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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos 2015-12-05 00:05:25 -08:00
parent 0187b77f8b
commit f0ee13b04c
2 changed files with 23 additions and 13 deletions
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35
src/sys/create.c
View File

@ -344,7 +344,6 @@ VOID FspFsvolCreateComplete(
{ {
FSP_ENTER_IOC(PAGED_CODE()); FSP_ENTER_IOC(PAGED_CODE());
PDEVICE_OBJECT DeviceObject = IrpSp->DeviceObject;
PFILE_OBJECT FileObject = IrpSp->FileObject; PFILE_OBJECT FileObject = IrpSp->FileObject;
/* if the user-mode file system sent us a failure code, fail the request now */ /* if the user-mode file system sent us a failure code, fail the request now */
@ -352,36 +351,48 @@ VOID FspFsvolCreateComplete(
{ {
FspFileContextDelete(FileObject->FsContext); FspFileContextDelete(FileObject->FsContext);
FileObject->FsContext = 0; FileObject->FsContext = 0;
goto exit; Irp->IoStatus.Information = Response->IoStatus.Information;
Result = Response->IoStatus.Status;
FSP_RETURN();
} }
/* record the user-mode file system contexts */ /* record the user-mode file system contexts */
FSP_FILE_CONTEXT *FsContext = FileObject->FsContext; FSP_FILE_CONTEXT *FsContext = FileObject->FsContext;
BOOLEAN Inserted;
FsContext->UserContext = Response->Rsp.Create.UserContext; FsContext->UserContext = Response->Rsp.Create.UserContext;
FileObject->FsContext2 = (PVOID)(UINT_PTR)Response->Rsp.Create.UserContext2; FileObject->FsContext2 = (PVOID)(UINT_PTR)Response->Rsp.Create.UserContext2;
/* insert the new FsContext into our generic table */ /* insert the new FsContext into our generic table */
FsContext = FspFsvolDeviceInsertContext(DeviceObject, PDEVICE_OBJECT DeviceObject = IrpSp->DeviceObject;
FsContext->UserContext, FsContext, &Inserted); FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(DeviceObject);
BOOLEAN Inserted;
ExAcquireResourceExclusiveLite(&FsvolDeviceExtension->Base.Resource, TRUE);
try
{
FsContext = FspFsvolDeviceInsertContext(DeviceObject,
FsContext->UserContext, FsContext, &Inserted);
if (0 != FsContext)
FspFileContextOpen(FsContext);
}
finally
{
ExReleaseResourceLite(&FsvolDeviceExtension->Base.Resource);
}
/* did we fail to insert? */
if (0 == FsContext) if (0 == FsContext)
{ {
FspFsvolCreateClose(Irp, Response); FspFsvolCreateClose(Irp, Response);
FSP_RETURN(Result = STATUS_INSUFFICIENT_RESOURCES); Result = STATUS_INSUFFICIENT_RESOURCES;
FSP_RETURN();
} }
/* if it was not inserted, an FsContext with the same UserContext already exists; reuse it */ /* does an FsContext with the same UserContext already exist? */
if (!Inserted) if (!Inserted)
{ {
FspFileContextDelete(FileObject->FsContext); FspFileContextDelete(FileObject->FsContext);
FspFileContextOpen(FsContext);
FileObject->FsContext = FsContext; FileObject->FsContext = FsContext;
} }
exit:
Irp->IoStatus.Information = Response->IoStatus.Information;
Result = Response->IoStatus.Status;
FSP_LEAVE_IOC( FSP_LEAVE_IOC(
"FileObject=%p[%p:\"%wZ\"]", "FileObject=%p[%p:\"%wZ\"]",
IrpSp->FileObject, IrpSp->FileObject->RelatedFileObject, IrpSp->FileObject->FileName); IrpSp->FileObject, IrpSp->FileObject->RelatedFileObject, IrpSp->FileObject->FileName);

1
src/sys/fileobj.c
View File

@ -46,7 +46,6 @@ NTSTATUS FspFileContextCreate(ULONG ExtraSize, FSP_FILE_CONTEXT **PFsContext)
FsContext->Header.PagingIoResource = &NonPaged->PagingIoResource; FsContext->Header.PagingIoResource = &NonPaged->PagingIoResource;
FsRtlSetupAdvancedHeader(&FsContext->Header, &NonPaged->HeaderFastMutex); FsRtlSetupAdvancedHeader(&FsContext->Header, &NonPaged->HeaderFastMutex);
FsContext->NonPaged = NonPaged; FsContext->NonPaged = NonPaged;
FsContext->OpenCount = 1;
RtlInitEmptyUnicodeString(&FsContext->FileName, FsContext->FileNameBuf, (USHORT)ExtraSize); RtlInitEmptyUnicodeString(&FsContext->FileName, FsContext->FileNameBuf, (USHORT)ExtraSize);
*PFsContext = FsContext; *PFsContext = FsContext;