From 19d04f3abe4427b38a04a60080f52fdf5b9ee7fe Mon Sep 17 00:00:00 2001 From: Emmanuel Gil Peyrot Date: Fri, 12 Sep 2014 00:45:40 +0200 Subject: [PATCH] Kernel: Add a File object and a getter for it from an Archive object. --- src/core/hle/kernel/archive.cpp | 109 ++++++++++++++++++++++++++++++++ src/core/hle/kernel/archive.h | 9 +++ 2 files changed, 118 insertions(+) diff --git a/src/core/hle/kernel/archive.cpp b/src/core/hle/kernel/archive.cpp index 20536f40f..24b2262bc 100644 --- a/src/core/hle/kernel/archive.cpp +++ b/src/core/hle/kernel/archive.cpp @@ -3,9 +3,11 @@ // Refer to the license.txt file included. #include "common/common_types.h" +#include "common/file_util.h" #include "common/math_util.h" #include "core/file_sys/archive.h" +#include "core/file_sys/archive_sdmc.h" #include "core/hle/service/service.h" #include "core/hle/kernel/archive.h" @@ -108,6 +110,83 @@ public: } }; +class File : public Object { +public: + std::string GetTypeName() const { return "File"; } + std::string GetName() const { return path; } + + static Kernel::HandleType GetStaticHandleType() { return HandleType::File; } + Kernel::HandleType GetHandleType() const { return HandleType::File; } + + std::string path; ///< Path of the file + std::unique_ptr backend; ///< File backend interface + + /** + * Synchronize kernel object + * @param wait Boolean wait set if current thread should wait as a result of sync operation + * @return Result of operation, 0 on success, otherwise error code + */ + Result SyncRequest(bool* wait) { + u32* cmd_buff = Service::GetCommandBuffer(); + FileCommand cmd = static_cast(cmd_buff[0]); + switch (cmd) { + + // Read from file... + case FileCommand::Read: + { + u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32; + u32 length = cmd_buff[3]; + u32 address = cmd_buff[5]; + DEBUG_LOG(KERNEL, "Read %s %s: offset=0x%x length=%d address=0x%x", + GetTypeName().c_str(), GetName().c_str(), offset, length, address); + cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address)); + break; + } + + // Write to file... + case FileCommand::Write: + { + u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32; + u32 length = cmd_buff[3]; + u32 flush = cmd_buff[4]; + u32 address = cmd_buff[6]; + DEBUG_LOG(KERNEL, "Write %s %s: offset=0x%x length=%d address=0x%x, flush=0x%x", + GetTypeName().c_str(), GetName().c_str(), offset, length, address, flush); + cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address)); + break; + } + + case FileCommand::GetSize: + { + DEBUG_LOG(KERNEL, "GetSize %s %s", GetTypeName().c_str(), GetName().c_str()); + u64 size = backend->GetSize(); + cmd_buff[2] = (u32)size; + cmd_buff[3] = size >> 32; + break; + } + + // Unknown command... + default: + ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd); + cmd_buff[1] = -1; // TODO(Link Mauve): use the correct error code for that. + return -1; + } + cmd_buff[1] = 0; // No error + return 0; + } + + /** + * Wait for kernel object to synchronize + * @param wait Boolean wait set if current thread should wait as a result of sync operation + * @return Result of operation, 0 on success, otherwise error code + */ + Result WaitSynchronization(bool* wait) { + // TODO(bunnei): ImplementMe + ERROR_LOG(OSHLE, "(UNIMPLEMENTED)"); + return 0; + } +}; + //////////////////////////////////////////////////////////////////////////////////////////////////// std::map g_archive_map; ///< Map of file archives by IdCode @@ -171,9 +250,39 @@ Handle CreateArchive(FileSys::Archive* backend, const std::string& name) { return handle; } +/** + * Open a File from an Archive + * @param archive_handle Handle to an open Archive object + * @param path Path to the File inside of the Archive + * @param mode Mode under which to open the File + * @return Opened File object + */ +Handle OpenFileFromArchive(Handle archive_handle, const std::string& path, const FileSys::Mode mode) { + File* file = new File; + Handle handle = Kernel::g_object_pool.Create(file); + + Archive* archive = Kernel::g_object_pool.GetFast(archive_handle); + file->path = path; + file->backend = archive->backend->OpenFile(path, mode); + + return handle; +} + /// Initialize archives void ArchiveInit() { g_archive_map.clear(); + + // TODO(Link Mauve): Add the other archive types (see here for the known types: + // http://3dbrew.org/wiki/FS:OpenArchive#Archive_idcodes). Currently the only half-finished + // archive type is SDMC, so it is the only one getting exposed. + + // TODO(Link Mauve): don't assume the path separator is '/'. + std::string sdmc_directory = FileUtil::GetCurrentDir() + "/userdata/sdmc"; + auto archive = new FileSys::Archive_SDMC(sdmc_directory); + if (archive->Initialize()) + CreateArchive(archive, "SDMC"); + else + ERROR_LOG(KERNEL, "Can't instantiate SDMC archive with path %s", sdmc_directory.c_str()); } /// Shutdown archives diff --git a/src/core/hle/kernel/archive.h b/src/core/hle/kernel/archive.h index 3758e7061..2629d0f26 100644 --- a/src/core/hle/kernel/archive.h +++ b/src/core/hle/kernel/archive.h @@ -29,6 +29,15 @@ Handle OpenArchive(FileSys::Archive::IdCode id_code); */ Handle CreateArchive(FileSys::Archive* backend, const std::string& name); +/** + * Open a File from an Archive + * @param archive_handle Handle to an open Archive object + * @param path Path to the File inside of the Archive + * @param mode Mode under which to open the File + * @return Opened File object + */ +Handle OpenFileFromArchive(Handle handle, const std::string& name, const FileSys::Mode mode); + /// Initialize archives void ArchiveInit();