reactos/ntoskrnl/config/cmkeydel.c
Timo Kreuzer 6afbc8f483 Hopefully create a branch and not destroy the svn repository.
svn path=/branches/reactos-yarotows/; revision=45219
2010-01-23 23:25:04 +00:00

221 lines
6.6 KiB
C

/*
* PROJECT: ReactOS Kernel
* LICENSE: GPL - See COPYING in the top level directory
* FILE: ntoskrnl/config/cmkeydel.c
* PURPOSE: Configuration Manager - Key Body Deletion
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
*/
/* INCLUDES ******************************************************************/
#include "ntoskrnl.h"
#define NDEBUG
#include "debug.h"
/* FUNCTIONS *****************************************************************/
BOOLEAN
NTAPI
CmpMarkKeyDirty(IN PHHIVE Hive,
IN HCELL_INDEX Cell,
IN BOOLEAN CheckNoSubkeys)
{
PCELL_DATA CellData, ListData, SecurityData, ValueData;
ULONG i;
/* Get the cell data for our target */
CellData = HvGetCell(Hive, Cell);
if (!CellData) return FALSE;
/* Check if sanity checks requested */
if (CheckNoSubkeys)
{
/* Do them */
ASSERT(CellData->u.KeyNode.SubKeyCounts[Stable] == 0);
ASSERT(CellData->u.KeyNode.SubKeyCounts[Volatile] == 0);
}
/* If this is an exit hive, there's nothing to do */
if (CellData->u.KeyNode.Flags & KEY_HIVE_EXIT)
{
/* Release the cell and get out */
HvReleaseCell(Hive, Cell);
return TRUE;
}
/* Otherwise, mark it dirty and release it */
HvMarkCellDirty(Hive, Cell, FALSE);
HvReleaseCell(Hive, Cell);
/* Check if we have a class */
if (CellData->u.KeyNode.Class != HCELL_NIL)
{
/* Mark it dirty */
HvMarkCellDirty(Hive, CellData->u.KeyNode.Class, FALSE);
}
/* Check if we have security */
if (CellData->u.KeyNode.Security != HCELL_NIL)
{
/* Mark it dirty */
HvMarkCellDirty(Hive, CellData->u.KeyNode.Security, FALSE);
/* Get the security data and release it */
SecurityData = HvGetCell(Hive, CellData->u.KeyNode.Security);
if (!SecurityData) ASSERT(FALSE);
HvReleaseCell(Hive, CellData->u.KeyNode.Security);
/* Mark the security links dirty too */
HvMarkCellDirty(Hive, SecurityData->u.KeySecurity.Flink, FALSE);
HvMarkCellDirty(Hive, SecurityData->u.KeySecurity.Blink, FALSE);
}
/* Check if we have any values */
if (CellData->u.KeyNode.ValueList.Count > 0)
{
/* Dirty the value list */
HvMarkCellDirty(Hive, CellData->u.KeyNode.ValueList.List, FALSE);
/* Get the list data itself, and release it */
ListData = HvGetCell(Hive, CellData->u.KeyNode.ValueList.List);
if (!ListData) ASSERT(FALSE);
HvReleaseCell(Hive, CellData->u.KeyNode.ValueList.List);
/* Loop all values */
for (i = 0; i < CellData->u.KeyNode.ValueList.Count; i++)
{
/* Dirty each value */
HvMarkCellDirty(Hive, ListData->u.KeyList[i], FALSE);
/* Get the value data and release it */
ValueData = HvGetCell(Hive, ListData->u.KeyList[i]);
ASSERT(ValueData);
HvReleaseCell(Hive,ListData->u.KeyList[i]);
/* Mark the value data dirty too */
if (!CmpMarkValueDataDirty(Hive, &ValueData->u.KeyValue))
{
/* Failure */
return FALSE;
}
}
}
/* If this is an entry hive, we're done */
if (CellData->u.KeyNode.Flags & KEY_HIVE_ENTRY) return TRUE;
/* Otherwise mark the index dirty too */
if (!CmpMarkIndexDirty(Hive, CellData->u.KeyNode.Parent, Cell))
{
/* Failure */
return FALSE;
}
/* Finally, mark the parent dirty */
HvMarkCellDirty(Hive, CellData->u.KeyNode.Parent, FALSE);
return TRUE;
}
BOOLEAN
NTAPI
CmpFreeKeyBody(IN PHHIVE Hive,
IN HCELL_INDEX Cell)
{
PCELL_DATA CellData;
/* Get the key node */
CellData = HvGetCell(Hive, Cell);
if (!CellData) ASSERT(FALSE);
/* Check if we can delete the child cells */
if (!(CellData->u.KeyNode.Flags & KEY_HIVE_EXIT))
{
/* Check if we have a security cell */
if (CellData->u.KeyNode.Security != HCELL_NIL)
{
/* Free the security cell */
HvFreeCell(Hive, CellData->u.KeyNode.Security);
}
/* Check if we have a class */
if (CellData->u.KeyNode.ClassLength > 0)
{
/* Free it */
HvFreeCell(Hive, CellData->u.KeyNode.Class);
}
}
/* Release and free the cell */
HvReleaseCell(Hive, Cell);
HvFreeCell(Hive, Cell);
return TRUE;
}
NTSTATUS
NTAPI
CmpFreeKeyByCell(IN PHHIVE Hive,
IN HCELL_INDEX Cell,
IN BOOLEAN Unlink)
{
PCELL_DATA CellData, ParentData, ListData;
ULONG i;
BOOLEAN Result;
/* Mark the entire key dirty */
CmpMarkKeyDirty(Hive, Cell ,TRUE);
/* Get the target node and release it */
CellData = HvGetCell(Hive, Cell);
if (!CellData) ASSERT(FALSE);
HvReleaseCell(Hive, Cell);
/* Make sure we don't have subkeys */
ASSERT((CellData->u.KeyNode.SubKeyCounts[Stable] +
CellData->u.KeyNode.SubKeyCounts[Volatile]) == 0);
/* Check if we have to unlink */
if (Unlink)
{
/* Remove the subkey */
Result = CmpRemoveSubKey(Hive, CellData->u.KeyNode.Parent, Cell);
if (!Result) return STATUS_INSUFFICIENT_RESOURCES;
/* Get the parent node and release it */
ParentData = HvGetCell(Hive, CellData->u.KeyNode.Parent);
if (!ParentData) ASSERT(FALSE);
HvReleaseCell(Hive, CellData->u.KeyNode.Parent);
/* Check if the parent node has no more subkeys */
if (!(ParentData->u.KeyNode.SubKeyCounts[Stable] +
ParentData->u.KeyNode.SubKeyCounts[Volatile]))
{
/* Then free the cached name/class lengths */
ParentData->u.KeyNode.MaxNameLen = 0;
ParentData->u.KeyNode.MaxClassLen = 0;
}
}
/* Check if we have any values */
if (CellData->u.KeyNode.ValueList.Count > 0)
{
/* Get the value list and release it */
ListData = HvGetCell(Hive, CellData->u.KeyNode.ValueList.List);
if (!ListData) ASSERT(FALSE);
HvReleaseCell(Hive, CellData->u.KeyNode.ValueList.List);
/* Loop every value */
for (i = 0; i < CellData->u.KeyNode.ValueList.Count; i++)
{
/* Free it */
if (!CmpFreeValue(Hive, ListData->u.KeyList[i])) ASSERT(FALSE);
}
/* Free the value list */
HvFreeCell(Hive, CellData->u.KeyNode.ValueList.List);
}
/* Free the key body itself, and then return our status */
if (!CmpFreeKeyBody(Hive, Cell)) return STATUS_INSUFFICIENT_RESOURCES;
return STATUS_SUCCESS;
}