set close-on-exec flag on command socket

When we accept a connection, we have to set the close-on-exec flag, otherwise that won't be possible to reboot a container through a lxc-console command. Reported-by: Katoh Yasufumi <karma@jazz.email.ne.jp> Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>

set close-on-exec flag on command socket
967b3456 · Daniel Lezcano · Daniel Lezcano · 57d6d671 · 967b3456
Commit 967b3456 authored Jun 02, 2011 by Daniel Lezcano Committed by Daniel Lezcano Jun 02, 2011
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commands.c src/lxc/commands.c +5 -0

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--- a/src/lxc/commands.c
+++ b/src/lxc/commands.c
@@ -236,6 +236,11 @@ static int incoming_command_handler(int fd, void *data,
 		return -1;
 	}

+	if (fcntl(connection, F_SETFD, FD_CLOEXEC)) {
+		SYSERROR("failed to set close-on-exec on incoming connection");
+		goto out_close;
+	}
+
 	if (setsockopt(connection, SOL_SOCKET,
 		       SO_PASSCRED, &opt, sizeof(opt))) {
 		SYSERROR("failed to enable credential on socket");