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//opt/alt/openssl11/share/man/man3/ERR_peek_error.3ssl
.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28) .\" .\" Standard preamble: .\" ======================================================================== .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. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" ERR_get_error, ERR_peek_error, ERR_peek_last_error, ERR_get_error_line, ERR_peek_error_line, ERR_peek_last_error_line, ERR_get_error_line_data, ERR_peek_error_line_data, ERR_peek_last_error_line_data \- obtain error code and data .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/err.h> \& \& unsigned long ERR_get_error(void); \& unsigned long ERR_peek_error(void); \& unsigned long ERR_peek_last_error(void); \& \& unsigned long ERR_get_error_line(const char **file, int *line); \& unsigned long ERR_peek_error_line(const char **file, int *line); \& unsigned long ERR_peek_last_error_line(const char **file, int *line); \& \& unsigned long ERR_get_error_line_data(const char **file, int *line, \& const char **data, int *flags); \& unsigned long ERR_peek_error_line_data(const char **file, int *line, \& const char **data, int *flags); \& unsigned long ERR_peek_last_error_line_data(const char **file, int *line, \& const char **data, int *flags); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fIERR_get_error()\fR returns the earliest error code from the thread's error queue and removes the entry. 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 filename 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 NOT\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_error_string\fR\|(3), \&\s-1\fIERR_GET_LIB\s0\fR\|(3) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2000\-2020 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
