version 1.26.2.1, 1994/04/14 04:06:39 |
version 1.26.2.2, 1994/04/14 04:06:40 |
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/* |
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* Copyright (c) 1989 The Regents of the University of California. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by the University of |
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* California, Berkeley and its contributors. |
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* 4. Neither the name of the University nor the names of its contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* from: @(#)mount.h 7.22 (Berkeley) 6/3/91 |
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* $Id$ |
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*/ |
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#ifndef _SYS_MOUNT_H_ |
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#define _SYS_MOUNT_H_ |
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typedef quad fsid_t; /* file system id type */ |
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/* |
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* File identifier. |
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* These are unique per filesystem on a single machine. |
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*/ |
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#define MAXFIDSZ 16 |
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struct fid { |
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u_short fid_len; /* length of data in bytes */ |
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u_short fid_reserved; /* force longword alignment */ |
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char fid_data[MAXFIDSZ]; /* data (variable length) */ |
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}; |
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/* |
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* file system statistics |
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*/ |
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#define MFSNAMELEN 15 /* length of fs type name, not inc. null */ |
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#define MNAMELEN 90 /* length of buffer for returned name */ |
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struct statfs { |
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short f_type; /* type of filesystem (unused; zero) */ |
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short f_flags; /* copy of mount flags */ |
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long f_fsize; /* fundamental file system block size */ |
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long f_bsize; /* optimal transfer block size */ |
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long f_blocks; /* total data blocks in file system */ |
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long f_bfree; /* free blocks in fs */ |
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long f_bavail; /* free blocks avail to non-superuser */ |
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long f_files; /* total file nodes in file system */ |
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long f_ffree; /* free file nodes in fs */ |
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fsid_t f_fsid; /* file system id */ |
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long f_spare[5]; /* spare for later */ |
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char f_fstypename[MFSNAMELEN+1]; /* fs type name (inc. null) */ |
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char f_mntonname[MNAMELEN]; /* directory on which mounted */ |
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char f_mntfromname[MNAMELEN];/* mounted filesystem */ |
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}; |
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/* |
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* File system types. |
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*/ |
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#define MOUNT_EXPORT ((char *)0) /* use this for exporting (mountd) */ |
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#define MOUNT_UFS "ufs" /* UNIX "Fast" Filesystem */ |
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#define MOUNT_NFS "nfs" /* Network Filesystem */ |
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#define MOUNT_MFS "mfs" /* Memory Filesystem */ |
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#define MOUNT_MSDOS "msdos" /* MSDOS Filesystem */ |
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#define MOUNT_ISOFS "isofs" /* iso9660 cdrom */ |
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#define MOUNT_FDESC "fdesc" /* /dev/fd filesystem */ |
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#define MOUNT_KERNFS "kernfs" /* kernel variable filesystem */ |
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/* XXX SLOT 8 IS CURRENTLY EMPTY */ |
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/* XXX SLOT 9 IS CURRENTLY EMPTY */ |
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#define MOUNT_PROCFS "procfs" /* proc filesystem */ |
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#define MOUNT_LOFS "lofs" /* loopback filesystem */ |
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#define MOUNT_PORTAL "portal" /* portal filesystem */ |
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/* |
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* Structure per mounted file system. |
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* Each mounted file system has an array of |
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* operations and an instance record. |
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* The file systems are put on a doubly linked list. |
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*/ |
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struct mount { |
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struct mount *mnt_next; /* next in mount list */ |
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struct mount *mnt_prev; /* prev in mount list */ |
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struct vfsops *mnt_op; /* operations on fs */ |
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struct vnode *mnt_vnodecovered; /* vnode we mounted on */ |
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struct vnode *mnt_mounth; /* list of vnodes this mount */ |
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int mnt_flag; /* flags */ |
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uid_t mnt_exroot; /* exported mapping for uid 0 */ |
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struct statfs mnt_stat; /* cache of filesystem stats */ |
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qaddr_t mnt_data; /* private data */ |
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}; |
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/* |
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* Mount flags. |
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*/ |
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#define MNT_RDONLY 0x00000001 /* read only filesystem */ |
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#define MNT_SYNCHRONOUS 0x00000002 /* file system written synchronously */ |
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#define MNT_NOEXEC 0x00000004 /* can't exec from filesystem */ |
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#define MNT_NOSUID 0x00000008 /* don't honor setuid bits on fs */ |
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#define MNT_NODEV 0x00000010 /* don't interpret special files */ |
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#define MNT_UNION 0x00000020 /* union with underlying filesystem */ |
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#define MNT_NOCREATE 0x00000040 /* don't allow filename creation */ |
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/* |
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* exported mount flags. |
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*/ |
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#define MNT_EXPORTED 0x00000100 /* file system is exported */ |
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#define MNT_EXRDONLY 0x00000200 /* exported read only */ |
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/* |
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* Flags set by internal operations. |
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*/ |
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#define MNT_LOCAL 0x00001000 /* filesystem is stored locally */ |
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#define MNT_QUOTA 0x00002000 /* quotas are enabled on filesystem */ |
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#define MNT_USER 0x00008000 /* mounted by a user */ |
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/* |
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* Mask of flags that are visible to statfs() |
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*/ |
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#define MNT_VISFLAGMASK 0x0000ffff |
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/* |
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* filesystem control flags. |
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* |
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* MNT_MLOCK lock the mount entry so that name lookup cannot proceed |
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* past the mount point. This keeps the subtree stable during mounts |
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* and unmounts. |
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*/ |
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#define MNT_UPDATE 0x00010000 /* not a real mount, just an update */ |
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#define MNT_MLOCK 0x00100000 /* lock so that subtree is stable */ |
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#define MNT_MWAIT 0x00200000 /* someone is waiting for lock */ |
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#define MNT_MPBUSY 0x00400000 /* scan of mount point in progress */ |
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#define MNT_MPWANT 0x00800000 /* waiting for mount point */ |
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#define MNT_UNMOUNT 0x01000000 /* unmount in progress */ |
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/* |
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* Operations supported on mounted file system. |
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*/ |
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#ifdef KERNEL |
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#ifdef __STDC__ |
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struct nameidata; |
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#endif |
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struct vfsops { |
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char *vfs_name; |
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int (*vfs_mount) __P((struct mount *mp, char *path, caddr_t data, |
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struct nameidata *ndp, struct proc *p)); |
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int (*vfs_start) __P((struct mount *mp, int flags, |
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struct proc *p)); |
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int (*vfs_unmount) __P((struct mount *mp, int mntflags, |
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struct proc *p)); |
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int (*vfs_root) __P((struct mount *mp, struct vnode **vpp)); |
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/* int uid, should be uid_t */ |
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int (*vfs_quotactl) __P((struct mount *mp, int cmds, uid_t uid, |
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caddr_t arg, struct proc *p)); |
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int (*vfs_statfs) __P((struct mount *mp, struct statfs *sbp, |
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struct proc *p)); |
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int (*vfs_sync) __P((struct mount *mp, int waitfor)); |
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int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp, |
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struct vnode **vpp)); |
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int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp)); |
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int (*vfs_init) __P(()); |
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}; |
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#define VFS_MOUNT(MP, PATH, DATA, NDP, P) \ |
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(*(MP)->mnt_op->vfs_mount)(MP, PATH, DATA, NDP, P) |
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#define VFS_START(MP, FLAGS, P) (*(MP)->mnt_op->vfs_start)(MP, FLAGS, P) |
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#define VFS_UNMOUNT(MP, FORCE, P) (*(MP)->mnt_op->vfs_unmount)(MP, FORCE, P) |
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#define VFS_ROOT(MP, VPP) (*(MP)->mnt_op->vfs_root)(MP, VPP) |
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#define VFS_QUOTACTL(MP,C,U,A,P) (*(MP)->mnt_op->vfs_quotactl)(MP, C, U, A, P) |
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#define VFS_STATFS(MP, SBP, P) (*(MP)->mnt_op->vfs_statfs)(MP, SBP, P) |
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#define VFS_SYNC(MP, WAITFOR) (*(MP)->mnt_op->vfs_sync)(MP, WAITFOR) |
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#define VFS_FHTOVP(MP, FIDP, VPP) (*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, VPP) |
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#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP) |
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#endif /* KERNEL */ |
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/* |
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* Flags for various system call interfaces. |
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* |
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* forcibly flags for vfs_umount(). |
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* waitfor flags to vfs_sync() and getfsstat() |
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*/ |
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#define MNT_FORCE 1 |
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#define MNT_NOFORCE 2 |
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#define MNT_WAIT 1 |
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#define MNT_NOWAIT 2 |
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/* |
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* Generic file handle |
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*/ |
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struct fhandle { |
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fsid_t fh_fsid; /* File system id of mount point */ |
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struct fid fh_fid; /* Id of file */ |
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}; |
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typedef struct fhandle fhandle_t; |
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/* |
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* Arguments to export mount |
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*/ |
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struct export_args { |
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uid_t exroot; /* mapping for root uid */ |
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}; |
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/* |
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* Arguments to mount UFS |
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*/ |
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struct ufs_args { |
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char *fspec; /* block special device to mount */ |
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}; |
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/* |
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* Arguments to mount MFS |
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*/ |
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struct mfs_args { |
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char *name; /* name to export for statfs */ |
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caddr_t base; /* base address of file system in memory */ |
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u_long size; /* size of file system */ |
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}; |
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/* |
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* File Handle (32 bytes for version 2), variable up to 1024 for version 3 |
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*/ |
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union nfsv2fh { |
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fhandle_t fh_generic; |
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u_char fh_bytes[32]; |
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}; |
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typedef union nfsv2fh nfsv2fh_t; |
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/* |
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* Arguments to mount NFS |
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*/ |
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struct nfs_args { |
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struct sockaddr *addr; /* file server address */ |
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int sotype; /* Socket type */ |
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int proto; /* and Protocol */ |
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nfsv2fh_t *fh; /* File handle to be mounted */ |
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int flags; /* flags */ |
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int wsize; /* write size in bytes */ |
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int rsize; /* read size in bytes */ |
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int timeo; /* initial timeout in .1 secs */ |
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int retrans; /* times to retry send */ |
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char *hostname; /* server's name */ |
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}; |
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/* |
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* NFS mount option flags |
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*/ |
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#define NFSMNT_SOFT 0x0001 /* soft mount (hard is default) */ |
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#define NFSMNT_WSIZE 0x0002 /* set write size */ |
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#define NFSMNT_RSIZE 0x0004 /* set read size */ |
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#define NFSMNT_TIMEO 0x0008 /* set initial timeout */ |
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#define NFSMNT_RETRANS 0x0010 /* set number of request retrys */ |
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#define NFSMNT_HOSTNAME 0x0020 /* set hostname for error printf */ |
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#define NFSMNT_INT 0x0040 /* allow interrupts on hard mount */ |
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#define NFSMNT_NOCONN 0x0080 /* Don't Connect the socket */ |
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#define NFSMNT_SCKLOCK 0x0100 /* Lock socket against others */ |
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#define NFSMNT_WANTSCK 0x0200 /* Want a socket lock */ |
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#define NFSMNT_SPONGY 0x0400 /* spongy mount (soft for stat and lookup) */ |
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#define NFSMNT_COMPRESS 0x0800 /* Compress nfs rpc xdr */ |
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#define NFSMNT_LOCKBITS (NFSMNT_SCKLOCK | NFSMNT_WANTSCK) |
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/* |
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* Arguments to mount ISO 9660 filesystems. |
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*/ |
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struct iso_args { |
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char *fspec; /* block special holding the fs to mount */ |
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int flags; /* mounting flags, see below */ |
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}; |
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#define ISOFSMNT_NORRIP 0x00000001 /* disable Rock Ridge Ext.*/ |
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#define ISOFSMNT_GENS 0x00000002 /* enable usage of generation numbers */ |
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#define ISOFSMNT_EXTATT 0x00000004 /* enable usage of extended attributes */ |
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/* |
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* Arguments to mount MSDOS filesystems. |
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*/ |
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struct msdosfs_args { |
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char *fspec; /* blocks special holding the fs to mount */ |
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uid_t uid; /* uid that owns msdosfs files */ |
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gid_t gid; /* gid that owns msdosfs files */ |
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mode_t mask; /* mask to be applied for msdosfs perms */ |
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}; |
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#ifdef KERNEL |
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/* |
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* exported vnode operations |
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*/ |
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void vfs_remove __P((struct mount *mp)); /* remove a vfs from mount list */ |
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int vfs_lock __P((struct mount *mp)); /* lock a vfs */ |
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void vfs_unlock __P((struct mount *mp)); /* unlock a vfs */ |
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struct mount *getvfs __P((fsid_t *fsid)); /* return vfs given fsid */ |
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struct mount *rootfs; /* ptr to root mount structure */ |
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extern struct vfsops *vfssw[]; /* mount filesystem type table */ |
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extern int nvfssw; /* number of vfssw entries */ |
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#else /* KERNEL */ |
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#include <sys/cdefs.h> |
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__BEGIN_DECLS |
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int fstatfs __P((int, struct statfs *)); |
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int getfh __P((const char *, fhandle_t *)); |
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int getfsstat __P((struct statfs *, long, int)); |
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int getmntinfo __P((struct statfs **, int)); |
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int mount __P((char *, const char *, int, void *)); |
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int statfs __P((const char *, struct statfs *)); |
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int unmount __P((const char *, int)); |
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__END_DECLS |
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#endif /* KERNEL */ |
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#endif /* !_SYS_MOUNT_H_ */ |