diff --git a/src/libstore/path.cc b/src/libstore/path.cc index ec3e53232..69f6d7356 100644 --- a/src/libstore/path.cc +++ b/src/libstore/path.cc @@ -1,4 +1,4 @@ -#include "store-api.hh" +#include "store-dir-config.hh" #include @@ -54,7 +54,7 @@ StorePath StorePath::random(std::string_view name) return StorePath(hash, name); } -StorePath Store::parseStorePath(std::string_view path) const +StorePath StoreDirConfig::parseStorePath(std::string_view path) const { auto p = canonPath(std::string(path)); if (dirOf(p) != storeDir) @@ -62,7 +62,7 @@ StorePath Store::parseStorePath(std::string_view path) const return StorePath(baseNameOf(p)); } -std::optional Store::maybeParseStorePath(std::string_view path) const +std::optional StoreDirConfig::maybeParseStorePath(std::string_view path) const { try { return parseStorePath(path); @@ -71,24 +71,24 @@ std::optional Store::maybeParseStorePath(std::string_view path) const } } -bool Store::isStorePath(std::string_view path) const +bool StoreDirConfig::isStorePath(std::string_view path) const { return (bool) maybeParseStorePath(path); } -StorePathSet Store::parseStorePathSet(const PathSet & paths) const +StorePathSet StoreDirConfig::parseStorePathSet(const PathSet & paths) const { StorePathSet res; for (auto & i : paths) res.insert(parseStorePath(i)); return res; } -std::string Store::printStorePath(const StorePath & path) const +std::string StoreDirConfig::printStorePath(const StorePath & path) const { return (storeDir + "/").append(path.to_string()); } -PathSet Store::printStorePathSet(const StorePathSet & paths) const +PathSet StoreDirConfig::printStorePathSet(const StorePathSet & paths) const { PathSet res; for (auto & i : paths) res.insert(printStorePath(i)); diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc index 646b0ec7d..a681bb6cf 100644 --- a/src/libstore/store-api.cc +++ b/src/libstore/store-api.cc @@ -23,13 +23,13 @@ using json = nlohmann::json; namespace nix { -bool Store::isInStore(PathView path) const +bool StoreDirConfig::isInStore(PathView path) const { return isInDir(path, storeDir); } -std::pair Store::toStorePath(PathView path) const +std::pair StoreDirConfig::toStorePath(PathView path) const { if (!isInStore(path)) throw Error("path '%1%' is not in the Nix store", path); @@ -143,7 +143,7 @@ StorePath Store::followLinksToStorePath(std::string_view path) const */ -StorePath Store::makeStorePath(std::string_view type, +StorePath StoreDirConfig::makeStorePath(std::string_view type, std::string_view hash, std::string_view name) const { /* e.g., "source:sha256:1abc...:/nix/store:foo.tar.gz" */ @@ -154,14 +154,14 @@ StorePath Store::makeStorePath(std::string_view type, } -StorePath Store::makeStorePath(std::string_view type, +StorePath StoreDirConfig::makeStorePath(std::string_view type, const Hash & hash, std::string_view name) const { return makeStorePath(type, hash.to_string(HashFormat::Base16, true), name); } -StorePath Store::makeOutputPath(std::string_view id, +StorePath StoreDirConfig::makeOutputPath(std::string_view id, const Hash & hash, std::string_view name) const { return makeStorePath("output:" + std::string { id }, hash, outputPathName(name, id)); @@ -172,7 +172,7 @@ StorePath Store::makeOutputPath(std::string_view id, hacky, but we can't put them in, say, (per the grammar above) since that would be ambiguous. */ static std::string makeType( - const Store & store, + const StoreDirConfig & store, std::string && type, const StoreReferences & references) { @@ -185,7 +185,7 @@ static std::string makeType( } -StorePath Store::makeFixedOutputPath(std::string_view name, const FixedOutputInfo & info) const +StorePath StoreDirConfig::makeFixedOutputPath(std::string_view name, const FixedOutputInfo & info) const { if (info.hash.type == htSHA256 && info.method == FileIngestionMethod::Recursive) { return makeStorePath(makeType(*this, "source", info.references), info.hash, name); @@ -201,7 +201,7 @@ StorePath Store::makeFixedOutputPath(std::string_view name, const FixedOutputInf } -StorePath Store::makeTextPath(std::string_view name, const TextInfo & info) const +StorePath StoreDirConfig::makeTextPath(std::string_view name, const TextInfo & info) const { assert(info.hash.type == htSHA256); return makeStorePath( @@ -214,7 +214,7 @@ StorePath Store::makeTextPath(std::string_view name, const TextInfo & info) cons } -StorePath Store::makeFixedOutputPathFromCA(std::string_view name, const ContentAddressWithReferences & ca) const +StorePath StoreDirConfig::makeFixedOutputPathFromCA(std::string_view name, const ContentAddressWithReferences & ca) const { // New template return std::visit(overloaded { @@ -228,7 +228,7 @@ StorePath Store::makeFixedOutputPathFromCA(std::string_view name, const ContentA } -std::pair Store::computeStorePathFromDump( +std::pair StoreDirConfig::computeStorePathFromDump( Source & dump, std::string_view name, FileIngestionMethod method, @@ -247,7 +247,7 @@ std::pair Store::computeStorePathFromDump( } -StorePath Store::computeStorePathForText( +StorePath StoreDirConfig::computeStorePathForText( std::string_view name, std::string_view s, const StorePathSet & references) const @@ -1315,7 +1315,7 @@ std::optional decodeValidPathInfo(const Store & store, std::istre } -std::string Store::showPaths(const StorePathSet & paths) +std::string StoreDirConfig::showPaths(const StorePathSet & paths) { std::string s; for (auto & i : paths) { diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh index 6aa317e3d..bee5ec16c 100644 --- a/src/libstore/store-api.hh +++ b/src/libstore/store-api.hh @@ -14,6 +14,7 @@ #include "config.hh" #include "path-info.hh" #include "repair-flag.hh" +#include "store-dir-config.hh" #include #include @@ -64,7 +65,6 @@ MakeError(InvalidPath, Error); MakeError(Unsupported, Error); MakeError(SubstituteGone, Error); MakeError(SubstituterDisabled, Error); -MakeError(BadStorePath, Error); MakeError(InvalidStoreURI, Error); @@ -97,11 +97,11 @@ struct KeyedBuildResult; typedef std::map> StorePathCAMap; -struct StoreConfig : public Config +struct StoreConfig : public StoreDirConfig { typedef std::map Params; - using Config::Config; + using StoreDirConfig::StoreDirConfig; StoreConfig() = delete; @@ -131,15 +131,6 @@ struct StoreConfig : public Config return std::nullopt; } - const PathSetting storeDir_{this, settings.nixStore, - "store", - R"( - Logical location of the Nix store, usually - `/nix/store`. Note that you can only copy store paths - between stores if they have the same `store` setting. - )"}; - const Path storeDir = storeDir_; - const Setting pathInfoCacheSize{this, 65536, "path-info-cache-size", "Size of the in-memory store path metadata cache."}; @@ -224,45 +215,6 @@ public: virtual std::string getUri() = 0; - StorePath parseStorePath(std::string_view path) const; - - std::optional maybeParseStorePath(std::string_view path) const; - - std::string printStorePath(const StorePath & path) const; - - /** - * Deprecated - * - * \todo remove - */ - StorePathSet parseStorePathSet(const PathSet & paths) const; - - PathSet printStorePathSet(const StorePathSet & path) const; - - /** - * Display a set of paths in human-readable form (i.e., between quotes - * and separated by commas). - */ - std::string showPaths(const StorePathSet & paths); - - /** - * @return true if ‘path’ is in the Nix store (but not the Nix - * store itself). - */ - bool isInStore(PathView path) const; - - /** - * @return true if ‘path’ is a store path, i.e. a direct child of the - * Nix store. - */ - bool isStorePath(std::string_view path) const; - - /** - * Split a path like /nix/store/-/ into - * /nix/store/- and /. - */ - std::pair toStorePath(PathView path) const; - /** * Follow symlinks until we end up with a path in the Nix store. */ @@ -274,55 +226,6 @@ public: */ StorePath followLinksToStorePath(std::string_view path) const; - /** - * Constructs a unique store path name. - */ - StorePath makeStorePath(std::string_view type, - std::string_view hash, std::string_view name) const; - StorePath makeStorePath(std::string_view type, - const Hash & hash, std::string_view name) const; - - StorePath makeOutputPath(std::string_view id, - const Hash & hash, std::string_view name) const; - - StorePath makeFixedOutputPath(std::string_view name, const FixedOutputInfo & info) const; - - StorePath makeTextPath(std::string_view name, const TextInfo & info) const; - - StorePath makeFixedOutputPathFromCA(std::string_view name, const ContentAddressWithReferences & ca) const; - - /** - * Read-only variant of addToStoreFromDump(). It returns the store - * path to which a NAR or flat file would be written. - */ - std::pair computeStorePathFromDump( - Source & dump, - std::string_view name, - FileIngestionMethod method = FileIngestionMethod::Recursive, - HashType hashAlgo = htSHA256, - const StorePathSet & references = {}) const; - - /** - * Preparatory part of addTextToStore(). - * - * !!! Computation of the path should take the references given to - * addTextToStore() into account, otherwise we have a (relatively - * minor) security hole: a caller can register a source file with - * bogus references. If there are too many references, the path may - * not be garbage collected when it has to be (not really a problem, - * the caller could create a root anyway), or it may be garbage - * collected when it shouldn't be (more serious). - * - * Hashing the references would solve this (bogus references would - * simply yield a different store path, so other users wouldn't be - * affected), but it has some backwards compatibility issues (the - * hashing scheme changes), so I'm not doing that for now. - */ - StorePath computeStorePathForText( - std::string_view name, - std::string_view s, - const StorePathSet & references) const; - /** * Check whether a path is valid. */ diff --git a/src/libstore/store-dir-config.hh b/src/libstore/store-dir-config.hh new file mode 100644 index 000000000..53843d663 --- /dev/null +++ b/src/libstore/store-dir-config.hh @@ -0,0 +1,126 @@ +#pragma once + +#include "path.hh" +#include "hash.hh" +#include "content-address.hh" +#include "globals.hh" +#include "config.hh" + +#include +#include +#include + + +namespace nix { + +MakeError(BadStorePath, Error); + +struct StoreDirConfig : public Config +{ + using Config::Config; + + StoreDirConfig() = delete; + + virtual ~StoreDirConfig() = default; + + const PathSetting storeDir_{this, settings.nixStore, + "store", + R"( + Logical location of the Nix store, usually + `/nix/store`. Note that you can only copy store paths + between stores if they have the same `store` setting. + )"}; + const Path storeDir = storeDir_; + + // pure methods + + StorePath parseStorePath(std::string_view path) const; + + std::optional maybeParseStorePath(std::string_view path) const; + + std::string printStorePath(const StorePath & path) const; + + /** + * Deprecated + * + * \todo remove + */ + StorePathSet parseStorePathSet(const PathSet & paths) const; + + PathSet printStorePathSet(const StorePathSet & path) const; + + /** + * Display a set of paths in human-readable form (i.e., between quotes + * and separated by commas). + */ + std::string showPaths(const StorePathSet & paths); + + /** + * @return true if ‘path’ is in the Nix store (but not the Nix + * store itself). + */ + bool isInStore(PathView path) const; + + /** + * @return true if ‘path’ is a store path, i.e. a direct child of the + * Nix store. + */ + bool isStorePath(std::string_view path) const; + + /** + * Split a path like /nix/store/-/ into + * /nix/store/- and /. + */ + std::pair toStorePath(PathView path) const; + + /** + * Constructs a unique store path name. + */ + StorePath makeStorePath(std::string_view type, + std::string_view hash, std::string_view name) const; + StorePath makeStorePath(std::string_view type, + const Hash & hash, std::string_view name) const; + + StorePath makeOutputPath(std::string_view id, + const Hash & hash, std::string_view name) const; + + StorePath makeFixedOutputPath(std::string_view name, const FixedOutputInfo & info) const; + + StorePath makeTextPath(std::string_view name, const TextInfo & info) const; + + StorePath makeFixedOutputPathFromCA(std::string_view name, const ContentAddressWithReferences & ca) const; + + /** + * Read-only variant of addToStoreFromDump(). It returns the store + * path to which a NAR or flat file would be written. + */ + std::pair computeStorePathFromDump( + Source & dump, + std::string_view name, + FileIngestionMethod method = FileIngestionMethod::Recursive, + HashType hashAlgo = htSHA256, + const StorePathSet & references = {}) const; + + /** + * Preparatory part of addTextToStore(). + * + * !!! Computation of the path should take the references given to + * addTextToStore() into account, otherwise we have a (relatively + * minor) security hole: a caller can register a source file with + * bogus references. If there are too many references, the path may + * not be garbage collected when it has to be (not really a problem, + * the caller could create a root anyway), or it may be garbage + * collected when it shouldn't be (more serious). + * + * Hashing the references would solve this (bogus references would + * simply yield a different store path, so other users wouldn't be + * affected), but it has some backwards compatibility issues (the + * hashing scheme changes), so I'm not doing that for now. + */ + StorePath computeStorePathForText( + std::string_view name, + std::string_view s, + const StorePathSet & references) const; +}; + +}