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https://github.com/citra-mirror/citra.git
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Core: Add a passthrough backend for the filesystem, exposed as SDMC.
This commit is contained in:
parent
9251f7e2f8
commit
e73caaefe5
@ -23,7 +23,9 @@ set(SRCS
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arm/interpreter/armvirt.cpp
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arm/interpreter/armvirt.cpp
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arm/interpreter/thumbemu.cpp
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arm/interpreter/thumbemu.cpp
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file_sys/archive_romfs.cpp
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file_sys/archive_romfs.cpp
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file_sys/archive_sdmc.cpp
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file_sys/file_romfs.cpp
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file_sys/file_romfs.cpp
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file_sys/file_sdmc.cpp
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hle/kernel/address_arbiter.cpp
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hle/kernel/address_arbiter.cpp
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hle/kernel/archive.cpp
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hle/kernel/archive.cpp
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hle/kernel/event.cpp
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hle/kernel/event.cpp
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@ -78,8 +80,10 @@ set(HEADERS
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arm/arm_interface.h
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arm/arm_interface.h
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file_sys/archive.h
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file_sys/archive.h
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file_sys/archive_romfs.h
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file_sys/archive_romfs.h
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file_sys/archive_sdmc.h
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file_sys/file.h
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file_sys/file.h
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file_sys/file_romfs.h
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file_sys/file_romfs.h
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file_sys/file_sdmc.h
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hle/kernel/address_arbiter.h
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hle/kernel/address_arbiter.h
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hle/kernel/archive.h
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hle/kernel/archive.h
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hle/kernel/event.h
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hle/kernel/event.h
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96
src/core/file_sys/archive_sdmc.cpp
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96
src/core/file_sys/archive_sdmc.cpp
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@ -0,0 +1,96 @@
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <sys/stat.h>
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#include "common/common_types.h"
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#include "common/file_util.h"
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#include "core/file_sys/archive_sdmc.h"
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#include "core/file_sys/file_sdmc.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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Archive_SDMC::Archive_SDMC(const std::string& mount_point) {
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this->mount_point = mount_point;
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DEBUG_LOG(FILESYS, "Directory %s set as SDMC.", mount_point.c_str());
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}
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Archive_SDMC::~Archive_SDMC() {
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}
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bool Archive_SDMC::Initialize() {
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if (!FileUtil::IsDirectory(mount_point)) {
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WARN_LOG(FILESYS, "Directory %s not found, disabling SDMC.", mount_point.c_str());
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return false;
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}
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return true;
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}
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/**
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* Open a file specified by its path, using the specified mode
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* @param path Path relative to the archive
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* @param mode Mode to open the file with
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* @return Opened file, or nullptr
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*/
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std::unique_ptr<File> Archive_SDMC::OpenFile(const std::string& path, const Mode mode) const {
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DEBUG_LOG(FILESYS, "called path=%s mode=%d", path.c_str(), mode);
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File_SDMC* file = new File_SDMC(this, path, mode);
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return std::unique_ptr<File>(file);
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}
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/**
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* Read data from the archive
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* @param offset Offset in bytes to start reading archive from
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* @param length Length in bytes to read data from archive
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* @param buffer Buffer to read data into
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* @return Number of bytes read
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*/
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size_t Archive_SDMC::Read(const u64 offset, const u32 length, u8* buffer) const {
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ERROR_LOG(FILESYS, "(UNIMPLEMENTED)");
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return -1;
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}
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/**
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* Write data to the archive
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* @param offset Offset in bytes to start writing data to
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* @param length Length in bytes of data to write to archive
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* @param buffer Buffer to write data from
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* @param flush The flush parameters (0 == do not flush)
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* @return Number of bytes written
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*/
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size_t Archive_SDMC::Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) {
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ERROR_LOG(FILESYS, "(UNIMPLEMENTED)");
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return -1;
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}
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/**
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* Get the size of the archive in bytes
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* @return Size of the archive in bytes
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*/
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size_t Archive_SDMC::GetSize() const {
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ERROR_LOG(FILESYS, "(UNIMPLEMENTED)");
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return 0;
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}
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/**
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* Set the size of the archive in bytes
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*/
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void Archive_SDMC::SetSize(const u64 size) {
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ERROR_LOG(FILESYS, "(UNIMPLEMENTED)");
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}
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/**
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* Getter for the path used for this Archive
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* @return Mount point of that passthrough archive
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*/
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std::string Archive_SDMC::GetMountPoint() const {
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return mount_point;
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}
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} // namespace FileSys
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79
src/core/file_sys/archive_sdmc.h
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79
src/core/file_sys/archive_sdmc.h
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@ -0,0 +1,79 @@
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#pragma once
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#include "common/common_types.h"
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#include "core/file_sys/archive.h"
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#include "core/loader/loader.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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/// File system interface to the SDMC archive
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class Archive_SDMC final : public Archive {
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public:
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Archive_SDMC(const std::string& mount_point);
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~Archive_SDMC() override;
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bool Initialize();
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/**
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* Get the IdCode of the archive (e.g. RomFS, SaveData, etc.)
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* @return IdCode of the archive
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*/
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IdCode GetIdCode() const override { return IdCode::SDMC; };
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/**
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* Open a file specified by its path, using the specified mode
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* @param path Path relative to the archive
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* @param mode Mode to open the file with
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* @return Opened file, or nullptr
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*/
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std::unique_ptr<File> OpenFile(const std::string& path, const Mode mode) const override;
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/**
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* Read data from the archive
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* @param offset Offset in bytes to start reading archive from
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* @param length Length in bytes to read data from archive
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* @param buffer Buffer to read data into
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* @return Number of bytes read
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*/
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size_t Read(const u64 offset, const u32 length, u8* buffer) const override;
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/**
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* Write data to the archive
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* @param offset Offset in bytes to start writing data to
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* @param length Length in bytes of data to write to archive
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* @param buffer Buffer to write data from
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* @param flush The flush parameters (0 == do not flush)
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* @return Number of bytes written
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*/
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size_t Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) override;
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/**
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* Get the size of the archive in bytes
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* @return Size of the archive in bytes
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*/
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size_t GetSize() const override;
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/**
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* Set the size of the archive in bytes
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*/
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void SetSize(const u64 size) override;
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/**
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* Getter for the path used for this Archive
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* @return Mount point of that passthrough archive
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*/
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std::string GetMountPoint() const;
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private:
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std::string mount_point;
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};
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} // namespace FileSys
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63
src/core/file_sys/file_sdmc.cpp
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63
src/core/file_sys/file_sdmc.cpp
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@ -0,0 +1,63 @@
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <sys/stat.h>
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#include "common/common_types.h"
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#include "common/file_util.h"
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#include "core/file_sys/file_sdmc.h"
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#include "core/file_sys/archive_sdmc.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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File_SDMC::File_SDMC(const Archive_SDMC* archive, const std::string& path, const Mode mode) {
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// TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass
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// the root directory we set while opening the archive.
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// For example, opening /../../etc/passwd can give the emulated program your users list.
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std::string real_path = archive->GetMountPoint() + path;
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if (!mode.create_flag && !FileUtil::Exists(real_path)) {
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file = nullptr;
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return;
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}
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std::string mode_string;
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if (mode.read_flag)
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mode_string += "r";
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if (mode.write_flag)
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mode_string += "w";
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file = new FileUtil::IOFile(real_path, mode_string.c_str());
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}
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File_SDMC::~File_SDMC() {
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Close();
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}
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size_t File_SDMC::Read(const u64 offset, const u32 length, u8* buffer) const {
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file->Seek(offset, SEEK_SET);
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return file->ReadBytes(buffer, length);
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}
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size_t File_SDMC::Write(const u64 offset, const u32 length, const u32 flush, const u8* buffer) const {
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file->Seek(offset, SEEK_SET);
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size_t written = file->WriteBytes(buffer, length);
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if (flush)
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file->Flush();
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return written;
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}
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size_t File_SDMC::GetSize() const {
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return file->GetSize();
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}
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bool File_SDMC::Close() const {
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return file->Close();
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}
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} // namespace FileSys
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60
src/core/file_sys/file_sdmc.h
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60
src/core/file_sys/file_sdmc.h
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#pragma once
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#include "common/common_types.h"
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#include "common/file_util.h"
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#include "core/file_sys/file.h"
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#include "core/file_sys/archive_sdmc.h"
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#include "core/loader/loader.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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class File_SDMC final : public File {
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public:
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File_SDMC();
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File_SDMC(const Archive_SDMC* archive, const std::string& path, const Mode mode);
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~File_SDMC() override;
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/**
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* Read data from the file
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* @param offset Offset in bytes to start reading data from
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* @param length Length in bytes of data to read from file
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* @param buffer Buffer to read data into
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* @return Number of bytes read
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*/
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size_t Read(const u64 offset, const u32 length, u8* buffer) const override;
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/**
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* Write data to the file
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* @param offset Offset in bytes to start writing data to
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* @param length Length in bytes of data to write to file
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* @param buffer Buffer to write data from
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* @param flush The flush parameters (0 == do not flush)
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* @return Number of bytes written
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*/
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size_t Write(const u64 offset, const u32 length, const u32 flush, const u8* buffer) const override;
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/**
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* Get the size of the file in bytes
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* @return Size of the file in bytes
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*/
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size_t GetSize() const override;
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/**
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* Close the file
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* @return true if the file closed correctly
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*/
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bool Close() const override;
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private:
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FileUtil::IOFile* file;
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};
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} // namespace FileSys
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