src/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 General Public License as published by
  10   the Free Software Foundation; either version 2 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   General Public License for more details.
  17
  18   You should have received a copy of the GNU 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
  31 enum {
  32         /* We don't list LC_ALL here on purpose. People should be
  33          * using LANG instead. */
  34
  35         VARIABLE_LANG,
  36         VARIABLE_LANGUAGE,
  37         VARIABLE_LC_CTYPE,
  38         VARIABLE_LC_NUMERIC,
  39         VARIABLE_LC_TIME,
  40         VARIABLE_LC_COLLATE,
  41         VARIABLE_LC_MONETARY,
  42         VARIABLE_LC_MESSAGES,
  43         VARIABLE_LC_PAPER,
  44         VARIABLE_LC_NAME,
  45         VARIABLE_LC_ADDRESS,
  46         VARIABLE_LC_TELEPHONE,
  47         VARIABLE_LC_MEASUREMENT,
  48         VARIABLE_LC_IDENTIFICATION,
  49         _VARIABLE_MAX
  50 };
  51
  52 static const char * const variable_names[_VARIABLE_MAX] = {
  53         [VARIABLE_LANG] = "LANG",
  54         [VARIABLE_LANGUAGE] = "LANGUAGE",
  55         [VARIABLE_LC_CTYPE] = "LC_CTYPE",
  56         [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
  57         [VARIABLE_LC_TIME] = "LC_TIME",
  58         [VARIABLE_LC_COLLATE] = "LC_COLLATE",
  59         [VARIABLE_LC_MONETARY] = "LC_MONETARY",
  60         [VARIABLE_LC_MESSAGES] = "LC_MESSAGES",
  61         [VARIABLE_LC_PAPER] = "LC_PAPER",
  62         [VARIABLE_LC_NAME] = "LC_NAME",
  63         [VARIABLE_LC_ADDRESS] = "LC_ADDRESS",
  64         [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE",
  65         [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT",
  66         [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
  67 };
  68
  69 int locale_setup(void) {
  70         char *variables[_VARIABLE_MAX];
  71         int r = 0, i;
  72
  73         zero(variables);
  74
  75         if (detect_container(NULL) <= 0)
  76                 if ((r = parse_env_file("/proc/cmdline", WHITESPACE,
  77 #if defined(TARGET_FEDORA) || defined(TARGET_MEEGO)
  78                                         "LANG",                     &variables[VARIABLE_LANG],
  79 #endif
  80                                         "locale.LANG",              &variables[VARIABLE_LANG],
  81                                         "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  82                                         "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  83                                         "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  84                                         "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  85                                         "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  86                                         "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  87                                         "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  88                                         "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  89                                         "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  90                                         "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  91                                         "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  92                                         "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  93                                         "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  94                                         NULL)) < 0) {
  95
  96                         if (r != -ENOENT)
  97                                 log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
  98                 }
  99
 100         /* Hmm, nothing set on the kernel cmd line? Then let's
 101          * try /etc/locale.conf */
 102         if (r <= 0 &&
 103             (r = parse_env_file("/etc/locale.conf", NEWLINE,
 104                                "LANG",              &variables[VARIABLE_LANG],
 105                                "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
 106                                "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 107                                "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 108                                "LC_TIME",           &variables[VARIABLE_LC_TIME],
 109                                "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 110                                "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 111                                "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 112                                "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 113                                "LC_NAME",           &variables[VARIABLE_LC_NAME],
 114                                "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 115                                "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 116                                "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 117                                "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 118                                 NULL)) < 0) {
 119
 120                 if (r != -ENOENT)
 121                         log_warning("Failed to read /etc/locale.conf: %s", strerror(-r));
 122         }
 123
 124 #if defined(TARGET_FEDORA) || defined(TARGET_ALTLINUX) || defined(TARGET_MEEGO)
 125         if (r <= 0 &&
 126             (r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
 127                                 "LANG", &variables[VARIABLE_LANG],
 128                                 NULL)) < 0) {
 129
 130                 if (r != -ENOENT)
 131                         log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
 132         }
 133
 134 #elif defined(TARGET_SUSE)
 135         if (r <= 0 &&
 136             (r = parse_env_file("/etc/sysconfig/language", NEWLINE,
 137                                 "RC_LANG", &variables[VARIABLE_LANG],
 138                                 NULL)) < 0) {
 139
 140                 if (r != -ENOENT)
 141                         log_warning("Failed to read /etc/sysconfig/language: %s", strerror(-r));
 142         }
 143
 144 #elif defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
 145         if (r <= 0 &&
 146             (r = parse_env_file("/etc/default/locale", NEWLINE,
 147                                 "LANG",              &variables[VARIABLE_LANG],
 148                                 "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 149                                 "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 150                                 "LC_TIME",           &variables[VARIABLE_LC_TIME],
 151                                 "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 152                                 "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 153                                 "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 154                                 "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 155                                 "LC_NAME",           &variables[VARIABLE_LC_NAME],
 156                                 "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 157                                 "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 158                                 "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 159                                 "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 160                                 NULL)) < 0) {
 161
 162                 if (r != -ENOENT)
 163                         log_warning("Failed to read /etc/default/locale: %s", strerror(-r));
 164         }
 165
 166 #elif defined(TARGET_ARCH)
 167         if (r <= 0 &&
 168             (r = parse_env_file("/etc/rc.conf", NEWLINE,
 169                                 "LOCALE", &variables[VARIABLE_LANG],
 170                                 NULL)) < 0) {
 171
 172                 if (r != -ENOENT)
 173                         log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
 174         }
 175
 176 #elif defined(TARGET_GENTOO)
 177         /* Gentoo's openrc expects locale variables in /etc/env.d/
 178          * These files are later compiled by env-update into shell
 179          * export commands at /etc/profile.env, with variables being
 180          * exported by openrc's runscript (so /etc/init.d/)
 181          */
 182         if (r <= 0 &&
 183             (r = parse_env_file("/etc/profile.env", NEWLINE,
 184                                 "export LANG",              &variables[VARIABLE_LANG],
 185                                 "export LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 186                                 "export LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 187                                 "export LC_TIME",           &variables[VARIABLE_LC_TIME],
 188                                 "export LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 189                                 "export LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 190                                 "export LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 191                                 "export LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 192                                 "export LC_NAME",           &variables[VARIABLE_LC_NAME],
 193                                 "export LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 194                                 "export LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 195                                 "export LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 196                                 "export LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 197                                 NULL)) < 0) {
 198
 199                 if (r != -ENOENT)
 200                         log_warning("Failed to read /etc/profile.env: %s", strerror(-r));
 201         }
 202 #elif defined(TARGET_MANDRIVA)
 203         if (r <= 0 &&
 204             (r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
 205                                 "LANG",              &variables[VARIABLE_LANG],
 206                                 "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 207                                 "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 208                                 "LC_TIME",           &variables[VARIABLE_LC_TIME],
 209                                 "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 210                                 "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 211                                 "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 212                                 "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 213                                 "LC_NAME",           &variables[VARIABLE_LC_NAME],
 214                                 "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 215                                 "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 216                                 "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 217                                 "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 218                                 NULL)) < 0) {
 219
 220                 if (r != -ENOENT)
 221                         log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
 222         }
 223
 224 #endif
 225
 226         if (!variables[VARIABLE_LANG]) {
 227                 if (!(variables[VARIABLE_LANG] = strdup("C"))) {
 228                         r = -ENOMEM;
 229                         goto finish;
 230                 }
 231         }
 232
 233         for (i = 0; i < _VARIABLE_MAX; i++) {
 234
 235                 if (variables[i]) {
 236                         if (setenv(variable_names[i], variables[i], 1) < 0) {
 237                                 r = -errno;
 238                                 goto finish;
 239                         }
 240                 } else
 241                         unsetenv(variable_names[i]);
 242         }
 243
 244         r = 0;
 245
 246 finish:
 247         for (i = 0; i < _VARIABLE_MAX; i++)
 248                 free(variables[i]);
 249
 250         return r;
 251 }