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Diffstat (limited to 'nix/guix-register/guix-register.cc')
| -rw-r--r-- | nix/guix-register/guix-register.cc | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/nix/guix-register/guix-register.cc b/nix/guix-register/guix-register.cc deleted file mode 100644 index 16dae62b3d..0000000000 --- a/nix/guix-register/guix-register.cc +++ /dev/null @@ -1,254 +0,0 @@ -/* GNU Guix --- Functional package management for GNU - Copyright (C) 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org> - Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, - 2013 Eelco Dolstra <eelco.dolstra@logicblox.com> - - This file is part of GNU Guix. - - GNU Guix is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or (at - your option) any later version. - - GNU Guix is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. */ - -/* This file derives from the implementation of 'nix-store - --register-validity', by Eelco Dolstra, as found in the Nix package - manager's src/nix-store/nix-store.cc. */ - -#include <config.h> - -#include <globals.hh> -#include <local-store.hh> - -#include <iostream> -#include <fstream> -#include <cstdlib> -#include <cstdio> - -#include <argp.h> -#include <gcrypt.h> - -using namespace nix; - -/* Input stream where we read closure descriptions. */ -static std::istream *input = &std::cin; - - - -/* Command-line options. */ - -const char *argp_program_version = - "guix-register (" PACKAGE_NAME ") " PACKAGE_VERSION; -const char *argp_program_bug_address = PACKAGE_BUGREPORT; - -static char doc[] = -"guix-register -- register a closure as valid in a store\ -\v\ -This program is used internally when populating a store with data \ -from an existing store. It updates the new store's database with \ -information about which store files are valid, and what their \ -references are."; - -#define GUIX_OPT_STATE_DIRECTORY 1 -#define GUIX_OPT_DEDUPLICATE 2 - -static const struct argp_option options[] = - { - { "prefix", 'p', "DIRECTORY", 0, - "Open the store that lies under DIRECTORY" }, - { "state-directory", GUIX_OPT_STATE_DIRECTORY, "DIRECTORY", 0, - "Use DIRECTORY as the state directory of the target store" }, - { "no-deduplication", GUIX_OPT_DEDUPLICATE, 0, 0, - "Disable automatic deduplication of registered store items" }, - { 0, 0, 0, 0, 0 } - }; - - -/* Prefix of the store being populated. */ -static std::string prefix; - -/* Whether to deduplicate the registered store items. */ -static bool deduplication = true; - -/* Parse a single option. */ -static error_t -parse_opt (int key, char *arg, struct argp_state *state) -{ - switch (key) - { - case 'p': - { - prefix = canonPath (arg); - settings.nixStore = prefix + NIX_STORE_DIR; - settings.nixDataDir = prefix + NIX_DATA_DIR; - settings.nixLogDir = prefix + NIX_LOG_DIR; - settings.nixStateDir = prefix + NIX_STATE_DIR; - settings.nixDBPath = settings.nixStateDir + "/db"; - break; - } - - case GUIX_OPT_STATE_DIRECTORY: - { - string state_dir = canonPath (arg); - - settings.nixStateDir = state_dir; - settings.nixDBPath = state_dir + "/db"; - break; - } - - case GUIX_OPT_DEDUPLICATE: - deduplication = false; - break; - - case ARGP_KEY_ARG: - { - std::ifstream *file; - - if (state->arg_num >= 2) - /* Too many arguments. */ - argp_usage (state); - - file = new std::ifstream (); - file->open (arg); - - input = file; - } - break; - - default: - return (error_t) ARGP_ERR_UNKNOWN; - } - - return (error_t) 0; -} - -/* Argument parsing. */ -static struct argp argp = { options, parse_opt, 0, doc }; - - -/* Read from INPUT the description of a closure, and register it as valid in - STORE. The expected format on INPUT is that used by #:references-graphs: - - FILE - DERIVER - NUMBER-OF-REFERENCES - REF1 - ... - REFN - - This is really meant as an internal format. */ -static void -register_validity (LocalStore *store, std::istream &input, - bool optimize = true, - bool reregister = true, bool hashGiven = false, - bool canonicalise = true) -{ - ValidPathInfos infos; - - while (1) - { - ValidPathInfo info = decodeValidPathInfo (input, hashGiven); - if (info.path == "") - break; - - if (!prefix.empty ()) - { - /* Rewrite the input to refer to the final name, as if we were in a - chroot under PREFIX. */ - std::string final_prefix (NIX_STORE_DIR "/"); - info.path = final_prefix + baseNameOf (info.path); - } - - /* Keep its real path to canonicalize it and compute its hash. */ - std::string real_path; - real_path = prefix + "/" + settings.nixStore + "/" + baseNameOf (info.path); - - if (!store->isValidPath (info.path) || reregister) - { - /* !!! races */ - if (canonicalise) - canonicalisePathMetaData (real_path, -1); - - if (!hashGiven) - { - HashResult hash = hashPath (htSHA256, real_path); - info.hash = hash.first; - info.narSize = hash.second; - } - infos.push_back (info); - } - } - - store->registerValidPaths (infos); - - /* XXX: When PREFIX is non-empty, store->linksDir points to the original - store's '.links' directory, which means 'optimisePath' would try to link - to that instead of linking to the target store. Thus, disable - deduplication in this case. */ - if (optimize) - { - /* Make sure deduplication is enabled. */ - settings.autoOptimiseStore = true; - - std::string store_dir = settings.nixStore; - - /* 'optimisePath' creates temporary links under 'settings.nixStore' and - this must be the real target store, under PREFIX, to avoid - cross-device links. Thus, temporarily switch the value of - 'settings.nixStore'. */ - settings.nixStore = prefix + store_dir; - for (auto&& i: infos) - store->optimisePath (prefix + i.path); - settings.nixStore = store_dir; - } -} - - -int -main (int argc, char *argv[]) -{ - /* Initialize libgcrypt, which is indirectly used. */ - if (!gcry_check_version (GCRYPT_VERSION)) - { - fprintf (stderr, "error: libgcrypt version mismatch\n"); - exit (EXIT_FAILURE); - } - - /* Tell Libgcrypt that initialization has completed, as per the Libgcrypt - 1.6.0 manual (although this does not appear to be strictly needed.) */ - gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0); - - /* Honor the environment variables, and initialize the settings. */ - settings.processEnvironment (); - - try - { - argp_parse (&argp, argc, argv, 0, 0, 0); - - /* Instantiate the store. This creates any missing directories among - 'settings.nixStore', 'settings.nixDBPath', etc. */ - LocalStore store; - - if (!prefix.empty ()) - /* Under the --prefix tree, the final name of the store will be - NIX_STORE_DIR. Set it here so that the database uses file names - prefixed by NIX_STORE_DIR and not PREFIX + NIX_STORE_DIR. */ - settings.nixStore = NIX_STORE_DIR; - - register_validity (&store, *input, deduplication); - } - catch (std::exception &e) - { - fprintf (stderr, "error: %s\n", e.what ()); - return EXIT_FAILURE; - } - - return EXIT_SUCCESS; -} |