getgroups.c revision 3f54fd611f536639ec30dd53c48e5ec1897cc7d9
/***********************************************************************
* *
* 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 <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
#include <ast.h>
#if !defined(getgroups) && defined(_lib_getgroups)
NoN(getgroups)
#else
#include <error.h>
#if defined(getgroups)
#undef getgroups
#define ast_getgroups _ast_getgroups
#define botched 1
extern int getgroups(int, int*);
#else
#define ast_getgroups getgroups
#endif
#if defined(__EXPORT__)
#define extern __EXPORT__
#endif
extern int
ast_getgroups(int len, gid_t* set)
{
#if botched
#if NGROUPS_MAX < 1
#undef NGROUPS_MAX
#define NGROUPS_MAX 1
#endif
register int i;
int big[NGROUPS_MAX];
#else
#undef NGROUPS_MAX
#define NGROUPS_MAX 1
#endif
if (!len) return(NGROUPS_MAX);
if (len < 0 || !set)
{
errno = EINVAL;
return(-1);
}
#if botched
len = getgroups(len > NGROUPS_MAX ? NGROUPS_MAX : len, big);
for (i = 0; i < len; i++)
set[i] = big[i];
return(len);
#else
*set = getgid();
return(1);
#endif
}
#endif