sched/sched/sched_waitid.c: Allow WNOHANG

In the current implementation of waitid, WEXITED is mandatory and WNOHANG is optional.
2020-11-06 15:37:05 +09:00 · 2020-11-06 15:37:05 +09:00 · d3700649c0
parent 51875ab039
commit d3700649c0
1 changed files with 6 additions and 1 deletions
--- a/sched/sched/sched_waitid.c
+++ b/sched/sched/sched_waitid.c
@ -127,7 +127,12 @@ int nx_waitid(int idtype, id_t id, FAR siginfo_t *info, int options)
   * distinguish any other events.
   */

-  if (options != WEXITED)
+  if ((options & WEXITED) == 0)
+    {
+      return -ENOSYS;
+    }
+
+  if ((options & ~(WEXITED | WNOHANG)) != 0)
    {
      return -ENOSYS;
    }