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 1.14 2004/11/12 00:09:27 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 #include <sys/queue.h> 50 #ifdef _KERNEL 51 #include <sys/lock.h> 52 #endif 53 54 struct thread; 55 struct vop_ops; 56 57 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 58 59 /* 60 * File identifier. 61 * These are unique per filesystem on a single machine. 62 */ 63 #define MAXFIDSZ 16 64 65 struct fid { 66 u_short fid_len; /* length of data in bytes */ 67 u_short fid_reserved; /* force longword alignment */ 68 char fid_data[MAXFIDSZ]; /* data (variable length) */ 69 }; 70 71 /* 72 * file system statistics 73 */ 74 75 #define MFSNAMELEN 16 /* length of fs type name, including null */ 76 #define MNAMELEN 80 /* length of buffer for returned name */ 77 78 struct statfs { 79 long f_spare2; /* placeholder */ 80 long f_bsize; /* fundamental file system block size */ 81 long f_iosize; /* optimal transfer block size */ 82 long f_blocks; /* total data blocks in file system */ 83 long f_bfree; /* free blocks in fs */ 84 long f_bavail; /* free blocks avail to non-superuser */ 85 long f_files; /* total file nodes in file system */ 86 long f_ffree; /* free file nodes in fs */ 87 fsid_t f_fsid; /* file system id */ 88 uid_t f_owner; /* user that mounted the filesystem */ 89 int f_type; /* type of filesystem */ 90 int f_flags; /* copy of mount exported flags */ 91 long f_syncwrites; /* count of sync writes since mount */ 92 long f_asyncwrites; /* count of async writes since mount */ 93 char f_fstypename[MFSNAMELEN]; /* fs type name */ 94 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 95 long f_syncreads; /* count of sync reads since mount */ 96 long f_asyncreads; /* count of async reads since mount */ 97 short f_spares1; /* unused spare */ 98 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 99 short f_spares2; /* unused spare */ 100 long f_spare[2]; /* unused spare */ 101 }; 102 103 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 104 /* 105 * Structure per mounted file system. Each mounted file system has an 106 * array of operations and an instance record. The file systems are 107 * put on a doubly linked list. 108 * 109 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 110 * are linked into mnt_nvnodelist. At some point in the near future the 111 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 112 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 113 * list. Filesystem kld's syncing code should remain compatible since 114 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 115 * 116 * NOTE: mnt_fsmanage structures. These structures are required by the new 117 * vnode operations vector abstraction. Each one contains its own operations 118 * vector which is registered just like VNODEOP_SET/vnodeopv_desc except it 119 * is done in the mount code rather then on vfs initialization. This 120 * structure is responsible for per-mount management, including vfs threading, 121 * journaling, and so forth. 122 * 123 * NOTE: Any vnode marked VPLACEMARKER is a placemarker and should ALWAYS BE 124 * SKIPPED. NO OTHER FIELDS IN SUCH VNODES ARE VALID. 125 * 126 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that 127 * only take namecache pointers will not be able to find their operations 128 * vector via namecache->nc_mount. 129 */ 130 TAILQ_HEAD(vnodelst, vnode); 131 132 struct mount { 133 TAILQ_ENTRY(mount) mnt_list; /* mount list */ 134 struct vfsops *mnt_op; /* operations on fs */ 135 struct vfsconf *mnt_vfc; /* configuration info */ 136 struct vnode *mnt_vnodecovered; /* vnode we mounted on */ 137 struct vnode *mnt_syncer; /* syncer vnode */ 138 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */ 139 struct lock mnt_lock; /* mount structure lock */ 140 int mnt_flag; /* flags shared with user */ 141 int mnt_kern_flag; /* kernel only flags */ 142 int mnt_maxsymlinklen; /* max size of short symlink */ 143 struct statfs mnt_stat; /* cache of filesystem stats */ 144 qaddr_t mnt_data; /* private data */ 145 time_t mnt_time; /* last time written*/ 146 u_int mnt_iosize_max; /* max IO request size */ 147 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */ 148 int mnt_nvnodelistsize; /* # of vnodes on this mount */ 149 struct vop_ops *mnt_vn_ops; /* for use by the VFS */ 150 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */ 151 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */ 152 struct namecache *mnt_ncp; /* NCF_MNTPT ncp */ 153 }; 154 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 155 156 /* 157 * User specifiable flags. 158 */ 159 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 160 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 161 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 162 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 163 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 164 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 165 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 166 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 167 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 168 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 169 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 170 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 171 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 172 173 /* 174 * NFS export related mount flags. 175 */ 176 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 177 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 178 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 179 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 180 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 181 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 182 183 /* 184 * Flags set by internal operations, 185 * but visible to the user. 186 * XXX some of these are not quite right.. (I've never seen the root flag set) 187 */ 188 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 189 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 190 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 191 #define MNT_USER 0x00008000 /* mounted by a user */ 192 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 193 194 /* 195 * Mask of flags that are visible to statfs() 196 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 197 * but the 'mount' program may need changing to handle this. 198 */ 199 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 200 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 201 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 202 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 203 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 204 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 205 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 206 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 207 /* 208 * External filesystem command modifier flags. 209 * Unmount can use the MNT_FORCE flag. 210 * XXX These are not STATES and really should be somewhere else. 211 */ 212 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 213 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 214 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 215 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 216 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 217 /* 218 * Internal filesystem control flags stored in mnt_kern_flag. 219 * 220 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 221 * past the mount point. This keeps the subtree stable during mounts 222 * and unmounts. 223 * 224 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 225 * dounmount() is still waiting to lock the mountpoint. This allows 226 * the filesystem to cancel operations that might otherwise deadlock 227 * with the unmount attempt (used by NFS). 228 */ 229 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 230 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 231 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 232 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 233 234 /* 235 * Sysctl CTL_VFS definitions. 236 * 237 * Second level identifier specifies which filesystem. Second level 238 * identifier VFS_VFSCONF returns information about all filesystems. 239 * Second level identifier VFS_GENERIC is non-terminal. 240 */ 241 #define VFS_VFSCONF 0 /* get configured filesystems */ 242 #define VFS_GENERIC 0 /* generic filesystem information */ 243 /* 244 * Third level identifiers for VFS_GENERIC are given below; third 245 * level identifiers for specific filesystems are given in their 246 * mount specific header files. 247 */ 248 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 249 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 250 as next argument */ 251 252 /* 253 * Flags for various system call interfaces. 254 * 255 * waitfor flags to vfs_sync() and getfsstat() 256 */ 257 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 258 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 259 #define MNT_LAZY 3 /* push data not written by filesystem syncer */ 260 261 /* 262 * Generic file handle 263 */ 264 struct fhandle { 265 fsid_t fh_fsid; /* File system id of mount point */ 266 struct fid fh_fid; /* File sys specific id */ 267 }; 268 typedef struct fhandle fhandle_t; 269 270 /* 271 * Export arguments for local filesystem mount calls. 272 */ 273 struct export_args { 274 int ex_flags; /* export related flags */ 275 uid_t ex_root; /* mapping for root uid */ 276 struct ucred ex_anon; /* mapping for anonymous user */ 277 struct sockaddr *ex_addr; /* net address to which exported */ 278 int ex_addrlen; /* and the net address length */ 279 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 280 int ex_masklen; /* and the smask length */ 281 char *ex_indexfile; /* index file for WebNFS URLs */ 282 }; 283 284 /* 285 * Structure holding information for a publicly exported filesystem 286 * (WebNFS). Currently the specs allow just for one such filesystem. 287 */ 288 struct nfs_public { 289 int np_valid; /* Do we hold valid information */ 290 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 291 struct mount *np_mount; /* Mountpoint of exported fs */ 292 char *np_index; /* Index file */ 293 }; 294 295 /* 296 * Filesystem configuration information. One of these exists for each 297 * type of filesystem supported by the kernel. These are searched at 298 * mount time to identify the requested filesystem. 299 */ 300 struct vfsconf { 301 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 302 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 303 int vfc_typenum; /* historic filesystem type number */ 304 int vfc_refcount; /* number mounted of this type */ 305 int vfc_flags; /* permanent flags */ 306 struct vfsconf *vfc_next; /* next in list */ 307 }; 308 309 struct ovfsconf { 310 void *vfc_vfsops; 311 char vfc_name[32]; 312 int vfc_index; 313 int vfc_refcount; 314 int vfc_flags; 315 }; 316 317 /* 318 * NB: these flags refer to IMPLEMENTATION properties, not properties of 319 * any actual mounts; i.e., it does not make sense to change the flags. 320 */ 321 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 322 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 323 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 324 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 325 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 326 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 327 328 #ifdef _KERNEL 329 330 #ifdef MALLOC_DECLARE 331 MALLOC_DECLARE(M_MOUNT); 332 #endif 333 extern int maxvfsconf; /* highest defined filesystem type */ 334 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 335 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 336 337 #endif 338 339 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 340 341 TAILQ_HEAD(mntlist, mount); /* struct mntlist */ 342 343 /* 344 * Operations supported on mounted file system. 345 */ 346 #ifdef __STDC__ 347 struct nlookupdata; 348 struct nlookupdata; 349 struct mbuf; 350 #endif 351 352 struct vfsops { 353 int (*vfs_mount) (struct mount *mp, char *path, caddr_t data, 354 struct thread *td); 355 int (*vfs_start) (struct mount *mp, int flags, 356 struct thread *td); 357 int (*vfs_unmount) (struct mount *mp, int mntflags, 358 struct thread *td); 359 int (*vfs_root) (struct mount *mp, struct vnode **vpp); 360 int (*vfs_quotactl) (struct mount *mp, int cmds, uid_t uid, 361 caddr_t arg, struct thread *td); 362 int (*vfs_statfs) (struct mount *mp, struct statfs *sbp, 363 struct thread *td); 364 int (*vfs_sync) (struct mount *mp, int waitfor, 365 struct thread *td); 366 int (*vfs_vget) (struct mount *mp, ino_t ino, 367 struct vnode **vpp); 368 int (*vfs_fhtovp) (struct mount *mp, struct fid *fhp, 369 struct vnode **vpp); 370 int (*vfs_checkexp) (struct mount *mp, struct sockaddr *nam, 371 int *extflagsp, struct ucred **credanonp); 372 int (*vfs_vptofh) (struct vnode *vp, struct fid *fhp); 373 int (*vfs_init) (struct vfsconf *); 374 int (*vfs_uninit) (struct vfsconf *); 375 int (*vfs_extattrctl) (struct mount *mp, int cmd, 376 const char *attrname, caddr_t arg, 377 struct thread *td); 378 }; 379 380 #define VFS_MOUNT(MP, PATH, DATA, P) \ 381 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, P) 382 #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) 383 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) 384 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 385 #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) 386 #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) 387 #define VFS_SYNC(MP, WAIT, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, P) 388 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 389 #define VFS_FHTOVP(MP, FIDP, VPP) \ 390 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 391 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 392 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 393 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 394 #define VFS_EXTATTRCTL(MP, C, N, A, P) \ 395 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, P) 396 397 #endif 398 399 #ifdef _KERNEL 400 401 #include <sys/module.h> 402 403 #define VFS_SET(vfsops, fsname, flags) \ 404 static struct vfsconf fsname ## _vfsconf = { \ 405 &vfsops, \ 406 #fsname, \ 407 -1, \ 408 0, \ 409 flags, \ 410 NULL \ 411 }; \ 412 static moduledata_t fsname ## _mod = { \ 413 #fsname, \ 414 vfs_modevent, \ 415 & fsname ## _vfsconf \ 416 }; \ 417 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 418 419 #endif 420 421 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 422 423 #include <net/radix.h> 424 425 #define AF_MAX 33 /* XXX */ 426 427 /* 428 * Network address lookup element 429 */ 430 struct netcred { 431 struct radix_node netc_rnodes[2]; 432 int netc_exflags; 433 struct ucred netc_anon; 434 }; 435 436 /* 437 * Network export information 438 */ 439 struct netexport { 440 struct netcred ne_defexported; /* Default export */ 441 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 442 }; 443 444 #endif 445 446 #ifdef _KERNEL 447 448 extern char *mountrootfsname; 449 450 /* 451 * exported vnode operations 452 */ 453 int dounmount (struct mount *, int, struct thread *); 454 int vfs_setpublicfs /* set publicly exported fs */ 455 (struct mount *, struct netexport *, struct export_args *); 456 int vfs_lock (struct mount *); /* lock a vfs */ 457 void vfs_msync (struct mount *, int); 458 void vfs_unlock (struct mount *); /* unlock a vfs */ 459 int vfs_busy (struct mount *, int, struct lwkt_tokref *, struct thread *); 460 void vfs_bufstats(void); 461 int vfs_export /* process mount export info */ 462 (struct mount *, struct netexport *, struct export_args *); 463 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 464 (struct mount *, struct netexport *, struct sockaddr *); 465 int vfs_allocate_syncvnode (struct mount *); 466 void vfs_getnewfsid (struct mount *); 467 dev_t vfs_getrootfsid (struct mount *); 468 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */ 469 int vfs_modevent (module_t, int, void *); 470 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */ 471 int vfs_rootmountalloc (char *, char *, struct mount **); 472 void vfs_unbusy (struct mount *, struct thread *); 473 void vfs_unmountall (void); 474 int vfs_register (struct vfsconf *); 475 int vfs_unregister (struct vfsconf *); 476 extern struct mntlist mountlist; /* mounted filesystem list */ 477 extern struct lwkt_token mountlist_token; 478 extern struct nfs_public nfs_pub; 479 480 /* 481 * Declarations for these vfs default operations are located in 482 * kern/vfs_default.c, they should be used instead of making "dummy" 483 * functions or casting entries in the VFS op table to "enopnotsupp()". 484 */ 485 int vfs_stdmount (struct mount *mp, char *path, caddr_t data, 486 struct nlookupdata *ndp, struct thread *p); 487 int vfs_stdstart (struct mount *mp, int flags, struct thread *p); 488 int vfs_stdunmount (struct mount *mp, int mntflags, struct thread *p); 489 int vfs_stdroot (struct mount *mp, struct vnode **vpp); 490 int vfs_stdquotactl (struct mount *mp, int cmds, uid_t uid, 491 caddr_t arg, struct thread *p); 492 int vfs_stdstatfs (struct mount *mp, struct statfs *sbp, struct thread *p); 493 int vfs_stdsync (struct mount *mp, int waitfor, struct thread *td); 494 int vfs_stdvget (struct mount *mp, ino_t ino, struct vnode **vpp); 495 int vfs_stdfhtovp (struct mount *mp, struct fid *fhp, struct vnode **vpp); 496 int vfs_stdcheckexp (struct mount *mp, struct sockaddr *nam, 497 int *extflagsp, struct ucred **credanonp); 498 int vfs_stdvptofh (struct vnode *vp, struct fid *fhp); 499 int vfs_stdinit (struct vfsconf *); 500 int vfs_stduninit (struct vfsconf *); 501 int vfs_stdextattrctl (struct mount *mp, int cmd, const char *attrname, 502 caddr_t arg, struct thread *p); 503 504 #else /* !_KERNEL */ 505 506 #include <sys/cdefs.h> 507 508 __BEGIN_DECLS 509 int fstatfs (int, struct statfs *); 510 int getfh (const char *, fhandle_t *); 511 int getfsstat (struct statfs *, long, int); 512 int getmntinfo (struct statfs **, int); 513 int mount (const char *, const char *, int, void *); 514 int statfs (const char *, struct statfs *); 515 int unmount (const char *, int); 516 int fhopen (const struct fhandle *, int); 517 int fhstat (const struct fhandle *, struct stat *); 518 int fhstatfs (const struct fhandle *, struct statfs *); 519 520 /* C library stuff */ 521 void endvfsent (void); 522 struct ovfsconf *getvfsbyname (const char *); 523 struct ovfsconf *getvfsbytype (int); 524 struct ovfsconf *getvfsent (void); 525 #define getvfsbyname new_getvfsbyname 526 int new_getvfsbyname (const char *, struct vfsconf *); 527 void setvfsent (int); 528 int vfsisloadable (const char *); 529 int vfsload (const char *); 530 __END_DECLS 531 532 #endif /* _KERNEL */ 533 534 #endif /* !_SYS_MOUNT_H_ */ 535 536