1: /* Internal definitions and declarations for UTMP functions.
    2:    Copyright (C) 1996, 2000, 2002, 2004 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4:    Contributed by Ulrich Drepper <drepper@cygnus.com>
    5:    and Paul Janzen <pcj@primenet.com>, 1996.
    6: 
    7:    The GNU C Library is free software; you can redistribute it and/or
    8:    modify it under the terms of the GNU Lesser General Public
    9:    License as published by the Free Software Foundation; either
   10:    version 2.1 of the License, or (at your option) any later version.
   11: 
   12:    The GNU C Library is distributed in the hope that it will be useful,
   13:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   14:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   15:    Lesser General Public License for more details.
   16: 
   17:    You should have received a copy of the GNU Lesser General Public
   18:    License along with the GNU C Library; if not, write to the Free
   19:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   20:    02111-1307 USA.  */
   21: 
   22: #ifndef _UTMP_PRIVATE_H
   23: #define _UTMP_PRIVATE_H 1
   24: 
   25: #include <utmp.h>
   26: #include <bits/libc-lock.h>
   27: 
   28: /* The structure describing the functions in a backend.  */
   29: struct utfuncs
   30: {
   31:   int (*setutent) (void);
   32:   int (*getutent_r) (struct utmp *, struct utmp **);
   33:   int (*getutid_r) (const struct utmp *, struct utmp *, struct utmp **);
   34:   int (*getutline_r) (const struct utmp *, struct utmp *, struct utmp **);
   35:   struct utmp *(*pututline) (const struct utmp *);
   36:   void (*endutent) (void);
   37:   int (*updwtmp) (const char *, const struct utmp *);
   38: };
   39: 
   40: /* The tables from the services.  */
   41: extern const struct utfuncs __libc_utmp_file_functions attribute_hidden;
   42: extern const struct utfuncs __libc_utmp_unknown_functions attribute_hidden;
   43: 
   44: /* Currently selected backend.  */
   45: extern const struct utfuncs *__libc_utmp_jump_table attribute_hidden;
   46: 
   47: /* Current file name.  */
   48: extern const char *__libc_utmp_file_name attribute_hidden;
   49: 
   50: /* Locks access to the global data.  */
   51: __libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
   52: 
   53: 
   54: #endif /* utmp-private.h */