30ea570f0f
Remove reference to ERR_TXT_MALLOCED in the error library as that is
only used internally. Indicate that returned error data must not be
freed.
(cherry picked from commit f2d678e6e8)
79 lines
2.7 KiB
Text
79 lines
2.7 KiB
Text
=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_line_data, ERR_peek_error_line_data,
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ERR_peek_last_error_line_data - 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_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)|ERR_GET_LIB(3)> for obtaining information about
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location and reason of the error, and
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L<ERR_error_string(3)|ERR_error_string(3)> for human-readable error
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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 the above, but they
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additionally store the file name and line number where
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the error occurred in *B<file> and *B<line>, unless these are B<NULL>.
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ERR_get_error_line_data(), ERR_peek_error_line_data() and
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ERR_get_last_error_line_data() store additional data and flags
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associated with the error code in *B<data>
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and *B<flags>, unless these are B<NULL>. *B<data> contains a string
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if *B<flags>&B<ERR_TXT_STRING> is true.
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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(3)|err(3)>, L<ERR_error_string(3)|ERR_error_string(3)>,
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L<ERR_GET_LIB(3)|ERR_GET_LIB(3)>
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=head1 HISTORY
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ERR_get_error(), ERR_peek_error(), ERR_get_error_line() and
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ERR_peek_error_line() are available in all versions of SSLeay and
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OpenSSL. ERR_get_error_line_data() and ERR_peek_error_line_data()
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were added in SSLeay 0.9.0.
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ERR_peek_last_error(), ERR_peek_last_error_line() and
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ERR_peek_last_error_line_data() were added in OpenSSL 0.9.7.
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=cut
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