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