1*4887Schin /*********************************************************************** 2*4887Schin * * 3*4887Schin * This software is part of the ast package * 4*4887Schin * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5*4887Schin * and is licensed under the * 6*4887Schin * Common Public License, Version 1.0 * 7*4887Schin * by AT&T Knowledge Ventures * 8*4887Schin * * 9*4887Schin * A copy of the License is available at * 10*4887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 11*4887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12*4887Schin * * 13*4887Schin * Information and Software Systems Research * 14*4887Schin * AT&T Research * 15*4887Schin * Florham Park NJ * 16*4887Schin * * 17*4887Schin * Glenn Fowler <gsf@research.att.com> * 18*4887Schin * David Korn <dgk@research.att.com> * 19*4887Schin * Phong Vo <kpv@research.att.com> * 20*4887Schin * * 21*4887Schin ***********************************************************************/ 22*4887Schin #pragma prototyped 23*4887Schin 24*4887Schin #include <ast.h> 25*4887Schin 26*4887Schin #if _lib_dup2 27*4887Schin 28*4887Schin NoN(dup2) 29*4887Schin 30*4887Schin #else 31*4887Schin 32*4887Schin #include <error.h> 33*4887Schin 34*4887Schin int 35*4887Schin dup2(int d1, int d2) 36*4887Schin { 37*4887Schin int save_errno; 38*4887Schin 39*4887Schin if (d1 == d2) return(d1); 40*4887Schin save_errno = errno; 41*4887Schin close(d2); 42*4887Schin errno = save_errno; 43*4887Schin return(fcntl(d1, F_DUPFD, d2)); 44*4887Schin } 45*4887Schin 46*4887Schin #endif 47