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c0801bf35a
Making uio_impl.h the common header interface between Linux and FreeBSD so both OS's can share a common header file. This also helps reduce code duplication for zfs_uio_t for each OS. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Brian Atkinson <batkinson@lanl.gov> Closes #11622
69 lines
2.0 KiB
C
69 lines
2.0 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 2010 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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#ifndef _SYS_UIO_IMPL_H
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#define _SYS_UIO_IMPL_H
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#include <sys/uio.h>
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extern int zfs_uiomove(void *, size_t, zfs_uio_rw_t, zfs_uio_t *);
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extern int zfs_uiocopy(void *, size_t, zfs_uio_rw_t, zfs_uio_t *, size_t *);
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extern void zfs_uioskip(zfs_uio_t *, size_t);
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static inline void
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zfs_uio_iov_at_index(zfs_uio_t *uio, uint_t idx, void **base, uint64_t *len)
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{
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*base = zfs_uio_iovbase(uio, idx);
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*len = zfs_uio_iovlen(uio, idx);
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}
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static inline offset_t
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zfs_uio_index_at_offset(zfs_uio_t *uio, offset_t off, uint_t *vec_idx)
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{
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*vec_idx = 0;
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while (*vec_idx < zfs_uio_iovcnt(uio) &&
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off >= zfs_uio_iovlen(uio, *vec_idx)) {
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off -= zfs_uio_iovlen(uio, *vec_idx);
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(*vec_idx)++;
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}
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return (off);
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}
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#endif /* _SYS_UIO_IMPL_H */
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