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54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/* Internal definitions and declarations for UTMP functions.
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Copyright (C) 1996-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>
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and Paul Janzen <pcj@primenet.com>, 1996.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _UTMP_PRIVATE_H
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#define _UTMP_PRIVATE_H 1
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#include <utmp.h>
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#include <libc-lock.h>
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/* The structure describing the functions in a backend. */
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struct utfuncs
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{
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int (*setutent) (void);
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int (*getutent_r) (struct utmp *, struct utmp **);
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int (*getutid_r) (const struct utmp *, struct utmp *, struct utmp **);
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int (*getutline_r) (const struct utmp *, struct utmp *, struct utmp **);
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struct utmp *(*pututline) (const struct utmp *);
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void (*endutent) (void);
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int (*updwtmp) (const char *, const struct utmp *);
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};
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/* The tables from the services. */
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extern const struct utfuncs __libc_utmp_file_functions attribute_hidden;
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extern const struct utfuncs __libc_utmp_unknown_functions attribute_hidden;
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/* Currently selected backend. */
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extern const struct utfuncs *__libc_utmp_jump_table attribute_hidden;
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/* Current file name. */
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extern const char *__libc_utmp_file_name attribute_hidden;
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/* Locks access to the global data. */
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__libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
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#endif /* utmp-private.h */
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