mirror of
https://github.com/ARMSX2/ARMSX2.git
synced 2026-08-24 16:50:16 -07:00
jpolo1224
07d03a5eac
Two fixes that both live in the JNI layer. Folder memory cards on a user-chosen data folder crashed on the first new save. FUSE-backed shared storage denies libc file CREATION even though mkdir is already routed through Java, so SaveYAMLToFile opened a not-yet-existing _pcsx2_index with an unchecked OpenCFile and then dereferenced null. Existing saves reuse that file, which is exactly why only new saves crashed. Null-check the write, and add a CreateFileViaJava fallback in OpenCFile so a denied create is retried through the Java file API - the same libc/Java asymmetry that CreateDirectoryPath already relies on. Patch and cheat enable-state was written to the base settings layer, keyed only by patch name, so enabling e.g. "Widescreen 16:9" for one game switched on the identically named patch in every other game. LayeredSettingsInterface returns the first non-empty layer with the game layer ahead of the base one, so upstream keys this per serial and CRC; do the same, and strip the migrated names from the base list so an empty per-game list cannot fall back through to it. The per-game INI exporter also rebuilt the file from scratch, dropping every key it does not own - the patch lists above, and per-game MemoryCards and Gamefixes overrides. Load the existing file and clear only the sections the exporter actually writes.
237 lines
8.5 KiB
C++
237 lines
8.5 KiB
C++
// SPDX-FileCopyrightText: 2002-2026 PCSX2 Dev Team
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// SPDX-License-Identifier: GPL-3.0+
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#pragma once
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#include "Pcsx2Defs.h"
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#include <cstdio>
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#include <ctime>
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#include <memory>
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#include <optional>
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#include <span>
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#include <string>
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#include <vector>
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#include <sys/stat.h>
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class Error;
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class ProgressCallback;
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#ifdef _WIN32
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#define FS_OSPATH_SEPARATOR_CHARACTER '\\'
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#define FS_OSPATH_SEPARATOR_STR "\\"
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#else
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#define FS_OSPATH_SEPARATOR_CHARACTER '/'
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#define FS_OSPATH_SEPARATOR_STR "/"
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#endif
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enum FILESYSTEM_FILE_ATTRIBUTES
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{
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FILESYSTEM_FILE_ATTRIBUTE_DIRECTORY = 1,
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FILESYSTEM_FILE_ATTRIBUTE_READ_ONLY = 2,
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FILESYSTEM_FILE_ATTRIBUTE_COMPRESSED = 4,
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};
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enum FILESYSTEM_FIND_FLAGS
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{
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FILESYSTEM_FIND_RECURSIVE = (1 << 0),
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FILESYSTEM_FIND_RELATIVE_PATHS = (1 << 1),
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FILESYSTEM_FIND_HIDDEN_FILES = (1 << 2),
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FILESYSTEM_FIND_FOLDERS = (1 << 3),
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FILESYSTEM_FIND_FILES = (1 << 4),
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FILESYSTEM_FIND_KEEP_ARRAY = (1 << 5),
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FILESYSTEM_FIND_SORT_BY_NAME = (1 << 6),
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};
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struct FILESYSTEM_STAT_DATA
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{
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std::time_t CreationTime; // actually inode change time on linux
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std::time_t ModificationTime;
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s64 Size;
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u32 Attributes;
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};
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struct FILESYSTEM_FIND_DATA
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{
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std::time_t CreationTime; // actually inode change time on linux
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std::time_t ModificationTime;
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std::string FileName;
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s64 Size;
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u32 Attributes;
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};
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namespace FileSystem
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{
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using FindResultsArray = std::vector<FILESYSTEM_FIND_DATA>;
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/// Returns a list of "root directories" (i.e. root/home directories on Linux, drive letters on Windows).
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std::vector<std::string> GetRootDirectoryList();
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/// Search for files
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bool FindFiles(const char* path, const char* pattern, u32 flags, FindResultsArray* results, ProgressCallback* cancel = nullptr);
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/// Stat file
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bool StatFile(const char* path, struct stat* st);
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bool StatFile(std::FILE* fp, struct stat* st);
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bool StatFile(const char* path, FILESYSTEM_STAT_DATA* pStatData);
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bool StatFile(std::FILE* fp, FILESYSTEM_STAT_DATA* pStatData);
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s64 GetPathFileSize(const char* path);
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/// Returns the last modified timestamp for a file.
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std::optional<std::time_t> GetFileTimestamp(const char* path);
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/// File exists?
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bool FileExists(const char* path);
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/// Directory exists?
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bool DirectoryExists(const char* path);
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/// Directory does not contain any files?
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bool DirectoryIsEmpty(const char* path);
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/// Delete file
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bool DeleteFilePath(const char* path, Error* error = nullptr);
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/// Rename file
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bool RenamePath(const char* OldPath, const char* NewPath, Error* error = nullptr);
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/// Deleter functor for managed file pointers
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struct FileDeleter
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{
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void operator()(std::FILE* fp)
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{
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std::fclose(fp);
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}
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};
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/// open files
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using ManagedCFilePtr = std::unique_ptr<std::FILE, FileDeleter>;
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ManagedCFilePtr OpenManagedCFile(const char* filename, const char* mode, Error* error = nullptr);
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// Tries to open a file using the given filename, but if that fails searches
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// the directory for a file with a case-insensitive match.
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// This is the same as OpenManagedCFile on Windows and MacOS
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ManagedCFilePtr OpenManagedCFileTryIgnoreCase(const char* filename, const char* mode, Error* error = nullptr);
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std::FILE* OpenCFile(const char* filename, const char* mode, Error* error = nullptr);
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// Tries to open a file using the given filename, but if that fails searches
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// the directory for a file with a case-insensitive match.
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// This is the same as OpenCFile on Windows and MacOS
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std::FILE* OpenCFileTryIgnoreCase(const char* filename, const char* mode, Error* error = nullptr);
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int FSeek64(std::FILE* fp, s64 offset, int whence);
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s64 FTell64(std::FILE* fp);
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s64 FSize64(std::FILE* fp);
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int OpenFDFile(const char* filename, int flags, int mode, Error* error = nullptr);
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#if defined(__ANDROID__)
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/// Open a content:// URI (passed through from the Java SAF layer) and return
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/// its raw fd. Defined in the Android JNI layer (native-lib.cpp).
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int OpenFDFileContent(const char* filename);
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/// Create a directory tree via the Java File API (NativeApp.createDirectoryPath).
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/// Fallback for when libc mkdir() is denied on FUSE-emulated external storage
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/// (user-picked custom data folders) despite all-files access. Returns true if
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/// the directory exists afterwards.
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bool CreateDirectoryViaJava(const char* path);
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/// Create an empty file via the Java File API (NativeApp.createFilePath).
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/// Fallback for when libc fopen(O_CREAT) is denied on FUSE-emulated external
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/// storage (user-picked custom data folders) despite all-files access; once the
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/// file exists the native truncating write that follows succeeds. Makes NEW
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/// folder-card saves work on a custom data folder. Returns true if it exists after.
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bool CreateFileViaJava(const char* path);
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#endif
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/// Sharing modes for OpenSharedCFile().
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enum class FileShareMode
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{
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DenyReadWrite, /// Exclusive access.
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DenyWrite, /// Other processes can read from this file.
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DenyRead, /// Other processes can write to this file.
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DenyNone, /// Other processes can read and write to this file.
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};
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/// Opens a file in shareable mode (where other processes can access it concurrently).
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/// Only has an effect on Windows systems.
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ManagedCFilePtr OpenManagedSharedCFile(const char* filename, const char* mode, FileShareMode share_mode, Error* error = nullptr);
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std::FILE* OpenSharedCFile(const char* filename, const char* mode, FileShareMode share_mode, Error* error = nullptr);
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std::optional<std::vector<u8>> ReadBinaryFile(const char* filename);
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std::optional<std::vector<u8>> ReadBinaryFile(std::FILE* fp);
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std::optional<std::string> ReadFileToString(const char* filename);
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std::optional<std::string> ReadFileToString(std::FILE* fp);
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bool WriteBinaryFile(const char* filename, const void* data, size_t data_length);
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bool WriteStringToFile(const char* filename, const std::string_view sv);
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size_t ReadFileWithProgress(std::FILE* fp, void* dst, size_t length, ProgressCallback* progress,
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Error* error = nullptr, size_t chunk_size = 16 * 1024 * 1024);
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size_t ReadFileWithPartialProgress(std::FILE* fp, void* dst, size_t length, ProgressCallback* progress,
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int startPercent, int endPercent, Error* error = nullptr, size_t chunk_size = 16 * 1024 * 1024);
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std::span<const u8> MapBinaryFileForRead(const char* filename);
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std::span<const u8> MapBinaryFileForRead(std::FILE* fp);
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void UnmapFile(std::span<const u8> file);
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/// creates a directory in the local filesystem
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/// if the directory already exists, the return value will be true.
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/// if Recursive is specified, all parent directories will be created
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/// if they do not exist.
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bool CreateDirectoryPath(const char* path, bool recursive, Error* error = nullptr);
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/// Creates a directory if it doesn't already exist.
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/// Returns false if it does not exist and creation failed.
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bool EnsureDirectoryExists(const char* path, bool recursive, Error* error = nullptr);
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/// Removes a directory.
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bool DeleteDirectory(const char* path);
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/// Recursively removes a directory and all subdirectories/files.
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bool RecursiveDeleteDirectory(const char* path);
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/// Copies one file to another, optionally replacing it if it already exists.
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bool CopyFilePath(const char* source, const char* destination, bool replace);
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/// Returns the path to the current package (AppImage).
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std::string GetPackagePath();
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/// Returns the path to the current executable.
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std::string GetProgramPath();
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/// Retrieves the current working directory.
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std::string GetWorkingDirectory();
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/// Sets the current working directory. Returns true if successful.
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bool SetWorkingDirectory(const char* path);
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/// Enables/disables NTFS compression on a file or directory.
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/// Does not apply the compression flag recursively if called for a directory.
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/// Does nothing and returns false on non-Windows platforms.
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bool SetPathCompression(const char* path, bool enable);
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// Creates a symbolic link. Note that on Windows this requires elevated
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// privileges so this is mostly useful for testing purposes.
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bool CreateSymLink(const char* link, const char* target);
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/// Checks if a file or directory is a symbolic link.
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bool IsSymbolicLink(const char* path);
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/// Deletes a symbolic link (either a file or directory).
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bool DeleteSymbolicLink(const char* path, Error* error = nullptr);
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#ifdef _WIN32
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// Path limit remover, but also converts to a wide string at the same time.
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bool GetWin32Path(std::wstring* dest, std::string_view str);
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std::wstring GetWin32Path(std::string_view str);
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#endif
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/// Abstracts a POSIX file lock.
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#ifndef _WIN32
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class POSIXLock
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{
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public:
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POSIXLock(int fd);
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POSIXLock(std::FILE* fp);
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~POSIXLock();
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private:
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int m_fd;
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};
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#endif
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}; // namespace FileSystem
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