FreeBSD/Linux Kernel Cross Reference
sys/sys/mount.h
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 8.13 (Berkeley) 3/27/94
34 * $FreeBSD: src/sys/sys/mount.h,v 1.34.2.5 1999/09/05 08:22:37 peter Exp $
35 */
36
37 #ifndef _SYS_MOUNT_H_
38 #define _SYS_MOUNT_H_
39
40 #ifndef KERNEL
41 #include <sys/ucred.h>
42 #endif
43 #include <sys/queue.h>
44
45 typedef struct fsid { long val[2]; } fsid_t; /* file system id type */
46
47 /*
48 * File identifier.
49 * These are unique per filesystem on a single machine.
50 */
51 #define MAXFIDSZ 16
52
53 struct fid {
54 u_short fid_len; /* length of data in bytes */
55 u_short fid_reserved; /* force longword alignment */
56 char fid_data[MAXFIDSZ]; /* data (variable length) */
57 };
58
59 /*
60 * file system statistics
61 */
62
63 #define MNAMELEN 90 /* length of buffer for returned name */
64
65 struct statfs {
66 long f_spare2; /* placeholder */
67 long f_bsize; /* fundamental file system block size */
68 long f_iosize; /* optimal transfer block size */
69 long f_blocks; /* total data blocks in file system */
70 long f_bfree; /* free blocks in fs */
71 long f_bavail; /* free blocks avail to non-superuser */
72 long f_files; /* total file nodes in file system */
73 long f_ffree; /* free file nodes in fs */
74 fsid_t f_fsid; /* file system id */
75 uid_t f_owner; /* user that mounted the filesystem */
76 int f_type; /* type of filesystem (see below) */
77 int f_flags; /* copy of mount flags */
78 long f_spare[6]; /* spare for later */
79 char f_mntonname[MNAMELEN]; /* directory on which mounted */
80 char f_mntfromname[MNAMELEN];/* mounted filesystem */
81 };
82
83 /*
84 * File system types.
85 */
86 #define MOUNT_NONE 0
87 #define MOUNT_UFS 1 /* Fast Filesystem */
88 #define MOUNT_NFS 2 /* Sun-compatible Network Filesystem */
89 #define MOUNT_MFS 3 /* Memory-based Filesystem */
90 #define MOUNT_MSDOS 4 /* MS/DOS Filesystem */
91 #define MOUNT_LFS 5 /* Log-based Filesystem */
92 #define MOUNT_LOFS 6 /* Loopback Filesystem */
93 #define MOUNT_FDESC 7 /* File Descriptor Filesystem */
94 #define MOUNT_PORTAL 8 /* Portal Filesystem */
95 #define MOUNT_NULL 9 /* Minimal Filesystem Layer */
96 #define MOUNT_UMAP 10 /* User/Group Identifier Remapping Filesystem */
97 #define MOUNT_KERNFS 11 /* Kernel Information Filesystem */
98 #define MOUNT_PROCFS 12 /* /proc Filesystem */
99 #define MOUNT_AFS 13 /* Andrew Filesystem */
100 #define MOUNT_CD9660 14 /* ISO9660 (aka CDROM) Filesystem */
101 #define MOUNT_UNION 15 /* Union (translucent) Filesystem */
102 #define MOUNT_DEVFS 16 /* existing device Filesystem */
103 #define MOUNT_EXT2FS 17 /* Linux EXT2FS */
104 #define MOUNT_TFS 18 /* Netcon Novell filesystem */
105 #define MOUNT_CFS 19 /* Coda filesystem */
106 #define MOUNT_MAXTYPE 19
107
108 #define INITMOUNTNAMES { \
109 "none", /* 0 MOUNT_NONE */ \
110 "ufs", /* 1 MOUNT_UFS */ \
111 "nfs", /* 2 MOUNT_NFS */ \
112 "mfs", /* 3 MOUNT_MFS */ \
113 "msdos", /* 4 MOUNT_MSDOS */ \
114 "lfs", /* 5 MOUNT_LFS */ \
115 "lofs", /* 6 MOUNT_LOFS */ \
116 "fdesc", /* 7 MOUNT_FDESC */ \
117 "portal", /* 8 MOUNT_PORTAL */ \
118 "null", /* 9 MOUNT_NULL */ \
119 "umap", /* 10 MOUNT_UMAP */ \
120 "kernfs", /* 11 MOUNT_KERNFS */ \
121 "procfs", /* 12 MOUNT_PROCFS */ \
122 "afs", /* 13 MOUNT_AFS */ \
123 "cd9660", /* 14 MOUNT_CD9660 */ \
124 "union", /* 15 MOUNT_UNION */ \
125 "devfs", /* 16 MOUNT_DEVFS */ \
126 "ext2fs", /* 17 MOUNT_EXT2FS */ \
127 "tfs", /* 18 MOUNT_TFS */ \
128 "cfs", /* 19 MOUNT_CFS */ \
129 0, /* 20 MOUNT_SPARE */ \
130 }
131
132 /*
133 * Structure per mounted file system. Each mounted file system has an
134 * array of operations and an instance record. The file systems are
135 * put on a doubly linked list.
136 */
137 LIST_HEAD(vnodelst, vnode);
138
139 struct mount {
140 CIRCLEQ_ENTRY(mount) mnt_list; /* mount list */
141 struct vfsops *mnt_op; /* operations on fs */
142 struct vfsconf *mnt_vfc; /* configuration info */
143 struct vnode *mnt_vnodecovered; /* vnode we mounted on */
144 struct vnodelst mnt_vnodelist; /* list of vnodes this mount */
145 int mnt_flag; /* flags */
146 int mnt_maxsymlinklen; /* max size of short symlink */
147 struct statfs mnt_stat; /* cache of filesystem stats */
148 qaddr_t mnt_data; /* private data */
149 /* struct vfsconf *mnt_vfc; */ /* configuration info */
150 time_t mnt_time; /* last time written*/
151 };
152
153 /*
154 * Mount flags.
155 *
156 * Unmount uses MNT_FORCE flag.
157 */
158 #define MNT_RDONLY 0x00000001 /* read only filesystem */
159 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
160 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
161 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
162 #define MNT_NODEV 0x00000010 /* don't interpret special files */
163 #define MNT_UNION 0x00000020 /* union with underlying filesystem */
164 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */
165 #define MNT_NOATIME 0x10000000 /* Disable update of file access times */
166
167 /*
168 * exported mount flags.
169 */
170 #define MNT_EXRDONLY 0x00000080 /* exported read only */
171 #define MNT_EXPORTED 0x00000100 /* file system is exported */
172 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
173 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
174 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
175
176 /*
177 * Flags set by internal operations.
178 */
179 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
180 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
181 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
182 #define MNT_USER 0x00008000 /* mounted by a user */
183
184 /*
185 * Mask of flags that are visible to statfs()
186 */
187 #define MNT_VISFLAGMASK (MNT_RDONLY|MNT_SYNCHRONOUS|MNT_NOEXEC|MNT_NOSUID| \
188 MNT_NODEV|MNT_UNION|MNT_ASYNC|MNT_EXRDONLY|MNT_EXPORTED| \
189 MNT_DEFEXPORTED|MNT_EXPORTANON|MNT_EXKERB|MNT_LOCAL| \
190 MNT_QUOTA|MNT_ROOTFS|MNT_USER|MNT_NOATIME)
191
192 /*
193 * filesystem control flags.
194 *
195 * MNT_MLOCK lock the mount entry so that name lookup cannot proceed
196 * past the mount point. This keeps the subtree stable during mounts
197 * and unmounts.
198 */
199 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
200 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */
201 #define MNT_RELOAD 0x00040000 /* reload filesystem data */
202 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
203 #define MNT_MLOCK 0x00100000 /* lock so that subtree is stable */
204 #define MNT_MWAIT 0x00200000 /* someone is waiting for lock */
205 #define MNT_MPBUSY 0x00400000 /* scan of mount point in progress */
206 #define MNT_MPWANT 0x00800000 /* waiting for mount point */
207 #define MNT_UNMOUNT 0x01000000 /* unmount in progress */
208 #define MNT_WANTRDWR 0x02000000 /* want upgrade to read/write */
209
210 /*
211 * used to get configured filesystems information
212 */
213 #define VFS_MAXNAMELEN 32
214 struct vfsconf {
215 void *vfc_vfsops;
216 char vfc_name[VFS_MAXNAMELEN];
217 int vfc_index;
218 int vfc_refcount;
219 int vfc_flags;
220 };
221
222 /*
223 * NB: these flags refer to IMPLEMENTATION properties, not properties of
224 * any actual mounts; i.e., it does not make sense to change the flags.
225 */
226 #define VFCF_STATIC 0x00000001 /* statically compiled into kernel */
227 #define VFCF_NETWORK 0x00000002 /* may get data over the network */
228 #define VFCF_READONLY 0x00000004 /* writes are not implemented */
229 #define VFCF_SYNTHETIC 0x00000008 /* data does not represent real files */
230 #define VFCF_LOOPBACK 0x00000010 /* aliases some other mounted FS */
231 #define VFCF_UNICODE 0x00000020 /* stores file names as Unicode*/
232
233 /*
234 * Operations supported on mounted file system.
235 */
236 #ifdef KERNEL
237
238 extern int doforce; /* Flag to permit forcible unmounting. */
239 extern struct vfsconf void_vfsconf;
240 extern struct vfsconf *vfsconf[];
241
242 #ifdef __STDC__
243 struct nameidata;
244 struct mbuf;
245 #endif
246
247 struct vfsops {
248 int (*vfs_mount) __P((struct mount *mp, char *path, caddr_t data,
249 struct nameidata *ndp, struct proc *p));
250 int (*vfs_start) __P((struct mount *mp, int flags,
251 struct proc *p));
252 int (*vfs_unmount) __P((struct mount *mp, int mntflags,
253 struct proc *p));
254 int (*vfs_root) __P((struct mount *mp, struct vnode **vpp));
255 int (*vfs_quotactl) __P((struct mount *mp, int cmds, uid_t uid,
256 caddr_t arg, struct proc *p));
257 int (*vfs_statfs) __P((struct mount *mp, struct statfs *sbp,
258 struct proc *p));
259 int (*vfs_sync) __P((struct mount *mp, int waitfor,
260 struct ucred *cred, struct proc *p));
261 int (*vfs_vget) __P((struct mount *mp, ino_t ino,
262 struct vnode **vpp));
263 int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp,
264 struct mbuf *nam, struct vnode **vpp,
265 int *exflagsp, struct ucred **credanonp));
266 int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp));
267 int (*vfs_init) __P((void));
268 };
269
270 #define VFS_MOUNT(MP, PATH, DATA, NDP, P) \
271 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P)
272 #define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P)
273 #define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
274 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
275 #define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
276 #define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P)
277 #define VFS_SYNC(MP, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P)
278 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
279 #define VFS_FHTOVP(MP, FIDP, NAM, VPP, EXFLG, CRED) \
280 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, NAM, VPP, EXFLG, CRED)
281 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
282
283 #ifdef VFS_LKM
284 #include <sys/conf.h>
285 #include <sys/exec.h>
286 #include <sys/sysent.h>
287 #include <sys/lkm.h>
288
289 #define VFS_SET(vfsops, fsname, index, flags) \
290 static struct vfsconf _fs_vfsconf = { \
291 &vfsops, \
292 #fsname, \
293 index, \
294 0, \
295 flags \
296 }; \
297 extern struct linker_set MODVNOPS; \
298 MOD_VFS(#fsname,index,&MODVNOPS,&_fs_vfsconf); \
299 int \
300 fsname ## _mod(struct lkm_table *lkmtp, int cmd, int ver) { \
301 DISPATCH(lkmtp, cmd, ver, lkm_nullcmd, lkm_nullcmd, lkm_nullcmd); }
302 #else
303
304 #define VFS_SET(vfsops, fsname, index, flags) \
305 static struct vfsconf _fs_vfsconf = { \
306 &vfsops, \
307 #fsname, \
308 index, \
309 0, \
310 flags | VFCF_STATIC \
311 }; \
312 DATA_SET(vfs_set,_fs_vfsconf)
313 #endif /* VFS_LKM */
314
315 #endif /* KERNEL */
316
317 /*
318 * Flags for various system call interfaces.
319 *
320 * waitfor flags to vfs_sync() and getfsstat()
321 */
322 #define MNT_WAIT 1
323 #define MNT_NOWAIT 2
324
325 /*
326 * Generic file handle
327 */
328 struct fhandle {
329 fsid_t fh_fsid; /* File system id of mount point */
330 struct fid fh_fid; /* File sys specific id */
331 };
332 typedef struct fhandle fhandle_t;
333
334 #ifdef KERNEL
335 #include <net/radix.h>
336 #include <sys/socket.h> /* XXX for AF_MAX */
337
338 /*
339 * Network address lookup element
340 */
341 struct netcred {
342 struct radix_node netc_rnodes[2];
343 int netc_exflags;
344 struct ucred netc_anon;
345 };
346
347 /*
348 * Network export information
349 */
350 struct netexport {
351 struct netcred ne_defexported; /* Default export */
352 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
353 };
354 #endif /* KERNEL */
355
356 /*
357 * Export arguments for local filesystem mount calls.
358 */
359 struct export_args {
360 int ex_flags; /* export related flags */
361 uid_t ex_root; /* mapping for root uid */
362 struct ucred ex_anon; /* mapping for anonymous user */
363 struct sockaddr *ex_addr; /* net address to which exported */
364 int ex_addrlen; /* and the net address length */
365 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
366 int ex_masklen; /* and the smask length */
367 };
368
369 /*
370 * Arguments to mount UFS-based filesystems
371 */
372 struct ufs_args {
373 char *fspec; /* block special device to mount */
374 struct export_args export; /* network export information */
375 };
376
377 #ifdef MFS
378 /*
379 * Arguments to mount MFS
380 */
381 struct mfs_args {
382 char *fspec; /* name to export for statfs */
383 struct export_args export; /* if exported MFSes are supported */
384 caddr_t base; /* base of file system in memory */
385 u_long size; /* size of file system */
386 };
387 #endif /* MFS */
388
389 #ifdef MSDOSFS
390 /*
391 * Arguments to mount MSDOS filesystems.
392 */
393 struct msdosfs_args {
394 char *fspec; /* blocks special holding the fs to mount */
395 struct export_args export; /* network export information */
396 uid_t uid; /* uid that owns msdosfs files */
397 gid_t gid; /* gid that owns msdosfs files */
398 mode_t mask; /* mask to be applied for msdosfs perms */
399 int flags; /* see below */
400 int magic; /* version number */
401 u_int16_t u2w[128]; /* Local->Unicode table */
402 u_int8_t ul[128]; /* Local upper->lower table */
403 u_int8_t lu[128]; /* Local lower->upper table */
404 u_int8_t d2u[128]; /* DOS->local table */
405 u_int8_t u2d[128]; /* Local->DOS table */
406 };
407 #endif
408
409 #ifdef CD9660
410 /*
411 * Arguments to mount ISO 9660 filesystems.
412 */
413 struct iso_args {
414 char *fspec; /* block special device to mount */
415 struct export_args export; /* network export info */
416 int flags; /* mounting flags, see below */
417 int ssector; /* starting sector */
418
419 };
420 #define ISOFSMNT_NORRIP 0x00000001 /* disable Rock Ridge Ext.*/
421 #define ISOFSMNT_GENS 0x00000002 /* enable generation numbers */
422 #define ISOFSMNT_EXTATT 0x00000004 /* enable extended attributes */
423 #endif /* CD9660 */
424
425 #ifdef NFS
426 /*
427 * Arguments to mount NFS
428 */
429 struct nfs_args {
430 struct sockaddr *addr; /* file server address */
431 int addrlen; /* length of address */
432 int sotype; /* Socket type */
433 int proto; /* and Protocol */
434 u_char *fh; /* File handle to be mounted */
435 int fhsize; /* Size, in bytes, of fh */
436 int flags; /* flags */
437 int wsize; /* write size in bytes */
438 int rsize; /* read size in bytes */
439 int readdirsize; /* readdir size in bytes */
440 int timeo; /* initial timeout in .1 secs */
441 int retrans; /* times to retry send */
442 int maxgrouplist; /* Max. size of group list */
443 int readahead; /* # of blocks to readahead */
444 int leaseterm; /* Term (sec) of lease */
445 int deadthresh; /* Retrans threshold */
446 char *hostname; /* server's name */
447 };
448
449 /*
450 * NFS mount option flags
451 */
452 #define NFSMNT_SOFT 0x00000001 /* soft mount (hard is default) */
453 #define NFSMNT_WSIZE 0x00000002 /* set write size */
454 #define NFSMNT_RSIZE 0x00000004 /* set read size */
455 #define NFSMNT_TIMEO 0x00000008 /* set initial timeout */
456 #define NFSMNT_RETRANS 0x00000010 /* set number of request retrys */
457 #define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */
458 #define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */
459 #define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */
460 #define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */
461 #define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */
462 #define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */
463 #define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */
464 #define NFSMNT_LEASETERM 0x00001000 /* set lease term (nqnfs) */
465 #define NFSMNT_READAHEAD 0x00002000 /* set read ahead */
466 #define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */
467 #define NFSMNT_RESVPORT 0x00008000 /* Allocate a reserved port */
468 #define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */
469 #define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */
470 #define NFSMNT_INTERNAL 0xfffc0000 /* Bits set internally */
471 #define NFSMNT_HASWRITEVERF 0x00040000 /* Has write verifier for V3 */
472 #define NFSMNT_GOTPATHCONF 0x00080000 /* Got the V3 pathconf info */
473 #define NFSMNT_GOTFSINFO 0x00100000 /* Got the V3 fsinfo */
474 #define NFSMNT_MNTD 0x00200000 /* Mnt server for mnt point */
475 #define NFSMNT_DISMINPROG 0x00400000 /* Dismount in progress */
476 #define NFSMNT_DISMNT 0x00800000 /* Dismounted */
477 #define NFSMNT_SNDLOCK 0x01000000 /* Send socket lock */
478 #define NFSMNT_WANTSND 0x02000000 /* Want above */
479 #define NFSMNT_RCVLOCK 0x04000000 /* Rcv socket lock */
480 #define NFSMNT_WANTRCV 0x08000000 /* Want above */
481 #define NFSMNT_WAITAUTH 0x10000000 /* Wait for authentication */
482 #define NFSMNT_HASAUTH 0x20000000 /* Has authenticator */
483 #define NFSMNT_WANTAUTH 0x40000000 /* Wants an authenticator */
484 #define NFSMNT_AUTHERR 0x80000000 /* Authentication error */
485 #endif /* NFS */
486
487 #ifdef KERNEL
488 extern int (*mountroot) __P((void *));
489 extern struct vfsops *mountrootvfsops;
490
491 /*
492 * exported vnode operations
493 */
494 int dounmount __P((struct mount *, int, struct proc *));
495 struct mount *getvfs __P((fsid_t *)); /* return vfs given fsid */
496 void getnewfsid __P((struct mount *, int));
497 int vflush __P((struct mount *, struct vnode *, int));
498 int vfs_export /* process mount export info */
499 __P((struct mount *, struct netexport *, struct export_args *));
500 struct netcred *vfs_export_lookup /* lookup host in fs export list */
501 __P((struct mount *, struct netexport *, struct mbuf *));
502 int vfs_lock __P((struct mount *)); /* lock a vfs */
503 int vfs_mountedon __P((struct vnode *)); /* is a vfs mounted on vp */
504 int vfs_mountroot __P((void *)); /* XXX goes away? */
505 void vfs_msync __P((struct mount *, int));
506 void vfs_unlock __P((struct mount *)); /* unlock a vfs */
507 void vfs_unmountall __P((void));
508 int vfs_busy __P((struct mount *)); /* mark a vfs busy */
509 void vfs_unbusy __P((struct mount *)); /* mark a vfs not busy */
510 extern CIRCLEQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */
511 extern struct vfsops *vfssw[]; /* filesystem type table */
512
513 #else /* KERNEL */
514
515 #include <sys/cdefs.h>
516
517 __BEGIN_DECLS
518 int fstatfs __P((int, struct statfs *));
519 int getfh __P((const char *, fhandle_t *));
520 int getfsstat __P((struct statfs *, long, int));
521 int getmntinfo __P((struct statfs **, int));
522 int mount __P((int, const char *, int, void *));
523 int statfs __P((const char *, struct statfs *));
524 int unmount __P((const char *, int));
525
526 /* C library stuff */
527 struct vfsconf *getvfsbyname __P((const char *));
528 struct vfsconf *getvfsbytype __P((int));
529 struct vfsconf *getvfsent __P((void));
530 void setvfsent __P((int));
531 void endvfsent __P((void));
532 int vfsisloadable __P((const char *));
533 int vfsload __P((const char *));
534 __END_DECLS
535
536 #endif /* KERNEL */
537
538 #endif /* !_SYS_MOUNT_H_ */
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