1/* $NetBSD: bootconfig.c,v 1.2 2002/03/10 19:56:39 lukem Exp $ */ 2 3/*- 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 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 Mark Brinicombe 21 * for the NetBSD Project. 22 * 4. The name of the company nor the name of the author may be used to 23 * endorse or promote products derived from this software without specific 24 * prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39#include <sys/cdefs.h> 40__FBSDID("$FreeBSD$"); 41 42#include <sys/param.h> 43 44#include <sys/systm.h> 45 46#include <machine/bootconfig.h> 47 48 49/* 50 * Function to identify and process different types of boot argument 51 */ 52 53int 54get_bootconf_option(opts, opt, type, result) 55 char *opts; 56 char *opt; 57 int type; 58 void *result; 59{ 60 char *ptr; 61 char *optstart; 62 int not; 63 64 ptr = opts; 65 66 while (*ptr) { 67 /* Find start of option */ 68 while (*ptr == ' ' || *ptr == '\t') 69 ++ptr; 70 71 if (*ptr == 0) 72 break; 73 74 not = 0; 75 76 /* Is it a negate option */ 77 if ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN && *ptr == '!') { 78 not = 1; 79 ++ptr; 80 } 81 82 /* Find the end of option */ 83 optstart = ptr; 84 while (*ptr != 0 && *ptr != ' ' && *ptr != '\t' && *ptr != '=') 85 ++ptr; 86 87 if ((*ptr == '=') 88 || (*ptr != '=' && ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN))) { 89 /* compare the option */ 90 if (strncmp(optstart, opt, (ptr - optstart)) == 0) { 91 /* found */ 92 93 if (*ptr == '=') 94 ++ptr; 95 96 switch(type & BOOTOPT_TYPE_MASK) { 97 case BOOTOPT_TYPE_BOOLEAN : 98 if (*(ptr - 1) == '=') 99 *((int *)result) = ((u_int)strtoul(ptr, NULL, 10) != 0); 100 else 101 *((int *)result) = !not; 102 break; 103 case BOOTOPT_TYPE_STRING : 104 *((char **)result) = ptr; 105 break; 106 case BOOTOPT_TYPE_INT : 107 *((int *)result) = (u_int)strtoul(ptr, NULL, 10); 108 break; 109 case BOOTOPT_TYPE_BININT : 110 *((int *)result) = (u_int)strtoul(ptr, NULL, 2); 111 break; 112 case BOOTOPT_TYPE_HEXINT : 113 *((int *)result) = (u_int)strtoul(ptr, NULL, 16); 114 break; 115 default: 116 return(0); 117 } 118 return(1); 119 } 120 } 121 /* skip to next option */ 122 while (*ptr != ' ' && *ptr != '\t' && *ptr != 0) 123 ++ptr; 124 } 125 return(0); 126} 127