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https://github.com/freebsd/freebsd-src.git
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Warner Losh
4b4cf0d52c
Nothing uses dtrwait anymore. This was elimianted with the tty mpsafe rewrite for FreeBSD 8. Only these zombie symbols and functionality remain. GC them. Add comcontrol to the list things to remove in 16.0. Sponsored by: Netflix Reviewed by: kevans, emaste Differential Revision: https://reviews.freebsd.org/D52317
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 1992 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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static void usage(void) __dead2;
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: comcontrol <filename> [drainwait <n>]\n");
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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int fd;
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int res = 0;
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int print_drainwait = 1;
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int drainwait = -1;
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if (argc < 2)
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usage();
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if (strcmp(argv[1], "-") == 0)
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fd = STDIN_FILENO;
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else {
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fd = open(argv[1], O_RDONLY|O_NONBLOCK, 0);
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if (fd < 0) {
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warn("couldn't open file %s", argv[1]);
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return 1;
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}
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}
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if (argc == 2) {
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if (ioctl(fd, TIOCGDRAINWAIT, &drainwait) < 0) {
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print_drainwait = 0;
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if (errno != ENOTTY) {
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res = 1;
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warn("TIOCGDRAINWAIT");
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}
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}
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if (print_drainwait)
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printf("drainwait %d ", drainwait);
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printf("\n");
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} else {
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while (argv[2] != NULL) {
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if (!strcmp(argv[2],"drainwait")) {
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if (drainwait >= 0)
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usage();
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if (argv[3] == NULL || !isdigit(argv[3][0]))
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usage();
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drainwait = atoi(argv[3]);
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argv += 2;
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} else
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usage();
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}
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if (drainwait >= 0) {
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if (ioctl(fd, TIOCSDRAINWAIT, &drainwait) < 0) {
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res = 1;
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warn("TIOCSDRAINWAIT");
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}
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}
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}
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close(fd);
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return res;
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}
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