1/* 2 * ceph_fs.h - Ceph constants and data types to share between kernel and 3 * user space. 4 * 5 * Most types in this file are defined as little-endian, and are 6 * primarily intended to describe data structures that pass over the 7 * wire or that are stored on disk. 8 * 9 * LGPL2 10 */ 11 12#ifndef CEPH_FS_H 13#define CEPH_FS_H 14 15#include "msgr.h" 16#include "rados.h" 17 18/* 19 * subprotocol versions. when specific messages types or high-level 20 * protocols change, bump the affected components. we keep rev 21 * internal cluster protocols separately from the public, 22 * client-facing protocol. 23 */ 24#define CEPH_OSD_PROTOCOL 8 /* cluster internal */ 25#define CEPH_MDS_PROTOCOL 12 /* cluster internal */ 26#define CEPH_MON_PROTOCOL 5 /* cluster internal */ 27#define CEPH_OSDC_PROTOCOL 24 /* server/client */ 28#define CEPH_MDSC_PROTOCOL 32 /* server/client */ 29#define CEPH_MONC_PROTOCOL 15 /* server/client */ 30 31 32#define CEPH_INO_ROOT 1 33#define CEPH_INO_CEPH 2 /* hidden .ceph dir */ 34 35/* arbitrary limit on max # of monitors (cluster of 3 is typical) */ 36#define CEPH_MAX_MON 31 37 38 39/* 40 * feature bits 41 */ 42#define CEPH_FEATURE_UID (1<<0) 43#define CEPH_FEATURE_NOSRCADDR (1<<1) 44#define CEPH_FEATURE_MONCLOCKCHECK (1<<2) 45#define CEPH_FEATURE_FLOCK (1<<3) 46 47 48/* 49 * ceph_file_layout - describe data layout for a file/inode 50 */ 51struct ceph_file_layout { 52 /* file -> object mapping */ 53 __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple 54 of page size. */ 55 __le32 fl_stripe_count; /* over this many objects */ 56 __le32 fl_object_size; /* until objects are this big, then move to 57 new objects */ 58 __le32 fl_cas_hash; /* 0 = none; 1 = sha256 */ 59 60 /* pg -> disk layout */ 61 __le32 fl_object_stripe_unit; /* for per-object parity, if any */ 62 63 /* object -> pg layout */ 64 __le32 fl_pg_preferred; /* preferred primary for pg (-1 for none) */ 65 __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */ 66} __attribute__ ((packed)); 67 68#define CEPH_MIN_STRIPE_UNIT 65536 69 70int ceph_file_layout_is_valid(const struct ceph_file_layout *layout); 71 72 73/* crypto algorithms */ 74#define CEPH_CRYPTO_NONE 0x0 75#define CEPH_CRYPTO_AES 0x1 76 77#define CEPH_AES_IV "cephsageyudagreg" 78 79/* security/authentication protocols */ 80#define CEPH_AUTH_UNKNOWN 0x0 81#define CEPH_AUTH_NONE 0x1 82#define CEPH_AUTH_CEPHX 0x2 83 84#define CEPH_AUTH_UID_DEFAULT ((__u64) -1) 85 86 87/********************************************* 88 * message layer 89 */ 90 91/* 92 * message types 93 */ 94 95/* misc */ 96#define CEPH_MSG_SHUTDOWN 1 97#define CEPH_MSG_PING 2 98 99/* client <-> monitor */ 100#define CEPH_MSG_MON_MAP 4 101#define CEPH_MSG_MON_GET_MAP 5 102#define CEPH_MSG_STATFS 13 103#define CEPH_MSG_STATFS_REPLY 14 104#define CEPH_MSG_MON_SUBSCRIBE 15 105#define CEPH_MSG_MON_SUBSCRIBE_ACK 16 106#define CEPH_MSG_AUTH 17 107#define CEPH_MSG_AUTH_REPLY 18 108 109/* client <-> mds */ 110#define CEPH_MSG_MDS_MAP 21 111 112#define CEPH_MSG_CLIENT_SESSION 22 113#define CEPH_MSG_CLIENT_RECONNECT 23 114 115#define CEPH_MSG_CLIENT_REQUEST 24 116#define CEPH_MSG_CLIENT_REQUEST_FORWARD 25 117#define CEPH_MSG_CLIENT_REPLY 26 118#define CEPH_MSG_CLIENT_CAPS 0x310 119#define CEPH_MSG_CLIENT_LEASE 0x311 120#define CEPH_MSG_CLIENT_SNAP 0x312 121#define CEPH_MSG_CLIENT_CAPRELEASE 0x313 122 123/* pool ops */ 124#define CEPH_MSG_POOLOP_REPLY 48 125#define CEPH_MSG_POOLOP 49 126 127 128/* osd */ 129#define CEPH_MSG_OSD_MAP 41 130#define CEPH_MSG_OSD_OP 42 131#define CEPH_MSG_OSD_OPREPLY 43 132 133/* pool operations */ 134enum { 135 POOL_OP_CREATE = 0x01, 136 POOL_OP_DELETE = 0x02, 137 POOL_OP_AUID_CHANGE = 0x03, 138 POOL_OP_CREATE_SNAP = 0x11, 139 POOL_OP_DELETE_SNAP = 0x12, 140 POOL_OP_CREATE_UNMANAGED_SNAP = 0x21, 141 POOL_OP_DELETE_UNMANAGED_SNAP = 0x22, 142}; 143 144struct ceph_mon_request_header { 145 __le64 have_version; 146 __le16 session_mon; 147 __le64 session_mon_tid; 148} __attribute__ ((packed)); 149 150struct ceph_mon_statfs { 151 struct ceph_mon_request_header monhdr; 152 struct ceph_fsid fsid; 153} __attribute__ ((packed)); 154 155struct ceph_statfs { 156 __le64 kb, kb_used, kb_avail; 157 __le64 num_objects; 158} __attribute__ ((packed)); 159 160struct ceph_mon_statfs_reply { 161 struct ceph_fsid fsid; 162 __le64 version; 163 struct ceph_statfs st; 164} __attribute__ ((packed)); 165 166const char *ceph_pool_op_name(int op); 167 168struct ceph_mon_poolop { 169 struct ceph_mon_request_header monhdr; 170 struct ceph_fsid fsid; 171 __le32 pool; 172 __le32 op; 173 __le64 auid; 174 __le64 snapid; 175 __le32 name_len; 176} __attribute__ ((packed)); 177 178struct ceph_mon_poolop_reply { 179 struct ceph_mon_request_header monhdr; 180 struct ceph_fsid fsid; 181 __le32 reply_code; 182 __le32 epoch; 183 char has_data; 184 char data[0]; 185} __attribute__ ((packed)); 186 187struct ceph_mon_unmanaged_snap { 188 __le64 snapid; 189} __attribute__ ((packed)); 190 191struct ceph_osd_getmap { 192 struct ceph_mon_request_header monhdr; 193 struct ceph_fsid fsid; 194 __le32 start; 195} __attribute__ ((packed)); 196 197struct ceph_mds_getmap { 198 struct ceph_mon_request_header monhdr; 199 struct ceph_fsid fsid; 200} __attribute__ ((packed)); 201 202struct ceph_client_mount { 203 struct ceph_mon_request_header monhdr; 204} __attribute__ ((packed)); 205 206struct ceph_mon_subscribe_item { 207 __le64 have_version; __le64 have; 208 __u8 onetime; 209} __attribute__ ((packed)); 210 211struct ceph_mon_subscribe_ack { 212 __le32 duration; /* seconds */ 213 struct ceph_fsid fsid; 214} __attribute__ ((packed)); 215 216/* 217 * mds states 218 * > 0 -> in 219 * <= 0 -> out 220 */ 221#define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ 222#define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. 223 empty log. */ 224#define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ 225#define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ 226#define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ 227#define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ 228#define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ 229 230#define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ 231#define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed 232 operations (import, rename, etc.) */ 233#define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ 234#define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ 235#define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ 236#define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ 237#define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ 238 239extern const char *ceph_mds_state_name(int s); 240 241 242/* 243 * metadata lock types. 244 * - these are bitmasks.. we can compose them 245 * - they also define the lock ordering by the MDS 246 * - a few of these are internal to the mds 247 */ 248#define CEPH_LOCK_DVERSION 1 249#define CEPH_LOCK_DN 2 250#define CEPH_LOCK_ISNAP 16 251#define CEPH_LOCK_IVERSION 32 /* mds internal */ 252#define CEPH_LOCK_IFILE 64 253#define CEPH_LOCK_IAUTH 128 254#define CEPH_LOCK_ILINK 256 255#define CEPH_LOCK_IDFT 512 /* dir frag tree */ 256#define CEPH_LOCK_INEST 1024 /* mds internal */ 257#define CEPH_LOCK_IXATTR 2048 258#define CEPH_LOCK_IFLOCK 4096 /* advisory file locks */ 259#define CEPH_LOCK_INO 8192 /* immutable inode bits; not a lock */ 260 261/* client_session ops */ 262enum { 263 CEPH_SESSION_REQUEST_OPEN, 264 CEPH_SESSION_OPEN, 265 CEPH_SESSION_REQUEST_CLOSE, 266 CEPH_SESSION_CLOSE, 267 CEPH_SESSION_REQUEST_RENEWCAPS, 268 CEPH_SESSION_RENEWCAPS, 269 CEPH_SESSION_STALE, 270 CEPH_SESSION_RECALL_STATE, 271}; 272 273extern const char *ceph_session_op_name(int op); 274 275struct ceph_mds_session_head { 276 __le32 op; 277 __le64 seq; 278 struct ceph_timespec stamp; 279 __le32 max_caps, max_leases; 280} __attribute__ ((packed)); 281 282/* client_request */ 283/* 284 * metadata ops. 285 * & 0x001000 -> write op 286 * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). 287 & & 0x100000 -> use weird ino/path trace 288 */ 289#define CEPH_MDS_OP_WRITE 0x001000 290enum { 291 CEPH_MDS_OP_LOOKUP = 0x00100, 292 CEPH_MDS_OP_GETATTR = 0x00101, 293 CEPH_MDS_OP_LOOKUPHASH = 0x00102, 294 CEPH_MDS_OP_LOOKUPPARENT = 0x00103, 295 296 CEPH_MDS_OP_SETXATTR = 0x01105, 297 CEPH_MDS_OP_RMXATTR = 0x01106, 298 CEPH_MDS_OP_SETLAYOUT = 0x01107, 299 CEPH_MDS_OP_SETATTR = 0x01108, 300 CEPH_MDS_OP_SETFILELOCK= 0x01109, 301 CEPH_MDS_OP_GETFILELOCK= 0x00110, 302 303 CEPH_MDS_OP_MKNOD = 0x01201, 304 CEPH_MDS_OP_LINK = 0x01202, 305 CEPH_MDS_OP_UNLINK = 0x01203, 306 CEPH_MDS_OP_RENAME = 0x01204, 307 CEPH_MDS_OP_MKDIR = 0x01220, 308 CEPH_MDS_OP_RMDIR = 0x01221, 309 CEPH_MDS_OP_SYMLINK = 0x01222, 310 311 CEPH_MDS_OP_CREATE = 0x01301, 312 CEPH_MDS_OP_OPEN = 0x00302, 313 CEPH_MDS_OP_READDIR = 0x00305, 314 315 CEPH_MDS_OP_LOOKUPSNAP = 0x00400, 316 CEPH_MDS_OP_MKSNAP = 0x01400, 317 CEPH_MDS_OP_RMSNAP = 0x01401, 318 CEPH_MDS_OP_LSSNAP = 0x00402, 319}; 320 321extern const char *ceph_mds_op_name(int op); 322 323 324#define CEPH_SETATTR_MODE 1 325#define CEPH_SETATTR_UID 2 326#define CEPH_SETATTR_GID 4 327#define CEPH_SETATTR_MTIME 8 328#define CEPH_SETATTR_ATIME 16 329#define CEPH_SETATTR_SIZE 32 330#define CEPH_SETATTR_CTIME 64 331 332union ceph_mds_request_args { 333 struct { 334 __le32 mask; /* CEPH_CAP_* */ 335 } __attribute__ ((packed)) getattr; 336 struct { 337 __le32 mode; 338 __le32 uid; 339 __le32 gid; 340 struct ceph_timespec mtime; 341 struct ceph_timespec atime; 342 __le64 size, old_size; /* old_size needed by truncate */ 343 __le32 mask; /* CEPH_SETATTR_* */ 344 } __attribute__ ((packed)) setattr; 345 struct { 346 __le32 frag; /* which dir fragment */ 347 __le32 max_entries; /* how many dentries to grab */ 348 __le32 max_bytes; 349 } __attribute__ ((packed)) readdir; 350 struct { 351 __le32 mode; 352 __le32 rdev; 353 } __attribute__ ((packed)) mknod; 354 struct { 355 __le32 mode; 356 } __attribute__ ((packed)) mkdir; 357 struct { 358 __le32 flags; 359 __le32 mode; 360 __le32 stripe_unit; /* layout for newly created file */ 361 __le32 stripe_count; /* ... */ 362 __le32 object_size; 363 __le32 file_replication; 364 __le32 preferred; 365 } __attribute__ ((packed)) open; 366 struct { 367 __le32 flags; 368 } __attribute__ ((packed)) setxattr; 369 struct { 370 struct ceph_file_layout layout; 371 } __attribute__ ((packed)) setlayout; 372 struct { 373 __u8 rule; /* currently fcntl or flock */ 374 __u8 type; /* shared, exclusive, remove*/ 375 __le64 pid; /* process id requesting the lock */ 376 __le64 pid_namespace; 377 __le64 start; /* initial location to lock */ 378 __le64 length; /* num bytes to lock from start */ 379 __u8 wait; /* will caller wait for lock to become available? */ 380 } __attribute__ ((packed)) filelock_change; 381} __attribute__ ((packed)); 382 383#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 384#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 385 386struct ceph_mds_request_head { 387 __le64 oldest_client_tid; 388 __le32 mdsmap_epoch; /* on client */ 389 __le32 flags; /* CEPH_MDS_FLAG_* */ 390 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 391 __le16 num_releases; /* # include cap/lease release records */ 392 __le32 op; /* mds op code */ 393 __le32 caller_uid, caller_gid; 394 __le64 ino; /* use this ino for openc, mkdir, mknod, 395 etc. (if replaying) */ 396 union ceph_mds_request_args args; 397} __attribute__ ((packed)); 398 399/* cap/lease release record */ 400struct ceph_mds_request_release { 401 __le64 ino, cap_id; /* ino and unique cap id */ 402 __le32 caps, wanted; /* new issued, wanted */ 403 __le32 seq, issue_seq, mseq; 404 __le32 dname_seq; /* if releasing a dentry lease, a */ 405 __le32 dname_len; /* string follows. */ 406} __attribute__ ((packed)); 407 408/* client reply */ 409struct ceph_mds_reply_head { 410 __le32 op; 411 __le32 result; 412 __le32 mdsmap_epoch; 413 __u8 safe; /* true if committed to disk */ 414 __u8 is_dentry, is_target; /* true if dentry, target inode records 415 are included with reply */ 416} __attribute__ ((packed)); 417 418/* one for each node split */ 419struct ceph_frag_tree_split { 420 __le32 frag; /* this frag splits... */ 421 __le32 by; /* ...by this many bits */ 422} __attribute__ ((packed)); 423 424struct ceph_frag_tree_head { 425 __le32 nsplits; /* num ceph_frag_tree_split records */ 426 struct ceph_frag_tree_split splits[]; 427} __attribute__ ((packed)); 428 429/* capability issue, for bundling with mds reply */ 430struct ceph_mds_reply_cap { 431 __le32 caps, wanted; /* caps issued, wanted */ 432 __le64 cap_id; 433 __le32 seq, mseq; 434 __le64 realm; /* snap realm */ 435 __u8 flags; /* CEPH_CAP_FLAG_* */ 436} __attribute__ ((packed)); 437 438#define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */ 439 440/* inode record, for bundling with mds reply */ 441struct ceph_mds_reply_inode { 442 __le64 ino; 443 __le64 snapid; 444 __le32 rdev; 445 __le64 version; /* inode version */ 446 __le64 xattr_version; /* version for xattr blob */ 447 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 448 struct ceph_file_layout layout; 449 struct ceph_timespec ctime, mtime, atime; 450 __le32 time_warp_seq; 451 __le64 size, max_size, truncate_size; 452 __le32 truncate_seq; 453 __le32 mode, uid, gid; 454 __le32 nlink; 455 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 456 struct ceph_timespec rctime; 457 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 458} __attribute__ ((packed)); 459/* followed by frag array, then symlink string, then xattr blob */ 460 461/* reply_lease follows dname, and reply_inode */ 462struct ceph_mds_reply_lease { 463 __le16 mask; /* lease type(s) */ 464 __le32 duration_ms; /* lease duration */ 465 __le32 seq; 466} __attribute__ ((packed)); 467 468struct ceph_mds_reply_dirfrag { 469 __le32 frag; /* fragment */ 470 __le32 auth; /* auth mds, if this is a delegation point */ 471 __le32 ndist; /* number of mds' this is replicated on */ 472 __le32 dist[]; 473} __attribute__ ((packed)); 474 475#define CEPH_LOCK_FCNTL 1 476#define CEPH_LOCK_FLOCK 2 477 478#define CEPH_LOCK_SHARED 1 479#define CEPH_LOCK_EXCL 2 480#define CEPH_LOCK_UNLOCK 4 481 482struct ceph_filelock { 483 __le64 start;/* file offset to start lock at */ 484 __le64 length; /* num bytes to lock; 0 for all following start */ 485 __le64 client; /* which client holds the lock */ 486 __le64 pid; /* process id holding the lock on the client */ 487 __le64 pid_namespace; 488 __u8 type; /* shared lock, exclusive lock, or unlock */ 489} __attribute__ ((packed)); 490 491 492/* file access modes */ 493#define CEPH_FILE_MODE_PIN 0 494#define CEPH_FILE_MODE_RD 1 495#define CEPH_FILE_MODE_WR 2 496#define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 497#define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 498#define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ 499 500int ceph_flags_to_mode(int flags); 501 502 503/* capability bits */ 504#define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 505 506/* generic cap bits */ 507#define CEPH_CAP_GSHARED 1 /* client can reads */ 508#define CEPH_CAP_GEXCL 2 /* client can read and update */ 509#define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 510#define CEPH_CAP_GRD 8 /* (file) client can read */ 511#define CEPH_CAP_GWR 16 /* (file) client can write */ 512#define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 513#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 514#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 515 516/* per-lock shift */ 517#define CEPH_CAP_SAUTH 2 518#define CEPH_CAP_SLINK 4 519#define CEPH_CAP_SXATTR 6 520#define CEPH_CAP_SFILE 8 521#define CEPH_CAP_SFLOCK 20 522 523#define CEPH_CAP_BITS 22 524 525/* composed values */ 526#define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 527#define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 528#define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 529#define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 530#define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 531#define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 532#define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 533#define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 534#define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 535#define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 536#define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 537#define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 538#define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 539#define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 540#define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 541#define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 542#define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 543 544 545/* cap masks (for getattr) */ 546#define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 547#define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 548#define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 549#define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 550#define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 551#define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 552#define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 553#define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 554#define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 555#define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 556#define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED 557#define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 558#define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 559 CEPH_CAP_AUTH_SHARED | \ 560 CEPH_CAP_LINK_SHARED | \ 561 CEPH_CAP_FILE_SHARED | \ 562 CEPH_CAP_XATTR_SHARED) 563 564#define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 565 CEPH_CAP_LINK_SHARED | \ 566 CEPH_CAP_XATTR_SHARED | \ 567 CEPH_CAP_FILE_SHARED) 568#define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 569 CEPH_CAP_FILE_CACHE) 570 571#define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 572 CEPH_CAP_LINK_EXCL | \ 573 CEPH_CAP_XATTR_EXCL | \ 574 CEPH_CAP_FILE_EXCL) 575#define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 576 CEPH_CAP_FILE_EXCL) 577#define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 578#define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 579 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 580 CEPH_CAP_PIN) 581 582#define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 583 CEPH_LOCK_IXATTR) 584 585int ceph_caps_for_mode(int mode); 586 587enum { 588 CEPH_CAP_OP_GRANT, /* mds->client grant */ 589 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 590 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 591 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 592 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 593 CEPH_CAP_OP_UPDATE, /* client->mds update */ 594 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 595 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 596 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 597 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 598 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 599 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 600 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 601}; 602 603extern const char *ceph_cap_op_name(int op); 604 605/* 606 * caps message, used for capability callbacks, acks, requests, etc. 607 */ 608struct ceph_mds_caps { 609 __le32 op; /* CEPH_CAP_OP_* */ 610 __le64 ino, realm; 611 __le64 cap_id; 612 __le32 seq, issue_seq; 613 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 614 __le32 migrate_seq; 615 __le64 snap_follows; 616 __le32 snap_trace_len; 617 618 /* authlock */ 619 __le32 uid, gid, mode; 620 621 /* linklock */ 622 __le32 nlink; 623 624 /* xattrlock */ 625 __le32 xattr_len; 626 __le64 xattr_version; 627 628 /* filelock */ 629 __le64 size, max_size, truncate_size; 630 __le32 truncate_seq; 631 struct ceph_timespec mtime, atime, ctime; 632 struct ceph_file_layout layout; 633 __le32 time_warp_seq; 634} __attribute__ ((packed)); 635 636/* cap release msg head */ 637struct ceph_mds_cap_release { 638 __le32 num; /* number of cap_items that follow */ 639} __attribute__ ((packed)); 640 641struct ceph_mds_cap_item { 642 __le64 ino; 643 __le64 cap_id; 644 __le32 migrate_seq, seq; 645} __attribute__ ((packed)); 646 647#define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 648#define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 649#define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 650#define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 651 652extern const char *ceph_lease_op_name(int o); 653 654/* lease msg header */ 655struct ceph_mds_lease { 656 __u8 action; /* CEPH_MDS_LEASE_* */ 657 __le16 mask; /* which lease */ 658 __le64 ino; 659 __le64 first, last; /* snap range */ 660 __le32 seq; 661 __le32 duration_ms; /* duration of renewal */ 662} __attribute__ ((packed)); 663/* followed by a __le32+string for dname */ 664 665/* client reconnect */ 666struct ceph_mds_cap_reconnect { 667 __le64 cap_id; 668 __le32 wanted; 669 __le32 issued; 670 __le64 snaprealm; 671 __le64 pathbase; /* base ino for our path to this ino */ 672 __le32 flock_len; /* size of flock state blob, if any */ 673} __attribute__ ((packed)); 674/* followed by flock blob */ 675 676struct ceph_mds_cap_reconnect_v1 { 677 __le64 cap_id; 678 __le32 wanted; 679 __le32 issued; 680 __le64 size; 681 struct ceph_timespec mtime, atime; 682 __le64 snaprealm; 683 __le64 pathbase; /* base ino for our path to this ino */ 684} __attribute__ ((packed)); 685 686struct ceph_mds_snaprealm_reconnect { 687 __le64 ino; /* snap realm base */ 688 __le64 seq; /* snap seq for this snap realm */ 689 __le64 parent; /* parent realm */ 690} __attribute__ ((packed)); 691 692/* 693 * snaps 694 */ 695enum { 696 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 697 CEPH_SNAP_OP_CREATE, 698 CEPH_SNAP_OP_DESTROY, 699 CEPH_SNAP_OP_SPLIT, 700}; 701 702extern const char *ceph_snap_op_name(int o); 703 704/* snap msg header */ 705struct ceph_mds_snap_head { 706 __le32 op; /* CEPH_SNAP_OP_* */ 707 __le64 split; /* ino to split off, if any */ 708 __le32 num_split_inos; /* # inos belonging to new child realm */ 709 __le32 num_split_realms; /* # child realms udner new child realm */ 710 __le32 trace_len; /* size of snap trace blob */ 711} __attribute__ ((packed)); 712/* followed by split ino list, then split realms, then the trace blob */ 713 714/* 715 * encode info about a snaprealm, as viewed by a client 716 */ 717struct ceph_mds_snap_realm { 718 __le64 ino; /* ino */ 719 __le64 created; /* snap: when created */ 720 __le64 parent; /* ino: parent realm */ 721 __le64 parent_since; /* snap: same parent since */ 722 __le64 seq; /* snap: version */ 723 __le32 num_snaps; 724 __le32 num_prior_parent_snaps; 725} __attribute__ ((packed)); 726/* followed by my snap list, then prior parent snap list */ 727 728#endif 729