1 /* 2 * Copyright (c) 1989, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)mount.h 8.21 (Berkeley) 5/20/95 34 * $FreeBSD: src/sys/sys/mount.h,v 1.89.2.7 2003/04/04 20:35:57 tegge Exp $ 35 * $DragonFly: src/sys/sys/mount.h,v 1.36 2007/11/20 21:37:53 dillon Exp $ 36 */ 37 38 #ifndef _SYS_MOUNT_H_ 39 #define _SYS_MOUNT_H_ 40 41 #include <sys/ucred.h> 42 43 #ifndef _KERNEL 44 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 45 #include <sys/stat.h> 46 #endif /* !_POSIX_C_SOURCE */ 47 #endif /* !_KERNEL */ 48 49 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 50 #ifndef _SYS_QUEUE_H_ 51 #include <sys/queue.h> 52 #endif 53 #ifndef _SYS_LOCK_H_ 54 #include <sys/lock.h> 55 #endif 56 #ifndef _SYS_NAMECACHE_H_ 57 #include <sys/namecache.h> 58 #endif 59 #endif 60 61 struct thread; 62 struct journal; 63 struct vop_ops; 64 struct vop_mountctl_args; 65 66 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 67 68 /* 69 * File identifier. 70 * These are unique per filesystem on a single machine. 71 */ 72 #define MAXFIDSZ 16 73 74 struct fid { 75 u_short fid_len; /* length of data in bytes */ 76 u_short fid_reserved; /* force longword alignment */ 77 char fid_data[MAXFIDSZ]; /* data (variable length) */ 78 }; 79 80 /* 81 * file system statistics 82 */ 83 84 #define MFSNAMELEN 16 /* length of fs type name, including null */ 85 #define MNAMELEN 80 /* length of buffer for returned name */ 86 87 struct statfs { 88 long f_spare2; /* placeholder */ 89 long f_bsize; /* fundamental file system block size */ 90 long f_iosize; /* optimal transfer block size */ 91 long f_blocks; /* total data blocks in file system */ 92 long f_bfree; /* free blocks in fs */ 93 long f_bavail; /* free blocks avail to non-superuser */ 94 long f_files; /* total file nodes in file system */ 95 long f_ffree; /* free file nodes in fs */ 96 fsid_t f_fsid; /* file system id */ 97 uid_t f_owner; /* user that mounted the filesystem */ 98 int f_type; /* type of filesystem */ 99 int f_flags; /* copy of mount exported flags */ 100 long f_syncwrites; /* count of sync writes since mount */ 101 long f_asyncwrites; /* count of async writes since mount */ 102 char f_fstypename[MFSNAMELEN]; /* fs type name */ 103 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 104 long f_syncreads; /* count of sync reads since mount */ 105 long f_asyncreads; /* count of async reads since mount */ 106 short f_spares1; /* unused spare */ 107 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 108 short f_spares2; /* unused spare */ 109 long f_spare[2]; /* unused spare */ 110 }; 111 112 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 113 114 /* 115 * bio_ops are associated with the mount structure and used in conjuction 116 * with the b_dep field in a buffer. Currently softupdates and HAMMER 117 * utilize this field. 118 */ 119 struct buf; 120 121 struct bio_ops { 122 TAILQ_ENTRY(bio_ops) entry; 123 void (*io_start) (struct buf *); 124 void (*io_complete) (struct buf *); 125 void (*io_deallocate) (struct buf *); 126 int (*io_fsync) (struct vnode *); 127 int (*io_sync) (struct mount *); 128 void (*io_movedeps) (struct buf *, struct buf *); 129 int (*io_countdeps) (struct buf *, int); 130 int (*io_checkread) (struct buf *); 131 int (*io_checkwrite) (struct buf *); 132 }; 133 134 /* 135 * Structure per mounted file system. Each mounted file system has an 136 * array of operations and an instance record. The file systems are 137 * put on a doubly linked list. 138 * 139 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 140 * are linked into mnt_nvnodelist. At some point in the near future the 141 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 142 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 143 * list. Filesystem kld's syncing code should remain compatible since 144 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 145 * 146 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that 147 * only take namecache pointers will not be able to find their operations 148 * vector via namecache->nc_mount. 149 */ 150 TAILQ_HEAD(vnodelst, vnode); 151 TAILQ_HEAD(journallst, journal); 152 153 struct mount { 154 TAILQ_ENTRY(mount) mnt_list; /* mount list */ 155 struct vfsops *mnt_op; /* operations on fs */ 156 struct vfsconf *mnt_vfc; /* configuration info */ 157 void *mnt_unused01; 158 struct vnode *mnt_syncer; /* syncer vnode */ 159 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */ 160 struct lock mnt_lock; /* mount structure lock */ 161 int mnt_flag; /* flags shared with user */ 162 int mnt_kern_flag; /* kernel only flags */ 163 int mnt_maxsymlinklen; /* max size of short symlink */ 164 struct statfs mnt_stat; /* cache of filesystem stats */ 165 qaddr_t mnt_data; /* private data */ 166 time_t mnt_time; /* last time written*/ 167 u_int mnt_iosize_max; /* max IO request size */ 168 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */ 169 int mnt_nvnodelistsize; /* # of vnodes on this mount */ 170 171 /* 172 * ops vectors have a fixed stacking order. All primary calls run 173 * through mnt_vn_ops. This field is typically assigned to 174 * mnt_vn_norm_ops. If journaling has been enabled this field is 175 * usually assigned to mnt_vn_journal_ops. 176 */ 177 struct vop_ops *mnt_vn_use_ops; /* current ops set */ 178 179 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */ 180 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */ 181 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */ 182 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */ 183 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */ 184 struct nchandle mnt_ncmountpt; /* mount point */ 185 struct nchandle mnt_ncmounton; /* mounted on */ 186 int mnt_refs; /* nchandle references */ 187 188 struct journallst mnt_jlist; /* list of active journals */ 189 u_int8_t *mnt_jbitmap; /* streamid bitmap */ 190 int16_t mnt_streamid; /* last streamid */ 191 192 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */ 193 }; 194 195 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 196 197 /* 198 * User specifiable flags. 199 */ 200 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 201 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 202 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 203 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 204 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 205 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 206 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 207 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 208 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 209 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 210 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 211 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 212 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 213 214 /* 215 * NFS export related mount flags. 216 */ 217 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 218 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 219 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 220 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 221 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 222 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 223 224 /* 225 * Flags set by internal operations, 226 * but visible to the user. 227 * XXX some of these are not quite right.. (I've never seen the root flag set) 228 */ 229 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 230 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 231 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 232 #define MNT_USER 0x00008000 /* mounted by a user */ 233 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 234 235 /* 236 * Mask of flags that are visible to statfs() 237 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 238 * but the 'mount' program may need changing to handle this. 239 */ 240 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 241 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 242 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 243 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 244 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 245 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 246 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 247 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 248 /* 249 * External filesystem command modifier flags. 250 * Unmount can use the MNT_FORCE flag. 251 * XXX These are not STATES and really should be somewhere else. 252 */ 253 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 254 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 255 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 256 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 257 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 258 /* 259 * Internal filesystem control flags stored in mnt_kern_flag. 260 * 261 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 262 * past the mount point. This keeps the subtree stable during mounts 263 * and unmounts. 264 * 265 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 266 * dounmount() is still waiting to lock the mountpoint. This allows 267 * the filesystem to cancel operations that might otherwise deadlock 268 * with the unmount attempt (used by NFS). 269 * 270 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one. 271 */ 272 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 273 #define MNTK_NCALIASED 0x00800000 /* namecached aliased */ 274 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 275 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 276 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 277 #define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */ 278 #define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */ 279 280 /* 281 * mountlist_*() defines 282 */ 283 #define MNTSCAN_FORWARD 0x0001 284 #define MNTSCAN_REVERSE 0x0002 285 #define MNTSCAN_NOBUSY 0x0004 286 287 #define MNTINS_FIRST 0x0001 288 #define MNTINS_LAST 0x0002 289 290 /* 291 * Sysctl CTL_VFS definitions. 292 * 293 * Second level identifier specifies which filesystem. Second level 294 * identifier VFS_VFSCONF returns information about all filesystems. 295 * Second level identifier VFS_GENERIC is non-terminal. 296 */ 297 #define VFS_VFSCONF 0 /* get configured filesystems */ 298 #define VFS_GENERIC 0 /* generic filesystem information */ 299 /* 300 * Third level identifiers for VFS_GENERIC are given below; third 301 * level identifiers for specific filesystems are given in their 302 * mount specific header files. 303 */ 304 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 305 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 306 as next argument */ 307 308 /* 309 * Flags for various system call interfaces. 310 * 311 * waitfor flags to vfs_sync() and getfsstat() 312 */ 313 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 314 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 315 #define MNT_LAZY 4 /* be lazy and do not necessarily push it all */ 316 317 /* 318 * Generic file handle 319 */ 320 struct fhandle { 321 fsid_t fh_fsid; /* File system id of mount point */ 322 struct fid fh_fid; /* File sys specific id */ 323 }; 324 typedef struct fhandle fhandle_t; 325 326 /* 327 * Export arguments for local filesystem mount calls. 328 */ 329 struct export_args { 330 int ex_flags; /* export related flags */ 331 uid_t ex_root; /* mapping for root uid */ 332 struct ucred ex_anon; /* mapping for anonymous user */ 333 struct sockaddr *ex_addr; /* net address to which exported */ 334 int ex_addrlen; /* and the net address length */ 335 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 336 int ex_masklen; /* and the smask length */ 337 char *ex_indexfile; /* index file for WebNFS URLs */ 338 }; 339 340 /* 341 * Structure holding information for a publicly exported filesystem 342 * (WebNFS). Currently the specs allow just for one such filesystem. 343 */ 344 struct nfs_public { 345 int np_valid; /* Do we hold valid information */ 346 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 347 struct mount *np_mount; /* Mountpoint of exported fs */ 348 char *np_index; /* Index file */ 349 }; 350 351 /* 352 * Filesystem configuration information. One of these exists for each 353 * type of filesystem supported by the kernel. These are searched at 354 * mount time to identify the requested filesystem. 355 */ 356 struct vfsconf { 357 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 358 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 359 int vfc_typenum; /* historic filesystem type number */ 360 int vfc_refcount; /* number mounted of this type */ 361 int vfc_flags; /* permanent flags */ 362 struct vfsconf *vfc_next; /* next in list */ 363 }; 364 365 struct ovfsconf { 366 void *vfc_vfsops; 367 char vfc_name[32]; 368 int vfc_index; 369 int vfc_refcount; 370 int vfc_flags; 371 }; 372 373 /* 374 * NB: these flags refer to IMPLEMENTATION properties, not properties of 375 * any actual mounts; i.e., it does not make sense to change the flags. 376 */ 377 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 378 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 379 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 380 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 381 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 382 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 383 384 #ifdef _KERNEL 385 386 #ifdef MALLOC_DECLARE 387 MALLOC_DECLARE(M_MOUNT); 388 #endif 389 extern int maxvfsconf; /* highest defined filesystem type */ 390 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 391 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 392 393 #endif 394 395 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 396 397 TAILQ_HEAD(mntlist, mount); /* struct mntlist */ 398 399 /* 400 * Operations supported on mounted file system. 401 */ 402 #ifdef __STDC__ 403 struct nlookupdata; 404 struct nlookupdata; 405 struct mbuf; 406 #endif 407 408 typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data, 409 struct ucred *cred); 410 typedef int vfs_start_t(struct mount *mp, int flags); 411 typedef int vfs_unmount_t(struct mount *mp, int mntflags); 412 typedef int vfs_root_t(struct mount *mp, struct vnode **vpp); 413 typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg, 414 struct ucred *cred); 415 typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp, 416 struct ucred *cred); 417 typedef int vfs_sync_t(struct mount *mp, int waitfor); 418 typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp); 419 typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp, 420 struct vnode **vpp); 421 typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam, 422 int *extflagsp, struct ucred **credanonp); 423 typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp); 424 typedef int vfs_init_t(struct vfsconf *); 425 typedef int vfs_uninit_t(struct vfsconf *); 426 typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname, 427 caddr_t arg, struct ucred *cred); 428 429 struct vfsops { 430 vfs_mount_t *vfs_mount; 431 vfs_start_t *vfs_start; 432 vfs_unmount_t *vfs_unmount; 433 vfs_root_t *vfs_root; 434 vfs_quotactl_t *vfs_quotactl; 435 vfs_statfs_t *vfs_statfs; 436 vfs_sync_t *vfs_sync; 437 vfs_vget_t *vfs_vget; 438 vfs_fhtovp_t *vfs_fhtovp; 439 vfs_checkexp_t *vfs_checkexp; 440 vfs_vptofh_t *vfs_vptofh; 441 vfs_init_t *vfs_init; 442 vfs_uninit_t *vfs_uninit; 443 vfs_extattrctl_t *vfs_extattrctl; 444 }; 445 446 #define VFS_MOUNT(MP, PATH, DATA, CRED) \ 447 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED) 448 #define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS) 449 #define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE) 450 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 451 #define VFS_QUOTACTL(MP,C,U,A,CRED) \ 452 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED) 453 #define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED) 454 #define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT) 455 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 456 #define VFS_FHTOVP(MP, FIDP, VPP) \ 457 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 458 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 459 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 460 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 461 #define VFS_EXTATTRCTL(MP, C, N, A, CRED) \ 462 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED) 463 464 #endif 465 466 #ifdef _KERNEL 467 468 #include <sys/module.h> 469 470 #define VFS_SET(vfsops, fsname, flags) \ 471 static struct vfsconf fsname ## _vfsconf = { \ 472 &vfsops, \ 473 #fsname, \ 474 -1, \ 475 0, \ 476 flags, \ 477 NULL \ 478 }; \ 479 static moduledata_t fsname ## _mod = { \ 480 #fsname, \ 481 vfs_modevent, \ 482 & fsname ## _vfsconf \ 483 }; \ 484 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 485 486 #endif 487 488 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 489 490 #include <net/radix.h> 491 492 #define AF_MAX 33 /* XXX */ 493 494 /* 495 * Network address lookup element 496 */ 497 struct netcred { 498 struct radix_node netc_rnodes[2]; 499 int netc_exflags; 500 struct ucred netc_anon; 501 }; 502 503 /* 504 * Network export information 505 */ 506 struct netexport { 507 struct netcred ne_defexported; /* Default export */ 508 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 509 }; 510 511 #endif 512 513 #ifdef _KERNEL 514 515 extern char *mountrootfsname; 516 517 /* 518 * exported vnode operations 519 */ 520 int dounmount (struct mount *, int); 521 int vfs_setpublicfs /* set publicly exported fs */ 522 (struct mount *, struct netexport *, struct export_args *); 523 int vfs_lock (struct mount *); /* lock a vfs */ 524 void vfs_msync (struct mount *, int); 525 void vfs_unlock (struct mount *); /* unlock a vfs */ 526 int vfs_busy (struct mount *, int); 527 void vfs_bufstats(void); 528 int vfs_export /* process mount export info */ 529 (struct mount *, struct netexport *, struct export_args *); 530 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 531 (struct mount *, struct netexport *, struct sockaddr *); 532 int vfs_allocate_syncvnode (struct mount *); 533 void vfs_getnewfsid (struct mount *); 534 cdev_t vfs_getrootfsid (struct mount *); 535 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */ 536 int vfs_modevent (module_t, int, void *); 537 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */ 538 int vfs_rootmountalloc (char *, char *, struct mount **); 539 void vfs_unbusy (struct mount *); 540 void vfs_unmountall (void); 541 int vfs_register (struct vfsconf *); 542 int vfs_unregister (struct vfsconf *); 543 extern struct nfs_public nfs_pub; 544 545 /* 546 * Declarations for these vfs default operations are located in 547 * kern/vfs_default.c, they should be used instead of making "dummy" 548 * functions or casting entries in the VFS op table to "enopnotsupp()". 549 */ 550 vfs_start_t vfs_stdstart; 551 vfs_mount_t vfs_stdmount; 552 vfs_unmount_t vfs_stdunmount; 553 vfs_root_t vfs_stdroot; 554 vfs_quotactl_t vfs_stdquotactl; 555 vfs_statfs_t vfs_stdstatfs; 556 vfs_sync_t vfs_stdsync; 557 vfs_sync_t vfs_stdnosync; 558 vfs_vget_t vfs_stdvget; 559 vfs_fhtovp_t vfs_stdfhtovp; 560 vfs_checkexp_t vfs_stdcheckexp; 561 vfs_vptofh_t vfs_stdvptofh; 562 vfs_init_t vfs_stdinit; 563 vfs_uninit_t vfs_stduninit; 564 vfs_extattrctl_t vfs_stdextattrctl; 565 566 struct vop_access_args; 567 int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid, 568 mode_t ino_mode, u_int32_t ino_flags); 569 int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags, 570 uid_t uid, struct ucred *cred); 571 uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid, 572 struct ucred *cred, mode_t *modep); 573 574 void add_bio_ops(struct bio_ops *ops); 575 void rem_bio_ops(struct bio_ops *ops); 576 577 int journal_mountctl(struct vop_mountctl_args *ap); 578 void journal_remove_all_journals(struct mount *mp, int flags); 579 580 void mountlist_insert(struct mount *, int); 581 int mountlist_interlock(int (*callback)(struct mount *), struct mount *); 582 struct mount *mountlist_boot_getfirst(void); 583 void mountlist_remove(struct mount *mp); 584 int mountlist_scan(int (*callback)(struct mount *, void *), void *, int); 585 586 #else /* !_KERNEL */ 587 588 #include <sys/cdefs.h> 589 590 __BEGIN_DECLS 591 int fstatfs (int, struct statfs *); 592 int getfh (const char *, fhandle_t *); 593 int getfsstat (struct statfs *, long, int); 594 int getmntinfo (struct statfs **, int); 595 int mount (const char *, const char *, int, void *); 596 int statfs (const char *, struct statfs *); 597 int unmount (const char *, int); 598 int fhopen (const struct fhandle *, int); 599 int fhstat (const struct fhandle *, struct stat *); 600 int fhstatfs (const struct fhandle *, struct statfs *); 601 602 /* C library stuff */ 603 void endvfsent (void); 604 struct ovfsconf *getvfsbyname (const char *); 605 struct ovfsconf *getvfsbytype (int); 606 struct ovfsconf *getvfsent (void); 607 #define getvfsbyname new_getvfsbyname 608 int new_getvfsbyname (const char *, struct vfsconf *); 609 void setvfsent (int); 610 int vfsisloadable (const char *); 611 int vfsload (const char *); 612 __END_DECLS 613 614 #endif /* _KERNEL */ 615 616 #endif /* !_SYS_MOUNT_H_ */ 617 618