xref: /freebsd/lib/libulog/utempter.c (revision 40a8ac8f62b535d30349faf28cf47106b7041b83)
1 /*-
2  * Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include "ulog.h"
31 #include "utempter.h"
32 
33 static int last_fd = -1;
34 
35 int
36 utempter_add_record(int fd, const char *host)
37 {
38 
39 	ulog_login_pseudo(fd, host);
40 	last_fd = fd;
41 	return (0);
42 }
43 
44 int
45 utempter_remove_added_record(void)
46 {
47 
48 	if (last_fd < 0)
49 		return (0);
50 	ulog_logout_pseudo(last_fd);
51 	last_fd = -1;
52 	return (0);
53 }
54 
55 int
56 utempter_remove_record(int fd)
57 {
58 
59 	ulog_logout_pseudo(fd);
60 	if (last_fd == fd)
61 		last_fd = -1;
62 	return (0);
63 }
64 
65 void
66 addToUtmp(const char *pty __unused, const char *host, int fd)
67 {
68 
69 	utempter_add_record(fd, host);
70 }
71 
72 void
73 removeFromUtmp(void)
74 {
75 
76 	utempter_remove_added_record();
77 }
78 
79 void
80 removeLineFromUtmp(const char *pty __unused, int fd)
81 {
82 
83 	utempter_remove_record(fd);
84 }
85