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KEYS: Consolidate the concept of an 'index key' for key access

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Consolidate the concept of an 'index key' for accessing keys.  The index key
is the search term needed to find a key directly - basically the key type and
the key description.  We can add to that the description length.

This will be useful when turning a keyring into an associative array rather
than just a pointer block.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2013-09-24 10:35:15 +01:00
parent 7e55ca6dcd
commit 16feef4340
5 changed files with 83 additions and 67 deletions
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21
include/linux/key.h
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@ -82,6 +82,12 @@ struct key_owner;
struct keyring_list;
struct keyring_name;
struct keyring_index_key {
struct key_type *type;
const char *description;
size_t desc_len;
};
/*****************************************************************************/
/*
* key reference with possession attribute handling
@ -129,7 +135,6 @@ struct key {
struct list_head graveyard_link;
struct rb_node serial_node;
};
struct key_type *type; /* type of key */
struct rw_semaphore sem; /* change vs change sem */
struct key_user *user; /* owner of this key */
void *security; /* security data for this key */
@ -163,12 +168,18 @@ struct key {
#define KEY_FLAG_ROOT_CAN_CLEAR 6 /* set if key can be cleared by root without permission */
#define KEY_FLAG_INVALIDATED 7 /* set if key has been invalidated */
/* the description string
* - this is used to match a key against search criteria
* - this should be a printable string
/* the key type and key description string
* - the desc is used to match a key against search criteria
* - it should be a printable string
* - eg: for krb5 AFS, this might be "afs@REDHAT.COM"
*/
char *description;
union {
struct keyring_index_key index_key;
struct {
struct key_type *type; /* type of key */
char *description;
};
};
/* type specific data
* - this is used by the keyring type to index the name