/modules/vmc/mcman/ps1mc_io.c

/*
  Copyright 2009-2010, jimmikaelkael
  Licenced under Academic Free License version 3.0
  Review Open PS2 Loader README & LICENSE files for further details.
*/

#include "mcman.h"

extern int sio2man_type;

//-------------------------------------------------------------- 
int mcman_format1(int port, int slot)
{
	register int r, i;
	register MCDevInfo *mcdi = &mcman_devinfos[port][slot];
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_format1 port%d slot%d\n", port, slot);
#endif	
	
	mcman_invhandles(port, slot);
	
	for (i = 0; i < 56; i++) {
		r = mcman_PS1pagetest(port, slot, i);
		if (r == 0)
			return sceMcResNoFormat;
		if (r != 1)
			return -41;
	}
		
	memset(mcman_PS1PDApagebuf, 0, 128);
	
	*((u32 *)&mcman_PS1PDApagebuf) = 0xa0;
	*((u16 *)&mcman_PS1PDApagebuf+4) = 0xffff;
	
	mcman_PS1PDApagebuf[127] = mcman_calcEDC(mcman_PS1PDApagebuf, 127);
	
	for (i = 1; i < 15; i++) {
		r = McWritePS1PDACard(port, slot, i, mcman_PS1PDApagebuf);
		if (r != sceMcResSucceed)
			return -42;
	}
	
	memset(mcman_PS1PDApagebuf, 0, 128);
	
	*((u32 *)&mcman_PS1PDApagebuf) = 0xffffffff;
	
	for (i = 0; i < 20; i++) {
		*((u32 *)&mcman_PS1PDApagebuf) = mcdi->bad_block_list[i];
		mcman_PS1PDApagebuf[127] = mcman_calcEDC(mcman_PS1PDApagebuf, 127);
		
		r = McWritePS1PDACard(port, slot, i + 16, mcman_PS1PDApagebuf);
		if (r != sceMcResSucceed)
			return -43;
	}
		
	mcman_wmemset(mcman_PS1PDApagebuf, 128, 0);
	
	mcman_PS1PDApagebuf[0] = 0x4d;
	mcman_PS1PDApagebuf[1] = 0x43;
	mcman_PS1PDApagebuf[127] = 0x0e;
	
	r = McWritePS1PDACard(port, slot, 0, mcman_PS1PDApagebuf);
	if (r != sceMcResSucceed)
		return -44;
			
	mcdi->cardform = 1;
	
	return sceMcResSucceed;
}

//-------------------------------------------------------------- 
int mcman_open1(int port, int slot, char *filename, int flags)
{
	register int r, i, fd, cluster, temp;
	register MC_FHANDLE *fh = (MC_FHANDLE *)&mcman_fdhandles[fd];
	McFsEntryPS1 *fse; //sp18
	McCacheEntry *mce;
	char *p = (char *)filename;
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_open1 port%d slot%d filename %s flags %x\n", port, slot, filename, flags);
#endif	
	
	if ((flags & sceMcFileCreateFile) != 0)
		flags |= sceMcFileAttrWriteable;
		
	for (fd = 0; fd < MAX_FDHANDLES; fd++) {
		fh = (MC_FHANDLE *)&mcman_fdhandles[fd];
		if (fh->status == 0)
			break;
	}
	
	if (fd == MAX_FDHANDLES)
		return -7;
			
	mcman_wmemset((void *)fh, sizeof (MC_FHANDLE), 0);	
				
	fh->port = port;
	fh->slot = slot;
	
	if (*p == '/')
		p++;
		 
	if ((*p == 0) || ((*p == '.') && (p[1] == 0))) {
		fh->filesize = 15;
		fh->drdflag = 1;
		fh->status = 1;
		return fd;
	}		
	
	r = mcman_getPS1direntry(port, slot, p, &fse, 1);
	if ((fse->mode & 0xf0) == 0xa0)
		r = -4;
	
	fh->freeclink = r;
		
	if (r >= 0) {
		if (fse->field_7d == 1)
			fh->filesize = fse->field_38;
		else
			fh->filesize = fse->length;
	}
	else
		fh->filesize = 0;
	
	fh->rdflag = flags & sceMcFileAttrReadable;
	fh->wrflag = flags & sceMcFileAttrWriteable;		
	fh->unknown1 = 0;
		
	if ((flags & sceMcFileCreateFile) == 0) {
		if (r < 0) 
			return sceMcResNoEntry;
			
		fh->status = 1;
		return fd;	
	}
	
	for (i = 0; i < MAX_FDHANDLES; i++) {
		if ((mcman_fdhandles[i].status != 0) && \
			(mcman_fdhandles[i].port == port) && (mcman_fdhandles[i].slot == slot) && \
			 	(mcman_fdhandles[i].freeclink == r) && (fh->wrflag != 0))
			return sceMcResDeniedPermit;
	}
	
	if (r >= 0) {
		r = mcman_clearPS1direntry(port, slot, r, 0);
		if (r != sceMcResSucceed)
			return r;
	}
	
	cluster = -1;
	for (i = 0; i < 15; i++) {
		r = mcman_readdirentryPS1(port, slot, i, &fse);
		if (r != sceMcResSucceed)
			return r;
		
		if ((fse->mode & 0xf0) == 0xa0) {
			if (cluster < 0)
				cluster = i;
					
			if (fse->mode != 0xa0) {
				
				mcman_wmemset((void *)fse, sizeof(McFsEntryPS1), 0);
				fse->mode = 0xa0;
				fse->linked_block = -1;
				fse->edc = mcman_calcEDC((void *)fse, 127);
				
				mce = mcman_get1stcacheEntp();
				
				if ((i + 1) < 0)
					temp = i + 8;
				else 
					temp = i + 1;	
					
				mce->wr_flag |= 1 << ((i + 1) - ((temp >> 3) << 3));
			}
		} 
	}	

	r = mcman_flushmccache(port, slot);
	if (r != sceMcResSucceed)
		return r;

	if (cluster < 0)	
		return sceMcResFullDevice;
		
	r = mcman_readdirentryPS1(port, slot, cluster, &fse);
	if (r != sceMcResSucceed)
		return r;
				
	mcman_wmemset((void *)fse, sizeof(McFsEntryPS1), 0);
	
	fse->mode = 0x51;
	fse->length = 0;
	fse->linked_block = -1;
	
	strncpy(fse->name, p, 20);
		
	if ((flags & sceMcFileAttrPDAExec) != 0)
		fse->field_7e = 1;
		
	fse->edc = mcman_calcEDC((void *)fse, 127);
	fh->freeclink = cluster;
	
	mce = mcman_get1stcacheEntp();
	
	if ((cluster + 1) < 0)
		temp = cluster + 8;
	else 
		temp = cluster + 1;	
	
	mce->wr_flag |= 1 << ((cluster + 1) - ((temp >> 3) << 3));	
		
	r = mcman_flushmccache(port, slot);
	if (r != sceMcResSucceed)
		return r;
	
	fh->unknown2 = 1;	
	fh->status = 1;
		
	return fd;
}

//-------------------------------------------------------------- 
int mcman_read1(int fd, void *buffer, int nbyte)
{
	register int r, size, temp, rpos, offset, maxsize;
	register MC_FHANDLE *fh = (MC_FHANDLE *)&mcman_fdhandles[fd];
	McCacheEntry *mce;
	u8 *p = (u8 *)buffer;
		
	if (fh->position >= fh->filesize)
		return 0;

	if (nbyte >= (fh->filesize - fh->position))
		nbyte = fh->filesize - fh->position;
			
	rpos = 0;	
	if (nbyte) {
		do {
			if (fh->position < 0)
				temp = fh->position + 0x3ff;
			else	
				temp = fh->position;
			
			offset = (fh->position - ((temp >> 10) << 10));
			maxsize = MCMAN_CLUSTERSIZE - offset;
			if (maxsize < nbyte)
				size = maxsize;
			else	
				size = nbyte;
		
			r = mcman_fatRseekPS1(fd);	
			if (r < 0)
				return r;
					
			r = mcman_readclusterPS1(fh->port, fh->slot, r, &mce);		
			if (r != sceMcResSucceed)
				return r;
				
			memcpy(&p[rpos], (void *)(mce->cl_data + offset), size);
		
			rpos += size;
			nbyte -= size;
			fh->position += size;
			
		} while (nbyte);	
	}
							
	return rpos;
}

//--------------------------------------------------------------
int mcman_write1(int fd, void *buffer, int nbyte)
{
	register int r, size, temp, wpos, offset, maxsize;
	register MC_FHANDLE *fh = (MC_FHANDLE *)&mcman_fdhandles[fd];
	McCacheEntry *mce;
	u8 *p = (u8 *)buffer;
		
	if (nbyte) {	
		if (fh->unknown2 == 0) {
			fh->unknown2 = 1;
			r = mcman_close1(fd);
			if (r != sceMcResSucceed)
				return r;
			r = mcman_flushmccache(fh->port, fh->slot);	
			if (r != sceMcResSucceed)
				return r;
		}
	}
	
	wpos = 0;	
	if (nbyte) {
				
		do {
			r = mcman_fatRseekPS1(fd);	
			
			if (r == sceMcResFullDevice) {
				r = mcman_fatWseekPS1(fd);	
				if (r == sceMcResFullDevice)
					return r;
				if (r!= sceMcResSucceed)	
					return r;
					
				r = mcman_fatRseekPS1(fd);		
			}
			else {
				if (r < 0)
					return r;
			}

			r = mcman_readclusterPS1(fh->port, fh->slot, r, &mce);		
			if (r != sceMcResSucceed)
				return r;
						
			if (fh->position < 0)
				temp = fh->position + 0x3ff;
			else	
				temp = fh->position;
							
			offset = fh->position - ((temp >> 10) << 10);
			maxsize = MCMAN_CLUSTERSIZE - offset; 
			if (maxsize < nbyte)
				size = maxsize;
			else	
				size = nbyte;
			
			memcpy((void *)(mce->cl_data + offset), &p[wpos], size);	
				
			mce->wr_flag = -1;	
			fh->position += size;
			if (fh->position >= fh->filesize)
				fh->filesize = fh->position;
			
			nbyte -= size;
			wpos += size;
			
		} while (nbyte);
			
	}
	
	mcman_close1(fd);
	
	return wpos;
}

//--------------------------------------------------------------
int mcman_dread1(int fd, fio_dirent_t *dirent)
{
	register int r;
	register MC_FHANDLE *fh = (MC_FHANDLE *)&mcman_fdhandles[fd];
	McFsEntryPS1 *fse;
	
	if (fh->position < fh->filesize) {
		do {
			r = mcman_readdirentryPS1(fh->port, fh->slot, fh->position, &fse);
			if (r != sceMcResSucceed)
				return r;
				
			if (fse->mode == 0x51)	
				break;
			
		} while (++fh->position < fh->filesize);
	}
	
	if (fh->position >= fh->filesize)
		return 0;
		
	fh->position++;	
	mcman_wmemset((void *)dirent, sizeof(fio_dirent_t), 0);
	
	strncpy(dirent->name, fse->name, 20);
	dirent->name[20] = 0;
	
	dirent->stat.mode = 0x101f;
	
	if (fse->field_7e == 1)
		dirent->stat.mode = 0x181f;
		
	if (fse->field_7d == 1) {
		*((u32 *)&dirent->stat.ctime) = *((u32 *)&fse->created);
		*((u32 *)&dirent->stat.ctime + 1) = *((u32 *)&fse->created + 1);
		*((u32 *)&dirent->stat.mtime) = *((u32 *)&fse->modified);
		*((u32 *)&dirent->stat.mtime + 1) = *((u32 *)&fse->modified + 1);
		dirent->stat.size = fse->field_38;
		dirent->stat.attr = fse->field_28;
	}
	else {
		dirent->stat.size = fse->length;
	}
			
	return 1;
}

//--------------------------------------------------------------
int mcman_getstat1(int port, int slot, char *filename, fio_stat_t *stat)
{
	register int r;
	McFsEntryPS1 *fse;
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_getstat1 port%d slot%d filename %s\n", port, slot, filename);
#endif	
	
	r = mcman_getPS1direntry(port, slot, filename, &fse, 1);
		
	if ((fse->mode & 0xf0) == 0xa0)
		r = -4;
	
	if (r < 0)
		return sceMcResNoEntry;
	
	mcman_wmemset(stat, sizeof(fio_stat_t), 0);	
	
	stat->mode = 0x1f;
	
	if (fse->field_7d == 1) {
		
		if ((fse->field_2c & sceMcFileAttrClosed) != 0)
			stat->mode = 0x9f;
		
		*((u32 *)&stat->ctime) = *((u32 *)&fse->created);
		*((u32 *)&stat->ctime+1) = *((u32 *)&fse->created+1);
		*((u32 *)&stat->mtime) = *((u32 *)&fse->modified);
		*((u32 *)&stat->mtime+1) = *((u32 *)&fse->modified+1);
		
		stat->size = fse->field_38;
		stat->attr = fse->field_28;
		
		return sceMcResSucceed;
	}
	
	stat->size = fse->length;
				
	return sceMcResSucceed;
}

//--------------------------------------------------------------
int mcman_setinfo1(int port, int slot, char *filename, sceMcTblGetDir *info, int flags)
{
	register int r, temp, ret;
	McFsEntryPS1 *fse1, *fse2;
	McCacheEntry *mce;
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_setinfo1 port%d slot%d filename %s flags %x\n", port, slot, filename, flags);
#endif	
	
	ret = 0;
	if (sio2man_type == XSIO2MAN) {
		if ((flags & sceMcFileAttrFile) != 0) {
			r = mcman_getPS1direntry(port, slot, info->EntryName, &fse1, 1);
			if (r < 0) {
				if (r != sceMcResNoEntry) {
					ret = r;
				}
				else {
					if ((!strcmp(".", info->EntryName)) || (!strcmp("..", info->EntryName)) || (info->EntryName[0] == 0))
						ret = sceMcResNoEntry;
				}	
			}
		}
	}
	
	r = mcman_getPS1direntry(port, slot, filename, &fse2, 1);
	
	if ((fse2->mode & 0xf0) == 0)
		r = sceMcResNoEntry;
	
	if (r < 0)
		return r;
	
	if (sio2man_type == XSIO2MAN) {
		if (ret != sceMcResSucceed)
			return sceMcResNoEntry;
	}
		
	mce = mcman_get1stcacheEntp();
	
	temp = r + 1;
	if ((r + 1) < 0)
		temp = r + 8;
	
	mce->wr_flag |= 1 << ((r + 1) - ((temp >> 3) << 3));
	
	if (sio2man_type == XSIO2MAN) {
		fse2->field_7d = 0;
		fse2->field_2c = 0;
		flags &= -12;
	}
	else {
		if(fse2->field_7d != 1) {
			fse2->field_7d = 1;
			fse2->field_38 = fse2->length;
		}
	}
	
	if ((flags & sceMcFileAttrExecutable) != 0) {
		if ((info->AttrFile & sceMcFileAttrPDAExec) != 0)
			fse2->field_7e = 1;
		else	
			fse2->field_7e = 0;
	}

	//Special fix clause for file managers (like uLaunchELF)
	//This allows writing most entries that can be read by mcGetDir
	//and without usual restrictions. This flags value should cause no conflict
	//as Sony code never uses it, and the value is changed after its use here.
	//This is primarily needed for PS2 MC backups, but must be implemented here
	//too since the 'flags' argument may be used indiscriminately for both
	if(flags == 0xFEED){
		flags = sceMcFileAttrReadable|sceMcFileAttrWriteable;
		//The changed flags value allows more entries to be copied below
	}

	if ((flags & sceMcFileAttrDupProhibit) != 0)
		fse2->field_28 = info->Reserve2;
	
	if ((flags & sceMcFileAttrReadable) != 0)
		fse2->created = info->_Create;
		
	if ((flags & sceMcFileAttrWriteable) != 0)
		fse2->modified = info->_Modify;

	if ((flags & sceMcFileAttrFile) != 0)
		strncpy(fse2->name, info->EntryName, 20);
		
	fse2->field_1e = 0;
	
	r = mcman_flushmccache(port, slot);
							
	return r;
}

//--------------------------------------------------------------
int mcman_getdir1(int port, int slot, char *dirname, int flags, int maxent, sceMcTblGetDir *info)
{
	register int r, i;
	char *p;
	McFsEntryPS1 *fse;
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_getdir1 port%d slot%d dirname %s maxent %d flags %x\n", port, slot, dirname, maxent, flags);
#endif	
	
	flags &= 0xffff;
	
	i = 0;
	
	if (!flags) {
		mcman_PS1curcluster = 0;
		p = dirname;
		do {
			r = mcman_chrpos(p, '/');
			if (r < 0) 
				break;
			p += mcman_chrpos(p, '/') + 1;
		} while (1);
		
		strncpy(mcman_PS1curdir, p, 63);
		
	}
	
	if (maxent) {
		do {
			if (mcman_PS1curcluster >= 15) 
				break;

			r = mcman_readdirentryPS1(port, slot, mcman_PS1curcluster, &fse);
			if (r != sceMcResSucceed)
				return r;
									
			mcman_PS1curcluster++;						
			
			if (fse->mode != 0x51)
				continue;
					
			if (!mcman_checkdirpath(fse->name, mcman_PS1curdir))
				continue;
				
			memset((void *)info, 0, sizeof (sceMcTblGetDir));		
					
			info->AttrFile = 0x9417;
				
			if (fse->field_7e == 1)
				info->AttrFile = 0x9c17; //MC_ATTR_PDAEXEC set !!!

			if (fse->field_7d == 1) {
				if ((fse->field_2c & sceMcFileAttrClosed) != 0) {
					info->AttrFile |= sceMcFileAttrClosed;
				}
				info->Reserve1 = fse->field_2e;
				info->_Create = fse->created;
				info->_Modify = fse->modified;
				info->FileSizeByte = fse->field_38;
				info->Reserve2 = fse->field_28;
			}
			else {
				info->FileSizeByte = fse->length;
			}
			
			strncpy(info->EntryName, fse->name, 20);
			info->EntryName[20] = 0;
				
			i++;
			info++;
			maxent--;
		} while (maxent);	
	}
	return i;
}

//-------------------------------------------------------------- 
int mcman_delete1(int port, int slot, char *filename, int flags)
{
	register int r;
	McFsEntryPS1 *fse;
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_delete1 port%d slot%d filename %s flags %x\n", port, slot, filename, flags);
#endif	
	
	r = mcman_getPS1direntry(port, slot, filename, &fse, ((u32)flags < 1) ? 1 : 0);
	if (r < 0)
		return r;
			
	r = mcman_clearPS1direntry(port, slot, r, flags);
		
	return r;
}

//-------------------------------------------------------------- 
int mcman_close1(int fd)
{
	register int r, temp;
	MC_FHANDLE *fh = (MC_FHANDLE *)&mcman_fdhandles[fd];
	McFsEntryPS1 *fse;
	McCacheEntry *mce;
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_close1 fd %d\n", fd);
#endif	
	
	r = mcman_readdirentryPS1(fh->port, fh->slot, fh->freeclink, &fse);
	if (r != sceMcResSucceed)
		return -31;

	mce = mcman_get1stcacheEntp();
	
	if (fh->freeclink + 1 < 0)	
		temp = fh->freeclink + 8;
	else
		temp = fh->freeclink + 1;
		
	mce->wr_flag |= 1 << ((fh->freeclink + 1) - ((temp >> 3) << 3));	
	
	if (fh->filesize == 0) {
		fse->length = 0x2000;
	}
	else {
		if ((fh->filesize - 1) < 0)
			temp = (fh->filesize + 8190) >> 13;
		else
			temp = (fh->filesize - 1) >> 13;

		temp++;
		fse->length = temp << 13;
	}
		
	if (sio2man_type == XSIO2MAN) {
		fse->field_7d = 0; // <--- To preserve for XMCMAN
		fse->field_2c = 0; //
		fse->field_38 = 0; //
		memset((void *)&fse->created, 0, 8);  //
		memset((void *)&fse->modified, 0, 8); //
	}
	else { // MCMAN does as following
		fse->field_7d = 1;
		fse->field_38 = fh->filesize;
		mcman_getmcrtime(&fse->modified);
	}
		
	fse->edc = mcman_calcEDC((void *)fse, 127);
	
	r = mcman_flushmccache(fh->port, fh->slot);
	if (r != sceMcResSucceed)
		return r;
	
	return sceMcResSucceed;
}

//-------------------------------------------------------------- 
int mcman_unformat1(int port, int slot)
{
	register int r, i;
	u32 *p;
	
#ifdef DEBUG
	DPRINTF("mcman: mcman_unformat1 port%d slot%d\n", port, slot);
#endif	
	
	p = (u32 *)&mcman_PS1PDApagebuf;
	for (i = 0; i < 32; i++)
		*p++ = 0;
	
	for (i = 0; i < 1024; i++) {	
		r = McWritePS1PDACard(port, slot, i, mcman_PS1PDApagebuf);
		if (r != sceMcResSucceed)
			return -41;
	}
	
	return r;	
}

//--------------------------------------------------------------