BIO_GET_EX_NEW_INDEX(3)    Library Functions Manual    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, 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/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 ex_data 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 ex_data part of the TYPE object.

     TYPE_set_app_data() and TYPE_get_app_data() are deprecated wrapper macros
     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.

     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.

Linux 6.8.7-arch1-1            November 19, 2023           Linux 6.8.7-arch1-1