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107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* env implementation for busybox
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*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 GNU
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* 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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* Original copyright notice is retained at the end of this file.
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*
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* Modified for BusyBox by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
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*/
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#include <stdio.h>
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#include <string.h>
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#include <getopt.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "busybox.h"
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extern int env_main(int argc, char** argv)
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{
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char **ep, *p;
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char *cleanenv[1];
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int ignore_environment = 0;
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int ch;
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while ((ch = getopt(argc, argv, "+iu:")) != -1) {
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switch(ch) {
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case 'i':
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ignore_environment = 1;
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break;
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case 'u':
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unsetenv(optarg);
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break;
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default:
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show_usage();
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}
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}
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if (optind != argc && !strcmp(argv[optind], "-")) {
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ignore_environment = 1;
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argv++;
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}
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if (ignore_environment) {
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environ = cleanenv;
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cleanenv[0] = NULL;
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}
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for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv)
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if (putenv(*argv) < 0)
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perror_msg_and_die("%s", *argv);
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if (*argv) {
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execvp(*argv, argv);
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perror_msg_and_die("%s", *argv);
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}
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for (ep = environ; *ep; ep++)
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puts(*ep);
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return 0;
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}
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/*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
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* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
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*
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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