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d0cd9a5cc6
In FreeBSD the struct uio was just a typedef to uio_t. In order to extend this struct, outside of the definition for the struct uio, the struct uio has been embedded inside of a uio_t struct. Also renamed all the uio_* interfaces to be zfs_uio_* to make it clear this is a ZFS interface. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Brian Atkinson <batkinson@lanl.gov> Closes #11438
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*
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* Copyright (c) 2010 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _OPENSOLARIS_SYS_UIO_H_
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#define _OPENSOLARIS_SYS_UIO_H_
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#ifndef _STANDALONE
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#include_next <sys/uio.h>
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#include <sys/_uio.h>
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#include <sys/debug.h>
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typedef struct iovec iovec_t;
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typedef enum uio_seg zfs_uio_seg_t;
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typedef enum uio_rw zfs_uio_rw_t;
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typedef struct zfs_uio {
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struct uio *uio;
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} zfs_uio_t;
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#define GET_UIO_STRUCT(u) (u)->uio
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#define zfs_uio_segflg(u) GET_UIO_STRUCT(u)->uio_segflg
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#define zfs_uio_offset(u) GET_UIO_STRUCT(u)->uio_offset
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#define zfs_uio_resid(u) GET_UIO_STRUCT(u)->uio_resid
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#define zfs_uio_iovcnt(u) GET_UIO_STRUCT(u)->uio_iovcnt
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#define zfs_uio_iovlen(u, idx) GET_UIO_STRUCT(u)->uio_iov[(idx)].iov_len
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#define zfs_uio_iovbase(u, idx) GET_UIO_STRUCT(u)->uio_iov[(idx)].iov_base
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#define zfs_uio_td(u) GET_UIO_STRUCT(u)->uio_td
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#define zfs_uio_rw(u) GET_UIO_STRUCT(u)->uio_rw
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#define zfs_uio_fault_disable(u, set)
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#define zfs_uio_prefaultpages(size, u) (0)
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static __inline void
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zfs_uio_init(zfs_uio_t *uio, struct uio *uio_s)
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{
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GET_UIO_STRUCT(uio) = uio_s;
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}
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static __inline void
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zfs_uio_setoffset(zfs_uio_t *uio, offset_t off)
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{
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zfs_uio_offset(uio) = off;
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}
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static __inline 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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ASSERT(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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int zfs_uiocopy(void *p, size_t n, zfs_uio_rw_t rw, zfs_uio_t *uio,
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size_t *cbytes);
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void zfs_uioskip(zfs_uio_t *uiop, size_t n);
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int zfs_uio_fault_move(void *p, size_t n, zfs_uio_rw_t dir, zfs_uio_t *uio);
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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 void
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zfs_uio_advance(zfs_uio_t *uio, size_t size)
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{
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zfs_uio_resid(uio) -= size;
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zfs_uio_offset(uio) += size;
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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 /* !_STANDALONE */
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#endif /* !_OPENSOLARIS_SYS_UIO_H_ */
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