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9c0586d5fc
Also patch find-doc-nits to ignore a Microsoft trademark and not flag it as a spelling error. Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/10023)
137 lines
5.4 KiB
Plaintext
137 lines
5.4 KiB
Plaintext
=pod
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=head1 NAME
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ERR_get_error, ERR_peek_error, ERR_peek_last_error,
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ERR_get_error_line, ERR_peek_error_line, ERR_peek_last_error_line,
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ERR_get_error_func, ERR_peek_error_func, ERR_peek_last_error_func,
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ERR_get_error_data, ERR_peek_error_data, ERR_peek_last_error_data,
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ERR_get_error_all, ERR_peek_error_all, ERR_peek_last_error_all,
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ERR_get_error_line_data, ERR_peek_error_line_data, ERR_peek_last_error_line_data
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- obtain error code and data
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=head1 SYNOPSIS
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#include <openssl/err.h>
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unsigned long ERR_get_error(void);
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unsigned long ERR_peek_error(void);
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unsigned long ERR_peek_last_error(void);
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unsigned long ERR_get_error_line(const char **file, int *line);
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unsigned long ERR_peek_error_line(const char **file, int *line);
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unsigned long ERR_peek_last_error_line(const char **file, int *line);
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unsigned long ERR_get_error_func(const char **func);
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unsigned long ERR_peek_error_func(const char **func);
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unsigned long ERR_peek_last_error_func(const char **func);
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unsigned long ERR_get_error_data(const char **data, int *flags);
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unsigned long ERR_peek_error_data(const char **data, int *flags);
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unsigned long ERR_peek_last_error_data(const char **data, int *flags);
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unsigned long ERR_get_error_all(const char **file, int *line,
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const char *func,
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const char **data, int *flags);
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unsigned long ERR_peek_error_all(const char **file, int *line,
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const char *func,
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const char **data, int *flags);
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unsigned long ERR_peek_last_error_all(const char **file, int *line,
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const char *func,
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const char **data, int *flags);
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Deprecated since OpenSSL 3.0:
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unsigned long ERR_get_error_line_data(const char **file, int *line,
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const char **data, int *flags);
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unsigned long ERR_peek_error_line_data(const char **file, int *line,
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const char **data, int *flags);
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unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
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const char **data, int *flags);
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=head1 DESCRIPTION
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ERR_get_error() returns the earliest error code from the thread's error
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queue and removes the entry. This function can be called repeatedly
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until there are no more error codes to return.
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ERR_peek_error() returns the earliest error code from the thread's
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error queue without modifying it.
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ERR_peek_last_error() returns the latest error code from the thread's
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error queue without modifying it.
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See L<ERR_GET_LIB(3)> for obtaining further specific information
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such as the reason of the error,
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and L<ERR_error_string(3)> for human-readable error messages.
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ERR_get_error_line(), ERR_peek_error_line() and
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ERR_peek_last_error_line() are the same as ERR_get_error(),
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ERR_peek_error() and ERR_peek_last_error(), but on success they
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additionally store the filename and line number where
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the error occurred in *B<file> and *B<line>, as far as they are not B<NULL>.
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An unset filename is indicated as B<"">, i.e., an empty string.
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An unset line number is indicated as B<0>.
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A pointer returned this way by these functions and the ones below
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is valid until the respective entry is removed from the error queue.
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ERR_get_error_func(), ERR_peek_error_func() and
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ERR_peek_last_error_func() are the same as ERR_get_error(),
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ERR_peek_error() and ERR_peek_last_error(), but on success they
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additionally store the name of the function where the error occurred
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in *B<func>, unless it is B<NULL>.
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An unset function name is indicated as B<"">.
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ERR_get_error_data(), ERR_peek_error_data() and
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ERR_peek_last_error_data() are the same as ERR_get_error(),
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ERR_peek_error() and ERR_peek_last_error(), but on success they
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additionally store additional data and flags associated with the error
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code in *B<data> and *B<flags>, as far as they are not B<NULL>.
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Unset data is indicated as B<"">.
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In this case the value given for the flag is irrelevant (and equals B<0>).
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*B<data> contains a string if *B<flags>&B<ERR_TXT_STRING> is true.
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ERR_get_error_all(), ERR_peek_error_all() and
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ERR_peek_last_error_all() are combinations of all of the above.
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ERR_get_error_line_data(), ERR_peek_error_line_data() and
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ERR_peek_last_error_line_data() are older variants of ERR_get_error_all(),
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ERR_peek_error_all() and ERR_peek_last_error_all(), and should no longer
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be used.
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An application B<MUST NOT> free the *B<data> pointer (or any other pointers
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returned by these functions) with OPENSSL_free() as freeing is handled
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automatically by the error library.
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=head1 RETURN VALUES
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The error code, or 0 if there is no error in the queue.
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=head1 SEE ALSO
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L<ERR_error_string(3)>,
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L<ERR_GET_LIB(3)>
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=head1 HISTORY
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ERR_get_error_func(), ERR_peek_error_func(), ERR_peek_last_error_func(),
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ERR_get_error_data(), ERR_peek_error_data(), ERR_peek_last_error_data(),
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ERR_get_error_all(), ERR_peek_error_all() and ERR_peek_last_error_all()
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were added in OpenSSL 3.0.
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ERR_get_error_line_data(), ERR_peek_error_line_data() and
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ERR_peek_last_error_line_data() became deprecated in OpenSSL 3.0.
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=head1 COPYRIGHT
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Copyright 2000-2017 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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