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_OSD_PROTOCOL 8 /* cluster internal */ 25 #define CEPH_MDS_PROTOCOL 12 /* cluster internal */ 26 #define CEPH_MON_PROTOCOL 5 /* cluster internal */ 27 #define CEPH_OSDC_PROTOCOL 24 /* server/client */ 28 #define CEPH_MDSC_PROTOCOL 32 /* server/client */ 29 #define CEPH_MONC_PROTOCOL 15 /* server/client */ 30 31 32 #define CEPH_INO_ROOT 1 33 #define CEPH_INO_CEPH 2 /* hidden .ceph dir */ 34 35 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */ 36 #define CEPH_MAX_MON 31 37 38 /* 39 * ceph_file_layout - describe data layout for a file/inode 40 */ 41 struct ceph_file_layout { 42 /* file -> object mapping */ 43 __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple 44 of page size. */ 45 __le32 fl_stripe_count; /* over this many objects */ 46 __le32 fl_object_size; /* until objects are this big, then move to 47 new objects */ 48 __le32 fl_cas_hash; /* UNUSED. 0 = none; 1 = sha256 */ 49 50 /* pg -> disk layout */ 51 __le32 fl_object_stripe_unit; /* UNUSED. for per-object parity, if any */ 52 53 /* object -> pg layout */ 54 __le32 fl_unused; /* unused; used to be preferred primary (-1) */ 55 __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */ 56 } __attribute__ ((packed)); 57 58 #define CEPH_MIN_STRIPE_UNIT 65536 59 60 int ceph_file_layout_is_valid(const struct ceph_file_layout *layout); 61 62 struct ceph_dir_layout { 63 __u8 dl_dir_hash; /* see ceph_hash.h for ids */ 64 __u8 dl_unused1; 65 __u16 dl_unused2; 66 __u32 dl_unused3; 67 } __attribute__ ((packed)); 68 69 /* crypto algorithms */ 70 #define CEPH_CRYPTO_NONE 0x0 71 #define CEPH_CRYPTO_AES 0x1 72 73 #define CEPH_AES_IV "cephsageyudagreg" 74 75 /* security/authentication protocols */ 76 #define CEPH_AUTH_UNKNOWN 0x0 77 #define CEPH_AUTH_NONE 0x1 78 #define CEPH_AUTH_CEPHX 0x2 79 80 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1) 81 82 83 /********************************************* 84 * message layer 85 */ 86 87 /* 88 * message types 89 */ 90 91 /* misc */ 92 #define CEPH_MSG_SHUTDOWN 1 93 #define CEPH_MSG_PING 2 94 95 /* client <-> monitor */ 96 #define CEPH_MSG_MON_MAP 4 97 #define CEPH_MSG_MON_GET_MAP 5 98 #define CEPH_MSG_STATFS 13 99 #define CEPH_MSG_STATFS_REPLY 14 100 #define CEPH_MSG_MON_SUBSCRIBE 15 101 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16 102 #define CEPH_MSG_AUTH 17 103 #define CEPH_MSG_AUTH_REPLY 18 104 105 /* client <-> mds */ 106 #define CEPH_MSG_MDS_MAP 21 107 108 #define CEPH_MSG_CLIENT_SESSION 22 109 #define CEPH_MSG_CLIENT_RECONNECT 23 110 111 #define CEPH_MSG_CLIENT_REQUEST 24 112 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25 113 #define CEPH_MSG_CLIENT_REPLY 26 114 #define CEPH_MSG_CLIENT_CAPS 0x310 115 #define CEPH_MSG_CLIENT_LEASE 0x311 116 #define CEPH_MSG_CLIENT_SNAP 0x312 117 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313 118 119 /* pool ops */ 120 #define CEPH_MSG_POOLOP_REPLY 48 121 #define CEPH_MSG_POOLOP 49 122 123 124 /* osd */ 125 #define CEPH_MSG_OSD_MAP 41 126 #define CEPH_MSG_OSD_OP 42 127 #define CEPH_MSG_OSD_OPREPLY 43 128 #define CEPH_MSG_WATCH_NOTIFY 44 129 130 131 /* watch-notify operations */ 132 enum { 133 WATCH_NOTIFY = 1, /* notifying watcher */ 134 WATCH_NOTIFY_COMPLETE = 2, /* notifier notified when done */ 135 }; 136 137 138 /* pool operations */ 139 enum { 140 POOL_OP_CREATE = 0x01, 141 POOL_OP_DELETE = 0x02, 142 POOL_OP_AUID_CHANGE = 0x03, 143 POOL_OP_CREATE_SNAP = 0x11, 144 POOL_OP_DELETE_SNAP = 0x12, 145 POOL_OP_CREATE_UNMANAGED_SNAP = 0x21, 146 POOL_OP_DELETE_UNMANAGED_SNAP = 0x22, 147 }; 148 149 struct ceph_mon_request_header { 150 __le64 have_version; 151 __le16 session_mon; 152 __le64 session_mon_tid; 153 } __attribute__ ((packed)); 154 155 struct ceph_mon_statfs { 156 struct ceph_mon_request_header monhdr; 157 struct ceph_fsid fsid; 158 } __attribute__ ((packed)); 159 160 struct ceph_statfs { 161 __le64 kb, kb_used, kb_avail; 162 __le64 num_objects; 163 } __attribute__ ((packed)); 164 165 struct ceph_mon_statfs_reply { 166 struct ceph_fsid fsid; 167 __le64 version; 168 struct ceph_statfs st; 169 } __attribute__ ((packed)); 170 171 const char *ceph_pool_op_name(int op); 172 173 struct ceph_mon_poolop { 174 struct ceph_mon_request_header monhdr; 175 struct ceph_fsid fsid; 176 __le32 pool; 177 __le32 op; 178 __le64 auid; 179 __le64 snapid; 180 __le32 name_len; 181 } __attribute__ ((packed)); 182 183 struct ceph_mon_poolop_reply { 184 struct ceph_mon_request_header monhdr; 185 struct ceph_fsid fsid; 186 __le32 reply_code; 187 __le32 epoch; 188 char has_data; 189 char data[0]; 190 } __attribute__ ((packed)); 191 192 struct ceph_mon_unmanaged_snap { 193 __le64 snapid; 194 } __attribute__ ((packed)); 195 196 struct ceph_osd_getmap { 197 struct ceph_mon_request_header monhdr; 198 struct ceph_fsid fsid; 199 __le32 start; 200 } __attribute__ ((packed)); 201 202 struct ceph_mds_getmap { 203 struct ceph_mon_request_header monhdr; 204 struct ceph_fsid fsid; 205 } __attribute__ ((packed)); 206 207 struct ceph_client_mount { 208 struct ceph_mon_request_header monhdr; 209 } __attribute__ ((packed)); 210 211 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ 212 213 struct ceph_mon_subscribe_item { 214 __le64 have_version; __le64 have; 215 __u8 onetime; 216 } __attribute__ ((packed)); 217 218 struct ceph_mon_subscribe_ack { 219 __le32 duration; /* seconds */ 220 struct ceph_fsid fsid; 221 } __attribute__ ((packed)); 222 223 /* 224 * mds states 225 * > 0 -> in 226 * <= 0 -> out 227 */ 228 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 229 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 230 empty log. */ 231 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 232 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 233 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 234 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 235 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 236 237 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ 238 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed 239 operations (import, rename, etc.) */ 240 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ 241 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ 242 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ 243 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ 244 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ 245 246 extern const char *ceph_mds_state_name(int s); 247 248 249 /* 250 * metadata lock types. 251 * - these are bitmasks.. we can compose them 252 * - they also define the lock ordering by the MDS 253 * - a few of these are internal to the mds 254 */ 255 #define CEPH_LOCK_DVERSION 1 256 #define CEPH_LOCK_DN 2 257 #define CEPH_LOCK_ISNAP 16 258 #define CEPH_LOCK_IVERSION 32 /* mds internal */ 259 #define CEPH_LOCK_IFILE 64 260 #define CEPH_LOCK_IAUTH 128 261 #define CEPH_LOCK_ILINK 256 262 #define CEPH_LOCK_IDFT 512 /* dir frag tree */ 263 #define CEPH_LOCK_INEST 1024 /* mds internal */ 264 #define CEPH_LOCK_IXATTR 2048 265 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ 266 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ 267 268 /* client_session ops */ 269 enum { 270 CEPH_SESSION_REQUEST_OPEN, 271 CEPH_SESSION_OPEN, 272 CEPH_SESSION_REQUEST_CLOSE, 273 CEPH_SESSION_CLOSE, 274 CEPH_SESSION_REQUEST_RENEWCAPS, 275 CEPH_SESSION_RENEWCAPS, 276 CEPH_SESSION_STALE, 277 CEPH_SESSION_RECALL_STATE, 278 }; 279 280 extern const char *ceph_session_op_name(int op); 281 282 struct ceph_mds_session_head { 283 __le32 op; 284 __le64 seq; 285 struct ceph_timespec stamp; 286 __le32 max_caps, max_leases; 287 } __attribute__ ((packed)); 288 289 /* client_request */ 290 /* 291 * metadata ops. 292 * & 0x001000 -> write op 293 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 294 & & 0x100000 -> use weird ino/path trace 295 */ 296 #define CEPH_MDS_OP_WRITE 0x001000 297 enum { 298 CEPH_MDS_OP_LOOKUP = 0x00100, 299 CEPH_MDS_OP_GETATTR = 0x00101, 300 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 301 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 302 CEPH_MDS_OP_LOOKUPINO = 0x00104, 303 304 CEPH_MDS_OP_SETXATTR = 0x01105, 305 CEPH_MDS_OP_RMXATTR = 0x01106, 306 CEPH_MDS_OP_SETLAYOUT = 0x01107, 307 CEPH_MDS_OP_SETATTR = 0x01108, 308 CEPH_MDS_OP_SETFILELOCK= 0x01109, 309 CEPH_MDS_OP_GETFILELOCK= 0x00110, 310 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 311 312 CEPH_MDS_OP_MKNOD = 0x01201, 313 CEPH_MDS_OP_LINK = 0x01202, 314 CEPH_MDS_OP_UNLINK = 0x01203, 315 CEPH_MDS_OP_RENAME = 0x01204, 316 CEPH_MDS_OP_MKDIR = 0x01220, 317 CEPH_MDS_OP_RMDIR = 0x01221, 318 CEPH_MDS_OP_SYMLINK = 0x01222, 319 320 CEPH_MDS_OP_CREATE = 0x01301, 321 CEPH_MDS_OP_OPEN = 0x00302, 322 CEPH_MDS_OP_READDIR = 0x00305, 323 324 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 325 CEPH_MDS_OP_MKSNAP = 0x01400, 326 CEPH_MDS_OP_RMSNAP = 0x01401, 327 CEPH_MDS_OP_LSSNAP = 0x00402, 328 }; 329 330 extern const char *ceph_mds_op_name(int op); 331 332 333 #define CEPH_SETATTR_MODE 1 334 #define CEPH_SETATTR_UID 2 335 #define CEPH_SETATTR_GID 4 336 #define CEPH_SETATTR_MTIME 8 337 #define CEPH_SETATTR_ATIME 16 338 #define CEPH_SETATTR_SIZE 32 339 #define CEPH_SETATTR_CTIME 64 340 341 union ceph_mds_request_args { 342 struct { 343 __le32 mask; /* CEPH_CAP_* */ 344 } __attribute__ ((packed)) getattr; 345 struct { 346 __le32 mode; 347 __le32 uid; 348 __le32 gid; 349 struct ceph_timespec mtime; 350 struct ceph_timespec atime; 351 __le64 size, old_size; /* old_size needed by truncate */ 352 __le32 mask; /* CEPH_SETATTR_* */ 353 } __attribute__ ((packed)) setattr; 354 struct { 355 __le32 frag; /* which dir fragment */ 356 __le32 max_entries; /* how many dentries to grab */ 357 __le32 max_bytes; 358 } __attribute__ ((packed)) readdir; 359 struct { 360 __le32 mode; 361 __le32 rdev; 362 } __attribute__ ((packed)) mknod; 363 struct { 364 __le32 mode; 365 } __attribute__ ((packed)) mkdir; 366 struct { 367 __le32 flags; 368 __le32 mode; 369 __le32 stripe_unit; /* layout for newly created file */ 370 __le32 stripe_count; /* ... */ 371 __le32 object_size; 372 __le32 file_replication; 373 __le32 unused; /* used to be preferred osd */ 374 } __attribute__ ((packed)) open; 375 struct { 376 __le32 flags; 377 } __attribute__ ((packed)) setxattr; 378 struct { 379 struct ceph_file_layout layout; 380 } __attribute__ ((packed)) setlayout; 381 struct { 382 __u8 rule; /* currently fcntl or flock */ 383 __u8 type; /* shared, exclusive, remove*/ 384 __le64 pid; /* process id requesting the lock */ 385 __le64 pid_namespace; 386 __le64 start; /* initial location to lock */ 387 __le64 length; /* num bytes to lock from start */ 388 __u8 wait; /* will caller wait for lock to become available? */ 389 } __attribute__ ((packed)) filelock_change; 390 } __attribute__ ((packed)); 391 392 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 393 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 394 395 struct ceph_mds_request_head { 396 __le64 oldest_client_tid; 397 __le32 mdsmap_epoch; /* on client */ 398 __le32 flags; /* CEPH_MDS_FLAG_* */ 399 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 400 __le16 num_releases; /* # include cap/lease release records */ 401 __le32 op; /* mds op code */ 402 __le32 caller_uid, caller_gid; 403 __le64 ino; /* use this ino for openc, mkdir, mknod, 404 etc. (if replaying) */ 405 union ceph_mds_request_args args; 406 } __attribute__ ((packed)); 407 408 /* cap/lease release record */ 409 struct ceph_mds_request_release { 410 __le64 ino, cap_id; /* ino and unique cap id */ 411 __le32 caps, wanted; /* new issued, wanted */ 412 __le32 seq, issue_seq, mseq; 413 __le32 dname_seq; /* if releasing a dentry lease, a */ 414 __le32 dname_len; /* string follows. */ 415 } __attribute__ ((packed)); 416 417 /* client reply */ 418 struct ceph_mds_reply_head { 419 __le32 op; 420 __le32 result; 421 __le32 mdsmap_epoch; 422 __u8 safe; /* true if committed to disk */ 423 __u8 is_dentry, is_target; /* true if dentry, target inode records 424 are included with reply */ 425 } __attribute__ ((packed)); 426 427 /* one for each node split */ 428 struct ceph_frag_tree_split { 429 __le32 frag; /* this frag splits... */ 430 __le32 by; /* ...by this many bits */ 431 } __attribute__ ((packed)); 432 433 struct ceph_frag_tree_head { 434 __le32 nsplits; /* num ceph_frag_tree_split records */ 435 struct ceph_frag_tree_split splits[]; 436 } __attribute__ ((packed)); 437 438 /* capability issue, for bundling with mds reply */ 439 struct ceph_mds_reply_cap { 440 __le32 caps, wanted; /* caps issued, wanted */ 441 __le64 cap_id; 442 __le32 seq, mseq; 443 __le64 realm; /* snap realm */ 444 __u8 flags; /* CEPH_CAP_FLAG_* */ 445 } __attribute__ ((packed)); 446 447 #define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */ 448 449 /* inode record, for bundling with mds reply */ 450 struct ceph_mds_reply_inode { 451 __le64 ino; 452 __le64 snapid; 453 __le32 rdev; 454 __le64 version; /* inode version */ 455 __le64 xattr_version; /* version for xattr blob */ 456 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 457 struct ceph_file_layout layout; 458 struct ceph_timespec ctime, mtime, atime; 459 __le32 time_warp_seq; 460 __le64 size, max_size, truncate_size; 461 __le32 truncate_seq; 462 __le32 mode, uid, gid; 463 __le32 nlink; 464 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 465 struct ceph_timespec rctime; 466 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 467 } __attribute__ ((packed)); 468 /* followed by frag array, symlink string, dir layout, xattr blob */ 469 470 /* reply_lease follows dname, and reply_inode */ 471 struct ceph_mds_reply_lease { 472 __le16 mask; /* lease type(s) */ 473 __le32 duration_ms; /* lease duration */ 474 __le32 seq; 475 } __attribute__ ((packed)); 476 477 struct ceph_mds_reply_dirfrag { 478 __le32 frag; /* fragment */ 479 __le32 auth; /* auth mds, if this is a delegation point */ 480 __le32 ndist; /* number of mds' this is replicated on */ 481 __le32 dist[]; 482 } __attribute__ ((packed)); 483 484 #define CEPH_LOCK_FCNTL 1 485 #define CEPH_LOCK_FLOCK 2 486 487 #define CEPH_LOCK_SHARED 1 488 #define CEPH_LOCK_EXCL 2 489 #define CEPH_LOCK_UNLOCK 4 490 491 struct ceph_filelock { 492 __le64 start;/* file offset to start lock at */ 493 __le64 length; /* num bytes to lock; 0 for all following start */ 494 __le64 client; /* which client holds the lock */ 495 __le64 pid; /* process id holding the lock on the client */ 496 __le64 pid_namespace; 497 __u8 type; /* shared lock, exclusive lock, or unlock */ 498 } __attribute__ ((packed)); 499 500 501 /* file access modes */ 502 #define CEPH_FILE_MODE_PIN 0 503 #define CEPH_FILE_MODE_RD 1 504 #define CEPH_FILE_MODE_WR 2 505 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 506 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 507 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ 508 509 int ceph_flags_to_mode(int flags); 510 511 512 /* capability bits */ 513 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 514 515 /* generic cap bits */ 516 #define CEPH_CAP_GSHARED 1 /* client can reads */ 517 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 518 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 519 #define CEPH_CAP_GRD 8 /* (file) client can read */ 520 #define CEPH_CAP_GWR 16 /* (file) client can write */ 521 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 522 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 523 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 524 525 /* per-lock shift */ 526 #define CEPH_CAP_SAUTH 2 527 #define CEPH_CAP_SLINK 4 528 #define CEPH_CAP_SXATTR 6 529 #define CEPH_CAP_SFILE 8 530 #define CEPH_CAP_SFLOCK 20 531 532 #define CEPH_CAP_BITS 22 533 534 /* composed values */ 535 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 536 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 537 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 538 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 539 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 540 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 541 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 542 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 543 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 544 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 545 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 546 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 547 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 548 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 549 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 550 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 551 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 552 553 554 /* cap masks (for getattr) */ 555 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 556 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 557 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 558 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 559 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 560 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 561 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 562 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 563 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 564 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 565 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 566 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 567 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 568 CEPH_CAP_AUTH_SHARED | \ 569 CEPH_CAP_LINK_SHARED | \ 570 CEPH_CAP_FILE_SHARED | \ 571 CEPH_CAP_XATTR_SHARED) 572 573 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 574 CEPH_CAP_LINK_SHARED | \ 575 CEPH_CAP_XATTR_SHARED | \ 576 CEPH_CAP_FILE_SHARED) 577 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 578 CEPH_CAP_FILE_CACHE) 579 580 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 581 CEPH_CAP_LINK_EXCL | \ 582 CEPH_CAP_XATTR_EXCL | \ 583 CEPH_CAP_FILE_EXCL) 584 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 585 CEPH_CAP_FILE_EXCL) 586 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 587 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 588 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 589 CEPH_CAP_PIN) 590 591 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 592 CEPH_LOCK_IXATTR) 593 594 int ceph_caps_for_mode(int mode); 595 596 enum { 597 CEPH_CAP_OP_GRANT, /* mds->client grant */ 598 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 599 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 600 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 601 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 602 CEPH_CAP_OP_UPDATE, /* client->mds update */ 603 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 604 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 605 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 606 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 607 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 608 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 609 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 610 }; 611 612 extern const char *ceph_cap_op_name(int op); 613 614 /* 615 * caps message, used for capability callbacks, acks, requests, etc. 616 */ 617 struct ceph_mds_caps { 618 __le32 op; /* CEPH_CAP_OP_* */ 619 __le64 ino, realm; 620 __le64 cap_id; 621 __le32 seq, issue_seq; 622 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 623 __le32 migrate_seq; 624 __le64 snap_follows; 625 __le32 snap_trace_len; 626 627 /* authlock */ 628 __le32 uid, gid, mode; 629 630 /* linklock */ 631 __le32 nlink; 632 633 /* xattrlock */ 634 __le32 xattr_len; 635 __le64 xattr_version; 636 637 /* filelock */ 638 __le64 size, max_size, truncate_size; 639 __le32 truncate_seq; 640 struct ceph_timespec mtime, atime, ctime; 641 struct ceph_file_layout layout; 642 __le32 time_warp_seq; 643 } __attribute__ ((packed)); 644 645 /* cap release msg head */ 646 struct ceph_mds_cap_release { 647 __le32 num; /* number of cap_items that follow */ 648 } __attribute__ ((packed)); 649 650 struct ceph_mds_cap_item { 651 __le64 ino; 652 __le64 cap_id; 653 __le32 migrate_seq, seq; 654 } __attribute__ ((packed)); 655 656 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 657 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 658 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 659 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 660 661 extern const char *ceph_lease_op_name(int o); 662 663 /* lease msg header */ 664 struct ceph_mds_lease { 665 __u8 action; /* CEPH_MDS_LEASE_* */ 666 __le16 mask; /* which lease */ 667 __le64 ino; 668 __le64 first, last; /* snap range */ 669 __le32 seq; 670 __le32 duration_ms; /* duration of renewal */ 671 } __attribute__ ((packed)); 672 /* followed by a __le32+string for dname */ 673 674 /* client reconnect */ 675 struct ceph_mds_cap_reconnect { 676 __le64 cap_id; 677 __le32 wanted; 678 __le32 issued; 679 __le64 snaprealm; 680 __le64 pathbase; /* base ino for our path to this ino */ 681 __le32 flock_len; /* size of flock state blob, if any */ 682 } __attribute__ ((packed)); 683 /* followed by flock blob */ 684 685 struct ceph_mds_cap_reconnect_v1 { 686 __le64 cap_id; 687 __le32 wanted; 688 __le32 issued; 689 __le64 size; 690 struct ceph_timespec mtime, atime; 691 __le64 snaprealm; 692 __le64 pathbase; /* base ino for our path to this ino */ 693 } __attribute__ ((packed)); 694 695 struct ceph_mds_snaprealm_reconnect { 696 __le64 ino; /* snap realm base */ 697 __le64 seq; /* snap seq for this snap realm */ 698 __le64 parent; /* parent realm */ 699 } __attribute__ ((packed)); 700 701 /* 702 * snaps 703 */ 704 enum { 705 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 706 CEPH_SNAP_OP_CREATE, 707 CEPH_SNAP_OP_DESTROY, 708 CEPH_SNAP_OP_SPLIT, 709 }; 710 711 extern const char *ceph_snap_op_name(int o); 712 713 /* snap msg header */ 714 struct ceph_mds_snap_head { 715 __le32 op; /* CEPH_SNAP_OP_* */ 716 __le64 split; /* ino to split off, if any */ 717 __le32 num_split_inos; /* # inos belonging to new child realm */ 718 __le32 num_split_realms; /* # child realms udner new child realm */ 719 __le32 trace_len; /* size of snap trace blob */ 720 } __attribute__ ((packed)); 721 /* followed by split ino list, then split realms, then the trace blob */ 722 723 /* 724 * encode info about a snaprealm, as viewed by a client 725 */ 726 struct ceph_mds_snap_realm { 727 __le64 ino; /* ino */ 728 __le64 created; /* snap: when created */ 729 __le64 parent; /* ino: parent realm */ 730 __le64 parent_since; /* snap: same parent since */ 731 __le64 seq; /* snap: version */ 732 __le32 num_snaps; 733 __le32 num_prior_parent_snaps; 734 } __attribute__ ((packed)); 735 /* followed by my snap list, then prior parent snap list */ 736 737 #endif 738