diff options
author | Bruce Evans <bde@FreeBSD.org> | 1998-10-25 19:26:18 +0000 |
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committer | Bruce Evans <bde@FreeBSD.org> | 1998-10-25 19:26:18 +0000 |
commit | 65baf8f06be716fc398b13c46e97cc7eab2bb5f0 (patch) | |
tree | 58a855fd5434c8a7e732c191547e3286bbfc4205 /sys/fs | |
parent | 9cd93b3aecdc2272aaff51808129066e8e34281d (diff) | |
download | src-65baf8f06be716fc398b13c46e97cc7eab2bb5f0.tar.gz src-65baf8f06be716fc398b13c46e97cc7eab2bb5f0.zip |
Don't follow null bdevsw pointers. The `major(dev) < nblkdev' test rotted
when bdevsw[] became sparse. We still depend on magic to avoid having to
check that (v_rdev) device numbers in vnodes are not NODEV.
Notes
Notes:
svn path=/head/; revision=40651
Diffstat (limited to 'sys/fs')
-rw-r--r-- | sys/fs/cd9660/cd9660_vfsops.c | 5 | ||||
-rw-r--r-- | sys/fs/msdosfs/msdosfs_vfsops.c | 6 |
2 files changed, 7 insertions, 4 deletions
diff --git a/sys/fs/cd9660/cd9660_vfsops.c b/sys/fs/cd9660/cd9660_vfsops.c index fb877ca1a412..69e3ebd0c748 100644 --- a/sys/fs/cd9660/cd9660_vfsops.c +++ b/sys/fs/cd9660/cd9660_vfsops.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)cd9660_vfsops.c 8.18 (Berkeley) 5/22/95 - * $Id: cd9660_vfsops.c,v 1.43 1998/09/07 13:17:00 bde Exp $ + * $Id: cd9660_vfsops.c,v 1.44 1998/09/14 19:56:39 sos Exp $ */ #include <sys/param.h> @@ -229,7 +229,8 @@ cd9660_mount(mp, path, data, ndp, p) vrele(devvp); return ENOTBLK; } - if (major(devvp->v_rdev) >= nblkdev) { + if (major(devvp->v_rdev) >= nblkdev || + bdevsw[major(devvp->v_rdev)] == NULL) { vrele(devvp); return ENXIO; } diff --git a/sys/fs/msdosfs/msdosfs_vfsops.c b/sys/fs/msdosfs/msdosfs_vfsops.c index 42798d765e7b..cf8f9059696d 100644 --- a/sys/fs/msdosfs/msdosfs_vfsops.c +++ b/sys/fs/msdosfs/msdosfs_vfsops.c @@ -1,4 +1,4 @@ -/* $Id: msdosfs_vfsops.c,v 1.35 1998/05/06 05:29:38 msmith Exp $ */ +/* $Id: msdosfs_vfsops.c,v 1.36 1998/09/07 13:17:02 bde Exp $ */ /* $NetBSD: msdosfs_vfsops.c,v 1.51 1997/11/17 15:36:58 ws Exp $ */ /*- @@ -50,6 +50,7 @@ #include <sys/param.h> #include <sys/systm.h> +#include <sys/conf.h> #include <sys/namei.h> #include <sys/proc.h> #include <sys/kernel.h> @@ -297,7 +298,8 @@ msdosfs_mount(mp, path, data, ndp, p) vrele(devvp); return (ENOTBLK); } - if (major(devvp->v_rdev) >= nblkdev) { + if (major(devvp->v_rdev) >= nblkdev || + bdevsw[major(devvp->v_rdev)] == NULL) { vrele(devvp); return (ENXIO); } |