_OP_LSSNAP = 0x00402,
341 CEPH_MDS_OP_RENAMESNAP = 0x01403,
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
356 * Ceph setxattr request flags.
358 #define CEPH_XATTR_CREATE (1 << 0)
359 #define CEPH_XATTR_REPLACE (1 << 1)
360 #define CEPH_XATTR_REMOVE (1 << 31)
363 * readdir request flags;
365 #define CEPH_READDIR_REPLY_BITFLAGS (1<<0)
368 * readdir reply flags.
370 #define CEPH_READDIR_FRAG_END (1<<0)
371 #define CEPH_READDIR_FRAG_COMPLETE (1<<8)
372 #define CEPH_READDIR_HASH_ORDER (1<<9)
373 #define CEPH_READDIR_OFFSET_HASH (1<<10)
378 #define CEPH_O_RDONLY 00000000
379 #define CEPH_O_WRONLY 00000001
380 #define CEPH_O_RDWR 00000002
381 #define CEPH_O_CREAT 00000100
382 #define CEPH_O_EXCL 00000200
383 #define CEPH_O_TRUNC 00001000
384 #define CEPH_O_DIRECTORY 00200000
385 #define CEPH_O_NOFOLLOW 00400000
387 union ceph_mds_request_args {
389 __le32 mask; /* CEPH_CAP_* */
390 } __attribute__ ((packed)) getattr;
395 struct ceph_timespec mtime;
396 struct ceph_timespec atime;
397 __le64 size, old_size; /* old_size needed by truncate */
398 __le32 mask; /* CEPH_SETATTR_* */
399 } __attribute__ ((packed)) setattr;
401 __le32 frag; /* which dir fragment */
402 __le32 max_entries; /* how many dentries to grab */
406 } __attribute__ ((packed)) readdir;
410 } __attribute__ ((packed)) mknod;
413 } __attribute__ ((packed)) mkdir;
417 __le32 stripe_unit; /* layout for newly created file */
418 __le32 stripe_count; /* ... */
420 __le32 file_replication;
421 __le32 mask; /* CEPH_CAP_* */
423 } __attribute__ ((packed)) open;
426 } __attribute__ ((packed)) setxattr;
428 struct ceph_file_layout_legacy layout;
429 } __attribute__ ((packed)) setlayout;
431 __u8 rule; /* currently fcntl or flock */
432 __u8 type; /* shared, exclusive, remove*/
433 __le64 owner; /* owner of the lock */
434 __le64 pid; /* process id requesting the lock */
435 __le64 start; /* initial location to lock */
436 __le64 length; /* num bytes to lock from start */
437 __u8 wait; /* will caller wait for lock to become available? */
438 } __attribute__ ((packed)) filelock_change;
440 __le32 mask; /* CEPH_CAP_* */
444 } __attribute__ ((packed)) lookupino;
445 } __attribute__ ((packed));
447 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
448 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
450 struct ceph_mds_request_head {
451 __le64 oldest_client_tid;
452 __le32 mdsmap_epoch; /* on client */
453 __le32 flags; /* CEPH_MDS_FLAG_* */
454 __u8 num_retry, num_fwd; /* count retry, fwd attempts */
455 __le16 num_releases; /* # include cap/lease release records */
456 __le32 op; /* mds op code */
457 __le32 caller_uid, caller_gid;
458 __le64 ino; /* use this ino for openc, mkdir, mknod,
459 etc. (if replaying) */
460 union ceph_mds_request_args args;
461 } __attribute__ ((packed));
463 /* cap/lease release record */
464 struct ceph_mds_request_release {
465 __le64 ino, cap_id; /* ino and unique cap id */
466 __le32 caps, wanted; /* new issued, wanted */
467 __le32 seq, issue_seq, mseq;
468 __le32 dname_seq; /* if releasing a dentry lease, a */
469 __le32 dname_len; /* string follows. */
470 } __attribute__ ((packed));
473 struct ceph_mds_reply_head {
477 __u8 safe; /* true if committed to disk */
478 __u8 is_dentry, is_target; /* true if dentry, target inode records
479 are included with reply */
480 } __attribute__ ((packed));
482 /* one for each node split */
483 struct ceph_frag_tree_split {
484 __le32 frag; /* this frag splits... */
485 __le32 by; /* ...by this many bits */
486 } __attribute__ ((packed));
488 struct ceph_frag_tree_head {
489 __le32 nsplits; /* num ceph_frag_tree_split records */
490 struct ceph_frag_tree_split splits[];
491 } __attribute__ ((packed));
493 /* capability issue, for bundling with mds reply */
494 struct ceph_mds_reply_cap {
495 __le32 caps, wanted; /* caps issued, wanted */
498 __le64 realm; /* snap realm */
499 __u8 flags; /* CEPH_CAP_FLAG_* */
500 } __attribute__ ((packed));
502 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */
503 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */
505 /* inode record, for bundling with mds reply */
506 struct ceph_mds_reply_inode {
510 __le64 version; /* inode version */
511 __le64 xattr_version; /* version for xattr blob */
512 struct ceph_mds_reply_cap cap; /* caps issued for this inode */
513 struct ceph_file_layout_legacy layout;
514 struct ceph_timespec ctime, mtime, atime;
515 __le32 time_warp_seq;
516 __le64 size, max_size, truncate_size;
518 __le32 mode, uid, gid;
520 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */
521 struct ceph_timespec rctime;
522 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */
523 } __attribute__ ((packed));
524 /* followed by frag array, symlink string, dir layout, xattr blob */
526 /* reply_lease follows dname, and reply_inode */
527 struct ceph_mds_reply_lease {
528 __le16 mask; /* lease type(s) */
529 __le32 duration_ms; /* lease duration */
531 } __attribute__ ((packed));
533 struct ceph_mds_reply_dirfrag {
534 __le32 frag; /* fragment */
535 __le32 auth; /* auth mds, if this is a delegation point */
536 __le32 ndist; /* number of mds' this is replicated on */
538 } __attribute__ ((packed));
540 #define CEPH_LOCK_FCNTL 1
541 #define CEPH_LOCK_FLOCK 2
542 #define CEPH_LOCK_FCNTL_INTR 3
543 #define CEPH_LOCK_FLOCK_INTR 4
546 #define CEPH_LOCK_SHARED 1
547 #define CEPH_LOCK_EXCL 2
548 #define CEPH_LOCK_UNLOCK 4
550 struct ceph_filelock {
551 __le64 start;/* file offset to start lock at */
552 __le64 length; /* num bytes to lock; 0 for all following start */
553 __le64 client; /* which client holds the lock */
554 __le64 owner; /* owner the lock */
555 __le64 pid; /* process id holding the lock on the client */
556 __u8 type; /* shared lock, exclusive lock, or unlock */
557 } __attribute__ ((packed));
560 /* file access modes */
561 #define CEPH_FILE_MODE_PIN 0
562 #define CEPH_FILE_MODE_RD 1
563 #define CEPH_FILE_MODE_WR 2
564 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
565 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */
566 #define CEPH_FILE_MODE_BITS 4
568 int ceph_flags_to_mode(int flags);
570 #define CEPH_INLINE_NONE ((__u64)-1)
572 /* capability bits */
573 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
575 /* generic cap bits */
576 #define CEPH_CAP_GSHARED 1 /* client can reads */
577 #define CEPH_CAP_GEXCL 2 /* client can read and update */
578 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
579 #define CEPH_CAP_GRD 8 /* (file) client can read */
580 #define CEPH_CAP_GWR 16 /* (file) client can write */
581 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
582 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
583 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
585 #define CEPH_CAP_SIMPLE_BITS 2
586 #define CEPH_CAP_FILE_BITS 8
589 #define CEPH_CAP_SAUTH 2
590 #define CEPH_CAP_SLINK 4
591 #define CEPH_CAP_SXATTR 6
592 #define CEPH_CAP_SFILE 8
593 #define CEPH_CAP_SFLOCK 20
595 #define CEPH_CAP_BITS 22
597 /* composed values */
598 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
599 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
600 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
601 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
602 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
603 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
604 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
605 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
606 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
607 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
608 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
609 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
610 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
611 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
612 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
613 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK)
614 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK)
617 /* cap masks (for getattr) */
618 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
619 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
620 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
621 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
622 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
623 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
624 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
625 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
626 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
627 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
628 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
629 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
630 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
631 CEPH_CAP_AUTH_SHARED | \
632 CEPH_CAP_LINK_SHARED | \
633 CEPH_CAP_FILE_SHARED | \
634 CEPH_CAP_XATTR_SHARED)
635 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \
637 #define CEPH_STAT_RSTAT CEPH_CAP_FILE_WREXTEND
639 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
640 CEPH_CAP_LINK_SHARED | \
641 CEPH_CAP_XATTR_SHARED | \
642 CEPH_CAP_FILE_SHARED)
643 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
646 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
647 CEPH_CAP_LINK_EXCL | \
648 CEPH_CAP_XATTR_EXCL | \
650 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \
651 CEPH_CAP_FILE_SHARED)
652 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
654 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
655 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
656 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \
659 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
662 int ceph_caps_for_mode(int mode);
665 CEPH_CAP_OP_GRANT, /* mds->client grant */
666 CEPH_CAP_OP_REVOKE, /* mds->client revoke */
667 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */
668 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */
669 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */
670 CEPH_CAP_OP_UPDATE, /* client->mds update */
671 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */
672 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */
673 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */
674 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */
675 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */
676 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */
677 CEPH_CAP_OP_RENEW, /* client->mds renewal request */
680 extern const char *ceph_cap_op_name(int op);
682 /* flags field in client cap messages (version >= 10) */
683 #define CEPH_CLIENT_CAPS_SYNC (1<<0)
684 #define CEPH_CLIENT_CAPS_NO_CAPSNAP (1<<1)
685 #define CEPH_CLIENT_CAPS_PENDING_CAPSNAP (1<<2)
688 * caps message, used for capability callbacks, acks, requests, etc.
690 struct ceph_mds_caps {
691 __le32 op; /* CEPH_CAP_OP_* */
694 __le32 seq, issue_seq;
695 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */
698 __le32 snap_trace_len;
701 __le32 uid, gid, mode;
708 __le64 xattr_version;
711 __le64 size, max_size, truncate_size;
713 struct ceph_timespec mtime, atime, ctime;
714 struct ceph_file_layout_legacy layout;
715 __le32 time_warp_seq;
716 } __attribute__ ((packed));
718 struct ceph_mds_cap_peer {
724 } __attribute__ ((packed));
726 /* cap release msg head */
727 struct ceph_mds_cap_release {
728 __le32 num; /* number of cap_items that follow */
729 } __attribute__ ((packed));
731 struct ceph_mds_cap_item {
734 __le32 migrate_seq, seq;
735 } __attribute__ ((packed));
737 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
738 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
739 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
740 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
742 extern const char *ceph_lease_op_name(int o);
744 /* lease msg header */
745 struct ceph_mds_lease {
746 __u8 action; /* CEPH_MDS_LEASE_* */
747 __le16 mask; /* which lease */
749 __le64 first, last; /* snap range */
751 __le32 duration_ms; /* duration of renewal */
752 } __attribute__ ((packed));
753 /* followed by a __le32+string for dname */
755 /* client reconnect */
756 struct ceph_mds_cap_reconnect {
761 __le64 pathbase; /* base ino for our path to this ino */
762 __le32 flock_len; /* size of flock state blob, if any */
763 } __attribute__ ((packed));
764 /* followed by flock blob */
766 struct ceph_mds_cap_reconnect_v1 {
771 struct ceph_timespec mtime, atime;
773 __le64 pathbase; /* base ino for our path to this ino */
774 } __attribute__ ((packed));
776 struct ceph_mds_snaprealm_reconnect {
777 __le64 ino; /* snap realm base */
778 __le64 seq; /* snap seq for this snap realm */
779 __le64 parent; /* parent realm */
780 } __attribute__ ((packed));
786 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */
788 CEPH_SNAP_OP_DESTROY,
792 extern const char *ceph_snap_op_name(int o);
794 /* snap msg header */
795 struct ceph_mds_snap_head {
796 __le32 op; /* CEPH_SNAP_OP_* */
797 __le64 split; /* ino to split off, if any */
798 __le32 num_split_inos; /* # inos belonging to new child realm */
799 __le32 num_split_realms; /* # child realms udner new child realm */
800 __le32 trace_len; /* size of snap trace blob */
801 } __attribute__ ((packed));
802 /* followed by split ino list, then split realms, then the trace blob */
805 * encode info about a snaprealm, as viewed by a client
807 struct ceph_mds_snap_realm {
808 __le64 ino; /* ino */
809 __le64 created; /* snap: when created */
810 __le64 parent; /* ino: parent realm */
811 __le64 parent_since; /* snap: same parent since */
812 __le64 seq; /* snap: version */
814 __le32 num_prior_parent_snaps;
815 } __attribute__ ((packed));
816 /* followed by my snap list, then prior parent snap list */
821 struct ceph_mds_quota {
822 __le64 ino; /* ino */
823 struct ceph_timespec rctime;
824 __le64 rbytes; /* dir stats */
827 __u8 struct_v; /* compat */
830 __le64 max_bytes; /* quota max. bytes */
831 __le64 max_files; /* quota max. files */
832 } __attribute__ ((packed));