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Title "ERR_GET_LIB 3" C \s-1ERR_GET_LIB\s0, \s-1ERR_GET_FUNC\s0, \s-1ERR_GET_REASON\s0 - get library, function and reason code Header "SYNOPSIS" .Vb 1 #include <openssl/err.h> .Ve .Vb 1 int ERR_GET_LIB(unsigned long e); .Ve .Vb 1 int ERR_GET_FUNC(unsigned long e); .Ve .Vb 1 int ERR_GET_REASON(unsigned long e); .Ve Header "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.

\fB\s-1ERR_R_\s0... reason codes such as \s-1ERR_R_MALLOC_FAILURE\s0 are globally unique. However, when checking for sub-library specific reason codes, be sure to also compare the library number.

\fIERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are macros.

Header "RETURN VALUES" The library number, function code and reason code respectively. Header "SEE ALSO" err(3), ERR_get_error(3) Header "HISTORY" \fIERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are available in all versions of SSLeay and OpenSSL.