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fsctl.h: FspFsctlTransact{Produce,Consume}{Request,Response}

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This commit is contained in:
Bill Zissimopoulos
2015-11-26 00:06:10 -08:00
parent bafb947b9f
commit 4762f6d2e8
2 changed files with 50 additions and 20 deletions
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31
inc/winfsp/fsctl.h
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@ -31,7 +31,6 @@ extern const __declspec(selectany) GUID FspFsvrtDeviceClassGuid =
#define FSP_FSCTL_CREATE_BUFFER_SIZE 128
#define FSP_FSCTL_TRANSACT_BUFFER_SIZE 4096
#define FSP_FSCTL_TRANSACT_REQ_SIZEMAX 1536
/* marshalling */
#pragma warning(push)
@ -62,6 +61,36 @@ typedef struct
} Req;
} FSP_TRANSACT_RSP;
#pragma warning(pop)
static inline FSP_TRANSACT_REQ *FspFsctlTransactProduceRequest(
FSP_TRANSACT_REQ *Request, SIZE_T RequestSize, PVOID RequestBufEnd)
{
PVOID NextRequest = (PUINT8)Request + RequestSize;
return NextRequest <= RequestBufEnd ? NextRequest : 0;
}
static inline const FSP_TRANSACT_REQ *FspFsctlTransactConsumeRequest(
const FSP_TRANSACT_REQ *Request, PVOID RequestBufEnd)
{
if ((PUINT8)Request + sizeof(Request->Size) > (PUINT8)RequestBufEnd ||
sizeof(FSP_TRANSACT_REQ) > Request->Size)
return 0;
PVOID NextRequest = (PUINT8)Request + Request->Size;
return NextRequest <= RequestBufEnd ? NextRequest : 0;
}
static inline FSP_TRANSACT_RSP *FspFsctlTransactProduceResponse(
FSP_TRANSACT_RSP *Response, SIZE_T ResponseSize, PVOID ResponseBufEnd)
{
PVOID NextResponse = (PUINT8)Response + ResponseSize;
return NextResponse <= ResponseBufEnd ? NextResponse : 0;
}
static inline const FSP_TRANSACT_RSP *FspFsctlTransactConsumeResponse(
const FSP_TRANSACT_RSP *Response, PVOID ResponseBufEnd)
{
if ((PUINT8)Response + sizeof(Response->Size) > (PUINT8)ResponseBufEnd ||
sizeof(FSP_TRANSACT_RSP) > Response->Size)
return 0;
PVOID NextResponse = (PUINT8)Response + Response->Size;
return NextResponse <= ResponseBufEnd ? NextResponse : 0;
}
#if !defined(WINFSP_SYS_DRIVER_H_INTERNAL)
NTSTATUS FspFsctlCreateVolume(PWSTR DevicePath, PSECURITY_DESCRIPTOR SecurityDescriptor,