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/* $OpenBSD: parse_args.c,v 1.1 2006/05/16 22:48:18 miod Exp $ */
/*-
* Copyright (c) 1995 Theo de Raadt
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/param.h>
#include <sys/reboot.h>
#include <machine/prom.h>
#include <a.out.h>
#include "stand.h"
#include "libsa.h"
#define KERNEL_NAME "bsd"
int
parse_args(char *line, char **filep)
{
char *name = NULL, *p;
/* recognize the special ``halt'' keyword */
if (strcmp(line, "halt") == 0)
return (1);
/*
* The command line should be under the form
* devtype(...)filename args
* such as
* inen()bsd -s
* and we only care about the kernel name here.
*
* However, if the kernel could not be loaded, and we asked the
* user, he may not give the devtype() part - especially since
* at the moment we only support inen() anyway.
*/
/* search for a set of braces */
for (p = line; *p != '\0' && *p != '('; p++) ;
if (*p != '\0') {
for (p = line; *p != '\0' && *p != ')'; p++) ;
if (*p != '\0')
name = ++p;
}
if (name == NULL)
name = line;
/* now insert a NUL before any option */
for (p = name; *p != '\0' && *p != ' '; p++) ;
*p = '\0';
/* no name, use the default */
if (*name == '\0')
name = KERNEL_NAME;
*filep = name;
return (0);
}
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