projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 0dee3c28 SW |
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 _FS_CEPH_CEPH_FS_H | |
| 13 | #define _FS_CEPH_CEPH_FS_H | |
| 14 | ||
| 15 | #include "msgr.h" | |
| 16 | #include "rados.h" | |
| 17 | ||
| 18 | /* | |
| 19 | * Ceph release version | |
| 20 | */ | |
| 21 | #define CEPH_VERSION_MAJOR 0 | |
| 22 | #define CEPH_VERSION_MINOR 16 | |
| 23 | #define CEPH_VERSION_PATCH 1 | |
| 24 | ||
| 25 | #define _CEPH_STRINGIFY(x) #x | |
| 26 | #define CEPH_STRINGIFY(x) _CEPH_STRINGIFY(x) | |
| 27 | #define CEPH_MAKE_VERSION(x, y, z) CEPH_STRINGIFY(x) "." CEPH_STRINGIFY(y) \ | |
| 28 | "." CEPH_STRINGIFY(z) | |
| 29 | #define CEPH_VERSION CEPH_MAKE_VERSION(CEPH_VERSION_MAJOR, \ | |
| 30 | CEPH_VERSION_MINOR, CEPH_VERSION_PATCH) | |
| 31 | ||
| 32 | /* | |
| 33 | * subprotocol versions. when specific messages types or high-level | |
| 34 | * protocols change, bump the affected components. we keep rev | |
| 35 | * internal cluster protocols separately from the public, | |
| 36 | * client-facing protocol. | |
| 37 | */ | |
| 38 | #define CEPH_OSD_PROTOCOL 7 /* cluster internal */ | |
| 39 | #define CEPH_MDS_PROTOCOL 9 /* cluster internal */ | |
| 40 | #define CEPH_MON_PROTOCOL 4 /* cluster internal */ | |
| 41 | #define CEPH_OSDC_PROTOCOL 20 /* server/client */ | |
| 42 | #define CEPH_MDSC_PROTOCOL 29 /* server/client */ | |
| 43 | #define CEPH_MONC_PROTOCOL 14 /* server/client */ | |
| 44 | ||
| 45 | ||
| 46 | #define CEPH_INO_ROOT 1 | |
| 47 | ||
| 48 | /* arbitrary limit on max # of monitors (cluster of 3 is typical) */ | |
| 49 | #define CEPH_MAX_MON 31 | |
| 50 | ||
| 51 | ||
| 52 | unsigned int ceph_full_name_hash(const char *name, unsigned int len); | |
| 53 | ||
| 54 | ||
| 55 | /* | |
| 56 | * ceph_file_layout - describe data layout for a file/inode | |
| 57 | */ | |
| 58 | struct ceph_file_layout { | |
| 59 | /* file -> object mapping */ | |
| 60 | __le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple | |
| 61 | of page size. */ | |
| 62 | __le32 fl_stripe_count; /* over this many objects */ | |
| 63 | __le32 fl_object_size; /* until objects are this big, then move to | |
| 64 | new objects */ | |
| 65 | __le32 fl_cas_hash; /* 0 = none; 1 = sha256 */ | |
| 66 | ||
| 67 | /* pg -> disk layout */ | |
| 68 | __le32 fl_object_stripe_unit; /* for per-object parity, if any */ | |
| 69 | ||
| 70 | /* object -> pg layout */ | |
| 71 | __le32 fl_pg_preferred; /* preferred primary for pg (-1 for none) */ | |
| 72 | __le32 fl_pg_pool; /* namespace, crush ruleset, rep level */ | |
| 73 | } __attribute__ ((packed)); | |
| 74 | ||
| 75 | ||
| 76 | ||
| 77 | ||
| 78 | /********************************************* | |
| 79 | * message layer | |
| 80 | */ | |
| 81 | ||
| 82 | /* | |
| 83 | * message types | |
| 84 | */ | |
| 85 | ||
| 86 | /* misc */ | |
| 87 | #define CEPH_MSG_SHUTDOWN 1 | |
| 88 | #define CEPH_MSG_PING 2 | |
| 89 | ||
| 90 | /* client <-> monitor */ | |
| 91 | #define CEPH_MSG_MON_MAP 4 | |
| 92 | #define CEPH_MSG_MON_GET_MAP 5 | |
| 93 | #define CEPH_MSG_CLIENT_MOUNT 10 | |
| 94 | #define CEPH_MSG_CLIENT_MOUNT_ACK 11 | |
| 95 | #define CEPH_MSG_STATFS 13 | |
| 96 | #define CEPH_MSG_STATFS_REPLY 14 | |
| 97 | #define CEPH_MSG_MON_SUBSCRIBE 15 | |
| 98 | #define CEPH_MSG_MON_SUBSCRIBE_ACK 16 | |
| 99 | ||
| 100 | /* client <-> mds */ | |
| 101 | #define CEPH_MSG_MDS_GETMAP 20 | |
| 102 | #define CEPH_MSG_MDS_MAP 21 | |
| 103 | ||
| 104 | #define CEPH_MSG_CLIENT_SESSION 22 | |
| 105 | #define CEPH_MSG_CLIENT_RECONNECT 23 | |
| 106 | ||
| 107 | #define CEPH_MSG_CLIENT_REQUEST 24 | |
| 108 | #define CEPH_MSG_CLIENT_REQUEST_FORWARD 25 | |
| 109 | #define CEPH_MSG_CLIENT_REPLY 26 | |
| 110 | #define CEPH_MSG_CLIENT_CAPS 0x310 | |
| 111 | #define CEPH_MSG_CLIENT_LEASE 0x311 | |
| 112 | #define CEPH_MSG_CLIENT_SNAP 0x312 | |
| 113 | #define CEPH_MSG_CLIENT_CAPRELEASE 0x313 | |
| 114 | ||
| 115 | /* osd */ | |
| 116 | #define CEPH_MSG_OSD_GETMAP 40 | |
| 117 | #define CEPH_MSG_OSD_MAP 41 | |
| 118 | #define CEPH_MSG_OSD_OP 42 | |
| 119 | #define CEPH_MSG_OSD_OPREPLY 43 | |
| 120 | ||
| 121 | ||
| 122 | struct ceph_mon_statfs { | |
| 123 | __le64 have_version; | |
| 124 | struct ceph_fsid fsid; | |
| 125 | __le64 tid; | |
| 126 | } __attribute__ ((packed)); | |
| 127 | ||
| 128 | struct ceph_statfs { | |
| 129 | __le64 kb, kb_used, kb_avail; | |
| 130 | __le64 num_objects; | |
| 131 | } __attribute__ ((packed)); | |
| 132 | ||
| 133 | struct ceph_mon_statfs_reply { | |
| 134 | struct ceph_fsid fsid; | |
| 135 | __le64 tid; | |
| 136 | __le64 version; | |
| 137 | struct ceph_statfs st; | |
| 138 | } __attribute__ ((packed)); | |
| 139 | ||
| 140 | struct ceph_osd_getmap { | |
| 141 | __le64 have_version; | |
| 142 | struct ceph_fsid fsid; | |
| 143 | __le32 start; | |
| 144 | } __attribute__ ((packed)); | |
| 145 | ||
| 146 | struct ceph_mds_getmap { | |
| 147 | __le64 have_version; | |
| 148 | struct ceph_fsid fsid; | |
| 149 | } __attribute__ ((packed)); | |
| 150 | ||
| 151 | struct ceph_client_mount { | |
| 152 | __le64 have_version; | |
| 153 | } __attribute__ ((packed)); | |
| 154 | ||
| 155 | struct ceph_mon_subscribe_item { | |
| 156 | __le64 have; | |
| 157 | __u8 onetime; | |
| 158 | } __attribute__ ((packed)); | |
| 159 | ||
| 160 | /* | |
| 161 | * mds states | |
| 162 | * > 0 -> in | |
| 163 | * <= 0 -> out | |
| 164 | */ | |
| 165 | #define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */ | |
| 166 | #define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees. | |
| 167 | empty log. */ | |
| 168 | #define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */ | |
| 169 | #define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */ | |
| 170 | #define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */ | |
| 171 | #define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */ | |
| 172 | #define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */ | |
| 173 | ||
| 174 | #define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */ | |
| 175 | #define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed | |
| 176 | operations (import, rename, etc.) */ | |
| 177 | #define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */ | |
| 178 | #define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */ | |
| 179 | #define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */ | |
| 180 | #define CEPH_MDS_STATE_ACTIVE 13 /* up, active */ | |
| 181 | #define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */ | |
| 182 | ||
| 183 | extern const char *ceph_mds_state_name(int s); | |
| 184 | ||
| 185 | ||
| 186 | /* | |
| 187 | * metadata lock types. | |
| 188 | * - these are bitmasks.. we can compose them | |
| 189 | * - they also define the lock ordering by the MDS | |
| 190 | * - a few of these are internal to the mds | |
| 191 | */ | |
| 192 | #define CEPH_LOCK_DN 1 | |
| 193 | #define CEPH_LOCK_ISNAP 2 | |
| 194 | #define CEPH_LOCK_IVERSION 4 /* mds internal */ | |
| 195 | #define CEPH_LOCK_IFILE 8 /* mds internal */ | |
| 196 | #define CEPH_LOCK_IAUTH 32 | |
| 197 | #define CEPH_LOCK_ILINK 64 | |
| 198 | #define CEPH_LOCK_IDFT 128 /* dir frag tree */ | |
| 199 | #define CEPH_LOCK_INEST 256 /* mds internal */ | |
| 200 | #define CEPH_LOCK_IXATTR 512 | |
| 201 | #define CEPH_LOCK_INO 2048 /* immutable inode bits; not a lock */ | |
| 202 | ||
| 203 | /* client_session ops */ | |
| 204 | enum { | |
| 205 | CEPH_SESSION_REQUEST_OPEN, | |
| 206 | CEPH_SESSION_OPEN, | |
| 207 | CEPH_SESSION_REQUEST_CLOSE, | |
| 208 | CEPH_SESSION_CLOSE, | |
| 209 | CEPH_SESSION_REQUEST_RENEWCAPS, | |
| 210 | CEPH_SESSION_RENEWCAPS, | |
| 211 | CEPH_SESSION_STALE, | |
| 212 | CEPH_SESSION_RECALL_STATE, | |
| 213 | }; | |
| 214 | ||
| 215 | extern const char *ceph_session_op_name(int op); | |
| 216 | ||
| 217 | struct ceph_mds_session_head { | |
| 218 | __le32 op; | |
| 219 | __le64 seq; | |
| 220 | struct ceph_timespec stamp; | |
| 221 | __le32 max_caps, max_leases; | |
| 222 | } __attribute__ ((packed)); | |
| 223 | ||
| 224 | /* client_request */ | |
| 225 | /* | |
| 226 | * metadata ops. | |
| 227 | * & 0x001000 -> write op | |
| 228 | * & 0x010000 -> follow symlink (e.g. stat(), not lstat()). | |
| 229 | & & 0x100000 -> use weird ino/path trace | |
| 230 | */ | |
| 231 | #define CEPH_MDS_OP_WRITE 0x001000 | |
| 232 | enum { | |
| 233 | CEPH_MDS_OP_LOOKUP = 0x00100, | |
| 234 | CEPH_MDS_OP_GETATTR = 0x00101, | |
| 235 | CEPH_MDS_OP_LOOKUPHASH = 0x00102, | |
| 236 | CEPH_MDS_OP_LOOKUPPARENT = 0x00103, | |
| 237 | ||
| 238 | CEPH_MDS_OP_SETXATTR = 0x01105, | |
| 239 | CEPH_MDS_OP_RMXATTR = 0x01106, | |
| 240 | CEPH_MDS_OP_SETLAYOUT = 0x01107, | |
| 241 | CEPH_MDS_OP_SETATTR = 0x01108, | |
| 242 | ||
| 243 | CEPH_MDS_OP_MKNOD = 0x01201, | |
| 244 | CEPH_MDS_OP_LINK = 0x01202, | |
| 245 | CEPH_MDS_OP_UNLINK = 0x01203, | |
| 246 | CEPH_MDS_OP_RENAME = 0x01204, | |
| 247 | CEPH_MDS_OP_MKDIR = 0x01220, | |
| 248 | CEPH_MDS_OP_RMDIR = 0x01221, | |
| 249 | CEPH_MDS_OP_SYMLINK = 0x01222, | |
| 250 | ||
| 251 | CEPH_MDS_OP_CREATE = 0x00301, | |
| 252 | CEPH_MDS_OP_OPEN = 0x00302, | |
| 253 | CEPH_MDS_OP_READDIR = 0x00305, | |
| 254 | ||
| 255 | CEPH_MDS_OP_LOOKUPSNAP = 0x00400, | |
| 256 | CEPH_MDS_OP_MKSNAP = 0x01400, | |
| 257 | CEPH_MDS_OP_RMSNAP = 0x01401, | |
| 258 | CEPH_MDS_OP_LSSNAP = 0x00402, | |
| 259 | }; | |
| 260 | ||
| 261 | extern const char *ceph_mds_op_name(int op); | |
| 262 | ||
| 263 | ||
| 264 | #define CEPH_SETATTR_MODE 1 | |
| 265 | #define CEPH_SETATTR_UID 2 | |
| 266 | #define CEPH_SETATTR_GID 4 | |
| 267 | #define CEPH_SETATTR_MTIME 8 | |
| 268 | #define CEPH_SETATTR_ATIME 16 | |
| 269 | #define CEPH_SETATTR_SIZE 32 | |
| 270 | #define CEPH_SETATTR_CTIME 64 | |
| 271 | ||
| 272 | union ceph_mds_request_args { | |
| 273 | struct { | |
| 274 | __le32 mask; /* CEPH_CAP_* */ | |
| 275 | } __attribute__ ((packed)) getattr; | |
| 276 | struct { | |
| 277 | __le32 mode; | |
| 278 | __le32 uid; | |
| 279 | __le32 gid; | |
| 280 | struct ceph_timespec mtime; | |
| 281 | struct ceph_timespec atime; | |
| 282 | __le64 size, old_size; /* old_size needed by truncate */ | |
| 283 | __le32 mask; /* CEPH_SETATTR_* */ | |
| 284 | } __attribute__ ((packed)) setattr; | |
| 285 | struct { | |
| 286 | __le32 frag; /* which dir fragment */ | |
| 287 | __le32 max_entries; /* how many dentries to grab */ | |
| 288 | } __attribute__ ((packed)) readdir; | |
| 289 | struct { | |
| 290 | __le32 mode; | |
| 291 | __le32 rdev; | |
| 292 | } __attribute__ ((packed)) mknod; | |
| 293 | struct { | |
| 294 | __le32 mode; | |
| 295 | } __attribute__ ((packed)) mkdir; | |
| 296 | struct { | |
| 297 | __le32 flags; | |
| 298 | __le32 mode; | |
| 299 | __le32 stripe_unit; /* layout for newly created file */ | |
| 300 | __le32 stripe_count; /* ... */ | |
| 301 | __le32 object_size; | |
| 302 | __le32 file_replication; | |
| 303 | __le32 preferred; | |
| 304 | } __attribute__ ((packed)) open; | |
| 305 | struct { | |
| 306 | __le32 flags; | |
| 307 | } __attribute__ ((packed)) setxattr; | |
| 308 | struct { | |
| 309 | struct ceph_file_layout layout; | |
| 310 | } __attribute__ ((packed)) setlayout; | |
| 311 | } __attribute__ ((packed)); | |
| 312 | ||
| 313 | #define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */ | |
| 314 | #define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */ | |
| 315 | ||
| 316 | struct ceph_mds_request_head { | |
| 317 | __le64 tid, oldest_client_tid; | |
| 318 | __le32 mdsmap_epoch; /* on client */ | |
| 319 | __le32 flags; /* CEPH_MDS_FLAG_* */ | |
| 320 | __u8 num_retry, num_fwd; /* count retry, fwd attempts */ | |
| 321 | __le16 num_releases; /* # include cap/lease release records */ | |
| 322 | __le32 op; /* mds op code */ | |
| 323 | __le32 caller_uid, caller_gid; | |
| 324 | __le64 ino; /* use this ino for openc, mkdir, mknod, | |
| 325 | etc. (if replaying) */ | |
| 326 | union ceph_mds_request_args args; | |
| 327 | } __attribute__ ((packed)); | |
| 328 | ||
| 329 | /* cap/lease release record */ | |
| 330 | struct ceph_mds_request_release { | |
| 331 | __le64 ino, cap_id; /* ino and unique cap id */ | |
| 332 | __le32 caps, wanted; /* new issued, wanted */ | |
| 333 | __le32 seq, issue_seq, mseq; | |
| 334 | __le32 dname_seq; /* if releasing a dentry lease, a */ | |
| 335 | __le32 dname_len; /* string follows. */ | |
| 336 | } __attribute__ ((packed)); | |
| 337 | ||
| 338 | /* client reply */ | |
| 339 | struct ceph_mds_reply_head { | |
| 340 | __le64 tid; | |
| 341 | __le32 op; | |
| 342 | __le32 result; | |
| 343 | __le32 mdsmap_epoch; | |
| 344 | __u8 safe; /* true if committed to disk */ | |
| 345 | __u8 is_dentry, is_target; /* true if dentry, target inode records | |
| 346 | are included with reply */ | |
| 347 | } __attribute__ ((packed)); | |
| 348 | ||
| 349 | /* one for each node split */ | |
| 350 | struct ceph_frag_tree_split { | |
| 351 | __le32 frag; /* this frag splits... */ | |
| 352 | __le32 by; /* ...by this many bits */ | |
| 353 | } __attribute__ ((packed)); | |
| 354 | ||
| 355 | struct ceph_frag_tree_head { | |
| 356 | __le32 nsplits; /* num ceph_frag_tree_split records */ | |
| 357 | struct ceph_frag_tree_split splits[]; | |
| 358 | } __attribute__ ((packed)); | |
| 359 | ||
| 360 | /* capability issue, for bundling with mds reply */ | |
| 361 | struct ceph_mds_reply_cap { | |
| 362 | __le32 caps, wanted; /* caps issued, wanted */ | |
| 363 | __le64 cap_id; | |
| 364 | __le32 seq, mseq; | |
| 365 | __le64 realm; /* snap realm */ | |
| 366 | __u8 flags; /* CEPH_CAP_FLAG_* */ | |
| 367 | } __attribute__ ((packed)); | |
| 368 | ||
| 369 | #define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */ | |
| 370 | ||
| 371 | /* inode record, for bundling with mds reply */ | |
| 372 | struct ceph_mds_reply_inode { | |
| 373 | __le64 ino; | |
| 374 | __le64 snapid; | |
| 375 | __le32 rdev; | |
| 376 | __le64 version; /* inode version */ | |
| 377 | __le64 xattr_version; /* version for xattr blob */ | |
| 378 | struct ceph_mds_reply_cap cap; /* caps issued for this inode */ | |
| 379 | struct ceph_file_layout layout; | |
| 380 | struct ceph_timespec ctime, mtime, atime; | |
| 381 | __le32 time_warp_seq; | |
| 382 | __le64 size, max_size, truncate_size; | |
| 383 | __le32 truncate_seq; | |
| 384 | __le32 mode, uid, gid; | |
| 385 | __le32 nlink; | |
| 386 | __le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */ | |
| 387 | struct ceph_timespec rctime; | |
| 388 | struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */ | |
| 389 | } __attribute__ ((packed)); | |
| 390 | /* followed by frag array, then symlink string, then xattr blob */ | |
| 391 | ||
| 392 | /* reply_lease follows dname, and reply_inode */ | |
| 393 | struct ceph_mds_reply_lease { | |
| 394 | __le16 mask; /* lease type(s) */ | |
| 395 | __le32 duration_ms; /* lease duration */ | |
| 396 | __le32 seq; | |
| 397 | } __attribute__ ((packed)); | |
| 398 | ||
| 399 | struct ceph_mds_reply_dirfrag { | |
| 400 | __le32 frag; /* fragment */ | |
| 401 | __le32 auth; /* auth mds, if this is a delegation point */ | |
| 402 | __le32 ndist; /* number of mds' this is replicated on */ | |
| 403 | __le32 dist[]; | |
| 404 | } __attribute__ ((packed)); | |
| 405 | ||
| 406 | /* file access modes */ | |
| 407 | #define CEPH_FILE_MODE_PIN 0 | |
| 408 | #define CEPH_FILE_MODE_RD 1 | |
| 409 | #define CEPH_FILE_MODE_WR 2 | |
| 410 | #define CEPH_FILE_MODE_RDWR 3 /* RD | WR */ | |
| 411 | #define CEPH_FILE_MODE_LAZY 4 /* lazy io */ | |
| 412 | #define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */ | |
| 413 | ||
| 414 | int ceph_flags_to_mode(int flags); | |
| 415 | ||
| 416 | ||
| 417 | /* capability bits */ | |
| 418 | #define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */ | |
| 419 | ||
| 420 | /* generic cap bits */ | |
| 421 | #define CEPH_CAP_GSHARED 1 /* client can reads */ | |
| 422 | #define CEPH_CAP_GEXCL 2 /* client can read and update */ | |
| 423 | #define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */ | |
| 424 | #define CEPH_CAP_GRD 8 /* (file) client can read */ | |
| 425 | #define CEPH_CAP_GWR 16 /* (file) client can write */ | |
| 426 | #define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */ | |
| 427 | #define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */ | |
| 428 | #define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */ | |
| 429 | ||
| 430 | /* per-lock shift */ | |
| 431 | #define CEPH_CAP_SAUTH 2 | |
| 432 | #define CEPH_CAP_SLINK 4 | |
| 433 | #define CEPH_CAP_SXATTR 6 | |
| 434 | #define CEPH_CAP_SFILE 8 /* goes at the end (uses >2 cap bits) */ | |
| 435 | ||
| 436 | #define CEPH_CAP_BITS 16 | |
| 437 | ||
| 438 | /* composed values */ | |
| 439 | #define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH) | |
| 440 | #define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH) | |
| 441 | #define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK) | |
| 442 | #define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK) | |
| 443 | #define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR) | |
| 444 | #define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR) | |
| 445 | #define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE) | |
| 446 | #define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE) | |
| 447 | #define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE) | |
| 448 | #define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE) | |
| 449 | #define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE) | |
| 450 | #define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE) | |
| 451 | #define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE) | |
| 452 | #define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE) | |
| 453 | #define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE) | |
| 454 | ||
| 455 | /* cap masks (for getattr) */ | |
| 456 | #define CEPH_STAT_CAP_INODE CEPH_CAP_PIN | |
| 457 | #define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */ | |
| 458 | #define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN | |
| 459 | #define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED | |
| 460 | #define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED | |
| 461 | #define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED | |
| 462 | #define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED | |
| 463 | #define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED | |
| 464 | #define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED | |
| 465 | #define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED | |
| 466 | #define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */ | |
| 467 | #define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED | |
| 468 | #define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \ | |
| 469 | CEPH_CAP_AUTH_SHARED | \ | |
| 470 | CEPH_CAP_LINK_SHARED | \ | |
| 471 | CEPH_CAP_FILE_SHARED | \ | |
| 472 | CEPH_CAP_XATTR_SHARED) | |
| 473 | ||
| 474 | #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \ | |
| 475 | CEPH_CAP_LINK_SHARED | \ | |
| 476 | CEPH_CAP_XATTR_SHARED | \ | |
| 477 | CEPH_CAP_FILE_SHARED) | |
| 478 | #define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \ | |
| 479 | CEPH_CAP_FILE_CACHE) | |
| 480 | ||
| 481 | #define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \ | |
| 482 | CEPH_CAP_LINK_EXCL | \ | |
| 483 | CEPH_CAP_XATTR_EXCL | \ | |
| 484 | CEPH_CAP_FILE_EXCL) | |
| 485 | #define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \ | |
| 486 | CEPH_CAP_FILE_EXCL) | |
| 487 | #define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR) | |
| 488 | #define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \ | |
| 489 | CEPH_CAP_ANY_FILE_WR | CEPH_CAP_PIN) | |
| 490 | ||
| 491 | #define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \ | |
| 492 | CEPH_LOCK_IXATTR) | |
| 493 | ||
| 494 | int ceph_caps_for_mode(int mode); | |
| 495 | ||
| 496 | enum { | |
| 497 | CEPH_CAP_OP_GRANT, /* mds->client grant */ | |
| 498 | CEPH_CAP_OP_REVOKE, /* mds->client revoke */ | |
| 499 | CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */ | |
| 500 | CEPH_CAP_OP_EXPORT, /* mds has exported the cap */ | |
| 501 | CEPH_CAP_OP_IMPORT, /* mds has imported the cap */ | |
| 502 | CEPH_CAP_OP_UPDATE, /* client->mds update */ | |
| 503 | CEPH_CAP_OP_DROP, /* client->mds drop cap bits */ | |
| 504 | CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */ | |
| 505 | CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */ | |
| 506 | CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */ | |
| 507 | CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */ | |
| 508 | CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */ | |
| 509 | CEPH_CAP_OP_RENEW, /* client->mds renewal request */ | |
| 510 | }; | |
| 511 | ||
| 512 | extern const char *ceph_cap_op_name(int op); | |
| 513 | ||
| 514 | /* | |
| 515 | * caps message, used for capability callbacks, acks, requests, etc. | |
| 516 | */ | |
| 517 | struct ceph_mds_caps { | |
| 518 | __le32 op; /* CEPH_CAP_OP_* */ | |
| 519 | __le64 ino, realm; | |
| 520 | __le64 cap_id; | |
| 521 | __le32 seq, issue_seq; | |
| 522 | __le32 caps, wanted, dirty; /* latest issued/wanted/dirty */ | |
| 523 | __le32 migrate_seq; | |
| 524 | __le64 snap_follows; | |
| 525 | __le32 snap_trace_len; | |
| 526 | __le64 client_tid; /* for FLUSH(SNAP) -> FLUSH(SNAP)_ACK */ | |
| 527 | ||
| 528 | /* authlock */ | |
| 529 | __le32 uid, gid, mode; | |
| 530 | ||
| 531 | /* linklock */ | |
| 532 | __le32 nlink; | |
| 533 | ||
| 534 | /* xattrlock */ | |
| 535 | __le32 xattr_len; | |
| 536 | __le64 xattr_version; | |
| 537 | ||
| 538 | /* filelock */ | |
| 539 | __le64 size, max_size, truncate_size; | |
| 540 | __le32 truncate_seq; | |
| 541 | struct ceph_timespec mtime, atime, ctime; | |
| 542 | struct ceph_file_layout layout; | |
| 543 | __le32 time_warp_seq; | |
| 544 | } __attribute__ ((packed)); | |
| 545 | ||
| 546 | /* cap release msg head */ | |
| 547 | struct ceph_mds_cap_release { | |
| 548 | __le32 num; /* number of cap_items that follow */ | |
| 549 | } __attribute__ ((packed)); | |
| 550 | ||
| 551 | struct ceph_mds_cap_item { | |
| 552 | __le64 ino; | |
| 553 | __le64 cap_id; | |
| 554 | __le32 migrate_seq, seq; | |
| 555 | } __attribute__ ((packed)); | |
| 556 | ||
| 557 | #define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */ | |
| 558 | #define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */ | |
| 559 | #define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */ | |
| 560 | #define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */ | |
| 561 | ||
| 562 | extern const char *ceph_lease_op_name(int o); | |
| 563 | ||
| 564 | /* lease msg header */ | |
| 565 | struct ceph_mds_lease { | |
| 566 | __u8 action; /* CEPH_MDS_LEASE_* */ | |
| 567 | __le16 mask; /* which lease */ | |
| 568 | __le64 ino; | |
| 569 | __le64 first, last; /* snap range */ | |
| 570 | __le32 seq; | |
| 571 | __le32 duration_ms; /* duration of renewal */ | |
| 572 | } __attribute__ ((packed)); | |
| 573 | /* followed by a __le32+string for dname */ | |
| 574 | ||
| 575 | /* client reconnect */ | |
| 576 | struct ceph_mds_cap_reconnect { | |
| 577 | __le64 cap_id; | |
| 578 | __le32 wanted; | |
| 579 | __le32 issued; | |
| 580 | __le64 size; | |
| 581 | struct ceph_timespec mtime, atime; | |
| 582 | __le64 snaprealm; | |
| 583 | __le64 pathbase; /* base ino for our path to this ino */ | |
| 584 | } __attribute__ ((packed)); | |
| 585 | /* followed by encoded string */ | |
| 586 | ||
| 587 | struct ceph_mds_snaprealm_reconnect { | |
| 588 | __le64 ino; /* snap realm base */ | |
| 589 | __le64 seq; /* snap seq for this snap realm */ | |
| 590 | __le64 parent; /* parent realm */ | |
| 591 | } __attribute__ ((packed)); | |
| 592 | ||
| 593 | /* | |
| 594 | * snaps | |
| 595 | */ | |
| 596 | enum { | |
| 597 | CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */ | |
| 598 | CEPH_SNAP_OP_CREATE, | |
| 599 | CEPH_SNAP_OP_DESTROY, | |
| 600 | CEPH_SNAP_OP_SPLIT, | |
| 601 | }; | |
| 602 | ||
| 603 | extern const char *ceph_snap_op_name(int o); | |
| 604 | ||
| 605 | /* snap msg header */ | |
| 606 | struct ceph_mds_snap_head { | |
| 607 | __le32 op; /* CEPH_SNAP_OP_* */ | |
| 608 | __le64 split; /* ino to split off, if any */ | |
| 609 | __le32 num_split_inos; /* # inos belonging to new child realm */ | |
| 610 | __le32 num_split_realms; /* # child realms udner new child realm */ | |
| 611 | __le32 trace_len; /* size of snap trace blob */ | |
| 612 | } __attribute__ ((packed)); | |
| 613 | /* followed by split ino list, then split realms, then the trace blob */ | |
| 614 | ||
| 615 | /* | |
| 616 | * encode info about a snaprealm, as viewed by a client | |
| 617 | */ | |
| 618 | struct ceph_mds_snap_realm { | |
| 619 | __le64 ino; /* ino */ | |
| 620 | __le64 created; /* snap: when created */ | |
| 621 | __le64 parent; /* ino: parent realm */ | |
| 622 | __le64 parent_since; /* snap: same parent since */ | |
| 623 | __le64 seq; /* snap: version */ | |
| 624 | __le32 num_snaps; | |
| 625 | __le32 num_prior_parent_snaps; | |
| 626 | } __attribute__ ((packed)); | |
| 627 | /* followed by my snap list, then prior parent snap list */ | |
| 628 | ||
| 629 | #endif |