src/path/path.c

9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering/***
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  This file is part of systemd.
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  Copyright 2014 Lennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  systemd is free software; you can redistribute it and/or modify it
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  under the terms of the GNU Lesser General Public License as published by
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  (at your option) any later version.
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  systemd is distributed in the hope that it will be useful, but
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  Lesser General Public License for more details.
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  You should have received a copy of the GNU Lesser General Public License
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering***/
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering#include <errno.h>
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering#include <getopt.h>
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering#include <stdio.h>
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering#include <stdlib.h>
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering#include "sd-path.h"
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering
b5efdb8af40ea759a1ea584c1bc44ecc81dd00ceLennart Poettering#include "alloc-util.h"
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering#include "log.h"
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering#include "macro.h"
07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include "string-util.h"
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering#include "util.h"
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poetteringstatic const char *arg_suffix = NULL;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poetteringstatic const char* const path_table[_SD_PATH_MAX] = {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_TEMPORARY] = "temporary",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_TEMPORARY_LARGE] = "temporary-large",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_BINARIES] = "system-binaries",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_INCLUDE] = "system-include",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_LIBRARY_PRIVATE] = "system-library-private",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_LIBRARY_ARCH] = "system-library-arch",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_SHARED] = "system-shared",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_CONFIGURATION_FACTORY] = "system-configuration-factory",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_STATE_FACTORY] = "system-state-factory",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_CONFIGURATION] = "system-configuration",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_RUNTIME] = "system-runtime",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_RUNTIME_LOGS] = "system-runtime-logs",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_STATE_PRIVATE] = "system-state-private",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_STATE_LOGS] = "system-state-logs",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_STATE_CACHE] = "system-state-cache",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SYSTEM_STATE_SPOOL] = "system-state-spool",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_BINARIES] = "user-binaries",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_LIBRARY_PRIVATE] = "user-library-private",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_LIBRARY_ARCH] = "user-library-arch",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_SHARED] = "user-shared",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_CONFIGURATION] = "user-configuration",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_RUNTIME] = "user-runtime",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_STATE_CACHE] = "user-state-cache",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER] = "user",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_DOCUMENTS] = "user-documents",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_MUSIC] = "user-music",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_PICTURES] = "user-pictures",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_VIDEOS] = "user-videos",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_DOWNLOAD] = "user-download",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_PUBLIC] = "user-public",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_TEMPLATES] = "user-templates",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_USER_DESKTOP] = "user-desktop",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SEARCH_BINARIES] = "search-binaries",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SEARCH_LIBRARY_PRIVATE] = "search-library-private",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SEARCH_LIBRARY_ARCH] = "search-library-arch",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SEARCH_SHARED] = "search-shared",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SEARCH_CONFIGURATION_FACTORY] = "search-configuration-factory",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SEARCH_STATE_FACTORY] = "search-state-factory",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        [SD_PATH_SEARCH_CONFIGURATION] = "search-configuration",
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering};
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poetteringstatic int list_homes(void) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        uint64_t i = 0;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        int r = 0;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        for (i = 0; i < ELEMENTSOF(path_table); i++) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                _cleanup_free_ char *p = NULL;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                int q;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                q = sd_path_home(i, arg_suffix, &p);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                if (q == -ENXIO)
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        continue;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                if (q < 0) {
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt                        log_error_errno(r, "Failed to query %s: %m", path_table[i]);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        r = q;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        continue;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                }
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                printf("%s: %s\n", path_table[i], p);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        }
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        return r;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering}
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poetteringstatic int print_home(const char *n) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        uint64_t i = 0;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        int r;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        for (i = 0; i < ELEMENTSOF(path_table); i++) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                if (streq(path_table[i], n)) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        _cleanup_free_ char *p = NULL;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        r = sd_path_home(i, arg_suffix, &p);
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt                        if (r < 0)
f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt                                return log_error_errno(r, "Failed to query %s: %m", n);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        printf("%s\n", p);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        return 0;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                }
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        }
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        log_error("Path %s not known.", n);
15411c0cb1192799b37ec8f25d6f30e8d7292fc6David Herrmann        return -EOPNOTSUPP;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering}
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmekstatic void help(void) {
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek        printf("%s [OPTIONS...] [NAME...]\n\n"
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek               "Show system and user paths.\n\n"
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek               "  -h --help             Show this help\n"
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek               "     --version          Show package version\n"
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek               "     --suffix=SUFFIX    Suffix to append to paths\n",
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek               program_invocation_short_name);
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek}
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poetteringstatic int parse_argv(int argc, char *argv[]) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        enum {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                ARG_VERSION = 0x100,
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                ARG_SUFFIX,
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        };
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        static const struct option options[] = {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                { "help",      no_argument,       NULL, 'h'           },
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                { "version",   no_argument,       NULL, ARG_VERSION   },
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                { "suffix",    required_argument, NULL, ARG_SUFFIX    },
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                {}
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        };
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        int c;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        assert(argc >= 0);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        assert(argv);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek        while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                switch (c) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                case 'h':
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek                        help();
601185b43da638b1c74153deae01dbd518680889Zbigniew Jędrzejewski-Szmek                        return 0;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                case ARG_VERSION:
3f6fd1ba65f962702753c4ad284b588e59689a23Lennart Poettering                        return version();
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                case ARG_SUFFIX:
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        arg_suffix = optarg;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        break;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                case '?':
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        return -EINVAL;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                default:
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        assert_not_reached("Unhandled option");
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                }
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        return 1;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering}
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poetteringint main(int argc, char* argv[]) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        int r;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        log_parse_environment();
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        log_open();
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        r = parse_argv(argc, argv);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        if (r <= 0)
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                goto finish;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        if (argc > optind) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                int i, q;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                for (i = optind; i < argc; i++) {
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        q = print_home(argv[i]);
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                        if (q < 0)
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                                r = q;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                }
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        } else
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering                r = list_homes();
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poetteringfinish:
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
9a00f57a5ba7ed431e6bac8d8b36518708503b4eLennart Poettering}