nix/libstore/globals.cc

   1 #include "config.h"
   2
   3 #include "globals.hh"
   4 #include "util.hh"
   5 #include "archive.hh"
   6
   7 #include <map>
   8 #include <algorithm>
   9
  10
  11 namespace nix {
  12
  13
  14 /* The default location of the daemon socket, relative to nixStateDir.
  15    The socket is in a directory to allow you to control access to the
  16    build daemon by setting the mode/ownership of the directory
  17    appropriately.  (This wouldn't work on the socket itself since it
  18    must be deleted and recreated on startup.) */
  19 #define DEFAULT_SOCKET_PATH "/daemon-socket/socket"
  20
  21
  22 Settings settings;
  23
  24
  25 Settings::Settings()
  26 {
  27     keepFailed = false;
  28     keepGoing = false;
  29     tryFallback = false;
  30     buildVerbosity = lvlError;
  31     maxBuildJobs = 1;
  32     buildCores = 1;
  33     readOnlyMode = false;
  34     thisSystem = SYSTEM;
  35     maxSilentTime = 0;
  36     buildTimeout = 0;
  37     useBuildHook = true;
  38     printBuildTrace = false;
  39     multiplexedBuildOutput = false;
  40     reservedSize = 8 * 1024 * 1024;
  41     fsyncMetadata = true;
  42     useSQLiteWAL = true;
  43     syncBeforeRegistering = false;
  44     useSubstitutes = true;
  45     useChroot = false;
  46     impersonateLinux26 = false;
  47     keepLog = true;
  48 #if HAVE_BZLIB_H
  49     logCompression = COMPRESSION_BZIP2;
  50 #else
  51     logCompression = COMPRESSION_GZIP;
  52 #endif
  53     maxLogSize = 0;
  54     cacheFailure = false;
  55     pollInterval = 5;
  56     checkRootReachability = false;
  57     gcKeepOutputs = false;
  58     gcKeepDerivations = true;
  59     autoOptimiseStore = false;
  60     envKeepDerivations = false;
  61     lockCPU = getEnv("NIX_AFFINITY_HACK", "1") == "1";
  62     showTrace = false;
  63 }
  64
  65
  66 void Settings::processEnvironment()
  67 {
  68     nixStore = canonPath(getEnv("NIX_STORE_DIR", getEnv("NIX_STORE", NIX_STORE_DIR)));
  69     nixLogDir = canonPath(getEnv("GUIX_LOG_DIRECTORY", NIX_LOG_DIR));
  70     nixStateDir = canonPath(getEnv("GUIX_STATE_DIRECTORY", NIX_STATE_DIR));
  71     nixDBPath = getEnv("GUIX_DATABASE_DIRECTORY", nixStateDir + "/db");
  72     nixConfDir = canonPath(getEnv("GUIX_CONFIGURATION_DIRECTORY", GUIX_CONFIGURATION_DIRECTORY));
  73     nixLibexecDir = canonPath(getEnv("NIX_LIBEXEC_DIR", NIX_LIBEXEC_DIR));
  74     nixBinDir = canonPath(getEnv("NIX_BIN_DIR", NIX_BIN_DIR));
  75     nixDaemonSocketFile = canonPath(nixStateDir + DEFAULT_SOCKET_PATH);
  76 }
  77
  78
  79 void Settings::set(const string & name, const string & value)
  80 {
  81     settings[name] = value;
  82     overrides[name] = value;
  83 }
  84
  85
  86 string Settings::get(const string & name, const string & def)
  87 {
  88     auto i = settings.find(name);
  89     if (i == settings.end()) return def;
  90     return i->second;
  91 }
  92
  93
  94 Strings Settings::get(const string & name, const Strings & def)
  95 {
  96     auto i = settings.find(name);
  97     if (i == settings.end()) return def;
  98     return tokenizeString<Strings>(i->second);
  99 }
 100
 101
 102 bool Settings::get(const string & name, bool def)
 103 {
 104     bool res = def;
 105     _get(res, name);
 106     return res;
 107 }
 108
 109 int Settings::get(const string & name, int def)
 110 {
 111     int res = def;
 112     _get(res, name);
 113     return res;
 114 }
 115
 116
 117 void Settings::update()
 118 {
 119     _get(tryFallback, "build-fallback");
 120     _get(maxBuildJobs, "build-max-jobs");
 121     _get(buildCores, "build-cores");
 122     _get(thisSystem, "system");
 123     _get(multiplexedBuildOutput, "multiplexed-build-output");
 124     _get(maxSilentTime, "build-max-silent-time");
 125     _get(buildTimeout, "build-timeout");
 126     _get(reservedSize, "gc-reserved-space");
 127     _get(fsyncMetadata, "fsync-metadata");
 128     _get(useSQLiteWAL, "use-sqlite-wal");
 129     _get(syncBeforeRegistering, "sync-before-registering");
 130     _get(useSubstitutes, "build-use-substitutes");
 131     _get(buildUsersGroup, "build-users-group");
 132     _get(useChroot, "build-use-chroot");
 133     _get(impersonateLinux26, "build-impersonate-linux-26");
 134     _get(keepLog, "build-keep-log");
 135     // _get(logCompression, "build-log-compression");
 136     _get(maxLogSize, "build-max-log-size");
 137     _get(cacheFailure, "build-cache-failure");
 138     _get(pollInterval, "build-poll-interval");
 139     _get(checkRootReachability, "gc-check-reachability");
 140     _get(gcKeepOutputs, "gc-keep-outputs");
 141     _get(gcKeepDerivations, "gc-keep-derivations");
 142     _get(autoOptimiseStore, "auto-optimise-store");
 143     _get(envKeepDerivations, "env-keep-derivations");
 144 }
 145
 146
 147 void Settings::_get(string & res, const string & name)
 148 {
 149     SettingsMap::iterator i = settings.find(name);
 150     if (i == settings.end()) return;
 151     res = i->second;
 152 }
 153
 154
 155 void Settings::_get(bool & res, const string & name)
 156 {
 157     SettingsMap::iterator i = settings.find(name);
 158     if (i == settings.end()) return;
 159     if (i->second == "true") res = true;
 160     else if (i->second == "false") res = false;
 161     else throw Error(format("configuration option `%1%' should be either `true' or `false', not `%2%'")
 162         % name % i->second);
 163 }
 164
 165
 166 void Settings::_get(StringSet & res, const string & name)
 167 {
 168     SettingsMap::iterator i = settings.find(name);
 169     if (i == settings.end()) return;
 170     res.clear();
 171     Strings ss = tokenizeString<Strings>(i->second);
 172     res.insert(ss.begin(), ss.end());
 173 }
 174
 175 void Settings::_get(Strings & res, const string & name)
 176 {
 177     SettingsMap::iterator i = settings.find(name);
 178     if (i == settings.end()) return;
 179     res = tokenizeString<Strings>(i->second);
 180 }
 181
 182
 183 template<class N> void Settings::_get(N & res, const string & name)
 184 {
 185     SettingsMap::iterator i = settings.find(name);
 186     if (i == settings.end()) return;
 187     if (!string2Int(i->second, res))
 188         throw Error(format("configuration setting `%1%' should have an integer value") % name);
 189 }
 190
 191
 192 string Settings::pack()
 193 {
 194     string s;
 195     foreach (SettingsMap::iterator, i, settings) {
 196         if (i->first.find('\n') != string::npos ||
 197             i->first.find('=') != string::npos ||
 198             i->second.find('\n') != string::npos)
 199             throw Error("illegal option name/value");
 200         s += i->first; s += '='; s += i->second; s += '\n';
 201     }
 202     return s;
 203 }
 204
 205
 206 Settings::SettingsMap Settings::getOverrides()
 207 {
 208     return overrides;
 209 }
 210
 211
 212 const string nixVersion = PACKAGE_VERSION;
 213
 214
 215 }