Add block device skeleton module

1 files changed, 84 insertions, 0 deletions

diff --git a/blockdev/blockdev.c b/blockdev/blockdev.c
new file mode 100644
index 0000000..cbac6f0
--- /dev/null
+++ b/blockdev/blockdev.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <ext4_config.h>
+#include <ext4_blockdev.h>
+#include <ext4_errno.h>
+
+
+/**********************BLOCKDEV INTERFACE**************************************/
+static int blockdev_open(struct ext4_blockdev *bdev);
+static int blockdev_bread(struct ext4_blockdev *bdev, void *buf, uint64_t blk_id,
+			 uint32_t blk_cnt);
+static int blockdev_bwrite(struct ext4_blockdev *bdev, const void *buf,
+			  uint64_t blk_id, uint32_t blk_cnt);
+static int blockdev_close(struct ext4_blockdev *bdev);
+
+/******************************************************************************/
+EXT4_BLOCKDEV_STATIC_INSTANCE(blockdev, 512, 0, blockdev_open,
+			      blockdev_bread, blockdev_bwrite, blockdev_close);
+
+/******************************************************************************/
+static int blockdev_open(struct ext4_blockdev *bdev)
+{
+	/*blockdev_open: skeleton*/
+	return EIO;
+}
+
+/******************************************************************************/
+
+static int blockdev_bread(struct ext4_blockdev *bdev, void *buf, uint64_t blk_id,
+			 uint32_t blk_cnt)
+{
+	/*blockdev_bread: skeleton*/
+	return EIO;
+}
+
+
+/******************************************************************************/
+static int blockdev_bwrite(struct ext4_blockdev *bdev, const void *buf,
+			  uint64_t blk_id, uint32_t blk_cnt)
+{
+	/*blockdev_bwrite: skeleton*/
+	return EIO;
+}
+/******************************************************************************/
+static int blockdev_close(struct ext4_blockdev *bdev)
+{
+	/*blockdev_close: skeleton*/
+	return EIO;
+}
+
+/******************************************************************************/
+struct ext4_blockdev *ext4_blockdev_get(void)
+{
+	return &blockdev;
+}
+/******************************************************************************/
+