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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
.\" Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd October 11, 2010
.Dt ULOG_LOGIN 3
.Os
.Sh NAME
.Nm ulog_login ,
.Nm ulog_login_pseudo ,
.Nm ulog_logout ,
.Nm ulog_logout_pseudo
.Nd manage user login records
.Sh LIBRARY
.Lb libulog
.Sh SYNOPSIS
.In ulog.h
.Ft void
.Fn ulog_login "const char *line" "const char *user" "const char *host"
.Ft void
.Fn ulog_login_pseudo "int fd" "const char *host"
.Ft void
.Fn ulog_logout "const char *line"
.Ft void
.Fn ulog_logout_pseudo "int fd"
.Sh DESCRIPTION
The
.Fn ulog_login
and
.Fn ulog_login_pseudo
functions register a login session on a TTY.
The
.Fn ulog_login
function adds an entry for TTY
.Fa line
and username
.Fa user .
The
.Fn ulog_login_pseudo
function uses file descriptor to a pseudo-terminal master device
.Fa fd
to determine the TTY name, while using the username belonging to the
real user ID of the calling process.
The optional
.Fa host
argument denotes a remote hostname, in case the login session is
provided by a network service.
.Pp
The
.Fn ulog_logout
and
.Fn ulog_logout_pseudo
functions mark the previously registered login session as being
terminated.
.Pp
Because the
.Fa line
and
.Fa user
arguments of
.Fn ulog_login
and
.Fn ulog_logout
cannot be trusted, these functions require administrative privileges.
The
.Fn ulog_login_pseudo
and
.Fn ulog_logout_pseudo
functions spawn a privileged process to perform the actual logging.
.Sh SEE ALSO
.Xr getuid 2 ,
.Xr posix_openpt 2 ,
.Xr ptsname 3 ,
.Xr pututxline 3
.Sh HISTORY
These functions appeared in
.Fx 9.0 .
|
