Allow interfaces to be ignored by networkmanager by creation of a
/etc/network/nm-disabled-INTERFACENAME file.

RP - 16/7/2008

Index: trunk/src/backends/NetworkManagerDebian.c
===================================================================
--- trunk.orig/src/backends/NetworkManagerDebian.c	2008-07-15 19:23:11.000000000 +0100
+++ trunk/src/backends/NetworkManagerDebian.c	2008-07-15 19:37:05.000000000 +0100
@@ -29,6 +29,7 @@
 
 #include <stdio.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <signal.h>
 #include <arpa/inet.h>
 #include "NetworkManagerGeneric.h"
@@ -374,12 +375,25 @@
 /*
  * nm_system_device_get_disabled
  *
- * Return whether the distro-specific system config tells us to use
- * dhcp for this device.
+ * Return whether the distro-specific system config tells us to interact
+ * with this device.
  *
  */
 gboolean nm_system_device_get_disabled (NMDevice *dev)
 {
+	struct stat statbuf;
+	gchar *filepath;
+
+	g_return_val_if_fail (dev != NULL, FALSE);
+
+	filepath = g_strdup_printf (SYSCONFDIR"/network/nm-disabled-%s", nm_device_get_iface (dev));
+
+	if (stat(filepath, &statbuf) == 0) {
+		g_free(filepath);
+		return TRUE;
+	}
+
+	g_free(filepath);
 	return FALSE;
 }