[tests/selinux] pr775-checkpolicy-revdeps: add new test which covers the ksm service

[Milos Malik <mmalik@redhat.com>]

            A new commit has been pushed.

            Repo   : tests/selinux
            Branch : pr775-checkpolicy-revdeps
            Commit : db10d20932c2ce4ed4de8a48f65cf65661a5b651
            Author : Milos Malik <mmalik@redhat.com>
            Date   : 2022-05-25T20:43:24+02:00
            Stats  : +205/-0 in 4 file(s)
            URL    : https://src.fedoraproject.org/tests/selinux/c/db10d20932c2ce4ed4de8a48f65cf65661a5b651?branch=pr775-checkpolicy-revdeps

            Log:
            add new test which covers the ksm service

The ksm service will be sooner of later confined by SELinux.
Purpose of this automated test is to find out whether the SELinux
policy does not prevent the ksm service from doing what is
expected.

The TC covers BZ#2021131.

---
diff --git a/selinux-policy/ksm-and-similar/Makefile b/selinux-policy/ksm-and-similar/Makefile
new file mode 100644
index 0000000..9ff17b0
--- /dev/null
+++ b/selinux-policy/ksm-and-similar/Makefile
@@ -0,0 +1,68 @@
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Makefile of /CoreOS/selinux-policy/Regression/ksm-and-similar
+#   Description: SELinux interferes with ksm and related programs
+#   Author: Milos Malik <mmalik@redhat.com>
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Copyright (c) 2022 Red Hat, Inc. All rights reserved.
+#
+#   This copyrighted material is made available to anyone wishing
+#   to use, modify, copy, or redistribute it subject to the terms
+#   and conditions of the GNU General Public License version 2.
+#
+#   This program 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 General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public
+#   License along with this program; if not, write to the Free
+#   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+#   Boston, MA 02110-1301, USA.
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+export TEST=/CoreOS/selinux-policy/Regression/ksm-and-similar
+export TESTVERSION=1.0
+
+BUILT_FILES=
+
+FILES=$(METADATA) runtest.sh Makefile PURPOSE
+
+.PHONY: all install download clean
+
+run: $(FILES) build
+	./runtest.sh
+
+build: $(BUILT_FILES)
+	chmod a+x runtest.sh
+	chcon -t bin_t runtest.sh
+
+clean:
+	rm -f *~ $(BUILT_FILES)
+
+include /usr/share/rhts/lib/rhts-make.include
+
+$(METADATA): Makefile
+	@echo "Owner:           Milos Malik <mmalik@redhat.com>" > $(METADATA)
+	@echo "Name:            $(TEST)" >> $(METADATA)
+	@echo "TestVersion:     $(TESTVERSION)" >> $(METADATA)
+	@echo "Path:            $(TEST_DIR)" >> $(METADATA)
+	@echo "Description:     SELinux interferes with ksm and related programs" >> $(METADATA)
+	@echo "Type:            Regression" >> $(METADATA)
+	@echo "TestTime:        10m" >> $(METADATA)
+	@echo "RunFor:          selinux-policy" >> $(METADATA)
+	@echo "Requires:        audit libselinux libselinux-utils policycoreutils selinux-policy selinux-policy-targeted setools-console /usr/libexec/ksmctl /usr/sbin/service" >> $(METADATA)
+	@echo "RhtsRequires:    library(selinux-policy/common)" >> $(METADATA)
+	@echo "Environment:     AVC_ERROR=+no_avc_check" >> $(METADATA)
+	@echo "Priority:        Normal" >> $(METADATA)
+	@echo "License:         GPLv2" >> $(METADATA)
+	@echo "Confidential:    no" >> $(METADATA)
+	@echo "Destructive:     no" >> $(METADATA)
+	@echo "Releases:        -RHEL4 -RHEL5 -RHEL6 -RHEL7" >> $(METADATA)
+	@echo "Bug:             2021131" >> $(METADATA) # RHEL-9
+
+	rhts-lint $(METADATA)
+

diff --git a/selinux-policy/ksm-and-similar/PURPOSE b/selinux-policy/ksm-and-similar/PURPOSE
new file mode 100644
index 0000000..1f11e4b
--- /dev/null
+++ b/selinux-policy/ksm-and-similar/PURPOSE
@@ -0,0 +1,5 @@
+PURPOSE of /CoreOS/selinux-policy/Regression/ksm-and-similar
+Author: Milos Malik <mmalik@redhat.com>
+
+SELinux interferes with the ksm service (the ksmctl program) and related programs.
+

diff --git a/selinux-policy/ksm-and-similar/main.fmf b/selinux-policy/ksm-and-similar/main.fmf
new file mode 100644
index 0000000..ebab863
--- /dev/null
+++ b/selinux-policy/ksm-and-similar/main.fmf
@@ -0,0 +1,37 @@
+summary: SELinux interferes with ksm and related programs
+description: |+
+    SELinux interferes with ksm and related programs.
+
+contact: Milos Malik <mmalik@redhat.com>
+component:
+  - selinux-policy
+require:
+  - library(selinux-policy/common)
+recommend:
+  - audit
+  - libselinux
+  - libselinux-utils
+  - policycoreutils
+  - selinux-policy
+  - selinux-policy-targeted
+  - setools-console
+  - /usr/libexec/ksmctl
+  - /usr/sbin/service
+environment:
+    AVC_ERROR: +no_avc_check
+duration: 10m
+enabled: true
+tag:
+  - NoRHEL4
+  - NoRHEL5
+  - NoRHEL6
+  - NoRHEL7
+  - targeted
+link:
+  - relates: https://bugzilla.redhat.com/show_bug.cgi?id=2021131
+adjust:
+  - enabled: false
+    when: distro == rhel-4, rhel-5, rhel-6, rhel-7
+    continue: false
+extra-summary: /CoreOS/selinux-policy/Regression/ksm-and-similar
+extra-task: /CoreOS/selinux-policy/Regression/ksm-and-similar

diff --git a/selinux-policy/ksm-and-similar/runtest.sh b/selinux-policy/ksm-and-similar/runtest.sh
new file mode 100755
index 0000000..4e19de9
--- /dev/null
+++ b/selinux-policy/ksm-and-similar/runtest.sh
@@ -0,0 +1,95 @@
+#!/bin/bash
+# vim: dict=/usr/share/beakerlib/dictionary.vim cpt=.,w,b,u,t,i,k
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   runtest.sh of /CoreOS/selinux-policy/Regression/ksm-and-similar
+#   Description: SELinux interferes with ksm and related programs
+#   Author: Milos Malik <mmalik@redhat.com>
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Copyright (c) 2022 Red Hat, Inc. All rights reserved.
+#
+#   This copyrighted material is made available to anyone wishing
+#   to use, modify, copy, or redistribute it subject to the terms
+#   and conditions of the GNU General Public License version 2.
+#
+#   This program 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 General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public
+#   License along with this program; if not, write to the Free
+#   Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+#   Boston, MA 02110-1301, USA.
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+# Include Beaker environment
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+
+PACKAGE="selinux-policy"
+FILE_PATH="/usr/libexec/ksmctl"
+FILE_CONTEXT="ksm_exec_t"
+SERVICE_NAME="ksm"
+PROCESS_NAME="ksmctl"
+PROCESS_CONTEXT="ksm_t"
+
+rlJournalStart
+    if rlIsRHEL 7 ; then
+        rlLog "Not applicable to this OS version."
+        rlJournalEnd
+        exit 0
+    fi
+
+    rlPhaseStartSetup
+        rlRun "rlImport 'selinux-policy/common'"
+        rlSESatisfyRequires
+        rlAssertRpm ${PACKAGE}
+        rlAssertRpm ${PACKAGE}-targeted
+        rlRun "rpm -qf ${FILE_PATH}"
+
+        rlServiceStop ${SERVICE_NAME}
+        rlFileBackup /usr/lib/systemd/system/ksm.service
+
+        rlSESetEnforce
+        rlSEStatus
+        rlSESetTimestamp
+        sleep 2
+    rlPhaseEnd
+
+    if rlSEDefined ${PROCESS_CONTEXT} ; then
+    rlPhaseStartTest "bz#2021131"
+        rlSEMatchPathCon "${FILE_PATH}" "${FILE_CONTEXT}"
+        rlSEMatchPathCon "/sys/kernel/mm/ksm" "sysfs_t"
+        SOURCE_TYPE="init_t" # systemd runs the process
+        rlSESearchRule "allow ${SOURCE_TYPE} ${FILE_CONTEXT} : file { getattr open read execute } $BOOLEANS"
+        rlSESearchRule "allow ${SOURCE_TYPE} ${PROCESS_CONTEXT} : process { transition } $BOOLEANS"
+        rlSESearchRule "type_transition ${SOURCE_TYPE} ${FILE_CONTEXT} : process ${PROCESS_CONTEXT} $BOOLEANS"
+        rlSESearchRule "allow ${PROCESS_CONTEXT} sysfs_t : dir { write } [ ]"
+    rlPhaseEnd
+    fi
+
+    rlPhaseStartTest "real scenario -- standalone service"
+        if ! rlSEDefined ${PROCESS_CONTEXT} ; then
+            PROCESS_CONTEXT="unconfined_service_t"
+        fi
+        rlRun "sed -i 's/^ConditionVirtualization=.*$//' /usr/lib/systemd/system/ksm.service"
+        rlRun "systemctl daemon-reload"
+        rlSEService - ${SERVICE_NAME} - ${PROCESS_CONTEXT} "start status" 1
+        rlRun "restorecon -Rv /etc /run /var" 0-255
+        rlSEService - ${SERVICE_NAME} - ${PROCESS_CONTEXT} "restart status stop status" 1
+    rlPhaseEnd
+
+    rlPhaseStartCleanup
+        sleep 2
+        rlSECheckAVC
+
+        rlFileRestore
+        rlRun "systemctl daemon-reload"
+        rlServiceRestore ${SERVICE_NAME}
+    rlPhaseEnd
+rlJournalPrintText
+rlJournalEnd
+