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/* $OpenBSD: env.c,v 1.17 2016/10/28 07:22:59 schwarze Exp $ */ |
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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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* 3. 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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#include <err.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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static void __dead usage(void); |
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int |
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main(int argc, char *argv[]) |
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{ |
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extern char **environ; |
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extern int optind; |
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char **ep, *p; |
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int ch; |
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✗✓ |
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if (pledge("stdio exec flock rpath cpath wpath", NULL) == -1) |
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err(1, "pledge"); |
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✗✓ |
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while ((ch = getopt(argc, argv, "i-")) != -1) |
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switch(ch) { |
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case '-': /* obsolete */ |
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case 'i': |
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if ((environ = calloc(1, sizeof(char *))) == NULL) |
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err(126, "calloc"); |
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break; |
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default: |
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usage(); |
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} |
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argc -= optind; |
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argv += optind; |
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✗✓✗✗
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for (; *argv && (p = strchr(*argv, '=')); ++argv) { |
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*p++ = '\0'; |
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if (setenv(*argv, p, 1) == -1) { |
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/* reuse 126, it matches the problem most */ |
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err(126, "setenv"); |
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} |
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} |
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✗✓ |
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if (*argv) { |
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/* |
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* return 127 if the command to be run could not be |
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* found; 126 if the command was found but could |
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* not be invoked |
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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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✓✓ |
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for (ep = environ; *ep; ep++) |
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(void)printf("%s\n", *ep); |
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return 0; |
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} |
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static void __dead |
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usage(void) |
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{ |
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extern char *__progname; |
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(void)fprintf(stderr, "usage: %s [-i] [name=value ...] " |
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"[utility [argument ...]]\n", __progname); |
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exit(1); |
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} |