mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-28 05:53:54 +00:00
686e9ef605
When building with -Wimplicit-fallthrough we get a warning
tools/fdt_add_pubkey.c:52:25: warning:
this statement may fall through [-Wimplicit-fallthrough=]
52 | print_help();
|
Explicitly declare which functions don't return.
Fixes: 30238e9961 ("tools: add fdt_add_pubkey")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
#include <image.h>
|
|
#include "fit_common.h"
|
|
|
|
static const char *cmdname;
|
|
|
|
static const char *algo_name = "sha1,rsa2048"; /* -a <algo> */
|
|
static const char *keydir = "."; /* -k <keydir> */
|
|
static const char *keyname = "key"; /* -n <keyname> */
|
|
static const char *require_keys; /* -r <conf|image> */
|
|
static const char *keydest; /* argv[n] */
|
|
|
|
static void __attribute__((__noreturn__)) print_usage(const char *msg)
|
|
{
|
|
fprintf(stderr, "Error: %s\n", msg);
|
|
fprintf(stderr, "Usage: %s [-a <algo>] [-k <keydir>] [-n <keyname>] [-r <conf|image>]"
|
|
" <fdt blob>\n", cmdname);
|
|
fprintf(stderr, "Help information: %s [-h]\n", cmdname);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static void __attribute__((__noreturn__)) print_help(void)
|
|
{
|
|
fprintf(stderr, "Options:\n"
|
|
"\t-a <algo> Cryptographic algorithm. Optional parameter, default value: sha1,rsa2048\n"
|
|
"\t-k <keydir> Directory with public key. Optional parameter, default value: .\n"
|
|
"\t-n <keyname> Public key name. Optional parameter, default value: key\n"
|
|
"\t-r <conf|image> Required: If present this indicates that the key must be verified for the image / configuration to be considered valid.\n"
|
|
"\t<fdt blob> FDT blob file for adding of the public key. Required parameter.\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static void process_args(int argc, char *argv[])
|
|
{
|
|
int opt;
|
|
|
|
while ((opt = getopt(argc, argv, "a:k:n:r:h")) != -1) {
|
|
switch (opt) {
|
|
case 'k':
|
|
keydir = optarg;
|
|
break;
|
|
case 'a':
|
|
algo_name = optarg;
|
|
break;
|
|
case 'n':
|
|
keyname = optarg;
|
|
break;
|
|
case 'r':
|
|
require_keys = optarg;
|
|
break;
|
|
case 'h':
|
|
print_help();
|
|
default:
|
|
print_usage("Invalid option");
|
|
}
|
|
}
|
|
/* The last parameter is expected to be the .dtb to add the public key to */
|
|
if (optind < argc)
|
|
keydest = argv[optind];
|
|
|
|
if (!keydest)
|
|
print_usage("Missing dtb file to update");
|
|
}
|
|
|
|
static void reset_info(struct image_sign_info *info)
|
|
{
|
|
if (!info)
|
|
fprintf(stderr, "Error: info is NULL in %s\n", __func__);
|
|
|
|
memset(info, 0, sizeof(struct image_sign_info));
|
|
|
|
info->keydir = keydir;
|
|
info->keyname = keyname;
|
|
info->name = algo_name;
|
|
info->require_keys = require_keys;
|
|
info->crypto = image_get_crypto_algo(algo_name);
|
|
|
|
if (!info->crypto) {
|
|
fprintf(stderr, "Unsupported signature algorithm '%s'\n",
|
|
algo_name);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
static int add_pubkey(struct image_sign_info *info)
|
|
{
|
|
int destfd = -1, ret;
|
|
void *dest_blob = NULL;
|
|
struct stat dest_sbuf;
|
|
size_t size_inc = 0;
|
|
|
|
if (!info)
|
|
fprintf(stderr, "Error: info is NULL in %s\n", __func__);
|
|
|
|
do {
|
|
if (destfd >= 0) {
|
|
munmap(dest_blob, dest_sbuf.st_size);
|
|
close(destfd);
|
|
|
|
fprintf(stderr, ".dtb too small, increasing size by 1024 bytes\n");
|
|
size_inc = 1024;
|
|
}
|
|
|
|
destfd = mmap_fdt(cmdname, keydest, size_inc, &dest_blob,
|
|
&dest_sbuf, false, false);
|
|
if (destfd < 0)
|
|
exit(EXIT_FAILURE);
|
|
|
|
ret = info->crypto->add_verify_data(info, dest_blob);
|
|
if (ret == -ENOSPC)
|
|
continue;
|
|
else if (ret < 0)
|
|
break;
|
|
} while (ret == -ENOSPC);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct image_sign_info info;
|
|
int ret;
|
|
|
|
cmdname = argv[0];
|
|
|
|
process_args(argc, argv);
|
|
reset_info(&info);
|
|
ret = add_pubkey(&info);
|
|
|
|
if (ret < 0) {
|
|
fprintf(stderr, "%s: Cannot add public key to FIT blob: %s\n",
|
|
cmdname, strerror(ret));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|