1 //===-- flags.cpp -----------------------------------------------*- 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 #include "flags.h" 10 #include "common.h" 11 #include "flags_parser.h" 12 13 #include "scudo/interface.h" 14 15 namespace scudo { 16 17 Flags *getFlags() { 18 static Flags F; 19 return &F; 20 } 21 22 void Flags::setDefaults() { 23 #define SCUDO_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue; 24 #include "flags.inc" 25 #undef SCUDO_FLAG 26 27 #ifdef GWP_ASAN_HOOKS 28 #define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description) \ 29 GWP_ASAN_##Name = DefaultValue; 30 #include "gwp_asan/options.inc" 31 #undef GWP_ASAN_OPTION 32 #endif // GWP_ASAN_HOOKS 33 } 34 35 void registerFlags(FlagParser *Parser, Flags *F) { 36 #define SCUDO_FLAG(Type, Name, DefaultValue, Description) \ 37 Parser->registerFlag(#Name, Description, FlagType::FT_##Type, \ 38 reinterpret_cast<void *>(&F->Name)); 39 #include "flags.inc" 40 #undef SCUDO_FLAG 41 42 #ifdef GWP_ASAN_HOOKS 43 #define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description) \ 44 Parser->registerFlag("GWP_ASAN_" #Name, Description, FlagType::FT_##Type, \ 45 reinterpret_cast<void *>(&F->GWP_ASAN_##Name)); 46 #include "gwp_asan/options.inc" 47 #undef GWP_ASAN_OPTION 48 #endif // GWP_ASAN_HOOKS 49 } 50 51 static const char *getCompileDefinitionScudoDefaultOptions() { 52 #ifdef SCUDO_DEFAULT_OPTIONS 53 return STRINGIFY(SCUDO_DEFAULT_OPTIONS); 54 #else 55 return ""; 56 #endif 57 } 58 59 static const char *getScudoDefaultOptions() { 60 return (&__scudo_default_options) ? __scudo_default_options() : ""; 61 } 62 63 void initFlags() { 64 Flags *F = getFlags(); 65 F->setDefaults(); 66 FlagParser Parser; 67 registerFlags(&Parser, F); 68 Parser.parseString(getCompileDefinitionScudoDefaultOptions()); 69 Parser.parseString(getScudoDefaultOptions()); 70 Parser.parseString(getEnv("SCUDO_OPTIONS")); 71 } 72 73 } // namespace scudo 74