From 93aa14e34572da0285de72b4da4f0fe8756d1c5f Mon Sep 17 00:00:00 2001 From: wwylele Date: Mon, 17 Oct 2016 23:00:50 +0800 Subject: [PATCH] FileSys: add SDMCArchive Now DiskArchive only serves for SDMC, then it should be just a "SDMCArchive" --- src/core/file_sys/archive_sdmc.cpp | 268 ++++++++++++++++++++++++++++- src/core/file_sys/archive_sdmc.h | 25 +++ src/core/file_sys/errors.h | 9 + 3 files changed, 301 insertions(+), 1 deletion(-) diff --git a/src/core/file_sys/archive_sdmc.cpp b/src/core/file_sys/archive_sdmc.cpp index bcb03ed36e..c747ba82c7 100644 --- a/src/core/file_sys/archive_sdmc.cpp +++ b/src/core/file_sys/archive_sdmc.cpp @@ -8,6 +8,8 @@ #include "common/logging/log.h" #include "core/file_sys/archive_sdmc.h" #include "core/file_sys/disk_archive.h" +#include "core/file_sys/errors.h" +#include "core/file_sys/path_parser.h" #include "core/settings.h" //////////////////////////////////////////////////////////////////////////////////////////////////// @@ -15,6 +17,270 @@ namespace FileSys { +ResultVal> SDMCArchive::OpenFile(const Path& path, + const Mode& mode) const { + LOG_DEBUG(Service_FS, "called path=%s mode=%01X", path.DebugStr().c_str(), mode.hex); + + const PathParser path_parser(path); + + if (!path_parser.IsValid()) { + LOG_ERROR(Service_FS, "Invalid path %s", path.DebugStr().c_str()); + return ERROR_INVALID_PATH; + } + + if (mode.hex == 0) { + LOG_ERROR(Service_FS, "Empty open mode"); + return ERROR_INVALID_OPEN_FLAGS; + } + + if (mode.create_flag && !mode.write_flag) { + LOG_ERROR(Service_FS, "Create flag set but write flag not set"); + return ERROR_INVALID_OPEN_FLAGS; + } + + const auto full_path = path_parser.BuildHostPath(mount_point); + + switch (path_parser.GetHostStatus(mount_point)) { + case PathParser::InvalidMountPoint: + LOG_CRITICAL(Service_FS, "(unreachable) Invalid mount point %s", mount_point.c_str()); + return ERROR_NOT_FOUND; + case PathParser::PathNotFound: + case PathParser::FileInPath: + LOG_ERROR(Service_FS, "Path not found %s", full_path.c_str()); + return ERROR_NOT_FOUND; + case PathParser::DirectoryFound: + LOG_ERROR(Service_FS, "%s is not a file", full_path.c_str()); + return ERROR_UNEXPECTED_FILE_OR_DIRECTORY_SDMC; + case PathParser::NotFound: + if (!mode.create_flag) { + LOG_ERROR(Service_FS, "Non-existing file %s can't be open without mode create.", + full_path.c_str()); + return ERROR_NOT_FOUND; + } else { + // Create the file + FileUtil::CreateEmptyFile(full_path); + } + break; + } + + FileUtil::IOFile file(full_path, mode.write_flag ? "r+b" : "rb"); + if (!file.IsOpen()) { + LOG_CRITICAL(Service_FS, "(unreachable) Unknown error opening %s", full_path.c_str()); + return ERROR_NOT_FOUND; + } + + auto disk_file = std::make_unique(std::move(file), mode); + return MakeResult>(std::move(disk_file)); +} + +ResultCode SDMCArchive::DeleteFile(const Path& path) const { + const PathParser path_parser(path); + + if (!path_parser.IsValid()) { + LOG_ERROR(Service_FS, "Invalid path %s", path.DebugStr().c_str()); + return ERROR_INVALID_PATH; + } + + const auto full_path = path_parser.BuildHostPath(mount_point); + + switch (path_parser.GetHostStatus(mount_point)) { + case PathParser::InvalidMountPoint: + LOG_CRITICAL(Service_FS, "(unreachable) Invalid mount point %s", mount_point.c_str()); + return ERROR_NOT_FOUND; + case PathParser::PathNotFound: + case PathParser::FileInPath: + case PathParser::NotFound: + LOG_ERROR(Service_FS, "%s not found", full_path.c_str()); + return ERROR_NOT_FOUND; + case PathParser::DirectoryFound: + LOG_ERROR(Service_FS, "%s is not a file", full_path.c_str()); + return ERROR_UNEXPECTED_FILE_OR_DIRECTORY_SDMC; + } + + if (FileUtil::Delete(full_path)) { + return RESULT_SUCCESS; + } + + LOG_CRITICAL(Service_FS, "(unreachable) Unknown error deleting %s", full_path.c_str()); + return ERROR_NOT_FOUND; +} + +ResultCode SDMCArchive::RenameFile(const Path& src_path, const Path& dest_path) const { + if (FileUtil::Rename(mount_point + src_path.AsString(), mount_point + dest_path.AsString())) { + return RESULT_SUCCESS; + } + + // TODO(yuriks): This code probably isn't right, it'll return a Status even if the file didn't + // exist or similar. Verify. + return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description + ErrorSummary::NothingHappened, ErrorLevel::Status); +} + +template +static ResultCode DeleteDirectoryHelper(const Path& path, const std::string& mount_point, + T deleter) { + const PathParser path_parser(path); + + if (!path_parser.IsValid()) { + LOG_ERROR(Service_FS, "Invalid path %s", path.DebugStr().c_str()); + return ERROR_INVALID_PATH; + } + + if (path_parser.IsRootDirectory()) + return ERROR_NOT_FOUND; + + const auto full_path = path_parser.BuildHostPath(mount_point); + + switch (path_parser.GetHostStatus(mount_point)) { + case PathParser::InvalidMountPoint: + LOG_CRITICAL(Service_FS, "(unreachable) Invalid mount point %s", mount_point.c_str()); + return ERROR_NOT_FOUND; + case PathParser::PathNotFound: + case PathParser::NotFound: + LOG_ERROR(Service_FS, "Path not found %s", full_path.c_str()); + return ERROR_NOT_FOUND; + case PathParser::FileInPath: + case PathParser::FileFound: + LOG_ERROR(Service_FS, "Unexpected file in path %s", full_path.c_str()); + return ERROR_UNEXPECTED_FILE_OR_DIRECTORY_SDMC; + } + + if (deleter(full_path)) { + return RESULT_SUCCESS; + } + + LOG_ERROR(Service_FS, "Directory not empty %s", full_path.c_str()); + return ERROR_UNEXPECTED_FILE_OR_DIRECTORY_SDMC; +} + +ResultCode SDMCArchive::DeleteDirectory(const Path& path) const { + return DeleteDirectoryHelper(path, mount_point, FileUtil::DeleteDir); +} + +ResultCode SDMCArchive::DeleteDirectoryRecursively(const Path& path) const { + return DeleteDirectoryHelper( + path, mount_point, [](const std::string& p) { return FileUtil::DeleteDirRecursively(p); }); +} + +ResultCode SDMCArchive::CreateFile(const FileSys::Path& path, u64 size) const { + const PathParser path_parser(path); + + if (!path_parser.IsValid()) { + LOG_ERROR(Service_FS, "Invalid path %s", path.DebugStr().c_str()); + return ERROR_INVALID_PATH; + } + + const auto full_path = path_parser.BuildHostPath(mount_point); + + switch (path_parser.GetHostStatus(mount_point)) { + case PathParser::InvalidMountPoint: + LOG_CRITICAL(Service_FS, "(unreachable) Invalid mount point %s", mount_point.c_str()); + return ERROR_NOT_FOUND; + case PathParser::PathNotFound: + case PathParser::FileInPath: + LOG_ERROR(Service_FS, "Path not found %s", full_path.c_str()); + return ERROR_NOT_FOUND; + case PathParser::DirectoryFound: + LOG_ERROR(Service_FS, "%s already exists", full_path.c_str()); + return ERROR_UNEXPECTED_FILE_OR_DIRECTORY_SDMC; + case PathParser::FileFound: + LOG_ERROR(Service_FS, "%s already exists", full_path.c_str()); + return ERROR_ALREADY_EXISTS; + } + + if (size == 0) { + FileUtil::CreateEmptyFile(full_path); + return RESULT_SUCCESS; + } + + FileUtil::IOFile file(full_path, "wb"); + // Creates a sparse file (or a normal file on filesystems without the concept of sparse files) + // We do this by seeking to the right size, then writing a single null byte. + if (file.Seek(size - 1, SEEK_SET) && file.WriteBytes("", 1) == 1) { + return RESULT_SUCCESS; + } + + LOG_ERROR(Service_FS, "Too large file"); + return ResultCode(ErrorDescription::TooLarge, ErrorModule::FS, ErrorSummary::OutOfResource, + ErrorLevel::Info); +} + +ResultCode SDMCArchive::CreateDirectory(const Path& path) const { + const PathParser path_parser(path); + + if (!path_parser.IsValid()) { + LOG_ERROR(Service_FS, "Invalid path %s", path.DebugStr().c_str()); + return ERROR_INVALID_PATH; + } + + const auto full_path = path_parser.BuildHostPath(mount_point); + + switch (path_parser.GetHostStatus(mount_point)) { + case PathParser::InvalidMountPoint: + LOG_CRITICAL(Service_FS, "(unreachable) Invalid mount point %s", mount_point.c_str()); + return ERROR_NOT_FOUND; + case PathParser::PathNotFound: + case PathParser::FileInPath: + LOG_ERROR(Service_FS, "Path not found %s", full_path.c_str()); + return ERROR_NOT_FOUND; + case PathParser::DirectoryFound: + case PathParser::FileFound: + LOG_ERROR(Service_FS, "%s already exists", full_path.c_str()); + return ERROR_ALREADY_EXISTS; + } + + if (FileUtil::CreateDir(mount_point + path.AsString())) { + return RESULT_SUCCESS; + } + + LOG_CRITICAL(Service_FS, "(unreachable) Unknown error creating %s", mount_point.c_str()); + return ResultCode(ErrorDescription::NoData, ErrorModule::FS, ErrorSummary::Canceled, + ErrorLevel::Status); +} + +ResultCode SDMCArchive::RenameDirectory(const Path& src_path, const Path& dest_path) const { + if (FileUtil::Rename(mount_point + src_path.AsString(), mount_point + dest_path.AsString())) + return RESULT_SUCCESS; + + // TODO(yuriks): This code probably isn't right, it'll return a Status even if the file didn't + // exist or similar. Verify. + return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description + ErrorSummary::NothingHappened, ErrorLevel::Status); +} + +ResultVal> SDMCArchive::OpenDirectory(const Path& path) const { + const PathParser path_parser(path); + + if (!path_parser.IsValid()) { + LOG_ERROR(Service_FS, "Invalid path %s", path.DebugStr().c_str()); + return ERROR_INVALID_PATH; + } + + const auto full_path = path_parser.BuildHostPath(mount_point); + + switch (path_parser.GetHostStatus(mount_point)) { + case PathParser::InvalidMountPoint: + LOG_CRITICAL(Service_FS, "(unreachable) Invalid mount point %s", mount_point.c_str()); + return ERROR_NOT_FOUND; + case PathParser::PathNotFound: + case PathParser::NotFound: + case PathParser::FileFound: + LOG_ERROR(Service_FS, "%s not found", full_path.c_str()); + return ERROR_NOT_FOUND; + case PathParser::FileInPath: + LOG_ERROR(Service_FS, "Unexpected file in path %s", full_path.c_str()); + return ERROR_UNEXPECTED_FILE_OR_DIRECTORY_SDMC; + } + + auto directory = std::make_unique(full_path); + return MakeResult>(std::move(directory)); +} + +u64 SDMCArchive::GetFreeBytes() const { + // TODO: Stubbed to return 1GiB + return 1024 * 1024 * 1024; +} + ArchiveFactory_SDMC::ArchiveFactory_SDMC(const std::string& sdmc_directory) : sdmc_directory(sdmc_directory) { LOG_INFO(Service_FS, "Directory %s set as SDMC.", sdmc_directory.c_str()); @@ -35,7 +301,7 @@ bool ArchiveFactory_SDMC::Initialize() { } ResultVal> ArchiveFactory_SDMC::Open(const Path& path) { - auto archive = std::make_unique(sdmc_directory); + auto archive = std::make_unique(sdmc_directory); return MakeResult>(std::move(archive)); } diff --git a/src/core/file_sys/archive_sdmc.h b/src/core/file_sys/archive_sdmc.h index 88e855351d..4fa47ff35b 100644 --- a/src/core/file_sys/archive_sdmc.h +++ b/src/core/file_sys/archive_sdmc.h @@ -14,6 +14,31 @@ namespace FileSys { +/// Archive backend for SDMC archive +class SDMCArchive : public ArchiveBackend { +public: + SDMCArchive(const std::string& mount_point_) : mount_point(mount_point_) {} + + std::string GetName() const override { + return "SDMCArchive: " + mount_point; + } + + ResultVal> OpenFile(const Path& path, + const Mode& mode) const override; + ResultCode DeleteFile(const Path& path) const override; + ResultCode RenameFile(const Path& src_path, const Path& dest_path) const override; + ResultCode DeleteDirectory(const Path& path) const override; + ResultCode DeleteDirectoryRecursively(const Path& path) const override; + ResultCode CreateFile(const Path& path, u64 size) const override; + ResultCode CreateDirectory(const Path& path) const override; + ResultCode RenameDirectory(const Path& src_path, const Path& dest_path) const override; + ResultVal> OpenDirectory(const Path& path) const override; + u64 GetFreeBytes() const override; + +protected: + std::string mount_point; +}; + /// File system interface to the SDMC archive class ArchiveFactory_SDMC final : public ArchiveFactory { public: diff --git a/src/core/file_sys/errors.h b/src/core/file_sys/errors.h index da7e826423..f9299364c7 100644 --- a/src/core/file_sys/errors.h +++ b/src/core/file_sys/errors.h @@ -11,18 +11,27 @@ const ResultCode ERROR_INVALID_PATH(ErrorDescription::FS_InvalidPath, ErrorModul const ResultCode ERROR_UNSUPPORTED_OPEN_FLAGS(ErrorDescription::FS_UnsupportedOpenFlags, ErrorModule::FS, ErrorSummary::NotSupported, ErrorLevel::Usage); +const ResultCode ERROR_INVALID_OPEN_FLAGS(ErrorDescription::FS_InvalidOpenFlags, ErrorModule::FS, + ErrorSummary::Canceled, ErrorLevel::Status); const ResultCode ERROR_FILE_NOT_FOUND(ErrorDescription::FS_FileNotFound, ErrorModule::FS, ErrorSummary::NotFound, ErrorLevel::Status); const ResultCode ERROR_PATH_NOT_FOUND(ErrorDescription::FS_PathNotFound, ErrorModule::FS, ErrorSummary::NotFound, ErrorLevel::Status); +const ResultCode ERROR_NOT_FOUND(ErrorDescription::FS_NotFound, ErrorModule::FS, + ErrorSummary::NotFound, ErrorLevel::Status); const ResultCode ERROR_UNEXPECTED_FILE_OR_DIRECTORY(ErrorDescription::FS_UnexpectedFileOrDirectory, ErrorModule::FS, ErrorSummary::NotSupported, ErrorLevel::Usage); +const ResultCode ERROR_UNEXPECTED_FILE_OR_DIRECTORY_SDMC(ErrorDescription::FS_NotAFile, + ErrorModule::FS, ErrorSummary::Canceled, + ErrorLevel::Status); const ResultCode ERROR_DIRECTORY_ALREADY_EXISTS(ErrorDescription::FS_DirectoryAlreadyExists, ErrorModule::FS, ErrorSummary::NothingHappened, ErrorLevel::Status); const ResultCode ERROR_FILE_ALREADY_EXISTS(ErrorDescription::FS_FileAlreadyExists, ErrorModule::FS, ErrorSummary::NothingHappened, ErrorLevel::Status); +const ResultCode ERROR_ALREADY_EXISTS(ErrorDescription::FS_AlreadyExists, ErrorModule::FS, + ErrorSummary::NothingHappened, ErrorLevel::Status); const ResultCode ERROR_DIRECTORY_NOT_EMPTY(ErrorDescription::FS_DirectoryNotEmpty, ErrorModule::FS, ErrorSummary::Canceled, ErrorLevel::Status);