login/utmp-private.h

   1 /* Internal definitions and declarations for UTMP functions.
   2    Copyright (C) 1996 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 Library General Public License as
   9    published by the Free Software Foundation; either version 2 of the
  10    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    Library General Public License for more details.
  16
  17    You should have received a copy of the GNU Library General Public
  18    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  19    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef _UTMP_PRIVATE_H
  23 #define _UTMP_PRIVATE_H 1
  24
  25 #include <utmp.h>
  26
  27 /* The extra `int' argument for each function shows whether locking is
  28    wanted or not.  */
  29 struct utfuncs
  30 {
  31   int (*setutent) (int);
  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 struct utfuncs __libc_utmp_file_functions;
  42 extern struct utfuncs __libc_utmp_daemon_functions;
  43 extern struct utfuncs __libc_utmp_unknown_functions;
  44
  45 /* Currently selected backend.  */
  46 extern struct utfuncs *__libc_utmp_jump_table;
  47
  48 /* Current file name.  */
  49 extern const char *__libc_utmp_file_name;
  50
  51 #endif /* utmp-private.h */
  52
  53
  54