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[2/2] ossaudio: check for oss support in oss_audio_init

Message ID 1383823947-5132-3-git-send-email-kraxel@redhat.com
State New
Headers show

Commit Message

Gerd Hoffmann Nov. 7, 2013, 11:32 a.m. UTC 
Check whenever the device path (/dev/dsp by default) exists and qemu is
allowed to access it.  Return NULL if it isn't, so ossaudio will not
be used on systems wihtout oss support (increasinly common on modern
linux systems).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 audio/ossaudio.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/audio/ossaudio.c b/audio/ossaudio.c
index 007c641..5a73716 100644
--- a/audio/ossaudio.c
+++ b/audio/ossaudio.c
@@ -849,6 +849,10 @@  static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...)
 
 static void *oss_audio_init (void)
 {
+    if (access(conf.devpath_in, R_OK | W_OK) < 0 ||
+        access(conf.devpath_out, R_OK | W_OK) < 0) {
+        return NULL;
+    }
     return &conf;
 }