linux/Documentation/security
David Howells fd75815f72 KEYS: Add invalidation support
Add support for invalidating a key - which renders it immediately invisible to
further searches and causes the garbage collector to immediately wake up,
remove it from keyrings and then destroy it when it's no longer referenced.

It's better not to do this with keyctl_revoke() as that marks the key to start
returning -EKEYREVOKED to searches when what is actually desired is to have the
key refetched.

To invalidate a key the caller must be granted SEARCH permission by the key.
This may be too strict.  It may be better to also permit invalidation if the
caller has any of READ, WRITE or SETATTR permission.

The primary use for this is to evict keys that are cached in special keyrings,
such as the DNS resolver or an ID mapper.

Signed-off-by: David Howells <dhowells@redhat.com>
2012-05-11 10:56:56 +01:00
..
00-INDEX security: Yama LSM 2012-02-10 09:18:52 +11:00
apparmor.txt
credentials.txt Documentation: clarify the purpose of LSMs 2011-11-16 12:37:27 +11:00
keys-ecryptfs.txt encrypted-keys: move ecryptfs documentation to proper location 2011-06-30 19:08:14 +10:00
keys-request-key.txt
keys-trusted-encrypted.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
keys.txt KEYS: Add invalidation support 2012-05-11 10:56:56 +01:00
LSM.txt Documentation: clarify the purpose of LSMs 2011-11-16 12:37:27 +11:00
SELinux.txt
Smack.txt Documentation: Fix multiple typo in Documentation 2012-03-07 16:08:24 +01:00
tomoyo.txt
Yama.txt Yama: add additional ptrace scopes 2012-04-19 13:39:56 +10:00