linux-kernel - Re: [PATCH 03/46] selinux: Improve size determinations in four functions

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Message-ID: <CAHC9VhTH2OViD2+az0g9_w4x9c7hY0pxTT4B9qZrk8P0yv8-jw@mail.gmail.com>
Date:   Thu, 23 Mar 2017 16:30:01 -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 03/46] selinux: Improve size determinations in four functions

On Sun, Jan 15, 2017 at 10:00 AM, SF Markus Elfring
<elfring@...rs.sourceforge.net> wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sat, 14 Jan 2017 11:22:12 +0100
>
> Replace the specification of data structures by pointer dereferences
> as the parameter for the operator "sizeof" to make the corresponding size
> determination a bit safer.
>
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  security/selinux/ss/conditional.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Merged, thanks.

> diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c
> index 4a3bf29f7565..771c96afe1d5 100644
> --- a/security/selinux/ss/conditional.c
> +++ b/security/selinux/ss/conditional.c
> @@ -227,7 +227,7 @@ int cond_read_bool(struct policydb *p, struct hashtab *h, void *fp)
>         u32 len;
>         int rc;
>
> -       booldatum = kzalloc(sizeof(struct cond_bool_datum), GFP_KERNEL);
> +       booldatum = kzalloc(sizeof(*booldatum), GFP_KERNEL);
>         if (!booldatum)
>                 return -ENOMEM;
>
> @@ -332,7 +332,7 @@ static int cond_insertf(struct avtab *a, struct avtab_key *k, struct avtab_datum
>                 goto err;
>         }
>
> -       list = kzalloc(sizeof(struct cond_av_list), GFP_KERNEL);
> +       list = kzalloc(sizeof(*list), GFP_KERNEL);
>         if (!list) {
>                 rc = -ENOMEM;
>                 goto err;
> @@ -421,7 +421,7 @@ static int cond_read_node(struct policydb *p, struct cond_node *node, void *fp)
>                         goto err;
>
>                 rc = -ENOMEM;
> -               expr = kzalloc(sizeof(struct cond_expr), GFP_KERNEL);
> +               expr = kzalloc(sizeof(*expr), GFP_KERNEL);
>                 if (!expr)
>                         goto err;
>
> @@ -472,7 +472,7 @@ int cond_read_list(struct policydb *p, void *fp)
>
>         for (i = 0; i < len; i++) {
>                 rc = -ENOMEM;
> -               node = kzalloc(sizeof(struct cond_node), GFP_KERNEL);
> +               node = kzalloc(sizeof(*node), GFP_KERNEL);
>                 if (!node)
>                         goto err;
>
> --
> 2.11.0
>



-- 
paul moore
www.paul-moore.com