1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * ceph_fs.h - Ceph constants and data types to share between kernel and 4 * user space. 5 * 6 * Most types in this file are defined as little-endian, and are 7 * primarily intended to describe data structures that pass over the 8 * wire or that are stored on disk. 9 * 10 * LGPL2 11 */ 12 13 #ifndef CEPH_FS_H 14 #define CEPH_FS_H 15 16 #include <linux/ceph/msgr.h> 17 #include <linux/ceph/rados.h> 18 19 /* 20 * subprotocol versions. when specific messages types or high-level 21 * protocols change, bump the affected components. we keep rev 22 * internal cluster protocols separately from the public, 23 * client-facing protocol. 24 */ 25 #define CEPH_OSDC_PROTOCOL 24 /* server/client */ 26 #define CEPH_MDSC_PROTOCOL 32 /* server/client */ 27 #define CEPH_MONC_PROTOCOL 15 /* server/client */ 28 29 30 #define CEPH_INO_ROOT 1 31 #define CEPH_INO_CEPH 2 /* hidden .ceph dir */ 32 #define CEPH_INO_DOTDOT 3 /* used by ceph fuse for parent (..) */ 33 34 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */ 35 #define CEPH_MAX_MON 31 36 37 /* 38 * legacy ceph_file_layoute 39 */ 40 struct ceph_file_layout_legacy { 41 /* file -> object mapping */ 42 __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple 43 of page size. */ 44 __le32 fl_stripe_count; /* over this many objects */ 45 __le32 fl_object_size; /* until objects are this big, then move to 46 new objects */ 47 __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */ 48 49 /* pg -> disk layout */ 50 __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */ 51 52 /* object -> pg layout */ 53 __le32 fl_unused; /* unused; used to be preferred primary for pg (-1 for none) */ 54 __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */ 55 } __attribute__ ((packed)); 56 57 struct ceph_string; 58 /* 59 * ceph_file_layout - describe data layout for a file/inode 60 */ 61 struct ceph_file_layout { 62 /* file -> object mapping */ 63 u32 stripe_unit; /* stripe unit, in bytes */ 64 u32 stripe_count; /* over this many objects */ 65 u32 object_size; /* until objects are this big */ 66 s64 pool_id; /* rados pool id */ 67 struct ceph_string __rcu *pool_ns; /* rados pool namespace */ 68 }; 69 70 extern int ceph_file_layout_is_valid(const struct ceph_file_layout *layout); 71 extern void ceph_file_layout_from_legacy(struct ceph_file_layout *fl, 72 struct ceph_file_layout_legacy *legacy); 73 extern void ceph_file_layout_to_legacy(struct ceph_file_layout *fl, 74 struct ceph_file_layout_legacy *legacy); 75 76 #define CEPH_MIN_STRIPE_UNIT 65536 77 78 struct ceph_dir_layout { 79 __u8 dl_dir_hash; /* see ceph_hash.h for ids */ 80 __u8 dl_unused1; 81 __u16 dl_unused2; 82 __u32 dl_unused3; 83 } __attribute__ ((packed)); 84 85 /* crypto algorithms */ 86 #define CEPH_CRYPTO_NONE 0x0 87 #define CEPH_CRYPTO_AES 0x1 88 89 #define CEPH_AES_IV "cephsageyudagreg" 90 91 /* security/authentication protocols */ 92 #define CEPH_AUTH_UNKNOWN 0x0 93 #define CEPH_AUTH_NONE 0x1 94 #define CEPH_AUTH_CEPHX 0x2 95 96 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1) 97 98 99 /********************************************* 100 * message layer 101 */ 102 103 /* 104 * message types 105 */ 106 107 /* misc */ 108 #define CEPH_MSG_SHUTDOWN 1 109 #define CEPH_MSG_PING 2 110 111 /* client <-> monitor */ 112 #define CEPH_MSG_MON_MAP 4 113 #define CEPH_MSG_MON_GET_MAP 5 114 #define CEPH_MSG_STATFS 13 115 #define CEPH_MSG_STATFS_REPLY 14 116 #define CEPH_MSG_MON_SUBSCRIBE 15 117 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16 118 #define CEPH_MSG_AUTH 17 119 #define CEPH_MSG_AUTH_REPLY 18 120 #define CEPH_MSG_MON_GET_VERSION 19 121 #define CEPH_MSG_MON_GET_VERSION_REPLY 20 122 123 /* client <-> mds */ 124 #define CEPH_MSG_MDS_MAP 21 125 #define CEPH_MSG_FS_MAP_USER 103 126 127 #define CEPH_MSG_CLIENT_SESSION 22 128 #define CEPH_MSG_CLIENT_RECONNECT 23 129 130 #define CEPH_MSG_CLIENT_REQUEST 24 131 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25 132 #define CEPH_MSG_CLIENT_REPLY 26 133 #define CEPH_MSG_CLIENT_CAPS 0x310 134 #define CEPH_MSG_CLIENT_LEASE 0x311 135 #define CEPH_MSG_CLIENT_SNAP 0x312 136 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313 137 138 /* pool ops */ 139 #define CEPH_MSG_POOLOP_REPLY 48 140 #define CEPH_MSG_POOLOP 49 141 142 /* mon commands */ 143 #define CEPH_MSG_MON_COMMAND 50 144 #define CEPH_MSG_MON_COMMAND_ACK 51 145 146 /* osd */ 147 #define CEPH_MSG_OSD_MAP 41 148 #define CEPH_MSG_OSD_OP 42 149 #define CEPH_MSG_OSD_OPREPLY 43 150 #define CEPH_MSG_WATCH_NOTIFY 44 151 #define CEPH_MSG_OSD_BACKOFF 61 152 153 154 /* watch-notify operations */ 155 enum { 156 CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */ 157 CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */ 158 CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */ 159 }; 160 161 162 struct ceph_mon_request_header { 163 __le64 have_version; 164 __le16 session_mon; 165 __le64 session_mon_tid; 166 } __attribute__ ((packed)); 167 168 struct ceph_mon_statfs { 169 struct ceph_mon_request_header monhdr; 170 struct ceph_fsid fsid; 171 __u8 contains_data_pool; 172 __le64 data_pool; 173 } __attribute__ ((packed)); 174 175 struct ceph_statfs { 176 __le64 kb, kb_used, kb_avail; 177 __le64 num_objects; 178 } __attribute__ ((packed)); 179 180 struct ceph_mon_statfs_reply { 181 struct ceph_fsid fsid; 182 __le64 version; 183 struct ceph_statfs st; 184 } __attribute__ ((packed)); 185 186 struct ceph_mon_command { 187 struct ceph_mon_request_header monhdr; 188 struct ceph_fsid fsid; 189 __le32 num_strs; /* always 1 */ 190 __le32 str_len; 191 char str[]; 192 } __attribute__ ((packed)); 193 194 struct ceph_osd_getmap { 195 struct ceph_mon_request_header monhdr; 196 struct ceph_fsid fsid; 197 __le32 start; 198 } __attribute__ ((packed)); 199 200 struct ceph_mds_getmap { 201 struct ceph_mon_request_header monhdr; 202 struct ceph_fsid fsid; 203 } __attribute__ ((packed)); 204 205 struct ceph_client_mount { 206 struct ceph_mon_request_header monhdr; 207 } __attribute__ ((packed)); 208 209 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ 210 211 struct ceph_mon_subscribe_item { 212 __le64 start; 213 __u8 flags; 214 } __attribute__ ((packed)); 215 216 struct ceph_mon_subscribe_ack { 217 __le32 duration; /* seconds */ 218 struct ceph_fsid fsid; 219 } __attribute__ ((packed)); 220 221 #define CEPH_FS_CLUSTER_ID_NONE -1 222 223 /* 224 * mdsmap flags 225 */ 226 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ 227 228 /* 229 * mds states 230 * > 0 -> in 231 * <= 0 -> out 232 */ 233 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 234 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 235 empty log. */ 236 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 237 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 238 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 239 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 240 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 241 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */ 242 243 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ 244 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed 245 operations (import, rename, etc.) */ 246 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ 247 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ 248 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ 249 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ 250 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ 251 252 extern const char *ceph_mds_state_name(int s); 253 254 255 /* 256 * metadata lock types. 257 * - these are bitmasks.. we can compose them 258 * - they also define the lock ordering by the MDS 259 * - a few of these are internal to the mds 260 */ 261 #define CEPH_LOCK_DVERSION 1 262 #define CEPH_LOCK_DN 2 263 #define CEPH_LOCK_ISNAP 16 264 #define CEPH_LOCK_IVERSION 32 /* mds internal */ 265 #define CEPH_LOCK_IFILE 64 266 #define CEPH_LOCK_IAUTH 128 267 #define CEPH_LOCK_ILINK 256 268 #define CEPH_LOCK_IDFT 512 /* dir frag tree */ 269 #define CEPH_LOCK_INEST 1024 /* mds internal */ 270 #define CEPH_LOCK_IXATTR 2048 271 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ 272 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ 273 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ 274 275 /* client_session ops */ 276 enum { 277 CEPH_SESSION_REQUEST_OPEN, 278 CEPH_SESSION_OPEN, 279 CEPH_SESSION_REQUEST_CLOSE, 280 CEPH_SESSION_CLOSE, 281 CEPH_SESSION_REQUEST_RENEWCAPS, 282 CEPH_SESSION_RENEWCAPS, 283 CEPH_SESSION_STALE, 284 CEPH_SESSION_RECALL_STATE, 285 CEPH_SESSION_FLUSHMSG, 286 CEPH_SESSION_FLUSHMSG_ACK, 287 CEPH_SESSION_FORCE_RO, 288 CEPH_SESSION_REJECT, 289 }; 290 291 extern const char *ceph_session_op_name(int op); 292 293 struct ceph_mds_session_head { 294 __le32 op; 295 __le64 seq; 296 struct ceph_timespec stamp; 297 __le32 max_caps, max_leases; 298 } __attribute__ ((packed)); 299 300 /* client_request */ 301 /* 302 * metadata ops. 303 * & 0x001000 -> write op 304 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 305 & & 0x100000 -> use weird ino/path trace 306 */ 307 #define CEPH_MDS_OP_WRITE 0x001000 308 enum { 309 CEPH_MDS_OP_LOOKUP = 0x00100, 310 CEPH_MDS_OP_GETATTR = 0x00101, 311 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 312 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 313 CEPH_MDS_OP_LOOKUPINO = 0x00104, 314 CEPH_MDS_OP_LOOKUPNAME = 0x00105, 315 316 CEPH_MDS_OP_SETXATTR = 0x01105, 317 CEPH_MDS_OP_RMXATTR = 0x01106, 318 CEPH_MDS_OP_SETLAYOUT = 0x01107, 319 CEPH_MDS_OP_SETATTR = 0x01108, 320 CEPH_MDS_OP_SETFILELOCK= 0x01109, 321 CEPH_MDS_OP_GETFILELOCK= 0x00110, 322 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 323 324 CEPH_MDS_OP_MKNOD = 0x01201, 325 CEPH_MDS_OP_LINK = 0x01202, 326 CEPH_MDS_OP_UNLINK = 0x01203, 327 CEPH_MDS_OP_RENAME = 0x01204, 328 CEPH_MDS_OP_MKDIR = 0x01220, 329 CEPH_MDS_OP_RMDIR = 0x01221, 330 CEPH_MDS_OP_SYMLINK = 0x01222, 331 332 CEPH_MDS_OP_CREATE = 0x01301, 333 CEPH_MDS_OP_OPEN = 0x00302, 334 CEPH_MDS_OP_READDIR = 0x00305, 335 336 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 337 CEPH_MDS_OP_MKSNAP = 0x01400, 338 CEPH_MDS_OP_RMSNAP = 0x01401, 339 CEPH_MDS_OP_LSSNAP = 0x00402, 340 CEPH_MDS_OP_RENAMESNAP = 0x01403, 341 }; 342 343 extern const char *ceph_mds_op_name(int op); 344 345 346 #define CEPH_SETATTR_MODE 1 347 #define CEPH_SETATTR_UID 2 348 #define CEPH_SETATTR_GID 4 349 #define CEPH_SETATTR_MTIME 8 350 #define CEPH_SETATTR_ATIME 16 351 #define CEPH_SETATTR_SIZE 32 352 #define CEPH_SETATTR_CTIME 64 353 354 /* 355 * Ceph setxattr request flags. 356 */ 357 #define CEPH_XATTR_CREATE (1 << 0) 358 #define CEPH_XATTR_REPLACE (1 << 1) 359 #define CEPH_XATTR_REMOVE (1 << 31) 360 361 /* 362 * readdir request flags; 363 */ 364 #define CEPH_READDIR_REPLY_BITFLAGS (1<<0) 365 366 /* 367 * readdir reply flags. 368 */ 369 #define CEPH_READDIR_FRAG_END (1<<0) 370 #define CEPH_READDIR_FRAG_COMPLETE (1<<8) 371 #define CEPH_READDIR_HASH_ORDER (1<<9) 372 #define CEPH_READDIR_OFFSET_HASH (1<<10) 373 374 /* 375 * open request flags 376 */ 377 #define CEPH_O_RDONLY 00000000 378 #define CEPH_O_WRONLY 00000001 379 #define CEPH_O_RDWR 00000002 380 #define CEPH_O_CREAT 00000100 381 #define CEPH_O_EXCL 00000200 382 #define CEPH_O_TRUNC 00001000 383 #define CEPH_O_DIRECTORY 00200000 384 #define CEPH_O_NOFOLLOW 00400000 385 386 union ceph_mds_request_args { 387 struct { 388 __le32 mask; /* CEPH_CAP_* */ 389 } __attribute__ ((packed)) getattr; 390 struct { 391 __le32 mode; 392 __le32 uid; 393 __le32 gid; 394 struct ceph_timespec mtime; 395 struct ceph_timespec atime; 396 __le64 size, old_size; /* old_size needed by truncate */ 397 __le32 mask; /* CEPH_SETATTR_* */ 398 } __attribute__ ((packed)) setattr; 399 struct { 400 __le32 frag; /* which dir fragment */ 401 __le32 max_entries; /* how many dentries to grab */ 402 __le32 max_bytes; 403 __le16 flags; 404 __le32 offset_hash; 405 } __attribute__ ((packed)) readdir; 406 struct { 407 __le32 mode; 408 __le32 rdev; 409 } __attribute__ ((packed)) mknod; 410 struct { 411 __le32 mode; 412 } __attribute__ ((packed)) mkdir; 413 struct { 414 __le32 flags; 415 __le32 mode; 416 __le32 stripe_unit; /* layout for newly created file */ 417 __le32 stripe_count; /* ... */ 418 __le32 object_size; 419 __le32 file_replication; 420 __le32 mask; /* CEPH_CAP_* */ 421 __le32 old_size; 422 } __attribute__ ((packed)) open; 423 struct { 424 __le32 flags; 425 } __attribute__ ((packed)) setxattr; 426 struct { 427 struct ceph_file_layout_legacy layout; 428 } __attribute__ ((packed)) setlayout; 429 struct { 430 __u8 rule; /* currently fcntl or flock */ 431 __u8 type; /* shared, exclusive, remove*/ 432 __le64 owner; /* owner of the lock */ 433 __le64 pid; /* process id requesting the lock */ 434 __le64 start; /* initial location to lock */ 435 __le64 length; /* num bytes to lock from start */ 436 __u8 wait; /* will caller wait for lock to become available? */ 437 } __attribute__ ((packed)) filelock_change; 438 } __attribute__ ((packed)); 439 440 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 441 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 442 443 struct ceph_mds_request_head { 444 __le64 oldest_client_tid; 445 __le32 mdsmap_epoch; /* on client */ 446 __le32 flags; /* CEPH_MDS_FLAG_* */ 447 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 448 __le16 num_releases; /* # include cap/lease release records */ 449 __le32 op; /* mds op code */ 450 __le32 caller_uid, caller_gid; 451 __le64 ino; /* use this ino for openc, mkdir, mknod, 452 etc. (if replaying) */ 453 union ceph_mds_request_args args; 454 } __attribute__ ((packed)); 455 456 /* cap/lease release record */ 457 struct ceph_mds_request_release { 458 __le64 ino, cap_id; /* ino and unique cap id */ 459 __le32 caps, wanted; /* new issued, wanted */ 460 __le32 seq, issue_seq, mseq; 461 __le32 dname_seq; /* if releasing a dentry lease, a */ 462 __le32 dname_len; /* string follows. */ 463 } __attribute__ ((packed)); 464 465 /* client reply */ 466 struct ceph_mds_reply_head { 467 __le32 op; 468 __le32 result; 469 __le32 mdsmap_epoch; 470 __u8 safe; /* true if committed to disk */ 471 __u8 is_dentry, is_target; /* true if dentry, target inode records 472 are included with reply */ 473 } __attribute__ ((packed)); 474 475 /* one for each node split */ 476 struct ceph_frag_tree_split { 477 __le32 frag; /* this frag splits... */ 478 __le32 by; /* ...by this many bits */ 479 } __attribute__ ((packed)); 480 481 struct ceph_frag_tree_head { 482 __le32 nsplits; /* num ceph_frag_tree_split records */ 483 struct ceph_frag_tree_split splits[]; 484 } __attribute__ ((packed)); 485 486 /* capability issue, for bundling with mds reply */ 487 struct ceph_mds_reply_cap { 488 __le32 caps, wanted; /* caps issued, wanted */ 489 __le64 cap_id; 490 __le32 seq, mseq; 491 __le64 realm; /* snap realm */ 492 __u8 flags; /* CEPH_CAP_FLAG_* */ 493 } __attribute__ ((packed)); 494 495 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 496 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 497 498 /* inode record, for bundling with mds reply */ 499 struct ceph_mds_reply_inode { 500 __le64 ino; 501 __le64 snapid; 502 __le32 rdev; 503 __le64 version; /* inode version */ 504 __le64 xattr_version; /* version for xattr blob */ 505 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 506 struct ceph_file_layout_legacy layout; 507 struct ceph_timespec ctime, mtime, atime; 508 __le32 time_warp_seq; 509 __le64 size, max_size, truncate_size; 510 __le32 truncate_seq; 511 __le32 mode, uid, gid; 512 __le32 nlink; 513 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 514 struct ceph_timespec rctime; 515 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 516 } __attribute__ ((packed)); 517 /* followed by frag array, symlink string, dir layout, xattr blob */ 518 519 /* reply_lease follows dname, and reply_inode */ 520 struct ceph_mds_reply_lease { 521 __le16 mask; /* lease type(s) */ 522 __le32 duration_ms; /* lease duration */ 523 __le32 seq; 524 } __attribute__ ((packed)); 525 526 struct ceph_mds_reply_dirfrag { 527 __le32 frag; /* fragment */ 528 __le32 auth; /* auth mds, if this is a delegation point */ 529 __le32 ndist; /* number of mds' this is replicated on */ 530 __le32 dist[]; 531 } __attribute__ ((packed)); 532 533 #define CEPH_LOCK_FCNTL 1 534 #define CEPH_LOCK_FLOCK 2 535 #define CEPH_LOCK_FCNTL_INTR 3 536 #define CEPH_LOCK_FLOCK_INTR 4 537 538 539 #define CEPH_LOCK_SHARED 1 540 #define CEPH_LOCK_EXCL 2 541 #define CEPH_LOCK_UNLOCK 4 542 543 struct ceph_filelock { 544 __le64 start;/* file offset to start lock at */ 545 __le64 length; /* num bytes to lock; 0 for all following start */ 546 __le64 client; /* which client holds the lock */ 547 __le64 owner; /* owner the lock */ 548 __le64 pid; /* process id holding the lock on the client */ 549 __u8 type; /* shared lock, exclusive lock, or unlock */ 550 } __attribute__ ((packed)); 551 552 553 /* file access modes */ 554 #define CEPH_FILE_MODE_PIN 0 555 #define CEPH_FILE_MODE_RD 1 556 #define CEPH_FILE_MODE_WR 2 557 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 558 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 559 #define CEPH_FILE_MODE_BITS 4 560 561 int ceph_flags_to_mode(int flags); 562 563 #define CEPH_INLINE_NONE ((__u64)-1) 564 565 /* capability bits */ 566 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 567 568 /* generic cap bits */ 569 #define CEPH_CAP_GSHARED 1 /* client can reads */ 570 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 571 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 572 #define CEPH_CAP_GRD 8 /* (file) client can read */ 573 #define CEPH_CAP_GWR 16 /* (file) client can write */ 574 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 575 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 576 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 577 578 #define CEPH_CAP_SIMPLE_BITS 2 579 #define CEPH_CAP_FILE_BITS 8 580 581 /* per-lock shift */ 582 #define CEPH_CAP_SAUTH 2 583 #define CEPH_CAP_SLINK 4 584 #define CEPH_CAP_SXATTR 6 585 #define CEPH_CAP_SFILE 8 586 #define CEPH_CAP_SFLOCK 20 587 588 #define CEPH_CAP_BITS 22 589 590 /* composed values */ 591 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 592 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 593 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 594 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 595 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 596 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 597 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 598 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 599 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 600 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 601 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 602 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 603 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 604 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 605 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 606 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 607 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 608 609 610 /* cap masks (for getattr) */ 611 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 612 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 613 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 614 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 615 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 616 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 617 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 618 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 619 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 620 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 621 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 622 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 623 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 624 CEPH_CAP_AUTH_SHARED | \ 625 CEPH_CAP_LINK_SHARED | \ 626 CEPH_CAP_FILE_SHARED | \ 627 CEPH_CAP_XATTR_SHARED) 628 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 629 CEPH_CAP_FILE_RD) 630 631 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 632 CEPH_CAP_LINK_SHARED | \ 633 CEPH_CAP_XATTR_SHARED | \ 634 CEPH_CAP_FILE_SHARED) 635 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 636 CEPH_CAP_FILE_CACHE) 637 638 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 639 CEPH_CAP_LINK_EXCL | \ 640 CEPH_CAP_XATTR_EXCL | \ 641 CEPH_CAP_FILE_EXCL) 642 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 643 CEPH_CAP_FILE_SHARED) 644 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 645 CEPH_CAP_FILE_EXCL) 646 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 647 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 648 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 649 CEPH_CAP_PIN) 650 651 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 652 CEPH_LOCK_IXATTR) 653 654 int ceph_caps_for_mode(int mode); 655 656 enum { 657 CEPH_CAP_OP_GRANT, /* mds->client grant */ 658 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 659 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 660 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 661 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 662 CEPH_CAP_OP_UPDATE, /* client->mds update */ 663 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 664 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 665 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 666 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 667 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 668 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 669 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 670 }; 671 672 extern const char *ceph_cap_op_name(int op); 673 674 /* flags field in client cap messages (version >= 10) */ 675 #define CEPH_CLIENT_CAPS_SYNC (1<<0) 676 #define CEPH_CLIENT_CAPS_NO_CAPSNAP (1<<1) 677 #define CEPH_CLIENT_CAPS_PENDING_CAPSNAP (1<<2); 678 679 /* 680 * caps message, used for capability callbacks, acks, requests, etc. 681 */ 682 struct ceph_mds_caps { 683 __le32 op; /* CEPH_CAP_OP_* */ 684 __le64 ino, realm; 685 __le64 cap_id; 686 __le32 seq, issue_seq; 687 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 688 __le32 migrate_seq; 689 __le64 snap_follows; 690 __le32 snap_trace_len; 691 692 /* authlock */ 693 __le32 uid, gid, mode; 694 695 /* linklock */ 696 __le32 nlink; 697 698 /* xattrlock */ 699 __le32 xattr_len; 700 __le64 xattr_version; 701 702 /* filelock */ 703 __le64 size, max_size, truncate_size; 704 __le32 truncate_seq; 705 struct ceph_timespec mtime, atime, ctime; 706 struct ceph_file_layout_legacy layout; 707 __le32 time_warp_seq; 708 } __attribute__ ((packed)); 709 710 struct ceph_mds_cap_peer { 711 __le64 cap_id; 712 __le32 seq; 713 __le32 mseq; 714 __le32 mds; 715 __u8 flags; 716 } __attribute__ ((packed)); 717 718 /* cap release msg head */ 719 struct ceph_mds_cap_release { 720 __le32 num; /* number of cap_items that follow */ 721 } __attribute__ ((packed)); 722 723 struct ceph_mds_cap_item { 724 __le64 ino; 725 __le64 cap_id; 726 __le32 migrate_seq, seq; 727 } __attribute__ ((packed)); 728 729 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 730 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 731 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 732 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 733 734 extern const char *ceph_lease_op_name(int o); 735 736 /* lease msg header */ 737 struct ceph_mds_lease { 738 __u8 action; /* CEPH_MDS_LEASE_* */ 739 __le16 mask; /* which lease */ 740 __le64 ino; 741 __le64 first, last; /* snap range */ 742 __le32 seq; 743 __le32 duration_ms; /* duration of renewal */ 744 } __attribute__ ((packed)); 745 /* followed by a __le32+string for dname */ 746 747 /* client reconnect */ 748 struct ceph_mds_cap_reconnect { 749 __le64 cap_id; 750 __le32 wanted; 751 __le32 issued; 752 __le64 snaprealm; 753 __le64 pathbase; /* base ino for our path to this ino */ 754 __le32 flock_len; /* size of flock state blob, if any */ 755 } __attribute__ ((packed)); 756 /* followed by flock blob */ 757 758 struct ceph_mds_cap_reconnect_v1 { 759 __le64 cap_id; 760 __le32 wanted; 761 __le32 issued; 762 __le64 size; 763 struct ceph_timespec mtime, atime; 764 __le64 snaprealm; 765 __le64 pathbase; /* base ino for our path to this ino */ 766 } __attribute__ ((packed)); 767 768 struct ceph_mds_snaprealm_reconnect { 769 __le64 ino; /* snap realm base */ 770 __le64 seq; /* snap seq for this snap realm */ 771 __le64 parent; /* parent realm */ 772 } __attribute__ ((packed)); 773 774 /* 775 * snaps 776 */ 777 enum { 778 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 779 CEPH_SNAP_OP_CREATE, 780 CEPH_SNAP_OP_DESTROY, 781 CEPH_SNAP_OP_SPLIT, 782 }; 783 784 extern const char *ceph_snap_op_name(int o); 785 786 /* snap msg header */ 787 struct ceph_mds_snap_head { 788 __le32 op; /* CEPH_SNAP_OP_* */ 789 __le64 split; /* ino to split off, if any */ 790 __le32 num_split_inos; /* # inos belonging to new child realm */ 791 __le32 num_split_realms; /* # child realms udner new child realm */ 792 __le32 trace_len; /* size of snap trace blob */ 793 } __attribute__ ((packed)); 794 /* followed by split ino list, then split realms, then the trace blob */ 795 796 /* 797 * encode info about a snaprealm, as viewed by a client 798 */ 799 struct ceph_mds_snap_realm { 800 __le64 ino; /* ino */ 801 __le64 created; /* snap: when created */ 802 __le64 parent; /* ino: parent realm */ 803 __le64 parent_since; /* snap: same parent since */ 804 __le64 seq; /* snap: version */ 805 __le32 num_snaps; 806 __le32 num_prior_parent_snaps; 807 } __attribute__ ((packed)); 808 /* followed by my snap list, then prior parent snap list */ 809 810 #endif 811