=pod

=head1 NAME

ERR_load_strings, ERR_PACK, ERR_get_next_error_library - load
arbitrary error strings

=head1 SYNOPSIS

 #include <openssl/err.h>

 int ERR_load_strings(int lib, ERR_STRING_DATA *str);

 int ERR_get_next_error_library(void);

 unsigned long ERR_PACK(int lib, int func, int reason);

=head1 DESCRIPTION

ERR_load_strings() registers error strings for library number B<lib>.

B<str> is an array of error string data:

 typedef struct ERR_string_data_st
 {
     unsigned long error;
     char *string;
 } ERR_STRING_DATA;

The error code is generated from the library number and a function and
reason code: B<error> = ERR_PACK(B<lib>, B<func>, B<reason>).
ERR_PACK() is a macro.

The last entry in the array is {0,0}.

ERR_get_next_error_library() can be used to assign library numbers
to user libraries at runtime.

=head1 RETURN VALUES

ERR_load_strings() returns 1 for success and 0 for failure. ERR_PACK() returns the error code.
ERR_get_next_error_library() returns zero on failure, otherwise a new
library number.

=head1 SEE ALSO

L<ERR_load_strings(3)>

=head1 COPYRIGHT

Copyright 2000-2021 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
L<https://www.openssl.org/source/license.html>.

=cut
