| =pod |
| |
| =head1 NAME |
| |
| ERR_new, ERR_set_debug, ERR_set_error, ERR_vset_error |
| - Error recording building blocks |
| |
| =head1 SYNOPSIS |
| |
| #include <openssl/err.h> |
| |
| void ERR_new(void); |
| void ERR_set_debug(const char *file, int line, const char *func); |
| void ERR_set_error(int lib, int reason, const char *fmt, ...); |
| void ERR_vset_error(int lib, int reason, const char *fmt, va_list args); |
| |
| =head1 DESCRIPTION |
| |
| The functions described here are generally not used directly, but |
| rather through macros such as L<ERR_raise(3)>. |
| They can still be useful for anyone that wants to make their own |
| macros. |
| |
| ERR_new() allocates a new slot in the thread's error queue. |
| |
| ERR_set_debug() sets the debug information related to the current |
| error in the thread's error queue. |
| The values that can be given are the filename I<file>, line in the |
| file I<line> and the name of the function I<func> where the error |
| occurred. |
| The names must be constant, this function will only save away the |
| pointers, not copy the strings. |
| |
| ERR_set_error() sets the error information, which are the library |
| number I<lib> and the reason code I<reason>, and additional data as a |
| format string I<fmt> and an arbitrary number of arguments. |
| The additional data is processed with L<BIO_snprintf(3)> to form the |
| additional data string, which is allocated and store in the error |
| record. |
| |
| ERR_vset_error() works like ERR_set_error(), but takes a B<va_list> |
| argument instead of a variable number of arguments. |
| |
| =head1 RETURN VALUES |
| |
| ERR_new, ERR_set_debug, ERR_set_error and ERR_vset_error |
| do not return any values. |
| |
| =head1 NOTES |
| |
| The library number is unique to each unit that records errors. |
| OpenSSL has a number of preallocated ones for its own uses, but |
| others may allocate their own library number dynamically with |
| L<ERR_get_next_error_library(3)>. |
| |
| Reason codes are unique within each library, and may have an |
| associated set of strings as a short description of the reason. |
| For dynamically allocated library numbers, reason strings are recorded |
| with L<ERR_load_strings(3)>. |
| |
| Provider authors are supplied with core versions of these functions, |
| see L<provider-base(7)>. |
| |
| =head1 SEE ALSO |
| |
| L<ERR_raise(3)>, L<ERR_get_next_error_library(3)>, |
| L<ERR_load_strings(3)>, L<BIO_snprintf(3)>, L<provider-base(7)> |
| |
| =head1 COPYRIGHT |
| |
| Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved. |
| |
| Licensed under the Apache License 2.0 (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 |