static errno_t cd_read_sectors( cdfs_t *impl, void *buf, int cd_sector, size_t nsectors )
{
phantom_disk_partition_t *p = impl->p;
SHOW_FLOW( 10, "CDFS disk read @ sect %d, nsect %d", cd_sector * 4, nsectors * 4 );
#if CD_CACHE
if( impl->cache )
{
if( 0 == cache_get_multiple( impl->cache, cd_sector, nsectors, buf ) )
return 0;
}
errno_t rc = phantom_sync_read_sector( p, buf, cd_sector * 4, nsectors * 4 );
if( impl->cache && !rc )
cache_put_multiple( impl->cache, cd_sector, nsectors, buf );
return rc;
#else
return phantom_sync_read_sector( p, buf, cd_sector * 4, nsectors * 4 );
#endif
}
errno_t fs_probe_cd(phantom_disk_partition_t *p)
{
char buf[PAGE_SIZE];
//phantom_disk_superblock *sb = (phantom_disk_superblock *)&buf;
int cd_sector = 16;
// Have some limit
while(cd_sector < 64)
{
if( phantom_sync_read_sector( p, buf, cd_sector * 4, 4 ) )
return EINVAL;
if( strncmp( buf, cd_marker, 7 ) || (buf[7] != 0) )
return EINVAL;
SHOW_FLOW( 3, "CDFS marker found @ sector %d", cd_sector );
return 0;
}
return EINVAL;
}
static void lookup_old_pc_partitions(phantom_disk_partition_t *p)
{
unsigned char buf[512];
int lookAt =
(p->flags & PART_FLAG_IS_WHOLE_DISK) ||
(p->type == 0x05) ||
(p->type == 0x0F) ||
(p->type == 0x85);
if(!lookAt ) return;
//p->syncRead( p, buf, 0, 1 );
if( phantom_sync_read_sector( p, buf, 0, 1 ))
return;
//hexdump(buf, 512, "", 0);
//SHOW_FLOW0( 1, "Got block 0" );
if( debug_level_flow > 10) hexdump( buf, sizeof(buf), "", 0);
if( (buf[0x1FE] != 0x55) || (buf[0x1FF] != 0xAA) )
{
SHOW_ERROR0( 1, "No part table magic" );
return;
}
SHOW_FLOW0( 1, "Has part table magic!" );
p->flags |= PART_FLAG_IS_DIVIDED;
int i; int pno = 0;
for( i = 0x1BE; i <= 0x1EE; i += 16, pno++ )
{
struct pc_partition *pp = (struct pc_partition *)(buf+i);
SHOW_FLOW( 2, "Check partition %d, start %d, size %d, type 0x%02X", pno, pp->start, pp->size, pp->type );
if(pp->size == 0)
continue; // break?
phantom_disk_partition_t * newp = phantom_create_partition_struct( p, pp->start, pp->size );
newp->type = pp->type;
if(newp->type == PHANTOM_PARTITION_TYPE_ID)
{
printf("!! Phantom Partition found !!\n");
p->flags |= PART_FLAG_IS_PHANTOM_TYPE;
}
char pn[4] = "PC0";
//pn[2] += pno++;
pn[2] += pno;
strncpy(newp->name, pn, PARTITION_NAME_LEN-1);
register_partition( newp );
}
}
