GC !__DragonFly__ section.
[dragonfly.git] / sbin / comcontrol / comcontrol.c
CommitLineData
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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.
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27 *
28 * $FreeBSD: src/sbin/comcontrol/comcontrol.c,v 1.8.2.2 2001/08/01 06:01:51 obrien Exp $
29 * $DragonFly: src/sbin/comcontrol/comcontrol.c,v 1.2 2003/06/17 04:27:32 dillon Exp $
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30 */
31
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32#include <ctype.h>
33#include <err.h>
34#include <errno.h>
35#include <fcntl.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <unistd.h>
40#include <sys/types.h>
41#include <sys/ioctl.h>
42
43static void
44usage()
45{
46 fprintf(stderr,
47 "usage: comcontrol <filename> [dtrwait <n>] [drainwait <n>]\n");
48 exit(1);
49}
50
51int
52main(int argc, char *argv[])
53{
54 int fd;
55 int res = 0;
56 int print_dtrwait = 1, print_drainwait = 1;
57 int dtrwait = -1, drainwait = -1;
58
59 if (argc < 2)
60 usage();
61
62 if (strcmp(argv[1], "-") == 0)
63 fd = STDIN_FILENO;
64 else {
65 fd = open(argv[1], O_RDONLY|O_NONBLOCK, 0);
66 if (fd < 0) {
67 warn("couldn't open file %s", argv[1]);
68 return 1;
69 }
70 }
71 if (argc == 2) {
72 if (ioctl(fd, TIOCMGDTRWAIT, &dtrwait) < 0) {
73 print_dtrwait = 0;
74 if (errno != ENOTTY) {
75 res = 1;
76 warn("TIOCMGDTRWAIT");
77 }
78 }
79 if (ioctl(fd, TIOCGDRAINWAIT, &drainwait) < 0) {
80 print_drainwait = 0;
81 if (errno != ENOTTY) {
82 res = 1;
83 warn("TIOCGDRAINWAIT");
84 }
85 }
86 if (print_dtrwait)
87 printf("dtrwait %d ", dtrwait);
88 if (print_drainwait)
89 printf("drainwait %d ", drainwait);
90 printf("\n");
91 } else {
92 while (argv[2] != NULL) {
93 if (!strcmp(argv[2],"dtrwait")) {
94 if (dtrwait >= 0)
95 usage();
96 if (argv[3] == NULL || !isdigit(argv[3][0]))
97 usage();
98 dtrwait = atoi(argv[3]);
99 argv += 2;
100 } else if (!strcmp(argv[2],"drainwait")) {
101 if (drainwait >= 0)
102 usage();
103 if (argv[3] == NULL || !isdigit(argv[3][0]))
104 usage();
105 drainwait = atoi(argv[3]);
106 argv += 2;
107 } else
108 usage();
109 }
110 if (dtrwait >= 0) {
111 if (ioctl(fd, TIOCMSDTRWAIT, &dtrwait) < 0) {
112 res = 1;
113 warn("TIOCMSDTRWAIT");
114 }
115 }
116 if (drainwait >= 0) {
117 if (ioctl(fd, TIOCSDRAINWAIT, &drainwait) < 0) {
118 res = 1;
119 warn("TIOCSDRAINWAIT");
120 }
121 }
122 }
123
124 close(fd);
125 return res;
126}