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wsconsctl.c revision 1.14
      1 /*	$NetBSD: wsconsctl.c,v 1.14 2006/02/05 18:11:46 jmmv Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Juergen Hannken-Illjes.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <err.h>
     40 #include <fcntl.h>
     41 #include <string.h>
     42 #include <stdio.h>
     43 #include <stdlib.h>
     44 #include <unistd.h>
     45 
     46 #include "wsconsctl.h"
     47 
     48 #define PATH_KEYBOARD		"/dev/wskbd"
     49 #define PATH_MOUSE		"/dev/wsmouse"
     50 #define PATH_DISPLAY		"/dev/ttyE0"
     51 
     52 extern struct field keyboard_field_tab[];
     53 extern struct field mouse_field_tab[];
     54 extern struct field display_field_tab[];
     55 extern int keyboard_field_tab_len;
     56 extern int mouse_field_tab_len;
     57 extern int display_field_tab_len;
     58 
     59 static void usage(const char *) __attribute__((__noreturn__));
     60 
     61 static void
     62 usage(const char *msg)
     63 {
     64 	const char *progname = getprogname();
     65 
     66 	if (msg != NULL)
     67 		(void)fprintf(stderr, "%s: %s\n\n", progname, msg);
     68 
     69 	(void)fprintf(stderr,
     70 	    "Usage: %s [-kmd] [-f file] [-n] name ...\n"
     71 	    " -or-  %s [-kmd] [-f file] [-n] -w name=value ...\n"
     72 	    " -or-  %s [-kmd] [-f file] [-n] -w name+=value ...\n"
     73 	    " -or-  %s [-kmd] [-f file] [-n] -a\n",
     74 	    progname, progname, progname, progname);
     75 
     76 	exit(EXIT_FAILURE);
     77 }
     78 
     79 int
     80 main(int argc, char **argv)
     81 {
     82 	int i, ch, fd;
     83 	int aflag, dflag, kflag, mflag, wflag;
     84 	char *p;
     85 	const char *sep, *file;
     86 	struct field *f, *field_tab;
     87 	int do_merge, field_tab_len;
     88 	void (*getval)(int);
     89 	void (*putval)(int);
     90 
     91 	aflag = 0;
     92 	dflag = 0;
     93 	kflag = 0;
     94 	mflag = 0;
     95 	wflag = 0;
     96 	file = NULL;
     97 	sep = "=";
     98 	field_tab = NULL;
     99 	field_tab_len = 0;
    100 	getval = NULL;
    101 	putval = NULL;
    102 
    103 	while ((ch = getopt(argc, argv, "adf:kmnw")) != -1) {
    104 		switch(ch) {
    105 		case 'a':
    106 			aflag = 1;
    107 			break;
    108 		case 'd':
    109 			dflag = 1;
    110 			break;
    111 		case 'f':
    112 			file = optarg;
    113 			break;
    114 		case 'k':
    115 			kflag = 1;
    116 			break;
    117 		case 'm':
    118 			mflag = 1;
    119 			break;
    120 		case 'n':
    121 			sep = NULL;
    122 			break;
    123 		case 'w':
    124 			wflag = 1;
    125 			break;
    126 		case '?':
    127 		default:
    128 			usage(NULL);
    129 		}
    130 	}
    131 
    132 	argc -= optind;
    133 	argv += optind;
    134 
    135 	if (dflag + kflag + mflag == 0)
    136 		kflag = 1;
    137 	if (dflag + kflag + mflag > 1)
    138 		usage("only one of -k, -d or -m may be given");
    139 	if (argc > 0 && aflag != 0)
    140 		usage("excess arguments after -a");
    141 	if (aflag != 0 && wflag != 0)
    142 		usage("only one of -a or -w may be given");
    143 
    144 	if (kflag) {
    145 		if (file == NULL)
    146 			file = PATH_KEYBOARD;
    147 		field_tab = keyboard_field_tab;
    148 		field_tab_len = keyboard_field_tab_len;
    149 		getval = keyboard_get_values;
    150 		putval = keyboard_put_values;
    151 	} else if (mflag) {
    152 		if (file == NULL)
    153 			file = PATH_MOUSE;
    154 		field_tab = mouse_field_tab;
    155 		field_tab_len = mouse_field_tab_len;
    156 		getval = mouse_get_values;
    157 		putval = mouse_put_values;
    158 	} else if (dflag) {
    159 		if (file == NULL)
    160 			file = PATH_DISPLAY;
    161 		field_tab = display_field_tab;
    162 		field_tab_len = display_field_tab_len;
    163 		getval = display_get_values;
    164 		putval = display_put_values;
    165 	}
    166 
    167 	field_setup(field_tab, field_tab_len);
    168 
    169 	fd = open(file, O_WRONLY);
    170 	if (fd < 0)
    171 		fd = open(file, O_RDONLY);
    172 	if (fd < 0)
    173 		err(EXIT_FAILURE, "%s", file);
    174 
    175 	if (aflag != 0) {
    176 		for (i = 0; i < field_tab_len; i++)
    177 			if ((field_tab[i].flags & (FLG_NOAUTO|FLG_WRONLY)) == 0)
    178 				field_tab[i].flags |= FLG_GET;
    179 		(*getval)(fd);
    180 		for (i = 0; i < field_tab_len; i++)
    181 			if (field_tab[i].flags & FLG_NOAUTO)
    182 				warnx("Use explicit arg to view %s.",
    183 				    field_tab[i].name);
    184 			else if (field_tab[i].flags & FLG_GET &&
    185 				 !(field_tab[i].flags & FLG_DISABLED))
    186 				pr_field(field_tab + i, sep);
    187 	} else if (argc > 0) {
    188 		if (wflag != 0) {
    189 			for (i = 0; i < argc; i++) {
    190 				p = strchr(argv[i], '=');
    191 				if (p == NULL)
    192 					errx(EXIT_FAILURE, "'=' not found");
    193 				if (p > argv[i] && *(p - 1) == '+') {
    194 					*(p - 1) = '\0';
    195 					do_merge = 1;
    196 				} else
    197 					do_merge = 0;
    198 				*p++ = '\0';
    199 				f = field_by_name(argv[i]);
    200 				if ((f->flags & FLG_RDONLY) != 0)
    201 					errx(EXIT_FAILURE, "%s: read only",
    202 					    argv[i]);
    203 				if (do_merge) {
    204 					if ((f->flags & FLG_MODIFY) == 0)
    205 						errx(EXIT_FAILURE,
    206 						    "%s: can only be set",
    207 						    argv[i]);
    208 					f->flags |= FLG_GET;
    209 					(*getval)(fd);
    210 					f->flags &= ~FLG_GET;
    211 				}
    212 				rd_field(f, p, do_merge);
    213 				f->flags |= FLG_SET;
    214 				(*putval)(fd);
    215 				f->flags &= ~FLG_SET;
    216 			}
    217 		} else {
    218 			for (i = 0; i < argc; i++) {
    219 				f = field_by_name(argv[i]);
    220 				if ((f->flags & FLG_WRONLY) != 0)
    221 					errx(EXIT_FAILURE, "%s: write only",
    222 					    argv[i]);
    223 				f->flags |= FLG_GET;
    224 			}
    225 			(*getval)(fd);
    226 			for (i = 0; i < field_tab_len; i++) {
    227 				if (field_tab[i].flags & FLG_DISABLED)
    228 					errx(EXIT_FAILURE,
    229 					    "%s: no kernel support",
    230 					    field_tab[i].name);
    231 				if (field_tab[i].flags & FLG_GET)
    232 					pr_field(field_tab + i, sep);
    233 			}
    234 		}
    235 	} else {
    236 		close(fd);
    237 		usage(NULL);
    238 	}
    239 
    240 	close(fd);
    241 
    242 	return EXIT_SUCCESS;
    243 }
    244