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/*
* 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 <sys/wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/reboot.h>
#include <libubox/uloop.h>
#include <libubus.h>
#include <stdlib.h>
#include <fcntl.h>
#include <getopt.h>
#include <libgen.h>
#include <regex.h>
#include <unistd.h>
#include <stdio.h>
#include "init.h"
#include "../watchdog.h"
unsigned int debug = 0;
static void
signal_shutdown(int signal, siginfo_t *siginfo, void *data)
{
fprintf(stderr, "reboot\n");
fflush(stderr);
sync();
sleep(2);
reboot(RB_AUTOBOOT);
while (1)
;
}
static struct sigaction sa_shutdown = {
.sa_sigaction = signal_shutdown,
.sa_flags = SA_SIGINFO
};
static void
cmdline(void)
{
char line[256];
int r, fd = open("/proc/cmdline", O_RDONLY);
regex_t pat_cmdline;
regmatch_t matches[2];
if (fd < 0)
return;
r = read(fd, line, sizeof(line) - 1);
line[r] = '\0';
close(fd);
regcomp(&pat_cmdline, "init_debug=([0-9]+)", REG_EXTENDED);
if (!regexec(&pat_cmdline, line, 2, matches, 0)) {
line[matches[1].rm_eo] = '\0';
debug = atoi(&line[matches[1].rm_so]);
}
regfree(&pat_cmdline);
}
int
main(int argc, char **argv)
{
pid_t pid;
sigaction(SIGTERM, &sa_shutdown, NULL);
sigaction(SIGUSR1, &sa_shutdown, NULL);
sigaction(SIGUSR2, &sa_shutdown, NULL);
early();
cmdline();
watchdog_init(1);
pid = fork();
if (!pid) {
char *kmod[] = { "/sbin/kmodloader", "/etc/modules-boot.d/", NULL };
if (debug < 3) {
int fd = open("/dev/null", O_RDWR);
if (fd > -1) {
dup2(fd, STDIN_FILENO);
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
if (fd > STDERR_FILENO)
close(fd);
}
}
execvp(kmod[0], kmod);
ERROR("Failed to start kmodloader\n");
exit(-1);
}
if (pid <= 0)
ERROR("Failed to start kmodloader instance\n");
uloop_init();
preinit();
uloop_run();
return 0;
}
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