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KEYS: Add a key type op to permit the key description to be vetted

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Add a key type operation to permit the key type to vet the description of a new
key that key_alloc() is about to allocate.  The operation may reject the
description if it wishes with an error of its choosing.  If it does this, the
key will not be allocated.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
David Howells
2011-03-07 15:05:59 +00:00
committed by James Morris
parent 633e804e89
commit b9fffa3877
4 changed files with 37 additions and 0 deletions
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3
include/linux/key-type.h
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@ -41,6 +41,9 @@ struct key_type {
*/
size_t def_datalen;
/* vet a description */
int (*vet_description)(const char *description);
/* instantiate a key of this type
* - this method should call key_payload_reserve() to determine if the
* user's quota will hold the payload