127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/* $NetBSD: bootconfig.c,v 1.2 2002/03/10 19:56:39 lukem Exp $ */
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/*-
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* Copyright (c) 1994-1998 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Brinicombe
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* for the NetBSD Project.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/bootconfig.h>
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/*
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* Function to identify and process different types of boot argument
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*/
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int
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get_bootconf_option(opts, opt, type, result)
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char *opts;
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char *opt;
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int type;
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void *result;
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{
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char *ptr;
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char *optstart;
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int not;
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ptr = opts;
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while (*ptr) {
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/* Find start of option */
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while (*ptr == ' ' || *ptr == '\t')
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++ptr;
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if (*ptr == 0)
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break;
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not = 0;
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/* Is it a negate option */
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if ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN && *ptr == '!') {
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not = 1;
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++ptr;
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}
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/* Find the end of option */
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optstart = ptr;
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while (*ptr != 0 && *ptr != ' ' && *ptr != '\t' && *ptr != '=')
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++ptr;
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if ((*ptr == '=')
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|| (*ptr != '=' && ((type & BOOTOPT_TYPE_MASK) == BOOTOPT_TYPE_BOOLEAN))) {
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/* compare the option */
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if (strncmp(optstart, opt, (ptr - optstart)) == 0) {
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/* found */
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if (*ptr == '=')
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++ptr;
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switch(type & BOOTOPT_TYPE_MASK) {
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case BOOTOPT_TYPE_BOOLEAN :
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if (*(ptr - 1) == '=')
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*((int *)result) = ((u_int)strtoul(ptr, NULL, 10) != 0);
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else
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*((int *)result) = !not;
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break;
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case BOOTOPT_TYPE_STRING :
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*((char **)result) = ptr;
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break;
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case BOOTOPT_TYPE_INT :
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*((int *)result) = (u_int)strtoul(ptr, NULL, 10);
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break;
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case BOOTOPT_TYPE_BININT :
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*((int *)result) = (u_int)strtoul(ptr, NULL, 2);
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break;
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case BOOTOPT_TYPE_HEXINT :
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*((int *)result) = (u_int)strtoul(ptr, NULL, 16);
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break;
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default:
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return(0);
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}
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return(1);
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}
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}
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/* skip to next option */
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while (*ptr != ' ' && *ptr != '\t' && *ptr != 0)
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++ptr;
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}
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return(0);
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}
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