/[gentoo-x86]/eclass/selinux-policy-2.eclass
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Contents of /eclass/selinux-policy-2.eclass

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Revision 1.18 - (show annotations) (download)
Sun Apr 28 16:15:33 2013 UTC (11 months, 3 weeks ago) by zmedico
Branch: MAIN
Changes since 1.17: +2 -2 lines
Bug #467646 - Refer to /etc/portage/make.conf, not /etc/make.conf.

1 # Copyright 1999-2013 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/selinux-policy-2.eclass,v 1.17 2013/03/09 12:07:50 swift Exp $
4
5 # Eclass for installing SELinux policy, and optionally
6 # reloading the reference-policy based modules.
7
8 # @ECLASS: selinux-policy-2.eclass
9 # @MAINTAINER:
10 # selinux@gentoo.org
11 # @BLURB: This eclass supports the deployment of the various SELinux modules in sec-policy
12 # @DESCRIPTION:
13 # The selinux-policy-2.eclass supports deployment of the various SELinux modules
14 # defined in the sec-policy category. It is responsible for extracting the
15 # specific bits necessary for single-module deployment (instead of full-blown
16 # policy rebuilds) and applying the necessary patches.
17 #
18 # Also, it supports for bundling patches to make the whole thing just a bit more
19 # manageable.
20
21 # @ECLASS-VARIABLE: MODS
22 # @DESCRIPTION:
23 # This variable contains the (upstream) module name for the SELinux module.
24 # This name is only the module name, not the category!
25 : ${MODS:="_illegal"}
26
27 # @ECLASS-VARIABLE: BASEPOL
28 # @DESCRIPTION:
29 # This variable contains the version string of the selinux-base-policy package
30 # that this module build depends on. It is used to patch with the appropriate
31 # patch bundle(s) that are part of selinux-base-policy.
32 : ${BASEPOL:=""}
33
34 # @ECLASS-VARIABLE: POLICY_PATCH
35 # @DESCRIPTION:
36 # This variable contains the additional patch(es) that need to be applied on top
37 # of the patchset already contained within the BASEPOL variable. The variable
38 # can be both a simple string (space-separated) or a bash array.
39 : ${POLICY_PATCH:=""}
40
41 # @ECLASS-VARIABLE: POLICY_FILES
42 # @DESCRIPTION:
43 # When defined, this contains the files (located in the ebuilds' files/
44 # directory) which should be copied as policy module files into the store.
45 # Generally, users would want to include at least a .te and .fc file, but .if
46 # files are supported as well. The variable can be both a simple string
47 # (space-separated) or a bash array.
48 : ${POLICY_FILES:=""}
49
50 # @ECLASS-VARIABLE: POLICY_TYPES
51 # @DESCRIPTION:
52 # This variable informs the eclass for which SELinux policies the module should
53 # be built. Currently, Gentoo supports targeted, strict, mcs and mls.
54 # This variable is the same POLICY_TYPES variable that we tell SELinux
55 # users to set in make.conf. Therefore, it is not the module that should
56 # override it, but the user.
57 : ${POLICY_TYPES:="targeted strict mcs mls"}
58
59 extra_eclass=""
60 case ${BASEPOL} in
61 9999) extra_eclass="git-2";
62 EGIT_REPO_URI="git://git.overlays.gentoo.org/proj/hardened-refpolicy.git";
63 EGIT_SOURCEDIR="${WORKDIR}/refpolicy";;
64 esac
65
66 inherit eutils ${extra_eclass}
67
68 IUSE=""
69
70 HOMEPAGE="http://www.gentoo.org/proj/en/hardened/selinux/"
71 if [[ -n ${BASEPOL} ]] && [[ "${BASEPOL}" != "9999" ]];
72 then
73 SRC_URI="http://oss.tresys.com/files/refpolicy/refpolicy-${PV}.tar.bz2
74 http://dev.gentoo.org/~swift/patches/selinux-base-policy/patchbundle-selinux-base-policy-${BASEPOL}.tar.bz2"
75 elif [[ "${BASEPOL}" != "9999" ]];
76 then
77 SRC_URI="http://oss.tresys.com/files/refpolicy/refpolicy-${PV}.tar.bz2"
78 else
79 SRC_URI=""
80 fi
81
82 LICENSE="GPL-2"
83 SLOT="0"
84 S="${WORKDIR}/"
85 PATCHBUNDLE="${DISTDIR}/patchbundle-selinux-base-policy-${BASEPOL}.tar.bz2"
86
87 # Modules should always depend on at least the first release of the
88 # selinux-base-policy for which they are generated.
89 if [[ -n ${BASEPOL} ]];
90 then
91 RDEPEND=">=sys-apps/policycoreutils-2.0.82
92 >=sec-policy/selinux-base-policy-${BASEPOL}"
93 else
94 RDEPEND=">=sys-apps/policycoreutils-2.0.82
95 >=sec-policy/selinux-base-policy-${PV}"
96 fi
97 DEPEND="${RDEPEND}
98 sys-devel/m4
99 >=sys-apps/checkpolicy-2.0.21"
100
101 SELINUX_EXPF="src_unpack src_compile src_install pkg_postinst pkg_postrm"
102 case "${EAPI:-0}" in
103 2|3|4|5) SELINUX_EXPF+=" src_prepare" ;;
104 *) ;;
105 esac
106
107 EXPORT_FUNCTIONS ${SELINUX_EXPF}
108
109 # @FUNCTION: selinux-policy-2_src_unpack
110 # @DESCRIPTION:
111 # Unpack the policy sources as offered by upstream (refpolicy). In case of EAPI
112 # older than 2, call src_prepare too.
113 selinux-policy-2_src_unpack() {
114 if [[ "${BASEPOL}" != "9999" ]];
115 then
116 unpack ${A}
117 else
118 git-2_src_unpack
119 fi
120
121 # Call src_prepare explicitly for EAPI 0 or 1
122 has "${EAPI:-0}" 0 1 && selinux-policy-2_src_prepare
123 }
124
125 # @FUNCTION: selinux-policy-2_src_prepare
126 # @DESCRIPTION:
127 # Patch the reference policy sources with our set of enhancements. Start with
128 # the base patchbundle referred to by the ebuilds through the BASEPOL variable,
129 # then apply the additional patches as offered by the ebuild.
130 #
131 # Next, extract only those files needed for this particular module (i.e. the .te
132 # and .fc files for the given module in the MODS variable).
133 #
134 # Finally, prepare the build environments for each of the supported SELinux
135 # types (such as targeted or strict), depending on the POLICY_TYPES variable
136 # content.
137 selinux-policy-2_src_prepare() {
138 local modfiles
139 local add_interfaces=0;
140
141 # Create 3rd_party location for user-contributed policies
142 cd "${S}/refpolicy/policy/modules" && mkdir 3rd_party;
143
144 # Patch the sources with the base patchbundle
145 if [[ -n ${BASEPOL} ]] && [[ "${BASEPOL}" != "9999" ]];
146 then
147 cd "${S}"
148 EPATCH_MULTI_MSG="Applying SELinux policy updates ... " \
149 EPATCH_SUFFIX="patch" \
150 EPATCH_SOURCE="${WORKDIR}" \
151 EPATCH_FORCE="yes" \
152 epatch
153 fi
154
155 # Copy additional files to the 3rd_party/ location
156 if [[ "$(declare -p POLICY_FILES 2>/dev/null 2>&1)" == "declare -a"* ]] ||
157 [[ -n ${POLICY_FILES} ]];
158 then
159 add_interfaces=1;
160 cd "${S}/refpolicy/policy/modules"
161 for POLFILE in ${POLICY_FILES[@]};
162 do
163 cp "${FILESDIR}/${POLFILE}" 3rd_party/ || die "Could not copy ${POLFILE} to 3rd_party/ location";
164 done
165 fi
166
167 # Apply the additional patches refered to by the module ebuild.
168 # But first some magic to differentiate between bash arrays and strings
169 if [[ "$(declare -p POLICY_PATCH 2>/dev/null 2>&1)" == "declare -a"* ]] ||
170 [[ -n ${POLICY_PATCH} ]];
171 then
172 cd "${S}/refpolicy/policy/modules"
173 for POLPATCH in ${POLICY_PATCH[@]};
174 do
175 epatch "${POLPATCH}"
176 done
177 fi
178
179 # Collect only those files needed for this particular module
180 for i in ${MODS}; do
181 modfiles="$(find ${S}/refpolicy/policy/modules -iname $i.te) $modfiles"
182 modfiles="$(find ${S}/refpolicy/policy/modules -iname $i.fc) $modfiles"
183 if [ ${add_interfaces} -eq 1 ];
184 then
185 modfiles="$(find ${S}/refpolicy/policy/modules -iname $i.if) $modfiles"
186 fi
187 done
188
189 for i in ${POLICY_TYPES}; do
190 mkdir "${S}"/${i} || die "Failed to create directory ${S}/${i}"
191 cp "${S}"/refpolicy/doc/Makefile.example "${S}"/${i}/Makefile \
192 || die "Failed to copy Makefile.example to ${S}/${i}/Makefile"
193
194 cp ${modfiles} "${S}"/${i} \
195 || die "Failed to copy the module files to ${S}/${i}"
196 done
197 }
198
199 # @FUNCTION: selinux-policy-2_src_compile
200 # @DESCRIPTION:
201 # Build the SELinux policy module (.pp file) for just the selected module, and
202 # this for each SELinux policy mentioned in POLICY_TYPES
203 selinux-policy-2_src_compile() {
204 for i in ${POLICY_TYPES}; do
205 # Parallel builds are broken, so we need to force -j1 here
206 emake -j1 NAME=$i -C "${S}"/${i} || die "${i} compile failed"
207 done
208 }
209
210 # @FUNCTION: selinux-policy-2_src_install
211 # @DESCRIPTION:
212 # Install the built .pp files in the correct subdirectory within
213 # /usr/share/selinux.
214 selinux-policy-2_src_install() {
215 local BASEDIR="/usr/share/selinux"
216
217 for i in ${POLICY_TYPES}; do
218 for j in ${MODS}; do
219 einfo "Installing ${i} ${j} policy package"
220 insinto ${BASEDIR}/${i}
221 doins "${S}"/${i}/${j}.pp || die "Failed to add ${j}.pp to ${i}"
222
223 if [[ "${POLICY_FILES[@]}" == *"${j}.if"* ]];
224 then
225 insinto ${BASEDIR}/${i}/include/3rd_party
226 doins "${S}"/${i}/${j}.if || die "Failed to add ${j}.if to ${i}"
227 fi
228 done
229 done
230 }
231
232 # @FUNCTION: selinux-policy-2_pkg_postinst
233 # @DESCRIPTION:
234 # Install the built .pp files in the SELinux policy stores, effectively
235 # activating the policy on the system.
236 selinux-policy-2_pkg_postinst() {
237 # build up the command in the case of multiple modules
238 local COMMAND
239 for i in ${MODS}; do
240 COMMAND="-i ${i}.pp ${COMMAND}"
241 done
242
243 for i in ${POLICY_TYPES}; do
244 if [ "${i}" == "strict" ] && [ "${MODS}" = "unconfined" ];
245 then
246 einfo "Ignoring loading of unconfined module in strict module store.";
247 continue;
248 fi
249 einfo "Inserting the following modules into the $i module store: ${MODS}"
250
251 cd /usr/share/selinux/${i} || die "Could not enter /usr/share/selinux/${i}"
252 semodule -s ${i} ${COMMAND}
253 if [ $? -ne 0 ];
254 then
255 ewarn "SELinux module load failed. Trying full reload...";
256 if [ "${i}" == "targeted" ];
257 then
258 semodule -s ${i} -b base.pp -i $(ls *.pp | grep -v base.pp);
259 else
260 semodule -s ${i} -b base.pp -i $(ls *.pp | grep -v base.pp | grep -v unconfined.pp);
261 fi
262 if [ $? -ne 0 ];
263 then
264 ewarn "Failed to reload SELinux policies."
265 ewarn ""
266 ewarn "If this is *not* the last SELinux module package being installed,"
267 ewarn "then you can safely ignore this as the reloads will be retried"
268 ewarn "with other, recent modules."
269 ewarn ""
270 ewarn "If it is the last SELinux module package being installed however,"
271 ewarn "then it is advised to look at the error above and take appropriate"
272 ewarn "action since the new SELinux policies are not loaded until the"
273 ewarn "command finished succesfully."
274 ewarn ""
275 ewarn "To reload, run the following command from within /usr/share/selinux/${i}:"
276 ewarn " semodule -b base.pp -i \$(ls *.pp | grep -v base.pp)"
277 ewarn "or"
278 ewarn " semodule -b base.pp -i \$(ls *.pp | grep -v base.pp | grep -v unconfined.pp)"
279 ewarn "depending on if you need the unconfined domain loaded as well or not."
280 else
281 einfo "SELinux modules reloaded succesfully."
282 fi
283 else
284 einfo "SELinux modules loaded succesfully."
285 fi
286 done
287 }
288
289 # @FUNCTION: selinux-policy-2_pkg_postrm
290 # @DESCRIPTION:
291 # Uninstall the module(s) from the SELinux policy stores, effectively
292 # deactivating the policy on the system.
293 selinux-policy-2_pkg_postrm() {
294 # Only if we are not upgrading
295 if [[ "${EAPI}" -lt 4 || -z "${REPLACED_BY_VERSION}" ]];
296 then
297 # build up the command in the case of multiple modules
298 local COMMAND
299 for i in ${MODS}; do
300 COMMAND="-r ${i} ${COMMAND}"
301 done
302
303 for i in ${POLICY_TYPES}; do
304 einfo "Removing the following modules from the $i module store: ${MODS}"
305
306 semodule -s ${i} ${COMMAND}
307 if [ $? -ne 0 ];
308 then
309 ewarn "SELinux module unload failed.";
310 else
311 einfo "SELinux modules unloaded succesfully."
312 fi
313 done
314 fi
315 }

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