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 1.33 2007/11/06 03:50:00 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>
64 struct vop_mountctl_args;
66 typedef struct fsid { int32_t val[2]; } fsid_t; /* file system id type */
70 * These are unique per filesystem on a single machine.
75 u_short fid_len; /* length of data in bytes */
76 u_short fid_reserved; /* force longword alignment */
77 char fid_data[MAXFIDSZ]; /* data (variable length) */
81 * file system statistics
84 #define MFSNAMELEN 16 /* length of fs type name, including null */
85 #define MNAMELEN 80 /* length of buffer for returned name */
88 long f_spare2; /* placeholder */
89 long f_bsize; /* fundamental file system block size */
90 long f_iosize; /* optimal transfer block size */
91 long f_blocks; /* total data blocks in file system */
92 long f_bfree; /* free blocks in fs */
93 long f_bavail; /* free blocks avail to non-superuser */
94 long f_files; /* total file nodes in file system */
95 long f_ffree; /* free file nodes in fs */
96 fsid_t f_fsid; /* file system id */
97 uid_t f_owner; /* user that mounted the filesystem */
98 int f_type; /* type of filesystem */
99 int f_flags; /* copy of mount exported flags */
100 long f_syncwrites; /* count of sync writes since mount */
101 long f_asyncwrites; /* count of async writes since mount */
102 char f_fstypename[MFSNAMELEN]; /* fs type name */
103 char f_mntonname[MNAMELEN]; /* directory on which mounted */
104 long f_syncreads; /* count of sync reads since mount */
105 long f_asyncreads; /* count of async reads since mount */
106 short f_spares1; /* unused spare */
107 char f_mntfromname[MNAMELEN];/* mounted filesystem */
108 short f_spares2; /* unused spare */
109 long f_spare[2]; /* unused spare */
112 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
115 * bio_ops are associated with the mount structure and used in conjuction
116 * with the b_dep field in a buffer. Currently softupdates and HAMMER
117 * utilize this field.
122 TAILQ_ENTRY(bio_ops) entry;
123 void (*io_start) (struct buf *);
124 void (*io_complete) (struct buf *);
125 void (*io_deallocate) (struct buf *);
126 int (*io_fsync) (struct vnode *);
127 int (*io_sync) (struct mount *);
128 void (*io_movedeps) (struct buf *, struct buf *);
129 int (*io_countdeps) (struct buf *, int);
133 * Structure per mounted file system. Each mounted file system has an
134 * array of operations and an instance record. The file systems are
135 * put on a doubly linked list.
137 * NOTE: mnt_nvnodelist and mnt_reservedvnlist. At the moment vnodes
138 * are linked into mnt_nvnodelist. At some point in the near future the
139 * vnode list will be split into a 'dirty' and 'clean' list. mnt_nvnodelist
140 * will become the dirty list and mnt_reservedvnlist will become the 'clean'
141 * list. Filesystem kld's syncing code should remain compatible since
142 * they only need to scan the dirty vnode list (nvnodelist -> dirtyvnodelist).
144 * NOTE: All VFSs must at least populate mnt_vn_ops or those VOP ops that
145 * only take namecache pointers will not be able to find their operations
146 * vector via namecache->nc_mount.
148 TAILQ_HEAD(vnodelst, vnode);
149 TAILQ_HEAD(journallst, journal);
152 TAILQ_ENTRY(mount) mnt_list; /* mount list */
153 struct vfsops *mnt_op; /* operations on fs */
154 struct vfsconf *mnt_vfc; /* configuration info */
156 struct vnode *mnt_syncer; /* syncer vnode */
157 struct vnodelst mnt_nvnodelist; /* list of vnodes this mount */
158 struct lock mnt_lock; /* mount structure lock */
159 int mnt_flag; /* flags shared with user */
160 int mnt_kern_flag; /* kernel only flags */
161 int mnt_maxsymlinklen; /* max size of short symlink */
162 struct statfs mnt_stat; /* cache of filesystem stats */
163 qaddr_t mnt_data; /* private data */
164 time_t mnt_time; /* last time written*/
165 u_int mnt_iosize_max; /* max IO request size */
166 struct vnodelst mnt_reservedvnlist; /* (future) dirty vnode list */
167 int mnt_nvnodelistsize; /* # of vnodes on this mount */
170 * ops vectors have a fixed stacking order. All primary calls run
171 * through mnt_vn_ops. This field is typically assigned to
172 * mnt_vn_norm_ops. If journaling has been enabled this field is
173 * usually assigned to mnt_vn_journal_ops.
175 struct vop_ops *mnt_vn_use_ops; /* current ops set */
177 struct vop_ops *mnt_vn_coherency_ops; /* cache coherency ops */
178 struct vop_ops *mnt_vn_journal_ops; /* journaling ops */
179 struct vop_ops *mnt_vn_norm_ops; /* for use by the VFS */
180 struct vop_ops *mnt_vn_spec_ops; /* for use by the VFS */
181 struct vop_ops *mnt_vn_fifo_ops; /* for use by the VFS */
182 struct nchandle mnt_ncmountpt; /* mount point */
183 struct nchandle mnt_ncmounton; /* mounted on */
184 int mnt_refs; /* nchandle references */
186 struct journallst mnt_jlist; /* list of active journals */
187 u_int8_t *mnt_jbitmap; /* streamid bitmap */
188 int16_t mnt_streamid; /* last streamid */
190 struct bio_ops *mnt_bioops; /* BIO ops (hammer, softupd) */
193 #endif /* _KERNEL || _KERNEL_STRUCTURES */
196 * User specifiable flags.
198 #define MNT_RDONLY 0x00000001 /* read only filesystem */
199 #define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
200 #define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
201 #define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
202 #define MNT_NODEV 0x00000010 /* don't interpret special files */
203 #define MNT_UNION 0x00000020 /* union with underlying filesystem */
204 #define MNT_ASYNC 0x00000040 /* file system written asynchronously */
205 #define MNT_SUIDDIR 0x00100000 /* special handling of SUID on dirs */
206 #define MNT_SOFTDEP 0x00200000 /* soft updates being done */
207 #define MNT_NOSYMFOLLOW 0x00400000 /* do not follow symlinks */
208 #define MNT_NOATIME 0x10000000 /* disable update of file access time */
209 #define MNT_NOCLUSTERR 0x40000000 /* disable cluster read */
210 #define MNT_NOCLUSTERW 0x80000000 /* disable cluster write */
213 * NFS export related mount flags.
215 #define MNT_EXRDONLY 0x00000080 /* exported read only */
216 #define MNT_EXPORTED 0x00000100 /* file system is exported */
217 #define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
218 #define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
219 #define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
220 #define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
223 * Flags set by internal operations,
224 * but visible to the user.
225 * XXX some of these are not quite right.. (I've never seen the root flag set)
227 #define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
228 #define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
229 #define MNT_ROOTFS 0x00004000 /* identifies the root filesystem */
230 #define MNT_USER 0x00008000 /* mounted by a user */
231 #define MNT_IGNORE 0x00800000 /* do not show entry in df */
234 * Mask of flags that are visible to statfs()
235 * XXX I think that this could now become (~(MNT_CMDFLAGS))
236 * but the 'mount' program may need changing to handle this.
238 #define MNT_VISFLAGMASK (MNT_RDONLY | MNT_SYNCHRONOUS | MNT_NOEXEC | \
239 MNT_NOSUID | MNT_NODEV | MNT_UNION | \
240 MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
241 MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
242 MNT_LOCAL | MNT_USER | MNT_QUOTA | \
243 MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
244 MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
245 MNT_IGNORE | MNT_NOSYMFOLLOW | MNT_EXPUBLIC )
247 * External filesystem command modifier flags.
248 * Unmount can use the MNT_FORCE flag.
249 * XXX These are not STATES and really should be somewhere else.
251 #define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
252 #define MNT_DELEXPORT 0x00020000 /* delete export host lists */
253 #define MNT_RELOAD 0x00040000 /* reload filesystem data */
254 #define MNT_FORCE 0x00080000 /* force unmount or readonly change */
255 #define MNT_CMDFLAGS (MNT_UPDATE|MNT_DELEXPORT|MNT_RELOAD|MNT_FORCE)
257 * Internal filesystem control flags stored in mnt_kern_flag.
259 * MNTK_UNMOUNT locks the mount entry so that name lookup cannot proceed
260 * past the mount point. This keeps the subtree stable during mounts
263 * MNTK_UNMOUNTF permits filesystems to detect a forced unmount while
264 * dounmount() is still waiting to lock the mountpoint. This allows
265 * the filesystem to cancel operations that might otherwise deadlock
266 * with the unmount attempt (used by NFS).
268 * MNTK_NOSTKMNT prevents mounting another filesystem inside the flagged one.
270 #define MNTK_UNMOUNTF 0x00000001 /* forced unmount in progress */
271 #define MNTK_NCALIASED 0x00800000 /* namecached aliased */
272 #define MNTK_UNMOUNT 0x01000000 /* unmount in progress */
273 #define MNTK_MWAIT 0x02000000 /* waiting for unmount to finish */
274 #define MNTK_WANTRDWR 0x04000000 /* upgrade to read/write requested */
275 #define MNTK_FSMID 0x08000000 /* getattr supports FSMIDs */
276 #define MNTK_NOSTKMNT 0x10000000 /* no stacked mount point allowed */
279 * mountlist_*() defines
281 #define MNTSCAN_FORWARD 0x0001
282 #define MNTSCAN_REVERSE 0x0002
283 #define MNTSCAN_NOBUSY 0x0004
285 #define MNTINS_FIRST 0x0001
286 #define MNTINS_LAST 0x0002
289 * Sysctl CTL_VFS definitions.
291 * Second level identifier specifies which filesystem. Second level
292 * identifier VFS_VFSCONF returns information about all filesystems.
293 * Second level identifier VFS_GENERIC is non-terminal.
295 #define VFS_VFSCONF 0 /* get configured filesystems */
296 #define VFS_GENERIC 0 /* generic filesystem information */
298 * Third level identifiers for VFS_GENERIC are given below; third
299 * level identifiers for specific filesystems are given in their
300 * mount specific header files.
302 #define VFS_MAXTYPENUM 1 /* int: highest defined filesystem type */
303 #define VFS_CONF 2 /* struct: vfsconf for filesystem given
307 * Flags for various system call interfaces.
309 * waitfor flags to vfs_sync() and getfsstat()
311 #define MNT_WAIT 1 /* synchronously wait for I/O to complete */
312 #define MNT_NOWAIT 2 /* start all I/O, but do not wait for it */
313 #define MNT_LAZY 4 /* be lazy and do not necessarily push it all */
316 * Generic file handle
319 fsid_t fh_fsid; /* File system id of mount point */
320 struct fid fh_fid; /* File sys specific id */
322 typedef struct fhandle fhandle_t;
325 * Export arguments for local filesystem mount calls.
328 int ex_flags; /* export related flags */
329 uid_t ex_root; /* mapping for root uid */
330 struct ucred ex_anon; /* mapping for anonymous user */
331 struct sockaddr *ex_addr; /* net address to which exported */
332 int ex_addrlen; /* and the net address length */
333 struct sockaddr *ex_mask; /* mask of valid bits in saddr */
334 int ex_masklen; /* and the smask length */
335 char *ex_indexfile; /* index file for WebNFS URLs */
339 * Structure holding information for a publicly exported filesystem
340 * (WebNFS). Currently the specs allow just for one such filesystem.
343 int np_valid; /* Do we hold valid information */
344 fhandle_t np_handle; /* Filehandle for pub fs (internal) */
345 struct mount *np_mount; /* Mountpoint of exported fs */
346 char *np_index; /* Index file */
350 * Filesystem configuration information. One of these exists for each
351 * type of filesystem supported by the kernel. These are searched at
352 * mount time to identify the requested filesystem.
355 struct vfsops *vfc_vfsops; /* filesystem operations vector */
356 char vfc_name[MFSNAMELEN]; /* filesystem type name */
357 int vfc_typenum; /* historic filesystem type number */
358 int vfc_refcount; /* number mounted of this type */
359 int vfc_flags; /* permanent flags */
360 struct vfsconf *vfc_next; /* next in list */
372 * NB: these flags refer to IMPLEMENTATION properties, not properties of
373 * any actual mounts; i.e., it does not make sense to change the flags.
375 #define VFCF_STATIC 0x00010000 /* statically compiled into kernel */
376 #define VFCF_NETWORK 0x00020000 /* may get data over the network */
377 #define VFCF_READONLY 0x00040000 /* writes are not implemented */
378 #define VFCF_SYNTHETIC 0x00080000 /* data does not represent real files */
379 #define VFCF_LOOPBACK 0x00100000 /* aliases some other mounted FS */
380 #define VFCF_UNICODE 0x00200000 /* stores file names as Unicode*/
384 #ifdef MALLOC_DECLARE
385 MALLOC_DECLARE(M_MOUNT);
387 extern int maxvfsconf; /* highest defined filesystem type */
388 extern int nfs_mount_type; /* vfc_typenum for nfs, or -1 */
389 extern struct vfsconf *vfsconf; /* head of list of filesystem types */
393 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
395 TAILQ_HEAD(mntlist, mount); /* struct mntlist */
398 * Operations supported on mounted file system.
406 typedef int vfs_mount_t(struct mount *mp, char *path, caddr_t data,
408 typedef int vfs_start_t(struct mount *mp, int flags);
409 typedef int vfs_unmount_t(struct mount *mp, int mntflags);
410 typedef int vfs_root_t(struct mount *mp, struct vnode **vpp);
411 typedef int vfs_quotactl_t(struct mount *mp, int cmds, uid_t uid, caddr_t arg,
413 typedef int vfs_statfs_t(struct mount *mp, struct statfs *sbp,
415 typedef int vfs_sync_t(struct mount *mp, int waitfor);
416 typedef int vfs_vget_t(struct mount *mp, ino_t ino, struct vnode **vpp);
417 typedef int vfs_fhtovp_t(struct mount *mp, struct fid *fhp,
419 typedef int vfs_checkexp_t(struct mount *mp, struct sockaddr *nam,
420 int *extflagsp, struct ucred **credanonp);
421 typedef int vfs_vptofh_t(struct vnode *vp, struct fid *fhp);
422 typedef int vfs_init_t(struct vfsconf *);
423 typedef int vfs_uninit_t(struct vfsconf *);
424 typedef int vfs_extattrctl_t(struct mount *mp, int cmd,const char *attrname,
425 caddr_t arg, struct ucred *cred);
428 vfs_mount_t *vfs_mount;
429 vfs_start_t *vfs_start;
430 vfs_unmount_t *vfs_unmount;
431 vfs_root_t *vfs_root;
432 vfs_quotactl_t *vfs_quotactl;
433 vfs_statfs_t *vfs_statfs;
434 vfs_sync_t *vfs_sync;
435 vfs_vget_t *vfs_vget;
436 vfs_fhtovp_t *vfs_fhtovp;
437 vfs_checkexp_t *vfs_checkexp;
438 vfs_vptofh_t *vfs_vptofh;
439 vfs_init_t *vfs_init;
440 vfs_uninit_t *vfs_uninit;
441 vfs_extattrctl_t *vfs_extattrctl;
444 #define VFS_MOUNT(MP, PATH, DATA, CRED) \
445 (*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, CRED)
446 #define VFS_START(MP, FLAGS) (*(MP)->mnt_op->vfs_start)(MP, FLAGS)
447 #define VFS_UNMOUNT(MP, FORCE) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE)
448 #define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
449 #define VFS_QUOTACTL(MP,C,U,A,CRED) \
450 (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, CRED)
451 #define VFS_STATFS(MP, SBP, CRED) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, CRED)
452 #define VFS_SYNC(MP, WAIT) (*(MP)->mnt_op->vfs_sync)(MP, WAIT)
453 #define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
454 #define VFS_FHTOVP(MP, FIDP, VPP) \
455 (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
456 #define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
457 #define VFS_CHECKEXP(MP, NAM, EXFLG, CRED) \
458 (*(MP)->mnt_op->vfs_checkexp)(MP, NAM, EXFLG, CRED)
459 #define VFS_EXTATTRCTL(MP, C, N, A, CRED) \
460 (*(MP)->mnt_op->vfs_extattrctl)(MP, C, N, A, CRED)
466 #include <sys/module.h>
468 #define VFS_SET(vfsops, fsname, flags) \
469 static struct vfsconf fsname ## _vfsconf = { \
477 static moduledata_t fsname ## _mod = { \
480 & fsname ## _vfsconf \
482 DECLARE_MODULE(fsname, fsname ## _mod, SI_SUB_VFS, SI_ORDER_MIDDLE)
486 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
488 #include <net/radix.h>
490 #define AF_MAX 33 /* XXX */
493 * Network address lookup element
496 struct radix_node netc_rnodes[2];
498 struct ucred netc_anon;
502 * Network export information
505 struct netcred ne_defexported; /* Default export */
506 struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
513 extern char *mountrootfsname;
516 * exported vnode operations
518 int dounmount (struct mount *, int);
519 int vfs_setpublicfs /* set publicly exported fs */
520 (struct mount *, struct netexport *, struct export_args *);
521 int vfs_lock (struct mount *); /* lock a vfs */
522 void vfs_msync (struct mount *, int);
523 void vfs_unlock (struct mount *); /* unlock a vfs */
524 int vfs_busy (struct mount *, int);
525 void vfs_bufstats(void);
526 int vfs_export /* process mount export info */
527 (struct mount *, struct netexport *, struct export_args *);
528 struct netcred *vfs_export_lookup /* lookup host in fs export list */
529 (struct mount *, struct netexport *, struct sockaddr *);
530 int vfs_allocate_syncvnode (struct mount *);
531 void vfs_getnewfsid (struct mount *);
532 cdev_t vfs_getrootfsid (struct mount *);
533 struct mount *vfs_getvfs (fsid_t *); /* return vfs given fsid */
534 int vfs_modevent (module_t, int, void *);
535 int vfs_mountedon (struct vnode *); /* is a vfs mounted on vp */
536 int vfs_rootmountalloc (char *, char *, struct mount **);
537 void vfs_unbusy (struct mount *);
538 void vfs_unmountall (void);
539 int vfs_register (struct vfsconf *);
540 int vfs_unregister (struct vfsconf *);
541 extern struct nfs_public nfs_pub;
544 * Declarations for these vfs default operations are located in
545 * kern/vfs_default.c, they should be used instead of making "dummy"
546 * functions or casting entries in the VFS op table to "enopnotsupp()".
548 vfs_start_t vfs_stdstart;
549 vfs_mount_t vfs_stdmount;
550 vfs_unmount_t vfs_stdunmount;
551 vfs_root_t vfs_stdroot;
552 vfs_quotactl_t vfs_stdquotactl;
553 vfs_statfs_t vfs_stdstatfs;
554 vfs_sync_t vfs_stdsync;
555 vfs_sync_t vfs_stdnosync;
556 vfs_vget_t vfs_stdvget;
557 vfs_fhtovp_t vfs_stdfhtovp;
558 vfs_checkexp_t vfs_stdcheckexp;
559 vfs_vptofh_t vfs_stdvptofh;
560 vfs_init_t vfs_stdinit;
561 vfs_uninit_t vfs_stduninit;
562 vfs_extattrctl_t vfs_stdextattrctl;
564 struct vop_access_args;
565 int vop_helper_access(struct vop_access_args *ap, uid_t ino_uid, gid_t ino_gid,
566 mode_t ino_mode, u_int32_t ino_flags);
567 void add_bio_ops(struct bio_ops *ops);
568 void rem_bio_ops(struct bio_ops *ops);
570 int journal_mountctl(struct vop_mountctl_args *ap);
571 void journal_remove_all_journals(struct mount *mp, int flags);
573 void mountlist_insert(struct mount *, int);
574 int mountlist_interlock(int (*callback)(struct mount *), struct mount *);
575 struct mount *mountlist_boot_getfirst(void);
576 void mountlist_remove(struct mount *mp);
577 int mountlist_scan(int (*callback)(struct mount *, void *), void *, int);
581 #include <sys/cdefs.h>
584 int fstatfs (int, struct statfs *);
585 int getfh (const char *, fhandle_t *);
586 int getfsstat (struct statfs *, long, int);
587 int getmntinfo (struct statfs **, int);
588 int mount (const char *, const char *, int, void *);
589 int statfs (const char *, struct statfs *);
590 int unmount (const char *, int);
591 int fhopen (const struct fhandle *, int);
592 int fhstat (const struct fhandle *, struct stat *);
593 int fhstatfs (const struct fhandle *, struct statfs *);
595 /* C library stuff */
596 void endvfsent (void);
597 struct ovfsconf *getvfsbyname (const char *);
598 struct ovfsconf *getvfsbytype (int);
599 struct ovfsconf *getvfsent (void);
600 #define getvfsbyname new_getvfsbyname
601 int new_getvfsbyname (const char *, struct vfsconf *);
602 void setvfsent (int);
603 int vfsisloadable (const char *);
604 int vfsload (const char *);
609 #endif /* !_SYS_MOUNT_H_ */