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) 31static 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 43extern struct owned_ptr *__env_owned; 44 45#ifdef LEGACY_CRT1_ENVIRON 46extern char **_saved_environ; 47#endif /* LEGACY_CRT1_ENVIRON */ 48 49__private_extern__ int __init__env_owned(int); 50__private_extern__ int __setenv(const char *, const char *, int, int, char ***, struct owned_ptr *); 51 52#ifndef BUILDING_VARIANT 53/* 54 * _putenvp -- SPI using an arbitrary pointer to string array (the array must 55 * have been created with malloc) and an env state, created by _allocenvstate(). 56 * Returns ptr to value associated with name, if any, else NULL. 57 */ 58int 59_putenvp(char *str, char ***envp, void *state) 60{ 61 if (__init__env_owned(1)) return (-1); 62 return (__setenv(str, NULL, 1, 0, envp, (state ? (struct owned_ptr *)state : __env_owned))); 63} 64#endif /* BUILDING_VARIANT */ 65 66int 67putenv(str) 68 char *str; 69{ 70#ifdef LEGACY_CRT1_ENVIRON 71 int ret; 72#endif /* LEGACY_CRT1_ENVIRON */ 73 74#if __DARWIN_UNIX03 75 if (str == NULL || *str == 0 || index(str, '=') == NULL) { 76 errno = EINVAL; 77 return (-1); 78 } 79#else /* !__DARWIN_UNIX03 */ 80 if (index(str, '=') == NULL) 81 return (-1); 82#endif /* __DARWIN_UNIX03 */ 83 if (__init__env_owned(1)) return (-1); 84#ifdef LEGACY_CRT1_ENVIRON 85 ret = 86#else /* !LEGACY_CRT1_ENVIRON */ 87 return 88#endif /* !LEGACY_CRT1_ENVIRON */ 89 __setenv(str, NULL, 1, 90#if __DARWIN_UNIX03 91 0, 92#else /* !__DARWIN_UNIX03 */ 93 -1, 94#endif /* __DARWIN_UNIX03 */ 95 _NSGetEnviron(), __env_owned); 96#ifdef LEGACY_CRT1_ENVIRON 97 _saved_environ = *_NSGetEnviron(); 98 return ret; 99#endif /* LEGACY_CRT1_ENVIRON */ 100} 101