1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/* 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 <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <utmp.h>
/* This is the default name. */
static const char default_utmp_name[] = _PATH_UTMP;
/* Current file name. */
static const char *utmp_file_name = (const char *) default_utmp_name;
void
setutent_r (struct utmp_data *utmp_data)
{
/* Before the UTMP_DATA is used before the first time the UT_FD
field must be set to -1. */
if (utmp_data->ut_fd == -1)
{
utmp_data->ut_fd = open (utmp_file_name, O_RDWR);
if (utmp_data->ut_fd == -1)
{
/* Hhm, read-write access did not work. Try read-only. */
utmp_data->ut_fd = open (utmp_file_name, O_RDONLY);
if (utmp_data->ut_fd == -1)
{
perror (_("while opening UTMP file"));
return;
}
}
}
/* Remember we are at beginning of file. */
utmp_data->loc_utmp = 0;
#if _HAVE_UT_TYPE - 0
utmp_data->ubuf.ut_type = UT_UNKNOWN;
#endif
}
int
utmpname (const char *file)
{
char *fname = strdup (file);
if (fname == NULL)
return 0;
if (utmp_file_name != default_utmp_name)
free ((void *) utmp_file_name);
utmp_file_name = fname;
return 1;
}
|
