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
31 #pragma ident "%Z%%M% %I% %E% SMI"
32
33 #include <unistd.h>
34 #include <string.h>
35 #include <sys/termios.h>
36 /*--------------------------------------------------------- */
37 /* the follwing are here so we can use routines in ulockf.c */
38 int Debug = 0;
39 char *Bnptr;
40 /* dummies for using uucp .o routines */
41 /*VARARGS*/
42 /*ARGSUSED*/
43 void
assert(char * s1,char * s2,int i1,char * s3,int i2)44 assert(char *s1, char *s2, int i1, char *s3, int i2)
45 {}
46
47 void
cleanup()48 cleanup(){}
49
50 /*ARGSUSED*/
51 void
logent(char * s1,char * s2)52 logent(char *s1, char *s2)
53 {} /* so we can load ulockf() */
54 /*---------------------------------------------------------- */
55 extern int lockf();
56
57 /*
58 * lastname - If the path name starts with "/dev/",
59 * return the rest of the string.
60 * - Otherwise, return the last token of the path name
61 */
62 char *
lastname(char * name)63 lastname(char *name)
64 {
65 char *sp, *p;
66
67 sp = name;
68 if (strncmp(sp, "/dev/", 5) == 0)
69 sp += 5;
70 else
71 while ((p = (char *)strchr(sp,'/')) != (char *)NULL) {
72 sp = ++p;
73 }
74 return (sp);
75 }
76
77 /*
78 * tm_lock(fd) - set advisory lock on the device
79 */
80 int
tm_lock(int fd)81 tm_lock(int fd)
82 {
83 extern int fd_mklock();
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 extern int fd_cklock();
94 return (fd_cklock(fd));
95 }
96
97 /*
98 * check_session(fd) - check if a session established on fd
99 * return 1 if session exists, otherwise, return 0.
100 *
101 */
102 int
check_session(int fd)103 check_session(int fd)
104 {
105 pid_t sid;
106
107 if (ioctl(fd, TIOCGSID, &sid) == -1)
108 return(0);
109 else if (sid == 0)
110 return(0);
111 else
112 return(1);
113 }
114