From: Andre Noll <maan@systemlinux.org>
Date: Fri, 15 Jan 2010 19:11:50 +0000 (+0100)
Subject: Fix creation of zero-sized disk storage objects.
X-Git-Tag: v0.1.2~9
X-Git-Url: http://git.tuebingen.mpg.de/?p=osl.git;a=commitdiff_plain;h=5ce943c5cee7b42a9feb6577c60efc68d6378003

Fix creation of zero-sized disk storage objects.

We must not call write_all() with a zero length parameter.
---

diff --git a/util.c b/util.c
index 49f1914..572b7a5 100644
--- a/util.c
+++ b/util.c
@@ -110,9 +110,11 @@ int write_file(const char *filename, const void *buf, size_t size)
 	if (ret < 0)
 		return ret;
 	fd = ret;
-	ret = write_all(fd, buf, &size);
-	if (ret < 0)
-		goto out;
+	if (size != 0) {
+		ret = write_all(fd, buf, &size);
+		if (ret < 0)
+			goto out;
+	}
 	ret = 1;
 out:
 	close(fd);