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9f0a21e641
Add the FreeBSD platform code to the OpenZFS repository. As of this commit the source can be compiled and tested on FreeBSD 11 and 12. Subsequent commits are now required to compile on FreeBSD and Linux. Additionally, they must pass the ZFS Test Suite on FreeBSD which is being run by the CI. As of this commit 1230 tests pass on FreeBSD and there are no unexpected failures. Reviewed-by: Sean Eric Fagan <sef@ixsystems.com> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Richard Laager <rlaager@wiktel.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Co-authored-by: Ryan Moeller <ryan@iXsystems.com> Signed-off-by: Matt Macy <mmacy@FreeBSD.org> Signed-off-by: Ryan Moeller <ryan@iXsystems.com> Closes #898 Closes #8987
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
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/* All Rights Reserved */
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/*
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* University Copyright- Copyright (c) 1982, 1986, 1988
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* The Regents of the University of California
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* All Rights Reserved
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*
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* University Acknowledgment- Portions of this document are derived from
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* software developed by the University of California, Berkeley, and its
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* contributors.
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*/
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/*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <sys/vnode.h>
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/*
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* same as uiomove() but doesn't modify uio structure.
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* return in cbytes how many bytes were copied.
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*/
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int
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uiocopy(void *p, size_t n, enum uio_rw rw, struct uio *uio, size_t *cbytes)
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{
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struct iovec small_iovec[1];
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struct uio small_uio_clone;
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struct uio *uio_clone;
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int error;
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ASSERT3U(uio->uio_rw, ==, rw);
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if (uio->uio_iovcnt == 1) {
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small_uio_clone = *uio;
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small_iovec[0] = *uio->uio_iov;
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small_uio_clone.uio_iov = small_iovec;
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uio_clone = &small_uio_clone;
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} else {
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uio_clone = cloneuio(uio);
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}
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error = vn_io_fault_uiomove(p, n, uio_clone);
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*cbytes = uio->uio_resid - uio_clone->uio_resid;
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if (uio_clone != &small_uio_clone)
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free(uio_clone, M_IOV);
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return (error);
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}
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/*
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* Drop the next n chars out of *uiop.
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*/
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void
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uioskip(uio_t *uio, size_t n)
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{
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enum uio_seg segflg;
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/* For the full compatibility with illumos. */
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if (n > uio->uio_resid)
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return;
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segflg = uio->uio_segflg;
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uio->uio_segflg = UIO_NOCOPY;
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uiomove(NULL, n, uio->uio_rw, uio);
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uio->uio_segflg = segflg;
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}
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