2f739d3c1a
start with a '/', they are more supported (by POSIX and SUSv3) than filenames which have an '=' in them. Noticed by: tjr Approved by: re (blanket `env')
137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/*
|
|
* Copyright (c) 1988, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1988, 1993, 1994\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";
|
|
#endif /* not lint */
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "envopts.h"
|
|
|
|
extern char **environ;
|
|
|
|
int env_verbosity;
|
|
|
|
static void usage(void);
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
char *altpath, **ep, *p, **parg;
|
|
char *cleanenv[1];
|
|
int ch, want_clear;
|
|
|
|
altpath = NULL;
|
|
want_clear = 0;
|
|
while ((ch = getopt(argc, argv, "-iP:S:v")) != -1)
|
|
switch(ch) {
|
|
case '-':
|
|
case 'i':
|
|
want_clear = 1;
|
|
break;
|
|
case 'P':
|
|
altpath = strdup(optarg);
|
|
break;
|
|
case 'S':
|
|
/*
|
|
* The -S option, for "split string on spaces, with
|
|
* support for some simple substitutions"...
|
|
*/
|
|
split_spaces(optarg, &optind, &argc, &argv);
|
|
break;
|
|
case 'v':
|
|
env_verbosity++;
|
|
if (env_verbosity > 1)
|
|
fprintf(stderr, "#env verbosity now at %d\n",
|
|
env_verbosity);
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
if (want_clear) {
|
|
environ = cleanenv;
|
|
cleanenv[0] = NULL;
|
|
if (env_verbosity)
|
|
fprintf(stderr, "#env clearing environ\n");
|
|
}
|
|
for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) {
|
|
if (env_verbosity)
|
|
fprintf(stderr, "#env setenv:\t%s\n", *argv);
|
|
(void)setenv(*argv, ++p, 1);
|
|
}
|
|
if (*argv) {
|
|
if (altpath)
|
|
search_paths(altpath, argv);
|
|
if (env_verbosity) {
|
|
fprintf(stderr, "#env executing:\t%s\n", *argv);
|
|
for (parg = argv, argc = 0; *parg; parg++, argc++)
|
|
fprintf(stderr, "#env arg[%d]=\t'%s'\n",
|
|
argc, *parg);
|
|
if (env_verbosity > 1)
|
|
sleep(1);
|
|
}
|
|
execvp(*argv, argv);
|
|
err(errno == ENOENT ? 127 : 126, "%s", *argv);
|
|
}
|
|
for (ep = environ; *ep; ep++)
|
|
(void)printf("%s\n", *ep);
|
|
exit(0);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
(void)fprintf(stderr,
|
|
"usage: env [-iv] [-P utilpath] [-S string] [name=value ...]"
|
|
" [utility [argument ...]]\n");
|
|
exit(1);
|
|
}
|