1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * David Korn <dgk@research.att.com> * 19da2e3ebdSchin * Phong Vo <kpv@research.att.com> * 20da2e3ebdSchin * * 21da2e3ebdSchin ***********************************************************************/ 22da2e3ebdSchin #pragma prototyped 23da2e3ebdSchin 24da2e3ebdSchin #include <ast.h> 25da2e3ebdSchin 26da2e3ebdSchin #if _lib_dup2 27da2e3ebdSchin 28da2e3ebdSchin NoN(dup2) 29da2e3ebdSchin 30da2e3ebdSchin #else 31da2e3ebdSchin 32da2e3ebdSchin #include <error.h> 33da2e3ebdSchin 34da2e3ebdSchin int 35da2e3ebdSchin dup2(int d1, int d2) 36da2e3ebdSchin { 37da2e3ebdSchin int save_errno; 38da2e3ebdSchin 39da2e3ebdSchin if (d1 == d2) return(d1); 40da2e3ebdSchin save_errno = errno; 41da2e3ebdSchin close(d2); 42da2e3ebdSchin errno = save_errno; 43da2e3ebdSchin return(fcntl(d1, F_DUPFD, d2)); 44da2e3ebdSchin } 45da2e3ebdSchin 46da2e3ebdSchin #endif 47