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wsmuxctl.c revision 1.12 
      1 /* $NetBSD: wsmuxctl.c,v 1.12 2019/02/03 03:19:31 mrg Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Author: Lennart Augustsson <augustss (at) carlstedt.se>
      8  *         Carlstedt Research & Technology
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <stdio.h>
     33 #include <stdlib.h>
     34 #include <fcntl.h>
     35 #include <unistd.h>
     36 #include <ctype.h>
     37 #include <sys/types.h>
     38 #include <sys/ioctl.h>
     39 #include <err.h>
     40 #include <errno.h>
     41 
     42 #include <dev/wscons/wsconsio.h>
     43 
     44 __dead static void usage(void);
     45 
     46 static const char *ctlpath = "/dev/wsmuxctl";
     47 
     48 static const char *devnames[] = { "?", "wsmouse", "wskbd", "wsmux" };
     49 
     50 static void
     51 usage(void)
     52 {
     53 
     54 	fprintf(stderr, "usage: %s [-a dev] -f wsmux [-l] [-L] [-r dev]\n",
     55 		    getprogname());
     56 	exit(1);
     57 }
     58 
     59 static void
     60 parsedev(const char *dev, struct wsmux_device *mdev)
     61 {
     62 	if (sscanf(dev, "wsmouse%d", &mdev->idx) == 1) {
     63 		mdev->type = WSMUX_MOUSE;
     64 		return;
     65 	}
     66 	if (sscanf(dev, "wskbd%d", &mdev->idx) == 1) {
     67 		mdev->type = WSMUX_KBD;
     68 		return;
     69 	}
     70 	if (sscanf(dev, "wsmux%d", &mdev->idx) == 1) {
     71 		mdev->type = WSMUX_MUX;
     72 		return;
     73 	}
     74 	errx(1, "bad device: `%s', use wsmouse, wskdb, or wsmux", dev);
     75 }
     76 
     77 static void
     78 listdevs(int fd, int rec, int ind)
     79 {
     80 	int i, rfd;
     81 	char buf[100];
     82 	struct wsmux_device_list devs;
     83 
     84 	if (ioctl(fd, WSMUXIO_LIST_DEVICES, &devs) < 0)
     85 		err(1, "WSMUXIO_LIST_DEVICES");
     86 	for (i = 0; i < devs.ndevices; i++) {
     87 		printf("%*s%s%d\n", ind, "", devnames[devs.devices[i].type],
     88 		       devs.devices[i].idx);
     89 		if (rec && devs.devices[i].type == WSMUX_MUX) {
     90 			snprintf(buf, sizeof(buf), "%s%d", ctlpath,
     91 			    devs.devices[i].idx);
     92 			rfd = open(buf, O_WRONLY, 0);
     93 			if (rfd < 0)
     94 				warn("%s", buf);
     95 			listdevs(rfd, rec, ind+2);
     96 			close(rfd);
     97 		}
     98 	}
     99 }
    100 
    101 int
    102 main(int argc, char **argv)
    103 {
    104 	char *wsdev, *dev;
    105 	int wsfd, list, c, add, rem, recursive;
    106 	struct wsmux_device mdev;
    107 	char buf[100];
    108 
    109 	wsdev = NULL;
    110 	dev = NULL;
    111 	add = 0;
    112 	rem = 0;
    113 	list = 0;
    114 	recursive = 0;
    115 
    116 	while ((c = getopt(argc, argv, "a:f:lLr:")) != -1) {
    117 		switch (c) {
    118 		case 'a':
    119 			if (dev)
    120 				usage();
    121 			dev = optarg;
    122 			add++;
    123 			break;
    124 		case 'r':
    125 			if (dev)
    126 				usage();
    127 			dev = optarg;
    128 			rem++;
    129 			break;
    130 		case 'f':
    131 			wsdev = optarg;
    132 			break;
    133 		case 'L':
    134 			recursive++;
    135 			/* FALLTHROUGH */
    136 		case 'l':
    137 			list++;
    138 			break;
    139 		case '?':
    140 		default:
    141 			usage();
    142 			break;
    143 		}
    144 	}
    145 	argc -= optind;
    146 	argv += optind;
    147 
    148 	if (wsdev == NULL)
    149 		usage();
    150 
    151 	wsfd = open(wsdev, O_WRONLY, 0);
    152 	if (wsfd < 0) {
    153 		if (isdigit((unsigned char)wsdev[0])) {
    154 			snprintf(buf, sizeof(buf), "%s%s", ctlpath, wsdev);
    155 			wsdev = buf;
    156 			wsfd = open(wsdev, O_WRONLY, 0);
    157 		}
    158 		if (wsfd < 0)
    159 			err(2, "%s", wsdev);
    160 	}
    161 
    162 	if (list) {
    163 		if (add || rem)
    164 			usage();
    165 		listdevs(wsfd, recursive, 0);
    166 		exit(0);
    167 	}
    168 
    169 	if (add) {
    170 		parsedev(dev, &mdev);
    171 		if (ioctl(wsfd, WSMUXIO_ADD_DEVICE, &mdev) < 0)
    172 			err(1, "WSMUXIO_ADD_DEVICE");
    173 	}
    174 
    175 	if (rem) {
    176 		parsedev(dev, &mdev);
    177 		if (ioctl(wsfd, WSMUXIO_REMOVE_DEVICE, &mdev) < 0)
    178 			err(1, "WSMUXIO_REMOVE_DEVICE");
    179 	}
    180 
    181 	close(wsfd);
    182 	return (0);
    183 }
    184