key_link

Name:key_link - Link a key to a keyring*@keyring: The keyring to make the link in

Proto:int key_link(struct key *keyring, struct key *key)

Type:int

Parameter:

Type	Parameter	Name
struct key *	keyring
struct key *	key

1437

struct assoc_array_edit * edit = NULL

1440

kenter("{%d,%d}", key serial number , _read - get a refcount's value*@r: the refcount* Return: the refcount's value)

1442

key_check(keyring)

1443

1445

ret = Lock keyring for link.

1446

If ret < 0 Then Go to error

1449

ret = Preallocate memory so that a key can be linked into to a keyring.

1450

If ret < 0 Then Go to error_end

1453

kdebug("begun {%d,%d}", key serial number , _read - get a refcount's value*@r: the refcount* Return: the refcount's value)

1454

ret = Check addition of keys to restricted keyrings.

1455

If ret == 0 Then ret = Check already instantiated keys aren't going to be a problem.* The caller must have called __key_link_begin(). Don't need to call this for* keys that were created since __key_link_begin() was called.

1457

If ret == 0 Then Link a key into to a keyring.* Must be called with __key_link_begin() having being called. Discards any* already extant link to matching key if there is one, so that each keyring* holds at most one link to any given key of a particular type+description

1460

1461

Finish linking a key into to a keyring.* Must be called with __key_link_begin() having being called.

1462

error :

1463

kleave(" = %d {%d,%d}", ret, key serial number , _read - get a refcount's value*@r: the refcount* Return: the refcount's value)

1464

Return ret

**Caller**
Name	Describe
keyctl_keyring_link	Create a link from a keyring to a key if there's no matching key in the* keyring, otherwise replace the link to the matching key with a link to the* new key.* The key must grant the caller Link permission and the the keyring must grant
keyctl_keyring_search	Search the specified keyring and any keyrings it links to for a matching* key
look_up_user_keyrings	Look up the user and user session keyrings for the current process's UID,* creating them if they don't exist.
call_sbin_request_key	Request userspace finish the construction of a key* - execute "/sbin/request-key "
request_key_and_link	quest_key_and_link - Request a key and cache it in a keyring.@type: The type of key we want.@description: The searchable description of the key.*@domain_tag: The domain in which the key operates.
key_get_persistent	Get the persistent keyring for a specific UID and link it to the nominated* keyring.

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