[134] | 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- |
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| 2 | * |
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| 3 | * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu> |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | * |
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| 19 | */ |
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| 20 | |
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| 21 | #include "config.h" |
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| 22 | |
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| 23 | #include <stdlib.h> |
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| 24 | #include <stdio.h> |
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| 25 | #include <unistd.h> |
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| 26 | #include <errno.h> |
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| 27 | #include <string.h> |
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| 28 | #include <sys/types.h> |
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| 29 | #include <sys/stat.h> |
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| 30 | #include <fcntl.h> |
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| 31 | #include <signal.h> |
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| 32 | #include <locale.h> |
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| 33 | |
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| 34 | #include <glib.h> |
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| 35 | #include <glib/gi18n.h> |
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| 36 | #include <glib-object.h> |
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| 37 | |
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| 38 | #define DBUS_API_SUBJECT_TO_CHANGE |
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| 39 | #include <dbus/dbus-glib.h> |
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| 40 | #include <dbus/dbus-glib-lowlevel.h> |
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| 41 | |
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| 42 | #include "gdm-signal-handler.h" |
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| 43 | #include "gdm-log.h" |
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| 44 | #include "gdm-common.h" |
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| 45 | #include "gdm-product-slave.h" |
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| 46 | |
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| 47 | static int gdm_return_code = 0; |
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| 48 | |
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| 49 | static DBusGConnection * |
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| 50 | get_system_bus (void) |
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| 51 | { |
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| 52 | GError *error; |
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| 53 | DBusGConnection *bus; |
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| 54 | DBusConnection *connection; |
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| 55 | |
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| 56 | error = NULL; |
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| 57 | bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); |
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| 58 | if (bus == NULL) { |
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| 59 | g_warning ("Couldn't connect to system bus: %s", |
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| 60 | error->message); |
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| 61 | g_error_free (error); |
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| 62 | goto out; |
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| 63 | } |
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| 64 | |
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| 65 | connection = dbus_g_connection_get_connection (bus); |
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| 66 | dbus_connection_set_exit_on_disconnect (connection, FALSE); |
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| 67 | |
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| 68 | out: |
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| 69 | return bus; |
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| 70 | } |
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| 71 | |
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| 72 | static gboolean |
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| 73 | signal_cb (int signo, |
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| 74 | gpointer data) |
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| 75 | { |
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| 76 | int ret; |
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| 77 | |
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| 78 | g_debug ("Got callback for signal %d", signo); |
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| 79 | |
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| 80 | ret = TRUE; |
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| 81 | |
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| 82 | switch (signo) { |
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| 83 | case SIGSEGV: |
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| 84 | case SIGBUS: |
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| 85 | case SIGILL: |
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| 86 | case SIGABRT: |
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| 87 | g_debug ("Caught signal %d.", signo); |
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| 88 | |
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| 89 | ret = FALSE; |
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| 90 | break; |
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| 91 | |
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| 92 | case SIGFPE: |
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| 93 | case SIGPIPE: |
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| 94 | /* let the fatal signals interrupt us */ |
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| 95 | g_debug ("Caught signal %d, shutting down abnormally.", signo); |
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| 96 | ret = FALSE; |
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| 97 | |
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| 98 | break; |
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| 99 | |
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| 100 | case SIGINT: |
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| 101 | case SIGTERM: |
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| 102 | /* let the fatal signals interrupt us */ |
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| 103 | g_debug ("Caught signal %d, shutting down normally.", signo); |
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| 104 | ret = FALSE; |
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| 105 | |
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| 106 | break; |
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| 107 | |
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| 108 | case SIGHUP: |
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| 109 | g_debug ("Got HUP signal"); |
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| 110 | /* FIXME: |
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| 111 | * Reread config stuff like system config files, VPN service files, etc |
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| 112 | */ |
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| 113 | ret = TRUE; |
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| 114 | |
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| 115 | break; |
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| 116 | |
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| 117 | case SIGUSR1: |
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| 118 | g_debug ("Got USR1 signal"); |
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| 119 | /* we get this from xorg - can't use for anything else */ |
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| 120 | ret = TRUE; |
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| 121 | |
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| 122 | break; |
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| 123 | |
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| 124 | case SIGUSR2: |
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| 125 | g_debug ("Got USR2 signal"); |
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| 126 | ret = TRUE; |
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| 127 | |
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| 128 | gdm_log_toggle_debug (); |
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| 129 | |
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| 130 | break; |
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| 131 | |
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| 132 | default: |
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| 133 | g_debug ("Caught unhandled signal %d", signo); |
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| 134 | ret = TRUE; |
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| 135 | |
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| 136 | break; |
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| 137 | } |
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| 138 | |
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| 139 | return ret; |
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| 140 | } |
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| 141 | |
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| 142 | static void |
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| 143 | on_slave_stopped (GdmSlave *slave, |
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| 144 | GMainLoop *main_loop) |
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| 145 | { |
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| 146 | g_debug ("slave finished"); |
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| 147 | gdm_return_code = 0; |
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| 148 | g_main_loop_quit (main_loop); |
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| 149 | } |
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| 150 | |
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| 151 | static gboolean |
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| 152 | is_debug_set (gboolean arg) |
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| 153 | { |
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| 154 | /* enable debugging for unstable builds */ |
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| 155 | if (gdm_is_version_unstable ()) { |
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| 156 | return TRUE; |
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| 157 | } |
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| 158 | |
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| 159 | return arg; |
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| 160 | } |
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| 161 | |
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| 162 | int |
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| 163 | main (int argc, |
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| 164 | char **argv) |
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| 165 | { |
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| 166 | GMainLoop *main_loop; |
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| 167 | GOptionContext *context; |
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| 168 | DBusGConnection *connection; |
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| 169 | GdmSlave *slave; |
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| 170 | static char *display_id = NULL; |
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| 171 | static gboolean debug = FALSE; |
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| 172 | GdmSignalHandler *signal_handler; |
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| 173 | static GOptionEntry entries [] = { |
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| 174 | { "debug", 0, 0, G_OPTION_ARG_NONE, &debug, N_("Enable debugging code"), NULL }, |
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| 175 | { "display-id", 0, 0, G_OPTION_ARG_STRING, &display_id, N_("Display ID"), N_("id") }, |
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| 176 | { NULL } |
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| 177 | }; |
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| 178 | |
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| 179 | bindtextdomain (GETTEXT_PACKAGE, GNOMELOCALEDIR); |
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| 180 | textdomain (GETTEXT_PACKAGE); |
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| 181 | setlocale (LC_ALL, ""); |
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| 182 | |
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| 183 | gdm_set_fatal_warnings_if_unstable (); |
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| 184 | |
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| 185 | g_type_init (); |
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| 186 | |
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| 187 | context = g_option_context_new (_("GNOME Display Manager Slave")); |
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| 188 | g_option_context_add_main_entries (context, entries, NULL); |
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| 189 | |
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| 190 | g_option_context_parse (context, &argc, &argv, NULL); |
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| 191 | g_option_context_free (context); |
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| 192 | |
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| 193 | connection = get_system_bus (); |
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| 194 | if (connection == NULL) { |
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| 195 | goto out; |
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| 196 | } |
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| 197 | |
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| 198 | gdm_log_init (); |
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| 199 | |
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| 200 | gdm_log_set_debug (is_debug_set (debug)); |
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| 201 | |
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| 202 | if (display_id == NULL) { |
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| 203 | g_critical ("No display ID set"); |
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| 204 | exit (1); |
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| 205 | } |
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| 206 | |
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| 207 | main_loop = g_main_loop_new (NULL, FALSE); |
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| 208 | |
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| 209 | signal_handler = gdm_signal_handler_new (); |
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| 210 | gdm_signal_handler_set_fatal_func (signal_handler, |
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| 211 | (GDestroyNotify)g_main_loop_quit, |
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| 212 | main_loop); |
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| 213 | gdm_signal_handler_add (signal_handler, SIGTERM, signal_cb, NULL); |
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| 214 | gdm_signal_handler_add (signal_handler, SIGINT, signal_cb, NULL); |
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| 215 | gdm_signal_handler_add (signal_handler, SIGILL, signal_cb, NULL); |
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| 216 | gdm_signal_handler_add (signal_handler, SIGBUS, signal_cb, NULL); |
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| 217 | gdm_signal_handler_add (signal_handler, SIGFPE, signal_cb, NULL); |
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| 218 | gdm_signal_handler_add (signal_handler, SIGHUP, signal_cb, NULL); |
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| 219 | gdm_signal_handler_add (signal_handler, SIGSEGV, signal_cb, NULL); |
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| 220 | gdm_signal_handler_add (signal_handler, SIGABRT, signal_cb, NULL); |
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| 221 | gdm_signal_handler_add (signal_handler, SIGUSR1, signal_cb, NULL); |
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| 222 | gdm_signal_handler_add (signal_handler, SIGUSR2, signal_cb, NULL); |
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| 223 | |
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| 224 | slave = gdm_product_slave_new (display_id); |
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| 225 | if (slave == NULL) { |
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| 226 | goto out; |
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| 227 | } |
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| 228 | g_signal_connect (slave, |
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| 229 | "stopped", |
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| 230 | G_CALLBACK (on_slave_stopped), |
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| 231 | main_loop); |
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| 232 | gdm_slave_start (slave); |
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| 233 | |
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| 234 | g_main_loop_run (main_loop); |
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| 235 | |
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| 236 | if (slave != NULL) { |
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| 237 | g_object_unref (slave); |
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| 238 | } |
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| 239 | |
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| 240 | if (signal_handler != NULL) { |
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| 241 | g_object_unref (signal_handler); |
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| 242 | } |
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| 243 | |
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| 244 | if (main_loop != NULL) { |
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| 245 | g_main_loop_unref (main_loop); |
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| 246 | } |
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| 247 | |
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| 248 | out: |
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| 249 | |
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| 250 | g_debug ("Slave finished"); |
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| 251 | |
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| 252 | return gdm_return_code; |
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| 253 | } |
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