From: Eric Wong <e...@80x24.org>
When accepting keyboard input, it is possible for select() to
return a false-positive with spurious wakeups from inside the
update_status callback.
Using the FIONREAD ioctl in place of select is also a possibility,
but may be less portable.
---
src/sox.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/sox.c b/src/sox.c
index 9412614e..6b35041b 100644
--- a/src/sox.c
+++ b/src/sox.c
@@ -1804,6 +1804,18 @@ static int process(void)
tcsetattr(fileno(stdin), TCSANOW, &modified_termios);
}
#endif
+#if defined(F_GETFL) && defined(F_SETFL) && defined(O_NONBLOCK)
+ if (interactive) {
+ int fd = fileno(stdin);
+ int flags = fcntl(fd, F_GETFL);
+ if (flags == -1) {
+ lsx_warn("error getting flags on stdin descriptor: %s", strerror(errno));
+ } else if (!(flags & O_NONBLOCK)) {
+ if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
+ lsx_warn("error setting non-blocking on stdin: %s", strerror(errno));
+ }
+ }
+#endif
setsig(SIGTERM, sigint); /* Stop gracefully, as soon as we possibly can. */
setsig(SIGINT , sigint); /* Either skip current input or behave as SIGTERM.
*/
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