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 43 assert(char *s1, char *s2, int i1, char *s3, int i2) 44 { 45 } 46 47 void 48 cleanup(void) 49 { 50 } 51 52 void 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 * 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 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 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 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