[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20090804145541.17676.99745.stgit@warthog.procyon.org.uk>
Date: Tue, 04 Aug 2009 15:55:41 +0100
From: David Howells <dhowells@...hat.com>
To: torvalds@...l.org, akpm@...ux-foundation.org, jmorris@...ei.org
Cc: serue@...ibm.com, linux-kernel@...r.kernel.org,
linux-security-module@...r.kernel.org,
David Howells <dhowells@...hat.com>
Subject: [PATCH 3/6] KEYS: Flag dead keys to induce EKEYREVOKED
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: David Howells <dhowells@...hat.com>
---
security/keys/key.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/security/keys/key.c b/security/keys/key.c
index 3762d5b..bd9d267 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -956,8 +956,10 @@ void unregister_key_type(struct key_type *ktype)
for (_n = rb_first(&key_serial_tree); _n; _n = rb_next(_n)) {
key = rb_entry(_n, struct key, serial_node);
- if (key->type == ktype)
+ if (key->type == ktype) {
key->type = &key_type_dead;
+ set_bit(KEY_FLAG_DEAD, &key->flags);
+ }
}
spin_unlock(&key_serial_lock);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists