xref: /freebsd/lib/libulog/utempter.c (revision 1d386b48a555f61cb7325543adbbb5c3f3407a66)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 #include <sys/cdefs.h>
30 #include "ulog.h"
31 #include "utempter.h"
32 
33 static int last_fd = -1;
34 
35 int
utempter_add_record(int fd,const char * host)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
utempter_remove_added_record(void)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
utempter_remove_record(int fd)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
addToUtmp(const char * pty __unused,const char * host,int fd)66 addToUtmp(const char *pty __unused, const char *host, int fd)
67 {
68 
69 	utempter_add_record(fd, host);
70 }
71 
72 void
removeFromUtmp(void)73 removeFromUtmp(void)
74 {
75 
76 	utempter_remove_added_record();
77 }
78 
79 void
removeLineFromUtmp(const char * pty __unused,int fd)80 removeLineFromUtmp(const char *pty __unused, int fd)
81 {
82 
83 	utempter_remove_record(fd);
84 }
85