start: close data socket in parent

Brings the number of open fds in the monitor process for a standard container without ttys down to 17. Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

start: close data socket in parent
37d5831e · Christian Brauner · Stéphane Graber · 7a687c31 · 37d5831e
Unverified Commit 37d5831e authored Oct 29, 2017 by Christian Brauner Committed by Stéphane Graber Nov 16, 2017
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start.c src/lxc/start.c +5 -0

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--- a/src/lxc/start.c
+++ b/src/lxc/start.c
@@ -1149,6 +1149,11 @@ int __lxc_start(const char *name, struct lxc_conf *conf,
 		ERROR("failed to spawn '%s'", name);
 		goto out_fini_nonet;
 	}
+	/* close parent side of data socket */
+	close(handler->data_sock[0]);
+	handler->data_sock[0] = -1;
+	close(handler->data_sock[1]);
+	handler->data_sock[1] = -1;

 	handler->conf->reboot = 0;