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 #define CEPH_READDIR_OFFSET_HASH (1<<10) 369 370 /* 371 * open request flags 372 */ 373 #define CEPH_O_RDONLY 00000000 374 #define CEPH_O_WRONLY 00000001 375 #define CEPH_O_RDWR 00000002 376 #define CEPH_O_CREAT 00000100 377 #define CEPH_O_EXCL 00000200 378 #define CEPH_O_TRUNC 00001000 379 #define CEPH_O_DIRECTORY 00200000 380 #define CEPH_O_NOFOLLOW 00400000 381 382 union ceph_mds_request_args { 383 struct { 384 __le32 mask; /* CEPH_CAP_* */ 385 } __attribute__ ((packed)) getattr; 386 struct { 387 __le32 mode; 388 __le32 uid; 389 __le32 gid; 390 struct ceph_timespec mtime; 391 struct ceph_timespec atime; 392 __le64 size, old_size; /* old_size needed by truncate */ 393 __le32 mask; /* CEPH_SETATTR_* */ 394 } __attribute__ ((packed)) setattr; 395 struct { 396 __le32 frag; /* which dir fragment */ 397 __le32 max_entries; /* how many dentries to grab */ 398 __le32 max_bytes; 399 __le16 flags; 400 __le32 offset_hash; 401 } __attribute__ ((packed)) readdir; 402 struct { 403 __le32 mode; 404 __le32 rdev; 405 } __attribute__ ((packed)) mknod; 406 struct { 407 __le32 mode; 408 } __attribute__ ((packed)) mkdir; 409 struct { 410 __le32 flags; 411 __le32 mode; 412 __le32 stripe_unit; /* layout for newly created file */ 413 __le32 stripe_count; /* ... */ 414 __le32 object_size; 415 __le32 file_replication; 416 __le32 mask; /* CEPH_CAP_* */ 417 __le32 old_size; 418 } __attribute__ ((packed)) open; 419 struct { 420 __le32 flags; 421 } __attribute__ ((packed)) setxattr; 422 struct { 423 struct ceph_file_layout_legacy layout; 424 } __attribute__ ((packed)) setlayout; 425 struct { 426 __u8 rule; /* currently fcntl or flock */ 427 __u8 type; /* shared, exclusive, remove*/ 428 __le64 owner; /* owner of the lock */ 429 __le64 pid; /* process id requesting the lock */ 430 __le64 start; /* initial location to lock */ 431 __le64 length; /* num bytes to lock from start */ 432 __u8 wait; /* will caller wait for lock to become available? */ 433 } __attribute__ ((packed)) filelock_change; 434 } __attribute__ ((packed)); 435 436 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 437 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 438 439 struct ceph_mds_request_head { 440 __le64 oldest_client_tid; 441 __le32 mdsmap_epoch; /* on client */ 442 __le32 flags; /* CEPH_MDS_FLAG_* */ 443 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 444 __le16 num_releases; /* # include cap/lease release records */ 445 __le32 op; /* mds op code */ 446 __le32 caller_uid, caller_gid; 447 __le64 ino; /* use this ino for openc, mkdir, mknod, 448 etc. (if replaying) */ 449 union ceph_mds_request_args args; 450 } __attribute__ ((packed)); 451 452 /* cap/lease release record */ 453 struct ceph_mds_request_release { 454 __le64 ino, cap_id; /* ino and unique cap id */ 455 __le32 caps, wanted; /* new issued, wanted */ 456 __le32 seq, issue_seq, mseq; 457 __le32 dname_seq; /* if releasing a dentry lease, a */ 458 __le32 dname_len; /* string follows. */ 459 } __attribute__ ((packed)); 460 461 /* client reply */ 462 struct ceph_mds_reply_head { 463 __le32 op; 464 __le32 result; 465 __le32 mdsmap_epoch; 466 __u8 safe; /* true if committed to disk */ 467 __u8 is_dentry, is_target; /* true if dentry, target inode records 468 are included with reply */ 469 } __attribute__ ((packed)); 470 471 /* one for each node split */ 472 struct ceph_frag_tree_split { 473 __le32 frag; /* this frag splits... */ 474 __le32 by; /* ...by this many bits */ 475 } __attribute__ ((packed)); 476 477 struct ceph_frag_tree_head { 478 __le32 nsplits; /* num ceph_frag_tree_split records */ 479 struct ceph_frag_tree_split splits[]; 480 } __attribute__ ((packed)); 481 482 /* capability issue, for bundling with mds reply */ 483 struct ceph_mds_reply_cap { 484 __le32 caps, wanted; /* caps issued, wanted */ 485 __le64 cap_id; 486 __le32 seq, mseq; 487 __le64 realm; /* snap realm */ 488 __u8 flags; /* CEPH_CAP_FLAG_* */ 489 } __attribute__ ((packed)); 490 491 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 492 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 493 494 /* inode record, for bundling with mds reply */ 495 struct ceph_mds_reply_inode { 496 __le64 ino; 497 __le64 snapid; 498 __le32 rdev; 499 __le64 version; /* inode version */ 500 __le64 xattr_version; /* version for xattr blob */ 501 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 502 struct ceph_file_layout_legacy layout; 503 struct ceph_timespec ctime, mtime, atime; 504 __le32 time_warp_seq; 505 __le64 size, max_size, truncate_size; 506 __le32 truncate_seq; 507 __le32 mode, uid, gid; 508 __le32 nlink; 509 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 510 struct ceph_timespec rctime; 511 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 512 } __attribute__ ((packed)); 513 /* followed by frag array, symlink string, dir layout, xattr blob */ 514 515 /* reply_lease follows dname, and reply_inode */ 516 struct ceph_mds_reply_lease { 517 __le16 mask; /* lease type(s) */ 518 __le32 duration_ms; /* lease duration */ 519 __le32 seq; 520 } __attribute__ ((packed)); 521 522 struct ceph_mds_reply_dirfrag { 523 __le32 frag; /* fragment */ 524 __le32 auth; /* auth mds, if this is a delegation point */ 525 __le32 ndist; /* number of mds' this is replicated on */ 526 __le32 dist[]; 527 } __attribute__ ((packed)); 528 529 #define CEPH_LOCK_FCNTL 1 530 #define CEPH_LOCK_FLOCK 2 531 #define CEPH_LOCK_FCNTL_INTR 3 532 #define CEPH_LOCK_FLOCK_INTR 4 533 534 535 #define CEPH_LOCK_SHARED 1 536 #define CEPH_LOCK_EXCL 2 537 #define CEPH_LOCK_UNLOCK 4 538 539 struct ceph_filelock { 540 __le64 start;/* file offset to start lock at */ 541 __le64 length; /* num bytes to lock; 0 for all following start */ 542 __le64 client; /* which client holds the lock */ 543 __le64 owner; /* owner the lock */ 544 __le64 pid; /* process id holding the lock on the client */ 545 __u8 type; /* shared lock, exclusive lock, or unlock */ 546 } __attribute__ ((packed)); 547 548 549 /* file access modes */ 550 #define CEPH_FILE_MODE_PIN 0 551 #define CEPH_FILE_MODE_RD 1 552 #define CEPH_FILE_MODE_WR 2 553 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 554 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 555 #define CEPH_FILE_MODE_BITS 4 556 557 int ceph_flags_to_mode(int flags); 558 559 #define CEPH_INLINE_NONE ((__u64)-1) 560 561 /* capability bits */ 562 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 563 564 /* generic cap bits */ 565 #define CEPH_CAP_GSHARED 1 /* client can reads */ 566 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 567 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 568 #define CEPH_CAP_GRD 8 /* (file) client can read */ 569 #define CEPH_CAP_GWR 16 /* (file) client can write */ 570 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 571 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 572 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 573 574 #define CEPH_CAP_SIMPLE_BITS 2 575 #define CEPH_CAP_FILE_BITS 8 576 577 /* per-lock shift */ 578 #define CEPH_CAP_SAUTH 2 579 #define CEPH_CAP_SLINK 4 580 #define CEPH_CAP_SXATTR 6 581 #define CEPH_CAP_SFILE 8 582 #define CEPH_CAP_SFLOCK 20 583 584 #define CEPH_CAP_BITS 22 585 586 /* composed values */ 587 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 588 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 589 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 590 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 591 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 592 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 593 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 594 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 595 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 596 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 597 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 598 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 599 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 600 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 601 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 602 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 603 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 604 605 606 /* cap masks (for getattr) */ 607 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 608 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 609 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 610 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 611 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 612 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 613 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 614 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 615 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 616 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 617 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 618 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 619 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 620 CEPH_CAP_AUTH_SHARED | \ 621 CEPH_CAP_LINK_SHARED | \ 622 CEPH_CAP_FILE_SHARED | \ 623 CEPH_CAP_XATTR_SHARED) 624 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 625 CEPH_CAP_FILE_RD) 626 627 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 628 CEPH_CAP_LINK_SHARED | \ 629 CEPH_CAP_XATTR_SHARED | \ 630 CEPH_CAP_FILE_SHARED) 631 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 632 CEPH_CAP_FILE_CACHE) 633 634 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 635 CEPH_CAP_LINK_EXCL | \ 636 CEPH_CAP_XATTR_EXCL | \ 637 CEPH_CAP_FILE_EXCL) 638 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 639 CEPH_CAP_FILE_SHARED) 640 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 641 CEPH_CAP_FILE_EXCL) 642 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 643 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 644 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 645 CEPH_CAP_PIN) 646 647 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 648 CEPH_LOCK_IXATTR) 649 650 int ceph_caps_for_mode(int mode); 651 652 enum { 653 CEPH_CAP_OP_GRANT, /* mds->client grant */ 654 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 655 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 656 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 657 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 658 CEPH_CAP_OP_UPDATE, /* client->mds update */ 659 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 660 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 661 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 662 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 663 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 664 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 665 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 666 }; 667 668 extern const char *ceph_cap_op_name(int op); 669 670 /* flags field in client cap messages (version >= 10) */ 671 #define CEPH_CLIENT_CAPS_SYNC (0x1) 672 673 /* 674 * caps message, used for capability callbacks, acks, requests, etc. 675 */ 676 struct ceph_mds_caps { 677 __le32 op; /* CEPH_CAP_OP_* */ 678 __le64 ino, realm; 679 __le64 cap_id; 680 __le32 seq, issue_seq; 681 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 682 __le32 migrate_seq; 683 __le64 snap_follows; 684 __le32 snap_trace_len; 685 686 /* authlock */ 687 __le32 uid, gid, mode; 688 689 /* linklock */ 690 __le32 nlink; 691 692 /* xattrlock */ 693 __le32 xattr_len; 694 __le64 xattr_version; 695 696 /* filelock */ 697 __le64 size, max_size, truncate_size; 698 __le32 truncate_seq; 699 struct ceph_timespec mtime, atime, ctime; 700 struct ceph_file_layout_legacy layout; 701 __le32 time_warp_seq; 702 } __attribute__ ((packed)); 703 704 struct ceph_mds_cap_peer { 705 __le64 cap_id; 706 __le32 seq; 707 __le32 mseq; 708 __le32 mds; 709 __u8 flags; 710 } __attribute__ ((packed)); 711 712 /* cap release msg head */ 713 struct ceph_mds_cap_release { 714 __le32 num; /* number of cap_items that follow */ 715 } __attribute__ ((packed)); 716 717 struct ceph_mds_cap_item { 718 __le64 ino; 719 __le64 cap_id; 720 __le32 migrate_seq, seq; 721 } __attribute__ ((packed)); 722 723 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 724 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 725 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 726 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 727 728 extern const char *ceph_lease_op_name(int o); 729 730 /* lease msg header */ 731 struct ceph_mds_lease { 732 __u8 action; /* CEPH_MDS_LEASE_* */ 733 __le16 mask; /* which lease */ 734 __le64 ino; 735 __le64 first, last; /* snap range */ 736 __le32 seq; 737 __le32 duration_ms; /* duration of renewal */ 738 } __attribute__ ((packed)); 739 /* followed by a __le32+string for dname */ 740 741 /* client reconnect */ 742 struct ceph_mds_cap_reconnect { 743 __le64 cap_id; 744 __le32 wanted; 745 __le32 issued; 746 __le64 snaprealm; 747 __le64 pathbase; /* base ino for our path to this ino */ 748 __le32 flock_len; /* size of flock state blob, if any */ 749 } __attribute__ ((packed)); 750 /* followed by flock blob */ 751 752 struct ceph_mds_cap_reconnect_v1 { 753 __le64 cap_id; 754 __le32 wanted; 755 __le32 issued; 756 __le64 size; 757 struct ceph_timespec mtime, atime; 758 __le64 snaprealm; 759 __le64 pathbase; /* base ino for our path to this ino */ 760 } __attribute__ ((packed)); 761 762 struct ceph_mds_snaprealm_reconnect { 763 __le64 ino; /* snap realm base */ 764 __le64 seq; /* snap seq for this snap realm */ 765 __le64 parent; /* parent realm */ 766 } __attribute__ ((packed)); 767 768 /* 769 * snaps 770 */ 771 enum { 772 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 773 CEPH_SNAP_OP_CREATE, 774 CEPH_SNAP_OP_DESTROY, 775 CEPH_SNAP_OP_SPLIT, 776 }; 777 778 extern const char *ceph_snap_op_name(int o); 779 780 /* snap msg header */ 781 struct ceph_mds_snap_head { 782 __le32 op; /* CEPH_SNAP_OP_* */ 783 __le64 split; /* ino to split off, if any */ 784 __le32 num_split_inos; /* # inos belonging to new child realm */ 785 __le32 num_split_realms; /* # child realms udner new child realm */ 786 __le32 trace_len; /* size of snap trace blob */ 787 } __attribute__ ((packed)); 788 /* followed by split ino list, then split realms, then the trace blob */ 789 790 /* 791 * encode info about a snaprealm, as viewed by a client 792 */ 793 struct ceph_mds_snap_realm { 794 __le64 ino; /* ino */ 795 __le64 created; /* snap: when created */ 796 __le64 parent; /* ino: parent realm */ 797 __le64 parent_since; /* snap: same parent since */ 798 __le64 seq; /* snap: version */ 799 __le32 num_snaps; 800 __le32 num_prior_parent_snaps; 801 } __attribute__ ((packed)); 802 /* followed by my snap list, then prior parent snap list */ 803 804 #endif 805