1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23
24#define setenv		______setenv
25
26#include <ast.h>
27
28#undef	setenv
29#undef	_lib_setenv	/* procopen() calls setenv() */
30
31#if _lib_setenv
32
33NoN(setenv)
34
35#else
36
37#undef	_def_map_ast
38#include <ast_map.h>
39
40#if defined(__EXPORT__)
41#define extern	__EXPORT__
42#endif
43
44extern int
45setenv(const char* name, const char* value, int overwrite)
46{
47	char*	s;
48
49	if (overwrite || !getenv(name))
50	{
51		if (!(s = sfprints("%s=%s", name, value)) || !(s = strdup(s)))
52			return -1;
53		return setenviron(s) ? 0 : -1;
54	}
55	return 0;
56}
57
58#endif
59