NAME    [Toc]    [Back]

     vm_map_inherit -- set fork inheritance flags for a range within a map

SYNOPSIS    [Toc]    [Back]

     #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    [Toc]    [Back]

     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    [Toc]    [Back]

     The function obtains a lock on the map using vm_map_lock(9) for the duration
 of the function.

RETURN VALUES    [Toc]    [Back]

     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    [Toc]    [Back]

     fork(2)

AUTHORS    [Toc]    [Back]

     This man page was written by Bruce M Simpson <[email protected]>.


				 July 19, 2003