Logo Search packages:      
Sourcecode: uboot-envtools version File versions  Download package

fw_env_main.c

/*
 * (C) Copyright 2000-2008
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.      See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

/*
 * Command line user interface to firmware (=U-Boot) environment.
 *
 * Implements:
 *    fw_printenv [[ -n name ] | [ name ... ]]
 *              - prints the value of a single environment variable
 *                "name", the ``name=value'' pairs of one or more
 *                environment variables "name", or the whole
 *                environment if no names are specified.
 *    fw_setenv name [ value ... ]
 *          - If a name without any values is given, the variable
 *            with this name is deleted from the environment;
 *            otherwise, all "value" arguments are concatenated,
 *            separated by single blank characters, and the
 *            resulting string is assigned to the environment
 *            variable "name"
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "fw_env.h"

#define     CMD_PRINTENV      "fw_printenv"
#define CMD_SETENV      "fw_setenv"

int
main(int argc, char *argv[])
{
      char *p;
      char *cmdname = *argv;

      if ((p = strrchr (cmdname, '/')) != NULL) {
            cmdname = p + 1;
      }

      if (strcmp(cmdname, CMD_PRINTENV) == 0) {

            if (fw_printenv (argc, argv) != 0)
                  return (EXIT_FAILURE);

            return (EXIT_SUCCESS);

      } else if (strcmp(cmdname, CMD_SETENV) == 0) {

            if (fw_setenv (argc, argv) != 0)
                  return (EXIT_FAILURE);

            return (EXIT_SUCCESS);

      }

      fprintf (stderr,
            "Identity crisis - may be called as `" CMD_PRINTENV
            "' or as `" CMD_SETENV "' but not as `%s'\n",
            cmdname);
      return (EXIT_FAILURE);
}

Generated by  Doxygen 1.6.0   Back to index