diff options
| author | bde <bde@FreeBSD.org> | 1998-10-25 19:26:18 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 1998-10-25 19:26:18 +0000 |
| commit | 558766fa9415f59d49437a086cc1260d95828a0b (patch) | |
| tree | 05be5c55f69047b10ab0de43bf5c0ef6624703eb /sys/msdosfs | |
| parent | 9fafc4765300a0de262e82faff274b179b1c3772 (diff) | |
| download | FreeBSD-src-558766fa9415f59d49437a086cc1260d95828a0b.zip FreeBSD-src-558766fa9415f59d49437a086cc1260d95828a0b.tar.gz | |
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.
Diffstat (limited to 'sys/msdosfs')
| -rw-r--r-- | sys/msdosfs/msdosfs_vfsops.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/msdosfs/msdosfs_vfsops.c b/sys/msdosfs/msdosfs_vfsops.c index 42798d7..cf8f905 100644 --- a/sys/msdosfs/msdosfs_vfsops.c +++ b/sys/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); } |
