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 */ 38int Debug = 0; 39char *Bnptr; 40/* dummies for using uucp .o routines */ 41/*VARARGS*/ 42/*ARGSUSED*/ 43void 44assert(char *s1, char *s2, int i1, char *s3, int i2) 45{} 46 47void 48cleanup(){} 49 50/*ARGSUSED*/ 51void 52logent(char *s1, char *s2) 53{} /* so we can load ulockf() */ 54/*---------------------------------------------------------- */ 55extern 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 */ 62char * 63lastname(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 */ 80int 81tm_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 */ 90int 91tm_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 */ 102int 103check_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