* Copyright (c) 1989 The Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* from: @(#)mount.h 7.22 (Berkeley) 6/3/91
* $Id: mount.h,v 1.4 1993/10/16 17:17:14 rgrimes Exp $
typedef quad fsid_t
; /* file system id type */
* These are unique per filesystem on a single machine.
u_short fid_len
; /* length of data in bytes */
u_short fid_reserved
; /* force longword alignment */
char fid_data
[MAXFIDSZ
]; /* data (variable length) */
#define MNAMELEN 90 /* length of buffer for returned name */
short f_type
; /* type of filesystem (see below) */
short f_flags
; /* copy of mount flags */
long f_fsize
; /* fundamental file system block size */
long f_bsize
; /* optimal transfer block size */
long f_blocks
; /* total data blocks in file system */
long f_bfree
; /* free blocks in fs */
long f_bavail
; /* free blocks avail to non-superuser */
long f_files
; /* total file nodes in file system */
long f_ffree
; /* free file nodes in fs */
fsid_t f_fsid
; /* file system id */
long f_spare
[9]; /* spare for later */
char f_mntonname
[MNAMELEN
]; /* directory on which mounted */
char f_mntfromname
[MNAMELEN
];/* mounted filesystem */
#define MOUNT_UFS 1 /* UNIX "Fast" Filesystem */
#define MOUNT_NFS 2 /* Network Filesystem */
#define MOUNT_MFS 3 /* Memory Filesystem */
#define MOUNT_MSDOS 4 /* MSDOS Filesystem */
#define MOUNT_ISOFS 5 /* iso9660 cdrom */
* Structure per mounted file system.
* Each mounted file system has an array of
* operations and an instance record.
* The file systems are put on a doubly linked list.
struct mount
*mnt_next
; /* next in mount list */
struct mount
*mnt_prev
; /* prev in mount list */
struct vfsops
*mnt_op
; /* operations on fs */
struct vnode
*mnt_vnodecovered
; /* vnode we mounted on */
struct vnode
*mnt_mounth
; /* list of vnodes this mount */
int mnt_flag
; /* flags */
uid_t mnt_exroot
; /* exported mapping for uid 0 */
struct statfs mnt_stat
; /* cache of filesystem stats */
qaddr_t mnt_data
; /* private data */
#define MNT_RDONLY 0x00000001 /* read only filesystem */
#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */
#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */
#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */
#define MNT_NODEV 0x00000010 /* don't interpret special files */
#define MNT_NOCORE 0x00000020 /* don't create core files */
#define MNT_NORRIP 0x00000040 /* disable Rock Ridge Ext.*/
#define MNT_EXPORTED 0x00000100 /* file system is exported */
#define MNT_EXRDONLY 0x00000200 /* exported read only */
* Flags set by internal operations.
#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */
#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */
* Mask of flags that are visible to statfs()
#define MNT_VISFLAGMASK 0x0000ffff
* filesystem control flags.
* MNT_MLOCK lock the mount entry so that name lookup cannot proceed
* past the mount point. This keeps the subtree stable during mounts
#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */
#define MNT_MLOCK 0x00100000 /* lock so that subtree is stable */
#define MNT_MWAIT 0x00200000 /* someone is waiting for lock */
#define MNT_MPBUSY 0x00400000 /* scan of mount point in progress */
#define MNT_MPWANT 0x00800000 /* waiting for mount point */
#define MNT_UNMOUNT 0x01000000 /* unmount in progress */
* Operations supported on mounted file system.
int (*vfs_mount
) __P((struct mount
*mp
, char *path
, caddr_t data
,
struct nameidata
*ndp
, struct proc
*p
));
int (*vfs_start
) __P((struct mount
*mp
, int flags
,
int (*vfs_unmount
) __P((struct mount
*mp
, int mntflags
,
int (*vfs_root
) __P((struct mount
*mp
, struct vnode
**vpp
));
/* int uid, should be uid_t */
int (*vfs_quotactl
) __P((struct mount
*mp
, int cmds
, int uid
,
caddr_t arg
, struct proc
*p
));
int (*vfs_statfs
) __P((struct mount
*mp
, struct statfs
*sbp
,
int (*vfs_sync
) __P((struct mount
*mp
, int waitfor
));
int (*vfs_fhtovp
) __P((struct mount
*mp
, struct fid
*fhp
,
int (*vfs_vptofh
) __P((struct vnode
*vp
, struct fid
*fhp
));
#define VFS_MOUNT(MP, PATH, DATA, NDP, P) \
(*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P)
#define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P)
#define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P)
#define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP)
#define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P)
#define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P)
#define VFS_SYNC(MP, WAITFOR) (*(MP)->mnt_op->vfs_sync)(MP, WAITFOR)
#define VFS_FHTOVP(MP, FIDP, VPP) (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP)
#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
* Flags for various system call interfaces.
* forcibly flags for vfs_umount().
* waitfor flags to vfs_sync() and getfsstat()
fsid_t fh_fsid
; /* File system id of mount point */
struct fid fh_fid
; /* Id of file */
typedef struct fhandle fhandle_t
;
char *fspec
; /* block special device to mount */
int exflags
; /* export related flags */
uid_t exroot
; /* mapping for root uid */
char *name
; /* name to export for statfs */
caddr_t base
; /* base address of file system in memory */
u_long size
; /* size of file system */
* File Handle (32 bytes for version 2), variable up to 1024 for version 3
typedef union nfsv2fh nfsv2fh_t
;
struct sockaddr
*addr
; /* file server address */
int sotype
; /* Socket type */
int proto
; /* and Protocol */
nfsv2fh_t
*fh
; /* File handle to be mounted */
int wsize
; /* write size in bytes */
int rsize
; /* read size in bytes */
int timeo
; /* initial timeout in .1 secs */
int retrans
; /* times to retry send */
char *hostname
; /* server's name */
#define NFSMNT_SOFT 0x0001 /* soft mount (hard is default) */
#define NFSMNT_WSIZE 0x0002 /* set write size */
#define NFSMNT_RSIZE 0x0004 /* set read size */
#define NFSMNT_TIMEO 0x0008 /* set initial timeout */
#define NFSMNT_RETRANS 0x0010 /* set number of request retrys */
#define NFSMNT_HOSTNAME 0x0020 /* set hostname for error printf */
#define NFSMNT_INT 0x0040 /* allow interrupts on hard mount */
#define NFSMNT_NOCONN 0x0080 /* Don't Connect the socket */
#define NFSMNT_SCKLOCK 0x0100 /* Lock socket against others */
#define NFSMNT_WANTSCK 0x0200 /* Want a socket lock */
#define NFSMNT_SPONGY 0x0400 /* spongy mount (soft for stat and lookup) */
#define NFSMNT_COMPRESS 0x0800 /* Compress nfs rpc xdr */
#define NFSMNT_LOCKBITS (NFSMNT_SCKLOCK | NFSMNT_WANTSCK)
* Arguments to mount MSDOS filesystems.
char *fspec
; /* blocks special holding the fs to mount */
int exflags
; /* mount flags */
uid_t exroot
; /* mapping for root uid */
* exported vnode operations
void vfs_remove
__P((struct mount
*mp
)); /* remove a vfs from mount list */
int vfs_lock
__P((struct mount
*mp
)); /* lock a vfs */
void vfs_unlock
__P((struct mount
*mp
)); /* unlock a vfs */
struct mount
*getvfs
__P((fsid_t
*fsid
)); /* return vfs given fsid */
struct mount
*rootfs
; /* ptr to root mount structure */
struct vfsops
*vfssw
[]; /* mount filesystem type table */
int fstatfs
__P((int, struct statfs
*));
int getfh
__P((const char *, fhandle_t
*));
int getfsstat
__P((struct statfs
*, long, int));
int getmntinfo
__P((struct statfs
**, int));
int mount
__P((int, const char *, int, void *));
int statfs
__P((const char *, struct statfs
*));
int unmount
__P((const char *, int));