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att
GitHub Repository: att/ast
 Path: blob/master/src/lib/libast/comp/getgroups.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1985-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Phong Vo <[email protected]>                    *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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#include <ast.h>

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#if !defined(getgroups) && defined(_lib_getgroups)

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NoN(getgroups)

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#else

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#include <error.h>

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#if defined(getgroups)

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#undef	getgroups

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#define	ast_getgroups	_ast_getgroups

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#define botched		1

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extern int		getgroups(int, int*);

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#else

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#define ast_getgroups	getgroups

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#endif

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#if defined(__EXPORT__)

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#define extern	__EXPORT__

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#endif

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extern int

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ast_getgroups(int len, gid_t* set)

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{

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#if botched

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#if NGROUPS_MAX < 1

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#undef	NGROUPS_MAX

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#define NGROUPS_MAX	1

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#endif

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	register int	i;

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	int		big[NGROUPS_MAX];

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#else

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#undef	NGROUPS_MAX

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#define NGROUPS_MAX	1

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#endif

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	if (!len) return(NGROUPS_MAX);

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	if (len < 0 || !set)

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	{

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		errno = EINVAL;

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		return(-1);

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	}

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#if botched

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	len = getgroups(len > NGROUPS_MAX ? NGROUPS_MAX : len, big);

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	for (i = 0; i < len; i++)

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		set[i] = big[i];

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	return(len);

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#else

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	*set = getgid();

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	return(1);

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#endif

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}

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#endif

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