On 2015-10-16 16:49, Jan Kiszka wrote:
> Hi,
>
> kill() is currently handled by libcobalt such that PIDs <= 0 are
> forwarded to Linux and PIDs > 0 are considered to target only Xenomai
> threads. But what if the user wants to address a regular Linux task from
> within a Xenomai application? Shouldn't we retry kill via the Linux path
> if Xenomai's syscall reports ESRCH?
>
IOW:
diff --git a/lib/cobalt/signal.c b/lib/cobalt/signal.c
index aac4059..7e03301 100644
--- a/lib/cobalt/signal.c
+++ b/lib/cobalt/signal.c
@@ -99,6 +99,10 @@ COBALT_IMPL(int, kill, (pid_t pid, int sig))
ret = XENOMAI_SYSCALL2(sc_cobalt_kill, pid, sig);
if (ret) {
+ /* Retry with regular kill is no RT target was found. */
+ if (ret == -ESRCH)
+ return __STD(kill(pid, sig));
+
errno = -ret;
return -1;
}
Jan
--
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux
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