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/* Copyright (C) 1993, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _UTMP_H
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#define _UTMP_H 1
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#include <features.h>
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#include <sys/types.h>
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__BEGIN_DECLS
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/* Get system dependent values and data structures. */
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#include <bits/utmp.h>
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/* Compatibility names for the strings of the canonical file names. */
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#define UTMP_FILE _PATH_UTMP
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#define UTMP_FILENAME _PATH_UTMP
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#define WTMP_FILE _PATH_WTMP
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#define WTMP_FILENAME _PATH_WTMP
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/* Make FD be the controlling terminal, stdin, stdout, and stderr;
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then close FD. Returns 0 on success, nonzero on error. */
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extern int login_tty (int __fd) __THROW;
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/* Write the given entry into utmp and wtmp. */
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extern void login (__const struct utmp *__entry) __THROW;
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/* Write the utmp entry to say the user on UT_LINE has logged out. */
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extern int logout (__const char *__ut_line) __THROW;
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/* Append to wtmp an entry for the current time and the given info. */
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extern void logwtmp (__const char *__ut_line, __const char *__ut_name,
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__const char *__ut_host) __THROW;
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/* Append entry UTMP to the wtmp-like file WTMP_FILE. */
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extern void updwtmp (__const char *__wtmp_file, __const struct utmp *__utmp)
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__THROW;
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/* Change name of the utmp file to be examined. */
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extern int utmpname (__const char *__file) __THROW;
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/* Read next entry from a utmp-like file. */
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extern struct utmp *getutent (void) __THROW;
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/* Reset the input stream to the beginning of the file. */
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extern void setutent (void) __THROW;
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/* Close the current open file. */
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extern void endutent (void) __THROW;
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/* Search forward from the current point in the utmp file until the
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next entry with a ut_type matching ID->ut_type. */
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extern struct utmp *getutid (__const struct utmp *__id) __THROW;
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/* Search forward from the current point in the utmp file until the
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next entry with a ut_line matching LINE->ut_line. */
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extern struct utmp *getutline (__const struct utmp *__line) __THROW;
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/* Write out entry pointed to by UTMP_PTR into the utmp file. */
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extern struct utmp *pututline (__const struct utmp *__utmp_ptr) __THROW;
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#if 0 /* def __USE_MISC */
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/* Reentrant versions of the file for handling utmp files. */
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extern int getutent_r (struct utmp *__buffer, struct utmp **__result) __THROW;
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extern int getutid_r (__const struct utmp *__id, struct utmp *__buffer,
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struct utmp **__result) __THROW;
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extern int getutline_r (__const struct utmp *__line,
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struct utmp *__buffer, struct utmp **__result) __THROW;
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#endif /* Use misc. */
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__END_DECLS
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#endif /* utmp.h */
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