Passing arguments to initrd's 'init' script.

Is it possible to pass arguments from the kernel (boot) command line to the 'init' script located in my initrd? If so, is there a best-practice method for doing this? Looking at the non-initrd system init script '/etc/event.d/rcS', I see that it just reads '/proc/cmdline' and looks for relevent tokens: {{{ for t in $(cat /proc/cmdline); do case $t in -s|single|S|s) runlevel="S" ;; [1-9]) runlevel="$t" ;; esac done }}} I assume that the initrd's 'init' script has access to this same information, at least after it mounts '/proc'. Is there some reason not to use this from the initrd, or is it acceptable? This is related to a larger question I have about 'mkinitrd' and the 'init' script: Why does 'mkinitrd' hard-code the name of the LVM root device, among other things, instead of reading it from the 'root=' parameter on the boot command line? Wouldn't it make more sense to dynamically pick up the root device on each boot, using a method similar to the 'rcS' script, above? -Ryan