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         zero(variables);
  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         if (!variables[VARIABLE_LANG]) {
 123                 variables[VARIABLE_LANG] = strdup("C");
 124                 if (!variables[VARIABLE_LANG]) {
 125                         r = -ENOMEM;
 126                         goto finish;
 127                 }
 128         }
 129
 130         for (i = 0; i < _VARIABLE_MAX; i++) {
 131                 if (variables[i]) {
 132                         if (setenv(variable_names[i], variables[i], 1) < 0) {
 133                                 r = -errno;
 134                                 goto finish;
 135                         }
 136                 } else
 137                         unsetenv(variable_names[i]);
 138         }
 139
 140         r = 0;
 141
 142 finish:
 143         for (i = 0; i < _VARIABLE_MAX; i++)
 144                 free(variables[i]);
 145
 146         return r;
 147 }