block_device.h File Reference

#include <miniOS/types.h>

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Classes
struct	block_device_t

Macros
#define	BLKDEV_MAX   16
#define	BLKDEV_MAJOR_SATA   8 /* SCSI/ATA disk major, matching Linux convention */

Functions
void	blkdev_init (void)
: Short device name ("sda", "sda1", ...). Must be < 16 chars.
blkdev_register() - Add a block device to the registry. @major: Device major number. @minor: Device minor number. @lba_start: First LBA of the device's data region. @lba_end: Last LBA inclusive (both 0 if not a partition). @is_partition: True if this entry represents a partition. Returns : 0 on success, -1 if the registry is full.
int	blkdev_register (const char *name, uint8_t major, uint8_t minor, uint64_t lba_start, uint64_t lba_end, bool is_partition)
const block_device_t *	blkdev_find (uint8_t major, uint8_t minor)
const block_device_t *	blkdev_get (int index)
int	blkdev_count (void)

Macro Definition Documentation

BLKDEV_MAJOR_SATA

#define BLKDEV_MAJOR_SATA   8 /* SCSI/ATA disk major, matching Linux convention */

BLKDEV_MAX

#define BLKDEV_MAX   16

Function Documentation

blkdev_count()

int blkdev_count

(

void

)

blkdev_count() - Return the number of registered block devices.

blkdev_find()

const block_device_t * blkdev_find	(	uint8_t	major,
		uint8_t	minor )

blkdev_find() - Look up a block device by major and minor number. @major: Device major number. @minor: Device minor number.

Returns

: Pointer to the registry entry, or NULL if not found.

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blkdev_get()

const block_device_t * blkdev_get

(

int

index

)

blkdev_get() - Get a block device by index. @index: Zero-based index into the registry.

Returns

: Pointer to the entry, or NULL if @index is out of range.

blkdev_init()

void blkdev_init

(

void

)

blkdev_init() - Clear the block device registry. Called once during kernel startup before any blkdev_register() calls.

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blkdev_register()

int blkdev_register	(	const char *	name,
		uint8_t	major,
		uint8_t	minor,
		uint64_t	lba_start,
		uint64_t	lba_end,
		bool	is_partition )

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