src/path/path.c

	path.c revision b5efdb8af40ea759a1ea584c1bc44ecc81dd00ce
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen/***
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  This file is part of systemd.
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  Copyright 2014 Lennart Poettering
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  systemd is free software; you can redistribute it and/or modify it
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  under the terms of the GNU Lesser General Public License as published by
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  the Free Software Foundation; either version 2.1 of the License, or
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  (at your option) any later version.
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  systemd is distributed in the hope that it will be useful, but
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  WITHOUT ANY WARRANTY; without even the implied warranty of
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  Lesser General Public License for more details.
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  You should have received a copy of the GNU Lesser General Public License
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen  along with systemd; If not, see <http://www.gnu.org/licenses/>.
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen***/
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include <errno.h>
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include <getopt.h>
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include <stdio.h>
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include <stdlib.h>
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include "sd-path.h"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include "alloc-util.h"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include "log.h"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include "macro.h"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include "string-util.h"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen#include "util.h"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersenstatic const char *arg_suffix = NULL;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersenstatic const char* const path_table[_SD_PATH_MAX] = {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_TEMPORARY] = "temporary",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_TEMPORARY_LARGE] = "temporary-large",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_BINARIES] = "system-binaries",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_INCLUDE] = "system-include",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_LIBRARY_PRIVATE] = "system-library-private",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_LIBRARY_ARCH] = "system-library-arch",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_SHARED] = "system-shared",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_CONFIGURATION_FACTORY] = "system-configuration-factory",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_STATE_FACTORY] = "system-state-factory",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_CONFIGURATION] = "system-configuration",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_RUNTIME] = "system-runtime",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_RUNTIME_LOGS] = "system-runtime-logs",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_STATE_PRIVATE] = "system-state-private",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_STATE_LOGS] = "system-state-logs",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_STATE_CACHE] = "system-state-cache",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SYSTEM_STATE_SPOOL] = "system-state-spool",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_BINARIES] = "user-binaries",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_LIBRARY_PRIVATE] = "user-library-private",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_LIBRARY_ARCH] = "user-library-arch",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_SHARED] = "user-shared",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_CONFIGURATION] = "user-configuration",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_RUNTIME] = "user-runtime",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_STATE_CACHE] = "user-state-cache",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER] = "user",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_DOCUMENTS] = "user-documents",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_MUSIC] = "user-music",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_PICTURES] = "user-pictures",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_VIDEOS] = "user-videos",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_DOWNLOAD] = "user-download",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_PUBLIC] = "user-public",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_TEMPLATES] = "user-templates",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_USER_DESKTOP] = "user-desktop",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SEARCH_BINARIES] = "search-binaries",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SEARCH_LIBRARY_PRIVATE] = "search-library-private",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SEARCH_LIBRARY_ARCH] = "search-library-arch",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SEARCH_SHARED] = "search-shared",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SEARCH_CONFIGURATION_FACTORY] = "search-configuration-factory",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SEARCH_STATE_FACTORY] = "search-state-factory",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        [SD_PATH_SEARCH_CONFIGURATION] = "search-configuration",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen};
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersenstatic int list_homes(void) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        uint64_t i = 0;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        int r = 0;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        for (i = 0; i < ELEMENTSOF(path_table); i++) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                _cleanup_free_ char *p = NULL;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                int q;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                q = sd_path_home(i, arg_suffix, &p);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                if (q == -ENXIO)
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        continue;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                if (q < 0) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        log_error_errno(r, "Failed to query %s: %m", path_table[i]);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        r = q;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        continue;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                }
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                printf("%s: %s\n", path_table[i], p);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        }
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        return r;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen}
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersenstatic int print_home(const char *n) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        uint64_t i = 0;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        int r;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        for (i = 0; i < ELEMENTSOF(path_table); i++) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                if (streq(path_table[i], n)) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        _cleanup_free_ char *p = NULL;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        r = sd_path_home(i, arg_suffix, &p);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        if (r < 0)
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                                return log_error_errno(r, "Failed to query %s: %m", n);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        printf("%s\n", p);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                        return 0;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                }
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        }
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        log_error("Path %s not known.", n);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        return -EOPNOTSUPP;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen}
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersenstatic void help(void) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        printf("%s [OPTIONS...] [NAME...]\n\n"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen               "Show system and user paths.\n\n"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen               "  -h --help             Show this help\n"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen               "     --version          Show package version\n"
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen               "     --suffix=SUFFIX    Suffix to append to paths\n",
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen               program_invocation_short_name);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen}
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersenstatic int parse_argv(int argc, char *argv[]) {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        enum {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                ARG_VERSION = 0x100,
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                ARG_SUFFIX,
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        };
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        static const struct option options[] = {
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                { "help",      no_argument,       NULL, 'h'           },
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                { "version",   no_argument,       NULL, ARG_VERSION   },
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                { "suffix",    required_argument, NULL, ARG_SUFFIX    },
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                {}
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        };
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        int c;
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        assert(argc >= 0);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        assert(argv);
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen
996d16975b4d802335188a3be2bbc3635c1287f3Tom Gundersen                switch (c) {

                case 'h':
                        help();
                        return 0;

                case ARG_VERSION:
                        return version();

                case ARG_SUFFIX:
                        arg_suffix = optarg;
                        break;

                case '?':
                        return -EINVAL;

                default:
                        assert_not_reached("Unhandled option");
                }

        return 1;
}

int main(int argc, char* argv[]) {
        int r;

        log_parse_environment();
        log_open();

        r = parse_argv(argc, argv);
        if (r <= 0)
                goto finish;

        if (argc > optind) {
                int i, q;

                for (i = optind; i < argc; i++) {
                        q = print_home(argv[i]);
                        if (q < 0)
                                r = q;
                }
        } else
                r = list_homes();


finish:
        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}