diskdevs.c File Reference

Block device disk management implementation. More...

#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <rtems.h>
#include <rtems/libio.h>
#include <rtems/diskdevs.h>
#include <rtems/blkdev.h>
#include <rtems/bdbuf.h>

Include dependency graph for diskdevs.c:

Data Structures
struct	rtems_disk_device_table

Macros
#define	DISKTAB_INITIAL_SIZE   8

Typedefs
typedef struct rtems_disk_device_table	rtems_disk_device_table

Functions
rtems_status_code	rtems_disk_create_phys (dev_t dev, uint32_t block_size, rtems_blkdev_bnum block_count, rtems_block_device_ioctl handler, void *driver_data, const char *name)
	Creates a physical disk with device identifier dev. More...
rtems_status_code	rtems_disk_create_log (dev_t dev, dev_t phys, rtems_blkdev_bnum block_begin, rtems_blkdev_bnum block_count, const char *name)
	Creates a logical disk with device identifier dev. More...
rtems_status_code	rtems_disk_delete (dev_t dev)
	Deletes a physical or logical disk device with identifier dev. More...
rtems_disk_device *	rtems_disk_obtain (dev_t dev)
	Returns the disk device descriptor for the device identifier dev. More...
rtems_status_code	rtems_disk_release (rtems_disk_device *dd)
	Releases the disk device descriptor dd. More...
rtems_disk_device *	rtems_disk_next (dev_t dev)
	Disk device iterator. More...
rtems_status_code	rtems_disk_io_initialize (void)
	Initializes the disk device management. More...
rtems_status_code	rtems_disk_io_done (void)
	Releases all resources allocated for disk device management. More...

Detailed Description

Block device disk management implementation.

Function Documentation

rtems_disk_next()

rtems_disk_device* rtems_disk_next

(

dev_t

dev

)

Disk device iterator.

Returns the next disk device descriptor with a device identifier larger than dev. If there is no such device, NULL will be returned. Use minus one to start the search.

rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_disk_device *dd = (dev_t) -1;

while (sc == RTEMS_SUCCESSFUL && (dd = rtems_disk_next(dev)) != NULL) {
  dev = rtems_disk_get_device_identifier(dd);
  sc = rtems_disk_release(dd);
}

References RTEMS_SUCCESSFUL.