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129 .\" ========================================================================
131 .IX Title "ERR_GET_LIB 3"
132 .TH ERR_GET_LIB 3 "2018-09-11" "1.1.1" "OpenSSL"
133 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
134 .\" way too many mistakes in technical documents.
138 ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON, ERR_FATAL_ERROR \&\- get information from error codes
140 .IX Header "SYNOPSIS"
142 \& #include <openssl/err.h>
144 \& int ERR_GET_LIB(unsigned long e);
146 \& int ERR_GET_FUNC(unsigned long e);
148 \& int ERR_GET_REASON(unsigned long e);
150 \& int ERR_FATAL_ERROR(unsigned long e);
153 .IX Header "DESCRIPTION"
154 The error code returned by \fIERR_get_error()\fR consists of a library
155 number, function code and reason code. \s-1\fIERR_GET_LIB\s0()\fR, \s-1\fIERR_GET_FUNC\s0()\fR
156 and \s-1\fIERR_GET_REASON\s0()\fR can be used to extract these.
158 \&\s-1\fIERR_FATAL_ERROR\s0()\fR indicates whether a given error code is a fatal error.
160 The library number and function code describe where the error
161 occurred, the reason code is the information about what went wrong.
163 Each sub-library of OpenSSL has a unique library number; function and
164 reason codes are unique within each sub-library. Note that different
165 libraries may use the same value to signal different functions and
168 \&\fB\s-1ERR_R_...\s0\fR reason codes such as \fB\s-1ERR_R_MALLOC_FAILURE\s0\fR are globally
169 unique. However, when checking for sub-library specific reason codes,
170 be sure to also compare the library number.
172 \&\s-1\fIERR_GET_LIB\s0()\fR, \s-1\fIERR_GET_FUNC\s0()\fR, \s-1\fIERR_GET_REASON\s0()\fR, and \s-1\fIERR_FATAL_ERROR\s0()\fR
175 .IX Header "RETURN VALUES"
176 The library number, function code, reason code, and whether the error
177 is fatal, respectively.
179 .IX Header "SEE ALSO"
180 \&\fIERR_get_error\fR\|(3)
183 \&\s-1\fIERR_GET_LIB\s0()\fR, \s-1\fIERR_GET_FUNC\s0()\fR and \s-1\fIERR_GET_REASON\s0()\fR are available in
184 all versions of OpenSSL.
186 .IX Header "COPYRIGHT"
187 Copyright 2000\-2017 The OpenSSL Project Authors. All Rights Reserved.
189 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
190 this file except in compliance with the License. You can obtain a copy
191 in the file \s-1LICENSE\s0 in the source distribution or at
192 <https://www.openssl.org/source/license.html>.