From 383b010988bb6af62540cdb8efa76621ef25c162 Mon Sep 17 00:00:00 2001
From: Laurent Vivier <Laurent@lvivier.info>
Date: Mon, 14 Nov 2005 19:29:07 +0000
Subject: [PATCH] add fseek()

---
 libiso9660/iso9660_fseek.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 libiso9660/iso9660_fseek.c

diff --git a/libiso9660/iso9660_fseek.c b/libiso9660/iso9660_fseek.c
new file mode 100644
index 0000000..468891f
--- /dev/null
+++ b/libiso9660/iso9660_fseek.c
@@ -0,0 +1,38 @@
+/*
+ *
+ * (c) 2005 Laurent Vivier <LaurentVivier@wanadoo.fr>
+ *
+ */
+
+#include <stdio.h>
+
+#include "libiso9660.h"
+
+extern iso9660_read_t __iso9660_device_read;
+
+int iso9660_fseek(iso9660_FILE *file, long offset, int whence)
+{
+	long new_offset;
+
+	switch(whence)
+	{
+	case SEEK_SET:
+		new_offset = offset;
+		break;
+	case SEEK_CUR:
+		new_offset += offset;
+		break;
+	case SEEK_END:
+		new_offset = file->size + offset;
+		break;
+	default:
+		return -1;
+	}
+
+	if ( (new_offset < 0) || (new_offset > file->size) )
+		return -1;
+
+	file->offset = offset;
+
+	return 0;
+}