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/*-
* Copyright (c) 1992 Christopher G. Demetriou
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* comcontrol.c */
#include <sys/types.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <fcntl.h>
void usage(char *progname)
{
fprintf(stderr, "usage: %s <filename> [dtrwait <n>] [drainwait <n>]\n", progname);
exit(1);
}
int main(int argc, char *argv[])
{
int fd;
int res = 0;
int dtrwait = -1, drainwait = -1;
if (argc < 2)
usage(argv[0]);
fd = open(argv[1], O_RDONLY|O_NONBLOCK, 0);
if (fd < 0) {
perror("open");
fprintf(stderr, "%s: couldn't open file %s\n", argv[0], argv[1]);
return 1;
}
if (argc == 2) {
if (ioctl(fd, TIOCMGDTRWAIT, &dtrwait) < 0) {
res = 1;
perror("TIOCMGDTRWAIT");
}
if (ioctl(fd, TIOCGDRAINWAIT, &drainwait) < 0) {
res = 1;
perror("TIOCGDRAINWAIT");
}
printf("dtrwait %d drainwait %d\n", dtrwait, drainwait);
} else {
char *prg = argv[0];
while (argv[2] != NULL) {
if (!strcmp(argv[2],"dtrwait")) {
if (dtrwait >= 0)
usage(prg);
if (argv[3] == NULL || !isdigit(argv[3][0]))
usage(prg);
dtrwait = atoi(argv[3]);
argv += 2;
} else if (!strcmp(argv[2],"drainwait")) {
if (drainwait >= 0)
usage(prg);
if (argv[3] == NULL || !isdigit(argv[3][0]))
usage(prg);
drainwait = atoi(argv[3]);
argv += 2;
} else
usage(prg);
}
if (dtrwait >= 0) {
if (ioctl(fd, TIOCMSDTRWAIT, &dtrwait) < 0) {
res = 1;
perror("TIOCMSDTRWAIT");
}
}
if (drainwait >= 0) {
if (ioctl(fd, TIOCSDRAINWAIT, &drainwait) < 0) {
res = 1;
perror("TIOCSDRAINWAIT");
}
}
}
close(fd);
return res;
}
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