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a10faf5ce6
This freeuio() interface was introduced to FreeBSD recently. For now it simply calls free(), so this change has no effect. However, this may not always be true, and in CheriBSD this change is required. Signed-off-by: Mark Johnston <markj@FreeBSD.org> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Brooks Davis <brooks.davis@sri.com> Reviewed-by: Tony Hutter <hutter2@llnl.gov>
118 lines
2.9 KiB
C
118 lines
2.9 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 https://opensource.org/licenses/CDDL-1.0.
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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/param.h>
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#include <sys/uio_impl.h>
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#include <sys/vnode.h>
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#include <sys/zfs_znode.h>
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static void
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zfs_freeuio(struct uio *uio)
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{
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#if __FreeBSD_version > 1500013
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freeuio(uio);
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#else
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free(uio, M_IOV);
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#endif
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}
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int
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zfs_uiomove(void *cp, size_t n, zfs_uio_rw_t dir, zfs_uio_t *uio)
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{
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ASSERT3U(zfs_uio_rw(uio), ==, dir);
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return (uiomove(cp, (int)n, GET_UIO_STRUCT(uio)));
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}
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/*
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* same as zfs_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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zfs_uiocopy(void *p, size_t n, zfs_uio_rw_t rw, zfs_uio_t *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(zfs_uio_rw(uio), ==, rw);
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if (zfs_uio_iovcnt(uio) == 1) {
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small_uio_clone = *(GET_UIO_STRUCT(uio));
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small_iovec[0] = *(GET_UIO_STRUCT(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(GET_UIO_STRUCT(uio));
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}
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error = vn_io_fault_uiomove(p, n, uio_clone);
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*cbytes = zfs_uio_resid(uio) - uio_clone->uio_resid;
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if (uio_clone != &small_uio_clone)
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zfs_freeuio(uio_clone);
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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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zfs_uioskip(zfs_uio_t *uio, size_t n)
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{
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zfs_uio_seg_t segflg;
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/* For the full compatibility with illumos. */
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if (n > zfs_uio_resid(uio))
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return;
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segflg = zfs_uio_segflg(uio);
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zfs_uio_segflg(uio) = UIO_NOCOPY;
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zfs_uiomove(NULL, n, zfs_uio_rw(uio), uio);
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zfs_uio_segflg(uio) = segflg;
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}
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int
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zfs_uio_fault_move(void *p, size_t n, zfs_uio_rw_t dir, zfs_uio_t *uio)
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{
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ASSERT3U(zfs_uio_rw(uio), ==, dir);
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return (vn_io_fault_uiomove(p, n, GET_UIO_STRUCT(uio)));
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}
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