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
|
/* sun.c - Read SUN style partition tables. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2005 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/partition.h>
#include <grub/disk.h>
#include <grub/mm.h>
#include <grub/misc.h>
#include <grub/dl.h>
#include <grub/symbol.h>
#include <grub/types.h>
#include <grub/err.h>
#define GRUB_PARTMAP_SUN_MAGIC 0xDABE
#define GRUB_PARTMAP_SUN_MAX_PARTS 8
#define GRUB_PARTMAP_SUN_WHOLE_DISK_ID 0x05
struct grub_sun_partition_info
{
grub_uint8_t spare1;
grub_uint8_t id;
grub_uint8_t spare2;
grub_uint8_t flags;
} __attribute__ ((packed));
struct grub_sun_partition_descriptor
{
grub_uint32_t start_cylinder;
grub_uint32_t num_sectors;
} __attribute__ ((packed));
struct grub_sun_block
{
grub_uint8_t info[128]; /* Informative text string. */
grub_uint8_t spare0[14];
struct grub_sun_partition_info infos[8];
grub_uint8_t spare1[246]; /* Boot information etc. */
grub_uint16_t rspeed; /* Disk rotational speed. */
grub_uint16_t pcylcount; /* Physical cylinder count. */
grub_uint16_t sparecyl; /* extra sects per cylinder. */
grub_uint8_t spare2[4]; /* More magic... */
grub_uint16_t ilfact; /* Interleave factor. */
grub_uint16_t ncyl; /* Data cylinder count. */
grub_uint16_t nacyl; /* Alt. cylinder count. */
grub_uint16_t ntrks; /* Tracks per cylinder. */
grub_uint16_t nsect; /* Sectors per track. */
grub_uint8_t spare3[4]; /* Even more magic... */
struct grub_sun_partition_descriptor partitions[8];
grub_uint16_t magic; /* Magic number. */
grub_uint16_t csum; /* Label xor'd checksum. */
} __attribute__ ((packed));
static struct grub_partition_map grub_sun_partition_map;
#ifndef GRUB_UTIL
static grub_dl_t my_mod;
#endif
/* Verify checksum (true=ok). */
static int
grub_sun_is_valid (struct grub_sun_block *label)
{
grub_uint16_t *pos;
grub_uint16_t sum = 0;
for (pos = (grub_uint16_t *) label; pos < (grub_uint16_t *) (label + 1); pos++)
sum ^= *pos;
return !sum;
}
static grub_err_t
sun_partition_map_iterate (grub_disk_t disk,
int (*hook) (grub_disk_t disk,
const grub_partition_t partition))
{
struct grub_partition *p;
struct grub_disk raw;
struct grub_sun_block block;
int partnum;
raw = *disk;
raw.partition = 0;
p = (struct grub_partition *) grub_malloc (sizeof (struct grub_partition));
if (!p)
return grub_errno;
p->offset = 0;
p->data = 0;
p->partmap = &grub_sun_partition_map;
if (grub_disk_read (&raw, 0, 0, sizeof (struct grub_sun_block),
(char *) &block) == GRUB_ERR_NONE)
{
if (GRUB_PARTMAP_SUN_MAGIC != grub_be_to_cpu16 (block.magic))
grub_error (GRUB_ERR_BAD_PART_TABLE, "not a sun partiton table");
if (!grub_sun_is_valid (&block))
grub_error (GRUB_ERR_BAD_PART_TABLE, "invalid checksum");
/* Maybe another error value would be better, because partition
table _is_ recognised but invalid. */
for (partnum = 0; partnum < GRUB_PARTMAP_SUN_MAX_PARTS; partnum++)
{
if (block.infos[partnum].id == 0 ||
block.infos[partnum].id == GRUB_PARTMAP_SUN_WHOLE_DISK_ID)
continue;
p->start = grub_be_to_cpu32
(block.partitions[partnum].start_cylinder)
* grub_be_to_cpu16 (block.ntrks)
* grub_be_to_cpu16 (block.nsect);
p->len = grub_be_to_cpu32 (block.partitions[partnum].num_sectors);
p->index = partnum;
if (p->len)
{
if (hook (disk, p))
partnum = GRUB_PARTMAP_SUN_MAX_PARTS;
}
}
}
grub_free (p);
return grub_errno;
}
static grub_partition_t
sun_partition_map_probe (grub_disk_t disk, const char *str)
{
grub_partition_t p = 0;
int partnum = 0;
char *s = (char *) str;
auto int find_func (grub_disk_t d, const grub_partition_t partition);
int find_func (grub_disk_t d __attribute__ ((unused)),
const grub_partition_t partition)
{
if (partnum == partition->index)
{
p = (grub_partition_t) grub_malloc (sizeof (*p));
if (p)
grub_memcpy (p, partition, sizeof (*p));
return 1;
}
return 0;
}
grub_errno = GRUB_ERR_NONE;
partnum = grub_strtoul (s, 0, 10);
if (grub_errno == GRUB_ERR_NONE)
{
if (sun_partition_map_iterate (disk, find_func))
{
grub_free (p);
p = 0;
}
}
else
{
grub_error (GRUB_ERR_BAD_FILENAME, "invalid partition");
p = 0;
}
return p;
}
static char *
sun_partition_map_get_name (const grub_partition_t p)
{
char *name;
name = grub_malloc (13);
if (name)
grub_sprintf (name, "%d", p->index);
return name;
}
/* Partition map type. */
static struct grub_partition_map grub_sun_partition_map =
{
.name = "sun_partition_map",
.iterate = sun_partition_map_iterate,
.probe = sun_partition_map_probe,
.get_name = sun_partition_map_get_name
};
GRUB_MOD_INIT(sun_partition_map)
{
grub_partition_map_register (&grub_sun_partition_map);
#ifndef GRUB_UTIL
my_mod = mod;
#endif
}
GRUB_MOD_FINI(sun_partition_map)
{
grub_partition_map_unregister (&grub_sun_partition_map);
}
|