utils: close parent end in child process after fork

Signed-off-by: Long Wang <w@laoqinren.net>
lxc · Aug 15, 2017 · dcc6437 · dcc6437
1 parent 4de8c04
commit dcc6437
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/lxc/utils.c b/src/lxc/utils.c
@@ -438,6 +438,9 @@ extern struct lxc_popen_FILE *lxc_popen(const char *command)
 		/* child */
 		int child_std_end = STDOUT_FILENO;
 
+		close(parent_end);
+		parent_end = -1;
+
 		if (child_end != child_std_end) {
 			/* dup2() doesn't dup close-on-exec flag */
 			dup2(child_end, child_std_end);