linux-kernel - [PATCH 3/8] UML - audio driver locking

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [day] [month] [year] [list]

Date:	Mon, 01 Jan 2007 14:47:09 -0500
From:	Jeff Dike <jdike@...toit.com>
To:	akpm@...l.org
cc:	linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net
Subject: [PATCH 3/8] UML - audio driver locking

Comment the lack of locking and make a couple of variables static.

Signed-off-by: Jeff Dike <jdike@...toit.com>
--
 arch/um/drivers/hostaudio_kern.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

Index: linux-2.6.18-mm/arch/um/drivers/hostaudio_kern.c
===================================================================
--- linux-2.6.18-mm.orig/arch/um/drivers/hostaudio_kern.c	2006-12-29 18:25:36.000000000 -0500
+++ linux-2.6.18-mm/arch/um/drivers/hostaudio_kern.c	2006-12-29 21:09:09.000000000 -0500
@@ -25,9 +25,12 @@ struct hostmixer_state {
 #define HOSTAUDIO_DEV_DSP "/dev/sound/dsp"
 #define HOSTAUDIO_DEV_MIXER "/dev/sound/mixer"
 
-/* Only changed from linux_main at boot time */
-char *dsp = HOSTAUDIO_DEV_DSP;
-char *mixer = HOSTAUDIO_DEV_MIXER;
+/* Changed either at boot time or module load time.  At boot, this is
+ * single-threaded; at module load, multiple modules would each have
+ * their own copy of these variables.
+ */
+static char *dsp = HOSTAUDIO_DEV_DSP;
+static char *mixer = HOSTAUDIO_DEV_MIXER;
 
 #define DSP_HELP \
 "    This is used to specify the host dsp device to the hostaudio driver.\n" \

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/