mirror of
https://github.com/reactos/reactos.git
synced 2024-11-05 22:26:39 +00:00
114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/*
|
|
* PROJECT: ReactOS Kernel
|
|
* LICENSE: GPL - See COPYING in the top level directory
|
|
* FILE: lib/cmlib/cmse.c
|
|
* PURPOSE: Configuration Manager Library - Security Subsystem Interface
|
|
* PROGRAMMERS: Hermes Belusca-Maito (hermes.belusca@sfr.fr)
|
|
*/
|
|
|
|
/* INCLUDES ******************************************************************/
|
|
|
|
#include "cmlib.h"
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/* FUNCTIONS *****************************************************************/
|
|
|
|
VOID
|
|
NTAPI
|
|
CmpRemoveSecurityCellList(IN PHHIVE Hive,
|
|
IN HCELL_INDEX SecurityCell)
|
|
{
|
|
PCM_KEY_SECURITY SecurityData, FlinkCell, BlinkCell;
|
|
|
|
PAGED_CODE();
|
|
|
|
// ASSERT( (((PCMHIVE)Hive)->HiveSecurityLockOwner == KeGetCurrentThread()) || (CmpTestRegistryLockExclusive() == TRUE) );
|
|
|
|
SecurityData = HvGetCell(Hive, SecurityCell);
|
|
if (!SecurityData) return;
|
|
|
|
FlinkCell = HvGetCell(Hive, SecurityData->Flink);
|
|
if (!FlinkCell)
|
|
{
|
|
HvReleaseCell(Hive, SecurityCell);
|
|
return;
|
|
}
|
|
|
|
BlinkCell = HvGetCell(Hive, SecurityData->Blink);
|
|
if (!BlinkCell)
|
|
{
|
|
HvReleaseCell(Hive, SecurityData->Flink);
|
|
HvReleaseCell(Hive, SecurityCell);
|
|
return;
|
|
}
|
|
|
|
/* Sanity checks */
|
|
ASSERT(FlinkCell->Blink == SecurityCell);
|
|
ASSERT(BlinkCell->Flink == SecurityCell);
|
|
|
|
/* Unlink the security block and free it */
|
|
FlinkCell->Blink = SecurityData->Blink;
|
|
BlinkCell->Flink = SecurityData->Flink;
|
|
#ifdef USE_CM_CACHE
|
|
CmpRemoveFromSecurityCache(Hive, SecurityCell);
|
|
#endif
|
|
|
|
/* Release the cells */
|
|
HvReleaseCell(Hive, SecurityData->Blink);
|
|
HvReleaseCell(Hive, SecurityData->Flink);
|
|
HvReleaseCell(Hive, SecurityCell);
|
|
}
|
|
|
|
VOID
|
|
NTAPI
|
|
CmpFreeSecurityDescriptor(IN PHHIVE Hive,
|
|
IN HCELL_INDEX Cell)
|
|
{
|
|
PCM_KEY_NODE CellData;
|
|
PCM_KEY_SECURITY SecurityData;
|
|
|
|
PAGED_CODE();
|
|
|
|
// ASSERT( (((PCMHIVE)Hive)->HiveSecurityLockOwner == KeGetCurrentThread()) || (CmpTestRegistryLockExclusive() == TRUE) );
|
|
|
|
CellData = HvGetCell(Hive, Cell);
|
|
if (!CellData) return;
|
|
|
|
ASSERT(CellData->Signature == CM_KEY_NODE_SIGNATURE);
|
|
|
|
// FIXME: ReactOS-specific: check whether this key has a security block.
|
|
// On Windows there is no such check, all keys seem to have a valid
|
|
// security block.
|
|
// If we remove this check on ReactOS (and continue running) then we get
|
|
// a BSOD at the end...
|
|
if (CellData->Security == HCELL_NIL)
|
|
{
|
|
DPRINT("Cell 0x%08x (data 0x%p) has no security block!\n", Cell, CellData);
|
|
HvReleaseCell(Hive, Cell);
|
|
return;
|
|
}
|
|
|
|
SecurityData = HvGetCell(Hive, CellData->Security);
|
|
if (!SecurityData)
|
|
{
|
|
HvReleaseCell(Hive, Cell);
|
|
return;
|
|
}
|
|
|
|
ASSERT(SecurityData->Signature == CM_KEY_SECURITY_SIGNATURE);
|
|
|
|
if (SecurityData->ReferenceCount > 1)
|
|
{
|
|
SecurityData->ReferenceCount--;
|
|
}
|
|
else // if (SecurityData->ReferenceCount <= 1)
|
|
{
|
|
CmpRemoveSecurityCellList(Hive, CellData->Security);
|
|
HvFreeCell(Hive, CellData->Security);
|
|
}
|
|
|
|
CellData->Security = HCELL_NIL;
|
|
HvReleaseCell(Hive, CellData->Security);
|
|
HvReleaseCell(Hive, Cell);
|
|
}
|