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sys: IRP_MJ_SET_INFORMATION: FileDispositionInformation

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This commit is contained in:
Bill Zissimopoulos
2016-02-09 13:28:11 -08:00
parent 1b63e7d506
commit 8307bc27bb
1 changed files with 109 additions and 74 deletions
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183
src/sys/fileinfo.c
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@@ -37,17 +37,18 @@ static NTSTATUS FspFsvolSetAllocationInformation(PFILE_OBJECT FileObject,
static NTSTATUS FspFsvolSetBasicInformation(PFILE_OBJECT FileObject,
PVOID Buffer, ULONG Length,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_TRANSACT_RSP *Response);
static NTSTATUS FspFsvolSetDispositionInformation(PFILE_OBJECT FileObject,
PVOID Buffer, ULONG Length,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_TRANSACT_RSP *Response);
static NTSTATUS FspFsvolSetEndOfFileInformation(PFILE_OBJECT FileObject,
PVOID Buffer, ULONG Length, BOOLEAN AdvanceOnly,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_TRANSACT_RSP *Response);
static NTSTATUS FspFsvolSetPositionInformation(PFILE_OBJECT FileObject,
PVOID Buffer, ULONG Length);
static NTSTATUS FspFsvolSetDispositionInformation(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
static NTSTATUS FspFsvolSetDispositionInformationSuccess(
PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);
static NTSTATUS FspFsvolSetRenameInformation(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
NTSTATUS FspFsvolSetRenameInformationSuccess(
static NTSTATUS FspFsvolSetRenameInformationSuccess(
PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);
static NTSTATUS FspFsvolSetInformation(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp);
@@ -70,9 +71,10 @@ FSP_DRIVER_DISPATCH FspSetInformation;
#pragma alloc_text(PAGE, FspFsvolQueryInformationRequestFini)
#pragma alloc_text(PAGE, FspFsvolSetAllocationInformation)
#pragma alloc_text(PAGE, FspFsvolSetBasicInformation)
#pragma alloc_text(PAGE, FspFsvolSetDispositionInformation)
#pragma alloc_text(PAGE, FspFsvolSetEndOfFileInformation)
#pragma alloc_text(PAGE, FspFsvolSetPositionInformation)
#pragma alloc_text(PAGE, FspFsvolSetDispositionInformation)
#pragma alloc_text(PAGE, FspFsvolSetDispositionInformationSuccess)
#pragma alloc_text(PAGE, FspFsvolSetRenameInformation)
#pragma alloc_text(PAGE, FspFsvolSetRenameInformationSuccess)
#pragma alloc_text(PAGE, FspFsvolSetInformation)
@@ -640,51 +642,6 @@ static NTSTATUS FspFsvolSetBasicInformation(PFILE_OBJECT FileObject,
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolSetDispositionInformation(PFILE_OBJECT FileObject,
PVOID Buffer, ULONG Length,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_TRANSACT_RSP *Response)
{
PAGED_CODE();
if (0 == Request)
{
if (sizeof(FILE_DISPOSITION_INFORMATION) > Length)
return STATUS_INVALID_PARAMETER;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
if (FileNode->IsRootDirectory)
/* cannot delete root directory */
return STATUS_CANNOT_DELETE;
}
else if (0 == Response)
{
PFILE_DISPOSITION_INFORMATION Info = (PFILE_DISPOSITION_INFORMATION)Buffer;
BOOLEAN Success;
if (Info->DeleteFile)
{
/* make sure no process is mapping the file as an image */
Success = MmFlushImageSection(FileObject->SectionObjectPointer,
MmFlushForDelete);
if (!Success)
return STATUS_CANNOT_DELETE;
}
Request->Req.SetInformation.Info.Disposition.Delete = Info->DeleteFile;
}
else
{
PFILE_DISPOSITION_INFORMATION Info = (PFILE_DISPOSITION_INFORMATION)Buffer;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
FileNode->DeletePending = Info->DeleteFile;
FileObject->DeletePending = Info->DeleteFile;
}
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolSetEndOfFileInformation(PFILE_OBJECT FileObject,
PVOID Buffer, ULONG Length, BOOLEAN AdvanceOnly,
FSP_FSCTL_TRANSACT_REQ *Request, const FSP_FSCTL_TRANSACT_RSP *Response)
@@ -739,6 +696,92 @@ static NTSTATUS FspFsvolSetPositionInformation(PFILE_OBJECT FileObject,
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolSetDispositionInformation(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
PAGED_CODE();
NTSTATUS Result;
PFILE_OBJECT FileObject = IrpSp->FileObject;
PFILE_DISPOSITION_INFORMATION Info = (PFILE_DISPOSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
ULONG Length = IrpSp->Parameters.SetFile.Length;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
FSP_FILE_DESC *FileDesc = FileObject->FsContext2;
FSP_FSCTL_TRANSACT_REQ *Request;
BOOLEAN Success;
ASSERT(FileNode == FileDesc->FileNode);
if (sizeof(FILE_DISPOSITION_INFORMATION) > Length)
return STATUS_INVALID_PARAMETER;
if (FileNode->IsRootDirectory)
/* cannot delete root directory */
return STATUS_CANNOT_DELETE;
FspFsvolDeviceFileRenameAcquireShared(FsvolDeviceObject);
FspFileNodeAcquireExclusive(FileNode, Full);
if (Info->DeleteFile)
{
/* make sure no process is mapping the file as an image */
Success = MmFlushImageSection(FileObject->SectionObjectPointer, MmFlushForDelete);
if (!Success)
{
Result = STATUS_CANNOT_DELETE;
goto unlock_exit;
}
}
Result = FspIopCreateRequestEx(Irp, &FileNode->FileName, 0,
FspFsvolSetInformationRequestFini, &Request);
if (!NT_SUCCESS(Result))
goto unlock_exit;
Request->Kind = FspFsctlTransactSetInformationKind;
Request->Req.SetInformation.UserContext = FileNode->UserContext;
Request->Req.SetInformation.UserContext2 = FileDesc->UserContext2;
Request->Req.SetInformation.FileInformationClass = FileDispositionInformation;
Request->Req.SetInformation.Info.Disposition.Delete = Info->DeleteFile;
FspFsvolDeviceFileRenameSetOwner(FsvolDeviceObject, Request);
FspFileNodeSetOwner(FileNode, Full, Request);
FspIopRequestContext(Request, RequestFileNode) = FileNode;
FspIopRequestContext(Request, RequestDeviceObject) = FsvolDeviceObject;
return FSP_STATUS_IOQ_POST;
unlock_exit:
FspFileNodeRelease(FileNode, Full);
FspFsvolDeviceFileRenameRelease(FsvolDeviceObject);
return Result;
}
static NTSTATUS FspFsvolSetDispositionInformationSuccess(
PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response)
{
PAGED_CODE();
PIO_STACK_LOCATION IrpSp = IoGetCurrentIrpStackLocation(Irp);
PDEVICE_OBJECT FsvolDeviceObject = IrpSp->DeviceObject;
PFILE_OBJECT FileObject = IrpSp->FileObject;
PFILE_DISPOSITION_INFORMATION Info = (PFILE_DISPOSITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
FSP_FSCTL_TRANSACT_REQ *Request = FspIrpRequest(Irp);
FileNode->DeletePending = Info->DeleteFile;
FileObject->DeletePending = Info->DeleteFile;
FspIopRequestContext(Request, RequestFileNode) = 0;
FspIopRequestContext(Request, RequestDeviceObject) = 0;
FspFileNodeReleaseOwner(FileNode, Full, Request);
FspFsvolDeviceFileRenameRelease(FsvolDeviceObject);
Irp->IoStatus.Information = 0;
return STATUS_SUCCESS;
}
static NTSTATUS FspFsvolSetRenameInformation(
PDEVICE_OBJECT FsvolDeviceObject, PIRP Irp, PIO_STACK_LOCATION IrpSp)
{
@@ -829,14 +872,14 @@ static NTSTATUS FspFsvolSetRenameInformation(
FspIopRequestContext(Request, RequestDeviceObject) = FsvolDeviceObject;
/*
* Special rules for renaming open files:
* - A file cannot be renamed if it has any open handles,
* unless it is only open because of a batch opportunistic lock (oplock)
* and the batch oplock can be broken immediately.
* - A file cannot be renamed if a file with the same name exists
* and has open handles (except in the batch-oplock case described earlier).
* - A directory cannot be renamed if it or any of its subdirectories contains a file
* that has open handles (except in the batch-oplock case described earlier).
* Special rules for renaming open files:
* - A file cannot be renamed if it has any open handles,
* unless it is only open because of a batch opportunistic lock (oplock)
* and the batch oplock can be broken immediately.
* - A file cannot be renamed if a file with the same name exists
* and has open handles (except in the batch-oplock case described earlier).
* - A directory cannot be renamed if it or any of its subdirectories contains a file
* that has open handles (except in the batch-oplock case described earlier).
*/
NewFileName.Length = NewFileName.MaximumLength =
@@ -873,7 +916,7 @@ unlock_exit:
return Result;
}
NTSTATUS FspFsvolSetRenameInformationSuccess(
static NTSTATUS FspFsvolSetRenameInformationSuccess(
PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response)
{
PAGED_CODE();
@@ -913,7 +956,9 @@ static NTSTATUS FspFsvolSetInformation(
FILE_INFORMATION_CLASS FileInformationClass = IrpSp->Parameters.SetFile.FileInformationClass;
/* special case FileRenameInformation */
/* special case FileDispositionInformation/FileRenameInformation */
if (FileDispositionInformation == FileInformationClass)
return FspFsvolSetDispositionInformation(FsvolDeviceObject, Irp, IrpSp);
if (FileRenameInformation == FileInformationClass)
return FspFsvolSetRenameInformation(FsvolDeviceObject, Irp, IrpSp);
@@ -930,9 +975,6 @@ static NTSTATUS FspFsvolSetInformation(
case FileBasicInformation:
Result = FspFsvolSetBasicInformation(FileObject, Buffer, Length, 0, 0);
break;
case FileDispositionInformation:
Result = FspFsvolSetDispositionInformation(FileObject, Buffer, Length, 0, 0);
break;
case FileEndOfFileInformation:
Result = FspFsvolSetEndOfFileInformation(FileObject, Buffer, Length,
IrpSp->Parameters.SetFile.AdvanceOnly, 0, 0);
@@ -984,9 +1026,6 @@ static NTSTATUS FspFsvolSetInformation(
case FileBasicInformation:
Result = FspFsvolSetBasicInformation(FileObject, Buffer, Length, Request, 0);
break;
case FileDispositionInformation:
Result = FspFsvolSetDispositionInformation(FileObject, Buffer, Length, Request, 0);
break;
case FileEndOfFileInformation:
Result = FspFsvolSetEndOfFileInformation(FileObject, Buffer, Length,
IrpSp->Parameters.SetFile.AdvanceOnly, Request, 0);
@@ -1017,12 +1056,11 @@ NTSTATUS FspFsvolSetInformationComplete(
FILE_INFORMATION_CLASS FileInformationClass = IrpSp->Parameters.SetFile.FileInformationClass;
/* special case FileRenameInformation */
/* special case FileDispositionInformation/FileRenameInformation */
if (FileDispositionInformation == FileInformationClass)
FSP_RETURN(Result = FspFsvolSetDispositionInformationSuccess(Irp, Response));
if (FileRenameInformation == FileInformationClass)
{
Result = FspFsvolSetRenameInformationSuccess(Irp, Response);
FSP_RETURN();
}
FSP_RETURN(Result = FspFsvolSetRenameInformationSuccess(Irp, Response));
PFILE_OBJECT FileObject = IrpSp->FileObject;
FSP_FILE_NODE *FileNode = FileObject->FsContext;
@@ -1038,9 +1076,6 @@ NTSTATUS FspFsvolSetInformationComplete(
case FileBasicInformation:
Result = FspFsvolSetBasicInformation(FileObject, Buffer, Length, Request, Response);
break;
case FileDispositionInformation:
Result = FspFsvolSetDispositionInformation(FileObject, Buffer, Length, Request, Response);
break;
case FileEndOfFileInformation:
Result = FspFsvolSetEndOfFileInformation(FileObject, Buffer, Length,
IrpSp->Parameters.SetFile.AdvanceOnly, Request, Response);