vm_map_inherit(9) set fork inheritance flags for a range within a map


In sys/param.h In vm/vm.h In vm/vm_map.h Ft int Fo vm_map_inherit Fa vm_map_t map vm_offset_t start vm_offset_t end Fa vm_inherit_t new_inheritance Fc


The Fn vm_map_inherit function sets the inheritance flags for the range Fa start to Fa end within the target Fa map to the value Fa new_inheritance .

The Fa new_inheritance flag must have one of the values VM_INHERIT_NONE VM_INHERIT_COPY or VM_INHERIT_SHARE This affects how the map will be shared with child maps when the associated process forks.


The Fn vm_map_inherit function obtains a lock on the Fa map using vm_map_lock9 for the duration of the function.


The Fn vm_map_inherit function returns KERN_SUCCESS if the inheritance flags could be set. Otherwise, if the provided flags were invalid, KERN_INVALID_ARGUMENT will be returned.


This manual page was written by An Bruce M Simpson Aq [email protected] .