]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | /* |
2 | * ceph_fs.h - Ceph constants and data types to share between kernel and | |
3 | * user space. | |
4 | * | |
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. | |
8 | * | |
9 | * LGPL2 | |
10 | */ | |
11 | ||
12 | #ifndef CEPH_FS_H | |
13 | #define CEPH_FS_H | |
14 | ||
15 | #include "msgr.h" | |
16 | #include "rados.h" | |
17 | ||
18 | /* | |
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. | |
23 | */ | |
24 | #define CEPH_OSDC_PROTOCOL 24 /* server/client */ | |
25 | #define CEPH_MDSC_PROTOCOL 32 /* server/client */ | |
26 | #define CEPH_MONC_PROTOCOL 15 /* server/client */ | |
27 | ||
28 | ||
29 | #define CEPH_INO_ROOT 1 | |
30 | #define CEPH_INO_CEPH 2 /* hidden .ceph dir */ | |
31 | #define CEPH_INO_LOST_AND_FOUND 4 /* reserved ino for use in recovery */ | |
32 | ||
33 | /* arbitrary limit on max # of monitors (cluster of 3 is typical) */ | |
34 | #define CEPH_MAX_MON 31 | |
35 | ||
36 | /* | |
37 | * ceph_file_layout - describe data layout for a file/inode | |
38 | */ | |
39 | struct ceph_file_layout { | |
40 | /* file -> object mapping */ | |
41 | __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple | |
42 | of page size. */ | |
43 | __le32 fl_stripe_count; /* over this many objects */ | |
44 | __le32 fl_object_size; /* until objects are this big, then move to | |
45 | new objects */ | |
46 | __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */ | |
47 | ||
48 | /* pg -> disk layout */ | |
49 | __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */ | |
50 | ||
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)); | |
55 | ||
56 | #define CEPH_MIN_STRIPE_UNIT 65536 | |
57 | ||
58 | struct ceph_dir_layout { | |
59 | __u8 dl_dir_hash; /* see ceph_hash.h for ids */ | |
60 | __u8 dl_unused1; | |
61 | __u16 dl_unused2; | |
62 | __u32 dl_unused3; | |
63 | } __attribute__ ((packed)); | |
64 | ||
65 | /* crypto algorithms */ | |
66 | #define CEPH_CRYPTO_NONE 0x0 | |
67 | #define CEPH_CRYPTO_AES 0x1 | |
68 | ||
69 | #define CEPH_AES_IV "cephsageyudagreg" | |
70 | ||
71 | /* security/authentication protocols */ | |
72 | #define CEPH_AUTH_UNKNOWN 0x0 | |
73 | #define CEPH_AUTH_NONE 0x1 | |
74 | #define CEPH_AUTH_CEPHX 0x2 | |
75 | ||
76 | #define CEPH_AUTH_UID_DEFAULT ((__u64) -1) | |
77 | ||
78 | ||
79 | /********************************************* | |
80 | * message layer | |
81 | */ | |
82 | ||
83 | /* | |
84 | * message types | |
85 | */ | |
86 | ||
87 | /* misc */ | |
88 | #define CEPH_MSG_SHUTDOWN 1 | |
89 | #define CEPH_MSG_PING 2 | |
90 | ||
91 | /* client <-> monitor */ | |
92 | #define CEPH_MSG_MON_MAP 4 | |
93 | #define CEPH_MSG_MON_GET_MAP 5 | |
94 | #define CEPH_MSG_MON_GET_OSDMAP 6 | |
95 | #define CEPH_MSG_MON_METADATA 7 | |
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 | |
104 | ||
105 | /* client <-> mds */ | |
106 | #define CEPH_MSG_MDS_MAP 21 | |
107 | ||
108 | #define CEPH_MSG_CLIENT_SESSION 22 | |
109 | #define CEPH_MSG_CLIENT_RECONNECT 23 | |
110 | ||
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 | |
118 | #define CEPH_MSG_CLIENT_QUOTA 0x314 | |
119 | ||
120 | /* pool ops */ | |
121 | #define CEPH_MSG_POOLOP_REPLY 48 | |
122 | #define CEPH_MSG_POOLOP 49 | |
123 | ||
124 | ||
125 | /* osd */ | |
126 | #define CEPH_MSG_OSD_MAP 41 | |
127 | #define CEPH_MSG_OSD_OP 42 | |
128 | #define CEPH_MSG_OSD_OPREPLY 43 | |
129 | #define CEPH_MSG_WATCH_NOTIFY 44 | |
130 | #define CEPH_MSG_OSD_BACKOFF 61 | |
131 | ||
132 | /* FSMap subscribers (see all MDS clusters at once) */ | |
133 | #define CEPH_MSG_FS_MAP 45 | |
134 | /* FSMapUser subscribers (get MDS clusters name->ID mapping) */ | |
135 | #define CEPH_MSG_FS_MAP_USER 103 | |
136 | ||
137 | /* watch-notify operations */ | |
138 | enum { | |
139 | CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */ | |
140 | CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */ | |
141 | CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */ | |
142 | }; | |
143 | ||
144 | const char *ceph_watch_event_name(int o); | |
145 | ||
146 | /* pool operations */ | |
147 | enum { | |
148 | POOL_OP_CREATE = 0x01, | |
149 | POOL_OP_DELETE = 0x02, | |
150 | POOL_OP_AUID_CHANGE = 0x03, | |
151 | POOL_OP_CREATE_SNAP = 0x11, | |
152 | POOL_OP_DELETE_SNAP = 0x12, | |
153 | POOL_OP_CREATE_UNMANAGED_SNAP = 0x21, | |
154 | POOL_OP_DELETE_UNMANAGED_SNAP = 0x22, | |
155 | }; | |
156 | ||
157 | struct ceph_mon_request_header { | |
158 | __le64 have_version; | |
159 | __le16 session_mon; | |
160 | __le64 session_mon_tid; | |
161 | } __attribute__ ((packed)); | |
162 | ||
163 | struct ceph_mon_statfs { | |
164 | struct ceph_mon_request_header monhdr; | |
165 | struct ceph_fsid fsid; | |
166 | } __attribute__ ((packed)); | |
167 | ||
168 | struct ceph_statfs { | |
169 | __le64 kb, kb_used, kb_avail; | |
170 | __le64 num_objects; | |
171 | } __attribute__ ((packed)); | |
172 | ||
173 | struct ceph_mon_statfs_reply { | |
174 | struct ceph_fsid fsid; | |
175 | __le64 version; | |
176 | struct ceph_statfs st; | |
177 | } __attribute__ ((packed)); | |
178 | ||
179 | const char *ceph_pool_op_name(int op); | |
180 | ||
181 | struct ceph_mon_poolop { | |
182 | struct ceph_mon_request_header monhdr; | |
183 | struct ceph_fsid fsid; | |
184 | __le32 pool; | |
185 | __le32 op; | |
186 | __le64 auid; | |
187 | __le64 snapid; | |
188 | __le32 name_len; | |
189 | } __attribute__ ((packed)); | |
190 | ||
191 | struct ceph_mon_poolop_reply { | |
192 | struct ceph_mon_request_header monhdr; | |
193 | struct ceph_fsid fsid; | |
194 | __le32 reply_code; | |
195 | __le32 epoch; | |
196 | char has_data; | |
197 | char data[0]; | |
198 | } __attribute__ ((packed)); | |
199 | ||
200 | struct ceph_mon_unmanaged_snap { | |
201 | __le64 snapid; | |
202 | } __attribute__ ((packed)); | |
203 | ||
204 | struct ceph_osd_getmap { | |
205 | struct ceph_mon_request_header monhdr; | |
206 | struct ceph_fsid fsid; | |
207 | __le32 start; | |
208 | } __attribute__ ((packed)); | |
209 | ||
210 | struct ceph_mds_getmap { | |
211 | struct ceph_mon_request_header monhdr; | |
212 | struct ceph_fsid fsid; | |
213 | } __attribute__ ((packed)); | |
214 | ||
215 | struct ceph_client_mount { | |
216 | struct ceph_mon_request_header monhdr; | |
217 | } __attribute__ ((packed)); | |
218 | ||
219 | #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ | |
220 | ||
221 | struct ceph_mon_subscribe_item { | |
222 | __le64 start; | |
223 | __u8 flags; | |
224 | } __attribute__ ((packed)); | |
225 | ||
226 | struct ceph_mon_subscribe_ack { | |
227 | __le32 duration; /* seconds */ | |
228 | struct ceph_fsid fsid; | |
229 | } __attribute__ ((packed)); | |
230 | ||
231 | /* | |
232 | * mdsmap flags | |
233 | */ | |
234 | #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ | |
235 | #define CEPH_MDSMAP_ALLOW_SNAPS (1<<1) /* cluster allowed to create snapshots */ | |
236 | #define CEPH_MDSMAP_ALLOW_MULTIMDS (1<<2) /* cluster allowed to have >1 active MDS */ | |
237 | #define CEPH_MDSMAP_ALLOW_DIRFRAGS (1<<3) /* cluster allowed to fragment directories */ | |
238 | ||
239 | #define CEPH_MDSMAP_ALLOW_CLASSICS (CEPH_MDSMAP_ALLOW_SNAPS | CEPH_MDSMAP_ALLOW_MULTIMDS | \ | |
240 | CEPH_MDSMAP_ALLOW_DIRFRAGS) | |
241 | ||
242 | #define CEPH_MDSMAP_DEFAULTS CEPH_MDSMAP_ALLOW_DIRFRAGS | |
243 | ||
244 | /* | |
245 | * mds states | |
246 | * > 0 -> in | |
247 | * <= 0 -> out | |
248 | */ | |
249 | #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ | |
250 | #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. | |
251 | empty log. */ | |
252 | #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ | |
253 | #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ | |
254 | #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ | |
255 | #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ | |
256 | #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ | |
257 | #define CEPH_MDS_STATE_REPLAYONCE -9 /* Legacy, unused */ | |
258 | #define CEPH_MDS_STATE_NULL -10 | |
259 | ||
260 | #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ | |
261 | #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed | |
262 | operations (import, rename, etc.) */ | |
263 | #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ | |
264 | #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ | |
265 | #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ | |
266 | #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ | |
267 | #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ | |
268 | #define CEPH_MDS_STATE_DAMAGED 15 /* rank not replayable, need repair */ | |
269 | ||
270 | extern const char *ceph_mds_state_name(int s); | |
271 | ||
272 | ||
273 | /* | |
274 | * metadata lock types. | |
275 | * - these are bitmasks.. we can compose them | |
276 | * - they also define the lock ordering by the MDS | |
277 | * - a few of these are internal to the mds | |
278 | */ | |
279 | #define CEPH_LOCK_DVERSION 1 | |
280 | #define CEPH_LOCK_DN 2 | |
281 | #define CEPH_LOCK_ISNAP 16 | |
282 | #define CEPH_LOCK_IVERSION 32 /* mds internal */ | |
283 | #define CEPH_LOCK_IFILE 64 | |
284 | #define CEPH_LOCK_IAUTH 128 | |
285 | #define CEPH_LOCK_ILINK 256 | |
286 | #define CEPH_LOCK_IDFT 512 /* dir frag tree */ | |
287 | #define CEPH_LOCK_INEST 1024 /* mds internal */ | |
288 | #define CEPH_LOCK_IXATTR 2048 | |
289 | #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ | |
290 | #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ | |
291 | #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ | |
292 | ||
293 | /* client_session ops */ | |
294 | enum { | |
295 | CEPH_SESSION_REQUEST_OPEN, | |
296 | CEPH_SESSION_OPEN, | |
297 | CEPH_SESSION_REQUEST_CLOSE, | |
298 | CEPH_SESSION_CLOSE, | |
299 | CEPH_SESSION_REQUEST_RENEWCAPS, | |
300 | CEPH_SESSION_RENEWCAPS, | |
301 | CEPH_SESSION_STALE, | |
302 | CEPH_SESSION_RECALL_STATE, | |
303 | CEPH_SESSION_FLUSHMSG, | |
304 | CEPH_SESSION_FLUSHMSG_ACK, | |
305 | CEPH_SESSION_FORCE_RO, | |
306 | // A response to REQUEST_OPEN indicating that the client should | |
307 | // permanently desist from contacting the MDS | |
31f18b77 FG |
308 | CEPH_SESSION_REJECT, |
309 | CEPH_SESSION_REQUEST_FLUSH_MDLOG | |
7c673cae FG |
310 | }; |
311 | ||
312 | extern const char *ceph_session_op_name(int op); | |
313 | ||
314 | struct ceph_mds_session_head { | |
315 | __le32 op; | |
316 | __le64 seq; | |
317 | struct ceph_timespec stamp; | |
318 | __le32 max_caps, max_leases; | |
319 | } __attribute__ ((packed)); | |
320 | ||
321 | /* client_request */ | |
322 | /* | |
323 | * metadata ops. | |
324 | * & 0x001000 -> write op | |
325 | * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). | |
326 | & & 0x100000 -> use weird ino/path trace | |
327 | */ | |
328 | #define CEPH_MDS_OP_WRITE 0x001000 | |
329 | enum { | |
330 | CEPH_MDS_OP_LOOKUP = 0x00100, | |
331 | CEPH_MDS_OP_GETATTR = 0x00101, | |
332 | CEPH_MDS_OP_LOOKUPHASH = 0x00102, | |
333 | CEPH_MDS_OP_LOOKUPPARENT = 0x00103, | |
334 | CEPH_MDS_OP_LOOKUPINO = 0x00104, | |
335 | CEPH_MDS_OP_LOOKUPNAME = 0x00105, | |
336 | ||
337 | CEPH_MDS_OP_SETXATTR = 0x01105, | |
338 | CEPH_MDS_OP_RMXATTR = 0x01106, | |
339 | CEPH_MDS_OP_SETLAYOUT = 0x01107, | |
340 | CEPH_MDS_OP_SETATTR = 0x01108, | |
341 | CEPH_MDS_OP_SETFILELOCK= 0x01109, | |
342 | CEPH_MDS_OP_GETFILELOCK= 0x00110, | |
343 | CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, | |
344 | ||
345 | CEPH_MDS_OP_MKNOD = 0x01201, | |
346 | CEPH_MDS_OP_LINK = 0x01202, | |
347 | CEPH_MDS_OP_UNLINK = 0x01203, | |
348 | CEPH_MDS_OP_RENAME = 0x01204, | |
349 | CEPH_MDS_OP_MKDIR = 0x01220, | |
350 | CEPH_MDS_OP_RMDIR = 0x01221, | |
351 | CEPH_MDS_OP_SYMLINK = 0x01222, | |
352 | ||
353 | CEPH_MDS_OP_CREATE = 0x01301, | |
354 | CEPH_MDS_OP_OPEN = 0x00302, | |
355 | CEPH_MDS_OP_READDIR = 0x00305, | |
356 | ||
357 | CEPH_MDS_OP_LOOKUPSNAP = 0x00400, | |
358 | CEPH_MDS_OP_MKSNAP = 0x01400, | |
359 | CEPH_MDS_OP_RMSNAP = 0x01401, | |
360 | CEPH_MDS_OP_LSSNAP = 0x00402, | |
361 | CEPH_MDS_OP_RENAMESNAP = 0x01403, | |
362 | ||
363 | // internal op | |
364 | CEPH_MDS_OP_FRAGMENTDIR= 0x01500, | |
365 | CEPH_MDS_OP_EXPORTDIR = 0x01501, | |
366 | CEPH_MDS_OP_FLUSH = 0x01502, | |
367 | CEPH_MDS_OP_ENQUEUE_SCRUB = 0x01503, | |
368 | CEPH_MDS_OP_REPAIR_FRAGSTATS = 0x01504, | |
369 | CEPH_MDS_OP_REPAIR_INODESTATS = 0x01505 | |
370 | }; | |
371 | ||
372 | extern const char *ceph_mds_op_name(int op); | |
373 | ||
374 | #ifndef CEPH_SETATTR_MODE | |
375 | #define CEPH_SETATTR_MODE (1 << 0) | |
376 | #define CEPH_SETATTR_UID (1 << 1) | |
377 | #define CEPH_SETATTR_GID (1 << 2) | |
378 | #define CEPH_SETATTR_MTIME (1 << 3) | |
379 | #define CEPH_SETATTR_ATIME (1 << 4) | |
380 | #define CEPH_SETATTR_SIZE (1 << 5) | |
381 | #define CEPH_SETATTR_CTIME (1 << 6) | |
382 | #define CEPH_SETATTR_BTIME (1 << 9) | |
383 | #endif | |
384 | #define CEPH_SETATTR_MTIME_NOW (1 << 7) | |
385 | #define CEPH_SETATTR_ATIME_NOW (1 << 8) | |
386 | #define CEPH_SETATTR_KILL_SGUID (1 << 10) | |
387 | ||
388 | /* | |
389 | * open request flags | |
390 | */ | |
391 | #define CEPH_O_RDONLY 00000000 | |
392 | #define CEPH_O_WRONLY 00000001 | |
393 | #define CEPH_O_RDWR 00000002 | |
394 | #define CEPH_O_CREAT 00000100 | |
395 | #define CEPH_O_EXCL 00000200 | |
396 | #define CEPH_O_TRUNC 00001000 | |
397 | #define CEPH_O_DIRECTORY 00200000 | |
398 | #define CEPH_O_NOFOLLOW 00400000 | |
399 | ||
400 | int ceph_flags_sys2wire(int flags); | |
401 | ||
402 | /* | |
403 | * Ceph setxattr request flags. | |
404 | */ | |
405 | #define CEPH_XATTR_CREATE (1 << 0) | |
406 | #define CEPH_XATTR_REPLACE (1 << 1) | |
407 | #define CEPH_XATTR_REMOVE (1 << 31) | |
408 | ||
409 | /* | |
410 | * readdir request flags; | |
411 | */ | |
412 | #define CEPH_READDIR_REPLY_BITFLAGS (1<<0) | |
413 | ||
414 | /* | |
415 | * readdir reply flags. | |
416 | */ | |
417 | #define CEPH_READDIR_FRAG_END (1<<0) | |
418 | #define CEPH_READDIR_FRAG_COMPLETE (1<<8) | |
419 | #define CEPH_READDIR_HASH_ORDER (1<<9) | |
420 | #define CEPH_READDIR_OFFSET_HASH (1<<10) | |
421 | ||
422 | /* Note that this is embedded wthin ceph_mds_request_head_legacy. */ | |
423 | union ceph_mds_request_args_legacy { | |
424 | struct { | |
425 | __le32 mask; /* CEPH_CAP_* */ | |
426 | } __attribute__ ((packed)) getattr; | |
427 | struct { | |
428 | __le32 mode; | |
429 | __le32 uid; | |
430 | __le32 gid; | |
431 | struct ceph_timespec mtime; | |
432 | struct ceph_timespec atime; | |
433 | __le64 size, old_size; /* old_size needed by truncate */ | |
434 | __le32 mask; /* CEPH_SETATTR_* */ | |
435 | } __attribute__ ((packed)) setattr; | |
436 | struct { | |
437 | __le32 frag; /* which dir fragment */ | |
438 | __le32 max_entries; /* how many dentries to grab */ | |
439 | __le32 max_bytes; | |
440 | __le16 flags; | |
441 | __le32 offset_hash; | |
442 | } __attribute__ ((packed)) readdir; | |
443 | struct { | |
444 | __le32 mode; | |
445 | __le32 rdev; | |
446 | } __attribute__ ((packed)) mknod; | |
447 | struct { | |
448 | __le32 mode; | |
449 | } __attribute__ ((packed)) mkdir; | |
450 | struct { | |
451 | __le32 flags; | |
452 | __le32 mode; | |
453 | __le32 stripe_unit; /* layout for newly created file */ | |
454 | __le32 stripe_count; /* ... */ | |
455 | __le32 object_size; | |
456 | __le32 pool; /* if >= 0 and CREATEPOOLID feature */ | |
457 | __le32 mask; /* CEPH_CAP_* */ | |
458 | __le64 old_size; /* if O_TRUNC */ | |
459 | } __attribute__ ((packed)) open; | |
460 | struct { | |
461 | __le32 flags; | |
462 | __le32 osdmap_epoch; /* use for set file/dir layout */ | |
463 | } __attribute__ ((packed)) setxattr; | |
464 | struct { | |
465 | struct ceph_file_layout layout; | |
466 | } __attribute__ ((packed)) setlayout; | |
467 | struct { | |
468 | __u8 rule; /* currently fcntl or flock */ | |
469 | __u8 type; /* shared, exclusive, remove*/ | |
470 | __le64 owner; /* who requests/holds the lock */ | |
471 | __le64 pid; /* process id requesting the lock */ | |
472 | __le64 start; /* initial location to lock */ | |
473 | __le64 length; /* num bytes to lock from start */ | |
474 | __u8 wait; /* will caller wait for lock to become available? */ | |
475 | } __attribute__ ((packed)) filelock_change; | |
476 | } __attribute__ ((packed)); | |
477 | ||
478 | #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ | |
479 | #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ | |
480 | ||
481 | struct ceph_mds_request_head_legacy { | |
482 | __le64 oldest_client_tid; | |
483 | __le32 mdsmap_epoch; /* on client */ | |
484 | __le32 flags; /* CEPH_MDS_FLAG_* */ | |
485 | __u8 num_retry, num_fwd; /* count retry, fwd attempts */ | |
486 | __le16 num_releases; /* # include cap/lease release records */ | |
487 | __le32 op; /* mds op code */ | |
488 | __le32 caller_uid, caller_gid; | |
489 | __le64 ino; /* use this ino for openc, mkdir, mknod, | |
490 | etc. (if replaying) */ | |
491 | union ceph_mds_request_args_legacy args; | |
492 | } __attribute__ ((packed)); | |
493 | ||
494 | /* | |
495 | * Note that this is embedded wthin ceph_mds_request_head. Also, compatability | |
496 | * with the ceph_mds_request_args_legacy must be maintained! | |
497 | */ | |
498 | union ceph_mds_request_args { | |
499 | struct { | |
500 | __le32 mask; /* CEPH_CAP_* */ | |
501 | } __attribute__ ((packed)) getattr; | |
502 | struct { | |
503 | __le32 mode; | |
504 | __le32 uid; | |
505 | __le32 gid; | |
506 | struct ceph_timespec mtime; | |
507 | struct ceph_timespec atime; | |
508 | __le64 size, old_size; /* old_size needed by truncate */ | |
509 | __le32 mask; /* CEPH_SETATTR_* */ | |
510 | struct ceph_timespec btime; | |
511 | } __attribute__ ((packed)) setattr; | |
512 | struct { | |
513 | __le32 frag; /* which dir fragment */ | |
514 | __le32 max_entries; /* how many dentries to grab */ | |
515 | __le32 max_bytes; | |
516 | __le16 flags; | |
517 | __le32 offset_hash; | |
518 | } __attribute__ ((packed)) readdir; | |
519 | struct { | |
520 | __le32 mode; | |
521 | __le32 rdev; | |
522 | } __attribute__ ((packed)) mknod; | |
523 | struct { | |
524 | __le32 mode; | |
525 | } __attribute__ ((packed)) mkdir; | |
526 | struct { | |
527 | __le32 flags; | |
528 | __le32 mode; | |
529 | __le32 stripe_unit; /* layout for newly created file */ | |
530 | __le32 stripe_count; /* ... */ | |
531 | __le32 object_size; | |
532 | __le32 pool; /* if >= 0 and CREATEPOOLID feature */ | |
533 | __le32 mask; /* CEPH_CAP_* */ | |
534 | __le64 old_size; /* if O_TRUNC */ | |
535 | } __attribute__ ((packed)) open; | |
536 | struct { | |
537 | __le32 flags; | |
538 | __le32 osdmap_epoch; /* use for set file/dir layout */ | |
539 | } __attribute__ ((packed)) setxattr; | |
540 | struct { | |
541 | struct ceph_file_layout layout; | |
542 | } __attribute__ ((packed)) setlayout; | |
543 | struct { | |
544 | __u8 rule; /* currently fcntl or flock */ | |
545 | __u8 type; /* shared, exclusive, remove*/ | |
546 | __le64 owner; /* who requests/holds the lock */ | |
547 | __le64 pid; /* process id requesting the lock */ | |
548 | __le64 start; /* initial location to lock */ | |
549 | __le64 length; /* num bytes to lock from start */ | |
550 | __u8 wait; /* will caller wait for lock to become available? */ | |
551 | } __attribute__ ((packed)) filelock_change; | |
552 | } __attribute__ ((packed)); | |
553 | ||
554 | #define CEPH_MDS_REQUEST_HEAD_VERSION 1 | |
555 | ||
556 | /* | |
557 | * Note that any change to this structure must ensure that it is compatible | |
558 | * with ceph_mds_request_head_legacy. | |
559 | */ | |
560 | struct ceph_mds_request_head { | |
561 | __le16 version; | |
562 | __le64 oldest_client_tid; | |
563 | __le32 mdsmap_epoch; /* on client */ | |
564 | __le32 flags; /* CEPH_MDS_FLAG_* */ | |
565 | __u8 num_retry, num_fwd; /* count retry, fwd attempts */ | |
566 | __le16 num_releases; /* # include cap/lease release records */ | |
567 | __le32 op; /* mds op code */ | |
568 | __le32 caller_uid, caller_gid; | |
569 | __le64 ino; /* use this ino for openc, mkdir, mknod, | |
570 | etc. (if replaying) */ | |
571 | union ceph_mds_request_args args; | |
572 | } __attribute__ ((packed)); | |
573 | ||
574 | /* cap/lease release record */ | |
575 | struct ceph_mds_request_release { | |
576 | __le64 ino, cap_id; /* ino and unique cap id */ | |
577 | __le32 caps, wanted; /* new issued, wanted */ | |
578 | __le32 seq, issue_seq, mseq; | |
579 | __le32 dname_seq; /* if releasing a dentry lease, a */ | |
580 | __le32 dname_len; /* string follows. */ | |
581 | } __attribute__ ((packed)); | |
582 | ||
583 | static inline void | |
584 | copy_from_legacy_head(struct ceph_mds_request_head *head, | |
585 | struct ceph_mds_request_head_legacy *legacy) | |
586 | { | |
587 | memcpy(&(head->oldest_client_tid), legacy, sizeof(*legacy)); | |
588 | } | |
589 | ||
590 | static inline void | |
591 | copy_to_legacy_head(struct ceph_mds_request_head_legacy *legacy, | |
592 | struct ceph_mds_request_head *head) | |
593 | { | |
594 | memcpy(legacy, &(head->oldest_client_tid), sizeof(*legacy)); | |
595 | } | |
596 | ||
597 | /* client reply */ | |
598 | struct ceph_mds_reply_head { | |
599 | __le32 op; | |
600 | __le32 result; | |
601 | __le32 mdsmap_epoch; | |
602 | __u8 safe; /* true if committed to disk */ | |
603 | __u8 is_dentry, is_target; /* true if dentry, target inode records | |
604 | are included with reply */ | |
605 | } __attribute__ ((packed)); | |
606 | ||
607 | /* one for each node split */ | |
608 | struct ceph_frag_tree_split { | |
609 | __le32 frag; /* this frag splits... */ | |
610 | __le32 by; /* ...by this many bits */ | |
611 | } __attribute__ ((packed)); | |
612 | ||
613 | struct ceph_frag_tree_head { | |
614 | __le32 nsplits; /* num ceph_frag_tree_split records */ | |
615 | struct ceph_frag_tree_split splits[]; | |
616 | } __attribute__ ((packed)); | |
617 | ||
618 | /* capability issue, for bundling with mds reply */ | |
619 | struct ceph_mds_reply_cap { | |
620 | __le32 caps, wanted; /* caps issued, wanted */ | |
621 | __le64 cap_id; | |
622 | __le32 seq, mseq; | |
623 | __le64 realm; /* snap realm */ | |
624 | __u8 flags; /* CEPH_CAP_FLAG_* */ | |
625 | } __attribute__ ((packed)); | |
626 | ||
627 | #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ | |
628 | #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* ask client to release the cap */ | |
629 | ||
630 | /* reply_lease follows dname, and reply_inode */ | |
631 | struct ceph_mds_reply_lease { | |
632 | __le16 mask; /* lease type(s) */ | |
633 | __le32 duration_ms; /* lease duration */ | |
634 | __le32 seq; | |
635 | } __attribute__ ((packed)); | |
636 | ||
637 | struct ceph_mds_reply_dirfrag { | |
638 | __le32 frag; /* fragment */ | |
639 | __le32 auth; /* auth mds, if this is a delegation point */ | |
640 | __le32 ndist; /* number of mds' this is replicated on */ | |
641 | __le32 dist[]; | |
642 | } __attribute__ ((packed)); | |
643 | ||
644 | #define CEPH_LOCK_FCNTL 1 | |
645 | #define CEPH_LOCK_FLOCK 2 | |
646 | #define CEPH_LOCK_FCNTL_INTR 3 | |
647 | #define CEPH_LOCK_FLOCK_INTR 4 | |
648 | ||
649 | #define CEPH_LOCK_SHARED 1 | |
650 | #define CEPH_LOCK_EXCL 2 | |
651 | #define CEPH_LOCK_UNLOCK 4 | |
652 | ||
653 | struct ceph_filelock { | |
654 | __le64 start;/* file offset to start lock at */ | |
655 | __le64 length; /* num bytes to lock; 0 for all following start */ | |
656 | __le64 client; /* which client holds the lock */ | |
657 | __le64 owner; /* who requests/holds the lock */ | |
658 | __le64 pid; /* process id holding the lock on the client */ | |
659 | __u8 type; /* shared lock, exclusive lock, or unlock */ | |
660 | } __attribute__ ((packed)); | |
661 | ||
662 | ||
663 | /* file access modes */ | |
664 | #define CEPH_FILE_MODE_PIN 0 | |
665 | #define CEPH_FILE_MODE_RD 1 | |
666 | #define CEPH_FILE_MODE_WR 2 | |
667 | #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ | |
668 | #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ | |
669 | #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ | |
670 | ||
671 | int ceph_flags_to_mode(int flags); | |
672 | ||
673 | /* inline data state */ | |
674 | #define CEPH_INLINE_NONE ((__u64)-1) | |
675 | #define CEPH_INLINE_MAX_SIZE CEPH_MIN_STRIPE_UNIT | |
676 | ||
677 | /* capability bits */ | |
678 | #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ | |
679 | ||
680 | /* generic cap bits */ | |
681 | #define CEPH_CAP_GSHARED 1 /* client can reads */ | |
682 | #define CEPH_CAP_GEXCL 2 /* client can read and update */ | |
683 | #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ | |
684 | #define CEPH_CAP_GRD 8 /* (file) client can read */ | |
685 | #define CEPH_CAP_GWR 16 /* (file) client can write */ | |
686 | #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ | |
687 | #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ | |
688 | #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ | |
689 | ||
690 | #define CEPH_CAP_SIMPLE_BITS 2 | |
691 | #define CEPH_CAP_FILE_BITS 8 | |
692 | ||
693 | /* per-lock shift */ | |
694 | #define CEPH_CAP_SAUTH 2 | |
695 | #define CEPH_CAP_SLINK 4 | |
696 | #define CEPH_CAP_SXATTR 6 | |
697 | #define CEPH_CAP_SFILE 8 | |
698 | ||
699 | /* composed values */ | |
700 | #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) | |
701 | #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) | |
702 | #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) | |
703 | #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) | |
704 | #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) | |
705 | #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) | |
706 | #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) | |
707 | #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) | |
708 | #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) | |
709 | #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) | |
710 | #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) | |
711 | #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) | |
712 | #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) | |
713 | #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) | |
714 | #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) | |
715 | ||
716 | /* cap masks (for getattr) */ | |
717 | #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN | |
718 | #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ | |
719 | #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN | |
720 | #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED | |
721 | #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED | |
722 | #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED | |
723 | #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED | |
724 | #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED | |
725 | #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED | |
726 | #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED | |
727 | #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ | |
728 | #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED | |
729 | #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ | |
730 | CEPH_CAP_AUTH_SHARED | \ | |
731 | CEPH_CAP_LINK_SHARED | \ | |
732 | CEPH_CAP_FILE_SHARED | \ | |
733 | CEPH_CAP_XATTR_SHARED) | |
734 | #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ | |
735 | CEPH_CAP_FILE_RD) | |
736 | ||
737 | #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ | |
738 | CEPH_CAP_LINK_SHARED | \ | |
739 | CEPH_CAP_XATTR_SHARED | \ | |
740 | CEPH_CAP_FILE_SHARED) | |
741 | #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ | |
742 | CEPH_CAP_FILE_CACHE) | |
743 | ||
744 | #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ | |
745 | CEPH_CAP_LINK_EXCL | \ | |
746 | CEPH_CAP_XATTR_EXCL | \ | |
747 | CEPH_CAP_FILE_EXCL) | |
748 | #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ | |
749 | CEPH_CAP_FILE_EXCL) | |
750 | #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) | |
751 | #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ | |
752 | CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ | |
753 | CEPH_CAP_PIN) | |
754 | ||
755 | #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ | |
756 | CEPH_LOCK_IXATTR) | |
757 | ||
758 | int ceph_caps_for_mode(int mode); | |
759 | ||
760 | enum { | |
761 | CEPH_CAP_OP_GRANT, /* mds->client grant */ | |
762 | CEPH_CAP_OP_REVOKE, /* mds->client revoke */ | |
763 | CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ | |
764 | CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ | |
765 | CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ | |
766 | CEPH_CAP_OP_UPDATE, /* client->mds update */ | |
767 | CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ | |
768 | CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ | |
769 | CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ | |
770 | CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ | |
771 | CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ | |
772 | CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ | |
773 | CEPH_CAP_OP_RENEW, /* client->mds renewal request */ | |
774 | }; | |
775 | ||
776 | extern const char *ceph_cap_op_name(int op); | |
777 | ||
778 | /* extra info for cap import/export */ | |
779 | struct ceph_mds_cap_peer { | |
780 | __le64 cap_id; | |
781 | __le32 seq; | |
782 | __le32 mseq; | |
783 | __le32 mds; | |
784 | __u8 flags; | |
785 | } __attribute__ ((packed)); | |
786 | ||
787 | /* | |
788 | * caps message, used for capability callbacks, acks, requests, etc. | |
789 | */ | |
790 | struct ceph_mds_caps_head { | |
791 | __le32 op; /* CEPH_CAP_OP_* */ | |
792 | __le64 ino, realm; | |
793 | __le64 cap_id; | |
794 | __le32 seq, issue_seq; | |
795 | __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ | |
796 | __le32 migrate_seq; | |
797 | __le64 snap_follows; | |
798 | __le32 snap_trace_len; | |
799 | ||
800 | /* authlock */ | |
801 | __le32 uid, gid, mode; | |
802 | ||
803 | /* linklock */ | |
804 | __le32 nlink; | |
805 | ||
806 | /* xattrlock */ | |
807 | __le32 xattr_len; | |
808 | __le64 xattr_version; | |
809 | } __attribute__ ((packed)); | |
810 | ||
811 | struct ceph_mds_caps_body_legacy { | |
812 | union { | |
813 | /* all except export */ | |
814 | struct { | |
815 | /* filelock */ | |
816 | __le64 size, max_size, truncate_size; | |
817 | __le32 truncate_seq; | |
818 | struct ceph_timespec mtime, atime, ctime; | |
819 | struct ceph_file_layout layout; | |
820 | __le32 time_warp_seq; | |
821 | }; | |
822 | /* export message */ | |
823 | struct ceph_mds_cap_peer peer; | |
824 | }; | |
825 | } __attribute__ ((packed)); | |
826 | ||
827 | /* cap release msg head */ | |
828 | struct ceph_mds_cap_release { | |
829 | __le32 num; /* number of cap_items that follow */ | |
830 | } __attribute__ ((packed)); | |
831 | ||
832 | struct ceph_mds_cap_item { | |
833 | __le64 ino; | |
834 | __le64 cap_id; | |
835 | __le32 migrate_seq, seq; | |
836 | } __attribute__ ((packed)); | |
837 | ||
838 | #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ | |
839 | #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ | |
840 | #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ | |
841 | #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ | |
842 | ||
843 | extern const char *ceph_lease_op_name(int o); | |
844 | ||
845 | /* lease msg header */ | |
846 | struct ceph_mds_lease { | |
847 | __u8 action; /* CEPH_MDS_LEASE_* */ | |
848 | __le16 mask; /* which lease */ | |
849 | __le64 ino; | |
850 | __le64 first, last; /* snap range */ | |
851 | __le32 seq; | |
852 | __le32 duration_ms; /* duration of renewal */ | |
853 | } __attribute__ ((packed)); | |
854 | /* followed by a __le32+string for dname */ | |
855 | ||
856 | /* client reconnect */ | |
857 | struct ceph_mds_cap_reconnect { | |
858 | __le64 cap_id; | |
859 | __le32 wanted; | |
860 | __le32 issued; | |
861 | __le64 snaprealm; | |
862 | __le64 pathbase; /* base ino for our path to this ino */ | |
863 | __le32 flock_len; /* size of flock state blob, if any */ | |
864 | } __attribute__ ((packed)); | |
865 | /* followed by flock blob */ | |
866 | ||
867 | struct ceph_mds_cap_reconnect_v1 { | |
868 | __le64 cap_id; | |
869 | __le32 wanted; | |
870 | __le32 issued; | |
871 | __le64 size; | |
872 | struct ceph_timespec mtime, atime; | |
873 | __le64 snaprealm; | |
874 | __le64 pathbase; /* base ino for our path to this ino */ | |
875 | } __attribute__ ((packed)); | |
876 | ||
877 | struct ceph_mds_snaprealm_reconnect { | |
878 | __le64 ino; /* snap realm base */ | |
879 | __le64 seq; /* snap seq for this snap realm */ | |
880 | __le64 parent; /* parent realm */ | |
881 | } __attribute__ ((packed)); | |
882 | ||
883 | /* | |
884 | * snaps | |
885 | */ | |
886 | enum { | |
887 | CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ | |
888 | CEPH_SNAP_OP_CREATE, | |
889 | CEPH_SNAP_OP_DESTROY, | |
890 | CEPH_SNAP_OP_SPLIT, | |
891 | }; | |
892 | ||
893 | extern const char *ceph_snap_op_name(int o); | |
894 | ||
895 | /* snap msg header */ | |
896 | struct ceph_mds_snap_head { | |
897 | __le32 op; /* CEPH_SNAP_OP_* */ | |
898 | __le64 split; /* ino to split off, if any */ | |
899 | __le32 num_split_inos; /* # inos belonging to new child realm */ | |
900 | __le32 num_split_realms; /* # child realms udner new child realm */ | |
901 | __le32 trace_len; /* size of snap trace blob */ | |
902 | } __attribute__ ((packed)); | |
903 | /* followed by split ino list, then split realms, then the trace blob */ | |
904 | ||
905 | /* | |
906 | * encode info about a snaprealm, as viewed by a client | |
907 | */ | |
908 | struct ceph_mds_snap_realm { | |
909 | __le64 ino; /* ino */ | |
910 | __le64 created; /* snap: when created */ | |
911 | __le64 parent; /* ino: parent realm */ | |
912 | __le64 parent_since; /* snap: same parent since */ | |
913 | __le64 seq; /* snap: version */ | |
914 | __le32 num_snaps; | |
915 | __le32 num_prior_parent_snaps; | |
916 | } __attribute__ ((packed)); | |
917 | /* followed by my snap list, then prior parent snap list */ | |
918 | ||
919 | #endif |