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ERR_GET_LIB

Section: OpenSSL (3)
Updated: 2015-01-15
Index Return to Main Contents
 

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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
SEE ALSO
HISTORY


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