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15637ed4 RG |
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 | /* comcontrol.c */ | |
30 | ||
31 | #include <sys/types.h> | |
32 | #include <sys/ioctl.h> | |
33 | #include <stdio.h> | |
c39c77c3 AC |
34 | #include <stdlib.h> |
35 | #include <ctype.h> | |
15637ed4 RG |
36 | #include <fcntl.h> |
37 | ||
38 | ||
39 | void usage(char *progname) | |
40 | { | |
c39c77c3 | 41 | fprintf(stderr, "usage: %s <filename> [[-]bidir] [dtrwait <n>]\n", progname); |
15637ed4 RG |
42 | exit(1); |
43 | } | |
44 | ||
45 | int main(int argc, char *argv[]) | |
46 | { | |
47 | int fd; | |
48 | int res; | |
c39c77c3 | 49 | int dtrwait; |
15637ed4 | 50 | |
c39c77c3 | 51 | if ((argc < 2) || (argc > 5)) usage(argv[0]); |
15637ed4 RG |
52 | |
53 | fd = open(argv[1], O_RDONLY|O_NONBLOCK, 0); | |
54 | if (fd < 0) { | |
55 | fprintf(stderr, "%s: couldn't open file %s\n", argv[0], argv[1]); | |
56 | perror("open"); | |
57 | exit(1); | |
58 | } | |
59 | ||
60 | if (argc == 2) { | |
c34ff357 AC |
61 | if (ioctl(fd, TIOCMGBIDIR, &res) >= 0) { |
62 | if (!res) printf("-"); | |
63 | printf("bidir "); | |
15637ed4 | 64 | } |
c39c77c3 AC |
65 | if (ioctl(fd, TIOCMGDTRWAIT, &dtrwait) < 0) { |
66 | perror("TIOCMGDTRWAIT"); | |
67 | exit(1); | |
68 | } | |
69 | printf("dtrwait %d\n", dtrwait); | |
15637ed4 | 70 | } else { |
c39c77c3 AC |
71 | char *prg = argv[0]; |
72 | ||
73 | res = dtrwait = -1; | |
74 | while (argv[2] != NULL) { | |
75 | if (!strcmp(argv[2],"bidir")) { | |
76 | if (res >= 0) | |
77 | usage(prg); | |
78 | res = 1; | |
79 | argv++; | |
80 | } else if (!strcmp(argv[2],"-bidir")) { | |
81 | if (res >= 0) | |
82 | usage(prg); | |
83 | res = 0; | |
84 | argv++; | |
85 | } else if (!strcmp(argv[2],"dtrwait")) { | |
86 | if (dtrwait >= 0) | |
87 | usage(prg); | |
88 | if (argv[3] == NULL || !isdigit(argv[3][0])) | |
89 | usage(prg); | |
90 | dtrwait = atoi(argv[3]); | |
91 | argv += 2; | |
92 | } else { | |
93 | usage(prg); | |
94 | } | |
95 | } | |
96 | if (res >= 0) { | |
97 | if (ioctl(fd, TIOCMSBIDIR, &res) < 0) { | |
98 | perror("TIOCMSBIDIR"); | |
99 | exit(1); | |
100 | } | |
101 | } | |
102 | if (dtrwait >= 0) { | |
103 | if (ioctl(fd, TIOCMSDTRWAIT, &dtrwait) < 0) { | |
104 | perror("TIOCMSDTRWAIT"); | |
105 | exit(1); | |
106 | } | |
15637ed4 | 107 | } |
15637ed4 RG |
108 | } |
109 | ||
110 | close(fd); | |
c39c77c3 | 111 | exit(0); |
15637ed4 | 112 | } |