2 * Copyright (c) 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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 $
35 * $DragonFly: src/sys/sys/mount.h,v 1.47 2008/09/17 21:44:19 dillon Exp $
41 #include <sys/ucred.h>
44 #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)
46 #endif /* !_POSIX_C_SOURCE */
49 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
51 #include <sys/queue.h>
56 #ifndef _SYS_NAMECACHE_H_
57 #include <sys/namecache.h>
59 #ifndef _SYS_STATVFS_H_
60 #include <sys/statvfs.h>
62 #ifndef _SYS_THREAD_H_
63 #include <sys/thread.h>
70 struct vop_mountctl_args
;
73 typedef struct fsid
{ int32_t val
[2]; } fsid_t
; /* file system id type */
76 * File identifier. These are unique per filesystem on a single machine.
78 * fix_ext is also used by HAMMER.
83 u_short fid_len
; /* length of data in bytes */
84 u_short fid_ext
; /* extended data */
85 char fid_data
[MAXFIDSZ
]; /* data (variable length) */
89 * file system statistics
92 #define MFSNAMELEN 16 /* length of fs type name, including null */
93 #define MNAMELEN 80 /* length of buffer for returned name */
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 */
120 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
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.
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);
138 int (*io_checkread
) (struct buf
*);
139 int (*io_checkwrite
) (struct buf
*);
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.
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).
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.
158 * MPSAFE NOTES: mnt_lock interlocks mounting and unmounting operations.
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.
164 TAILQ_HEAD(vnodelst
, vnode
);
165 TAILQ_HEAD(journallst
, journal
);
168 TAILQ_ENTRY(mount
) mnt_list
; /* mount list */
169 struct vfsops
*mnt_op
; /* operations on fs */
170 struct vfsconf
*mnt_vfc
; /* configuration info */
171 long mnt_namecache_gen
; /* ++ to clear negative hits */
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 */
179 struct statvfs mnt_vstat
; /* extended stats */
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 */
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.
192 struct vop_ops
*mnt_vn_use_ops
; /* current ops set */
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 */
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 */
199 struct nchandle mnt_ncmountpt
; /* mount point */
200 struct nchandle mnt_ncmounton
; /* mounted on */
201 int mnt_refs
; /* nchandle references */
202 struct lwkt_token mnt_token
; /* token lock if not MPSAFE */
203 struct journallst mnt_jlist
; /* list of active journals */
204 u_int8_t
*mnt_jbitmap
; /* streamid bitmap */
205 int16_t mnt_streamid
; /* last streamid */
207 struct bio_ops
*mnt_bioops
; /* BIO ops (hammer, softupd) */
210 #endif /* _KERNEL || _KERNEL_STRUCTURES */
213 * User specifiable flags.
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 */
230 * NFS export related mount flags.
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) */
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)
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 */
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.
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 )
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.
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)
274 * Internal filesystem control flags stored in mnt_kern_flag.
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
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).
285 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
287 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
288 #define MNTK_MPSAFE 0x00010000 /* call vops without mnt_token lock */
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 */
293 #define MNTK_SG_MPSAFE 0x00200000 /* vop_strategy is MPSAFE */
294 #define MNTK_NCALIASED 0x00800000 /* namecached aliased */
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 */
298 #define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
299 #define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
300 #define MNTK_NOMSYNC 0x20000000 /* used by tmpfs */
303 * mountlist_*() defines
305 #define MNTSCAN_FORWARD 0x0001
306 #define MNTSCAN_REVERSE 0x0002
307 #define MNTSCAN_NOBUSY 0x0004
309 #define MNTINS_FIRST 0x0001
310 #define MNTINS_LAST 0x0002
313 * Sysctl CTL_VFS definitions.
315 * Second level identifier specifies which filesystem. Second level
316 * identifier VFS_VFSCONF returns information about all filesystems.
317 * Second level identifier VFS_GENERIC is non-terminal.
319 #define VFS_VFSCONF 0 /* get configured filesystems */
320 #define VFS_GENERIC 0 /* generic filesystem information */
322 * Third level identifiers for VFS_GENERIC are given below; third
323 * level identifiers for specific filesystems are given in their
324 * mount specific header files.
326 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
327 #define VFS_CONF 2 /* struct: vfsconf for filesystem given
333 #define VFS_MPLOCK_DECLARE struct lwkt_tokref xlock; int xlock_mpsafe
335 #define VFS_MPLOCK1(mp) VFS_MPLOCK_FLAG(mp, MNTK_MPSAFE)
337 #define VFS_MPLOCK2(mp) \
339 if (xlock_mpsafe) { \
340 get_mplock(); /* TEMPORARY */ \
341 lwkt_gettoken(&xlock, &mp->mnt_token); \
346 #define VFS_MPLOCK_FLAG(mp, flag) \
348 if (mp->mnt_kern_flag & flag) { \
351 get_mplock(); /* TEMPORARY */ \
352 lwkt_gettoken(&xlock, &mp->mnt_token); \
357 #define VFS_MPUNLOCK(mp) \
359 if (xlock_mpsafe == 0) { \
360 lwkt_reltoken(&xlock); \
361 rel_mplock(); /* TEMPORARY */ \
366 * Flags for various system call interfaces.
368 * waitfor flags to vfs_sync() and getfsstat()
370 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */
371 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
372 #define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
374 #define VOP_FSYNC_SYSCALL 0x0001 /* from system call */
377 * Generic file handle
380 fsid_t fh_fsid
; /* File system id of mount point */
381 struct fid fh_fid
; /* File sys specific id */
383 typedef struct fhandle fhandle_t
;
386 * Export arguments for local filesystem mount calls.
389 int ex_flags
; /* export related flags */
390 uid_t ex_root
; /* mapping for root uid */
391 struct ucred ex_anon
; /* mapping for anonymous user */
392 struct sockaddr
*ex_addr
; /* net address to which exported */
393 int ex_addrlen
; /* and the net address length */
394 struct sockaddr
*ex_mask
; /* mask of valid bits in saddr */
395 int ex_masklen
; /* and the smask length */
396 char *ex_indexfile
; /* index file for WebNFS URLs */
400 * Structure holding information for a publicly exported filesystem
401 * (WebNFS). Currently the specs allow just for one such filesystem.
404 int np_valid
; /* Do we hold valid information */
405 fhandle_t np_handle
; /* Filehandle for pub fs (internal) */
406 struct mount
*np_mount
; /* Mountpoint of exported fs */
407 char *np_index
; /* Index file */
411 * Filesystem configuration information. One of these exists for each
412 * type of filesystem supported by the kernel. These are searched at
413 * mount time to identify the requested filesystem.
415 #ifndef _SYS_QUEUE_H_
416 #include <sys/queue.h>
419 struct vfsops
*vfc_vfsops
; /* filesystem operations vector */
420 char vfc_name
[MFSNAMELEN
]; /* filesystem type name */
421 int vfc_typenum
; /* historic filesystem type number */
422 int vfc_refcount
; /* number mounted of this type */
423 int vfc_flags
; /* permanent flags */
424 STAILQ_ENTRY(vfsconf
) vfc_next
; /* next in list */
436 * NB: these flags refer to IMPLEMENTATION properties, not properties of
437 * any actual mounts; i.e., it does not make sense to change the flags.
439 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
440 #define VFCF_NETWORK 0x00020000 /* may get data over the network */
441 #define VFCF_READONLY 0x00040000 /* writes are not implemented */
442 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
443 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
444 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
448 #ifdef MALLOC_DECLARE
449 MALLOC_DECLARE(M_MOUNT
);
451 extern int nfs_mount_type
; /* vfc_typenum for nfs, or -1 */
453 struct vfsconf
*vfsconf_find_by_name(const char *);
454 struct vfsconf
*vfsconf_find_by_typenum(int);
455 int vfsconf_get_maxtypenum(void);
456 int vfsconf_each(int (*)(struct vfsconf
*, void *), void *);
460 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
462 TAILQ_HEAD(mntlist
, mount
); /* struct mntlist */
465 * Operations supported on mounted file system.
473 typedef int vfs_mount_t(struct mount
*mp
, char *path
, caddr_t data
,
475 typedef int vfs_start_t(struct mount
*mp
, int flags
);
476 typedef int vfs_unmount_t(struct mount
*mp
, int mntflags
);
477 typedef int vfs_root_t(struct mount
*mp
, struct vnode
**vpp
);
478 typedef int vfs_quotactl_t(struct mount
*mp
, int cmds
, uid_t uid
, caddr_t arg
,
480 typedef int vfs_statfs_t(struct mount
*mp
, struct statfs
*sbp
,
482 typedef int vfs_statvfs_t(struct mount
*mp
, struct statvfs
*sbp
,
484 typedef int vfs_sync_t(struct mount
*mp
, int waitfor
);
485 typedef int vfs_vget_t(struct mount
*mp
, struct vnode
*dvp
,
486 ino_t ino
, struct vnode
**vpp
);
487 typedef int vfs_fhtovp_t(struct mount
*mp
, struct vnode
*rootvp
,
488 struct fid
*fhp
, struct vnode
**vpp
);
489 typedef int vfs_checkexp_t(struct mount
*mp
, struct sockaddr
*nam
,
490 int *extflagsp
, struct ucred
**credanonp
);
491 typedef int vfs_vptofh_t(struct vnode
*vp
, struct fid
*fhp
);
492 typedef int vfs_init_t(struct vfsconf
*);
493 typedef int vfs_uninit_t(struct vfsconf
*);
494 typedef int vfs_extattrctl_t(struct mount
*mp
, int cmd
,const char *attrname
,
495 caddr_t arg
, struct ucred
*cred
);
497 int vfs_mount(struct mount
*mp
, char *path
, caddr_t data
, struct ucred
*cred
);
498 int vfs_start(struct mount
*mp
, int flags
);
499 int vfs_unmount(struct mount
*mp
, int mntflags
);
500 int vfs_root(struct mount
*mp
, struct vnode
**vpp
);
501 int vfs_quotactl(struct mount
*mp
, int cmds
, uid_t uid
, caddr_t arg
,
503 int vfs_statfs(struct mount
*mp
, struct statfs
*sbp
, struct ucred
*cred
);
504 int vfs_statvfs(struct mount
*mp
, struct statvfs
*sbp
, struct ucred
*cred
);
505 int vfs_sync(struct mount
*mp
, int waitfor
);
506 int vfs_vget(struct mount
*mp
, struct vnode
*dvp
,
507 ino_t ino
, struct vnode
**vpp
);
508 int vfs_fhtovp(struct mount
*mp
, struct vnode
*rootvp
,
509 struct fid
*fhp
, struct vnode
**vpp
);
510 int vfs_checkexp(struct mount
*mp
, struct sockaddr
*nam
,
511 int *extflagsp
, struct ucred
**credanonp
);
512 int vfs_vptofh(struct vnode
*vp
, struct fid
*fhp
);
513 int vfs_init(struct vfsconf
*vfc
);
514 int vfs_uninit(struct vfsconf
*vfc
, struct vfsconf
*vfsp
);
515 int vfs_extattrctl(struct mount
*mp
, int cmd
,const char *attrname
,
516 caddr_t arg
, struct ucred
*cred
);
520 vfs_mount_t
*vfs_mount
;
521 vfs_start_t
*vfs_start
;
522 vfs_unmount_t
*vfs_unmount
;
523 vfs_root_t
*vfs_root
;
524 vfs_quotactl_t
*vfs_quotactl
;
525 vfs_statfs_t
*vfs_statfs
;
526 vfs_sync_t
*vfs_sync
;
527 vfs_vget_t
*vfs_vget
;
528 vfs_fhtovp_t
*vfs_fhtovp
;
529 vfs_checkexp_t
*vfs_checkexp
;
530 vfs_vptofh_t
*vfs_vptofh
;
531 vfs_init_t
*vfs_init
;
532 vfs_uninit_t
*vfs_uninit
;
533 vfs_extattrctl_t
*vfs_extattrctl
;
534 vfs_statvfs_t
*vfs_statvfs
;
537 #define VFS_MOUNT(MP, PATH, DATA, CRED) \
538 vfs_mount(MP, PATH, DATA, CRED)
539 #define VFS_START(MP, FLAGS) \
541 #define VFS_UNMOUNT(MP, FORCE) \
542 vfs_unmount(MP, FORCE)
543 #define VFS_ROOT(MP, VPP) \
545 #define VFS_QUOTACTL(MP, C, U, A, CRED) \
546 vfs_quotactl(MP, C, U, A, CRED)
547 #define VFS_STATFS(MP, SBP, CRED) \
548 vfs_statfs(MP, SBP, CRED)
549 #define VFS_STATVFS(MP, SBP, CRED) \
550 vfs_statvfs(MP, SBP, CRED)
551 #define VFS_SYNC(MP, WAIT) \
553 #define VFS_VGET(MP, DVP, INO, VPP) \
554 vfs_vget(MP, DVP, INO, VPP)
555 #define VFS_FHTOVP(MP, ROOTVP, FIDP, VPP) \
556 vfs_fhtovp(MP, ROOTVP, FIDP, VPP)
557 #define VFS_VPTOFH(VP, FIDP) \
559 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
560 vfs_checkexp(MP, NAM, EXFLG, CRED)
561 #define VFS_EXTATTRCTL(MP, C, N, A, CRED) \
562 vfs_extattrctl(MP, C, N, A, CRED)
568 #include <sys/module.h>
570 #define VFS_SET(vfsops, fsname, flags) \
571 static struct vfsconf fsname ## _vfsconf = { \
579 static moduledata_t fsname ## _mod = { \
582 & fsname ## _vfsconf \
584 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
588 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
590 #include <net/radix.h>
592 #define AF_MAX 35 /* XXX */
595 * Network address lookup element
598 struct radix_node netc_rnodes
[2];
600 struct ucred netc_anon
;
604 * Network export information
607 struct netcred ne_defexported
; /* Default export */
608 struct radix_node_head
*ne_rtable
[AF_MAX
+1]; /* Individual exports */
615 extern char *mountrootfsname
;
618 * exported vnode operations
620 int dounmount (struct mount
*, int);
621 int vfs_setpublicfs
/* set publicly exported fs */
622 (struct mount
*, struct netexport
*, const struct export_args
*);
623 int vfs_lock (struct mount
*); /* lock a vfs */
624 void vfs_msync (struct mount
*, int);
625 void vfs_unlock (struct mount
*); /* unlock a vfs */
626 int vfs_busy (struct mount
*, int);
627 void vfs_bufstats(void);
628 int vfs_export
/* process mount export info */
629 (struct mount
*, struct netexport
*, const struct export_args
*);
630 struct netcred
*vfs_export_lookup
/* lookup host in fs export list */
631 (struct mount
*, struct netexport
*, struct sockaddr
*);
632 int vfs_allocate_syncvnode (struct mount
*);
633 void vfs_getnewfsid (struct mount
*);
634 int vfs_setfsid(struct mount
*mp
, fsid_t
*template);
635 cdev_t
vfs_getrootfsid (struct mount
*);
636 struct mount
*vfs_getvfs (fsid_t
*); /* return vfs given fsid */
637 int vfs_modevent (module_t
, int, void *);
638 int vfs_mountedon (struct vnode
*); /* is a vfs mounted on vp */
639 int vfs_rootmountalloc (char *, char *, struct mount
**);
640 void vfs_unbusy (struct mount
*);
641 void vfs_unmountall (void);
642 int vfs_register (struct vfsconf
*);
643 int vfs_unregister (struct vfsconf
*);
644 extern struct nfs_public nfs_pub
;
647 * Declarations for these vfs default operations are located in
648 * kern/vfs_default.c, they should be used instead of making "dummy"
649 * functions or casting entries in the VFS op table to "enopnotsupp()".
651 vfs_start_t vfs_stdstart
;
652 vfs_mount_t vfs_stdmount
;
653 vfs_unmount_t vfs_stdunmount
;
654 vfs_root_t vfs_stdroot
;
655 vfs_quotactl_t vfs_stdquotactl
;
656 vfs_statfs_t vfs_stdstatfs
;
657 vfs_statvfs_t vfs_stdstatvfs
;
658 vfs_sync_t vfs_stdsync
;
659 vfs_sync_t vfs_stdnosync
;
660 vfs_vget_t vfs_stdvget
;
661 vfs_fhtovp_t vfs_stdfhtovp
;
662 vfs_checkexp_t vfs_stdcheckexp
;
663 vfs_vptofh_t vfs_stdvptofh
;
664 vfs_init_t vfs_stdinit
;
665 vfs_uninit_t vfs_stduninit
;
666 vfs_extattrctl_t vfs_stdextattrctl
;
668 struct vop_access_args
;
669 int vop_helper_access(struct vop_access_args
*ap
, uid_t ino_uid
, gid_t ino_gid
,
670 mode_t ino_mode
, u_int32_t ino_flags
);
671 int vop_helper_setattr_flags(u_int32_t
*ino_flags
, u_int32_t vaflags
,
672 uid_t uid
, struct ucred
*cred
);
673 uid_t
vop_helper_create_uid(struct mount
*mp
, mode_t dmode
, uid_t duid
,
674 struct ucred
*cred
, mode_t
*modep
);
675 int vop_helper_chmod(struct vnode
*vp
, mode_t new_mode
, struct ucred
*cred
,
676 uid_t cur_uid
, gid_t cur_gid
, mode_t
*cur_modep
);
677 int vop_helper_chown(struct vnode
*vp
, uid_t new_uid
, gid_t new_gid
,
679 uid_t
*cur_uidp
, gid_t
*cur_gidp
, mode_t
*cur_modep
);
681 void add_bio_ops(struct bio_ops
*ops
);
682 void rem_bio_ops(struct bio_ops
*ops
);
684 int journal_mountctl(struct vop_mountctl_args
*ap
);
685 void journal_remove_all_journals(struct mount
*mp
, int flags
);
687 void mountlist_insert(struct mount
*, int);
688 int mountlist_interlock(int (*callback
)(struct mount
*), struct mount
*);
689 struct mount
*mountlist_boot_getfirst(void);
690 void mountlist_remove(struct mount
*mp
);
691 int mountlist_scan(int (*callback
)(struct mount
*, void *), void *, int);
695 #include <sys/cdefs.h>
698 int fstatfs (int, struct statfs
*);
699 int getfh (const char *, fhandle_t
*);
700 int getfsstat (struct statfs
*, long, int);
701 int getmntinfo (struct statfs
**, int);
702 int getmntvinfo (struct statfs
**, struct statvfs
**, int);
703 int mount (const char *, const char *, int, void *);
704 int statfs (const char *, struct statfs
*);
705 int unmount (const char *, int);
706 int fhopen (const struct fhandle
*, int);
707 int fhstat (const struct fhandle
*, struct stat
*);
708 int fhstatfs (const struct fhandle
*, struct statfs
*);
710 /* C library stuff */
711 void endvfsent (void);
712 struct ovfsconf
*getvfsbyname (const char *);
713 struct ovfsconf
*getvfsbytype (int);
714 struct ovfsconf
*getvfsent (void);
715 #define getvfsbyname new_getvfsbyname
716 int new_getvfsbyname (const char *, struct vfsconf
*);
717 void setvfsent (int);
718 int vfsisloadable (const char *);
719 int vfsload (const char *);
724 #endif /* !_SYS_MOUNT_H_ */