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_setpgid 27da2e3ebdSchin 28da2e3ebdSchin NoN(setpgid) 29da2e3ebdSchin 30da2e3ebdSchin #else 31da2e3ebdSchin 32da2e3ebdSchin #include <error.h> 33da2e3ebdSchin 34da2e3ebdSchin #ifndef ENOSYS 35da2e3ebdSchin #define ENOSYS EINVAL 36da2e3ebdSchin #endif 37da2e3ebdSchin 38da2e3ebdSchin #if _lib_setpgrp2 39da2e3ebdSchin #define setpgrp setpgrp2 40da2e3ebdSchin #else 41da2e3ebdSchin #if _lib_BSDsetpgrp 42da2e3ebdSchin #define _lib_setpgrp2 1 43da2e3ebdSchin #define setpgrp BSDsetpgrp 44da2e3ebdSchin #else 45da2e3ebdSchin #if _lib_wait3 46da2e3ebdSchin #define _lib_setpgrp2 1 47da2e3ebdSchin #endif 48da2e3ebdSchin #endif 49da2e3ebdSchin #endif 50da2e3ebdSchin 51da2e3ebdSchin #if _lib_setpgrp2 52da2e3ebdSchin extern int setpgrp(int, int); 53da2e3ebdSchin #else 54da2e3ebdSchin extern int setpgrp(void); 55da2e3ebdSchin #endif 56da2e3ebdSchin 57da2e3ebdSchin /* 58da2e3ebdSchin * set process group id 59da2e3ebdSchin */ 60da2e3ebdSchin 61da2e3ebdSchin int 62da2e3ebdSchin setpgid(pid_t pid, pid_t pgid) 63da2e3ebdSchin { 64da2e3ebdSchin #if _lib_setpgrp2 65da2e3ebdSchin return(setpgrp(pid, pgid)); 66da2e3ebdSchin #else 67da2e3ebdSchin #if _lib_setpgrp 68da2e3ebdSchin int caller = getpid(); 69da2e3ebdSchin 70da2e3ebdSchin if ((pid == 0 || pid == caller) && (pgid == 0 || pgid == caller)) 71da2e3ebdSchin return(setpgrp()); 72da2e3ebdSchin errno = EINVAL; 73da2e3ebdSchin #else 74da2e3ebdSchin errno = ENOSYS; 75da2e3ebdSchin #endif 76da2e3ebdSchin return(-1); 77da2e3ebdSchin #endif 78da2e3ebdSchin } 79da2e3ebdSchin 80da2e3ebdSchin #endif 81