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