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sys: store FileInfo in FileNode's

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This commit is contained in:
Bill Zissimopoulos
2016-01-23 14:01:53 -08:00
parent af36418f43
commit 69fd1ebd6c
7 changed files with 133 additions and 4 deletions
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107
src/sys/file.c
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@ -24,7 +24,9 @@ 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,
PBOOLEAN PDeletePending);
VOID FspFileNodeGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileInfo);
BOOLEAN FspFileNodeTryGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileInfo);
VOID FspFileNodeSetFileInfo(FSP_FILE_NODE *FileNode, const FSP_FSCTL_FILE_INFO *FileInfo);
NTSTATUS FspFileDescCreate(FSP_FILE_DESC **PFileDesc);
VOID FspFileDescDelete(FSP_FILE_DESC *FileDesc);
@ -38,6 +40,9 @@ VOID FspFileDescDelete(FSP_FILE_DESC *FileDesc);
#pragma alloc_text(PAGE, FspFileNodeRelease)
#pragma alloc_text(PAGE, FspFileNodeOpen)
#pragma alloc_text(PAGE, FspFileNodeClose)
#pragma alloc_text(PAGE, FspFileNodeGetFileInfo)
#pragma alloc_text(PAGE, FspFileNodeTryGetFileInfo)
#pragma alloc_text(PAGE, FspFileNodeSetFileInfo)
#pragma alloc_text(PAGE, FspFileDescCreate)
#pragma alloc_text(PAGE, FspFileDescDelete)
#endif
@ -64,6 +69,7 @@ NTSTATUS FspFileNodeCreate(PDEVICE_OBJECT DeviceObject,
ExInitializeResourceLite(&NonPaged->Resource);
ExInitializeResourceLite(&NonPaged->PagingIoResource);
ExInitializeFastMutex(&NonPaged->HeaderFastMutex);
KeInitializeSpinLock(&NonPaged->InfoSpinLock);
RtlZeroMemory(FileNode, sizeof *FileNode + ExtraSize);
FileNode->Header.NodeTypeCode = FspFileNodeFileKind;
@ -312,6 +318,105 @@ VOID FspFileNodeClose(FSP_FILE_NODE *FileNode, PFILE_OBJECT FileObject,
*PDeletePending = Deleted && DeletePending;
}
static VOID FspFileNodeGetFileInfoNp(FSP_FILE_NODE_NONPAGED *FileNodeNp, FSP_FSCTL_FILE_INFO *FileInfoNp)
{
// !PAGED_CODE();
KIRQL Irql;
KeAcquireSpinLock(&FileNodeNp->InfoSpinLock, &Irql);
FileInfoNp->FileAttributes = FileNodeNp->FileAttributes;
FileInfoNp->ReparseTag = FileNodeNp->ReparseTag;
FileInfoNp->CreationTime = FileNodeNp->CreationTime;
FileInfoNp->LastAccessTime = FileNodeNp->LastAccessTime;
FileInfoNp->LastWriteTime = FileNodeNp->LastWriteTime;
FileInfoNp->ChangeTime = FileNodeNp->ChangeTime;
KeReleaseSpinLock(&FileNodeNp->InfoSpinLock, Irql);
}
static BOOLEAN FspFileNodeTryGetFileInfoNp(FSP_FILE_NODE_NONPAGED *FileNodeNp,
FSP_FSCTL_FILE_INFO *FileInfoNp)
{
// !PAGED_CODE();
KIRQL Irql;
BOOLEAN Result;
KeAcquireSpinLock(&FileNodeNp->InfoSpinLock, &Irql);
if (0 < FileNodeNp->InfoExpirationTime && FileNodeNp->InfoExpirationTime < KeQueryInterruptTime())
{
FileInfoNp->FileAttributes = FileNodeNp->FileAttributes;
FileInfoNp->ReparseTag = FileNodeNp->ReparseTag;
FileInfoNp->CreationTime = FileNodeNp->CreationTime;
FileInfoNp->LastAccessTime = FileNodeNp->LastAccessTime;
FileInfoNp->LastWriteTime = FileNodeNp->LastWriteTime;
FileInfoNp->ChangeTime = FileNodeNp->ChangeTime;
Result = TRUE;
}
else
Result = FALSE;
KeReleaseSpinLock(&FileNodeNp->InfoSpinLock, Irql);
return Result;
}
static VOID FspFileNodeSetFileInfoNp(FSP_FILE_NODE_NONPAGED *FileNodeNp,
const FSP_FSCTL_FILE_INFO *FileInfoNp, UINT64 FileInfoTimeout)
{
// !PAGED_CODE();
KIRQL Irql;
KeAcquireSpinLock(&FileNodeNp->InfoSpinLock, &Irql);
FileNodeNp->FileAttributes = FileInfoNp->FileAttributes;
FileNodeNp->ReparseTag = FileInfoNp->ReparseTag;
FileNodeNp->CreationTime = FileInfoNp->CreationTime;
FileNodeNp->LastAccessTime = FileInfoNp->LastAccessTime;
FileNodeNp->LastWriteTime = FileInfoNp->LastWriteTime;
FileNodeNp->ChangeTime = FileInfoNp->ChangeTime;
FileNodeNp->InfoExpirationTime = 0 != FileInfoTimeout ?
KeQueryInterruptTime() + FileInfoTimeout : 0;
KeReleaseSpinLock(&FileNodeNp->InfoSpinLock, Irql);
}
VOID FspFileNodeGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileInfo)
{
PAGED_CODE();
FSP_FILE_NODE_NONPAGED *FileNodeNp = FileNode->NonPaged;
FSP_FSCTL_FILE_INFO FileInfoNp;
FspFileNodeGetFileInfoNp(FileNodeNp, &FileInfoNp);
*FileInfo = FileInfoNp;
}
BOOLEAN FspFileNodeTryGetFileInfo(FSP_FILE_NODE *FileNode, FSP_FSCTL_FILE_INFO *FileInfo)
{
PAGED_CODE();
FSP_FILE_NODE_NONPAGED *FileNodeNp = FileNode->NonPaged;
FSP_FSCTL_FILE_INFO FileInfoNp;
if (!FspFileNodeTryGetFileInfoNp(FileNodeNp, &FileInfoNp))
return FALSE;
*FileInfo = FileInfoNp;
return TRUE;
}
VOID FspFileNodeSetFileInfo(FSP_FILE_NODE *FileNode, const FSP_FSCTL_FILE_INFO *FileInfo)
{
PAGED_CODE();
UINT64 FileInfoTimeout = FspFsvolDeviceExtension(FileNode->FsvolDeviceObject)->
VolumeParams.FileInfoTimeout * 10000ULL;
FSP_FILE_NODE_NONPAGED *FileNodeNp = FileNode->NonPaged;
FSP_FSCTL_FILE_INFO FileInfoNp = *FileInfo;
FspFileNodeSetFileInfoNp(FileNodeNp, &FileInfoNp, FileInfoTimeout);
}
NTSTATUS FspFileDescCreate(FSP_FILE_DESC **PFileDesc)
{
PAGED_CODE();