1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 #include <unistd.h>
31 #include <string.h>
32 #include <sys/termios.h>
33 #include "tmextern.h"
34
35 /* -------------------------------------------------------- */
36 /* the follwing are here so we can use routines in ulockf.c */
37 int Debug = 0;
38 char *Bnptr;
39 /* dummies for using uucp .o routines */
40 /*VARARGS*/
41 /*ARGSUSED*/
42 void
assert(char * s1,char * s2,int i1,char * s3,int i2)43 assert(char *s1, char *s2, int i1, char *s3, int i2)
44 {
45 }
46
47 void
cleanup(void)48 cleanup(void)
49 {
50 }
51
52 void
logent(char * s1 __unused,char * s2 __unused)53 logent(char *s1 __unused, char *s2 __unused)
54 {
55 /* so we can load ulockf() */
56 }
57
58 /*
59 * lastname - If the path name starts with "/dev/",
60 * return the rest of the string.
61 * - Otherwise, return the last token of the path name
62 */
63 char *
lastname(char * name)64 lastname(char *name)
65 {
66 char *sp, *p;
67
68 sp = name;
69 if (strncmp(sp, "/dev/", 5) == 0)
70 sp += 5;
71 else
72 while ((p = (char *)strchr(sp, '/')) != NULL) {
73 sp = ++p;
74 }
75 return (sp);
76 }
77
78 /*
79 * tm_lock(fd) - set advisory lock on the device
80 */
81 int
tm_lock(int fd)82 tm_lock(int fd)
83 {
84 return (fd_mklock(fd));
85 }
86
87 /*
88 * tm_checklock - check if advisory lock is on
89 */
90 int
tm_checklock(int fd)91 tm_checklock(int fd)
92 {
93 return (fd_cklock(fd));
94 }
95
96 /*
97 * check_session(fd) - check if a session established on fd
98 * return 1 if session exists, otherwise, return 0.
99 *
100 */
101 int
check_session(int fd)102 check_session(int fd)
103 {
104 pid_t sid;
105
106 if (ioctl(fd, TIOCGSID, &sid) == -1)
107 return (0);
108 else if (sid == 0)
109 return (0);
110 else
111 return (1);
112 }
113