[src/netbsd-1-4]: src/sys/compat/linux/common Pull up revision 1.29 (requeste...

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

details:   https://anonhg.NetBSD.org/src/rev/6d10e15cf04b
branches:  netbsd-1-4
changeset: 470889:6d10e15cf04b
user:      he <he%NetBSD.org@localhost>
date:      Sat Sep 09 15:54:38 2000 +0000

description:
Pull up revision 1.29 (requested by simonb):
  More carefully check length of user-supplied data, in particular
  make sure we don't overrun the available stack gap in stack gap
  allocations.

diffstat:

 sys/compat/linux/common/linux_file.c |  5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diffs (21 lines):

diff -r 2f68723d9050 -r 6d10e15cf04b sys/compat/linux/common/linux_file.c
--- a/sys/compat/linux/common/linux_file.c      Sat Sep 09 15:54:17 2000 +0000
+++ b/sys/compat/linux/common/linux_file.c      Sat Sep 09 15:54:38 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_file.c,v 1.27 1999/02/09 20:37:19 christos Exp $ */
+/*     $NetBSD: linux_file.c,v 1.27.2.1 2000/09/09 15:54:38 he Exp $   */
 
 /*-
  * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
@@ -494,10 +494,9 @@
        struct linux_sys_stat_args *uap = v;
 
        sg = stackgap_init(p->p_emul);
-
+       st = stackgap_alloc(&sg, sizeof (struct stat));
        LINUX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
 
-       st = stackgap_alloc(&sg, sizeof (struct stat));
        SCARG(&sa, ub) = st;
        SCARG(&sa, path) = SCARG(uap, path);