mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-13 10:02:38 +00:00
Implemented filesystem clean bit via:
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.
This commit is contained in:
David Greenman
parent
d90963f5e4
commit
e0e9c42112
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=2152
@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
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* $Id: machdep.c,v 1.53 1994/08/18 22:34:40 wollman Exp $
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* $Id: machdep.c,v 1.54 1994/08/19 11:45:15 davidg Exp $
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*/
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#include "npx.h"
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@ -676,7 +676,6 @@ boot(arghowto)
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register int howto; /* r11 == how to boot */
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register int devtype; /* r10 == major of root dev */
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extern int cold;
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int nomsg = 1;
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if (cold) {
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printf("hit reset please");
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@ -689,20 +688,13 @@ boot(arghowto)
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waittime = 0;
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(void) splnet();
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printf("syncing disks... ");
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printf("\nsyncing disks... ");
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/*
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* Release inodes held by texts before update.
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*/
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if (panicstr == 0)
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vnode_pager_umount(NULL);
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sync(curproc, NULL, NULL);
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/*
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* Unmount filesystems
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*/
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#if 0
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if (panicstr == 0)
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vfs_unmountall();
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#endif
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for (iter = 0; iter < 20; iter++) {
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nbusy = 0;
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@ -711,18 +703,24 @@ boot(arghowto)
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nbusy++;
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if (nbusy == 0)
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break;
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if (nomsg) {
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printf("updating disks before rebooting... ");
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nomsg = 0;
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}
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printf("%d ", nbusy);
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DELAY(40000 * iter);
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}
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if (nbusy)
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if (nbusy) {
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/*
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* Failed to sync all blocks. Indicate this and don't
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* unmount filesystems (thus forcing an fsck on reboot).
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*/
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printf("giving up\n");
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else
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} else {
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printf("done\n");
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DELAY(10000); /* wait for printf to finish */
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/*
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* Unmount filesystems
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*/
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if (panicstr == 0)
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vfs_unmountall();
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}
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DELAY(100000); /* wait for console output to finish */
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}
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splhigh();
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devtype = major(rootdev);
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)cd9660_vfsops.c 8.3 (Berkeley) 1/31/94
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* $Id: cd9660_vfsops.c,v 1.3 1994/08/02 07:41:33 davidg Exp $
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* $Id: cd9660_vfsops.c,v 1.4 1994/08/20 03:48:45 davidg Exp $
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*/
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#include <sys/param.h>
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@ -403,7 +403,7 @@ cd9660_unmount(mp, mntflags, p)
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int i, error, ronly, flags = 0;
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if (mntflags & MNT_FORCE) {
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if (!iso_doforce || (mp->mnt_flag & MNT_ROOTFS))
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if (!iso_doforce)
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return (EINVAL);
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flags |= FORCECLOSE;
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}
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@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)machdep.c 7.4 (Berkeley) 6/3/91
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* $Id: machdep.c,v 1.53 1994/08/18 22:34:40 wollman Exp $
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* $Id: machdep.c,v 1.54 1994/08/19 11:45:15 davidg Exp $
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*/
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#include "npx.h"
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@ -676,7 +676,6 @@ boot(arghowto)
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register int howto; /* r11 == how to boot */
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register int devtype; /* r10 == major of root dev */
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extern int cold;
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int nomsg = 1;
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if (cold) {
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printf("hit reset please");
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@ -689,20 +688,13 @@ boot(arghowto)
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waittime = 0;
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(void) splnet();
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printf("syncing disks... ");
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printf("\nsyncing disks... ");
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/*
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* Release inodes held by texts before update.
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*/
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if (panicstr == 0)
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vnode_pager_umount(NULL);
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sync(curproc, NULL, NULL);
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/*
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* Unmount filesystems
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*/
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#if 0
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if (panicstr == 0)
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vfs_unmountall();
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#endif
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for (iter = 0; iter < 20; iter++) {
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nbusy = 0;
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@ -711,18 +703,24 @@ boot(arghowto)
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nbusy++;
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if (nbusy == 0)
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break;
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if (nomsg) {
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printf("updating disks before rebooting... ");
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nomsg = 0;
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}
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printf("%d ", nbusy);
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DELAY(40000 * iter);
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}
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if (nbusy)
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if (nbusy) {
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/*
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* Failed to sync all blocks. Indicate this and don't
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* unmount filesystems (thus forcing an fsck on reboot).
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*/
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printf("giving up\n");
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else
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} else {
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printf("done\n");
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DELAY(10000); /* wait for printf to finish */
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/*
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* Unmount filesystems
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*/
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if (panicstr == 0)
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vfs_unmountall();
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}
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DELAY(100000); /* wait for console output to finish */
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}
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splhigh();
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devtype = major(rootdev);
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)cd9660_vfsops.c 8.3 (Berkeley) 1/31/94
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* $Id: cd9660_vfsops.c,v 1.3 1994/08/02 07:41:33 davidg Exp $
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* $Id: cd9660_vfsops.c,v 1.4 1994/08/20 03:48:45 davidg Exp $
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*/
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#include <sys/param.h>
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@ -403,7 +403,7 @@ cd9660_unmount(mp, mntflags, p)
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int i, error, ronly, flags = 0;
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if (mntflags & MNT_FORCE) {
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if (!iso_doforce || (mp->mnt_flag & MNT_ROOTFS))
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if (!iso_doforce)
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return (EINVAL);
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flags |= FORCECLOSE;
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}
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@ -31,7 +31,7 @@
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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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* $Id$
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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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@ -48,10 +48,6 @@
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int (*mountroot)() = ffs_mountroot;
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#endif
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/*
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* These define the root filesystem and device.
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*/
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struct mount *rootfs;
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struct vnode *rootvnode;
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/*
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)vfs_subr.c 8.13 (Berkeley) 4/18/94
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* $Id: vfs_subr.c,v 1.3 1994/08/02 07:43:27 davidg Exp $
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* $Id: vfs_subr.c,v 1.4 1994/08/18 22:35:09 wollman Exp $
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*/
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/*
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@ -169,6 +169,70 @@ vfs_unbusy(mp)
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}
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}
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void
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vfs_unmountroot(rootfs)
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struct mount *rootfs;
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{
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struct mount *mp = rootfs;
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int error;
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if (vfs_busy(mp)) {
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printf("failed to unmount root\n");
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return;
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}
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mp->mnt_flag |= MNT_UNMOUNT;
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if (error = vfs_lock(mp)) {
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printf("lock of root filesystem failed (%d)\n", error);
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return;
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}
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vnode_pager_umount(mp); /* release cached vnodes */
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cache_purgevfs(mp); /* remove cache entries for this file sys */
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if (error = VFS_SYNC(mp, MNT_WAIT, initproc->p_ucred, initproc))
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printf("sync of root filesystem failed (%d)\n", error);
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if (error = VFS_UNMOUNT(mp, MNT_FORCE, initproc))
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printf("unmount of root filesystem failed (%d)\n", error);
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mp->mnt_flag &= ~MNT_UNMOUNT;
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vfs_unbusy(mp);
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}
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/*
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* Unmount all filesystems. Should only be called by halt().
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*/
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void
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vfs_unmountall()
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{
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struct mount *mp, *mp_next, *rootfs = NULL;
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int error;
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/* unmount all but rootfs */
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for (mp = mountlist.tqh_first; mp != NULL; mp = mp_next) {
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mp_next = mp->mnt_list.tqe_next;
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if (mp->mnt_flag & MNT_ROOTFS) {
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rootfs = mp;
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continue;
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}
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error = dounmount(mp, MNT_FORCE, initproc);
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if (error) {
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printf("unmount of %s failed (%d)\n",
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mp->mnt_stat.f_mntonname, error);
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}
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}
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/* and finally... */
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if (rootfs) {
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vfs_unmountroot(rootfs);
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} else {
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printf("no root filesystem\n");
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}
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}
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/*
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* Lookup a mount point by filesystem identifier.
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*/
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
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* $Id$
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* $Id: vfs_syscalls.c,v 1.3 1994/08/02 07:43:31 davidg Exp $
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*/
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#include <sys/param.h>
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@ -238,6 +238,13 @@ unmount(p, uap, retval)
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}
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mp = vp->v_mount;
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vput(vp);
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/*
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* Don't allow unmount of the root filesystem
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*/
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if (mp->mnt_flag & MNT_ROOTFS)
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return (EINVAL);
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return (dounmount(mp, uap->flags, p));
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}
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@ -31,7 +31,7 @@
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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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* $Id$
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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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@ -48,10 +48,6 @@
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int (*mountroot)() = ffs_mountroot;
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#endif
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/*
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* These define the root filesystem and device.
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*/
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struct mount *rootfs;
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struct vnode *rootvnode;
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/*
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)vfs_subr.c 8.13 (Berkeley) 4/18/94
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* $Id: vfs_subr.c,v 1.3 1994/08/02 07:43:27 davidg Exp $
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* $Id: vfs_subr.c,v 1.4 1994/08/18 22:35:09 wollman Exp $
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*/
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/*
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@ -169,6 +169,70 @@ vfs_unbusy(mp)
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}
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}
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void
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vfs_unmountroot(rootfs)
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struct mount *rootfs;
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{
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struct mount *mp = rootfs;
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int error;
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if (vfs_busy(mp)) {
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printf("failed to unmount root\n");
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return;
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}
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mp->mnt_flag |= MNT_UNMOUNT;
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if (error = vfs_lock(mp)) {
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printf("lock of root filesystem failed (%d)\n", error);
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return;
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}
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vnode_pager_umount(mp); /* release cached vnodes */
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cache_purgevfs(mp); /* remove cache entries for this file sys */
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if (error = VFS_SYNC(mp, MNT_WAIT, initproc->p_ucred, initproc))
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printf("sync of root filesystem failed (%d)\n", error);
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if (error = VFS_UNMOUNT(mp, MNT_FORCE, initproc))
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printf("unmount of root filesystem failed (%d)\n", error);
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mp->mnt_flag &= ~MNT_UNMOUNT;
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vfs_unbusy(mp);
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}
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/*
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* Unmount all filesystems. Should only be called by halt().
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*/
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void
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vfs_unmountall()
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{
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struct mount *mp, *mp_next, *rootfs = NULL;
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int error;
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/* unmount all but rootfs */
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for (mp = mountlist.tqh_first; mp != NULL; mp = mp_next) {
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mp_next = mp->mnt_list.tqe_next;
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if (mp->mnt_flag & MNT_ROOTFS) {
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rootfs = mp;
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continue;
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}
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error = dounmount(mp, MNT_FORCE, initproc);
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if (error) {
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printf("unmount of %s failed (%d)\n",
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mp->mnt_stat.f_mntonname, error);
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}
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}
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|
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/* and finally... */
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if (rootfs) {
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vfs_unmountroot(rootfs);
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} else {
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printf("no root filesystem\n");
|
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}
|
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}
|
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|
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/*
|
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* Lookup a mount point by filesystem identifier.
|
||||
*/
|
||||
|
||||
@ -36,7 +36,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)vfs_syscalls.c 8.13 (Berkeley) 4/15/94
|
||||
* $Id$
|
||||
* $Id: vfs_syscalls.c,v 1.3 1994/08/02 07:43:31 davidg Exp $
|
||||
*/
|
||||
|
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#include <sys/param.h>
|
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@ -238,6 +238,13 @@ unmount(p, uap, retval)
|
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}
|
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mp = vp->v_mount;
|
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vput(vp);
|
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|
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/*
|
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* Don't allow unmount of the root filesystem
|
||||
*/
|
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if (mp->mnt_flag & MNT_ROOTFS)
|
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return (EINVAL);
|
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|
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return (dounmount(mp, uap->flags, p));
|
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}
|
||||
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs_vfsops.c 8.3 (Berkeley) 1/4/94
|
||||
* $Id$
|
||||
* $Id: nfs_vfsops.c,v 1.2 1994/08/02 07:52:16 davidg Exp $
|
||||
*/
|
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|
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#include <sys/param.h>
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@ -542,7 +542,7 @@ nfs_unmount(mp, mntflags, p)
|
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extern int doforce;
|
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|
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if (mntflags & MNT_FORCE) {
|
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if (!doforce || (mp->mnt_flag & MNT_ROOTFS))
|
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if (!doforce)
|
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return (EINVAL);
|
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flags |= FORCECLOSE;
|
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}
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs_vfsops.c 8.3 (Berkeley) 1/4/94
|
||||
* $Id$
|
||||
* $Id: nfs_vfsops.c,v 1.2 1994/08/02 07:52:16 davidg Exp $
|
||||
*/
|
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|
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#include <sys/param.h>
|
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@ -542,7 +542,7 @@ nfs_unmount(mp, mntflags, p)
|
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extern int doforce;
|
||||
|
||||
if (mntflags & MNT_FORCE) {
|
||||
if (!doforce || (mp->mnt_flag & MNT_ROOTFS))
|
||||
if (!doforce)
|
||||
return (EINVAL);
|
||||
flags |= FORCECLOSE;
|
||||
}
|
||||
|
||||
@ -31,7 +31,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)mount.h 8.13 (Berkeley) 3/27/94
|
||||
* $Id$
|
||||
* $Id: mount.h,v 1.2 1994/08/02 07:53:15 davidg Exp $
|
||||
*/
|
||||
|
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#ifndef KERNEL
|
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@ -407,6 +407,7 @@ extern struct vfsops *vfssw[]; /* filesystem type table */
|
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#include <sys/cdefs.h>
|
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|
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__BEGIN_DECLS
|
||||
int dounmount __P((struct mount *, int, struct proc *));
|
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int fstatfs __P((int, struct statfs *));
|
||||
int getfh __P((const char *, fhandle_t *));
|
||||
int getfsstat __P((struct statfs *, long, int));
|
||||
|
||||
@ -31,7 +31,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)ffs_vfsops.c 8.8 (Berkeley) 4/18/94
|
||||
* $Id: ffs_vfsops.c,v 1.3 1994/08/02 07:54:24 davidg Exp $
|
||||
* $Id: ffs_vfsops.c,v 1.4 1994/08/18 22:35:54 wollman Exp $
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
@ -177,6 +177,10 @@ ffs_mount(mp, path, data, ndp, p)
|
||||
return (error);
|
||||
if (fs->fs_ronly && (mp->mnt_flag & MNT_WANTRDWR))
|
||||
fs->fs_ronly = 0;
|
||||
if (fs->fs_ronly == 0) {
|
||||
fs->fs_clean = 0;
|
||||
ffs_sbupdate(ump, MNT_WAIT);
|
||||
}
|
||||
if (args.fspec == 0) {
|
||||
/*
|
||||
* Process export requests.
|
||||
@ -394,8 +398,13 @@ ffs_mountfs(devvp, mp, p)
|
||||
bp = NULL;
|
||||
fs = ump->um_fs;
|
||||
fs->fs_ronly = ronly;
|
||||
if (ronly == 0)
|
||||
if (!fs->fs_clean) {
|
||||
printf("WARNING: %s was not properly dismounted\n",fs->fs_fsmnt);
|
||||
}
|
||||
if (ronly == 0) {
|
||||
fs->fs_fmod = 1;
|
||||
fs->fs_clean = 0;
|
||||
}
|
||||
blks = howmany(fs->fs_cssize, fs->fs_fsize);
|
||||
base = space = malloc((u_long)fs->fs_cssize, M_UFSMNT,
|
||||
M_WAITOK);
|
||||
@ -430,6 +439,8 @@ ffs_mountfs(devvp, mp, p)
|
||||
ump->um_quotas[i] = NULLVP;
|
||||
devvp->v_specflags |= SI_MOUNTEDON;
|
||||
ffs_oldfscompat(fs);
|
||||
if (ronly == 0)
|
||||
ffs_sbupdate(ump, MNT_WAIT);
|
||||
return (0);
|
||||
out:
|
||||
if (bp)
|
||||
@ -487,15 +498,17 @@ ffs_unmount(mp, mntflags, p)
|
||||
|
||||
flags = 0;
|
||||
if (mntflags & MNT_FORCE) {
|
||||
if (mp->mnt_flag & MNT_ROOTFS)
|
||||
return (EINVAL);
|
||||
flags |= FORCECLOSE;
|
||||
}
|
||||
if (error = ffs_flushfiles(mp, flags, p))
|
||||
return (error);
|
||||
ump = VFSTOUFS(mp);
|
||||
fs = ump->um_fs;
|
||||
ronly = !fs->fs_ronly;
|
||||
ronly = fs->fs_ronly;
|
||||
if (!ronly) {
|
||||
fs->fs_clean = 1;
|
||||
ffs_sbupdate(ump, MNT_WAIT);
|
||||
}
|
||||
ump->um_devvp->v_specflags &= ~SI_MOUNTEDON;
|
||||
error = VOP_CLOSE(ump->um_devvp, ronly ? FREAD : FREAD|FWRITE,
|
||||
NOCRED, p);
|
||||
|
||||
@ -31,7 +31,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)lfs_vfsops.c 8.7 (Berkeley) 4/16/94
|
||||
* $Id: lfs_vfsops.c,v 1.3 1994/08/02 07:54:38 davidg Exp $
|
||||
* $Id: lfs_vfsops.c,v 1.4 1994/08/20 03:49:02 davidg Exp $
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
@ -326,7 +326,7 @@ lfs_unmount(mp, mntflags, p)
|
||||
|
||||
flags = 0;
|
||||
if (mntflags & MNT_FORCE) {
|
||||
if (!doforce || (mp->mnt_flag & MNT_ROOTFS))
|
||||
if (!doforce)
|
||||
return (EINVAL);
|
||||
flags |= FORCECLOSE;
|
||||
}
|
||||
@ -358,7 +358,7 @@ lfs_unmount(mp, mntflags, p)
|
||||
vrele(fs->lfs_ivnode);
|
||||
vgone(fs->lfs_ivnode);
|
||||
|
||||
ronly = !fs->lfs_ronly;
|
||||
ronly = fs->lfs_ronly;
|
||||
ump->um_devvp->v_specflags &= ~SI_MOUNTEDON;
|
||||
error = VOP_CLOSE(ump->um_devvp,
|
||||
ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user