BIO_set_data, BIO_get_data, BIO_set_init, BIO_get_init, BIO_set_shutdown,
BIO_get_shutdown - functions for managing BIO state information
void BIO_set_data(BIO *a, void *ptr);
void *BIO_get_data(BIO *a);
void BIO_set_init(BIO *a, int init);
int BIO_get_init(BIO *a);
void BIO_set_shutdown(BIO *a, int shut);
int BIO_get_shutdown(BIO *a);
These functions are mainly useful when implementing a custom BIO.
function associates the custom data pointed to by
with the BIO. This data can subsequently be retrieved via a call to
. This can be used by custom BIOs for storing
implementation specific information.
function sets the value of the BIO's "init"
flag to indicate whether initialisation has been completed for this BIO or
not. A non-zero value indicates that initialisation is complete, whilst zero
indicates that it is not. Often initialisation will complete during initial
construction of the BIO. For some BIOs however, initialisation may not
complete until after additional steps have occurred (for example through
calling custom ctrls). The BIO_get_init()
function returns the value of
the "init" flag.
functions set and
get the state of this BIO's shutdown (i.e. BIO_CLOSE) flag. If set then the
underlying resource is also closed when the BIO is freed.
returns a pointer to the implementation specific custom
data associated with this BIO, or NULL if none has been set.
returns the state of the BIO's init flag.
returns the stat of the BIO's shutdown (i.e.
The functions described here were added in OpenSSL version 1.1.0.
Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (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