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authorMatthias Schiffer <mschiffer@universe-factory.net>2015-11-30 14:49:56 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2015-11-30 15:03:56 +0100
commitd905c9da4d8984f19cd74a17cebd2743d399b035 (patch)
tree8a7db7d0ef9d8ce2ed0750da1e6286bbc0aadc41 /state.c
parent9f5b52ee3240dc61b0cae882dd880fd2ff28edf4 (diff)
downloadunitd-d905c9da4d8984f19cd74a17cebd2743d399b035.tar
unitd-d905c9da4d8984f19cd74a17cebd2743d399b035.zip
Reorganize source directory
Diffstat (limited to 'state.c')
-rw-r--r--state.c181
1 files changed, 0 insertions, 181 deletions
diff --git a/state.c b/state.c
deleted file mode 100644
index a16ec36..0000000
--- a/state.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * Copyright (C) 2015 Matthias Schiffer <mschiffer@universe-factory.net>
- *
- * Based on "procd" by:
- * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
- * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
- *
- * 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.
- */
-
-#include <fcntl.h>
-#include <sys/reboot.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <signal.h>
-
-#include "unitd.h"
-#include "syslog.h"
-#include "watchdog.h"
-#include "service/service.h"
-#include "utils/utils.h"
-
-enum {
- STATE_NONE = 0,
- STATE_EARLY,
- STATE_RUNNING,
- STATE_SHUTDOWN,
- __STATE_MAX,
-};
-
-static int state = STATE_NONE;
-static int reboot_event;
-
-static void set_stdio(const char* tty)
-{
- if (chdir("/dev") ||
- !freopen(tty, "r", stdin) ||
- !freopen(tty, "w", stdout) ||
- !freopen(tty, "w", stderr) ||
- chdir("/"))
- ERROR("failed to set stdio\n");
- else
- fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK);
-}
-
-static void set_console(void)
-{
- const char* tty;
- char* split;
- char line[ 20 ];
- const char* try[] = { "tty0", "console", NULL }; /* Try the most common outputs */
- int f, i = 0;
-
- tty = get_cmdline_val("console",line,sizeof(line));
- if (tty != NULL) {
- split = strchr(tty, ',');
- if ( split != NULL )
- *split = '\0';
- } else {
- // Try a default
- tty=try[i];
- i++;
- }
-
- if (chdir("/dev")) {
- ERROR("failed to change dir to /dev\n");
- return;
- }
- while (tty!=NULL) {
- f = open(tty, O_RDONLY);
- if (f >= 0) {
- close(f);
- break;
- }
-
- tty=try[i];
- i++;
- }
- if (chdir("/"))
- ERROR("failed to change dir to /\n");
-
- if (tty != NULL)
- set_stdio(tty);
-}
-
-static void state_enter(void)
-{
- char ubus_cmd[] = "/sbin/ubusd";
-
- switch (state) {
- case STATE_EARLY:
- watchdog_init(0);
- LOG("- early -\n");
- unitd_early();
- unitd_connect_ubus();
- service_init();
- service_start_early("ubus", ubus_cmd);
- break;
-
- case STATE_RUNNING:
- LOG("- init -\n");
- unitd_askconsole();
-
- // switch to syslog log channel
- ulog_open(ULOG_SYSLOG, LOG_DAEMON, "unitd");
-
- LOG("- init complete -\n");
- break;
-
- case STATE_SHUTDOWN:
- /* Redirect output to the console for the users' benefit */
- set_console();
- LOG("- shutdown -\n");
- sync();
- // To prevent killed processes from interrupting the sleep
- signal(SIGCHLD, SIG_IGN);
- LOG("- SIGTERM processes -\n");
- kill(-1, SIGTERM);
- sync();
- sleep(1);
- LOG("- SIGKILL processes -\n");
- kill(-1, SIGKILL);
- sync();
- sleep(1);
- if (reboot_event == RB_POWER_OFF)
- LOG("- power down -\n");
- else
- LOG("- reboot -\n");
-
- /* Allow time for last message to reach serial console, etc */
- sleep(1);
-
- /* We have to fork here, since the kernel calls do_exit(EXIT_SUCCESS)
- * in linux/kernel/sys.c, which can cause the machine to panic when
- * the init process exits... */
- if (!vfork( )) { /* child */
- reboot(reboot_event);
- _exit(EXIT_SUCCESS);
- }
-
- while (1)
- sleep(1);
- break;
-
- default:
- ERROR("Unhandled state %d\n", state);
- return;
- };
-}
-
-void unitd_state_next(void)
-{
- DEBUG(4, "Change state %d -> %d\n", state, state + 1);
- state++;
- state_enter();
-}
-
-void unitd_state_ubus_connect(void)
-{
- if (state == STATE_EARLY)
- unitd_state_next();
-}
-
-void unitd_shutdown(int event)
-{
- if (state >= STATE_SHUTDOWN)
- return;
- DEBUG(2, "Shutting down system with event %x\n", event);
- reboot_event = event;
- state = STATE_SHUTDOWN;
- state_enter();
-}