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