Module Name: src
Committed By: martin
Date: Mon Oct 28 19:12:18 UTC 2019
Modified Files:
src/sys/dev [netbsd-8]: audio.c
Log Message:
Apply patch, requested by nat in ticket #1419:
PR kern/54547:
do not allow mmap() of audio devices that have not been opened for r/w.
To generate a diff of this commit:
cvs rdiff -u -r1.357.2.13 -r1.357.2.14 src/sys/dev/audio.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/audio.c
diff -u src/sys/dev/audio.c:1.357.2.13 src/sys/dev/audio.c:1.357.2.14
--- src/sys/dev/audio.c:1.357.2.13 Thu Jun 7 18:24:16 2018
+++ src/sys/dev/audio.c Mon Oct 28 19:12:17 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: audio.c,v 1.357.2.13 2018/06/07 18:24:16 martin Exp $ */
+/* $NetBSD: audio.c,v 1.357.2.14 2019/10/28 19:12:17 martin Exp $ */
/*-
* Copyright (c) 2016 Nathanial Sloss <[email protected]>
@@ -148,7 +148,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.357.2.13 2018/06/07 18:24:16 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: audio.c,v 1.357.2.14 2019/10/28 19:12:17 martin Exp $");
#ifdef _KERNEL_OPT
#include "audio.h"
@@ -3521,6 +3521,9 @@ audio_mmap(struct audio_softc *sc, off_t
if (!(audio_get_props(sc) & AUDIO_PROP_MMAP))
return ENOTSUP;
+ if (vc->sc_open != AUOPEN_WRITE)
+ return EINVAL;
+
if (*offp < 0)
return EINVAL;
