// SPDX-FileCopyrightText: 1991-1994, Julianne Frances Haugh
// SPDX-FileCopyrightText: 1996-2000, Marek Michałkiewicz
// SPDX-FileCopyrightText: 2000-2006, Tomasz Kłoczko
// SPDX-FileCopyrightText: 2007-2009, Nicolas François
// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
// SPDX-License-Identifier: BSD-3-Clause


#include <config.h>

#ident "$Id$"

#include <stdlib.h>
#include <errno.h>
#include <grp.h>
#include <sys/types.h>

#include "atoi/getnum.h"
#include "prototypes.h"


/*
 * getgr_nam_gid - Return a pointer to the group specified by a string.
 * The string may be a valid GID or a valid groupname.
 * If the group does not exist on the system, NULL is returned.
 */
extern /*@only@*//*@null@*/struct group *
getgr_nam_gid(/*@null@*/const char *grname)
{
	gid_t  gid;

	if (NULL == grname)
		return NULL;

	if (get_gid(grname, &gid) == 0)
		return xgetgrgid(gid);
	return xgetgrnam(grname);
}