* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/audit.h>
#include <linux/kthread.h>
DEFINE_MUTEX(audit_filter_mutex);
+static void audit_free_lsm_field(struct audit_field *f)
+{
+ 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:
+ kfree(f->lsm_str);
+ security_audit_rule_free(f->lsm_rule);
+ }
+}
+
static inline void audit_free_rule(struct audit_entry *e)
{
int i;
if (erule->watch)
audit_put_watch(erule->watch);
if (erule->fields)
- for (i = 0; i < erule->field_count; i++) {
- struct audit_field *f = &erule->fields[i];
- kfree(f->lsm_str);
- security_audit_rule_free(f->lsm_rule);
- }
+ for (i = 0; i < erule->field_count; i++)
+ audit_free_lsm_field(&erule->fields[i]);
kfree(erule->fields);
kfree(erule->filterkey);
kfree(e);
struct audit_field *f)
{
if (krule->listnr != AUDIT_FILTER_EXIT ||
- krule->watch || krule->inode_f || krule->tree ||
+ krule->inode_f || krule->watch || krule->tree ||
(f->op != Audit_equal && f->op != Audit_not_equal))
return -EINVAL;
#endif
/* Common user-space to kernel rule translation. */
-static inline struct audit_entry *audit_to_entry_common(struct audit_rule *rule)
+static inline struct audit_entry *audit_to_entry_common(struct audit_rule_data *rule)
{
unsigned listnr;
struct audit_entry *entry;
;
}
if (unlikely(rule->action == AUDIT_POSSIBLE)) {
- printk(KERN_ERR "AUDIT_POSSIBLE is deprecated\n");
+ pr_err("AUDIT_POSSIBLE is deprecated\n");
goto exit_err;
}
if (rule->action != AUDIT_NEVER && rule->action != AUDIT_ALWAYS)
int i;
char *str;
- entry = audit_to_entry_common((struct audit_rule *)data);
+ entry = audit_to_entry_common(data);
if (IS_ERR(entry))
goto exit_nofree;
f->type = data->fields[i];
f->val = data->values[i];
- f->uid = INVALID_UID;
- f->gid = INVALID_GID;
- f->lsm_str = NULL;
- f->lsm_rule = NULL;
/* Support legacy tests for a valid loginuid */
if ((f->type == AUDIT_LOGINUID) && (f->val == AUDIT_UID_UNSET)) {
f->type = AUDIT_LOGINUID_SET;
f->val = 0;
+ entry->rule.pflags |= AUDIT_LOGINUID_LEGACY;
}
err = audit_field_valid(entry, f);
/* Keep currently invalid fields around in case they
* become valid after a policy reload. */
if (err == -EINVAL) {
- printk(KERN_WARNING "audit rule for LSM "
- "\'%s\' is invalid\n", str);
+ pr_warn("audit rule for LSM \'%s\' is invalid\n",
+ str);
err = 0;
}
if (err) {
data->buflen += data->values[i] =
audit_pack_string(&bufp, krule->filterkey);
break;
+ case AUDIT_LOGINUID_SET:
+ if (krule->pflags & AUDIT_LOGINUID_LEGACY && !f->val) {
+ data->fields[i] = AUDIT_LOGINUID;
+ data->values[i] = AUDIT_UID_UNSET;
+ break;
+ }
+ /* fallthrough if set */
default:
data->values[i] = f->val;
}
int i;
if (a->flags != b->flags ||
+ a->pflags != b->pflags ||
a->listnr != b->listnr ||
a->action != b->action ||
a->field_count != b->field_count)
/* Keep currently invalid fields around in case they
* become valid after a policy reload. */
if (ret == -EINVAL) {
- printk(KERN_WARNING "audit rule for LSM \'%s\' is "
- "invalid\n", df->lsm_str);
+ pr_warn("audit rule for LSM \'%s\' is invalid\n",
+ df->lsm_str);
ret = 0;
}
new = &entry->rule;
new->vers_ops = old->vers_ops;
new->flags = old->flags;
+ new->pflags = old->pflags;
new->listnr = old->listnr;
new->action = old->action;
for (i = 0; i < AUDIT_BITMASK_SIZE; i++)
int err = 0;
struct audit_entry *entry;
+ entry = audit_data_to_entry(data, datasz);
+ if (IS_ERR(entry))
+ return PTR_ERR(entry);
+
switch (type) {
case AUDIT_ADD_RULE:
- entry = audit_data_to_entry(data, datasz);
- if (IS_ERR(entry))
- return PTR_ERR(entry);
-
err = audit_add_rule(entry);
- audit_log_rule_change("add rule", &entry->rule, !err);
- if (err)
- audit_free_rule(entry);
+ audit_log_rule_change("add_rule", &entry->rule, !err);
break;
case AUDIT_DEL_RULE:
- entry = audit_data_to_entry(data, datasz);
- if (IS_ERR(entry))
- return PTR_ERR(entry);
-
err = audit_del_rule(entry);
- audit_log_rule_change("remove rule", &entry->rule, !err);
- audit_free_rule(entry);
+ audit_log_rule_change("remove_rule", &entry->rule, !err);
break;
default:
- return -EINVAL;
+ err = -EINVAL;
+ WARN_ON(1);
}
+ if (err || type == AUDIT_DEL_RULE)
+ audit_free_rule(entry);
+
return err;
}
for (i = 0; i < rule->field_count; i++) {
struct audit_field *f = &rule->fields[i];
+ pid_t pid;
int result = 0;
u32 sid;
switch (f->type) {
case AUDIT_PID:
- result = audit_comparator(task_pid_vnr(current), f->op, f->val);
+ pid = task_pid_nr(current);
+ result = audit_comparator(pid, f->op, f->val);
break;
case AUDIT_UID:
result = audit_uid_comparator(current_uid(), f->op, f->uid);