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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/stat.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <unistd.h>
#include <unistd.h>
#include "procd.h"
#include "hotplug.h"
#include "watchdog.h"
static struct uloop_process preinit;
static void spawn_procd(struct uloop_process *proc, int ret)
{
char *wdt_fd = watchdog_fd();
char *argv[] = { "/sbin/procd", NULL };
struct stat s;
if (!stat("/tmp/sysupgrade", &s))
while (true)
sleep(1);
unsetenv("INITRAMFS");
unsetenv("PREINIT");
DEBUG(1, "Exec to real procd now\n");
if (wdt_fd)
setenv("WDTFD", wdt_fd, 1);
execvp(argv[0], argv);
}
void procd_preinit(void)
{
char *argv[] = { "/bin/sh", "/etc/preinit", NULL };
LOG("- preinit -\n");
setenv("PREINIT", "1", 1);
preinit.cb = spawn_procd;
preinit.pid = fork();
if (!preinit.pid) {
execvp(argv[0], argv);
ERROR("Failed to start preinit\n");
exit(-1);
}
if (preinit.pid <= 0) {
ERROR("Failed to start new preinit instance\n");
return;
}
uloop_process_add(&preinit);
DEBUG(2, "Launched preinit instance, pid=%d\n", (int) preinit.pid);
}
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