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 */ 39struct 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 66static 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 */ 73static 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 81int ceph_file_layout_is_valid(const struct ceph_file_layout *layout); 82 83struct 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 */ 155enum { 156 WATCH_NOTIFY = 1, /* notifying watcher */ 157 WATCH_NOTIFY_COMPLETE = 2, /* notifier notified when done */ 158}; 159 160 161struct ceph_mon_request_header { 162 __le64 have_version; 163 __le16 session_mon; 164 __le64 session_mon_tid; 165} __attribute__ ((packed)); 166 167struct ceph_mon_statfs { 168 struct ceph_mon_request_header monhdr; 169 struct ceph_fsid fsid; 170} __attribute__ ((packed)); 171 172struct ceph_statfs { 173 __le64 kb, kb_used, kb_avail; 174 __le64 num_objects; 175} __attribute__ ((packed)); 176 177struct ceph_mon_statfs_reply { 178 struct ceph_fsid fsid; 179 __le64 version; 180 struct ceph_statfs st; 181} __attribute__ ((packed)); 182 183struct ceph_osd_getmap { 184 struct ceph_mon_request_header monhdr; 185 struct ceph_fsid fsid; 186 __le32 start; 187} __attribute__ ((packed)); 188 189struct ceph_mds_getmap { 190 struct ceph_mon_request_header monhdr; 191 struct ceph_fsid fsid; 192} __attribute__ ((packed)); 193 194struct 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 200struct ceph_mon_subscribe_item { 201 __le64 have_version; __le64 have; 202 __u8 onetime; 203} __attribute__ ((packed)); 204 205struct 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 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#define CEPH_LOCK_IPOLICY 16384 /* policy lock on dirs. MDS internal */ 261 262/* client_session ops */ 263enum { 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 277extern const char *ceph_session_op_name(int op); 278 279struct 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 294enum { 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 329extern 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 347union 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 unused; /* used to be preferred osd */ 380 } __attribute__ ((packed)) open; 381 struct { 382 __le32 flags; 383 } __attribute__ ((packed)) setxattr; 384 struct { 385 struct ceph_file_layout layout; 386 } __attribute__ ((packed)) setlayout; 387 struct { 388 __u8 rule; /* currently fcntl or flock */ 389 __u8 type; /* shared, exclusive, remove*/ 390 __le64 owner; /* owner of the lock */ 391 __le64 pid; /* process id requesting the lock */ 392 __le64 start; /* initial location to lock */ 393 __le64 length; /* num bytes to lock from start */ 394 __u8 wait; /* will caller wait for lock to become available? */ 395 } __attribute__ ((packed)) filelock_change; 396} __attribute__ ((packed)); 397 398#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ 399#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ 400 401struct ceph_mds_request_head { 402 __le64 oldest_client_tid; 403 __le32 mdsmap_epoch; /* on client */ 404 __le32 flags; /* CEPH_MDS_FLAG_* */ 405 __u8 num_retry, num_fwd; /* count retry, fwd attempts */ 406 __le16 num_releases; /* # include cap/lease release records */ 407 __le32 op; /* mds op code */ 408 __le32 caller_uid, caller_gid; 409 __le64 ino; /* use this ino for openc, mkdir, mknod, 410 etc. (if replaying) */ 411 union ceph_mds_request_args args; 412} __attribute__ ((packed)); 413 414/* cap/lease release record */ 415struct ceph_mds_request_release { 416 __le64 ino, cap_id; /* ino and unique cap id */ 417 __le32 caps, wanted; /* new issued, wanted */ 418 __le32 seq, issue_seq, mseq; 419 __le32 dname_seq; /* if releasing a dentry lease, a */ 420 __le32 dname_len; /* string follows. */ 421} __attribute__ ((packed)); 422 423/* client reply */ 424struct ceph_mds_reply_head { 425 __le32 op; 426 __le32 result; 427 __le32 mdsmap_epoch; 428 __u8 safe; /* true if committed to disk */ 429 __u8 is_dentry, is_target; /* true if dentry, target inode records 430 are included with reply */ 431} __attribute__ ((packed)); 432 433/* one for each node split */ 434struct ceph_frag_tree_split { 435 __le32 frag; /* this frag splits... */ 436 __le32 by; /* ...by this many bits */ 437} __attribute__ ((packed)); 438 439struct ceph_frag_tree_head { 440 __le32 nsplits; /* num ceph_frag_tree_split records */ 441 struct ceph_frag_tree_split splits[]; 442} __attribute__ ((packed)); 443 444/* capability issue, for bundling with mds reply */ 445struct ceph_mds_reply_cap { 446 __le32 caps, wanted; /* caps issued, wanted */ 447 __le64 cap_id; 448 __le32 seq, mseq; 449 __le64 realm; /* snap realm */ 450 __u8 flags; /* CEPH_CAP_FLAG_* */ 451} __attribute__ ((packed)); 452 453#define CEPH_CAP_FLAG_AUTH (1 << 0) /* cap is issued by auth mds */ 454#define CEPH_CAP_FLAG_RELEASE (1 << 1) /* release the cap */ 455 456/* inode record, for bundling with mds reply */ 457struct ceph_mds_reply_inode { 458 __le64 ino; 459 __le64 snapid; 460 __le32 rdev; 461 __le64 version; /* inode version */ 462 __le64 xattr_version; /* version for xattr blob */ 463 struct ceph_mds_reply_cap cap; /* caps issued for this inode */ 464 struct ceph_file_layout layout; 465 struct ceph_timespec ctime, mtime, atime; 466 __le32 time_warp_seq; 467 __le64 size, max_size, truncate_size; 468 __le32 truncate_seq; 469 __le32 mode, uid, gid; 470 __le32 nlink; 471 __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ 472 struct ceph_timespec rctime; 473 struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ 474} __attribute__ ((packed)); 475/* followed by frag array, symlink string, dir layout, xattr blob */ 476 477/* reply_lease follows dname, and reply_inode */ 478struct ceph_mds_reply_lease { 479 __le16 mask; /* lease type(s) */ 480 __le32 duration_ms; /* lease duration */ 481 __le32 seq; 482} __attribute__ ((packed)); 483 484struct ceph_mds_reply_dirfrag { 485 __le32 frag; /* fragment */ 486 __le32 auth; /* auth mds, if this is a delegation point */ 487 __le32 ndist; /* number of mds' this is replicated on */ 488 __le32 dist[]; 489} __attribute__ ((packed)); 490 491#define CEPH_LOCK_FCNTL 1 492#define CEPH_LOCK_FLOCK 2 493#define CEPH_LOCK_FCNTL_INTR 3 494#define CEPH_LOCK_FLOCK_INTR 4 495 496 497#define CEPH_LOCK_SHARED 1 498#define CEPH_LOCK_EXCL 2 499#define CEPH_LOCK_UNLOCK 4 500 501struct ceph_filelock { 502 __le64 start;/* file offset to start lock at */ 503 __le64 length; /* num bytes to lock; 0 for all following start */ 504 __le64 client; /* which client holds the lock */ 505 __le64 owner; /* owner the lock */ 506 __le64 pid; /* process id holding the lock on the client */ 507 __u8 type; /* shared lock, exclusive lock, or unlock */ 508} __attribute__ ((packed)); 509 510 511/* file access modes */ 512#define CEPH_FILE_MODE_PIN 0 513#define CEPH_FILE_MODE_RD 1 514#define CEPH_FILE_MODE_WR 2 515#define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ 516#define CEPH_FILE_MODE_LAZY 4 /* lazy io */ 517#define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ 518 519int ceph_flags_to_mode(int flags); 520 521#define CEPH_INLINE_NONE ((__u64)-1) 522 523/* capability bits */ 524#define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ 525 526/* generic cap bits */ 527#define CEPH_CAP_GSHARED 1 /* client can reads */ 528#define CEPH_CAP_GEXCL 2 /* client can read and update */ 529#define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ 530#define CEPH_CAP_GRD 8 /* (file) client can read */ 531#define CEPH_CAP_GWR 16 /* (file) client can write */ 532#define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ 533#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ 534#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ 535 536#define CEPH_CAP_SIMPLE_BITS 2 537#define CEPH_CAP_FILE_BITS 8 538 539/* per-lock shift */ 540#define CEPH_CAP_SAUTH 2 541#define CEPH_CAP_SLINK 4 542#define CEPH_CAP_SXATTR 6 543#define CEPH_CAP_SFILE 8 544#define CEPH_CAP_SFLOCK 20 545 546#define CEPH_CAP_BITS 22 547 548/* composed values */ 549#define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) 550#define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) 551#define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) 552#define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) 553#define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) 554#define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) 555#define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) 556#define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) 557#define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) 558#define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) 559#define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) 560#define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) 561#define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) 562#define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) 563#define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) 564#define CEPH_CAP_FLOCK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFLOCK) 565#define CEPH_CAP_FLOCK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFLOCK) 566 567 568/* cap masks (for getattr) */ 569#define CEPH_STAT_CAP_INODE CEPH_CAP_PIN 570#define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ 571#define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN 572#define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED 573#define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED 574#define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED 575#define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED 576#define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED 577#define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED 578#define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED 579#define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ 580#define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED 581#define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ 582 CEPH_CAP_AUTH_SHARED | \ 583 CEPH_CAP_LINK_SHARED | \ 584 CEPH_CAP_FILE_SHARED | \ 585 CEPH_CAP_XATTR_SHARED) 586#define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \ 587 CEPH_CAP_FILE_RD) 588 589#define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ 590 CEPH_CAP_LINK_SHARED | \ 591 CEPH_CAP_XATTR_SHARED | \ 592 CEPH_CAP_FILE_SHARED) 593#define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ 594 CEPH_CAP_FILE_CACHE) 595 596#define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ 597 CEPH_CAP_LINK_EXCL | \ 598 CEPH_CAP_XATTR_EXCL | \ 599 CEPH_CAP_FILE_EXCL) 600#define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \ 601 CEPH_CAP_FILE_SHARED) 602#define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ 603 CEPH_CAP_FILE_EXCL) 604#define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) 605#define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ 606 CEPH_CAP_ANY_FILE_WR | CEPH_CAP_FILE_LAZYIO | \ 607 CEPH_CAP_PIN) 608 609#define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ 610 CEPH_LOCK_IXATTR) 611 612int ceph_caps_for_mode(int mode); 613 614enum { 615 CEPH_CAP_OP_GRANT, /* mds->client grant */ 616 CEPH_CAP_OP_REVOKE, /* mds->client revoke */ 617 CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ 618 CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ 619 CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ 620 CEPH_CAP_OP_UPDATE, /* client->mds update */ 621 CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ 622 CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ 623 CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ 624 CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ 625 CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ 626 CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ 627 CEPH_CAP_OP_RENEW, /* client->mds renewal request */ 628}; 629 630extern const char *ceph_cap_op_name(int op); 631 632/* 633 * caps message, used for capability callbacks, acks, requests, etc. 634 */ 635struct ceph_mds_caps { 636 __le32 op; /* CEPH_CAP_OP_* */ 637 __le64 ino, realm; 638 __le64 cap_id; 639 __le32 seq, issue_seq; 640 __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ 641 __le32 migrate_seq; 642 __le64 snap_follows; 643 __le32 snap_trace_len; 644 645 /* authlock */ 646 __le32 uid, gid, mode; 647 648 /* linklock */ 649 __le32 nlink; 650 651 /* xattrlock */ 652 __le32 xattr_len; 653 __le64 xattr_version; 654 655 /* filelock */ 656 __le64 size, max_size, truncate_size; 657 __le32 truncate_seq; 658 struct ceph_timespec mtime, atime, ctime; 659 struct ceph_file_layout layout; 660 __le32 time_warp_seq; 661} __attribute__ ((packed)); 662 663struct ceph_mds_cap_peer { 664 __le64 cap_id; 665 __le32 seq; 666 __le32 mseq; 667 __le32 mds; 668 __u8 flags; 669} __attribute__ ((packed)); 670 671/* cap release msg head */ 672struct ceph_mds_cap_release { 673 __le32 num; /* number of cap_items that follow */ 674} __attribute__ ((packed)); 675 676struct ceph_mds_cap_item { 677 __le64 ino; 678 __le64 cap_id; 679 __le32 migrate_seq, seq; 680} __attribute__ ((packed)); 681 682#define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ 683#define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ 684#define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ 685#define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ 686 687extern const char *ceph_lease_op_name(int o); 688 689/* lease msg header */ 690struct ceph_mds_lease { 691 __u8 action; /* CEPH_MDS_LEASE_* */ 692 __le16 mask; /* which lease */ 693 __le64 ino; 694 __le64 first, last; /* snap range */ 695 __le32 seq; 696 __le32 duration_ms; /* duration of renewal */ 697} __attribute__ ((packed)); 698/* followed by a __le32+string for dname */ 699 700/* client reconnect */ 701struct ceph_mds_cap_reconnect { 702 __le64 cap_id; 703 __le32 wanted; 704 __le32 issued; 705 __le64 snaprealm; 706 __le64 pathbase; /* base ino for our path to this ino */ 707 __le32 flock_len; /* size of flock state blob, if any */ 708} __attribute__ ((packed)); 709/* followed by flock blob */ 710 711struct ceph_mds_cap_reconnect_v1 { 712 __le64 cap_id; 713 __le32 wanted; 714 __le32 issued; 715 __le64 size; 716 struct ceph_timespec mtime, atime; 717 __le64 snaprealm; 718 __le64 pathbase; /* base ino for our path to this ino */ 719} __attribute__ ((packed)); 720 721struct ceph_mds_snaprealm_reconnect { 722 __le64 ino; /* snap realm base */ 723 __le64 seq; /* snap seq for this snap realm */ 724 __le64 parent; /* parent realm */ 725} __attribute__ ((packed)); 726 727/* 728 * snaps 729 */ 730enum { 731 CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ 732 CEPH_SNAP_OP_CREATE, 733 CEPH_SNAP_OP_DESTROY, 734 CEPH_SNAP_OP_SPLIT, 735}; 736 737extern const char *ceph_snap_op_name(int o); 738 739/* snap msg header */ 740struct ceph_mds_snap_head { 741 __le32 op; /* CEPH_SNAP_OP_* */ 742 __le64 split; /* ino to split off, if any */ 743 __le32 num_split_inos; /* # inos belonging to new child realm */ 744 __le32 num_split_realms; /* # child realms udner new child realm */ 745 __le32 trace_len; /* size of snap trace blob */ 746} __attribute__ ((packed)); 747/* followed by split ino list, then split realms, then the trace blob */ 748 749/* 750 * encode info about a snaprealm, as viewed by a client 751 */ 752struct ceph_mds_snap_realm { 753 __le64 ino; /* ino */ 754 __le64 created; /* snap: when created */ 755 __le64 parent; /* ino: parent realm */ 756 __le64 parent_since; /* snap: same parent since */ 757 __le64 seq; /* snap: version */ 758 __le32 num_snaps; 759 __le32 num_prior_parent_snaps; 760} __attribute__ ((packed)); 761/* followed by my snap list, then prior parent snap list */ 762 763#endif 764