imagetool: make the image_save_datafile() available to all image types

Move the image_save_datafile() function from an U-Multi specific file
(default_image.c) to a file common to all image types (image.c). And rename it
to genimg_save_datafile(), to make clear it is useful for any image type.

Signed-off-by: Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/tools/imagetool.c b/tools/imagetool.c
index e4de7af..a25b86b 100644
--- a/tools/imagetool.c
+++ b/tools/imagetool.c
@@ -113,3 +113,30 @@ int imagetool_verify_print_header(
 
 	return retval;
 }
+
+int imagetool_save_datafile(
+	const char *file_name,
+	ulong file_data,
+	ulong file_len)
+{
+	int dfd;
+
+	dfd = open(file_name, O_RDWR | O_CREAT | O_TRUNC | O_BINARY,
+		   S_IRUSR | S_IWUSR);
+	if (dfd < 0) {
+		fprintf(stderr, "Can't open \"%s\": %s\n",
+			file_name, strerror(errno));
+		return -1;
+	}
+
+	if (write(dfd, (void *)file_data, file_len) != (ssize_t)file_len) {
+		fprintf(stderr, "Write error on \"%s\": %s\n",
+			file_name, strerror(errno));
+		close(dfd);
+		return -1;
+	}
+
+	close(dfd);
+
+	return 0;
+}