mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-12-23 18:31:56 +01:00
615 lines
21 KiB
C
615 lines
21 KiB
C
// Copyright 2009 Kwiirk
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// Licensed under the terms of the GNU GPL, version 2
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// http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
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#include "libwbfs.h"
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define ERROR(x) do {wbfs_error(x);goto error;}while(0)
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#define ALIGN_LBA(x) (((x)+p->hd_sec_sz-1)&(~(p->hd_sec_sz-1)))
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static int force_mode=0;
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void wbfs_set_force_mode(int force)
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{
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force_mode = force;
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}
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static u8 size_to_shift(u32 size)
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{
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u8 ret = 0;
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while(size)
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{
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ret++;
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size>>=1;
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}
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return ret-1;
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}
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#define read_le32_unaligned(x) ((x)[0]|((x)[1]<<8)|((x)[2]<<16)|((x)[3]<<24))
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wbfs_t*wbfs_open_hd(rw_sector_callback_t read_hdsector,
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rw_sector_callback_t write_hdsector,
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void *callback_data,
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int hd_sector_size, int num_hd_sector __attribute((unused)), int reset)
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{
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int i=num_hd_sector,ret;
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u8 *ptr,*tmp_buffer = wbfs_ioalloc(hd_sector_size);
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u8 part_table[16*4];
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ret = read_hdsector(callback_data,0,1,tmp_buffer);
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if(ret)
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return 0;
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//find wbfs partition
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wbfs_memcpy(part_table,tmp_buffer+0x1be,16*4);
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ptr = part_table;
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for(i=0;i<4;i++,ptr+=16)
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{
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u32 part_lba = read_le32_unaligned(ptr+0x8);
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wbfs_head_t *head = (wbfs_head_t *)tmp_buffer;
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ret = read_hdsector(callback_data,part_lba,1,tmp_buffer);
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// verify there is the magic.
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if (head->magic == wbfs_htonl(WBFS_MAGIC))
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{
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wbfs_t*p = wbfs_open_partition(read_hdsector,write_hdsector,
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callback_data,hd_sector_size,0,part_lba,reset);
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return p;
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}
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}
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if(reset)// XXX make a empty hd partition..
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{
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}
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return 0;
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}
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wbfs_t*wbfs_open_partition(rw_sector_callback_t read_hdsector,
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rw_sector_callback_t write_hdsector,
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void *callback_data,
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int hd_sector_size, int num_hd_sector, u32 part_lba, int reset)
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{
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wbfs_t *p = wbfs_malloc(sizeof(wbfs_t));
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wbfs_head_t *head = wbfs_ioalloc(hd_sector_size?hd_sector_size:512);
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//constants, but put here for consistancy
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p->wii_sec_sz = 0x8000;
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p->wii_sec_sz_s = size_to_shift(0x8000);
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p->n_wii_sec = (num_hd_sector/0x8000)*hd_sector_size;
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p->n_wii_sec_per_disc = 143432*2;//support for double layers discs..
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p->head = head;
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p->part_lba = part_lba;
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// init the partition
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if (reset)
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{
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u8 sz_s;
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wbfs_memset(head,0,hd_sector_size);
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head->magic = wbfs_htonl(WBFS_MAGIC);
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head->hd_sec_sz_s = size_to_shift(hd_sector_size);
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head->n_hd_sec = wbfs_htonl(num_hd_sector);
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// choose minimum wblk_sz that fits this partition size
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for(sz_s=6;sz_s<11;sz_s++)
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{
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// ensure that wbfs_sec_sz is big enough to address every blocks using 16 bits
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if(p->n_wii_sec <((1U<<16)*(1<<sz_s)))
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break;
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}
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head->wbfs_sec_sz_s = sz_s+p->wii_sec_sz_s;
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}else
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read_hdsector(callback_data,p->part_lba,1,head);
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if (head->magic != wbfs_htonl(WBFS_MAGIC))
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ERROR("bad magic");
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if(!force_mode && hd_sector_size && head->hd_sec_sz_s != size_to_shift(hd_sector_size))
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ERROR("hd sector size doesn't match");
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if(!force_mode && num_hd_sector && head->n_hd_sec != wbfs_htonl(num_hd_sector))
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ERROR("hd num sector doesn't match");
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p->hd_sec_sz = 1<<head->hd_sec_sz_s;
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p->hd_sec_sz_s = head->hd_sec_sz_s;
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p->n_hd_sec = wbfs_ntohl(head->n_hd_sec);
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p->n_wii_sec = (p->n_hd_sec/p->wii_sec_sz)*(p->hd_sec_sz);
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p->wbfs_sec_sz_s = head->wbfs_sec_sz_s;
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p->wbfs_sec_sz = 1<<p->wbfs_sec_sz_s;
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p->n_wbfs_sec = p->n_wii_sec >> (p->wbfs_sec_sz_s - p->wii_sec_sz_s);
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p->n_wbfs_sec_per_disc = p->n_wii_sec_per_disc >> (p->wbfs_sec_sz_s - p->wii_sec_sz_s);
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p->disc_info_sz = ALIGN_LBA(sizeof(wbfs_disc_info_t) + p->n_wbfs_sec_per_disc*2);
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//printf("hd_sector_size %X wii_sector size %X wbfs sector_size %X\n",p->hd_sec_sz,p->wii_sec_sz,p->wbfs_sec_sz);
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p->read_hdsector = read_hdsector;
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p->write_hdsector = write_hdsector;
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p->callback_data = callback_data;
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p->freeblks_lba = (p->wbfs_sec_sz - p->n_wbfs_sec/8)>>p->hd_sec_sz_s;
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if(!reset)
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p->freeblks = 0; // will alloc and read only if needed
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else
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{
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// init with all free blocks
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p->freeblks = wbfs_ioalloc(ALIGN_LBA(p->n_wbfs_sec/8));
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wbfs_memset(p->freeblks,0xff,p->n_wbfs_sec/8);
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}
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p->max_disc = (p->freeblks_lba-1)/(p->disc_info_sz>>p->hd_sec_sz_s);
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if(p->max_disc > p->hd_sec_sz - sizeof(wbfs_head_t))
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p->max_disc = p->hd_sec_sz - sizeof(wbfs_head_t);
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p->tmp_buffer = wbfs_ioalloc(p->hd_sec_sz);
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p->n_disc_open = 0;
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return p;
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error:
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wbfs_free(p);
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wbfs_iofree(head);
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return 0;
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}
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void wbfs_sync(wbfs_t*p)
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{
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// copy back descriptors
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if(p->write_hdsector){
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p->write_hdsector(p->callback_data,p->part_lba+0,1, p->head);
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if(p->freeblks)
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p->write_hdsector(p->callback_data,p->part_lba+p->freeblks_lba,ALIGN_LBA(p->n_wbfs_sec/8)>>p->hd_sec_sz_s, p->freeblks);
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}
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}
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void wbfs_close(wbfs_t*p)
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{
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wbfs_sync(p);
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if(p->n_disc_open)
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ERROR("trying to close wbfs while discs still open");
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wbfs_iofree(p->head);
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wbfs_iofree(p->tmp_buffer);
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if(p->freeblks)
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wbfs_iofree(p->freeblks);
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wbfs_free(p);
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error:
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return;
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}
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wbfs_disc_t *wbfs_open_disc(wbfs_t* p, u8 *discid)
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{
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u32 i;
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int disc_info_sz_lba = p->disc_info_sz>>p->hd_sec_sz_s;
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wbfs_disc_t *d = 0;
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for(i=0;i<p->max_disc;i++)
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{
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if (p->head->disc_table[i]){
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p->read_hdsector(p->callback_data,
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p->part_lba+1+i*disc_info_sz_lba,1,p->tmp_buffer);
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if(wbfs_memcmp(discid,p->tmp_buffer,6)==0){
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d = wbfs_malloc(sizeof(*d));
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if(!d)
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ERROR("allocating memory");
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d->p = p;
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d->i = i;
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d->header = wbfs_ioalloc(p->disc_info_sz);
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if(!d->header)
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ERROR("allocating memory");
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p->read_hdsector(p->callback_data,
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p->part_lba+1+i*disc_info_sz_lba,
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disc_info_sz_lba,d->header);
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p->n_disc_open ++;
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// for(i=0;i<p->n_wbfs_sec_per_disc;i++)
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// printf("%d,",wbfs_ntohs(d->header->wlba_table[i]));
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return d;
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}
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}
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}
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return 0;
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error:
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if(d)
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wbfs_iofree(d);
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return 0;
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}
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void wbfs_close_disc(wbfs_disc_t*d)
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{
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d->p->n_disc_open --;
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wbfs_iofree(d->header);
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wbfs_free(d);
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}
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// offset is pointing 32bit words to address the whole dvd, although len is in bytes
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int wbfs_disc_read(wbfs_disc_t*d,u32 offset, u8 *data, u32 len)
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{
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wbfs_t *p = d->p;
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u16 wlba = offset>>(p->wbfs_sec_sz_s-2);
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u32 iwlba_shift = p->wbfs_sec_sz_s - p->hd_sec_sz_s;
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u32 lba_mask = (p->wbfs_sec_sz-1)>>(p->hd_sec_sz_s);
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u32 lba = (offset>>(p->hd_sec_sz_s-2))&lba_mask;
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u32 off = offset&((p->hd_sec_sz>>2)-1);
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u16 iwlba = wbfs_ntohs(d->header->wlba_table[wlba]);
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u32 len_copied;
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int err = 0;
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u8 *ptr = data;
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if(unlikely(iwlba==0))
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return 1;
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if(unlikely(off)){
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off*=4;
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err = p->read_hdsector(p->callback_data,
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p->part_lba + (iwlba<<iwlba_shift) + lba, 1, p->tmp_buffer);
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if(err)
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return err;
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len_copied = p->hd_sec_sz - off;
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if(likely(len < len_copied))
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len_copied = len;
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wbfs_memcpy(ptr, p->tmp_buffer + off, len_copied);
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len -= len_copied;
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ptr += len_copied;
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lba++;
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if(unlikely(lba>lba_mask && len)){
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lba=0;
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iwlba = wbfs_ntohs(d->header->wlba_table[++wlba]);
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if(unlikely(iwlba==0))
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return 1;
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}
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}
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while(likely(len>=p->hd_sec_sz))
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{
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u32 nlb = len>>(p->hd_sec_sz_s);
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if(unlikely(lba + nlb > p->wbfs_sec_sz)) // dont cross wbfs sectors..
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nlb = p->wbfs_sec_sz-lba;
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err = p->read_hdsector(p->callback_data,
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p->part_lba + (iwlba<<iwlba_shift) + lba, nlb, ptr);
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if(err)
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return err;
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len -= nlb<<p->hd_sec_sz_s;
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ptr += nlb<<p->hd_sec_sz_s;
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lba += nlb;
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if(unlikely(lba>lba_mask && len)){
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lba = 0;
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iwlba =wbfs_ntohs(d->header->wlba_table[++wlba]);
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if(unlikely(iwlba==0))
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return 1;
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}
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}
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if(unlikely(len)){
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err = p->read_hdsector(p->callback_data,
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p->part_lba + (iwlba<<iwlba_shift) + lba, 1, p->tmp_buffer);
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if(err)
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return err;
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wbfs_memcpy(ptr, p->tmp_buffer, len);
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}
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return 0;
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}
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// disc listing
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u32 wbfs_count_discs(wbfs_t*p)
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{
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u32 i,count=0;
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for(i=0;i<p->max_disc;i++)
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if (p->head->disc_table[i])
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count++;
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return count;
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}
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u32 wbfs_sector_used(wbfs_t *p,wbfs_disc_info_t *di)
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{
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u32 tot_blk=0,j;
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for(j=0;j<p->n_wbfs_sec_per_disc;j++)
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if(wbfs_ntohs(di->wlba_table[j]))
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tot_blk++;
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return tot_blk;
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}
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u32 wbfs_get_disc_info(wbfs_t*p, u32 index,u8 *header,int header_size,u32 *size)//size in 32 bit
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{
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u32 i,count=0;
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int disc_info_sz_lba = p->disc_info_sz>>p->hd_sec_sz_s;
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for(i=0;i<p->max_disc;i++)
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if (p->head->disc_table[i]){
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if(count++==index)
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{
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p->read_hdsector(p->callback_data,
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p->part_lba+1+i*disc_info_sz_lba,1,p->tmp_buffer);
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if(header_size > (int)p->hd_sec_sz)
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header_size = p->hd_sec_sz;
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u32 magic = wbfs_ntohl(*(u32*)(p->tmp_buffer+24));
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if(magic!=0x5D1C9EA3){
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p->head->disc_table[i]=0;
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return 1;
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}
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memcpy(header,p->tmp_buffer,header_size);
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if(size)
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{
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u8 *header = wbfs_ioalloc(p->disc_info_sz);
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p->read_hdsector(p->callback_data,
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p->part_lba+1+i*disc_info_sz_lba,disc_info_sz_lba,header);
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u32 sec_used = wbfs_sector_used(p,(wbfs_disc_info_t *)header);
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wbfs_iofree(header);
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*size = sec_used<<(p->wbfs_sec_sz_s-2);
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}
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return 0;
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}
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}
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return 1;
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}
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static void load_freeblocks(wbfs_t*p)
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{
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if(p->freeblks)
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return;
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// XXX should handle malloc error..
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p->freeblks = wbfs_ioalloc(ALIGN_LBA(p->n_wbfs_sec/8));
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p->read_hdsector(p->callback_data,p->part_lba+p->freeblks_lba,ALIGN_LBA(p->n_wbfs_sec/8)>>p->hd_sec_sz_s, p->freeblks);
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}
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u32 wbfs_count_usedblocks(wbfs_t*p)
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{
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u32 i,j,count=0;
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load_freeblocks(p);
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for(i=0;i<p->n_wbfs_sec/(8*4);i++)
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{
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u32 v = wbfs_ntohl(p->freeblks[i]);
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if(v == ~0U)
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count+=32;
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else if(v!=0)
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for(j=0;j<32;j++)
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if (v & (1<<j))
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count++;
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}
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return count;
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}
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// write access
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static int block_used(u8 *used,u32 i,u32 wblk_sz)
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{
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u32 k;
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i*=wblk_sz;
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for(k=0;k<wblk_sz;k++)
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if(i+k<143432*2 && used[i+k])
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return 1;
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return 0;
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}
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static u32 alloc_block(wbfs_t*p)
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{
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u32 i,j;
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for(i=0;i<p->n_wbfs_sec/(8*4);i++)
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{
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u32 v = wbfs_ntohl(p->freeblks[i]);
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if(v != 0)
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{
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for(j=0;j<32;j++)
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if (v & (1<<j))
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{
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p->freeblks[i] = wbfs_htonl(v & ~(1<<j));
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return (i*32)+j+1;
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}
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}
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}
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return ~0;
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}
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static void free_block(wbfs_t *p,int bl)
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{
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int i = (bl-1)/(32);
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int j = (bl-1)&31;
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u32 v = wbfs_ntohl(p->freeblks[i]);
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p->freeblks[i] = wbfs_htonl(v | 1<<j);
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}
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u32 wbfs_add_disc(wbfs_t*p,read_wiidisc_callback_t read_src_wii_disc,
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void *callback_data,progress_callback_t spinner,partition_selector_t sel,int copy_1_1)
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{
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int i,discn;
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u32 tot,cur;
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u32 wii_sec_per_wbfs_sect = 1<<(p->wbfs_sec_sz_s-p->wii_sec_sz_s);
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wiidisc_t *d = 0;
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u8 *used = 0;
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wbfs_disc_info_t *info = 0;
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u8* copy_buffer = 0;
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used = wbfs_malloc(p->n_wii_sec_per_disc);
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if(!used)
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ERROR("unable to alloc memory");
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if(!copy_1_1)
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{
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d = wd_open_disc(read_src_wii_disc,callback_data);
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if(!d)
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ERROR("unable to open wii disc");
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wd_build_disc_usage(d,sel,used);
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wd_close_disc(d);
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d = 0;
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}
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for(i=0;i<p->max_disc;i++)// find a free slot.
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if(p->head->disc_table[i]==0)
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break;
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if(i==p->max_disc)
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ERROR("no space left on device (table full)");
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p->head->disc_table[i] = 1;
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discn = i;
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load_freeblocks(p);
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// build disc info
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info = wbfs_ioalloc(p->disc_info_sz);
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read_src_wii_disc(callback_data,0,0x100,info->disc_header_copy);
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copy_buffer = wbfs_ioalloc(p->wbfs_sec_sz);
|
|
if(!copy_buffer)
|
|
ERROR("alloc memory");
|
|
tot=0;
|
|
cur=0;
|
|
if(spinner){
|
|
// count total number to write for spinner
|
|
for(i=0; i<p->n_wbfs_sec_per_disc;i++)
|
|
if(copy_1_1 || block_used(used,i,wii_sec_per_wbfs_sect)) tot++;
|
|
spinner(0,tot);
|
|
}
|
|
for(i=0; i<p->n_wbfs_sec_per_disc;i++){
|
|
u16 bl = 0;
|
|
if(copy_1_1 || block_used(used,i,wii_sec_per_wbfs_sect)) {
|
|
bl = alloc_block(p);
|
|
if (bl==0xffff)
|
|
ERROR("no space left on device (disc full)");
|
|
read_src_wii_disc(callback_data,i*(p->wbfs_sec_sz>>2),p->wbfs_sec_sz,copy_buffer);
|
|
|
|
//fix the partition table.
|
|
if(i==(0x40000>>p->wbfs_sec_sz_s))
|
|
wd_fix_partition_table(d, sel, copy_buffer+(0x40000&(p->wbfs_sec_sz-1)));
|
|
|
|
p->write_hdsector(p->callback_data,p->part_lba+bl*(p->wbfs_sec_sz/p->hd_sec_sz),
|
|
p->wbfs_sec_sz/p->hd_sec_sz,copy_buffer);
|
|
cur++;
|
|
if(spinner)
|
|
spinner(cur,tot);
|
|
}
|
|
info->wlba_table[i] = wbfs_htons(bl);
|
|
}
|
|
// write disc info
|
|
int disc_info_sz_lba = p->disc_info_sz>>p->hd_sec_sz_s;
|
|
p->write_hdsector(p->callback_data,p->part_lba+1+discn*disc_info_sz_lba,disc_info_sz_lba,info);
|
|
wbfs_sync(p);
|
|
error:
|
|
if(d)
|
|
wd_close_disc(d);
|
|
if(used)
|
|
wbfs_free(used);
|
|
if(info)
|
|
wbfs_iofree(info);
|
|
if(copy_buffer)
|
|
wbfs_iofree(copy_buffer);
|
|
// init with all free blocks
|
|
|
|
return 0;
|
|
}
|
|
u32 wbfs_rm_disc(wbfs_t*p, u8* discid)
|
|
{
|
|
wbfs_disc_t *d = wbfs_open_disc(p,discid);
|
|
int i;
|
|
int discn = 0;
|
|
int disc_info_sz_lba = p->disc_info_sz>>p->hd_sec_sz_s;
|
|
if(!d)
|
|
return 1;
|
|
load_freeblocks(p);
|
|
discn = d->i;
|
|
for( i=0; i< p->n_wbfs_sec_per_disc; i++)
|
|
{
|
|
u32 iwlba = wbfs_ntohs(d->header->wlba_table[i]);
|
|
if (iwlba)
|
|
free_block(p,iwlba);
|
|
}
|
|
memset(d->header,0,p->disc_info_sz);
|
|
p->write_hdsector(p->callback_data,p->part_lba+1+discn*disc_info_sz_lba,disc_info_sz_lba,d->header);
|
|
p->head->disc_table[discn] = 0;
|
|
wbfs_close_disc(d);
|
|
wbfs_sync(p);
|
|
return 0;
|
|
}
|
|
|
|
u32 wbfs_ren_disc(wbfs_t*p, u8* discid, u8* newname)
|
|
{
|
|
wbfs_disc_t *d = wbfs_open_disc(p,discid);
|
|
int disc_info_sz_lba = p->disc_info_sz>>p->hd_sec_sz_s;
|
|
|
|
if(!d)
|
|
return 1;
|
|
|
|
memset(d->header->disc_header_copy+0x20, 0, 0x40);
|
|
strncpy(d->header->disc_header_copy+0x20, newname, 0x39);
|
|
|
|
p->write_hdsector(p->callback_data,p->part_lba+1+d->i*disc_info_sz_lba,disc_info_sz_lba,d->header);
|
|
wbfs_close_disc(d);
|
|
return 0;
|
|
}
|
|
|
|
// trim the file-system to its minimum size
|
|
u32 wbfs_trim(wbfs_t*p);
|
|
|
|
// data extraction
|
|
u32 wbfs_extract_disc(wbfs_disc_t*d, rw_sector_callback_t write_dst_wii_sector,void *callback_data,progress_callback_t spinner)
|
|
{
|
|
wbfs_t *p = d->p;
|
|
u8* copy_buffer = 0;
|
|
int i;
|
|
int src_wbs_nlb=p->wbfs_sec_sz/p->hd_sec_sz;
|
|
int dst_wbs_nlb=p->wbfs_sec_sz/p->wii_sec_sz;
|
|
copy_buffer = wbfs_ioalloc(p->wbfs_sec_sz);
|
|
if(!copy_buffer)
|
|
ERROR("alloc memory");
|
|
|
|
for( i=0; i< p->n_wbfs_sec_per_disc; i++)
|
|
{
|
|
u32 iwlba = wbfs_ntohs(d->header->wlba_table[i]);
|
|
if (iwlba)
|
|
{
|
|
|
|
if(spinner)
|
|
spinner(i,p->n_wbfs_sec_per_disc);
|
|
p->read_hdsector(p->callback_data, p->part_lba + iwlba*src_wbs_nlb, src_wbs_nlb, copy_buffer);
|
|
write_dst_wii_sector(callback_data, i*dst_wbs_nlb, dst_wbs_nlb, copy_buffer);
|
|
}
|
|
}
|
|
wbfs_iofree(copy_buffer);
|
|
return 0;
|
|
error:
|
|
return 1;
|
|
}
|
|
u32 wbfs_extract_file(wbfs_disc_t*d, char *path);
|
|
|
|
float wbfs_estimate_disc
|
|
(
|
|
wbfs_t *p, read_wiidisc_callback_t read_src_wii_disc,
|
|
void *callback_data,
|
|
partition_selector_t sel)
|
|
{
|
|
u8 *b;
|
|
int i;
|
|
u32 tot;
|
|
u32 wii_sec_per_wbfs_sect = 1 << (p->wbfs_sec_sz_s-p->wii_sec_sz_s);
|
|
wiidisc_t *d = 0;
|
|
u8 *used = 0;
|
|
wbfs_disc_info_t *info = 0;
|
|
|
|
tot = 0;
|
|
|
|
used = wbfs_malloc(p->n_wii_sec_per_disc);
|
|
if (!used)
|
|
{
|
|
ERROR("unable to alloc memory");
|
|
}
|
|
|
|
d = wd_open_disc(read_src_wii_disc, callback_data);
|
|
if (!d)
|
|
{
|
|
ERROR("unable to open wii disc");
|
|
}
|
|
|
|
wd_build_disc_usage(d,sel,used);
|
|
wd_close_disc(d);
|
|
d = 0;
|
|
|
|
info = wbfs_ioalloc(p->disc_info_sz);
|
|
b = (u8 *)info;
|
|
read_src_wii_disc(callback_data, 0, 0x100, info->disc_header_copy);
|
|
|
|
//fprintf(stderr, "estimating %c%c%c%c%c%c %s...\n",b[0], b[1], b[2], b[3], b[4], b[5], b + 0x20);
|
|
|
|
for (i = 0; i < p->n_wbfs_sec_per_disc; i++)
|
|
{
|
|
if (block_used(used, i, wii_sec_per_wbfs_sect))
|
|
{
|
|
tot++;
|
|
}
|
|
}
|
|
//memcpy(header, b,0x100);
|
|
|
|
error:
|
|
if (d)
|
|
wd_close_disc(d);
|
|
|
|
if (used)
|
|
wbfs_free(used);
|
|
|
|
if (info)
|
|
wbfs_iofree(info);
|
|
|
|
return tot * (((p->wbfs_sec_sz*1.0) / p->hd_sec_sz) * 512);
|
|
}
|