1 files changed, 41 insertions, 0 deletions
diff --git a/lib/libdisk/blocks.c b/lib/libdisk/blocks.c
new file mode 100644
index 0000000..3864ec2
--- /dev/null
+++ b/lib/libdisk/blocks.c
@@ -0,0 +1,41 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ *
+ * $Id$
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <err.h>
+#include "libdisk.h"
+
+void *
+read_block(int fd, daddr_t block)
+{
+	void *foo;
+
+	foo = malloc(512);
+	if (!foo)
+		err(1,"malloc");
+	if (-1 == lseek(fd, (off_t)block * 512, SEEK_SET))
+		err(1, "lseek");
+	if (512 != read(fd,foo, 512))
+		err(1,"read");
+	return foo;
+}
+
+void
+write_block(int fd, daddr_t block, void *foo)
+{
+	if (-1 == lseek(fd, (off_t)block * 512, SEEK_SET))
+		err(1, "lseek");
+	if (512 != write(fd,foo, 512))
+		err(1,"write");
+}