commands/export.c

   1 /*
   2  * Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2
   9  * as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 /**
  22  * @file
  23  * @brief export: Export an environment variable
  24  */
  25
  26 #include <common.h>
  27 #include <command.h>
  28 #include <errno.h>
  29 #include <environment.h>
  30
  31 static int do_export(struct command *cmdtp, int argc, char *argv[])
  32 {
  33         int i = 1;
  34         char *ptr;
  35
  36         if (argc < 2)
  37                 return COMMAND_ERROR_USAGE;
  38
  39         while (i < argc) {
  40                 if ((ptr = strchr(argv[i], '='))) {
  41                         *ptr++ = 0;
  42                         setenv(argv[i], ptr);
  43                 }
  44                 if (export(argv[i])) {
  45                         printf("could not export: %s\n", argv[i]);
  46                         return 1;
  47                 }
  48                 i++;
  49         }
  50
  51         return 0;
  52 }
  53
  54 static const __maybe_unused char cmd_export_help[] =
  55 "Usage: export <var>[=value]...\n"
  56 "export an environment variable to subsequently executed scripts\n";
  57
  58 BAREBOX_CMD_START(export)
  59         .cmd            = do_export,
  60         .usage          = "export environment variables",
  61         BAREBOX_CMD_HELP(cmd_export_help)
  62 BAREBOX_CMD_END
  63
  64 /**
  65  * @page export_command export: Export an environment variable
  66  *
  67  * Usage: export \<var>[=value]...
  68  *
  69  * Export an environment variable to subsequently executed scripts.
  70  */