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[FORMATTING] - Fix formatting in IoCreateFile
svn path=/trunk/; revision=22868
This commit is contained in:
Alex Ionescu
parent
284101e016
commit
54c6ba2513
1 changed files with 188 additions and 297 deletions
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@ -795,199 +795,121 @@ IoCheckQuotaBufferValidity(IN PFILE_QUOTA_INFORMATION QuotaBuffer,
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}
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/*
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* NAME EXPORTED
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* IoCreateFile@56
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*
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* DESCRIPTION
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* Either causes a new file or directory to be created, or it
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* opens an existing file, device, directory or volume, giving
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* the caller a handle for the file object. This handle can be
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* used by subsequent calls to manipulate data within the file
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* or the file object's state of attributes.
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*
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* ARGUMENTS
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* FileHandle (OUT)
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* Points to a variable which receives the file handle
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* on return;
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*
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* DesiredAccess
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* Desired access to the file;
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*
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* ObjectAttributes
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* Structure describing the file;
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*
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* IoStatusBlock (OUT)
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* Receives information about the operation on return;
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*
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* AllocationSize [OPTIONAL]
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* Initial size of the file in bytes;
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*
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* FileAttributes
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* Attributes to create the file with;
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*
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* ShareAccess
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* Type of shared access the caller would like to the
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* file;
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*
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* CreateDisposition
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* Specifies what to do, depending on whether the
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* file already exists;
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*
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* CreateOptions
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* Options for creating a new file;
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*
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* EaBuffer [OPTIONAL]
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* Undocumented;
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*
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* EaLength
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* Undocumented;
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*
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* CreateFileType
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* Type of file (normal, named pipe, mailslot) to create;
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*
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* ExtraCreateParameters [OPTIONAL]
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* Additional creation data for named pipe and mailsots;
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*
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* Options
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* Undocumented.
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*
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* RETURN VALUE
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* Status
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*
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* NOTE
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* Prototype taken from Bo Branten's ntifs.h v15.
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* Description taken from old NtCreateFile's which is
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* now a wrapper of this call.
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*
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* REVISIONS
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*
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* @implemented
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*/
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NTSTATUS
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STDCALL
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IoCreateFile(OUT PHANDLE FileHandle,
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IN ACCESS_MASK DesiredAccess,
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NTAPI
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IoCreateFile(OUT PHANDLE FileHandle,
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IN ACCESS_MASK DesiredAccess,
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IN POBJECT_ATTRIBUTES ObjectAttributes,
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OUT PIO_STATUS_BLOCK IoStatusBlock,
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IN PLARGE_INTEGER AllocationSize OPTIONAL,
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IN ULONG FileAttributes,
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IN ULONG ShareAccess,
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IN ULONG CreateDisposition,
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IN ULONG CreateOptions,
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IN PVOID EaBuffer OPTIONAL,
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IN ULONG EaLength,
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IN PLARGE_INTEGER AllocationSize OPTIONAL,
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IN ULONG FileAttributes,
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IN ULONG ShareAccess,
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IN ULONG CreateDisposition,
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IN ULONG CreateOptions,
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IN PVOID EaBuffer OPTIONAL,
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IN ULONG EaLength,
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IN CREATE_FILE_TYPE CreateFileType,
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IN PVOID ExtraCreateParameters OPTIONAL,
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IN ULONG Options)
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IN PVOID ExtraCreateParameters OPTIONAL,
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IN ULONG Options)
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{
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PFILE_OBJECT FileObject = NULL;
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//PDEVICE_OBJECT DeviceObject;
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PIRP Irp;
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PEXTENDED_IO_STACK_LOCATION StackLoc;
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IO_SECURITY_CONTEXT SecurityContext;
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KPROCESSOR_MODE AccessMode;
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HANDLE LocalHandle;
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LARGE_INTEGER SafeAllocationSize;
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PVOID SystemEaBuffer = NULL;
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NTSTATUS Status = STATUS_SUCCESS;
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AUX_DATA AuxData;
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ACCESS_STATE AccessState;
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PFILE_OBJECT FileObject = NULL;
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PIRP Irp;
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PEXTENDED_IO_STACK_LOCATION StackLoc;
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IO_SECURITY_CONTEXT SecurityContext;
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KPROCESSOR_MODE AccessMode;
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HANDLE LocalHandle = 0;
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LARGE_INTEGER SafeAllocationSize;
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PVOID SystemEaBuffer = NULL;
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NTSTATUS Status = STATUS_SUCCESS;
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AUX_DATA AuxData;
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ACCESS_STATE AccessState;
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KIRQL OldIrql;
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PKNORMAL_ROUTINE NormalRoutine;
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PVOID NormalContext;
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PAGED_CODE();
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DPRINT("IoCreateFile(FileHandle 0x%p, DesiredAccess %x, "
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"ObjectAttributes 0x%p ObjectAttributes->ObjectName->Buffer %S)\n",
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FileHandle,DesiredAccess,ObjectAttributes,
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ObjectAttributes->ObjectName->Buffer);
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if(Options & IO_NO_PARAMETER_CHECKING)
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{
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AccessMode = KernelMode;
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}
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else
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{
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AccessMode = ExGetPreviousMode();
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}
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ASSERT_IRQL(PASSIVE_LEVEL);
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if(AccessMode != KernelMode)
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{
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_SEH_TRY
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{
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ProbeForWriteHandle(FileHandle);
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ProbeForWrite(IoStatusBlock,
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sizeof(IO_STATUS_BLOCK),
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sizeof(ULONG));
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if (AllocationSize)
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{
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SafeAllocationSize = ProbeForReadLargeInteger(AllocationSize);
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}
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else
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{
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SafeAllocationSize.QuadPart = 0;
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}
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if (IoStatusBlock == NULL || FileHandle == NULL)
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return STATUS_ACCESS_VIOLATION;
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if ((EaBuffer) && (EaLength))
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{
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ProbeForRead(EaBuffer,
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EaLength,
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sizeof(ULONG));
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LocalHandle = 0;
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/* marshal EaBuffer */
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SystemEaBuffer = ExAllocatePool(NonPagedPool, EaLength);
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if(!SystemEaBuffer)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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_SEH_LEAVE;
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}
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if(Options & IO_NO_PARAMETER_CHECKING)
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AccessMode = KernelMode;
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else
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AccessMode = ExGetPreviousMode();
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RtlCopyMemory(SystemEaBuffer, EaBuffer, EaLength);
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}
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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if(AccessMode != KernelMode)
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{
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_SEH_TRY
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{
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ProbeForWriteHandle(FileHandle);
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ProbeForWrite(IoStatusBlock,
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sizeof(IO_STATUS_BLOCK),
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sizeof(ULONG));
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if(AllocationSize != NULL)
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{
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SafeAllocationSize = ProbeForReadLargeInteger(AllocationSize);
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}
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else
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SafeAllocationSize.QuadPart = 0;
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if(!NT_SUCCESS(Status)) return Status;
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}
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else
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{
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if (AllocationSize)
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{
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SafeAllocationSize = *AllocationSize;
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}
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else
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{
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SafeAllocationSize.QuadPart = 0;
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}
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if(EaBuffer != NULL && EaLength > 0)
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{
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ProbeForRead(EaBuffer,
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EaLength,
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sizeof(ULONG));
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if ((EaBuffer) && (EaLength)) SystemEaBuffer = EaBuffer;
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}
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/* marshal EaBuffer */
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SystemEaBuffer = ExAllocatePool(NonPagedPool,
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EaLength);
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if(SystemEaBuffer == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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_SEH_LEAVE;
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}
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if(Options & IO_CHECK_CREATE_PARAMETERS)
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{
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DPRINT1("FIXME: IO_CHECK_CREATE_PARAMETERS not yet supported!\n");
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}
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RtlCopyMemory(SystemEaBuffer,
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EaBuffer,
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EaLength);
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}
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}
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_SEH_HANDLE
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{
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Status = _SEH_GetExceptionCode();
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}
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_SEH_END;
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if(!NT_SUCCESS(Status))
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{
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return Status;
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}
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}
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else
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{
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if(AllocationSize != NULL)
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SafeAllocationSize = *AllocationSize;
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else
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SafeAllocationSize.QuadPart = 0;
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if(EaBuffer != NULL && EaLength > 0)
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{
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SystemEaBuffer = EaBuffer;
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}
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}
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if(Options & IO_CHECK_CREATE_PARAMETERS)
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{
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DPRINT1("FIXME: IO_CHECK_CREATE_PARAMETERS not yet supported!\n");
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}
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RtlMapGenericMask(&DesiredAccess, &IoFileObjectType->TypeInfo.GenericMapping);
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/* First try to open an existing named object */
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Status = ObOpenObjectByName(ObjectAttributes,
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NULL,
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AccessMode,
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NULL,
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DesiredAccess,
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NULL,
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&LocalHandle);
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RtlMapGenericMask(&DesiredAccess, &IoFileObjectType->TypeInfo.GenericMapping);
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/* First try to open an existing named object */
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Status = ObOpenObjectByName(ObjectAttributes,
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NULL,
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AccessMode,
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NULL,
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DesiredAccess,
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NULL,
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&LocalHandle);
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ObReferenceObjectByHandle(LocalHandle,
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DesiredAccess,
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NULL,
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@ -999,10 +921,6 @@ IoCreateFile(OUT PHANDLE FileHandle,
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FileObject->Type = IO_TYPE_FILE;
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FileObject->Size = sizeof(FILE_OBJECT);
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//
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// stop stuff that should be in IopParseDevice
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//
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if (CreateOptions &
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(FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT))
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{
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@ -1034,107 +952,84 @@ IoCreateFile(OUT PHANDLE FileHandle,
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{
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FileObject->Flags |= FO_OPENED_CASE_SENSITIVE;
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}
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/*
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* FIXME: We should get the access state from Ob once this function becomes
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* a parse routine once the Ob is refactored.
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*/
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SeCreateAccessState(&AccessState, &AuxData, FILE_ALL_ACCESS, NULL);
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SecurityContext.SecurityQos = NULL; /* ?? */
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SecurityContext.AccessState = &AccessState;
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SecurityContext.DesiredAccess = DesiredAccess;
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SecurityContext.FullCreateOptions = CreateOptions;
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SeCreateAccessState(&AccessState, &AuxData, FILE_ALL_ACCESS, NULL);
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SecurityContext.SecurityQos = NULL; /* ?? */
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SecurityContext.AccessState = &AccessState;
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SecurityContext.DesiredAccess = DesiredAccess;
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SecurityContext.FullCreateOptions = CreateOptions;
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KeInitializeEvent(&FileObject->Lock, SynchronizationEvent, TRUE);
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KeInitializeEvent(&FileObject->Event, NotificationEvent, FALSE);
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KeInitializeEvent(&FileObject->Lock, SynchronizationEvent, TRUE);
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KeInitializeEvent(&FileObject->Event, NotificationEvent, FALSE);
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DPRINT("FileObject 0x%p\n", FileObject);
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DPRINT("FileObject->DeviceObject 0x%p\n", FileObject->DeviceObject);
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/*
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* Create a new IRP to hand to
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* the FS driver: this may fail
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* due to resource shortage.
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*/
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Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, FALSE);
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if (Irp == NULL)
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{
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ZwClose(LocalHandle);
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return STATUS_UNSUCCESSFUL;
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}
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Irp = IoAllocateIrp(FileObject->DeviceObject->StackSize, FALSE);
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if (!Irp)
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{
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ZwClose(LocalHandle);
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return STATUS_UNSUCCESSFUL;
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}
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/* Now set the IRP data */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = AccessMode;
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Irp->Flags = IRP_CREATE_OPERATION |
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IRP_SYNCHRONOUS_API |
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IRP_DEFER_IO_COMPLETION;
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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Irp->UserEvent = &FileObject->Event;
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Irp->UserIosb = IoStatusBlock;
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Irp->MdlAddress = NULL;
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Irp->PendingReturned = FALSE;
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Irp->UserEvent = NULL;
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Irp->Cancel = FALSE;
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Irp->CancelRoutine = NULL;
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Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
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/* Now set the IRP data */
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Irp->Tail.Overlay.OriginalFileObject = FileObject;
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Irp->RequestorMode = AccessMode;
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Irp->Flags = IRP_CREATE_OPERATION |
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IRP_SYNCHRONOUS_API |
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IRP_DEFER_IO_COMPLETION;
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Irp->Tail.Overlay.Thread = PsGetCurrentThread();
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Irp->UserEvent = &FileObject->Event;
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Irp->UserIosb = IoStatusBlock;
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Irp->MdlAddress = NULL;
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Irp->PendingReturned = FALSE;
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Irp->UserEvent = NULL;
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Irp->Cancel = FALSE;
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Irp->CancelRoutine = NULL;
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Irp->Tail.Overlay.AuxiliaryBuffer = NULL;
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/*
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* Get the stack location for the new
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* IRP and prepare it.
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*/
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StackLoc = (PEXTENDED_IO_STACK_LOCATION)IoGetNextIrpStackLocation(Irp);
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StackLoc->Control = 0;
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StackLoc->FileObject = FileObject;
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StackLoc = (PEXTENDED_IO_STACK_LOCATION)IoGetNextIrpStackLocation(Irp);
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StackLoc->Control = 0;
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StackLoc->FileObject = FileObject;
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switch (CreateFileType)
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{
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default:
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case CreateFileTypeNone:
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StackLoc->MajorFunction = IRP_MJ_CREATE;
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StackLoc->Flags = Options;
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StackLoc->Parameters.Create.EaLength = SystemEaBuffer != NULL ? EaLength : 0;
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StackLoc->Flags |= !(ObjectAttributes->Attributes & OBJ_CASE_INSENSITIVE) ? SL_CASE_SENSITIVE: 0;
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break;
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switch (CreateFileType)
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{
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default:
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case CreateFileTypeNone:
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StackLoc->MajorFunction = IRP_MJ_CREATE;
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StackLoc->Flags = Options;
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StackLoc->Parameters.Create.EaLength = SystemEaBuffer != NULL ? EaLength : 0;
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StackLoc->Flags |= !(ObjectAttributes->Attributes & OBJ_CASE_INSENSITIVE) ? SL_CASE_SENSITIVE: 0;
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break;
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case CreateFileTypeNamedPipe:
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StackLoc->MajorFunction = IRP_MJ_CREATE_NAMED_PIPE;
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StackLoc->Parameters.CreatePipe.Parameters = ExtraCreateParameters;
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break;
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case CreateFileTypeNamedPipe:
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StackLoc->MajorFunction = IRP_MJ_CREATE_NAMED_PIPE;
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StackLoc->Parameters.CreatePipe.Parameters = ExtraCreateParameters;
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break;
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case CreateFileTypeMailslot:
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StackLoc->MajorFunction = IRP_MJ_CREATE_MAILSLOT;
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StackLoc->Parameters.CreateMailslot.Parameters = ExtraCreateParameters;
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break;
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}
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case CreateFileTypeMailslot:
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StackLoc->MajorFunction = IRP_MJ_CREATE_MAILSLOT;
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StackLoc->Parameters.CreateMailslot.Parameters = ExtraCreateParameters;
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break;
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}
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/* Set the common data */
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Irp->Overlay.AllocationSize = SafeAllocationSize;
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Irp->AssociatedIrp.SystemBuffer = SystemEaBuffer;
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StackLoc->Parameters.Create.Options = (CreateDisposition << 24) | (CreateOptions & 0x00FFFFFF);
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StackLoc->Parameters.Create.FileAttributes = FileAttributes;
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StackLoc->Parameters.Create.ShareAccess = ShareAccess;
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StackLoc->Parameters.Create.SecurityContext = &SecurityContext;
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/* Set the common data */
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Irp->Overlay.AllocationSize = SafeAllocationSize;
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Irp->AssociatedIrp.SystemBuffer = SystemEaBuffer;
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StackLoc->Parameters.Create.Options = (CreateDisposition << 24) | (CreateOptions & 0x00FFFFFF);
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StackLoc->Parameters.Create.FileAttributes = FileAttributes;
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StackLoc->Parameters.Create.ShareAccess = ShareAccess;
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StackLoc->Parameters.Create.SecurityContext = &SecurityContext;
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/*
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* Now call the driver and
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* possibly wait if it can
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* not complete the request
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* immediately.
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*/
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Status = IofCallDriver(FileObject->DeviceObject, Irp );
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DPRINT("Status :%x\n", Status);
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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AccessMode,
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FALSE,
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NULL);
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Status = IoStatusBlock->Status;
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}
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else
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{
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Status = IofCallDriver(FileObject->DeviceObject, Irp );
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if (Status == STATUS_PENDING)
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{
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KeWaitForSingleObject(&FileObject->Event,
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Executive,
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AccessMode,
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FALSE,
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NULL);
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Status = IoStatusBlock->Status;
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}
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else
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{
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/* We'll have to complete it ourselves */
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ASSERT(!Irp->PendingReturned);
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KeRaiseIrql(APC_LEVEL, &OldIrql);
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|
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@ -1144,38 +1039,34 @@ IoCreateFile(OUT PHANDLE FileHandle,
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(PVOID*)&FileObject,
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&NormalContext);
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KeLowerIrql(OldIrql);
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}
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if (!NT_SUCCESS(Status))
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{
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DPRINT("Failing create request with status %x\n", Status);
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FileObject->DeviceObject = NULL;
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FileObject->Vpb = NULL;
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ObDereferenceObject(FileObject);
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}
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else
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{
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_SEH_TRY
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{
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*FileHandle = LocalHandle;
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}
|
||||
_SEH_HANDLE
|
||||
{
|
||||
Status = _SEH_GetExceptionCode();
|
||||
}
|
||||
_SEH_END;
|
||||
}
|
||||
}
|
||||
|
||||
/* cleanup EABuffer if captured */
|
||||
if(AccessMode != KernelMode && SystemEaBuffer != NULL)
|
||||
{
|
||||
ExFreePool(SystemEaBuffer);
|
||||
}
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
FileObject->DeviceObject = NULL;
|
||||
FileObject->Vpb = NULL;
|
||||
ObDereferenceObject(FileObject);
|
||||
}
|
||||
else
|
||||
{
|
||||
_SEH_TRY
|
||||
{
|
||||
*FileHandle = LocalHandle;
|
||||
}
|
||||
_SEH_HANDLE
|
||||
{
|
||||
Status = _SEH_GetExceptionCode();
|
||||
}
|
||||
_SEH_END;
|
||||
}
|
||||
|
||||
ASSERT_IRQL(PASSIVE_LEVEL);
|
||||
/* cleanup EABuffer if captured */
|
||||
if (AccessMode != KernelMode && (SystemEaBuffer))
|
||||
{
|
||||
ExFreePool(SystemEaBuffer);
|
||||
}
|
||||
|
||||
DPRINT("Finished IoCreateFile() (*FileHandle) 0x%p\n", (*FileHandle));
|
||||
|
||||
return Status;
|
||||
return Status;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue