lib/spawn.c run_command: don't loop forever if waitpid() is returning ECHILD

If SIGCHILD is being ignored, waitpid() will forever error with ECHILD and
this loop with never end, so don't loop if it erros with ECHILD.

diff --git a/lib/spawn.c b/lib/spawn.c
index fc4ad95c7c429aeac246e0523073e9e82cf2a8df..79f5054e7eb3935145927e6e17ca1468482e0030 100644 (file)
--- a/lib/spawn.c
+++ b/lib/spawn.c
@@ -68,8 +68,9 @@ int run_command (const char *cmd, const char *argv[],
 
        do {
                wpid = waitpid (pid, status, 0);
-       } while (   ((pid_t)-1 == wpid && errno == EINTR)
-                || ((pid_t)-1 != wpid && wpid != pid));
+       } while ( ((pid_t)-1 == wpid && errno != ECHILD)  
+                && (((pid_t)-1 == wpid && errno == EINTR)
+                || ((pid_t)-1 != wpid && wpid != pid)));
 
        if ((pid_t)-1 == wpid) {
                fprintf (stderr, "%s: waitpid (status: %d): %s\n",