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 .Case("cosmic", Distro::UbuntuCosmic) 53 .Default(Distro::UnknownDistro); 54 if (Version != Distro::UnknownDistro) 55 return Version; 56 } 57 58 File = VFS.getBufferForFile("/etc/redhat-release"); 59 if (File) { 60 StringRef Data = File.get()->getBuffer(); 61 if (Data.startswith("Fedora release")) 62 return Distro::Fedora; 63 if (Data.startswith("Red Hat Enterprise Linux") || 64 Data.startswith("CentOS") || 65 Data.startswith("Scientific Linux")) { 66 if (Data.find("release 7") != StringRef::npos) 67 return Distro::RHEL7; 68 else if (Data.find("release 6") != StringRef::npos) 69 return Distro::RHEL6; 70 else if (Data.find("release 5") != StringRef::npos) 71 return Distro::RHEL5; 72 } 73 return Distro::UnknownDistro; 74 } 75 76 File = VFS.getBufferForFile("/etc/debian_version"); 77 if (File) { 78 StringRef Data = File.get()->getBuffer(); 79 // Contents: < major.minor > or < codename/sid > 80 int MajorVersion; 81 if (!Data.split('.').first.getAsInteger(10, MajorVersion)) { 82 switch (MajorVersion) { 83 case 5: 84 return Distro::DebianLenny; 85 case 6: 86 return Distro::DebianSqueeze; 87 case 7: 88 return Distro::DebianWheezy; 89 case 8: 90 return Distro::DebianJessie; 91 case 9: 92 return Distro::DebianStretch; 93 case 10: 94 return Distro::DebianBuster; 95 default: 96 return Distro::UnknownDistro; 97 } 98 } 99 return llvm::StringSwitch<Distro::DistroType>(Data.split("\n").first) 100 .Case("squeeze/sid", Distro::DebianSqueeze) 101 .Case("wheezy/sid", Distro::DebianWheezy) 102 .Case("jessie/sid", Distro::DebianJessie) 103 .Case("stretch/sid", Distro::DebianStretch) 104 .Default(Distro::UnknownDistro); 105 } 106 107 File = VFS.getBufferForFile("/etc/SuSE-release"); 108 if (File) { 109 StringRef Data = File.get()->getBuffer(); 110 SmallVector<StringRef, 8> Lines; 111 Data.split(Lines, "\n"); 112 for (const StringRef& Line : Lines) { 113 if (!Line.trim().startswith("VERSION")) 114 continue; 115 std::pair<StringRef, StringRef> SplitLine = Line.split('='); 116 // Old versions have split VERSION and PATCHLEVEL 117 // Newer versions use VERSION = x.y 118 std::pair<StringRef, StringRef> SplitVer = SplitLine.second.trim().split('.'); 119 int Version; 120 121 // OpenSUSE/SLES 10 and older are not supported and not compatible 122 // with our rules, so just treat them as Distro::UnknownDistro. 123 if (!SplitVer.first.getAsInteger(10, Version) && Version > 10) 124 return Distro::OpenSUSE; 125 return Distro::UnknownDistro; 126 } 127 return Distro::UnknownDistro; 128 } 129 130 if (VFS.exists("/etc/exherbo-release")) 131 return Distro::Exherbo; 132 133 if (VFS.exists("/etc/alpine-release")) 134 return Distro::AlpineLinux; 135 136 if (VFS.exists("/etc/arch-release")) 137 return Distro::ArchLinux; 138 139 return Distro::UnknownDistro; 140 } 141 142 Distro::Distro(vfs::FileSystem &VFS) : DistroVal(DetectDistro(VFS)) {} 143