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 1997 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * University Copyright- Copyright (c) 1982, 1986, 1988 32 * The Regents of the University of California 33 * All Rights Reserved 34 * 35 * University Acknowledgment- Portions of this document are derived from 36 * software developed by the University of California, Berkeley, and its 37 * contributors. 38 */ 39 40 /*LINTLIBRARY*/ 41 42 #include <sys/types.h> 43 #include "curses_inc.h" 44 #include <fcntl.h> 45 46 /* 47 * Set the current time-out period for getting input. 48 * 49 * delay: < 0 for infinite delay (blocking read) 50 * = 0 for no delay read 51 * > 0 to specify a period in millisecs to wait 52 * for input, then return '\0' if none comes 53 */ 54 55 static void _setblock(int), _settimeout(int); 56 57 int 58 ttimeout(int delay) 59 { 60 if (cur_term->_inputfd < 0) 61 return (ERR); 62 63 if (delay < 0) 64 delay = -1; 65 66 if (cur_term->_delay == delay) 67 goto good; 68 69 #ifdef SYSV 70 if (delay > 0) { 71 if (cur_term->_delay < 0) 72 _setblock(-delay); 73 _settimeout(delay); 74 } else 75 if ((delay + cur_term->_delay) == -1) 76 _setblock(delay); 77 else { 78 if (delay < 0) 79 _setblock(delay); 80 _settimeout(delay); 81 } 82 #else /* SYSV */ 83 cbreak(); 84 #endif /* SYSV */ 85 86 cur_term->_delay = delay; 87 good: 88 return (OK); 89 } 90 91 #ifdef SYSV 92 /* set the terminal to nodelay (==0) or block(<0) */ 93 static void 94 _setblock(int block) 95 { 96 int flags = fcntl(cur_term->_inputfd, F_GETFL, 0); 97 98 if (block < 0) 99 flags &= ~O_NDELAY; 100 else 101 flags |= O_NDELAY; 102 103 (void) fcntl(cur_term->_inputfd, F_SETFL, flags); 104 } 105 106 /* 107 * set the terminal to timeout in t milliseconds, 108 * rounded up to the nearest 10th of a second. 109 */ 110 static void 111 _settimeout(int num) 112 { 113 PROGTTYS.c_lflag &= ~ICANON; 114 if (num > 0) { 115 PROGTTYS.c_cc[VMIN] = 0; 116 PROGTTYS.c_cc[VTIME] = (num > 25500) ? 255 : (num + 99) / 100; 117 cur_term->_fl_rawmode = 3; 118 } else { 119 PROGTTYS.c_cc[VMIN] = 1; 120 PROGTTYS.c_cc[VTIME] = 0; 121 cur_term->_fl_rawmode = 1; 122 } 123 (void) reset_prog_mode(); 124 } 125 #endif /* SYSV */ 126