14887Schin /*********************************************************************** 24887Schin * * 34887Schin * This software is part of the ast package * 4*12068SRoger.Faulkner@Oracle.COM * Copyright (c) 1985-2010 AT&T Intellectual Property * 54887Schin * and is licensed under the * 64887Schin * Common Public License, Version 1.0 * 78462SApril.Chin@Sun.COM * by AT&T Intellectual Property * 84887Schin * * 94887Schin * A copy of the License is available at * 104887Schin * http://www.opensource.org/licenses/cpl1.0.txt * 114887Schin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 124887Schin * * 134887Schin * Information and Software Systems Research * 144887Schin * AT&T Research * 154887Schin * Florham Park NJ * 164887Schin * * 174887Schin * Glenn Fowler <gsf@research.att.com> * 184887Schin * David Korn <dgk@research.att.com> * 194887Schin * Phong Vo <kpv@research.att.com> * 204887Schin * * 214887Schin ***********************************************************************/ 224887Schin #pragma prototyped 234887Schin 244887Schin #include <ast.h> 254887Schin 264887Schin #if _lib_setpgid 274887Schin 284887Schin NoN(setpgid) 294887Schin 304887Schin #else 314887Schin 324887Schin #include <error.h> 334887Schin 344887Schin #ifndef ENOSYS 354887Schin #define ENOSYS EINVAL 364887Schin #endif 374887Schin 384887Schin #if _lib_setpgrp2 394887Schin #define setpgrp setpgrp2 404887Schin #else 414887Schin #if _lib_BSDsetpgrp 424887Schin #define _lib_setpgrp2 1 434887Schin #define setpgrp BSDsetpgrp 444887Schin #else 454887Schin #if _lib_wait3 464887Schin #define _lib_setpgrp2 1 474887Schin #endif 484887Schin #endif 494887Schin #endif 504887Schin 514887Schin #if _lib_setpgrp2 524887Schin extern int setpgrp(int, int); 534887Schin #else 544887Schin extern int setpgrp(void); 554887Schin #endif 564887Schin 574887Schin /* 584887Schin * set process group id 594887Schin */ 604887Schin 614887Schin int 624887Schin setpgid(pid_t pid, pid_t pgid) 634887Schin { 644887Schin #if _lib_setpgrp2 654887Schin return(setpgrp(pid, pgid)); 664887Schin #else 674887Schin #if _lib_setpgrp 684887Schin int caller = getpid(); 694887Schin 704887Schin if ((pid == 0 || pid == caller) && (pgid == 0 || pgid == caller)) 714887Schin return(setpgrp()); 724887Schin errno = EINVAL; 734887Schin #else 744887Schin errno = ENOSYS; 754887Schin #endif 764887Schin return(-1); 774887Schin #endif 784887Schin } 794887Schin 804887Schin #endif 81