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 <errno.h>
  23 #include <stdlib.h>
  24
  25 #include "env-util.h"
  26 #include "fileio.h"
  27 #include "locale-setup.h"
  28 #include "locale-util.h"
  29 #include "string-util.h"
  30 #include "strv.h"
  31 #include "util.h"
  32 #include "virt.h"
  33
  34 int locale_setup(char ***environment) {
  35         char **add;
  36         char *variables[_VARIABLE_LC_MAX] = {};
  37         int r = 0, i;
  38
  39         if (detect_container() <= 0) {
  40                 r = parse_env_file("/proc/cmdline", WHITESPACE,
  41                                    "locale.LANG",              &variables[VARIABLE_LANG],
  42                                    "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  43                                    "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  44                                    "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  45                                    "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  46                                    "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  47                                    "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  48                                    "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  49                                    "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  50                                    "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  51                                    "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  52                                    "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  53                                    "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  54                                    "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  55                                    NULL);
  56
  57                 if (r < 0 && r != -ENOENT)
  58                         log_warning_errno(r, "Failed to read /proc/cmdline: %m");
  59         }
  60
  61         /* Hmm, nothing set on the kernel cmd line? Then let's
  62          * try /etc/locale.conf */
  63         if (r <= 0) {
  64                 r = parse_env_file("/etc/locale.conf", NEWLINE,
  65                                    "LANG",              &variables[VARIABLE_LANG],
  66                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  67                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  68                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  69                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
  70                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  71                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  72                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  73                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  74                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
  75                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  76                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  77                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  78                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  79                                    NULL);
  80
  81                 if (r < 0 && r != -ENOENT)
  82                         log_warning_errno(r, "Failed to read /etc/locale.conf: %m");
  83         }
  84
  85         add = NULL;
  86         for (i = 0; i < _VARIABLE_LC_MAX; i++) {
  87                 char *s;
  88
  89                 if (!variables[i])
  90                         continue;
  91
  92                 s = strjoin(locale_variable_to_string(i), "=", variables[i], NULL);
  93                 if (!s) {
  94                         r = -ENOMEM;
  95                         goto finish;
  96                 }
  97
  98                 if (strv_consume(&add, s) < 0) {
  99                         r = -ENOMEM;
 100                         goto finish;
 101                 }
 102         }
 103
 104         if (!strv_isempty(add)) {
 105                 char **e;
 106
 107                 e = strv_env_merge(2, *environment, add);
 108                 if (!e) {
 109                         r = -ENOMEM;
 110                         goto finish;
 111                 }
 112
 113                 strv_free(*environment);
 114                 *environment = e;
 115         }
 116
 117         r = 0;
 118
 119 finish:
 120         strv_free(add);
 121
 122         for (i = 0; i < _VARIABLE_LC_MAX; i++)
 123                 free(variables[i]);
 124
 125         return r;
 126 }