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