/*-
* Copyright (c) 2007 Sean C. Farley <scf@FreeBSD.org>
* 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,
* without modification, immediately at the beginning of the file.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/cdefs.h>
extern char **environ;
const char *envName = "FOOBAR";
const char *envValSmall = "Hi";
const char *envValLarge = "Hi, again";
const char *envValAny = "Any value";
int
main(int argc, char **argv)
{
const char *env1 = NULL;
const char *env2 = NULL;
const char *env3 = NULL;
const char *env4 = NULL;
const char *env5 = NULL;
int testNdx;
/* Clean slate. */
environ = NULL;
testNdx = 0;
/* Initial value of variable. */
if (getenv(envName) != NULL)
printf("not ");
printf("ok %d - getenv(\"%s\")\n", ++testNdx, envName);
/* Set value of variable to smaller value and get value. */
if ((setenv(envName, envValSmall, 1) != 0) ||
((env1 = getenv(envName)) == NULL) ||
(strcmp(env1, envValSmall) != 0))
printf("not ");
printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName,
envValSmall);
/* Unset variable. */
if ((unsetenv(envName) == -1) || ((env2 = getenv(envName)) != NULL))
printf("not ");
printf("ok %d - unsetenv(\"%s\")\n", ++testNdx, envName);
/* Set variable to bigger value and get value. */
if ((setenv(envName, envValLarge, 1) != 0) ||
((env3 = getenv(envName)) == NULL) ||
(strcmp(env3, envValLarge) != 0))
printf("not ");
printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName,
envValLarge);
/* Set variable to smaller value and get value. */
if ((setenv(envName, envValSmall, 1) != 0) ||
((env4 = getenv(envName)) == NULL) ||
(strcmp(env4, envValSmall) != 0))
printf("not ");
printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName,
envValSmall);
/* Set variable to any value without overwrite and get value. */
if ((setenv(envName, envValAny, 0) != 0) ||
((env5 = getenv(envName)) == NULL) ||
(strcmp(env5, envValAny) == 0))
printf("not ");
printf("ok %d - setenv(\"%s\", \"%s\", 0)\n", ++testNdx, envName,
envValAny);
/*
* Verify FreeBSD-ism about allowing a program to keep old pointers without
* risk of segfaulting.
*/
if ((strcmp(env1, envValSmall) != 0) ||
(strcmp(env3, envValSmall) != 0) ||
(strcmp(env4, envValSmall) != 0))
printf("not ");
printf("ok %d - old variables point to valid memory\n", ++testNdx);
exit(EXIT_SUCCESS);
}
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