ERR_get_error, ERR_peek_error, ERR_get_error_line,
ERR_peek_error_line, ERR_get_error_line_data,
ERR_peek_error_line_data - obtain error code and data
SYNOPSIS
#include <openssl/err.h>
unsigned long ERR_get_error(void);
unsigned long ERR_peek_error(void);
unsigned long ERR_get_error_line(const char **file, int *line);
unsigned long ERR_peek_error_line(const char **file, int *line);
unsigned long ERR_get_error_line_data(const char **file, int *line,
const char **data, int *flags);
unsigned long ERR_peek_error_line_data(const char **file, int *line,
const char **data, int *flags);
DESCRIPTION
ERR_get_error() returns the last error code from the
thread's error queue and removes the entry. This function
can be called repeatedly until there are no more error
codes to return.
ERR_peek_error() returns the last error code from the
thread's error queue without modifying it.
See ERR_GET_LIB(3) for obtaining information about
location and reason of the error, and ERR_error_string(3)
for human-readable error messages.
ERR_get_error_line() and ERR_peek_error_line() are the
same as the above, but they additionally store the file
name and line number where the error occurred in *file and
*line, unless these are NULL.
ERR_get_error_line_data() and ERR_peek_error_line_data()
store additional data and flags associated with the error
code in *data and *flags, unless these are NULL. *data
contains a string if *flags&ERR_TXT_STRING. If it has been
allocated by OPENSSL_malloc(), *flags&ERR_TXT_MALLOCED is
true.
RETURN VALUES
The error code, or 0 if there is no error in the queue.
SEE ALSO
err(3), ERR_error_string(3), ERR_GET_LIB(3)
HISTORY
ERR_get_error(), ERR_peek_error(), ERR_get_error_line()
and ERR_peek_error_line() are available in all versions of
ERR_peek_error_line_data() were added in SSLeay 0.9.0.
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