On Mon, Aug 13, 2018 at 4:12 PM Janne Blomqvist <blomqvist.ja...@gmail.com> wrote: > > On Mon, Aug 13, 2018 at 5:36 PM, Fritz Reese <fritzore...@gmail.com> wrote: >> >> On Fri, Aug 3, 2018 at 9:19 AM Janne Blomqvist >> <blomqvist.ja...@gmail.com> wrote: >> > >> > The getentropy function, found on Linux, OpenBSD, and recently also >> > FreeBSD, can be used to get random bytes to initialize the PRNG. It >> > is similar to the traditional way of reading from /dev/urandom, but >> > being a system call rather than a special file, it doesn't suffer from >> > problems like running out of file descriptors, or failure when running >> > in a container where /dev/urandom is not available. >> > >> > Regtested on x86_64-pc-linux-gnu, Ok for trunk? >> >> Actually, getentropy() is similar to reading from /dev/random, where >> getrandom() is similar to reading from /dev/urandom. > > > No, getentropy is similar to getrandom with the flags argument == 0. Which is > similar to reading /dev/urandom, except that just after boot if enough > entropy hasn't yet been gathered, it may block instead of returning some > not-quite-random data. But once it has been initialized, it will never block > again. > > I agree that reading from /dev/random is overkill, but this patch isn't doing > the equivalent of that. >
Fair enough, I misread the documentation on getentropy(). Then I concur with Jakub, patch looks OK. Fritz
