Annotation of sys/arch/mvme88k/stand/libsa/parse_args.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: parse_args.c,v 1.5 2006/05/16 22:52:09 miod Exp $ */
2:
3: /*-
4: * Copyright (c) 1995 Theo de Raadt
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: *
15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25: * SUCH DAMAGE.
26: *
27: */
28:
29: #include <sys/param.h>
30: #include <sys/reboot.h>
31: #include <machine/prom.h>
32: #include <a.out.h>
33:
34: #include "stand.h"
35: #include "libsa.h"
36:
37: #define KERNEL_NAME "bsd"
38:
39: struct flags {
40: char c;
41: short bit;
42: } bf[] = {
43: { 'a', RB_ASKNAME }, /* ask root */
44: { 'b', RB_HALT },
45: { 'c', RB_CONFIG },
46: { 'd', RB_KDB },
47: { 'm', RB_MINIROOT },
48: { 'r', RB_DFLTROOT },
49: { 's', RB_SINGLE },
50: { 'y', RB_NOSYM },
51: };
52:
53: int
54: parse_args(filep, flagp)
55: char **filep;
56: int *flagp;
57: {
58: char *name = KERNEL_NAME, *ptr;
59: int i, howto = 0;
60: char c;
61:
62: if (bugargs.arg_start != bugargs.arg_end) {
63: ptr = bugargs.arg_start;
64: while ((c = *ptr) != '\0') {
65: while (c == ' ')
66: c = *++ptr;
67: if (c == '\0')
68: return (0);
69: if (c != '-') {
70: name = ptr;
71: while ((c = *++ptr) && c != ' ')
72: ;
73: if (c)
74: *ptr++ = 0;
75: continue;
76: }
77: while ((c = *++ptr) && c != ' ') {
78: if (c == 'q')
79: return (1);
80: for (i = 0; i < sizeof(bf)/sizeof(bf[0]); i++)
81: if (bf[i].c == c) {
82: howto |= bf[i].bit;
83: }
84: }
85: }
86: }
87: *flagp = howto;
88: *filep = name;
89: return (0);
90: }
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