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authorLeah Neukirchen <leah@vuxu.org>2018-09-17 12:55:54 +0200
committerLeah Neukirchen <leah@vuxu.org>2018-09-17 12:55:54 +0200
commitcdbf6a42292d3d49a9d32edf49cdb32f7bb56fdb (patch)
tree8d1d57c9a2d250dc5838a1839cd693deff6de2bb
parenta2031e792e57e5201afeeda9de0cb7f9a7bea7aa (diff)
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pwait: exit with status 1 if no valid pid is given
-rw-r--r--pwait.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/pwait.c b/pwait.c
index 15b4904..2ed699c 100644
--- a/pwait.c
+++ b/pwait.c
@@ -187,6 +187,9 @@ usage:
 		pids[m++] = pid;
 	}
 
+	if (m == 0)
+		exit(1);
+
 	sk_nl = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
 	if (sk_nl == -1) {
 		perror("socket sk_nl error");