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 CEPH_MDS_OP_LOOKUPNAME = 0x00105, 336 337 CEPH_MDS_OP_SETXATTR = 0x01105, 338 CEPH_MDS_OP_RMXATTR = 0x01106, 339 CEPH_MDS_OP_SETLAYOUT = 0x01107, 340 CEPH_MDS_OP_SETATTR = 0x01108, 341 CEPH_MDS_OP_SETFILELOCK= 0x01109, 342 CEPH_MDS_OP_GETFILELOCK= 0x00110, 343 CEPH_MDS_OP_SETDIRLAYOUT=0x0110a, 344 345 CEPH_MDS_OP_MKNOD = 0x01201, 346 CEPH_MDS_OP_LINK = 0x01202, 347 CEPH_MDS_OP_UNLINK = 0x01203, 348 CEPH_MDS_OP_RENAME = 0x01204, 349 CEPH_MDS_OP_MKDIR = 0x01220, 350 CEPH_MDS_OP_RMDIR = 0x01221, 351 CEPH_MDS_OP_SYMLINK = 0x01222, 352 353 CEPH_MDS_OP_CREATE = 0x01301, 354 CEPH_MDS_OP_OPEN = 0x00302, 355 CEPH_MDS_OP_READDIR = 0x00305, 356 357 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 358 CEPH_MDS_OP_MKSNAP = 0x01400, 359 CEPH_MDS_OP_RMSNAP = 0x01401, 360 CEPH_MDS_OP_LSSNAP = 0x00402, 361 }; 362 363 extern const char *ceph_mds_op_name(int op); 364 365 366 #define CEPH_SETATTR_MODE 1 367 #define CEPH_SETATTR_UID 2 368 #define CEPH_SETATTR_GID 4 369 #define CEPH_SETATTR_MTIME 8 370 #define CEPH_SETATTR_ATIME 16 371 #define CEPH_SETATTR_SIZE 32 372 #define CEPH_SETATTR_CTIME 64 373 374 /* 375 * Ceph setxattr request flags. 376 */ 377 #define CEPH_XATTR_CREATE (1 << 0) 378 #define CEPH_XATTR_REPLACE (1 << 1) 379 #define CEPH_XATTR_REMOVE (1 << 31) 380 381 union ceph_mds_request_args { 382 struct { 383 __le32 mask; /* CEPH_CAP_* */ 384 } __attribute__ ((packed)) getattr; 385 struct { 386 __le32 mode; 387 __le32 uid; 388 __le32 gid; 389 struct ceph_timespec mtime; 390 struct ceph_timespec atime; 391 __le64 size, old_size; /* old_size needed by truncate */ 392 __le32 mask; /* CEPH_SETATTR_* */ 393 } __attribute__ ((packed)) setattr; 394 struct { 395 __le32 frag; /* which dir fragment */ 396 __le32 max_entries; /* how many dentries to grab */ 397 __le32 max_bytes; 398 } __attribute__ ((packed)) readdir; 399 struct { 400 __le32 mode; 401 __le32 rdev; 402 } __attribute__ ((packed)) mknod; 403 struct { 404 __le32 mode; 405 } __attribute__ ((packed)) mkdir; 406 struct { 407 __le32 flags; 408 __le32 mode; 409 __le32 stripe_unit; /* layout for newly created file */ 410 __le32 stripe_count; /* ... */ 411 __le32 object_size; 412 __le32 file_replication; 413 __le32 unused; /* used to be preferred osd */ 414 } __attribute__ ((packed)) open; 415 struct { 416 __le32 flags; 417 } __attribute__ ((packed)) setxattr; 418 struct { 419 struct ceph_file_layout layout; 420 } __attribute__ ((packed)) setlayout; 421 struct { 422 __u8 rule; /* currently fcntl or flock */ 423 __u8 type; /* shared, exclusive, remove*/ 424 __le64 owner; /* owner of the lock */ 425 __le64 pid; /* process id requesting the lock */ 426 __le64 start; /* initial location to lock */ 427 __le64 length; /* num bytes to lock from start */ 428 __u8 wait; /* will caller wait for lock to become available? */ 429 } __attribute__ ((packed)) filelock_change; 430 } __attribute__ ((packed)); 431 432 #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 433 #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 434 435 struct ceph_mds_request_head { 436 __le64 oldest_client_tid; 437 __le32 mdsmap_epoch; /* on client */ 438 __le32 flags; /* CEPH_MDS_FLAG_* */ 439 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 440 __le16 num_releases; /* # include cap/lease release records */ 441 __le32 op; /* mds op code */ 442 __le32 caller_uid, caller_gid; 443 __le64 ino; /* use this ino for openc, mkdir, mknod, 444 etc. (if replaying) */ 445 union ceph_mds_request_args args; 446 } __attribute__ ((packed)); 447 448 /* cap/lease release record */ 449 struct ceph_mds_request_release { 450 __le64 ino, cap_id; /* ino and unique cap id */ 451 __le32 caps, wanted; /* new issued, wanted */ 452 __le32 seq, issue_seq, mseq; 453 __le32 dname_seq; /* if releasing a dentry lease, a */ 454 __le32 dname_len; /* string follows. */ 455 } __attribute__ ((packed)); 456 457 /* client reply */ 458 struct ceph_mds_reply_head { 459 __le32 op; 460 __le32 result; 461 __le32 mdsmap_epoch; 462 __u8 safe; /* true if committed to disk */ 463 __u8 is_dentry, is_target; /* true if dentry, target inode records 464 are included with reply */ 465 } __attribute__ ((packed)); 466 467 /* one for each node split */ 468 struct ceph_frag_tree_split { 469 __le32 frag; /* this frag splits... */ 470 __le32 by; /* ...by this many bits */ 471 } __attribute__ ((packed)); 472 473 struct ceph_frag_tree_head { 474 __le32 nsplits; /* num ceph_frag_tree_split records */ 475 struct ceph_frag_tree_split splits[]; 476 } __attribute__ ((packed)); 477 478 /* capability issue, for bundling with mds reply */ 479 struct ceph_mds_reply_cap { 480 __le32 caps, wanted; /* caps issued, wanted */ 481 __le64 cap_id; 482 __le32 seq, mseq; 483 __le64 realm; /* snap realm */ 484 __u8 flags; /* CEPH_CAP_FLAG_* */ 485 } __attribute__ ((packed)); 486 487 #define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 488 #define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 489 490 /* inode record, for bundling with mds reply */ 491 struct ceph_mds_reply_inode { 492 __le64 ino; 493 __le64 snapid; 494 __le32 rdev; 495 __le64 version; /* inode version */ 496 __le64 xattr_version; /* version for xattr blob */ 497 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 498 struct ceph_file_layout layout; 499 struct ceph_timespec ctime, mtime, atime; 500 __le32 time_warp_seq; 501 __le64 size, max_size, truncate_size; 502 __le32 truncate_seq; 503 __le32 mode, uid, gid; 504 __le32 nlink; 505 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 506 struct ceph_timespec rctime; 507 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 508 } __attribute__ ((packed)); 509 /* followed by frag array, symlink string, dir layout, xattr blob */ 510 511 /* reply_lease follows dname, and reply_inode */ 512 struct ceph_mds_reply_lease { 513 __le16 mask; /* lease type(s) */ 514 __le32 duration_ms; /* lease duration */ 515 __le32 seq; 516 } __attribute__ ((packed)); 517 518 struct ceph_mds_reply_dirfrag { 519 __le32 frag; /* fragment */ 520 __le32 auth; /* auth mds, if this is a delegation point */ 521 __le32 ndist; /* number of mds' this is replicated on */ 522 __le32 dist[]; 523 } __attribute__ ((packed)); 524 525 #define CEPH_LOCK_FCNTL 1 526 #define CEPH_LOCK_FLOCK 2 527 528 #define CEPH_LOCK_SHARED 1 529 #define CEPH_LOCK_EXCL 2 530 #define CEPH_LOCK_UNLOCK 4 531 532 struct ceph_filelock { 533 __le64 start;/* file offset to start lock at */ 534 __le64 length; /* num bytes to lock; 0 for all following start */ 535 __le64 client; /* which client holds the lock */ 536 __le64 owner; /* owner the lock */ 537 __le64 pid; /* process id holding the lock on the client */ 538 __u8 type; /* shared lock, exclusive lock, or unlock */ 539 } __attribute__ ((packed)); 540 541 542 /* file access modes */ 543 #define CEPH_FILE_MODE_PIN 0 544 #define CEPH_FILE_MODE_RD 1 545 #define CEPH_FILE_MODE_WR 2 546 #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 547 #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 548 #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ 549 550 int ceph_flags_to_mode(int flags); 551 552 553 /* capability bits */ 554 #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 555 556 /* generic cap bits */ 557 #define CEPH_CAP_GSHARED 1 /* client can reads */ 558 #define CEPH_CAP_GEXCL 2 /* client can read and update */ 559 #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 560 #define CEPH_CAP_GRD 8 /* (file) client can read */ 561 #define CEPH_CAP_GWR 16 /* (file) client can write */ 562 #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 563 #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 564 #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 565 566 #define CEPH_CAP_SIMPLE_BITS 2 567 #define CEPH_CAP_FILE_BITS 8 568 569 /* per-lock shift */ 570 #define CEPH_CAP_SAUTH 2 571 #define CEPH_CAP_SLINK 4 572 #define CEPH_CAP_SXATTR 6 573 #define CEPH_CAP_SFILE 8 574 #define CEPH_CAP_SFLOCK 20 575 576 #define CEPH_CAP_BITS 22 577 578 /* composed values */ 579 #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 580 #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 581 #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 582 #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 583 #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 584 #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 585 #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 586 #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 587 #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 588 #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 589 #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 590 #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 591 #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 592 #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 593 #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 594 #define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 595 #define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 596 597 598 /* cap masks (for getattr) */ 599 #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 600 #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 601 #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 602 #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 603 #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 604 #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 605 #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 606 #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 607 #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 608 #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 609 #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 610 #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 611 #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 612 CEPH_CAP_AUTH_SHARED | \ 613 CEPH_CAP_LINK_SHARED | \ 614 CEPH_CAP_FILE_SHARED | \ 615 CEPH_CAP_XATTR_SHARED) 616 617 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 618 CEPH_CAP_LINK_SHARED | \ 619 CEPH_CAP_XATTR_SHARED | \ 620 CEPH_CAP_FILE_SHARED) 621 #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 622 CEPH_CAP_FILE_CACHE) 623 624 #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 625 CEPH_CAP_LINK_EXCL | \ 626 CEPH_CAP_XATTR_EXCL | \ 627 CEPH_CAP_FILE_EXCL) 628 #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 629 CEPH_CAP_FILE_EXCL) 630 #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 631 #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 632 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 633 CEPH_CAP_PIN) 634 635 #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 636 CEPH_LOCK_IXATTR) 637 638 int ceph_caps_for_mode(int mode); 639 640 enum { 641 CEPH_CAP_OP_GRANT, /* mds->client grant */ 642 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 643 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 644 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 645 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 646 CEPH_CAP_OP_UPDATE, /* client->mds update */ 647 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 648 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 649 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 650 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 651 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 652 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 653 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 654 }; 655 656 extern const char *ceph_cap_op_name(int op); 657 658 /* 659 * caps message, used for capability callbacks, acks, requests, etc. 660 */ 661 struct ceph_mds_caps { 662 __le32 op; /* CEPH_CAP_OP_* */ 663 __le64 ino, realm; 664 __le64 cap_id; 665 __le32 seq, issue_seq; 666 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 667 __le32 migrate_seq; 668 __le64 snap_follows; 669 __le32 snap_trace_len; 670 671 /* authlock */ 672 __le32 uid, gid, mode; 673 674 /* linklock */ 675 __le32 nlink; 676 677 /* xattrlock */ 678 __le32 xattr_len; 679 __le64 xattr_version; 680 681 /* filelock */ 682 __le64 size, max_size, truncate_size; 683 __le32 truncate_seq; 684 struct ceph_timespec mtime, atime, ctime; 685 struct ceph_file_layout layout; 686 __le32 time_warp_seq; 687 } __attribute__ ((packed)); 688 689 struct ceph_mds_cap_peer { 690 __le64 cap_id; 691 __le32 seq; 692 __le32 mseq; 693 __le32 mds; 694 __u8 flags; 695 } __attribute__ ((packed)); 696 697 /* cap release msg head */ 698 struct ceph_mds_cap_release { 699 __le32 num; /* number of cap_items that follow */ 700 } __attribute__ ((packed)); 701 702 struct ceph_mds_cap_item { 703 __le64 ino; 704 __le64 cap_id; 705 __le32 migrate_seq, seq; 706 } __attribute__ ((packed)); 707 708 #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 709 #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 710 #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 711 #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 712 713 extern const char *ceph_lease_op_name(int o); 714 715 /* lease msg header */ 716 struct ceph_mds_lease { 717 __u8 action; /* CEPH_MDS_LEASE_* */ 718 __le16 mask; /* which lease */ 719 __le64 ino; 720 __le64 first, last; /* snap range */ 721 __le32 seq; 722 __le32 duration_ms; /* duration of renewal */ 723 } __attribute__ ((packed)); 724 /* followed by a __le32+string for dname */ 725 726 /* client reconnect */ 727 struct ceph_mds_cap_reconnect { 728 __le64 cap_id; 729 __le32 wanted; 730 __le32 issued; 731 __le64 snaprealm; 732 __le64 pathbase; /* base ino for our path to this ino */ 733 __le32 flock_len; /* size of flock state blob, if any */ 734 } __attribute__ ((packed)); 735 /* followed by flock blob */ 736 737 struct ceph_mds_cap_reconnect_v1 { 738 __le64 cap_id; 739 __le32 wanted; 740 __le32 issued; 741 __le64 size; 742 struct ceph_timespec mtime, atime; 743 __le64 snaprealm; 744 __le64 pathbase; /* base ino for our path to this ino */ 745 } __attribute__ ((packed)); 746 747 struct ceph_mds_snaprealm_reconnect { 748 __le64 ino; /* snap realm base */ 749 __le64 seq; /* snap seq for this snap realm */ 750 __le64 parent; /* parent realm */ 751 } __attribute__ ((packed)); 752 753 /* 754 * snaps 755 */ 756 enum { 757 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 758 CEPH_SNAP_OP_CREATE, 759 CEPH_SNAP_OP_DESTROY, 760 CEPH_SNAP_OP_SPLIT, 761 }; 762 763 extern const char *ceph_snap_op_name(int o); 764 765 /* snap msg header */ 766 struct ceph_mds_snap_head { 767 __le32 op; /* CEPH_SNAP_OP_* */ 768 __le64 split; /* ino to split off, if any */ 769 __le32 num_split_inos; /* # inos belonging to new child realm */ 770 __le32 num_split_realms; /* # child realms udner new child realm */ 771 __le32 trace_len; /* size of snap trace blob */ 772 } __attribute__ ((packed)); 773 /* followed by split ino list, then split realms, then the trace blob */ 774 775 /* 776 * encode info about a snaprealm, as viewed by a client 777 */ 778 struct ceph_mds_snap_realm { 779 __le64 ino; /* ino */ 780 __le64 created; /* snap: when created */ 781 __le64 parent; /* ino: parent realm */ 782 __le64 parent_since; /* snap: same parent since */ 783 __le64 seq; /* snap: version */ 784 __le32 num_snaps; 785 __le32 num_prior_parent_snaps; 786 } __attribute__ ((packed)); 787 /* followed by my snap list, then prior parent snap list */ 788 789 #endif 790