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/* $OpenBSD: parse_args.c,v 1.2 2003/06/02 18:47:58 deraadt 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"
#define RB_NOSYM 0x400
#define RB_AUTOBOOT 0 /* flags for system auto-booting itself */
#if 0
#define RB_ASKNAME 0x0001 /* ask for file name to reboot from */
#define RB_SINGLE 0x0002 /* reboot to single user only */
#define RB_NOSYNC 0x0004 /* dont sync before reboot */
#define RB_HALT 0x0008 /* don't reboot, just halt */
#define RB_INITNAME 0x0010 /* name given for /etc/init (unused) */
#define RB_DFLTROOT 0x0020 /* use compiled-in rootdev */
#define RB_KDB 0x0040 /* give control to kernel debugger */
#define RB_RDONLY 0x0080 /* mount root fs read-only */
#define RB_DUMP 0x0100 /* dump kernel memory before reboot */
#define RB_MINIROOT 0x0200 /* mini-root present in memory at boot time */
#define RB_CONFIG 0x0400 /* change configured devices */
#define RB_TIMEBAD 0x0800 /* don't call resettodr() in boot() */
#define RB_POWERDOWN 0x1000 /* attempt to power down machine */
#define RB_SERCONS 0x2000 /* use serial console if available */
#endif
struct flags {
char c;
short bit;
} bf[] = {
{ 'a', RB_ASKNAME }, /* ask root */
{ 'b', RB_HALT },
{ 'c', RB_CONFIG },
{ 'd', RB_KDB },
{ 'e', 0x4000 }, /* spin slave cpus */
{ 'f', 0x0010 }, /* ask kernel name */
{ 'm', RB_MINIROOT },
{ 'r', RB_DFLTROOT },
{ 's', RB_SINGLE },
{ 'x', 0x8000 }, /* extra boot debug */
{ 'y', RB_NOSYM },
};
int
parse_args(filep, flagp)
char **filep;
int *flagp;
{
char *name = KERNEL_NAME, *ptr;
int i, howto = 0;
char c;
if (bugargs.arg_start != bugargs.arg_end) {
ptr = bugargs.arg_start;
while (c = *ptr) {
while (c == ' ')
c = *++ptr;
if (c == '\0')
return (0);
if (c != '-') {
name = ptr;
while ((c = *++ptr) && c != ' ')
;
if (c)
*ptr++ = 0;
continue;
}
while ((c = *++ptr) && c != ' ') {
if (c == 'q')
return (1);
for (i = 0; i < sizeof(bf)/sizeof(bf[0]); i++)
if (bf[i].c == c) {
howto |= bf[i].bit;
}
}
}
}
*flagp = howto;
*filep = name;
return (0);
}
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