mkioctls

早期freebsd实现

awk '
BEGIN {
	print "#include <sys/param.h>"
	print "#include <sys/socket.h>"
	print "#include <sys/socketvar.h>"
	print "#include <net/route.h>"
	print "#include <net/if.h>"
	print "#include <sys/termios.h>"
	print "#define COMPAT_43"
	print "#include <sys/ioctl.h>"
	print ""
	print "char *"
	print "ioctlname(val)"
	print "{"
	print ""
}

/^#[ 	]*define[ 	]*(TIO|FIO|SIO|OSIO)[A-Z]*[ 	]*_IO/ {
	
	# find where the name starts
	for (i = 1; i <= NF; i++)
		if ($i ~ /define/)
			break;
	++i;
	# 
	printf("\tif (val ==  %s)\n\t\treturn(\"%s\");\n", $i, $i);

}
END {
	print "\n\treturn(NULL);"
	print "}"
}
' /usr/include/sys/ioctl.h /usr/include/sys/ioctl_compat.h