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Commit	Line	Data
	1	/*-
	2	* Copyright (c) 1988, 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 4. Neither the name of the University nor the names of its contributors
	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*/
	29
	30	#if defined(LIBC_SCCS) && !defined(lint)
	31	static char sccsid[] = "@(#)putenv.c 8.2 (Berkeley) 3/27/94";
	32	#endif /* LIBC_SCCS and not lint */
	33	#include <sys/cdefs.h>
	34	__FBSDID("$FreeBSD: src/lib/libc/stdlib/putenv.c,v 1.6 2007/05/01 16:02:41 ache Exp $");
	35
	36	#include <stdlib.h>
	37	#include <string.h>
	38	#include <sys/types.h>
	39	#include <db.h>
	40	#include <crt_externs.h>
	41	#include <errno.h>
	42
	43	extern struct owned_ptr *__env_owned;
	44
	45	#ifdef LEGACY_CRT1_ENVIRON
	46	extern char **_saved_environ;
	47	#endif /* LEGACY_CRT1_ENVIRON */
	48
	49	__private_extern__ int __init__env_owned_locked(int);
	50	__private_extern__ int __setenv_locked(const char , const char , int, int, char **, struct owned_ptr );
	51	__private_extern__ void __environ_lock(void);
	52	__private_extern__ void __environ_unlock(void);
	53
	54	#ifndef BUILDING_VARIANT
	55	/*
	56	* _putenvp -- SPI using an arbitrary pointer to string array (the array must
	57	* have been created with malloc) and an env state, created by _allocenvstate().
	58	* Returns ptr to value associated with name, if any, else NULL.
	59	*/
	60	int
	61	_putenvp(char str, char *envp, void state)
	62	{
	63	__environ_lock();
	64	if (__init__env_owned_locked(1)) {
	65	__environ_unlock();
	66	return (-1);
	67	}
	68	int ret = __setenv_locked(str, NULL, 1, 0, envp,
	69	(state ? (struct owned_ptr *)state : __env_owned));
	70	__environ_unlock();
	71	return ret;
	72	}
	73	#endif /* BUILDING_VARIANT */
	74
	75	int
	76	putenv(str)
	77	char *str;
	78	{
	79	int ret;
	80	int copy;
	81
	82	#if __DARWIN_UNIX03
	83	if (str == NULL \|\| *str == 0 \|\| index(str, '=') == NULL) {
	84	errno = EINVAL;
	85	return (-1);
	86	}
	87	#else /* !__DARWIN_UNIX03 */
	88	if (index(str, '=') == NULL)
	89	return (-1);
	90	#endif /* __DARWIN_UNIX03 */
	91
	92	#if __DARWIN_UNIX03
	93	copy = 0;
	94	#else /* !__DARWIN_UNIX03 */
	95	copy = -1;
	96	#endif /* __DARWIN_UNIX03 */
	97
	98	__environ_lock();
	99	if (__init__env_owned_locked(1)) {
	100	__environ_unlock();
	101	return (-1);
	102	}
	103	ret = __setenv_locked(str, NULL, 1, copy, _NSGetEnviron(), __env_owned);
	104	#ifdef LEGACY_CRT1_ENVIRON
	105	_saved_environ = *_NSGetEnviron();
	106	#endif /* LEGACY_CRT1_ENVIRON */
	107	__environ_unlock();
	108	return ret;
	109	}