[PATCH weston 2/2 v3] weston-launch: return better value if weston dies because of a signal
Kristian Høgsberg
hoegsberg at gmail.com
Tue Mar 19 11:29:07 PDT 2013
On Sun, Mar 10, 2013 at 03:14:01PM +0100, Philipp Brüschweiler wrote:
> Before this commit, weston-launch returned 0 if weston was killed by a
> signal. This makes it hard to automatically test weston by using
> weston-launch, as there is no way to know why weston was terminated.
>
> This commit makes weston-launch return 10+N instead, where N is the code
> of the signal that terminated weston. 10 was chosen because it allows a
> script to distinguish it from the case that weston-launch itself was
> killed by a signal (128+N), and does not overlap the standard exit codes
> defined in sysexits.h.
>
> Partial fix for https://bugs.freedesktop.org/show_bug.cgi?id=60935. I
> can't reproduce the SIGHUP using the fbdev backend.
>
> v3: better commit message.
Thanks, much better, using 10+N makes sense. Committed.
Kristian
> ---
> src/weston-launch.c | 16 ++++++++++++++--
> 1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/src/weston-launch.c b/src/weston-launch.c
> index 98f0111..407d135 100644
> --- a/src/weston-launch.c
> +++ b/src/weston-launch.c
> @@ -420,7 +420,7 @@ static int
> handle_signal(struct weston_launch *wl)
> {
> struct signalfd_siginfo sig;
> - int pid, status;
> + int pid, status, ret;
>
> if (read(wl->signalfd, &sig, sizeof sig) != sizeof sig) {
> error(0, errno, "reading signalfd failed");
> @@ -432,7 +432,19 @@ handle_signal(struct weston_launch *wl)
> pid = waitpid(-1, &status, 0);
> if (pid == wl->child) {
> wl->child = 0;
> - quit(wl, WIFEXITED(status) ? WEXITSTATUS(status) : 0);
> + if (WIFEXITED(status))
> + ret = WEXITSTATUS(status);
> + else if (WIFSIGNALED(status))
> + /*
> + * If weston dies because of signal N, we
> + * return 10+N. This is distinct from
> + * weston-launch dying because of a signal
> + * (128+N).
> + */
> + ret = 10 + WTERMSIG(status);
> + else
> + ret = 0;
> + quit(wl, ret);
> }
> break;
> case SIGTERM:
> --
> 1.8.1.5
>
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