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 */ 36 37 #ifndef _SYS_MOUNT_H_ 38 #define _SYS_MOUNT_H_ 39 40 #include <sys/ucred.h> 41 42 #ifndef _KERNEL 43 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) 44 #include <sys/stat.h> 45 #endif /* !_POSIX_C_SOURCE */ 46 #endif /* !_KERNEL */ 47 48 #include <sys/queue.h> 49 #ifdef _KERNEL 50 #include <sys/lock.h> 51 #endif 52 53 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 54 55 /* 56 * File identifier. 57 * These are unique per filesystem on a single machine. 58 */ 59 #define MAXFIDSZ 16 60 61 struct fid { 62 u_short fid_len; /* length of data in bytes */ 63 u_short fid_reserved; /* force longword alignment */ 64 char fid_data[MAXFIDSZ]; /* data (variable length) */ 65 }; 66 67 /* 68 * file system statistics 69 */ 70 71 #define MFSNAMELEN 16 /* length of fs type name, including null */ 72 #ifdef __i386__ 73 #define MNAMELEN 80 /* length of buffer for returned name */ 74 #endif 75 #ifdef __alpha__ 76 #define MNAMELEN 72 /* length of buffer for returned name */ 77 #endif 78 79 struct statfs { 80 long f_spare2; /* placeholder */ 81 long f_bsize; /* fundamental file system block size */ 82 long f_iosize; /* optimal transfer block size */ 83 long f_blocks; /* total data blocks in file system */ 84 long f_bfree; /* free blocks in fs */ 85 long f_bavail; /* free blocks avail to non-superuser */ 86 long f_files; /* total file nodes in file system */ 87 long f_ffree; /* free file nodes in fs */ 88 fsid_t f_fsid; /* file system id */ 89 uid_t f_owner; /* user that mounted the filesystem */ 90 int f_type; /* type of filesystem */ 91 int f_flags; /* copy of mount exported flags */ 92 long f_syncwrites; /* count of sync writes since mount */ 93 long f_asyncwrites; /* count of async writes since mount */ 94 char f_fstypename[MFSNAMELEN]; /* fs type name */ 95 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 96 long f_syncreads; /* count of sync reads since mount */ 97 long f_asyncreads; /* count of async reads since mount */ 98 short f_spares1; /* unused spare */ 99 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 100 short f_spares2; /* unused spare */ 101 long f_spare[2]; /* unused spare */ 102 }; 103 104 #ifdef _KERNEL 105 /* 106 * Structure per mounted file system. Each mounted file system has an 107 * array of operations and an instance record. The file systems are 108 * put on a doubly linked list. 109 * 110 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 111 * are linked into mnt_nvnodelist. At some point in the near future the 112 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 113 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 114 * list. Filesystem kld's syncing code should remain compatible since 115 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 116 */ 117 TAILQ_HEAD(vnodelst, vnode); 118 119 struct mount { 120 TAILQ_ENTRY(mount) mnt_list; /* mount list */ 121 struct vfsops *mnt_op; /* operations on fs */ 122 struct vfsconf *mnt_vfc; /* configuration info */ 123 struct vnode *mnt_vnodecovered; /* vnode we mounted on */ 124 struct vnode *mnt_syncer; /* syncer vnode */ 125 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */ 126 struct lock mnt_lock; /* mount structure lock */ 127 int mnt_flag; /* flags shared with user */ 128 int mnt_kern_flag; /* kernel only flags */ 129 int mnt_maxsymlinklen; /* max size of short symlink */ 130 struct statfs mnt_stat; /* cache of filesystem stats */ 131 qaddr_t mnt_data; /* private data */ 132 time_t mnt_time; /* last time written*/ 133 u_int mnt_iosize_max; /* max IO request size */ 134 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */ 135 int mnt_nvnodelistsize; /* # of vnodes on this mount */ 136 }; 137 #endif /* _KERNEL */ 138 139 /* 140 * User specifiable flags. 141 */ 142 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 143 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 144 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 145 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 146 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 147 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 148 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 149 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 150 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 151 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 152 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 153 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 154 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 155 156 /* 157 * NFS export related mount flags. 158 */ 159 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 160 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 161 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 162 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 163 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 164 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 165 166 /* 167 * Flags set by internal operations, 168 * but visible to the user. 169 * XXX some of these are not quite right.. (I've never seen the root flag set) 170 */ 171 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 172 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 173 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 174 #define MNT_USER 0x00008000 /* mounted by a user */ 175 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 176 177 /* 178 * Mask of flags that are visible to statfs() 179 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 180 * but the 'mount' program may need changing to handle this. 181 */ 182 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 183 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 184 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 185 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 186 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 187 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 188 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 189 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 190 /* 191 * External filesystem command modifier flags. 192 * Unmount can use the MNT_FORCE flag. 193 * XXX These are not STATES and really should be somewhere else. 194 */ 195 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 196 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 197 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 198 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 199 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 200 /* 201 * Internal filesystem control flags stored in mnt_kern_flag. 202 * 203 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 204 * past the mount point. This keeps the subtree stable during mounts 205 * and unmounts. 206 * 207 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 208 * dounmount() is still waiting to lock the mountpoint. This allows 209 * the filesystem to cancel operations that might otherwise deadlock 210 * with the unmount attempt (used by NFS). 211 */ 212 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 213 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 214 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 215 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 216 217 /* 218 * Sysctl CTL_VFS definitions. 219 * 220 * Second level identifier specifies which filesystem. Second level 221 * identifier VFS_VFSCONF returns information about all filesystems. 222 * Second level identifier VFS_GENERIC is non-terminal. 223 */ 224 #define VFS_VFSCONF 0 /* get configured filesystems */ 225 #define VFS_GENERIC 0 /* generic filesystem information */ 226 /* 227 * Third level identifiers for VFS_GENERIC are given below; third 228 * level identifiers for specific filesystems are given in their 229 * mount specific header files. 230 */ 231 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 232 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 233 as next argument */ 234 235 /* 236 * Flags for various system call interfaces. 237 * 238 * waitfor flags to vfs_sync() and getfsstat() 239 */ 240 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 241 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 242 #define MNT_LAZY 3 /* push data not written by filesystem syncer */ 243 244 /* 245 * Generic file handle 246 */ 247 struct fhandle { 248 fsid_t fh_fsid; /* File system id of mount point */ 249 struct fid fh_fid; /* File sys specific id */ 250 }; 251 typedef struct fhandle fhandle_t; 252 253 /* 254 * Export arguments for local filesystem mount calls. 255 */ 256 struct export_args { 257 int ex_flags; /* export related flags */ 258 uid_t ex_root; /* mapping for root uid */ 259 struct ucred ex_anon; /* mapping for anonymous user */ 260 struct sockaddr *ex_addr; /* net address to which exported */ 261 int ex_addrlen; /* and the net address length */ 262 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 263 int ex_masklen; /* and the smask length */ 264 char *ex_indexfile; /* index file for WebNFS URLs */ 265 }; 266 267 /* 268 * Structure holding information for a publicly exported filesystem 269 * (WebNFS). Currently the specs allow just for one such filesystem. 270 */ 271 struct nfs_public { 272 int np_valid; /* Do we hold valid information */ 273 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 274 struct mount *np_mount; /* Mountpoint of exported fs */ 275 char *np_index; /* Index file */ 276 }; 277 278 /* 279 * Filesystem configuration information. One of these exists for each 280 * type of filesystem supported by the kernel. These are searched at 281 * mount time to identify the requested filesystem. 282 */ 283 struct vfsconf { 284 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 285 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 286 int vfc_typenum; /* historic filesystem type number */ 287 int vfc_refcount; /* number mounted of this type */ 288 int vfc_flags; /* permanent flags */ 289 struct vfsconf *vfc_next; /* next in list */ 290 }; 291 292 struct ovfsconf { 293 void *vfc_vfsops; 294 char vfc_name[32]; 295 int vfc_index; 296 int vfc_refcount; 297 int vfc_flags; 298 }; 299 300 /* 301 * NB: these flags refer to IMPLEMENTATION properties, not properties of 302 * any actual mounts; i.e., it does not make sense to change the flags. 303 */ 304 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 305 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 306 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 307 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 308 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 309 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 310 311 #ifdef _KERNEL 312 313 #ifdef MALLOC_DECLARE 314 MALLOC_DECLARE(M_MOUNT); 315 #endif 316 extern int maxvfsconf; /* highest defined filesystem type */ 317 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 318 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 319 320 /* 321 * Operations supported on mounted file system. 322 */ 323 #ifdef __STDC__ 324 struct nameidata; 325 struct mbuf; 326 #endif 327 328 struct vfsops { 329 int (*vfs_mount) __P((struct mount *mp, char *path, caddr_t data, 330 struct nameidata *ndp, struct proc *p)); 331 int (*vfs_start) __P((struct mount *mp, int flags, 332 struct proc *p)); 333 int (*vfs_unmount) __P((struct mount *mp, int mntflags, 334 struct proc *p)); 335 int (*vfs_root) __P((struct mount *mp, struct vnode **vpp)); 336 int (*vfs_quotactl) __P((struct mount *mp, int cmds, uid_t uid, 337 caddr_t arg, struct proc *p)); 338 int (*vfs_statfs) __P((struct mount *mp, struct statfs *sbp, 339 struct proc *p)); 340 int (*vfs_sync) __P((struct mount *mp, int waitfor, 341 struct ucred *cred, struct proc *p)); 342 int (*vfs_vget) __P((struct mount *mp, ino_t ino, 343 struct vnode **vpp)); 344 int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp, 345 struct vnode **vpp)); 346 int (*vfs_checkexp) __P((struct mount *mp, struct sockaddr *nam, 347 int *extflagsp, struct ucred **credanonp)); 348 int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp)); 349 int (*vfs_init) __P((struct vfsconf *)); 350 int (*vfs_uninit) __P((struct vfsconf *)); 351 int (*vfs_extattrctl) __P((struct mount *mp, int cmd, 352 const char *attrname, caddr_t arg, 353 struct proc *p)); 354 }; 355 356 #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \ 357 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P) 358 #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) 359 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) 360 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 361 #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) 362 #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) 363 #define VFS_SYNC(MP, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P) 364 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 365 #define VFS_FHTOVP(MP, FIDP, VPP) \ 366 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 367 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 368 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 369 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 370 #define VFS_EXTATTRCTL(MP, C, N, A, P) \ 371 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, P) 372 373 #include <sys/module.h> 374 375 #define VFS_SET(vfsops, fsname, flags) \ 376 static struct vfsconf fsname ## _vfsconf = { \ 377 &vfsops, \ 378 #fsname, \ 379 -1, \ 380 0, \ 381 flags \ 382 }; \ 383 static moduledata_t fsname ## _mod = { \ 384 #fsname, \ 385 vfs_modevent, \ 386 & fsname ## _vfsconf \ 387 }; \ 388 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 389 390 #include <net/radix.h> 391 392 #define AF_MAX 33 /* XXX */ 393 394 /* 395 * Network address lookup element 396 */ 397 struct netcred { 398 struct radix_node netc_rnodes[2]; 399 int netc_exflags; 400 struct ucred netc_anon; 401 }; 402 403 /* 404 * Network export information 405 */ 406 struct netexport { 407 struct netcred ne_defexported; /* Default export */ 408 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 409 }; 410 411 extern char *mountrootfsname; 412 413 /* 414 * exported vnode operations 415 */ 416 int dounmount __P((struct mount *, int, struct proc *)); 417 int vfs_setpublicfs /* set publicly exported fs */ 418 __P((struct mount *, struct netexport *, struct export_args *)); 419 int vfs_lock __P((struct mount *)); /* lock a vfs */ 420 void vfs_msync __P((struct mount *, int)); 421 void vfs_unlock __P((struct mount *)); /* unlock a vfs */ 422 int vfs_busy __P((struct mount *, int, struct simplelock *, struct proc *)); 423 int vfs_export /* process mount export info */ 424 __P((struct mount *, struct netexport *, struct export_args *)); 425 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 426 __P((struct mount *, struct netexport *, struct sockaddr *)); 427 int vfs_allocate_syncvnode __P((struct mount *)); 428 void vfs_getnewfsid __P((struct mount *)); 429 dev_t vfs_getrootfsid __P((struct mount *)); 430 struct mount *vfs_getvfs __P((fsid_t *)); /* return vfs given fsid */ 431 int vfs_modevent __P((module_t, int, void *)); 432 int vfs_mountedon __P((struct vnode *)); /* is a vfs mounted on vp */ 433 int vfs_rootmountalloc __P((char *, char *, struct mount **)); 434 void vfs_unbusy __P((struct mount *, struct proc *)); 435 void vfs_unmountall __P((void)); 436 int vfs_register __P((struct vfsconf *)); 437 int vfs_unregister __P((struct vfsconf *)); 438 extern TAILQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */ 439 extern struct simplelock mountlist_slock; 440 extern struct nfs_public nfs_pub; 441 442 /* 443 * Declarations for these vfs default operations are located in 444 * kern/vfs_default.c, they should be used instead of making "dummy" 445 * functions or casting entries in the VFS op table to "enopnotsupp()". 446 */ 447 int vfs_stdmount __P((struct mount *mp, char *path, caddr_t data, 448 struct nameidata *ndp, struct proc *p)); 449 int vfs_stdstart __P((struct mount *mp, int flags, struct proc *p)); 450 int vfs_stdunmount __P((struct mount *mp, int mntflags, struct proc *p)); 451 int vfs_stdroot __P((struct mount *mp, struct vnode **vpp)); 452 int vfs_stdquotactl __P((struct mount *mp, int cmds, uid_t uid, 453 caddr_t arg, struct proc *p)); 454 int vfs_stdstatfs __P((struct mount *mp, struct statfs *sbp, struct proc *p)); 455 int vfs_stdsync __P((struct mount *mp, int waitfor, struct ucred *cred, 456 struct proc *p)); 457 int vfs_stdvget __P((struct mount *mp, ino_t ino, struct vnode **vpp)); 458 int vfs_stdfhtovp __P((struct mount *mp, struct fid *fhp, struct vnode **vpp)); 459 int vfs_stdcheckexp __P((struct mount *mp, struct sockaddr *nam, 460 int *extflagsp, struct ucred **credanonp)); 461 int vfs_stdvptofh __P((struct vnode *vp, struct fid *fhp)); 462 int vfs_stdinit __P((struct vfsconf *)); 463 int vfs_stduninit __P((struct vfsconf *)); 464 int vfs_stdextattrctl __P((struct mount *mp, int cmd, const char *attrname, 465 caddr_t arg, struct proc *p)); 466 467 #else /* !_KERNEL */ 468 469 #include <sys/cdefs.h> 470 471 __BEGIN_DECLS 472 int fstatfs __P((int, struct statfs *)); 473 int getfh __P((const char *, fhandle_t *)); 474 int getfsstat __P((struct statfs *, long, int)); 475 int getmntinfo __P((struct statfs **, int)); 476 int mount __P((const char *, const char *, int, void *)); 477 int statfs __P((const char *, struct statfs *)); 478 int unmount __P((const char *, int)); 479 int fhopen __P((const struct fhandle *, int)); 480 int fhstat __P((const struct fhandle *, struct stat *)); 481 int fhstatfs __P((const struct fhandle *, struct statfs *)); 482 483 /* C library stuff */ 484 void endvfsent __P((void)); 485 struct ovfsconf *getvfsbyname __P((const char *)); 486 struct ovfsconf *getvfsbytype __P((int)); 487 struct ovfsconf *getvfsent __P((void)); 488 #define getvfsbyname new_getvfsbyname 489 int new_getvfsbyname __P((const char *, struct vfsconf *)); 490 void setvfsent __P((int)); 491 int vfsisloadable __P((const char *)); 492 int vfsload __P((const char *)); 493 __END_DECLS 494 495 #endif /* _KERNEL */ 496 497 #endif /* !_SYS_MOUNT_H_ */ 498