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Diffstat (limited to 'kernel/auditfilter.c')
-rw-r--r--kernel/auditfilter.c37
1 files changed, 32 insertions, 5 deletions
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 6a9a5c5a4e7..a44879b0c72 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -302,6 +302,15 @@ int __init audit_register_class(int class, unsigned *list)
return 0;
}
+int audit_match_class(int class, unsigned syscall)
+{
+ if (unlikely(syscall >= AUDIT_BITMASK_SIZE * sizeof(__u32)))
+ return 0;
+ if (unlikely(class >= AUDIT_SYSCALL_CLASSES || !classes[class]))
+ return 0;
+ return classes[class][AUDIT_WORD(syscall)] & AUDIT_BIT(syscall);
+}
+
/* Common user-space to kernel rule translation. */
static inline struct audit_entry *audit_to_entry_common(struct audit_rule *rule)
{
@@ -404,6 +413,7 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
case AUDIT_PERS:
case AUDIT_ARCH:
case AUDIT_MSGTYPE:
+ case AUDIT_PPID:
case AUDIT_DEVMAJOR:
case AUDIT_DEVMINOR:
case AUDIT_EXIT:
@@ -413,6 +423,10 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
case AUDIT_ARG2:
case AUDIT_ARG3:
break;
+ case AUDIT_PERM:
+ if (f->val & ~15)
+ goto exit_free;
+ break;
case AUDIT_INODE:
err = audit_to_inode(&entry->rule, f);
if (err)
@@ -567,6 +581,10 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
entry->rule.buflen += f->val;
entry->rule.filterkey = str;
break;
+ case AUDIT_PERM:
+ if (f->val & ~15)
+ goto exit_free;
+ break;
default:
goto exit_free;
}
@@ -913,7 +931,7 @@ static void audit_update_watch(struct audit_parent *parent,
}
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
- audit_log_format(ab, "audit updated rules specifying watch=");
+ audit_log_format(ab, "audit updated rules specifying path=");
audit_log_untrustedstring(ab, owatch->path);
audit_log_format(ab, " with dev=%u ino=%lu\n", dev, ino);
audit_log_end(ab);
@@ -936,19 +954,28 @@ static void audit_remove_parent_watches(struct audit_parent *parent)
struct audit_watch *w, *nextw;
struct audit_krule *r, *nextr;
struct audit_entry *e;
+ struct audit_buffer *ab;
mutex_lock(&audit_filter_mutex);
parent->flags |= AUDIT_PARENT_INVALID;
list_for_each_entry_safe(w, nextw, &parent->watches, wlist) {
list_for_each_entry_safe(r, nextr, &w->rules, rlist) {
e = container_of(r, struct audit_entry, rule);
+
+ ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
+ audit_log_format(ab, "audit implicitly removed rule path=");
+ audit_log_untrustedstring(ab, w->path);
+ if (r->filterkey) {
+ audit_log_format(ab, " key=");
+ audit_log_untrustedstring(ab, r->filterkey);
+ } else
+ audit_log_format(ab, " key=(null)");
+ audit_log_format(ab, " list=%d", r->listnr);
+ audit_log_end(ab);
+
list_del(&r->rlist);
list_del_rcu(&e->list);
call_rcu(&e->rcu, audit_free_rule_rcu);
-
- audit_log(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE,
- "audit implicitly removed rule from list=%d\n",
- AUDIT_FILTER_EXIT);
}
audit_remove_watch(w);
}