[src/trunk]: src/sys/fs/puffs Make sure that pa_spare is zero-filled and does...

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

details:   https://anonhg.NetBSD.org/src/rev/183cbf045d82
branches:  trunk
changeset: 756077:183cbf045d82
user:      pooka <pooka%NetBSD.org@localhost>
date:      Tue Jul 06 12:05:18 2010 +0000

description:
Make sure that pa_spare is zero-filled and does not contain any
garbage which might disrupt future use.

diffstat:

 sys/fs/puffs/puffs_vfsops.c |  13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diffs (34 lines):

diff -r 2aea8bf1eaf1 -r 183cbf045d82 sys/fs/puffs/puffs_vfsops.c
--- a/sys/fs/puffs/puffs_vfsops.c       Tue Jul 06 11:56:20 2010 +0000
+++ b/sys/fs/puffs/puffs_vfsops.c       Tue Jul 06 12:05:18 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: puffs_vfsops.c,v 1.90 2010/06/24 13:03:10 hannken Exp $        */
+/*     $NetBSD: puffs_vfsops.c,v 1.91 2010/07/06 12:05:18 pooka Exp $  */
 
 /*
  * Copyright (c) 2005, 2006  Antti Kantee.  All Rights Reserved.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: puffs_vfsops.c,v 1.90 2010/06/24 13:03:10 hannken Exp $");
+__KERNEL_RCSID(0, "$NetBSD: puffs_vfsops.c,v 1.91 2010/07/06 12:05:18 pooka Exp $");
 
 #include <sys/param.h>
 #include <sys/mount.h>
@@ -129,6 +129,15 @@
                goto out;
        }
 
+       for (i = 0; i < __arraycount(args->pa_spare); i++) {
+               if (args->pa_spare[i] != 0) {
+                       printf("puffs_mount: pa_spare[%d] = 0x%x\n",
+                           i, args->pa_spare[i]);
+                       error = EINVAL;
+                       goto out;
+               }
+       }
+
        /* use dummy value for passthrough */
        if (args->pa_fhflags & PUFFS_FHFLAG_PASSTHROUGH)
                args->pa_fhsize = sizeof(struct fid);