From ea9ce0fba776eef8f9e4f3a86e71256091732a14 Mon Sep 17 00:00:00 2001 From: Subv Date: Tue, 16 Dec 2014 00:33:41 -0500 Subject: Filesystem/Archives: Implemented the SaveData archive The savedata for each game is stored in /savedata/ for NCCH files. ELF files and 3DSX files use the folder 0 because they have no ID information Got rid of the code duplication in File and Directory Files that deal with the host machine's file system now live in DiskFile, similarly for directories and DiskDirectory and archives with DiskArchive. FS_U: Use the correct error code when a file wasn't found --- src/core/file_sys/disk_archive.cpp | 167 +++++++++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 src/core/file_sys/disk_archive.cpp (limited to 'src/core/file_sys/disk_archive.cpp') diff --git a/src/core/file_sys/disk_archive.cpp b/src/core/file_sys/disk_archive.cpp new file mode 100644 index 000000000..eabf58057 --- /dev/null +++ b/src/core/file_sys/disk_archive.cpp @@ -0,0 +1,167 @@ +// Copyright 2014 Citra Emulator Project +// Licensed under GPLv2 +// Refer to the license.txt file included. + +#include + +#include "common/common_types.h" +#include "common/file_util.h" + +#include "core/file_sys/disk_archive.h" +#include "core/settings.h" + +//////////////////////////////////////////////////////////////////////////////////////////////////// +// FileSys namespace + +namespace FileSys { + +std::unique_ptr DiskArchive::OpenFile(const Path& path, const Mode mode) const { + LOG_DEBUG(Service_FS, "called path=%s mode=%01X", path.DebugStr().c_str(), mode.hex); + DiskFile* file = new DiskFile(this, path, mode); + if (!file->Open()) + return nullptr; + return std::unique_ptr(file); +} + +bool DiskArchive::DeleteFile(const FileSys::Path& path) const { + return FileUtil::Delete(GetMountPoint() + path.AsString()); +} + +bool DiskArchive::RenameFile(const FileSys::Path& src_path, const FileSys::Path& dest_path) const { + return FileUtil::Rename(GetMountPoint() + src_path.AsString(), GetMountPoint() + dest_path.AsString()); +} + +bool DiskArchive::DeleteDirectory(const FileSys::Path& path) const { + return FileUtil::DeleteDir(GetMountPoint() + path.AsString()); +} + +bool DiskArchive::CreateDirectory(const Path& path) const { + return FileUtil::CreateDir(GetMountPoint() + path.AsString()); +} + +bool DiskArchive::RenameDirectory(const FileSys::Path& src_path, const FileSys::Path& dest_path) const { + return FileUtil::Rename(GetMountPoint() + src_path.AsString(), GetMountPoint() + dest_path.AsString()); +} + +std::unique_ptr DiskArchive::OpenDirectory(const Path& path) const { + LOG_DEBUG(Service_FS, "called path=%s", path.DebugStr().c_str()); + DiskDirectory* directory = new DiskDirectory(this, path); + if (!directory->Open()) + return nullptr; + return std::unique_ptr(directory); +} + +//////////////////////////////////////////////////////////////////////////////////////////////////// + +DiskFile::DiskFile(const DiskArchive* archive, const Path& path, const Mode mode) { + // TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass + // the root directory we set while opening the archive. + // For example, opening /../../etc/passwd can give the emulated program your users list. + this->path = archive->GetMountPoint() + path.AsString(); + this->mode.hex = mode.hex; + this->archive = archive; +} + +bool DiskFile::Open() { + if (!mode.create_flag && !FileUtil::Exists(path)) { + LOG_ERROR(Service_FS, "Non-existing file %s can’t be open without mode create.", path.c_str()); + return false; + } + + std::string mode_string; + if (mode.create_flag) + mode_string = "w+"; + else if (mode.write_flag) + mode_string = "r+"; // Files opened with Write access can be read from + else if (mode.read_flag) + mode_string = "r"; + + // Open the file in binary mode, to avoid problems with CR/LF on Windows systems + mode_string += "b"; + + file = new FileUtil::IOFile(path, mode_string.c_str()); + return true; +} + +size_t DiskFile::Read(const u64 offset, const u32 length, u8* buffer) const { + file->Seek(offset, SEEK_SET); + return file->ReadBytes(buffer, length); +} + +size_t DiskFile::Write(const u64 offset, const u32 length, const u32 flush, const u8* buffer) const { + file->Seek(offset, SEEK_SET); + size_t written = file->WriteBytes(buffer, length); + if (flush) + file->Flush(); + return written; +} + +size_t DiskFile::GetSize() const { + return static_cast(file->GetSize()); +} + +bool DiskFile::SetSize(const u64 size) const { + file->Resize(size); + file->Flush(); + return true; +} + +bool DiskFile::Close() const { + return file->Close(); +} + +//////////////////////////////////////////////////////////////////////////////////////////////////// + +DiskDirectory::DiskDirectory(const DiskArchive* archive, const Path& path) { + // TODO(Link Mauve): normalize path into an absolute path without "..", it can currently bypass + // the root directory we set while opening the archive. + // For example, opening /../../usr/bin can give the emulated program your installed programs. + this->path = archive->GetMountPoint() + path.AsString(); + this->archive = archive; +} + +bool DiskDirectory::Open() { + if (!FileUtil::IsDirectory(path)) + return false; + FileUtil::ScanDirectoryTree(path, directory); + children_iterator = directory.children.begin(); + return true; +} + +u32 DiskDirectory::Read(const u32 count, Entry* entries) { + u32 entries_read = 0; + + while (entries_read < count && children_iterator != directory.children.cend()) { + const FileUtil::FSTEntry& file = *children_iterator; + const std::string& filename = file.virtualName; + Entry& entry = entries[entries_read]; + + LOG_TRACE(Service_FS, "File %s: size=%llu dir=%d", filename.c_str(), file.size, file.isDirectory); + + // TODO(Link Mauve): use a proper conversion to UTF-16. + for (size_t j = 0; j < FILENAME_LENGTH; ++j) { + entry.filename[j] = filename[j]; + if (!filename[j]) + break; + } + + FileUtil::SplitFilename83(filename, entry.short_name, entry.extension); + + entry.is_directory = file.isDirectory; + entry.is_hidden = (filename[0] == '.'); + entry.is_read_only = 0; + entry.file_size = file.size; + + // We emulate a SD card where the archive bit has never been cleared, as it would be on + // most user SD cards. + // Some homebrews (blargSNES for instance) are known to mistakenly use the archive bit as a + // file bit. + entry.is_archive = !file.isDirectory; + + ++entries_read; + ++children_iterator; + } + return entries_read; +} + +} // namespace FileSys -- cgit v1.2.3 From ebfd831ccba32bce097491db3d6bdff0be05935e Mon Sep 17 00:00:00 2001 From: purpasmart96 Date: Tue, 16 Dec 2014 21:38:14 -0800 Subject: License change --- src/core/file_sys/disk_archive.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/core/file_sys/disk_archive.cpp') diff --git a/src/core/file_sys/disk_archive.cpp b/src/core/file_sys/disk_archive.cpp index eabf58057..fc9ee4acf 100644 --- a/src/core/file_sys/disk_archive.cpp +++ b/src/core/file_sys/disk_archive.cpp @@ -1,5 +1,5 @@ // Copyright 2014 Citra Emulator Project -// Licensed under GPLv2 +// Licensed under GPLv2 or any later version // Refer to the license.txt file included. #include -- cgit v1.2.3 From 0625dd09eaf9158696a9255cb6c6b2bd73122301 Mon Sep 17 00:00:00 2001 From: archshift Date: Sat, 20 Dec 2014 12:43:50 -0300 Subject: Added CreateFile to the FS_USER service Tested with hwtests. --- src/core/file_sys/disk_archive.cpp | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'src/core/file_sys/disk_archive.cpp') diff --git a/src/core/file_sys/disk_archive.cpp b/src/core/file_sys/disk_archive.cpp index eabf58057..f8096ebcf 100644 --- a/src/core/file_sys/disk_archive.cpp +++ b/src/core/file_sys/disk_archive.cpp @@ -35,6 +35,27 @@ bool DiskArchive::DeleteDirectory(const FileSys::Path& path) const { return FileUtil::DeleteDir(GetMountPoint() + path.AsString()); } +ResultCode DiskArchive::CreateFile(const FileSys::Path& path, u32 size) const { + std::string full_path = GetMountPoint() + path.AsString(); + + if (FileUtil::Exists(full_path)) + return ResultCode(ErrorDescription::AlreadyExists, ErrorModule::FS, ErrorSummary::NothingHappened, ErrorLevel::Info); + + 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; + + return ResultCode(ErrorDescription::TooLarge, ErrorModule::FS, ErrorSummary::OutOfResource, ErrorLevel::Info); +} + + bool DiskArchive::CreateDirectory(const Path& path) const { return FileUtil::CreateDir(GetMountPoint() + path.AsString()); } -- cgit v1.2.3 From bbe0bf133252c75ce2485aebc6eb5a7c497fe5ad Mon Sep 17 00:00:00 2001 From: Emmanuel Gil Peyrot Date: Thu, 18 Dec 2014 14:06:37 +0000 Subject: FileSys: Clean up according to the coding style, and remove redundant namespaced names. --- src/core/file_sys/disk_archive.cpp | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'src/core/file_sys/disk_archive.cpp') diff --git a/src/core/file_sys/disk_archive.cpp b/src/core/file_sys/disk_archive.cpp index 1689a1a91..0197f727d 100644 --- a/src/core/file_sys/disk_archive.cpp +++ b/src/core/file_sys/disk_archive.cpp @@ -23,15 +23,15 @@ std::unique_ptr DiskArchive::OpenFile(const Path& path, const Mode return std::unique_ptr(file); } -bool DiskArchive::DeleteFile(const FileSys::Path& path) const { +bool DiskArchive::DeleteFile(const Path& path) const { return FileUtil::Delete(GetMountPoint() + path.AsString()); } -bool DiskArchive::RenameFile(const FileSys::Path& src_path, const FileSys::Path& dest_path) const { +bool DiskArchive::RenameFile(const Path& src_path, const Path& dest_path) const { return FileUtil::Rename(GetMountPoint() + src_path.AsString(), GetMountPoint() + dest_path.AsString()); } -bool DiskArchive::DeleteDirectory(const FileSys::Path& path) const { +bool DiskArchive::DeleteDirectory(const Path& path) const { return FileUtil::DeleteDir(GetMountPoint() + path.AsString()); } @@ -60,7 +60,7 @@ bool DiskArchive::CreateDirectory(const Path& path) const { return FileUtil::CreateDir(GetMountPoint() + path.AsString()); } -bool DiskArchive::RenameDirectory(const FileSys::Path& src_path, const FileSys::Path& dest_path) const { +bool DiskArchive::RenameDirectory(const Path& src_path, const Path& dest_path) const { return FileUtil::Rename(GetMountPoint() + src_path.AsString(), GetMountPoint() + dest_path.AsString()); } @@ -85,7 +85,7 @@ DiskFile::DiskFile(const DiskArchive* archive, const Path& path, const Mode mode bool DiskFile::Open() { if (!mode.create_flag && !FileUtil::Exists(path)) { - LOG_ERROR(Service_FS, "Non-existing file %s can’t be open without mode create.", path.c_str()); + LOG_ERROR(Service_FS, "Non-existing file %s can't be open without mode create.", path.c_str()); return false; } -- cgit v1.2.3