mirror of
https://github.com/openssl/openssl.git
synced 2024-11-21 01:15:20 +08:00
52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
|
=pod
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON - get library, function and
|
||
|
|
reason code
|
||
|
|
|
||
|
|
=head1 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);
|
||
|
|
|
||
|
|
=head1 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.
|
||
|
|
|
||
|
|
B<ERR_R_...> reason codes such as B<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.
|
||
|
|
|
||
|
|
=head1 RETURN VALUES
|
||
|
|
|
||
|
|
The library number, function code and reason code respectively.
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<err(3)|err(3)>, L<ERR_get_error(3)|ERR_get_error(3)>
|
||
|
|
|
||
|
|
=head1 HISTORY
|
||
|
|
|
||
|
|
ERR_GET_LIB(), ERR_GET_FUNC() and ERR_GET_REASON() are available in
|
||
|
|
all versions of SSLeay and OpenSSL.
|
||
|
|
|
||
|
|
=cut
|