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    SubjectRe: Entropy poolsize
    On Tue, Jun 22, 2010 at 7:21 PM, Weedy <weedy2887@gmail.com> wrote:
    > Man I need to remember to hit reply-to-all
    >
    > On Mon, Jun 21, 2010 at 3:56 PM, Randy Dunlap <randy.dunlap@oracle.com> wrote:
    >> On 06/21/10 12:48, Weedy wrote:
    >>> On Mon, Jun 21, 2010 at 11:51 AM, Randy Dunlap <randy.dunlap@oracle.com> wrote:
    >>>> On Mon, 21 Jun 2010 09:58:16 -0400 Weedy wrote:
    >>>>
    >>>>> I know grsecurity has a option for this but I don't want to patch my
    >>>>> kernel with it at this time. I have been poking around random.c but I
    >>>>> can't seem to figure out where .poolsize is assigned it's value and
    >>>>> how to increase it.
    >>>>>
    >>>>> If someone could point it out that would be nice.
    >>>>>
    >>>>> Thank you for your time.
    >>>>> --
    >>>>
    >>>> Do you mean this one in drivers/char/random.c or something else?
    >>>>
    >>>> static int sysctl_poolsize = INPUT_POOL_WORDS * 32;
    >>>>
    >>>> It's a sysctl, so it is tunable.
    >>> It's locked, some kind of security risk many kernels ago. I'll try
    >>> changing that but I thought I tried it once before.
    >>
    >> Ah, it's mode is 0444 (read-only).  Sorry I missed that piece.
    >> Sure, you could change the mode for your own use (rebuild the kernel).
    >
    >  # cat /proc/sys/kernel/random/poolsize
    > 16384
    > cat /proc/sys/kernel/random/entropy_avail
    > 4096
    >
    > I guess there is more to it.
    >

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