From 3950ffe2a485479f6561c27364d3d7df5a21d124 Mon Sep 17 00:00:00 2001 From: Igor Pashev Date: Sun, 24 Jun 2012 22:28:35 +0000 Subject: Imported Upstream version 93u+ --- src/lib/libast/comp/setpgid.c | 80 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 src/lib/libast/comp/setpgid.c (limited to 'src/lib/libast/comp/setpgid.c') diff --git a/src/lib/libast/comp/setpgid.c b/src/lib/libast/comp/setpgid.c new file mode 100644 index 0000000..c966919 --- /dev/null +++ b/src/lib/libast/comp/setpgid.c @@ -0,0 +1,80 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler * +* David Korn * +* Phong Vo * +* * +***********************************************************************/ +#pragma prototyped + +#include + +#if _lib_setpgid + +NoN(setpgid) + +#else + +#include + +#ifndef ENOSYS +#define ENOSYS EINVAL +#endif + +#if _lib_setpgrp2 +#define setpgrp setpgrp2 +#else +#if _lib_BSDsetpgrp +#define _lib_setpgrp2 1 +#define setpgrp BSDsetpgrp +#else +#if _lib_wait3 +#define _lib_setpgrp2 1 +#endif +#endif +#endif + +#if _lib_setpgrp2 +extern int setpgrp(int, int); +#else +extern int setpgrp(void); +#endif + +/* + * set process group id + */ + +int +setpgid(pid_t pid, pid_t pgid) +{ +#if _lib_setpgrp2 + return(setpgrp(pid, pgid)); +#else +#if _lib_setpgrp + int caller = getpid(); + + if ((pid == 0 || pid == caller) && (pgid == 0 || pgid == caller)) + return(setpgrp()); + errno = EINVAL; +#else + errno = ENOSYS; +#endif + return(-1); +#endif +} + +#endif -- cgit v1.2.3