[#OSSL_STORE_attach_fn]
= OSSL_STORE_attach_fn
:mrdocs:

Deprecated loader callback that attaches to a BIO.

== Synopsis

Declared in `<openssl/store.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef xref:OSSL_STORE_LOADER_CTX.adoc[OSSL_STORE_LOADER_CTX]*(* OSSL_STORE_attach_fn)(xref:OSSL_STORE_LOADER.adoc[OSSL_STORE_LOADER] const*, xref:BIO.adoc[BIO]*, xref:OSSL_LIB_CTX.adoc[OSSL_LIB_CTX]*, char const*, xref:UI_METHOD.adoc[UI_METHOD] const*, void*);
----

== Return Value

New OSSL_STORE_LOADER_CTX, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *loader*
| Loader being invoked.
| *bio*
| BIO supplying store data.
| *libctx*
| Library context, or NULL for the default.
| *propq*
| Optional property query, or NULL.
| *ui_method*
| UI method for interactive input, or NULL.
| *ui_data*
| Application data for `ui_method.`
|===


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