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Re: [PATCH] hwrng: core - Allow for multiple simultaneous active hwrng devices

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On Tue, 09 Aug 2016, Jason Cooper wrote:
> Perhaps a /dev/hwrng[0-9] per rng?  That would lend itself nicely to a
> sysfs interface for per device quality, rate, and enabled attributes.
> e.g. /sys/class/hw_random/hwrng0/{device/,quality,rate,enabled}

IMHO, this is mightly annoying to use from inside a rngd-like utility in
a race-free, safe way.  It looks to me that ioctl() would be a much
better interface for everything but the "enabled" functionality (which
should be reported to the rngd-like utility as open() on the real device
failing with, e.g., ENXIO, when that source is disabled).

-- 
  Henrique Holschuh

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Re: [PATCH] hwrng: core - Allow for multiple simultaneous active  hwrng devices Herbert Xu <herbert@gondor.apana.org.au> - 2016-08-09 12:00 +0200
  Re: [PATCH] hwrng: core - Allow for multiple simultaneous active  hwrng devices Jason Cooper <jason@lakedaemon.net> - 2016-08-09 19:00 +0200
    Re: [PATCH] hwrng: core - Allow for multiple simultaneous active hwrng devices Keith Packard <keithp@keithp.com> - 2016-08-09 20:00 +0200
      Re: [PATCH] hwrng: core - Allow for multiple simultaneous active  hwrng devices Jason Cooper <jason@lakedaemon.net> - 2016-08-09 20:30 +0200
        Re: [PATCH] hwrng: core - Allow for multiple simultaneous active hwrng devices Keith Packard <keithp@keithp.com> - 2016-08-09 21:10 +0200
    Re: [PATCH] hwrng: core - Allow for multiple simultaneous active  hwrng devices Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2016-08-09 22:20 +0200
      Re: [PATCH] hwrng: core - Allow for multiple simultaneous active hwrng devices Keith Packard <keithp@keithp.com> - 2016-08-10 01:30 +0200

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