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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos 2016-01-07 23:13:29 -08:00
parent e83cecded9
commit d8cde24fcd
1 changed files with 26 additions and 31 deletions
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57
src/sys/create.c
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@ -15,8 +15,7 @@ static NTSTATUS FspFsvolCreate(
FSP_IOPREP_DISPATCH FspFsvolCreatePrepare; FSP_IOPREP_DISPATCH FspFsvolCreatePrepare;
FSP_IOCMPL_DISPATCH FspFsvolCreateComplete; FSP_IOCMPL_DISPATCH FspFsvolCreateComplete;
static VOID FspFsvolCreatePostClose( static VOID FspFsvolCreatePostClose(
PDEVICE_OBJECT FsvolDeviceObject, PUNICODE_STRING FileName, FSP_FILE_CONTEXT *FsContext, UINT64 UserContext2, NTSTATUS CloseStatus);
UINT64 UserContext, UINT64 UserContext2, NTSTATUS CloseStatus);
static FSP_IOP_REQUEST_FINI FspFsvolCreateRequestFini; static FSP_IOP_REQUEST_FINI FspFsvolCreateRequestFini;
FSP_DRIVER_DISPATCH FspCreate; FSP_DRIVER_DISPATCH FspCreate;
@ -446,20 +445,11 @@ VOID FspFsvolCreateComplete(
FSP_RETURN(); FSP_RETURN();
} }
/* get the FsContext from our Request and associate it with the Response UserContext */ /* populate the FsContext fields from the Response */
FsContext->Header.AllocationSize.QuadPart = Response->Rsp.Create.Opened.AllocationSize; FsContext->Header.AllocationSize.QuadPart = Response->Rsp.Create.Opened.AllocationSize;
FsContext->Header.FileSize.QuadPart = Response->Rsp.Create.Opened.AllocationSize; FsContext->Header.FileSize.QuadPart = Response->Rsp.Create.Opened.AllocationSize;
FsContext->UserContext = Response->Rsp.Create.Opened.UserContext; FsContext->UserContext = Response->Rsp.Create.Opened.UserContext;
/* set up the FileObject */
if (0 != FsvolDeviceExtension->FsvrtDeviceObject)
#pragma prefast(disable:28175, "We are a filesystem: ok to access Vpb")
FileObject->Vpb = FsvolDeviceExtension->FsvrtDeviceObject->Vpb;
FileObject->SectionObjectPointer = &FsContext->NonPaged->SectionObjectPointers;
FileObject->PrivateCacheMap = 0;
FileObject->FsContext = FsContext;
FileObject->FsContext2 = (PVOID)(UINT_PTR)Response->Rsp.Create.Opened.UserContext2;
DeleteOnClose = BooleanFlagOn(Request->Req.Create.CreateOptions, FILE_DELETE_ON_CLOSE); DeleteOnClose = BooleanFlagOn(Request->Req.Create.CreateOptions, FILE_DELETE_ON_CLOSE);
/* open the FsContext */ /* open the FsContext */
@ -469,23 +459,23 @@ VOID FspFsvolCreateComplete(
if (0 == OpenedFsContext) if (0 == OpenedFsContext)
{ {
/* unable to open the FsContext; post a close Create2 request */ /* unable to open the FsContext; post a close Create2 request */
FspFsvolCreatePostClose(FsvolDeviceObject, FspFsvolCreatePostClose(FsContext,
FsvolDeviceExtension->VolumeParams.FileNameRequired ? &FsContext->FileName : 0,
Response->Rsp.Create.Opened.UserContext,
Response->Rsp.Create.Opened.UserContext2, Response->Rsp.Create.Opened.UserContext2,
Result); Result);
FspFileContextRelease(FsContext);
FSP_RETURN(); FSP_RETURN();
} }
if (OpenedFsContext != FsContext) FsContext = OpenedFsContext;
{
FspFileContextRelease(FsContext); /* set up the FileObject */
FsContext = OpenedFsContext; if (0 != FsvolDeviceExtension->FsvrtDeviceObject)
} #pragma prefast(disable:28175, "We are a filesystem: ok to access Vpb")
FspIopRequestContext(Request, RequestFsContext) = FsContext; FileObject->Vpb = FsvolDeviceExtension->FsvrtDeviceObject->Vpb;
FileObject->SectionObjectPointer = &FsContext->NonPaged->SectionObjectPointers;
FileObject->PrivateCacheMap = 0;
FileObject->FsContext = FsContext;
FileObject->FsContext2 = (PVOID)(UINT_PTR)Response->Rsp.Create.Opened.UserContext2;
if (FILE_OPENED == Response->IoStatus.Information) if (FILE_OPENED == Response->IoStatus.Information)
{ {
@ -506,9 +496,9 @@ VOID FspFsvolCreateComplete(
{ {
Result = DeleteOnClose ? STATUS_CANNOT_DELETE : STATUS_SHARING_VIOLATION; Result = DeleteOnClose ? STATUS_CANNOT_DELETE : STATUS_SHARING_VIOLATION;
FspFsvolCreatePostClose(FsvolDeviceObject, FspFileContextClose(FsContext, FileObject);
FsvolDeviceExtension->VolumeParams.FileNameRequired ? &FsContext->FileName : 0,
Response->Rsp.Create.Opened.UserContext, FspFsvolCreatePostClose(FsContext,
Response->Rsp.Create.Opened.UserContext2, Response->Rsp.Create.Opened.UserContext2,
Result); Result);
@ -529,7 +519,6 @@ VOID FspFsvolCreateComplete(
*/ */
/* delete the old request */ /* delete the old request */
FspIopRequestContext(Request, RequestFsContext) = 0;
FspIrpRequest(Irp) = 0; FspIrpRequest(Irp) = 0;
FspIopDeleteRequest(Request); FspIopDeleteRequest(Request);
@ -599,6 +588,9 @@ VOID FspFsvolCreateComplete(
FspFileContextPgioUnlock(FsContext); FspFileContextPgioUnlock(FsContext);
/* disassociate the FsContext from the Create2 request */
FspIopRequestContext(Request, RequestFsContext) = 0;
/* SUCCESS! */ /* SUCCESS! */
Irp->IoStatus.Information = Request->Req.Create2.Supersede ? FILE_SUPERSEDED : FILE_OVERWRITTEN; Irp->IoStatus.Information = Request->Req.Create2.Supersede ? FILE_SUPERSEDED : FILE_OVERWRITTEN;
Result = STATUS_SUCCESS; Result = STATUS_SUCCESS;
@ -612,21 +604,24 @@ VOID FspFsvolCreateComplete(
} }
static VOID FspFsvolCreatePostClose( static VOID FspFsvolCreatePostClose(
PDEVICE_OBJECT FsvolDeviceObject, PUNICODE_STRING FileName, FSP_FILE_CONTEXT *FsContext, UINT64 UserContext2, NTSTATUS CloseStatus)
UINT64 UserContext, UINT64 UserContext2, NTSTATUS CloseStatus)
{ {
PAGED_CODE(); PAGED_CODE();
ASSERT(STATUS_SUCCESS != CloseStatus); ASSERT(STATUS_SUCCESS != CloseStatus);
PDEVICE_OBJECT FsvolDeviceObject = FsContext->FsvolDeviceObject;
FSP_FSVOL_DEVICE_EXTENSION *FsvolDeviceExtension = FspFsvolDeviceExtension(FsvolDeviceObject);
FSP_FSCTL_TRANSACT_REQ *Request; FSP_FSCTL_TRANSACT_REQ *Request;
/* create the user-mode file system request; MustSucceed because we cannot fail */ /* create the user-mode file system request; MustSucceed because we cannot fail */
FspIopCreateRequestMustSucceed(0, FileName, 0, &Request); FspIopCreateRequestMustSucceed(0,
FsvolDeviceExtension->VolumeParams.FileNameRequired ? &FsContext->FileName : 0,
0, &Request);
/* populate the Create2 request */ /* populate the Create2 request */
Request->Kind = FspFsctlTransactCreate2Kind; Request->Kind = FspFsctlTransactCreate2Kind;
Request->Req.Create2.UserContext = UserContext; Request->Req.Create2.UserContext = FsContext->UserContext;
Request->Req.Create2.UserContext2 = UserContext2; Request->Req.Create2.UserContext2 = UserContext2;
Request->Req.Create2.CloseStatus = CloseStatus; Request->Req.Create2.CloseStatus = CloseStatus;