Add internal SELinux policy overrides

In the future, this will likely include an ostree_t domain.  For now,
this is just a few additional allow rules.

Makefile.am

@@ -31,6 +31,10 @@ endif
 
 SUBDIRS += .
 
+if USE_SELINUX
+SUBDIRS += selinux
+endif
+
 if ENABLE_GTK_DOC
 SUBDIRS += doc
 endif

configure.ac

@@ -203,6 +203,7 @@ AC_CONFIG_FILES([
 Makefile
 embedded-dependencies/Makefile
 doc/Makefile
+selinux/Makefile
 src/libostree/ostree-1.pc
 ])
 AC_OUTPUT

packaging/ostree.spec.in

@@ -44,6 +44,19 @@ Requires: %{name} = %{version}-%{release}
 %description devel
 The %{name}-devel package includes the header files for the %{name} library.
 
+%package        selinux
+Summary:        SELinux policy module for %{name}
+Group:          System Environment/Base
+Requires:       %{name} = %{version}-%{release}
+Requires:       policycoreutils, libselinux-utils
+Requires(post): selinux-policy-base, policycoreutils
+Requires(postun): policycoreutils
+BuildRequires:  selinux-policy-devel
+BuildArch:      noarch
+
+%description    selinux
+This package installs and sets up the SELinux policy security module for %{name}.
+
 %prep
 %setup -q -n ostree-%{version}
 
@@ -69,6 +82,14 @@ rm -rf $RPM_BUILD_ROOT
 %preun
 %systemd_preun ostree-remount.service
 
+%post selinux
+semodule -n -i %{_datadir}/selinux/packages/%{name}.pp
+
+%postun selinux
+if [ $1 -eq 0 ]; then
+    semodule -n -r %{name}
+fi
+
 %files
 %doc COPYING README.md
 %{_bindir}/ostree
@@ -91,3 +112,6 @@ rm -rf $RPM_BUILD_ROOT
 %dir %{_datadir}/gtk-doc/html/ostree
 %{_datadir}/gtk-doc/html/ostree
 %{_datadir}/gir-1.0/OSTree-1.0.gir
+
+%files selinux
+%attr(0600,root,root) %{_datadir}/selinux/packages/%{name}.pp

selinux/.gitignore

@@ -0,0 +1,2 @@
+ostree.pp
+tmp

selinux/Makefile.am

@@ -0,0 +1,22 @@
+# Copyright (C) 2014 Colin Walters <walters@verbum.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+ostree.pp: ostree.fc ostree.if ostree.te
+	make -f /usr/share/selinux/devel/Makefile
+
+selinuxpkgdir = $(datadir)/selinux/packages
+selinuxpkg_DATA = ostree.pp

selinux/ostree.fc

@@ -0,0 +1,9 @@
+# Core definitions
+
+/sysroot	-d	gen_context(system_u:object_r:usr_t,s0)
+/ostree		-d	gen_context(system_u:object_r:usr_t,s0)
+/ostree		-l	gen_context(system_u:object_r:usr_t,s0)
+/media		-l	gen_context(system_u:object_r:mnt_t,s0)
+/mnt		-l	gen_context(system_u:object_r:mnt_t,s0)
+/var/roothome	-d	gen_context(system_u:object_r:admin_home_t,s0)
+/var/home	-d	gen_context(system_u:object_r:home_root_t,s0)

selinux/ostree.if

@@ -0,0 +1 @@
+# Empty.

selinux/ostree.te

@@ -0,0 +1,33 @@
+policy_module(ostree, 1.3.0)
+
+require {
+        type init_t;
+        type root_t;
+        type var_log_t;
+        type games_data_t;
+        type var_yp_t;
+        type systemd_tmpfiles_t;
+        type local_login_t;
+        type admin_home_t;
+        type ldconfig_cache_t;
+        type var_t;
+        type var_run_t;
+        class lnk_file { relabelfrom relabelto read getattr };
+        class dir { relabelfrom relabelto create setattr write };
+}
+
+# init_t
+allow init_t admin_home_t:lnk_file { read getattr };
+allow init_t root_t:dir { write };
+
+#============= systemd_tmpfiles_t ==============
+allow systemd_tmpfiles_t games_data_t:dir relabelto;
+allow systemd_tmpfiles_t var_log_t:dir create;
+allow systemd_tmpfiles_t var_run_t:lnk_file { relabelfrom relabelto };
+allow systemd_tmpfiles_t var_t:dir { create relabelfrom relabelto setattr };
+allow systemd_tmpfiles_t var_yp_t:dir relabelto;
+allow systemd_tmpfiles_t ldconfig_cache_t:dir { relabelfrom relabelto setattr };
+allow systemd_tmpfiles_t var_t:dir { relabelfrom relabelto setattr };
+
+#============= local_login_t ==============
+allow local_login_t admin_home_t:lnk_file read;