commands/loadenv.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 loadenv: Restoring a environment
  24  */
  25
  26 #include <common.h>
  27 #include <command.h>
  28 #include <environment.h>
  29
  30 static int do_loadenv(struct command *cmdtp, int argc, char *argv[])
  31 {
  32         char *filename, *dirname;
  33
  34         if (argc < 3)
  35                 dirname = "/env";
  36         else
  37                 dirname = argv[2];
  38         if (argc < 2)
  39                 filename = "/dev/env0";
  40         else
  41                 filename = argv[1];
  42         printf("loading environment from %s\n", filename);
  43         return envfs_load(filename, dirname);
  44 }
  45
  46 static const __maybe_unused char cmd_loadenv_help[] =
  47 "Usage: loadenv [ENVFS] [DIRECTORY]\n"
  48 "Load the persistent storage contained in <envfs> to the directory\n"
  49 "<directory>.\n"
  50 "If ommitted <directory> defaults to /env and <envfs> defaults to /dev/env0.\n"
  51 "Note that envfs can only handle files. Directories are skipped silently.\n";
  52
  53 BAREBOX_CMD_START(loadenv)
  54         .cmd            = do_loadenv,
  55         .usage          = "load environment from persistent storage",
  56         BAREBOX_CMD_HELP(cmd_loadenv_help)
  57 BAREBOX_CMD_END
  58
  59 /**
  60  * @page loadenv_command loadenv
  61  *
  62  * Usage: loadenv [\<directory>] [\<envfs>]
  63  *
  64  * Load the persistent storage contained in \<envfs> to the directory \<directory>.
  65  *
  66  * If ommitted \<directory> defaults to \c /env and \<envfs> defaults to
  67  * \c /dev/env0.
  68  *
  69  * @note envfs can only handle files. Directories are skipped silently.
  70  */