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Say a bit more about BIO_METHOD.

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The hooks should be self-explanatory, except it's non-obvious that
everything assumes BIOs implement BIO_flush.

Change-Id: If09997d3724c4a7608273dc592dc2d099c4353e9
Reviewed-on: https://boringssl-review.googlesource.com/22664
Commit-Queue: Adam Langley <agl@google.com>
Reviewed-by: Adam Langley <agl@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
This commit is contained in:
David Benjamin 2017-11-06 13:48:23 -05:00 committed by CQ bot account: commit-bot@chromium.org
parent 5b90eb98f6
commit b1cbe19790
1 changed files with 5 additions and 2 deletions
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7
include/openssl/bio.h
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@ -622,7 +622,9 @@ OPENSSL_EXPORT int BIO_get_new_index(void);
// Use the |BIO_meth_set_*| functions below to initialize the |BIO_METHOD|. The
// function implementations may use |BIO_set_data| and |BIO_get_data| to add
// method-specific state to associated |BIO|s. Additionally, |BIO_set_init| must
// be called after an associated |BIO| is fully initialized.
// be called after an associated |BIO| is fully initialized. State set via
// |BIO_set_data| may be released by configuring a destructor with
// |BIO_meth_set_destroy|.
OPENSSL_EXPORT BIO_METHOD *BIO_meth_new(int type, const char *name);
// BIO_meth_free releases memory associated with |method|.
@ -640,7 +642,8 @@ OPENSSL_EXPORT int BIO_meth_set_destroy(BIO_METHOD *method,
int (*destroy)(BIO *));
// BIO_meth_set_write sets the implementation of |BIO_write| for |method| and
// returns one.
// returns one. |BIO_METHOD|s which implement |BIO_write| should also implement
// |BIO_CTRL_FLUSH|. (See |BIO_meth_set_ctrl|.)
OPENSSL_EXPORT int BIO_meth_set_write(BIO_METHOD *method,
int (*write)(BIO *, const char *, int));