/* Copyright (C) 1993-2024 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, see
<https://www.gnu.org/licenses/>. */
#ifndef _UTMP_H
#define _UTMP_H 1
#include <features.h>
#include <sys/types.h>
__BEGIN_DECLS
/* Get system dependent values and data structures. */
#include <bits/utmp.h>
/* Compatibility names for the strings of the canonical file names. */
#define UTMP_FILE _PATH_UTMP
#define UTMP_FILENAME _PATH_UTMP
#define WTMP_FILE _PATH_WTMP
#define WTMP_FILENAME _PATH_WTMP
/* Make FD be the controlling terminal, stdin, stdout, and stderr;
then close FD. Returns 0 on success, nonzero on error. */
extern int login_tty (int __fd) __THROW;
/* Write the given entry into utmp and wtmp. */
extern void login (const struct utmp *__entry) __THROW;
/* Write the utmp entry to say the user on UT_LINE has logged out. */
extern int logout (const char *__ut_line) __THROW;
/* Append to wtmp an entry for the current time and the given info. */
extern void logwtmp (const char *__ut_line, const char *__ut_name,
const char *__ut_host) __THROW;
/* Append entry UTMP to the wtmp-like file WTMP_FILE. */
extern void updwtmp (const char *__wtmp_file, const struct utmp *__utmp)
__THROW;
/* Change name of the utmp file to be examined. */
extern int utmpname (const char *__file) __THROW;
/* Read next entry from a utmp-like file. */
extern struct utmp *getutent (void) __THROW;
/* Reset the input stream to the beginning of the file. */
extern void setutent (void) __THROW;
/* Close the current open file. */
extern void endutent (void) __THROW;
/* Search forward from the current point in the utmp file until the
next entry with a ut_type matching ID->ut_type. */
extern struct utmp *getutid (const struct utmp *__id) __THROW;
/* Search forward from the current point in the utmp file until the
next entry with a ut_line matching LINE->ut_line. */
extern struct utmp *getutline (const struct utmp *__line) __THROW;
/* Write out entry pointed to by UTMP_PTR into the utmp file. */
extern struct utmp *pututline (const struct utmp *__utmp_ptr) __THROW;
#ifdef __USE_MISC
/* Reentrant versions of the file for handling utmp files. */
extern int getutent_r (struct utmp *__buffer, struct utmp **__result) __THROW;
extern int getutid_r (const struct utmp *__id, struct utmp *__buffer,
struct utmp **__result) __THROW;
extern int getutline_r (const struct utmp *__line,
struct utmp *__buffer, struct utmp **__result) __THROW;
#endif /* Use misc. */
__END_DECLS
#endif /* utmp.h */
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