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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
*/
/*
* Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
* All Rights Reserved
*/
/*
* env [ - ] [ name=value ]... [command arg...]
* set environment, then execute command (or print environment)
* - says start fresh, otherwise merge with inherited environment
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <limits.h>
#include <ctype.h>
#include <locale.h>
#include <string.h>
#include <unistd.h>
static void Usage();
extern char **environ;
int
main(int argc, char **argv)
{
char **p;
int opt;
int i;
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
#endif
(void) textdomain(TEXT_DOMAIN);
/* check for non-standard "-" option */
if ((argc > 1) && (strcmp(argv[1], "-")) == 0) {
(void) clearenv();
for (i = 1; i < argc; i++)
argv[i] = argv[i+1];
argc--;
}
/* get options */
while ((opt = getopt(argc, argv, "i")) != EOF) {
switch (opt) {
case 'i':
(void) clearenv();
break;
default:
Usage();
}
}
/* get environment strings */
while (argv[optind] != NULL && strchr(argv[optind], '=') != NULL) {
if (putenv(argv[optind])) {
(void) perror(argv[optind]);
exit(1);
}
optind++;
}
/* if no utility, output environment strings */
if (argv[optind] == NULL) {
p = environ;
while (*p != NULL)
(void) puts(*p++);
} else {
(void) execvp(argv[optind], &argv[optind]);
(void) fprintf(stderr, "%s: %s: %s\n", argv[0], argv[optind],
strerror(errno));
exit(((errno == ENOENT) || (errno == ENOTDIR)) ? 127 : 126);
}
return (0);
}
static void
Usage()
{
(void) fprintf(stderr, gettext(
"Usage: env [-i] [name=value ...] [utility [argument ...]]\n"
" env [-] [name=value ...] [utility [argument ...]]\n"));
exit(1);
}
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