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Fix another fine example of "if you make the kernel panic, it's 

more secure".
This commit is contained in:
pooka 2009-11-27 16:11:35 +00:00
parent 85fb4c9d18
commit 8b53d2f9df
1 changed files with 12 additions and 10 deletions
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22
sys/fs/hfs/hfs_vfsops.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: hfs_vfsops.c,v 1.22 2009/06/29 05:08:17 dholland Exp $ */
/* $NetBSD: hfs_vfsops.c,v 1.23 2009/11/27 16:11:35 pooka Exp $ */
/*-
* Copyright (c) 2005, 2007 The NetBSD Foundation, Inc.
@ -99,7 +99,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hfs_vfsops.c,v 1.22 2009/06/29 05:08:17 dholland Exp $");
__KERNEL_RCSID(0, "$NetBSD: hfs_vfsops.c,v 1.23 2009/11/27 16:11:35 pooka Exp $");
#ifdef _KERNEL_OPT
#include "opt_compat_netbsd.h"
@ -279,14 +279,16 @@ hfs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
* updating the mount is okay (for example, as far as securelevel goes)
* which leaves us with the normal check.
*/
accessmode = VREAD;
if (update ?
(mp->mnt_iflag & IMNT_WANTRDWR) != 0 :
(mp->mnt_flag & MNT_RDONLY) == 0)
accessmode |= VWRITE;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = genfs_can_mount(devvp, accessmode, l->l_cred);
VOP_UNLOCK(devvp, 0);
if (error == 0) {
accessmode = VREAD;
if (update ?
(mp->mnt_iflag & IMNT_WANTRDWR) != 0 :
(mp->mnt_flag & MNT_RDONLY) == 0)
accessmode |= VWRITE;
vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
error = genfs_can_mount(devvp, accessmode, l->l_cred);
VOP_UNLOCK(devvp, 0);
}
if (error != 0)
goto error;