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#include "ultra64.h"
#include "global.h"
s32 osPfsFileState(OSPfs* pfs, s32 fileNo, OSPfsState* state) {
s32 ret;
s32 pages;
__OSInode inode;
__OSDir dir;
__OSInodeUnit page;
u8 bank;
if (fileNo >= pfs->dir_size || fileNo < 0) {
return PFS_ERR_INVALID;
}
if (!(pfs->status & PFS_INITIALIZED)) {
return PFS_ERR_INVALID;
}
if ((ret = __osCheckId(pfs)) != 0) {
return ret;
}
if (pfs->activebank != 0 && (ret = __osPfsSelectBank(pfs, 0)) != 0) {
return ret;
}
if ((ret = __osContRamRead(pfs->queue, pfs->channel, pfs->dir_table + fileNo, (u8*)&dir)) != 0) {
return ret;
}
if (dir.company_code == 0 || dir.game_code == 0) {
return PFS_ERR_INVALID;
}
page = dir.start_page;
pages = 0;
bank = 0xFF;
while (true) {
if (page.ipage < pfs->inodeStartPage) {
break;
}
if (page.inode_t.bank != bank) {
bank = page.inode_t.bank;
if ((ret = __osPfsRWInode(pfs, &inode, PFS_READ, bank)) != 0) {
return ret;
}
}
pages++;
page = inode.inodePage[page.inode_t.page];
}
if (page.ipage != PFS_EOF) {
return PFS_ERR_INCONSISTENT;
}
state->file_size = pages * PFS_ONE_PAGE * BLOCKSIZE;
state->company_code = dir.company_code;
state->game_code = dir.game_code;
bcopy(&dir.game_name, state->game_name, PFS_FILE_NAME_LEN);
bcopy(&dir.ext_name, state->ext_name, PFS_FILE_EXT_LEN);
return __osPfsGetStatus(pfs->queue, pfs->channel);
}
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