1 //===--- Distro.cpp - Linux distribution detection support ------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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"
18 using namespace clang::driver;
19 using namespace clang;
21 static Distro::DistroType DetectDistro(llvm::vfs::FileSystem &VFS) {
22 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
23 VFS.getBufferForFile("/etc/lsb-release");
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)
60 File = VFS.getBufferForFile("/etc/redhat-release");
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)
70 else if (Data.find("release 6") != StringRef::npos)
72 else if (Data.find("release 5") != StringRef::npos)
75 return Distro::UnknownDistro;
78 File = VFS.getBufferForFile("/etc/debian_version");
80 StringRef Data = File.get()->getBuffer();
81 // Contents: < major.minor > or < codename/sid >
83 if (!Data.split('.').first.getAsInteger(10, MajorVersion)) {
84 switch (MajorVersion) {
86 return Distro::DebianLenny;
88 return Distro::DebianSqueeze;
90 return Distro::DebianWheezy;
92 return Distro::DebianJessie;
94 return Distro::DebianStretch;
96 return Distro::DebianBuster;
98 return Distro::UnknownDistro;
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);
109 File = VFS.getBufferForFile("/etc/SuSE-release");
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"))
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('.');
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;
129 return Distro::UnknownDistro;
132 if (VFS.exists("/etc/exherbo-release"))
133 return Distro::Exherbo;
135 if (VFS.exists("/etc/alpine-release"))
136 return Distro::AlpineLinux;
138 if (VFS.exists("/etc/arch-release"))
139 return Distro::ArchLinux;
141 if (VFS.exists("/etc/gentoo-release"))
142 return Distro::Gentoo;
144 return Distro::UnknownDistro;
147 Distro::Distro(llvm::vfs::FileSystem &VFS) : DistroVal(DetectDistro(VFS)) {}