vm_map_inherit
- set fork inheritance flags for a range within a map
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h> 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
DESCRIPTION
The
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_NONEVM_INHERIT_COPY
or
VM_INHERIT_SHARE
This affects how the map will be shared with child maps when the
associated process forks.
IMPLEMENTATION NOTES
The
vm_map_inherit ();
function obtains a lock on the
Fa map
using
vm_map_lock9
for the duration of the function.
RETURN VALUES
The
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.
