193 lines
5.4 KiB
Groff
193 lines
5.4 KiB
Groff
.\" $NetBSD: ERR_GET_LIB.3,v 1.5 2001/04/12 10:45:37 itojun Exp $
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.\" Thu Apr 12 19:26:56 2001
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.\" ======================================================================
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.\"
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.IX Title "ERR_GET_LIB 3"
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.TH ERR_GET_LIB 3 "0.9.6a" "2000-07-22" "OpenSSL"
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.UC
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.SH "NAME"
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\&\s-1ERR_GET_LIB\s0, \s-1ERR_GET_FUNC\s0, \s-1ERR_GET_REASON\s0 \- get library, function and
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reason code
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.SH "LIBRARY"
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libcrypto, -lcrypto
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/err.h>
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.Ve
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.Vb 1
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\& int ERR_GET_LIB(unsigned long e);
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.Ve
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.Vb 1
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\& int ERR_GET_FUNC(unsigned long e);
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.Ve
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.Vb 1
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\& int ERR_GET_REASON(unsigned long e);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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The error code returned by \fIERR_get_error()\fR consists of a library
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number, function code and reason code. \fIERR_GET_LIB()\fR, \fIERR_GET_FUNC()\fR
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and \fIERR_GET_REASON()\fR can be used to extract these.
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.PP
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The library number and function code describe where the error
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occurred, the reason code is the information about what went wrong.
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.PP
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Each sub-library of OpenSSL has a unique library number; function and
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reason codes are unique within each sub-library. Note that different
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libraries may use the same value to signal different functions and
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reasons.
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.PP
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\&\fB\s-1ERR_R_\s0...\fR reason codes such as \fB\s-1ERR_R_MALLOC_FAILURE\s0\fR are globally
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unique. However, when checking for sub-library specific reason codes,
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be sure to also compare the library number.
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.PP
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\&\fIERR_GET_LIB()\fR, \fIERR_GET_FUNC()\fR and \fIERR_GET_REASON()\fR are macros.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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The library number, function code and reason code respectively.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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openssl_err(3), ERR_get_error(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\fIERR_GET_LIB()\fR, \fIERR_GET_FUNC()\fR and \fIERR_GET_REASON()\fR are available in
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all versions of SSLeay and OpenSSL.
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