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 start; 202 __u8 flags; 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 CEPH_MDS_OP_RENAMESNAP = 0x01403, 327 }; 328 329 extern const char *ceph_mds_op_name(int op); 330 331 332 #define CEPH_SETATTR_MODE 1 333 #define CEPH_SETATTR_UID 2 334 #define CEPH_SETATTR_GID 4 335 #define CEPH_SETATTR_MTIME 8 336 #define CEPH_SETATTR_ATIME 16 337 #define CEPH_SETATTR_SIZE 32 338 #define CEPH_SETATTR_CTIME 64 339 340 /* 341 * Ceph setxattr request flags. 342 */ 343 #define CEPH_XATTR_CREATE (1 << 0) 344 #define CEPH_XATTR_REPLACE (1 << 1) 345 #define CEPH_XATTR_REMOVE (1 << 31) 346 347 union ceph_mds_request_args { 348 struct { 349 __le32 mask; /* CEPH_CAP_* */ 350 } __attribute__ ((packed)) getattr; 351 struct { 352 __le32 mode; 353 __le32 uid; 354 __le32 gid; 355 struct ceph_timespec mtime; 356 struct ceph_timespec atime; 357 __le64 size, old_size; /* old_size needed by truncate */ 358 __le32 mask; /* CEPH_SETATTR_* */ 359 } __attribute__ ((packed)) setattr; 360 struct { 361 __le32 frag; /* which dir fragment */ 362 __le32 max_entries; /* how many dentries to grab */ 363 __le32 max_bytes; 364 } __attribute__ ((packed)) readdir; 365 struct { 366 __le32 mode; 367 __le32 rdev; 368 } __attribute__ ((packed)) mknod; 369 struct { 370 __le32 mode; 371 } __attribute__ ((packed)) mkdir; 372 struct { 373 __le32 flags; 374 __le32 mode; 375 __le32 stripe_unit; /* layout for newly created file */ 376 __le32 stripe_count; /* ... */ 377 __le32 object_size; 378 __le32 file_replication; 379 __le32 mask; /* CEPH_CAP_* */ 380 __le32 old_size; 381 } __attribute__ ((packed)) open; 382 struct { 383 __le32 flags; 384 } __attribute__ ((packed)) setxattr; 385 struct { 386 struct ceph_file_layout layout; 387 } __attribute__ ((packed)) setlayout; 388 struct { 389 __u8 rule; /* currently fcntl or flock */ 390 __u8 type; /* shared, exclusive, remove*/ 391 __le64 owner; /* owner of the lock */ 392 __le64 pid; /* process id requesting the lock */ 393 __le64 start; /* initial location to lock */ 394 __le64 length; /* num bytes to lock from start */ 395 __u8 wait; /* will caller wait for lock to become available? */ 396 } __attribute__ ((packed)) filelock_change; 397 } __attribute__ ((packed)); 398 399 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 400 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 401 402 struct ceph_mds_request_head { 403 __le64 oldest_client_tid; 404 __le32 mdsmap_epoch; /* on client */ 405 __le32 flags; /* CEPH_MDS_FLAG_* */ 406 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 407 __le16 num_releases; /* # include cap/lease release records */ 408 __le32 op; /* mds op code */ 409 __le32 caller_uid, caller_gid; 410 __le64 ino; /* use this ino for openc, mkdir, mknod, 411 etc. (if replaying) */ 412 union ceph_mds_request_args args; 413 } __attribute__ ((packed)); 414 415 /* cap/lease release record */ 416 struct ceph_mds_request_release { 417 __le64 ino, cap_id; /* ino and unique cap id */ 418 __le32 caps, wanted; /* new issued, wanted */ 419 __le32 seq, issue_seq, mseq; 420 __le32 dname_seq; /* if releasing a dentry lease, a */ 421 __le32 dname_len; /* string follows. */ 422 } __attribute__ ((packed)); 423 424 /* client reply */ 425 struct ceph_mds_reply_head { 426 __le32 op; 427 __le32 result; 428 __le32 mdsmap_epoch; 429 __u8 safe; /* true if committed to disk */ 430 __u8 is_dentry, is_target; /* true if dentry, target inode records 431 are included with reply */ 432 } __attribute__ ((packed)); 433 434 /* one for each node split */ 435 struct ceph_frag_tree_split { 436 __le32 frag; /* this frag splits... */ 437 __le32 by; /* ...by this many bits */ 438 } __attribute__ ((packed)); 439 440 struct ceph_frag_tree_head { 441 __le32 nsplits; /* num ceph_frag_tree_split records */ 442 struct ceph_frag_tree_split splits[]; 443 } __attribute__ ((packed)); 444 445 /* capability issue, for bundling with mds reply */ 446 struct ceph_mds_reply_cap { 447 __le32 caps, wanted; /* caps issued, wanted */ 448 __le64 cap_id; 449 __le32 seq, mseq; 450 __le64 realm; /* snap realm */ 451 __u8 flags; /* CEPH_CAP_FLAG_* */ 452 } __attribute__ ((packed)); 453 454 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 455 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 456 457 /* inode record, for bundling with mds reply */ 458 struct ceph_mds_reply_inode { 459 __le64 ino; 460 __le64 snapid; 461 __le32 rdev; 462 __le64 version; /* inode version */ 463 __le64 xattr_version; /* version for xattr blob */ 464 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 465 struct ceph_file_layout layout; 466 struct ceph_timespec ctime, mtime, atime; 467 __le32 time_warp_seq; 468 __le64 size, max_size, truncate_size; 469 __le32 truncate_seq; 470 __le32 mode, uid, gid; 471 __le32 nlink; 472 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 473 struct ceph_timespec rctime; 474 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 475 } __attribute__ ((packed)); 476 /* followed by frag array, symlink string, dir layout, xattr blob */ 477 478 /* reply_lease follows dname, and reply_inode */ 479 struct ceph_mds_reply_lease { 480 __le16 mask; /* lease type(s) */ 481 __le32 duration_ms; /* lease duration */ 482 __le32 seq; 483 } __attribute__ ((packed)); 484 485 struct ceph_mds_reply_dirfrag { 486 __le32 frag; /* fragment */ 487 __le32 auth; /* auth mds, if this is a delegation point */ 488 __le32 ndist; /* number of mds' this is replicated on */ 489 __le32 dist[]; 490 } __attribute__ ((packed)); 491 492 #define CEPH_LOCK_FCNTL 1 493 #define CEPH_LOCK_FLOCK 2 494 #define CEPH_LOCK_FCNTL_INTR 3 495 #define CEPH_LOCK_FLOCK_INTR 4 496 497 498 #define CEPH_LOCK_SHARED 1 499 #define CEPH_LOCK_EXCL 2 500 #define CEPH_LOCK_UNLOCK 4 501 502 struct ceph_filelock { 503 __le64 start;/* file offset to start lock at */ 504 __le64 length; /* num bytes to lock; 0 for all following start */ 505 __le64 client; /* which client holds the lock */ 506 __le64 owner; /* owner the lock */ 507 __le64 pid; /* process id holding the lock on the client */ 508 __u8 type; /* shared lock, exclusive lock, or unlock */ 509 } __attribute__ ((packed)); 510 511 512 /* file access modes */ 513 #define CEPH_FILE_MODE_PIN 0 514 #define CEPH_FILE_MODE_RD 1 515 #define CEPH_FILE_MODE_WR 2 516 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 517 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 518 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ 519 520 int ceph_flags_to_mode(int flags); 521 522 #define CEPH_INLINE_NONE ((__u64)-1) 523 524 /* capability bits */ 525 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 526 527 /* generic cap bits */ 528 #define CEPH_CAP_GSHARED 1 /* client can reads */ 529 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 530 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 531 #define CEPH_CAP_GRD 8 /* (file) client can read */ 532 #define CEPH_CAP_GWR 16 /* (file) client can write */ 533 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 534 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 535 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 536 537 #define CEPH_CAP_SIMPLE_BITS 2 538 #define CEPH_CAP_FILE_BITS 8 539 540 /* per-lock shift */ 541 #define CEPH_CAP_SAUTH 2 542 #define CEPH_CAP_SLINK 4 543 #define CEPH_CAP_SXATTR 6 544 #define CEPH_CAP_SFILE 8 545 #define CEPH_CAP_SFLOCK 20 546 547 #define CEPH_CAP_BITS 22 548 549 /* composed values */ 550 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 551 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 552 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 553 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 554 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 555 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 556 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 557 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 558 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 559 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 560 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 561 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 562 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 563 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 564 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 565 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 566 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 567 568 569 /* cap masks (for getattr) */ 570 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 571 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 572 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 573 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 574 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 575 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 576 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 577 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 578 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 579 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 580 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 581 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 582 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 583 CEPH_CAP_AUTH_SHARED | \ 584 CEPH_CAP_LINK_SHARED | \ 585 CEPH_CAP_FILE_SHARED | \ 586 CEPH_CAP_XATTR_SHARED) 587 #define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 588 CEPH_CAP_FILE_RD) 589 590 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 591 CEPH_CAP_LINK_SHARED | \ 592 CEPH_CAP_XATTR_SHARED | \ 593 CEPH_CAP_FILE_SHARED) 594 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 595 CEPH_CAP_FILE_CACHE) 596 597 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 598 CEPH_CAP_LINK_EXCL | \ 599 CEPH_CAP_XATTR_EXCL | \ 600 CEPH_CAP_FILE_EXCL) 601 #define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 602 CEPH_CAP_FILE_SHARED) 603 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 604 CEPH_CAP_FILE_EXCL) 605 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 606 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 607 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 608 CEPH_CAP_PIN) 609 610 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 611 CEPH_LOCK_IXATTR) 612 613 int ceph_caps_for_mode(int mode); 614 615 enum { 616 CEPH_CAP_OP_GRANT, /* mds->client grant */ 617 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 618 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 619 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 620 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 621 CEPH_CAP_OP_UPDATE, /* client->mds update */ 622 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 623 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 624 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 625 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 626 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 627 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 628 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 629 }; 630 631 extern const char *ceph_cap_op_name(int op); 632 633 /* 634 * caps message, used for capability callbacks, acks, requests, etc. 635 */ 636 struct ceph_mds_caps { 637 __le32 op; /* CEPH_CAP_OP_* */ 638 __le64 ino, realm; 639 __le64 cap_id; 640 __le32 seq, issue_seq; 641 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 642 __le32 migrate_seq; 643 __le64 snap_follows; 644 __le32 snap_trace_len; 645 646 /* authlock */ 647 __le32 uid, gid, mode; 648 649 /* linklock */ 650 __le32 nlink; 651 652 /* xattrlock */ 653 __le32 xattr_len; 654 __le64 xattr_version; 655 656 /* filelock */ 657 __le64 size, max_size, truncate_size; 658 __le32 truncate_seq; 659 struct ceph_timespec mtime, atime, ctime; 660 struct ceph_file_layout layout; 661 __le32 time_warp_seq; 662 } __attribute__ ((packed)); 663 664 struct ceph_mds_cap_peer { 665 __le64 cap_id; 666 __le32 seq; 667 __le32 mseq; 668 __le32 mds; 669 __u8 flags; 670 } __attribute__ ((packed)); 671 672 /* cap release msg head */ 673 struct ceph_mds_cap_release { 674 __le32 num; /* number of cap_items that follow */ 675 } __attribute__ ((packed)); 676 677 struct ceph_mds_cap_item { 678 __le64 ino; 679 __le64 cap_id; 680 __le32 migrate_seq, seq; 681 } __attribute__ ((packed)); 682 683 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 684 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 685 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 686 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 687 688 extern const char *ceph_lease_op_name(int o); 689 690 /* lease msg header */ 691 struct ceph_mds_lease { 692 __u8 action; /* CEPH_MDS_LEASE_* */ 693 __le16 mask; /* which lease */ 694 __le64 ino; 695 __le64 first, last; /* snap range */ 696 __le32 seq; 697 __le32 duration_ms; /* duration of renewal */ 698 } __attribute__ ((packed)); 699 /* followed by a __le32+string for dname */ 700 701 /* client reconnect */ 702 struct ceph_mds_cap_reconnect { 703 __le64 cap_id; 704 __le32 wanted; 705 __le32 issued; 706 __le64 snaprealm; 707 __le64 pathbase; /* base ino for our path to this ino */ 708 __le32 flock_len; /* size of flock state blob, if any */ 709 } __attribute__ ((packed)); 710 /* followed by flock blob */ 711 712 struct ceph_mds_cap_reconnect_v1 { 713 __le64 cap_id; 714 __le32 wanted; 715 __le32 issued; 716 __le64 size; 717 struct ceph_timespec mtime, atime; 718 __le64 snaprealm; 719 __le64 pathbase; /* base ino for our path to this ino */ 720 } __attribute__ ((packed)); 721 722 struct ceph_mds_snaprealm_reconnect { 723 __le64 ino; /* snap realm base */ 724 __le64 seq; /* snap seq for this snap realm */ 725 __le64 parent; /* parent realm */ 726 } __attribute__ ((packed)); 727 728 /* 729 * snaps 730 */ 731 enum { 732 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 733 CEPH_SNAP_OP_CREATE, 734 CEPH_SNAP_OP_DESTROY, 735 CEPH_SNAP_OP_SPLIT, 736 }; 737 738 extern const char *ceph_snap_op_name(int o); 739 740 /* snap msg header */ 741 struct ceph_mds_snap_head { 742 __le32 op; /* CEPH_SNAP_OP_* */ 743 __le64 split; /* ino to split off, if any */ 744 __le32 num_split_inos; /* # inos belonging to new child realm */ 745 __le32 num_split_realms; /* # child realms udner new child realm */ 746 __le32 trace_len; /* size of snap trace blob */ 747 } __attribute__ ((packed)); 748 /* followed by split ino list, then split realms, then the trace blob */ 749 750 /* 751 * encode info about a snaprealm, as viewed by a client 752 */ 753 struct ceph_mds_snap_realm { 754 __le64 ino; /* ino */ 755 __le64 created; /* snap: when created */ 756 __le64 parent; /* ino: parent realm */ 757 __le64 parent_since; /* snap: same parent since */ 758 __le64 seq; /* snap: version */ 759 __le32 num_snaps; 760 __le32 num_prior_parent_snaps; 761 } __attribute__ ((packed)); 762 /* followed by my snap list, then prior parent snap list */ 763 764 #endif 765