From: Alex Henrie <alexh@xxxxxxxxxxx>
Requires "ima: add gid support".
Reviewed-by: Petr Vorel <pvorel@xxxxxxx>
Signed-off-by: Alex Henrie <alexh@xxxxxxxxxxx>
[ pvorel: add test_file parameter to ima_check(), add
verify_measurement() (DRY) ]
Signed-off-by: Petr Vorel <pvorel@xxxxxxx>
---
runtest/ima | 1 +
.../integrity/ima/tests/ima_conditionals.sh | 62 +++++++++++++++++++
2 files changed, 63 insertions(+)
create mode 100755 testcases/kernel/security/integrity/ima/tests/ima_conditionals.sh
diff --git a/runtest/ima b/runtest/ima
index 29caa034a..01942eefa 100644
--- a/runtest/ima
+++ b/runtest/ima
@@ -6,4 +6,5 @@ ima_violations ima_violations.sh
ima_keys ima_keys.sh
ima_kexec ima_kexec.sh
ima_selinux ima_selinux.sh
+ima_conditionals ima_conditionals.sh
evm_overlay evm_overlay.sh
diff --git a/testcases/kernel/security/integrity/ima/tests/ima_conditionals.sh b/testcases/kernel/security/integrity/ima/tests/ima_conditionals.sh
new file mode 100755
index 000000000..102d29756
--- /dev/null
+++ b/testcases/kernel/security/integrity/ima/tests/ima_conditionals.sh
@@ -0,0 +1,62 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2021 VPI Technology
+# Copyright (c) 2021 Petr Vorel <pvorel@xxxxxxx>
+# Author: Alex Henrie <alexh@xxxxxxxxxxx>
+#
+# Verify that conditional rules work.
+
+TST_NEEDS_CMDS="chgrp chown id sg sudo"
+TST_CNT=1
+TST_NEEDS_DEVICE=1
+
+. ima_setup.sh
+
+verify_measurement()
+{
+ local request="$1"
+ local user="nobody"
+ local test_file="$PWD/test.txt"
+ local cmd="cat $test_file > /dev/null"
+
+ local value="$(id -u $user)"
+ [ "$request" = 'gid' -o "$request" = 'fgroup' ] && value="$(id -g $user)"
+
+ require_policy_writable
+
+ ROD rm -f $test_file
+
+ tst_res TINFO "verify measuring user files when requested via $request"
+ ROD echo "measure $request=$value" \> $IMA_POLICY
+ ROD echo "$(date) $request test" \> $test_file
+
+ case "$request" in
+ fgroup)
+ chgrp $user $test_file
+ $cmd
+ fowner)
+ chown $user $test_file
+ $cmd
+ ;;
+ gid) sudo sg $user "sh -c '$cmd'";;
+ uid) sudo -n -u $user sh -c "$cmd";;
+ *) tst_brk TBROK "Invalid res type '$1'";;
+ esac
+
+ ima_check $test_file
+}
+
+test1()
+{
+ verify_measurement uid
+ verify_measurement fowner
+
+ if tst_kvcmp -lt 5.16; then
+ tst_brk TCONF "gid and fgroup options require kernel 5.16 or newer"
+ fi
+
+ verify_measurement gid
+ verify_measurement fgroup
+}
+
+tst_run
--
2.33.0
