Audit: internally use the new LSM audit hooks
Convert Audit to use the new LSM Audit hooks instead of
the exported SELinux interface.
Basically, use:
security_audit_rule_init
secuirty_audit_rule_free
security_audit_rule_known
security_audit_rule_match
instad of (respectively) :
selinux_audit_rule_init
selinux_audit_rule_free
audit_rule_has_selinux
selinux_audit_rule_match
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Acked-by: James Morris <jmorris@namei.org>
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 35e58a1..7c69cb5 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -29,7 +29,6 @@
#include <linux/sched.h>
#include <linux/inotify.h>
#include <linux/security.h>
-#include <linux/selinux.h>
#include "audit.h"
/*
@@ -39,7 +38,7 @@
* Synchronizes writes and blocking reads of audit's filterlist
* data. Rcu is used to traverse the filterlist and access
* contents of structs audit_entry, audit_watch and opaque
- * selinux rules during filtering. If modified, these structures
+ * LSM rules during filtering. If modified, these structures
* must be copied and replace their counterparts in the filterlist.
* An audit_parent struct is not accessed during filtering, so may
* be written directly provided audit_filter_mutex is held.
@@ -141,7 +140,7 @@
for (i = 0; i < e->rule.field_count; i++) {
struct audit_field *f = &e->rule.fields[i];
kfree(f->se_str);
- selinux_audit_rule_free(f->se_rule);
+ security_audit_rule_free(f->se_rule);
}
kfree(e->rule.fields);
kfree(e->rule.filterkey);
@@ -598,12 +597,12 @@
goto exit_free;
entry->rule.buflen += f->val;
- err = selinux_audit_rule_init(f->type, f->op, str,
- &f->se_rule);
+ err = security_audit_rule_init(f->type, f->op, str,
+ (void **)&f->se_rule);
/* Keep currently invalid fields around in case they
* become valid after a policy reload. */
if (err == -EINVAL) {
- printk(KERN_WARNING "audit rule for selinux "
+ printk(KERN_WARNING "audit rule for LSM "
"\'%s\' is invalid\n", str);
err = 0;
}
@@ -863,9 +862,9 @@
return new;
}
-/* Duplicate selinux field information. The se_rule is opaque, so must be
+/* Duplicate LSM field information. The se_rule is opaque, so must be
* re-initialized. */
-static inline int audit_dupe_selinux_field(struct audit_field *df,
+static inline int audit_dupe_lsm_field(struct audit_field *df,
struct audit_field *sf)
{
int ret = 0;
@@ -878,12 +877,12 @@
df->se_str = se_str;
/* our own (refreshed) copy of se_rule */
- ret = selinux_audit_rule_init(df->type, df->op, df->se_str,
- &df->se_rule);
+ ret = security_audit_rule_init(df->type, df->op, df->se_str,
+ (void **)&df->se_rule);
/* Keep currently invalid fields around in case they
* become valid after a policy reload. */
if (ret == -EINVAL) {
- printk(KERN_WARNING "audit rule for selinux \'%s\' is "
+ printk(KERN_WARNING "audit rule for LSM \'%s\' is "
"invalid\n", df->se_str);
ret = 0;
}
@@ -892,7 +891,7 @@
}
/* Duplicate an audit rule. This will be a deep copy with the exception
- * of the watch - that pointer is carried over. The selinux specific fields
+ * of the watch - that pointer is carried over. The LSM specific fields
* will be updated in the copy. The point is to be able to replace the old
* rule with the new rule in the filterlist, then free the old rule.
* The rlist element is undefined; list manipulations are handled apart from
@@ -945,7 +944,7 @@
case AUDIT_OBJ_TYPE:
case AUDIT_OBJ_LEV_LOW:
case AUDIT_OBJ_LEV_HIGH:
- err = audit_dupe_selinux_field(&new->fields[i],
+ err = audit_dupe_lsm_field(&new->fields[i],
&old->fields[i]);
break;
case AUDIT_FILTERKEY:
@@ -1763,38 +1762,12 @@
return result;
}
-/* Check to see if the rule contains any selinux fields. Returns 1 if there
- are selinux fields specified in the rule, 0 otherwise. */
-static inline int audit_rule_has_selinux(struct audit_krule *rule)
-{
- int i;
-
- for (i = 0; i < rule->field_count; i++) {
- struct audit_field *f = &rule->fields[i];
- switch (f->type) {
- case AUDIT_SUBJ_USER:
- case AUDIT_SUBJ_ROLE:
- case AUDIT_SUBJ_TYPE:
- case AUDIT_SUBJ_SEN:
- case AUDIT_SUBJ_CLR:
- case AUDIT_OBJ_USER:
- case AUDIT_OBJ_ROLE:
- case AUDIT_OBJ_TYPE:
- case AUDIT_OBJ_LEV_LOW:
- case AUDIT_OBJ_LEV_HIGH:
- return 1;
- }
- }
-
- return 0;
-}
-
/* This function will re-initialize the se_rule field of all applicable rules.
- * It will traverse the filter lists serarching for rules that contain selinux
+ * It will traverse the filter lists serarching for rules that contain LSM
* specific filter fields. When such a rule is found, it is copied, the
- * selinux field is re-initialized, and the old rule is replaced with the
+ * LSM field is re-initialized, and the old rule is replaced with the
* updated rule. */
-int selinux_audit_rule_update(void)
+int audit_update_lsm_rules(void)
{
struct audit_entry *entry, *n, *nentry;
struct audit_watch *watch;
@@ -1806,7 +1779,7 @@
for (i = 0; i < AUDIT_NR_FILTERS; i++) {
list_for_each_entry_safe(entry, n, &audit_filter_list[i], list) {
- if (!audit_rule_has_selinux(&entry->rule))
+ if (!security_audit_rule_known(&entry->rule))
continue;
watch = entry->rule.watch;
@@ -1817,7 +1790,7 @@
* return value */
if (!err)
err = PTR_ERR(nentry);
- audit_panic("error updating selinux filters");
+ audit_panic("error updating LSM filters");
if (watch)
list_del(&entry->rule.rlist);
list_del_rcu(&entry->list);