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 /* pool operations */ 162 enum { 163 POOL_OP_CREATE = 0x01, 164 POOL_OP_DELETE = 0x02, 165 POOL_OP_AUID_CHANGE = 0x03, 166 POOL_OP_CREATE_SNAP = 0x11, 167 POOL_OP_DELETE_SNAP = 0x12, 168 POOL_OP_CREATE_UNMANAGED_SNAP = 0x21, 169 POOL_OP_DELETE_UNMANAGED_SNAP = 0x22, 170 }; 171 172 struct ceph_mon_request_header { 173 __le64 have_version; 174 __le16 session_mon; 175 __le64 session_mon_tid; 176 } __attribute__ ((packed)); 177 178 struct ceph_mon_statfs { 179 struct ceph_mon_request_header monhdr; 180 struct ceph_fsid fsid; 181 } __attribute__ ((packed)); 182 183 struct ceph_statfs { 184 __le64 kb, kb_used, kb_avail; 185 __le64 num_objects; 186 } __attribute__ ((packed)); 187 188 struct ceph_mon_statfs_reply { 189 struct ceph_fsid fsid; 190 __le64 version; 191 struct ceph_statfs st; 192 } __attribute__ ((packed)); 193 194 const char *ceph_pool_op_name(int op); 195 196 struct ceph_mon_poolop { 197 struct ceph_mon_request_header monhdr; 198 struct ceph_fsid fsid; 199 __le32 pool; 200 __le32 op; 201 __le64 auid; 202 __le64 snapid; 203 __le32 name_len; 204 } __attribute__ ((packed)); 205 206 struct ceph_mon_poolop_reply { 207 struct ceph_mon_request_header monhdr; 208 struct ceph_fsid fsid; 209 __le32 reply_code; 210 __le32 epoch; 211 char has_data; 212 char data[0]; 213 } __attribute__ ((packed)); 214 215 struct ceph_mon_unmanaged_snap { 216 __le64 snapid; 217 } __attribute__ ((packed)); 218 219 struct ceph_osd_getmap { 220 struct ceph_mon_request_header monhdr; 221 struct ceph_fsid fsid; 222 __le32 start; 223 } __attribute__ ((packed)); 224 225 struct ceph_mds_getmap { 226 struct ceph_mon_request_header monhdr; 227 struct ceph_fsid fsid; 228 } __attribute__ ((packed)); 229 230 struct ceph_client_mount { 231 struct ceph_mon_request_header monhdr; 232 } __attribute__ ((packed)); 233 234 #define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */ 235 236 struct ceph_mon_subscribe_item { 237 __le64 have_version; __le64 have; 238 __u8 onetime; 239 } __attribute__ ((packed)); 240 241 struct ceph_mon_subscribe_ack { 242 __le32 duration; /* seconds */ 243 struct ceph_fsid fsid; 244 } __attribute__ ((packed)); 245 246 /* 247 * mdsmap flags 248 */ 249 #define CEPH_MDSMAP_DOWN (1<<0) /* cluster deliberately down */ 250 251 /* 252 * mds states 253 * > 0 -> in 254 * <= 0 -> out 255 */ 256 #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 257 #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 258 empty log. */ 259 #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 260 #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 261 #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 262 #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 263 #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 264 #define CEPH_MDS_STATE_REPLAYONCE -9 /* up, replaying an active node's journal */ 265 266 #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ 267 #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed 268 operations (import, rename, etc.) */ 269 #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ 270 #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ 271 #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ 272 #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ 273 #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ 274 275 extern const char *ceph_mds_state_name(int s); 276 277 278 /* 279 * metadata lock types. 280 * - these are bitmasks.. we can compose them 281 * - they also define the lock ordering by the MDS 282 * - a few of these are internal to the mds 283 */ 284 #define CEPH_LOCK_DVERSION 1 285 #define CEPH_LOCK_DN 2 286 #define CEPH_LOCK_ISNAP 16 287 #define CEPH_LOCK_IVERSION 32 /* mds internal */ 288 #define CEPH_LOCK_IFILE 64 289 #define CEPH_LOCK_IAUTH 128 290 #define CEPH_LOCK_ILINK 256 291 #define CEPH_LOCK_IDFT 512 /* dir frag tree */ 292 #define CEPH_LOCK_INEST 1024 /* mds internal */ 293 #define CEPH_LOCK_IXATTR 2048 294 #define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ 295 #define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ 296 #define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ 297 298 /* client_session ops */ 299 enum { 300 CEPH_SESSION_REQUEST_OPEN, 301 CEPH_SESSION_OPEN, 302 CEPH_SESSION_REQUEST_CLOSE, 303 CEPH_SESSION_CLOSE, 304 CEPH_SESSION_REQUEST_RENEWCAPS, 305 CEPH_SESSION_RENEWCAPS, 306 CEPH_SESSION_STALE, 307 CEPH_SESSION_RECALL_STATE, 308 CEPH_SESSION_FLUSHMSG, 309 CEPH_SESSION_FLUSHMSG_ACK, 310 }; 311 312 extern const char *ceph_session_op_name(int op); 313 314 struct ceph_mds_session_head { 315 __le32 op; 316 __le64 seq; 317 struct ceph_timespec stamp; 318 __le32 max_caps, max_leases; 319 } __attribute__ ((packed)); 320 321 /* client_request */ 322 /* 323 * metadata ops. 324 * & 0x001000 -> write op 325 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 326 & & 0x100000 -> use weird ino/path trace 327 */ 328 #define CEPH_MDS_OP_WRITE 0x001000 329 enum { 330 CEPH_MDS_OP_LOOKUP = 0x00100, 331 CEPH_MDS_OP_GETATTR = 0x00101, 332 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 333 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 334 CEPH_MDS_OP_LOOKUPINO = 0x00104, 335 336 CEPH_MDS_OP_SETXATTR = 0x01105, 337 CEPH_MDS_OP_RMXATTR = 0x01106, 338 CEPH_MDS_OP_SETLAYOUT = 0x01107, 339 CEPH_MDS_OP_SETATTR = 0x01108, 340 CEPH_MDS_OP_SETFILELOCK= 0x01109, 341 CEPH_MDS_OP_GETFILELOCK= 0x00110, 342 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 343 344 CEPH_MDS_OP_MKNOD = 0x01201, 345 CEPH_MDS_OP_LINK = 0x01202, 346 CEPH_MDS_OP_UNLINK = 0x01203, 347 CEPH_MDS_OP_RENAME = 0x01204, 348 CEPH_MDS_OP_MKDIR = 0x01220, 349 CEPH_MDS_OP_RMDIR = 0x01221, 350 CEPH_MDS_OP_SYMLINK = 0x01222, 351 352 CEPH_MDS_OP_CREATE = 0x01301, 353 CEPH_MDS_OP_OPEN = 0x00302, 354 CEPH_MDS_OP_READDIR = 0x00305, 355 356 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 357 CEPH_MDS_OP_MKSNAP = 0x01400, 358 CEPH_MDS_OP_RMSNAP = 0x01401, 359 CEPH_MDS_OP_LSSNAP = 0x00402, 360 }; 361 362 extern const char *ceph_mds_op_name(int op); 363 364 365 #define CEPH_SETATTR_MODE 1 366 #define CEPH_SETATTR_UID 2 367 #define CEPH_SETATTR_GID 4 368 #define CEPH_SETATTR_MTIME 8 369 #define CEPH_SETATTR_ATIME 16 370 #define CEPH_SETATTR_SIZE 32 371 #define CEPH_SETATTR_CTIME 64 372 373 /* 374 * Ceph setxattr request flags. 375 */ 376 #define CEPH_XATTR_CREATE 1 377 #define CEPH_XATTR_REPLACE 2 378 379 union ceph_mds_request_args { 380 struct { 381 __le32 mask; /* CEPH_CAP_* */ 382 } __attribute__ ((packed)) getattr; 383 struct { 384 __le32 mode; 385 __le32 uid; 386 __le32 gid; 387 struct ceph_timespec mtime; 388 struct ceph_timespec atime; 389 __le64 size, old_size; /* old_size needed by truncate */ 390 __le32 mask; /* CEPH_SETATTR_* */ 391 } __attribute__ ((packed)) setattr; 392 struct { 393 __le32 frag; /* which dir fragment */ 394 __le32 max_entries; /* how many dentries to grab */ 395 __le32 max_bytes; 396 } __attribute__ ((packed)) readdir; 397 struct { 398 __le32 mode; 399 __le32 rdev; 400 } __attribute__ ((packed)) mknod; 401 struct { 402 __le32 mode; 403 } __attribute__ ((packed)) mkdir; 404 struct { 405 __le32 flags; 406 __le32 mode; 407 __le32 stripe_unit; /* layout for newly created file */ 408 __le32 stripe_count; /* ... */ 409 __le32 object_size; 410 __le32 file_replication; 411 __le32 unused; /* used to be preferred osd */ 412 } __attribute__ ((packed)) open; 413 struct { 414 __le32 flags; 415 } __attribute__ ((packed)) setxattr; 416 struct { 417 struct ceph_file_layout layout; 418 } __attribute__ ((packed)) setlayout; 419 struct { 420 __u8 rule; /* currently fcntl or flock */ 421 __u8 type; /* shared, exclusive, remove*/ 422 __le64 pid; /* process id requesting the lock */ 423 __le64 pid_namespace; 424 __le64 start; /* initial location to lock */ 425 __le64 length; /* num bytes to lock from start */ 426 __u8 wait; /* will caller wait for lock to become available? */ 427 } __attribute__ ((packed)) filelock_change; 428 } __attribute__ ((packed)); 429 430 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 431 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 432 433 struct ceph_mds_request_head { 434 __le64 oldest_client_tid; 435 __le32 mdsmap_epoch; /* on client */ 436 __le32 flags; /* CEPH_MDS_FLAG_* */ 437 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 438 __le16 num_releases; /* # include cap/lease release records */ 439 __le32 op; /* mds op code */ 440 __le32 caller_uid, caller_gid; 441 __le64 ino; /* use this ino for openc, mkdir, mknod, 442 etc. (if replaying) */ 443 union ceph_mds_request_args args; 444 } __attribute__ ((packed)); 445 446 /* cap/lease release record */ 447 struct ceph_mds_request_release { 448 __le64 ino, cap_id; /* ino and unique cap id */ 449 __le32 caps, wanted; /* new issued, wanted */ 450 __le32 seq, issue_seq, mseq; 451 __le32 dname_seq; /* if releasing a dentry lease, a */ 452 __le32 dname_len; /* string follows. */ 453 } __attribute__ ((packed)); 454 455 /* client reply */ 456 struct ceph_mds_reply_head { 457 __le32 op; 458 __le32 result; 459 __le32 mdsmap_epoch; 460 __u8 safe; /* true if committed to disk */ 461 __u8 is_dentry, is_target; /* true if dentry, target inode records 462 are included with reply */ 463 } __attribute__ ((packed)); 464 465 /* one for each node split */ 466 struct ceph_frag_tree_split { 467 __le32 frag; /* this frag splits... */ 468 __le32 by; /* ...by this many bits */ 469 } __attribute__ ((packed)); 470 471 struct ceph_frag_tree_head { 472 __le32 nsplits; /* num ceph_frag_tree_split records */ 473 struct ceph_frag_tree_split splits[]; 474 } __attribute__ ((packed)); 475 476 /* capability issue, for bundling with mds reply */ 477 struct ceph_mds_reply_cap { 478 __le32 caps, wanted; /* caps issued, wanted */ 479 __le64 cap_id; 480 __le32 seq, mseq; 481 __le64 realm; /* snap realm */ 482 __u8 flags; /* CEPH_CAP_FLAG_* */ 483 } __attribute__ ((packed)); 484 485 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 486 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 487 488 /* inode record, for bundling with mds reply */ 489 struct ceph_mds_reply_inode { 490 __le64 ino; 491 __le64 snapid; 492 __le32 rdev; 493 __le64 version; /* inode version */ 494 __le64 xattr_version; /* version for xattr blob */ 495 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 496 struct ceph_file_layout layout; 497 struct ceph_timespec ctime, mtime, atime; 498 __le32 time_warp_seq; 499 __le64 size, max_size, truncate_size; 500 __le32 truncate_seq; 501 __le32 mode, uid, gid; 502 __le32 nlink; 503 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 504 struct ceph_timespec rctime; 505 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 506 } __attribute__ ((packed)); 507 /* followed by frag array, symlink string, dir layout, xattr blob */ 508 509 /* reply_lease follows dname, and reply_inode */ 510 struct ceph_mds_reply_lease { 511 __le16 mask; /* lease type(s) */ 512 __le32 duration_ms; /* lease duration */ 513 __le32 seq; 514 } __attribute__ ((packed)); 515 516 struct ceph_mds_reply_dirfrag { 517 __le32 frag; /* fragment */ 518 __le32 auth; /* auth mds, if this is a delegation point */ 519 __le32 ndist; /* number of mds' this is replicated on */ 520 __le32 dist[]; 521 } __attribute__ ((packed)); 522 523 #define CEPH_LOCK_FCNTL 1 524 #define CEPH_LOCK_FLOCK 2 525 526 #define CEPH_LOCK_SHARED 1 527 #define CEPH_LOCK_EXCL 2 528 #define CEPH_LOCK_UNLOCK 4 529 530 struct ceph_filelock { 531 __le64 start;/* file offset to start lock at */ 532 __le64 length; /* num bytes to lock; 0 for all following start */ 533 __le64 client; /* which client holds the lock */ 534 __le64 pid; /* process id holding the lock on the client */ 535 __le64 pid_namespace; 536 __u8 type; /* shared lock, exclusive lock, or unlock */ 537 } __attribute__ ((packed)); 538 539 540 /* file access modes */ 541 #define CEPH_FILE_MODE_PIN 0 542 #define CEPH_FILE_MODE_RD 1 543 #define CEPH_FILE_MODE_WR 2 544 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 545 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 546 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ 547 548 int ceph_flags_to_mode(int flags); 549 550 551 /* capability bits */ 552 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 553 554 /* generic cap bits */ 555 #define CEPH_CAP_GSHARED 1 /* client can reads */ 556 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 557 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 558 #define CEPH_CAP_GRD 8 /* (file) client can read */ 559 #define CEPH_CAP_GWR 16 /* (file) client can write */ 560 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 561 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 562 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 563 564 #define CEPH_CAP_SIMPLE_BITS 2 565 #define CEPH_CAP_FILE_BITS 8 566 567 /* per-lock shift */ 568 #define CEPH_CAP_SAUTH 2 569 #define CEPH_CAP_SLINK 4 570 #define CEPH_CAP_SXATTR 6 571 #define CEPH_CAP_SFILE 8 572 #define CEPH_CAP_SFLOCK 20 573 574 #define CEPH_CAP_BITS 22 575 576 /* composed values */ 577 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 578 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 579 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 580 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 581 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 582 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 583 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 584 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 585 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 586 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 587 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 588 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 589 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 590 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 591 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 592 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 593 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 594 595 596 /* cap masks (for getattr) */ 597 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 598 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 599 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 600 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 601 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 602 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 603 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 604 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 605 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 606 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 607 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 608 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 609 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 610 CEPH_CAP_AUTH_SHARED | \ 611 CEPH_CAP_LINK_SHARED | \ 612 CEPH_CAP_FILE_SHARED | \ 613 CEPH_CAP_XATTR_SHARED) 614 615 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 616 CEPH_CAP_LINK_SHARED | \ 617 CEPH_CAP_XATTR_SHARED | \ 618 CEPH_CAP_FILE_SHARED) 619 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 620 CEPH_CAP_FILE_CACHE) 621 622 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 623 CEPH_CAP_LINK_EXCL | \ 624 CEPH_CAP_XATTR_EXCL | \ 625 CEPH_CAP_FILE_EXCL) 626 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 627 CEPH_CAP_FILE_EXCL) 628 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 629 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 630 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 631 CEPH_CAP_PIN) 632 633 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 634 CEPH_LOCK_IXATTR) 635 636 int ceph_caps_for_mode(int mode); 637 638 enum { 639 CEPH_CAP_OP_GRANT, /* mds->client grant */ 640 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 641 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 642 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 643 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 644 CEPH_CAP_OP_UPDATE, /* client->mds update */ 645 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 646 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 647 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 648 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 649 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 650 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 651 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 652 }; 653 654 extern const char *ceph_cap_op_name(int op); 655 656 /* 657 * caps message, used for capability callbacks, acks, requests, etc. 658 */ 659 struct ceph_mds_caps { 660 __le32 op; /* CEPH_CAP_OP_* */ 661 __le64 ino, realm; 662 __le64 cap_id; 663 __le32 seq, issue_seq; 664 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 665 __le32 migrate_seq; 666 __le64 snap_follows; 667 __le32 snap_trace_len; 668 669 /* authlock */ 670 __le32 uid, gid, mode; 671 672 /* linklock */ 673 __le32 nlink; 674 675 /* xattrlock */ 676 __le32 xattr_len; 677 __le64 xattr_version; 678 679 /* filelock */ 680 __le64 size, max_size, truncate_size; 681 __le32 truncate_seq; 682 struct ceph_timespec mtime, atime, ctime; 683 struct ceph_file_layout layout; 684 __le32 time_warp_seq; 685 } __attribute__ ((packed)); 686 687 struct ceph_mds_cap_peer { 688 __le64 cap_id; 689 __le32 seq; 690 __le32 mseq; 691 __le32 mds; 692 __u8 flags; 693 } __attribute__ ((packed)); 694 695 /* cap release msg head */ 696 struct ceph_mds_cap_release { 697 __le32 num; /* number of cap_items that follow */ 698 } __attribute__ ((packed)); 699 700 struct ceph_mds_cap_item { 701 __le64 ino; 702 __le64 cap_id; 703 __le32 migrate_seq, seq; 704 } __attribute__ ((packed)); 705 706 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 707 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 708 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 709 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 710 711 extern const char *ceph_lease_op_name(int o); 712 713 /* lease msg header */ 714 struct ceph_mds_lease { 715 __u8 action; /* CEPH_MDS_LEASE_* */ 716 __le16 mask; /* which lease */ 717 __le64 ino; 718 __le64 first, last; /* snap range */ 719 __le32 seq; 720 __le32 duration_ms; /* duration of renewal */ 721 } __attribute__ ((packed)); 722 /* followed by a __le32+string for dname */ 723 724 /* client reconnect */ 725 struct ceph_mds_cap_reconnect { 726 __le64 cap_id; 727 __le32 wanted; 728 __le32 issued; 729 __le64 snaprealm; 730 __le64 pathbase; /* base ino for our path to this ino */ 731 __le32 flock_len; /* size of flock state blob, if any */ 732 } __attribute__ ((packed)); 733 /* followed by flock blob */ 734 735 struct ceph_mds_cap_reconnect_v1 { 736 __le64 cap_id; 737 __le32 wanted; 738 __le32 issued; 739 __le64 size; 740 struct ceph_timespec mtime, atime; 741 __le64 snaprealm; 742 __le64 pathbase; /* base ino for our path to this ino */ 743 } __attribute__ ((packed)); 744 745 struct ceph_mds_snaprealm_reconnect { 746 __le64 ino; /* snap realm base */ 747 __le64 seq; /* snap seq for this snap realm */ 748 __le64 parent; /* parent realm */ 749 } __attribute__ ((packed)); 750 751 /* 752 * snaps 753 */ 754 enum { 755 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 756 CEPH_SNAP_OP_CREATE, 757 CEPH_SNAP_OP_DESTROY, 758 CEPH_SNAP_OP_SPLIT, 759 }; 760 761 extern const char *ceph_snap_op_name(int o); 762 763 /* snap msg header */ 764 struct ceph_mds_snap_head { 765 __le32 op; /* CEPH_SNAP_OP_* */ 766 __le64 split; /* ino to split off, if any */ 767 __le32 num_split_inos; /* # inos belonging to new child realm */ 768 __le32 num_split_realms; /* # child realms udner new child realm */ 769 __le32 trace_len; /* size of snap trace blob */ 770 } __attribute__ ((packed)); 771 /* followed by split ino list, then split realms, then the trace blob */ 772 773 /* 774 * encode info about a snaprealm, as viewed by a client 775 */ 776 struct ceph_mds_snap_realm { 777 __le64 ino; /* ino */ 778 __le64 created; /* snap: when created */ 779 __le64 parent; /* ino: parent realm */ 780 __le64 parent_since; /* snap: same parent since */ 781 __le64 seq; /* snap: version */ 782 __le32 num_snaps; 783 __le32 num_prior_parent_snaps; 784 } __attribute__ ((packed)); 785 /* followed by my snap list, then prior parent snap list */ 786 787 #endif 788