Open with O_NONBLOCK to avoid hanging on open().
diff --git a/Modules/ossaudiodev.c b/Modules/ossaudiodev.c
index 2f4693d..0777840 100644
--- a/Modules/ossaudiodev.c
+++ b/Modules/ossaudiodev.c
@@ -131,7 +131,11 @@
basedev = "/dev/dsp";
}
- if ((fd = open(basedev, imode)) == -1) {
+ /* Open with O_NONBLOCK to avoid hanging on devices that only allow
+ one open at a time. This does *not* affect later I/O; OSS
+ provides a special ioctl() for non-blocking read/write, which is
+ exposed via oss_nonblock() below. */
+ if ((fd = open(basedev, imode|O_NONBLOCK)) == -1) {
PyErr_SetFromErrnoWithFilename(PyExc_IOError, basedev);
return NULL;
}