MINHERIT(2) BSD System Calls Manual MINHERIT(2)

NAME
     mmiinnhheerriitt - control the inheritance of pages

SYNOPSIS
     ##iinncclluuddee <>
     ##iinncclluuddee <>

     int
     mmiinnhheerriitt(caddrt addr, sizet len, int inherit);

DESCRIPTION
     The mmiinnhheerriitt() system call changes the specified pages to have the inher-
     itance characteristic inherit, which can be set to VMINHERITNONE,
     VMINHERITCOPY, or VMINHERITSHARE.  Not all implementations will guar-
     antee that the inheritance characteristic can be set on a page basis; the
     granularity of changes may be as large as an entire region.

RETURN VALUES
     The mmiinnhheerriitt() function returns the value 0 if successful; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.

EERRRROORRSS
     The mmiinnhheerriitt() system call will fail if:

     [EINVAL]           The virtual address range specified by the addr and
                        len arguments is not valid.

     [EACCES]           The flags specified by the inherit argument were not
                        valid for the pages specified by the addr and len
                        arguments.

SEE ALSO
     madvise(2), mincore(2), mprotect(2), msync(2), munmap(2)

HISTORY     The mmiinnhheerriitt() function first appeared in OpenBSD.

BSD                              June 9, 1993                              BSD