2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
4 * Copyright (C) 2017 Matthias Schiffer <mschiffer@universe-factory.net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License version 2.1
8 * as published by the Free Software Foundation
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
19 #include "sysupgrade.h"
26 #include <libubox/blobmsg.h>
28 void sysupgrade_exec_upgraded(const char *prefix, char *path,
29 const char *backup, char *command,
30 struct blob_attr *options)
32 char *wdt_fd = watchdog_fd();
33 char *argv[] = { "/sbin/upgraded", NULL, NULL, NULL};
34 struct blob_attr *option;
40 fprintf(stderr, "Failed to chroot for upgraded exec.\n");
48 watchdog_set_cloexec(false);
49 setenv("WDTFD", wdt_fd, 1);
53 setenv("UPGRADE_BACKUP", backup, 1);
55 blobmsg_for_each_attr(option, options, rem) {
56 const char *prefix = "UPGRADE_OPT_";
62 if (asprintf(&name, "%s%s", prefix, blobmsg_name(option)) <= 0)
64 for (c = name + strlen(prefix); *c; c++) {
65 if (isalnum(*c) || *c == '_') {
74 fprintf(stderr, "Option \"%s\" contains invalid characters\n",
75 blobmsg_name(option));
80 switch (blobmsg_type(option)) {
81 case BLOBMSG_TYPE_INT32:
82 tmp = blobmsg_get_u32(option);
84 case BLOBMSG_TYPE_INT16:
85 tmp = blobmsg_get_u16(option);
87 case BLOBMSG_TYPE_INT8:
88 tmp = blobmsg_get_u8(option);
91 fprintf(stderr, "Option \"%s\" has unsupported type: %d\n",
92 blobmsg_name(option), blobmsg_type(option));
96 snprintf(value, sizeof(value), "%u", tmp);
98 setenv(name, value, 1);
103 execvp(argv[0], argv);
105 /* Cleanup on failure */
106 fprintf(stderr, "Failed to exec upgraded.\n");
108 watchdog_set_cloexec(true);
111 fprintf(stderr, "Failed to reset chroot, exiting.\n");