From e3af0032b236dc52d4a74c4d740e57a1f6d520aa Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Sat, 7 Nov 2009 18:55:16 +0100 Subject: set the close-on-exec flag on all file descriptors Added the "fd_util" library, which attempts to use the new thread-safe Linux system calls pipe2(), accept4() and the options O_CLOEXEC, SOCK_CLOEXEC. Without these, it falls back to FD_CLOEXEC, which is not thread safe. This is particularly important for the "pipe" output plugin (and others, such as JACK/PulseAudio), because we were heavily leaking file descriptors to child processes. --- src/output/fifo_output_plugin.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'src/output/fifo_output_plugin.c') diff --git a/src/output/fifo_output_plugin.c b/src/output/fifo_output_plugin.c index d3145748..0217c267 100644 --- a/src/output/fifo_output_plugin.c +++ b/src/output/fifo_output_plugin.c @@ -20,6 +20,7 @@ #include "output_api.h" #include "utils.h" #include "timer.h" +#include "fd_util.h" #include @@ -152,7 +153,7 @@ fifo_open(struct fifo_data *fd, GError **error) if (!fifo_check(fd, error)) return false; - fd->input = open(fd->path, O_RDONLY|O_NONBLOCK); + fd->input = open_cloexec(fd->path, O_RDONLY|O_NONBLOCK); if (fd->input < 0) { g_set_error(error, fifo_output_quark(), errno, "Could not open FIFO \"%s\" for reading: %s", @@ -161,7 +162,7 @@ fifo_open(struct fifo_data *fd, GError **error) return false; } - fd->output = open(fd->path, O_WRONLY|O_NONBLOCK); + fd->output = open_cloexec(fd->path, O_WRONLY|O_NONBLOCK); if (fd->output < 0) { g_set_error(error, fifo_output_quark(), errno, "Could not open FIFO \"%s\" for writing: %s", -- cgit v1.2.3