busybox/include/grp_.h

/* vi: set sw=4 ts=4: */
/* Copyright (C) 1991,92,95,96,97,98,99,2000,01 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.
 */
/*
 * POSIX Standard: 9.2.1 Group Database Access	<grp.h>
 */
#ifndef BB_GRP_H
#define BB_GRP_H 1

PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN

/* This file is #included after #include <grp.h>
 * We will use libc-defined structures, but will #define function names
 * so that function calls are directed to bb_internal_XXX replacements
 */
#undef endgrent
#define endgrent     bb_internal_endgrent
#define getgrgid     bb_internal_getgrgid
#define getgrnam     bb_internal_getgrnam
#define getgrouplist bb_internal_getgrouplist
#define initgroups   bb_internal_initgroups

/* All function names below should be remapped by #defines above
 * in order to not collide with libc names. */

/* Close the group-file stream.  */
void FAST_FUNC endgrent(void);

/* Search for an entry with a matching group ID.  */
struct group* FAST_FUNC getgrgid(gid_t __gid);

/* Search for an entry with a matching group name.  */
struct group* FAST_FUNC getgrnam(const char *__name);

/* Reentrant versions of some of the functions above. */

/* Store at most *NGROUPS members of the group set for USER into
   *GROUPS.  Also include GROUP.  The actual number of groups found is
   returned in *NGROUPS.  Return -1 if the if *NGROUPS is too small.  */
int FAST_FUNC getgrouplist(const char *__user, gid_t __group,
		gid_t *__groups, int *__ngroups);

/* Initialize the group set for the current user
   by reading the group database and using all groups
   of which USER is a member.  Also include GROUP.  */
int FAST_FUNC initgroups(const char *__user, gid_t __group);

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#endif