mirror of
https://github.com/NixOS/nix
synced 2024-09-20 23:28:26 -04:00
ba9ad29fdb
This makes all config options self-documenting. Unknown or unparseable config settings and --option flags now cause a warning.
116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
#include "globals.hh"
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#include "util.hh"
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#include "archive.hh"
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#include "args.hh"
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#include <algorithm>
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#include <map>
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#include <thread>
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namespace nix {
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/* The default location of the daemon socket, relative to nixStateDir.
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The socket is in a directory to allow you to control access to the
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Nix daemon by setting the mode/ownership of the directory
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appropriately. (This wouldn't work on the socket itself since it
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must be deleted and recreated on startup.) */
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#define DEFAULT_SOCKET_PATH "/daemon-socket/socket"
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/* chroot-like behavior from Apple's sandbox */
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#if __APPLE__
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#define DEFAULT_ALLOWED_IMPURE_PREFIXES "/System/Library /usr/lib /dev /bin/sh"
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#else
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#define DEFAULT_ALLOWED_IMPURE_PREFIXES ""
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#endif
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Settings settings;
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Settings::Settings()
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: Config({})
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, nixPrefix(NIX_PREFIX)
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, nixStore(canonPath(getEnv("NIX_STORE_DIR", getEnv("NIX_STORE", NIX_STORE_DIR))))
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, nixDataDir(canonPath(getEnv("NIX_DATA_DIR", NIX_DATA_DIR)))
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, nixLogDir(canonPath(getEnv("NIX_LOG_DIR", NIX_LOG_DIR)))
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, nixStateDir(canonPath(getEnv("NIX_STATE_DIR", NIX_STATE_DIR)))
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, nixConfDir(canonPath(getEnv("NIX_CONF_DIR", NIX_CONF_DIR)))
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, nixLibexecDir(canonPath(getEnv("NIX_LIBEXEC_DIR", NIX_LIBEXEC_DIR)))
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, nixBinDir(canonPath(getEnv("NIX_BIN_DIR", NIX_BIN_DIR)))
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, nixDaemonSocketFile(canonPath(nixStateDir + DEFAULT_SOCKET_PATH))
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{
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buildUsersGroup = getuid() == 0 ? "nixbld" : "";
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lockCPU = getEnv("NIX_AFFINITY_HACK", "1") == "1";
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caFile = getEnv("NIX_SSL_CERT_FILE", getEnv("SSL_CERT_FILE", "/etc/ssl/certs/ca-certificates.crt"));
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#if __linux__
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sandboxPaths = tokenizeString<StringSet>("/bin/sh=" BASH_PATH);
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#endif
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allowedImpureHostPrefixes = tokenizeString<StringSet>(DEFAULT_ALLOWED_IMPURE_PREFIXES);
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}
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void Settings::loadConfFile()
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{
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applyConfigFile(nixConfDir + "/nix.conf");
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}
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void Settings::set(const string & name, const string & value)
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{
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overrides[name] = value;
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Config::set(name, value);
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}
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StringMap Settings::getOverrides()
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{
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return overrides;
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}
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unsigned int Settings::getDefaultCores()
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{
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return std::max(1U, std::thread::hardware_concurrency());
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}
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const string nixVersion = PACKAGE_VERSION;
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template<> void Setting<SandboxMode>::set(const std::string & str)
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{
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if (str == "true") value = smEnabled;
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else if (str == "relaxed") value = smRelaxed;
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else if (str == "false") value = smDisabled;
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else throw UsageError("option '%s' has invalid value '%s'", name, str);
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}
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template<> std::string Setting<SandboxMode>::to_string()
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{
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if (value == smEnabled) return "true";
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else if (value == smRelaxed) return "relaxed";
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else if (value == smDisabled) return "false";
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else abort();
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}
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template<> void Setting<unsigned int, Settings::MaxBuildJobsTag>::set(const std::string & str)
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{
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if (str == "auto") value = std::max(1U, std::thread::hardware_concurrency());
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else if (!string2Int(str, value))
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throw UsageError("configuration setting ‘%s’ should be ‘auto’ or an integer", name);
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}
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template<> std::string Setting<unsigned int, Settings::MaxBuildJobsTag>::to_string()
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{
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return std::to_string(value);
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}
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template<> void Setting<bool, Settings::CaseHackTag>::set(const std::string & str)
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{
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value = parseBool(str);
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nix::useCaseHack = true;
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}
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template<> std::string Setting<bool, Settings::CaseHackTag>::to_string()
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{
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return printBool(value);
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}
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}
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