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Revision 1.14 - (hide annotations) (download)
Sat Sep 8 18:36:12 2012 UTC (22 months, 3 weeks ago) by swift
Branch: MAIN
Changes since 1.13: +21 -6 lines
Support live SELinux policy builds

1 swift 1.12 # Copyright 1999-2012 Gentoo Foundation
2 pebenito 1.1 # Distributed under the terms of the GNU General Public License v2
3 swift 1.14 # $Header: /var/cvsroot/gentoo-x86/eclass/selinux-policy-2.eclass,v 1.13 2012/07/26 12:53:01 swift Exp $
4 pebenito 1.1
5     # Eclass for installing SELinux policy, and optionally
6 blueness 1.5 # reloading the reference-policy based modules.
7 pebenito 1.1
8 blueness 1.7 # @ECLASS: selinux-policy-2.eclass
9 vapier 1.9 # @MAINTAINER:
10 blueness 1.7 # 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 vapier 1.9 #
18 blueness 1.7 # Also, it supports for bundling patches to make the whole thing just a bit more
19     # manageable.
20    
21     # @ECLASS-VARIABLE: MODS
22 vapier 1.9 # @DESCRIPTION:
23 blueness 1.7 # 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 vapier 1.9 # patch bundle(s) that are part of selinux-base-policy.
32 blueness 1.7 : ${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 swift 1.12 # @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 blueness 1.7 # @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 /etc/make.conf. Therefor, it is not the module that should
56     # override it, but the user.
57     : ${POLICY_TYPES:="targeted strict mcs mls"}
58    
59 swift 1.14 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 pebenito 1.1
68     IUSE=""
69    
70     HOMEPAGE="http://www.gentoo.org/proj/en/hardened/selinux/"
71 swift 1.14 if [[ -n ${BASEPOL} ]] && [[ "${BASEPOL}" != "9999" ]];
72 blueness 1.7 then
73     SRC_URI="http://oss.tresys.com/files/refpolicy/refpolicy-${PV}.tar.bz2
74 swift 1.8 http://dev.gentoo.org/~swift/patches/selinux-base-policy/patchbundle-selinux-base-policy-${BASEPOL}.tar.bz2"
75 swift 1.14 elif [[ "${BASEPOL}" != "9999" ]];
76     then
77     SRC_URI="http://oss.tresys.com/files/refpolicy/refpolicy-${PV}.tar.bz2"
78 blueness 1.7 else
79 swift 1.14 SRC_URI=""
80 blueness 1.7 fi
81 pebenito 1.1
82     LICENSE="GPL-2"
83     SLOT="0"
84     S="${WORKDIR}/"
85 blueness 1.7 PATCHBUNDLE="${DISTDIR}/patchbundle-selinux-base-policy-${BASEPOL}.tar.bz2"
86 pebenito 1.1
87 blueness 1.7 # 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-${PV}"
96     fi
97 pebenito 1.1 DEPEND="${RDEPEND}
98     sys-devel/m4
99 blueness 1.7 >=sys-apps/checkpolicy-2.0.21"
100 pebenito 1.1
101 blueness 1.7 SELINUX_EXPF="src_unpack src_compile src_install pkg_postinst"
102     case "${EAPI:-0}" in
103     2|3|4) SELINUX_EXPF+=" src_prepare" ;;
104     *) ;;
105     esac
106    
107     EXPORT_FUNCTIONS ${SELINUX_EXPF}
108    
109     # @FUNCTION: selinux-policy-2_src_unpack
110     # @DESCRIPTION:
111     # Unpack the policy sources as offered by upstream (refpolicy). In case of EAPI
112     # older than 2, call src_prepare too.
113 pebenito 1.1 selinux-policy-2_src_unpack() {
114 swift 1.14 if [[ "${BASEPOL}" != "9999" ]];
115     then
116     unpack ${A}
117     else
118     git-2_src_unpack
119     fi
120 blueness 1.7
121     # Call src_prepare explicitly for EAPI 0 or 1
122     has "${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 vapier 1.11 #
131 blueness 1.7 # 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 vapier 1.11 #
134 blueness 1.7 # 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 pebenito 1.2 local modfiles
139 swift 1.12 local add_interfaces=0;
140    
141     # Create 3rd_party location for user-contributed policies
142     cd "${S}/refpolicy/policy/modules" && mkdir 3rd_party;
143 pebenito 1.2
144 blueness 1.7 # Patch the sources with the base patchbundle
145 swift 1.14 if [[ -n ${BASEPOL} ]] && [[ "${BASEPOL}" != "9999" ]];
146 blueness 1.7 then
147     cd "${S}"
148 swift 1.10 EPATCH_MULTI_MSG="Applying SELinux policy updates ... " \
149     EPATCH_SUFFIX="patch" \
150     EPATCH_SOURCE="${WORKDIR}" \
151     EPATCH_FORCE="yes" \
152     epatch
153 blueness 1.7 fi
154    
155 swift 1.12 # 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 ${POLFILE} to 3rd_party/ location";
164     done
165     fi
166    
167 blueness 1.7 # Apply the additional patches refered to by the module ebuild.
168     # But first some magic to differentiate between bash arrays and strings
169 swift 1.12 if [[ "$(declare -p POLICY_PATCH 2>/dev/null 2>&1)" == "declare -a"* ]] ||
170     [[ -n ${POLICY_PATCH} ]];
171 blueness 1.7 then
172     cd "${S}/refpolicy/policy/modules"
173 swift 1.12 for POLPATCH in ${POLICY_PATCH[@]};
174 blueness 1.7 do
175     epatch "${POLPATCH}"
176     done
177     fi
178 pebenito 1.1
179 blueness 1.7 # Collect only those files needed for this particular module
180 pebenito 1.1 for i in ${MODS}; do
181 blueness 1.7 modfiles="$(find ${S}/refpolicy/policy/modules -iname $i.te) $modfiles"
182     modfiles="$(find ${S}/refpolicy/policy/modules -iname $i.fc) $modfiles"
183 swift 1.12 if [ ${add_interfaces} -eq 1 ];
184     then
185     modfiles="$(find ${S}/refpolicy/policy/modules -iname $i.if) $modfiles"
186     fi
187 pebenito 1.1 done
188    
189     for i in ${POLICY_TYPES}; do
190 blueness 1.7 mkdir "${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 kaiowas 1.3
194 blueness 1.7 cp ${modfiles} "${S}"/${i} \
195     || die "Failed to copy the module files to ${S}/${i}"
196 pebenito 1.1 done
197     }
198    
199 blueness 1.7 # @FUNCTION: selinux-policy-2_src_compile
200 vapier 1.9 # @DESCRIPTION:
201 blueness 1.7 # Build the SELinux policy module (.pp file) for just the selected module, and
202     # this for each SELinux policy mentioned in POLICY_TYPES
203 pebenito 1.1 selinux-policy-2_src_compile() {
204     for i in ${POLICY_TYPES}; do
205 blueness 1.7 # Parallel builds are broken, so we need to force -j1 here
206     emake -j1 NAME=$i -C "${S}"/${i} || die "${i} compile failed"
207 pebenito 1.1 done
208     }
209    
210 blueness 1.7 # @FUNCTION: selinux-policy-2_src_install
211     # @DESCRIPTION:
212     # Install the built .pp files in the correct subdirectory within
213     # /usr/share/selinux.
214 pebenito 1.1 selinux-policy-2_src_install() {
215 pebenito 1.2 local BASEDIR="/usr/share/selinux"
216 pebenito 1.1
217     for i in ${POLICY_TYPES}; do
218     for j in ${MODS}; do
219 blueness 1.7 einfo "Installing ${i} ${j} policy package"
220 pebenito 1.1 insinto ${BASEDIR}/${i}
221 blueness 1.7 doins "${S}"/${i}/${j}.pp || die "Failed to add ${j}.pp to ${i}"
222 swift 1.12
223     if [[ "${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 pebenito 1.1 done
229     done
230     }
231    
232 blueness 1.7 # @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 pebenito 1.1 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 blueness 1.5 for i in ${POLICY_TYPES}; do
244     einfo "Inserting the following modules into the $i module store: ${MODS}"
245 pebenito 1.1
246 blueness 1.7 cd /usr/share/selinux/${i} || die "Could not enter /usr/share/selinux/${i}"
247 swift 1.12 semodule -s ${i} ${COMMAND}
248     if [ $? -ne 0 ];
249     then
250     ewarn "SELinux module load failed. Trying full reload...";
251     if [ "${i}" == "targeted" ];
252     then
253     semodule -s ${i} -b base.pp -i $(ls *.pp | grep -v base.pp);
254     else
255     semodule -s ${i} -b base.pp -i $(ls *.pp | grep -v base.pp | grep -v unconfined.pp);
256     fi
257     if [ $? -ne 0 ];
258     then
259 swift 1.13 ewarn "Failed to reload SELinux policies."
260     ewarn ""
261     ewarn "If this is *not* the last SELinux module package being installed,"
262     ewarn "then you can safely ignore this as the reloads will be retried"
263     ewarn "with other, recent modules."
264     ewarn ""
265     ewarn "If it is the last SELinux module package being installed however,"
266     ewarn "then it is advised to look at the error above and take appropriate"
267     ewarn "action since the new SELinux policies are not loaded until the"
268     ewarn "command finished succesfully."
269     ewarn ""
270     ewarn "To reload, run the following command from within /usr/share/selinux/${i}:"
271     ewarn " semodule -b base.pp -i \$(ls *.pp | grep -v base.pp)"
272     ewarn "or"
273     ewarn " semodule -b base.pp -i \$(ls *.pp | grep -v base.pp | grep -v unconfined.pp)"
274     ewarn "depending on if you need the unconfined domain loaded as well or not."
275 swift 1.12 else
276     einfo "SELinux modules reloaded succesfully."
277     fi
278     else
279     einfo "SELinux modules loaded succesfully."
280     fi
281 blueness 1.5 done
282 pebenito 1.1 }

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