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 #include "strv.h"
  32
  33 enum {
  34         /* We don't list LC_ALL here on purpose. People should be
  35          * using LANG instead. */
  36
  37         VARIABLE_LANG,
  38         VARIABLE_LANGUAGE,
  39         VARIABLE_LC_CTYPE,
  40         VARIABLE_LC_NUMERIC,
  41         VARIABLE_LC_TIME,
  42         VARIABLE_LC_COLLATE,
  43         VARIABLE_LC_MONETARY,
  44         VARIABLE_LC_MESSAGES,
  45         VARIABLE_LC_PAPER,
  46         VARIABLE_LC_NAME,
  47         VARIABLE_LC_ADDRESS,
  48         VARIABLE_LC_TELEPHONE,
  49         VARIABLE_LC_MEASUREMENT,
  50         VARIABLE_LC_IDENTIFICATION,
  51         _VARIABLE_MAX
  52 };
  53
  54 static const char * const variable_names[_VARIABLE_MAX] = {
  55         [VARIABLE_LANG] = "LANG",
  56         [VARIABLE_LANGUAGE] = "LANGUAGE",
  57         [VARIABLE_LC_CTYPE] = "LC_CTYPE",
  58         [VARIABLE_LC_NUMERIC] = "LC_NUMERIC",
  59         [VARIABLE_LC_TIME] = "LC_TIME",
  60         [VARIABLE_LC_COLLATE] = "LC_COLLATE",
  61         [VARIABLE_LC_MONETARY] = "LC_MONETARY",
  62         [VARIABLE_LC_MESSAGES] = "LC_MESSAGES",
  63         [VARIABLE_LC_PAPER] = "LC_PAPER",
  64         [VARIABLE_LC_NAME] = "LC_NAME",
  65         [VARIABLE_LC_ADDRESS] = "LC_ADDRESS",
  66         [VARIABLE_LC_TELEPHONE] = "LC_TELEPHONE",
  67         [VARIABLE_LC_MEASUREMENT] = "LC_MEASUREMENT",
  68         [VARIABLE_LC_IDENTIFICATION] = "LC_IDENTIFICATION"
  69 };
  70
  71 int locale_setup(char ***environment) {
  72         char **env;
  73         char *variables[_VARIABLE_MAX] = {};
  74         int r = 0, i;
  75
  76         if (detect_container(NULL) <= 0) {
  77                 r = parse_env_file("/proc/cmdline", WHITESPACE,
  78                                    "locale.LANG",              &variables[VARIABLE_LANG],
  79                                    "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  80                                    "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  81                                    "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  82                                    "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  83                                    "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  84                                    "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  85                                    "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  86                                    "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  87                                    "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  88                                    "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  89                                    "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  90                                    "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  91                                    "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  92                                    NULL);
  93
  94                 if (r < 0 && r != -ENOENT)
  95                         log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
  96         }
  97
  98         /* Hmm, nothing set on the kernel cmd line? Then let's
  99          * try /etc/locale.conf */
 100         if (r <= 0) {
 101                 r = parse_env_file("/etc/locale.conf", NEWLINE,
 102                                    "LANG",              &variables[VARIABLE_LANG],
 103                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
 104                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
 105                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
 106                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
 107                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
 108                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
 109                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
 110                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
 111                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
 112                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
 113                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
 114                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
 115                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
 116                                    NULL);
 117
 118                 if (r < 0 && r != -ENOENT)
 119                         log_warning("Failed to read /etc/locale.conf: %s", strerror(-r));
 120         }
 121
 122         for (i = 0; i < _VARIABLE_MAX; i++) {
 123                 if (!variables[i])
 124                         continue;
 125
 126                 env = strv_appendf(*environment, "%s=%s", variable_names[i], variables[i]);
 127                 if (!env) {
 128                         r = -ENOMEM;
 129                         goto finish;
 130                 }
 131
 132                 *environment = env;
 133         }
 134
 135         r = 0;
 136
 137 finish:
 138         for (i = 0; i < _VARIABLE_MAX; i++)
 139                 free(variables[i]);
 140
 141         return r;
 142 }