zone.h File Reference

zbd's header file More...

#include <libzbd/zbd.h>
#include "device.h"

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Data Structures
struct	zone_file_descriptor
	containing a zone file's metadata More...
struct	zone_meta
	containing a zoned block device's metadata More...

Functions
int	zone_open (struct device *, const char *name, int flags)
	open the zoned block deivce file More...
ssize_t	zone_write (struct device *, struct device_request *)
	write to the zoned block device More...
ssize_t	zone_read (struct device *, struct device_request *)
	read to the zoned block device More...
int	zone_erase (struct device *, struct device_request *)
	erase the segment to the zoned block device More...
int	zone_close (struct device *)
	close the zoned block device More...
int	zone_device_init (struct device *, uint64_t flags)
	initialize the device module More...
int	zone_device_exit (struct device *)
	deallocate the device module More...
static uint64_t	zone_get_zone_number (struct device *dev, struct device_address paddr)

Detailed Description

zbd's header file

Author

Gijun Oh

Version

0.2

Date

2021-10-09

Function Documentation

zone_close()

int zone_close

(

struct device *

dev

)

close the zoned block device

Parameters

dev	pointer of the device structure

Returns

0 for success, negative number for fail

zone_device_exit()

int zone_device_exit

(

struct device *

dev

)

deallocate the device module

Parameters

dev	pointer of the device structure

Returns

0 for success, negative value for fail

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zone_device_init()

int zone_device_init	(	struct device *	dev,
		uint64_t	flags
	)

initialize the device module

Parameters

dev	pointer of the device structure
flags	flags for ramdisk and device

Returns

0 for sucess, negative value for fail

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zone_erase()

int zone_erase	(	struct device *	dev,
		struct device_request *	request
	)

erase the segment to the zoned block device

Parameters

dev	pointer of the device structre
request	pointer of the user request

Returns

0 for success, negative number for fail

zone_get_zone_number()

static uint64_t zone_get_zone_number ( struct device *  dev, struct device_address  paddr  )

static

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zone_open()

int zone_open	(	struct device *	dev,
		const char *	name,
		int	flags
	)

open the zoned block deivce file

Parameters

dev	pointer of the device structure
name	zoned block device's device filename
flags	open flags for ramdisk

Returns

0 for success, negative number for fail

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zone_read()

ssize_t zone_read	(	struct device *	dev,
		struct device_request *	request
	)

read to the zoned block device

Parameters

dev	pointer of the device structre
request	pointer of the user request

Returns

the number of bytes to read, negative number for fail

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zone_write()

ssize_t zone_write	(	struct device *	dev,
		struct device_request *	request
	)

write to the zoned block device

Parameters

dev	pointer of the device structre
request	pointer of the user request

Returns

the number of bytes to write, negative number for fail

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