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https://github.com/FEX-Emu/FEX.git
synced 2026-10-08 19:00:18 +02:00
Ryan Houdek
185f265f5c
This adds a new `ThunksDB.json` file to the config folder.
This file lets users describe thunks in a meaningful way without
duplicating it amongst multiple configuration files.
eg:
```
{
"DB": {
"GL": {
"Library" : "libGL-guest.so",
"Depends": [
"X11"
],
"Overlay": [
"/usr/lib/x86_64-linux-gnu/libGL.so",
"/usr/lib/x86_64-linux-gnu/libGL.so.1",
"/usr/lib/x86_64-linux-gnu/libGL.so.1.2.0",
"/usr/lib/x86_64-linux-gnu/libGL.so.1.7.0",
"/lib/x86_64-linux-gnu/libGL.so",
"/lib/x86_64-linux-gnu/libGL.so.1",
"/lib/x86_64-linux-gnu/libGL.so.1.2.0",
"/lib/x86_64-linux-gnu/libGL.so.1.7.0"
]
},
"X11": {
"Library": "libX11-guest.so",
"Overlay": [
"/usr/lib/x86_64-linux-gnu/libX11.so.6",
"/lib/x86_64-linux-gnu/libX11.so.6"
]
}
}
}
```
This file lets the user describe the library with an nicer name, in this instance
`GL` instead of `libGL-guest.so`.
It also tracks depedencies, like how GL currently has a hard dependency on X11.
This allows the loader to automatically enable the dependencies if described.
The `Overlays` array is like the regular Thunks config file but now in this DB file.
With the DB file now describing the libraries, this allows us to then stick a lighter
description inside of the Thunk Config file.
```
{
"ThunksDB": {
"GL": 1
}
}
```
With this example Thunk config file (Which can be configured per application), There is
a new property of name `ThunksDB`.
All this takes is key:value pairs which describe the user friendly library name and an Integer
to state if the thunk should be enabled or not.
This allows very quick toggling of thunks directly inside of the configuration files rather than
breaking the configuration to disable it.
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
/*
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$info$
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tags: LinuxSyscalls|common
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$end_info$
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*/
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#pragma once
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#include <FEXCore/Config/Config.h>
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#include <cstdint>
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#include <functional>
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#include <map>
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#include <mutex>
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#include <optional>
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#include <stddef.h>
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#include <string>
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#include <sys/stat.h>
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#include <unordered_map>
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#include <unordered_set>
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#include "Tests/LinuxSyscalls/EmulatedFiles/EmulatedFiles.h"
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namespace FEXCore::Context {
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struct Context;
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}
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namespace FEX::HLE {
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struct open_how;
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class FileManager final {
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public:
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FileManager() = delete;
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FileManager(FileManager &&) = delete;
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FileManager(FEXCore::Context::Context *ctx);
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~FileManager();
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uint64_t Open(const char *pathname, int flags, uint32_t mode);
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uint64_t Close(int fd);
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uint64_t CloseRange(unsigned int first, unsigned int last, unsigned int flags);
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uint64_t Stat(const char *pathname, void *buf);
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uint64_t Lstat(const char *path, void *buf);
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uint64_t Access(const char *pathname, int mode);
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uint64_t FAccessat(int dirfd, const char *pathname, int mode);
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uint64_t FAccessat2(int dirfd, const char *pathname, int mode, int flags);
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uint64_t Readlink(const char *pathname, char *buf, size_t bufsiz);
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uint64_t Chmod(const char *pathname, mode_t mode);
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uint64_t Readlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz);
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uint64_t Openat(int dirfs, const char *pathname, int flags, uint32_t mode);
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uint64_t Openat2(int dirfs, const char *pathname, FEX::HLE::open_how *how, size_t usize);
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uint64_t Statx(int dirfd, const char *pathname, int flags, uint32_t mask, struct statx *statxbuf);
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uint64_t Mknod(const char *pathname, mode_t mode, dev_t dev);
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uint64_t NewFSStatAt(int dirfd, const char *pathname, struct stat *buf, int flag);
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uint64_t NewFSStatAt64(int dirfd, const char *pathname, struct stat64 *buf, int flag);
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// vfs
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uint64_t Statfs(const char *path, void *buf);
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std::string *FindFDName(int fd);
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std::optional<std::string> GetSelf(const char *Pathname);
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void UpdatePID(uint32_t PID) { CurrentPID = PID; }
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private:
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FEX::EmulatedFile::EmulatedFDManager EmuFD;
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std::mutex FDLock;
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std::unordered_map<int32_t, std::string> FDToNameMap;
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std::string GetEmulatedPath(const char *pathname, bool FollowSymlink = false);
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std::map<std::string, std::string, std::less<>> ThunkOverlays;
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FEX_CONFIG_OPT(Filename, APP_FILENAME);
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FEX_CONFIG_OPT(LDPath, ROOTFS);
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FEX_CONFIG_OPT(ThunkHostLibs, THUNKHOSTLIBS);
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FEX_CONFIG_OPT(ThunkGuestLibs, THUNKGUESTLIBS);
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FEX_CONFIG_OPT(ThunkConfig, THUNKCONFIG);
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uint32_t CurrentPID{};
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void LoadThunkDatabase(bool Global);
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struct ThunkDBObject {
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std::string LibraryName;
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std::unordered_set<std::string> Depends;
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std::vector<std::string> Overlays;
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bool Enabled{};
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};
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std::unordered_map<std::string, ThunkDBObject> ThunkDB{};
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};
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}
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