Viewing file:  checksum.c (2.04 KB) -rw-r--r--
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/*
* Copyright 2010-2011 Christian Lamparter <chunkeey@googlemail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <error.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "carlfw.h"
#include "compiler.h"
static void checksum_help(void)
{
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\tchecksum FW-FILE\n");
fprintf(stderr, "\nDescription:\n");
fprintf(stderr, "\tThis simple utility adds/updates various "
"checksums.\n");
fprintf(stderr, "\nParameteres:\n");
fprintf(stderr, "\t 'FW-FILE' = firmware name\n");
fprintf(stderr, "\n");
}
int main(int argc, char *args[])
{
struct carlfw *fw = NULL;
int err = 0;
if (argc != 2) {
err = -EINVAL;
goto out;
}
fw = carlfw_load(args[1]);
if (IS_ERR_OR_NULL(fw)) {
err = PTR_ERR(fw);
fprintf(stderr, "Failed to open file \"%s\" (%d).\n",
args[1], err);
goto out;
}
/*
* No magic here, The checksum descriptor is added/update
* automatically in a subroutine of carlfw_store().
*
* This tools serves as a skeleton/example.
*/
err = carlfw_store(fw);
if (err) {
fprintf(stderr, "Failed to apply checksum (%d).\n", err);
goto out;
}
out:
switch (err) {
case 0:
fprintf(stdout, "checksum applied.\n");
break;
case -EINVAL:
checksum_help();
break;
default:
break;
}
carlfw_release(fw);
return err ? EXIT_FAILURE : EXIT_SUCCESS;
}
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