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Clear the user_partition_data::user_data fields before updating the

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BPartition structure with the data retrieved from the kernel. For new
partitions the field is not set in the next step and later code would
use an initialized pointer.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22471 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2007-10-07 14:56:26 +00:00
parent 7ede8e4494
commit 04adb291a6
2 changed files with 19 additions and 1 deletions
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2
headers/private/storage/DiskDevice.h
View File

@ -52,6 +52,8 @@ private:
status_t _Update(bool shadow, bool *updated);
status_t _Update(user_disk_device_data *data, bool *updated);
static void _ClearUserData(user_partition_data* data);
virtual bool _AcceptVisitor(BDiskDeviceVisitor *visitor, int32 level);
user_disk_device_data *fDeviceData;

16
src/kits/storage/DiskDevice.cpp
View File

@ -377,11 +377,16 @@ BDiskDevice::_Update(user_disk_device_data *data, bool *updated)
if (!updated)
updated = &_updated;
*updated = false;
// clear the user_data fields first
_ClearUserData(&data->device_partition_data);
// remove obsolete partitions
status_t error = _RemoveObsoleteDescendants(&data->device_partition_data,
updated);
if (error != B_OK)
return error;
// update existing partitions and add new ones
error = BPartition::_Update(&data->device_partition_data, updated);
if (error == B_OK) {
@ -404,3 +409,14 @@ BDiskDevice::_AcceptVisitor(BDiskDeviceVisitor *visitor, int32 level)
return visitor->Visit(this);
}
// _ClearUserData
void
BDiskDevice::_ClearUserData(user_partition_data* data)
{
data->user_data = NULL;
// recurse
for (int i = 0; i < data->child_count; i++)
_ClearUserData(data->children[i]);
}