src/core/locale-setup.c

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