Re: [Xen-devel] [PATCH] flask: add gcov_op check

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Thu, Oct 13, 2016 at 03:37:13PM +0100, Wei Liu wrote:
> Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> ---
> Cc: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> ---
>  tools/flask/policy/modules/dom0.te  | 2 +-
>  xen/xsm/flask/hooks.c               | 3 +++
>  xen/xsm/flask/policy/access_vectors | 2 ++
>  3 files changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/flask/policy/modules/dom0.te 
> b/tools/flask/policy/modules/dom0.te
> index 2d982d9..54c3572 100644
> --- a/tools/flask/policy/modules/dom0.te
> +++ b/tools/flask/policy/modules/dom0.te
> @@ -15,7 +15,7 @@ allow dom0_t xen_t:xen {
>  };
>  allow dom0_t xen_t:xen2 {
>       resource_op psr_cmt_op psr_cat_op pmu_ctrl get_symbol
> -     get_cpu_levelling_caps get_cpu_featureset livepatch_op
> +     get_cpu_levelling_caps get_cpu_featureset livepatch_op gcov_op
>  };
>  
>  # Allow dom0 to use all XENVER_ subops that have checks.
> diff --git a/xen/xsm/flask/hooks.c b/xen/xsm/flask/hooks.c
> index 177c11f..040a251 100644
> --- a/xen/xsm/flask/hooks.c
> +++ b/xen/xsm/flask/hooks.c
> @@ -822,6 +822,9 @@ static int flask_sysctl(int cmd)
>      case XEN_SYSCTL_livepatch_op:
>          return avc_current_has_perm(SECINITSID_XEN, SECCLASS_XEN2,
>                                      XEN2__LIVEPATCH_OP, NULL);
> +    case XEN_SYSCTL_gcov_op:
> +        return avc_current_has_perm(SECINITSID_XEN, SECCLASS_XEN2,
> +                                    XEN2__GCOV_OP, NULL);
>  
>      default:
>          return avc_unknown_permission("sysctl", cmd);
> diff --git a/xen/xsm/flask/policy/access_vectors 
> b/xen/xsm/flask/policy/access_vectors
> index 49c9a9e..92e6da9 100644
> --- a/xen/xsm/flask/policy/access_vectors
> +++ b/xen/xsm/flask/policy/access_vectors
> @@ -99,6 +99,8 @@ class xen2
>      get_cpu_featureset
>  # XEN_SYSCTL_livepatch_op
>      livepatch_op
> +# XEN_SYSCTL_gcov_op
> +    gcov_op
>  }
>  
>  # Classes domain and domain2 consist of operations that a domain performs on
> -- 
> 2.1.4
> 

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