52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Copyright (C) 1996 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <unistd.h>
|
|
#include <utmp.h>
|
|
|
|
|
|
int
|
|
__getutent_r (struct utmp **utmp, struct utmp_data *utmp_data)
|
|
{
|
|
/* Open utmp file if not already done. */
|
|
if (utmp_data->ut_fd == -1)
|
|
{
|
|
setutent_r (utmp_data);
|
|
if (utmp_data->ut_fd == -1)
|
|
return -1;
|
|
}
|
|
|
|
/* Position file correctly. */
|
|
if (lseek (utmp_data->ut_fd, utmp_data->loc_utmp, SEEK_SET) == -1)
|
|
return -1;
|
|
|
|
/* Read the next entry. */
|
|
if (read (utmp_data->ut_fd, &utmp_data->ubuf, sizeof (struct utmp))
|
|
!= sizeof (struct utmp))
|
|
return -1;
|
|
|
|
/* Update position pointer. */
|
|
utmp_data->loc_utmp += sizeof (struct utmp);
|
|
|
|
*utmp = &utmp_data->ubuf;
|
|
|
|
return 0;
|
|
}
|
|
weak_alias (__getutent_r, getutent_r)
|