Implement a new system call: getvfsstat(). This system call returns
[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 $
00fe9d48 35 * $DragonFly: src/sys/sys/mount.h,v 1.41 2008/06/01 19:55:32 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
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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;
dadab5e9 68
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69typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
70
71/*
72 * File identifier.
73 * These are unique per filesystem on a single machine.
74 */
75#define MAXFIDSZ 16
76
77struct fid {
78 u_short fid_len; /* length of data in bytes */
79 u_short fid_reserved; /* force longword alignment */
80 char fid_data[MAXFIDSZ]; /* data (variable length) */
81};
82
83/*
84 * file system statistics
85 */
86
87#define MFSNAMELEN 16 /* length of fs type name, including null */
984263bc 88#define MNAMELEN 80 /* length of buffer for returned name */
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89
90struct statfs {
91 long f_spare2; /* placeholder */
92 long f_bsize; /* fundamental file system block size */
93 long f_iosize; /* optimal transfer block size */
94 long f_blocks; /* total data blocks in file system */
95 long f_bfree; /* free blocks in fs */
96 long f_bavail; /* free blocks avail to non-superuser */
97 long f_files; /* total file nodes in file system */
98 long f_ffree; /* free file nodes in fs */
99 fsid_t f_fsid; /* file system id */
100 uid_t f_owner; /* user that mounted the filesystem */
101 int f_type; /* type of filesystem */
102 int f_flags; /* copy of mount exported flags */
103 long f_syncwrites; /* count of sync writes since mount */
104 long f_asyncwrites; /* count of async writes since mount */
105 char f_fstypename[MFSNAMELEN]; /* fs type name */
106 char f_mntonname[MNAMELEN]; /* directory on which mounted */
107 long f_syncreads; /* count of sync reads since mount */
108 long f_asyncreads; /* count of async reads since mount */
109 short f_spares1; /* unused spare */
110 char f_mntfromname[MNAMELEN];/* mounted filesystem */
111 short f_spares2; /* unused spare */
112 long f_spare[2]; /* unused spare */
113};
114
ec12abe0 115#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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116
117/*
118 * bio_ops are associated with the mount structure and used in conjuction
119 * with the b_dep field in a buffer. Currently softupdates and HAMMER
120 * utilize this field.
121 */
122struct buf;
123
124struct bio_ops {
125 TAILQ_ENTRY(bio_ops) entry;
126 void (*io_start) (struct buf *);
127 void (*io_complete) (struct buf *);
128 void (*io_deallocate) (struct buf *);
129 int (*io_fsync) (struct vnode *);
130 int (*io_sync) (struct mount *);
131 void (*io_movedeps) (struct buf *, struct buf *);
132 int (*io_countdeps) (struct buf *, int);
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133 int (*io_checkread) (struct buf *);
134 int (*io_checkwrite) (struct buf *);
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135};
136
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137/*
138 * Structure per mounted file system. Each mounted file system has an
139 * array of operations and an instance record. The file systems are
140 * put on a doubly linked list.
141 *
142 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
143 * are linked into mnt_nvnodelist. At some point in the near future the
144 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
145 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
146 * list. Filesystem kld's syncing code should remain compatible since
147 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 148 *
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149 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
150 * only take namecache pointers will not be able to find their operations
151 * vector via namecache->nc_mount.
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152 */
153TAILQ_HEAD(vnodelst, vnode);
2281065e 154TAILQ_HEAD(journallst, journal);
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155
156struct mount {
157 TAILQ_ENTRY(mount) mnt_list; /* mount list */
158 struct vfsops *mnt_op; /* operations on fs */
159 struct vfsconf *mnt_vfc; /* configuration info */
1d505369 160 void *mnt_unused01;
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161 struct vnode *mnt_syncer; /* syncer vnode */
162 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
163 struct lock mnt_lock; /* mount structure lock */
164 int mnt_flag; /* flags shared with user */
165 int mnt_kern_flag; /* kernel only flags */
166 int mnt_maxsymlinklen; /* max size of short symlink */
167 struct statfs mnt_stat; /* cache of filesystem stats */
d9fad06e 168 struct statvfs mnt_vstat; /* extended stats */
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169 qaddr_t mnt_data; /* private data */
170 time_t mnt_time; /* last time written*/
171 u_int mnt_iosize_max; /* max IO request size */
172 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
173 int mnt_nvnodelistsize; /* # of vnodes on this mount */
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174
175 /*
176 * ops vectors have a fixed stacking order. All primary calls run
177 * through mnt_vn_ops. This field is typically assigned to
178 * mnt_vn_norm_ops. If journaling has been enabled this field is
179 * usually assigned to mnt_vn_journal_ops.
180 */
181 struct vop_ops *mnt_vn_use_ops; /* current ops set */
182
183 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
184 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
185 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
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186 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
187 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
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188 struct nchandle mnt_ncmountpt; /* mount point */
189 struct nchandle mnt_ncmounton; /* mounted on */
190 int mnt_refs; /* nchandle references */
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191
192 struct journallst mnt_jlist; /* list of active journals */
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193 u_int8_t *mnt_jbitmap; /* streamid bitmap */
194 int16_t mnt_streamid; /* last streamid */
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195
196 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
984263bc 197};
2281065e 198
ec12abe0 199#endif /* _KERNEL || _KERNEL_STRUCTURES */
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200
201/*
202 * User specifiable flags.
203 */
204#define MNT_RDONLY 0x00000001 /* read only filesystem */
205#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
206#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
207#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
208#define MNT_NODEV 0x00000010 /* don't interpret special files */
209#define MNT_UNION 0x00000020 /* union with underlying filesystem */
210#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
211#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
212#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
213#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
214#define MNT_NOATIME 0x10000000 /* disable update of file access time */
215#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
216#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
217
218/*
219 * NFS export related mount flags.
220 */
221#define MNT_EXRDONLY 0x00000080 /* exported read only */
222#define MNT_EXPORTED 0x00000100 /* file system is exported */
223#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
224#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
225#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
226#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
227
228/*
229 * Flags set by internal operations,
230 * but visible to the user.
231 * XXX some of these are not quite right.. (I've never seen the root flag set)
232 */
233#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
234#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
235#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
236#define MNT_USER 0x00008000 /* mounted by a user */
237#define MNT_IGNORE 0x00800000 /* do not show entry in df */
238
239/*
240 * Mask of flags that are visible to statfs()
241 * XXX I think that this could now become (~(MNT_CMDFLAGS))
242 * but the 'mount' program may need changing to handle this.
243 */
244#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
245 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
246 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
247 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
248 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
249 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
250 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
251 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC )
252/*
253 * External filesystem command modifier flags.
254 * Unmount can use the MNT_FORCE flag.
255 * XXX These are not STATES and really should be somewhere else.
256 */
257#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
258#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
259#define MNT_RELOAD 0x00040000 /* reload filesystem data */
260#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
261#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
262/*
263 * Internal filesystem control flags stored in mnt_kern_flag.
264 *
265 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
266 * past the mount point. This keeps the subtree stable during mounts
267 * and unmounts.
268 *
269 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
270 * dounmount() is still waiting to lock the mountpoint. This allows
271 * the filesystem to cancel operations that might otherwise deadlock
272 * with the unmount attempt (used by NFS).
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273 *
274 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
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275 */
276#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
28623bf9 277#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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278#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
279#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
280#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 281#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
5dc91765 282#define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
984263bc 283
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284/*
285 * mountlist_*() defines
286 */
287#define MNTSCAN_FORWARD 0x0001
288#define MNTSCAN_REVERSE 0x0002
289#define MNTSCAN_NOBUSY 0x0004
290
291#define MNTINS_FIRST 0x0001
292#define MNTINS_LAST 0x0002
293
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294/*
295 * Sysctl CTL_VFS definitions.
296 *
297 * Second level identifier specifies which filesystem. Second level
298 * identifier VFS_VFSCONF returns information about all filesystems.
299 * Second level identifier VFS_GENERIC is non-terminal.
300 */
301#define VFS_VFSCONF 0 /* get configured filesystems */
302#define VFS_GENERIC 0 /* generic filesystem information */
303/*
304 * Third level identifiers for VFS_GENERIC are given below; third
305 * level identifiers for specific filesystems are given in their
306 * mount specific header files.
307 */
308#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
309#define VFS_CONF 2 /* struct: vfsconf for filesystem given
310 as next argument */
311
312/*
313 * Flags for various system call interfaces.
314 *
315 * waitfor flags to vfs_sync() and getfsstat()
316 */
317#define MNT_WAIT 1 /* synchronously wait for I/O to complete */
318#define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
6bae6177 319#define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
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320
321/*
322 * Generic file handle
323 */
324struct fhandle {
325 fsid_t fh_fsid; /* File system id of mount point */
326 struct fid fh_fid; /* File sys specific id */
327};
328typedef struct fhandle fhandle_t;
329
330/*
331 * Export arguments for local filesystem mount calls.
332 */
333struct export_args {
334 int ex_flags; /* export related flags */
335 uid_t ex_root; /* mapping for root uid */
336 struct ucred ex_anon; /* mapping for anonymous user */
337 struct sockaddr *ex_addr; /* net address to which exported */
338 int ex_addrlen; /* and the net address length */
339 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
340 int ex_masklen; /* and the smask length */
341 char *ex_indexfile; /* index file for WebNFS URLs */
342};
343
344/*
345 * Structure holding information for a publicly exported filesystem
346 * (WebNFS). Currently the specs allow just for one such filesystem.
347 */
348struct nfs_public {
349 int np_valid; /* Do we hold valid information */
350 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
351 struct mount *np_mount; /* Mountpoint of exported fs */
352 char *np_index; /* Index file */
353};
354
355/*
356 * Filesystem configuration information. One of these exists for each
357 * type of filesystem supported by the kernel. These are searched at
358 * mount time to identify the requested filesystem.
359 */
360struct vfsconf {
361 struct vfsops *vfc_vfsops; /* filesystem operations vector */
362 char vfc_name[MFSNAMELEN]; /* filesystem type name */
363 int vfc_typenum; /* historic filesystem type number */
364 int vfc_refcount; /* number mounted of this type */
365 int vfc_flags; /* permanent flags */
366 struct vfsconf *vfc_next; /* next in list */
367};
368
369struct ovfsconf {
370 void *vfc_vfsops;
371 char vfc_name[32];
372 int vfc_index;
373 int vfc_refcount;
374 int vfc_flags;
375};
376
377/*
378 * NB: these flags refer to IMPLEMENTATION properties, not properties of
379 * any actual mounts; i.e., it does not make sense to change the flags.
380 */
381#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
382#define VFCF_NETWORK 0x00020000 /* may get data over the network */
383#define VFCF_READONLY 0x00040000 /* writes are not implemented */
384#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
385#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
386#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
387
388#ifdef _KERNEL
389
390#ifdef MALLOC_DECLARE
391MALLOC_DECLARE(M_MOUNT);
392#endif
393extern int maxvfsconf; /* highest defined filesystem type */
394extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
395extern struct vfsconf *vfsconf; /* head of list of filesystem types */
396
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397#endif
398
399#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
400
401TAILQ_HEAD(mntlist, mount); /* struct mntlist */
402
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403/*
404 * Operations supported on mounted file system.
405 */
406#ifdef __STDC__
21739618 407struct nlookupdata;
fad57d0e 408struct nlookupdata;
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409struct mbuf;
410#endif
411
43c45e8f 412typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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413 struct ucred *cred);
414typedef int vfs_start_t(struct mount *mp, int flags);
415typedef int vfs_unmount_t(struct mount *mp, int mntflags);
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416typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
417typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 418 struct ucred *cred);
43c45e8f 419typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 420 struct ucred *cred);
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421typedef int vfs_statvfs_t(struct mount *mp, struct statvfs *sbp,
422 struct ucred *cred);
87de5057 423typedef int vfs_sync_t(struct mount *mp, int waitfor);
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424typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp);
425typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp,
b153f746 426 struct vnode **vpp);
43c45e8f 427typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 428 int *extflagsp, struct ucred **credanonp);
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429typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
430typedef int vfs_init_t(struct vfsconf *);
431typedef int vfs_uninit_t(struct vfsconf *);
432typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname,
acde96db 433 caddr_t arg, struct ucred *cred);
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434
435struct vfsops {
436 vfs_mount_t *vfs_mount;
437 vfs_start_t *vfs_start;
438 vfs_unmount_t *vfs_unmount;
439 vfs_root_t *vfs_root;
440 vfs_quotactl_t *vfs_quotactl;
441 vfs_statfs_t *vfs_statfs;
442 vfs_sync_t *vfs_sync;
443 vfs_vget_t *vfs_vget;
444 vfs_fhtovp_t *vfs_fhtovp;
445 vfs_checkexp_t *vfs_checkexp;
446 vfs_vptofh_t *vfs_vptofh;
447 vfs_init_t *vfs_init;
448 vfs_uninit_t *vfs_uninit;
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449 vfs_extattrctl_t *vfs_extattrctl;
450 vfs_statvfs_t *vfs_statvfs;
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451};
452
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453#define VFS_MOUNT(MP, PATH, DATA, CRED) \
454 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED)
455#define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS)
456#define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE)
984263bc 457#define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
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458#define VFS_QUOTACTL(MP,C,U,A,CRED) \
459 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED)
460#define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED)
d9fad06e 461#define VFS_STATVFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statvfs)(MP, SBP, CRED)
87de5057 462#define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT)
984263bc 463#define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
acde96db 464#define VFS_FHTOVP(MP, FIDP, VPP) \
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465 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
466#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
467#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
468 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
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469#define VFS_EXTATTRCTL(MP, C, N, A, CRED) \
470 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED)
984263bc 471
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472#endif
473
474#ifdef _KERNEL
475
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476#include <sys/module.h>
477
478#define VFS_SET(vfsops, fsname, flags) \
479 static struct vfsconf fsname ## _vfsconf = { \
480 &vfsops, \
481 #fsname, \
482 -1, \
483 0, \
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484 flags, \
485 NULL \
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486 }; \
487 static moduledata_t fsname ## _mod = { \
488 #fsname, \
489 vfs_modevent, \
490 & fsname ## _vfsconf \
491 }; \
492 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
493
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494#endif
495
496#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
497
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498#include <net/radix.h>
499
0a9108eb 500#define AF_MAX 34 /* XXX */
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501
502/*
503 * Network address lookup element
504 */
505struct netcred {
506 struct radix_node netc_rnodes[2];
507 int netc_exflags;
508 struct ucred netc_anon;
509};
510
511/*
512 * Network export information
513 */
514struct netexport {
515 struct netcred ne_defexported; /* Default export */
516 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
517};
518
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519#endif
520
521#ifdef _KERNEL
522
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523extern char *mountrootfsname;
524
525/*
526 * exported vnode operations
527 */
acde96db 528int dounmount (struct mount *, int);
984263bc 529int vfs_setpublicfs /* set publicly exported fs */
1aa89f17 530 (struct mount *, struct netexport *, const struct export_args *);
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531int vfs_lock (struct mount *); /* lock a vfs */
532void vfs_msync (struct mount *, int);
533void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 534int vfs_busy (struct mount *, int);
6bdbb368 535void vfs_bufstats(void);
984263bc 536int vfs_export /* process mount export info */
1aa89f17 537 (struct mount *, struct netexport *, const struct export_args *);
984263bc 538struct netcred *vfs_export_lookup /* lookup host in fs export list */
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539 (struct mount *, struct netexport *, struct sockaddr *);
540int vfs_allocate_syncvnode (struct mount *);
541void vfs_getnewfsid (struct mount *);
b13267a5 542cdev_t vfs_getrootfsid (struct mount *);
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543struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
544int vfs_modevent (module_t, int, void *);
545int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
546int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 547void vfs_unbusy (struct mount *);
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548void vfs_unmountall (void);
549int vfs_register (struct vfsconf *);
550int vfs_unregister (struct vfsconf *);
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551extern struct nfs_public nfs_pub;
552
553/*
554 * Declarations for these vfs default operations are located in
555 * kern/vfs_default.c, they should be used instead of making "dummy"
556 * functions or casting entries in the VFS op table to "enopnotsupp()".
557 */
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558vfs_start_t vfs_stdstart;
559vfs_mount_t vfs_stdmount;
560vfs_unmount_t vfs_stdunmount;
561vfs_root_t vfs_stdroot;
562vfs_quotactl_t vfs_stdquotactl;
563vfs_statfs_t vfs_stdstatfs;
d9fad06e 564vfs_statvfs_t vfs_stdstatvfs;
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565vfs_sync_t vfs_stdsync;
566vfs_sync_t vfs_stdnosync;
567vfs_vget_t vfs_stdvget;
568vfs_fhtovp_t vfs_stdfhtovp;
569vfs_checkexp_t vfs_stdcheckexp;
570vfs_vptofh_t vfs_stdvptofh;
571vfs_init_t vfs_stdinit;
572vfs_uninit_t vfs_stduninit;
acde96db 573vfs_extattrctl_t vfs_stdextattrctl;
43c45e8f 574
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575struct vop_access_args;
576int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
fb356552 577 mode_t ino_mode, u_int32_t ino_flags);
1399fa3b 578int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags,
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579 uid_t uid, struct ucred *cred);
580uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid,
581 struct ucred *cred, mode_t *modep);
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582int vop_helper_chmod(struct vnode *vp, mode_t new_mode, struct ucred *cred,
583 uid_t cur_uid, gid_t cur_gid, mode_t *cur_modep);
584int vop_helper_chown(struct vnode *vp, uid_t new_uid, gid_t new_gid,
585 struct ucred *cred,
586 uid_t *cur_uidp, gid_t *cur_gidp, mode_t *cur_modep);
1399fa3b 587
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588void add_bio_ops(struct bio_ops *ops);
589void rem_bio_ops(struct bio_ops *ops);
9340415c 590
2281065e 591int journal_mountctl(struct vop_mountctl_args *ap);
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592void journal_remove_all_journals(struct mount *mp, int flags);
593
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594void mountlist_insert(struct mount *, int);
595int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
596struct mount *mountlist_boot_getfirst(void);
597void mountlist_remove(struct mount *mp);
598int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
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599
600#else /* !_KERNEL */
601
602#include <sys/cdefs.h>
603
604__BEGIN_DECLS
b153f746 605int fstatfs (int, struct statfs *);
d9fad06e 606int fstatvfs (int, struct statvfs *);
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607int getfh (const char *, fhandle_t *);
608int getfsstat (struct statfs *, long, int);
00fe9d48 609int getvfsstat (struct statfs *, struct statvfs *, long, int);
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610int getmntinfo (struct statfs **, int);
611int mount (const char *, const char *, int, void *);
612int statfs (const char *, struct statfs *);
d9fad06e 613int statvfs (const char *, struct statvfs *);
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614int unmount (const char *, int);
615int fhopen (const struct fhandle *, int);
616int fhstat (const struct fhandle *, struct stat *);
617int fhstatfs (const struct fhandle *, struct statfs *);
d9fad06e 618int fhstatvfs (const struct fhandle *, struct statvfs *);
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619
620/* C library stuff */
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621void endvfsent (void);
622struct ovfsconf *getvfsbyname (const char *);
623struct ovfsconf *getvfsbytype (int);
624struct ovfsconf *getvfsent (void);
984263bc 625#define getvfsbyname new_getvfsbyname
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626int new_getvfsbyname (const char *, struct vfsconf *);
627void setvfsent (int);
628int vfsisloadable (const char *);
629int vfsload (const char *);
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630__END_DECLS
631
632#endif /* _KERNEL */
633
634#endif /* !_SYS_MOUNT_H_ */
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