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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos 2015-12-02 21:56:39 -08:00
parent 26b4727a0b
commit 171c8eff04
5 changed files with 20 additions and 8 deletions
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5
inc/winfsp/fsctl.h
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@ -52,7 +52,8 @@ typedef struct
UINT16 Version; UINT16 Version;
UINT16 SectorSize; UINT16 SectorSize;
UINT32 SerialNumber; UINT32 SerialNumber;
BOOLEAN EaSupported; BOOLEAN EaSupported; /* supports extended attributes (unimplemented; set to 0) */
BOOLEAN FileNameRequired; /* FileName required for all operations (not just Create) */
} FSP_FSCTL_VOLUME_PARAMS; } FSP_FSCTL_VOLUME_PARAMS;
typedef struct typedef struct
{ {
@ -65,9 +66,9 @@ typedef struct
struct struct
{ {
UINT8 Placeholder; UINT8 Placeholder;
WCHAR FileName[];
} Create; } Create;
} Req; } Req;
WCHAR FileName[];
} FSP_FSCTL_TRANSACT_REQ; } FSP_FSCTL_TRANSACT_REQ;
typedef struct typedef struct
{ {

2
src/sys/create.c
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@ -166,7 +166,7 @@ static NTSTATUS FspFsvolCreate(
*/ */
/* create the user-mode file system request */ /* create the user-mode file system request */
Result = FspIopCreateRequest(Irp, FsContext->FileName.Length, &Request); Result = FspIopCreateRequest(Irp, &FsContext->FileName, 0, &Request);
if (!NT_SUCCESS(Result)) if (!NT_SUCCESS(Result))
{ {
FspFileContextDelete(FsContext); FspFileContextDelete(FsContext);

3
src/sys/driver.h
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@ -246,7 +246,8 @@ BOOLEAN FspIoqStartProcessingIrp(FSP_IOQ *Ioq, PIRP Irp);
PIRP FspIoqEndProcessingIrp(FSP_IOQ *Ioq, UINT_PTR IrpHint); PIRP FspIoqEndProcessingIrp(FSP_IOQ *Ioq, UINT_PTR IrpHint);
/* I/O processing */ /* I/O processing */
NTSTATUS FspIopCreateRequest(PIRP Irp, ULONG ExtraSize, FSP_FSCTL_TRANSACT_REQ **PRequest); NTSTATUS FspIopCreateRequest(
PIRP Irp, PUNICODE_STRING FileName, ULONG ExtraSize, FSP_FSCTL_TRANSACT_REQ **PRequest);
VOID FspIopCompleteRequest(PIRP Irp, NTSTATUS Result); VOID FspIopCompleteRequest(PIRP Irp, NTSTATUS Result);
VOID FspIopDispatchComplete(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response); VOID FspIopDispatchComplete(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);

2
src/sys/fileobj.c
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@ -36,7 +36,7 @@ NTSTATUS FspFileContextCreate(ULONG ExtraSize, FSP_FILE_CONTEXT **PFsContext)
RtlZeroMemory(NonPaged, sizeof *NonPaged); RtlZeroMemory(NonPaged, sizeof *NonPaged);
ExInitializeFastMutex(&NonPaged->HeaderFastMutex); ExInitializeFastMutex(&NonPaged->HeaderFastMutex);
RtlZeroMemory(FsContext, sizeof *FsContext + ExtraSize); RtlZeroMemory(FsContext, sizeof *FsContext);
FsRtlSetupAdvancedHeader(&FsContext->Header, &NonPaged->HeaderFastMutex); FsRtlSetupAdvancedHeader(&FsContext->Header, &NonPaged->HeaderFastMutex);
FsContext->NonPaged = NonPaged; FsContext->NonPaged = NonPaged;
RtlInitEmptyUnicodeString(&FsContext->FileName, FsContext->FileNameBuf, (USHORT)ExtraSize); RtlInitEmptyUnicodeString(&FsContext->FileName, FsContext->FileNameBuf, (USHORT)ExtraSize);

16
src/sys/iop.c
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@ -6,7 +6,8 @@
#include <sys/driver.h> #include <sys/driver.h>
NTSTATUS FspIopCreateRequest(PIRP Irp, ULONG ExtraSize, FSP_FSCTL_TRANSACT_REQ **PRequest); NTSTATUS FspIopCreateRequest(
PIRP Irp, PUNICODE_STRING FileName, ULONG ExtraSize, FSP_FSCTL_TRANSACT_REQ **PRequest);
VOID FspIopDispatchComplete(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response); VOID FspIopDispatchComplete(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);
#ifdef ALLOC_PRAGMA #ifdef ALLOC_PRAGMA
@ -14,20 +15,29 @@ VOID FspIopDispatchComplete(PIRP Irp, const FSP_FSCTL_TRANSACT_RSP *Response);
#pragma alloc_text(PAGE, FspIopDispatchComplete) #pragma alloc_text(PAGE, FspIopDispatchComplete)
#endif #endif
NTSTATUS FspIopCreateRequest(PIRP Irp, ULONG ExtraSize, FSP_FSCTL_TRANSACT_REQ **PRequest) NTSTATUS FspIopCreateRequest(
PIRP Irp, PUNICODE_STRING FileName, ULONG ExtraSize, FSP_FSCTL_TRANSACT_REQ **PRequest)
{ {
PAGED_CODE(); PAGED_CODE();
*PRequest = 0; *PRequest = 0;
if (0 != FileName)
ExtraSize += FileName->Length + sizeof(WCHAR);
FSP_FSCTL_TRANSACT_REQ *Request = ExAllocatePoolWithTag(PagedPool, FSP_FSCTL_TRANSACT_REQ *Request = ExAllocatePoolWithTag(PagedPool,
sizeof *Request + ExtraSize, FSP_TAG); sizeof *Request + ExtraSize, FSP_TAG);
if (0 == Request) if (0 == Request)
return STATUS_INSUFFICIENT_RESOURCES; return STATUS_INSUFFICIENT_RESOURCES;
RtlZeroMemory(Request, sizeof *Request + ExtraSize); RtlZeroMemory(Request, sizeof *Request);
Request->Size = (UINT16)(sizeof *Request + ExtraSize); Request->Size = (UINT16)(sizeof *Request + ExtraSize);
Request->Hint = (UINT_PTR)Irp; Request->Hint = (UINT_PTR)Irp;
if (0 != FileName)
{
memcpy(Request->FileName, FileName->Buffer, FileName->Length);
Request->FileName[FileName->Length / 2] = L'\0';
}
Irp->Tail.Overlay.DriverContext[0] = Request; Irp->Tail.Overlay.DriverContext[0] = Request;
*PRequest = Request; *PRequest = Request;