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sys: FspFileNode acquire/release

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This commit is contained in:
Bill Zissimopoulos
2016-01-18 12:56:22 -08:00
parent c488949022
commit 512d7dc950
2 changed files with 34 additions and 14 deletions
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8
src/sys/create.c
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@@ -374,7 +374,7 @@ NTSTATUS FspFsvolCreatePrepare(
FileObject = FspIopRequestContext(Request, RequestFileObject);
/* lock the FileNode for Paging IO */
Success = FspFileNodePgioLockExclusive(FileNode, FALSE);
Success = FspFileNodePgioTryAcquireExclusive(FileNode);
if (!Success)
{
/* repost the IRP to retry later */
@@ -392,7 +392,7 @@ NTSTATUS FspFsvolCreatePrepare(
Success = MmCanFileBeTruncated(&FileNode->NonPaged->SectionObjectPointers, &Zero);
if (!Success)
{
FspFileNodePgioUnlock(FileNode);
FspFileNodePgioRelease(FileNode);
FspFsvolCreatePostClose(FileNode, (UINT_PTR)FileObject->FsContext2);
FspFileNodeClose(FileNode, FileObject, 0);
@@ -612,7 +612,7 @@ VOID FspFsvolCreateComplete(
/* did the user-mode file system sent us a failure code? */
if (!NT_SUCCESS(Response->IoStatus.Status))
{
FspFileNodePgioUnlock(FileNode);
FspFileNodePgioRelease(FileNode);
FspFileNodeClose(FileNode, FileObject, 0);
@@ -626,7 +626,7 @@ VOID FspFsvolCreateComplete(
FileNode->Header.FileSize.QuadPart = Response->Rsp.Overwrite.FileSize;
CcSetFileSizes(FileObject, (PCC_FILE_SIZES)&FileNode->Header.AllocationSize);
FspFileNodePgioUnlock(FileNode);
FspFileNodePgioRelease(FileNode);
/* SUCCESS! */
FspIopRequestContext(Request, RequestFileNode) = 0;

40
src/sys/driver.h
View File

@@ -561,32 +561,52 @@ VOID FspFileNodeDereference(FSP_FILE_NODE *FileNode)
FspFileNodeDelete(FileNode);
}
static inline
BOOLEAN FspFileNodeLockShared(FSP_FILE_NODE *FileNode, BOOLEAN Wait)
VOID FspFileNodeAcquireShared(FSP_FILE_NODE *FileNode)
{
return ExAcquireResourceSharedLite(FileNode->Header.Resource, Wait);
ExAcquireResourceSharedLite(FileNode->Header.Resource, TRUE);
}
static inline
BOOLEAN FspFileNodeLockExclusive(FSP_FILE_NODE *FileNode, BOOLEAN Wait)
BOOLEAN FspFileNodeTryAcquireShared(FSP_FILE_NODE *FileNode)
{
return ExAcquireResourceExclusiveLite(FileNode->Header.Resource, Wait);
return ExAcquireResourceSharedLite(FileNode->Header.Resource, FALSE);
}
static inline
VOID FspFileNodeUnlock(FSP_FILE_NODE *FileNode)
VOID FspFileNodeAcquireExclusive(FSP_FILE_NODE *FileNode)
{
ExAcquireResourceExclusiveLite(FileNode->Header.Resource, TRUE);
}
static inline
BOOLEAN FspFileNodeTryAcquireExclusive(FSP_FILE_NODE *FileNode)
{
return ExAcquireResourceExclusiveLite(FileNode->Header.Resource, FALSE);
}
static inline
VOID FspFileNodeRelease(FSP_FILE_NODE *FileNode)
{
ExReleaseResourceLite(FileNode->Header.Resource);
}
static inline
BOOLEAN FspFileNodePgioLockShared(FSP_FILE_NODE *FileNode, BOOLEAN Wait)
VOID FspFileNodePgioAcquireShared(FSP_FILE_NODE *FileNode)
{
return ExAcquireResourceSharedLite(FileNode->Header.PagingIoResource, Wait);
ExAcquireResourceSharedLite(FileNode->Header.PagingIoResource, TRUE);
}
static inline
BOOLEAN FspFileNodePgioLockExclusive(FSP_FILE_NODE *FileNode, BOOLEAN Wait)
BOOLEAN FspFileNodePgioTryAcquireShared(FSP_FILE_NODE *FileNode)
{
return ExAcquireResourceExclusiveLite(FileNode->Header.PagingIoResource, Wait);
return ExAcquireResourceSharedLite(FileNode->Header.PagingIoResource, FALSE);
}
static inline
VOID FspFileNodePgioUnlock(FSP_FILE_NODE *FileNode)
VOID FspFileNodePgioAcquireExclusive(FSP_FILE_NODE *FileNode)
{
ExAcquireResourceExclusiveLite(FileNode->Header.PagingIoResource, TRUE);
}
static inline
BOOLEAN FspFileNodePgioTryAcquireExclusive(FSP_FILE_NODE *FileNode)
{
return ExAcquireResourceExclusiveLite(FileNode->Header.PagingIoResource, FALSE);
}
static inline
VOID FspFileNodePgioRelease(FSP_FILE_NODE *FileNode)
{
ExReleaseResourceLite(FileNode->Header.PagingIoResource);
}