contrib/perl5/h2pl/getioctlsizes


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#!/usr/bin/perl

open (IOCTLS,'/usr/include/sys/ioctl.h') || die "ioctl open failed";

while (<IOCTLS>) {
    if (/^\s*#\s*define\s+\w+\s+_IO(R|W|WR)\('?\w+'?,\s*\w+,\s*([^)]+)/) {
	$need{$2}++;
    } 
}

foreach $key ( sort keys %need ) {
    print $key,"\n";
}