#include "stdafx.h"
#include "Emu/System.h"
#include "Emu/IdManager.h"
#include "Emu/Cell/PPUModule.h"

#include "Emu/Cell/lv2/sys_fs.h"
#include "cellFs.h"

#include "Utilities/StrUtil.h"

#include <mutex>

logs::channel cellFs("cellFs", logs::level::notice);

s32 cellFsOpen(vm::cptr<char> path, s32 flags, vm::ptr<u32> fd, vm::cptr<void> arg, u64 size)
{
	cellFs.warning("cellFsOpen(path=*0x%x, flags=%#o, fd=*0x%x, arg=*0x%x, size=0x%llx) -> sys_fs_open()", path, flags, fd, arg, size);

	// TODO

	// call the syscall
	return sys_fs_open(path, flags, fd, flags & CELL_FS_O_CREAT ? CELL_FS_S_IRUSR | CELL_FS_S_IWUSR : 0, arg, size);
}

s32 cellFsRead(u32 fd, vm::ptr<void> buf, u64 nbytes, vm::ptr<u64> nread)
{
	cellFs.trace("cellFsRead(fd=0x%x, buf=0x%x, nbytes=0x%llx, nread=0x%x)", fd, buf, nbytes, nread);

	// call the syscall
	return sys_fs_read(fd, buf, nbytes, nread ? nread : vm::var<u64>{});
}

s32 cellFsWrite(u32 fd, vm::cptr<void> buf, u64 nbytes, vm::ptr<u64> nwrite)
{
	cellFs.trace("cellFsWrite(fd=0x%x, buf=*0x%x, nbytes=0x%llx, nwrite=*0x%x)", fd, buf, nbytes, nwrite);

	// call the syscall
	return sys_fs_write(fd, buf, nbytes, nwrite ? nwrite : vm::var<u64>{});
}

s32 cellFsClose(u32 fd)
{
	cellFs.trace("cellFsClose(fd=0x%x)", fd);

	// call the syscall
	return sys_fs_close(fd);
}

s32 cellFsOpendir(vm::cptr<char> path, vm::ptr<u32> fd)
{
	cellFs.warning("cellFsOpendir(path=*0x%x, fd=*0x%x) -> sys_fs_opendir()", path, fd);

	// TODO

	// call the syscall
	return sys_fs_opendir(path, fd);
}

s32 cellFsReaddir(u32 fd, vm::ptr<CellFsDirent> dir, vm::ptr<u64> nread)
{
	cellFs.trace("cellFsReaddir(fd=0x%x, dir=*0x%x, nread=*0x%x)", fd, dir, nread);

	if (!dir || !nread)
	{
		return CELL_EFAULT;
	}

	// call the syscall
	return sys_fs_readdir(fd, dir, nread);
}

s32 cellFsClosedir(u32 fd)
{
	cellFs.trace("cellFsClosedir(fd=0x%x)", fd);

	// call the syscall
	return sys_fs_closedir(fd);
}

s32 cellFsStat(vm::cptr<char> path, vm::ptr<CellFsStat> sb)
{
	cellFs.warning("cellFsStat(path=*0x%x, sb=*0x%x) -> sys_fs_stat()", path, sb);

	// TODO

	// call the syscall
	return sys_fs_stat(path, sb);
}

s32 cellFsFstat(u32 fd, vm::ptr<CellFsStat> sb)
{
	cellFs.trace("cellFsFstat(fd=0x%x, sb=*0x%x)", fd, sb);

	// call the syscall
	return sys_fs_fstat(fd, sb);
}

s32 cellFsMkdir(vm::cptr<char> path, s32 mode)
{
	cellFs.warning("cellFsMkdir(path=*0x%x, mode=%#o) -> sys_fs_mkdir()", path, mode);

	// TODO

	// call the syscall
	return sys_fs_mkdir(path, mode);
}

s32 cellFsRename(vm::cptr<char> from, vm::cptr<char> to)
{
	cellFs.warning("cellFsRename(from=*0x%x, to=*0x%x) -> sys_fs_rename()", from, to);

	// TODO

	// call the syscall
	return sys_fs_rename(from, to);
}

s32 cellFsRmdir(vm::cptr<char> path)
{
	cellFs.warning("cellFsRmdir(path=*0x%x) -> sys_fs_rmdir()", path);

	// TODO

	// call the syscall
	return sys_fs_rmdir(path);
}

s32 cellFsUnlink(vm::cptr<char> path)
{
	cellFs.warning("cellFsUnlink(path=*0x%x) -> sys_fs_unlink()", path);

	// TODO

	// call the syscall
	return sys_fs_unlink(path);
}

s32 cellFsLseek(u32 fd, s64 offset, u32 whence, vm::ptr<u64> pos)
{
	cellFs.trace("cellFsLseek(fd=0x%x, offset=0x%llx, whence=0x%x, pos=*0x%x)", fd, offset, whence, pos);

	if (!pos)
	{
		return CELL_EFAULT;
	}

	// call the syscall
	return sys_fs_lseek(fd, offset, whence, pos);
}

s32 cellFsFsync(u32 fd)
{
	cellFs.todo("cellFsFsync(fd=0x%x)", fd);

	return CELL_OK;
}

s32 cellFsFGetBlockSize(u32 fd, vm::ptr<u64> sector_size, vm::ptr<u64> block_size)
{
	cellFs.trace("cellFsFGetBlockSize(fd=0x%x, sector_size=*0x%x, block_size=*0x%x)", fd, sector_size, block_size);

	if (!sector_size || !block_size)
	{
		return CELL_EFAULT;
	}

	// call the syscall
	return sys_fs_fget_block_size(fd, sector_size, block_size, vm::var<u64>{}, vm::var<u64>{});
}

s32 cellFsGetBlockSize(vm::cptr<char> path, vm::ptr<u64> sector_size, vm::ptr<u64> block_size)
{
	cellFs.warning("cellFsGetBlockSize(path=*0x%x, sector_size=*0x%x, block_size=*0x%x) -> sys_fs_get_block_size()", path, sector_size, block_size);

	// TODO

	// call the syscall
	return sys_fs_get_block_size(path, sector_size, block_size, vm::var<u64>{});
}

s32 cellFsTruncate(vm::cptr<char> path, u64 size)
{
	cellFs.warning("cellFsTruncate(path=*0x%x, size=0x%llx) -> sys_fs_truncate()", path, size);

	// TODO

	// call the syscall
	return sys_fs_truncate(path, size);
}

s32 cellFsFtruncate(u32 fd, u64 size)
{
	cellFs.trace("cellFsFtruncate(fd=0x%x, size=0x%llx)", fd, size);

	// call the syscall
	return sys_fs_ftruncate(fd, size);
}

s32 cellFsChmod(vm::cptr<char> path, s32 mode)
{
	cellFs.warning("cellFsChmod(path=*0x%x, mode=%#o) -> sys_fs_chmod()", path, mode);

	// TODO

	// call the syscall
	return sys_fs_chmod(path, mode);
}

s32 cellFsGetFreeSize(vm::cptr<char> path, vm::ptr<u32> block_size, vm::ptr<u64> block_count)
{
	cellFs.warning("cellFsGetFreeSize(path=*0x%x, block_size=*0x%x, block_count=*0x%x)", path, block_size, block_count);
	cellFs.warning("*** path = '%s'", path.get_ptr());

	// TODO: Get real values. Currently, it always returns 40 GB of free space divided in 4 KB blocks
	*block_size = 4096; // ?
	*block_count = 10 * 1024 * 1024; // ?

	return CELL_OK;
}

s32 cellFsGetDirectoryEntries(u32 fd, vm::ptr<CellFsDirectoryEntry> entries, u32 entries_size, vm::ptr<u32> data_count)
{
	cellFs.warning("cellFsGetDirectoryEntries(fd=%d, entries=*0x%x, entries_size=0x%x, data_count=*0x%x)", fd, entries, entries_size, data_count);

	const auto directory = idm::get<lv2_dir>(fd);

	if (!directory)
	{
		return CELL_EBADF;
	}

	u32 count = 0;

	entries_size /= sizeof(CellFsDirectoryEntry);

	for (; count < entries_size; count++)
	{
		fs::dir_entry info;

		if (directory->dir.read(info))
		{
			entries[count].attribute.mode = info.is_directory ? CELL_FS_S_IFDIR | 0777 : CELL_FS_S_IFREG | 0666;
			entries[count].attribute.uid = 1; // ???
			entries[count].attribute.gid = 1; // ???
			entries[count].attribute.atime = info.atime;
			entries[count].attribute.mtime = info.mtime;
			entries[count].attribute.ctime = info.ctime;
			entries[count].attribute.size = info.size;
			entries[count].attribute.blksize = 4096; // ???

			entries[count].entry_name.d_type = info.is_directory ? CELL_FS_TYPE_DIRECTORY : CELL_FS_TYPE_REGULAR;
			entries[count].entry_name.d_namlen = u8(std::min<size_t>(info.name.size(), CELL_FS_MAX_FS_FILE_NAME_LENGTH));
			strcpy_trunc(entries[count].entry_name.d_name, info.name);
		}
		else
		{
			break;
		}
	}

	*data_count = count;

	return CELL_OK;
}

ppu_error_code cellFsReadWithOffset(u32 fd, u64 offset, vm::ptr<void> buf, u64 buffer_size, vm::ptr<u64> nread)
{
	cellFs.trace("cellFsReadWithOffset(fd=%d, offset=0x%llx, buf=*0x%x, buffer_size=0x%llx, nread=*0x%x)", fd, offset, buf, buffer_size, nread);

	if (fd - 3 > 252)
	{
		if (nread) *nread = 0;
		return CELL_EBADF;
	}

	vm::var<lv2_file_op_rw> arg;

	arg->_vtable = vm::cast(0xfa8a0000); // Intentionally wrong (provide correct vtable if necessary)
	
	arg->op = 0x8000000a;
	arg->fd = fd;
	arg->buf = buf;
	arg->offset = offset;
	arg->size = buffer_size;

	// Call the syscall
	const s32 rc = sys_fs_fcntl(fd, 0x8000000a, arg, arg.size());

	// Write size read
	if (nread) *nread = rc && rc != CELL_EFSSPECIFIC ? 0 : arg->out_size.value();

	return NOT_AN_ERROR(rc ? rc : arg->out_code.value());
}

ppu_error_code cellFsWriteWithOffset(u32 fd, u64 offset, vm::cptr<void> buf, u64 data_size, vm::ptr<u64> nwrite)
{
	cellFs.trace("cellFsWriteWithOffset(fd=%d, offset=0x%llx, buf=*0x%x, data_size=0x%llx, nwrite=*0x%x)", fd, offset, buf, data_size, nwrite);

	if (!buf)
	{
		if (nwrite) *nwrite = 0;
		return CELL_EFAULT;
	}

	if (fd - 3 > 252)
	{
		if (nwrite) *nwrite = 0;
		return CELL_EBADF;
	}

	vm::var<lv2_file_op_rw> arg;

	arg->_vtable = vm::cast(0xfa8b0000); // Intentionally wrong (provide correct vtable if necessary)
	
	arg->op = 0x8000000b;
	arg->fd = fd;
	arg->buf = vm::const_ptr_cast<void>(buf);
	arg->offset = offset;
	arg->size = data_size;

	// Call the syscall
	const s32 rc = sys_fs_fcntl(fd, 0x8000000b, arg, arg.size());

	// Write size written
	if (nwrite) *nwrite = rc && rc != CELL_EFSSPECIFIC ? 0 : arg->out_size.value();

	return NOT_AN_ERROR(rc ? rc : arg->out_code.value());
}

s32 cellFsStReadInit(u32 fd, vm::cptr<CellFsRingBuffer> ringbuf)
{
	cellFs.todo("cellFsStReadInit(fd=%d, ringbuf=*0x%x)", fd, ringbuf);

	if (ringbuf->copy & ~CELL_FS_ST_COPYLESS)
	{
		return CELL_EINVAL;
	}

	if (ringbuf->block_size & 0xfff) // check if a multiple of sector size
	{
		return CELL_EINVAL;
	}

	if (ringbuf->ringbuf_size % ringbuf->block_size) // check if a multiple of block_size
	{
		return CELL_EINVAL;
	}

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}
	
	if (file->flags & CELL_FS_O_WRONLY)
	{
		return CELL_EPERM;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadFinish(u32 fd)
{
	cellFs.todo("cellFsStReadFinish(fd=%d)", fd);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF; // ???
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadGetRingBuf(u32 fd, vm::ptr<CellFsRingBuffer> ringbuf)
{
	cellFs.todo("cellFsStReadGetRingBuf(fd=%d, ringbuf=*0x%x)", fd, ringbuf);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadGetStatus(u32 fd, vm::ptr<u64> status)
{
	cellFs.todo("cellFsStReadGetRingBuf(fd=%d, status=*0x%x)", fd, status);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadGetRegid(u32 fd, vm::ptr<u64> regid)
{
	cellFs.todo("cellFsStReadGetRingBuf(fd=%d, regid=*0x%x)", fd, regid);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadStart(u32 fd, u64 offset, u64 size)
{
	cellFs.todo("cellFsStReadStart(fd=%d, offset=0x%llx, size=0x%llx)", fd, offset, size);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadStop(u32 fd)
{
	cellFs.todo("cellFsStReadStop(fd=%d)", fd);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStRead(u32 fd, vm::ptr<u8> buf, u64 size, vm::ptr<u64> rsize)
{
	cellFs.todo("cellFsStRead(fd=%d, buf=*0x%x, size=0x%llx, rsize=*0x%x)", fd, buf, size, rsize);
	
	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadGetCurrentAddr(u32 fd, vm::ptr<u32> addr, vm::ptr<u64> size)
{
	cellFs.todo("cellFsStReadGetCurrentAddr(fd=%d, addr=*0x%x, size=*0x%x)", fd, addr, size);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadPutCurrentAddr(u32 fd, vm::ptr<u8> addr, u64 size)
{
	cellFs.todo("cellFsStReadPutCurrentAddr(fd=%d, addr=*0x%x, size=0x%llx)", fd, addr, size);
	
	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO

	return CELL_OK;
}

s32 cellFsStReadWait(u32 fd, u64 size)
{
	cellFs.todo("cellFsStReadWait(fd=%d, size=0x%llx)", fd, size);
	
	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO
	
	return CELL_OK;
}

s32 cellFsStReadWaitCallback(u32 fd, u64 size, vm::ptr<void(s32 xfd, u64 xsize)> func)
{
	cellFs.todo("cellFsStReadWaitCallback(fd=%d, size=0x%llx, func=*0x%x)", fd, size, func);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	// TODO
	
	return CELL_OK;
}

bool sdata_check(u32 version, u32 flags, u64 filesizeInput, u64 filesizeTmp)
{
	if (version > 4 || flags & 0x7EFFFFC0){
		printf("ERROR: unknown version");
		return false;
	}

	if ((version == 1 && (flags & 0x7FFFFFFE)) ||
		(version == 2 && (flags & 0x7EFFFFC0))){
		printf("ERROR: unknown or unsupported type");
		return false;
	}

	if (filesizeTmp > filesizeInput){
		printf("ERROR: input file size is too short.");
		return false;
	}

	if (!(flags & 0x80000000)){
		printf("ERROR: cannot extract finalized edata.");
		return false;
	}

	return true;
}

s32 sdata_unpack(const std::string& packed_file, const std::string& unpacked_file)
{
	fs::file packed_stream(vfs::get(packed_file));
	fs::file unpacked_stream(vfs::get(unpacked_file), fs::rewrite);

	if (!packed_stream)
	{
		cellFs.error("File '%s' not found!", packed_file);
		return CELL_ENOENT;
	}

	if (!unpacked_stream)
	{
		cellFs.error("File '%s' couldn't be created!", unpacked_file);
		return CELL_ENOENT;
	}

	char buffer[10200];
	packed_stream.read(buffer, 256);
	u32 format = *(be_t<u32>*)&buffer[0];
	if (format != 0x4E504400) // "NPD\x00"
	{
		cellFs.error("Illegal format. Expected 0x4E504400, but got 0x%08x", format);
		return CELL_EFSSPECIFIC;
	}

	u32 version = *(be_t<u32>*)&buffer[0x04];
	u32 flags = *(be_t<u32>*)&buffer[0x80];
	u32 blockSize = *(be_t<u32>*)&buffer[0x84];
	u64 filesizeOutput = *(be_t<u64>*)&buffer[0x88];
	u64 filesizeInput = packed_stream.size();
	u32 blockCount = (u32)((filesizeOutput + blockSize - 1) / blockSize);

	// SDATA file is compressed
	if (flags & 0x1)
	{
		cellFs.warning("cellFsSdataOpen: Compressed SDATA files are not supported yet.");
		return CELL_EFSSPECIFIC;
	}
	// SDATA file is NOT compressed
	else
	{
		u32 t1 = (flags & 0x20) ? 0x20 : 0x10;
		u32 startOffset = (blockCount * t1) + 0x100;
		u64 filesizeTmp = (filesizeOutput + 0xF) & 0xFFFFFFF0 + startOffset;

		if (!sdata_check(version, flags, filesizeInput, filesizeTmp))
		{
			cellFs.error("cellFsSdataOpen: Wrong header information.");
			return CELL_EFSSPECIFIC;
		}

		if (flags & 0x20)
		{
			packed_stream.seek(0x100);
		}
		else
		{
			packed_stream.seek(startOffset);
		}

		for (u32 i = 0; i < blockCount; i++)
		{
			if (flags & 0x20)
			{
				packed_stream.seek(t1, fs::seek_cur);
			}

			if (!(blockCount - i - 1))
			{
				blockSize = (u32)(filesizeOutput - i * blockSize);
			}

			packed_stream.read(buffer + 256, blockSize);
			unpacked_stream.write(buffer + 256, blockSize);
		}
	}

	return CELL_OK;
}

s32 cellFsSdataOpen(vm::cptr<char> path, s32 flags, vm::ptr<u32> fd, vm::cptr<void> arg, u64 size)
{
	cellFs.notice("cellFsSdataOpen(path=*0x%x, flags=%#o, fd=*0x%x, arg=*0x%x, size=0x%llx)", path, flags, fd, arg, size);

	if (flags != CELL_FS_O_RDONLY)
	{
		return CELL_EINVAL;
	}

	return cellFsOpen(path, CELL_FS_O_RDONLY, fd, vm::make_var<be_t<u32>[2]>({ 0x180, 0x10 }), 8);

	// Don't implement sdata decryption in this function, it should be done in sys_fs_open() syscall or somewhere else

	/*
	std::string suffix = path.substr(path.length() - 5, 5);
	if (suffix != ".sdat" && suffix != ".SDAT")
	return CELL_ENOTSDATA;

	std::string::size_type last_slash = path.rfind('/'); //TODO: use a filesystem library to solve this more robustly
	last_slash = last_slash == std::string::npos ? 0 : last_slash+1;
	std::string unpacked_path = "/dev_hdd1/"+path.substr(last_slash,path.length()-last_slash)+".unpacked";
	s32 ret = sdata_unpack(path, unpacked_path);
	if (ret) return ret;

	fd = idm::GetNewID(Emu.GetVFS().OpenFile(unpacked_path, vfsRead), TYPE_FS_FILE);

	return CELL_OK;
	*/
}

s32 cellFsSdataOpenByFd(u32 mself_fd, s32 flags, vm::ptr<u32> sdata_fd, u64 offset, vm::cptr<void> arg, u64 size)
{
	cellFs.todo("cellFsSdataOpenByFd(mself_fd=0x%x, flags=%#o, sdata_fd=*0x%x, offset=0x%llx, arg=*0x%x, size=0x%llx)", mself_fd, flags, sdata_fd, offset, arg, size);

	// TODO:

	return CELL_OK;
}

using fs_aio_cb_t = vm::ptr<void(vm::ptr<CellFsAio> xaio, s32 error, s32 xid, u64 size)>;

// temporarily
struct lv2_fs_mount_point
{
	std::mutex mutex;
};

struct fs_aio_thread : ppu_thread
{
	using ppu_thread::ppu_thread;

	virtual void cpu_task() override
	{
		while (cmd64 cmd = cmd_wait())
		{
			const u32 type = cmd.arg1<u32>();
			const s32 xid = cmd.arg2<s32>();
			const cmd64 cmd2 = cmd_get(1);
			const auto aio = cmd2.arg1<vm::ptr<CellFsAio>>();
			const auto func = cmd2.arg2<fs_aio_cb_t>();
			cmd_pop(1);

			s32 error = CELL_OK;
			u64 result = 0;

			const auto file = idm::get<lv2_file>(aio->fd);

			if (!file || (type == 1 && file->flags & CELL_FS_O_WRONLY) || (type == 2 && !(file->flags & CELL_FS_O_ACCMODE)))
			{
				error = CELL_EBADF;
			}
			else
			{
				std::lock_guard<std::mutex> lock(file->mp->mutex);

				const auto old_pos = file->file.pos(); file->file.seek(aio->offset);

				result = type == 2
					? file->op_write(aio->buf, aio->size)
					: file->op_read(aio->buf, aio->size);

				file->file.seek(old_pos);
			}

			func(*this, aio, error, xid, result);
		}
	}
};

struct fs_aio_manager
{
	std::shared_ptr<fs_aio_thread> thread;

	fs_aio_manager()
		: thread(idm::make_ptr<ppu_thread, fs_aio_thread>("FS AIO Thread", 500))
	{
		thread->run();
	}
};

s32 cellFsAioInit(vm::cptr<char> mount_point)
{
	cellFs.warning("cellFsAioInit(mount_point=*0x%x)", mount_point);
	cellFs.warning("*** mount_point = '%s'", mount_point.get_ptr());

	// TODO: create AIO thread (if not exists) for specified mount point
	fxm::get_always<fs_aio_manager>();

	return CELL_OK;
}

s32 cellFsAioFinish(vm::cptr<char> mount_point)
{
	cellFs.warning("cellFsAioFinish(mount_point=*0x%x)", mount_point);
	cellFs.warning("*** mount_point = '%s'", mount_point.get_ptr());

	// TODO: delete existing AIO thread for specified mount point

	return CELL_OK;
}

atomic_t<s32> g_fs_aio_id;

s32 cellFsAioRead(vm::ptr<CellFsAio> aio, vm::ptr<s32> id, fs_aio_cb_t func)
{
	cellFs.warning("cellFsAioRead(aio=*0x%x, id=*0x%x, func=*0x%x)", aio, id, func);

	// TODO: detect mount point and send AIO request to the AIO thread of this mount point

	const s32 xid = (*id = ++g_fs_aio_id);

	const auto m = fxm::get_always<fs_aio_manager>();

	m->thread->cmd_list
	({
		{ 1, xid },
		{ aio, func },
	});

	m->thread->lock_notify();

	return CELL_OK;
}

s32 cellFsAioWrite(vm::ptr<CellFsAio> aio, vm::ptr<s32> id, fs_aio_cb_t func)
{
	cellFs.warning("cellFsAioWrite(aio=*0x%x, id=*0x%x, func=*0x%x)", aio, id, func);

	// TODO: detect mount point and send AIO request to the AIO thread of this mount point

	const s32 xid = (*id = ++g_fs_aio_id);

	const auto m = fxm::get_always<fs_aio_manager>();

	m->thread->cmd_list
	({
		{ 2, xid },
		{ aio, func },
	});

	m->thread->lock_notify();

	return CELL_OK;
}

s32 cellFsAioCancel(s32 id)
{
	cellFs.todo("cellFsAioCancel(id=%d) -> CELL_EINVAL", id);

	// TODO: cancelled requests return CELL_ECANCELED through their own callbacks

	return CELL_EINVAL;
}

s32 cellFsSetDefaultContainer(u32 id, u32 total_limit)
{
	cellFs.todo("cellFsSetDefaultContainer(id=0x%x, total_limit=%d)", id, total_limit);

	return CELL_OK;
}

s32 cellFsSetIoBufferFromDefaultContainer(u32 fd, u32 buffer_size, u32 page_type)
{
	cellFs.todo("cellFsSetIoBufferFromDefaultContainer(fd=%d, buffer_size=%d, page_type=%d)", fd, buffer_size, page_type);

	const auto file = idm::get<lv2_file>(fd);

	if (!file)
	{
		return CELL_EBADF;
	}

	return CELL_OK;
}

s32 cellFsUtime()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsArcadeHddSerialNumber()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsAllocateFileAreaWithInitialData()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsAllocateFileAreaByFdWithoutZeroFill()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsSetIoBuffer()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsAllocateFileAreaByFdWithInitialData()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsTruncate2()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsChangeFileSizeWithoutAllocation()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsAllocateFileAreaWithoutZeroFill(vm::cptr<char> path, u64 size)
{
	cellFs.warning("cellFsAllocateFileAreaWithoutZeroFill(path=*0x%x, size=0x%llx)", path, size);

	return sys_fs_truncate(path, size);
}

s32 cellFsChangeFileSizeByFdWithoutAllocation()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsSetDiscReadRetrySetting()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsRegisterConversionCallback()
{
	fmt::throw_exception("Unimplemented" HERE);
}

s32 cellFsUnregisterL10nCallbacks()
{
	fmt::throw_exception("Unimplemented" HERE);
}


DECLARE(ppu_module_manager::cellFs)("sys_fs", []()
{
	REG_FUNC(sys_fs, cellFsOpen);
	REG_FUNC(sys_fs, cellFsSdataOpen);
	REG_FUNC(sys_fs, cellFsSdataOpenByFd);
	REG_FUNC(sys_fs, cellFsRead, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsWrite, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsClose, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsOpendir);
	REG_FUNC(sys_fs, cellFsReaddir, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsClosedir, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsStat);
	REG_FUNC(sys_fs, cellFsFstat, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsMkdir);
	REG_FUNC(sys_fs, cellFsRename);
	REG_FUNC(sys_fs, cellFsChmod);
	REG_FUNC(sys_fs, cellFsFsync);
	REG_FUNC(sys_fs, cellFsRmdir);
	REG_FUNC(sys_fs, cellFsUnlink);
	REG_FUNC(sys_fs, cellFsLseek, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsFtruncate, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsTruncate);
	REG_FUNC(sys_fs, cellFsFGetBlockSize, MFF_PERFECT);
	REG_FUNC(sys_fs, cellFsAioInit);
	REG_FUNC(sys_fs, cellFsAioFinish);
	REG_FUNC(sys_fs, cellFsAioRead);
	REG_FUNC(sys_fs, cellFsAioWrite);
	REG_FUNC(sys_fs, cellFsAioCancel);
	REG_FUNC(sys_fs, cellFsGetBlockSize);
	REG_FUNC(sys_fs, cellFsGetFreeSize);
	REG_FUNC(sys_fs, cellFsReadWithOffset);
	REG_FUNC(sys_fs, cellFsWriteWithOffset);
	REG_FUNC(sys_fs, cellFsGetDirectoryEntries);
	REG_FUNC(sys_fs, cellFsStReadInit);
	REG_FUNC(sys_fs, cellFsStReadFinish);
	REG_FUNC(sys_fs, cellFsStReadGetRingBuf);
	REG_FUNC(sys_fs, cellFsStReadGetStatus);
	REG_FUNC(sys_fs, cellFsStReadGetRegid);
	REG_FUNC(sys_fs, cellFsStReadStart);
	REG_FUNC(sys_fs, cellFsStReadStop);
	REG_FUNC(sys_fs, cellFsStRead);
	REG_FUNC(sys_fs, cellFsStReadGetCurrentAddr);
	REG_FUNC(sys_fs, cellFsStReadPutCurrentAddr);
	REG_FUNC(sys_fs, cellFsStReadWait);
	REG_FUNC(sys_fs, cellFsStReadWaitCallback);
	REG_FUNC(sys_fs, cellFsSetDefaultContainer);
	REG_FUNC(sys_fs, cellFsSetIoBufferFromDefaultContainer);
	REG_FUNC(sys_fs, cellFsUtime);
	REG_FUNC(sys_fs, cellFsArcadeHddSerialNumber);
	REG_FUNC(sys_fs, cellFsAllocateFileAreaWithInitialData);
	REG_FUNC(sys_fs, cellFsAllocateFileAreaByFdWithoutZeroFill);
	REG_FUNC(sys_fs, cellFsSetIoBuffer);
	REG_FUNC(sys_fs, cellFsAllocateFileAreaByFdWithInitialData);
	REG_FUNC(sys_fs, cellFsTruncate2);
	REG_FUNC(sys_fs, cellFsChangeFileSizeWithoutAllocation);
	REG_FUNC(sys_fs, cellFsAllocateFileAreaWithoutZeroFill, MFF_FORCED_HLE);
	REG_FUNC(sys_fs, cellFsChangeFileSizeByFdWithoutAllocation);
	REG_FUNC(sys_fs, cellFsSetDiscReadRetrySetting);
	REG_FUNC(sys_fs, cellFsRegisterConversionCallback);
	REG_FUNC(sys_fs, cellFsUnregisterL10nCallbacks);
});