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 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_MODE_NONE 0 96 #define CEPH_AUTH_MODE_AUTHORIZER 1 97 #define CEPH_AUTH_MODE_MON 10 98 99 /* msgr2 protocol modes */ 100 #define CEPH_CON_MODE_UNKNOWN 0x0 101 #define CEPH_CON_MODE_CRC 0x1 102 #define CEPH_CON_MODE_SECURE 0x2 103 104 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1) 105 106 const char *ceph_auth_proto_name(int proto); 107 const char *ceph_con_mode_name(int mode); 108 109 /********************************************* 110 * message layer 111 */ 112 113 /* 114 * message types 115 */ 116 117 /* misc */ 118 #define CEPH_MSG_SHUTDOWN 1 119 #define CEPH_MSG_PING 2 120 121 /* client <-> monitor */ 122 #define CEPH_MSG_MON_MAP 4 123 #define CEPH_MSG_MON_GET_MAP 5 124 #define CEPH_MSG_STATFS 13 125 #define CEPH_MSG_STATFS_REPLY 14 126 #define CEPH_MSG_MON_SUBSCRIBE 15 127 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16 128 #define CEPH_MSG_AUTH 17 129 #define CEPH_MSG_AUTH_REPLY 18 130 #define CEPH_MSG_MON_GET_VERSION 19 131 #define CEPH_MSG_MON_GET_VERSION_REPLY 20 132 133 /* client <-> mds */ 134 #define CEPH_MSG_MDS_MAP 21 135 #define CEPH_MSG_FS_MAP_USER 103 136 137 #define CEPH_MSG_CLIENT_SESSION 22 138 #define CEPH_MSG_CLIENT_RECONNECT 23 139 140 #define CEPH_MSG_CLIENT_REQUEST 24 141 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25 142 #define CEPH_MSG_CLIENT_REPLY 26 143 #define CEPH_MSG_CLIENT_METRICS 29 144 #define CEPH_MSG_CLIENT_CAPS 0x310 145 #define CEPH_MSG_CLIENT_LEASE 0x311 146 #define CEPH_MSG_CLIENT_SNAP 0x312 147 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313 148 #define CEPH_MSG_CLIENT_QUOTA 0x314 149 150 /* pool ops */ 151 #define CEPH_MSG_POOLOP_REPLY 48 152 #define CEPH_MSG_POOLOP 49 153 154 /* mon commands */ 155 #define CEPH_MSG_MON_COMMAND 50 156 #define CEPH_MSG_MON_COMMAND_ACK 51 157 158 /* osd */ 159 #define CEPH_MSG_OSD_MAP 41 160 #define CEPH_MSG_OSD_OP 42 161 #define CEPH_MSG_OSD_OPREPLY 43 162 #define CEPH_MSG_WATCH_NOTIFY 44 163 #define CEPH_MSG_OSD_BACKOFF 61 164 165 166 /* watch-notify operations */ 167 enum { 168 CEPH_WATCH_EVENT_NOTIFY = 1, /* notifying watcher */ 169 CEPH_WATCH_EVENT_NOTIFY_COMPLETE = 2, /* notifier notified when done */ 170 CEPH_WATCH_EVENT_DISCONNECT = 3, /* we were disconnected */ 171 }; 172 173 174 struct ceph_mon_request_header { 175 __le64 have_version; 176 __le16 session_mon; 177 __le64 session_mon_tid; 178 } __attribute__ ((packed)); 179 180 struct ceph_mon_statfs { 181 struct ceph_mon_request_header monhdr; 182 struct ceph_fsid fsid; 183 __u8 contains_data_pool; 184 __le64 data_pool; 185 } __attribute__ ((packed)); 186 187 struct ceph_statfs { 188 __le64 kb, kb_used, kb_avail; 189 __le64 num_objects; 190 } __attribute__ ((packed)); 191 192 struct ceph_mon_statfs_reply { 193 struct ceph_fsid fsid; 194 __le64 version; 195 struct ceph_statfs st; 196 } __attribute__ ((packed)); 197 198 struct ceph_mon_command { 199 struct ceph_mon_request_header monhdr; 200 struct ceph_fsid fsid; 201 __le32 num_strs; /* always 1 */ 202 __le32 str_len; 203 char str[]; 204 } __attribute__ ((packed)); 205 206 struct ceph_osd_getmap { 207 struct ceph_mon_request_header monhdr; 208 struct ceph_fsid fsid; 209 __le32 start; 210 } __attribute__ ((packed)); 211 212 struct ceph_mds_getmap { 213 struct ceph_mon_request_header monhdr; 214 struct ceph_fsid fsid; 215 } __attribute__ ((packed)); 216 217 struct ceph_client_mount { 218 struct ceph_mon_request_header monhdr; 219 } __attribute__ ((packed)); 220 221 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ 222 223 struct ceph_mon_subscribe_item { 224 __le64 start; 225 __u8 flags; 226 } __attribute__ ((packed)); 227 228 struct ceph_mon_subscribe_ack { 229 __le32 duration; /* seconds */ 230 struct ceph_fsid fsid; 231 } __attribute__ ((packed)); 232 233 #define CEPH_FS_CLUSTER_ID_NONE -1 234 235 /* 236 * mdsmap flags 237 */ 238 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ 239 240 /* 241 * mds states 242 * > 0 -> in 243 * <= 0 -> out 244 */ 245 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 246 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 247 empty log. */ 248 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 249 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 250 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 251 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 252 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 253 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */ 254 255 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ 256 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed 257 operations (import, rename, etc.) */ 258 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ 259 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ 260 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ 261 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ 262 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ 263 264 extern const char *ceph_mds_state_name(int s); 265 266 267 /* 268 * metadata lock types. 269 * - these are bitmasks.. we can compose them 270 * - they also define the lock ordering by the MDS 271 * - a few of these are internal to the mds 272 */ 273 #define CEPH_LOCK_DVERSION 1 274 #define CEPH_LOCK_DN 2 275 #define CEPH_LOCK_ISNAP 16 276 #define CEPH_LOCK_IVERSION 32 /* mds internal */ 277 #define CEPH_LOCK_IFILE 64 278 #define CEPH_LOCK_IAUTH 128 279 #define CEPH_LOCK_ILINK 256 280 #define CEPH_LOCK_IDFT 512 /* dir frag tree */ 281 #define CEPH_LOCK_INEST 1024 /* mds internal */ 282 #define CEPH_LOCK_IXATTR 2048 283 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ 284 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ 285 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ 286 287 /* client_session ops */ 288 enum { 289 CEPH_SESSION_REQUEST_OPEN, 290 CEPH_SESSION_OPEN, 291 CEPH_SESSION_REQUEST_CLOSE, 292 CEPH_SESSION_CLOSE, 293 CEPH_SESSION_REQUEST_RENEWCAPS, 294 CEPH_SESSION_RENEWCAPS, 295 CEPH_SESSION_STALE, 296 CEPH_SESSION_RECALL_STATE, 297 CEPH_SESSION_FLUSHMSG, 298 CEPH_SESSION_FLUSHMSG_ACK, 299 CEPH_SESSION_FORCE_RO, 300 CEPH_SESSION_REJECT, 301 CEPH_SESSION_REQUEST_FLUSH_MDLOG, 302 }; 303 304 #define CEPH_SESSION_BLOCKLISTED (1 << 0) /* session blocklisted */ 305 306 extern const char *ceph_session_op_name(int op); 307 308 struct ceph_mds_session_head { 309 __le32 op; 310 __le64 seq; 311 struct ceph_timespec stamp; 312 __le32 max_caps, max_leases; 313 } __attribute__ ((packed)); 314 315 /* client_request */ 316 /* 317 * metadata ops. 318 * & 0x001000 -> write op 319 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 320 & & 0x100000 -> use weird ino/path trace 321 */ 322 #define CEPH_MDS_OP_WRITE 0x001000 323 enum { 324 CEPH_MDS_OP_LOOKUP = 0x00100, 325 CEPH_MDS_OP_GETATTR = 0x00101, 326 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 327 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 328 CEPH_MDS_OP_LOOKUPINO = 0x00104, 329 CEPH_MDS_OP_LOOKUPNAME = 0x00105, 330 CEPH_MDS_OP_GETVXATTR = 0x00106, 331 332 CEPH_MDS_OP_SETXATTR = 0x01105, 333 CEPH_MDS_OP_RMXATTR = 0x01106, 334 CEPH_MDS_OP_SETLAYOUT = 0x01107, 335 CEPH_MDS_OP_SETATTR = 0x01108, 336 CEPH_MDS_OP_SETFILELOCK= 0x01109, 337 CEPH_MDS_OP_GETFILELOCK= 0x00110, 338 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 339 340 CEPH_MDS_OP_MKNOD = 0x01201, 341 CEPH_MDS_OP_LINK = 0x01202, 342 CEPH_MDS_OP_UNLINK = 0x01203, 343 CEPH_MDS_OP_RENAME = 0x01204, 344 CEPH_MDS_OP_MKDIR = 0x01220, 345 CEPH_MDS_OP_RMDIR = 0x01221, 346 CEPH_MDS_OP_SYMLINK = 0x01222, 347 348 CEPH_MDS_OP_CREATE = 0x01301, 349 CEPH_MDS_OP_OPEN = 0x00302, 350 CEPH_MDS_OP_READDIR = 0x00305, 351 352 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 353 CEPH_MDS_OP_MKSNAP = 0x01400, 354 CEPH_MDS_OP_RMSNAP = 0x01401, 355 CEPH_MDS_OP_LSSNAP = 0x00402, 356 CEPH_MDS_OP_RENAMESNAP = 0x01403, 357 }; 358 359 extern const char *ceph_mds_op_name(int op); 360 361 362 #define CEPH_SETATTR_MODE 1 363 #define CEPH_SETATTR_UID 2 364 #define CEPH_SETATTR_GID 4 365 #define CEPH_SETATTR_MTIME 8 366 #define CEPH_SETATTR_ATIME 16 367 #define CEPH_SETATTR_SIZE 32 368 #define CEPH_SETATTR_CTIME 64 369 370 /* 371 * Ceph setxattr request flags. 372 */ 373 #define CEPH_XATTR_CREATE (1 << 0) 374 #define CEPH_XATTR_REPLACE (1 << 1) 375 #define CEPH_XATTR_REMOVE (1 << 31) 376 377 /* 378 * readdir request flags; 379 */ 380 #define CEPH_READDIR_REPLY_BITFLAGS (1<<0) 381 382 /* 383 * readdir reply flags. 384 */ 385 #define CEPH_READDIR_FRAG_END (1<<0) 386 #define CEPH_READDIR_FRAG_COMPLETE (1<<8) 387 #define CEPH_READDIR_HASH_ORDER (1<<9) 388 #define CEPH_READDIR_OFFSET_HASH (1<<10) 389 390 /* 391 * open request flags 392 */ 393 #define CEPH_O_RDONLY 00000000 394 #define CEPH_O_WRONLY 00000001 395 #define CEPH_O_RDWR 00000002 396 #define CEPH_O_CREAT 00000100 397 #define CEPH_O_EXCL 00000200 398 #define CEPH_O_TRUNC 00001000 399 #define CEPH_O_DIRECTORY 00200000 400 #define CEPH_O_NOFOLLOW 00400000 401 402 union ceph_mds_request_args { 403 struct { 404 __le32 mask; /* CEPH_CAP_* */ 405 } __attribute__ ((packed)) getattr; 406 struct { 407 __le32 mode; 408 __le32 uid; 409 __le32 gid; 410 struct ceph_timespec mtime; 411 struct ceph_timespec atime; 412 __le64 size, old_size; /* old_size needed by truncate */ 413 __le32 mask; /* CEPH_SETATTR_* */ 414 } __attribute__ ((packed)) setattr; 415 struct { 416 __le32 frag; /* which dir fragment */ 417 __le32 max_entries; /* how many dentries to grab */ 418 __le32 max_bytes; 419 __le16 flags; 420 __le32 offset_hash; 421 } __attribute__ ((packed)) readdir; 422 struct { 423 __le32 mode; 424 __le32 rdev; 425 } __attribute__ ((packed)) mknod; 426 struct { 427 __le32 mode; 428 } __attribute__ ((packed)) mkdir; 429 struct { 430 __le32 flags; 431 __le32 mode; 432 __le32 stripe_unit; /* layout for newly created file */ 433 __le32 stripe_count; /* ... */ 434 __le32 object_size; 435 __le32 file_replication; 436 __le32 mask; /* CEPH_CAP_* */ 437 __le32 old_size; 438 } __attribute__ ((packed)) open; 439 struct { 440 __le32 flags; 441 __le32 osdmap_epoch; /* used for setting file/dir layouts */ 442 } __attribute__ ((packed)) setxattr; 443 struct { 444 struct ceph_file_layout_legacy layout; 445 } __attribute__ ((packed)) setlayout; 446 struct { 447 __u8 rule; /* currently fcntl or flock */ 448 __u8 type; /* shared, exclusive, remove*/ 449 __le64 owner; /* owner of the lock */ 450 __le64 pid; /* process id requesting the lock */ 451 __le64 start; /* initial location to lock */ 452 __le64 length; /* num bytes to lock from start */ 453 __u8 wait; /* will caller wait for lock to become available? */ 454 } __attribute__ ((packed)) filelock_change; 455 struct { 456 __le32 mask; /* CEPH_CAP_* */ 457 __le64 snapid; 458 __le64 parent; 459 __le32 hash; 460 } __attribute__ ((packed)) lookupino; 461 } __attribute__ ((packed)); 462 463 union ceph_mds_request_args_ext { 464 union ceph_mds_request_args old; 465 struct { 466 __le32 mode; 467 __le32 uid; 468 __le32 gid; 469 struct ceph_timespec mtime; 470 struct ceph_timespec atime; 471 __le64 size, old_size; /* old_size needed by truncate */ 472 __le32 mask; /* CEPH_SETATTR_* */ 473 struct ceph_timespec btime; 474 } __attribute__ ((packed)) setattr_ext; 475 }; 476 477 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 478 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 479 #define CEPH_MDS_FLAG_ASYNC 4 /* request is asynchronous */ 480 481 struct ceph_mds_request_head_old { 482 __le64 oldest_client_tid; 483 __le32 mdsmap_epoch; /* on client */ 484 __le32 flags; /* CEPH_MDS_FLAG_* */ 485 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 486 __le16 num_releases; /* # include cap/lease release records */ 487 __le32 op; /* mds op code */ 488 __le32 caller_uid, caller_gid; 489 __le64 ino; /* use this ino for openc, mkdir, mknod, 490 etc. (if replaying) */ 491 union ceph_mds_request_args args; 492 } __attribute__ ((packed)); 493 494 #define CEPH_MDS_REQUEST_HEAD_VERSION 1 495 496 struct ceph_mds_request_head { 497 __le16 version; /* struct version */ 498 __le64 oldest_client_tid; 499 __le32 mdsmap_epoch; /* on client */ 500 __le32 flags; /* CEPH_MDS_FLAG_* */ 501 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 502 __le16 num_releases; /* # include cap/lease release records */ 503 __le32 op; /* mds op code */ 504 __le32 caller_uid, caller_gid; 505 __le64 ino; /* use this ino for openc, mkdir, mknod, 506 etc. (if replaying) */ 507 union ceph_mds_request_args_ext args; 508 } __attribute__ ((packed)); 509 510 /* cap/lease release record */ 511 struct ceph_mds_request_release { 512 __le64 ino, cap_id; /* ino and unique cap id */ 513 __le32 caps, wanted; /* new issued, wanted */ 514 __le32 seq, issue_seq, mseq; 515 __le32 dname_seq; /* if releasing a dentry lease, a */ 516 __le32 dname_len; /* string follows. */ 517 } __attribute__ ((packed)); 518 519 /* client reply */ 520 struct ceph_mds_reply_head { 521 __le32 op; 522 __le32 result; 523 __le32 mdsmap_epoch; 524 __u8 safe; /* true if committed to disk */ 525 __u8 is_dentry, is_target; /* true if dentry, target inode records 526 are included with reply */ 527 } __attribute__ ((packed)); 528 529 /* one for each node split */ 530 struct ceph_frag_tree_split { 531 __le32 frag; /* this frag splits... */ 532 __le32 by; /* ...by this many bits */ 533 } __attribute__ ((packed)); 534 535 struct ceph_frag_tree_head { 536 __le32 nsplits; /* num ceph_frag_tree_split records */ 537 struct ceph_frag_tree_split splits[]; 538 } __attribute__ ((packed)); 539 540 /* capability issue, for bundling with mds reply */ 541 struct ceph_mds_reply_cap { 542 __le32 caps, wanted; /* caps issued, wanted */ 543 __le64 cap_id; 544 __le32 seq, mseq; 545 __le64 realm; /* snap realm */ 546 __u8 flags; /* CEPH_CAP_FLAG_* */ 547 } __attribute__ ((packed)); 548 549 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 550 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 551 552 /* inode record, for bundling with mds reply */ 553 struct ceph_mds_reply_inode { 554 __le64 ino; 555 __le64 snapid; 556 __le32 rdev; 557 __le64 version; /* inode version */ 558 __le64 xattr_version; /* version for xattr blob */ 559 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 560 struct ceph_file_layout_legacy layout; 561 struct ceph_timespec ctime, mtime, atime; 562 __le32 time_warp_seq; 563 __le64 size, max_size, truncate_size; 564 __le32 truncate_seq; 565 __le32 mode, uid, gid; 566 __le32 nlink; 567 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 568 struct ceph_timespec rctime; 569 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 570 } __attribute__ ((packed)); 571 /* followed by frag array, symlink string, dir layout, xattr blob */ 572 573 /* reply_lease follows dname, and reply_inode */ 574 struct ceph_mds_reply_lease { 575 __le16 mask; /* lease type(s) */ 576 __le32 duration_ms; /* lease duration */ 577 __le32 seq; 578 } __attribute__ ((packed)); 579 580 #define CEPH_LEASE_VALID (1 | 2) /* old and new bit values */ 581 #define CEPH_LEASE_PRIMARY_LINK 4 /* primary linkage */ 582 583 struct ceph_mds_reply_dirfrag { 584 __le32 frag; /* fragment */ 585 __le32 auth; /* auth mds, if this is a delegation point */ 586 __le32 ndist; /* number of mds' this is replicated on */ 587 __le32 dist[]; 588 } __attribute__ ((packed)); 589 590 #define CEPH_LOCK_FCNTL 1 591 #define CEPH_LOCK_FLOCK 2 592 #define CEPH_LOCK_FCNTL_INTR 3 593 #define CEPH_LOCK_FLOCK_INTR 4 594 595 596 #define CEPH_LOCK_SHARED 1 597 #define CEPH_LOCK_EXCL 2 598 #define CEPH_LOCK_UNLOCK 4 599 600 struct ceph_filelock { 601 __le64 start;/* file offset to start lock at */ 602 __le64 length; /* num bytes to lock; 0 for all following start */ 603 __le64 client; /* which client holds the lock */ 604 __le64 owner; /* owner the lock */ 605 __le64 pid; /* process id holding the lock on the client */ 606 __u8 type; /* shared lock, exclusive lock, or unlock */ 607 } __attribute__ ((packed)); 608 609 610 /* file access modes */ 611 #define CEPH_FILE_MODE_PIN 0 612 #define CEPH_FILE_MODE_RD 1 613 #define CEPH_FILE_MODE_WR 2 614 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 615 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 616 #define CEPH_FILE_MODE_BITS 4 617 #define CEPH_FILE_MODE_MASK ((1 << CEPH_FILE_MODE_BITS) - 1) 618 619 int ceph_flags_to_mode(int flags); 620 621 #define CEPH_INLINE_NONE ((__u64)-1) 622 623 /* capability bits */ 624 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 625 626 /* generic cap bits */ 627 #define CEPH_CAP_GSHARED 1 /* client can reads */ 628 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 629 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 630 #define CEPH_CAP_GRD 8 /* (file) client can read */ 631 #define CEPH_CAP_GWR 16 /* (file) client can write */ 632 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 633 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 634 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 635 636 #define CEPH_CAP_SIMPLE_BITS 2 637 #define CEPH_CAP_FILE_BITS 8 638 639 /* per-lock shift */ 640 #define CEPH_CAP_SAUTH 2 641 #define CEPH_CAP_SLINK 4 642 #define CEPH_CAP_SXATTR 6 643 #define CEPH_CAP_SFILE 8 644 #define CEPH_CAP_SFLOCK 20 645 646 #define CEPH_CAP_BITS 22 647 648 /* composed values */ 649 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 650 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 651 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 652 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 653 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 654 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 655 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 656 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 657 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 658 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 659 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 660 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 661 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 662 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 663 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 664 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 665 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 666 667 668 /* cap masks (for getattr) */ 669 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 670 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 671 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 672 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 673 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 674 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 675 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 676 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 677 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 678 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 679 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 680 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 681 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 682 CEPH_CAP_AUTH_SHARED | \ 683 CEPH_CAP_LINK_SHARED | \ 684 CEPH_CAP_FILE_SHARED | \ 685 CEPH_CAP_XATTR_SHARED) 686 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 687 CEPH_CAP_FILE_RD) 688 #define CEPH_STAT_RSTAT CEPH_CAP_FILE_WREXTEND 689 690 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 691 CEPH_CAP_LINK_SHARED | \ 692 CEPH_CAP_XATTR_SHARED | \ 693 CEPH_CAP_FILE_SHARED) 694 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 695 CEPH_CAP_FILE_CACHE) 696 697 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 698 CEPH_CAP_LINK_EXCL | \ 699 CEPH_CAP_XATTR_EXCL | \ 700 CEPH_CAP_FILE_EXCL) 701 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 702 CEPH_CAP_FILE_SHARED) 703 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 704 CEPH_CAP_FILE_EXCL) 705 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 706 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 707 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 708 CEPH_CAP_PIN) 709 #define CEPH_CAP_ALL_FILE (CEPH_CAP_PIN | CEPH_CAP_ANY_SHARED | \ 710 CEPH_CAP_AUTH_EXCL | CEPH_CAP_XATTR_EXCL | \ 711 CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR) 712 713 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 714 CEPH_LOCK_IXATTR) 715 716 /* cap masks async dir operations */ 717 #define CEPH_CAP_DIR_CREATE CEPH_CAP_FILE_CACHE 718 #define CEPH_CAP_DIR_UNLINK CEPH_CAP_FILE_RD 719 #define CEPH_CAP_ANY_DIR_OPS (CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | \ 720 CEPH_CAP_FILE_WREXTEND | CEPH_CAP_FILE_LAZYIO) 721 722 int ceph_caps_for_mode(int mode); 723 724 enum { 725 CEPH_CAP_OP_GRANT, /* mds->client grant */ 726 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 727 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 728 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 729 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 730 CEPH_CAP_OP_UPDATE, /* client->mds update */ 731 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 732 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 733 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 734 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 735 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 736 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 737 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 738 }; 739 740 extern const char *ceph_cap_op_name(int op); 741 742 /* flags field in client cap messages (version >= 10) */ 743 #define CEPH_CLIENT_CAPS_SYNC (1<<0) 744 #define CEPH_CLIENT_CAPS_NO_CAPSNAP (1<<1) 745 #define CEPH_CLIENT_CAPS_PENDING_CAPSNAP (1<<2) 746 747 /* 748 * caps message, used for capability callbacks, acks, requests, etc. 749 */ 750 struct ceph_mds_caps { 751 __le32 op; /* CEPH_CAP_OP_* */ 752 __le64 ino, realm; 753 __le64 cap_id; 754 __le32 seq, issue_seq; 755 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 756 __le32 migrate_seq; 757 __le64 snap_follows; 758 __le32 snap_trace_len; 759 760 /* authlock */ 761 __le32 uid, gid, mode; 762 763 /* linklock */ 764 __le32 nlink; 765 766 /* xattrlock */ 767 __le32 xattr_len; 768 __le64 xattr_version; 769 770 /* filelock */ 771 __le64 size, max_size, truncate_size; 772 __le32 truncate_seq; 773 struct ceph_timespec mtime, atime, ctime; 774 struct ceph_file_layout_legacy layout; 775 __le32 time_warp_seq; 776 } __attribute__ ((packed)); 777 778 struct ceph_mds_cap_peer { 779 __le64 cap_id; 780 __le32 seq; 781 __le32 mseq; 782 __le32 mds; 783 __u8 flags; 784 } __attribute__ ((packed)); 785 786 /* cap release msg head */ 787 struct ceph_mds_cap_release { 788 __le32 num; /* number of cap_items that follow */ 789 } __attribute__ ((packed)); 790 791 struct ceph_mds_cap_item { 792 __le64 ino; 793 __le64 cap_id; 794 __le32 migrate_seq, seq; 795 } __attribute__ ((packed)); 796 797 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 798 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 799 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 800 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 801 802 extern const char *ceph_lease_op_name(int o); 803 804 /* lease msg header */ 805 struct ceph_mds_lease { 806 __u8 action; /* CEPH_MDS_LEASE_* */ 807 __le16 mask; /* which lease */ 808 __le64 ino; 809 __le64 first, last; /* snap range */ 810 __le32 seq; 811 __le32 duration_ms; /* duration of renewal */ 812 } __attribute__ ((packed)); 813 /* followed by a __le32+string for dname */ 814 815 /* client reconnect */ 816 struct ceph_mds_cap_reconnect { 817 __le64 cap_id; 818 __le32 wanted; 819 __le32 issued; 820 __le64 snaprealm; 821 __le64 pathbase; /* base ino for our path to this ino */ 822 __le32 flock_len; /* size of flock state blob, if any */ 823 } __attribute__ ((packed)); 824 /* followed by flock blob */ 825 826 struct ceph_mds_cap_reconnect_v1 { 827 __le64 cap_id; 828 __le32 wanted; 829 __le32 issued; 830 __le64 size; 831 struct ceph_timespec mtime, atime; 832 __le64 snaprealm; 833 __le64 pathbase; /* base ino for our path to this ino */ 834 } __attribute__ ((packed)); 835 836 struct ceph_mds_snaprealm_reconnect { 837 __le64 ino; /* snap realm base */ 838 __le64 seq; /* snap seq for this snap realm */ 839 __le64 parent; /* parent realm */ 840 } __attribute__ ((packed)); 841 842 /* 843 * snaps 844 */ 845 enum { 846 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 847 CEPH_SNAP_OP_CREATE, 848 CEPH_SNAP_OP_DESTROY, 849 CEPH_SNAP_OP_SPLIT, 850 }; 851 852 extern const char *ceph_snap_op_name(int o); 853 854 /* snap msg header */ 855 struct ceph_mds_snap_head { 856 __le32 op; /* CEPH_SNAP_OP_* */ 857 __le64 split; /* ino to split off, if any */ 858 __le32 num_split_inos; /* # inos belonging to new child realm */ 859 __le32 num_split_realms; /* # child realms udner new child realm */ 860 __le32 trace_len; /* size of snap trace blob */ 861 } __attribute__ ((packed)); 862 /* followed by split ino list, then split realms, then the trace blob */ 863 864 /* 865 * encode info about a snaprealm, as viewed by a client 866 */ 867 struct ceph_mds_snap_realm { 868 __le64 ino; /* ino */ 869 __le64 created; /* snap: when created */ 870 __le64 parent; /* ino: parent realm */ 871 __le64 parent_since; /* snap: same parent since */ 872 __le64 seq; /* snap: version */ 873 __le32 num_snaps; 874 __le32 num_prior_parent_snaps; 875 } __attribute__ ((packed)); 876 /* followed by my snap list, then prior parent snap list */ 877 878 /* 879 * quotas 880 */ 881 struct ceph_mds_quota { 882 __le64 ino; /* ino */ 883 struct ceph_timespec rctime; 884 __le64 rbytes; /* dir stats */ 885 __le64 rfiles; 886 __le64 rsubdirs; 887 __u8 struct_v; /* compat */ 888 __u8 struct_compat; 889 __le32 struct_len; 890 __le64 max_bytes; /* quota max. bytes */ 891 __le64 max_files; /* quota max. files */ 892 } __attribute__ ((packed)); 893 894 #endif 895