log: read log settings from the environment

[elogind.git] / main.c

diff --git a/main.c b/main.c
index 663e7e3af4f23e76f512a984939a06191ba33293..86ccc72a168be8b7472fe062f2137b2e1c741cfa 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,43 +1,106 @@
 /*-*- Mode: C; c-basic-offset: 8 -*-*/
 
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd 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.
+
+  systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <dbus/dbus.h>
+
 #include <stdio.h>
 #include <errno.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 
 #include "manager.h"
 #include "log.h"
+#include "mount-setup.h"
 
 int main(int argc, char *argv[]) {
         Manager *m = NULL;
         Unit *target = NULL;
         Job *job = NULL;
         int r, retval = 1;
+        const char *default_unit;
+
+        if (argc >= 2)
+                default_unit = argv[1];
+        else
+                default_unit = SPECIAL_DEFAULT_TARGET;
+
+        /* Move out of the way, so that we won't block unmounts */
+        assert_se(chdir("/")  == 0);
+
+        /* Reset all signal handlers. */
+        assert_se(reset_all_signal_handlers() == 0);
+
+        /* Become a session leader if we aren't one yet. */
+        setsid();
+
+        /* Disable the umask logic */
+        umask(0);
+
+        /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
+        dbus_connection_set_change_sigpipe(FALSE);
+
+        /* Mount /dev, /sys and friends */
+        mount_setup();
 
-        assert_se(set_unit_path("test1") >= 0);
+        /* Set up logging */
+        log_set_target(LOG_TARGET_CONSOLE);
 
-        if (!(m = manager_new()) < 0) {
-                log_error("Failed to allocate manager object: %s", strerror(ENOMEM));
+        /* Open the logging devices, if possible and necessary*/
+        log_open_syslog();
+        log_open_kmsg();
+
+        if ((r = manager_new(&m)) < 0) {
+                log_error("Failed to allocate manager object: %s", strerror(-r));
                 goto finish;
         }
 
-        if ((r = manager_load_unit(m, "default.target", &target)) < 0) {
-                log_error("Failed to load default target: %s", strerror(-r));
+        if ((r = manager_coldplug(m)) < 0) {
+                log_error("Failed to retrieve coldplug information: %s", strerror(-r));
                 goto finish;
         }
 
-        /* if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &job)) < 0) { */
-        /*         log_error("Failed to start default target: %s", strerror(-r)); */
-        /*         goto finish; */
-        /* } */
+        log_debug("Activating default unit: %s", default_unit);
+
+        if ((r = manager_load_unit(m, default_unit, &target)) < 0) {
+                log_error("Failed to load default target: %s", strerror(-r));
+                goto finish;
+        }
 
         printf("→ By units:\n");
         manager_dump_units(m, stdout, "\t");
 
+        if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &job)) < 0) {
+                log_error("Failed to start default target: %s", strerror(-r));
+                goto finish;
+        }
+
         printf("→ By jobs:\n");
         manager_dump_jobs(m, stdout, "\t");
 
-        /* manager_loop(m); */
+        if ((r = manager_loop(m)) < 0) {
+                log_error("Failed to run mainloop: %s", strerror(-r));
+                goto finish;
+        }
 
         retval = 0;
 
@@ -45,5 +108,9 @@ finish:
         if (m)
                 manager_free(m);
 
+        log_debug("Exit.");
+
+        dbus_shutdown();
+
         return retval;
 }