src/core/locale-setup.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2010 Lennart Poettering
   6
   7   systemd is free software; you can redistribute it and/or modify it
   8   under the terms of the GNU Lesser General Public License as published by
   9   the Free Software Foundation; either version 2.1 of the License, or
  10   (at your option) any later version.
  11
  12   systemd is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   Lesser General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  19 ***/
  20
  21 #include <errno.h>
  22 #include <stdlib.h>
  23
  24 #include "env-util.h"
  25 #include "fileio.h"
  26 #include "locale-setup.h"
  27 #include "locale-util.h"
  28 #include "string-util.h"
  29 #include "strv.h"
  30 #include "util.h"
  31 #include "virt.h"
  32
  33 int locale_setup(char ***environment) {
  34         char **add;
  35         char *variables[_VARIABLE_LC_MAX] = {};
  36         int r = 0, i;
  37
  38         if (detect_container() <= 0) {
  39                 r = parse_env_file("/proc/cmdline", WHITESPACE,
  40                                    "locale.LANG",              &variables[VARIABLE_LANG],
  41                                    "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  42                                    "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  43                                    "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  44                                    "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  45                                    "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  46                                    "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  47                                    "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  48                                    "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  49                                    "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  50                                    "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  51                                    "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  52                                    "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  53                                    "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  54                                    NULL);
  55
  56                 if (r < 0 && r != -ENOENT)
  57                         log_warning_errno(r, "Failed to read /proc/cmdline: %m");
  58         }
  59
  60         /* Hmm, nothing set on the kernel cmd line? Then let's
  61          * try /etc/locale.conf */
  62         if (r <= 0) {
  63                 r = parse_env_file("/etc/locale.conf", NEWLINE,
  64                                    "LANG",              &variables[VARIABLE_LANG],
  65                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  66                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  67                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  68                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
  69                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  70                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  71                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  72                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  73                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
  74                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  75                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  76                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  77                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  78                                    NULL);
  79
  80                 if (r < 0 && r != -ENOENT)
  81                         log_warning_errno(r, "Failed to read /etc/locale.conf: %m");
  82         }
  83
  84         add = NULL;
  85         for (i = 0; i < _VARIABLE_LC_MAX; i++) {
  86                 char *s;
  87
  88                 if (!variables[i])
  89                         continue;
  90
  91                 s = strjoin(locale_variable_to_string(i), "=", variables[i]);
  92                 if (!s) {
  93                         r = -ENOMEM;
  94                         goto finish;
  95                 }
  96
  97                 if (strv_consume(&add, s) < 0) {
  98                         r = -ENOMEM;
  99                         goto finish;
 100                 }
 101         }
 102
 103         if (!strv_isempty(add)) {
 104                 char **e;
 105
 106                 e = strv_env_merge(2, *environment, add);
 107                 if (!e) {
 108                         r = -ENOMEM;
 109                         goto finish;
 110                 }
 111
 112                 strv_free(*environment);
 113                 *environment = e;
 114         }
 115
 116         r = 0;
 117
 118 finish:
 119         strv_free(add);
 120
 121         for (i = 0; i < _VARIABLE_LC_MAX; i++)
 122                 free(variables[i]);
 123
 124         return r;
 125 }