vm_map_inherit(9)

NAME

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
vm_map_inherit(vm_map_t  map, vm_offset_t start, vm_offset_t
end,
        vm_inherit_t new_inheritance);

DESCRIPTION

The vm_map_inherit() function sets the inheritance flags for

the range
start to end within the target map to the value

new_inheritance.

The new_inheritance flag must have one of the values VM_IN

HERIT_NONE,
VM_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 map us

ing
vm_map_lock(9) 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.

SEE ALSO

fork(2)

AUTHORS

This manual page was written by Bruce M Simpson

<bms@spc.org>.

BSD July 19, 2003

BSD