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
  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)
  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_ALTLINUX)
 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) || defined(TARGET_MAGEIA )
 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 }