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- /*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 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
- * SUCH DAMAGE.
- *
- * @(#)mount.h 7.22 (Berkeley) 6/3/91
- */
-
- #ifndef _POSIX_SOURCE
- typedef quad fsid_t; /* file system id type */
- #endif
-
- /*
- * File identifier.
- * These are unique per filesystem on a single machine.
- */
- #define MAXFIDSZ 16
-
- struct fid {
- u_short fid_len; /* length of data in bytes */
- u_short fid_reserved; /* force longword alignment */
- char fid_data[MAXFIDSZ]; /* data (variable length) */
- };
-
- /*
- * file system statistics
- */
-
- #define MNAMELEN 90 /* length of buffer for returned name */
-
- struct statfs {
- 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 */
- #ifdef _POSIX_SOURCE
- struct _quad f_fsid;
- #else
- fsid_t f_fsid; /* file system id */
- #endif
- long f_spare[9]; /* spare for later */
- char f_mntonname[MNAMELEN]; /* directory on which mounted */
- char f_mntfromname[MNAMELEN];/* mounted filesystem */
- };
-
- /*
- * File system types.
- */
- #define MOUNT_NONE 0
- #define MOUNT_UFS 1
- #define MOUNT_NFS 2
- #define MOUNT_MFS 3
- #define MOUNT_PC 4
- #define MOUNT_MAXTYPE 4
-
- /*
- * 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 {
- 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 */
- };
-
- /*
- * Mount flags.
- */
- #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 */
-
- /*
- * exported mount flags.
- */
- #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
- * and unmounts.
- */
- #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.
- */
- #ifdef KERNEL
- #ifdef __STDC__
- struct nameidata;
- #endif
-
- struct vfsops {
- 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,
- struct proc *p));
- int (*vfs_unmount) __P((struct mount *mp, int mntflags,
- struct proc *p));
- 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,
- struct proc *p));
- int (*vfs_sync) __P((struct mount *mp, int waitfor));
- int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp,
- struct vnode **vpp));
- int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp));
- int (*vfs_init) __P(());
- };
-
- #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)
- #endif /* KERNEL */
-
- /*
- * Flags for various system call interfaces.
- *
- * forcibly flags for vfs_umount().
- * waitfor flags to vfs_sync() and getfsstat()
- */
- #define MNT_FORCE 1
- #define MNT_NOFORCE 2
- #define MNT_WAIT 1
- #define MNT_NOWAIT 2
-
- /*
- * Generic file handle
- */
- struct fhandle {
- #ifdef _POSIX_SOURCE
- struct _quad fh_fsid;
- #else
- fsid_t fh_fsid; /* File system id of mount point */
- #endif
- struct fid fh_fid; /* Id of file */
- };
- typedef struct fhandle fhandle_t;
-
- /*
- * Arguments to mount UFS
- */
- struct ufs_args {
- char *fspec; /* block special device to mount */
- int exflags; /* export related flags */
- uid_t exroot; /* mapping for root uid */
- };
-
- #ifdef MFS
- /*
- * Arguments to mount MFS
- */
- struct mfs_args {
- char *name; /* name to export for statfs */
- caddr_t base; /* base address of file system in memory */
- u_long size; /* size of file system */
- };
- #endif /* MFS */
-
- #ifdef NFS
- /*
- * File Handle (32 bytes for version 2), variable up to 1024 for version 3
- */
- union nfsv2fh {
- fhandle_t fh_generic;
- u_char fh_bytes[32];
- };
- typedef union nfsv2fh nfsv2fh_t;
-
- /*
- * Arguments to mount NFS
- */
- struct nfs_args {
- struct sockaddr *addr; /* file server address */
- int sotype; /* Socket type */
- int proto; /* and Protocol */
- nfsv2fh_t *fh; /* File handle to be mounted */
- int flags; /* flags */
- 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 */
- };
- /*
- * NFS mount option flags
- */
- #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)
- #endif /* NFS */
-
- #ifdef KERNEL
- /*
- * 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 */
-
- #else /* KERNEL */
-
- #include <sys/cdefs.h>
-
- __BEGIN_DECLS
- 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));
- __END_DECLS
-
- #endif /* KERNEL */
-