On 07/23/2018 02:13 PM, James Bottomley wrote: > The current patch does, you even provided a use case in your last email > (it's do command to get sizing followed by do command with correctly > sized buffer). The example I provided was: #1 send a command, #2 read the response header (10 bytes), get the actual response size from the header and then #3 read the full response (response size - size of the header bytes). > > However, if you tie it to O_NONBLOCK, it won't because no-one currently > opens the TPM device non blocking so it's an ABI conformant > discriminator of the uses. Tying to O_NONBLOCK should be simple > because it's in file->f_flags. I think that it might be an option. Especially that I have this on top of the async patch. Let's discuss this when Jarkko is back. Thanks, -- Tadeusz
