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/* NetworkManager -- Network link manager
*
* Dan Williams <dcbw@redhat.com>
* Dan Willemsen <dan@willemsen.us>
* Robert Paskowitz
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* (C) Copyright 2004 Red Hat, Inc.
* (C) Copyright 2004 Dan Willemsen
* (C) Copyright 2004 Robert Paskowitz
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gio/gio.h>
#include "NetworkManagerGeneric.h"
#include "nm-system.h"
#include "NetworkManagerUtils.h"
#include "nm-logging.h"
#define BUFFER_SIZE 512
static void openrc_start_lo_if_necessary()
{
/* No need to run net.lo if it is already running */
if (nm_spawn_process ("/etc/init.d/net.lo status") != 0)
nm_spawn_process ("/etc/init.d/net.lo start");
}
/*
* nm_system_enable_loopback
*
* Bring up the loopback interface
*
*/
void nm_system_enable_loopback (void)
{
GFile *file;
GFileInputStream *in;
gchar buffer[BUFFER_SIZE];
gchar *comm, *readed, *tmp;
gssize r;
file = g_file_new_for_path ("/proc/1/comm");
in = g_file_read (file, NULL, NULL);
/* If anything goes wrong trying to open /proc/1/comm,
we will assume OpenRC. */
if (!in) {
openrc_start_lo_if_necessary ();
return;
}
comm = g_strdup("");
while ((r = g_input_stream_read (G_INPUT_STREAM(in), buffer, BUFFER_SIZE, NULL, NULL)) > 0) {
readed = g_strndup (buffer, r);
tmp = g_strconcat (comm, readed, NULL);
g_free (comm);
g_free (readed);
comm = tmp;
}
if (g_strstr_len (comm, -1, "systemd")) {
/* We use the generic loopback enabler if using systemd. */
nm_log_info (LOGD_CORE, "NetworkManager is running with systemd...");
nm_generic_enable_loopback ();
} else {
/* OpenRC otherwise. */
nm_log_info (LOGD_CORE, "NetworkManager is running with OpenRC...");
openrc_start_lo_if_necessary();
}
g_free (comm);
}
/*
* nm_system_update_dns
*
* Make glibc/nscd aware of any changes to the resolv.conf file by
* restarting nscd. Only restart if already running.
*
*/
void nm_system_update_dns (void)
{
if (g_file_test ("/usr/sbin/nscd", G_FILE_TEST_IS_EXECUTABLE)) {
nm_log_info (LOGD_DNS, "Clearing nscd hosts cache.");
nm_spawn_process ("/usr/sbin/nscd -i hosts");
}
}
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