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NAME

     ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON - get library,
     function and reason code



SYNOPSIS
      #include <openssl/err.h>

      int ERR_GET_LIB(unsigned long e);

      int ERR_GET_FUNC(unsigned long e);

      int ERR_GET_REASON(unsigned long e);




DESCRIPTION
     The error code returned by ERR_get_error() consists of a
     library number, function code and reason code.
     ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() can be
     used to extract these.

     The library number and function code describe where the
     error occurred, the reason code is the information about
     what went wrong.

     Each sub-library of OpenSSL has a unique library number;
     function and reason codes are unique within each sub-
     library.  Note that different libraries may use the same
     value to signal different functions and reasons.

     ERR_R_... reason codes such as ERR_R_MALLOC_FAILURE are
     globally unique. However, when checking for sub-library
     specific reason codes, be sure to also compare the library
     number.

     ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are
     macros.



RETURN VALUES
     The library number, function code and reason code
     respectively.



SEE ALSO
     err(3), ERR_get_error(3)



HISTORY
     ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are
     available in all versions of SSLeay and OpenSSL.









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Created 1996-2024 by Maxim Chirkov

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