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