GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/env/env.c Lines: 9 22 40.9 %
Date: 2017-11-13 Branches: 6 19 31.6 %

Line Branch Exec Source
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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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	if (pledge("stdio exec flock rpath cpath wpath", NULL) == -1)
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		err(1, "pledge");
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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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	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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	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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	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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}