Undocumented functions of NTDLL

2OO1, 16 January



NtWriteFile
NtWriteFile

NTSYSAPI 
NTSTATUS
NTAPI

NtWriteFile(


  IN HANDLE               FileHandle,
  IN HANDLE               Event OPTIONAL,
  IN PIO_APC_ROUTINE      ApcRoutine OPTIONAL,
  IN PVOID                ApcContext OPTIONAL,
  OUT PIO_STATUS_BLOCK    IoStatusBlock,
  IN PVOID                Buffer,
  IN ULONG                Length,
  IN PLARGE_INTEGER       ByteOffset OPTIONAL,
  IN PULONG               Key OPTIONAL );



(Also descripted in Win 2000 DDK)
  • FileHandle
    •     HANDLE to File Object opened with FILE_WRITE_DATA access.
  • Event
    •     HANDLE to Event Object signaled when write finished.
  • ApcRoutine
    •     User APC routine executed after writing is complete.
  • ApcContext
    •     Parameter to ApcRoutine.
  • IoStatusBlock
    •     IO result of call.
  • Buffer
    •     Buffer with data to write.
  • Length
    •     Length of Buffer, in bytes.
  • ByteOffset
    •     Offset from begining of file, where write starts.
  • Key
    •     - ??? (See NtReadFile).


    Documented by:
    Tomasz Nowak



    Requirements:
    Library: ntdll.lib


    See also:
    NtCreateFile
    NtOpenFile
    NtReadFile