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sys: IRP_MJ_CREATE
This commit is contained in:
Bill Zissimopoulos
parent
3a3df24a40
commit
ca8a02bd9d
@ -21,8 +21,8 @@ extern const __declspec(selectany) GUID FspFsvrtDeviceClassGuid =
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/* alignment macros */
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#define FSP_FSCTL_ALIGN_UP(x, s) (((x) + ((s) - 1L)) & ~((s) - 1L))
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#define FSP_FSCTL_DEFAULT_ALIGNMENT (16)
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#define FSP_FSCTL_DECLSPEC_ALIGN __declspec(align(16))
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#define FSP_FSCTL_DEFAULT_ALIGNMENT (8)
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#define FSP_FSCTL_DECLSPEC_ALIGN __declspec(align(8))
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/* fsctl device codes */
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#define FSP_FSCTL_CREATE \
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@ -47,44 +47,97 @@ extern const __declspec(selectany) GUID FspFsvrtDeviceClassGuid =
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/* marshalling */
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#pragma warning(push)
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#pragma warning(disable:4200) /* zero-sized array in struct/union */
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enum
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{
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FspFsctlTransactUnknownKind = 0,
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FspFsctlTransactCreateKind = 'C',
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FspFsctlTransactCloseKind = 'c',
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FspFsctlTransactReadKind = 'R',
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FspFsctlTransactWriteKind = 'W',
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FspFsctlTransactQueryInformationKind = 'I',
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FspFsctlTransactSetInformationKind = 'i',
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FspFsctlTransactQueryEaKind = 'E',
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FspFsctlTransactSetEaKind = 'e',
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FspFsctlTransactFlushBuffersKind = 'F',
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FspFsctlTransactQueryVolumeInformationKind = 'V',
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FspFsctlTransactSetVolumeInformationKind = 'v',
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FspFsctlTransactDirectoryControlKind = 'D',
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FspFsctlTransactFileSystemControlKind = 'K',
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FspFsctlTransactDeviceControlKind = 'k',
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FspFsctlTransactShutdownKind = 'd',
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FspFsctlTransactLockControlKind = 'L',
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FspFsctlTransactCleanupKind = 'l',
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FspFsctlTransactQuerySecurityKind = 'S',
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FspFsctlTransactSetSecurityKind = 's',
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};
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typedef struct
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{
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UINT16 Version;
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UINT16 SectorSize;
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UINT32 SerialNumber;
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BOOLEAN EaSupported; /* supports extended attributes (unimplemented; set to 0) */
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BOOLEAN FileNameRequired; /* FileName required for all operations (not just Create) */
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UINT32 EaSupported:1; /* supports extended attributes (unimplemented; set to 0) */
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UINT32 FileNameRequired:1; /* FileName required for all operations (not just Create) */
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UINT32 NoAccessCheck:1; /* if set the user-mode flie system performs access checks */
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} FSP_FSCTL_VOLUME_PARAMS;
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typedef struct
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{
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UINT16 Version;
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UINT16 Size;
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UINT32 Kind;
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UINT64 Hint;
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UINT8 Kind;
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union
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{
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struct
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{
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UINT8 Placeholder;
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UINT32 CreateDisposition; /* FILE_{SUPERSEDE,CREATE,OPEN,OPEN_IF,OVERWRITE,OVERWRITE_IF} */
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UINT32 CreateOptions; /* FILE_{DIRECTORY_FILE,NON_DIRECTORY_FILE,etc.} */
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UINT32 FileAttributes; /* FILE_ATTRIBUTE_{NORMAL,DIRECTORY,etc.} */
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UINT64 AllocationSize; /* initial allocation size */
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UINT64 SecurityDescriptor; /* (PSECURITY_DESCRIPTOR); security to apply to new files */
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UINT64 EaBuffer; /* (PVOID); reserved; not currently implemented */
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UINT32 EaLength; /* (PVOID); reserved; not currently implemented */
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UINT64 AccessToken; /* (HANDLE); request access token; sent if NoAccessCheck is 0 */
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UINT32 DesiredAccess; /* FILE_{READ_DATA,WRITE_DATA,etc.} */
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UINT32 ShareAccess; /* FILE_SHARE_{READ,WRITE,DELETE} */
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UINT32 UserMode:1; /* request originated in user mode */
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UINT32 HasTraversePrivilege:1;
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/* requestor has TOKEN_HAS_TRAVERSE_PRIVILEGE */
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UINT32 OpenTargetDirectory:1;
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/* open target directory and report FILE_{EXISTS,DOES_NOT_EXIST} */
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UINT32 CaseSensitive:1; /* filename comparisons should be case-sensitive */
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} Create;
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struct
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{
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UINT64 UserContext;
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UINT64 UserContext2;
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} Cleanup;
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struct
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{
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UINT64 UserContext;
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UINT64 UserContext2;
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} Close;
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} Req;
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WCHAR FileName[];
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FSP_FSCTL_DECLSPEC_ALIGN WCHAR FileName[];
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} FSP_FSCTL_TRANSACT_REQ;
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typedef struct
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{
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UINT16 Version;
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UINT16 Size;
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UINT32 Kind;
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UINT64 Hint;
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struct
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{
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UINT32 Status;
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UINT64 Information;
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UINT32 Status;
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} IoStatus;
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UINT8 Kind;
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union
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{
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UINT8 Placeholder; // !!!: REMOVE
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} Req;
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struct
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{
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UINT64 UserContext; /* user context attached to an open file (unique file id) */
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UINT64 UserContext2; /* user context attached to a kernel file object */
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} Create;
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} Rsp;
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} FSP_FSCTL_TRANSACT_RSP;
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#pragma warning(pop)
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static inline FSP_FSCTL_TRANSACT_REQ *FspFsctlTransactProduceRequest(
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@ -57,17 +57,17 @@ static NTSTATUS FspFsvolCreate(
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PFILE_OBJECT RelatedFileObject = FileObject->RelatedFileObject;
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UNICODE_STRING FileName = FileObject->FileName;
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ULONG Flags = IrpSp->Flags;
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//KPROCESSOR_MODE RequestorMode = FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
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//PACCESS_STATE AccessState = IrpSp->Parameters.Create.SecurityContext->AccessState;
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//ACCESS_MASK DesiredAccess = IrpSp->Parameters.Create.SecurityContext->DesiredAccess;
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//USHORT ShareAccess = IrpSp->Parameters.Create.ShareAccess;
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//ULONG CreateDisposition = (IrpSp->Parameters.Create.Options >> 24) & 0xff;
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KPROCESSOR_MODE RequestorMode = FlagOn(Flags, SL_FORCE_ACCESS_CHECK) ? UserMode : Irp->RequestorMode;
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PACCESS_STATE AccessState = IrpSp->Parameters.Create.SecurityContext->AccessState;
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ACCESS_MASK DesiredAccess = IrpSp->Parameters.Create.SecurityContext->DesiredAccess;
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USHORT ShareAccess = IrpSp->Parameters.Create.ShareAccess;
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ULONG CreateDisposition = (IrpSp->Parameters.Create.Options >> 24) & 0xff;
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ULONG CreateOptions = IrpSp->Parameters.Create.Options & 0xffffff;
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//USHORT FileAttributes = IrpSp->Parameters.Create.FileAttributes;
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//LARGE_INTEGER AllocationSize = Irp->Overlay.AllocationSize;
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USHORT FileAttributes = IrpSp->Parameters.Create.FileAttributes;
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LARGE_INTEGER AllocationSize = Irp->Overlay.AllocationSize;
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PFILE_FULL_EA_INFORMATION EaBuffer = Irp->AssociatedIrp.SystemBuffer;
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//ULONG EaLength = IrpSp->Parameters.Create.EaLength;
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//BOOLEAN HasTraversePrivilege = BooleanFlagOn(AccessState->Flags, TOKEN_HAS_TRAVERSE_PRIVILEGE);
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BOOLEAN HasTraversePrivilege = BooleanFlagOn(AccessState->Flags, TOKEN_HAS_TRAVERSE_PRIVILEGE);
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BOOLEAN HasTrailingBackslash = FALSE;
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FSP_FILE_CONTEXT *FsContext = 0;
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FSP_FSCTL_TRANSACT_REQ *Request;
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@ -173,7 +173,23 @@ static NTSTATUS FspFsvolCreate(
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return Result;
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}
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/* !!!: populate the request */
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/* populate the Create request */
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Request->Kind = FspFsctlTransactCreateKind;
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Request->Req.Create.CreateDisposition = CreateDisposition;
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Request->Req.Create.CreateOptions = CreateOptions;
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Request->Req.Create.FileAttributes = FileAttributes;
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Request->Req.Create.AllocationSize = AllocationSize.QuadPart;
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Request->Req.Create.SecurityDescriptor = 0;
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Request->Req.Create.EaBuffer = 0;
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Request->Req.Create.EaLength = 0;
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Request->Req.Create.AccessToken = 0;
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Request->Req.Create.DesiredAccess = DesiredAccess;
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Request->Req.Create.ShareAccess = ShareAccess;
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Request->Req.Create.DesiredAccess = DesiredAccess;
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Request->Req.Create.UserMode = UserMode == RequestorMode;
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Request->Req.Create.HasTraversePrivilege = HasTraversePrivilege;
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Request->Req.Create.CaseSensitive = BooleanFlagOn(Flags, SL_CASE_SENSITIVE);
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Request->Req.Create.OpenTargetDirectory = BooleanFlagOn(Flags, SL_OPEN_TARGET_DIRECTORY);
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/*
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* Post the IRP to our Ioq; we do this here instead of at FSP_LEAVE_MJ time,
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@ -38,7 +38,7 @@ NTSTATUS FspFileContextCreate(ULONG ExtraSize, FSP_FILE_CONTEXT **PFsContext)
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ExInitializeResourceLite(&NonPaged->PagingIoResource);
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ExInitializeFastMutex(&NonPaged->HeaderFastMutex);
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RtlZeroMemory(FsContext, sizeof *FsContext);
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RtlZeroMemory(FsContext, sizeof *FsContext + ExtraSize);
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FsContext->Header.NodeTypeCode = 'F';
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FsContext->Header.NodeByteSize = sizeof *FsContext;
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FsContext->Header.IsFastIoPossible = FastIoIsQuestionable;
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@ -30,7 +30,7 @@ NTSTATUS FspIopCreateRequest(
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if (0 == Request)
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return STATUS_INSUFFICIENT_RESOURCES;
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RtlZeroMemory(Request, sizeof *Request);
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RtlZeroMemory(Request, sizeof *Request + ExtraSize);
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Request->Size = (UINT16)(sizeof *Request + ExtraSize);
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Request->Hint = (UINT_PTR)Irp;
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if (0 != FileName)
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