1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2009 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 33 NoN(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 44 extern int 45 setenv(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