disk_streamer.c File Reference

#include "disk_streamer.h"
#include <kernel.h>
#include <common/assert.h>
#include <stdbool.h>
#include "disk.h"
#include "memory/heap/kheap.h"

Functions
struct disk_stream *	diskstreamer_new (int disk_id)
	Allocates and sets up new disk_stream struct.
int	diskstreamer_seek (struct disk_stream *stream, int pos)
	Seeks into specified offset in stream.
int	diskstreamer_read (struct disk_stream *stream, void *out, int total)
	Reads specified amount of bytes into buffer.
void	diskstreamer_close (struct disk_stream *stream)
	Frees allocated disk_stream.

Function Documentation

diskstreamer_close()

void diskstreamer_close

(

struct disk_stream *

stream

)

Frees allocated disk_stream.

Parameters

stream

Stream to close

References kfree().

diskstreamer_new()

struct disk_stream * diskstreamer_new

(

int

disk_id

)

Allocates and sets up new disk_stream struct.

Parameters

disk_id

Disk ID

Returns

struct disk_stream* Created struct

References disk_stream::disk, disk_get(), kzalloc(), and disk_stream::pos.

diskstreamer_read()

int diskstreamer_read	(	struct disk_stream *	stream,
		void *	out,
		int	total )

Reads specified amount of bytes into buffer.

Parameters

stream	Stream to read
out	Target buffer
total	Total amount of bytes to read

Returns

int Status

References assert, disk_stream::disk, disk_read_block(), DISK_SECTOR_SIZE, offset, and disk_stream::pos.

diskstreamer_seek()

int diskstreamer_seek	(	struct disk_stream *	stream,
		int	pos )

Seeks into specified offset in stream.

Parameters

stream	Stream to seek
pos	Bytes from 0

Returns

int 0

References disk_stream::pos.