xref: /openbsd-src/sbin/wsconsctl/util.c (revision d22ea701e65e697b6d27c4407cbf147cfbc264ab)
1 /*	$OpenBSD: util.c,v 1.64 2017/07/21 20:38:20 bru Exp $ */
2 /*	$NetBSD: util.c,v 1.8 2000/03/14 08:11:53 sato Exp $ */
3 
4 /*-
5  * Copyright (c) 1998 The NetBSD Foundation, Inc.
6  * All rights reserved.
7  *
8  * This code is derived from software contributed to The NetBSD Foundation
9  * by Juergen Hannken-Illjes.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #include <sys/ioctl.h>
34 #include <sys/time.h>
35 #include <dev/wscons/wsconsio.h>
36 #include <dev/wscons/wsksymdef.h>
37 #include <err.h>
38 #include <stdlib.h>
39 #include <string.h>
40 #include <stdio.h>
41 #include <unistd.h>
42 #include "wsconsctl.h"
43 #include "mousecfg.h"
44 
45 #define TABLEN(t)		(sizeof(t)/sizeof(t[0]))
46 
47 extern struct wskbd_map_data kbmap;	/* from keyboard.c */
48 extern struct wskbd_map_data newkbmap;	/* from map_parse.y */
49 extern struct wsmouse_calibcoords wmcoords;	/* from mouse.c */
50 
51 struct nameint {
52 	int value;
53 	char *name;
54 };
55 
56 static const struct nameint kbtype_tab[] = {
57 	{ WSKBD_TYPE_LK201,	"lk201" },
58 	{ WSKBD_TYPE_LK401,	"lk401" },
59 	{ WSKBD_TYPE_PC_XT,	"pc-xt" },
60 	{ WSKBD_TYPE_PC_AT,	"pc-at" },
61 	{ WSKBD_TYPE_USB,	"usb" },
62 	{ WSKBD_TYPE_NEXT,	"NeXT" },
63 	{ WSKBD_TYPE_HPC_KBD,	"hpc-kbd" },
64 	{ WSKBD_TYPE_HPC_BTN,	"hpc-btn" },
65 	{ WSKBD_TYPE_ADB,	"adb" },
66 	{ WSKBD_TYPE_SUN,	"sun" },
67 	{ WSKBD_TYPE_SUN5,	"sun5" },
68 	{ WSKBD_TYPE_HIL,	"hil" },
69 	{ WSKBD_TYPE_GSC,	"hp-ps2" },
70 	{ WSKBD_TYPE_LUNA,	"luna" },
71 	{ WSKBD_TYPE_ZAURUS,	"zaurus" },
72 	{ WSKBD_TYPE_DOMAIN,	"domain" },
73 	{ WSKBD_TYPE_BLUETOOTH,	"bluetooth" },
74 	{ WSKBD_TYPE_KPC,	"kpc" },
75 	{ WSKBD_TYPE_SGI,	"sgi" },
76 };
77 
78 static const struct nameint mstype_tab[] = {
79 	{ WSMOUSE_TYPE_VSXXX,	"dec-tc" },
80 	{ WSMOUSE_TYPE_PS2,	"ps2" },
81 	{ WSMOUSE_TYPE_USB,	"usb" },
82 	{ WSMOUSE_TYPE_LMS,	"lms" },
83 	{ WSMOUSE_TYPE_MMS,	"mms" },
84 	{ WSMOUSE_TYPE_TPANEL,	"touch-panel" },
85 	{ WSMOUSE_TYPE_NEXT,	"NeXT" },
86 	{ WSMOUSE_TYPE_ARCHIMEDES, "archimedes" },
87 	{ WSMOUSE_TYPE_ADB,	"adb" },
88 	{ WSMOUSE_TYPE_HIL,	"hil" },
89 	{ WSMOUSE_TYPE_LUNA,	"luna" },
90 	{ WSMOUSE_TYPE_DOMAIN,	"domain" },
91 	{ WSMOUSE_TYPE_BLUETOOTH, "bluetooth" },
92 	{ WSMOUSE_TYPE_SUN,	"sun" },
93 	{ WSMOUSE_TYPE_SYNAPTICS, "synaptics" },
94 	{ WSMOUSE_TYPE_ALPS,	"alps" },
95 	{ WSMOUSE_TYPE_SGI,	"sgi" },
96 	{ WSMOUSE_TYPE_ELANTECH, "elantech" },
97 };
98 
99 static const struct nameint dpytype_tab[] = {
100 	{ WSDISPLAY_TYPE_UNKNOWN,	"unknown" },
101 	{ WSDISPLAY_TYPE_PM_MONO,	"dec-pm-mono" },
102 	{ WSDISPLAY_TYPE_PM_COLOR,	"dec-pm-color" },
103 	{ WSDISPLAY_TYPE_CFB,		"dec-cfb" },
104 	{ WSDISPLAY_TYPE_XCFB,		"dec-xcfb" },
105 	{ WSDISPLAY_TYPE_MFB,		"dec-mfb" },
106 	{ WSDISPLAY_TYPE_SFB,		"dec-sfb" },
107 	{ WSDISPLAY_TYPE_ISAVGA,	"vga-isa" },
108 	{ WSDISPLAY_TYPE_PCIVGA,	"vga-pci" },
109 	{ WSDISPLAY_TYPE_TGA,		"dec-tga-pci" },
110 	{ WSDISPLAY_TYPE_SFBP,		"dec-sfb+" },
111 	{ WSDISPLAY_TYPE_PCIMISC,	"generic-pci" },
112 	{ WSDISPLAY_TYPE_NEXTMONO,	"next-mono" },
113 	{ WSDISPLAY_TYPE_PX,		"dec-px" },
114 	{ WSDISPLAY_TYPE_PXG,		"dec-pxg" },
115 	{ WSDISPLAY_TYPE_TX,		"dec-tx" },
116 	{ WSDISPLAY_TYPE_HPCFB,		"generic-hpc" },
117 	{ WSDISPLAY_TYPE_VIDC,		"arm-vidc" },
118 	{ WSDISPLAY_TYPE_SPX,		"dec-spx" },
119 	{ WSDISPLAY_TYPE_GPX,		"dec-gpx" },
120 	{ WSDISPLAY_TYPE_LCG,		"dec-lcg" },
121 	{ WSDISPLAY_TYPE_VAX_MONO,	"dec-mono" },
122 	{ WSDISPLAY_TYPE_SB_P9100,	"p9100" },
123 	{ WSDISPLAY_TYPE_EGA,		"ega" },
124 	{ WSDISPLAY_TYPE_DCPVR,		"powervr" },
125 	{ WSDISPLAY_TYPE_SUN24,		"sun24" },
126 	{ WSDISPLAY_TYPE_SUNBW,		"sunbw" },
127 	{ WSDISPLAY_TYPE_STI,		"hp-sti" },
128 	{ WSDISPLAY_TYPE_SUNCG3,	"suncg3" },
129 	{ WSDISPLAY_TYPE_SUNCG6,	"suncg6" },
130 	{ WSDISPLAY_TYPE_SUNFFB,	"sunffb" },
131 	{ WSDISPLAY_TYPE_SUNCG14,	"suncg14" },
132 	{ WSDISPLAY_TYPE_SUNCG2,	"suncg2" },
133 	{ WSDISPLAY_TYPE_SUNCG4,	"suncg4" },
134 	{ WSDISPLAY_TYPE_SUNCG8,	"suncg8" },
135 	{ WSDISPLAY_TYPE_SUNTCX,	"suntcx" },
136 	{ WSDISPLAY_TYPE_AGTEN,		"agten" },
137 	{ WSDISPLAY_TYPE_XVIDEO,	"xvideo" },
138 	{ WSDISPLAY_TYPE_SUNCG12,	"suncg12" },
139 	{ WSDISPLAY_TYPE_MGX,		"mgx" },
140 	{ WSDISPLAY_TYPE_SB_P9000,	"p9000" },
141 	{ WSDISPLAY_TYPE_RFLEX,		"rasterflex" },
142 	{ WSDISPLAY_TYPE_LUNA,		"luna" },
143 	{ WSDISPLAY_TYPE_DVBOX,		"davinci" },
144 	{ WSDISPLAY_TYPE_GBOX,		"gatorbox" },
145 	{ WSDISPLAY_TYPE_RBOX,		"renaissance" },
146 	{ WSDISPLAY_TYPE_HYPERION,	"hyperion" },
147 	{ WSDISPLAY_TYPE_TOPCAT,	"topcat" },
148 	{ WSDISPLAY_TYPE_PXALCD,	"pxalcd" },
149 	{ WSDISPLAY_TYPE_MAC68K,	"mac68k" },
150 	{ WSDISPLAY_TYPE_SUNLEO,	"sunleo" },
151 	{ WSDISPLAY_TYPE_TVRX,		"tvrx" },
152 	{ WSDISPLAY_TYPE_CFXGA,		"cfxga" },
153 	{ WSDISPLAY_TYPE_LCSPX,		"dec-lcspx" },
154 	{ WSDISPLAY_TYPE_GBE,		"gbe" },
155 	{ WSDISPLAY_TYPE_LEGSS,		"dec-legss" },
156 	{ WSDISPLAY_TYPE_IFB,		"ifb" },
157 	{ WSDISPLAY_TYPE_RAPTOR,	"raptor" },
158 	{ WSDISPLAY_TYPE_DL,		"displaylink" },
159 	{ WSDISPLAY_TYPE_MACHFB,	"mach64" },
160 	{ WSDISPLAY_TYPE_GFXP,		"gfxp" },
161 	{ WSDISPLAY_TYPE_RADEONFB,	"radeon" },
162 	{ WSDISPLAY_TYPE_SMFB,		"smfb" },
163 	{ WSDISPLAY_TYPE_SISFB,		"sisfb" },
164 	{ WSDISPLAY_TYPE_ODYSSEY,	"odyssey" },
165 	{ WSDISPLAY_TYPE_IMPACT,	"impact" },
166 	{ WSDISPLAY_TYPE_GRTWO,		"grtwo" },
167 	{ WSDISPLAY_TYPE_NEWPORT,	"newport" },
168 	{ WSDISPLAY_TYPE_LIGHT,		"light" },
169 	{ WSDISPLAY_TYPE_INTELDRM,	"inteldrm" },
170 	{ WSDISPLAY_TYPE_RADEONDRM,	"radeondrm" }
171 };
172 
173 static const struct nameint kbdenc_tab[] = {
174 	KB_ENCTAB
175 };
176 
177 static const struct nameint kbdvar_tab[] = {
178 	KB_VARTAB
179 };
180 
181 char *int2name(int, int, const struct nameint *, int);
182 int name2int(char *, const struct nameint *, int);
183 void print_kmap(struct wskbd_map_data *);
184 void print_emul(struct wsdisplay_emultype *);
185 void print_screen(struct wsdisplay_screentype *);
186 
187 struct field *
188 field_by_name(struct field *field_tab, char *name)
189 {
190 	const char *p = strchr(name, '.');
191 
192 	if (!p++)
193 		errx(1, "%s: illegal variable name", name);
194 
195 	for (; field_tab->name; field_tab++)
196 		if (strcmp(field_tab->name, p) == 0)
197 			return (field_tab);
198 
199 	errx(1, "%s: not found", name);
200 }
201 
202 struct field *
203 field_by_value(struct field *field_tab, void *addr)
204 {
205 	for (; field_tab->name; field_tab++)
206 		if (field_tab->valp == addr)
207 			return (field_tab);
208 
209 	errx(1, "internal error: field_by_value: not found");
210 }
211 
212 char *
213 int2name(int val, int uflag, const struct nameint *tab, int len)
214 {
215 	static char tmp[20];
216 	int i;
217 
218 	for (i = 0; i < len; i++)
219 		if (tab[i].value == val)
220 			return(tab[i].name);
221 
222 	if (uflag) {
223 		snprintf(tmp, sizeof(tmp), "unknown_%d", val);
224 		return(tmp);
225 	} else
226 		return(NULL);
227 }
228 
229 int
230 name2int(char *val, const struct nameint *tab, int len)
231 {
232 	int i;
233 
234 	for (i = 0; i < len; i++)
235 		if (strcmp(tab[i].name, val) == 0)
236 			return(tab[i].value);
237 	return(-1);
238 }
239 
240 void
241 pr_field(const char *pre, struct field *f, const char *sep)
242 {
243 	struct field_pc *pc;
244 	u_int flags;
245 	int i, n;
246 	char *p;
247 
248 	if (sep)
249 		printf("%s.%s%s", pre, f->name, sep);
250 
251 	switch (f->format) {
252 	case FMT_UINT:
253 		printf("%u", *((u_int *) f->valp));
254 		break;
255 	case FMT_INT:
256 		printf("%d", *((int *) f->valp));
257 		break;
258 	case FMT_BOOL:
259 		printf("%s", *((u_int *) f->valp)? "on" : "off");
260 		break;
261 	case FMT_PC:
262 		pc = f->valp;
263 		i = pc->max - pc->min;
264 		n = pc->cur - pc->min;
265 		printf("%u.%02u%%", n * 100 / i, ((n * 100) % i) * 100 / i);
266 		break;
267 	case FMT_KBDTYPE:
268 		p = int2name(*((u_int *) f->valp), 1,
269 			     kbtype_tab, TABLEN(kbtype_tab));
270 		printf("%s", p);
271 		break;
272 	case FMT_MSTYPE:
273 		p = int2name(*((u_int *) f->valp), 1,
274 			     mstype_tab, TABLEN(mstype_tab));
275 		printf("%s", p);
276 		break;
277 	case FMT_DPYTYPE:
278 		p = int2name(*((u_int *) f->valp), 1,
279 			     dpytype_tab, TABLEN(dpytype_tab));
280 		printf("%s", p);
281 		break;
282 	case FMT_KBDENC:
283 		p = int2name(KB_ENCODING(*((u_int *) f->valp)), 1,
284 			     kbdenc_tab, TABLEN(kbdenc_tab));
285 		printf("%s", p);
286 
287 		flags = KB_VARIANT(*((u_int *) f->valp));
288 		for (i = 0; i < 32; i++) {
289 			if (!(flags & (1 << i)))
290 				continue;
291 			p = int2name(flags & (1 << i), 1,
292 				     kbdvar_tab, TABLEN(kbdvar_tab));
293 			printf(".%s", p);
294 		}
295 		break;
296 	case FMT_KBMAP:
297 		print_kmap((struct wskbd_map_data *) f->valp);
298 		break;
299 	case FMT_SCALE:
300 		printf("%d,%d,%d,%d,%d,%d,%d", wmcoords.minx, wmcoords.maxx,
301 		    wmcoords.miny, wmcoords.maxy, wmcoords.swapxy,
302 		    wmcoords.resx, wmcoords.resy);
303 		break;
304 	case FMT_EMUL:
305 		print_emul((struct wsdisplay_emultype *) f->valp);
306 		break;
307 	case FMT_SCREEN:
308 		print_screen((struct wsdisplay_screentype *) f->valp);
309 		break;
310 	case FMT_STRING:
311 		printf("%s", (const char *)f->valp);
312 		break;
313 	case FMT_CFG:
314 		mousecfg_pr_field((struct wsmouse_parameters *) f->valp);
315 		break;
316 	default:
317 		errx(1, "internal error: pr_field: no format %d", f->format);
318 		break;
319 	}
320 
321 	printf("\n");
322 }
323 
324 void
325 rd_field(struct field *f, char *val, int merge)
326 {
327 	struct wscons_keymap *mp;
328 	struct field_pc *pc;
329 	u_int u, r, fr;
330 	char *p;
331 	int i;
332 
333 	switch (f->format) {
334 	case FMT_UINT:
335 		if (sscanf(val, "%u", &u) != 1)
336 			errx(1, "%s: not a number", val);
337 		if (merge)
338 			*((u_int *) f->valp) += u;
339 		else
340 			*((u_int *) f->valp) = u;
341 		break;
342 	case FMT_INT:
343 		if (sscanf(val, "%d", &i) != 1)
344 			errx(1, "%s: not a number", val);
345 		if (merge)
346 			*((int *) f->valp) += i;
347 		else
348 			*((int *) f->valp) = i;
349 		break;
350 	case FMT_BOOL:
351 		if (*val != 'o' || (val[1] != 'n' &&
352 		    (val[1] != 'f' || val[2] != 'f')))
353 			errx(1, "%s: invalid value (on/off)", val);
354 		*((u_int *) f->valp) = val[1] == 'n'? 1 : 0;
355 		break;
356 	case FMT_PC:
357 		fr = 0;
358 		if ((i = sscanf(val, "%u.%u%%", &u, &fr)) != 2 && i != 1)
359 			errx(1, "%s: not a valid number", val);
360 		pc = f->valp;
361 		r = pc->max - pc->min;
362 		i = pc->min + (r * u) / 100 + (r * fr) / 100 / 100;
363 		if (merge == '+')
364 			pc->cur += i;
365 		else if (merge == '-')
366 			pc->cur -= i;
367 		else
368 			pc->cur = i;
369 		if (pc->cur > pc->max)
370 			pc->cur = pc->max;
371 		if (pc->cur < pc->min)
372 			pc->cur = pc->min;
373 		break;
374 	case FMT_KBDENC:
375 		p = strchr(val, '.');
376 		if (p != NULL)
377 			*p++ = '\0';
378 
379 		i = name2int(val, kbdenc_tab, TABLEN(kbdenc_tab));
380 		if (i == -1)
381 			errx(1, "%s: not a valid encoding", val);
382 		*((u_int *) f->valp) = i;
383 
384 		while (p) {
385 			val = p;
386 			p = strchr(p, '.');
387 			if (p != NULL)
388 				*p++ = '\0';
389 			i = name2int(val, kbdvar_tab, TABLEN(kbdvar_tab));
390 			if (i == -1)
391 				errx(1, "%s: not a valid variant", val);
392 			*((u_int *) f->valp) |= i;
393 		}
394 		break;
395 	case FMT_KBMAP:
396 		if (! merge)
397 			kbmap.maplen = 0;
398 		map_scan_setinput(val);
399 		yyparse();
400 		if (merge) {
401 			if (newkbmap.maplen < kbmap.maplen)
402 				newkbmap.maplen = kbmap.maplen;
403 			for (i = 0; i < kbmap.maplen; i++) {
404 				mp = newkbmap.map + i;
405 				if (mp->command == KS_voidSymbol &&
406 				    mp->group1[0] == KS_voidSymbol &&
407 				    mp->group1[1] == KS_voidSymbol &&
408 				    mp->group2[0] == KS_voidSymbol &&
409 				    mp->group2[1] == KS_voidSymbol)
410 					*mp = kbmap.map[i];
411 			}
412 		}
413 		kbmap.maplen = newkbmap.maplen;
414 		bcopy(newkbmap.map, kbmap.map,
415 		      kbmap.maplen*sizeof(struct wscons_keymap));
416 		break;
417 	case FMT_SCALE:
418 	{
419 		const char *errstr = 0;
420 
421 		/* Unspecified values default to 0. */
422 		bzero(&wmcoords, sizeof(wmcoords));
423 		val = (void *)strtok(val, ",");
424 		if (val != NULL) {
425 			wmcoords.minx = (int)strtonum(val,
426 			    -32768, 32767, &errstr);
427 			val = (void *)strtok(NULL, ",");
428 		}
429 		if (!errstr && val != NULL) {
430 			wmcoords.maxx = (int)strtonum(val,
431 			    -32768, 32767, &errstr);
432 			val = (void *)strtok(NULL, ",");
433 		}
434 		if (!errstr && val != NULL) {
435 			wmcoords.miny = (int)strtonum(val,
436 			    -32768, 32767, &errstr);
437 			val = (void *)strtok(NULL, ",");
438 		}
439 		if (!errstr && val != NULL) {
440 			wmcoords.maxy = (int)strtonum(val,
441 			    -32768, 32767, &errstr);
442 			val = (void *)strtok(NULL, ",");
443 		}
444 		if (!errstr && val != NULL) {
445 			wmcoords.swapxy = (int)strtonum(val,
446 			    -32768, 32767, &errstr);
447 			val = (void *)strtok(NULL, ",");
448 		}
449 		if (!errstr && val != NULL) {
450 			wmcoords.resx = (int)strtonum(val,
451 			    0, 32767, &errstr);
452 			val = (void *)strtok(NULL, ",");
453 		}
454 		if (!errstr && val != NULL) {
455 			wmcoords.resy = (int)strtonum(val,
456 			    0, 32767, &errstr);
457 			val = (void *)strtok(NULL, ",");
458 		}
459 		if (errstr)
460 			errx(1, "calibration value is %s", errstr);
461 		if (val != NULL)
462 			errx(1, "too many calibration values");
463 
464 		break;
465 	}
466 	case FMT_STRING:
467 		strlcpy(f->valp, val, WSFONT_NAME_SIZE);
468 		break;
469 	case FMT_CFG:
470 		mousecfg_rd_field((struct wsmouse_parameters *) f->valp, val);
471 		break;
472 	default:
473 		errx(1, "internal error: rd_field: no format %d", f->format);
474 		break;
475 	}
476 }
477 
478 void
479 print_kmap(struct wskbd_map_data *map)
480 {
481 	struct wscons_keymap *mp;
482 	int i;
483 
484 	for (i = 0; i < map->maplen; i++) {
485 		mp = map->map + i;
486 
487 		if (mp->command == KS_voidSymbol &&
488 		    mp->group1[0] == KS_voidSymbol &&
489 		    mp->group1[1] == KS_voidSymbol &&
490 		    mp->group2[0] == KS_voidSymbol &&
491 		    mp->group2[1] == KS_voidSymbol)
492 			continue;
493 		printf("\n");
494 		printf("keycode %u =", i);
495 		if (mp->command != KS_voidSymbol)
496 			printf(" %s", ksym2name(mp->command));
497 		printf(" %s", ksym2name(mp->group1[0]));
498 		if (mp->group1[0] != mp->group1[1] ||
499 		    mp->group1[0] != mp->group2[0] ||
500 		    mp->group1[0] != mp->group2[1]) {
501 			printf(" %s", ksym2name(mp->group1[1]));
502 			if (mp->group1[0] != mp->group2[0] ||
503 			    mp->group1[1] != mp->group2[1]) {
504 				printf(" %s", ksym2name(mp->group2[0]));
505 				printf(" %s", ksym2name(mp->group2[1]));
506 			}
507 		}
508 	}
509 	ksymenc(0);
510 }
511 
512 void
513 print_emul(struct wsdisplay_emultype *emuls)
514 {
515 	struct wsdisplay_emultype e;
516 	int fd,i;
517 	char c='\0';
518 
519 	fd=emuls->idx;
520 	e.idx=0;
521 	i = ioctl(fd, WSDISPLAYIO_GETEMULTYPE, &e);
522 	while(i == 0) {
523 		if (c != '\0')
524 			printf("%c", c);
525 		printf("%s", e.name);
526 		c=',';
527 		e.idx++;
528 		i = ioctl(fd, WSDISPLAYIO_GETEMULTYPE, &e);
529 	}
530 }
531 
532 void
533 print_screen(struct wsdisplay_screentype *screens)
534 {
535 	struct wsdisplay_screentype s;
536 	int fd,i;
537 	char c='\0';
538 
539 	fd=screens->idx;
540 	s.idx=0;
541 	i = ioctl(fd, WSDISPLAYIO_GETSCREENTYPE, &s);
542 	while(i == 0) {
543 		if (c != '\0')
544 			printf("%c", c);
545 		printf("%s", s.name);
546 		c=',';
547 		s.idx++;
548 		i = ioctl(fd, WSDISPLAYIO_GETSCREENTYPE, &s);
549 	}
550 }
551