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From: Mimi Zohar <zohar@linux.ibm.com>
To: linux-integrity@vger.kernel.org
Cc: Roberto Sassu <roberto.sassu@huawei.com>,
	Vitaly Chikunov <vt@altlinux.org>,
	Patrick Uiterwijk <puiterwi@redhat.com>,
	Lakshmi Ramasubramanian <nramas@linux.microsoft.com>,
	Mimi Zohar <zohar@linux.ibm.com>
Subject: [RFC PATCH 2/3] ima-evm-utils: tests: verify the last "boot_aggregate" record
Date: Wed, 25 Mar 2020 18:26:16 -0400
Message-ID: <1585175177-20739-3-git-send-email-zohar@linux.ibm.com> (raw)
In-Reply-To: <1585175177-20739-1-git-send-email-zohar@linux.ibm.com>

For each kexec, an additional "boot_aggregate" will appear in the
measurement list, assuming the previous measurement list is carried
across kexec.

Verify that the last "boot_aggregate" record in the IMA measurement list
matches.  The "boot_aggregate" is either the last field (e.g. "ima-ng")
or the second to last field (e.g. "ima-sig") in the measurement list
record.

Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
---
 tests/boot_aggregate.test | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tests/boot_aggregate.test b/tests/boot_aggregate.test
index 307a309433fe..73af423e30a1 100755
--- a/tests/boot_aggregate.test
+++ b/tests/boot_aggregate.test
@@ -98,6 +98,12 @@ display_pcrs() {
 }
 
 # The first entry in the IMA measuremnet list is the "boot_aggregate".
+# For each kexec, an additional "boot_aggregate" will appear in the
+# measurement list, assuming the previous measurement list is carried
+# across the kexec.
+#
+# Verify that the last "boot_aggregate" record in the IMA measurement
+# list matches.
 check() {
 	echo "INFO: Calculating the boot_aggregate (PCRs 0 - 7) for multiple banks"
 	bootaggr=$(evmctl ima_boot_aggregate)
@@ -113,7 +119,7 @@ check() {
 		if [ "$VERBOSE" != "0" ]; then
 			echo "$hash"
 		fi
-		if grep -q "${hash}" "${ASCII_RUNTIME_MEASUREMENTS}"; then
+		if grep -e "boot_aggregate$" -e "boot_aggregate.$" "${ASCII_RUNTIME_MEASUREMENTS}" | tail -n 1 | grep -q "${hash}"; then
 			echo "SUCCESS: boot_aggregate ${hash} found"
 			return $OK
 		fi
-- 
2.7.5


  parent reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-25 22:26 [RFC PATCH 0/3] boot aggregate test Mimi Zohar
2020-03-25 22:26 ` [RFC PATCH 1/3] ima-evm-utils: tests: verify boot_aggregate Mimi Zohar
2020-03-25 22:26 ` Mimi Zohar [this message]
2020-03-25 22:26 ` [RFC PATCH 3/3] ima_evm_utils: tests: color boot_aggregate.test tty output Mimi Zohar

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