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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〉.