plucky (9) vm_map_inherit.9freebsd.gz

Provided by: freebsd-manpages_12.2-2_all bug

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_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.


IMPLEMENTATION NOTES
     The vm_map_inherit() function obtains a lock on the map using 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>.