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/* Internal header for netgroup related functions.

   Copyright (C) 1996, 1997, 2004 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.  */

#ifndef _NETGROUP_H

#define _NETGROUP_H     1

#include <nsswitch.h>

/* A netgroup can consist of names of other netgroups.  We have to

   track which netgroups were read and which still have to be read.  */

struct name_list

{

  struct name_list *next;

  char name[0];

};

/* Dataset for iterating netgroups.  */

struct __netgrent

{

  enum { triple_val, group_val } type;

  union

  {

    struct

    {

      const char *host;

      const char *user;

      const char *domain;

    }

    triple;

    const char *group;

  } val;

  /* Room for the data kept between the calls to the netgroup

     functions.  We must avoid global variables.  */

  char *data;

  size_t data_size;

  union

  {

    char *cursor;

    unsigned long int position;

  };

  int first;

  struct name_list *known_groups;

  struct name_list *needed_groups;

  /* This handle for the NSS data base is shared between all

     set/get/endXXXent functions.  */

  service_user *nip;

};

/* The internal netgroup handling functions might be called from outside.  */

extern int __internal_setnetgrent (const char *group,

                                   struct __netgrent *datap);

extern void __internal_endnetgrent (struct __netgrent *datap);

extern int __internal_getnetgrent_r (char **hostp, char **userp,

                                     char **domainp, struct __netgrent *datap,

                                     char *buffer, size_t buflen, int *errnop);

#endif /* netgroup.h */