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#include "libultra_internal.h"
#include "controller.h"
s32 osPfsDeleteFile(OSPfs* pfs, u16 company_code, u32 game_code, u8* game_name, u8* ext_name) {
s32 file_no;
int k;
s32 ret;
__OSInode inode;
__OSDir dir;
u16 sum;
__OSInodeUnit last_page;
u8 startpage;
u8 bank;
sum = 0;
if (company_code == 0 || game_code == 0) {
return PFS_ERR_INVALID;
}
PFS_CHECK_STATUS;
PFS_CHECK_ID;
SET_ACTIVEBANK_TO_ZERO;
ERRCK(osPfsFindFile(pfs, company_code, game_code, game_name, ext_name, &file_no));
if (file_no == -1) {
return PFS_ERR_INVALID;
}
ERRCK(__osContRamRead(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*) &dir));
startpage = dir.start_page.inode_t.page;
for (bank = dir.start_page.inode_t.bank; bank < pfs->banks;) {
ERRCK(__osPfsRWInode(pfs, &inode, OS_READ, bank));
//! @todo magic constant
ERRCK(__osPfsReleasePages(pfs, &inode, startpage, &sum, bank, &last_page, 1));
ERRCK(__osPfsRWInode(pfs, &inode, OS_WRITE, bank));
if (last_page.ipage == 1) {
break;
}
bank = last_page.inode_t.bank;
startpage = last_page.inode_t.page;
}
if (bank >= pfs->banks) {
return PFS_ERR_INCONSISTENT;
}
dir.game_code = 0;
dir.company_code = 0;
dir.start_page.ipage = 0;
dir.data_sum = 0;
for (k = 0; k < ARRLEN(dir.game_name); k++) {
dir.game_name[k] = 0;
}
for (k = 0; k < ARRLEN(dir.ext_name); k++) {
dir.ext_name[k] = 0;
}
dir.status = DIR_STATUS_EMPTY;
ret = __osContRamWrite(pfs->queue, pfs->channel, pfs->dir_table + file_no, (u8*) &dir, false);
return ret;
}
s32 __osPfsReleasePages(OSPfs* pfs, __OSInode* inode, u8 start_page, u16* sum, u8 bank, __OSInodeUnit* last_page,
int flag) {
__OSInodeUnit next_page;
__OSInodeUnit old_page;
s32 ret;
int offset;
ret = 0;
next_page = inode->inode_page[start_page];
if (next_page.ipage != 1) {
if (next_page.inode_t.bank > 0) {
offset = 1;
} else {
offset = pfs->inode_start_page;
}
} else {
if (bank > 0) {
offset = 1;
} else {
offset = pfs->inode_start_page;
}
}
if (next_page.inode_t.page < offset && next_page.ipage != 1) {
return PFS_ERR_INCONSISTENT;
}
*last_page = next_page;
//! @todo magic number
if (flag == 1) {
inode->inode_page[start_page].ipage = 3;
}
ERRCK(__osBlockSum(pfs, start_page, sum, bank));
if (next_page.ipage == 1) {
return 0;
}
while (next_page.ipage >= pfs->inode_start_page) {
old_page = next_page;
next_page = inode->inode_page[next_page.inode_t.page];
inode->inode_page[old_page.inode_t.page].ipage = 3;
ERRCK(__osBlockSum(pfs, old_page.inode_t.page, sum, bank));
if (next_page.inode_t.bank != bank) {
break;
}
}
if (next_page.ipage >= pfs->inode_start_page) {
inode->inode_page[next_page.inode_t.page].ipage = 3;
}
*last_page = next_page;
return 0;
}
s32 __osBlockSum(OSPfs* pfs, u8 page_no, u16* sum, u8 bank) {
int i;
s32 ret;
u8 data[32];
ret = 0;
pfs->activebank = bank;
ERRCK(__osPfsSelectBank(pfs));
for (i = 0; i < PFS_ONE_PAGE; i++) {
ret = __osContRamRead(pfs->queue, pfs->channel, page_no * PFS_ONE_PAGE + i, data);
if (ret != 0) {
pfs->activebank = 0;
__osPfsSelectBank(pfs);
return ret;
}
*sum = *sum + __osSumcalc(data, sizeof(data));
}
pfs->activebank = 0;
ret = __osPfsSelectBank(pfs);
return ret;
}
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