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 #pragma ident "%Z%%M% %I% %E% SMI" 41 42 /*LINTLIBRARY*/ 43 44 #include <sys/types.h> 45 #include "curses_inc.h" 46 #include <fcntl.h> 47 48 /* 49 * Set the current time-out period for getting input. 50 * 51 * delay: < 0 for infinite delay (blocking read) 52 * = 0 for no delay read 53 * > 0 to specify a period in millisecs to wait 54 * for input, then return '\0' if none comes 55 */ 56 57 static void _setblock(int), _settimeout(int); 58 59 int 60 ttimeout(int delay) 61 { 62 if (cur_term->_inputfd < 0) 63 return (ERR); 64 65 if (delay < 0) 66 delay = -1; 67 68 if (cur_term->_delay == delay) 69 goto good; 70 71 #ifdef SYSV 72 if (delay > 0) { 73 if (cur_term->_delay < 0) 74 _setblock(-delay); 75 _settimeout(delay); 76 } else 77 if ((delay + cur_term->_delay) == -1) 78 _setblock(delay); 79 else { 80 if (delay < 0) 81 _setblock(delay); 82 _settimeout(delay); 83 } 84 #else /* SYSV */ 85 cbreak(); 86 #endif /* SYSV */ 87 88 cur_term->_delay = delay; 89 good: 90 return (OK); 91 } 92 93 #ifdef SYSV 94 /* set the terminal to nodelay (==0) or block(<0) */ 95 static void 96 _setblock(int block) 97 { 98 int flags = fcntl(cur_term->_inputfd, F_GETFL, 0); 99 100 if (block < 0) 101 flags &= ~O_NDELAY; 102 else 103 flags |= O_NDELAY; 104 105 (void) fcntl(cur_term->_inputfd, F_SETFL, flags); 106 } 107 108 /* 109 * set the terminal to timeout in t milliseconds, 110 * rounded up to the nearest 10th of a second. 111 */ 112 static void 113 _settimeout(int num) 114 { 115 PROGTTYS.c_lflag &= ~ICANON; 116 if (num > 0) { 117 PROGTTYS.c_cc[VMIN] = 0; 118 PROGTTYS.c_cc[VTIME] = (num > 25500) ? 255 : (num + 99) / 100; 119 cur_term->_fl_rawmode = 3; 120 } else { 121 PROGTTYS.c_cc[VMIN] = 1; 122 PROGTTYS.c_cc[VTIME] = 0; 123 cur_term->_fl_rawmode = 1; 124 } 125 (void) reset_prog_mode(); 126 } 127 #endif /* SYSV */ 128