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
   8 #include <errno.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 #include "env-util.h"
  13 #include "fileio.h"
  14 #include "locale-setup.h"
  15 #include "locale-util.h"
  16 #include "string-util.h"
  17 #include "strv.h"
  18 #include "util.h"
  19 #include "virt.h"
  20
  21 int locale_setup(char ***environment) {
  22         char **add;
  23         char *variables[_VARIABLE_LC_MAX] = {};
  24         int r = 0, i;
  25
  26         if (detect_container() <= 0) {
  27                 r = parse_env_file(NULL, "/proc/cmdline", WHITESPACE,
  28                                    "locale.LANG",              &variables[VARIABLE_LANG],
  29                                    "locale.LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  30                                    "locale.LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  31                                    "locale.LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  32                                    "locale.LC_TIME",           &variables[VARIABLE_LC_TIME],
  33                                    "locale.LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  34                                    "locale.LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  35                                    "locale.LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  36                                    "locale.LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  37                                    "locale.LC_NAME",           &variables[VARIABLE_LC_NAME],
  38                                    "locale.LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  39                                    "locale.LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  40                                    "locale.LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  41                                    "locale.LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  42                                    NULL);
  43
  44                 if (r < 0 && r != -ENOENT)
  45                         log_warning_errno(r, "Failed to read /proc/cmdline: %m");
  46         }
  47
  48         /* Hmm, nothing set on the kernel cmd line? Then let's
  49          * try /etc/locale.conf */
  50         if (r <= 0) {
  51                 r = parse_env_file(NULL, "/etc/locale.conf", NEWLINE,
  52                                    "LANG",              &variables[VARIABLE_LANG],
  53                                    "LANGUAGE",          &variables[VARIABLE_LANGUAGE],
  54                                    "LC_CTYPE",          &variables[VARIABLE_LC_CTYPE],
  55                                    "LC_NUMERIC",        &variables[VARIABLE_LC_NUMERIC],
  56                                    "LC_TIME",           &variables[VARIABLE_LC_TIME],
  57                                    "LC_COLLATE",        &variables[VARIABLE_LC_COLLATE],
  58                                    "LC_MONETARY",       &variables[VARIABLE_LC_MONETARY],
  59                                    "LC_MESSAGES",       &variables[VARIABLE_LC_MESSAGES],
  60                                    "LC_PAPER",          &variables[VARIABLE_LC_PAPER],
  61                                    "LC_NAME",           &variables[VARIABLE_LC_NAME],
  62                                    "LC_ADDRESS",        &variables[VARIABLE_LC_ADDRESS],
  63                                    "LC_TELEPHONE",      &variables[VARIABLE_LC_TELEPHONE],
  64                                    "LC_MEASUREMENT",    &variables[VARIABLE_LC_MEASUREMENT],
  65                                    "LC_IDENTIFICATION", &variables[VARIABLE_LC_IDENTIFICATION],
  66                                    NULL);
  67
  68                 if (r < 0 && r != -ENOENT)
  69                         log_warning_errno(r, "Failed to read /etc/locale.conf: %m");
  70         }
  71
  72         add = NULL;
  73         for (i = 0; i < _VARIABLE_LC_MAX; i++) {
  74                 char *s;
  75
  76                 if (!variables[i])
  77                         continue;
  78
  79                 s = strjoin(locale_variable_to_string(i), "=", variables[i]);
  80                 if (!s) {
  81                         r = -ENOMEM;
  82                         goto finish;
  83                 }
  84
  85                 if (strv_consume(&add, s) < 0) {
  86                         r = -ENOMEM;
  87                         goto finish;
  88                 }
  89         }
  90
  91         if (!strv_isempty(add)) {
  92                 char **e;
  93
  94                 e = strv_env_merge(2, *environment, add);
  95                 if (!e) {
  96                         r = -ENOMEM;
  97                         goto finish;
  98                 }
  99
 100                 strv_free_and_replace(*environment, e);
 101         }
 102
 103         r = 0;
 104
 105 finish:
 106         strv_free(add);
 107
 108         for (i = 0; i < _VARIABLE_LC_MAX; i++)
 109                 free(variables[i]);
 110
 111         return r;
 112 }