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Date: Mon, 13 Feb 2017 16:34:35 +1100 (AEDT)
From: James Morris <jmorris@...ei.org>
To: linux-security-module@...r.kernel.org
cc: kernel-hardening@...ts.openwall.com, Mimi Zohar <zohar@...ux.vnet.ibm.com>
Subject: [RFC PATCH 3/4] integrity: mark default IMA rules as
__ro_after_init
The default IMA rules are loaded during init and then do not
change, so mark them as __ro_after_init.
Signed-off-by: James Morris <james.l.morris@...cle.com>
---
security/integrity/ima/ima_policy.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index aed47b7..e8498a3 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -83,7 +83,7 @@ struct ima_rule_entry {
* normal users can easily run the machine out of memory simply building
* and running executables.
*/
-static struct ima_rule_entry dont_measure_rules[] = {
+static struct ima_rule_entry dont_measure_rules[] __ro_after_init = {
{.action = DONT_MEASURE, .fsmagic = PROC_SUPER_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_MEASURE, .fsmagic = SYSFS_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_MEASURE, .fsmagic = DEBUGFS_MAGIC, .flags = IMA_FSMAGIC},
@@ -97,7 +97,7 @@ struct ima_rule_entry {
{.action = DONT_MEASURE, .fsmagic = NSFS_MAGIC, .flags = IMA_FSMAGIC}
};
-static struct ima_rule_entry original_measurement_rules[] = {
+static struct ima_rule_entry original_measurement_rules[] __ro_after_init = {
{.action = MEASURE, .func = MMAP_CHECK, .mask = MAY_EXEC,
.flags = IMA_FUNC | IMA_MASK},
{.action = MEASURE, .func = BPRM_CHECK, .mask = MAY_EXEC,
@@ -108,7 +108,7 @@ struct ima_rule_entry {
{.action = MEASURE, .func = FIRMWARE_CHECK, .flags = IMA_FUNC},
};
-static struct ima_rule_entry default_measurement_rules[] = {
+static struct ima_rule_entry default_measurement_rules[] __ro_after_init = {
{.action = MEASURE, .func = MMAP_CHECK, .mask = MAY_EXEC,
.flags = IMA_FUNC | IMA_MASK},
{.action = MEASURE, .func = BPRM_CHECK, .mask = MAY_EXEC,
@@ -122,7 +122,7 @@ struct ima_rule_entry {
{.action = MEASURE, .func = POLICY_CHECK, .flags = IMA_FUNC},
};
-static struct ima_rule_entry default_appraise_rules[] = {
+static struct ima_rule_entry default_appraise_rules[] __ro_after_init = {
{.action = DONT_APPRAISE, .fsmagic = PROC_SUPER_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_APPRAISE, .fsmagic = SYSFS_MAGIC, .flags = IMA_FSMAGIC},
{.action = DONT_APPRAISE, .fsmagic = DEBUGFS_MAGIC, .flags = IMA_FSMAGIC},
--
1.7.1
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