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 <linux/ceph/msgr.h> 16 #include <linux/ceph/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_DOTDOT 3 /* used by ceph fuse for parent (..) */ 32 33 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */ 34 #define CEPH_MAX_MON 31 35 36 /* 37 * legacy ceph_file_layoute 38 */ 39 struct ceph_file_layout_legacy { 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 struct ceph_string; 57 /* 58 * ceph_file_layout - describe data layout for a file/inode 59 */ 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 */ 67 }; 68 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); 74 75 #define CEPH_MIN_STRIPE_UNIT 65536 76 77 struct ceph_dir_layout { 78 __u8 dl_dir_hash; /* see ceph_hash.h for ids */ 79 __u8 dl_unused1; 80 __u16 dl_unused2; 81 __u32 dl_unused3; 82 } __attribute__ ((packed)); 83 84 /* crypto algorithms */ 85 #define CEPH_CRYPTO_NONE 0x0 86 #define CEPH_CRYPTO_AES 0x1 87 88 #define CEPH_AES_IV "cephsageyudagreg" 89 90 /* security/authentication protocols */ 91 #define CEPH_AUTH_UNKNOWN 0x0 92 #define CEPH_AUTH_NONE 0x1 93 #define CEPH_AUTH_CEPHX 0x2 94 95 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1) 96 97 98 /********************************************* 99 * message layer 100 */ 101 102 /* 103 * message types 104 */ 105 106 /* misc */ 107 #define CEPH_MSG_SHUTDOWN 1 108 #define CEPH_MSG_PING 2 109 110 /* 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 20 121 122 /* client <-> mds */ 123 #define CEPH_MSG_MDS_MAP 21 124 #define CEPH_MSG_FS_MAP_USER 103 125 126 #define CEPH_MSG_CLIENT_SESSION 22 127 #define CEPH_MSG_CLIENT_RECONNECT 23 128 129 #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 136 137 /* pool ops */ 138 #define CEPH_MSG_POOLOP_REPLY 48 139 #define CEPH_MSG_POOLOP 49 140 141 /* mon commands */ 142 #define CEPH_MSG_MON_COMMAND 50 143 #define CEPH_MSG_MON_COMMAND_ACK 51 144 145 /* osd */ 146 #define CEPH_MSG_OSD_MAP 41 147 #define CEPH_MSG_OSD_OP 42 148 #define CEPH_MSG_OSD_OPREPLY 43 149 #define CEPH_MSG_WATCH_NOTIFY 44 150 151 152 /* watch-notify operations */ 153 enum { 154 CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */ 155 CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */ 156 CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */ 157 }; 158 159 160 struct ceph_mon_request_header { 161 __le64 have_version; 162 __le16 session_mon; 163 __le64 session_mon_tid; 164 } __attribute__ ((packed)); 165 166 struct ceph_mon_statfs { 167 struct ceph_mon_request_header monhdr; 168 struct ceph_fsid fsid; 169 } __attribute__ ((packed)); 170 171 struct ceph_statfs { 172 __le64 kb, kb_used, kb_avail; 173 __le64 num_objects; 174 } __attribute__ ((packed)); 175 176 struct ceph_mon_statfs_reply { 177 struct ceph_fsid fsid; 178 __le64 version; 179 struct ceph_statfs st; 180 } __attribute__ ((packed)); 181 182 struct ceph_mon_command { 183 struct ceph_mon_request_header monhdr; 184 struct ceph_fsid fsid; 185 __le32 num_strs; /* always 1 */ 186 __le32 str_len; 187 char str[]; 188 } __attribute__ ((packed)); 189 190 struct ceph_osd_getmap { 191 struct ceph_mon_request_header monhdr; 192 struct ceph_fsid fsid; 193 __le32 start; 194 } __attribute__ ((packed)); 195 196 struct ceph_mds_getmap { 197 struct ceph_mon_request_header monhdr; 198 struct ceph_fsid fsid; 199 } __attribute__ ((packed)); 200 201 struct ceph_client_mount { 202 struct ceph_mon_request_header monhdr; 203 } __attribute__ ((packed)); 204 205 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ 206 207 struct ceph_mon_subscribe_item { 208 __le64 start; 209 __u8 flags; 210 } __attribute__ ((packed)); 211 212 struct ceph_mon_subscribe_ack { 213 __le32 duration; /* seconds */ 214 struct ceph_fsid fsid; 215 } __attribute__ ((packed)); 216 217 #define CEPH_FS_CLUSTER_ID_NONE -1 218 219 /* 220 * mdsmap flags 221 */ 222 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ 223 224 /* 225 * mds states 226 * > 0 -> in 227 * <= 0 -> out 228 */ 229 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 230 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 231 empty log. */ 232 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 233 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 234 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 235 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 236 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 237 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */ 238 239 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ 240 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed 241 operations (import, rename, etc.) */ 242 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ 243 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ 244 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ 245 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ 246 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ 247 248 extern const char *ceph_mds_state_name(int s); 249 250 251 /* 252 * metadata lock types. 253 * - these are bitmasks.. we can compose them 254 * - they also define the lock ordering by the MDS 255 * - a few of these are internal to the mds 256 */ 257 #define CEPH_LOCK_DVERSION 1 258 #define CEPH_LOCK_DN 2 259 #define CEPH_LOCK_ISNAP 16 260 #define CEPH_LOCK_IVERSION 32 /* mds internal */ 261 #define CEPH_LOCK_IFILE 64 262 #define CEPH_LOCK_IAUTH 128 263 #define CEPH_LOCK_ILINK 256 264 #define CEPH_LOCK_IDFT 512 /* dir frag tree */ 265 #define CEPH_LOCK_INEST 1024 /* mds internal */ 266 #define CEPH_LOCK_IXATTR 2048 267 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ 268 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ 269 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ 270 271 /* client_session ops */ 272 enum { 273 CEPH_SESSION_REQUEST_OPEN, 274 CEPH_SESSION_OPEN, 275 CEPH_SESSION_REQUEST_CLOSE, 276 CEPH_SESSION_CLOSE, 277 CEPH_SESSION_REQUEST_RENEWCAPS, 278 CEPH_SESSION_RENEWCAPS, 279 CEPH_SESSION_STALE, 280 CEPH_SESSION_RECALL_STATE, 281 CEPH_SESSION_FLUSHMSG, 282 CEPH_SESSION_FLUSHMSG_ACK, 283 CEPH_SESSION_FORCE_RO, 284 CEPH_SESSION_REJECT, 285 }; 286 287 extern const char *ceph_session_op_name(int op); 288 289 struct ceph_mds_session_head { 290 __le32 op; 291 __le64 seq; 292 struct ceph_timespec stamp; 293 __le32 max_caps, max_leases; 294 } __attribute__ ((packed)); 295 296 /* client_request */ 297 /* 298 * metadata ops. 299 * & 0x001000 -> write op 300 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 301 & & 0x100000 -> use weird ino/path trace 302 */ 303 #define CEPH_MDS_OP_WRITE 0x001000 304 enum { 305 CEPH_MDS_OP_LOOKUP = 0x00100, 306 CEPH_MDS_OP_GETATTR = 0x00101, 307 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 308 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 309 CEPH_MDS_OP_LOOKUPINO = 0x00104, 310 CEPH_MDS_OP_LOOKUPNAME = 0x00105, 311 312 CEPH_MDS_OP_SETXATTR = 0x01105, 313 CEPH_MDS_OP_RMXATTR = 0x01106, 314 CEPH_MDS_OP_SETLAYOUT = 0x01107, 315 CEPH_MDS_OP_SETATTR = 0x01108, 316 CEPH_MDS_OP_SETFILELOCK= 0x01109, 317 CEPH_MDS_OP_GETFILELOCK= 0x00110, 318 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 319 320 CEPH_MDS_OP_MKNOD = 0x01201, 321 CEPH_MDS_OP_LINK = 0x01202, 322 CEPH_MDS_OP_UNLINK = 0x01203, 323 CEPH_MDS_OP_RENAME = 0x01204, 324 CEPH_MDS_OP_MKDIR = 0x01220, 325 CEPH_MDS_OP_RMDIR = 0x01221, 326 CEPH_MDS_OP_SYMLINK = 0x01222, 327 328 CEPH_MDS_OP_CREATE = 0x01301, 329 CEPH_MDS_OP_OPEN = 0x00302, 330 CEPH_MDS_OP_READDIR = 0x00305, 331 332 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 333 CEPH_MDS_OP_MKSNAP = 0x01400, 334 CEPH_MDS_OP_RMSNAP = 0x01401, 335 CEPH_MDS_OP_LSSNAP = 0x00402, 336 CEPH_MDS_OP_RENAMESNAP = 0x01403, 337 }; 338 339 extern const char *ceph_mds_op_name(int op); 340 341 342 #define CEPH_SETATTR_MODE 1 343 #define CEPH_SETATTR_UID 2 344 #define CEPH_SETATTR_GID 4 345 #define CEPH_SETATTR_MTIME 8 346 #define CEPH_SETATTR_ATIME 16 347 #define CEPH_SETATTR_SIZE 32 348 #define CEPH_SETATTR_CTIME 64 349 350 /* 351 * Ceph setxattr request flags. 352 */ 353 #define CEPH_XATTR_CREATE (1 << 0) 354 #define CEPH_XATTR_REPLACE (1 << 1) 355 #define CEPH_XATTR_REMOVE (1 << 31) 356 357 /* 358 * readdir request flags; 359 */ 360 #define CEPH_READDIR_REPLY_BITFLAGS (1<<0) 361 362 /* 363 * readdir reply flags. 364 */ 365 #define CEPH_READDIR_FRAG_END (1<<0) 366 #define CEPH_READDIR_FRAG_COMPLETE (1<<8) 367 #define CEPH_READDIR_HASH_ORDER (1<<9) 368 369 union ceph_mds_request_args { 370 struct { 371 __le32 mask; /* CEPH_CAP_* */ 372 } __attribute__ ((packed)) getattr; 373 struct { 374 __le32 mode; 375 __le32 uid; 376 __le32 gid; 377 struct ceph_timespec mtime; 378 struct ceph_timespec atime; 379 __le64 size, old_size; /* old_size needed by truncate */ 380 __le32 mask; /* CEPH_SETATTR_* */ 381 } __attribute__ ((packed)) setattr; 382 struct { 383 __le32 frag; /* which dir fragment */ 384 __le32 max_entries; /* how many dentries to grab */ 385 __le32 max_bytes; 386 __le16 flags; 387 } __attribute__ ((packed)) readdir; 388 struct { 389 __le32 mode; 390 __le32 rdev; 391 } __attribute__ ((packed)) mknod; 392 struct { 393 __le32 mode; 394 } __attribute__ ((packed)) mkdir; 395 struct { 396 __le32 flags; 397 __le32 mode; 398 __le32 stripe_unit; /* layout for newly created file */ 399 __le32 stripe_count; /* ... */ 400 __le32 object_size; 401 __le32 file_replication; 402 __le32 mask; /* CEPH_CAP_* */ 403 __le32 old_size; 404 } __attribute__ ((packed)) open; 405 struct { 406 __le32 flags; 407 } __attribute__ ((packed)) setxattr; 408 struct { 409 struct ceph_file_layout_legacy layout; 410 } __attribute__ ((packed)) setlayout; 411 struct { 412 __u8 rule; /* currently fcntl or flock */ 413 __u8 type; /* shared, exclusive, remove*/ 414 __le64 owner; /* owner of the lock */ 415 __le64 pid; /* process id requesting the lock */ 416 __le64 start; /* initial location to lock */ 417 __le64 length; /* num bytes to lock from start */ 418 __u8 wait; /* will caller wait for lock to become available? */ 419 } __attribute__ ((packed)) filelock_change; 420 } __attribute__ ((packed)); 421 422 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 423 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 424 425 struct ceph_mds_request_head { 426 __le64 oldest_client_tid; 427 __le32 mdsmap_epoch; /* on client */ 428 __le32 flags; /* CEPH_MDS_FLAG_* */ 429 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 430 __le16 num_releases; /* # include cap/lease release records */ 431 __le32 op; /* mds op code */ 432 __le32 caller_uid, caller_gid; 433 __le64 ino; /* use this ino for openc, mkdir, mknod, 434 etc. (if replaying) */ 435 union ceph_mds_request_args args; 436 } __attribute__ ((packed)); 437 438 /* cap/lease release record */ 439 struct ceph_mds_request_release { 440 __le64 ino, cap_id; /* ino and unique cap id */ 441 __le32 caps, wanted; /* new issued, wanted */ 442 __le32 seq, issue_seq, mseq; 443 __le32 dname_seq; /* if releasing a dentry lease, a */ 444 __le32 dname_len; /* string follows. */ 445 } __attribute__ ((packed)); 446 447 /* client reply */ 448 struct ceph_mds_reply_head { 449 __le32 op; 450 __le32 result; 451 __le32 mdsmap_epoch; 452 __u8 safe; /* true if committed to disk */ 453 __u8 is_dentry, is_target; /* true if dentry, target inode records 454 are included with reply */ 455 } __attribute__ ((packed)); 456 457 /* one for each node split */ 458 struct ceph_frag_tree_split { 459 __le32 frag; /* this frag splits... */ 460 __le32 by; /* ...by this many bits */ 461 } __attribute__ ((packed)); 462 463 struct ceph_frag_tree_head { 464 __le32 nsplits; /* num ceph_frag_tree_split records */ 465 struct ceph_frag_tree_split splits[]; 466 } __attribute__ ((packed)); 467 468 /* capability issue, for bundling with mds reply */ 469 struct ceph_mds_reply_cap { 470 __le32 caps, wanted; /* caps issued, wanted */ 471 __le64 cap_id; 472 __le32 seq, mseq; 473 __le64 realm; /* snap realm */ 474 __u8 flags; /* CEPH_CAP_FLAG_* */ 475 } __attribute__ ((packed)); 476 477 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 478 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 479 480 /* inode record, for bundling with mds reply */ 481 struct ceph_mds_reply_inode { 482 __le64 ino; 483 __le64 snapid; 484 __le32 rdev; 485 __le64 version; /* inode version */ 486 __le64 xattr_version; /* version for xattr blob */ 487 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 488 struct ceph_file_layout_legacy layout; 489 struct ceph_timespec ctime, mtime, atime; 490 __le32 time_warp_seq; 491 __le64 size, max_size, truncate_size; 492 __le32 truncate_seq; 493 __le32 mode, uid, gid; 494 __le32 nlink; 495 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 496 struct ceph_timespec rctime; 497 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 498 } __attribute__ ((packed)); 499 /* followed by frag array, symlink string, dir layout, xattr blob */ 500 501 /* reply_lease follows dname, and reply_inode */ 502 struct ceph_mds_reply_lease { 503 __le16 mask; /* lease type(s) */ 504 __le32 duration_ms; /* lease duration */ 505 __le32 seq; 506 } __attribute__ ((packed)); 507 508 struct ceph_mds_reply_dirfrag { 509 __le32 frag; /* fragment */ 510 __le32 auth; /* auth mds, if this is a delegation point */ 511 __le32 ndist; /* number of mds' this is replicated on */ 512 __le32 dist[]; 513 } __attribute__ ((packed)); 514 515 #define CEPH_LOCK_FCNTL 1 516 #define CEPH_LOCK_FLOCK 2 517 #define CEPH_LOCK_FCNTL_INTR 3 518 #define CEPH_LOCK_FLOCK_INTR 4 519 520 521 #define CEPH_LOCK_SHARED 1 522 #define CEPH_LOCK_EXCL 2 523 #define CEPH_LOCK_UNLOCK 4 524 525 struct ceph_filelock { 526 __le64 start;/* file offset to start lock at */ 527 __le64 length; /* num bytes to lock; 0 for all following start */ 528 __le64 client; /* which client holds the lock */ 529 __le64 owner; /* owner the lock */ 530 __le64 pid; /* process id holding the lock on the client */ 531 __u8 type; /* shared lock, exclusive lock, or unlock */ 532 } __attribute__ ((packed)); 533 534 535 /* file access modes */ 536 #define CEPH_FILE_MODE_PIN 0 537 #define CEPH_FILE_MODE_RD 1 538 #define CEPH_FILE_MODE_WR 2 539 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 540 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 541 #define CEPH_FILE_MODE_BITS 4 542 543 int ceph_flags_to_mode(int flags); 544 545 #define CEPH_INLINE_NONE ((__u64)-1) 546 547 /* capability bits */ 548 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 549 550 /* generic cap bits */ 551 #define CEPH_CAP_GSHARED 1 /* client can reads */ 552 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 553 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 554 #define CEPH_CAP_GRD 8 /* (file) client can read */ 555 #define CEPH_CAP_GWR 16 /* (file) client can write */ 556 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 557 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 558 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 559 560 #define CEPH_CAP_SIMPLE_BITS 2 561 #define CEPH_CAP_FILE_BITS 8 562 563 /* per-lock shift */ 564 #define CEPH_CAP_SAUTH 2 565 #define CEPH_CAP_SLINK 4 566 #define CEPH_CAP_SXATTR 6 567 #define CEPH_CAP_SFILE 8 568 #define CEPH_CAP_SFLOCK 20 569 570 #define CEPH_CAP_BITS 22 571 572 /* composed values */ 573 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 574 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 575 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 576 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 577 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 578 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 579 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 580 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 581 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 582 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 583 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 584 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 585 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 586 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 587 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 588 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 589 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 590 591 592 /* cap masks (for getattr) */ 593 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 594 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 595 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 596 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 597 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 598 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 599 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 600 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 601 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 602 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 603 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 604 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 605 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 606 CEPH_CAP_AUTH_SHARED | \ 607 CEPH_CAP_LINK_SHARED | \ 608 CEPH_CAP_FILE_SHARED | \ 609 CEPH_CAP_XATTR_SHARED) 610 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 611 CEPH_CAP_FILE_RD) 612 613 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 614 CEPH_CAP_LINK_SHARED | \ 615 CEPH_CAP_XATTR_SHARED | \ 616 CEPH_CAP_FILE_SHARED) 617 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 618 CEPH_CAP_FILE_CACHE) 619 620 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 621 CEPH_CAP_LINK_EXCL | \ 622 CEPH_CAP_XATTR_EXCL | \ 623 CEPH_CAP_FILE_EXCL) 624 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 625 CEPH_CAP_FILE_SHARED) 626 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 627 CEPH_CAP_FILE_EXCL) 628 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 629 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 630 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 631 CEPH_CAP_PIN) 632 633 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 634 CEPH_LOCK_IXATTR) 635 636 int ceph_caps_for_mode(int mode); 637 638 enum { 639 CEPH_CAP_OP_GRANT, /* mds->client grant */ 640 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 641 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 642 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 643 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 644 CEPH_CAP_OP_UPDATE, /* client->mds update */ 645 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 646 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 647 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 648 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 649 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 650 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 651 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 652 }; 653 654 extern const char *ceph_cap_op_name(int op); 655 656 /* 657 * caps message, used for capability callbacks, acks, requests, etc. 658 */ 659 struct ceph_mds_caps { 660 __le32 op; /* CEPH_CAP_OP_* */ 661 __le64 ino, realm; 662 __le64 cap_id; 663 __le32 seq, issue_seq; 664 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 665 __le32 migrate_seq; 666 __le64 snap_follows; 667 __le32 snap_trace_len; 668 669 /* authlock */ 670 __le32 uid, gid, mode; 671 672 /* linklock */ 673 __le32 nlink; 674 675 /* xattrlock */ 676 __le32 xattr_len; 677 __le64 xattr_version; 678 679 /* filelock */ 680 __le64 size, max_size, truncate_size; 681 __le32 truncate_seq; 682 struct ceph_timespec mtime, atime, ctime; 683 struct ceph_file_layout_legacy layout; 684 __le32 time_warp_seq; 685 } __attribute__ ((packed)); 686 687 struct ceph_mds_cap_peer { 688 __le64 cap_id; 689 __le32 seq; 690 __le32 mseq; 691 __le32 mds; 692 __u8 flags; 693 } __attribute__ ((packed)); 694 695 /* cap release msg head */ 696 struct ceph_mds_cap_release { 697 __le32 num; /* number of cap_items that follow */ 698 } __attribute__ ((packed)); 699 700 struct ceph_mds_cap_item { 701 __le64 ino; 702 __le64 cap_id; 703 __le32 migrate_seq, seq; 704 } __attribute__ ((packed)); 705 706 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 707 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 708 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 709 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 710 711 extern const char *ceph_lease_op_name(int o); 712 713 /* lease msg header */ 714 struct ceph_mds_lease { 715 __u8 action; /* CEPH_MDS_LEASE_* */ 716 __le16 mask; /* which lease */ 717 __le64 ino; 718 __le64 first, last; /* snap range */ 719 __le32 seq; 720 __le32 duration_ms; /* duration of renewal */ 721 } __attribute__ ((packed)); 722 /* followed by a __le32+string for dname */ 723 724 /* client reconnect */ 725 struct ceph_mds_cap_reconnect { 726 __le64 cap_id; 727 __le32 wanted; 728 __le32 issued; 729 __le64 snaprealm; 730 __le64 pathbase; /* base ino for our path to this ino */ 731 __le32 flock_len; /* size of flock state blob, if any */ 732 } __attribute__ ((packed)); 733 /* followed by flock blob */ 734 735 struct ceph_mds_cap_reconnect_v1 { 736 __le64 cap_id; 737 __le32 wanted; 738 __le32 issued; 739 __le64 size; 740 struct ceph_timespec mtime, atime; 741 __le64 snaprealm; 742 __le64 pathbase; /* base ino for our path to this ino */ 743 } __attribute__ ((packed)); 744 745 struct ceph_mds_snaprealm_reconnect { 746 __le64 ino; /* snap realm base */ 747 __le64 seq; /* snap seq for this snap realm */ 748 __le64 parent; /* parent realm */ 749 } __attribute__ ((packed)); 750 751 /* 752 * snaps 753 */ 754 enum { 755 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 756 CEPH_SNAP_OP_CREATE, 757 CEPH_SNAP_OP_DESTROY, 758 CEPH_SNAP_OP_SPLIT, 759 }; 760 761 extern const char *ceph_snap_op_name(int o); 762 763 /* snap msg header */ 764 struct ceph_mds_snap_head { 765 __le32 op; /* CEPH_SNAP_OP_* */ 766 __le64 split; /* ino to split off, if any */ 767 __le32 num_split_inos; /* # inos belonging to new child realm */ 768 __le32 num_split_realms; /* # child realms udner new child realm */ 769 __le32 trace_len; /* size of snap trace blob */ 770 } __attribute__ ((packed)); 771 /* followed by split ino list, then split realms, then the trace blob */ 772 773 /* 774 * encode info about a snaprealm, as viewed by a client 775 */ 776 struct ceph_mds_snap_realm { 777 __le64 ino; /* ino */ 778 __le64 created; /* snap: when created */ 779 __le64 parent; /* ino: parent realm */ 780 __le64 parent_since; /* snap: same parent since */ 781 __le64 seq; /* snap: version */ 782 __le32 num_snaps; 783 __le32 num_prior_parent_snaps; 784 } __attribute__ ((packed)); 785 /* followed by my snap list, then prior parent snap list */ 786 787 #endif 788