[PATCH v10 16/27] ima: Implement ima_free_policy_rules() for freeing of an ima_namespace
From: Stefan Berger <stefanb@linux.ibm.com>
Date: 2022-02-01 20:39:45
Also in:
linux-integrity, lkml
Subsystem:
extended verification module (evm), integrity measurement architecture (ima), security subsystem, the rest · Maintainers:
Mimi Zohar, Roberto Sassu, Dmitry Kasatkin, Paul Moore, James Morris, "Serge E. Hallyn", Linus Torvalds
Implement ima_free_policy_rules() that is needed when an ima_namespace is freed. Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> --- v10: - Not calling ima_delete_rules() anymore - Move access check from ima_delete_rules into very last patch v9: - Only reset temp_ima_appraise when using init_ima_ns. --- security/integrity/ima/ima.h | 1 + security/integrity/ima/ima_policy.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+)
diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
index aea8fb8d2854..8c757223d549 100644
--- a/security/integrity/ima/ima.h
+++ b/security/integrity/ima/ima.h@@ -329,6 +329,7 @@ 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 2dcc5a8c585a..fe3dce8fb939 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c@@ -1889,6 +1889,20 @@ 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; + + 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