92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
/*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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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 modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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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, MA 02111-1307 USA
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*/
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/**
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* @file
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* @brief printenv: Print out environment variables
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*/
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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <environment.h>
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static int do_printenv (cmd_tbl_t *cmdtp, int argc, char *argv[])
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{
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struct variable_d *var;
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struct env_context *c, *current_c;
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if (argc == 2) {
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const char *val = getenv(argv[1]);
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if (val) {
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printf("%s=%s\n", argv[1], val);
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return 0;
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}
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printf("## Error: \"%s\" not defined\n", argv[1]);
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return -EINVAL;
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}
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current_c = get_current_context();
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var = current_c->local->next;
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printf("locals:\n");
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while (var) {
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printf("%s=%s\n", var_name(var), var_val(var));
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var = var->next;
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}
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printf("globals:\n");
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c = get_current_context();
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while(c) {
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var = c->global->next;
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while (var) {
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printf("%s=%s\n", var_name(var), var_val(var));
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var = var->next;
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}
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c = c->parent;
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}
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return 0;
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}
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static const __maybe_unused char cmd_printenv_help[] =
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"\n - print values of all environment variables\n"
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"printenv name ...\n"
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" - print value of environment variable 'name'\n";
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U_BOOT_CMD_START(printenv)
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.maxargs = CONFIG_MAXARGS,
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.cmd = do_printenv,
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.usage = "print environment variables",
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U_BOOT_CMD_HELP(cmd_printenv_help)
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U_BOOT_CMD_END
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/**
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* @page printenv_command printenv
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*
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* Usage: printenv [\<name>]
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*
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* Print environment variables.
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* If \<name> was given, it prints out its content if the environment variable
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* \<name> exists.
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*
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* Without the \<name> argument all current environment variables are printed.
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*/
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