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Re: [PATCH v1 1/1] sysctl: introduce uuid_le and uuid_be

From Andrew Morton <akpm@linux-foundation.org>
Newsgroups linux.kernel
Subject Re: [PATCH v1 1/1] sysctl: introduce uuid_le and uuid_be
Date 2016-05-24 22:20 +0200
Message-ID <rCqY2-7Zt-23@gated-at.bofh.it> (permalink)
References <rCojv-6cC-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, 24 May 2016 20:27:27 +0300 Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:

> By default the sysctl interface returns random UUID in big endian format.
> Sometimes it's not suitable, e.g. using generated UUID for EFI variable name.
> Provide uuid_le and uuid_be to comprehence that interface.
> 
> ...
>
>  drivers/char/random.c       | 44 +++++++++++++++++++++++++++++++++++++++++
>  include/uapi/linux/sysctl.h |  4 +++-
>  kernel/sysctl_binary.c      | 48 ++++++++++++++++++++++++++++++++++++++++++++

Why does the kernel need to do this?  If userspace wants a random uuid
then it can grab a random number and cook up the UUID itself.

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Thread

[PATCH v1 1/1] sysctl: introduce uuid_le and uuid_be Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-05-24 19:30 +0200
  Re: [PATCH v1 1/1] sysctl: introduce uuid_le and uuid_be Andrew Morton <akpm@linux-foundation.org> - 2016-05-24 22:20 +0200
    Re: [PATCH v1 1/1] sysctl: introduce uuid_le and uuid_be Andy Shevchenko <andriy.shevchenko@linux.intel.com> - 2016-05-24 22:30 +0200
      Re: [PATCH v1 1/1] sysctl: introduce uuid_le and uuid_be Theodore Ts'o <tytso@mit.edu> - 2016-05-26 02:50 +0200

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