BIO_GET_EX_NEW_INDEX(3)

NAME
BIO_get_ex_new_index, BIO_set_ex_data, BIO_get_ex_data, BIO_set_app_data, BIO_get_app_data, ENGINE_get_ex_new_index, ENGINE_set_ex_data, ENGINE_get_ex_data, UI_get_ex_new_index, UI_set_ex_data, UI_get_ex_data, X509_get_ex_new_index, X509_set_ex_data, X509_get_ex_data, EC_KEY_get_ex_new_index, EC_KEY_get_ex_data, EC_KEY_set_ex_data - application-specific data

SYNOPSIS
#include <openssl/bio.h>
#include <openssl/engine.h>
#include <openssl/ui.h>
#include <openssl/x509.h>
#include <openssl/ec.h>
int
TYPE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
int
TYPE_set_ex_data(TYPE *d, int idx, void *arg);
void *
TYPE_get_ex_data(TYPE *d, int idx);
int
TYPE_set_app_data(TYPE *d, void *arg);
void *
TYPE_get_app_data(TYPE *d);

DESCRIPTION
In the description here, TYPE is used a placeholder for any of the OpenSSL datatypes listed in CRYPTO_get_ex_new_index(3).

These functions handle application-specific data in OpenSSL data structures. Their usage is identical to that of RSA_get_ex_new_index(3), RSA_set_ex_data(3), and RSA_get_ex_data(3).

TYPE_get_ex_new_index() is a macro that calls CRYPTO_get_ex_new_index(3) with the correct index value.

TYPE_set_ex_data() is a function that calls CRYPTO_set_ex_data(3) with an offset into the opaque exdata part of the TYPE object.

TYPE_get_ex_data() is a function that calls CRYPTO_get_ex_data(3) with an offset into the opaque exdata part of the TYPE object.

TYPE_set_app_data() and TYPE_get_app_data() are deprecated wrappers that call TYPE_set_ex_data() and TYPE_get_ex_data() with idx set to 0.

RETURN VALUES
TYPE_get_new_ex_index() returns a new index on success or -1 on error.

TYPE_set_ex_data() and TYPE_set_app_data() return 1 on success or 0 on error.

TYPE_get_ex_data() and TYPE_get_app_data() return the application data or NULL if an error occurred.

SEE ALSO
BIO_new(3), CRYPTO_get_ex_new_index(3), RSA_get_ex_new_index(3), X509_new(3)

HISTORY
BIO_set_app_data() and BIO_get_app_data() first appeared in SSLeay 0.8.1. BIO_get_ex_new_index(), BIO_set_ex_data(), and BIO_get_ex_data() first appeared in SSLeay 0.9.0. These functions have been available since OpenBSD 2.4.

X509_get_ex_new_index(), X509_set_ex_data(), and X509_get_ex_data() first appeared in OpenSSL 0.9.5 and have been available since OpenBSD 2.7.

ENGINE_get_ex_new_index(), ENGINE_set_ex_data(), ENGINE_get_ex_data(), UI_get_ex_new_index(), UI_set_ex_data(), and UI_get_ex_data() first appeared in OpenSSL 0.9.7 and have been available since OpenBSD 3.2.

EC_KEY_get_ex_new_index(), EC_KEY_set_ex_data(), and EC_KEY_get_ex_data() first appeared in OpenSSL 1.1.0 and have been available since OpenBSD 6.5.