From: pebenito@ieee.org (Chris PeBenito)
Date: Mon, 15 May 2017 18:42:45 -0400
Subject: [refpolicy] [PATCH 4/4] Enable /etc directory protection using
 ProtectSystem
In-Reply-To: <20170514152403.369-5-krzysztof.a.nowicki@gmail.com>
References: <20170514152403.369-1-krzysztof.a.nowicki@gmail.com>
	<20170514152403.369-5-krzysztof.a.nowicki@gmail.com>
Message-ID: <b48cc758-f6aa-7e95-fe61-1862ca770a44@ieee.org>
To: refpolicy@oss.tresys.com
List-Id: refpolicy.oss.tresys.com

On 05/14/2017 11:24 AM, Krzysztof Nowicki via refpolicy wrote:
> From: Krzysztof Nowicki <krissn@op.pl>
>
> Setting this service option to 'full' or 'strict' will also remount the
> /etc directory. Allow this in the policy.
>
> This fixes the systemd-networkd service, but will also positively affect
> any other service using the above hardening option.
> ---
>  policy/modules/kernel/files.if | 19 +++++++++++++++++++
>  policy/modules/system/init.te  |  1 +
>  2 files changed, 20 insertions(+)
>
> diff --git a/policy/modules/kernel/files.if b/policy/modules/kernel/files.if
> index 8a64031..ac5714f 100644
> --- a/policy/modules/kernel/files.if
> +++ b/policy/modules/kernel/files.if
> @@ -2851,6 +2851,25 @@ interface(`files_relabelto_etc_dirs',`
>
>  ########################################
>  ## <summary>
> +##	Mount a filesystem on the
> +##	etc directories.
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain allowed access.
> +##	</summary>
> +## </param>
> +#
> +interface(`files_mounton_etc_dirs',`
> +	gen_require(`
> +		type etc_t;
> +	')
> +
> +	allow $1 etc_t:dir mounton;
> +')
> +
> +########################################
> +## <summary>
>  ##	Read generic files in /etc.
>  ## </summary>
>  ## <desc>
> diff --git a/policy/modules/system/init.te b/policy/modules/system/init.te
> index 061bb29..86795a2 100644
> --- a/policy/modules/system/init.te
> +++ b/policy/modules/system/init.te
> @@ -291,6 +291,7 @@ ifdef(`init_systemd',`
>  	files_search_kernel_modules(init_t)
>  	# for privatetmp functions
>  	files_mounton_tmp(init_t)
> +	files_mounton_etc_dirs(init_t)
>
>  	fs_relabel_cgroup_dirs(init_t)
>  	fs_rw_cgroup_files(init_t)

Merged.

-- 
Chris PeBenito