IMA: Add example policy for ima_violations.sh

Link: https://lore.kernel.org/ltp/20250114112915.610297-5-pvorel@suse.cz/
Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Petr Vorel <pvorel@suse.cz>

Author: pevik

testcases/kernel/security/integrity/ima/datafiles/Makefile

@@ -8,6 +8,6 @@ top_srcdir	?= ../../../../../..
 
 include	$(top_srcdir)/include/mk/env_pre.mk
 
-SUBDIRS	:= ima_kexec ima_keys ima_measurements ima_policy ima_selinux
+SUBDIRS	:= ima_kexec ima_keys ima_measurements ima_policy ima_selinux ima_violations
 
 include $(top_srcdir)/include/mk/generic_trunk_target.mk

testcases/kernel/security/integrity/ima/datafiles/ima_violations/Makefile

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) Linux Test Project, 2025
+
+top_srcdir	?= ../../../../../../..
+
+include	$(top_srcdir)/include/mk/env_pre.mk
+
+INSTALL_DIR		:= testcases/data/ima_violations
+INSTALL_TARGETS	:= *.policy
+
+include $(top_srcdir)/include/mk/generic_leaf_target.mk

testcases/kernel/security/integrity/ima/datafiles/ima_violations/violations.policy

@@ -0,0 +1,2 @@
+measure func=FILE_CHECK mask=^MAY_READ euid=0
+measure func=FILE_CHECK mask=^MAY_READ uid=0