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/*
* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
* Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
*
* 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 "watchdog.h"
#include "sysupgrade.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
void sysupgrade_exec_upgraded(const char *prefix, char *path, char *command)
{
char *wdt_fd = watchdog_fd();
char *argv[] = { "/sbin/upgraded", NULL, NULL, NULL};
int ret;
ret = chroot(prefix);
if (ret < 0) {
fprintf(stderr, "Failed to chroot for upgraded exec.\n");
return;
}
argv[1] = path;
argv[2] = command;
if (wdt_fd) {
watchdog_set_cloexec(false);
setenv("WDTFD", wdt_fd, 1);
}
execvp(argv[0], argv);
/* Cleanup on failure */
fprintf(stderr, "Failed to exec upgraded.\n");
unsetenv("WDTFD");
watchdog_set_cloexec(true);
ret = chroot(".");
if (ret < 0) {
fprintf(stderr, "Failed to reset chroot, exiting.\n");
exit(EXIT_FAILURE);
}
}
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