blob: 90224afb88b7a13d326686e798319319a8b5b883 (
plain)
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
75
|
/* Copyright (C) 1997-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997.
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/>. */
#include <libc-lock.h>
#include <stdlib.h>
#include <string.h>
#include <utmp.h>
#include "utmp-private.h"
/* This is the default name. */
static const char default_file_name[] = _PATH_UTMP;
/* Current file name. */
const char *__libc_utmp_file_name = (const char *) default_file_name;
/* We have to use the lock in getutent_r.c. */
__libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
int
__utmpname (const char *file)
{
int result = -1;
__libc_lock_lock (__libc_utmp_lock);
/* Close the old file. */
__libc_endutent ();
if (strcmp (file, __libc_utmp_file_name) != 0)
{
if (strcmp (file, default_file_name) == 0)
{
free ((char *) __libc_utmp_file_name);
__libc_utmp_file_name = default_file_name;
}
else
{
char *file_name = __strdup (file);
if (file_name == NULL)
/* Out of memory. */
goto done;
if (__libc_utmp_file_name != default_file_name)
free ((char *) __libc_utmp_file_name);
__libc_utmp_file_name = file_name;
}
}
result = 0;
done:
__libc_lock_unlock (__libc_utmp_lock);
return result;
}
weak_alias (__utmpname, utmpname)
|
