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"
28 #include <libubox/blobmsg.h>
30 void sysupgrade_exec_upgraded(const char *prefix
, char *path
,
31 const char *backup
, char *command
,
32 struct blob_attr
*options
)
34 char *wdt_fd
= watchdog_fd();
35 char *argv
[] = { "/sbin/upgraded", NULL
, NULL
, NULL
};
36 struct blob_attr
*option
;
42 fprintf(stderr
, "Failed to chroot for upgraded exec.\n");
50 watchdog_set_cloexec(false);
51 setenv("WDTFD", wdt_fd
, 1);
55 setenv("UPGRADE_BACKUP", backup
, 1);
57 blobmsg_for_each_attr(option
, options
, rem
) {
58 const char *prefix
= "UPGRADE_OPT_";
64 if (asprintf(&name
, "%s%s", prefix
, blobmsg_name(option
)) <= 0)
66 for (c
= name
+ strlen(prefix
); *c
; c
++) {
67 if (isalnum(*c
) || *c
== '_') {
76 fprintf(stderr
, "Option \"%s\" contains invalid characters\n",
77 blobmsg_name(option
));
82 switch (blobmsg_type(option
)) {
83 case BLOBMSG_TYPE_INT32
:
84 tmp
= blobmsg_get_u32(option
);
86 case BLOBMSG_TYPE_INT16
:
87 tmp
= blobmsg_get_u16(option
);
89 case BLOBMSG_TYPE_INT8
:
90 tmp
= blobmsg_get_u8(option
);
93 fprintf(stderr
, "Option \"%s\" has unsupported type: %d\n",
94 blobmsg_name(option
), blobmsg_type(option
));
98 snprintf(value
, sizeof(value
), "%u", tmp
);
100 setenv(name
, value
, 1);
105 execvp(argv
[0], argv
);
107 /* Cleanup on failure */
108 fprintf(stderr
, "Failed to exec upgraded: %s\n", strerror(-errno
));
110 watchdog_set_cloexec(true);
113 fprintf(stderr
, "Failed to reset chroot, exiting.\n");