diff options
Diffstat (limited to 'src/main.c')
| -rw-r--r-- | src/main.c | 186 |
1 files changed, 175 insertions, 11 deletions
@@ -16,12 +16,18 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <errno.h> #include <stdlib.h> #include <string.h> +#include <syslog.h> + +#include <libdaemon/dfork.h> #include <glib.h> #include <gio/gio.h> +#include <rc.h> + #include "hostnamed.h" #include "localed.h" #include "timedated.h" @@ -32,26 +38,157 @@ #define DEFAULT_LEVELS (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL | G_LOG_LEVEL_WARNING | G_LOG_LEVEL_MESSAGE) static gboolean debug = FALSE; +static gboolean foreground = FALSE; +static gboolean use_syslog = FALSE; static gboolean read_only = FALSE; +static gboolean update_rc_status = FALSE; static gchar *ntp_preferred_service = NULL; +static guint components_started = 0; +G_LOCK_DEFINE_STATIC (components_started); + +static gboolean started = FALSE; + static GOptionEntry option_entries[] = { { "debug", 0, 0, G_OPTION_ARG_NONE, &debug, "Enable debugging messages", NULL }, + { "foreground", 0, 0, G_OPTION_ARG_NONE, &foreground, "Do not daemonize", NULL }, { "read-only", 0, 0, G_OPTION_ARG_NONE, &read_only, "Run in read-only mode", NULL }, { "ntp-service", 0, 0, G_OPTION_ARG_STRING, &ntp_preferred_service, "Preferred rc NTP service for timedated", NULL }, + { "update-rc-status", 0, 0, G_OPTION_ARG_NONE, &update_rc_status, "Force openrc-settingsd rc service to be marked as started", NULL }, { NULL } }; -/* Emulates the new behavior of g_log_default_handler introduced in glib-2.31.2 */ +static int +log_level_to_syslog (GLogLevelFlags log_level) +{ + switch (log_level & G_LOG_LEVEL_MASK) { + case G_LOG_LEVEL_ERROR: + case G_LOG_LEVEL_CRITICAL: + return LOG_ERR; + case G_LOG_LEVEL_WARNING: + return LOG_WARNING; + case G_LOG_LEVEL_MESSAGE: + return LOG_NOTICE; + case G_LOG_LEVEL_INFO: + return LOG_INFO; + case G_LOG_LEVEL_DEBUG: + return LOG_DEBUG; + } + return LOG_NOTICE; +} + static void log_handler (const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer user_data) { - if (debug || log_level & DEFAULT_LEVELS) - g_log_default_handler (log_domain, log_level, message, user_data); + const gchar *debug_domains = NULL; + GString *result = NULL; + gchar *result_data = NULL; + + debug_domains = g_getenv ("G_MESSAGES_DEBUG"); + if (!debug && !(log_level & DEFAULT_LEVELS) && g_strcmp0 (debug_domains, "all") && strstr0 (debug_domains, log_domain) == NULL) + return; + + result = g_string_new (NULL); + if (!use_syslog) + g_string_append_printf (result, "openrc-settingsd[%lu]: ", (gulong)getpid ()); + if (log_domain != NULL) + g_string_append_printf (result, "%s: ", log_domain); + + if (!use_syslog) + switch (log_level & G_LOG_LEVEL_MASK) { + case G_LOG_LEVEL_ERROR: + case G_LOG_LEVEL_CRITICAL: + g_string_append (result, "ERROR: "); + break; + case G_LOG_LEVEL_WARNING: + g_string_append (result, "WARNING: "); + break; + case G_LOG_LEVEL_MESSAGE: + g_string_append (result, "Notice: "); + break; + case G_LOG_LEVEL_INFO: + g_string_append (result, "Info: "); + break; + case G_LOG_LEVEL_DEBUG: + g_string_append (result, "Debug: "); + break; + } + + if (message != NULL) + g_string_append (result, message); + else + g_string_append (result, "(NULL)"); + + result_data = g_string_free (result, FALSE); + + if (use_syslog) { + openlog ("openrc-settingsd", LOG_PID, LOG_DAEMON); + syslog (log_level_to_syslog (log_level), "%s", result_data); + } else + g_printerr ("%s\n", result_data); + + g_free (result_data); +} + +void +openrc_settingsd_exit (int status) +{ + GFile *pidfile = NULL; + + if (!foreground) + daemon_retval_send (status); + + pidfile = g_file_new_for_path (PIDFILE); + g_file_delete (pidfile, NULL, NULL); + + if (update_rc_status && started) { + if (status) + rc_service_mark ("openrc-settingsd", RC_SERVICE_FAILED); + else + rc_service_mark ("openrc-settingsd", RC_SERVICE_STOPPED); + } + + g_clear_object (&pidfile); + exit (status); +} + +/* This is called each time we successfully grab a bus name when starting up */ +void +openrc_settingsd_component_started () +{ + gchar *pidstring = NULL; + GError *err = NULL; + GFile *pidfile = NULL; + + G_LOCK (components_started); + + components_started++; + /* We want all 3 names (hostnamed, localed, timedated) to be grabbed */ + if (components_started < 3) + goto out; + + pidfile = g_file_new_for_path (PIDFILE); + pidstring = g_strdup_printf ("%lu", (gulong)getpid ()); + if (!g_file_replace_contents (pidfile, pidstring, strlen(pidstring), NULL, FALSE, G_FILE_CREATE_NONE, NULL, NULL, &err)) { + g_critical ("Failed to write " PIDFILE ": %s", err->message); + openrc_settingsd_exit (1); + } + + if (!foreground) + daemon_retval_send (0); + + if (update_rc_status) + rc_service_mark ("openrc-settingsd", RC_SERVICE_STARTED); + started = TRUE; + + out: + G_UNLOCK (components_started); + g_clear_object (&pidfile); + g_free (pidstring); } gint @@ -60,21 +197,45 @@ main (gint argc, gchar *argv[]) GError *error = NULL; GOptionContext *option_context; GMainLoop *loop = NULL; + pid_t pid; g_type_init (); + g_log_set_default_handler (log_handler, NULL); option_context = g_option_context_new ("- system settings D-Bus service for OpenRC"); g_option_context_add_main_entries (option_context, option_entries, NULL); if (!g_option_context_parse (option_context, &argc, &argv, &error)) { - g_printerr ("Failed to parse options: %s\n", error->message); - exit (1); + g_critical ("Failed to parse options: %s", error->message); + return 1; } - if (glib_check_version (2, 31, 2) == NULL) { - if (debug) - g_setenv("G_MESSAGES_DEBUG", "all", TRUE); - } else - g_log_set_default_handler (log_handler, NULL); + if (!foreground) { + if (daemon_retval_init () < 0) { + g_critical ("Failed to create pipe"); + return 1; + } + if ((pid = daemon_fork ()) < 0) { + /* Fork failed */ + daemon_retval_done (); + return 1; + } else if (pid) { + /* Parent */ + int ret; + + /* Wait 20 seconds for daemon_retval_send() in the daemon process */ + if ((ret = daemon_retval_wait (20)) < 0) { + g_critical ("Timed out waiting for daemon process: %s", strerror(errno)); + return 255; + } else if (ret > 0) { + g_critical ("Daemon process returned error code %d", ret); + return ret; + } + return 0; + } + /* Daemon */ + use_syslog = TRUE; + daemon_close_all (-1); + } utils_init (); hostnamed_init (read_only); @@ -84,10 +245,13 @@ main (gint argc, gchar *argv[]) g_main_loop_run (loop); g_main_loop_unref (loop); + timedated_destroy (); localed_destroy (); hostnamed_destroy (); utils_destroy (); + + g_clear_error (&error); g_free (ntp_preferred_service); - return 0; + openrc_settingsd_exit (0); } |