75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/* Copyright (C) 1996 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>, 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <utmp.h>
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/* This is the default name. */
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static const char default_utmp_name[] = _PATH_UTMP;
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/* Current file name. */
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static const char *utmp_file_name = (const char *) default_utmp_name;
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void
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setutent_r (struct utmp_data *utmp_data)
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{
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/* Before the UTMP_DATA is used before the first time the UT_FD
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field must be set to -1. */
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if (utmp_data->ut_fd == -1)
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{
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utmp_data->ut_fd = open (utmp_file_name, O_RDWR);
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if (utmp_data->ut_fd == -1)
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{
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/* Hhm, read-write access did not work. Try read-only. */
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utmp_data->ut_fd = open (utmp_file_name, O_RDONLY);
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if (utmp_data->ut_fd == -1)
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{
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perror (_("while opening UTMP file"));
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return;
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}
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}
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}
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/* Remember we are at beginning of file. */
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utmp_data->loc_utmp = 0;
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#if _HAVE_UT_TYPE - 0
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utmp_data->ubuf.ut_type = UT_UNKNOWN;
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#endif
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}
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int
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utmpname (const char *file)
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{
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char *fname = strdup (file);
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if (fname == NULL)
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return 0;
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if (utmp_file_name != default_utmp_name)
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free ((void *) utmp_file_name);
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utmp_file_name = fname;
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return 1;
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}
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