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/* Copyright (C) 1991 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <stddef.h>
#include <stdio.h>
#include <grp.h>
static FILE *stream = NULL;
/* Rewind the stream. */
void
DEFUN_VOID(setgrent)
{
if (stream != NULL)
rewind(stream);
}
/* Close the stream. */
void
DEFUN_VOID(endgrent)
{
if (stream != NULL)
{
(void) fclose(stream);
stream = NULL;
}
}
/* Read an entry from the stream. */
struct group *
DEFUN_VOID(getgrent)
{
static PTR info = NULL;
if (info == NULL)
{
info = __grpalloc();
if (info == NULL)
return(NULL);
}
if (stream == NULL)
{
stream = __grpopen();
if (stream == NULL)
return(NULL);
}
return(__grpread(stream, info));
}
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