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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 $
28623bf9 35 * $DragonFly: src/sys/sys/mount.h,v 1.30 2006/10/27 04:56:33 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
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49#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
50#ifndef _SYS_QUEUE_H_
984263bc 51#include <sys/queue.h>
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52#endif
53#ifndef _SYS_LOCK_H_
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54#include <sys/lock.h>
55#endif
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56#ifndef _SYS_NAMECACHE_H_
57#include <sys/namecache.h>
58#endif
03d6a592 59#endif
984263bc 60
dadab5e9 61struct thread;
2281065e 62struct journal;
0961aa92 63struct vop_ops;
2281065e 64struct vop_mountctl_args;
dadab5e9 65
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66typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
67
68/*
69 * File identifier.
70 * These are unique per filesystem on a single machine.
71 */
72#define MAXFIDSZ 16
73
74struct fid {
75 u_short fid_len; /* length of data in bytes */
76 u_short fid_reserved; /* force longword alignment */
77 char fid_data[MAXFIDSZ]; /* data (variable length) */
78};
79
80/*
81 * file system statistics
82 */
83
84#define MFSNAMELEN 16 /* length of fs type name, including null */
984263bc 85#define MNAMELEN 80 /* length of buffer for returned name */
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86
87struct statfs {
88 long f_spare2; /* placeholder */
89 long f_bsize; /* fundamental file system block size */
90 long f_iosize; /* optimal transfer block size */
91 long f_blocks; /* total data blocks in file system */
92 long f_bfree; /* free blocks in fs */
93 long f_bavail; /* free blocks avail to non-superuser */
94 long f_files; /* total file nodes in file system */
95 long f_ffree; /* free file nodes in fs */
96 fsid_t f_fsid; /* file system id */
97 uid_t f_owner; /* user that mounted the filesystem */
98 int f_type; /* type of filesystem */
99 int f_flags; /* copy of mount exported flags */
100 long f_syncwrites; /* count of sync writes since mount */
101 long f_asyncwrites; /* count of async writes since mount */
102 char f_fstypename[MFSNAMELEN]; /* fs type name */
103 char f_mntonname[MNAMELEN]; /* directory on which mounted */
104 long f_syncreads; /* count of sync reads since mount */
105 long f_asyncreads; /* count of async reads since mount */
106 short f_spares1; /* unused spare */
107 char f_mntfromname[MNAMELEN];/* mounted filesystem */
108 short f_spares2; /* unused spare */
109 long f_spare[2]; /* unused spare */
110};
111
ec12abe0 112#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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113/*
114 * Structure per mounted file system. Each mounted file system has an
115 * array of operations and an instance record. The file systems are
116 * put on a doubly linked list.
117 *
118 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
119 * are linked into mnt_nvnodelist. At some point in the near future the
120 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
121 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
122 * list. Filesystem kld's syncing code should remain compatible since
123 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 124 *
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125 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
126 * only take namecache pointers will not be able to find their operations
127 * vector via namecache->nc_mount.
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128 */
129TAILQ_HEAD(vnodelst, vnode);
2281065e 130TAILQ_HEAD(journallst, journal);
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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 */
1d505369 136 void *mnt_unused01;
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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
150 /*
151 * ops vectors have a fixed stacking order. All primary calls run
152 * through mnt_vn_ops. This field is typically assigned to
153 * mnt_vn_norm_ops. If journaling has been enabled this field is
154 * usually assigned to mnt_vn_journal_ops.
155 */
156 struct vop_ops *mnt_vn_use_ops; /* current ops set */
157
158 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
159 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
160 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
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161 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
162 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
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163 struct nchandle mnt_ncmountpt; /* mount point */
164 struct nchandle mnt_ncmounton; /* mounted on */
165 int mnt_refs; /* nchandle references */
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166
167 struct journallst mnt_jlist; /* list of active journals */
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168 u_int8_t *mnt_jbitmap; /* streamid bitmap */
169 int16_t mnt_streamid; /* last streamid */
984263bc 170};
2281065e 171
ec12abe0 172#endif /* _KERNEL || _KERNEL_STRUCTURES */
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173
174/*
175 * User specifiable flags.
176 */
177#define MNT_RDONLY 0x00000001 /* read only filesystem */
178#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
179#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
180#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
181#define MNT_NODEV 0x00000010 /* don't interpret special files */
182#define MNT_UNION 0x00000020 /* union with underlying filesystem */
183#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
184#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
185#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
186#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
187#define MNT_NOATIME 0x10000000 /* disable update of file access time */
188#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
189#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
190
191/*
192 * NFS export related mount flags.
193 */
194#define MNT_EXRDONLY 0x00000080 /* exported read only */
195#define MNT_EXPORTED 0x00000100 /* file system is exported */
196#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
197#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
198#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
199#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
200
201/*
202 * Flags set by internal operations,
203 * but visible to the user.
204 * XXX some of these are not quite right.. (I've never seen the root flag set)
205 */
206#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
207#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
208#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
209#define MNT_USER 0x00008000 /* mounted by a user */
210#define MNT_IGNORE 0x00800000 /* do not show entry in df */
211
212/*
213 * Mask of flags that are visible to statfs()
214 * XXX I think that this could now become (~(MNT_CMDFLAGS))
215 * but the 'mount' program may need changing to handle this.
216 */
217#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
218 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
219 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
220 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
221 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
222 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
223 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
224 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC )
225/*
226 * External filesystem command modifier flags.
227 * Unmount can use the MNT_FORCE flag.
228 * XXX These are not STATES and really should be somewhere else.
229 */
230#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
231#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
232#define MNT_RELOAD 0x00040000 /* reload filesystem data */
233#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
234#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
235/*
236 * Internal filesystem control flags stored in mnt_kern_flag.
237 *
238 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
239 * past the mount point. This keeps the subtree stable during mounts
240 * and unmounts.
241 *
242 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
243 * dounmount() is still waiting to lock the mountpoint. This allows
244 * the filesystem to cancel operations that might otherwise deadlock
245 * with the unmount attempt (used by NFS).
246 */
247#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
28623bf9 248#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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249#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
250#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
251#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 252#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
984263bc 253
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254/*
255 * mountlist_*() defines
256 */
257#define MNTSCAN_FORWARD 0x0001
258#define MNTSCAN_REVERSE 0x0002
259#define MNTSCAN_NOBUSY 0x0004
260
261#define MNTINS_FIRST 0x0001
262#define MNTINS_LAST 0x0002
263
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264/*
265 * Sysctl CTL_VFS definitions.
266 *
267 * Second level identifier specifies which filesystem. Second level
268 * identifier VFS_VFSCONF returns information about all filesystems.
269 * Second level identifier VFS_GENERIC is non-terminal.
270 */
271#define VFS_VFSCONF 0 /* get configured filesystems */
272#define VFS_GENERIC 0 /* generic filesystem information */
273/*
274 * Third level identifiers for VFS_GENERIC are given below; third
275 * level identifiers for specific filesystems are given in their
276 * mount specific header files.
277 */
278#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
279#define VFS_CONF 2 /* struct: vfsconf for filesystem given
280 as next argument */
281
282/*
283 * Flags for various system call interfaces.
284 *
285 * waitfor flags to vfs_sync() and getfsstat()
286 */
287#define MNT_WAIT 1 /* synchronously wait for I/O to complete */
288#define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
6bae6177 289#define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
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290
291/*
292 * Generic file handle
293 */
294struct fhandle {
295 fsid_t fh_fsid; /* File system id of mount point */
296 struct fid fh_fid; /* File sys specific id */
297};
298typedef struct fhandle fhandle_t;
299
300/*
301 * Export arguments for local filesystem mount calls.
302 */
303struct export_args {
304 int ex_flags; /* export related flags */
305 uid_t ex_root; /* mapping for root uid */
306 struct ucred ex_anon; /* mapping for anonymous user */
307 struct sockaddr *ex_addr; /* net address to which exported */
308 int ex_addrlen; /* and the net address length */
309 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
310 int ex_masklen; /* and the smask length */
311 char *ex_indexfile; /* index file for WebNFS URLs */
312};
313
314/*
315 * Structure holding information for a publicly exported filesystem
316 * (WebNFS). Currently the specs allow just for one such filesystem.
317 */
318struct nfs_public {
319 int np_valid; /* Do we hold valid information */
320 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
321 struct mount *np_mount; /* Mountpoint of exported fs */
322 char *np_index; /* Index file */
323};
324
325/*
326 * Filesystem configuration information. One of these exists for each
327 * type of filesystem supported by the kernel. These are searched at
328 * mount time to identify the requested filesystem.
329 */
330struct vfsconf {
331 struct vfsops *vfc_vfsops; /* filesystem operations vector */
332 char vfc_name[MFSNAMELEN]; /* filesystem type name */
333 int vfc_typenum; /* historic filesystem type number */
334 int vfc_refcount; /* number mounted of this type */
335 int vfc_flags; /* permanent flags */
336 struct vfsconf *vfc_next; /* next in list */
337};
338
339struct ovfsconf {
340 void *vfc_vfsops;
341 char vfc_name[32];
342 int vfc_index;
343 int vfc_refcount;
344 int vfc_flags;
345};
346
347/*
348 * NB: these flags refer to IMPLEMENTATION properties, not properties of
349 * any actual mounts; i.e., it does not make sense to change the flags.
350 */
351#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
352#define VFCF_NETWORK 0x00020000 /* may get data over the network */
353#define VFCF_READONLY 0x00040000 /* writes are not implemented */
354#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
355#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
356#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
357
358#ifdef _KERNEL
359
360#ifdef MALLOC_DECLARE
361MALLOC_DECLARE(M_MOUNT);
362#endif
363extern int maxvfsconf; /* highest defined filesystem type */
364extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
365extern struct vfsconf *vfsconf; /* head of list of filesystem types */
366
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367#endif
368
369#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
370
371TAILQ_HEAD(mntlist, mount); /* struct mntlist */
372
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373/*
374 * Operations supported on mounted file system.
375 */
376#ifdef __STDC__
21739618 377struct nlookupdata;
fad57d0e 378struct nlookupdata;
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379struct mbuf;
380#endif
381
43c45e8f 382typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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383 struct ucred *cred);
384typedef int vfs_start_t(struct mount *mp, int flags);
385typedef int vfs_unmount_t(struct mount *mp, int mntflags);
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386typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
387typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 388 struct ucred *cred);
43c45e8f 389typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 390 struct ucred *cred);
87de5057 391typedef int vfs_sync_t(struct mount *mp, int waitfor);
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392typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp);
393typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp,
b153f746 394 struct vnode **vpp);
43c45e8f 395typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 396 int *extflagsp, struct ucred **credanonp);
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397typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
398typedef int vfs_init_t(struct vfsconf *);
399typedef int vfs_uninit_t(struct vfsconf *);
400typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname,
acde96db 401 caddr_t arg, struct ucred *cred);
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402
403struct vfsops {
404 vfs_mount_t *vfs_mount;
405 vfs_start_t *vfs_start;
406 vfs_unmount_t *vfs_unmount;
407 vfs_root_t *vfs_root;
408 vfs_quotactl_t *vfs_quotactl;
409 vfs_statfs_t *vfs_statfs;
410 vfs_sync_t *vfs_sync;
411 vfs_vget_t *vfs_vget;
412 vfs_fhtovp_t *vfs_fhtovp;
413 vfs_checkexp_t *vfs_checkexp;
414 vfs_vptofh_t *vfs_vptofh;
415 vfs_init_t *vfs_init;
416 vfs_uninit_t *vfs_uninit;
417 vfs_extattrctl_t *vfs_extattrctl;
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418};
419
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420#define VFS_MOUNT(MP, PATH, DATA, CRED) \
421 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED)
422#define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS)
423#define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE)
984263bc 424#define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
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425#define VFS_QUOTACTL(MP,C,U,A,CRED) \
426 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED)
427#define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED)
87de5057 428#define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT)
984263bc 429#define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
acde96db 430#define VFS_FHTOVP(MP, FIDP, VPP) \
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431 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
432#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
433#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
434 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
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435#define VFS_EXTATTRCTL(MP, C, N, A, CRED) \
436 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED)
984263bc 437
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438#endif
439
440#ifdef _KERNEL
441
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442#include <sys/module.h>
443
444#define VFS_SET(vfsops, fsname, flags) \
445 static struct vfsconf fsname ## _vfsconf = { \
446 &vfsops, \
447 #fsname, \
448 -1, \
449 0, \
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450 flags, \
451 NULL \
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452 }; \
453 static moduledata_t fsname ## _mod = { \
454 #fsname, \
455 vfs_modevent, \
456 & fsname ## _vfsconf \
457 }; \
458 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
459
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460#endif
461
462#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
463
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464#include <net/radix.h>
465
466#define AF_MAX 33 /* XXX */
467
468/*
469 * Network address lookup element
470 */
471struct netcred {
472 struct radix_node netc_rnodes[2];
473 int netc_exflags;
474 struct ucred netc_anon;
475};
476
477/*
478 * Network export information
479 */
480struct netexport {
481 struct netcred ne_defexported; /* Default export */
482 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
483};
484
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485#endif
486
487#ifdef _KERNEL
488
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489extern char *mountrootfsname;
490
491/*
492 * exported vnode operations
493 */
acde96db 494int dounmount (struct mount *, int);
984263bc 495int vfs_setpublicfs /* set publicly exported fs */
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496 (struct mount *, struct netexport *, struct export_args *);
497int vfs_lock (struct mount *); /* lock a vfs */
498void vfs_msync (struct mount *, int);
499void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 500int vfs_busy (struct mount *, int);
6bdbb368 501void vfs_bufstats(void);
984263bc 502int vfs_export /* process mount export info */
b153f746 503 (struct mount *, struct netexport *, struct export_args *);
984263bc 504struct netcred *vfs_export_lookup /* lookup host in fs export list */
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505 (struct mount *, struct netexport *, struct sockaddr *);
506int vfs_allocate_syncvnode (struct mount *);
507void vfs_getnewfsid (struct mount *);
b13267a5 508cdev_t vfs_getrootfsid (struct mount *);
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509struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
510int vfs_modevent (module_t, int, void *);
511int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
512int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 513void vfs_unbusy (struct mount *);
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514void vfs_unmountall (void);
515int vfs_register (struct vfsconf *);
516int vfs_unregister (struct vfsconf *);
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517extern struct nfs_public nfs_pub;
518
519/*
520 * Declarations for these vfs default operations are located in
521 * kern/vfs_default.c, they should be used instead of making "dummy"
522 * functions or casting entries in the VFS op table to "enopnotsupp()".
523 */
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524vfs_start_t vfs_stdstart;
525vfs_mount_t vfs_stdmount;
526vfs_unmount_t vfs_stdunmount;
527vfs_root_t vfs_stdroot;
528vfs_quotactl_t vfs_stdquotactl;
529vfs_statfs_t vfs_stdstatfs;
530vfs_sync_t vfs_stdsync;
531vfs_sync_t vfs_stdnosync;
532vfs_vget_t vfs_stdvget;
533vfs_fhtovp_t vfs_stdfhtovp;
534vfs_checkexp_t vfs_stdcheckexp;
535vfs_vptofh_t vfs_stdvptofh;
536vfs_init_t vfs_stdinit;
537vfs_uninit_t vfs_stduninit;
acde96db 538vfs_extattrctl_t vfs_stdextattrctl;
43c45e8f 539
2281065e 540int journal_mountctl(struct vop_mountctl_args *ap);
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541void journal_remove_all_journals(struct mount *mp, int flags);
542
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543void mountlist_insert(struct mount *, int);
544int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
545struct mount *mountlist_boot_getfirst(void);
546void mountlist_remove(struct mount *mp);
547int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
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548
549#else /* !_KERNEL */
550
551#include <sys/cdefs.h>
552
553__BEGIN_DECLS
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554int fstatfs (int, struct statfs *);
555int getfh (const char *, fhandle_t *);
556int getfsstat (struct statfs *, long, int);
557int getmntinfo (struct statfs **, int);
558int mount (const char *, const char *, int, void *);
559int statfs (const char *, struct statfs *);
560int unmount (const char *, int);
561int fhopen (const struct fhandle *, int);
562int fhstat (const struct fhandle *, struct stat *);
563int fhstatfs (const struct fhandle *, struct statfs *);
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564
565/* C library stuff */
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566void endvfsent (void);
567struct ovfsconf *getvfsbyname (const char *);
568struct ovfsconf *getvfsbytype (int);
569struct ovfsconf *getvfsent (void);
984263bc 570#define getvfsbyname new_getvfsbyname
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571int new_getvfsbyname (const char *, struct vfsconf *);
572void setvfsent (int);
573int vfsisloadable (const char *);
574int vfsload (const char *);
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575__END_DECLS
576
577#endif /* _KERNEL */
578
579#endif /* !_SYS_MOUNT_H_ */
ec12abe0 580