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✏️ Editing: ERR_PACK.3

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.\" ========================================================================
.\"
.IX Title "ERR_LOAD_STRINGS 3"
.TH ERR_LOAD_STRINGS 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
ERR_load_strings, ERR_PACK, ERR_get_next_error_library \- load arbitrary error strings
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/err.h>
\&
\& int ERR_load_strings(int lib, ERR_STRING_DATA *str);
\&
\& int ERR_get_next_error_library(void);
\&
\& unsigned long ERR_PACK(int lib, int func, int reason);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBERR_load_strings()\fR registers error strings for library number \fBlib\fR.
.PP
\&\fBstr\fR is an array of error string data:
.PP
.Vb 5
\& typedef struct ERR_string_data_st
\& {
\&     unsigned long error;
\&     char *string;
\& } ERR_STRING_DATA;
.Ve
.PP
The error code is generated from the library number and a function and
reason code: \fBerror\fR = \s-1ERR_PACK\s0(\fBlib\fR, \fBfunc\fR, \fBreason\fR).
\&\s-1\fBERR_PACK\s0()\fR is a macro.
.PP
The last entry in the array is {0,0}.
.PP
\&\fBERR_get_next_error_library()\fR can be used to assign library numbers
to user libraries at runtime.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBERR_load_strings()\fR returns 1 for success and 0 for failure. \s-1\fBERR_PACK\s0()\fR returns the error code.
\&\fBERR_get_next_error_library()\fR returns zero on failure, otherwise a new
library number.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBERR_load_strings\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2000\-2021 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>.

MR SKB