static int readBytes( int biosdev, unsigned int blkno,
unsigned int byteCount, void * buffer )
{
char * cbuf = (char *) buffer;
int error;
int copy_len;
DEBUG_DISK(("%s: dev %x block %x [%d] -> 0x%x...", __FUNCTION__,
biosdev, blkno, byteCount, (unsigned)cbuf));
for ( ; byteCount; cbuf += BPS, blkno++ )
{
error = Biosread( biosdev, blkno );
if ( error )
{
DEBUG_DISK(("error\n"));
return (-1);
}
copy_len = (byteCount > BPS) ? BPS : byteCount;
bcopy( biosbuf, cbuf, copy_len );
byteCount -= copy_len;
}
DEBUG_DISK(("done\n"));
return 0;
}
static int readBytes(int biosdev, unsigned long long blkno, unsigned int byteoff, unsigned int byteCount, void * buffer)
{
#if RAMDISK_SUPPORT
// ramdisks require completely different code for reading.
if (p_ramdiskReadBytes != NULL && biosdev >= 0x100)
{
return (*p_ramdiskReadBytes)(biosdev, blkno, byteoff, byteCount, buffer);
}
#endif
char * cbuf = (char *) buffer;
int error;
int copy_len;
// _DISK_DEBUG_DUMP("%s: dev %x block %x [%d] -> 0x%x...", __FUNCTION__, biosdev, blkno, byteCount, (unsigned)cbuf);
for (; byteCount; cbuf += copy_len, blkno++)
{
error = Biosread(biosdev, blkno);
if (error)
{
_DISK_DEBUG_DUMP(("error\n"));
return (-1);
}
copy_len = ((byteCount + byteoff) > BPS) ? (BPS - byteoff) : byteCount;
bcopy( biosbuf + byteoff, cbuf, copy_len );
byteCount -= copy_len;
byteoff = 0;
}
// _DISK_DEBUG_DUMP(("done\n"));
return 0;
}
int testBiosread(int biosdev, unsigned long long secno)
{
return Biosread(biosdev, secno);
}