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#include "disklab.h"
#include <stdio.h>
#include <malloc.h>
extern int fd;
extern int blk_size;
void* getoneblk(__u32 block)
{
int bytes_read;
char *buf;
if ( lseek(fd, block * blk_size, SEEK_SET) < 0) {/* ... */
printf("seek file ext2.img error....\n");
return NULL;
}
buf = malloc(blk_size);
if ( (bytes_read = read(fd, buf, blk_size)) < blk_size )
printf("read %d bytes less than %dB..\n", bytes_read, blk_size);
return buf;
}
void getlinsec(char *buf, int sector, int sector_cnt)
{
int bytes_read;
if ( lseek(fd, sector*512, SEEK_SET) < 0 ) {
printf("seek file ext2.img error ....\n");
return;
}
if ( (bytes_read = read(fd, buf, 512*sector_cnt)) < 512*sector_cnt)
printf("read %d bytes less than %d bytes..\n",
bytes_read, 512 * sector_cnt);
}
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