Subject: Re: [PATCH] Interface to read and write the mount_runtime_t
 directory.
To:     "Sugar, David" <dsugar@tresys.com>,
        "selinux-refpolicy@vger.kernel.org" 
        <selinux-refpolicy@vger.kernel.org>
References: <20190115032018.28662-1-dsugar@tresys.com>
From:   Chris PeBenito <pebenito@ieee.org>
Message-ID: <7830b698-db43-f4da-13b3-a23654d31d8f@ieee.org>
Date:   Wed, 16 Jan 2019 18:06:04 -0500
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On 1/14/19 10:20 PM, Sugar, David wrote:
> I see this denial when mounting media.  I'm running mount_exec_t
> from my domain, not transitioning.
> 
> type=AVC msg=audit(1547086778.470:331): avc:  denied  { read write } for  pid=11172 comm="mount" name="mount" dev="tmpfs" ino=9470 scontext=sysadm_u:sysadm_r:settings_sudo_t:s0-s0:c0.c1023 tcontext=system_u:object_r:mount_runtime_t:s0 tclass=dir permissive=1

Seems like there is a leaked file descriptor.


> Signed-off-by: Dave Sugar <dsugar@tresys.com>
> ---
>   policy/modules/system/mount.if | 18 ++++++++++++++++++
>   1 file changed, 18 insertions(+)
> 
> diff --git a/policy/modules/system/mount.if b/policy/modules/system/mount.if
> index bf9a8bf3..31475bde 100644
> --- a/policy/modules/system/mount.if
> +++ b/policy/modules/system/mount.if
> @@ -220,3 +220,21 @@ interface(`mount_rw_runtime_files',`
>   	rw_files_pattern($1, mount_runtime_t, mount_runtime_t)
>   ')
>   
> +########################################
> +## <summary>
> +##	Read and write mount runtime directory
> +## </summary>
> +## <param name="domain">
> +##	<summary>
> +##	Domain allowed access.
> +##	</summary>
> +## </param>
> +#
> +interface(`mount_rw_runtime_dir',`
> +	gen_require(`
> +		type mount_runtime_t;
> +	')
> +
> +	allow $1 mount_runtime_t:dir rw_dir_perms;
> +')
> +
> 


-- 
Chris PeBenito