[PATCH v2 1/3] nvmem: core: make default user binary file root-access only

Russell King - ARM Linux linux at arm.linux.org.uk
Wed Oct 7 04:33:49 PDT 2015

On Wed, Oct 07, 2015 at 12:00:47PM +0100, Srinivas Kandagatla wrote:
> As required by many providers like at24/at25/mxs-ocotp/qfprom and may be
> other providers would want to allow root-only to read the nvmem content.
> So making the defaults to be root-only access would address the request
> and also provide flexibility to providers to specify there own permissions
> on top of the root-only using the perm flag in nvmem_config.
> Making this dynamic did cut down lot of static binary attributes in the
> code.

Check what the lifetime of a struct bin_attribute is before you embed it
into any other structure.  Sorry, but I think you're going to have to
read up on the driver model, sysfs, and kernfs implementations to find
out - I don't know the answer to this without doing the same.

However, this is basic checking that anyone should do when embedding
a structure within another.

FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

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