ERR_GET_LIB(3)             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.

Linux 6.13.7-arch1-1            March 27, 2018            Linux 6.13.7-arch1-1