tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
partition: add support for sysv68 partitions
Add support for the Motorola sysv68 disk partition (slices in motorola
doc).
Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
authored by
Philippe De Muyter
and committed by
Linus Torvalds
19d0e8ce
e729aa16
+107
+9
fs/partitions/Kconfig
+9
fs/partitions/Kconfig
···
236
236
help
237
237
Say Y here if you would like to use hard disks under Linux which
238
238
were partitioned using EFI GPT.
239
+
240
+
config SYSV68_PARTITION
241
+
bool "SYSV68 partition table support" if PARTITION_ADVANCED
242
+
default y if M68K
243
+
help
244
+
Say Y here if you would like to be able to read the hard disk
245
+
partition table format used by Motorola Delta machines (using
246
+
sysv68).
247
+
Otherwise, say N.
+1
fs/partitions/Makefile
+1
fs/partitions/Makefile
+4
fs/partitions/check.c
+4
fs/partitions/check.c
···
34
34
#include "ultrix.h"
35
35
#include "efi.h"
36
36
#include "karma.h"
37
+
#include "sysv68.h"
37
38
38
39
#ifdef CONFIG_BLK_DEV_MD
39
40
extern void md_autodetect_dev(dev_t dev);
···
105
104
#endif
106
105
#ifdef CONFIG_KARMA_PARTITION
107
106
karma_partition,
107
+
#endif
108
+
#ifdef CONFIG_SYSV68_PARTITION
109
+
sysv68_partition,
108
110
#endif
109
111
NULL
110
112
};
+92
fs/partitions/sysv68.c
+92
fs/partitions/sysv68.c
···
1
+
/*
2
+
* fs/partitions/sysv68.c
3
+
*
4
+
* Copyright (C) 2007 Philippe De Muyter <phdm@macqel.be>
5
+
*/
6
+
7
+
#include "check.h"
8
+
#include "sysv68.h"
9
+
10
+
/*
11
+
* Volume ID structure: on first 256-bytes sector of disk
12
+
*/
13
+
14
+
struct volumeid {
15
+
u8 vid_unused[248];
16
+
u8 vid_mac[8]; /* ASCII string "MOTOROLA" */
17
+
};
18
+
19
+
/*
20
+
* config block: second 256-bytes sector on disk
21
+
*/
22
+
23
+
struct dkconfig {
24
+
u8 ios_unused0[128];
25
+
__be32 ios_slcblk; /* Slice table block number */
26
+
__be16 ios_slccnt; /* Number of entries in slice table */
27
+
u8 ios_unused1[122];
28
+
};
29
+
30
+
/*
31
+
* combined volumeid and dkconfig block
32
+
*/
33
+
34
+
struct dkblk0 {
35
+
struct volumeid dk_vid;
36
+
struct dkconfig dk_ios;
37
+
};
38
+
39
+
/*
40
+
* Slice Table Structure
41
+
*/
42
+
43
+
struct slice {
44
+
__be32 nblocks; /* slice size (in blocks) */
45
+
__be32 blkoff; /* block offset of slice */
46
+
};
47
+
48
+
49
+
int sysv68_partition(struct parsed_partitions *state, struct block_device *bdev)
50
+
{
51
+
int i, slices;
52
+
int slot = 1;
53
+
Sector sect;
54
+
unsigned char *data;
55
+
struct dkblk0 *b;
56
+
struct slice *slice;
57
+
58
+
data = read_dev_sector(bdev, 0, §);
59
+
if (!data)
60
+
return -1;
61
+
62
+
b = (struct dkblk0 *)data;
63
+
if (memcmp(b->dk_vid.vid_mac, "MOTOROLA", sizeof(b->dk_vid.vid_mac))) {
64
+
put_dev_sector(sect);
65
+
return 0;
66
+
}
67
+
slices = be16_to_cpu(b->dk_ios.ios_slccnt);
68
+
i = be32_to_cpu(b->dk_ios.ios_slcblk);
69
+
put_dev_sector(sect);
70
+
71
+
data = read_dev_sector(bdev, i, §);
72
+
if (!data)
73
+
return -1;
74
+
75
+
slices -= 1; /* last slice is the whole disk */
76
+
printk("sysV68: %s(s%u)", state->name, slices);
77
+
slice = (struct slice *)data;
78
+
for (i = 0; i < slices; i++, slice++) {
79
+
if (slot == state->limit)
80
+
break;
81
+
if (be32_to_cpu(slice->nblocks)) {
82
+
put_partition(state, slot,
83
+
be32_to_cpu(slice->blkoff),
84
+
be32_to_cpu(slice->nblocks));
85
+
printk("(s%u)", i);
86
+
}
87
+
slot++;
88
+
}
89
+
printk("\n");
90
+
put_dev_sector(sect);
91
+
return 1;
92
+
}
+1
fs/partitions/sysv68.h
+1
fs/partitions/sysv68.h
···
1
+
extern int sysv68_partition(struct parsed_partitions *state, struct block_device *bdev);