[PATCH] mkimage: Call verify_header after writing image to disk

["Pali Rohár" <pali@kernel.org>]

If image backend provides verify_header callback then call it after writing
image to disk. This ensures that written image is correct.

Signed-off-by: Pali Rohár <pali@kernel.org>
---
 tools/mkimage.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/tools/mkimage.c b/tools/mkimage.c
index fbe883ce3620..2d282630787c 100644
--- a/tools/mkimage.c
+++ b/tools/mkimage.c
@@ -698,6 +698,40 @@ int main(int argc, char **argv)
 		exit (EXIT_FAILURE);
 	}
 
+	if (tparams->verify_header) {
+		ifd = open(params.imagefile, O_RDONLY | O_BINARY);
+		if (ifd < 0) {
+			fprintf(stderr, "%s: Can't open %s: %s\n",
+				params.cmdname, params.imagefile,
+				strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+
+		if (fstat(ifd, &sbuf) < 0) {
+			fprintf(stderr, "%s: Can't stat %s: %s\n",
+				params.cmdname, params.imagefile, strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+		params.file_size = sbuf.st_size;
+
+		map_len = sbuf.st_size;
+		ptr = mmap(0, sbuf.st_size, PROT_READ, MAP_SHARED, ifd, 0);
+		if (ptr == MAP_FAILED) {
+			fprintf(stderr, "%s: Can't map %s: %s\n",
+				params.cmdname, params.imagefile, strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+
+		if (tparams->verify_header((unsigned char *)ptr, sbuf.st_size, &params) != 0) {
+			fprintf(stderr, "%s: Failed to verify header of %s\n",
+				params.cmdname, params.imagefile);
+			exit(EXIT_FAILURE);
+		}
+
+		(void)munmap((void *)ptr, map_len);
+		close(ifd);
+	}
+
 	exit (EXIT_SUCCESS);
 }
 
-- 
2.20.1