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 * ceph_file_layout - describe data layout for a file/inode 38 */ 39 struct ceph_file_layout { 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 #define ceph_file_layout_su(l) ((__s32)le32_to_cpu((l).fl_stripe_unit)) 57 #define ceph_file_layout_stripe_count(l) \ 58 ((__s32)le32_to_cpu((l).fl_stripe_count)) 59 #define ceph_file_layout_object_size(l) ((__s32)le32_to_cpu((l).fl_object_size)) 60 #define ceph_file_layout_cas_hash(l) ((__s32)le32_to_cpu((l).fl_cas_hash)) 61 #define ceph_file_layout_object_su(l) \ 62 ((__s32)le32_to_cpu((l).fl_object_stripe_unit)) 63 #define ceph_file_layout_pg_pool(l) \ 64 ((__s32)le32_to_cpu((l).fl_pg_pool)) 65 66 static inline unsigned ceph_file_layout_stripe_width(struct ceph_file_layout *l) 67 { 68 return le32_to_cpu(l->fl_stripe_unit) * 69 le32_to_cpu(l->fl_stripe_count); 70 } 71 72 /* "period" == bytes before i start on a new set of objects */ 73 static inline unsigned ceph_file_layout_period(struct ceph_file_layout *l) 74 { 75 return le32_to_cpu(l->fl_object_size) * 76 le32_to_cpu(l->fl_stripe_count); 77 } 78 79 #define CEPH_MIN_STRIPE_UNIT 65536 80 81 int ceph_file_layout_is_valid(const struct ceph_file_layout *layout); 82 83 struct ceph_dir_layout { 84 __u8 dl_dir_hash; /* see ceph_hash.h for ids */ 85 __u8 dl_unused1; 86 __u16 dl_unused2; 87 __u32 dl_unused3; 88 } __attribute__ ((packed)); 89 90 /* crypto algorithms */ 91 #define CEPH_CRYPTO_NONE 0x0 92 #define CEPH_CRYPTO_AES 0x1 93 94 #define CEPH_AES_IV "cephsageyudagreg" 95 96 /* security/authentication protocols */ 97 #define CEPH_AUTH_UNKNOWN 0x0 98 #define CEPH_AUTH_NONE 0x1 99 #define CEPH_AUTH_CEPHX 0x2 100 101 #define CEPH_AUTH_UID_DEFAULT ((__u64) -1) 102 103 104 /********************************************* 105 * message layer 106 */ 107 108 /* 109 * message types 110 */ 111 112 /* misc */ 113 #define CEPH_MSG_SHUTDOWN 1 114 #define CEPH_MSG_PING 2 115 116 /* client <-> monitor */ 117 #define CEPH_MSG_MON_MAP 4 118 #define CEPH_MSG_MON_GET_MAP 5 119 #define CEPH_MSG_STATFS 13 120 #define CEPH_MSG_STATFS_REPLY 14 121 #define CEPH_MSG_MON_SUBSCRIBE 15 122 #define CEPH_MSG_MON_SUBSCRIBE_ACK 16 123 #define CEPH_MSG_AUTH 17 124 #define CEPH_MSG_AUTH_REPLY 18 125 #define CEPH_MSG_MON_GET_VERSION 19 126 #define CEPH_MSG_MON_GET_VERSION_REPLY 20 127 128 /* client <-> mds */ 129 #define CEPH_MSG_MDS_MAP 21 130 131 #define CEPH_MSG_CLIENT_SESSION 22 132 #define CEPH_MSG_CLIENT_RECONNECT 23 133 134 #define CEPH_MSG_CLIENT_REQUEST 24 135 #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25 136 #define CEPH_MSG_CLIENT_REPLY 26 137 #define CEPH_MSG_CLIENT_CAPS 0x310 138 #define CEPH_MSG_CLIENT_LEASE 0x311 139 #define CEPH_MSG_CLIENT_SNAP 0x312 140 #define CEPH_MSG_CLIENT_CAPRELEASE 0x313 141 142 /* pool ops */ 143 #define CEPH_MSG_POOLOP_REPLY 48 144 #define CEPH_MSG_POOLOP 49 145 146 147 /* osd */ 148 #define CEPH_MSG_OSD_MAP 41 149 #define CEPH_MSG_OSD_OP 42 150 #define CEPH_MSG_OSD_OPREPLY 43 151 #define CEPH_MSG_WATCH_NOTIFY 44 152 153 154 /* watch-notify operations */ 155 enum { 156 WATCH_NOTIFY = 1, /* notifying watcher */ 157 WATCH_NOTIFY_COMPLETE = 2, /* notifier notified when done */ 158 }; 159 160 161 struct ceph_mon_request_header { 162 __le64 have_version; 163 __le16 session_mon; 164 __le64 session_mon_tid; 165 } __attribute__ ((packed)); 166 167 struct ceph_mon_statfs { 168 struct ceph_mon_request_header monhdr; 169 struct ceph_fsid fsid; 170 } __attribute__ ((packed)); 171 172 struct ceph_statfs { 173 __le64 kb, kb_used, kb_avail; 174 __le64 num_objects; 175 } __attribute__ ((packed)); 176 177 struct ceph_mon_statfs_reply { 178 struct ceph_fsid fsid; 179 __le64 version; 180 struct ceph_statfs st; 181 } __attribute__ ((packed)); 182 183 struct ceph_osd_getmap { 184 struct ceph_mon_request_header monhdr; 185 struct ceph_fsid fsid; 186 __le32 start; 187 } __attribute__ ((packed)); 188 189 struct ceph_mds_getmap { 190 struct ceph_mon_request_header monhdr; 191 struct ceph_fsid fsid; 192 } __attribute__ ((packed)); 193 194 struct ceph_client_mount { 195 struct ceph_mon_request_header monhdr; 196 } __attribute__ ((packed)); 197 198 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ 199 200 struct ceph_mon_subscribe_item { 201 __le64 have_version; __le64 have; 202 __u8 onetime; 203 } __attribute__ ((packed)); 204 205 struct ceph_mon_subscribe_ack { 206 __le32 duration; /* seconds */ 207 struct ceph_fsid fsid; 208 } __attribute__ ((packed)); 209 210 /* 211 * mdsmap flags 212 */ 213 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ 214 215 /* 216 * mds states 217 * > 0 -> in 218 * <= 0 -> out 219 */ 220 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 221 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 222 empty log. */ 223 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 224 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 225 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 226 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 227 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 228 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an 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 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ 261 262 /* client_session ops */ 263 enum { 264 CEPH_SESSION_REQUEST_OPEN, 265 CEPH_SESSION_OPEN, 266 CEPH_SESSION_REQUEST_CLOSE, 267 CEPH_SESSION_CLOSE, 268 CEPH_SESSION_REQUEST_RENEWCAPS, 269 CEPH_SESSION_RENEWCAPS, 270 CEPH_SESSION_STALE, 271 CEPH_SESSION_RECALL_STATE, 272 CEPH_SESSION_FLUSHMSG, 273 CEPH_SESSION_FLUSHMSG_ACK, 274 CEPH_SESSION_FORCE_RO, 275 }; 276 277 extern const char *ceph_session_op_name(int op); 278 279 struct ceph_mds_session_head { 280 __le32 op; 281 __le64 seq; 282 struct ceph_timespec stamp; 283 __le32 max_caps, max_leases; 284 } __attribute__ ((packed)); 285 286 /* client_request */ 287 /* 288 * metadata ops. 289 * & 0x001000 -> write op 290 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 291 & & 0x100000 -> use weird ino/path trace 292 */ 293 #define CEPH_MDS_OP_WRITE 0x001000 294 enum { 295 CEPH_MDS_OP_LOOKUP = 0x00100, 296 CEPH_MDS_OP_GETATTR = 0x00101, 297 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 298 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 299 CEPH_MDS_OP_LOOKUPINO = 0x00104, 300 CEPH_MDS_OP_LOOKUPNAME = 0x00105, 301 302 CEPH_MDS_OP_SETXATTR = 0x01105, 303 CEPH_MDS_OP_RMXATTR = 0x01106, 304 CEPH_MDS_OP_SETLAYOUT = 0x01107, 305 CEPH_MDS_OP_SETATTR = 0x01108, 306 CEPH_MDS_OP_SETFILELOCK= 0x01109, 307 CEPH_MDS_OP_GETFILELOCK= 0x00110, 308 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 309 310 CEPH_MDS_OP_MKNOD = 0x01201, 311 CEPH_MDS_OP_LINK = 0x01202, 312 CEPH_MDS_OP_UNLINK = 0x01203, 313 CEPH_MDS_OP_RENAME = 0x01204, 314 CEPH_MDS_OP_MKDIR = 0x01220, 315 CEPH_MDS_OP_RMDIR = 0x01221, 316 CEPH_MDS_OP_SYMLINK = 0x01222, 317 318 CEPH_MDS_OP_CREATE = 0x01301, 319 CEPH_MDS_OP_OPEN = 0x00302, 320 CEPH_MDS_OP_READDIR = 0x00305, 321 322 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 323 CEPH_MDS_OP_MKSNAP = 0x01400, 324 CEPH_MDS_OP_RMSNAP = 0x01401, 325 CEPH_MDS_OP_LSSNAP = 0x00402, 326 }; 327 328 extern const char *ceph_mds_op_name(int op); 329 330 331 #define CEPH_SETATTR_MODE 1 332 #define CEPH_SETATTR_UID 2 333 #define CEPH_SETATTR_GID 4 334 #define CEPH_SETATTR_MTIME 8 335 #define CEPH_SETATTR_ATIME 16 336 #define CEPH_SETATTR_SIZE 32 337 #define CEPH_SETATTR_CTIME 64 338 339 /* 340 * Ceph setxattr request flags. 341 */ 342 #define CEPH_XATTR_CREATE (1 << 0) 343 #define CEPH_XATTR_REPLACE (1 << 1) 344 #define CEPH_XATTR_REMOVE (1 << 31) 345 346 union ceph_mds_request_args { 347 struct { 348 __le32 mask; /* CEPH_CAP_* */ 349 } __attribute__ ((packed)) getattr; 350 struct { 351 __le32 mode; 352 __le32 uid; 353 __le32 gid; 354 struct ceph_timespec mtime; 355 struct ceph_timespec atime; 356 __le64 size, old_size; /* old_size needed by truncate */ 357 __le32 mask; /* CEPH_SETATTR_* */ 358 } __attribute__ ((packed)) setattr; 359 struct { 360 __le32 frag; /* which dir fragment */ 361 __le32 max_entries; /* how many dentries to grab */ 362 __le32 max_bytes; 363 } __attribute__ ((packed)) readdir; 364 struct { 365 __le32 mode; 366 __le32 rdev; 367 } __attribute__ ((packed)) mknod; 368 struct { 369 __le32 mode; 370 } __attribute__ ((packed)) mkdir; 371 struct { 372 __le32 flags; 373 __le32 mode; 374 __le32 stripe_unit; /* layout for newly created file */ 375 __le32 stripe_count; /* ... */ 376 __le32 object_size; 377 __le32 file_replication; 378 __le32 unused; /* used to be preferred osd */ 379 } __attribute__ ((packed)) open; 380 struct { 381 __le32 flags; 382 } __attribute__ ((packed)) setxattr; 383 struct { 384 struct ceph_file_layout layout; 385 } __attribute__ ((packed)) setlayout; 386 struct { 387 __u8 rule; /* currently fcntl or flock */ 388 __u8 type; /* shared, exclusive, remove*/ 389 __le64 owner; /* owner of the lock */ 390 __le64 pid; /* process id requesting the lock */ 391 __le64 start; /* initial location to lock */ 392 __le64 length; /* num bytes to lock from start */ 393 __u8 wait; /* will caller wait for lock to become available? */ 394 } __attribute__ ((packed)) filelock_change; 395 } __attribute__ ((packed)); 396 397 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 398 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 399 400 struct ceph_mds_request_head { 401 __le64 oldest_client_tid; 402 __le32 mdsmap_epoch; /* on client */ 403 __le32 flags; /* CEPH_MDS_FLAG_* */ 404 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 405 __le16 num_releases; /* # include cap/lease release records */ 406 __le32 op; /* mds op code */ 407 __le32 caller_uid, caller_gid; 408 __le64 ino; /* use this ino for openc, mkdir, mknod, 409 etc. (if replaying) */ 410 union ceph_mds_request_args args; 411 } __attribute__ ((packed)); 412 413 /* cap/lease release record */ 414 struct ceph_mds_request_release { 415 __le64 ino, cap_id; /* ino and unique cap id */ 416 __le32 caps, wanted; /* new issued, wanted */ 417 __le32 seq, issue_seq, mseq; 418 __le32 dname_seq; /* if releasing a dentry lease, a */ 419 __le32 dname_len; /* string follows. */ 420 } __attribute__ ((packed)); 421 422 /* client reply */ 423 struct ceph_mds_reply_head { 424 __le32 op; 425 __le32 result; 426 __le32 mdsmap_epoch; 427 __u8 safe; /* true if committed to disk */ 428 __u8 is_dentry, is_target; /* true if dentry, target inode records 429 are included with reply */ 430 } __attribute__ ((packed)); 431 432 /* one for each node split */ 433 struct ceph_frag_tree_split { 434 __le32 frag; /* this frag splits... */ 435 __le32 by; /* ...by this many bits */ 436 } __attribute__ ((packed)); 437 438 struct ceph_frag_tree_head { 439 __le32 nsplits; /* num ceph_frag_tree_split records */ 440 struct ceph_frag_tree_split splits[]; 441 } __attribute__ ((packed)); 442 443 /* capability issue, for bundling with mds reply */ 444 struct ceph_mds_reply_cap { 445 __le32 caps, wanted; /* caps issued, wanted */ 446 __le64 cap_id; 447 __le32 seq, mseq; 448 __le64 realm; /* snap realm */ 449 __u8 flags; /* CEPH_CAP_FLAG_* */ 450 } __attribute__ ((packed)); 451 452 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 453 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 454 455 /* inode record, for bundling with mds reply */ 456 struct ceph_mds_reply_inode { 457 __le64 ino; 458 __le64 snapid; 459 __le32 rdev; 460 __le64 version; /* inode version */ 461 __le64 xattr_version; /* version for xattr blob */ 462 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 463 struct ceph_file_layout layout; 464 struct ceph_timespec ctime, mtime, atime; 465 __le32 time_warp_seq; 466 __le64 size, max_size, truncate_size; 467 __le32 truncate_seq; 468 __le32 mode, uid, gid; 469 __le32 nlink; 470 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 471 struct ceph_timespec rctime; 472 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 473 } __attribute__ ((packed)); 474 /* followed by frag array, symlink string, dir layout, xattr blob */ 475 476 /* reply_lease follows dname, and reply_inode */ 477 struct ceph_mds_reply_lease { 478 __le16 mask; /* lease type(s) */ 479 __le32 duration_ms; /* lease duration */ 480 __le32 seq; 481 } __attribute__ ((packed)); 482 483 struct ceph_mds_reply_dirfrag { 484 __le32 frag; /* fragment */ 485 __le32 auth; /* auth mds, if this is a delegation point */ 486 __le32 ndist; /* number of mds' this is replicated on */ 487 __le32 dist[]; 488 } __attribute__ ((packed)); 489 490 #define CEPH_LOCK_FCNTL 1 491 #define CEPH_LOCK_FLOCK 2 492 #define CEPH_LOCK_FCNTL_INTR 3 493 #define CEPH_LOCK_FLOCK_INTR 4 494 495 496 #define CEPH_LOCK_SHARED 1 497 #define CEPH_LOCK_EXCL 2 498 #define CEPH_LOCK_UNLOCK 4 499 500 struct ceph_filelock { 501 __le64 start;/* file offset to start lock at */ 502 __le64 length; /* num bytes to lock; 0 for all following start */ 503 __le64 client; /* which client holds the lock */ 504 __le64 owner; /* owner the lock */ 505 __le64 pid; /* process id holding the lock on the client */ 506 __u8 type; /* shared lock, exclusive lock, or unlock */ 507 } __attribute__ ((packed)); 508 509 510 /* file access modes */ 511 #define CEPH_FILE_MODE_PIN 0 512 #define CEPH_FILE_MODE_RD 1 513 #define CEPH_FILE_MODE_WR 2 514 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 515 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 516 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ 517 518 int ceph_flags_to_mode(int flags); 519 520 #define CEPH_INLINE_NONE ((__u64)-1) 521 522 /* capability bits */ 523 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 524 525 /* generic cap bits */ 526 #define CEPH_CAP_GSHARED 1 /* client can reads */ 527 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 528 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 529 #define CEPH_CAP_GRD 8 /* (file) client can read */ 530 #define CEPH_CAP_GWR 16 /* (file) client can write */ 531 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 532 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 533 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 534 535 #define CEPH_CAP_SIMPLE_BITS 2 536 #define CEPH_CAP_FILE_BITS 8 537 538 /* per-lock shift */ 539 #define CEPH_CAP_SAUTH 2 540 #define CEPH_CAP_SLINK 4 541 #define CEPH_CAP_SXATTR 6 542 #define CEPH_CAP_SFILE 8 543 #define CEPH_CAP_SFLOCK 20 544 545 #define CEPH_CAP_BITS 22 546 547 /* composed values */ 548 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 549 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 550 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 551 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 552 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 553 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 554 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 555 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 556 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 557 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 558 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 559 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 560 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 561 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 562 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 563 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 564 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 565 566 567 /* cap masks (for getattr) */ 568 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 569 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 570 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 571 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 572 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 573 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 574 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 575 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 576 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 577 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 578 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 579 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 580 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 581 CEPH_CAP_AUTH_SHARED | \ 582 CEPH_CAP_LINK_SHARED | \ 583 CEPH_CAP_FILE_SHARED | \ 584 CEPH_CAP_XATTR_SHARED) 585 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 586 CEPH_CAP_FILE_RD) 587 588 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 589 CEPH_CAP_LINK_SHARED | \ 590 CEPH_CAP_XATTR_SHARED | \ 591 CEPH_CAP_FILE_SHARED) 592 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 593 CEPH_CAP_FILE_CACHE) 594 595 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 596 CEPH_CAP_LINK_EXCL | \ 597 CEPH_CAP_XATTR_EXCL | \ 598 CEPH_CAP_FILE_EXCL) 599 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 600 CEPH_CAP_FILE_SHARED) 601 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 602 CEPH_CAP_FILE_EXCL) 603 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 604 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 605 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 606 CEPH_CAP_PIN) 607 608 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 609 CEPH_LOCK_IXATTR) 610 611 int ceph_caps_for_mode(int mode); 612 613 enum { 614 CEPH_CAP_OP_GRANT, /* mds->client grant */ 615 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 616 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 617 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 618 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 619 CEPH_CAP_OP_UPDATE, /* client->mds update */ 620 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 621 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 622 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 623 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 624 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 625 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 626 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 627 }; 628 629 extern const char *ceph_cap_op_name(int op); 630 631 /* 632 * caps message, used for capability callbacks, acks, requests, etc. 633 */ 634 struct ceph_mds_caps { 635 __le32 op; /* CEPH_CAP_OP_* */ 636 __le64 ino, realm; 637 __le64 cap_id; 638 __le32 seq, issue_seq; 639 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 640 __le32 migrate_seq; 641 __le64 snap_follows; 642 __le32 snap_trace_len; 643 644 /* authlock */ 645 __le32 uid, gid, mode; 646 647 /* linklock */ 648 __le32 nlink; 649 650 /* xattrlock */ 651 __le32 xattr_len; 652 __le64 xattr_version; 653 654 /* filelock */ 655 __le64 size, max_size, truncate_size; 656 __le32 truncate_seq; 657 struct ceph_timespec mtime, atime, ctime; 658 struct ceph_file_layout layout; 659 __le32 time_warp_seq; 660 } __attribute__ ((packed)); 661 662 struct ceph_mds_cap_peer { 663 __le64 cap_id; 664 __le32 seq; 665 __le32 mseq; 666 __le32 mds; 667 __u8 flags; 668 } __attribute__ ((packed)); 669 670 /* cap release msg head */ 671 struct ceph_mds_cap_release { 672 __le32 num; /* number of cap_items that follow */ 673 } __attribute__ ((packed)); 674 675 struct ceph_mds_cap_item { 676 __le64 ino; 677 __le64 cap_id; 678 __le32 migrate_seq, seq; 679 } __attribute__ ((packed)); 680 681 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 682 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 683 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 684 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 685 686 extern const char *ceph_lease_op_name(int o); 687 688 /* lease msg header */ 689 struct ceph_mds_lease { 690 __u8 action; /* CEPH_MDS_LEASE_* */ 691 __le16 mask; /* which lease */ 692 __le64 ino; 693 __le64 first, last; /* snap range */ 694 __le32 seq; 695 __le32 duration_ms; /* duration of renewal */ 696 } __attribute__ ((packed)); 697 /* followed by a __le32+string for dname */ 698 699 /* client reconnect */ 700 struct ceph_mds_cap_reconnect { 701 __le64 cap_id; 702 __le32 wanted; 703 __le32 issued; 704 __le64 snaprealm; 705 __le64 pathbase; /* base ino for our path to this ino */ 706 __le32 flock_len; /* size of flock state blob, if any */ 707 } __attribute__ ((packed)); 708 /* followed by flock blob */ 709 710 struct ceph_mds_cap_reconnect_v1 { 711 __le64 cap_id; 712 __le32 wanted; 713 __le32 issued; 714 __le64 size; 715 struct ceph_timespec mtime, atime; 716 __le64 snaprealm; 717 __le64 pathbase; /* base ino for our path to this ino */ 718 } __attribute__ ((packed)); 719 720 struct ceph_mds_snaprealm_reconnect { 721 __le64 ino; /* snap realm base */ 722 __le64 seq; /* snap seq for this snap realm */ 723 __le64 parent; /* parent realm */ 724 } __attribute__ ((packed)); 725 726 /* 727 * snaps 728 */ 729 enum { 730 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 731 CEPH_SNAP_OP_CREATE, 732 CEPH_SNAP_OP_DESTROY, 733 CEPH_SNAP_OP_SPLIT, 734 }; 735 736 extern const char *ceph_snap_op_name(int o); 737 738 /* snap msg header */ 739 struct ceph_mds_snap_head { 740 __le32 op; /* CEPH_SNAP_OP_* */ 741 __le64 split; /* ino to split off, if any */ 742 __le32 num_split_inos; /* # inos belonging to new child realm */ 743 __le32 num_split_realms; /* # child realms udner new child realm */ 744 __le32 trace_len; /* size of snap trace blob */ 745 } __attribute__ ((packed)); 746 /* followed by split ino list, then split realms, then the trace blob */ 747 748 /* 749 * encode info about a snaprealm, as viewed by a client 750 */ 751 struct ceph_mds_snap_realm { 752 __le64 ino; /* ino */ 753 __le64 created; /* snap: when created */ 754 __le64 parent; /* ino: parent realm */ 755 __le64 parent_since; /* snap: same parent since */ 756 __le64 seq; /* snap: version */ 757 __le32 num_snaps; 758 __le32 num_prior_parent_snaps; 759 } __attribute__ ((packed)); 760 /* followed by my snap list, then prior parent snap list */ 761 762 #endif 763