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/*
* (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"
#define CMD_GETENV "fw_getenv"
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);
} else if (strcmp(cmdname, CMD_GETENV) == 0) {
if (argc > 1) {
while (--argc) {
char *val = fw_getenv(argv[argc]);
if (val)
printf("%s\n", val);
else
fprintf(stderr, "%s: no such variable in environment\n", argv[argc]);
}
}
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);
}
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