ERR_GET_LIB (3)

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(The comments found at the beginning of the groff file "man3/ERR_GET_LIB.3ssl".)

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. (), () and () 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.

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

(), () and () are macros.

RETURN VALUES

The library number, function code and reason code respectively.

SEE ALSO

err(3), ERR_get_error(3)

HISTORY

(), () and () are available in all versions of SSLeay and OpenSSL.