diff options
Diffstat (limited to 'third_party/nix/src/libstore/build.cc')
| -rw-r--r-- | third_party/nix/src/libstore/build.cc | 101 |
1 files changed, 51 insertions, 50 deletions
diff --git a/third_party/nix/src/libstore/build.cc b/third_party/nix/src/libstore/build.cc index 3349e1e8c8e9..efc1e5a1263e 100644 --- a/third_party/nix/src/libstore/build.cc +++ b/third_party/nix/src/libstore/build.cc @@ -1,18 +1,19 @@ #include <algorithm> +#include <cerrno> #include <chrono> +#include <climits> #include <cstring> #include <future> #include <iostream> #include <map> +#include <memory> #include <queue> #include <regex> #include <sstream> #include <thread> -#include <errno.h> #include <fcntl.h> #include <grp.h> -#include <limits.h> #include <netdb.h> #include <pwd.h> #include <sys/resource.h> @@ -67,6 +68,7 @@ #endif #include <nlohmann/json.hpp> +#include <utility> namespace nix { @@ -81,8 +83,8 @@ struct HookInstance; /* A pointer to a goal. */ class Goal; class DerivationGoal; -typedef std::shared_ptr<Goal> GoalPtr; -typedef std::weak_ptr<Goal> WeakGoalPtr; +using GoalPtr = std::shared_ptr<Goal>; +using WeakGoalPtr = std::weak_ptr<Goal>; struct CompareGoalPtrs { bool operator()(const GoalPtr& a, const GoalPtr& b) const; @@ -90,7 +92,7 @@ struct CompareGoalPtrs { /* Set of goals. */ typedef set<GoalPtr, CompareGoalPtrs> Goals; -typedef list<WeakGoalPtr> WeakGoals; +using WeakGoals = list<WeakGoalPtr>; /* A map of paths to goals (and the other way around). */ typedef map<Path, WeakGoalPtr> WeakGoalMap; @@ -174,7 +176,7 @@ bool CompareGoalPtrs::operator()(const GoalPtr& a, const GoalPtr& b) const { return s1 < s2; } -typedef std::chrono::time_point<std::chrono::steady_clock> steady_time_point; +using steady_time_point = std::chrono::time_point<std::chrono::steady_clock>; /* A mapping used to remember for each child process to what goal it belongs, and file descriptors for receiving log data and output @@ -816,7 +818,7 @@ class DerivationGoal : public Goal { /* Whether to run the build in a private network namespace. */ bool privateNetwork = false; - typedef void (DerivationGoal::*GoalState)(); + using GoalState = void (DerivationGoal::*)(); GoalState state; /* Stuff we need to pass to initChild(). */ @@ -824,7 +826,7 @@ class DerivationGoal : public Goal { Path source; bool optional; explicit ChrootPath(Path source = "", bool optional = false) - : source(source), optional(optional) {} + : source(std::move(source)), optional(optional) {} }; typedef map<Path, ChrootPath> DirsInChroot; // maps target path to source path @@ -874,11 +876,11 @@ class DerivationGoal : public Goal { std::string machineName; public: - DerivationGoal(const Path& drvPath, const StringSet& wantedOutputs, - Worker& worker, BuildMode buildMode = bmNormal); + DerivationGoal(const Path& drvPath, StringSet wantedOutputs, Worker& worker, + BuildMode buildMode = bmNormal); DerivationGoal(const Path& drvPath, const BasicDerivation& drv, Worker& worker, BuildMode buildMode = bmNormal); - ~DerivationGoal(); + ~DerivationGoal() override; /* Whether we need to perform hash rewriting if there are valid output paths. */ @@ -982,13 +984,12 @@ class DerivationGoal : public Goal { const Path DerivationGoal::homeDir = "/homeless-shelter"; -DerivationGoal::DerivationGoal(const Path& drvPath, - const StringSet& wantedOutputs, Worker& worker, - BuildMode buildMode) +DerivationGoal::DerivationGoal(const Path& drvPath, StringSet wantedOutputs, + Worker& worker, BuildMode buildMode) : Goal(worker), useDerivation(true), drvPath(drvPath), - wantedOutputs(wantedOutputs), + wantedOutputs(std::move(wantedOutputs)), buildMode(buildMode) { state = &DerivationGoal::getDerivation; name = (format("building of '%1%'") % drvPath).str(); @@ -1004,7 +1005,7 @@ DerivationGoal::DerivationGoal(const Path& drvPath, const BasicDerivation& drv, useDerivation(false), drvPath(drvPath), buildMode(buildMode) { - this->drv = std::unique_ptr<BasicDerivation>(new BasicDerivation(drv)); + this->drv = std::make_unique<BasicDerivation>(drv); state = &DerivationGoal::haveDerivation; name = (format("building of %1%") % showPaths(drv.outputPaths())).str(); trace("created"); @@ -1473,7 +1474,7 @@ void DerivationGoal::tryToBuild() { case rpAccept: /* Yes, it has started doing so. Wait until we get EOF from the hook. */ - result.startTime = time(0); // inexact + result.startTime = time(nullptr); // inexact state = &DerivationGoal::buildDone; started(); return; @@ -1554,7 +1555,7 @@ MakeError(NotDeterministic, BuildError) DLOG(INFO) << "builder process for '" << drvPath << "' finished"; result.timesBuilt++; - result.stopTime = time(0); + result.stopTime = time(nullptr); /* So the child is gone now. */ worker.childTerminated(this); @@ -1674,7 +1675,7 @@ MakeError(NotDeterministic, BuildError) currentLine.clear(); } - ~LogSink() { + ~LogSink() override { if (currentLine != "") { currentLine += '\n'; flushLine(); @@ -1785,7 +1786,7 @@ HookReply DerivationGoal::tryBuildHook() { return rpDecline; } else if (reply == "decline-permanently") { worker.tryBuildHook = false; - worker.hook = 0; + worker.hook = nullptr; return rpDecline; } else if (reply == "postpone") { return rpPostpone; @@ -1796,7 +1797,7 @@ HookReply DerivationGoal::tryBuildHook() { if (e.errNo == EPIPE) { LOG(ERROR) << "build hook died unexpectedly: " << chomp(drainFD(worker.hook->fromHook.readSide.get())); - worker.hook = 0; + worker.hook = nullptr; return rpDecline; } else { throw; @@ -1892,10 +1893,10 @@ static void preloadNSS() { load its lookup libraries in the parent before any child gets a chance to. */ std::call_once(dns_resolve_flag, []() { - struct addrinfo* res = NULL; + struct addrinfo* res = nullptr; if (getaddrinfo("this.pre-initializes.the.dns.resolvers.invalid.", "http", - NULL, &res) != 0) { + nullptr, &res) != 0) { if (res) { freeaddrinfo(res); } @@ -2000,12 +2001,12 @@ void DerivationGoal::startBuilder() { by `nix-store --register-validity'. However, the deriver fields are left empty. */ string s = get(drv->env, "exportReferencesGraph"); - Strings ss = tokenizeString<Strings>(s); + auto ss = tokenizeString<Strings>(s); if (ss.size() % 2 != 0) { throw BuildError( format("odd number of tokens in 'exportReferencesGraph': '%1%'") % s); } - for (Strings::iterator i = ss.begin(); i != ss.end();) { + for (auto i = ss.begin(); i != ss.end();) { string fileName = *i++; checkStoreName(fileName); /* !!! abuse of this function */ Path storePath = *i++; @@ -2331,7 +2332,7 @@ void DerivationGoal::startBuilder() { throw SysError("putting pseudoterminal into raw mode"); } - result.startTime = time(0); + result.startTime = time(nullptr); /* Fork a child to build the package. */ ProcessOptions options; @@ -2390,13 +2391,13 @@ void DerivationGoal::startBuilder() { not seem to be a workaround for this. (But who can tell from reading user_namespaces(7)?) See also https://lwn.net/Articles/621612/. */ - if (getuid() == 0 && setgroups(0, 0) == -1) { + if (getuid() == 0 && setgroups(0, nullptr) == -1) { throw SysError("setgroups failed"); } size_t stackSize = 1 * 1024 * 1024; char* stack = - (char*)mmap(0, stackSize, PROT_WRITE | PROT_READ, + (char*)mmap(nullptr, stackSize, PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0); if (stack == MAP_FAILED) { throw SysError("allocating stack"); @@ -2519,8 +2520,7 @@ void DerivationGoal::initTmpDir() { needed (attributes are not passed through the environment, so there is no size constraint). */ if (!parsedDrv->getStructuredAttrs()) { - StringSet passAsFile = - tokenizeString<StringSet>(get(drv->env, "passAsFile")); + auto passAsFile = tokenizeString<StringSet>(get(drv->env, "passAsFile")); int fileNr = 0; for (auto& i : drv->env) { if (passAsFile.find(i.first) == passAsFile.end()) { @@ -2893,14 +2893,14 @@ void DerivationGoal::runChild() { outside of the namespace. Making a subtree private is local to the namespace, though, so setting MS_PRIVATE does not affect the outside world. */ - if (mount(0, "/", 0, MS_REC | MS_PRIVATE, 0) == -1) { + if (mount(nullptr, "/", nullptr, MS_REC | MS_PRIVATE, nullptr) == -1) { throw SysError("unable to make '/' private mount"); } /* Bind-mount chroot directory to itself, to treat it as a different filesystem from /, as needed for pivot_root. */ - if (mount(chrootRootDir.c_str(), chrootRootDir.c_str(), 0, MS_BIND, 0) == - -1) { + if (mount(chrootRootDir.c_str(), chrootRootDir.c_str(), nullptr, MS_BIND, + nullptr) == -1) { throw SysError(format("unable to bind mount '%1%'") % chrootRootDir); } @@ -2970,8 +2970,8 @@ void DerivationGoal::runChild() { createDirs(dirOf(target)); writeFile(target, ""); } - if (mount(source.c_str(), target.c_str(), "", MS_BIND | MS_REC, 0) == - -1) { + if (mount(source.c_str(), target.c_str(), "", MS_BIND | MS_REC, + nullptr) == -1) { throw SysError("bind mount from '%1%' to '%2%' failed", source, target); } @@ -2986,8 +2986,8 @@ void DerivationGoal::runChild() { /* Bind a new instance of procfs on /proc. */ createDirs(chrootRootDir + "/proc"); - if (mount("none", (chrootRootDir + "/proc").c_str(), "proc", 0, 0) == - -1) { + if (mount("none", (chrootRootDir + "/proc").c_str(), "proc", 0, + nullptr) == -1) { throw SysError("mounting /proc"); } @@ -3589,7 +3589,7 @@ void DerivationGoal::registerOutputs() { /* For debugging, print out the referenced and unreferenced paths. */ for (auto& i : inputPaths) { - PathSet::iterator j = references.find(i); + auto j = references.find(i); if (j == references.end()) { DLOG(INFO) << "unreferenced input: '" << i << "'"; } else { @@ -3841,14 +3841,14 @@ void DerivationGoal::checkOutputs( auto i = output->find(name); if (i != output->end()) { Strings res; - for (auto j = i->begin(); j != i->end(); ++j) { - if (!j->is_string()) { + for (auto& j : *i) { + if (!j.is_string()) { throw Error( "attribute '%s' of derivation '%s' must be a list of " "strings", name, drvPath); } - res.push_back(j->get<std::string>()); + res.push_back(j.get<std::string>()); } checks.disallowedRequisites = res; return res; @@ -3922,7 +3922,7 @@ void DerivationGoal::closeLogFile() { if (logFileSink) { logFileSink->flush(); } - logSink = logFileSink = 0; + logSink = logFileSink = nullptr; fdLogFile = -1; } @@ -4099,13 +4099,13 @@ class SubstitutionGoal : public Goal { maintainRunningSubstitutions, maintainExpectedNar, maintainExpectedDownload; - typedef void (SubstitutionGoal::*GoalState)(); + using GoalState = void (SubstitutionGoal::*)(); GoalState state; public: SubstitutionGoal(const Path& storePath, Worker& worker, RepairFlag repair = NoRepair); - ~SubstitutionGoal(); + ~SubstitutionGoal() override; void timedOut() override { abort(); }; @@ -4459,9 +4459,9 @@ GoalPtr Worker::makeSubstitutionGoal(const Path& path, RepairFlag repair) { static void removeGoal(GoalPtr goal, WeakGoalMap& goalMap) { /* !!! inefficient */ - for (WeakGoalMap::iterator i = goalMap.begin(); i != goalMap.end();) { + for (auto i = goalMap.begin(); i != goalMap.end();) { if (i->second.lock() == goal) { - WeakGoalMap::iterator j = i; + auto j = i; ++j; goalMap.erase(i); i = j; @@ -4570,7 +4570,7 @@ void Worker::run(const Goals& _topGoals) { DLOG(INFO) << "entered goal loop"; - while (1) { + while (true) { checkInterrupt(); store.autoGC(false); @@ -4704,7 +4704,8 @@ void Worker::waitForInput() { } } - if (select(fdMax, &fds, 0, 0, useTimeout ? &timeout : 0) == -1) { + if (select(fdMax, &fds, nullptr, nullptr, useTimeout ? &timeout : nullptr) == + -1) { if (errno == EINTR) { return; } @@ -4810,7 +4811,7 @@ unsigned int Worker::exitStatus() { } bool Worker::pathContentsGood(const Path& path) { - std::map<Path, bool>::iterator i = pathContentsGoodCache.find(path); + auto i = pathContentsGoodCache.find(path); if (i != pathContentsGoodCache.end()) { return i->second; } @@ -4874,7 +4875,7 @@ void LocalStore::buildPaths(const PathSet& drvPaths, BuildMode buildMode) { PathSet failed; for (auto& i : goals) { if (i->getExitCode() != Goal::ecSuccess) { - DerivationGoal* i2 = dynamic_cast<DerivationGoal*>(i.get()); + auto* i2 = dynamic_cast<DerivationGoal*>(i.get()); if (i2) { failed.insert(i2->getDrvPath()); } else { |