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134 .\" ========================================================================
136 .IX Title "ERR_get_error 3"
137 .TH ERR_get_error 3 "2002-11-29" "1.1.0-dev" "OpenSSL"
138 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
139 .\" way too many mistakes in technical documents.
143 ERR_get_error, ERR_peek_error, ERR_peek_last_error,
144 ERR_get_error_line, ERR_peek_error_line, ERR_peek_last_error_line,
145 ERR_get_error_line_data, ERR_peek_error_line_data,
146 ERR_peek_last_error_line_data \- obtain error code and data
150 .IX Header "SYNOPSIS"
152 \& #include <openssl/err.h>
154 \& unsigned long ERR_get_error(void);
155 \& unsigned long ERR_peek_error(void);
156 \& unsigned long ERR_peek_last_error(void);
158 \& unsigned long ERR_get_error_line(const char **file, int *line);
159 \& unsigned long ERR_peek_error_line(const char **file, int *line);
160 \& unsigned long ERR_peek_last_error_line(const char **file, int *line);
162 \& unsigned long ERR_get_error_line_data(const char **file, int *line,
163 \& const char **data, int *flags);
164 \& unsigned long ERR_peek_error_line_data(const char **file, int *line,
165 \& const char **data, int *flags);
166 \& unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
167 \& const char **data, int *flags);
170 .IX Header "DESCRIPTION"
171 \&\fIERR_get_error()\fR returns the earliest error code from the thread's error
172 queue and removes the entry. This function can be called repeatedly
173 until there are no more error codes to return.
175 \&\fIERR_peek_error()\fR returns the earliest error code from the thread's
176 error queue without modifying it.
178 \&\fIERR_peek_last_error()\fR returns the latest error code from the thread's
179 error queue without modifying it.
181 See \s-1\fIERR_GET_LIB\s0\fR\|(3) for obtaining information about
182 location and reason of the error, and
183 \&\fIERR_error_string\fR\|(3) for human-readable error
186 \&\fIERR_get_error_line()\fR, \fIERR_peek_error_line()\fR and
187 \&\fIERR_peek_last_error_line()\fR are the same as the above, but they
188 additionally store the file name and line number where
189 the error occurred in *\fBfile\fR and *\fBline\fR, unless these are \fB\s-1NULL\s0\fR.
191 \&\fIERR_get_error_line_data()\fR, \fIERR_peek_error_line_data()\fR and
192 \&\fIERR_get_last_error_line_data()\fR store additional data and flags
193 associated with the error code in *\fBdata\fR
194 and *\fBflags\fR, unless these are \fB\s-1NULL\s0\fR. *\fBdata\fR contains a string
195 if *\fBflags\fR&\fB\s-1ERR_TXT_STRING\s0\fR. If it has been allocated by \fIOPENSSL_malloc()\fR,
196 *\fBflags\fR&\fB\s-1ERR_TXT_MALLOCED\s0\fR is true.
198 .IX Header "RETURN VALUES"
199 The error code, or 0 if there is no error in the queue.
201 .IX Header "SEE ALSO"
202 \&\fIopenssl_err\fR\|(3), \fIERR_error_string\fR\|(3),
203 \&\s-1\fIERR_GET_LIB\s0\fR\|(3)
206 \&\fIERR_get_error()\fR, \fIERR_peek_error()\fR, \fIERR_get_error_line()\fR and
207 \&\fIERR_peek_error_line()\fR are available in all versions of SSLeay and
208 OpenSSL. \fIERR_get_error_line_data()\fR and \fIERR_peek_error_line_data()\fR
209 were added in SSLeay 0.9.0.
210 \&\fIERR_peek_last_error()\fR, \fIERR_peek_last_error_line()\fR and
211 \&\fIERR_peek_last_error_line_data()\fR were added in OpenSSL 0.9.7.