1 //===- llvm/BinaryFormat/Magic.h - File magic identification ----*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_BINARYFORMAT_MAGIC_H 10 #define LLVM_BINARYFORMAT_MAGIC_H 11 12 #include <system_error> 13 14 namespace llvm { 15 class StringRef; 16 class Twine; 17 18 /// file_magic - An "enum class" enumeration of file types based on magic (the 19 /// first N bytes of the file). 20 struct file_magic { 21 enum Impl { 22 unknown = 0, ///< Unrecognized file 23 bitcode, ///< Bitcode file 24 archive, ///< ar style archive file 25 elf, ///< ELF Unknown type 26 elf_relocatable, ///< ELF Relocatable object file 27 elf_executable, ///< ELF Executable image 28 elf_shared_object, ///< ELF dynamically linked shared lib 29 elf_core, ///< ELF core image 30 macho_object, ///< Mach-O Object file 31 macho_executable, ///< Mach-O Executable 32 macho_fixed_virtual_memory_shared_lib, ///< Mach-O Shared Lib, FVM 33 macho_core, ///< Mach-O Core File 34 macho_preload_executable, ///< Mach-O Preloaded Executable 35 macho_dynamically_linked_shared_lib, ///< Mach-O dynlinked shared lib 36 macho_dynamic_linker, ///< The Mach-O dynamic linker 37 macho_bundle, ///< Mach-O Bundle file 38 macho_dynamically_linked_shared_lib_stub, ///< Mach-O Shared lib stub 39 macho_dsym_companion, ///< Mach-O dSYM companion file 40 macho_kext_bundle, ///< Mach-O kext bundle file 41 macho_universal_binary, ///< Mach-O universal binary 42 minidump, ///< Windows minidump file 43 coff_cl_gl_object, ///< Microsoft cl.exe's intermediate code file 44 coff_object, ///< COFF object file 45 coff_import_library, ///< COFF import library 46 pecoff_executable, ///< PECOFF executable file 47 windows_resource, ///< Windows compiled resource file (.res) 48 xcoff_object_32, ///< 32-bit XCOFF object file 49 xcoff_object_64, ///< 64-bit XCOFF object file 50 wasm_object, ///< WebAssembly Object file 51 pdb, ///< Windows PDB debug info file 52 tapi_file, ///< Text-based Dynamic Library Stub file 53 }; 54 is_objectfile_magic55 bool is_object() const { return V != unknown; } 56 57 file_magic() = default; file_magicfile_magic58 file_magic(Impl V) : V(V) {} Implfile_magic59 operator Impl() const { return V; } 60 61 private: 62 Impl V = unknown; 63 }; 64 65 /// Identify the type of a binary file based on how magical it is. 66 file_magic identify_magic(StringRef magic); 67 68 /// Get and identify \a path's type based on its content. 69 /// 70 /// @param path Input path. 71 /// @param result Set to the type of file, or file_magic::unknown. 72 /// @returns errc::success if result has been successfully set, otherwise a 73 /// platform-specific error_code. 74 std::error_code identify_magic(const Twine &path, file_magic &result); 75 } // namespace llvm 76 77 #endif 78