memzap

commit 5f721ec36e692243453e5d728aeb8f0710bfcfc2
parent c9552cead65bebac9467eb348ac95ba573624edf
Author: sin <sin@2f30.org>
Date:   Sun,  3 Mar 2013 16:01:45 +0000

mdiffdump: Initial commit

Diffstat:
A
mdiffdump.c
 | 
37
+++++++++++++++++++++++++++++++++++++

1 file changed, 37 insertions(+), 0 deletions(-)
diff --git a/mdiffdump.c b/mdiffdump.c
@@ -0,0 +1,37 @@
+/* See LICENSE file for copyright and license details. */
+
+#include "proto.h"
+
+int
+main(int argc, char *argv[])
+{
+	int fd;
+	struct mdiff_hdr *hdr;
+	struct mdiff_region *mdiff;
+	uint32_t i, j;
+	char *p;
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s <mdiff-file>\n", *argv);
+		return 1;
+	}
+
+	fd = open_mdiff(argv[1]);
+	hdr = parse_mdiff_hdr(fd);
+	if (!hdr)
+		errx(1, "%s: failed to parse mdiff", argv[1]);
+	printf("nregions: %lu\n", (unsigned long)hdr->nregions);
+	printf("blksize: %lu\n", (unsigned long)hdr->blksize);
+	for (i = 0; i < hdr->nregions; i++) {
+		mdiff = mdiff_read_diff(fd, hdr, i);
+		printf("offset: %lu\n", (unsigned long)mdiff->offset);
+		printf("len: %lu\n", (unsigned long)mdiff->len);
+		printf("buf: ");
+		p = mdiff->buf;
+		for (j = 0; j < mdiff->len; j++)
+			putchar(p[j]);
+		putchar('\n');
+	}
+	close_mdiff(fd);
+	return 0;
+}