Undocumented functions of NTDLL

2OO1, 1O February



NtCreateSemaphore
NtCreateSemaphore

NTSYSAPI 
NTSTATUS
NTAPI

NtCreateSemaphore(


  OUT PHANDLE             SemaphoreHandle,
  IN ACCESS_MASK          DesiredAccess,
  IN POBJECT_ATTRIBUTES   ObjectAttributes OPTIONAL,
  IN ULONG                InitialCount,
  IN ULONG                MaximumCount );



Function NtCreateSemaphore creates Semaphore Object with or without name in Object Namespace, and sets initial and maximum releases number.


  • SemaphoreHandle
    •     Result of call - pointer to HANDLE to Semaphore Object.
  • DesiredAccess
    •     Access rights to Semaphore Object. Can be one of:
  • ObjectAttributes
    •     Optional pointer to OBJECT_ATTRIBUTES structure containing semaphore's name.
  • InitialCount
    •     Initial state of semaphore. Typically the same as MaximumCount.
  • MaximumCount
    •     Maximum releases number.


    Documented by:
    Tomasz Nowak



    Requirements:
    Library: ntdll.lib


    See also:
    NtOpenSemaphore
    NtQuerySemaphore