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[Qemu-commits] [COMMIT 2182349] oss: Unbreak mmaping the ability to mmap
From: |
Anthony Liguori |
Subject: |
[Qemu-commits] [COMMIT 2182349] oss: Unbreak mmaping the ability to mmap oss fd onLinux |
Date: |
Fri, 11 Sep 2009 23:37:28 -0000 |
From: malc <address@hidden>
Signed-off-by: malc <address@hidden>
diff --git a/audio/ossaudio.c b/audio/ossaudio.c
index 18152b5..e4f90f2 100644
--- a/audio/ossaudio.c
+++ b/audio/ossaudio.c
@@ -205,13 +205,16 @@ static int oss_open (int in, struct oss_params *req,
struct oss_params *obt, int *pfd)
{
int fd;
+ int oflags;
int mmmmssss;
audio_buf_info abinfo;
int fmt, freq, nchannels;
const char *dspname = in ? conf.devpath_in : conf.devpath_out;
const char *typ = in ? "ADC" : "DAC";
- fd = open (dspname, (in ? O_RDONLY : O_WRONLY) | O_NONBLOCK);
+ /* Kludge needed to have working mmap on Linux */
+ oflags = conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY);
+ fd = open (dspname, oflags | O_NONBLOCK);
if (-1 == fd) {
oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname);
return -1;
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