memzap

commit 07ced4cd58e0932a464cb54c467928b51c52b9dc
parent e654163a70de4946608ce436cb170e3549bdcfd5
Author: sin <sin@2f30.org>
Date:   Sun,  3 Mar 2013 00:52:18 +0000

Add mdiff_start_diff()

Diffstat:
M
mdiff.c
 | 
14
++++++++++++++
M
proto.h
 | 
1
+

2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/mdiff.c b/mdiff.c
@@ -73,6 +73,20 @@ mdiff_insert_hdr(int fd, struct mdiff_hdr *hdr)
 }
 
 int
+mdiff_start_diff(int fd)
+{
+	int ret;
+
+	if (fd < 0)
+		return -EINVAL;
+
+	ret = lseek(fd, sizeof(struct mdiff_hdr), SEEK_SET);
+	if (ret < 0)
+		err(1, "lseek");
+	return 0;
+}
+
+int
 mdiff_append_rdiff(int fd, struct mem_region_diff *rdiff)
 {
 	struct mem_diff *md;
diff --git a/proto.h b/proto.h
@@ -161,6 +161,7 @@ int create_mdiff(const char *path);
 int close_mdiff(int fd);
 int parse_mdiff_hdr(int fd);
 int mdiff_insert_hdr(int fd, struct mdiff_hdr *hdr);
+int mdiff_start_diff(int fd);
 int mdiff_append_rdiff(int fd, struct mem_region_diff *rdiff);
 
 #endif