OSSL_STORE_ATTACH(3ossl)

✨ OSSL_STORE_ATTACH(3ossl) ✨

okay bestie, welcome to the OpenSSL corner of the group chat 🎀 this one's called OSSL_STORE_attach and it's giving “read objects from a BIO” energy. yes, the whole NAME section. we're doing this. 💅

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🦋 SYNOPSIS 🦋

#include <openssl/store.h>

OSSL_STORE_CTX *OSSL_STORE_attach(BIO *bio, const char *scheme,
                                  OSSL_LIB_CTX *libctx, const char *propq,
                                  const UI_METHOD *ui_method, void *ui_data,
                                  const OSSL_PARAM params[],
                                  OSSL_STORE_post_process_info_fn post_process,
                                  void *post_process_data);

look at her. eight arguments and not one of them is optional-looking. icon behavior honestly 👑

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🌸 DESCRIPTION 🌸

so OSSL_STORE_attach() is literally the sibling of OSSL_STORE_open(3) — same vibe, different door 🚪

the one (1) difference that matters: instead of handing it a uri, you hand it a BIO — that's bio — plus a scheme, and that scheme is what tells OpenSSL which loader should be used to process the data. it's like telling the barista which machine to use, but the bean is already in your hand. no cap ✨

💖 tiny but crucial detail bestie: if the call succeeds, the reference count of the BIO object goes up by 1. so don't be out here freeing things twice, iykyk 😭

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🎀 RETURN VALUES 🎀

• win → returns a pointer to an OSSL_STORE_CTX
• L → returns NULL on failure

that's it. that's the whole plot. slay 💅

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👑 SEE ALSO 👑

• ossl_store(7)
• OSSL_STORE_open(3)

go read those too, they're the extended universe fr fr 🫶

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⭐ HISTORY ⭐

OSSL_STORE_attach() was added in OpenSSL 3.0 — so she's a 3.0 baby, born iconic 🌈

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💜 COPYRIGHT 💜

Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.

okay legal bestie moment: read the license. it's not a vibe suggestion, it's the rules 🧚

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and that's the page!! this was OpenSSL 3.5.9, dated 2026-09-29, brought to you by the OSSL_STORE_ATTACH(3ossl) manual 💖 mwah, go read some objects from a BIO, you got this 🌸🦋