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)
110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
/*-
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* Copyright (c) 2007 Sean C. Farley <scf@FreeBSD.org>
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* 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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* without modification, immediately at the beginning of the file.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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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 <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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extern char **environ;
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const char *envName = "FOOBAR";
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const char *envValSmall = "Hi";
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const char *envValLarge = "Hi, again";
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const char *envValAny = "Any value";
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int
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main(int argc, char **argv)
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{
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const char *env1 = NULL;
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const char *env2 = NULL;
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const char *env3 = NULL;
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const char *env4 = NULL;
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const char *env5 = NULL;
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int testNdx;
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/* Clean slate. */
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environ = NULL;
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testNdx = 0;
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/* Initial value of variable. */
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if (getenv(envName) != NULL)
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printf("not ");
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printf("ok %d - getenv(\"%s\")\n", ++testNdx, envName);
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/* Set value of variable to smaller value and get value. */
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if ((setenv(envName, envValSmall, 1) != 0) ||
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((env1 = getenv(envName)) == NULL) ||
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(strcmp(env1, envValSmall) != 0))
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printf("not ");
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printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName,
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envValSmall);
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/* Unset variable. */
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if ((unsetenv(envName) == -1) || ((env2 = getenv(envName)) != NULL))
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printf("not ");
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printf("ok %d - unsetenv(\"%s\")\n", ++testNdx, envName);
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/* Set variable to bigger value and get value. */
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if ((setenv(envName, envValLarge, 1) != 0) ||
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((env3 = getenv(envName)) == NULL) ||
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(strcmp(env3, envValLarge) != 0))
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printf("not ");
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printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName,
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envValLarge);
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/* Set variable to smaller value and get value. */
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if ((setenv(envName, envValSmall, 1) != 0) ||
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((env4 = getenv(envName)) == NULL) ||
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(strcmp(env4, envValSmall) != 0))
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printf("not ");
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printf("ok %d - setenv(\"%s\", \"%s\", 1)\n", ++testNdx, envName,
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envValSmall);
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/* Set variable to any value without overwrite and get value. */
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if ((setenv(envName, envValAny, 0) != 0) ||
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((env5 = getenv(envName)) == NULL) ||
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(strcmp(env5, envValAny) == 0))
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printf("not ");
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printf("ok %d - setenv(\"%s\", \"%s\", 0)\n", ++testNdx, envName,
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envValAny);
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/*
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* Verify FreeBSD-ism about allowing a program to keep old pointers without
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* risk of segfaulting.
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*/
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if ((strcmp(env1, envValSmall) != 0) ||
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(strcmp(env3, envValSmall) != 0) ||
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(strcmp(env4, envValSmall) != 0))
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printf("not ");
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printf("ok %d - old variables point to valid memory\n", ++testNdx);
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exit(EXIT_SUCCESS);
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}
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