Add Copyright and license.

Merge documentation of X509_up_ref(3) from OpenSSL.

1 files changed, 69 insertions, 5 deletions

diff --git a/lib/libcrypto/man/X509_new.3 b/lib/libcrypto/man/X509_new.3
index 705f4b2816d..c451485f609 100644
--- a/lib/libcrypto/man/X509_new.3
+++ b/lib/libcrypto/man/X509_new.3
@@ -1,6 +1,54 @@
-.\"	$OpenBSD: X509_new.3,v 1.3 2016/12/03 13:36:03 jmc Exp $
+.\"	$OpenBSD: X509_new.3,v 1.4 2016/12/05 18:26:16 schwarze Exp $
+.\"	OpenSSL 3a59ad98 Dec 11 00:36:06 2015 +0000
 .\"
-.Dd $Mdocdate: December 3 2016 $
+.\" This file was written by Dr. Stephen Henson <steve@openssl.org>.
+.\" Copyright (c) 2002, 2006, 2015 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: December 5 2016 $
 .Dt X509_NEW 3
 .Os
 .Sh NAME
@@ -15,24 +63,37 @@
 .Fo X509_free
 .Fa "X509 *a"
 .Fc
+.Ft int
+.Fo X509_up_ref
+.Fa "X509 *a"
+.Fc
 .Sh DESCRIPTION
 The X509 ASN.1 allocation routines allocate and free an
 .Vt X509
 structure, which represents an X509 certificate.
 .Pp
 .Fn X509_new
-allocates and initializes a X509 structure.
+allocates and initializes a X509 structure with reference count 1.
 .Pp
 .Fn X509_free
-frees up the
+decrements the reference count of the
 .Vt X509
 structure
-.Fa a .
+.Fa a
+and frees it up if the reference count reaches 0.
 If
 .Fa a
 is a
 .Dv NULL
 pointer, no action occurs.
+.Pp
+.Fn X509_up_ref
+increments the reference count of
+.Fa a .
+This function is useful if a certificate structure is being used
+by several different operations each of which will free it up after
+use: this avoids the need to duplicate the entire certificate
+structure.
 .Sh RETURN VALUES
 If the allocation fails,
 .Fn X509_new
@@ -41,6 +102,9 @@ returns
 and sets an error code that can be obtained by
 .Xr ERR_get_error 3 .
 Otherwise it returns a pointer to the newly allocated structure.
+.Pp
+.Fn X509_up_ref
+returns 1 for success or 0 for failure.
 .Sh SEE ALSO
 .Xr d2i_X509 3 ,
 .Xr ERR_get_error 3