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2966d28c32
setenv(3) by tracking the size of the memory allocated instead of using strlen() on the current value. Convert all calls to POSIX from historic BSD API: - unsetenv returns an int. - putenv takes a char * instead of const char *. - putenv no longer makes a copy of the input string. - errno is set appropriately for POSIX. Exceptions involve bad environ variable and internal initialization code. These both set errno to EFAULT. Several patches to base utilities to handle the POSIX changes from Andrey Chernov's previous commit. A few I re-wrote to use setenv() instead of putenv(). New regression module for tools/regression/environ to test these functions. It also can be used to test the performance. Bump __FreeBSD_version to 700050 due to API change. PR: kern/99826 Approved by: wes Approved by: re (kensmith)
142 lines
4.0 KiB
C
142 lines
4.0 KiB
C
/*
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1988, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "envopts.h"
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extern char **environ;
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int env_verbosity;
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static void usage(void);
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int
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main(int argc, char **argv)
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{
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char *altpath, **ep, *p, **parg;
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char *cleanenv[1];
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int ch, want_clear;
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int rtrn;
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altpath = NULL;
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want_clear = 0;
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while ((ch = getopt(argc, argv, "-iP:S:v")) != -1)
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switch(ch) {
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case '-':
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case 'i':
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want_clear = 1;
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break;
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case 'P':
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altpath = strdup(optarg);
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break;
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case 'S':
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/*
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* The -S option, for "split string on spaces, with
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* support for some simple substitutions"...
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*/
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split_spaces(optarg, &optind, &argc, &argv);
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break;
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case 'v':
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env_verbosity++;
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if (env_verbosity > 1)
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fprintf(stderr, "#env verbosity now at %d\n",
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env_verbosity);
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break;
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case '?':
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default:
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usage();
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}
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if (want_clear) {
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environ = cleanenv;
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cleanenv[0] = NULL;
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if (env_verbosity)
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fprintf(stderr, "#env clearing environ\n");
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}
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for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) {
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if (env_verbosity)
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fprintf(stderr, "#env setenv:\t%s\n", *argv);
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*p = '\0';
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rtrn = setenv(*argv, p + 1, 1);
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*p = '=';
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if (rtrn == -1)
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err(EXIT_FAILURE, "setenv %s", *argv);
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}
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if (*argv) {
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if (altpath)
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search_paths(altpath, argv);
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if (env_verbosity) {
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fprintf(stderr, "#env executing:\t%s\n", *argv);
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for (parg = argv, argc = 0; *parg; parg++, argc++)
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fprintf(stderr, "#env arg[%d]=\t'%s'\n",
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argc, *parg);
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if (env_verbosity > 1)
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sleep(1);
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}
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execvp(*argv, argv);
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err(errno == ENOENT ? 127 : 126, "%s", *argv);
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}
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for (ep = environ; *ep; ep++)
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(void)printf("%s\n", *ep);
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exit(0);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr,
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"usage: env [-iv] [-P utilpath] [-S string] [name=value ...]"
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" [utility [argument ...]]\n");
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exit(1);
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}
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