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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/* $OpenBSD: unixdev.c,v 1.5 2005/05/24 20:38:20 uwe Exp $ */
/*
* Copyright (c) 1996-1998 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.
*
* 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 <sys/param.h>
#include <sys/reboot.h>
#include <sys/disklabel.h>
#include <sys/syscall.h>
#include <sys/time.h>
#define open uopen
#include <sys/fcntl.h>
#include <dev/cons.h>
#undef open
#include "disk.h"
#include "libsa.h"
#include <lib/libsa/unixdev.h>
int
unixstrategy(void *devdata, int rw, daddr_t blk, size_t size, void *buf,
size_t *rsize)
{
int rc = 0;
off_t off;
#ifdef UNIX_DEBUG
printf("unixstrategy: %s %d bytes @ %d\n",
(rw==F_READ?"reading":"writing"), size, blk);
#endif
off = (off_t)blk * DEV_BSIZE;
if ((rc = ulseek((int)devdata, off, SEEK_SET)) >= 0)
rc = (rw==F_READ) ? uread((int)devdata, buf, size) :
uwrite((int)devdata, buf, size);
if (rc >= 0) {
*rsize = (size_t)rc;
rc = 0;
} else
rc = errno;
return rc;
}
int
unixopen(struct open_file *f, ...)
{
va_list ap;
char path[PATH_MAX];
char *cp, **file;
dev_t maj, unit, part, bsd_dev;
struct diskinfo *dip;
va_start(ap, f);
cp = *(file = va_arg(ap, char **));
va_end(ap);
#ifdef UNIX_DEBUG
if (debug)
printf("unixopen: %s\n", cp);
#endif
f->f_devdata = NULL;
/* Search for device specification. */
if (strlen(cp) < 4)
return ENOENT;
cp += 2;
if (cp[2] != ':') {
if (cp[3] != ':')
return ENOENT;
else
cp++;
}
for (maj = 0;
maj < nbdevs && strncmp(*file, bdevs[maj], cp - *file) != 0;
maj++)
;
if (maj >= nbdevs) {
printf("Unknown device: ");
for (cp = *file; *cp != ':'; cp++)
putchar(*cp);
putchar('\n');
return EADAPT;
}
/* Get unit. */
if ('0' <= *cp && *cp <= '9')
unit = *cp++ - '0';
else {
printf("Bad unit number\n");
return EUNIT;
}
/* Get partition. */
if ('a' <= *cp && *cp <= 'p')
part = *cp++ - 'a';
else {
printf("Bad partition id\n");
return EPART;
}
cp++; /* skip ':' */
if (*cp != 0)
*file = cp;
else
f->f_flags |= F_RAW;
/* Find device. */
dip = dkdevice(maj, unit);
if (dip == (struct diskinfo *)NULL)
return ENOENT;
/* Fix up bootdev. */
bsd_dev = dip->bios_info.bsd_dev;
dip->bsddev = MAKEBOOTDEV(B_TYPE(bsd_dev), B_ADAPTOR(bsd_dev),
B_CONTROLLER(bsd_dev), unit, part);
dip->bootdev = MAKEBOOTDEV(B_TYPE(bsd_dev), B_ADAPTOR(bsd_dev),
B_CONTROLLER(bsd_dev), B_UNIT(bsd_dev), part);
/* Try for disklabel again (might be removable media). */
if (dip->bios_info.flags & BDI_BADLABEL) {
const char *st = bios_getdisklabel(&dip->bios_info,
&dip->disklabel);
#ifdef UNIX_DEBUG
if (debug && st)
printf("%s\n", st);
#endif
if (!st) {
dip->bios_info.flags &= ~BDI_BADLABEL;
dip->bios_info.flags |= BDI_GOODLABEL;
} else
return ERDLAB;
}
part = bios_getdospart(&dip->bios_info);
bios_devpath(dip->bios_info.bios_number, part, path);
f->f_devdata = (void *)uopen(path, O_RDONLY);
if ((int)f->f_devdata == -1)
return errno;
return 0;
}
int
unixclose(struct open_file *f)
{
return uclose((int)f->f_devdata);
}
int
unixioctl(struct open_file *f, u_long cmd, void *data)
{
return uioctl((int)f->f_devdata, cmd, data);
}
off_t
ulseek(int fd, off_t off, int wh)
{
extern long ulseek32(int, long, int);
off_t r;
/* XXX only SEEK_SET is used, so anything else can fail for now. */
if (wh == SEEK_SET) {
if (ulseek32(fd, 0, SEEK_SET) != 0)
return -1;
while (off > OFFT_OFFSET_MAX) {
off -= OFFT_OFFSET_MAX;
if (ulseek32(fd, OFFT_OFFSET_MAX, SEEK_CUR) < 0 &&
errno != EOVERFLOW)
return -1;
}
r = ulseek32(fd, (long)off, SEEK_CUR);
if (r == -1 && errno == EOVERFLOW)
r = off;
} else
r = ulseek32(fd, (long)off, wh);
return r;
}
time_t
getsecs(void)
{
return (time_t)syscall(__NR_time, NULL);
}
unsigned int
sleep(unsigned int seconds)
{
unsigned int start;
start = getsecs();
while (getsecs() - start < seconds)
;
return (0);
}
|
