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Command: ERR_GET_LIB | Section: 3 | Source: OpenBSD | File: ERR_GET_LIB.3
ERR_GET_LIB(3) FreeBSD Library Functions Manual ERR_GET_LIB(3)
NAME
ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON, ERR_FATAL_ERROR - get library,
function and reason codes for OpenSSL errors
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);
int
ERR_FATAL_ERROR(unsigned long e);
DESCRIPTION
The error code returned by ERR_get_error(3) 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,
whereas 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_FATAL_ERROR() indicates whether a given error code is a fatal error.
These functions are implemented as macros.
RETURN VALUES
ERR_GET_LIB(), ERR_GET_FUNC(), and ERR_GET_REASON() return the library
number, function code, and reason code, respectively.
ERR_FATAL_ERROR() returns non-zero if the error is fatal or 0 otherwise.
SEE ALSO
ERR(3), ERR_get_error(3)
HISTORY
ERR_GET_LIB(), ERR_GET_FUNC(), ERR_GET_REASON(), and ERR_FATAL_ERROR()
first appeared in SSLeay 0.4.4 and have been available since OpenBSD 2.4.
FreeBSD 14.1-RELEASE-p8 March 27, 2018 FreeBSD 14.1-RELEASE-p8