1ERR_GET_LIB(3)                      OpenSSL                     ERR_GET_LIB(3)
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NAME

6       ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON - get library, function and
7       reason code
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SYNOPSIS

10        #include <openssl/err.h>
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12        int ERR_GET_LIB(unsigned long e);
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14        int ERR_GET_FUNC(unsigned long e);
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16        int ERR_GET_REASON(unsigned long e);
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DESCRIPTION

19       The error code returned by ERR_get_error() consists of a library
20       number, function code and reason code. ERR_GET_LIB(), ERR_GET_FUNC()
21       and ERR_GET_REASON() can be used to extract these.
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23       The library number and function code describe where the error occurred,
24       the reason code is the information about what went wrong.
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26       Each sub-library of OpenSSL has a unique library number; function and
27       reason codes are unique within each sub-library.  Note that different
28       libraries may use the same value to signal different functions and
29       reasons.
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31       ERR_R_... reason codes such as ERR_R_MALLOC_FAILURE are globally
32       unique. However, when checking for sub-library specific reason codes,
33       be sure to also compare the library number.
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35       ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are macros.
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RETURN VALUES

38       The library number, function code and reason code respectively.
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SEE ALSO

41       err(3), ERR_get_error(3)
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HISTORY

44       ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are available in all
45       versions of SSLeay and OpenSSL.
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491.0.2o                            2020-08-01                    ERR_GET_LIB(3)