Call ifnet.if_output() in netisr0, so it executes in a controlled enviroment.
[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 $
9b42cabe 35 * $DragonFly: src/sys/sys/mount.h,v 1.46 2008/07/07 22:02:10 nant 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/*
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73 * File identifier. These are unique per filesystem on a single machine.
74 *
75 * fix_ext is also used by HAMMER.
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76 */
77#define MAXFIDSZ 16
78
79struct fid {
80 u_short fid_len; /* length of data in bytes */
3e3a527f 81 u_short fid_ext; /* extended data */
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82 char fid_data[MAXFIDSZ]; /* data (variable length) */
83};
84
85/*
86 * file system statistics
87 */
88
89#define MFSNAMELEN 16 /* length of fs type name, including null */
984263bc 90#define MNAMELEN 80 /* length of buffer for returned name */
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91
92struct statfs {
93 long f_spare2; /* placeholder */
94 long f_bsize; /* fundamental file system block size */
95 long f_iosize; /* optimal transfer block size */
96 long f_blocks; /* total data blocks in file system */
97 long f_bfree; /* free blocks in fs */
98 long f_bavail; /* free blocks avail to non-superuser */
99 long f_files; /* total file nodes in file system */
100 long f_ffree; /* free file nodes in fs */
101 fsid_t f_fsid; /* file system id */
102 uid_t f_owner; /* user that mounted the filesystem */
103 int f_type; /* type of filesystem */
104 int f_flags; /* copy of mount exported flags */
105 long f_syncwrites; /* count of sync writes since mount */
106 long f_asyncwrites; /* count of async writes since mount */
107 char f_fstypename[MFSNAMELEN]; /* fs type name */
108 char f_mntonname[MNAMELEN]; /* directory on which mounted */
109 long f_syncreads; /* count of sync reads since mount */
110 long f_asyncreads; /* count of async reads since mount */
111 short f_spares1; /* unused spare */
112 char f_mntfromname[MNAMELEN];/* mounted filesystem */
113 short f_spares2; /* unused spare */
114 long f_spare[2]; /* unused spare */
115};
116
ec12abe0 117#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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118
119/*
120 * bio_ops are associated with the mount structure and used in conjuction
121 * with the b_dep field in a buffer. Currently softupdates and HAMMER
122 * utilize this field.
123 */
124struct buf;
125
126struct bio_ops {
127 TAILQ_ENTRY(bio_ops) entry;
128 void (*io_start) (struct buf *);
129 void (*io_complete) (struct buf *);
130 void (*io_deallocate) (struct buf *);
131 int (*io_fsync) (struct vnode *);
132 int (*io_sync) (struct mount *);
133 void (*io_movedeps) (struct buf *, struct buf *);
134 int (*io_countdeps) (struct buf *, int);
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135 int (*io_checkread) (struct buf *);
136 int (*io_checkwrite) (struct buf *);
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137};
138
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139/*
140 * Structure per mounted file system. Each mounted file system has an
141 * array of operations and an instance record. The file systems are
142 * put on a doubly linked list.
143 *
144 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
145 * are linked into mnt_nvnodelist. At some point in the near future the
146 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
147 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
148 * list. Filesystem kld's syncing code should remain compatible since
149 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 150 *
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151 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
152 * only take namecache pointers will not be able to find their operations
153 * vector via namecache->nc_mount.
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154 */
155TAILQ_HEAD(vnodelst, vnode);
2281065e 156TAILQ_HEAD(journallst, journal);
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157
158struct mount {
159 TAILQ_ENTRY(mount) mnt_list; /* mount list */
160 struct vfsops *mnt_op; /* operations on fs */
161 struct vfsconf *mnt_vfc; /* configuration info */
1d505369 162 void *mnt_unused01;
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163 struct vnode *mnt_syncer; /* syncer vnode */
164 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
165 struct lock mnt_lock; /* mount structure lock */
166 int mnt_flag; /* flags shared with user */
167 int mnt_kern_flag; /* kernel only flags */
168 int mnt_maxsymlinklen; /* max size of short symlink */
169 struct statfs mnt_stat; /* cache of filesystem stats */
d9fad06e 170 struct statvfs mnt_vstat; /* extended stats */
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171 qaddr_t mnt_data; /* private data */
172 time_t mnt_time; /* last time written*/
173 u_int mnt_iosize_max; /* max IO request size */
174 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
175 int mnt_nvnodelistsize; /* # of vnodes on this mount */
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176
177 /*
178 * ops vectors have a fixed stacking order. All primary calls run
179 * through mnt_vn_ops. This field is typically assigned to
180 * mnt_vn_norm_ops. If journaling has been enabled this field is
181 * usually assigned to mnt_vn_journal_ops.
182 */
183 struct vop_ops *mnt_vn_use_ops; /* current ops set */
184
185 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
186 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
187 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
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188 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
189 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
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190 struct nchandle mnt_ncmountpt; /* mount point */
191 struct nchandle mnt_ncmounton; /* mounted on */
192 int mnt_refs; /* nchandle references */
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193
194 struct journallst mnt_jlist; /* list of active journals */
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195 u_int8_t *mnt_jbitmap; /* streamid bitmap */
196 int16_t mnt_streamid; /* last streamid */
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197
198 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
984263bc 199};
2281065e 200
ec12abe0 201#endif /* _KERNEL || _KERNEL_STRUCTURES */
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202
203/*
204 * User specifiable flags.
205 */
206#define MNT_RDONLY 0x00000001 /* read only filesystem */
207#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
208#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
209#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
210#define MNT_NODEV 0x00000010 /* don't interpret special files */
211#define MNT_UNION 0x00000020 /* union with underlying filesystem */
212#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
213#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
214#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
215#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
216#define MNT_NOATIME 0x10000000 /* disable update of file access time */
217#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
218#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
219
220/*
221 * NFS export related mount flags.
222 */
223#define MNT_EXRDONLY 0x00000080 /* exported read only */
224#define MNT_EXPORTED 0x00000100 /* file system is exported */
225#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
226#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
227#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
228#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
229
230/*
231 * Flags set by internal operations,
232 * but visible to the user.
233 * XXX some of these are not quite right.. (I've never seen the root flag set)
234 */
235#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
236#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
237#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
238#define MNT_USER 0x00008000 /* mounted by a user */
239#define MNT_IGNORE 0x00800000 /* do not show entry in df */
240
241/*
242 * Mask of flags that are visible to statfs()
243 * XXX I think that this could now become (~(MNT_CMDFLAGS))
244 * but the 'mount' program may need changing to handle this.
245 */
246#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
247 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
248 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
249 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
250 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
251 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
252 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
253 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC )
254/*
255 * External filesystem command modifier flags.
256 * Unmount can use the MNT_FORCE flag.
257 * XXX These are not STATES and really should be somewhere else.
258 */
259#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
260#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
261#define MNT_RELOAD 0x00040000 /* reload filesystem data */
262#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
263#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
264/*
265 * Internal filesystem control flags stored in mnt_kern_flag.
266 *
267 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
268 * past the mount point. This keeps the subtree stable during mounts
269 * and unmounts.
270 *
271 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
272 * dounmount() is still waiting to lock the mountpoint. This allows
273 * the filesystem to cancel operations that might otherwise deadlock
274 * with the unmount attempt (used by NFS).
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275 *
276 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
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277 */
278#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
28623bf9 279#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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280#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
281#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
282#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 283#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
5dc91765 284#define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
984263bc 285
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286/*
287 * mountlist_*() defines
288 */
289#define MNTSCAN_FORWARD 0x0001
290#define MNTSCAN_REVERSE 0x0002
291#define MNTSCAN_NOBUSY 0x0004
292
293#define MNTINS_FIRST 0x0001
294#define MNTINS_LAST 0x0002
295
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296/*
297 * Sysctl CTL_VFS definitions.
298 *
299 * Second level identifier specifies which filesystem. Second level
300 * identifier VFS_VFSCONF returns information about all filesystems.
301 * Second level identifier VFS_GENERIC is non-terminal.
302 */
303#define VFS_VFSCONF 0 /* get configured filesystems */
304#define VFS_GENERIC 0 /* generic filesystem information */
305/*
306 * Third level identifiers for VFS_GENERIC are given below; third
307 * level identifiers for specific filesystems are given in their
308 * mount specific header files.
309 */
310#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
311#define VFS_CONF 2 /* struct: vfsconf for filesystem given
312 as next argument */
313
314/*
315 * Flags for various system call interfaces.
316 *
317 * waitfor flags to vfs_sync() and getfsstat()
318 */
319#define MNT_WAIT 1 /* synchronously wait for I/O to complete */
320#define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
6bae6177 321#define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
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322
323/*
324 * Generic file handle
325 */
326struct fhandle {
327 fsid_t fh_fsid; /* File system id of mount point */
328 struct fid fh_fid; /* File sys specific id */
329};
330typedef struct fhandle fhandle_t;
331
332/*
333 * Export arguments for local filesystem mount calls.
334 */
335struct export_args {
336 int ex_flags; /* export related flags */
337 uid_t ex_root; /* mapping for root uid */
338 struct ucred ex_anon; /* mapping for anonymous user */
339 struct sockaddr *ex_addr; /* net address to which exported */
340 int ex_addrlen; /* and the net address length */
341 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
342 int ex_masklen; /* and the smask length */
343 char *ex_indexfile; /* index file for WebNFS URLs */
344};
345
346/*
347 * Structure holding information for a publicly exported filesystem
348 * (WebNFS). Currently the specs allow just for one such filesystem.
349 */
350struct nfs_public {
351 int np_valid; /* Do we hold valid information */
352 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
353 struct mount *np_mount; /* Mountpoint of exported fs */
354 char *np_index; /* Index file */
355};
356
357/*
358 * Filesystem configuration information. One of these exists for each
359 * type of filesystem supported by the kernel. These are searched at
360 * mount time to identify the requested filesystem.
361 */
362struct vfsconf {
363 struct vfsops *vfc_vfsops; /* filesystem operations vector */
364 char vfc_name[MFSNAMELEN]; /* filesystem type name */
365 int vfc_typenum; /* historic filesystem type number */
366 int vfc_refcount; /* number mounted of this type */
367 int vfc_flags; /* permanent flags */
368 struct vfsconf *vfc_next; /* next in list */
369};
370
371struct ovfsconf {
372 void *vfc_vfsops;
373 char vfc_name[32];
374 int vfc_index;
375 int vfc_refcount;
376 int vfc_flags;
377};
378
379/*
380 * NB: these flags refer to IMPLEMENTATION properties, not properties of
381 * any actual mounts; i.e., it does not make sense to change the flags.
382 */
383#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
384#define VFCF_NETWORK 0x00020000 /* may get data over the network */
385#define VFCF_READONLY 0x00040000 /* writes are not implemented */
386#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
387#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
388#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
389
390#ifdef _KERNEL
391
392#ifdef MALLOC_DECLARE
393MALLOC_DECLARE(M_MOUNT);
394#endif
395extern int maxvfsconf; /* highest defined filesystem type */
396extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
397extern struct vfsconf *vfsconf; /* head of list of filesystem types */
398
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399#endif
400
401#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
402
403TAILQ_HEAD(mntlist, mount); /* struct mntlist */
404
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405/*
406 * Operations supported on mounted file system.
407 */
408#ifdef __STDC__
21739618 409struct nlookupdata;
fad57d0e 410struct nlookupdata;
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411struct mbuf;
412#endif
413
43c45e8f 414typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
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415 struct ucred *cred);
416typedef int vfs_start_t(struct mount *mp, int flags);
417typedef int vfs_unmount_t(struct mount *mp, int mntflags);
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418typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
419typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 420 struct ucred *cred);
43c45e8f 421typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 422 struct ucred *cred);
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423typedef int vfs_statvfs_t(struct mount *mp, struct statvfs *sbp,
424 struct ucred *cred);
87de5057 425typedef int vfs_sync_t(struct mount *mp, int waitfor);
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426typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp);
427typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp,
b153f746 428 struct vnode **vpp);
43c45e8f 429typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 430 int *extflagsp, struct ucred **credanonp);
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431typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
432typedef int vfs_init_t(struct vfsconf *);
433typedef int vfs_uninit_t(struct vfsconf *);
434typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname,
acde96db 435 caddr_t arg, struct ucred *cred);
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436
437struct vfsops {
438 vfs_mount_t *vfs_mount;
439 vfs_start_t *vfs_start;
440 vfs_unmount_t *vfs_unmount;
441 vfs_root_t *vfs_root;
442 vfs_quotactl_t *vfs_quotactl;
443 vfs_statfs_t *vfs_statfs;
444 vfs_sync_t *vfs_sync;
445 vfs_vget_t *vfs_vget;
446 vfs_fhtovp_t *vfs_fhtovp;
447 vfs_checkexp_t *vfs_checkexp;
448 vfs_vptofh_t *vfs_vptofh;
449 vfs_init_t *vfs_init;
450 vfs_uninit_t *vfs_uninit;
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451 vfs_extattrctl_t *vfs_extattrctl;
452 vfs_statvfs_t *vfs_statvfs;
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453};
454
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455#define VFS_MOUNT(MP, PATH, DATA, CRED) \
456 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED)
457#define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS)
458#define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE)
984263bc 459#define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
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460#define VFS_QUOTACTL(MP,C,U,A,CRED) \
461 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED)
462#define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED)
d9fad06e 463#define VFS_STATVFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statvfs)(MP, SBP, CRED)
87de5057 464#define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT)
984263bc 465#define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
acde96db 466#define VFS_FHTOVP(MP, FIDP, VPP) \
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467 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
468#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
469#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
470 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
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471#define VFS_EXTATTRCTL(MP, C, N, A, CRED) \
472 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED)
984263bc 473
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474#endif
475
476#ifdef _KERNEL
477
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478#include <sys/module.h>
479
480#define VFS_SET(vfsops, fsname, flags) \
481 static struct vfsconf fsname ## _vfsconf = { \
482 &vfsops, \
483 #fsname, \
484 -1, \
485 0, \
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486 flags, \
487 NULL \
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488 }; \
489 static moduledata_t fsname ## _mod = { \
490 #fsname, \
491 vfs_modevent, \
492 & fsname ## _vfsconf \
493 }; \
494 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
495
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496#endif
497
498#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
499
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500#include <net/radix.h>
501
9b42cabe 502#define AF_MAX 35 /* XXX */
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503
504/*
505 * Network address lookup element
506 */
507struct netcred {
508 struct radix_node netc_rnodes[2];
509 int netc_exflags;
510 struct ucred netc_anon;
511};
512
513/*
514 * Network export information
515 */
516struct netexport {
517 struct netcred ne_defexported; /* Default export */
518 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
519};
520
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521#endif
522
523#ifdef _KERNEL
524
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525extern char *mountrootfsname;
526
527/*
528 * exported vnode operations
529 */
acde96db 530int dounmount (struct mount *, int);
984263bc 531int vfs_setpublicfs /* set publicly exported fs */
1aa89f17 532 (struct mount *, struct netexport *, const struct export_args *);
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533int vfs_lock (struct mount *); /* lock a vfs */
534void vfs_msync (struct mount *, int);
535void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 536int vfs_busy (struct mount *, int);
6bdbb368 537void vfs_bufstats(void);
984263bc 538int vfs_export /* process mount export info */
1aa89f17 539 (struct mount *, struct netexport *, const struct export_args *);
984263bc 540struct netcred *vfs_export_lookup /* lookup host in fs export list */
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541 (struct mount *, struct netexport *, struct sockaddr *);
542int vfs_allocate_syncvnode (struct mount *);
543void vfs_getnewfsid (struct mount *);
b13267a5 544cdev_t vfs_getrootfsid (struct mount *);
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545struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
546int vfs_modevent (module_t, int, void *);
547int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
548int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 549void vfs_unbusy (struct mount *);
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550void vfs_unmountall (void);
551int vfs_register (struct vfsconf *);
552int vfs_unregister (struct vfsconf *);
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553extern struct nfs_public nfs_pub;
554
555/*
556 * Declarations for these vfs default operations are located in
557 * kern/vfs_default.c, they should be used instead of making "dummy"
558 * functions or casting entries in the VFS op table to "enopnotsupp()".
559 */
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560vfs_start_t vfs_stdstart;
561vfs_mount_t vfs_stdmount;
562vfs_unmount_t vfs_stdunmount;
563vfs_root_t vfs_stdroot;
564vfs_quotactl_t vfs_stdquotactl;
565vfs_statfs_t vfs_stdstatfs;
d9fad06e 566vfs_statvfs_t vfs_stdstatvfs;
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567vfs_sync_t vfs_stdsync;
568vfs_sync_t vfs_stdnosync;
569vfs_vget_t vfs_stdvget;
570vfs_fhtovp_t vfs_stdfhtovp;
571vfs_checkexp_t vfs_stdcheckexp;
572vfs_vptofh_t vfs_stdvptofh;
573vfs_init_t vfs_stdinit;
574vfs_uninit_t vfs_stduninit;
acde96db 575vfs_extattrctl_t vfs_stdextattrctl;
43c45e8f 576
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577struct vop_access_args;
578int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
fb356552 579 mode_t ino_mode, u_int32_t ino_flags);
1399fa3b 580int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags,
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581 uid_t uid, struct ucred *cred);
582uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid,
583 struct ucred *cred, mode_t *modep);
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584int vop_helper_chmod(struct vnode *vp, mode_t new_mode, struct ucred *cred,
585 uid_t cur_uid, gid_t cur_gid, mode_t *cur_modep);
586int vop_helper_chown(struct vnode *vp, uid_t new_uid, gid_t new_gid,
587 struct ucred *cred,
588 uid_t *cur_uidp, gid_t *cur_gidp, mode_t *cur_modep);
1399fa3b 589
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590void add_bio_ops(struct bio_ops *ops);
591void rem_bio_ops(struct bio_ops *ops);
9340415c 592
2281065e 593int journal_mountctl(struct vop_mountctl_args *ap);
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594void journal_remove_all_journals(struct mount *mp, int flags);
595
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596void mountlist_insert(struct mount *, int);
597int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
598struct mount *mountlist_boot_getfirst(void);
599void mountlist_remove(struct mount *mp);
600int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
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601
602#else /* !_KERNEL */
603
604#include <sys/cdefs.h>
605
606__BEGIN_DECLS
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607int fstatfs (int, struct statfs *);
608int getfh (const char *, fhandle_t *);
609int getfsstat (struct statfs *, long, int);
610int getmntinfo (struct statfs **, int);
0e735c8f 611int getmntvinfo (struct statfs **, struct statvfs **, int);
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612int mount (const char *, const char *, int, void *);
613int statfs (const char *, struct statfs *);
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 *);
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618
619/* C library stuff */
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620void endvfsent (void);
621struct ovfsconf *getvfsbyname (const char *);
622struct ovfsconf *getvfsbytype (int);
623struct ovfsconf *getvfsent (void);
984263bc 624#define getvfsbyname new_getvfsbyname
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625int new_getvfsbyname (const char *, struct vfsconf *);
626void setvfsent (int);
627int vfsisloadable (const char *);
628int vfsload (const char *);
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629__END_DECLS
630
631#endif /* _KERNEL */
632
633#endif /* !_SYS_MOUNT_H_ */
ec12abe0 634