ERR_GET_LIB.3ssl - Man Page

get information from error codes


 #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);

 int ERR_FATAL_ERROR(unsigned long e);


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.

ERR_FATAL_ERROR() indicates whether a given error code is a fatal error.

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.

are macros.

Return Values

The library number, function code, reason code, and whether the error is fatal, respectively.

See Also



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

Referenced By

ERR_get_error.3ssl(3), PEM_read.3ssl(3).

The man pages ERR_FATAL_ERROR.3ssl(3), ERR_GET_FUNC.3ssl(3) and ERR_GET_REASON.3ssl(3) are aliases of ERR_GET_LIB.3ssl(3).

2022-07-21 1.1.1q OpenSSL