__key_link_lock

Name:Lock keyring for link.

Proto:int __key_link_lock(struct key *keyring, const struct keyring_index_key *index_key)__acquires(&keyring->sem) __acquires(&keyring_serialise_link_lock)

Type:int

Parameter:

Type	Parameter	Name
struct key *	keyring
const struct keyring_index_key *	index_key

1243

If type of key != key_type_keyring Then Return -ENOTDIR

1246

lock for writing

1251

If type == key_type_keyring Then mutex_lock( & Semaphore to serialise link/link calls to prevent two link calls in parallel* introducing a cycle.)

1254

Return 0

**Caller**
Name	Describe
key_reject_and_link	key_reject_and_link - Negatively instantiate a key and link it into the keyring.@key: The key to instantiate.@timeout: The timeout on the negative key.*@error: The error to return when the key is hit.
key_create_or_update	key_create_or_update - Update or create and instantiate a key.@keyring_ref: A pointer to the destination keyring with possession flag.@type: The type of key.*@description: The searchable description for the key.
key_link	key_link - Link a key to a keyring*@keyring: The keyring to make the link in
construct_alloc_key	Allocate a new key in under-construction state and attempt to link it in to* the requested keyring.* May return a key that's already under construction instead if there was a* race between two thread calling request_key().

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