1 //===--- Distro.cpp - Linux distribution detection support ------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Driver/Distro.h" 11 #include "clang/Basic/LLVM.h" 12 #include "llvm/ADT/SmallVector.h" 13 #include "llvm/ADT/StringRef.h" 14 #include "llvm/ADT/StringSwitch.h" 15 #include "llvm/Support/ErrorOr.h" 16 #include "llvm/Support/MemoryBuffer.h" 17 18 using namespace clang::driver; 19 using namespace clang; 20 21 static Distro::DistroType DetectDistro(llvm::vfs::FileSystem &VFS) { 22 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 23 VFS.getBufferForFile("/etc/lsb-release"); 24 if (File) { 25 StringRef Data = File.get()->getBuffer(); 26 SmallVector<StringRef, 16> Lines; 27 Data.split(Lines, "\n"); 28 Distro::DistroType Version = Distro::UnknownDistro; 29 for (StringRef Line : Lines) 30 if (Version == Distro::UnknownDistro && Line.startswith("DISTRIB_CODENAME=")) 31 Version = llvm::StringSwitch<Distro::DistroType>(Line.substr(17)) 32 .Case("hardy", Distro::UbuntuHardy) 33 .Case("intrepid", Distro::UbuntuIntrepid) 34 .Case("jaunty", Distro::UbuntuJaunty) 35 .Case("karmic", Distro::UbuntuKarmic) 36 .Case("lucid", Distro::UbuntuLucid) 37 .Case("maverick", Distro::UbuntuMaverick) 38 .Case("natty", Distro::UbuntuNatty) 39 .Case("oneiric", Distro::UbuntuOneiric) 40 .Case("precise", Distro::UbuntuPrecise) 41 .Case("quantal", Distro::UbuntuQuantal) 42 .Case("raring", Distro::UbuntuRaring) 43 .Case("saucy", Distro::UbuntuSaucy) 44 .Case("trusty", Distro::UbuntuTrusty) 45 .Case("utopic", Distro::UbuntuUtopic) 46 .Case("vivid", Distro::UbuntuVivid) 47 .Case("wily", Distro::UbuntuWily) 48 .Case("xenial", Distro::UbuntuXenial) 49 .Case("yakkety", Distro::UbuntuYakkety) 50 .Case("zesty", Distro::UbuntuZesty) 51 .Case("artful", Distro::UbuntuArtful) 52 .Case("bionic", Distro::UbuntuBionic) 53 .Case("cosmic", Distro::UbuntuCosmic) 54 .Case("disco", Distro::UbuntuDisco) 55 .Default(Distro::UnknownDistro); 56 if (Version != Distro::UnknownDistro) 57 return Version; 58 } 59 60 File = VFS.getBufferForFile("/etc/redhat-release"); 61 if (File) { 62 StringRef Data = File.get()->getBuffer(); 63 if (Data.startswith("Fedora release")) 64 return Distro::Fedora; 65 if (Data.startswith("Red Hat Enterprise Linux") || 66 Data.startswith("CentOS") || 67 Data.startswith("Scientific Linux")) { 68 if (Data.find("release 7") != StringRef::npos) 69 return Distro::RHEL7; 70 else if (Data.find("release 6") != StringRef::npos) 71 return Distro::RHEL6; 72 else if (Data.find("release 5") != StringRef::npos) 73 return Distro::RHEL5; 74 } 75 return Distro::UnknownDistro; 76 } 77 78 File = VFS.getBufferForFile("/etc/debian_version"); 79 if (File) { 80 StringRef Data = File.get()->getBuffer(); 81 // Contents: < major.minor > or < codename/sid > 82 int MajorVersion; 83 if (!Data.split('.').first.getAsInteger(10, MajorVersion)) { 84 switch (MajorVersion) { 85 case 5: 86 return Distro::DebianLenny; 87 case 6: 88 return Distro::DebianSqueeze; 89 case 7: 90 return Distro::DebianWheezy; 91 case 8: 92 return Distro::DebianJessie; 93 case 9: 94 return Distro::DebianStretch; 95 case 10: 96 return Distro::DebianBuster; 97 default: 98 return Distro::UnknownDistro; 99 } 100 } 101 return llvm::StringSwitch<Distro::DistroType>(Data.split("\n").first) 102 .Case("squeeze/sid", Distro::DebianSqueeze) 103 .Case("wheezy/sid", Distro::DebianWheezy) 104 .Case("jessie/sid", Distro::DebianJessie) 105 .Case("stretch/sid", Distro::DebianStretch) 106 .Default(Distro::UnknownDistro); 107 } 108 109 File = VFS.getBufferForFile("/etc/SuSE-release"); 110 if (File) { 111 StringRef Data = File.get()->getBuffer(); 112 SmallVector<StringRef, 8> Lines; 113 Data.split(Lines, "\n"); 114 for (const StringRef& Line : Lines) { 115 if (!Line.trim().startswith("VERSION")) 116 continue; 117 std::pair<StringRef, StringRef> SplitLine = Line.split('='); 118 // Old versions have split VERSION and PATCHLEVEL 119 // Newer versions use VERSION = x.y 120 std::pair<StringRef, StringRef> SplitVer = SplitLine.second.trim().split('.'); 121 int Version; 122 123 // OpenSUSE/SLES 10 and older are not supported and not compatible 124 // with our rules, so just treat them as Distro::UnknownDistro. 125 if (!SplitVer.first.getAsInteger(10, Version) && Version > 10) 126 return Distro::OpenSUSE; 127 return Distro::UnknownDistro; 128 } 129 return Distro::UnknownDistro; 130 } 131 132 if (VFS.exists("/etc/exherbo-release")) 133 return Distro::Exherbo; 134 135 if (VFS.exists("/etc/alpine-release")) 136 return Distro::AlpineLinux; 137 138 if (VFS.exists("/etc/arch-release")) 139 return Distro::ArchLinux; 140 141 return Distro::UnknownDistro; 142 } 143 144 Distro::Distro(llvm::vfs::FileSystem &VFS) : DistroVal(DetectDistro(VFS)) {} 145