mirror of
https://github.com/NixOS/nix
synced 2025-06-27 00:11:17 +02:00
Merge remote-tracking branch 'origin/master' into large-path-warning
This commit is contained in:
Eelco Dolstra
commit
7f5b57d18f
435 changed files with 6086 additions and 2767 deletions
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@ -8,7 +8,6 @@
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#include "util.hh"
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#include "nar-info-disk-cache.hh"
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#include "thread-pool.hh"
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#include "url.hh"
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#include "references.hh"
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#include "archive.hh"
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#include "callback.hh"
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@ -21,7 +20,6 @@
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#include "users.hh"
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#include <nlohmann/json.hpp>
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#include <regex>
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using json = nlohmann::json;
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@ -1274,144 +1272,63 @@ Derivation Store::readInvalidDerivation(const StorePath & drvPath)
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namespace nix {
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/* Split URI into protocol+hierarchy part and its parameter set. */
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std::pair<std::string, Store::Params> splitUriAndParams(const std::string & uri_)
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{
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auto uri(uri_);
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Store::Params params;
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auto q = uri.find('?');
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if (q != std::string::npos) {
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params = decodeQuery(uri.substr(q + 1));
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uri = uri_.substr(0, q);
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}
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return {uri, params};
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}
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static bool isNonUriPath(const std::string & spec)
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{
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return
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// is not a URL
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spec.find("://") == std::string::npos
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// Has at least one path separator, and so isn't a single word that
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// might be special like "auto"
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&& spec.find("/") != std::string::npos;
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}
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std::shared_ptr<Store> openFromNonUri(const std::string & uri, const Store::Params & params)
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{
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// TODO reenable on Windows once we have `LocalStore` and
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// `UDSRemoteStore`.
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if (uri == "" || uri == "auto") {
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auto stateDir = getOr(params, "state", settings.nixStateDir);
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if (access(stateDir.c_str(), R_OK | W_OK) == 0)
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return std::make_shared<LocalStore>(params);
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else if (pathExists(settings.nixDaemonSocketFile))
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return std::make_shared<UDSRemoteStore>(params);
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#if __linux__
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else if (!pathExists(stateDir)
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&& params.empty()
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&& !isRootUser()
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&& !getEnv("NIX_STORE_DIR").has_value()
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&& !getEnv("NIX_STATE_DIR").has_value())
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{
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/* If /nix doesn't exist, there is no daemon socket, and
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we're not root, then automatically set up a chroot
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store in ~/.local/share/nix/root. */
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auto chrootStore = getDataDir() + "/nix/root";
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if (!pathExists(chrootStore)) {
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try {
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createDirs(chrootStore);
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} catch (Error & e) {
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return std::make_shared<LocalStore>(params);
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}
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warn("'%s' does not exist, so Nix will use '%s' as a chroot store", stateDir, chrootStore);
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} else
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debug("'%s' does not exist, so Nix will use '%s' as a chroot store", stateDir, chrootStore);
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Store::Params params2;
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params2["root"] = chrootStore;
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return std::make_shared<LocalStore>(params2);
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}
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#endif
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else
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return std::make_shared<LocalStore>(params);
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} else if (uri == "daemon") {
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return std::make_shared<UDSRemoteStore>(params);
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} else if (uri == "local") {
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return std::make_shared<LocalStore>(params);
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} else if (isNonUriPath(uri)) {
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Store::Params params2 = params;
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params2["root"] = absPath(uri);
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return std::make_shared<LocalStore>(params2);
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} else {
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return nullptr;
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}
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}
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// The `parseURL` function supports both IPv6 URIs as defined in
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// RFC2732, but also pure addresses. The latter one is needed here to
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// connect to a remote store via SSH (it's possible to do e.g. `ssh root@::1`).
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//
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// This function now ensures that a usable connection string is available:
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// * If the store to be opened is not an SSH store, nothing will be done.
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// * If the URL looks like `root@[::1]` (which is allowed by the URL parser and probably
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// needed to pass further flags), it
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// will be transformed into `root@::1` for SSH (same for `[::1]` -> `::1`).
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// * If the URL looks like `root@::1` it will be left as-is.
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// * In any other case, the string will be left as-is.
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static std::string extractConnStr(const std::string &proto, const std::string &connStr)
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{
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if (proto.rfind("ssh") != std::string::npos) {
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std::smatch result;
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std::regex v6AddrRegex("^((.*)@)?\\[(.*)\\]$");
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if (std::regex_match(connStr, result, v6AddrRegex)) {
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if (result[1].matched) {
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return result.str(1) + result.str(3);
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}
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return result.str(3);
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}
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}
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return connStr;
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}
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ref<Store> openStore(const std::string & uri_,
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ref<Store> openStore(const std::string & uri,
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const Store::Params & extraParams)
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{
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auto params = extraParams;
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try {
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auto parsedUri = parseURL(uri_);
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params.insert(parsedUri.query.begin(), parsedUri.query.end());
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return openStore(StoreReference::parse(uri, extraParams));
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}
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auto baseURI = extractConnStr(
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parsedUri.scheme,
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parsedUri.authority.value_or("") + parsedUri.path
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);
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ref<Store> openStore(StoreReference && storeURI)
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{
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auto & params = storeURI.params;
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for (auto implem : *Implementations::registered) {
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if (implem.uriSchemes.count(parsedUri.scheme)) {
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auto store = implem.create(parsedUri.scheme, baseURI, params);
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if (store) {
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experimentalFeatureSettings.require(store->experimentalFeature());
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store->init();
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store->warnUnknownSettings();
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return ref<Store>(store);
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}
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auto store = std::visit(overloaded {
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[&](const StoreReference::Auto &) -> std::shared_ptr<Store> {
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auto stateDir = getOr(params, "state", settings.nixStateDir);
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if (access(stateDir.c_str(), R_OK | W_OK) == 0)
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return std::make_shared<LocalStore>(params);
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else if (pathExists(settings.nixDaemonSocketFile))
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return std::make_shared<UDSRemoteStore>(params);
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#if __linux__
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else if (!pathExists(stateDir)
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&& params.empty()
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&& !isRootUser()
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&& !getEnv("NIX_STORE_DIR").has_value()
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&& !getEnv("NIX_STATE_DIR").has_value())
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{
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/* If /nix doesn't exist, there is no daemon socket, and
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we're not root, then automatically set up a chroot
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store in ~/.local/share/nix/root. */
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auto chrootStore = getDataDir() + "/nix/root";
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if (!pathExists(chrootStore)) {
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try {
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createDirs(chrootStore);
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} catch (Error & e) {
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return std::make_shared<LocalStore>(params);
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}
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warn("'%s' does not exist, so Nix will use '%s' as a chroot store", stateDir, chrootStore);
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} else
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debug("'%s' does not exist, so Nix will use '%s' as a chroot store", stateDir, chrootStore);
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return std::make_shared<LocalStore>("local", chrootStore, params);
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}
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}
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}
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catch (BadURL &) {
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auto [uri, uriParams] = splitUriAndParams(uri_);
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params.insert(uriParams.begin(), uriParams.end());
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#endif
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else
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return std::make_shared<LocalStore>(params);
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},
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[&](const StoreReference::Specified & g) {
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for (auto implem : *Implementations::registered)
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if (implem.uriSchemes.count(g.scheme))
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return implem.create(g.scheme, g.authority, params);
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if (auto store = openFromNonUri(uri, params)) {
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experimentalFeatureSettings.require(store->experimentalFeature());
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store->warnUnknownSettings();
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return ref<Store>(store);
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}
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}
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throw Error("don't know how to open Nix store with scheme '%s'", g.scheme);
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},
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}, storeURI.variant);
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throw Error("don't know how to open Nix store '%s'", uri_);
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experimentalFeatureSettings.require(store->experimentalFeature());
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store->warnUnknownSettings();
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store->init();
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return ref<Store> { store };
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}
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std::list<ref<Store>> getDefaultSubstituters()
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