From: ed neville <ed@s5h.net>
Date: Sun, 20 Sep 2020 22:02:58 +0000 (+0100)
Subject: loop until waitpid returns pid_child or error
X-Git-Tag: v4.9~56^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=refs%2Fpull%2F278%2Fhead;p=thirdparty%2Fshadow.git

loop until waitpid returns pid_child or error

closes #104

Signed-off-by: ed neville <ed@s5h.net>
---

diff --git a/src/su.c b/src/su.c
index fc0e826f7..cea3f1552 100644
--- a/src/su.c
+++ b/src/su.c
@@ -354,7 +354,9 @@ static void prepare_pam_close_session (void)
 			pid_t pid;
 			stop = true;
 
-			pid = waitpid (-1, &status, WUNTRACED);
+			do {
+				pid = waitpid (-1, &status, WUNTRACED);
+			} while (pid != -1 && pid != pid_child);
 
 			/* When interrupted by signal, the signal will be
 			 * forwarded to the child, and termination will be