mmap2

Almost identical to mmap, but Linux specific
Last argument is specified as multiples of system page size instead of bytes

    my $addr = syscall(&SYS_mmap2, 0, $size,
            &PROT_READ, &MAP_SHARED, fileno F, 0);

    die "$!\n" unless ($addr > 0);
    print "It worked!\n";

Initially it seems to work!

    [mct@ellesmere ~]$ strace -o out ./mmap.pl
    It worked!

continued...