linux-kernel - RE: [GIT PULL] hash addresses printed with %p

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Message-ID: <d455baafa3d44669a774c7d555c01416@AcuMS.aculab.com>
Date:   Mon, 4 Dec 2017 12:51:13 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Ard Biesheuvel' <ard.biesheuvel@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     Dave Young <dyoung@...hat.com>,
        Matt Fleming <matt@...eblueprint.co.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "Tobin C. Harding" <me@...in.cc>,
        LKML <linux-kernel@...r.kernel.org>,
        "linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>
Subject: RE: [GIT PULL] hash addresses printed with %p

From: Ard Biesheuvel
> Sent: 04 December 2017 10:03
...
> and uses __ATTR_RO() to emit initializers for it. __ATTR() initializes
> the .store member as well, which does not exists, and so it cannot be
> used directly.
> 
> So we should either add a .store member that is always NULL, or we
> should add our own
> 
> #define __ATTR_0400(_name) { \
> .attr = { .name = __stringify(_name), .mode = 0400 }, \
> .show = _name##_show, \
> }

What about an __ATTR_RO_MODE(name, mode) that doesn't set the .store member.
Even if the mode allowed write, writes wouldn't happen.

	David