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 #define CEPH_MSG_OSD_BACKOFF 61 151 152 153 /* watch-notify operations */ 154 enum { 155 CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */ 156 CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */ 157 CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */ 158 }; 159 160 161 struct ceph_mon_request_header { 162 __le64 have_version; 163 __le16 session_mon; 164 __le64 session_mon_tid; 165 } __attribute__ ((packed)); 166 167 struct ceph_mon_statfs { 168 struct ceph_mon_request_header monhdr; 169 struct ceph_fsid fsid; 170 } __attribute__ ((packed)); 171 172 struct ceph_statfs { 173 __le64 kb, kb_used, kb_avail; 174 __le64 num_objects; 175 } __attribute__ ((packed)); 176 177 struct ceph_mon_statfs_reply { 178 struct ceph_fsid fsid; 179 __le64 version; 180 struct ceph_statfs st; 181 } __attribute__ ((packed)); 182 183 struct ceph_mon_command { 184 struct ceph_mon_request_header monhdr; 185 struct ceph_fsid fsid; 186 __le32 num_strs; /* always 1 */ 187 __le32 str_len; 188 char str[]; 189 } __attribute__ ((packed)); 190 191 struct ceph_osd_getmap { 192 struct ceph_mon_request_header monhdr; 193 struct ceph_fsid fsid; 194 __le32 start; 195 } __attribute__ ((packed)); 196 197 struct ceph_mds_getmap { 198 struct ceph_mon_request_header monhdr; 199 struct ceph_fsid fsid; 200 } __attribute__ ((packed)); 201 202 struct ceph_client_mount { 203 struct ceph_mon_request_header monhdr; 204 } __attribute__ ((packed)); 205 206 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ 207 208 struct ceph_mon_subscribe_item { 209 __le64 start; 210 __u8 flags; 211 } __attribute__ ((packed)); 212 213 struct ceph_mon_subscribe_ack { 214 __le32 duration; /* seconds */ 215 struct ceph_fsid fsid; 216 } __attribute__ ((packed)); 217 218 #define CEPH_FS_CLUSTER_ID_NONE -1 219 220 /* 221 * mdsmap flags 222 */ 223 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ 224 225 /* 226 * mds states 227 * > 0 -> in 228 * <= 0 -> out 229 */ 230 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 231 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 232 empty log. */ 233 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 234 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 235 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 236 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 237 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 238 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */ 239 240 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ 241 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed 242 operations (import, rename, etc.) */ 243 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ 244 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ 245 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ 246 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ 247 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ 248 249 extern const char *ceph_mds_state_name(int s); 250 251 252 /* 253 * metadata lock types. 254 * - these are bitmasks.. we can compose them 255 * - they also define the lock ordering by the MDS 256 * - a few of these are internal to the mds 257 */ 258 #define CEPH_LOCK_DVERSION 1 259 #define CEPH_LOCK_DN 2 260 #define CEPH_LOCK_ISNAP 16 261 #define CEPH_LOCK_IVERSION 32 /* mds internal */ 262 #define CEPH_LOCK_IFILE 64 263 #define CEPH_LOCK_IAUTH 128 264 #define CEPH_LOCK_ILINK 256 265 #define CEPH_LOCK_IDFT 512 /* dir frag tree */ 266 #define CEPH_LOCK_INEST 1024 /* mds internal */ 267 #define CEPH_LOCK_IXATTR 2048 268 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ 269 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ 270 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ 271 272 /* client_session ops */ 273 enum { 274 CEPH_SESSION_REQUEST_OPEN, 275 CEPH_SESSION_OPEN, 276 CEPH_SESSION_REQUEST_CLOSE, 277 CEPH_SESSION_CLOSE, 278 CEPH_SESSION_REQUEST_RENEWCAPS, 279 CEPH_SESSION_RENEWCAPS, 280 CEPH_SESSION_STALE, 281 CEPH_SESSION_RECALL_STATE, 282 CEPH_SESSION_FLUSHMSG, 283 CEPH_SESSION_FLUSHMSG_ACK, 284 CEPH_SESSION_FORCE_RO, 285 CEPH_SESSION_REJECT, 286 }; 287 288 extern const char *ceph_session_op_name(int op); 289 290 struct ceph_mds_session_head { 291 __le32 op; 292 __le64 seq; 293 struct ceph_timespec stamp; 294 __le32 max_caps, max_leases; 295 } __attribute__ ((packed)); 296 297 /* client_request */ 298 /* 299 * metadata ops. 300 * & 0x001000 -> write op 301 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 302 & & 0x100000 -> use weird ino/path trace 303 */ 304 #define CEPH_MDS_OP_WRITE 0x001000 305 enum { 306 CEPH_MDS_OP_LOOKUP = 0x00100, 307 CEPH_MDS_OP_GETATTR = 0x00101, 308 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 309 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 310 CEPH_MDS_OP_LOOKUPINO = 0x00104, 311 CEPH_MDS_OP_LOOKUPNAME = 0x00105, 312 313 CEPH_MDS_OP_SETXATTR = 0x01105, 314 CEPH_MDS_OP_RMXATTR = 0x01106, 315 CEPH_MDS_OP_SETLAYOUT = 0x01107, 316 CEPH_MDS_OP_SETATTR = 0x01108, 317 CEPH_MDS_OP_SETFILELOCK= 0x01109, 318 CEPH_MDS_OP_GETFILELOCK= 0x00110, 319 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 320 321 CEPH_MDS_OP_MKNOD = 0x01201, 322 CEPH_MDS_OP_LINK = 0x01202, 323 CEPH_MDS_OP_UNLINK = 0x01203, 324 CEPH_MDS_OP_RENAME = 0x01204, 325 CEPH_MDS_OP_MKDIR = 0x01220, 326 CEPH_MDS_OP_RMDIR = 0x01221, 327 CEPH_MDS_OP_SYMLINK = 0x01222, 328 329 CEPH_MDS_OP_CREATE = 0x01301, 330 CEPH_MDS_OP_OPEN = 0x00302, 331 CEPH_MDS_OP_READDIR = 0x00305, 332 333 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 334 CEPH_MDS_OP_MKSNAP = 0x01400, 335 CEPH_MDS_OP_RMSNAP = 0x01401, 336 CEPH_MDS_OP_LSSNAP = 0x00402, 337 CEPH_MDS_OP_RENAMESNAP = 0x01403, 338 }; 339 340 extern const char *ceph_mds_op_name(int op); 341 342 343 #define CEPH_SETATTR_MODE 1 344 #define CEPH_SETATTR_UID 2 345 #define CEPH_SETATTR_GID 4 346 #define CEPH_SETATTR_MTIME 8 347 #define CEPH_SETATTR_ATIME 16 348 #define CEPH_SETATTR_SIZE 32 349 #define CEPH_SETATTR_CTIME 64 350 351 /* 352 * Ceph setxattr request flags. 353 */ 354 #define CEPH_XATTR_CREATE (1 << 0) 355 #define CEPH_XATTR_REPLACE (1 << 1) 356 #define CEPH_XATTR_REMOVE (1 << 31) 357 358 /* 359 * readdir request flags; 360 */ 361 #define CEPH_READDIR_REPLY_BITFLAGS (1<<0) 362 363 /* 364 * readdir reply flags. 365 */ 366 #define CEPH_READDIR_FRAG_END (1<<0) 367 #define CEPH_READDIR_FRAG_COMPLETE (1<<8) 368 #define CEPH_READDIR_HASH_ORDER (1<<9) 369 #define CEPH_READDIR_OFFSET_HASH (1<<10) 370 371 /* 372 * open request flags 373 */ 374 #define CEPH_O_RDONLY 00000000 375 #define CEPH_O_WRONLY 00000001 376 #define CEPH_O_RDWR 00000002 377 #define CEPH_O_CREAT 00000100 378 #define CEPH_O_EXCL 00000200 379 #define CEPH_O_TRUNC 00001000 380 #define CEPH_O_DIRECTORY 00200000 381 #define CEPH_O_NOFOLLOW 00400000 382 383 union ceph_mds_request_args { 384 struct { 385 __le32 mask; /* CEPH_CAP_* */ 386 } __attribute__ ((packed)) getattr; 387 struct { 388 __le32 mode; 389 __le32 uid; 390 __le32 gid; 391 struct ceph_timespec mtime; 392 struct ceph_timespec atime; 393 __le64 size, old_size; /* old_size needed by truncate */ 394 __le32 mask; /* CEPH_SETATTR_* */ 395 } __attribute__ ((packed)) setattr; 396 struct { 397 __le32 frag; /* which dir fragment */ 398 __le32 max_entries; /* how many dentries to grab */ 399 __le32 max_bytes; 400 __le16 flags; 401 __le32 offset_hash; 402 } __attribute__ ((packed)) readdir; 403 struct { 404 __le32 mode; 405 __le32 rdev; 406 } __attribute__ ((packed)) mknod; 407 struct { 408 __le32 mode; 409 } __attribute__ ((packed)) mkdir; 410 struct { 411 __le32 flags; 412 __le32 mode; 413 __le32 stripe_unit; /* layout for newly created file */ 414 __le32 stripe_count; /* ... */ 415 __le32 object_size; 416 __le32 file_replication; 417 __le32 mask; /* CEPH_CAP_* */ 418 __le32 old_size; 419 } __attribute__ ((packed)) open; 420 struct { 421 __le32 flags; 422 } __attribute__ ((packed)) setxattr; 423 struct { 424 struct ceph_file_layout_legacy layout; 425 } __attribute__ ((packed)) setlayout; 426 struct { 427 __u8 rule; /* currently fcntl or flock */ 428 __u8 type; /* shared, exclusive, remove*/ 429 __le64 owner; /* owner of the lock */ 430 __le64 pid; /* process id requesting the lock */ 431 __le64 start; /* initial location to lock */ 432 __le64 length; /* num bytes to lock from start */ 433 __u8 wait; /* will caller wait for lock to become available? */ 434 } __attribute__ ((packed)) filelock_change; 435 } __attribute__ ((packed)); 436 437 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 438 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 439 440 struct ceph_mds_request_head { 441 __le64 oldest_client_tid; 442 __le32 mdsmap_epoch; /* on client */ 443 __le32 flags; /* CEPH_MDS_FLAG_* */ 444 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 445 __le16 num_releases; /* # include cap/lease release records */ 446 __le32 op; /* mds op code */ 447 __le32 caller_uid, caller_gid; 448 __le64 ino; /* use this ino for openc, mkdir, mknod, 449 etc. (if replaying) */ 450 union ceph_mds_request_args args; 451 } __attribute__ ((packed)); 452 453 /* cap/lease release record */ 454 struct ceph_mds_request_release { 455 __le64 ino, cap_id; /* ino and unique cap id */ 456 __le32 caps, wanted; /* new issued, wanted */ 457 __le32 seq, issue_seq, mseq; 458 __le32 dname_seq; /* if releasing a dentry lease, a */ 459 __le32 dname_len; /* string follows. */ 460 } __attribute__ ((packed)); 461 462 /* client reply */ 463 struct ceph_mds_reply_head { 464 __le32 op; 465 __le32 result; 466 __le32 mdsmap_epoch; 467 __u8 safe; /* true if committed to disk */ 468 __u8 is_dentry, is_target; /* true if dentry, target inode records 469 are included with reply */ 470 } __attribute__ ((packed)); 471 472 /* one for each node split */ 473 struct ceph_frag_tree_split { 474 __le32 frag; /* this frag splits... */ 475 __le32 by; /* ...by this many bits */ 476 } __attribute__ ((packed)); 477 478 struct ceph_frag_tree_head { 479 __le32 nsplits; /* num ceph_frag_tree_split records */ 480 struct ceph_frag_tree_split splits[]; 481 } __attribute__ ((packed)); 482 483 /* capability issue, for bundling with mds reply */ 484 struct ceph_mds_reply_cap { 485 __le32 caps, wanted; /* caps issued, wanted */ 486 __le64 cap_id; 487 __le32 seq, mseq; 488 __le64 realm; /* snap realm */ 489 __u8 flags; /* CEPH_CAP_FLAG_* */ 490 } __attribute__ ((packed)); 491 492 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 493 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 494 495 /* inode record, for bundling with mds reply */ 496 struct ceph_mds_reply_inode { 497 __le64 ino; 498 __le64 snapid; 499 __le32 rdev; 500 __le64 version; /* inode version */ 501 __le64 xattr_version; /* version for xattr blob */ 502 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 503 struct ceph_file_layout_legacy layout; 504 struct ceph_timespec ctime, mtime, atime; 505 __le32 time_warp_seq; 506 __le64 size, max_size, truncate_size; 507 __le32 truncate_seq; 508 __le32 mode, uid, gid; 509 __le32 nlink; 510 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 511 struct ceph_timespec rctime; 512 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 513 } __attribute__ ((packed)); 514 /* followed by frag array, symlink string, dir layout, xattr blob */ 515 516 /* reply_lease follows dname, and reply_inode */ 517 struct ceph_mds_reply_lease { 518 __le16 mask; /* lease type(s) */ 519 __le32 duration_ms; /* lease duration */ 520 __le32 seq; 521 } __attribute__ ((packed)); 522 523 struct ceph_mds_reply_dirfrag { 524 __le32 frag; /* fragment */ 525 __le32 auth; /* auth mds, if this is a delegation point */ 526 __le32 ndist; /* number of mds' this is replicated on */ 527 __le32 dist[]; 528 } __attribute__ ((packed)); 529 530 #define CEPH_LOCK_FCNTL 1 531 #define CEPH_LOCK_FLOCK 2 532 #define CEPH_LOCK_FCNTL_INTR 3 533 #define CEPH_LOCK_FLOCK_INTR 4 534 535 536 #define CEPH_LOCK_SHARED 1 537 #define CEPH_LOCK_EXCL 2 538 #define CEPH_LOCK_UNLOCK 4 539 540 struct ceph_filelock { 541 __le64 start;/* file offset to start lock at */ 542 __le64 length; /* num bytes to lock; 0 for all following start */ 543 __le64 client; /* which client holds the lock */ 544 __le64 owner; /* owner the lock */ 545 __le64 pid; /* process id holding the lock on the client */ 546 __u8 type; /* shared lock, exclusive lock, or unlock */ 547 } __attribute__ ((packed)); 548 549 550 /* file access modes */ 551 #define CEPH_FILE_MODE_PIN 0 552 #define CEPH_FILE_MODE_RD 1 553 #define CEPH_FILE_MODE_WR 2 554 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 555 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 556 #define CEPH_FILE_MODE_BITS 4 557 558 int ceph_flags_to_mode(int flags); 559 560 #define CEPH_INLINE_NONE ((__u64)-1) 561 562 /* capability bits */ 563 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 564 565 /* generic cap bits */ 566 #define CEPH_CAP_GSHARED 1 /* client can reads */ 567 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 568 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 569 #define CEPH_CAP_GRD 8 /* (file) client can read */ 570 #define CEPH_CAP_GWR 16 /* (file) client can write */ 571 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 572 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 573 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 574 575 #define CEPH_CAP_SIMPLE_BITS 2 576 #define CEPH_CAP_FILE_BITS 8 577 578 /* per-lock shift */ 579 #define CEPH_CAP_SAUTH 2 580 #define CEPH_CAP_SLINK 4 581 #define CEPH_CAP_SXATTR 6 582 #define CEPH_CAP_SFILE 8 583 #define CEPH_CAP_SFLOCK 20 584 585 #define CEPH_CAP_BITS 22 586 587 /* composed values */ 588 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 589 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 590 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 591 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 592 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 593 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 594 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 595 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 596 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 597 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 598 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 599 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 600 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 601 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 602 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 603 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 604 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 605 606 607 /* cap masks (for getattr) */ 608 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 609 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 610 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 611 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 612 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 613 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 614 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 615 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 616 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 617 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 618 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 619 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 620 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 621 CEPH_CAP_AUTH_SHARED | \ 622 CEPH_CAP_LINK_SHARED | \ 623 CEPH_CAP_FILE_SHARED | \ 624 CEPH_CAP_XATTR_SHARED) 625 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 626 CEPH_CAP_FILE_RD) 627 628 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 629 CEPH_CAP_LINK_SHARED | \ 630 CEPH_CAP_XATTR_SHARED | \ 631 CEPH_CAP_FILE_SHARED) 632 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 633 CEPH_CAP_FILE_CACHE) 634 635 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 636 CEPH_CAP_LINK_EXCL | \ 637 CEPH_CAP_XATTR_EXCL | \ 638 CEPH_CAP_FILE_EXCL) 639 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 640 CEPH_CAP_FILE_SHARED) 641 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 642 CEPH_CAP_FILE_EXCL) 643 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 644 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 645 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 646 CEPH_CAP_PIN) 647 648 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 649 CEPH_LOCK_IXATTR) 650 651 int ceph_caps_for_mode(int mode); 652 653 enum { 654 CEPH_CAP_OP_GRANT, /* mds->client grant */ 655 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 656 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 657 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 658 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 659 CEPH_CAP_OP_UPDATE, /* client->mds update */ 660 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 661 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 662 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 663 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 664 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 665 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 666 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 667 }; 668 669 extern const char *ceph_cap_op_name(int op); 670 671 /* flags field in client cap messages (version >= 10) */ 672 #define CEPH_CLIENT_CAPS_SYNC (0x1) 673 674 /* 675 * caps message, used for capability callbacks, acks, requests, etc. 676 */ 677 struct ceph_mds_caps { 678 __le32 op; /* CEPH_CAP_OP_* */ 679 __le64 ino, realm; 680 __le64 cap_id; 681 __le32 seq, issue_seq; 682 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 683 __le32 migrate_seq; 684 __le64 snap_follows; 685 __le32 snap_trace_len; 686 687 /* authlock */ 688 __le32 uid, gid, mode; 689 690 /* linklock */ 691 __le32 nlink; 692 693 /* xattrlock */ 694 __le32 xattr_len; 695 __le64 xattr_version; 696 697 /* filelock */ 698 __le64 size, max_size, truncate_size; 699 __le32 truncate_seq; 700 struct ceph_timespec mtime, atime, ctime; 701 struct ceph_file_layout_legacy layout; 702 __le32 time_warp_seq; 703 } __attribute__ ((packed)); 704 705 struct ceph_mds_cap_peer { 706 __le64 cap_id; 707 __le32 seq; 708 __le32 mseq; 709 __le32 mds; 710 __u8 flags; 711 } __attribute__ ((packed)); 712 713 /* cap release msg head */ 714 struct ceph_mds_cap_release { 715 __le32 num; /* number of cap_items that follow */ 716 } __attribute__ ((packed)); 717 718 struct ceph_mds_cap_item { 719 __le64 ino; 720 __le64 cap_id; 721 __le32 migrate_seq, seq; 722 } __attribute__ ((packed)); 723 724 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 725 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 726 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 727 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 728 729 extern const char *ceph_lease_op_name(int o); 730 731 /* lease msg header */ 732 struct ceph_mds_lease { 733 __u8 action; /* CEPH_MDS_LEASE_* */ 734 __le16 mask; /* which lease */ 735 __le64 ino; 736 __le64 first, last; /* snap range */ 737 __le32 seq; 738 __le32 duration_ms; /* duration of renewal */ 739 } __attribute__ ((packed)); 740 /* followed by a __le32+string for dname */ 741 742 /* client reconnect */ 743 struct ceph_mds_cap_reconnect { 744 __le64 cap_id; 745 __le32 wanted; 746 __le32 issued; 747 __le64 snaprealm; 748 __le64 pathbase; /* base ino for our path to this ino */ 749 __le32 flock_len; /* size of flock state blob, if any */ 750 } __attribute__ ((packed)); 751 /* followed by flock blob */ 752 753 struct ceph_mds_cap_reconnect_v1 { 754 __le64 cap_id; 755 __le32 wanted; 756 __le32 issued; 757 __le64 size; 758 struct ceph_timespec mtime, atime; 759 __le64 snaprealm; 760 __le64 pathbase; /* base ino for our path to this ino */ 761 } __attribute__ ((packed)); 762 763 struct ceph_mds_snaprealm_reconnect { 764 __le64 ino; /* snap realm base */ 765 __le64 seq; /* snap seq for this snap realm */ 766 __le64 parent; /* parent realm */ 767 } __attribute__ ((packed)); 768 769 /* 770 * snaps 771 */ 772 enum { 773 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 774 CEPH_SNAP_OP_CREATE, 775 CEPH_SNAP_OP_DESTROY, 776 CEPH_SNAP_OP_SPLIT, 777 }; 778 779 extern const char *ceph_snap_op_name(int o); 780 781 /* snap msg header */ 782 struct ceph_mds_snap_head { 783 __le32 op; /* CEPH_SNAP_OP_* */ 784 __le64 split; /* ino to split off, if any */ 785 __le32 num_split_inos; /* # inos belonging to new child realm */ 786 __le32 num_split_realms; /* # child realms udner new child realm */ 787 __le32 trace_len; /* size of snap trace blob */ 788 } __attribute__ ((packed)); 789 /* followed by split ino list, then split realms, then the trace blob */ 790 791 /* 792 * encode info about a snaprealm, as viewed by a client 793 */ 794 struct ceph_mds_snap_realm { 795 __le64 ino; /* ino */ 796 __le64 created; /* snap: when created */ 797 __le64 parent; /* ino: parent realm */ 798 __le64 parent_since; /* snap: same parent since */ 799 __le64 seq; /* snap: version */ 800 __le32 num_snaps; 801 __le32 num_prior_parent_snaps; 802 } __attribute__ ((packed)); 803 /* followed by my snap list, then prior parent snap list */ 804 805 #endif 806