[refpolicy] [PATCH 16/20] mount: sets kernel thread priority mount: mount reads /lib/modules/3.10-2-amd64/modules.dep mount: mount lists all mount points

[dominick.grift@gmail.com (Dominick Grift)]

On Fri, 2013-09-27 at 16:55 -0400, Christopher J. PeBenito wrote:
> On Tue 24 Sep 2013 09:40:14 AM EDT, Dominick Grift wrote:
> > In debian mount was trying to list / on a tmpfs (/run/lock). Since
> > var_lock_t is a mountpoint type, and so is mnt_t, i decided to implement
> > a files_list_all_mountpoints() and call that for mount because it makes
> > sense
> >
> > Signed-off-by: Dominick Grift <dominick.grift@gmail.com>
> > ---
> >  policy/modules/kernel/files.if | 18 ++++++++++++++++++
> >  policy/modules/system/mount.te |  7 ++++++-
> >  2 files changed, 24 insertions(+), 1 deletion(-)
> >
> > diff --git a/policy/modules/kernel/files.if b/policy/modules/kernel/files.if
> > index 64ff4d7..f962f76 100644
> > --- a/policy/modules/kernel/files.if
> > +++ b/policy/modules/kernel/files.if
> > @@ -1655,6 +1655,24 @@ interface(`files_dontaudit_search_all_mountpoints',`
> >
> >  ########################################
> >  ## <summary>
> > +##	List all mount points.
> > +## </summary>
> > +## <param name="domain">
> > +##	<summary>
> > +##	Domain allowed access.
> > +##	</summary>
> > +## </param>
> > +#
> > +interface(`files_list_all_mountpoints',`
> > +	gen_require(`
> > +		attribute mountpoint;
> > +	')
> > +
> > +	allow $1 mountpoint:dir list_dir_perms;
> > +')
> > +
> > +########################################
> > +## <summary>
> >  ##	Do not audit listing of all mount points.
> >  ## </summary>
> >  ## <param name="domain">
> > diff --git a/policy/modules/system/mount.te b/policy/modules/system/mount.te
> > index eba28c0..5e5e089 100644
> > --- a/policy/modules/system/mount.te
> > +++ b/policy/modules/system/mount.te
> > @@ -59,6 +59,7 @@ files_pid_filetrans(mount_t, mount_var_run_t, dir, "mount")
> >
> >  kernel_read_system_state(mount_t)
> >  kernel_read_kernel_sysctls(mount_t)
> > +kernel_setsched(mount_t)
> >  kernel_dontaudit_getattr_core_if(mount_t)
> >  kernel_dontaudit_write_debugfs_dirs(mount_t)
> >  kernel_dontaudit_write_proc_dirs(mount_t)
> > @@ -96,7 +97,7 @@ files_unmount_all_file_type_fs(mount_t)
> >  files_read_isid_type_files(mount_t)
> >  # For reading cert files
> >  files_read_usr_files(mount_t)
> > -files_list_mnt(mount_t)
> > +files_list_all_mountpoints(mount_t)
> >  files_dontaudit_write_all_mountpoints(mount_t)
> >  files_dontaudit_setattr_all_mountpoints(mount_t)
> >
> > @@ -202,6 +203,10 @@ optional_policy(`
> >  ')
> >
> >  optional_policy(`
> > +	modutils_read_module_deps(mount_t)
> > +')
> > +
> > +optional_policy(`
> >  	puppet_rw_tmp(mount_t)
> >  ')
> 
> I merged it, though I'm a little dubious that broad of an access is 
> necessary.  The fs_list_auto_mountpoints() call might now be redundant.


Yes that is redundant since autofs_t is also a mountpoint

> 
> 
> --
> Chris PeBenito
> Tresys Technology, LLC
> www.tresys.com | oss.tresys.com