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sys: FspFileNodeSetOwner(), FspFileNodeReleaseOwner()

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This commit is contained in:
Bill Zissimopoulos
2016-01-30 22:02:30 -08:00
parent b2e6ec0f44
commit 7b5a7cd2f0
4 changed files with 66 additions and 22 deletions
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40
src/sys/file.c
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@ -13,7 +13,9 @@ VOID FspFileNodeAcquireSharedF(FSP_FILE_NODE *FileNode, ULONG Flags);
BOOLEAN FspFileNodeTryAcquireSharedF(FSP_FILE_NODE *FileNode, ULONG Flags);
VOID FspFileNodeAcquireExclusiveF(FSP_FILE_NODE *FileNode, ULONG Flags);
BOOLEAN FspFileNodeTryAcquireExclusiveF(FSP_FILE_NODE *FileNode, ULONG Flags);
VOID FspFileNodeSetOwnerF(FSP_FILE_NODE *FileNode, ULONG Flags, PVOID Owner);
VOID FspFileNodeReleaseF(FSP_FILE_NODE *FileNode, ULONG Flags);
VOID FspFileNodeReleaseOwnerF(FSP_FILE_NODE *FileNode, ULONG Flags, PVOID Owner);
FSP_FILE_NODE *FspFileNodeOpen(FSP_FILE_NODE *FileNode, PFILE_OBJECT FileObject,
UINT32 GrantedAccess, UINT32 ShareAccess, BOOLEAN DeleteOnClose, NTSTATUS *PResult);
VOID FspFileNodeClose(FSP_FILE_NODE *FileNode, PFILE_OBJECT FileObject,
@ -33,7 +35,9 @@ VOID FspFileObjectSetSizes(PFILE_OBJECT FileObject,
#pragma alloc_text(PAGE, FspFileNodeTryAcquireSharedF)
#pragma alloc_text(PAGE, FspFileNodeAcquireExclusiveF)
#pragma alloc_text(PAGE, FspFileNodeTryAcquireExclusiveF)
#pragma alloc_text(PAGE, FspFileNodeSetOwnerF)
#pragma alloc_text(PAGE, FspFileNodeReleaseF)
#pragma alloc_text(PAGE, FspFileNodeReleaseOwnerF)
#pragma alloc_text(PAGE, FspFileNodeOpen)
#pragma alloc_text(PAGE, FspFileNodeClose)
#pragma alloc_text(PAGE, FspFileNodeGetFileInfo)
@ -179,6 +183,19 @@ BOOLEAN FspFileNodeTryAcquireExclusiveF(FSP_FILE_NODE *FileNode, ULONG Flags)
return Result;
}
VOID FspFileNodeSetOwnerF(FSP_FILE_NODE *FileNode, ULONG Flags, PVOID Owner)
{
PAGED_CODE();
Owner = (PVOID)((UINT_PTR)Owner | 3);
if (Flags & FspFileNodeAcquireMain)
ExSetResourceOwnerPointer(FileNode->Header.Resource, Owner);
if (Flags & FspFileNodeAcquirePgio)
ExSetResourceOwnerPointer(FileNode->Header.PagingIoResource, Owner);
}
VOID FspFileNodeReleaseF(FSP_FILE_NODE *FileNode, ULONG Flags)
{
PAGED_CODE();
@ -190,6 +207,29 @@ VOID FspFileNodeReleaseF(FSP_FILE_NODE *FileNode, ULONG Flags)
ExReleaseResourceLite(FileNode->Header.Resource);
}
VOID FspFileNodeReleaseOwnerF(FSP_FILE_NODE *FileNode, ULONG Flags, PVOID Owner)
{
PAGED_CODE();
Owner = (PVOID)((UINT_PTR)Owner | 3);
if (Flags & FspFileNodeAcquirePgio)
{
if (ExIsResourceAcquiredLite(FileNode->Header.PagingIoResource))
ExReleaseResourceLite(FileNode->Header.PagingIoResource);
else
ExReleaseResourceForThreadLite(FileNode->Header.PagingIoResource, (ERESOURCE_THREAD)Owner);
}
if (Flags & FspFileNodeAcquireMain)
{
if (ExIsResourceAcquiredLite(FileNode->Header.Resource))
ExReleaseResourceLite(FileNode->Header.Resource);
else
ExReleaseResourceForThreadLite(FileNode->Header.Resource, (ERESOURCE_THREAD)Owner);
}
}
FSP_FILE_NODE *FspFileNodeOpen(FSP_FILE_NODE *FileNode, PFILE_OBJECT FileObject,
UINT32 GrantedAccess, UINT32 ShareAccess, BOOLEAN DeleteOnClose, NTSTATUS *PResult)
{