/* Finit - Extremely fast /sbin/init replacement w/ I/O, hook & service plugins

*

* Copyright (c) 2008-2010 Claudio Matsuoka <cmatsuoka@gmail.com>

* Copyright (c) 2008-2012 Joachim Nilsson <troglobit@gmail.com>

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

*/

#include <sys/mount.h>

#include <ctype.h>

#include <dirent.h>

#include <sys/stat.h> /* umask(), mkdir() */

#include "finit.h"

#include "helpers.h"

#include "private.h"

#include "plugin.h"

#include "svc.h"

#include "sig.h"

#include "lite.h"

int debug = 0;

int verbose = 1;

char *sdown = NULL;

char *network = NULL;

char *username = NULL;

char *hostname = NULL;

char *rcsd = NULL;

static void parse_kernel_cmdline(void)

{

FILE *fp;

char line[LINE_SIZE];

if ((fp = fopen("/proc/cmdline", "r")) != NULL) {

fgets(line, sizeof(line), fp);

_d("Kernel command line: %s", line);

if (strstr(line, "finit_debug") || strstr(line, "--debug"))

debug = 1;

if (!debug && strstr(line, "quiet"))

verbose = 0;

fclose(fp);

}

}

static int run_loop(void)

{

while (1) {

svc_monitor();

plugin_monitor();

}

return 0;

}

int main(int UNUSED(args), char *argv[])

{

/*

* Initial setup of signals, ignore all until we're up.

*/

sig_init();

/*

* Mount base file system, kernel is assumed to run devtmpfs for /dev

*/

chdir("/");

umask(0);

mount("none", "/proc", "proc", 0, NULL);

mount("none", "/proc/bus/usb", "usbfs", 0, NULL);

mount("none", "/sys", "sysfs", 0, NULL);

mkdir("/dev/pts", 0755);

mkdir("/dev/shm", 0755);

mount("none", "/dev/pts", "devpts", 0, "gid=5,mode=620");

mount("none", "/dev/shm", "tmpfs", 0, NULL);

umask(022);

/*

* Parse kernel parameters

*/

parse_kernel_cmdline();

cls();

echo("finit " VERSION " (built " __DATE__ " " __TIME__ " by " WHOAMI ")");

/*

* Populate /dev and prepare for runtime events from kernel.

*/

#if defined(USE_UDEV)

run_interactive("udevd --daemon", "Populating device tree");

#elif defined (MDEV)

run_interactive(MDEV " -s", "Populating device tree");

#endif

/*

* Parse configuration file

*/

parse_finit_conf(FINIT_CONF);

/*

* Load plugins. Must run after finit.conf has registered

* all services, or service plugins won't have anything to

* hook on to.

*/

print_desc("", "Loading plugins");

print_result(plugin_load_all(PLUGIN_PATH));

/*

* Mount filesystems

*/

_d("Mount filesystems in /etc/fstab ...");

#ifdef REMOUNT_ROOTFS_RW

run("/bin/mount -n -o remount,rw /");

#endif

#ifdef SYSROOT

run(SYSROOT, "/", NULL, MS_MOVE, NULL);

#endif

_d("Root FS up, calling hooks ...");

plugin_run_hooks(HOOK_ROOTFS_UP);

umask(0);

run("/bin/mount -na");

run("/sbin/swapon -ea");

umask(0022);

/* Cleanup stale files, if any still linger on. */

run_interactive("rm -rf /tmp/* /var/run/* /var/lock/*", "Cleanup temporary directories");

/*

* Base FS up, enable standard SysV init signals

*/

sig_setup();

_d("Base FS up, calling hooks ...");

plugin_run_hooks(HOOK_BASEFS_UP);

/*

* Network stuff

*/

/* Setup kernel specific settings, e.g. allow broadcast ping, etc. */

run("/sbin/sysctl -e -p /etc/sysctl.conf >/dev/null");

/* Set initial hostname. */

set_hostname(hostname);

ifconfig("lo", "127.0.0.1", "255.0.0.0", 1);

if (network)

run_interactive(network, "Starting networking: %s", network);

umask(022);

/*

* Hooks that rely on loopback, or basic networking being up.

*/

plugin_run_hooks(HOOK_NETWORK_UP);

/*

* Start service monitor framework

*/

_d("Starting all static services from %s", FINIT_CONF);

svc_start_all();

/*

* Run startup scripts in /etc/finit.d/, if any.

*/

if (rcsd && fisdir(rcsd)) {

_d("Running startup scripts in %s ...", rcsd);

run_parts(rcsd, NULL);

}

/*

* Hooks that should run at the very end

*/

plugin_run_hooks(HOOK_SYSTEM_UP);

/* Start GETTY on console */

_d("Starting getty on console ...");

run_getty(GETTY, argv);

/*

* Enter main loop to monior /dev/initctl and services

*/

_d("Entering main loop ...");

return run_loop();

}

/**

* Local Variables:

* version-control: t

* indent-tabs-mode: t

* c-file-style: "linux"

* End:

*/