#include "block/rd.h"
#include "kernel.h"

ramdisk_t ramdisks[256];
char rd_refs[256];	//number of references to each ramdisk

void	rd_init()
{

}

int	rd_register(byte *ramdisk, u32_t size)
{
	int i;
	for (i = 0; i < 256; i++)
	{
		if (!rd_refs[i])
		{
			rd_refs[i]++;
			ramdisks[i].start = ramdisk;
			ramdisks[i].size = size;
			return i;
		}
	}
	return -1;
}

int	rd_remove(minor_t minor)
{
	if (rd_refs[minor] <= 0)
		return -1;
	rd_refs[minor]--;
	if (!rd_refs[minor])
		free(ramdisks[minor].start);
}

int	rd_read_block(minor_t minor, u32_t blockNum, u32_t count, byte *buffer)
{
	if (rd_refs[minor] <= 0)
		return -1;
	byte *copyFrom = ramdisks[minor] + (blockNum << 9);
	if (copyFrom > ramdisks[minor].start + ramdisks[minor].size)
		return -1;

}

int	rd_write_block(minor_t minor, u32_t blockNum, u32_t count, byte *buffer)
{

}