Annotation of sys/arch/aviion/stand/libsa/parse_args.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: parse_args.c,v 1.1 2006/05/16 22:48:18 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: int
40: parse_args(char *line, char **filep)
41: {
42: char *name = NULL, *p;
43:
44: /* recognize the special ``halt'' keyword */
45: if (strcmp(line, "halt") == 0)
46: return (1);
47:
48: /*
49: * The command line should be under the form
50: * devtype(...)filename args
51: * such as
52: * inen()bsd -s
53: * and we only care about the kernel name here.
54: *
55: * However, if the kernel could not be loaded, and we asked the
56: * user, he may not give the devtype() part - especially since
57: * at the moment we only support inen() anyway.
58: */
59:
60: /* search for a set of braces */
61: for (p = line; *p != '\0' && *p != '('; p++) ;
62: if (*p != '\0') {
63: for (p = line; *p != '\0' && *p != ')'; p++) ;
64: if (*p != '\0')
65: name = ++p;
66: }
67:
68: if (name == NULL)
69: name = line;
70:
71: /* now insert a NUL before any option */
72: for (p = name; *p != '\0' && *p != ' '; p++) ;
73: *p = '\0';
74:
75: /* no name, use the default */
76: if (*name == '\0')
77: name = KERNEL_NAME;
78:
79: *filep = name;
80: return (0);
81: }
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