shaba/lvm2
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Fix to partition table detection code.

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This commit is contained in:
Alasdair Kergon 2004-11-24 20:38:05 +00:00
parent 7f1e8db796
commit 2e6051674b
3 changed files with 11 additions and 11 deletions
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2
VERSION
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@ -1 +1 @@
2.00.27-cvs (2004-11-23)
2.00.27-cvs (2004-11-24)

3
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.00.27 -
Version 2.00.27 - 24th November 2004
====================================
Fix to partition table detection code.
Improve filter debug mesgs.
Version 2.00.26 - 23rd November 2004

17
lib/device/device.c
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@ -20,30 +20,29 @@
#include "filter.h"
#define PART_MAGIC 0xAA55
#define PART_OFFSET UINT64_C(510)
static int _is_whole_disk(struct device *dev)
static int _is_partitionable(struct device *dev)
{
int parts = max_partitions(MINOR(dev->dev));
if (!parts || !(MINOR(dev->dev) % parts))
return 1;
int parts = max_partitions(MAJOR(dev->dev));
if (!parts || (MINOR(dev->dev) % parts))
return 0;
return 1;
}
static int _has_partition_table(struct device *dev)
{
int ret = 0;
uint32_t part_magic;
uint64_t part_offset;
if (!dev_open(dev)) {
stack;
return -1;
}
part_offset = sizeof(unsigned short) * 255;
if (dev_read(dev, part_offset, sizeof(part_magic), &part_magic) &&
if (dev_read(dev, PART_OFFSET, sizeof(part_magic), &part_magic) &&
(part_magic == PART_MAGIC))
ret = 1;
@ -55,7 +54,7 @@ static int _has_partition_table(struct device *dev)
int is_partitioned_dev(struct device *dev)
{
if (_is_whole_disk(dev))
if (!_is_partitionable(dev))
return 0;
return _has_partition_table(dev);