static void wbfs_load_header(void)
{
head = wbfs_malloc(sizeof(*head));
read_sectors(0,1,head);
if(wbfs_ntohl(head->magic)!=MAGIC)
wbfs_fatal("not a WBFS partition!");
D( wblk_sz_shift, head->blk_sz_log2-2+15 );
D( iwlba_shift, head->blk_sz_log2-9+15 );
D( lba_mask, ((1<<(wblk_sz_shift-blk_sz_shift))-1));
D( nsblk , wbfs_ntohl(head->nsblk) );
D( nblk , nsblk*512LL/(blk_sz*0x8000) );
D( freeblks_size, ALIGN512(nblk/8) );
D( disc_nblk, (143432/(1<<head->blk_sz_log2))+1 );
D( table_size, (disc_nblk)*2 );
D( header_size, ALIGN512(table_size+0x100) );
D( freeblks_o, blk_sz*0x8000-freeblks_size ); // end of first block
D( max_disc, (freeblks_o-512)/header_size );
if(max_disc > MAX_MAXDISC)
max_disc = MAX_MAXDISC;
header = wbfs_malloc(header_size);
tmp_buffer = wbfs_malloc(blk_sz);
}
static void disc_read(wiidisc_t *d,u32 offset, u8 *data, u32 len)
{
if(data){
int ret=0;
if(len==0)
return ;
ret = d->read(d->fp,offset,len,data);
if(ret)
wbfs_fatal("error reading disc (disc_read)");
}
if(d->sector_usage_table)
{
u32 blockno = offset>>13;
do
{
d->sector_usage_table[blockno]=1;
blockno+=1;
if(len>0x8000)
len-=0x8000;
}while(len>0x8000);
}