/* Group merging implementation.

   Copyright (C) 2016-2018 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 Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _GRP_MERGE_H

#define _GRP_MERGE_H 1

#include <grp.h>

/* Duplicate a grp struct (and its members). When no longer needed, the

   calling function must free(newbuf).  */

int

__copy_grp (const struct group srcgrp, const size_t buflen,

	    struct group *destgrp, char *destbuf, char **endptr);

/* Merge the member lists of two grp structs together.  */

int

__merge_grp (struct group *savedgrp, char *savedbuf, char *savedend,

	     size_t buflen, struct group *mergegrp, char *mergebuf);

#endif /* _GRP_MERGE_H */