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82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
/* $NetBSD: parse_args.c,v 1.4 2009/03/14 15:36:11 dsl Exp $ */
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/*-
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* Copyright (c) 1995 Theo de Raadt
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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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*/
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <sys/disklabel.h>
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#include <sys/boot_flag.h>
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#include "stand.h"
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#include "libsa.h"
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#define KERNEL_NAME "netbsd"
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void
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parse_args(char *astart, const char *aend, const char **filep, int *flagp, int *partp)
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{
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const char *name = KERNEL_NAME;
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char *ptr;
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int howto = 0, part = 0;
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char c;
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if (astart != aend) {
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ptr = astart;
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while ((c = *ptr)) {
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while (c == ' ')
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c = *++ptr;
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if (c == '\0')
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return;
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if (c != '-') {
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if (ptr[1] == ':') {
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part = (int) (*ptr - 'A');
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if (part >= MAXPARTITIONS)
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part -= 0x20;
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if (part < 0 || part >= MAXPARTITIONS)
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part = 0;
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if (ptr[2] == ' ' || ptr[2] == '\0') {
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ptr += 2;
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continue;
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}
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name = &(ptr[2]);
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} else
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name = ptr;
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while ((c = *++ptr) && c != ' ')
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;
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if (c)
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*ptr++ = 0;
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continue;
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}
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while ((c = *++ptr) && c != ' ')
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BOOT_FLAG(c, howto);
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}
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}
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*flagp = howto;
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*filep = name;
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*partp = part;
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}
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