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ERR_get_error.3
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.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32 .\" .\" Standard preamble: .\" ======================================================================== .de Sh \" Subsection heading .br .if t .Sp .ne 5 .PP \fB\\$1\fR .PP .. .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. | will give a .\" real vertical bar. \*(C+ will give a nicer C++. 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This function can be called repeatedly until there are no more error codes to return. .PP \&\fIERR_peek_error()\fR returns the earliest error code from the thread's error queue without modifying it. .PP \&\fIERR_peek_last_error()\fR returns the latest error code from the thread's error queue without modifying it. .PP See \s-1\fIERR_GET_LIB\s0\fR\|(3) for obtaining information about location and reason of the error, and \&\fIERR_error_string\fR\|(3) for human-readable error messages. .PP \&\fIERR_get_error_line()\fR, \fIERR_peek_error_line()\fR and \&\fIERR_peek_last_error_line()\fR are the same as the above, but they additionally store the file name and line number where the error occurred in *\fBfile\fR and *\fBline\fR, unless these are \fB\s-1NULL\s0\fR. .PP \&\fIERR_get_error_line_data()\fR, \fIERR_peek_error_line_data()\fR and \&\fIERR_peek_last_error_line_data()\fR store additional data and flags associated with the error code in *\fBdata\fR and *\fBflags\fR, unless these are \fB\s-1NULL\s0\fR. *\fBdata\fR contains a string if *\fBflags\fR&\fB\s-1ERR_TXT_STRING\s0\fR is true. .PP An application \fB\s-1MUST\s0 \s-1NOT\s0\fR free the *\fBdata\fR pointer (or any other pointers returned by these functions) with \fIOPENSSL_free()\fR as freeing is handled automatically by the error library. .SH "RETURN VALUES" .IX Header "RETURN VALUES" The error code, or 0 if there is no error in the queue. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fIerr\fR\|(3), \fIERR_error_string\fR\|(3), \&\s-1\fIERR_GET_LIB\s0\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fIERR_get_error()\fR, \fIERR_peek_error()\fR, \fIERR_get_error_line()\fR and \&\fIERR_peek_error_line()\fR are available in all versions of SSLeay and OpenSSL. \fIERR_get_error_line_data()\fR and \fIERR_peek_error_line_data()\fR were added in SSLeay 0.9.0. \&\fIERR_peek_last_error()\fR, \fIERR_peek_last_error_line()\fR and \&\fIERR_peek_last_error_line_data()\fR were added in OpenSSL 0.9.7.