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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#)mount.h 8.21 (Berkeley) 5/20/95
30 * $FreeBSD: src/sys/sys/mount.h,v 1.89.2.7 2003/04/04 20:35:57 tegge Exp $
36 #include <sys/cdefs.h>
37 #include <sys/queue.h>
39 #include <sys/ucred.h>
44 #endif /* __BSD_VISIBLE */
47 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
51 #ifndef _SYS_NAMECACHE_H_
52 #include <sys/namecache.h>
54 #ifndef _SYS_STATVFS_H_
55 #include <sys/statvfs.h>
57 #ifndef _SYS_THREAD_H_
58 #include <sys/thread.h>
60 #include <sys/vfs_quota.h>
61 #include <sys/mplock2.h>
67 struct vop_mountctl_args
;
69 struct vmntvnodescan_info
;
71 typedef struct fsid
{ int32_t val
[2]; } fsid_t
; /* file system id type */
73 #define fsidcmp(a, b) memcmp((a), (b), sizeof(fsid_t))
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.
127 * All bio_ops callbacks must be MPSAFE and could be called without
133 TAILQ_ENTRY(bio_ops
) entry
;
134 void (*io_start
) (struct buf
*);
135 void (*io_complete
) (struct buf
*);
136 void (*io_deallocate
) (struct buf
*);
137 int (*io_fsync
) (struct vnode
*);
138 int (*io_sync
) (struct mount
*);
139 void (*io_movedeps
) (struct buf
*, struct buf
*);
140 int (*io_countdeps
) (struct buf
*, int);
141 int (*io_checkread
) (struct buf
*);
142 int (*io_checkwrite
) (struct buf
*);
148 * vfs quota accounting
150 * uids and gids often come in contiguous blocks; use a small linear
151 * array as the basic in-memory accounting allocation unit
153 #define ACCT_CHUNK_BITS 5
154 #define ACCT_CHUNK_NIDS (1<<ACCT_CHUNK_BITS)
155 #define ACCT_CHUNK_MASK (ACCT_CHUNK_NIDS - 1)
163 RB_ENTRY(ac_unode
) rb_entry
;
165 struct ac_counters uid_chunk
[ACCT_CHUNK_NIDS
];
169 RB_ENTRY(ac_gnode
) rb_entry
;
171 struct ac_counters gid_chunk
[ACCT_CHUNK_NIDS
];
174 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
177 RB_HEAD(ac_utree
,ac_unode
) ac_uroot
;
178 RB_HEAD(ac_gtree
,ac_gnode
) ac_groot
;
179 uint64_t ac_bytes
; /* total bytes used */
181 struct spinlock ac_spin
; /* protective spinlock */
186 * Structure per mounted file system. Each mounted file system has an
187 * array of operations and an instance record. The file systems are
188 * put on a doubly linked list.
190 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
191 * are linked into mnt_nvnodelist. At some point in the near future the
192 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
193 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
194 * list. Filesystem kld's syncing code should remain compatible since
195 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
197 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
198 * only take namecache pointers will not be able to find their operations
199 * vector via namecache->nc_mount.
201 * MPSAFE NOTES: mnt_lock interlocks mounting and unmounting operations.
203 * mnt_token interlocks operations which adjust the mount
204 * structure and will also be held through VFS operations
205 * for VFSes not flagged MPSAFE.
207 * The VFS should pre-set VFCF_MPSAFE in the VFS_SET() to
208 * avoid use of the mplock during mounting. This will also
209 * cause MNTK_ALL_MPSAFE to be set in mnt_kern_flags. If the
210 * VFS does not set VFCF_MPSAFE then it can set individual
211 * MNTK_*_MPSAFE flags in mnt_kern_flags.
213 TAILQ_HEAD(vnodelst
, vnode
);
214 TAILQ_HEAD(journallst
, journal
);
217 TAILQ_ENTRY(mount
) mnt_list
; /* mount list */
218 struct vfsops
*mnt_op
; /* operations on fs */
219 struct vfsconf
*mnt_vfc
; /* configuration info */
220 u_int mnt_namecache_gen
; /* ++ to clear negative hits */
221 u_int mnt_pbuf_count
; /* pbuf usage limit */
222 struct vnode
*mnt_syncer
; /* syncer vnode */
223 struct syncer_ctx
*mnt_syncer_ctx
; /* syncer process context */
224 struct vnodelst mnt_nvnodelist
; /* list of vnodes this mount */
225 TAILQ_HEAD(,vmntvnodescan_info
) mnt_vnodescan_list
;
226 struct lock mnt_lock
; /* mount structure lock */
227 int mnt_flag
; /* flags shared with user */
228 int mnt_kern_flag
; /* kernel only flags */
229 int mnt_maxsymlinklen
; /* max size of short symlink */
230 struct statfs mnt_stat
; /* cache of filesystem stats */
231 struct statvfs mnt_vstat
; /* extended stats */
232 qaddr_t mnt_data
; /* private data */
233 time_t mnt_time
; /* last time written*/
234 u_int mnt_iosize_max
; /* max IO request size */
235 struct vnodelst mnt_reservedvnlist
; /* (future) dirty vnode list */
236 int mnt_nvnodelistsize
; /* # of vnodes on this mount */
239 * ops vectors have a fixed stacking order. All primary calls run
240 * through mnt_vn_ops. This field is typically assigned to
241 * mnt_vn_norm_ops. If journaling has been enabled this field is
242 * usually assigned to mnt_vn_journal_ops.
244 struct vop_ops
*mnt_vn_use_ops
; /* current ops set */
246 struct vop_ops
*mnt_vn_coherency_ops
; /* cache coherency ops */
247 struct vop_ops
*mnt_vn_journal_ops
; /* journaling ops */
248 struct vop_ops
*mnt_vn_norm_ops
; /* for use by the VFS */
249 struct vop_ops
*mnt_vn_spec_ops
; /* for use by the VFS */
250 struct vop_ops
*mnt_vn_fifo_ops
; /* for use by the VFS */
251 struct nchandle mnt_ncmountpt
; /* mount point */
252 struct nchandle mnt_ncmounton
; /* mounted on */
253 char mnt_pad
[16]; /* (try to cache-align refs) */
254 struct ucred
*mnt_cred
; /* for cr_prison */
255 int mnt_refs
; /* nchandle references */
256 int mnt_hold
; /* prevent kfree */
257 struct lwkt_token mnt_token
; /* token lock if not MPSAFE */
258 struct journallst mnt_jlist
; /* list of active journals */
259 u_int8_t
*mnt_jbitmap
; /* streamid bitmap */
260 int16_t mnt_streamid
; /* last streamid */
262 struct bio_ops
*mnt_bioops
; /* BIO ops (hammer, softupd) */
263 struct lock mnt_renlock
; /* rename directory lock */
265 struct vfs_acct mnt_acct
; /* vfs space accounting */
266 RB_ENTRY(mount
) mnt_node
; /* mnt_stat.f_fsid */
269 #endif /* _KERNEL || _KERNEL_STRUCTURES */
272 * User specifiable flags.
274 #define MNT_RDONLY 0x00000001 /* read only filesystem */
275 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
276 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
277 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
278 #define MNT_NODEV 0x00000010 /* don't interpret special files */
279 #define MNT_AUTOMOUNTED 0x00000020 /* mounted by automountd(8) */
280 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */
281 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
282 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */
283 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
284 #define MNT_TRIM 0x01000000 /* Enable online FS trimming */
285 #define MNT_NOATIME 0x10000000 /* disable update of file access time */
286 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
287 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
290 * NFS export related mount flags.
292 #define MNT_EXRDONLY 0x00000080 /* exported read only */
293 #define MNT_EXPORTED 0x00000100 /* file system is exported */
294 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
295 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
296 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
297 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
300 * Flags set by internal operations,
301 * but visible to the user.
302 * XXX some of these are not quite right.. (I've never seen the root flag set)
304 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
305 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
306 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
307 #define MNT_USER 0x00008000 /* mounted by a user */
308 #define MNT_IGNORE 0x00800000 /* do not show entry in df */
311 * Mask of flags that are visible to statfs()
312 * XXX I think that this could now become (~(MNT_CMDFLAGS))
313 * but the 'mount' program may need changing to handle this.
315 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
316 MNT_NOSUID | MNT_NODEV | \
317 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
318 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
319 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
320 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
321 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
322 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC| \
323 MNT_TRIM | MNT_AUTOMOUNTED)
325 * External filesystem command modifier flags.
326 * Unmount can use the MNT_FORCE flag.
327 * XXX These are not STATES and really should be somewhere else.
329 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
330 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */
331 #define MNT_RELOAD 0x00040000 /* reload filesystem data */
332 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
333 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
335 * Internal filesystem control flags stored in mnt_kern_flag.
337 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
338 * past the mount point. This keeps the subtree stable during mounts
341 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
342 * dounmount() is still waiting to lock the mountpoint. This allows
343 * the filesystem to cancel operations that might otherwise deadlock
344 * with the unmount attempt (used by NFS).
346 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
348 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
349 #define MNTK_QUICKHALT 0x00008000 /* quick unmount on halt */
350 #define MNTK_MPSAFE 0x00010000 /* call vops without mnt_token lock */
351 #define MNTK_RD_MPSAFE 0x00020000 /* vop_read is MPSAFE */
352 #define MNTK_WR_MPSAFE 0x00040000 /* vop_write is MPSAFE */
353 #define MNTK_GA_MPSAFE 0x00080000 /* vop_getattr is MPSAFE */
354 #define MNTK_IN_MPSAFE 0x00100000 /* vop_inactive is MPSAFE */
355 #define MNTK_SG_MPSAFE 0x00200000 /* vop_strategy is MPSAFE */
356 #define MNTK_NCALIASED 0x00800000 /* namecached aliased */
357 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
358 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
359 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
360 #define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
361 #define MNTK_NOMSYNC 0x20000000 /* used by tmpfs */
362 #define MNTK_THR_SYNC 0x40000000 /* fs sync thread requested */
363 #define MNTK_ST_MPSAFE 0x80000000 /* (mfs) vfs_start is MPSAFE */
365 #define MNTK_ALL_MPSAFE (MNTK_MPSAFE | MNTK_RD_MPSAFE | MNTK_WR_MPSAFE | \
366 MNTK_GA_MPSAFE | MNTK_IN_MPSAFE | MNTK_SG_MPSAFE | \
370 * mountlist_*() defines
372 #define MNTSCAN_FORWARD 0x0001
373 #define MNTSCAN_REVERSE 0x0002
374 #define MNTSCAN_NOBUSY 0x0004
375 #define MNTSCAN_NOUNLOCK 0x0008
377 #define MNTINS_FIRST 0x0001
378 #define MNTINS_LAST 0x0002
381 * Sysctl CTL_VFS definitions.
383 * Second level identifier specifies which filesystem. Second level
384 * identifier VFS_VFSCONF returns information about all filesystems.
385 * Second level identifier VFS_GENERIC is non-terminal.
387 #define VFS_VFSCONF 0 /* get configured filesystems */
388 #define VFS_GENERIC 0 /* generic filesystem information */
390 * Third level identifiers for VFS_GENERIC are given below; third
391 * level identifiers for specific filesystems are given in their
392 * mount specific header files.
394 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
395 #define VFS_CONF 2 /* struct: vfsconf for filesystem given
401 * We have to cache the supplied mp because in certain situations
402 * the related vnode might go away across the use case (vop_strategy()).
404 #define VFS_MPLOCK_DECLARE struct mount *xlock_mp
406 #define VFS_MPLOCK(mp) VFS_MPLOCK_FLAG(mp, MNTK_MPSAFE)
408 #define VFS_MPLOCK_FLAG(mp, flag) \
410 if (mp->mnt_kern_flag & flag) { \
414 get_mplock(); /* TEMPORARY */ \
415 lwkt_gettoken(&xlock_mp->mnt_token); \
419 #define VFS_MPUNLOCK() \
422 lwkt_reltoken(&xlock_mp->mnt_token); \
423 rel_mplock(); /* TEMPORARY */ \
428 * Flags for various system call interfaces.
430 * waitfor flags to vfs_sync() and getfsstat()
432 #define MNT_WAIT 0x0001 /* synchronously wait for I/O to complete */
433 #define MNT_NOWAIT 0x0002 /* start all I/O, but do not wait for it */
434 #define MNT_LAZY 0x0004 /* be lazy and do not necessarily push it all */
436 #define VOP_FSYNC_SYSCALL 0x0001 /* from system call */
439 * Generic file handle
442 fsid_t fh_fsid
; /* File system id of mount point */
443 struct fid fh_fid
; /* File sys specific id */
445 typedef struct fhandle fhandle_t
;
448 * Export arguments for local filesystem mount calls.
451 int ex_flags
; /* export related flags */
452 uid_t ex_root
; /* mapping for root uid */
453 struct ucred ex_anon
; /* mapping for anonymous user */
454 struct sockaddr
*ex_addr
; /* net address to which exported */
455 int ex_addrlen
; /* and the net address length */
456 struct sockaddr
*ex_mask
; /* mask of valid bits in saddr */
457 int ex_masklen
; /* and the smask length */
458 char *ex_indexfile
; /* index file for WebNFS URLs */
462 * Structure holding information for a publicly exported filesystem
463 * (WebNFS). Currently the specs allow just for one such filesystem.
466 int np_valid
; /* Do we hold valid information */
467 fhandle_t np_handle
; /* Filehandle for pub fs (internal) */
468 struct mount
*np_mount
; /* Mountpoint of exported fs */
469 char *np_index
; /* Index file */
473 * Filesystem configuration information. One of these exists for each
474 * type of filesystem supported by the kernel. These are searched at
475 * mount time to identify the requested filesystem.
478 struct vfsops
*vfc_vfsops
; /* filesystem operations vector */
479 char vfc_name
[MFSNAMELEN
]; /* filesystem type name */
480 int vfc_typenum
; /* historic filesystem type number */
481 int vfc_refcount
; /* number mounted of this type */
482 int vfc_flags
; /* permanent flags */
483 STAILQ_ENTRY(vfsconf
) vfc_next
; /* next in list */
495 * NB: these flags refer to IMPLEMENTATION properties, not properties of
496 * any actual mounts; i.e., it does not make sense to change the flags.
498 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
499 #define VFCF_NETWORK 0x00020000 /* may get data over the network */
500 #define VFCF_READONLY 0x00040000 /* writes are not implemented */
501 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
502 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
503 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
504 #define VFCF_MPSAFE 0x00400000 /* VFS is fully MPSAFE */
507 #define VQ_NOTRESP 0x0001 /* server down */
508 #define VQ_NEEDAUTH 0x0002 /* server bad auth */
509 #define VQ_LOWDISK 0x0004 /* we're low on space */
510 #define VQ_MOUNT 0x0008 /* new filesystem arrived */
511 #define VQ_UNMOUNT 0x0010 /* filesystem has left */
512 #define VQ_DEAD 0x0020 /* filesystem is dead, needs force unmount */
513 #define VQ_ASSIST 0x0040 /* filesystem needs assistance from external
515 #define VQ_NOTRESPLOCK 0x0080 /* server lockd down */
516 #define VQ_FLAG0100 0x0100 /* placeholder */
517 #define VQ_FLAG0200 0x0200 /* placeholder */
518 #define VQ_FLAG0400 0x0400 /* placeholder */
519 #define VQ_FLAG0800 0x0800 /* placeholder */
520 #define VQ_FLAG1000 0x1000 /* placeholder */
521 #define VQ_FLAG2000 0x2000 /* placeholder */
522 #define VQ_FLAG4000 0x4000 /* placeholder */
523 #define VQ_FLAG8000 0x8000 /* placeholder */
527 #ifdef MALLOC_DECLARE
528 MALLOC_DECLARE(M_MOUNT
);
530 extern int nfs_mount_type
; /* vfc_typenum for nfs, or -1 */
532 struct vfsconf
*vfsconf_find_by_name(const char *);
533 struct vfsconf
*vfsconf_find_by_typenum(int);
534 int vfsconf_get_maxtypenum(void);
535 int vfsconf_each(int (*)(struct vfsconf
*, void *), void *);
539 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
541 TAILQ_HEAD(mntlist
, mount
); /* struct mntlist */
544 * Operations supported on mounted file system.
549 typedef int vfs_mount_t(struct mount
*mp
, char *path
, caddr_t data
,
551 typedef int vfs_start_t(struct mount
*mp
, int flags
);
552 typedef int vfs_unmount_t(struct mount
*mp
, int mntflags
);
553 typedef int vfs_root_t(struct mount
*mp
, struct vnode
**vpp
);
554 typedef int vfs_quotactl_t(struct mount
*mp
, int cmds
, uid_t uid
, caddr_t arg
,
556 typedef int vfs_statfs_t(struct mount
*mp
, struct statfs
*sbp
,
558 typedef int vfs_statvfs_t(struct mount
*mp
, struct statvfs
*sbp
,
560 typedef int vfs_sync_t(struct mount
*mp
, int waitfor
);
561 typedef int vfs_vget_t(struct mount
*mp
, struct vnode
*dvp
,
562 ino_t ino
, struct vnode
**vpp
);
563 typedef int vfs_fhtovp_t(struct mount
*mp
, struct vnode
*rootvp
,
564 struct fid
*fhp
, struct vnode
**vpp
);
565 typedef int vfs_checkexp_t(struct mount
*mp
, struct sockaddr
*nam
,
566 int *extflagsp
, struct ucred
**credanonp
);
567 typedef int vfs_vptofh_t(struct vnode
*vp
, struct fid
*fhp
);
568 typedef int vfs_init_t(struct vfsconf
*);
569 typedef int vfs_uninit_t(struct vfsconf
*);
570 typedef int vfs_extattrctl_t(struct mount
*mp
, int cmd
, struct vnode
*vp
,
571 int attrnamespace
, const char *attrname
,
573 typedef int vfs_acinit_t(struct mount
*mp
);
574 typedef void vfs_acdone_t(struct mount
*mp
);
575 typedef void vfs_account_t(struct mount
*mp
,
576 uid_t uid
, gid_t gid
, int64_t delta
);
577 typedef void vfs_ncpgen_set_t(struct mount
*mp
, struct namecache
*ncp
);
578 typedef int vfs_ncpgen_test_t(struct mount
*mp
, struct namecache
*ncp
);
579 typedef int vfs_modifying_t(struct mount
*mp
);
581 int vfs_mount(struct mount
*mp
, char *path
, caddr_t data
, struct ucred
*cred
);
582 int vfs_start(struct mount
*mp
, int flags
);
583 int vfs_unmount(struct mount
*mp
, int mntflags
);
584 int vfs_root(struct mount
*mp
, struct vnode
**vpp
);
585 int vfs_quotactl(struct mount
*mp
, int cmds
, uid_t uid
, caddr_t arg
,
587 int vfs_statfs(struct mount
*mp
, struct statfs
*sbp
, struct ucred
*cred
);
588 int vfs_statvfs(struct mount
*mp
, struct statvfs
*sbp
, struct ucred
*cred
);
589 int vfs_sync(struct mount
*mp
, int waitfor
);
590 int vfs_vget(struct mount
*mp
, struct vnode
*dvp
,
591 ino_t ino
, struct vnode
**vpp
);
592 int vfs_fhtovp(struct mount
*mp
, struct vnode
*rootvp
,
593 struct fid
*fhp
, struct vnode
**vpp
);
594 int vfs_checkexp(struct mount
*mp
, struct sockaddr
*nam
,
595 int *extflagsp
, struct ucred
**credanonp
);
596 int vfs_vptofh(struct vnode
*vp
, struct fid
*fhp
);
597 int vfs_init(struct vfsconf
*vfc
);
598 int vfs_uninit(struct vfsconf
*vfc
, struct vfsconf
*vfsp
);
599 int vfs_extattrctl(struct mount
*mp
, int cmd
, struct vnode
*vp
,
600 int attrnamespace
, const char *attrname
,
602 int vfs_modifying(struct mount
*mp
);
606 vfs_mount_t
*vfs_mount
;
607 vfs_start_t
*vfs_start
;
608 vfs_unmount_t
*vfs_unmount
;
609 vfs_root_t
*vfs_root
;
610 vfs_quotactl_t
*vfs_quotactl
;
611 vfs_statfs_t
*vfs_statfs
;
612 vfs_sync_t
*vfs_sync
;
613 vfs_vget_t
*vfs_vget
;
614 vfs_fhtovp_t
*vfs_fhtovp
;
615 vfs_checkexp_t
*vfs_checkexp
;
616 vfs_vptofh_t
*vfs_vptofh
;
617 vfs_init_t
*vfs_init
;
618 vfs_uninit_t
*vfs_uninit
;
619 vfs_extattrctl_t
*vfs_extattrctl
;
620 vfs_statvfs_t
*vfs_statvfs
;
621 vfs_acinit_t
*vfs_acinit
;
622 vfs_acdone_t
*vfs_acdone
;
623 vfs_account_t
*vfs_account
;
624 vfs_ncpgen_set_t
*vfs_ncpgen_set
;
625 vfs_ncpgen_test_t
*vfs_ncpgen_test
;
626 vfs_modifying_t
*vfs_modifying
;
629 #define VFSOPSF_NOSYNCERTHR 0x00000001
631 #define VFS_MOUNT(MP, PATH, DATA, CRED) \
632 vfs_mount(MP, PATH, DATA, CRED)
633 #define VFS_START(MP, FLAGS) \
635 #define VFS_UNMOUNT(MP, FORCE) \
636 vfs_unmount(MP, FORCE)
637 #define VFS_ROOT(MP, VPP) \
639 #define VFS_QUOTACTL(MP, C, U, A, CRED) \
640 vfs_quotactl(MP, C, U, A, CRED)
641 #define VFS_STATFS(MP, SBP, CRED) \
642 vfs_statfs(MP, SBP, CRED)
643 #define VFS_STATVFS(MP, SBP, CRED) \
644 vfs_statvfs(MP, SBP, CRED)
645 #define VFS_SYNC(MP, WAIT) \
647 #define VFS_VGET(MP, DVP, INO, VPP) \
648 vfs_vget(MP, DVP, INO, VPP)
649 #define VFS_FHTOVP(MP, ROOTVP, FIDP, VPP) \
650 vfs_fhtovp(MP, ROOTVP, FIDP, VPP)
651 #define VFS_VPTOFH(VP, FIDP) \
653 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
654 vfs_checkexp(MP, NAM, EXFLG, CRED)
655 #define VFS_EXTATTRCTL(MP, C, FVP, NS, N, CRED) \
656 vfs_extattrctl(MP, C, FVP, NS, N, CRED)
657 #define VFS_ACCOUNT(MP, U, G, D) \
658 if ((MP->mnt_op->vfs_account != NULL) && (D != 0)) \
659 MP->mnt_op->vfs_account(MP, U, G, D);
660 #define VFS_ACINIT(MP, ERROR) \
661 if (vfs_quota_enabled && MP->mnt_op->vfs_acinit != NULL) \
662 ERROR = MP->mnt_op->vfs_acinit(MP);
663 #define VFS_ACDONE(MP) \
664 if (vfs_quota_enabled && MP->mnt_op->vfs_acdone != NULL) \
665 MP->mnt_op->vfs_acdone(MP);
666 #define VFS_NCPGEN_SET(MP, NCP) \
667 MP->mnt_op->vfs_ncpgen_set(MP, NCP)
668 #define VFS_NCPGEN_TEST(MP, NCP) \
669 MP->mnt_op->vfs_ncpgen_test(MP, NCP)
670 #define VFS_MODIFYING(MP) \
671 MP->mnt_op->vfs_modifying(MP)
677 #include <sys/module.h>
679 #define VFS_SET(vfsops, fsname, flags) \
680 static struct vfsconf fsname ## _vfsconf = { \
688 static moduledata_t fsname ## _mod = { \
691 & fsname ## _vfsconf \
693 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
697 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
699 #include <net/radix.h>
702 * Network address lookup element
705 struct radix_node netc_rnodes
[2];
707 struct ucred netc_anon
;
711 * Network export information
714 struct netcred ne_defexported
; /* Default export */
715 struct radix_node_head
*ne_inethead
; /* IPv4 radix */
716 struct radix_node_head
*ne_inet6head
; /* IPv6 radix */
717 struct radix_node_head
*ne_maskhead
; /* Shared mask radix */
719 #define NE_LOCK(nep) lwkt_getpooltoken(nep)
720 #define NE_UNLOCK(nep) lwkt_relpooltoken(nep)
721 #define NE_ASSERT_LOCKED(nep) \
722 ASSERT_LWKT_TOKEN_HELD(lwkt_token_pool_lookup(nep))
728 * exported vnode operations
730 void mount_hold(struct mount
*);
731 void mount_drop(struct mount
*);
732 int dounmount (struct mount
*, int, int);
733 int vfs_setpublicfs
/* set publicly exported fs */
734 (struct mount
*, struct netexport
*, const struct export_args
*);
735 int vfs_lock (struct mount
*); /* lock a vfs */
736 void vfs_msync (struct mount
*, int);
737 void vfs_unlock (struct mount
*); /* unlock a vfs */
738 int vfs_busy (struct mount
*, int);
739 int vfs_export
/* process mount export info */
740 (struct mount
*, struct netexport
*, const struct export_args
*);
741 struct netcred
*vfs_export_lookup
/* lookup host in fs export list */
742 (struct mount
*, struct netexport
*, struct sockaddr
*);
743 int vfs_allocate_syncvnode (struct mount
*);
744 void vfs_getnewfsid (struct mount
*);
745 void vfs_setfsid(struct mount
*mp
, fsid_t
*template);
746 cdev_t
vfs_getrootfsid (struct mount
*);
747 struct mount
*vfs_getvfs (fsid_t
*); /* return vfs given fsid */
748 int vfs_modevent (module_t
, int, void *);
749 int vfs_mountedon (struct vnode
*); /* is a vfs mounted on vp */
750 int vfs_rootmountalloc (char *, char *, struct mount
**);
751 void vfs_unbusy (struct mount
*);
752 void vfs_unmountall (int halting
);
753 int vfs_register (struct vfsconf
*);
754 int vfs_unregister (struct vfsconf
*);
755 extern struct nfs_public nfs_pub
;
758 * Declarations for these vfs default operations are located in
759 * kern/vfs_default.c, they should be used instead of making "dummy"
760 * functions or casting entries in the VFS op table to "enopnotsupp()".
762 vfs_start_t vfs_stdstart
;
763 vfs_root_t vfs_stdroot
;
764 vfs_quotactl_t vfs_stdquotactl
;
765 vfs_statfs_t vfs_stdstatfs
;
766 vfs_statvfs_t vfs_stdstatvfs
;
767 vfs_sync_t vfs_stdsync
;
768 vfs_sync_t vfs_stdnosync
;
769 vfs_vget_t vfs_stdvget
;
770 vfs_fhtovp_t vfs_stdfhtovp
;
771 vfs_checkexp_t vfs_stdcheckexp
;
772 vfs_vptofh_t vfs_stdvptofh
;
773 vfs_init_t vfs_stdinit
;
774 vfs_uninit_t vfs_stduninit
;
775 vfs_extattrctl_t vfs_stdextattrctl
;
776 vfs_acinit_t vfs_stdac_init
;
777 vfs_acdone_t vfs_stdac_done
;
778 vfs_account_t vfs_stdaccount
;
779 vfs_account_t vfs_noaccount
;
780 vfs_ncpgen_set_t vfs_stdncpgen_set
;
781 vfs_ncpgen_test_t vfs_stdncpgen_test
;
782 vfs_modifying_t vfs_stdmodifying
;
784 struct vop_access_args
;
785 int vop_helper_access(struct vop_access_args
*ap
, uid_t ino_uid
, gid_t ino_gid
,
786 mode_t ino_mode
, u_int32_t ino_flags
);
787 int vop_helper_setattr_flags(u_int32_t
*ino_flags
, u_int32_t vaflags
,
788 uid_t uid
, struct ucred
*cred
);
789 uid_t
vop_helper_create_uid(struct mount
*mp
, mode_t dmode
, uid_t duid
,
790 struct ucred
*cred
, mode_t
*modep
);
791 int vop_helper_chmod(struct vnode
*vp
, mode_t new_mode
, struct ucred
*cred
,
792 uid_t cur_uid
, gid_t cur_gid
, mode_t
*cur_modep
);
793 int vop_helper_chown(struct vnode
*vp
, uid_t new_uid
, gid_t new_gid
,
795 uid_t
*cur_uidp
, gid_t
*cur_gidp
, mode_t
*cur_modep
);
796 int vop_helper_read_shortcut(struct vop_read_args
*ap
);
798 void add_bio_ops(struct bio_ops
*ops
);
799 void rem_bio_ops(struct bio_ops
*ops
);
801 int journal_mountctl(struct vop_mountctl_args
*ap
);
802 void journal_remove_all_journals(struct mount
*mp
, int flags
);
804 void mountlist_insert(struct mount
*, int);
805 int mountlist_interlock(int (*callback
)(struct mount
*), struct mount
*);
806 struct mount
*mountlist_boot_getfirst(void);
807 void mountlist_remove(struct mount
*mp
);
808 int mountlist_exists(struct mount
*mp
);
809 int mountlist_scan(int (*callback
)(struct mount
*, void *), void *, int);
810 struct mount
*mount_get_by_nc(struct namecache
*ncp
);
814 int fstatfs (int, struct statfs
*);
815 int getfh (const char *, fhandle_t
*);
816 int getfsstat (struct statfs
*, long, int);
817 int getmntinfo (struct statfs
**, int);
818 int getmntvinfo (struct statfs
**, struct statvfs
**, int);
819 int mount (const char *, const char *, int, void *);
820 int statfs (const char *, struct statfs
*);
821 int unmount (const char *, int);
822 int fhopen (const struct fhandle
*, int);
823 int fhstat (const struct fhandle
*, struct stat
*);
824 int fhstatfs (const struct fhandle
*, struct statfs
*);
826 /* C library stuff */
827 void endvfsent (void);
828 struct ovfsconf
*getvfsbyname (const char *);
829 struct ovfsconf
*getvfsbytype (int);
830 struct ovfsconf
*getvfsent (void);
831 #define getvfsbyname new_getvfsbyname
832 int new_getvfsbyname (const char *, struct vfsconf
*);
833 void setvfsent (int);
834 int vfsisloadable (const char *);
835 int vfsload (const char *);
840 #endif /* !_SYS_MOUNT_H_ */