keyring_search

Name:keyring_search - Search the supplied keyring tree for a matching key*@keyring: The root of the keyring tree to be searched

Proto:key_ref_t keyring_search(key_ref_t keyring, struct key_type *type, const char *description, bool recurse)

Type:key_ref_t

Parameter:

Type	Parameter	Name
key_ref_t	keyring
struct key_type *	type
const char *	description
bool	recurse

946

struct keyring_search_context ctx = {type = type, description = description, desc_len = strlen - Find the length of a string*@s: The string to be sized, cred = current_cred - Access the current task's subjective credentials* Access the subjective credentials of the current task. RCU-safe,* since nobody else can modify it.(), cmp = By default, we keys found by getting an exact match on their descriptions., Raw match data = description, Type of lookup for this search. = Direct lookup by description. , flags = Override NO_STATE_CHECK , }

959

If recurse Then flags |= Search child keyrings also

961

If match_preparse Then

962

ret = match_preparse( & match_data)

963

If ret < 0 Then Return ERR_PTR(ret)

967

_read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other

968

key = keyring_search_rcu - Search a keyring tree for a matching key under RCU*@keyring_ref: A pointer to the keyring with possession indicator

969

_read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()

971

If match_free Then match_free( & match_data)

973

Return key

**Caller**
Name	Describe
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.
request_asymmetric_key	Request an asymmetric key.
digsig_verify	digsig_verify() - digital signature verification with public key@keyring: keyring to search key in@sig: digital signature@siglen: length of the signature@data: data@datalen: length of the data Returns 0 on success, -EINVAL otherwise

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