From: dac.override@gmail.com (Dominick Grift)
Date: Thu, 14 Sep 2017 10:07:44 +0200
Subject: [refpolicy] [PATCH 1/1] Add int_rlimit_inherit interface
In-Reply-To: <1B50C12ACFF4CB42B90D2581155DF50205B5D882@Exchange10.columbia.tresys.com>
References: <1B50C12ACFF4CB42B90D2581155DF50205B5D882@Exchange10.columbia.tresys.com>
Message-ID: <20170914080744.GA17010@julius.enp8s0.d30>
To: refpolicy@oss.tresys.com
List-Id: refpolicy.oss.tresys.com

On Wed, Sep 13, 2017 at 08:34:15PM +0000, David Sugar via refpolicy wrote:
> Create new interface init_rlimit_inherit to allow a process started by init to inherit resource limits.  systemd allows for setting of resource limits [1] but the default from SELinux is to not allow the inheritance of those limits as a service is started.  This interface allows that resource limit inheritance.  
> 
> The systemd .service options are LimitCPU=, LimitFSIZE=, LimitDATA=, LimitSTACK=, LimitCORE=, LimitRSS=, LimitNOFILE=, LimitAS=, LimitNPROC=, LimitMEMLOCK=, LimitLOCKS=, LimitSIGPENDING=, LimitMSGQUEUE=, LimitNICE=, LimitRTPRIO=, LimitRTTIME=
> 
> [1] https://www.freedesktop.org/software/systemd/man/systemd.exec.html

Have you tested this?

I just tried this out and i do not seem to need this to get it to work:

https://www.youtube.com/watch?v=f8nFGbMBG0s

> 
> Signed-off-by: Dave Sugar <dsugar@tresys.com>
> ---
>  policy/modules/system/init.if | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
> 
> diff --git a/policy/modules/system/init.if b/policy/modules/system/init.if
> index 09a20311..bf6e37bc 100644
> --- a/policy/modules/system/init.if
> +++ b/policy/modules/system/init.if
> @@ -712,6 +712,29 @@ interface(`init_getpgid',`
>  
>  ########################################
>  ## <summary>
> +##	Allow process to inherit resource limits.
> +## </summary>
> +## <p>
> +##	This is applicable with systemd when using the
> +##	options to limit resources - see 
> +##  https://www.freedesktop.org/software/systemd/man/systemd.exec.html#LimitMSGQUEUE=
> +## </p>
> +## <param name="domain">
> +##	<summary>
> +##	Domain allowed access.
> +##	</summary>
> +## </param>
> +#
> +interface(`init_rlimit_inherit',`
> +	gen_require(`
> +		type init_t;
> +	')
> +
> +	allow $1 init_t:process rlimitinh;
> +')
> +
> +########################################
> +## <summary>
>  ##	Send init a generic signal.
>  ## </summary>
>  ## <param name="domain">
> -- 
> 2.13.5
> _______________________________________________
> refpolicy mailing list
> refpolicy at oss.tresys.com
> http://oss.tresys.com/mailman/listinfo/refpolicy

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Dominick Grift
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