1 files changed, 89 insertions, 0 deletions
diff --git a/carl9170fw/tools/src/checksum.c b/carl9170fw/tools/src/checksum.c
new file mode 100644
index 0000000..b394174
--- /dev/null
+++ b/carl9170fw/tools/src/checksum.c
@@ -0,0 +1,89 @@
+/*
+ * 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;
+}