[src/trunk]: src/sys/kern Return EINVAL when trying to create a device node w...

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

details:   https://anonhg.NetBSD.org/src/rev/ffc321b6952c
branches:  trunk
changeset: 766876:ffc321b6952c
user:      hannken <hannken%NetBSD.org@localhost>
date:      Sun Jul 03 15:25:09 2011 +0000

description:
Return EINVAL when trying to create a device node with "rdev == VNOVAL".

Fixes PR #45111 "tmpfs panic with mknod(2)".

diffstat:

 sys/kern/vfs_syscalls.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (27 lines):

diff -r c7da58b25c24 -r ffc321b6952c sys/kern/vfs_syscalls.c
--- a/sys/kern/vfs_syscalls.c   Sun Jul 03 15:24:49 2011 +0000
+++ b/sys/kern/vfs_syscalls.c   Sun Jul 03 15:25:09 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vfs_syscalls.c,v 1.430 2011/06/17 14:23:51 manu Exp $  */
+/*     $NetBSD: vfs_syscalls.c,v 1.431 2011/07/03 15:25:09 hannken Exp $       */
 
 /*-
  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -70,7 +70,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.430 2011/06/17 14:23:51 manu Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.431 2011/07/03 15:25:09 hannken Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_fileassoc.h"
@@ -1683,6 +1683,8 @@
                        break;
                }
        }
+       if (optype == VOP_MKNOD_DESCOFFSET && vattr.va_rdev == VNOVAL)
+               error = EINVAL;
        if (!error) {
                switch (optype) {
                case VOP_WHITEOUT_DESCOFFSET: