1*b30d1939SAndy Fiddaman /*********************************************************************** 2*b30d1939SAndy Fiddaman * * 3*b30d1939SAndy Fiddaman * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property * 5*b30d1939SAndy Fiddaman * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 7*b30d1939SAndy Fiddaman * by AT&T Intellectual Property * 8*b30d1939SAndy Fiddaman * * 9*b30d1939SAndy Fiddaman * 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) * 12*b30d1939SAndy Fiddaman * * 13*b30d1939SAndy Fiddaman * Information and Software Systems Research * 14*b30d1939SAndy Fiddaman * AT&T Research * 15*b30d1939SAndy Fiddaman * Florham Park NJ * 16*b30d1939SAndy Fiddaman * * 17*b30d1939SAndy Fiddaman * Glenn Fowler <gsf@research.att.com> * 18*b30d1939SAndy Fiddaman * David Korn <dgk@research.att.com> * 19*b30d1939SAndy Fiddaman * Phong Vo <kpv@research.att.com> * 20*b30d1939SAndy Fiddaman * * 21*b30d1939SAndy Fiddaman ***********************************************************************/ 22*b30d1939SAndy Fiddaman #pragma prototyped 23*b30d1939SAndy Fiddaman 24*b30d1939SAndy Fiddaman #include <ast.h> 25*b30d1939SAndy Fiddaman 26*b30d1939SAndy Fiddaman #if _lib_setpgid 27*b30d1939SAndy Fiddaman 28*b30d1939SAndy Fiddaman NoN(setpgid) 29*b30d1939SAndy Fiddaman 30*b30d1939SAndy Fiddaman #else 31*b30d1939SAndy Fiddaman 32*b30d1939SAndy Fiddaman #include <error.h> 33*b30d1939SAndy Fiddaman 34*b30d1939SAndy Fiddaman #ifndef ENOSYS 35*b30d1939SAndy Fiddaman #define ENOSYS EINVAL 36*b30d1939SAndy Fiddaman #endif 37*b30d1939SAndy Fiddaman 38*b30d1939SAndy Fiddaman #if _lib_setpgrp2 39*b30d1939SAndy Fiddaman #define setpgrp setpgrp2 40*b30d1939SAndy Fiddaman #else 41*b30d1939SAndy Fiddaman #if _lib_BSDsetpgrp 42*b30d1939SAndy Fiddaman #define _lib_setpgrp2 1 43*b30d1939SAndy Fiddaman #define setpgrp BSDsetpgrp 44*b30d1939SAndy Fiddaman #else 45*b30d1939SAndy Fiddaman #if _lib_wait3 46*b30d1939SAndy Fiddaman #define _lib_setpgrp2 1 47*b30d1939SAndy Fiddaman #endif 48*b30d1939SAndy Fiddaman #endif 49*b30d1939SAndy Fiddaman #endif 50*b30d1939SAndy Fiddaman 51*b30d1939SAndy Fiddaman #if _lib_setpgrp2 52*b30d1939SAndy Fiddaman extern int setpgrp(int, int); 53*b30d1939SAndy Fiddaman #else 54*b30d1939SAndy Fiddaman extern int setpgrp(void); 55*b30d1939SAndy Fiddaman #endif 56*b30d1939SAndy Fiddaman 57*b30d1939SAndy Fiddaman /* 58*b30d1939SAndy Fiddaman * set process group id 59*b30d1939SAndy Fiddaman */ 60*b30d1939SAndy Fiddaman 61*b30d1939SAndy Fiddaman int 62*b30d1939SAndy Fiddaman setpgid(pid_t pid, pid_t pgid) 63*b30d1939SAndy Fiddaman { 64*b30d1939SAndy Fiddaman #if _lib_setpgrp2 65*b30d1939SAndy Fiddaman return(setpgrp(pid, pgid)); 66*b30d1939SAndy Fiddaman #else 67*b30d1939SAndy Fiddaman #if _lib_setpgrp 68*b30d1939SAndy Fiddaman int caller = getpid(); 69*b30d1939SAndy Fiddaman 70*b30d1939SAndy Fiddaman if ((pid == 0 || pid == caller) && (pgid == 0 || pgid == caller)) 71*b30d1939SAndy Fiddaman return(setpgrp()); 72*b30d1939SAndy Fiddaman errno = EINVAL; 73*b30d1939SAndy Fiddaman #else 74*b30d1939SAndy Fiddaman errno = ENOSYS; 75*b30d1939SAndy Fiddaman #endif 76*b30d1939SAndy Fiddaman return(-1); 77*b30d1939SAndy Fiddaman #endif 78*b30d1939SAndy Fiddaman } 79*b30d1939SAndy Fiddaman 80*b30d1939SAndy Fiddaman #endif 81