HAMMER part 2/many.
[dragonfly.git] / sys / sys / mount.h
CommitLineData
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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 $
408357d8 35 * $DragonFly: src/sys/sys/mount.h,v 1.33 2007/11/06 03:50:00 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/*
115 * bio_ops are associated with the mount structure and used in conjuction
116 * with the b_dep field in a buffer. Currently softupdates and HAMMER
117 * utilize this field.
118 */
119struct buf;
120
121struct bio_ops {
122 TAILQ_ENTRY(bio_ops) entry;
123 void (*io_start) (struct buf *);
124 void (*io_complete) (struct buf *);
125 void (*io_deallocate) (struct buf *);
126 int (*io_fsync) (struct vnode *);
127 int (*io_sync) (struct mount *);
128 void (*io_movedeps) (struct buf *, struct buf *);
129 int (*io_countdeps) (struct buf *, int);
130};
131
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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 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
138 * are linked into mnt_nvnodelist. At some point in the near future the
139 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
140 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
141 * list. Filesystem kld's syncing code should remain compatible since
142 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 143 *
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144 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
145 * only take namecache pointers will not be able to find their operations
146 * vector via namecache->nc_mount.
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147 */
148TAILQ_HEAD(vnodelst, vnode);
2281065e 149TAILQ_HEAD(journallst, journal);
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150
151struct mount {
152 TAILQ_ENTRY(mount) mnt_list; /* mount list */
153 struct vfsops *mnt_op; /* operations on fs */
154 struct vfsconf *mnt_vfc; /* configuration info */
1d505369 155 void *mnt_unused01;
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156 struct vnode *mnt_syncer; /* syncer vnode */
157 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
158 struct lock mnt_lock; /* mount structure lock */
159 int mnt_flag; /* flags shared with user */
160 int mnt_kern_flag; /* kernel only flags */
161 int mnt_maxsymlinklen; /* max size of short symlink */
162 struct statfs mnt_stat; /* cache of filesystem stats */
163 qaddr_t mnt_data; /* private data */
164 time_t mnt_time; /* last time written*/
165 u_int mnt_iosize_max; /* max IO request size */
166 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
167 int mnt_nvnodelistsize; /* # of vnodes on this mount */
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168
169 /*
170 * ops vectors have a fixed stacking order. All primary calls run
171 * through mnt_vn_ops. This field is typically assigned to
172 * mnt_vn_norm_ops. If journaling has been enabled this field is
173 * usually assigned to mnt_vn_journal_ops.
174 */
175 struct vop_ops *mnt_vn_use_ops; /* current ops set */
176
177 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
178 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
179 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
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180 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
181 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
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182 struct nchandle mnt_ncmountpt; /* mount point */
183 struct nchandle mnt_ncmounton; /* mounted on */
184 int mnt_refs; /* nchandle references */
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185
186 struct journallst mnt_jlist; /* list of active journals */
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187 u_int8_t *mnt_jbitmap; /* streamid bitmap */
188 int16_t mnt_streamid; /* last streamid */
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189
190 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
984263bc 191};
2281065e 192
ec12abe0 193#endif /* _KERNEL || _KERNEL_STRUCTURES */
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194
195/*
196 * User specifiable flags.
197 */
198#define MNT_RDONLY 0x00000001 /* read only filesystem */
199#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
200#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
201#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
202#define MNT_NODEV 0x00000010 /* don't interpret special files */
203#define MNT_UNION 0x00000020 /* union with underlying filesystem */
204#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
205#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
206#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
207#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
208#define MNT_NOATIME 0x10000000 /* disable update of file access time */
209#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
210#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
211
212/*
213 * NFS export related mount flags.
214 */
215#define MNT_EXRDONLY 0x00000080 /* exported read only */
216#define MNT_EXPORTED 0x00000100 /* file system is exported */
217#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
218#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
219#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
220#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
221
222/*
223 * Flags set by internal operations,
224 * but visible to the user.
225 * XXX some of these are not quite right.. (I've never seen the root flag set)
226 */
227#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
228#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
229#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
230#define MNT_USER 0x00008000 /* mounted by a user */
231#define MNT_IGNORE 0x00800000 /* do not show entry in df */
232
233/*
234 * Mask of flags that are visible to statfs()
235 * XXX I think that this could now become (~(MNT_CMDFLAGS))
236 * but the 'mount' program may need changing to handle this.
237 */
238#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
239 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
240 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
241 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
242 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
243 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
244 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
245 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC )
246/*
247 * External filesystem command modifier flags.
248 * Unmount can use the MNT_FORCE flag.
249 * XXX These are not STATES and really should be somewhere else.
250 */
251#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
252#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
253#define MNT_RELOAD 0x00040000 /* reload filesystem data */
254#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
255#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
256/*
257 * Internal filesystem control flags stored in mnt_kern_flag.
258 *
259 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
260 * past the mount point. This keeps the subtree stable during mounts
261 * and unmounts.
262 *
263 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
264 * dounmount() is still waiting to lock the mountpoint. This allows
265 * the filesystem to cancel operations that might otherwise deadlock
266 * with the unmount attempt (used by NFS).
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267 *
268 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
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269 */
270#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
28623bf9 271#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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272#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
273#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
274#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 275#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
5dc91765 276#define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
984263bc 277
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278/*
279 * mountlist_*() defines
280 */
281#define MNTSCAN_FORWARD 0x0001
282#define MNTSCAN_REVERSE 0x0002
283#define MNTSCAN_NOBUSY 0x0004
284
285#define MNTINS_FIRST 0x0001
286#define MNTINS_LAST 0x0002
287
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288/*
289 * Sysctl CTL_VFS definitions.
290 *
291 * Second level identifier specifies which filesystem. Second level
292 * identifier VFS_VFSCONF returns information about all filesystems.
293 * Second level identifier VFS_GENERIC is non-terminal.
294 */
295#define VFS_VFSCONF 0 /* get configured filesystems */
296#define VFS_GENERIC 0 /* generic filesystem information */
297/*
298 * Third level identifiers for VFS_GENERIC are given below; third
299 * level identifiers for specific filesystems are given in their
300 * mount specific header files.
301 */
302#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
303#define VFS_CONF 2 /* struct: vfsconf for filesystem given
304 as next argument */
305
306/*
307 * Flags for various system call interfaces.
308 *
309 * waitfor flags to vfs_sync() and getfsstat()
310 */
311#define MNT_WAIT 1 /* synchronously wait for I/O to complete */
312#define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
6bae6177 313#define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
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314
315/*
316 * Generic file handle
317 */
318struct fhandle {
319 fsid_t fh_fsid; /* File system id of mount point */
320 struct fid fh_fid; /* File sys specific id */
321};
322typedef struct fhandle fhandle_t;
323
324/*
325 * Export arguments for local filesystem mount calls.
326 */
327struct export_args {
328 int ex_flags; /* export related flags */
329 uid_t ex_root; /* mapping for root uid */
330 struct ucred ex_anon; /* mapping for anonymous user */
331 struct sockaddr *ex_addr; /* net address to which exported */
332 int ex_addrlen; /* and the net address length */
333 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
334 int ex_masklen; /* and the smask length */
335 char *ex_indexfile; /* index file for WebNFS URLs */
336};
337
338/*
339 * Structure holding information for a publicly exported filesystem
340 * (WebNFS). Currently the specs allow just for one such filesystem.
341 */
342struct nfs_public {
343 int np_valid; /* Do we hold valid information */
344 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
345 struct mount *np_mount; /* Mountpoint of exported fs */
346 char *np_index; /* Index file */
347};
348
349/*
350 * Filesystem configuration information. One of these exists for each
351 * type of filesystem supported by the kernel. These are searched at
352 * mount time to identify the requested filesystem.
353 */
354struct vfsconf {
355 struct vfsops *vfc_vfsops; /* filesystem operations vector */
356 char vfc_name[MFSNAMELEN]; /* filesystem type name */
357 int vfc_typenum; /* historic filesystem type number */
358 int vfc_refcount; /* number mounted of this type */
359 int vfc_flags; /* permanent flags */
360 struct vfsconf *vfc_next; /* next in list */
361};
362
363struct ovfsconf {
364 void *vfc_vfsops;
365 char vfc_name[32];
366 int vfc_index;
367 int vfc_refcount;
368 int vfc_flags;
369};
370
371/*
372 * NB: these flags refer to IMPLEMENTATION properties, not properties of
373 * any actual mounts; i.e., it does not make sense to change the flags.
374 */
375#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
376#define VFCF_NETWORK 0x00020000 /* may get data over the network */
377#define VFCF_READONLY 0x00040000 /* writes are not implemented */
378#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
379#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
380#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
381
382#ifdef _KERNEL
383
384#ifdef MALLOC_DECLARE
385MALLOC_DECLARE(M_MOUNT);
386#endif
387extern int maxvfsconf; /* highest defined filesystem type */
388extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
389extern struct vfsconf *vfsconf; /* head of list of filesystem types */
390
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391#endif
392
393#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
394
395TAILQ_HEAD(mntlist, mount); /* struct mntlist */
396
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397/*
398 * Operations supported on mounted file system.
399 */
400#ifdef __STDC__
21739618 401struct nlookupdata;
fad57d0e 402struct nlookupdata;
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403struct mbuf;
404#endif
405
43c45e8f 406typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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407 struct ucred *cred);
408typedef int vfs_start_t(struct mount *mp, int flags);
409typedef int vfs_unmount_t(struct mount *mp, int mntflags);
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410typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
411typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 412 struct ucred *cred);
43c45e8f 413typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 414 struct ucred *cred);
87de5057 415typedef int vfs_sync_t(struct mount *mp, int waitfor);
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416typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp);
417typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp,
b153f746 418 struct vnode **vpp);
43c45e8f 419typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 420 int *extflagsp, struct ucred **credanonp);
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421typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
422typedef int vfs_init_t(struct vfsconf *);
423typedef int vfs_uninit_t(struct vfsconf *);
424typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname,
acde96db 425 caddr_t arg, struct ucred *cred);
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426
427struct vfsops {
428 vfs_mount_t *vfs_mount;
429 vfs_start_t *vfs_start;
430 vfs_unmount_t *vfs_unmount;
431 vfs_root_t *vfs_root;
432 vfs_quotactl_t *vfs_quotactl;
433 vfs_statfs_t *vfs_statfs;
434 vfs_sync_t *vfs_sync;
435 vfs_vget_t *vfs_vget;
436 vfs_fhtovp_t *vfs_fhtovp;
437 vfs_checkexp_t *vfs_checkexp;
438 vfs_vptofh_t *vfs_vptofh;
439 vfs_init_t *vfs_init;
440 vfs_uninit_t *vfs_uninit;
441 vfs_extattrctl_t *vfs_extattrctl;
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442};
443
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444#define VFS_MOUNT(MP, PATH, DATA, CRED) \
445 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED)
446#define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS)
447#define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE)
984263bc 448#define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
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449#define VFS_QUOTACTL(MP,C,U,A,CRED) \
450 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED)
451#define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED)
87de5057 452#define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT)
984263bc 453#define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
acde96db 454#define VFS_FHTOVP(MP, FIDP, VPP) \
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455 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
456#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
457#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
458 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
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459#define VFS_EXTATTRCTL(MP, C, N, A, CRED) \
460 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED)
984263bc 461
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462#endif
463
464#ifdef _KERNEL
465
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466#include <sys/module.h>
467
468#define VFS_SET(vfsops, fsname, flags) \
469 static struct vfsconf fsname ## _vfsconf = { \
470 &vfsops, \
471 #fsname, \
472 -1, \
473 0, \
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474 flags, \
475 NULL \
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476 }; \
477 static moduledata_t fsname ## _mod = { \
478 #fsname, \
479 vfs_modevent, \
480 & fsname ## _vfsconf \
481 }; \
482 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
483
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484#endif
485
486#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
487
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488#include <net/radix.h>
489
490#define AF_MAX 33 /* XXX */
491
492/*
493 * Network address lookup element
494 */
495struct netcred {
496 struct radix_node netc_rnodes[2];
497 int netc_exflags;
498 struct ucred netc_anon;
499};
500
501/*
502 * Network export information
503 */
504struct netexport {
505 struct netcred ne_defexported; /* Default export */
506 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
507};
508
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509#endif
510
511#ifdef _KERNEL
512
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513extern char *mountrootfsname;
514
515/*
516 * exported vnode operations
517 */
acde96db 518int dounmount (struct mount *, int);
984263bc 519int vfs_setpublicfs /* set publicly exported fs */
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520 (struct mount *, struct netexport *, struct export_args *);
521int vfs_lock (struct mount *); /* lock a vfs */
522void vfs_msync (struct mount *, int);
523void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 524int vfs_busy (struct mount *, int);
6bdbb368 525void vfs_bufstats(void);
984263bc 526int vfs_export /* process mount export info */
b153f746 527 (struct mount *, struct netexport *, struct export_args *);
984263bc 528struct netcred *vfs_export_lookup /* lookup host in fs export list */
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529 (struct mount *, struct netexport *, struct sockaddr *);
530int vfs_allocate_syncvnode (struct mount *);
531void vfs_getnewfsid (struct mount *);
b13267a5 532cdev_t vfs_getrootfsid (struct mount *);
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533struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
534int vfs_modevent (module_t, int, void *);
535int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
536int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 537void vfs_unbusy (struct mount *);
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538void vfs_unmountall (void);
539int vfs_register (struct vfsconf *);
540int vfs_unregister (struct vfsconf *);
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541extern struct nfs_public nfs_pub;
542
543/*
544 * Declarations for these vfs default operations are located in
545 * kern/vfs_default.c, they should be used instead of making "dummy"
546 * functions or casting entries in the VFS op table to "enopnotsupp()".
547 */
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548vfs_start_t vfs_stdstart;
549vfs_mount_t vfs_stdmount;
550vfs_unmount_t vfs_stdunmount;
551vfs_root_t vfs_stdroot;
552vfs_quotactl_t vfs_stdquotactl;
553vfs_statfs_t vfs_stdstatfs;
554vfs_sync_t vfs_stdsync;
555vfs_sync_t vfs_stdnosync;
556vfs_vget_t vfs_stdvget;
557vfs_fhtovp_t vfs_stdfhtovp;
558vfs_checkexp_t vfs_stdcheckexp;
559vfs_vptofh_t vfs_stdvptofh;
560vfs_init_t vfs_stdinit;
561vfs_uninit_t vfs_stduninit;
acde96db 562vfs_extattrctl_t vfs_stdextattrctl;
43c45e8f 563
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564struct vop_access_args;
565int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
566 mode_t ino_mode, u_int32_t ino_flags);
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567void add_bio_ops(struct bio_ops *ops);
568void rem_bio_ops(struct bio_ops *ops);
9340415c 569
2281065e 570int journal_mountctl(struct vop_mountctl_args *ap);
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571void journal_remove_all_journals(struct mount *mp, int flags);
572
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573void mountlist_insert(struct mount *, int);
574int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
575struct mount *mountlist_boot_getfirst(void);
576void mountlist_remove(struct mount *mp);
577int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
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578
579#else /* !_KERNEL */
580
581#include <sys/cdefs.h>
582
583__BEGIN_DECLS
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584int fstatfs (int, struct statfs *);
585int getfh (const char *, fhandle_t *);
586int getfsstat (struct statfs *, long, int);
587int getmntinfo (struct statfs **, int);
588int mount (const char *, const char *, int, void *);
589int statfs (const char *, struct statfs *);
590int unmount (const char *, int);
591int fhopen (const struct fhandle *, int);
592int fhstat (const struct fhandle *, struct stat *);
593int fhstatfs (const struct fhandle *, struct statfs *);
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594
595/* C library stuff */
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596void endvfsent (void);
597struct ovfsconf *getvfsbyname (const char *);
598struct ovfsconf *getvfsbytype (int);
599struct ovfsconf *getvfsent (void);
984263bc 600#define getvfsbyname new_getvfsbyname
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601int new_getvfsbyname (const char *, struct vfsconf *);
602void setvfsent (int);
603int vfsisloadable (const char *);
604int vfsload (const char *);
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605__END_DECLS
606
607#endif /* _KERNEL */
608
609#endif /* !_SYS_MOUNT_H_ */
ec12abe0 610