From: serge@hallyn.com (Serge E. Hallyn)
To: linux-security-module@vger.kernel.org
Subject: [PATCH V3 08/10] capabilities: invert logic for clarity
Date: Thu, 24 Aug 2017 11:23:08 -0500 [thread overview]
Message-ID: <20170824162308.GH10515@mail.hallyn.com> (raw)
In-Reply-To: <6c9745800b15f096639297937ea53b0ec60c2183.1503459890.git.rgb@redhat.com>
Quoting Richard Guy Briggs (rgb at redhat.com):
> The way the logic was presented, it was awkward to read and verify. Invert the
> logic using DeMorgan's Law to be more easily able to read and understand.
>
> Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
> ---
> security/commoncap.c | 8 ++++----
> 1 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/security/commoncap.c b/security/commoncap.c
> index ffcaff0..eb2da69 100644
> --- a/security/commoncap.c
> +++ b/security/commoncap.c
> @@ -552,10 +552,10 @@ static inline bool nonroot_raised_pE(struct cred *cred, kuid_t root)
> bool ret = false;
>
> if (cap_grew(effective, ambient, cred) &&
> - (!cap_full(effective, cred) ||
> - !is_eff(root, cred) ||
> - !is_real(root, cred) ||
> - !root_privileged()))
> + !(cap_full(effective, cred) &&
> + is_eff(root, cred) &&
> + is_real(root, cred) &&
> + root_privileged()))
> ret = true;
> return ret;
> }
> --
> 1.7.1
--
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next prev parent reply other threads:[~2017-08-24 16:23 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-23 10:12 [PATCH V3 00/10] capabilities: do not audit log BPRM_FCAPS on set*id Richard Guy Briggs
2017-08-23 10:12 ` [PATCH V3 01/10] capabilities: factor out cap_bprm_set_creds privileged root Richard Guy Briggs
2017-08-24 15:42 ` Serge E. Hallyn
2017-08-25 5:55 ` James Morris
2017-08-25 10:49 ` Richard Guy Briggs
2017-08-23 10:12 ` [PATCH V3 02/10] capabilities: intuitive names for cap gain status Richard Guy Briggs
2017-08-24 16:03 ` Serge E. Hallyn
2017-08-24 16:19 ` Richard Guy Briggs
2017-08-24 16:37 ` Serge E. Hallyn
2017-08-24 19:06 ` Kees Cook
2017-08-24 21:17 ` Paul Moore
2017-08-28 9:19 ` Richard Guy Briggs
2017-08-28 11:08 ` Richard Guy Briggs
2017-09-01 10:18 ` Richard Guy Briggs
2017-09-02 5:37 ` Serge E. Hallyn
2017-09-04 6:57 ` Richard Guy Briggs
2017-09-05 6:45 ` Richard Guy Briggs
2017-08-25 5:56 ` James Morris
2017-08-25 15:08 ` Andy Lutomirski
2017-08-25 18:47 ` Serge E. Hallyn
2017-08-23 10:12 ` [PATCH V3 03/10] capabilities: rename has_cap to has_fcap Richard Guy Briggs
2017-08-24 16:10 ` Serge E. Hallyn
2017-08-25 5:56 ` James Morris
2017-08-23 10:12 ` [PATCH V3 04/10] capabilities: use root_priveleged inline to clarify logic Richard Guy Briggs
2017-08-24 16:14 ` Serge E. Hallyn
2017-08-25 5:58 ` James Morris
2017-08-28 12:03 ` Richard Guy Briggs
2017-08-31 14:49 ` Serge E. Hallyn
2017-08-23 10:12 ` [PATCH V3 05/10] capabilities: use intuitive names for id changes Richard Guy Briggs
2017-08-24 16:17 ` Serge E. Hallyn
2017-08-25 5:59 ` James Morris
2017-08-25 15:06 ` Andy Lutomirski
2017-08-25 18:51 ` Serge E. Hallyn
2017-08-25 19:45 ` Andy Lutomirski
2017-08-25 20:06 ` Serge E. Hallyn
2017-08-28 1:32 ` James Morris
2017-08-28 9:12 ` Richard Guy Briggs
2017-08-28 20:12 ` Andy Lutomirski
2017-08-23 10:12 ` [PATCH V3 06/10] capabilities: move audit log decision to function Richard Guy Briggs
2017-08-24 16:18 ` Serge E. Hallyn
2017-08-25 6:01 ` James Morris
2017-08-23 10:12 ` [PATCH V3 07/10] capabilities: remove a layer of conditional logic Richard Guy Briggs
2017-08-24 16:20 ` Serge E. Hallyn
2017-08-25 5:47 ` James Morris
2017-08-25 15:11 ` Andy Lutomirski
2017-08-25 18:53 ` Serge E. Hallyn
2017-08-23 10:12 ` [PATCH V3 08/10] capabilities: invert logic for clarity Richard Guy Briggs
2017-08-24 16:23 ` Serge E. Hallyn [this message]
2017-08-25 5:47 ` James Morris
2017-08-23 10:13 ` [PATCH V3 09/10] capabilities: fix logic for effective root or real root Richard Guy Briggs
2017-08-24 16:29 ` Serge E. Hallyn
2017-08-24 16:44 ` Richard Guy Briggs
2017-08-24 16:47 ` Serge E. Hallyn
2017-08-25 5:48 ` James Morris
2017-08-23 10:13 ` [PATCH V3 10/10] capabilities: audit log other surprising conditions Richard Guy Briggs
2017-08-24 16:35 ` Serge E. Hallyn
2017-08-25 5:50 ` James Morris
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