On Jan 13, 2011, Richard Stallman <[email protected]> wrote: >> We compute the hash of "`uname -r`/foobar/blobname.fw", and ask the >> userland hotplug script for %x of that hash number.
>> This does not depend on any session ID. It will only change if you >> install a different version of Linux. > Yeah, this particular variant doesn't. > Other variants, using a kernel-supplied varying hash prefix (which could > be exposed through some file named hashprefix within /sys) could. > What I don't understand is why you entertain the idea of doing so. It > would be like our current approach in that it would be impossible to > put firmware in a file that would load. No, it wouldn't be impossible. A suitable userland hotplug script would be perfectly capable of looking for a local file that satisfies the request. What this would do is make it harder for the hashes to become stable alternate identifiers for the blobs. -- Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/ You must be the change you wish to see in the world. -- Gandhi Be Free! -- http://FSFLA.org/ FSF Latin America board member Free Software Evangelist Red Hat Brazil Compiler Engineer
