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[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 $
d3bdc5e5 35 * $DragonFly: src/sys/sys/mount.h,v 1.44 2008/06/02 06:42:45 hasso 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
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59#ifndef _SYS_STATVFS_H_
60#include <sys/statvfs.h>
61#endif
03d6a592 62#endif
984263bc 63
dadab5e9 64struct thread;
2281065e 65struct journal;
0961aa92 66struct vop_ops;
2281065e 67struct vop_mountctl_args;
0e735c8f 68struct statvfs;
dadab5e9 69
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70typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
71
72/*
73 * File identifier.
74 * These are unique per filesystem on a single machine.
75 */
76#define MAXFIDSZ 16
77
78struct fid {
79 u_short fid_len; /* length of data in bytes */
80 u_short fid_reserved; /* force longword alignment */
81 char fid_data[MAXFIDSZ]; /* data (variable length) */
82};
83
84/*
85 * file system statistics
86 */
87
88#define MFSNAMELEN 16 /* length of fs type name, including null */
984263bc 89#define MNAMELEN 80 /* length of buffer for returned name */
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90
91struct statfs {
92 long f_spare2; /* placeholder */
93 long f_bsize; /* fundamental file system block size */
94 long f_iosize; /* optimal transfer block size */
95 long f_blocks; /* total data blocks in file system */
96 long f_bfree; /* free blocks in fs */
97 long f_bavail; /* free blocks avail to non-superuser */
98 long f_files; /* total file nodes in file system */
99 long f_ffree; /* free file nodes in fs */
100 fsid_t f_fsid; /* file system id */
101 uid_t f_owner; /* user that mounted the filesystem */
102 int f_type; /* type of filesystem */
103 int f_flags; /* copy of mount exported flags */
104 long f_syncwrites; /* count of sync writes since mount */
105 long f_asyncwrites; /* count of async writes since mount */
106 char f_fstypename[MFSNAMELEN]; /* fs type name */
107 char f_mntonname[MNAMELEN]; /* directory on which mounted */
108 long f_syncreads; /* count of sync reads since mount */
109 long f_asyncreads; /* count of async reads since mount */
110 short f_spares1; /* unused spare */
111 char f_mntfromname[MNAMELEN];/* mounted filesystem */
112 short f_spares2; /* unused spare */
113 long f_spare[2]; /* unused spare */
114};
115
ec12abe0 116#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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117
118/*
119 * bio_ops are associated with the mount structure and used in conjuction
120 * with the b_dep field in a buffer. Currently softupdates and HAMMER
121 * utilize this field.
122 */
123struct buf;
124
125struct bio_ops {
126 TAILQ_ENTRY(bio_ops) entry;
127 void (*io_start) (struct buf *);
128 void (*io_complete) (struct buf *);
129 void (*io_deallocate) (struct buf *);
130 int (*io_fsync) (struct vnode *);
131 int (*io_sync) (struct mount *);
132 void (*io_movedeps) (struct buf *, struct buf *);
133 int (*io_countdeps) (struct buf *, int);
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134 int (*io_checkread) (struct buf *);
135 int (*io_checkwrite) (struct buf *);
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136};
137
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138/*
139 * Structure per mounted file system. Each mounted file system has an
140 * array of operations and an instance record. The file systems are
141 * put on a doubly linked list.
142 *
143 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
144 * are linked into mnt_nvnodelist. At some point in the near future the
145 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
146 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
147 * list. Filesystem kld's syncing code should remain compatible since
148 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 149 *
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150 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
151 * only take namecache pointers will not be able to find their operations
152 * vector via namecache->nc_mount.
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153 */
154TAILQ_HEAD(vnodelst, vnode);
2281065e 155TAILQ_HEAD(journallst, journal);
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156
157struct mount {
158 TAILQ_ENTRY(mount) mnt_list; /* mount list */
159 struct vfsops *mnt_op; /* operations on fs */
160 struct vfsconf *mnt_vfc; /* configuration info */
1d505369 161 void *mnt_unused01;
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162 struct vnode *mnt_syncer; /* syncer vnode */
163 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
164 struct lock mnt_lock; /* mount structure lock */
165 int mnt_flag; /* flags shared with user */
166 int mnt_kern_flag; /* kernel only flags */
167 int mnt_maxsymlinklen; /* max size of short symlink */
168 struct statfs mnt_stat; /* cache of filesystem stats */
d9fad06e 169 struct statvfs mnt_vstat; /* extended stats */
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170 qaddr_t mnt_data; /* private data */
171 time_t mnt_time; /* last time written*/
172 u_int mnt_iosize_max; /* max IO request size */
173 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
174 int mnt_nvnodelistsize; /* # of vnodes on this mount */
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175
176 /*
177 * ops vectors have a fixed stacking order. All primary calls run
178 * through mnt_vn_ops. This field is typically assigned to
179 * mnt_vn_norm_ops. If journaling has been enabled this field is
180 * usually assigned to mnt_vn_journal_ops.
181 */
182 struct vop_ops *mnt_vn_use_ops; /* current ops set */
183
184 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
185 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
186 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
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187 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
188 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
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189 struct nchandle mnt_ncmountpt; /* mount point */
190 struct nchandle mnt_ncmounton; /* mounted on */
191 int mnt_refs; /* nchandle references */
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192
193 struct journallst mnt_jlist; /* list of active journals */
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194 u_int8_t *mnt_jbitmap; /* streamid bitmap */
195 int16_t mnt_streamid; /* last streamid */
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196
197 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
984263bc 198};
2281065e 199
ec12abe0 200#endif /* _KERNEL || _KERNEL_STRUCTURES */
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201
202/*
203 * User specifiable flags.
204 */
205#define MNT_RDONLY 0x00000001 /* read only filesystem */
206#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
207#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
208#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
209#define MNT_NODEV 0x00000010 /* don't interpret special files */
210#define MNT_UNION 0x00000020 /* union with underlying filesystem */
211#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
212#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
213#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
214#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
215#define MNT_NOATIME 0x10000000 /* disable update of file access time */
216#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
217#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
218
219/*
220 * NFS export related mount flags.
221 */
222#define MNT_EXRDONLY 0x00000080 /* exported read only */
223#define MNT_EXPORTED 0x00000100 /* file system is exported */
224#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
225#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
226#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
227#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
228
229/*
230 * Flags set by internal operations,
231 * but visible to the user.
232 * XXX some of these are not quite right.. (I've never seen the root flag set)
233 */
234#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
235#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
236#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
237#define MNT_USER 0x00008000 /* mounted by a user */
238#define MNT_IGNORE 0x00800000 /* do not show entry in df */
239
240/*
241 * Mask of flags that are visible to statfs()
242 * XXX I think that this could now become (~(MNT_CMDFLAGS))
243 * but the 'mount' program may need changing to handle this.
244 */
245#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
246 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
247 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
248 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
249 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
250 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
251 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
252 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC )
253/*
254 * External filesystem command modifier flags.
255 * Unmount can use the MNT_FORCE flag.
256 * XXX These are not STATES and really should be somewhere else.
257 */
258#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
259#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
260#define MNT_RELOAD 0x00040000 /* reload filesystem data */
261#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
262#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
263/*
264 * Internal filesystem control flags stored in mnt_kern_flag.
265 *
266 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
267 * past the mount point. This keeps the subtree stable during mounts
268 * and unmounts.
269 *
270 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
271 * dounmount() is still waiting to lock the mountpoint. This allows
272 * the filesystem to cancel operations that might otherwise deadlock
273 * with the unmount attempt (used by NFS).
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274 *
275 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
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276 */
277#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
28623bf9 278#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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279#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
280#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
281#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 282#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
5dc91765 283#define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
984263bc 284
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285/*
286 * mountlist_*() defines
287 */
288#define MNTSCAN_FORWARD 0x0001
289#define MNTSCAN_REVERSE 0x0002
290#define MNTSCAN_NOBUSY 0x0004
291
292#define MNTINS_FIRST 0x0001
293#define MNTINS_LAST 0x0002
294
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295/*
296 * Sysctl CTL_VFS definitions.
297 *
298 * Second level identifier specifies which filesystem. Second level
299 * identifier VFS_VFSCONF returns information about all filesystems.
300 * Second level identifier VFS_GENERIC is non-terminal.
301 */
302#define VFS_VFSCONF 0 /* get configured filesystems */
303#define VFS_GENERIC 0 /* generic filesystem information */
304/*
305 * Third level identifiers for VFS_GENERIC are given below; third
306 * level identifiers for specific filesystems are given in their
307 * mount specific header files.
308 */
309#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
310#define VFS_CONF 2 /* struct: vfsconf for filesystem given
311 as next argument */
312
313/*
314 * Flags for various system call interfaces.
315 *
316 * waitfor flags to vfs_sync() and getfsstat()
317 */
318#define MNT_WAIT 1 /* synchronously wait for I/O to complete */
319#define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
6bae6177 320#define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
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321
322/*
323 * Generic file handle
324 */
325struct fhandle {
326 fsid_t fh_fsid; /* File system id of mount point */
327 struct fid fh_fid; /* File sys specific id */
328};
329typedef struct fhandle fhandle_t;
330
331/*
332 * Export arguments for local filesystem mount calls.
333 */
334struct export_args {
335 int ex_flags; /* export related flags */
336 uid_t ex_root; /* mapping for root uid */
337 struct ucred ex_anon; /* mapping for anonymous user */
338 struct sockaddr *ex_addr; /* net address to which exported */
339 int ex_addrlen; /* and the net address length */
340 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
341 int ex_masklen; /* and the smask length */
342 char *ex_indexfile; /* index file for WebNFS URLs */
343};
344
345/*
346 * Structure holding information for a publicly exported filesystem
347 * (WebNFS). Currently the specs allow just for one such filesystem.
348 */
349struct nfs_public {
350 int np_valid; /* Do we hold valid information */
351 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
352 struct mount *np_mount; /* Mountpoint of exported fs */
353 char *np_index; /* Index file */
354};
355
356/*
357 * Filesystem configuration information. One of these exists for each
358 * type of filesystem supported by the kernel. These are searched at
359 * mount time to identify the requested filesystem.
360 */
361struct vfsconf {
362 struct vfsops *vfc_vfsops; /* filesystem operations vector */
363 char vfc_name[MFSNAMELEN]; /* filesystem type name */
364 int vfc_typenum; /* historic filesystem type number */
365 int vfc_refcount; /* number mounted of this type */
366 int vfc_flags; /* permanent flags */
367 struct vfsconf *vfc_next; /* next in list */
368};
369
370struct ovfsconf {
371 void *vfc_vfsops;
372 char vfc_name[32];
373 int vfc_index;
374 int vfc_refcount;
375 int vfc_flags;
376};
377
378/*
379 * NB: these flags refer to IMPLEMENTATION properties, not properties of
380 * any actual mounts; i.e., it does not make sense to change the flags.
381 */
382#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
383#define VFCF_NETWORK 0x00020000 /* may get data over the network */
384#define VFCF_READONLY 0x00040000 /* writes are not implemented */
385#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
386#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
387#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
388
389#ifdef _KERNEL
390
391#ifdef MALLOC_DECLARE
392MALLOC_DECLARE(M_MOUNT);
393#endif
394extern int maxvfsconf; /* highest defined filesystem type */
395extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
396extern struct vfsconf *vfsconf; /* head of list of filesystem types */
397
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398#endif
399
400#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
401
402TAILQ_HEAD(mntlist, mount); /* struct mntlist */
403
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404/*
405 * Operations supported on mounted file system.
406 */
407#ifdef __STDC__
21739618 408struct nlookupdata;
fad57d0e 409struct nlookupdata;
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410struct mbuf;
411#endif
412
43c45e8f 413typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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414 struct ucred *cred);
415typedef int vfs_start_t(struct mount *mp, int flags);
416typedef int vfs_unmount_t(struct mount *mp, int mntflags);
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417typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
418typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 419 struct ucred *cred);
43c45e8f 420typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 421 struct ucred *cred);
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422typedef int vfs_statvfs_t(struct mount *mp, struct statvfs *sbp,
423 struct ucred *cred);
87de5057 424typedef int vfs_sync_t(struct mount *mp, int waitfor);
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425typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp);
426typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp,
b153f746 427 struct vnode **vpp);
43c45e8f 428typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 429 int *extflagsp, struct ucred **credanonp);
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430typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
431typedef int vfs_init_t(struct vfsconf *);
432typedef int vfs_uninit_t(struct vfsconf *);
433typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname,
acde96db 434 caddr_t arg, struct ucred *cred);
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435
436struct vfsops {
437 vfs_mount_t *vfs_mount;
438 vfs_start_t *vfs_start;
439 vfs_unmount_t *vfs_unmount;
440 vfs_root_t *vfs_root;
441 vfs_quotactl_t *vfs_quotactl;
442 vfs_statfs_t *vfs_statfs;
443 vfs_sync_t *vfs_sync;
444 vfs_vget_t *vfs_vget;
445 vfs_fhtovp_t *vfs_fhtovp;
446 vfs_checkexp_t *vfs_checkexp;
447 vfs_vptofh_t *vfs_vptofh;
448 vfs_init_t *vfs_init;
449 vfs_uninit_t *vfs_uninit;
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450 vfs_extattrctl_t *vfs_extattrctl;
451 vfs_statvfs_t *vfs_statvfs;
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452};
453
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454#define VFS_MOUNT(MP, PATH, DATA, CRED) \
455 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED)
456#define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS)
457#define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE)
984263bc 458#define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
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459#define VFS_QUOTACTL(MP,C,U,A,CRED) \
460 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED)
461#define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED)
d9fad06e 462#define VFS_STATVFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statvfs)(MP, SBP, CRED)
87de5057 463#define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT)
984263bc 464#define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
acde96db 465#define VFS_FHTOVP(MP, FIDP, VPP) \
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466 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
467#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
468#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
469 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
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470#define VFS_EXTATTRCTL(MP, C, N, A, CRED) \
471 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED)
984263bc 472
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473#endif
474
475#ifdef _KERNEL
476
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477#include <sys/module.h>
478
479#define VFS_SET(vfsops, fsname, flags) \
480 static struct vfsconf fsname ## _vfsconf = { \
481 &vfsops, \
482 #fsname, \
483 -1, \
484 0, \
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485 flags, \
486 NULL \
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487 }; \
488 static moduledata_t fsname ## _mod = { \
489 #fsname, \
490 vfs_modevent, \
491 & fsname ## _vfsconf \
492 }; \
493 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
494
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495#endif
496
497#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
498
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499#include <net/radix.h>
500
0a9108eb 501#define AF_MAX 34 /* XXX */
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502
503/*
504 * Network address lookup element
505 */
506struct netcred {
507 struct radix_node netc_rnodes[2];
508 int netc_exflags;
509 struct ucred netc_anon;
510};
511
512/*
513 * Network export information
514 */
515struct netexport {
516 struct netcred ne_defexported; /* Default export */
517 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
518};
519
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520#endif
521
522#ifdef _KERNEL
523
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524extern char *mountrootfsname;
525
526/*
527 * exported vnode operations
528 */
acde96db 529int dounmount (struct mount *, int);
984263bc 530int vfs_setpublicfs /* set publicly exported fs */
1aa89f17 531 (struct mount *, struct netexport *, const struct export_args *);
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532int vfs_lock (struct mount *); /* lock a vfs */
533void vfs_msync (struct mount *, int);
534void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 535int vfs_busy (struct mount *, int);
6bdbb368 536void vfs_bufstats(void);
984263bc 537int vfs_export /* process mount export info */
1aa89f17 538 (struct mount *, struct netexport *, const struct export_args *);
984263bc 539struct netcred *vfs_export_lookup /* lookup host in fs export list */
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540 (struct mount *, struct netexport *, struct sockaddr *);
541int vfs_allocate_syncvnode (struct mount *);
542void vfs_getnewfsid (struct mount *);
b13267a5 543cdev_t vfs_getrootfsid (struct mount *);
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544struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
545int vfs_modevent (module_t, int, void *);
546int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
547int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 548void vfs_unbusy (struct mount *);
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549void vfs_unmountall (void);
550int vfs_register (struct vfsconf *);
551int vfs_unregister (struct vfsconf *);
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552extern struct nfs_public nfs_pub;
553
554/*
555 * Declarations for these vfs default operations are located in
556 * kern/vfs_default.c, they should be used instead of making "dummy"
557 * functions or casting entries in the VFS op table to "enopnotsupp()".
558 */
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559vfs_start_t vfs_stdstart;
560vfs_mount_t vfs_stdmount;
561vfs_unmount_t vfs_stdunmount;
562vfs_root_t vfs_stdroot;
563vfs_quotactl_t vfs_stdquotactl;
564vfs_statfs_t vfs_stdstatfs;
d9fad06e 565vfs_statvfs_t vfs_stdstatvfs;
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566vfs_sync_t vfs_stdsync;
567vfs_sync_t vfs_stdnosync;
568vfs_vget_t vfs_stdvget;
569vfs_fhtovp_t vfs_stdfhtovp;
570vfs_checkexp_t vfs_stdcheckexp;
571vfs_vptofh_t vfs_stdvptofh;
572vfs_init_t vfs_stdinit;
573vfs_uninit_t vfs_stduninit;
acde96db 574vfs_extattrctl_t vfs_stdextattrctl;
43c45e8f 575
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576struct vop_access_args;
577int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
fb356552 578 mode_t ino_mode, u_int32_t ino_flags);
1399fa3b 579int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags,
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580 uid_t uid, struct ucred *cred);
581uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid,
582 struct ucred *cred, mode_t *modep);
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583int vop_helper_chmod(struct vnode *vp, mode_t new_mode, struct ucred *cred,
584 uid_t cur_uid, gid_t cur_gid, mode_t *cur_modep);
585int vop_helper_chown(struct vnode *vp, uid_t new_uid, gid_t new_gid,
586 struct ucred *cred,
587 uid_t *cur_uidp, gid_t *cur_gidp, mode_t *cur_modep);
1399fa3b 588
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589void add_bio_ops(struct bio_ops *ops);
590void rem_bio_ops(struct bio_ops *ops);
9340415c 591
2281065e 592int journal_mountctl(struct vop_mountctl_args *ap);
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593void journal_remove_all_journals(struct mount *mp, int flags);
594
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595void mountlist_insert(struct mount *, int);
596int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
597struct mount *mountlist_boot_getfirst(void);
598void mountlist_remove(struct mount *mp);
599int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
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600
601#else /* !_KERNEL */
602
603#include <sys/cdefs.h>
604
605__BEGIN_DECLS
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606int fstatfs (int, struct statfs *);
607int getfh (const char *, fhandle_t *);
608int getfsstat (struct statfs *, long, int);
609int getmntinfo (struct statfs **, int);
0e735c8f 610int getmntvinfo (struct statfs **, struct statvfs **, int);
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611int mount (const char *, const char *, int, void *);
612int statfs (const char *, struct statfs *);
613int unmount (const char *, int);
614int fhopen (const struct fhandle *, int);
615int fhstat (const struct fhandle *, struct stat *);
616int fhstatfs (const struct fhandle *, struct statfs *);
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617
618/* C library stuff */
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619void endvfsent (void);
620struct ovfsconf *getvfsbyname (const char *);
621struct ovfsconf *getvfsbytype (int);
622struct ovfsconf *getvfsent (void);
984263bc 623#define getvfsbyname new_getvfsbyname
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624int new_getvfsbyname (const char *, struct vfsconf *);
625void setvfsent (int);
626int vfsisloadable (const char *);
627int vfsload (const char *);
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628__END_DECLS
629
630#endif /* _KERNEL */
631
632#endif /* !_SYS_MOUNT_H_ */
ec12abe0 633