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From: Paul Moore <paul@paul-moore.com>
To: Ondrej Mosnacek <omosnace@redhat.com>
Cc: selinux@vger.kernel.org
Subject: Re: [PATCH] selinux: don't produce incorrect filename_trans_count
Date: Wed, 22 Apr 2020 15:39:43 -0400	[thread overview]
Message-ID: <CAHC9VhR5mz2WdSrqho3mn0V2qY1NosiHtaMQ-ncAbFM2+m9eGw@mail.gmail.com> (raw)
In-Reply-To: <20200420132731.1085015-1-omosnace@redhat.com>

On Mon, Apr 20, 2020 at 9:27 AM Ondrej Mosnacek <omosnace@redhat.com> wrote:
>
> I thought I fixed the counting in filename_trans_read_helper() to count
> the compat rule count correctly in the final version, but it's still
> wrong. To really count the same thing as in the compat path, we'd need
> to add up the cardinalities of stype bitmaps of all datums.
>
> Since the kernel currently doesn't implement an ebitmap_cardinality()
> function (and computing the proper count would just waste CPU cycles
> anyway), just document that we use the field only in case of the old
> format and stop updating it in filename_trans_read_helper().
>
> Fixes: 430059024389 ("selinux: implement new format of filename transitions")
> Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
> ---
>  security/selinux/ss/policydb.c | 11 +++--------
>  security/selinux/ss/policydb.h |  3 ++-
>  2 files changed, 5 insertions(+), 9 deletions(-)

Seems reasonable. Merged into selinux/next.

-- 
paul moore
www.paul-moore.com

      reply	other threads:[~2020-04-22 19:39 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-20 13:27 [PATCH] selinux: don't produce incorrect filename_trans_count Ondrej Mosnacek
2020-04-22 19:39 ` Paul Moore [this message]

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