Re: [PATCH 1/3] selinux: Return directly after a failed memory allocation in policydb_index()

[Paul Moore]

On Tue, Apr 4, 2017 at 7:12 AM, SF Markus Elfring
<elfring@xxxxxxxxxxxxxxxxxxxxx> wrote:
> From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> Date: Tue, 4 Apr 2017 10:20:46 +0200
>
> Replace five goto statements (and previous variable assignments) by
> direct returns after a memory allocation failure in this function.
>
> Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
> ---
>  security/selinux/ss/policydb.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)

Merged.

> diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
> index 0080122760ad..87d645d3a39f 100644
> --- a/security/selinux/ss/policydb.c
> +++ b/security/selinux/ss/policydb.c
> @@ -538,34 +538,30 @@ static int policydb_index(struct policydb *p)
>         symtab_hash_eval(p->symtab);
>  #endif
>
> -       rc = -ENOMEM;
>         p->class_val_to_struct = kcalloc(p->p_classes.nprim,
>                                          sizeof(*p->class_val_to_struct),
>                                          GFP_KERNEL);
>         if (!p->class_val_to_struct)
> -               goto out;
> +               return -ENOMEM;
>
> -       rc = -ENOMEM;
>         p->role_val_to_struct = kcalloc(p->p_roles.nprim,
>                                         sizeof(*p->role_val_to_struct),
>                                         GFP_KERNEL);
>         if (!p->role_val_to_struct)
> -               goto out;
> +               return -ENOMEM;
>
> -       rc = -ENOMEM;
>         p->user_val_to_struct = kcalloc(p->p_users.nprim,
>                                         sizeof(*p->user_val_to_struct),
>                                         GFP_KERNEL);
>         if (!p->user_val_to_struct)
> -               goto out;
> +               return -ENOMEM;
>
>         /* Yes, I want the sizeof the pointer, not the structure */
> -       rc = -ENOMEM;
>         p->type_val_to_struct_array = flex_array_alloc(sizeof(struct type_datum *),
>                                                        p->p_types.nprim,
>                                                        GFP_KERNEL | __GFP_ZERO);
>         if (!p->type_val_to_struct_array)
> -               goto out;
> +               return -ENOMEM;
>
>         rc = flex_array_prealloc(p->type_val_to_struct_array, 0,
>                                  p->p_types.nprim, GFP_KERNEL | __GFP_ZERO);
> @@ -577,12 +573,11 @@ static int policydb_index(struct policydb *p)
>                 goto out;
>
>         for (i = 0; i < SYM_NUM; i++) {
> -               rc = -ENOMEM;
>                 p->sym_val_to_name[i] = flex_array_alloc(sizeof(char *),
>                                                          p->symtab[i].nprim,
>                                                          GFP_KERNEL | __GFP_ZERO);
>                 if (!p->sym_val_to_name[i])
> -                       goto out;
> +                       return -ENOMEM;
>
>                 rc = flex_array_prealloc(p->sym_val_to_name[i],
>                                          0, p->symtab[i].nprim,
> --
> 2.12.2
>



-- 
paul moore
www.paul-moore.com