coverity: #1425846

Unchecked return value Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

coverity: #1425846
01594f79 · Christian Brauner · a1a45077 · 01594f79
Unverified Commit 01594f79 authored Jun 15, 2018 by Christian Brauner
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attach.c src/lxc/attach.c +3 -2

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--- a/src/lxc/attach.c
+++ b/src/lxc/attach.c
@@ -606,8 +606,9 @@ static void lxc_attach_get_init_uidgid(uid_t *init_uid, gid_t *init_gid)
 	uid_t uid = (uid_t)-1;
 	gid_t gid = (gid_t)-1;
-	/* Read capabilities. */
+	ret = snprintf(proc_fn, __PROC_STATUS_LEN, "/proc/%d/status", 1);
-	snprintf(proc_fn, __PROC_STATUS_LEN, "/proc/%d/status", 1);
+	if (ret < 0 || ret >= __PROC_STATUS_LEN)
+		return;
 	proc_file = fopen(proc_fn, "r");
 	if (!proc_file)