src/core/locale-setup.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <string.h>
  23 #include <stdlib.h>
  24 #include <errno.h>
  25
  26 #include "locale-setup.h"
  27 #include "util.h"
  28 #include "macro.h"
  29 #include "virt.h"
  30 #include "fileio.h"
  31
  32 enum {
  33         /* We don't list LC_ALL here on purpose. People should be
  34          * using LANG instead. */
  35
  36         VARIABLE_LANG,
  37         VARIABLE_LANGUAGE,
  38         VARIABLE_LC_CTYPE,
  39         VARIABLE_LC_NUMERIC,
  40         VARIABLE_LC_TIME,
  41         VARIABLE_LC_COLLATE,
  42         VARIABLE_LC_MONETARY,
  43         VARIABLE_LC_MESSAGES,
  44         VARIABLE_LC_PAPER,
  45         VARIABLE_LC_NAME,
  46         VARIABLE_LC_ADDRESS,
  47         VARIABLE_LC_TELEPHONE,
  48         VARIABLE_LC_MEASUREMENT,
  49         VARIABLE_LC_IDENTIFICATION,
  50         _VARIABLE_MAX
  51 };
  52
  53 static const char * const variable_names[_VARIABLE_MAX] = {
  54         [VARIABLE_LANG] = "LANG",
  55         [VARIABLE_LANGUAGE] = "LANGUAGE",
  56         [VARIABLE_LC_CTYPE] = "LC_CTYPE",
  57         [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
  58         [VARIABLE_LC_TIME] = "LC_TIME",
  59         [VARIABLE_LC_COLLATE] = "LC_COLLATE",
  60         [VARIABLE_LC_MONETARY] = "LC_MONETARY",
  61         [VARIABLE_LC_MESSAGES] = "LC_MESSAGES",
  62         [VARIABLE_LC_PAPER] = "LC_PAPER",
  63         [VARIABLE_LC_NAME] = "LC_NAME",
  64         [VARIABLE_LC_ADDRESS] = "LC_ADDRESS",
  65         [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE",
  66         [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT",
  67         [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
  68 };
  69
  70 int locale_setup(void) {
  71         char *variables[_VARIABLE_MAX] = {};
  72         int r = 0, i;
  73
  74         if (detect_container(NULL) <= 0) {
  75                 r = parse_env_file("/proc/cmdline", WHITESPACE,
  76                                    "locale.LANG",              &variables[VARIABLE_LANG],
  77                                    "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  78                                    "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  79                                    "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  80                                    "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  81                                    "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  82                                    "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  83                                    "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  84                                    "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  85                                    "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  86                                    "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  87                                    "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  88                                    "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  89                                    "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  90                                    NULL);
  91
  92                 if (r < 0 && r != -ENOENT)
  93                         log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
  94         }
  95
  96         /* Hmm, nothing set on the kernel cmd line? Then let's
  97          * try /etc/locale.conf */
  98         if (r <= 0) {
  99                 r = parse_env_file("/etc/locale.conf", NEWLINE,
 100                                    "LANG",              &variables[VARIABLE_LANG],
 101                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
 102                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 103                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 104                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
 105                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 106                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 107                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 108                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 109                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
 110                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 111                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 112                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 113                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 114                                    NULL);
 115
 116                 if (r < 0 && r != -ENOENT)
 117                         log_warning("Failed to read /etc/locale.conf: %s", strerror(-r));
 118         }
 119
 120         if (!variables[VARIABLE_LANG]) {
 121                 variables[VARIABLE_LANG] = strdup("C");
 122                 if (!variables[VARIABLE_LANG]) {
 123                         r = -ENOMEM;
 124                         goto finish;
 125                 }
 126         }
 127
 128         for (i = 0; i < _VARIABLE_MAX; i++) {
 129                 if (variables[i]) {
 130                         if (setenv(variable_names[i], variables[i], 1) < 0) {
 131                                 r = -errno;
 132                                 goto finish;
 133                         }
 134                 } else
 135                         unsetenv(variable_names[i]);
 136         }
 137
 138         r = 0;
 139
 140 finish:
 141         for (i = 0; i < _VARIABLE_MAX; i++)
 142                 free(variables[i]);
 143
 144         return r;
 145 }