521 lines
18 KiB
C
521 lines
18 KiB
C
/*
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* Copyright (c) 1989, 1991, 1993
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* The Regents of the University of California. 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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* @(#)mount.h 8.13 (Berkeley) 3/27/94
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* $Id: mount.h,v 1.29 1995/11/13 08:52:08 bde Exp $
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*/
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#ifndef _SYS_MOUNT_H_
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#define _SYS_MOUNT_H_
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#ifndef KERNEL
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#include <sys/ucred.h>
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#endif
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#include <sys/queue.h>
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typedef struct { long val[2]; } 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 MNAMELEN 90 /* length of buffer for returned name */
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struct statfs {
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short f_type; /* type of filesystem (see below) */
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short f_flags; /* copy of mount flags */
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long f_bsize; /* fundamental file system block size */
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long f_iosize; /* 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[9]; /* spare for later */
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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_NONE 0
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#define MOUNT_UFS 1 /* Fast Filesystem */
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#define MOUNT_NFS 2 /* Sun-compatible Network Filesystem */
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#define MOUNT_MFS 3 /* Memory-based Filesystem */
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#define MOUNT_MSDOS 4 /* MS/DOS Filesystem */
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#define MOUNT_LFS 5 /* Log-based Filesystem */
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#define MOUNT_LOFS 6 /* Loopback Filesystem */
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#define MOUNT_FDESC 7 /* File Descriptor Filesystem */
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#define MOUNT_PORTAL 8 /* Portal Filesystem */
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#define MOUNT_NULL 9 /* Minimal Filesystem Layer */
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#define MOUNT_UMAP 10 /* User/Group Identifer Remapping Filesystem */
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#define MOUNT_KERNFS 11 /* Kernel Information Filesystem */
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#define MOUNT_PROCFS 12 /* /proc Filesystem */
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#define MOUNT_AFS 13 /* Andrew Filesystem */
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#define MOUNT_CD9660 14 /* ISO9660 (aka CDROM) Filesystem */
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#define MOUNT_UNION 15 /* Union (translucent) Filesystem */
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#define MOUNT_DEVFS 16 /* existing device Filesystem */
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#define MOUNT_EXT2FS 17 /* Linux EXT2FS */
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#define MOUNT_MAXTYPE 17
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#define INITMOUNTNAMES { \
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"none", /* 0 MOUNT_NONE */ \
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"ufs", /* 1 MOUNT_UFS */ \
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"nfs", /* 2 MOUNT_NFS */ \
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"mfs", /* 3 MOUNT_MFS */ \
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"msdos", /* 4 MOUNT_MSDOS */ \
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"lfs", /* 5 MOUNT_LFS */ \
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"lofs", /* 6 MOUNT_LOFS */ \
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"fdesc", /* 7 MOUNT_FDESC */ \
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"portal", /* 8 MOUNT_PORTAL */ \
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"null", /* 9 MOUNT_NULL */ \
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"umap", /* 10 MOUNT_UMAP */ \
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"kernfs", /* 11 MOUNT_KERNFS */ \
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"procfs", /* 12 MOUNT_PROCFS */ \
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"afs", /* 13 MOUNT_AFS */ \
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"cd9660", /* 14 MOUNT_CD9660 */ \
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"union", /* 15 MOUNT_UNION */ \
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"devfs", /* 16 MOUNT_DEVFS */ \
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"ext2fs", /* 17 MOUNT_EXT2FS */ \
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0, /* 17 MOUNT_SPARE */ \
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}
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/*
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* Structure per mounted file system. Each mounted file system has an
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* array of operations and an instance record. The file systems are
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* put on a doubly linked list.
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*/
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LIST_HEAD(vnodelst, vnode);
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struct mount {
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CIRCLEQ_ENTRY(mount) mnt_list; /* mount list */
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struct vfsops *mnt_op; /* operations on fs */
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struct vfsconf *mnt_vfc; /* configuration info */
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struct vnode *mnt_vnodecovered; /* vnode we mounted on */
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struct vnodelst mnt_vnodelist; /* list of vnodes this mount */
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int mnt_flag; /* flags */
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int mnt_maxsymlinklen; /* max size of short symlink */
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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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/* struct vfsconf *mnt_vfc; */ /* configuration info */
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time_t mnt_time; /* last time written*/
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};
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/*
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* Mount flags.
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*
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* Unmount uses MNT_FORCE flag.
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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_ASYNC 0x00000040 /* file system written asynchronously */
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/*
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* exported mount flags.
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*/
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#define MNT_EXRDONLY 0x00000080 /* exported read only */
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#define MNT_EXPORTED 0x00000100 /* file system is exported */
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#define MNT_DEFEXPORTED 0x00000200 /* exported to the world */
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#define MNT_EXPORTANON 0x00000400 /* use anon uid mapping for everyone */
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#define MNT_EXKERB 0x00000800 /* exported with Kerberos uid mapping */
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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_ROOTFS 0x00004000 /* identifies the root 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_DELEXPORT 0x00020000 /* delete export host lists */
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#define MNT_RELOAD 0x00040000 /* reload filesystem data */
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#define MNT_FORCE 0x00080000 /* force unmount or readonly change */
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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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#define MNT_WANTRDWR 0x02000000 /* want upgrade to read/write */
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/*
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* used to get configured filesystems information
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*/
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#define VFS_MAXNAMELEN 32
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struct vfsconf {
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void *vfc_vfsops;
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char vfc_name[VFS_MAXNAMELEN];
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int vfc_index;
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int vfc_refcount;
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int vfc_flags;
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};
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/*
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* NB: these flags refer to IMPLEMENTATION properties, not properties of
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* any actual mounts; i.e., it does not make sense to change the flags.
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*/
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#define VFCF_STATIC 0x00000001 /* statically compiled into kernel */
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#define VFCF_NETWORK 0x00000002 /* may get data over the network */
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#define VFCF_READONLY 0x00000004 /* writes are not implemented */
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#define VFCF_SYNTHETIC 0x00000008 /* data does not represent real files */
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#define VFCF_LOOPBACK 0x00000010 /* aliases some other mounted FS */
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#define VFCF_UNICODE 0x00000020 /* stores file names as Unicode*/
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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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extern int doforce; /* Flag to permit forcible unmounting. */
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extern struct vfsconf void_vfsconf;
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extern struct vfsconf *vfsconf[];
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#ifdef __STDC__
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struct nameidata;
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struct mbuf;
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#endif
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struct vfsops {
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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 (*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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struct ucred *cred, struct proc *p));
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int (*vfs_vget) __P((struct mount *mp, ino_t ino,
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struct vnode **vpp));
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int (*vfs_fhtovp) __P((struct mount *mp, struct fid *fhp,
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struct mbuf *nam, struct vnode **vpp,
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int *exflagsp, struct ucred **credanonp));
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int (*vfs_vptofh) __P((struct vnode *vp, struct fid *fhp));
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int (*vfs_init) __P((void));
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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, WAIT, C, P) (*(MP)->mnt_op->vfs_sync)(MP, WAIT, C, P)
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#define VFS_VGET(MP, INO, VPP) (*(MP)->mnt_op->vfs_vget)(MP, INO, VPP)
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#define VFS_FHTOVP(MP, FIDP, NAM, VPP, EXFLG, CRED) \
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(*(MP)->mnt_op->vfs_fhtovp)(MP, FIDP, NAM, VPP, EXFLG, CRED)
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#define VFS_VPTOFH(VP, FIDP) (*(VP)->v_mount->mnt_op->vfs_vptofh)(VP, FIDP)
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#ifdef VFS_LKM
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#include <sys/conf.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/lkm.h>
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#define VFS_SET(vfsops, fsname, index, flags) \
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static struct vfsconf _fs_vfsconf = { \
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&vfsops, \
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#fsname, \
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index, \
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0, \
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flags \
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}; \
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extern struct linker_set MODVNOPS; \
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MOD_VFS(#fsname,index,&MODVNOPS,&_fs_vfsconf); \
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int \
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fsname ## _mod(struct lkm_table *lkmtp, int cmd, int ver) { \
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DISPATCH(lkmtp, cmd, ver, lkm_nullcmd, lkm_nullcmd, lkm_nullcmd); }
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#else
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#define VFS_SET(vfsops, fsname, index, flags) \
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static struct vfsconf _fs_vfsconf = { \
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&vfsops, \
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#fsname, \
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index, \
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0, \
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flags | VFCF_STATIC \
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}; \
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DATA_SET(vfs_set,_fs_vfsconf)
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#endif /* VFS_LKM */
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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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* waitfor flags to vfs_sync() and getfsstat()
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*/
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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; /* File sys specific id */
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};
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typedef struct fhandle fhandle_t;
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#ifdef KERNEL
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#include <net/radix.h>
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#include <sys/socket.h> /* XXX for AF_MAX */
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/*
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* Network address lookup element
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*/
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struct netcred {
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struct radix_node netc_rnodes[2];
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int netc_exflags;
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struct ucred netc_anon;
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};
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/*
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* Network export information
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*/
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struct netexport {
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struct netcred ne_defexported; /* Default export */
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struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */
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};
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#endif /* KERNEL */
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/*
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* Export arguments for local filesystem mount calls.
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*/
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struct export_args {
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int ex_flags; /* export related flags */
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uid_t ex_root; /* mapping for root uid */
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struct ucred ex_anon; /* mapping for anonymous user */
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struct sockaddr *ex_addr; /* net address to which exported */
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int ex_addrlen; /* and the net address length */
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struct sockaddr *ex_mask; /* mask of valid bits in saddr */
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int ex_masklen; /* and the smask length */
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};
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/*
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* Arguments to mount UFS-based filesystems
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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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struct export_args export; /* network export information */
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};
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#ifdef MFS
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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 *fspec; /* name to export for statfs */
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struct export_args export; /* if exported MFSes are supported */
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caddr_t base; /* base of file system in memory */
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u_long size; /* size of file system */
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};
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#endif /* MFS */
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#ifdef MSDOSFS
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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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struct export_args export; /* network export information */
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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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#endif
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#ifdef CD9660
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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 device to mount */
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struct export_args export; /* network export info */
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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 generation numbers */
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#define ISOFSMNT_EXTATT 0x00000004 /* enable extended attributes */
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#endif /* CD9660 */
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#ifdef NFS
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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 addrlen; /* length of address */
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int sotype; /* Socket type */
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int proto; /* and Protocol */
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u_char *fh; /* File handle to be mounted */
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int fhsize; /* Size, in bytes, of fh */
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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 readdirsize; /* readdir 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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int maxgrouplist; /* Max. size of group list */
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int readahead; /* # of blocks to readahead */
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int leaseterm; /* Term (sec) of lease */
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int deadthresh; /* Retrans threshold */
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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 0x00000001 /* soft mount (hard is default) */
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#define NFSMNT_WSIZE 0x00000002 /* set write size */
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#define NFSMNT_RSIZE 0x00000004 /* set read size */
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#define NFSMNT_TIMEO 0x00000008 /* set initial timeout */
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#define NFSMNT_RETRANS 0x00000010 /* set number of request retrys */
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#define NFSMNT_MAXGRPS 0x00000020 /* set maximum grouplist size */
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#define NFSMNT_INT 0x00000040 /* allow interrupts on hard mount */
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#define NFSMNT_NOCONN 0x00000080 /* Don't Connect the socket */
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#define NFSMNT_NQNFS 0x00000100 /* Use Nqnfs protocol */
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#define NFSMNT_NFSV3 0x00000200 /* Use NFS Version 3 protocol */
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#define NFSMNT_KERB 0x00000400 /* Use Kerberos authentication */
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#define NFSMNT_DUMBTIMR 0x00000800 /* Don't estimate rtt dynamically */
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#define NFSMNT_LEASETERM 0x00001000 /* set lease term (nqnfs) */
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#define NFSMNT_READAHEAD 0x00002000 /* set read ahead */
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#define NFSMNT_DEADTHRESH 0x00004000 /* set dead server retry thresh */
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#define NFSMNT_RESVPORT 0x00008000 /* Allocate a reserved port */
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#define NFSMNT_RDIRPLUS 0x00010000 /* Use Readdirplus for V3 */
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#define NFSMNT_READDIRSIZE 0x00020000 /* Set readdir size */
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#define NFSMNT_INTERNAL 0xfffc0000 /* Bits set internally */
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#define NFSMNT_HASWRITEVERF 0x00040000 /* Has write verifier for V3 */
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#define NFSMNT_GOTPATHCONF 0x00080000 /* Got the V3 pathconf info */
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#define NFSMNT_GOTFSINFO 0x00100000 /* Got the V3 fsinfo */
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#define NFSMNT_MNTD 0x00200000 /* Mnt server for mnt point */
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#define NFSMNT_DISMINPROG 0x00400000 /* Dismount in progress */
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#define NFSMNT_DISMNT 0x00800000 /* Dismounted */
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#define NFSMNT_SNDLOCK 0x01000000 /* Send socket lock */
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#define NFSMNT_WANTSND 0x02000000 /* Want above */
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#define NFSMNT_RCVLOCK 0x04000000 /* Rcv socket lock */
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#define NFSMNT_WANTRCV 0x08000000 /* Want above */
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|
#define NFSMNT_WAITAUTH 0x10000000 /* Wait for authentication */
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|
#define NFSMNT_HASAUTH 0x20000000 /* Has authenticator */
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|
#define NFSMNT_WANTAUTH 0x40000000 /* Wants an authenticator */
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|
#define NFSMNT_AUTHERR 0x80000000 /* Authentication error */
|
|
#endif /* NFS */
|
|
|
|
#ifdef KERNEL
|
|
extern int (*mountroot) __P((void *));
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extern struct vfsops *mountrootvfsops;
|
|
|
|
/*
|
|
* exported vnode operations
|
|
*/
|
|
int dounmount __P((struct mount *, int, struct proc *));
|
|
struct mount *getvfs __P((fsid_t *)); /* return vfs given fsid */
|
|
void getnewfsid __P((struct mount *, int));
|
|
int vflush __P((struct mount *, struct vnode *, int));
|
|
int vfs_export /* process mount export info */
|
|
__P((struct mount *, struct netexport *, struct export_args *));
|
|
struct netcred *vfs_export_lookup /* lookup host in fs export list */
|
|
__P((struct mount *, struct netexport *, struct mbuf *));
|
|
int vfs_lock __P((struct mount *)); /* lock a vfs */
|
|
int vfs_mountedon __P((struct vnode *)); /* is a vfs mounted on vp */
|
|
int vfs_mountroot __P((void *)); /* XXX goes away? */
|
|
void vfs_msync __P((struct mount *, int));
|
|
void vfs_unlock __P((struct mount *)); /* unlock a vfs */
|
|
void vfs_unmountall __P((void));
|
|
int vfs_busy __P((struct mount *)); /* mark a vfs busy */
|
|
void vfs_unbusy __P((struct mount *)); /* mark a vfs not busy */
|
|
extern CIRCLEQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */
|
|
extern struct vfsops *vfssw[]; /* 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));
|
|
|
|
/* C library stuff */
|
|
struct vfsconf *getvfsbyname __P((const char *));
|
|
struct vfsconf *getvfsbytype __P((int));
|
|
struct vfsconf *getvfsent __P((void));
|
|
void setvfsent __P((int));
|
|
void endvfsent __P((void));
|
|
int vfsisloadable __P((const char *));
|
|
int vfsload __P((const char *));
|
|
__END_DECLS
|
|
|
|
#endif /* KERNEL */
|
|
|
|
#endif /* !_SYS_MOUNT_H_ */
|