linux-kernel - Re: [PATCH v1 4/8] LSM: Maintain a table of LSM attribute data

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Date:   Wed, 26 Oct 2022 08:00:56 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Casey Schaufler <casey@...aufler-ca.com>
Cc:     casey.schaufler@...el.com, paul@...l-moore.com,
        linux-security-module@...r.kernel.org, jmorris@...ei.org,
        keescook@...omium.org, john.johansen@...onical.com,
        penguin-kernel@...ove.sakura.ne.jp, stephen.smalley.work@...il.com,
        linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
        mic@...ikod.net
Subject: Re: [PATCH v1 4/8] LSM: Maintain a table of LSM attribute data

On Tue, Oct 25, 2022 at 11:45:15AM -0700, Casey Schaufler wrote:
> As LSMs are registered add their lsm_id pointers to a table.
> This will be used later for attribute reporting.
> 
> Signed-off-by: Casey Schaufler <casey@...aufler-ca.com>
> ---
>  include/linux/security.h | 17 +++++++++++++++++
>  security/security.c      | 18 ++++++++++++++++++
>  2 files changed, 35 insertions(+)
> 
> diff --git a/include/linux/security.h b/include/linux/security.h
> index ca1b7109c0db..e1678594d983 100644
> --- a/include/linux/security.h
> +++ b/include/linux/security.h
> @@ -138,6 +138,23 @@ enum lockdown_reason {
>  
>  extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1];
>  
> +#define LSMID_ENTRIES ( \
> +	1 + /* capabilities */ \

No #define for capabilities?

> +	(IS_ENABLED(CONFIG_SECURITY_SELINUX) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_SMACK) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_TOMOYO) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_IMA) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_APPARMOR) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_YAMA) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_LOADPIN) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_SAFESETID) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_LOCKDOWN) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_BPF_LSM) ? 1 : 0) + \
> +	(IS_ENABLED(CONFIG_SECURITY_LANDLOCK) ? 1 : 0))
> +
> +extern int lsm_id;

u64?

thanks,

greg k-h