[PATCH v8 11/19] ima: Implement ima_free_policy_rules() for freeing of an ima_namespace
Stefan Berger
stefanb at linux.vnet.ibm.com
Tue Jan 4 17:04:08 UTC 2022
From: Stefan Berger <stefanb at linux.ibm.com>
Implement ima_free_policy_rules() that is needed when an ima_namespace
is freed.
Signed-off-by: Stefan Berger <stefanb at linux.ibm.com>
---
security/integrity/ima/ima.h | 1 +
security/integrity/ima/ima_policy.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
index 0c86a955cedf..1c1e859721ee 100644
--- a/security/integrity/ima/ima.h
+++ b/security/integrity/ima/ima.h
@@ -325,6 +325,7 @@ void ima_update_policy_flags(struct ima_namespace *ns);
ssize_t ima_parse_add_rule(struct ima_namespace *ns, char *rule);
void ima_delete_rules(struct ima_namespace *ns);
int ima_check_policy(struct ima_namespace *ns);
+void ima_free_policy_rules(struct ima_namespace *ns);
void *ima_policy_start(struct seq_file *m, loff_t *pos);
void *ima_policy_next(struct seq_file *m, void *v, loff_t *pos);
void ima_policy_stop(struct seq_file *m, void *v);
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index c265c3b5a9f2..15c68dc5da9e 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -1884,6 +1884,22 @@ void ima_delete_rules(struct ima_namespace *ns)
}
}
+/**
+ * ima_free_policy_rules - free all policy rules
+ * @ns: IMA namespace that has the policy
+ */
+void ima_free_policy_rules(struct ima_namespace *ns)
+{
+ struct ima_rule_entry *entry, *tmp;
+
+ ima_delete_rules(ns);
+
+ list_for_each_entry_safe(entry, tmp, &ns->ima_policy_rules, list) {
+ list_del(&entry->list);
+ ima_free_rule(entry);
+ }
+}
+
#define __ima_hook_stringify(func, str) (#func),
const char *const func_tokens[] = {
--
2.31.1
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