Commit f041ae2f authored by David Howells's avatar David Howells Committed by James Morris

KEYS: Flag dead keys to induce EKEYREVOKED [try #6]

Set the KEY_FLAG_DEAD flag on keys for which the type has been removed.  This
causes the key_permission() function to return EKEYREVOKED in response to
various commands.  It does not, however, prevent unlinking or clearing of
keyrings from detaching the key.
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Acked-by: default avatarSerge Hallyn <serue@us.ibm.com>
Signed-off-by: default avatarJames Morris <jmorris@namei.org>
parent 0c2c9a3f
...@@ -956,8 +956,10 @@ void unregister_key_type(struct key_type *ktype) ...@@ -956,8 +956,10 @@ void unregister_key_type(struct key_type *ktype)
for (_n = rb_first(&key_serial_tree); _n; _n = rb_next(_n)) { for (_n = rb_first(&key_serial_tree); _n; _n = rb_next(_n)) {
key = rb_entry(_n, struct key, serial_node); key = rb_entry(_n, struct key, serial_node);
if (key->type == ktype) if (key->type == ktype) {
key->type = &key_type_dead; key->type = &key_type_dead;
set_bit(KEY_FLAG_DEAD, &key->flags);
}
} }
spin_unlock(&key_serial_lock); spin_unlock(&key_serial_lock);
......
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