ERR_peek_last_error(3)

ERR_get_error(3)             OpenSSL             ERR_get_error(3)

NAME

     ERR_get_error, ERR_peek_error, ERR_peek_last_error,
     ERR_get_error_line, ERR_peek_error_line,
     ERR_peek_last_error_line, ERR_get_error_line_data,
     ERR_peek_error_line_data, ERR_peek_last_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_peek_last_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_peek_last_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);
      unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
              const char **data, int *flags);

DESCRIPTION

     ERR_get_error() returns the earliest 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 earliest error code from the
     thread's error queue without modifying it.

     ERR_peek_last_error() returns the latest 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(), ERR_peek_error_line() and
     ERR_peek_last_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(), ERR_peek_error_line_data() and
     ERR_peek_last_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 is true.

1.0.2t               Last change: 2019-09-10                    1

ERR_get_error(3)             OpenSSL             ERR_get_error(3)

     An application MUST NOT free the *data pointer (or any other
     pointers returned by these functions) with OPENSSL_free() as
     freeing is handled automatically by the error library.

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
     SSLeay and OpenSSL. ERR_get_error_line_data() and
     ERR_peek_error_line_data() were added in SSLeay 0.9.0.
     ERR_peek_last_error(), ERR_peek_last_error_line() and
     ERR_peek_last_error_line_data() were added in OpenSSL 0.9.7.

1.0.2t               Last change: 2019-09-10                    2