82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/*
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* (C) Copyright 2000-2008
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Command line user interface to firmware (=U-Boot) environment.
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*
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* Implements:
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* fw_printenv [[ -n name ] | [ name ... ]]
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* - prints the value of a single environment variable
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* "name", the ``name=value'' pairs of one or more
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* environment variables "name", or the whole
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* environment if no names are specified.
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* fw_setenv name [ value ... ]
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* - If a name without any values is given, the variable
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* with this name is deleted from the environment;
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* otherwise, all "value" arguments are concatenated,
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* separated by single blank characters, and the
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* resulting string is assigned to the environment
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* variable "name"
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "fw_env.h"
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#define CMD_PRINTENV "fw_printenv"
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#define CMD_SETENV "fw_setenv"
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int
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main(int argc, char *argv[])
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{
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char *p;
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char *cmdname = *argv;
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if ((p = strrchr (cmdname, '/')) != NULL) {
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cmdname = p + 1;
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}
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if (strcmp(cmdname, CMD_PRINTENV) == 0) {
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if (fw_printenv (argc, argv) != 0)
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return (EXIT_FAILURE);
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return (EXIT_SUCCESS);
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} else if (strcmp(cmdname, CMD_SETENV) == 0) {
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if (fw_setenv (argc, argv) != 0)
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return (EXIT_FAILURE);
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return (EXIT_SUCCESS);
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}
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fprintf (stderr,
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"Identity crisis - may be called as `" CMD_PRINTENV
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"' or as `" CMD_SETENV "' but not as `%s'\n",
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cmdname);
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return (EXIT_FAILURE);
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}
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