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      1 /* $NetBSD: wsconscfg.c,v 1.18 2017/05/04 16:26:10 sevan Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1999
      5  *	Matthias Drochner.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 #include <stdio.h>
     31 #include <stdlib.h>
     32 #include <fcntl.h>
     33 #include <unistd.h>
     34 #include <sys/types.h>
     35 #include <sys/ioctl.h>
     36 #include <err.h>
     37 #include <errno.h>
     38 
     39 #include <dev/wscons/wsconsio.h>
     40 #include <dev/wscons/wsdisplay_usl_io.h>
     41 
     42 #define DEFDEV "/dev/ttyEcfg"
     43 
     44 static void usage(void) __dead;
     45 
     46 static void
     47 usage(void)
     48 {
     49 	const char *p = getprogname();
     50 	(void)fprintf(stderr,
     51 	     "Usage: %s [-e emul] [-f ctldev] [-t type] index\n"
     52 	     "\t%s -d [-F] [-f ctldev] index\n"
     53 	     "\t%s -g [-f ctldev]\n"
     54 	     "\t%s -k | -m [-d] [-f ctldev] [index]\n"
     55 	     "\t%s -s [-f ctldev] index\n", p, p, p, p, p);
     56 	exit(1);
     57 }
     58 
     59 int
     60 main(int argc, char **argv)
     61 {
     62 	const char *wsdev;
     63 	int c, delete, kbd, idx, wsfd, swtch, get, mux;
     64 	struct wsdisplay_addscreendata asd;
     65 	struct wsdisplay_delscreendata dsd;
     66 	struct wsmux_device wmd;
     67 
     68 	setprogname(argv[0]);
     69 	wsdev = DEFDEV;
     70 	delete = 0;
     71 	kbd = 0;
     72 	mux = 0;
     73 	swtch = 0;
     74 	idx = -1;
     75 	get = 0;
     76 	asd.screentype = 0;
     77 	asd.emul = 0;
     78 	dsd.flags = 0;
     79 
     80 	while ((c = getopt(argc, argv, "de:Ff:gkmst:")) != -1) {
     81 		switch (c) {
     82 		case 'd':
     83 			delete++;
     84 			break;
     85 		case 'e':
     86 			asd.emul = optarg;
     87 			break;
     88 		case 'F':
     89 			dsd.flags |= WSDISPLAY_DELSCR_FORCE;
     90 			break;
     91 		case 'f':
     92 			wsdev = optarg;
     93 			break;
     94 		case 'g':
     95 			get++;
     96 			break;
     97 		case 'k':
     98 			kbd++;
     99 			break;
    100 		case 'm':
    101 			mux++;
    102 			kbd++;
    103 			break;
    104 		case 's':
    105 			swtch++;
    106 			break;
    107 		case 't':
    108 			asd.screentype = optarg;
    109 			break;
    110 		case '?':
    111 		default:
    112 			usage();
    113 			break;
    114 		}
    115 	}
    116 	argc -= optind;
    117 	argv += optind;
    118 
    119 	if (!get || argc != 0) {
    120 		if ((kbd || swtch) ? (argc > 1) : (argc != 1))
    121 			usage();
    122 
    123 		if (argc > 0 && sscanf(argv[0], "%d", &idx) != 1)
    124 			errx(1, "invalid index");
    125 	}
    126 	if ((wsfd = open(wsdev, get ? O_RDONLY : O_RDWR)) == -1)
    127 		err(EXIT_FAILURE, "Cannot open `%s'", wsdev);
    128 
    129 
    130 	if (swtch) {
    131 		if (ioctl(wsfd, VT_ACTIVATE, idx) == -1)
    132 		    err(EXIT_FAILURE, "Cannot switch to %d", idx);
    133 	} else if (get) {
    134 		if (ioctl(wsfd, VT_GETACTIVE, &idx) == -1)
    135 		    err(EXIT_FAILURE, "Cannot get current screen");
    136 		(void)printf("%d\n", idx);
    137 	} else if (kbd) {
    138 		wmd.type = mux ? WSMUX_MUX : WSMUX_KBD;
    139 		wmd.idx = idx;
    140 		if (delete) {
    141 			if (ioctl(wsfd, WSMUX_REMOVE_DEVICE, &wmd) == -1)
    142 				err(EXIT_FAILURE, "WSMUX_REMOVE_DEVICE");
    143 		} else {
    144 			if (ioctl(wsfd, WSMUX_ADD_DEVICE, &wmd) == -1)
    145 				err(EXIT_FAILURE, "WSMUX_ADD_DEVICE");
    146 		}
    147 	} else if (delete) {
    148 		dsd.idx = idx;
    149 		if (ioctl(wsfd, WSDISPLAYIO_DELSCREEN, &dsd) == -1)
    150 			err(EXIT_FAILURE, "WSDISPLAYIO_DELSCREEN");
    151 	} else {
    152 		asd.idx = idx;
    153 		if (ioctl(wsfd, WSDISPLAYIO_ADDSCREEN, &asd) == -1) {
    154 			if (errno == EBUSY)
    155 				errx(EXIT_FAILURE,
    156 				    "screen %d is already configured", idx);
    157 			else
    158 				err(EXIT_FAILURE, "WSDISPLAYIO_ADDSCREEN");
    159 		}
    160 	}
    161 
    162 	return 0;
    163 }
    164