Changed comment to match code.
[dragonfly.git] / sys / sys / mount.h
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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 $
fad57d0e 35 * $DragonFly: src/sys/sys/mount.h,v 1.14 2004/11/12 00:09:27 dillon Exp $
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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
dadab5e9 54struct thread;
0961aa92 55struct vop_ops;
dadab5e9 56
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57typedef 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
65struct 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 */
984263bc 76#define MNAMELEN 80 /* length of buffer for returned name */
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77
78struct 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
ec12abe0 103#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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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).
41a01a4d 115 *
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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 *
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123 * NOTE: Any vnode marked VPLACEMARKER is a placemarker and should ALWAYS BE
124 * SKIPPED. NO OTHER FIELDS IN SUCH VNODES ARE VALID.
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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.
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129 */
130TAILQ_HEAD(vnodelst, vnode);
131
132struct 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 */
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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 */
21739618 152 struct namecache *mnt_ncp; /* NCF_MNTPT ncp */
984263bc 153};
ec12abe0 154#endif /* _KERNEL || _KERNEL_STRUCTURES */
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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 */
264struct fhandle {
265 fsid_t fh_fsid; /* File system id of mount point */
266 struct fid fh_fid; /* File sys specific id */
267};
268typedef struct fhandle fhandle_t;
269
270/*
271 * Export arguments for local filesystem mount calls.
272 */
273struct 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 */
288struct 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 */
300struct 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
309struct 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
331MALLOC_DECLARE(M_MOUNT);
332#endif
333extern int maxvfsconf; /* highest defined filesystem type */
334extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
335extern struct vfsconf *vfsconf; /* head of list of filesystem types */
336
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337#endif
338
339#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
340
341TAILQ_HEAD(mntlist, mount); /* struct mntlist */
342
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343/*
344 * Operations supported on mounted file system.
345 */
346#ifdef __STDC__
21739618 347struct nlookupdata;
fad57d0e 348struct nlookupdata;
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349struct mbuf;
350#endif
351
352struct vfsops {
b153f746 353 int (*vfs_mount) (struct mount *mp, char *path, caddr_t data,
21739618 354 struct thread *td);
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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,
984263bc 376 const char *attrname, caddr_t arg,
b153f746 377 struct thread *td);
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378};
379
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380#define VFS_MOUNT(MP, PATH, DATA, P) \
381 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, P)
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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)
3b568787 387#define VFS_SYNC(MP, WAIT, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, P)
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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
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397#endif
398
399#ifdef _KERNEL
400
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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, \
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409 flags, \
410 NULL \
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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
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419#endif
420
421#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
422
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423#include <net/radix.h>
424
425#define AF_MAX 33 /* XXX */
426
427/*
428 * Network address lookup element
429 */
430struct 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 */
439struct netexport {
440 struct netcred ne_defexported; /* Default export */
441 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
442};
443
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444#endif
445
446#ifdef _KERNEL
447
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448extern char *mountrootfsname;
449
450/*
451 * exported vnode operations
452 */
b153f746 453int dounmount (struct mount *, int, struct thread *);
984263bc 454int vfs_setpublicfs /* set publicly exported fs */
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455 (struct mount *, struct netexport *, struct export_args *);
456int vfs_lock (struct mount *); /* lock a vfs */
457void vfs_msync (struct mount *, int);
458void vfs_unlock (struct mount *); /* unlock a vfs */
41a01a4d 459int vfs_busy (struct mount *, int, struct lwkt_tokref *, struct thread *);
6bdbb368 460void vfs_bufstats(void);
984263bc 461int vfs_export /* process mount export info */
b153f746 462 (struct mount *, struct netexport *, struct export_args *);
984263bc 463struct netcred *vfs_export_lookup /* lookup host in fs export list */
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464 (struct mount *, struct netexport *, struct sockaddr *);
465int vfs_allocate_syncvnode (struct mount *);
466void vfs_getnewfsid (struct mount *);
467dev_t vfs_getrootfsid (struct mount *);
468struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
469int vfs_modevent (module_t, int, void *);
470int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
471int vfs_rootmountalloc (char *, char *, struct mount **);
472void vfs_unbusy (struct mount *, struct thread *);
473void vfs_unmountall (void);
474int vfs_register (struct vfsconf *);
475int vfs_unregister (struct vfsconf *);
ec12abe0 476extern struct mntlist mountlist; /* mounted filesystem list */
8a8d5d85 477extern struct lwkt_token mountlist_token;
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478extern 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 */
b153f746 485int vfs_stdmount (struct mount *mp, char *path, caddr_t data,
fad57d0e 486 struct nlookupdata *ndp, struct thread *p);
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487int vfs_stdstart (struct mount *mp, int flags, struct thread *p);
488int vfs_stdunmount (struct mount *mp, int mntflags, struct thread *p);
489int vfs_stdroot (struct mount *mp, struct vnode **vpp);
490int vfs_stdquotactl (struct mount *mp, int cmds, uid_t uid,
491 caddr_t arg, struct thread *p);
492int vfs_stdstatfs (struct mount *mp, struct statfs *sbp, struct thread *p);
493int vfs_stdsync (struct mount *mp, int waitfor, struct thread *td);
494int vfs_stdvget (struct mount *mp, ino_t ino, struct vnode **vpp);
495int vfs_stdfhtovp (struct mount *mp, struct fid *fhp, struct vnode **vpp);
496int vfs_stdcheckexp (struct mount *mp, struct sockaddr *nam,
497 int *extflagsp, struct ucred **credanonp);
498int vfs_stdvptofh (struct vnode *vp, struct fid *fhp);
499int vfs_stdinit (struct vfsconf *);
500int vfs_stduninit (struct vfsconf *);
501int vfs_stdextattrctl (struct mount *mp, int cmd, const char *attrname,
502 caddr_t arg, struct thread *p);
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503
504#else /* !_KERNEL */
505
506#include <sys/cdefs.h>
507
508__BEGIN_DECLS
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509int fstatfs (int, struct statfs *);
510int getfh (const char *, fhandle_t *);
511int getfsstat (struct statfs *, long, int);
512int getmntinfo (struct statfs **, int);
513int mount (const char *, const char *, int, void *);
514int statfs (const char *, struct statfs *);
515int unmount (const char *, int);
516int fhopen (const struct fhandle *, int);
517int fhstat (const struct fhandle *, struct stat *);
518int fhstatfs (const struct fhandle *, struct statfs *);
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519
520/* C library stuff */
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521void endvfsent (void);
522struct ovfsconf *getvfsbyname (const char *);
523struct ovfsconf *getvfsbytype (int);
524struct ovfsconf *getvfsent (void);
984263bc 525#define getvfsbyname new_getvfsbyname
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526int new_getvfsbyname (const char *, struct vfsconf *);
527void setvfsent (int);
528int vfsisloadable (const char *);
529int vfsload (const char *);
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530__END_DECLS
531
532#endif /* _KERNEL */
533
534#endif /* !_SYS_MOUNT_H_ */
ec12abe0 535