kernel - Run AHCI and SILI disk drivers MPSAFE
[dragonfly.git] / sys / sys / mount.h
CommitLineData
984263bc
MD
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 $
67863d04 35 * $DragonFly: src/sys/sys/mount.h,v 1.47 2008/09/17 21:44:19 dillon Exp $
984263bc
MD
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
03d6a592
MD
49#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
50#ifndef _SYS_QUEUE_H_
984263bc 51#include <sys/queue.h>
03d6a592
MD
52#endif
53#ifndef _SYS_LOCK_H_
984263bc
MD
54#include <sys/lock.h>
55#endif
28623bf9
MD
56#ifndef _SYS_NAMECACHE_H_
57#include <sys/namecache.h>
58#endif
d9fad06e
MD
59#ifndef _SYS_STATVFS_H_
60#include <sys/statvfs.h>
61#endif
aac0aabd
MD
62#ifndef _SYS_THREAD_H_
63#include <sys/thread.h>
64#endif
03d6a592 65#endif
984263bc 66
dadab5e9 67struct thread;
2281065e 68struct journal;
0961aa92 69struct vop_ops;
2281065e 70struct vop_mountctl_args;
0e735c8f 71struct statvfs;
dadab5e9 72
984263bc
MD
73typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
74
75/*
3e3a527f
MD
76 * File identifier. These are unique per filesystem on a single machine.
77 *
78 * fix_ext is also used by HAMMER.
984263bc
MD
79 */
80#define MAXFIDSZ 16
81
82struct fid {
83 u_short fid_len; /* length of data in bytes */
3e3a527f 84 u_short fid_ext; /* extended data */
984263bc
MD
85 char fid_data[MAXFIDSZ]; /* data (variable length) */
86};
87
88/*
89 * file system statistics
90 */
91
92#define MFSNAMELEN 16 /* length of fs type name, including null */
984263bc 93#define MNAMELEN 80 /* length of buffer for returned name */
984263bc
MD
94
95struct statfs {
96 long f_spare2; /* placeholder */
97 long f_bsize; /* fundamental file system block size */
98 long f_iosize; /* optimal transfer block size */
99 long f_blocks; /* total data blocks in file system */
100 long f_bfree; /* free blocks in fs */
101 long f_bavail; /* free blocks avail to non-superuser */
102 long f_files; /* total file nodes in file system */
103 long f_ffree; /* free file nodes in fs */
104 fsid_t f_fsid; /* file system id */
105 uid_t f_owner; /* user that mounted the filesystem */
106 int f_type; /* type of filesystem */
107 int f_flags; /* copy of mount exported flags */
108 long f_syncwrites; /* count of sync writes since mount */
109 long f_asyncwrites; /* count of async writes since mount */
110 char f_fstypename[MFSNAMELEN]; /* fs type name */
111 char f_mntonname[MNAMELEN]; /* directory on which mounted */
112 long f_syncreads; /* count of sync reads since mount */
113 long f_asyncreads; /* count of async reads since mount */
114 short f_spares1; /* unused spare */
115 char f_mntfromname[MNAMELEN];/* mounted filesystem */
116 short f_spares2; /* unused spare */
117 long f_spare[2]; /* unused spare */
118};
119
ec12abe0 120#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
408357d8
MD
121
122/*
123 * bio_ops are associated with the mount structure and used in conjuction
124 * with the b_dep field in a buffer. Currently softupdates and HAMMER
125 * utilize this field.
126 */
127struct buf;
128
129struct bio_ops {
130 TAILQ_ENTRY(bio_ops) entry;
131 void (*io_start) (struct buf *);
132 void (*io_complete) (struct buf *);
133 void (*io_deallocate) (struct buf *);
134 int (*io_fsync) (struct vnode *);
135 int (*io_sync) (struct mount *);
136 void (*io_movedeps) (struct buf *, struct buf *);
137 int (*io_countdeps) (struct buf *, int);
27bc0cb1
MD
138 int (*io_checkread) (struct buf *);
139 int (*io_checkwrite) (struct buf *);
408357d8
MD
140};
141
984263bc
MD
142/*
143 * Structure per mounted file system. Each mounted file system has an
144 * array of operations and an instance record. The file systems are
145 * put on a doubly linked list.
146 *
147 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
148 * are linked into mnt_nvnodelist. At some point in the near future the
149 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
150 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
151 * list. Filesystem kld's syncing code should remain compatible since
152 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
41a01a4d 153 *
fad57d0e
MD
154 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
155 * only take namecache pointers will not be able to find their operations
156 * vector via namecache->nc_mount.
aac0aabd
MD
157 *
158 * MPSAFE NOTES: mnt_lock interlocks mounting and unmounting operations.
159 *
160 * mnt_token interlocks operations which adjust the mount
161 * structure and will also be held through VFS operations
162 * for VFSes not flagged MPSAFE.
984263bc
MD
163 */
164TAILQ_HEAD(vnodelst, vnode);
2281065e 165TAILQ_HEAD(journallst, journal);
984263bc
MD
166
167struct mount {
168 TAILQ_ENTRY(mount) mnt_list; /* mount list */
169 struct vfsops *mnt_op; /* operations on fs */
170 struct vfsconf *mnt_vfc; /* configuration info */
4b5bbb78 171 long mnt_namecache_gen; /* ++ to clear negative hits */
984263bc
MD
172 struct vnode *mnt_syncer; /* syncer vnode */
173 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
174 struct lock mnt_lock; /* mount structure lock */
175 int mnt_flag; /* flags shared with user */
176 int mnt_kern_flag; /* kernel only flags */
177 int mnt_maxsymlinklen; /* max size of short symlink */
178 struct statfs mnt_stat; /* cache of filesystem stats */
d9fad06e 179 struct statvfs mnt_vstat; /* extended stats */
984263bc
MD
180 qaddr_t mnt_data; /* private data */
181 time_t mnt_time; /* last time written*/
182 u_int mnt_iosize_max; /* max IO request size */
183 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
184 int mnt_nvnodelistsize; /* # of vnodes on this mount */
6ddb7618
MD
185
186 /*
187 * ops vectors have a fixed stacking order. All primary calls run
188 * through mnt_vn_ops. This field is typically assigned to
189 * mnt_vn_norm_ops. If journaling has been enabled this field is
190 * usually assigned to mnt_vn_journal_ops.
191 */
192 struct vop_ops *mnt_vn_use_ops; /* current ops set */
193
194 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
195 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
196 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
0961aa92
MD
197 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
198 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
28623bf9
MD
199 struct nchandle mnt_ncmountpt; /* mount point */
200 struct nchandle mnt_ncmounton; /* mounted on */
201 int mnt_refs; /* nchandle references */
aac0aabd 202 struct lwkt_token mnt_token; /* token lock if not MPSAFE */
2281065e 203 struct journallst mnt_jlist; /* list of active journals */
797e4fe9
MD
204 u_int8_t *mnt_jbitmap; /* streamid bitmap */
205 int16_t mnt_streamid; /* last streamid */
408357d8
MD
206
207 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
984263bc 208};
2281065e 209
ec12abe0 210#endif /* _KERNEL || _KERNEL_STRUCTURES */
984263bc
MD
211
212/*
213 * User specifiable flags.
214 */
215#define MNT_RDONLY 0x00000001 /* read only filesystem */
216#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
217#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
218#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
219#define MNT_NODEV 0x00000010 /* don't interpret special files */
220#define MNT_UNION 0x00000020 /* union with underlying filesystem */
221#define MNT_ASYNC 0x00000040 /* file system written asynchronously */
222#define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
223#define MNT_SOFTDEP 0x00200000 /* soft updates being done */
224#define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
225#define MNT_NOATIME 0x10000000 /* disable update of file access time */
226#define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
227#define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
228
229/*
230 * NFS export related mount flags.
231 */
232#define MNT_EXRDONLY 0x00000080 /* exported read only */
233#define MNT_EXPORTED 0x00000100 /* file system is exported */
234#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
235#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
236#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
237#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
238
239/*
240 * Flags set by internal operations,
241 * but visible to the user.
242 * XXX some of these are not quite right.. (I've never seen the root flag set)
243 */
244#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
245#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
246#define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
247#define MNT_USER 0x00008000 /* mounted by a user */
248#define MNT_IGNORE 0x00800000 /* do not show entry in df */
249
250/*
251 * Mask of flags that are visible to statfs()
252 * XXX I think that this could now become (~(MNT_CMDFLAGS))
253 * but the 'mount' program may need changing to handle this.
254 */
255#define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
256 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
257 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
258 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
259 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
260 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
261 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
262 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC )
263/*
264 * External filesystem command modifier flags.
265 * Unmount can use the MNT_FORCE flag.
266 * XXX These are not STATES and really should be somewhere else.
267 */
268#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
269#define MNT_DELEXPORT 0x00020000 /* delete export host lists */
270#define MNT_RELOAD 0x00040000 /* reload filesystem data */
271#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
272#define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
273/*
274 * Internal filesystem control flags stored in mnt_kern_flag.
275 *
276 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
277 * past the mount point. This keeps the subtree stable during mounts
278 * and unmounts.
279 *
280 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
281 * dounmount() is still waiting to lock the mountpoint. This allows
282 * the filesystem to cancel operations that might otherwise deadlock
283 * with the unmount attempt (used by NFS).
5dc91765
MD
284 *
285 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
984263bc
MD
286 */
287#define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
aac0aabd 288#define MNTK_MPSAFE 0x00010000 /* call vops without mnt_token lock */
2247fe02
MD
289#define MNTK_RD_MPSAFE 0x00020000 /* vop_read is MPSAFE */
290#define MNTK_WR_MPSAFE 0x00040000 /* vop_write is MPSAFE */
291#define MNTK_GA_MPSAFE 0x00080000 /* vop_getattr is MPSAFE */
292#define MNTK_IN_MPSAFE 0x00100000 /* vop_inactive is MPSAFE */
7a2de9a4 293#define MNTK_SG_MPSAFE 0x00200000 /* vop_strategy is MPSAFE */
28623bf9 294#define MNTK_NCALIASED 0x00800000 /* namecached aliased */
984263bc
MD
295#define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
296#define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
297#define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
66a1ddf5 298#define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
5dc91765 299#define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
2bc7505b 300#define MNTK_NOMSYNC 0x20000000 /* used by tmpfs */
984263bc 301
8801b30b
MD
302#define MNTK_ALL_MPSAFE (MNTK_MPSAFE | MNTK_RD_MPSAFE | MNTK_WR_MPSAFE | \
303 MNTK_GA_MPSAFE | MNTK_IN_MPSAFE | MNTK_SG_MPSAFE)
304
861905fb
MD
305/*
306 * mountlist_*() defines
307 */
308#define MNTSCAN_FORWARD 0x0001
309#define MNTSCAN_REVERSE 0x0002
310#define MNTSCAN_NOBUSY 0x0004
311
312#define MNTINS_FIRST 0x0001
313#define MNTINS_LAST 0x0002
314
984263bc
MD
315/*
316 * Sysctl CTL_VFS definitions.
317 *
318 * Second level identifier specifies which filesystem. Second level
319 * identifier VFS_VFSCONF returns information about all filesystems.
320 * Second level identifier VFS_GENERIC is non-terminal.
321 */
322#define VFS_VFSCONF 0 /* get configured filesystems */
323#define VFS_GENERIC 0 /* generic filesystem information */
324/*
325 * Third level identifiers for VFS_GENERIC are given below; third
326 * level identifiers for specific filesystems are given in their
327 * mount specific header files.
328 */
329#define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
330#define VFS_CONF 2 /* struct: vfsconf for filesystem given
331 as next argument */
332
2247fe02
MD
333/*
334 * VFS MPLOCK helper.
335 */
3b998fa9 336#define VFS_MPLOCK_DECLARE int xlock_mpsafe
2247fe02
MD
337
338#define VFS_MPLOCK1(mp) VFS_MPLOCK_FLAG(mp, MNTK_MPSAFE)
339
340#define VFS_MPLOCK2(mp) \
341 do { \
342 if (xlock_mpsafe) { \
343 get_mplock(); /* TEMPORARY */ \
3b998fa9 344 lwkt_gettoken(&mp->mnt_token); \
2247fe02
MD
345 xlock_mpsafe = 0; \
346 } \
347 } while(0)
348
349#define VFS_MPLOCK_FLAG(mp, flag) \
350 do { \
351 if (mp->mnt_kern_flag & flag) { \
352 xlock_mpsafe = 1; \
353 } else { \
354 get_mplock(); /* TEMPORARY */ \
3b998fa9 355 lwkt_gettoken(&mp->mnt_token); \
2247fe02
MD
356 xlock_mpsafe = 0; \
357 } \
358 } while(0)
359
360#define VFS_MPUNLOCK(mp) \
361 do { \
362 if (xlock_mpsafe == 0) { \
3b998fa9 363 lwkt_reltoken(&mp->mnt_token); \
2247fe02
MD
364 rel_mplock(); /* TEMPORARY */ \
365 } \
366 } while(0)
367
984263bc
MD
368/*
369 * Flags for various system call interfaces.
370 *
371 * waitfor flags to vfs_sync() and getfsstat()
372 */
373#define MNT_WAIT 1 /* synchronously wait for I/O to complete */
374#define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
6bae6177 375#define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
984263bc 376
52174f71
MD
377#define VOP_FSYNC_SYSCALL 0x0001 /* from system call */
378
984263bc
MD
379/*
380 * Generic file handle
381 */
382struct fhandle {
383 fsid_t fh_fsid; /* File system id of mount point */
384 struct fid fh_fid; /* File sys specific id */
385};
386typedef struct fhandle fhandle_t;
387
388/*
389 * Export arguments for local filesystem mount calls.
390 */
391struct export_args {
392 int ex_flags; /* export related flags */
393 uid_t ex_root; /* mapping for root uid */
394 struct ucred ex_anon; /* mapping for anonymous user */
395 struct sockaddr *ex_addr; /* net address to which exported */
396 int ex_addrlen; /* and the net address length */
397 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
398 int ex_masklen; /* and the smask length */
399 char *ex_indexfile; /* index file for WebNFS URLs */
400};
401
402/*
403 * Structure holding information for a publicly exported filesystem
404 * (WebNFS). Currently the specs allow just for one such filesystem.
405 */
406struct nfs_public {
407 int np_valid; /* Do we hold valid information */
408 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
409 struct mount *np_mount; /* Mountpoint of exported fs */
410 char *np_index; /* Index file */
411};
412
413/*
414 * Filesystem configuration information. One of these exists for each
415 * type of filesystem supported by the kernel. These are searched at
416 * mount time to identify the requested filesystem.
417 */
e9b33526
MN
418#ifndef _SYS_QUEUE_H_
419#include <sys/queue.h>
420#endif
984263bc
MD
421struct vfsconf {
422 struct vfsops *vfc_vfsops; /* filesystem operations vector */
423 char vfc_name[MFSNAMELEN]; /* filesystem type name */
424 int vfc_typenum; /* historic filesystem type number */
425 int vfc_refcount; /* number mounted of this type */
426 int vfc_flags; /* permanent flags */
2613053d 427 STAILQ_ENTRY(vfsconf) vfc_next; /* next in list */
984263bc
MD
428};
429
430struct ovfsconf {
431 void *vfc_vfsops;
432 char vfc_name[32];
433 int vfc_index;
434 int vfc_refcount;
435 int vfc_flags;
436};
437
438/*
439 * NB: these flags refer to IMPLEMENTATION properties, not properties of
440 * any actual mounts; i.e., it does not make sense to change the flags.
441 */
442#define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
443#define VFCF_NETWORK 0x00020000 /* may get data over the network */
444#define VFCF_READONLY 0x00040000 /* writes are not implemented */
445#define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
446#define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
447#define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
448
449#ifdef _KERNEL
450
451#ifdef MALLOC_DECLARE
452MALLOC_DECLARE(M_MOUNT);
453#endif
984263bc 454extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
2613053d
MN
455
456struct vfsconf *vfsconf_find_by_name(const char *);
457struct vfsconf *vfsconf_find_by_typenum(int);
458int vfsconf_get_maxtypenum(void);
459int vfsconf_each(int (*)(struct vfsconf *, void *), void *);
984263bc 460
ec12abe0
MD
461#endif
462
463#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
464
465TAILQ_HEAD(mntlist, mount); /* struct mntlist */
466
984263bc
MD
467/*
468 * Operations supported on mounted file system.
469 */
470#ifdef __STDC__
21739618 471struct nlookupdata;
fad57d0e 472struct nlookupdata;
984263bc
MD
473struct mbuf;
474#endif
475
43c45e8f 476typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
acde96db
MD
477 struct ucred *cred);
478typedef int vfs_start_t(struct mount *mp, int flags);
479typedef int vfs_unmount_t(struct mount *mp, int mntflags);
43c45e8f
HP
480typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
481typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
acde96db 482 struct ucred *cred);
43c45e8f 483typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
acde96db 484 struct ucred *cred);
d9fad06e
MD
485typedef int vfs_statvfs_t(struct mount *mp, struct statvfs *sbp,
486 struct ucred *cred);
87de5057 487typedef int vfs_sync_t(struct mount *mp, int waitfor);
b9b0a6d0
MD
488typedef int vfs_vget_t(struct mount *mp, struct vnode *dvp,
489 ino_t ino, struct vnode **vpp);
67863d04
MD
490typedef int vfs_fhtovp_t(struct mount *mp, struct vnode *rootvp,
491 struct fid *fhp, struct vnode **vpp);
43c45e8f 492typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
b153f746 493 int *extflagsp, struct ucred **credanonp);
43c45e8f
HP
494typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
495typedef int vfs_init_t(struct vfsconf *);
496typedef int vfs_uninit_t(struct vfsconf *);
0f6997f9
MD
497typedef int vfs_extattrctl_t(struct mount *mp, int cmd, struct vnode *vp,
498 int attrnamespace, const char *attrname,
499 struct ucred *cred);
43c45e8f 500
aac0aabd
MD
501int vfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred);
502int vfs_start(struct mount *mp, int flags);
503int vfs_unmount(struct mount *mp, int mntflags);
504int vfs_root(struct mount *mp, struct vnode **vpp);
505int vfs_quotactl(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
506 struct ucred *cred);
507int vfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred);
508int vfs_statvfs(struct mount *mp, struct statvfs *sbp, struct ucred *cred);
509int vfs_sync(struct mount *mp, int waitfor);
510int vfs_vget(struct mount *mp, struct vnode *dvp,
511 ino_t ino, struct vnode **vpp);
512int vfs_fhtovp(struct mount *mp, struct vnode *rootvp,
513 struct fid *fhp, struct vnode **vpp);
514int vfs_checkexp(struct mount *mp, struct sockaddr *nam,
515 int *extflagsp, struct ucred **credanonp);
516int vfs_vptofh(struct vnode *vp, struct fid *fhp);
517int vfs_init(struct vfsconf *vfc);
518int vfs_uninit(struct vfsconf *vfc, struct vfsconf *vfsp);
0f6997f9
MD
519int vfs_extattrctl(struct mount *mp, int cmd, struct vnode *vp,
520 int attrnamespace, const char *attrname,
521 struct ucred *cred);
aac0aabd
MD
522
523
43c45e8f
HP
524struct vfsops {
525 vfs_mount_t *vfs_mount;
526 vfs_start_t *vfs_start;
527 vfs_unmount_t *vfs_unmount;
528 vfs_root_t *vfs_root;
529 vfs_quotactl_t *vfs_quotactl;
530 vfs_statfs_t *vfs_statfs;
531 vfs_sync_t *vfs_sync;
532 vfs_vget_t *vfs_vget;
533 vfs_fhtovp_t *vfs_fhtovp;
534 vfs_checkexp_t *vfs_checkexp;
535 vfs_vptofh_t *vfs_vptofh;
536 vfs_init_t *vfs_init;
537 vfs_uninit_t *vfs_uninit;
d9fad06e
MD
538 vfs_extattrctl_t *vfs_extattrctl;
539 vfs_statvfs_t *vfs_statvfs;
984263bc
MD
540};
541
aac0aabd
MD
542#define VFS_MOUNT(MP, PATH, DATA, CRED) \
543 vfs_mount(MP, PATH, DATA, CRED)
544#define VFS_START(MP, FLAGS) \
545 vfs_start(MP, FLAGS)
546#define VFS_UNMOUNT(MP, FORCE) \
547 vfs_unmount(MP, FORCE)
548#define VFS_ROOT(MP, VPP) \
549 vfs_root(MP, VPP)
550#define VFS_QUOTACTL(MP, C, U, A, CRED) \
551 vfs_quotactl(MP, C, U, A, CRED)
552#define VFS_STATFS(MP, SBP, CRED) \
553 vfs_statfs(MP, SBP, CRED)
554#define VFS_STATVFS(MP, SBP, CRED) \
555 vfs_statvfs(MP, SBP, CRED)
556#define VFS_SYNC(MP, WAIT) \
557 vfs_sync(MP, WAIT)
558#define VFS_VGET(MP, DVP, INO, VPP) \
559 vfs_vget(MP, DVP, INO, VPP)
67863d04 560#define VFS_FHTOVP(MP, ROOTVP, FIDP, VPP) \
aac0aabd
MD
561 vfs_fhtovp(MP, ROOTVP, FIDP, VPP)
562#define VFS_VPTOFH(VP, FIDP) \
563 vfs_vptofh(VP, FIDP)
564#define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
565 vfs_checkexp(MP, NAM, EXFLG, CRED)
0f6997f9
MD
566#define VFS_EXTATTRCTL(MP, C, FVP, NS, N, CRED) \
567 vfs_extattrctl(MP, C, FVP, NS, N, CRED)
984263bc 568
ec12abe0
MD
569#endif
570
571#ifdef _KERNEL
572
984263bc
MD
573#include <sys/module.h>
574
575#define VFS_SET(vfsops, fsname, flags) \
576 static struct vfsconf fsname ## _vfsconf = { \
577 &vfsops, \
578 #fsname, \
579 -1, \
580 0, \
58661e79 581 flags, \
37c1c8fc 582 { NULL }, \
984263bc
MD
583 }; \
584 static moduledata_t fsname ## _mod = { \
585 #fsname, \
586 vfs_modevent, \
587 & fsname ## _vfsconf \
588 }; \
589 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
590
ec12abe0
MD
591#endif
592
593#if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
594
984263bc
MD
595#include <net/radix.h>
596
fbb5a20f 597#define AF_MAX 36 /* XXX */
984263bc
MD
598
599/*
600 * Network address lookup element
601 */
602struct netcred {
603 struct radix_node netc_rnodes[2];
604 int netc_exflags;
605 struct ucred netc_anon;
606};
607
608/*
609 * Network export information
610 */
611struct netexport {
612 struct netcred ne_defexported; /* Default export */
613 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
614};
615
ec12abe0
MD
616#endif
617
618#ifdef _KERNEL
619
984263bc
MD
620extern char *mountrootfsname;
621
622/*
623 * exported vnode operations
624 */
acde96db 625int dounmount (struct mount *, int);
984263bc 626int vfs_setpublicfs /* set publicly exported fs */
1aa89f17 627 (struct mount *, struct netexport *, const struct export_args *);
b153f746
RG
628int vfs_lock (struct mount *); /* lock a vfs */
629void vfs_msync (struct mount *, int);
630void vfs_unlock (struct mount *); /* unlock a vfs */
f9642f56 631int vfs_busy (struct mount *, int);
6bdbb368 632void vfs_bufstats(void);
984263bc 633int vfs_export /* process mount export info */
1aa89f17 634 (struct mount *, struct netexport *, const struct export_args *);
984263bc 635struct netcred *vfs_export_lookup /* lookup host in fs export list */
b153f746
RG
636 (struct mount *, struct netexport *, struct sockaddr *);
637int vfs_allocate_syncvnode (struct mount *);
638void vfs_getnewfsid (struct mount *);
67863d04 639int vfs_setfsid(struct mount *mp, fsid_t *template);
b13267a5 640cdev_t vfs_getrootfsid (struct mount *);
b153f746
RG
641struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
642int vfs_modevent (module_t, int, void *);
643int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
644int vfs_rootmountalloc (char *, char *, struct mount **);
f9642f56 645void vfs_unbusy (struct mount *);
b153f746
RG
646void vfs_unmountall (void);
647int vfs_register (struct vfsconf *);
648int vfs_unregister (struct vfsconf *);
984263bc
MD
649extern struct nfs_public nfs_pub;
650
651/*
652 * Declarations for these vfs default operations are located in
653 * kern/vfs_default.c, they should be used instead of making "dummy"
654 * functions or casting entries in the VFS op table to "enopnotsupp()".
655 */
43c45e8f
HP
656vfs_start_t vfs_stdstart;
657vfs_mount_t vfs_stdmount;
658vfs_unmount_t vfs_stdunmount;
659vfs_root_t vfs_stdroot;
660vfs_quotactl_t vfs_stdquotactl;
661vfs_statfs_t vfs_stdstatfs;
d9fad06e 662vfs_statvfs_t vfs_stdstatvfs;
43c45e8f
HP
663vfs_sync_t vfs_stdsync;
664vfs_sync_t vfs_stdnosync;
665vfs_vget_t vfs_stdvget;
666vfs_fhtovp_t vfs_stdfhtovp;
667vfs_checkexp_t vfs_stdcheckexp;
668vfs_vptofh_t vfs_stdvptofh;
669vfs_init_t vfs_stdinit;
670vfs_uninit_t vfs_stduninit;
acde96db 671vfs_extattrctl_t vfs_stdextattrctl;
43c45e8f 672
9340415c
MD
673struct vop_access_args;
674int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
fb356552 675 mode_t ino_mode, u_int32_t ino_flags);
1399fa3b 676int vop_helper_setattr_flags(u_int32_t *ino_flags, u_int32_t vaflags,
fb356552
MD
677 uid_t uid, struct ucred *cred);
678uid_t vop_helper_create_uid(struct mount *mp, mode_t dmode, uid_t duid,
679 struct ucred *cred, mode_t *modep);
f7179e23
MD
680int vop_helper_chmod(struct vnode *vp, mode_t new_mode, struct ucred *cred,
681 uid_t cur_uid, gid_t cur_gid, mode_t *cur_modep);
682int vop_helper_chown(struct vnode *vp, uid_t new_uid, gid_t new_gid,
683 struct ucred *cred,
684 uid_t *cur_uidp, gid_t *cur_gidp, mode_t *cur_modep);
1399fa3b 685
408357d8
MD
686void add_bio_ops(struct bio_ops *ops);
687void rem_bio_ops(struct bio_ops *ops);
9340415c 688
2281065e 689int journal_mountctl(struct vop_mountctl_args *ap);
432b8263
MD
690void journal_remove_all_journals(struct mount *mp, int flags);
691
861905fb
MD
692void mountlist_insert(struct mount *, int);
693int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
694struct mount *mountlist_boot_getfirst(void);
695void mountlist_remove(struct mount *mp);
696int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
5b4cfb7e 697struct mount *mount_get_by_nc(struct namecache *ncp);
984263bc
MD
698#else /* !_KERNEL */
699
700#include <sys/cdefs.h>
701
702__BEGIN_DECLS
b153f746
RG
703int fstatfs (int, struct statfs *);
704int getfh (const char *, fhandle_t *);
705int getfsstat (struct statfs *, long, int);
706int getmntinfo (struct statfs **, int);
0e735c8f 707int getmntvinfo (struct statfs **, struct statvfs **, int);
b153f746
RG
708int mount (const char *, const char *, int, void *);
709int statfs (const char *, struct statfs *);
710int unmount (const char *, int);
711int fhopen (const struct fhandle *, int);
712int fhstat (const struct fhandle *, struct stat *);
713int fhstatfs (const struct fhandle *, struct statfs *);
984263bc
MD
714
715/* C library stuff */
b153f746
RG
716void endvfsent (void);
717struct ovfsconf *getvfsbyname (const char *);
718struct ovfsconf *getvfsbytype (int);
719struct ovfsconf *getvfsent (void);
984263bc 720#define getvfsbyname new_getvfsbyname
b153f746
RG
721int new_getvfsbyname (const char *, struct vfsconf *);
722void setvfsent (int);
723int vfsisloadable (const char *);
724int vfsload (const char *);
984263bc
MD
725__END_DECLS
726
727#endif /* _KERNEL */
728
729#endif /* !_SYS_MOUNT_H_ */
ec12abe0 730