1 /*- 2 * Copyright (c) 1992 Christopher G. Demetriou 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote 14 * products derived from this software without specific written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef lint 30 static const char rcsid[] = 31 "$FreeBSD$"; 32 #endif /* not lint */ 33 34 #include <ctype.h> 35 #include <err.h> 36 #include <fcntl.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <unistd.h> 40 #include <sys/types.h> 41 #include <sys/ioctl.h> 42 43 static void 44 usage() 45 { 46 fprintf(stderr, 47 "usage: comcontrol <filename> [dtrwait <n>] [drainwait <n>]\n"); 48 exit(1); 49 } 50 51 int 52 main(int argc, char *argv[]) 53 { 54 int fd; 55 int res = 0; 56 int dtrwait = -1, drainwait = -1; 57 58 if (argc < 2) 59 usage(); 60 61 fd = open(argv[1], O_RDONLY|O_NONBLOCK, 0); 62 if (fd < 0) { 63 warn("couldn't open file %s", argv[1]); 64 return 1; 65 } 66 67 if (argc == 2) { 68 if (ioctl(fd, TIOCMGDTRWAIT, &dtrwait) < 0) { 69 res = 1; 70 warn("TIOCMGDTRWAIT"); 71 } 72 if (ioctl(fd, TIOCGDRAINWAIT, &drainwait) < 0) { 73 res = 1; 74 warn("TIOCGDRAINWAIT"); 75 } 76 printf("dtrwait %d drainwait %d\n", dtrwait, drainwait); 77 } else { 78 while (argv[2] != NULL) { 79 if (!strcmp(argv[2],"dtrwait")) { 80 if (dtrwait >= 0) 81 usage(); 82 if (argv[3] == NULL || !isdigit(argv[3][0])) 83 usage(); 84 dtrwait = atoi(argv[3]); 85 argv += 2; 86 } else if (!strcmp(argv[2],"drainwait")) { 87 if (drainwait >= 0) 88 usage(); 89 if (argv[3] == NULL || !isdigit(argv[3][0])) 90 usage(); 91 drainwait = atoi(argv[3]); 92 argv += 2; 93 } else 94 usage(); 95 } 96 if (dtrwait >= 0) { 97 if (ioctl(fd, TIOCMSDTRWAIT, &dtrwait) < 0) { 98 res = 1; 99 warn("TIOCMSDTRWAIT"); 100 } 101 } 102 if (drainwait >= 0) { 103 if (ioctl(fd, TIOCSDRAINWAIT, &drainwait) < 0) { 104 res = 1; 105 warn("TIOCSDRAINWAIT"); 106 } 107 } 108 } 109 110 close(fd); 111 return res; 112 } 113