osfmk/man/MO_data_initialize.html
Server Interface - Request that the default pager record initialization information for specified memory object.
**kern\_return\_t memory\_object\_data\_initialize**** (memory\_object\_t **memory\_object,** memory\_object\_control\_t **memory\_control,** vm\_offset\_t **offset,** pointer\_t **data** ); ****kern\_return\_t seqnos\_memory\_object\_data\_initialize**** (memory\_object\_t **memory\_object,** mach\_port\_seqno\_t **seqno,** memory\_object\_control\_t **memory\_control,** vm\_offset\_t **offset,** pointer\_t **data** );**
memory_object[in abstract-memory-object (receive) right] The abstract memory object port that represents the memory object data, as supplied by the kernel in a memory_object_create call.
seqno[in scalar] The sequence number of this message relative to the abstract memory object port.
memory_control[in memory-cache-control send right] The memory cache control port to be used for a response by the memory manager. If the memory object has been supplied to more than one kernel, this parameter identifies the kernel that is making the call.
offset[in scalar] The offset within the memory object.
data[in pointer to dynamic array of bytes] The data that has been modified while cached in physical memory.
A memory_object_data_initialize function is called as the result of a kernel message providing the default memory manager with initial data for a kernel-created memory object. If the memory manager already has supplied data (by a previous memory_object_data_initialize or memory_object_data_return ), it should ignore this call. Otherwise, the call behaves the same as the memory_object_data_return call.
The kernel makes this call only to the default memory manager and only on temporary memory objects that it has created with memory_object_create.
Only generic errors apply.
Functions: memory_object_create, memory_object_data_return, memory_object_default_server, seqnos_memory_object_default_server.