[#OSSL_PROVIDER_query_operation]
= OSSL_PROVIDER_query_operation
:mrdocs:

Query algorithms a provider implements for an operation.

== Synopsis

Declared in `<openssl/provider.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_ALGORITHM.adoc[OSSL_ALGORITHM] const*
OSSL_PROVIDER_query_operation(
    xref:OSSL_PROVIDER.adoc[OSSL_PROVIDER] const* prov,
    int operation_id,
    int* no_cache);
----

== Return Value

Algorithm array owned by the provider until OSSL_PROVIDER_unquery_operation(), or NULL.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *prov*
| Provider to query.
| *operation_id*
| Operation identifier (OSSL_OP_*).
| *no_cache*
| Optional output set nonzero when results must not be cached; may be NULL.
|===


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