1/* $NetBSD: compat_putenv.c,v 1.2 2012/04/22 15:55:41 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31#include <sys/cdefs.h> 32#if defined(LIBC_SCCS) && !defined(lint) 33__RCSID("$NetBSD: compat_putenv.c,v 1.2 2012/04/22 15:55:41 christos Exp $"); 34#endif /* LIBC_SCCS and not lint */ 35 36#define __LIBC12_SOURCE__ 37#include "namespace.h" 38 39#include <assert.h> 40#include <errno.h> 41#include <stdlib.h> 42#include <string.h> 43#include <compat/include/stdlib.h> 44 45#include "env.h" 46#include "local.h" 47 48#ifdef __weak_alias 49__weak_alias(putenv,_putenv) 50#endif 51 52__warn_references(putenv, 53 "warning: reference to compatibility putenv();" 54 " include <stdlib.h> for correct reference") 55 56/* 57 * putenv(name) -- 58 * This version implicitly copies the string for compatibility. 59 */ 60int 61putenv(char *name) 62{ 63 size_t l_name; 64 char *copy; 65 int rv; 66 67 _DIAGASSERT(name != NULL); 68 69 l_name = __envvarnamelen(name, true); 70 if (l_name == 0) { 71 errno = EINVAL; 72 return -1; 73 } 74 75 if ((copy = strdup(name)) == NULL) 76 return -1; 77 copy[l_name++] = '\0'; 78 79 rv = setenv(copy, copy + l_name, 1); 80 81 free(copy); 82 return rv; 83} 84