2012-07-18 18:59:03 +00:00
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#pragma once
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2006-11-30 17:43:04 +00:00
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2016-03-30 11:27:25 +00:00
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#include "sqlite.hh"
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2006-11-30 17:43:04 +00:00
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2016-03-30 11:27:25 +00:00
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#include "pathlocks.hh"
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2006-11-30 17:43:04 +00:00
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#include "store-api.hh"
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2020-10-09 20:18:08 +00:00
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#include "local-fs-store.hh"
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2022-03-01 18:31:36 +00:00
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#include "gc-store.hh"
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2016-04-08 16:07:13 +00:00
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#include "sync.hh"
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2008-06-09 13:52:45 +00:00
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#include "util.hh"
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2010-02-18 13:16:59 +00:00
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2017-09-05 18:43:42 +00:00
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#include <chrono>
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#include <future>
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2016-04-08 16:07:13 +00:00
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#include <string>
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#include <unordered_set>
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2006-11-30 17:43:04 +00:00
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namespace nix {
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/* Nix store and database schema version. Version 1 (or 0) was Nix <=
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2007-08-13 11:37:39 +00:00
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0.7. Version 2 was Nix 0.8 and 0.9. Version 3 is Nix 0.10.
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2010-08-31 11:47:31 +00:00
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Version 4 is Nix 0.11. Version 5 is Nix 0.12-0.16. Version 6 is
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2018-01-31 17:58:45 +00:00
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Nix 1.0. Version 7 is Nix 1.3. Version 10 is 2.0. */
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2016-08-03 11:17:11 +00:00
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const int nixSchemaVersion = 10;
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2006-11-30 17:43:04 +00:00
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2007-10-09 22:14:27 +00:00
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struct OptimiseStats
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{
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2017-04-10 09:12:45 +00:00
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unsigned long filesLinked = 0;
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2020-07-30 11:10:49 +00:00
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uint64_t bytesFreed = 0;
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uint64_t blocksFreed = 0;
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2007-10-09 22:14:27 +00:00
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};
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2020-09-11 09:06:18 +00:00
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struct LocalStoreConfig : virtual LocalFSStoreConfig
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{
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using LocalFSStoreConfig::LocalFSStoreConfig;
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Setting<bool> requireSigs{(StoreConfig*) this,
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settings.requireSigs,
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"require-sigs", "whether store paths should have a trusted signature on import"};
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2020-09-14 12:04:02 +00:00
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const std::string name() override { return "Local Store"; }
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2007-10-09 22:14:27 +00:00
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};
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2022-03-01 18:31:36 +00:00
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class LocalStore : public virtual LocalStoreConfig, public virtual LocalFSStore, public virtual GcStore
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2006-11-30 17:43:04 +00:00
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{
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2007-08-12 00:29:28 +00:00
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private:
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2012-07-23 19:02:52 +00:00
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2016-04-08 16:07:13 +00:00
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/* Lock file used for upgrading. */
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AutoCloseFD globalLock;
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2012-07-30 23:55:41 +00:00
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2016-04-08 16:07:13 +00:00
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struct State
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{
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/* The SQLite database object. */
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SQLite db;
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2020-12-08 05:57:31 +00:00
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struct Stmts;
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std::unique_ptr<Stmts> stmts;
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2016-04-08 16:07:13 +00:00
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2021-08-16 18:03:32 +00:00
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/* The global GC lock */
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AutoCloseFD fdGCLock;
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/* Connection to the garbage collector. */
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AutoCloseFD fdRootsSocket;
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2017-09-05 18:43:42 +00:00
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/* The last time we checked whether to do an auto-GC, or an
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auto-GC finished. */
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std::chrono::time_point<std::chrono::steady_clock> lastGCCheck;
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/* Whether auto-GC is running. If so, get gcFuture to wait for
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the GC to finish. */
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bool gcRunning = false;
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std::shared_future<void> gcFuture;
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/* How much disk space was available after the previous
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auto-GC. If the current available disk space is below
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minFree but not much below availAfterGC, then there is no
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point in starting a new GC. */
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uint64_t availAfterGC = std::numeric_limits<uint64_t>::max();
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2018-04-13 13:42:35 +00:00
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std::unique_ptr<PublicKeys> publicKeys;
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2016-04-08 16:07:13 +00:00
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};
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2020-11-03 11:52:57 +00:00
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Sync<State> _state;
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2016-04-08 16:07:13 +00:00
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2016-06-02 14:51:43 +00:00
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public:
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2016-06-02 11:33:49 +00:00
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const Path dbDir;
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2016-04-08 16:07:13 +00:00
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const Path linksDir;
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const Path reservedPath;
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const Path schemaPath;
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2017-09-05 18:39:57 +00:00
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const Path tempRootsDir;
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const Path fnTempRoots;
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2016-02-24 16:33:53 +00:00
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2016-06-02 14:51:43 +00:00
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private:
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2018-04-13 13:42:35 +00:00
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const PublicKeys & getPublicKeys();
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2016-05-30 11:55:09 +00:00
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2006-11-30 17:43:04 +00:00
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public:
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2018-02-12 21:48:55 +00:00
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// Hack for build-remote.cc.
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2019-11-22 15:06:44 +00:00
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PathSet locksHeld;
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2018-02-12 21:48:55 +00:00
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2008-06-09 13:52:45 +00:00
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/* Initialise the local store, upgrading the schema if
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necessary. */
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2016-06-01 12:49:12 +00:00
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LocalStore(const Params & params);
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2006-11-30 17:43:04 +00:00
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~LocalStore();
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2012-07-30 23:55:41 +00:00
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2006-11-30 17:43:04 +00:00
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/* Implementations of abstract store API methods. */
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2012-07-30 23:55:41 +00:00
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2016-04-29 14:26:16 +00:00
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std::string getUri() override;
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2019-12-05 18:11:09 +00:00
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bool isValidPathUncached(const StorePath & path) override;
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2006-11-30 17:43:04 +00:00
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2019-12-05 18:11:09 +00:00
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StorePathSet queryValidPaths(const StorePathSet & paths,
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2017-06-28 16:11:01 +00:00
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SubstituteFlag maybeSubstitute = NoSubstitute) override;
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2012-07-30 23:55:41 +00:00
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2019-12-05 18:11:09 +00:00
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StorePathSet queryAllValidPaths() override;
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2012-07-30 23:55:41 +00:00
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2019-12-05 18:11:09 +00:00
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void queryPathInfoUncached(const StorePath & path,
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2018-09-25 16:54:16 +00:00
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Callback<std::shared_ptr<const ValidPathInfo>> callback) noexcept override;
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2006-11-30 17:43:04 +00:00
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2019-12-05 18:11:09 +00:00
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void queryReferrers(const StorePath & path, StorePathSet & referrers) override;
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2006-11-30 17:43:04 +00:00
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2019-12-05 18:11:09 +00:00
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StorePathSet queryValidDerivers(const StorePath & path) override;
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2010-02-22 12:44:36 +00:00
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2020-08-20 18:14:12 +00:00
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std::map<std::string, std::optional<StorePath>> queryPartialDerivationOutputMap(const StorePath & path) override;
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2011-11-06 06:28:20 +00:00
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2019-12-05 18:11:09 +00:00
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std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override;
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2012-07-30 23:55:41 +00:00
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2019-12-05 18:11:09 +00:00
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StorePathSet querySubstitutablePaths(const StorePathSet & paths) override;
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2008-08-02 12:54:35 +00:00
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2020-06-17 19:03:05 +00:00
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void querySubstitutablePathInfos(const StorePathCAMap & paths,
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2015-09-17 23:22:06 +00:00
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SubstitutablePathInfos & infos) override;
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2012-07-30 23:55:41 +00:00
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2021-03-08 14:07:33 +00:00
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bool pathInfoIsUntrusted(const ValidPathInfo &) override;
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2021-03-08 10:56:33 +00:00
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bool realisationIsUntrusted(const Realisation & ) override;
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2021-01-15 16:37:41 +00:00
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2018-03-16 19:22:34 +00:00
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void addToStore(const ValidPathInfo & info, Source & source,
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2020-07-13 15:37:44 +00:00
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RepairFlag repair, CheckSigsFlag checkSigs) override;
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2006-11-30 17:43:04 +00:00
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2022-02-15 14:08:06 +00:00
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StorePath addToStoreFromDump(Source & dump, std::string_view name,
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2021-11-09 09:24:49 +00:00
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FileIngestionMethod method, HashType hashAlgo, RepairFlag repair, const StorePathSet & references) override;
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2008-12-03 18:05:14 +00:00
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2022-02-25 15:00:00 +00:00
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StorePath addTextToStore(
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std::string_view name,
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std::string_view s,
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const StorePathSet & references,
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RepairFlag repair) override;
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2006-11-30 17:43:04 +00:00
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2019-12-05 18:11:09 +00:00
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void addTempRoot(const StorePath & path) override;
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2006-12-02 16:41:36 +00:00
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2023-01-03 13:51:23 +00:00
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private:
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void createTempRootsFile();
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/* The file to which we write our temporary roots. */
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Sync<AutoCloseFD> _fdTempRoots;
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public:
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2015-09-17 23:22:06 +00:00
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void addIndirectRoot(const Path & path) override;
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2012-07-30 23:55:41 +00:00
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2016-06-02 11:33:49 +00:00
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private:
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2021-08-16 18:03:32 +00:00
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void findTempRoots(Roots & roots, bool censor);
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2016-06-02 11:33:49 +00:00
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2021-08-19 20:43:43 +00:00
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AutoCloseFD openGCLock();
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2016-06-02 11:33:49 +00:00
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public:
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2019-03-14 12:50:07 +00:00
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Roots findRoots(bool censor) override;
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2006-12-05 02:18:46 +00:00
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2015-09-17 23:22:06 +00:00
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void collectGarbage(const GCOptions & options, GCResults & results) override;
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2007-10-09 22:14:27 +00:00
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/* Optimise the disk space usage of the Nix store by hard-linking
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files with the same contents. */
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2012-07-23 16:08:34 +00:00
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void optimiseStore(OptimiseStats & stats);
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2006-11-30 17:43:04 +00:00
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2015-09-17 23:22:06 +00:00
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void optimiseStore() override;
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2014-09-01 20:21:42 +00:00
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2022-01-11 10:57:45 +00:00
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/* Optimise a single store path. Optionally, test the encountered
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symlinks for corruption. */
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2022-01-11 12:34:57 +00:00
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void optimisePath(const Path & path, RepairFlag repair);
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2012-07-30 23:55:41 +00:00
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2017-06-28 16:11:01 +00:00
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bool verifyStore(bool checkContents, RepairFlag repair) override;
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2006-11-30 17:43:04 +00:00
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2008-06-09 13:52:45 +00:00
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/* Register the validity of a path, i.e., that `path' exists, that
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the paths referenced by it exists, and in the case of an output
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2013-08-10 21:36:16 +00:00
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path of a derivation, that it has been produced by a successful
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2008-06-09 13:52:45 +00:00
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execution of the derivation (or something equivalent). Also
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register the hash of the file system contents of the path. The
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hash must be a SHA-256 hash. */
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2010-11-16 17:11:46 +00:00
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void registerValidPath(const ValidPathInfo & info);
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2006-11-30 17:43:04 +00:00
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2008-06-09 13:52:45 +00:00
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void registerValidPaths(const ValidPathInfos & infos);
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2018-08-30 21:28:47 +00:00
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unsigned int getProtocol() override;
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2012-09-13 18:33:41 +00:00
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void vacuumDB();
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2021-01-13 22:27:39 +00:00
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void repairPath(const StorePath & path) override;
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2012-10-02 18:08:59 +00:00
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2019-12-05 18:11:09 +00:00
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void addSignatures(const StorePath & storePath, const StringSet & sigs) override;
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2016-04-05 13:30:22 +00:00
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2017-09-05 18:43:42 +00:00
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/* If free disk space in /nix/store if below minFree, delete
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garbage until it exceeds maxFree. */
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void autoGC(bool sync = true);
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2020-10-08 15:36:51 +00:00
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/* Register the store path 'output' as the output named 'outputName' of
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derivation 'deriver'. */
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2020-10-20 13:14:02 +00:00
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void registerDrvOutput(const Realisation & info) override;
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2021-03-08 15:43:11 +00:00
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void registerDrvOutput(const Realisation & info, CheckSigsFlag checkSigs) override;
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2022-02-25 15:00:00 +00:00
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void cacheDrvOutputMapping(
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State & state,
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const uint64_t deriver,
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const std::string & outputName,
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const StorePath & output);
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2020-10-08 15:36:51 +00:00
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2021-05-19 14:19:46 +00:00
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std::optional<const Realisation> queryRealisation_(State & state, const DrvOutput & id);
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std::optional<std::pair<int64_t, Realisation>> queryRealisationCore_(State & state, const DrvOutput & id);
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2021-10-27 09:36:51 +00:00
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void queryRealisationUncached(const DrvOutput&,
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Callback<std::shared_ptr<const Realisation>> callback) noexcept override;
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2020-10-08 15:36:51 +00:00
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2022-01-25 20:14:27 +00:00
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std::optional<std::string> getVersion() override;
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2020-10-08 15:36:51 +00:00
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2016-01-31 09:19:14 +00:00
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private:
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2016-04-08 16:07:13 +00:00
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int getSchema();
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2010-02-24 15:07:23 +00:00
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2016-04-08 16:07:13 +00:00
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void openDB(State & state, bool create);
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2012-07-30 23:55:41 +00:00
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2016-04-08 16:07:13 +00:00
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void makeStoreWritable();
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2012-07-30 23:55:41 +00:00
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2019-12-05 18:11:09 +00:00
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uint64_t queryValidPathId(State & state, const StorePath & path);
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2012-07-30 23:55:41 +00:00
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2016-04-08 16:07:13 +00:00
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uint64_t addValidPath(State & state, const ValidPathInfo & info, bool checkOutputs = true);
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2008-06-09 13:52:45 +00:00
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2019-12-05 18:11:09 +00:00
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void invalidatePath(State & state, const StorePath & path);
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2010-02-18 15:11:08 +00:00
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2012-03-26 18:43:33 +00:00
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/* Delete a path from the Nix store. */
|
2019-12-05 18:11:09 +00:00
|
|
|
|
void invalidatePathChecked(const StorePath & path);
|
2012-07-30 23:55:41 +00:00
|
|
|
|
|
2019-12-05 18:11:09 +00:00
|
|
|
|
void verifyPath(const Path & path, const StringSet & store,
|
|
|
|
|
PathSet & done, StorePathSet & validPaths, RepairFlag repair, bool & errors);
|
2010-08-31 11:47:31 +00:00
|
|
|
|
|
2021-01-05 10:47:29 +00:00
|
|
|
|
std::shared_ptr<const ValidPathInfo> queryPathInfoInternal(State & state, const StorePath & path);
|
|
|
|
|
|
2016-04-08 16:07:13 +00:00
|
|
|
|
void updatePathInfo(State & state, const ValidPathInfo & info);
|
2010-12-06 15:29:38 +00:00
|
|
|
|
|
2010-02-18 13:16:59 +00:00
|
|
|
|
void upgradeStore6();
|
2013-01-03 11:59:23 +00:00
|
|
|
|
void upgradeStore7();
|
2010-02-18 15:11:08 +00:00
|
|
|
|
PathSet queryValidPathsOld();
|
|
|
|
|
ValidPathInfo queryPathInfoOld(const Path & path);
|
2008-06-09 13:52:45 +00:00
|
|
|
|
|
Eliminate the "store" global variable
Also, move a few free-standing functions into StoreAPI and Derivation.
Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
2016-02-04 13:28:26 +00:00
|
|
|
|
void findRoots(const Path & path, unsigned char type, Roots & roots);
|
|
|
|
|
|
2019-03-14 12:50:07 +00:00
|
|
|
|
void findRootsNoTemp(Roots & roots, bool censor);
|
2017-09-14 12:38:36 +00:00
|
|
|
|
|
2019-03-14 12:50:07 +00:00
|
|
|
|
void findRuntimeRoots(Roots & roots, bool censor);
|
Eliminate the "store" global variable
Also, move a few free-standing functions into StoreAPI and Derivation.
Also, introduce a non-nullable smart pointer, ref<T>, which is just a
wrapper around std::shared_ptr ensuring that the pointer is never
null. (For reference-counted values, this is better than passing a
"T&", because the latter doesn't maintain the refcount. Usually, the
caller will have a shared_ptr keeping the value alive, but that's not
always the case, e.g., when passing a reference to a std::thread via
std::bind.)
2016-02-04 13:28:26 +00:00
|
|
|
|
|
2022-09-06 22:48:00 +00:00
|
|
|
|
std::pair<Path, AutoCloseFD> createTempDirInStore();
|
2011-07-20 18:10:47 +00:00
|
|
|
|
|
2019-12-05 18:11:09 +00:00
|
|
|
|
void checkDerivationOutputs(const StorePath & drvPath, const Derivation & drv);
|
2012-07-23 19:02:52 +00:00
|
|
|
|
|
2014-05-26 15:53:17 +00:00
|
|
|
|
typedef std::unordered_set<ino_t> InodeHash;
|
2014-05-13 21:10:06 +00:00
|
|
|
|
|
2014-05-14 20:52:10 +00:00
|
|
|
|
InodeHash loadInodeHash();
|
2014-05-15 09:33:46 +00:00
|
|
|
|
Strings readDirectoryIgnoringInodes(const Path & path, const InodeHash & inodeHash);
|
2022-01-11 12:34:57 +00:00
|
|
|
|
void optimisePath_(Activity * act, OptimiseStats & stats, const Path & path, InodeHash & inodeHash, RepairFlag repair);
|
2013-10-16 13:58:20 +00:00
|
|
|
|
|
|
|
|
|
// Internal versions that are not wrapped in retry_sqlite.
|
2019-12-05 18:11:09 +00:00
|
|
|
|
bool isValidPath_(State & state, const StorePath & path);
|
|
|
|
|
void queryReferrers(State & state, const StorePath & path, StorePathSet & referrers);
|
2016-04-07 12:14:06 +00:00
|
|
|
|
|
2021-03-08 10:56:33 +00:00
|
|
|
|
/* Add signatures to a ValidPathInfo or Realisation using the secret keys
|
2016-11-25 23:37:43 +00:00
|
|
|
|
specified by the ‘secret-key-files’ option. */
|
2016-04-07 12:14:06 +00:00
|
|
|
|
void signPathInfo(ValidPathInfo & info);
|
2021-03-08 10:56:33 +00:00
|
|
|
|
void signRealisation(Realisation &);
|
2020-08-07 19:09:26 +00:00
|
|
|
|
|
2019-10-09 16:01:21 +00:00
|
|
|
|
void createUser(const std::string & userName, uid_t userId) override;
|
|
|
|
|
|
2021-05-27 11:25:25 +00:00
|
|
|
|
// XXX: Make a generic `Store` method
|
|
|
|
|
FixedOutputHash hashCAPath(
|
|
|
|
|
const FileIngestionMethod & method,
|
|
|
|
|
const HashType & hashType,
|
|
|
|
|
const StorePath & path);
|
|
|
|
|
|
|
|
|
|
FixedOutputHash hashCAPath(
|
|
|
|
|
const FileIngestionMethod & method,
|
|
|
|
|
const HashType & hashType,
|
|
|
|
|
const Path & path,
|
|
|
|
|
const std::string_view pathHash
|
|
|
|
|
);
|
|
|
|
|
|
2022-01-17 18:45:21 +00:00
|
|
|
|
void addBuildLog(const StorePath & drvPath, std::string_view log) override;
|
|
|
|
|
|
2021-02-26 15:20:33 +00:00
|
|
|
|
friend struct LocalDerivationGoal;
|
2020-11-09 12:47:06 +00:00
|
|
|
|
friend struct PathSubstitutionGoal;
|
2020-12-01 13:57:56 +00:00
|
|
|
|
friend struct SubstitutionGoal;
|
2020-11-09 12:47:06 +00:00
|
|
|
|
friend struct DerivationGoal;
|
2008-06-09 13:52:45 +00:00
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
2013-06-13 15:29:56 +00:00
|
|
|
|
typedef std::pair<dev_t, ino_t> Inode;
|
2022-02-21 15:28:23 +00:00
|
|
|
|
typedef std::set<Inode> InodesSeen;
|
2013-06-13 15:29:56 +00:00
|
|
|
|
|
|
|
|
|
|
2006-11-30 17:43:04 +00:00
|
|
|
|
/* "Fix", or canonicalise, the meta-data of the files in a store path
|
|
|
|
|
after it has been built. In particular:
|
2009-06-13 16:30:58 +00:00
|
|
|
|
- the last modification date on each file is set to 1 (i.e.,
|
|
|
|
|
00:00:01 1/1/1970 UTC)
|
2006-11-30 17:43:04 +00:00
|
|
|
|
- the permissions are set of 444 or 555 (i.e., read-only with or
|
|
|
|
|
without execute permission; setuid bits etc. are cleared)
|
|
|
|
|
- the owner and group are set to the Nix user and group, if we're
|
2020-05-14 11:52:41 +00:00
|
|
|
|
running as root.
|
|
|
|
|
If uidRange is not empty, this function will throw an error if it
|
|
|
|
|
encounters files owned by a user outside of the closed interval
|
|
|
|
|
[uidRange->first, uidRange->second].
|
|
|
|
|
*/
|
|
|
|
|
void canonicalisePathMetaData(
|
|
|
|
|
const Path & path,
|
|
|
|
|
std::optional<std::pair<uid_t, uid_t>> uidRange,
|
|
|
|
|
InodesSeen & inodesSeen);
|
|
|
|
|
void canonicalisePathMetaData(
|
|
|
|
|
const Path & path,
|
|
|
|
|
std::optional<std::pair<uid_t, uid_t>> uidRange);
|
2006-11-30 17:43:04 +00:00
|
|
|
|
|
2013-03-08 00:24:59 +00:00
|
|
|
|
void canonicaliseTimestampAndPermissions(const Path & path);
|
2006-11-30 17:43:04 +00:00
|
|
|
|
|
2007-01-14 16:24:49 +00:00
|
|
|
|
MakeError(PathInUse, Error);
|
|
|
|
|
|
2006-11-30 17:43:04 +00:00
|
|
|
|
}
|