1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ata.h"
#define BLOCK_SIZE 512
static FILE* file;
int ata_read_sectors(unsigned long start, unsigned char count, void* buf)
{
if(fseek(file,start*BLOCK_SIZE,SEEK_SET)) {
perror("fseek");
return -1;
}
if(!fread(buf,BLOCK_SIZE,count,file)) {
printf("Failed reading %d blocks starting at block %ld\n",count,start);
perror("fread");
return -1;
}
return 0;
}
int ata_write_sectors(unsigned long start, unsigned char count, void* buf)
{
if(fseek(file,start*BLOCK_SIZE,SEEK_SET)) {
perror("fseek");
return -1;
}
if(!fwrite(buf,BLOCK_SIZE,count,file)) {
perror("fwrite");
return -1;
}
return 0;
}
int ata_init(void)
{
/* check disk size */
file=fopen("disk.img","r+");
if(!file) {
fprintf(stderr, "read_disk() - Could not find \"disk.img\"\n");
return -1;
}
return 0;
}
void ata_exit(void)
{
fclose(file);
}
|
