/*
 * $Id$
 */
#include <types.idl>

[uuid(IF_BLOCKDEV_ID)]
interface IF_BLOCKDEV {

	/**
	 * Returns the blocksize of the device (typically a multiple of 512)
	 */
	void GetBlockSize(in objectid_t devhandle, out idlsize_t blocksize)
		raises(no_such_device);

	/**
	 * Reads a block from the device
	 */
	void ReadBlock(in objectid_t devhandle, in uint32_t block, [prealloc] out buffer_t buffer)
		raises(no_such_device, invalid_parameter);
	
	/**
	 * Writes a block to the device
	 */
	void WriteBlock(in objectid_t devhandle, in uint32_t block, in buffer_t buffer)
		raises(no_such_device, invalid_parameter);

};