124 lines
2.5 KiB
C
124 lines
2.5 KiB
C
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/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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cmapi2.c
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Abstract:
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This module contains CM level entry points for the registry,
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particularly those which we don't want to link into tools,
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setup, the boot loader, etc.
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Author:
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Bryan M. Willman (bryanwi) 26-Jan-1993
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Revision History:
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--*/
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#include "cmp.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE,CmDeleteKey)
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#endif
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NTSTATUS
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CmDeleteKey(
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IN PCM_KEY_BODY KeyBody
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)
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/*++
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Routine Description:
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Delete a registry key, clean up Notify block.
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Arguments:
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KeyBody - pointer to key handle object
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Return Value:
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NTSTATUS
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--*/
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{
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NTSTATUS status;
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PCM_KEY_NODE ptarget;
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PHHIVE Hive;
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HCELL_INDEX Cell;
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PCM_KEY_CONTROL_BLOCK KeyControlBlock;
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CMLOG(CML_WORKER, CMS_CM) KdPrint(("CmDeleteKey\n"));
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CmpLockRegistryExclusive();
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//
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// If already marked for deletion, storage is gone, so
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// do nothing and return success.
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//
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KeyControlBlock = KeyBody->KeyControlBlock;
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if (KeyControlBlock->Delete == TRUE) {
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status = STATUS_SUCCESS;
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goto Exit;
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}
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ptarget = KeyControlBlock->KeyNode;
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if ( ((ptarget->SubKeyCounts[Stable] +
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ptarget->SubKeyCounts[Volatile]) == 0) &&
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((ptarget->Flags & KEY_NO_DELETE) == 0))
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{
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//
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// Cell is NOT marked NO_DELETE and does NOT have children
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// Send Notification while key still present, if delete fails,
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// we'll have sent a spurious notify, that doesn't matter
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// Delete the actual storage
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//
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Hive = KeyControlBlock->KeyHive;
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Cell = KeyControlBlock->KeyCell;
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CmpReportNotify(
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KeyControlBlock->FullName,
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Hive,
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Cell,
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REG_NOTIFY_CHANGE_NAME
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);
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status = CmpFreeKeyByCell(Hive, Cell, TRUE);
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if (NT_SUCCESS(status)) {
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//
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// post any waiting notifies
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//
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CmpFlushNotify(KeyBody);
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//
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// Remove kcb from kcb list/tree, but do NOT
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// free its storage, CmDelete will do that when
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// the last refering handle is closed
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//
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CmpRemoveKeyControlBlock(KeyControlBlock);
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KeyControlBlock->KeyHive = NULL;
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KeyControlBlock->KeyCell = HCELL_NIL;
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KeyControlBlock->KeyNode = NULL;
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KeyControlBlock->Delete = TRUE;
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}
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} else {
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status = STATUS_CANNOT_DELETE;
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}
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Exit:
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CmpUnlockRegistry();
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return status;
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}
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