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Wed, 5 Mar 2025 14:54:27 +0000 (GMT) From: Mimi Zohar To: ltp@lists.linux.it Cc: Mimi Zohar , Stefan Berger , Petr Vorel , linux-integrity@vger.kernel.org Subject: [PATCH v3 3/5] ima_violations.sh: additional open-writer violation tests Date: Wed, 5 Mar 2025 09:54:19 -0500 Message-ID: <20250305145421.638857-3-zohar@linux.ibm.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250305145421.638857-1-zohar@linux.ibm.com> References: <20250305145421.638857-1-zohar@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-integrity@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: guUI_ohwhEFLzwUAx0Mjg9khRZB5spg9 X-Proofpoint-ORIG-GUID: guUI_ohwhEFLzwUAx0Mjg9khRZB5spg9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-05_06,2025-03-05_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=984 suspectscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 spamscore=0 mlxscore=0 phishscore=0 clxscore=1015 adultscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2502100000 definitions=main-2503050114 Kernel patch "ima: limit the number of open-writers integrity violations" prevents superfluous "open-writers" violations. Add corresponding LTP tests. Link: https://lore.kernel.org/linux-integrity/20250228205505.476845-2-zohar@linux.ibm.com/ Signed-off-by: Mimi Zohar --- .../integrity/ima/tests/ima_violations.sh | 87 ++++++++++++++++++- 1 file changed, 86 insertions(+), 1 deletion(-) diff --git a/testcases/kernel/security/integrity/ima/tests/ima_violations.sh b/testcases/kernel/security/integrity/ima/tests/ima_violations.sh index 37bf2182b..d3081a4d1 100755 --- a/testcases/kernel/security/integrity/ima/tests/ima_violations.sh +++ b/testcases/kernel/security/integrity/ima/tests/ima_violations.sh @@ -8,7 +8,7 @@ TST_SETUP="setup" TST_CLEANUP="cleanup" -TST_CNT=3 +TST_CNT=6 REQUIRED_BUILTIN_POLICY="tcb" REQUIRED_POLICY_CONTENT='violations.policy' @@ -61,6 +61,17 @@ close_file_write() exec 4>&- } +open_file_write2() +{ + exec 5> $FILE || tst_brk TBROK "exec 5> $FILE failed" + echo 'test writing2' >&5 +} + +close_file_write2() +{ + exec 5>&- +} + get_count() { local search="$1" @@ -162,6 +173,80 @@ test3() tst_sleep 2s } +test4() +{ + tst_res TINFO "verify limiting single open writer violation" + + local search="open_writers" + local count num_violations + + read num_violations < $IMA_VIOLATIONS + count="$(get_count $search)" + + open_file_write + open_file_read + close_file_read + + open_file_read + close_file_read + + close_file_write + + validate "$num_violations" "$count" "$search" 1 +} + +test5() +{ + tst_res TINFO "verify limiting multiple open writers violations" + + local search="open_writers" + local count num_violations + + read num_violations < $IMA_VIOLATIONS + count="$(get_count $search)" + + open_file_write + open_file_read + close_file_read + + open_file_write2 + open_file_read + close_file_read + close_file_write2 + + open_file_read + close_file_read + + close_file_write + + validate "$num_violations" "$count" "$search" 1 +} + +test6() +{ + tst_res TINFO "verify new open writer causes additional violation" + + local search="open_writers" + local count num_violations + + read num_violations < $IMA_VIOLATIONS + count="$(get_count $search)" + + open_file_write + open_file_read + close_file_read + + open_file_read + close_file_read + close_file_write + + open_file_write + open_file_read + close_file_read + close_file_write + validate "$num_violations" "$count" "$search" 2 +} + . ima_setup.sh . daemonlib.sh tst_run -- 2.48.1