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authorTheo de Raadt <deraadt@cvs.openbsd.org>1998-11-20 16:56:00 +0000
committerTheo de Raadt <deraadt@cvs.openbsd.org>1998-11-20 16:56:00 +0000
commit2d12691ba8fdc3ede682783181161000dc15764a (patch)
tree6e40ed0ec99dc155f5fb8ff56fb14f1af18e3e3c /sys/dev/pci/brooktree848.c
parent325fbd57644bbd42071be327eaf8862f81860107 (diff)
careful mmap
Diffstat (limited to 'sys/dev/pci/brooktree848.c')
-rw-r--r--sys/dev/pci/brooktree848.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/dev/pci/brooktree848.c b/sys/dev/pci/brooktree848.c
index b94ceea25ae..0bf1be76596 100644
--- a/sys/dev/pci/brooktree848.c
+++ b/sys/dev/pci/brooktree848.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: brooktree848.c,v 1.4 1998/10/10 06:39:23 downsj Exp $ */
+/* $OpenBSD: brooktree848.c,v 1.5 1998/11/20 16:55:59 deraadt Exp $ */
/* $FreeBSD: brooktree848.c,v 1.56 1998/10/01 09:35:48 sos Exp $ */
/* BT848 Driver for Brooktree's Bt848 based cards.
The Brooktree BT848 Driver driver is based upon Mark Tinguely and
@@ -3394,6 +3394,8 @@ bktr_mmap( dev_t dev, int offset, int nprot )
if (nprot & PROT_EXEC)
return( -1 );
+ if (offset < 0)
+ return (-1);
if (offset >= bktr->alloc_pages * PAGE_SIZE)
return( -1 );