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sys: IRP_MJ_LOCK_CONTROL

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This commit is contained in:
Bill Zissimopoulos
2016-04-06 15:41:16 -07:00
parent b729500d7b
commit 218ad0be8c
3 changed files with 94 additions and 8 deletions
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49
src/sys/file.c
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@ -48,6 +48,9 @@ BOOLEAN FspFileNodeTrySetDirInfo(FSP_FILE_NODE *FileNode, PCVOID Buffer, ULONG S
static VOID FspFileNodeInvalidateDirInfo(FSP_FILE_NODE *FileNode);
VOID FspFileNodeNotifyChange(FSP_FILE_NODE *FileNode,
ULONG Filter, ULONG Action);
NTSTATUS FspFileNodeProcessLockIrp(FSP_FILE_NODE *FileNode, PIRP Irp,
PBOOLEAN PIrpRelinquished);
static NTSTATUS FspFileNodeCompleteLockIrp(PVOID Context, PIRP Irp);
NTSTATUS FspFileDescCreate(FSP_FILE_DESC **PFileDesc);
VOID FspFileDescDelete(FSP_FILE_DESC *FileDesc);
NTSTATUS FspFileDescResetDirectoryPattern(FSP_FILE_DESC *FileDesc,
@ -85,6 +88,7 @@ NTSTATUS FspFileDescResetDirectoryPattern(FSP_FILE_DESC *FileDesc,
// !#pragma alloc_text(PAGE, FspFileNodeTrySetDirInfo)
// !#pragma alloc_text(PAGE, FspFileNodeInvalidateDirInfo)
#pragma alloc_text(PAGE, FspFileNodeNotifyChange)
#pragma alloc_text(PAGE, FspFileNodeCompleteLockIrp)
#pragma alloc_text(PAGE, FspFileDescCreate)
#pragma alloc_text(PAGE, FspFileDescDelete)
#pragma alloc_text(PAGE, FspFileDescResetDirectoryPattern)
@ -178,6 +182,8 @@ NTSTATUS FspFileNodeCreate(PDEVICE_OBJECT DeviceObject,
FspDeviceReference(FileNode->FsvolDeviceObject);
RtlInitEmptyUnicodeString(&FileNode->FileName, FileNode->FileNameBuf, (USHORT)ExtraSize);
FsRtlInitializeFileLock(&FileNode->FileLock, FspFileNodeCompleteLockIrp, 0);
*PFileNode = FileNode;
return STATUS_SUCCESS;
@ -190,6 +196,8 @@ VOID FspFileNodeDelete(FSP_FILE_NODE *FileNode)
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension =
FspFsvolDeviceExtension(FileNode->FsvolDeviceObject);
FsRtlUninitializeFileLock(&FileNode->FileLock);
FsRtlTeardownPerStreamContexts(&FileNode->Header);
FspMetaCacheInvalidateItem(FsvolDeviceExtension->DirInfoCache, FileNode->NonPaged->DirInfo);
@ -932,6 +940,47 @@ VOID FspFileNodeNotifyChange(FSP_FILE_NODE *FileNode,
0, Filter, Action);
}
NTSTATUS FspFileNodeProcessLockIrp(FSP_FILE_NODE *FileNode, PIRP Irp,
PBOOLEAN PIrpRelinquished)
{
PAGED_CODE();
NTSTATUS Result;
FspFileNodeAcquireShared(FileNode, Main);
FspFileNodeSetOwner(FileNode, Main, Irp);
try
{
Result = FsRtlProcessFileLock(&FileNode->FileLock, Irp, FileNode);
*PIrpRelinquished = TRUE;
}
except (EXCEPTION_EXECUTE_HANDLER)
{
FspFileNodeReleaseOwner(FileNode, Main, Irp);
Result = GetExceptionCode();
*PIrpRelinquished = FALSE;
}
return Result;
}
static NTSTATUS FspFileNodeCompleteLockIrp(PVOID Context, PIRP Irp)
{
PAGED_CODE();
FSP_FILE_NODE *FileNode = Context;
NTSTATUS Result = Irp->IoStatus.Status;
FspFileNodeReleaseOwner(FileNode, Main, Irp);
DEBUGLOGIRP(Irp, Result);
FspIopCompleteIrp(Irp, Result);
return Result;
}
NTSTATUS FspFileDescCreate(FSP_FILE_DESC **PFileDesc)
{
PAGED_CODE();