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
53274cff · Stéphane Graber · c131bef9 · 53274cff
Commit 53274cff 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
@@ -1075,7 +1075,7 @@ 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);