[src/trunk]: src/sys/fs/sysvbfs At least fetch mount data pointer before usin...

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2db4984cdb51
branches:  trunk
changeset: 792183:2db4984cdb51
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Wed Dec 25 11:15:49 2013 +0000

description:
At least fetch mount data pointer before using it.
Coverity CID 274767

diffstat:

 sys/fs/sysvbfs/sysvbfs_vfsops.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (35 lines):

diff -r 5f94aa1625ea -r 2db4984cdb51 sys/fs/sysvbfs/sysvbfs_vfsops.c
--- a/sys/fs/sysvbfs/sysvbfs_vfsops.c   Wed Dec 25 11:11:55 2013 +0000
+++ b/sys/fs/sysvbfs/sysvbfs_vfsops.c   Wed Dec 25 11:15:49 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sysvbfs_vfsops.c,v 1.41 2012/06/14 01:08:22 agc Exp $  */
+/*     $NetBSD: sysvbfs_vfsops.c,v 1.42 2013/12/25 11:15:49 mlelstv Exp $      */
 
 /*-
  * Copyright (c) 2004 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sysvbfs_vfsops.c,v 1.41 2012/06/14 01:08:22 agc Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sysvbfs_vfsops.c,v 1.42 2013/12/25 11:15:49 mlelstv Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -81,7 +81,7 @@
                return EINVAL;
 
        if (mp->mnt_flag & MNT_GETARGS) {
-               if ((bmp = (void *)mp->mnt_data) == NULL)
+               if ((bmp = (struct sysvbfs_mount *)mp->mnt_data) == NULL)
                        return EIO;
                args->fspec = NULL;
                *data_len = sizeof *args;
@@ -116,6 +116,7 @@
                         * Be sure we're still naming the same device
                         * used for our initial mount
                         */
+                       bmp = (struct sysvbfs_mount *)mp->mnt_data;
                        if (devvp != bmp->devvp)
                                error = EINVAL;
                }