linux-kernel - Re: [PATCH v2 1/2] pinctrl: use to octal permissions for debugfs files

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Date:   Wed, 10 Feb 2021 15:12:39 -0800
From:   Joe Perches <joe@...ches.com>
To:     Drew Fustini <drew@...gleboard.org>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Tony Lindgren <tony@...mide.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Jason Kridner <jkridner@...gleboard.org>,
        Robert Nelson <robertcnelson@...gleboard.org>
Subject: Re: [PATCH v2 1/2] pinctrl: use to octal permissions for debugfs
 files

On Wed, 2021-02-10 at 13:21 -0800, Drew Fustini wrote:
> I will change from the incorrect 0400 to 0444.

Thanks.

> As for S_IFREG, it does seem like leaving off S_IFREG is the most common
> case when using octal permissions with debugfs_create_*():
> 
> $ git grep debugfs_create drivers/ |grep 0444 |grep -v S_IFREG | wc -l
> 302
> $ git grep debugfs_create drivers/ |grep 0444 |grep S_IFREG | wc -l
> 9

It's ~2:1 when using S_IRUGO

$ git grep debugfs_create_file drivers/ | grep S_IRUGO | grep -v S_IFREG | wc -l
109
$ git grep debugfs_create_file drivers/ | grep S_IRUGO | grep S_IFREG | wc -l
48