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Subject: Re: [PATCH 1/1 v2] grant rpm_t permission to map security_t
To:     "Sugar, David" <dsugar@tresys.com>,
        "selinux-refpolicy@vger.kernel.org" 
        <selinux-refpolicy@vger.kernel.org>
References: <20190709151527.13582-1-dsugar@tresys.com>
From:   Chris PeBenito <pebenito@ieee.org>
Message-ID: <f3985d08-ef43-4487-47aa-e97dfecec175@ieee.org>
Date:   Sat, 13 Jul 2019 14:08:39 -0400
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On 7/9/19 11:15 AM, Sugar, David wrote:
> type=AVC msg=audit(1560944462.698:217): avc:  denied  { map } for pid=1265 comm="rpm" path="/sys/fs/selinux/status" dev="selinuxfs" ino=19 scontext=system_u:system_r:rpm_t:s0 tcontext=system_u:object_r:security_t:s0 tclass=file permissive=1
> 
> v2 - Create new interface to allow mapping security_t and use this interface by rpm_t
> 
> Signed-off-by: Dave Sugar <dsugar@tresys.com>
> ---
>   policy/modules/admin/rpm.te      |  1 +
>   policy/modules/kernel/selinux.if | 20 ++++++++++++++++++++
>   2 files changed, 21 insertions(+)
> 
> diff --git a/policy/modules/admin/rpm.te b/policy/modules/admin/rpm.te
> index 3c5968f9..082052fa 100644
> --- a/policy/modules/admin/rpm.te
> +++ b/policy/modules/admin/rpm.te
> @@ -185,6 +185,7 @@ selinux_compute_access_vector(rpm_t)
>   selinux_compute_create_context(rpm_t)
>   selinux_compute_relabel_context(rpm_t)
>   selinux_compute_user_contexts(rpm_t)
> +selinux_map_security_files(rpm_t)
>   
>   storage_raw_write_fixed_disk(rpm_t)
>   storage_raw_read_fixed_disk(rpm_t)
> diff --git a/policy/modules/kernel/selinux.if b/policy/modules/kernel/selinux.if
> index 6790e5d0..81d8f918 100644
> --- a/policy/modules/kernel/selinux.if
> +++ b/policy/modules/kernel/selinux.if
> @@ -635,6 +635,26 @@ interface(`selinux_compute_user_contexts',`
>   	allow $1 security_t:security compute_user;
>   ')
>   
> +########################################
> +## <summary>
> +##	Allows caller to map secuirty_t files.
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain allowed access.
> +##	</summary>
> +## </param>
> +#
> +
> +interface(`selinux_map_security_files',`
> +	gen_require(`
> +		type security_t;
> +	')
> +
> +	dev_search_sysfs($1)
> +	allow $1 security_t:file map;
> +')
> +
>   ########################################
>   ## <summary>
>   ##	Unconfined access to the SELinux kernel security server.

Merged.

-- 
Chris PeBenito