linux-kernel - Re: [PATCH] proc_do_large_bitmap - return error on writes to non-existant bitmap

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Message-ID: <CAAXuY3oZSMYd8_f9dDSf_oktnC0oS6yKBJWOmcMi4Jn6C0MkkA@mail.gmail.com>
Date:   Mon, 2 Dec 2019 10:44:03 -0800
From:   Iurii Zaikin <yzaikin@...gle.com>
To:     Maciej Żenczykowski <zenczykowski@...il.com>
Cc:     Maciej Żenczykowski <maze@...gle.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linus FS Devel Mailing List <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH] proc_do_large_bitmap - return error on writes to
 non-existant bitmap

On Wed, Nov 27, 2019 at 1:55 AM Maciej Żenczykowski
<zenczykowski@...il.com> wrote:
> We return ENOMEDIUM 'No medium found', because it's the best error
> I could come up with to describe the situation.
EFAULT for bitmap == NULL and
EINVAL for bitmap_len == 0?