From 99bfa4ae1fd76cbcc1b5245ea6962bd083d61268 Mon Sep 17 00:00:00 2001 From: Emmanuel Gil Peyrot Date: Fri, 12 Sep 2014 00:48:28 +0200 Subject: [PATCH] FS: Implement OpenArchive, OpenDirectory, OpenFile and OpenFileDirectly calls. --- src/core/hle/service/fs.cpp | 195 ++++++++++++++++++++++++++++++++---- 1 file changed, 176 insertions(+), 19 deletions(-) diff --git a/src/core/hle/service/fs.cpp b/src/core/hle/service/fs.cpp index 9e1998b0f..8469d9840 100644 --- a/src/core/hle/service/fs.cpp +++ b/src/core/hle/service/fs.cpp @@ -12,35 +12,192 @@ namespace FS_User { +// Command to access archive file +enum class LowPathType : u32 { + Invalid = 0, + Empty = 1, + Binary = 2, + Char = 3, + Wchar = 4 +}; + +std::string GetStringFromCmdBuff(const u32 pointer, const u32 size) { + auto data = reinterpret_cast(Memory::GetPointer(pointer)); + return std::string(data, size - 1); +} + +// We currently return 0 for success and -1 for failure in cmd_buff[1]. -1 was chosen because it +// puts all the sections of the http://3dbrew.org/wiki/Error_codes to something non-zero, to make +// sure we don't mislead the application into thinking something worked. + void Initialize(Service::Interface* self) { u32* cmd_buff = Service::GetCommandBuffer(); - cmd_buff[1] = 0; // No error + + // TODO(Link Mauve): check the behavior when cmd_buff[1] isn't 32, as per + // http://3dbrew.org/wiki/FS:Initialize#Request + cmd_buff[1] = 0; + + DEBUG_LOG(KERNEL, "called"); +} + +void OpenFile(Service::Interface* self) { + u32* cmd_buff = Service::GetCommandBuffer(); + + u32 transaction = cmd_buff[1]; + // TODO(Link Mauve): cmd_buff[2], aka archive handle lower word, isn't used according to + // 3dmoo's or ctrulib's implementations. Triple check if it's really the case. + Handle archive_handle = static_cast(cmd_buff[3]); + LowPathType type = static_cast(cmd_buff[4]); + u32 size = cmd_buff[5]; + FileSys::Mode mode; mode.hex = cmd_buff[6]; + u32 attributes = cmd_buff[7]; // TODO(Link Mauve): do something with those attributes. + u32 pointer = cmd_buff[9]; + + if (type != LowPathType::Char) { + ERROR_LOG(KERNEL, "file LowPath type other than char is currently unsupported"); + cmd_buff[1] = -1; + return; + } + + std::string file_name = GetStringFromCmdBuff(pointer, size); + + DEBUG_LOG(KERNEL, "type=%d size=%d mode=%d attrs=%d data=%s", type, size, mode, attributes, file_name.c_str()); + + Handle handle = Kernel::OpenFileFromArchive(archive_handle, file_name, mode); + if (handle) { + cmd_buff[1] = 0; + cmd_buff[3] = handle; + } else { + ERROR_LOG(KERNEL, "failed to get a handle for file %s", file_name.c_str()); + // TODO(Link Mauve): check for the actual error values, this one was just chosen arbitrarily. + cmd_buff[1] = -1; + } + DEBUG_LOG(KERNEL, "called"); } void OpenFileDirectly(Service::Interface* self) { u32* cmd_buff = Service::GetCommandBuffer(); - FileSys::Archive::IdCode arch_id = static_cast(cmd_buff[2]); + u32 transaction = cmd_buff[1]; + auto archive_id = static_cast(cmd_buff[2]); + LowPathType archive_type = static_cast(cmd_buff[3]); + u32 archive_size = cmd_buff[4]; + LowPathType type = static_cast(cmd_buff[5]); + u32 size = cmd_buff[6]; + FileSys::Mode mode; mode.hex = cmd_buff[7]; + u32 attributes = cmd_buff[8]; // TODO(Link Mauve): do something with those attributes. + u32 archive_pointer = cmd_buff[10]; + u32 pointer = cmd_buff[12]; - // TODO(bunnei): Properly implement use of these... - //u32 transaction = cmd_buff[1]; - //u32 arch_lowpath_type = cmd_buff[3]; - //u32 arch_lowpath_sz = cmd_buff[4]; - //u32 file_lowpath_type = cmd_buff[5]; - //u32 file_lowpath_sz = cmd_buff[6]; - //u32 flags = cmd_buff[7]; - //u32 attr = cmd_buff[8]; - //u32 arch_lowpath_desc = cmd_buff[9]; - //u32 arch_lowpath_ptr = cmd_buff[10]; - //u32 file_lowpath_desc = cmd_buff[11]; - //u32 file_lowpath_ptr = cmd_buff[12]; + if (archive_type != LowPathType::Empty) { + ERROR_LOG(KERNEL, "archive LowPath type other than empty is currently unsupported"); + cmd_buff[1] = -1; + return; + } + + if (type != LowPathType::Char) { + ERROR_LOG(KERNEL, "file LowPath type other than char is currently unsupported"); + cmd_buff[1] = -1; + return; + } + + std::string archive_name = GetStringFromCmdBuff(archive_pointer, archive_size); + std::string file_name = GetStringFromCmdBuff(pointer, size); + + DEBUG_LOG(KERNEL, "archive_type=%d archive_size=%d archive_data=%s" + "file_type=%d file_size=%d file_mode=%d file_attrs=%d file_data=%s", + archive_type, archive_size, archive_name.c_str(), + type, size, mode, attributes, file_name.c_str()); + + // TODO(Link Mauve): check if we should even get a handle for the archive, and don't leak it. + Handle archive_handle = Kernel::OpenArchive(archive_id); + if (archive_handle) { + cmd_buff[1] = 0; + // cmd_buff[2] isn't used according to 3dmoo's implementation. + cmd_buff[3] = archive_handle; + } else { + ERROR_LOG(KERNEL, "failed to get a handle for archive %s", archive_name.c_str()); + // TODO(Link Mauve): check for the actual error values, this one was just chosen arbitrarily. + cmd_buff[1] = -1; + return; + } + + Handle handle = Kernel::OpenFileFromArchive(archive_handle, file_name, mode); + if (handle) { + cmd_buff[1] = 0; + cmd_buff[3] = handle; + } else { + ERROR_LOG(KERNEL, "failed to get a handle for file %s", file_name.c_str()); + // TODO(Link Mauve): check for the actual error values, this one was just chosen arbitrarily. + cmd_buff[1] = -1; + } + + DEBUG_LOG(KERNEL, "called"); +} + +void OpenDirectory(Service::Interface* self) { + u32* cmd_buff = Service::GetCommandBuffer(); + + // TODO(Link Mauve): cmd_buff[2], aka archive handle lower word, isn't used according to + // 3dmoo's or ctrulib's implementations. Triple check if it's really the case. + Handle archive_handle = static_cast(cmd_buff[2]); + LowPathType type = static_cast(cmd_buff[3]); + u32 size = cmd_buff[4]; + u32 pointer = cmd_buff[6]; + + if (type != LowPathType::Char) { + ERROR_LOG(KERNEL, "directory LowPath type other than char is currently unsupported"); + cmd_buff[1] = -1; + return; + } + + std::string dir_name = GetStringFromCmdBuff(pointer, size); + + DEBUG_LOG(KERNEL, "type=%d size=%d data=%s", type, size, dir_name.c_str()); + + Handle handle = Kernel::OpenDirectoryFromArchive(archive_handle, dir_name); + if (handle) { + cmd_buff[1] = 0; + cmd_buff[3] = handle; + } else { + ERROR_LOG(KERNEL, "failed to get a handle for directory %s", dir_name.c_str()); + // TODO(Link Mauve): check for the actual error values, this one was just chosen arbitrarily. + cmd_buff[1] = -1; + } + + DEBUG_LOG(KERNEL, "called"); +} + +void OpenArchive(Service::Interface* self) { + u32* cmd_buff = Service::GetCommandBuffer(); + + auto arch_id = static_cast(cmd_buff[1]); + LowPathType type = static_cast(cmd_buff[2]); + u32 size = cmd_buff[3]; + u32 pointer = cmd_buff[5]; + + if (type != LowPathType::Empty) { + ERROR_LOG(KERNEL, "archive LowPath type other than empty is currently unsupported"); + cmd_buff[1] = -1; + return; + } + + std::string archive_name = GetStringFromCmdBuff(pointer, size); + + DEBUG_LOG(KERNEL, "type=%d size=%d data=%s", type, size, archive_name.c_str()); Handle handle = Kernel::OpenArchive(arch_id); - if (0 != handle) { - cmd_buff[1] = 0; // No error + if (handle) { + cmd_buff[1] = 0; + // cmd_buff[2] isn't used according to 3dmoo's implementation. cmd_buff[3] = handle; + } else { + ERROR_LOG(KERNEL, "failed to get a handle for archive %s", archive_name.c_str()); + // TODO(Link Mauve): check for the actual error values, this one was just chosen arbitrarily. + cmd_buff[1] = -1; } + DEBUG_LOG(KERNEL, "called"); } @@ -48,7 +205,7 @@ const Interface::FunctionInfo FunctionTable[] = { {0x000100C6, nullptr, "Dummy1"}, {0x040100C4, nullptr, "Control"}, {0x08010002, Initialize, "Initialize"}, - {0x080201C2, nullptr, "OpenFile"}, + {0x080201C2, OpenFile, "OpenFile"}, {0x08030204, OpenFileDirectly, "OpenFileDirectly"}, {0x08040142, nullptr, "DeleteFile"}, {0x08050244, nullptr, "RenameFile"}, @@ -57,8 +214,8 @@ const Interface::FunctionInfo FunctionTable[] = { {0x08080202, nullptr, "CreateFile"}, {0x08090182, nullptr, "CreateDirectory"}, {0x080A0244, nullptr, "RenameDirectory"}, - {0x080B0102, nullptr, "OpenDirectory"}, - {0x080C00C2, nullptr, "OpenArchive"}, + {0x080B0102, OpenDirectory, "OpenDirectory"}, + {0x080C00C2, OpenArchive, "OpenArchive"}, {0x080D0144, nullptr, "ControlArchive"}, {0x080E0080, nullptr, "CloseArchive"}, {0x080F0180, nullptr, "FormatThisUserSaveData"},