Skip control tty code for non-ttys

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

Skip control tty code for non-ttys
b538481a · Stéphane Graber · b870f8d8 · b538481a
Commit b538481a authored Mar 16, 2015 by Stéphane Graber
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attach.c src/lxc/attach.c +1 -1

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--- a/src/lxc/attach.c
+++ b/src/lxc/attach.c
@@ -985,7 +985,7 @@ static int attach_child_main(void* data)
 		new_gid = options->gid;
 	/* setup the control tty */
-	if (options->stdin_fd) {
+	if (options->stdin_fd && isatty(options->stdin_fd)) {
 		if (setsid() < 0) {
 			SYSERROR("unable to setsid");
 			shutdown(ipc_socket, SHUT_RDWR);