linux-kernel - Re: [PATCH 33/46] selinux: Move an assignment for the variable "rc" in class

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Message-ID: <CAHC9VhT26gqV6wY79TU3ZQyQnKzW-AhNNFUZ2tkGSUaCwEqJeQ@mail.gmail.com>
Date:   Wed, 29 Mar 2017 11:28:41 -0400
From:   Paul Moore <paul@...l-moore.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     linux-security-module@...r.kernel.org, selinux@...ho.nsa.gov,
        Eric Paris <eparis@...isplace.org>,
        James Morris <james.l.morris@...cle.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        William Roberts <william.c.roberts@...el.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 33/46] selinux: Move an assignment for the variable "rc"
 in class_read()

On Sun, Jan 15, 2017 at 10:33 AM, SF Markus Elfring
<elfring@...rs.sourceforge.net> wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sun, 15 Jan 2017 11:10:39 +0100
>
> A local variable was set to an error code in one case before a concrete
> error situation was detected. Thus move the corresponding assignment into
> an if branch to indicate a software failure there.
>
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  security/selinux/ss/policydb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Dropped for reasons already discussed.

> diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
> index 3af2b0849495..9035e5329ceb 100644
> --- a/security/selinux/ss/policydb.c
> +++ b/security/selinux/ss/policydb.c
> @@ -1345,10 +1345,10 @@ static int class_read(struct policydb *p, struct hashtab *h, void *fp)
>                 if (rc)
>                         goto bad;
>
> -               rc = -EINVAL;
>                 cladatum->comdatum = hashtab_search(p->p_commons.table, cladatum->comkey);
>                 if (!cladatum->comdatum) {
>                         printk(KERN_ERR "SELinux:  unknown common %s\n", cladatum->comkey);
> +                       rc = -EINVAL;
>                         goto bad;
>                 }
>         }
> --
> 2.11.0
>



-- 
paul moore
www.paul-moore.com