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984263bc MD |
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. | |
1de703da MD |
27 | * |
28 | * $FreeBSD: src/sbin/comcontrol/comcontrol.c,v 1.8.2.2 2001/08/01 06:01:51 obrien Exp $ | |
347d6a1d | 29 | * $DragonFly: src/sbin/comcontrol/comcontrol.c,v 1.3 2005/03/20 14:07:43 liamfoy Exp $ |
984263bc MD |
30 | */ |
31 | ||
347d6a1d LF |
32 | #include <sys/types.h> |
33 | #include <sys/ioctl.h> | |
34 | ||
984263bc MD |
35 | #include <ctype.h> |
36 | #include <err.h> | |
37 | #include <errno.h> | |
38 | #include <fcntl.h> | |
39 | #include <stdio.h> | |
40 | #include <stdlib.h> | |
41 | #include <string.h> | |
42 | #include <unistd.h> | |
984263bc MD |
43 | |
44 | static void | |
347d6a1d | 45 | usage(void) |
984263bc MD |
46 | { |
47 | fprintf(stderr, | |
48 | "usage: comcontrol <filename> [dtrwait <n>] [drainwait <n>]\n"); | |
49 | exit(1); | |
50 | } | |
51 | ||
52 | int | |
53 | main(int argc, char *argv[]) | |
54 | { | |
347d6a1d LF |
55 | int fd; |
56 | int res = 0; | |
57 | int print_dtrwait = 1, print_drainwait = 1; | |
58 | int dtrwait = -1, drainwait = -1; | |
984263bc MD |
59 | |
60 | if (argc < 2) | |
61 | usage(); | |
62 | ||
347d6a1d | 63 | if (strcmp(argv[1], "-") == 0) { |
984263bc | 64 | fd = STDIN_FILENO; |
347d6a1d LF |
65 | } else { |
66 | fd = open(argv[1], O_RDONLY | O_NONBLOCK, 0); | |
984263bc MD |
67 | if (fd < 0) { |
68 | warn("couldn't open file %s", argv[1]); | |
69 | return 1; | |
70 | } | |
71 | } | |
72 | if (argc == 2) { | |
73 | if (ioctl(fd, TIOCMGDTRWAIT, &dtrwait) < 0) { | |
74 | print_dtrwait = 0; | |
75 | if (errno != ENOTTY) { | |
76 | res = 1; | |
77 | warn("TIOCMGDTRWAIT"); | |
78 | } | |
79 | } | |
80 | if (ioctl(fd, TIOCGDRAINWAIT, &drainwait) < 0) { | |
81 | print_drainwait = 0; | |
82 | if (errno != ENOTTY) { | |
83 | res = 1; | |
84 | warn("TIOCGDRAINWAIT"); | |
85 | } | |
86 | } | |
87 | if (print_dtrwait) | |
88 | printf("dtrwait %d ", dtrwait); | |
89 | if (print_drainwait) | |
90 | printf("drainwait %d ", drainwait); | |
91 | printf("\n"); | |
92 | } else { | |
93 | while (argv[2] != NULL) { | |
347d6a1d | 94 | if (strcmp(argv[2],"dtrwait") == 0) { |
984263bc MD |
95 | if (dtrwait >= 0) |
96 | usage(); | |
97 | if (argv[3] == NULL || !isdigit(argv[3][0])) | |
98 | usage(); | |
99 | dtrwait = atoi(argv[3]); | |
100 | argv += 2; | |
347d6a1d | 101 | } else if (strcmp(argv[2],"drainwait") == 0) { |
984263bc MD |
102 | if (drainwait >= 0) |
103 | usage(); | |
104 | if (argv[3] == NULL || !isdigit(argv[3][0])) | |
105 | usage(); | |
106 | drainwait = atoi(argv[3]); | |
107 | argv += 2; | |
347d6a1d | 108 | } else { |
984263bc | 109 | usage(); |
347d6a1d | 110 | } |
984263bc MD |
111 | } |
112 | if (dtrwait >= 0) { | |
113 | if (ioctl(fd, TIOCMSDTRWAIT, &dtrwait) < 0) { | |
114 | res = 1; | |
115 | warn("TIOCMSDTRWAIT"); | |
116 | } | |
117 | } | |
118 | if (drainwait >= 0) { | |
119 | if (ioctl(fd, TIOCSDRAINWAIT, &drainwait) < 0) { | |
120 | res = 1; | |
121 | warn("TIOCSDRAINWAIT"); | |
122 | } | |
123 | } | |
124 | } | |
125 | ||
126 | close(fd); | |
127 | return res; | |
128 | } |