1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/* $OpenBSD: dev_i386.c,v 1.19 1997/08/22 00:38:35 mickey Exp $ */
/*
* Copyright (c) 1996 Michael Shalayeff
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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 REGENTS OR CONTRIBUTORS 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 "libsa.h"
#include "biosdev.h"
#include <sys/param.h>
#include <dev/cons.h>
extern int debug;
/* XXX use slot for 'rd' for 'hd' pseudo-device */
const char bdevs[][4] = {
"wd", "", "fd", "wt", "sd", "st", "cd", "mcd",
"", "", "", "", "", "", "", "scd", "", "hd", "acd"
};
const int nbdevs = NENTS(bdevs);
const char cdevs[][4] = {
"", "", "", "", "", "", "", "",
"com", "", "", "", "pc"
};
const int ncdevs = NENTS(cdevs);
/* pass dev_t to the open routines */
int
devopen(struct open_file *f, const char *fname, char **file)
{
struct devsw *dp = devsw;
register int i, rc = 1;
*file = (char *)fname;
#ifdef DEBUG
if (debug)
printf("devopen:");
#endif
for (i = 0; i < ndevs && rc != 0; dp++, i++) {
#ifdef DEBUG
if (debug)
printf(" %s", dp->dv_name);
#endif
if ((rc = (*dp->dv_open)(f, file)) == 0) {
f->f_dev = dp;
return 0;
}
#ifdef DEBUG
else if (debug)
printf(":%d", rc);
#endif
}
#ifdef DEBUG
if (debug)
putchar('\n');
#endif
if ((f->f_flags & F_NODEV) == 0)
f->f_dev = dp;
return rc;
}
void
devboot(bootdev, p)
dev_t bootdev;
char *p;
{
#ifdef _TEST
*p++ = '/';
*p++ = 'd';
*p++ = 'e';
*p++ = 'v';
*p++ = '/';
*p++ = 'r';
#endif
if (bootdev & 0x80)
*p++ = 'h';
else
*p++ = 'f';
*p++ = 'd';
*p++ = '0' + (bootdev & 0x7f);
*p++ = 'a';
*p = '\0';
}
void
putchar(c)
register int c;
{
static int pos = 0;
switch(c) {
case '\177': /* DEL erases */
cnputc('\b');
cnputc(' ');
case '\b':
cnputc('\b');
if (pos)
pos--;
break;
case '\t':
do
cnputc(' ');
while(++pos % 8);
break;
case '\n':
case '\r':
cnputc(c);
pos=0;
break;
default:
cnputc(c);
pos++;
break;
}
}
int
getchar()
{
register int c = cngetc();
if (c == '\r')
c = '\n';
if ((c < ' ' && c != '\n') || c == '\177')
return(c);
putchar(c);
return(c);
}
char *
ttyname(fd)
int fd;
{
static char buf[8];
sprintf(buf, "%s%d", cdevs[major(cn_tab->cn_dev)],
minor(cn_tab->cn_dev));
return (buf);
}
dev_t
ttydev(name)
char *name;
{
int i, unit = -1;
char *no = name + strlen(name) - 1;
while (no >= name && *no >= '0' && *no <= '9')
unit = (unit < 0 ? 0 : (unit * 10)) + *no-- - '0';
if (no < name || unit < 0)
return (NODEV);
for (i = 0; i < ncdevs; i++)
if (strncmp(name, cdevs[i], no - name + 1) == 0)
return (makedev(i, unit));
return (NODEV);
}
|
