Add Copyright and license.

Bring in two clarifying sentences from OpenSSL.

1 files changed, 54 insertions, 3 deletions

diff --git a/src/lib/libcrypto/man/BIO_read.3 b/src/lib/libcrypto/man/BIO_read.3
index f19c31ecab..896e41dd43 100644
--- a/src/lib/libcrypto/man/BIO_read.3
+++ b/src/lib/libcrypto/man/BIO_read.3
@@ -1,6 +1,54 @@
-.\"     $OpenBSD: BIO_read.3,v 1.3 2016/11/07 15:52:47 jmc Exp $
+.\"     $OpenBSD: BIO_read.3,v 1.4 2016/11/18 18:44:11 schwarze Exp $
+.\"     OpenSSL 99d63d46 Oct 26 13:56:48 2016 -0400
 .\"
-.Dd $Mdocdate: November 7 2016 $
+.\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
+.\" Copyright (c) 2000, 2016 The OpenSSL Project.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\"
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\"
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in
+.\"    the documentation and/or other materials provided with the
+.\"    distribution.
+.\"
+.\" 3. All advertising materials mentioning features or use of this
+.\"    software must display the following acknowledgment:
+.\"    "This product includes software developed by the OpenSSL Project
+.\"    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+.\"
+.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+.\"    endorse or promote products derived from this software without
+.\"    prior written permission. For written permission, please contact
+.\"    openssl-core@openssl.org.
+.\"
+.\" 5. Products derived from this software may not be called "OpenSSL"
+.\"    nor may "OpenSSL" appear in their names without prior written
+.\"    permission of the OpenSSL Project.
+.\"
+.\" 6. Redistributions of any form whatsoever must retain the following
+.\"    acknowledgment:
+.\"    "This product includes software developed by the OpenSSL Project
+.\"    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+.\" OF THE POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd $Mdocdate: November 18 2016 $
 .Dt BIO_READ 3
 .Os
 .Sh NAME
@@ -48,13 +96,14 @@ performs the BIOs "gets" operation and places the data in
 .Fa buf .
 Usually this operation will attempt to read a line of data
 from the BIO of maximum length
-.Fa len .
+.Fa len No - 1 .
 There are exceptions to this however, for example
 .Fn BIO_gets
 on a digest BIO will calculate and return the digest
 and other BIOs may not support
 .Fn BIO_gets
 at all.
+The returned string is always NUL-terminated.
 .Pp
 .Fn BIO_write
 attempts to write
@@ -108,6 +157,8 @@ read or written (if the return value is positive) or that no data
 was successfully read or written if the result is 0 or -1.
 If the return value is -2, then the operation is not implemented
 in the specific BIO type.
+The trailing NUL is not included in the length returned by
+.Fn BIO_gets .
 .Pp
 A 0 or -1 return is not necessarily an indication of an error.
 In particular when the source/sink is non-blocking or of a certain type