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 1.7 2003/08/27 02:03:22 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 56 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */ 57 58 /* 59 * File identifier. 60 * These are unique per filesystem on a single machine. 61 */ 62 #define MAXFIDSZ 16 63 64 struct fid { 65 u_short fid_len; /* length of data in bytes */ 66 u_short fid_reserved; /* force longword alignment */ 67 char fid_data[MAXFIDSZ]; /* data (variable length) */ 68 }; 69 70 /* 71 * file system statistics 72 */ 73 74 #define MFSNAMELEN 16 /* length of fs type name, including null */ 75 #ifdef __i386__ 76 #define MNAMELEN 80 /* length of buffer for returned name */ 77 #endif 78 #ifdef __alpha__ 79 #define MNAMELEN 72 /* length of buffer for returned name */ 80 #endif 81 82 struct statfs { 83 long f_spare2; /* placeholder */ 84 long f_bsize; /* fundamental file system block size */ 85 long f_iosize; /* optimal transfer block size */ 86 long f_blocks; /* total data blocks in file system */ 87 long f_bfree; /* free blocks in fs */ 88 long f_bavail; /* free blocks avail to non-superuser */ 89 long f_files; /* total file nodes in file system */ 90 long f_ffree; /* free file nodes in fs */ 91 fsid_t f_fsid; /* file system id */ 92 uid_t f_owner; /* user that mounted the filesystem */ 93 int f_type; /* type of filesystem */ 94 int f_flags; /* copy of mount exported flags */ 95 long f_syncwrites; /* count of sync writes since mount */ 96 long f_asyncwrites; /* count of async writes since mount */ 97 char f_fstypename[MFSNAMELEN]; /* fs type name */ 98 char f_mntonname[MNAMELEN]; /* directory on which mounted */ 99 long f_syncreads; /* count of sync reads since mount */ 100 long f_asyncreads; /* count of async reads since mount */ 101 short f_spares1; /* unused spare */ 102 char f_mntfromname[MNAMELEN];/* mounted filesystem */ 103 short f_spares2; /* unused spare */ 104 long f_spare[2]; /* unused spare */ 105 }; 106 107 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 108 /* 109 * Structure per mounted file system. Each mounted file system has an 110 * array of operations and an instance record. The file systems are 111 * put on a doubly linked list. 112 * 113 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes 114 * are linked into mnt_nvnodelist. At some point in the near future the 115 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist 116 * will become the dirty list and mnt_reservedvnlist will become the 'clean' 117 * list. Filesystem kld's syncing code should remain compatible since 118 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist). 119 */ 120 TAILQ_HEAD(vnodelst, vnode); 121 122 struct mount { 123 TAILQ_ENTRY(mount) mnt_list; /* mount list */ 124 struct vfsops *mnt_op; /* operations on fs */ 125 struct vfsconf *mnt_vfc; /* configuration info */ 126 struct vnode *mnt_vnodecovered; /* vnode we mounted on */ 127 struct vnode *mnt_syncer; /* syncer vnode */ 128 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */ 129 struct lock mnt_lock; /* mount structure lock */ 130 int mnt_flag; /* flags shared with user */ 131 int mnt_kern_flag; /* kernel only flags */ 132 int mnt_maxsymlinklen; /* max size of short symlink */ 133 struct statfs mnt_stat; /* cache of filesystem stats */ 134 qaddr_t mnt_data; /* private data */ 135 time_t mnt_time; /* last time written*/ 136 u_int mnt_iosize_max; /* max IO request size */ 137 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */ 138 int mnt_nvnodelistsize; /* # of vnodes on this mount */ 139 }; 140 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 141 142 /* 143 * User specifiable flags. 144 */ 145 #define MNT_RDONLY 0x00000001 /* read only filesystem */ 146 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ 147 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ 148 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ 149 #define MNT_NODEV 0x00000010 /* don't interpret special files */ 150 #define MNT_UNION 0x00000020 /* union with underlying filesystem */ 151 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */ 152 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */ 153 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */ 154 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */ 155 #define MNT_NOATIME 0x10000000 /* disable update of file access time */ 156 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */ 157 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */ 158 159 /* 160 * NFS export related mount flags. 161 */ 162 #define MNT_EXRDONLY 0x00000080 /* exported read only */ 163 #define MNT_EXPORTED 0x00000100 /* file system is exported */ 164 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */ 165 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */ 166 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */ 167 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */ 168 169 /* 170 * Flags set by internal operations, 171 * but visible to the user. 172 * XXX some of these are not quite right.. (I've never seen the root flag set) 173 */ 174 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ 175 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ 176 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */ 177 #define MNT_USER 0x00008000 /* mounted by a user */ 178 #define MNT_IGNORE 0x00800000 /* do not show entry in df */ 179 180 /* 181 * Mask of flags that are visible to statfs() 182 * XXX I think that this could now become (~(MNT_CMDFLAGS)) 183 * but the 'mount' program may need changing to handle this. 184 */ 185 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \ 186 MNT_NOSUID | MNT_NODEV | MNT_UNION | \ 187 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \ 188 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \ 189 MNT_LOCAL | MNT_USER | MNT_QUOTA | \ 190 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \ 191 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \ 192 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC ) 193 /* 194 * External filesystem command modifier flags. 195 * Unmount can use the MNT_FORCE flag. 196 * XXX These are not STATES and really should be somewhere else. 197 */ 198 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ 199 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */ 200 #define MNT_RELOAD 0x00040000 /* reload filesystem data */ 201 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */ 202 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE) 203 /* 204 * Internal filesystem control flags stored in mnt_kern_flag. 205 * 206 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed 207 * past the mount point. This keeps the subtree stable during mounts 208 * and unmounts. 209 * 210 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while 211 * dounmount() is still waiting to lock the mountpoint. This allows 212 * the filesystem to cancel operations that might otherwise deadlock 213 * with the unmount attempt (used by NFS). 214 */ 215 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */ 216 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */ 217 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */ 218 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */ 219 220 /* 221 * Sysctl CTL_VFS definitions. 222 * 223 * Second level identifier specifies which filesystem. Second level 224 * identifier VFS_VFSCONF returns information about all filesystems. 225 * Second level identifier VFS_GENERIC is non-terminal. 226 */ 227 #define VFS_VFSCONF 0 /* get configured filesystems */ 228 #define VFS_GENERIC 0 /* generic filesystem information */ 229 /* 230 * Third level identifiers for VFS_GENERIC are given below; third 231 * level identifiers for specific filesystems are given in their 232 * mount specific header files. 233 */ 234 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */ 235 #define VFS_CONF 2 /* struct: vfsconf for filesystem given 236 as next argument */ 237 238 /* 239 * Flags for various system call interfaces. 240 * 241 * waitfor flags to vfs_sync() and getfsstat() 242 */ 243 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */ 244 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */ 245 #define MNT_LAZY 3 /* push data not written by filesystem syncer */ 246 247 /* 248 * Generic file handle 249 */ 250 struct fhandle { 251 fsid_t fh_fsid; /* File system id of mount point */ 252 struct fid fh_fid; /* File sys specific id */ 253 }; 254 typedef struct fhandle fhandle_t; 255 256 /* 257 * Export arguments for local filesystem mount calls. 258 */ 259 struct export_args { 260 int ex_flags; /* export related flags */ 261 uid_t ex_root; /* mapping for root uid */ 262 struct ucred ex_anon; /* mapping for anonymous user */ 263 struct sockaddr *ex_addr; /* net address to which exported */ 264 int ex_addrlen; /* and the net address length */ 265 struct sockaddr *ex_mask; /* mask of valid bits in saddr */ 266 int ex_masklen; /* and the smask length */ 267 char *ex_indexfile; /* index file for WebNFS URLs */ 268 }; 269 270 /* 271 * Structure holding information for a publicly exported filesystem 272 * (WebNFS). Currently the specs allow just for one such filesystem. 273 */ 274 struct nfs_public { 275 int np_valid; /* Do we hold valid information */ 276 fhandle_t np_handle; /* Filehandle for pub fs (internal) */ 277 struct mount *np_mount; /* Mountpoint of exported fs */ 278 char *np_index; /* Index file */ 279 }; 280 281 /* 282 * Filesystem configuration information. One of these exists for each 283 * type of filesystem supported by the kernel. These are searched at 284 * mount time to identify the requested filesystem. 285 */ 286 struct vfsconf { 287 struct vfsops *vfc_vfsops; /* filesystem operations vector */ 288 char vfc_name[MFSNAMELEN]; /* filesystem type name */ 289 int vfc_typenum; /* historic filesystem type number */ 290 int vfc_refcount; /* number mounted of this type */ 291 int vfc_flags; /* permanent flags */ 292 struct vfsconf *vfc_next; /* next in list */ 293 }; 294 295 struct ovfsconf { 296 void *vfc_vfsops; 297 char vfc_name[32]; 298 int vfc_index; 299 int vfc_refcount; 300 int vfc_flags; 301 }; 302 303 /* 304 * NB: these flags refer to IMPLEMENTATION properties, not properties of 305 * any actual mounts; i.e., it does not make sense to change the flags. 306 */ 307 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */ 308 #define VFCF_NETWORK 0x00020000 /* may get data over the network */ 309 #define VFCF_READONLY 0x00040000 /* writes are not implemented */ 310 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */ 311 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */ 312 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/ 313 314 #ifdef _KERNEL 315 316 #ifdef MALLOC_DECLARE 317 MALLOC_DECLARE(M_MOUNT); 318 #endif 319 extern int maxvfsconf; /* highest defined filesystem type */ 320 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */ 321 extern struct vfsconf *vfsconf; /* head of list of filesystem types */ 322 323 #endif 324 325 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 326 327 TAILQ_HEAD(mntlist, mount); /* struct mntlist */ 328 329 /* 330 * Operations supported on mounted file system. 331 */ 332 #ifdef __STDC__ 333 struct nameidata; 334 struct mbuf; 335 #endif 336 337 struct vfsops { 338 int (*vfs_mount) (struct mount *mp, char *path, caddr_t data, 339 struct nameidata *ndp, struct thread *td); 340 int (*vfs_start) (struct mount *mp, int flags, 341 struct thread *td); 342 int (*vfs_unmount) (struct mount *mp, int mntflags, 343 struct thread *td); 344 int (*vfs_root) (struct mount *mp, struct vnode **vpp); 345 int (*vfs_quotactl) (struct mount *mp, int cmds, uid_t uid, 346 caddr_t arg, struct thread *td); 347 int (*vfs_statfs) (struct mount *mp, struct statfs *sbp, 348 struct thread *td); 349 int (*vfs_sync) (struct mount *mp, int waitfor, 350 struct thread *td); 351 int (*vfs_vget) (struct mount *mp, ino_t ino, 352 struct vnode **vpp); 353 int (*vfs_fhtovp) (struct mount *mp, struct fid *fhp, 354 struct vnode **vpp); 355 int (*vfs_checkexp) (struct mount *mp, struct sockaddr *nam, 356 int *extflagsp, struct ucred **credanonp); 357 int (*vfs_vptofh) (struct vnode *vp, struct fid *fhp); 358 int (*vfs_init) (struct vfsconf *); 359 int (*vfs_uninit) (struct vfsconf *); 360 int (*vfs_extattrctl) (struct mount *mp, int cmd, 361 const char *attrname, caddr_t arg, 362 struct thread *td); 363 }; 364 365 #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \ 366 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P) 367 #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) 368 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) 369 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) 370 #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) 371 #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) 372 #define VFS_SYNC(MP, WAIT, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, P) 373 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP) 374 #define VFS_FHTOVP(MP, FIDP, VPP) \ 375 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) 376 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) 377 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \ 378 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED) 379 #define VFS_EXTATTRCTL(MP, C, N, A, P) \ 380 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, P) 381 382 #endif 383 384 #ifdef _KERNEL 385 386 #include <sys/module.h> 387 388 #define VFS_SET(vfsops, fsname, flags) \ 389 static struct vfsconf fsname ## _vfsconf = { \ 390 &vfsops, \ 391 #fsname, \ 392 -1, \ 393 0, \ 394 flags \ 395 }; \ 396 static moduledata_t fsname ## _mod = { \ 397 #fsname, \ 398 vfs_modevent, \ 399 & fsname ## _vfsconf \ 400 }; \ 401 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE) 402 403 #endif 404 405 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 406 407 #include <net/radix.h> 408 409 #define AF_MAX 33 /* XXX */ 410 411 /* 412 * Network address lookup element 413 */ 414 struct netcred { 415 struct radix_node netc_rnodes[2]; 416 int netc_exflags; 417 struct ucred netc_anon; 418 }; 419 420 /* 421 * Network export information 422 */ 423 struct netexport { 424 struct netcred ne_defexported; /* Default export */ 425 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ 426 }; 427 428 #endif 429 430 #ifdef _KERNEL 431 432 extern char *mountrootfsname; 433 434 /* 435 * exported vnode operations 436 */ 437 int dounmount (struct mount *, int, struct thread *); 438 int vfs_setpublicfs /* set publicly exported fs */ 439 (struct mount *, struct netexport *, struct export_args *); 440 int vfs_lock (struct mount *); /* lock a vfs */ 441 void vfs_msync (struct mount *, int); 442 void vfs_unlock (struct mount *); /* unlock a vfs */ 443 int vfs_busy (struct mount *, int, struct lwkt_token *, struct thread *); 444 int vfs_export /* process mount export info */ 445 (struct mount *, struct netexport *, struct export_args *); 446 struct netcred *vfs_export_lookup /* lookup host in fs export list */ 447 (struct mount *, struct netexport *, struct sockaddr *); 448 int vfs_allocate_syncvnode (struct mount *); 449 void vfs_getnewfsid (struct mount *); 450 dev_t vfs_getrootfsid (struct mount *); 451 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */ 452 int vfs_modevent (module_t, int, void *); 453 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */ 454 int vfs_rootmountalloc (char *, char *, struct mount **); 455 void vfs_unbusy (struct mount *, struct thread *); 456 void vfs_unmountall (void); 457 int vfs_register (struct vfsconf *); 458 int vfs_unregister (struct vfsconf *); 459 extern struct mntlist mountlist; /* mounted filesystem list */ 460 extern struct lwkt_token mountlist_token; 461 extern struct nfs_public nfs_pub; 462 463 /* 464 * Declarations for these vfs default operations are located in 465 * kern/vfs_default.c, they should be used instead of making "dummy" 466 * functions or casting entries in the VFS op table to "enopnotsupp()". 467 */ 468 int vfs_stdmount (struct mount *mp, char *path, caddr_t data, 469 struct nameidata *ndp, struct thread *p); 470 int vfs_stdstart (struct mount *mp, int flags, struct thread *p); 471 int vfs_stdunmount (struct mount *mp, int mntflags, struct thread *p); 472 int vfs_stdroot (struct mount *mp, struct vnode **vpp); 473 int vfs_stdquotactl (struct mount *mp, int cmds, uid_t uid, 474 caddr_t arg, struct thread *p); 475 int vfs_stdstatfs (struct mount *mp, struct statfs *sbp, struct thread *p); 476 int vfs_stdsync (struct mount *mp, int waitfor, struct thread *td); 477 int vfs_stdvget (struct mount *mp, ino_t ino, struct vnode **vpp); 478 int vfs_stdfhtovp (struct mount *mp, struct fid *fhp, struct vnode **vpp); 479 int vfs_stdcheckexp (struct mount *mp, struct sockaddr *nam, 480 int *extflagsp, struct ucred **credanonp); 481 int vfs_stdvptofh (struct vnode *vp, struct fid *fhp); 482 int vfs_stdinit (struct vfsconf *); 483 int vfs_stduninit (struct vfsconf *); 484 int vfs_stdextattrctl (struct mount *mp, int cmd, const char *attrname, 485 caddr_t arg, struct thread *p); 486 487 #else /* !_KERNEL */ 488 489 #include <sys/cdefs.h> 490 491 __BEGIN_DECLS 492 int fstatfs (int, struct statfs *); 493 int getfh (const char *, fhandle_t *); 494 int getfsstat (struct statfs *, long, int); 495 int getmntinfo (struct statfs **, int); 496 int mount (const char *, const char *, int, void *); 497 int statfs (const char *, struct statfs *); 498 int unmount (const char *, int); 499 int fhopen (const struct fhandle *, int); 500 int fhstat (const struct fhandle *, struct stat *); 501 int fhstatfs (const struct fhandle *, struct statfs *); 502 503 /* C library stuff */ 504 void endvfsent (void); 505 struct ovfsconf *getvfsbyname (const char *); 506 struct ovfsconf *getvfsbytype (int); 507 struct ovfsconf *getvfsent (void); 508 #define getvfsbyname new_getvfsbyname 509 int new_getvfsbyname (const char *, struct vfsconf *); 510 void setvfsent (int); 511 int vfsisloadable (const char *); 512 int vfsload (const char *); 513 __END_DECLS 514 515 #endif /* _KERNEL */ 516 517 #endif /* !_SYS_MOUNT_H_ */ 518 519