f817326b2e
machdep.c: Changed printf's a little and call vfs_unmountall() if the sync was successful. cd9660_vfsops.c, ffs_vfsops.c, nfs_vfsops.c, lfs_vfsops.c: Allow dismount of root FS. It is now disallowed at a higher level. vfs_conf.c: Removed unused rootfs global. vfs_subr.c: Added new routines vfs_unmountall and vfs_unmountroot. Filesystems are now dismounted if the machine is properly rebooted. ffs_vfsops.c: Toggle clean bit at the appropriate places. Print warning if an unclean FS is mounted. ffs_vfsops.c, lfs_vfsops.c: Fix bug in selecting proper flags for VOP_CLOSE(). vfs_syscalls.c: Disallow dismounting root FS via umount syscall.
258 lines
6.7 KiB
C
258 lines
6.7 KiB
C
/*
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* Copyright (c) 1989, 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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* @(#)vfs_conf.c 8.8 (Berkeley) 3/31/94
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* $Id: vfs_conf.c,v 1.2 1994/08/02 07:43:19 davidg Exp $
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*/
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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#ifdef FFS
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#include <ufs/ffs/ffs_extern.h>
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/*
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* This specifies the filesystem used to mount the root.
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* This specification should be done by /etc/config.
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*/
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int (*mountroot)() = ffs_mountroot;
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#endif
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struct vnode *rootvnode;
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/*
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* Set up the filesystem operations for vnodes.
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* The types are defined in mount.h.
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*/
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#ifdef FFS
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extern struct vfsops ufs_vfsops;
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#define UFS_VFSOPS &ufs_vfsops
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#else
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#define UFS_VFSOPS NULL
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#endif
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#ifdef LFS
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extern struct vfsops lfs_vfsops;
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#define LFS_VFSOPS &lfs_vfsops
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#else
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#define LFS_VFSOPS NULL
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#endif
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#ifdef MFS
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extern struct vfsops mfs_vfsops;
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#define MFS_VFSOPS &mfs_vfsops
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#else
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#define MFS_VFSOPS NULL
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#endif
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#ifdef NFS
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extern struct vfsops nfs_vfsops;
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#define NFS_VFSOPS &nfs_vfsops
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#else
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#define NFS_VFSOPS NULL
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#endif
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#ifdef FDESC
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extern struct vfsops fdesc_vfsops;
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#define FDESC_VFSOPS &fdesc_vfsops
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#else
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#define FDESC_VFSOPS NULL
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#endif
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#ifdef PORTAL
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extern struct vfsops portal_vfsops;
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#define PORTAL_VFSOPS &portal_vfsops
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#else
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#define PORTAL_VFSOPS NULL
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#endif
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#ifdef NULLFS
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extern struct vfsops null_vfsops;
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#define NULL_VFSOPS &null_vfsops
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#else
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#define NULL_VFSOPS NULL
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#endif
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#ifdef UMAPFS
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extern struct vfsops umap_vfsops;
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#define UMAP_VFSOPS &umap_vfsops
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#else
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#define UMAP_VFSOPS NULL
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#endif
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#ifdef KERNFS
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extern struct vfsops kernfs_vfsops;
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#define KERNFS_VFSOPS &kernfs_vfsops
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#else
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#define KERNFS_VFSOPS NULL
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#endif
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#ifdef PROCFS
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extern struct vfsops procfs_vfsops;
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#define PROCFS_VFSOPS &procfs_vfsops
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#else
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#define PROCFS_VFSOPS NULL
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#endif
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#ifdef AFS
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extern struct vfsops afs_vfsops;
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#define AFS_VFSOPS &afs_vfsops
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#else
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#define AFS_VFSOPS NULL
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#endif
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#ifdef CD9660
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extern struct vfsops cd9660_vfsops;
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#define CD9660_VFSOPS &cd9660_vfsops
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#else
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#define CD9660_VFSOPS NULL
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#endif
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#ifdef UNION
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extern struct vfsops union_vfsops;
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#define UNION_VFSOPS &union_vfsops
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#else
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#define UNION_VFSOPS NULL
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#endif
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struct vfsops *vfssw[] = {
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NULL, /* 0 = MOUNT_NONE */
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UFS_VFSOPS, /* 1 = MOUNT_UFS */
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NFS_VFSOPS, /* 2 = MOUNT_NFS */
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MFS_VFSOPS, /* 3 = MOUNT_MFS */
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NULL, /* 4 = MOUNT_PC */
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LFS_VFSOPS, /* 5 = MOUNT_LFS */
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NULL, /* 6 = MOUNT_LOFS */
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FDESC_VFSOPS, /* 7 = MOUNT_FDESC */
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PORTAL_VFSOPS, /* 8 = MOUNT_PORTAL */
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NULL_VFSOPS, /* 9 = MOUNT_NULL */
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UMAP_VFSOPS, /* 10 = MOUNT_UMAP */
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KERNFS_VFSOPS, /* 11 = MOUNT_KERNFS */
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PROCFS_VFSOPS, /* 12 = MOUNT_PROCFS */
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AFS_VFSOPS, /* 13 = MOUNT_AFS */
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CD9660_VFSOPS, /* 14 = MOUNT_CD9660 */
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UNION_VFSOPS, /* 15 = MOUNT_UNION */
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0
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};
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/*
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*
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* vfs_opv_descs enumerates the list of vnode classes, each with it's own
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* vnode operation vector. It is consulted at system boot to build operation
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* vectors. It is NULL terminated.
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*
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*/
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extern struct vnodeopv_desc ffs_vnodeop_opv_desc;
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extern struct vnodeopv_desc ffs_specop_opv_desc;
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extern struct vnodeopv_desc ffs_fifoop_opv_desc;
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extern struct vnodeopv_desc lfs_vnodeop_opv_desc;
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extern struct vnodeopv_desc lfs_specop_opv_desc;
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extern struct vnodeopv_desc lfs_fifoop_opv_desc;
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extern struct vnodeopv_desc mfs_vnodeop_opv_desc;
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extern struct vnodeopv_desc dead_vnodeop_opv_desc;
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extern struct vnodeopv_desc fifo_vnodeop_opv_desc;
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extern struct vnodeopv_desc spec_vnodeop_opv_desc;
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extern struct vnodeopv_desc nfsv2_vnodeop_opv_desc;
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extern struct vnodeopv_desc spec_nfsv2nodeop_opv_desc;
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extern struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc;
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extern struct vnodeopv_desc fdesc_vnodeop_opv_desc;
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extern struct vnodeopv_desc portal_vnodeop_opv_desc;
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extern struct vnodeopv_desc null_vnodeop_opv_desc;
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extern struct vnodeopv_desc umap_vnodeop_opv_desc;
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extern struct vnodeopv_desc kernfs_vnodeop_opv_desc;
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extern struct vnodeopv_desc procfs_vnodeop_opv_desc;
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extern struct vnodeopv_desc cd9660_vnodeop_opv_desc;
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extern struct vnodeopv_desc cd9660_specop_opv_desc;
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extern struct vnodeopv_desc cd9660_fifoop_opv_desc;
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extern struct vnodeopv_desc union_vnodeop_opv_desc;
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struct vnodeopv_desc *vfs_opv_descs[] = {
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&ffs_vnodeop_opv_desc,
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&ffs_specop_opv_desc,
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#ifdef FIFO
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&ffs_fifoop_opv_desc,
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#endif
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&dead_vnodeop_opv_desc,
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#ifdef FIFO
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&fifo_vnodeop_opv_desc,
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#endif
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&spec_vnodeop_opv_desc,
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#ifdef LFS
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&lfs_vnodeop_opv_desc,
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&lfs_specop_opv_desc,
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#ifdef FIFO
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&lfs_fifoop_opv_desc,
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#endif
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#endif
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#ifdef MFS
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&mfs_vnodeop_opv_desc,
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#endif
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#ifdef NFS
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&nfsv2_vnodeop_opv_desc,
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&spec_nfsv2nodeop_opv_desc,
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#ifdef FIFO
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&fifo_nfsv2nodeop_opv_desc,
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#endif
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#endif
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#ifdef FDESC
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&fdesc_vnodeop_opv_desc,
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#endif
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#ifdef PORTAL
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&portal_vnodeop_opv_desc,
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#endif
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#ifdef NULLFS
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&null_vnodeop_opv_desc,
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#endif
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#ifdef UMAPFS
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&umap_vnodeop_opv_desc,
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#endif
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#ifdef KERNFS
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&kernfs_vnodeop_opv_desc,
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#endif
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#ifdef PROCFS
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&procfs_vnodeop_opv_desc,
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#endif
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#ifdef CD9660
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&cd9660_vnodeop_opv_desc,
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&cd9660_specop_opv_desc,
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#ifdef FIFO
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&cd9660_fifoop_opv_desc,
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#endif
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#endif
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#ifdef UNION
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&union_vnodeop_opv_desc,
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#endif
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NULL
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};
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