diff options
| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2015-11-10 08:34:46 -0500 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2015-12-15 10:01:43 -0500 |
| commit | d3600bcf9d64d88dc1d189a754dcfab960ce751f (patch) | |
| tree | 0db5cee0ddb99cfe1cbd7f8314653f36ddf5005f /include/linux/key.h | |
| parent | 80eae209d63ac6361c7b445f7e7e41f39c044772 (diff) | |
KEYS: prevent keys from being removed from specified keyrings
Userspace should not be allowed to remove keys from certain keyrings
(eg. blacklist), though the keys themselves can expire.
This patch defines a new key flag named KEY_FLAG_KEEP to prevent
userspace from being able to unlink, revoke, invalidate or timed
out a key on a keyring. When this flag is set on the keyring, all
keys subsequently added are flagged.
In addition, when this flag is set, the keyring itself can not be
cleared.
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Diffstat (limited to 'include/linux/key.h')
| -rw-r--r-- | include/linux/key.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/key.h b/include/linux/key.h index 66f705243985..7321ab8ef949 100644 --- a/include/linux/key.h +++ b/include/linux/key.h @@ -177,6 +177,7 @@ struct key { #define KEY_FLAG_TRUSTED_ONLY 9 /* set if keyring only accepts links to trusted keys */ #define KEY_FLAG_BUILTIN 10 /* set if key is builtin */ #define KEY_FLAG_ROOT_CAN_INVAL 11 /* set if key can be invalidated by root without permission */ +#define KEY_FLAG_KEEP 12 /* set if key should not be removed */ /* the key type and key description string * - the desc is used to match a key against search criteria |