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135 .\" ========================================================================
137 .IX Title "ERR_GET_LIB 3"
138 .TH ERR_GET_LIB 3 "2009-07-19" "1.0.1n" "OpenSSL"
139 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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144 ERR_GET_LIB, ERR_GET_FUNC, ERR_GET_REASON \- get library, function and
149 .IX Header "SYNOPSIS"
151 \& #include <openssl/err.h>
153 \& int ERR_GET_LIB(unsigned long e);
155 \& int ERR_GET_FUNC(unsigned long e);
157 \& int ERR_GET_REASON(unsigned long e);
160 .IX Header "DESCRIPTION"
161 The error code returned by \fIERR_get_error()\fR consists of a library
162 number, function code and reason code. \s-1\fIERR_GET_LIB\s0()\fR, \s-1\fIERR_GET_FUNC\s0()\fR
163 and \s-1\fIERR_GET_REASON\s0()\fR can be used to extract these.
165 The library number and function code describe where the error
166 occurred, the reason code is the information about what went wrong.
168 Each sub-library of OpenSSL has a unique library number; function and
169 reason codes are unique within each sub-library. Note that different
170 libraries may use the same value to signal different functions and
173 \&\fB\s-1ERR_R_...\s0\fR reason codes such as \fB\s-1ERR_R_MALLOC_FAILURE\s0\fR are globally
174 unique. However, when checking for sub-library specific reason codes,
175 be sure to also compare the library number.
177 \&\s-1\fIERR_GET_LIB\s0()\fR, \s-1\fIERR_GET_FUNC\s0()\fR and \s-1\fIERR_GET_REASON\s0()\fR are macros.
179 .IX Header "RETURN VALUES"
180 The library number, function code and reason code respectively.
182 .IX Header "SEE ALSO"
183 \&\fIopenssl_err\fR\|(3), \fIERR_get_error\fR\|(3)
186 \&\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
187 all versions of SSLeay and OpenSSL.