linux-kernel - Re: [PATCH] LSM: SafeSetID: Mark safesetid_initialized as _

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Date:   Thu, 10 Jun 2021 06:50:47 -1000
From:   Micah Morton <mortonm@...omium.org>
To:     Austin Kim <austindh.kim@...il.com>
Cc:     James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        linux-security-module <linux-security-module@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        austin.kim@....com
Subject: Re: [PATCH] LSM: SafeSetID: Mark safesetid_initialized as __initdata

Thanks for the patch. Looks right, since that variable is only used in
safesetid_security_init() and safesetid_init_securityfs(), which are
both marked __init. I can merge it to the safesetid-next branch today
and send the patch through my tree during the 5.14 merge window.

On Tue, Jun 8, 2021 at 1:09 PM Austin Kim <austindh.kim@...il.com> wrote:
>
> Mark safesetid_initialized as __initdata since it is only used
> in initialization routine.
>
> Signed-off-by: Austin Kim <austindh.kim@...il.com>
> ---
>  security/safesetid/lsm.c | 2 +-
>  security/safesetid/lsm.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/security/safesetid/lsm.c b/security/safesetid/lsm.c
> index 1079c6d54784..963f4ad9cb66 100644
> --- a/security/safesetid/lsm.c
> +++ b/security/safesetid/lsm.c
> @@ -22,7 +22,7 @@
>  #include "lsm.h"
>
>  /* Flag indicating whether initialization completed */
> -int safesetid_initialized;
> +int safesetid_initialized __initdata;
>
>  struct setid_ruleset __rcu *safesetid_setuid_rules;
>  struct setid_ruleset __rcu *safesetid_setgid_rules;
> diff --git a/security/safesetid/lsm.h b/security/safesetid/lsm.h
> index bde8c43a3767..d346f4849cea 100644
> --- a/security/safesetid/lsm.h
> +++ b/security/safesetid/lsm.h
> @@ -19,7 +19,7 @@
>  #include <linux/hashtable.h>
>
>  /* Flag indicating whether initialization completed */
> -extern int safesetid_initialized;
> +extern int safesetid_initialized __initdata;
>
>  enum sid_policy_type {
>         SIDPOL_DEFAULT, /* source ID is unaffected by policy */
> --
> 2.20.1
>