file_bd.c File Reference

File-backed block device driver. More...

#include <stdio.h>
#include <unistd.h>
#include <ipc/bd.h>
#include <async.h>
#include <as.h>
#include <fibril_synch.h>
#include <devmap.h>
#include <sys/types.h>
#include <sys/typefmt.h>
#include <errno.h>
#include <bool.h>
#include <task.h>
#include <macros.h>

Go to the source code of this file.

Defines
#define	DEFAULT_BLOCK_SIZE   512
#define	NAME   "file_bd"
Functions
static void	file_bd_connection (ipc_callid_t iid, ipc_call_t *icall)
static int	file_bd_init (const char *fname)
static int	file_bd_read_blocks (uint64_t ba, size_t cnt, void *buf)
	Read blocks from the device.
static int	file_bd_write_blocks (uint64_t ba, size_t cnt, const void *buf)
	Write blocks to the device.
int	main (int argc, char **argv)
static void	print_usage (void)
Variables
static size_t	block_size
static fibril_mutex_t	dev_lock
static devmap_handle_t	devmap_handle
static FILE *	img
static aoff64_t	num_blocks

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Detailed Description

File-backed block device driver.

Allows accessing a file as a block device. Useful for, e.g., mounting a disk image.

Definition in file file_bd.c.

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