FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/os/freebsd/spl/sys/uio.h

     /*
      * Copyright (c) 2010 Pawel Jakub Dawidek <pjd@FreeBSD.org>
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS 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 AUTHORS OR 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _OPENSOLARIS_SYS_UIO_H_
    #define _OPENSOLARIS_SYS_UIO_H_
    
    #ifndef _STANDALONE
    
    #include_next <sys/uio.h>
    #include <sys/_uio.h>
    #include <sys/debug.h>
    
    typedef struct iovec    iovec_t;
    typedef enum uio_seg    zfs_uio_seg_t;
    typedef enum uio_rw     zfs_uio_rw_t;
    
    typedef struct zfs_uio {
            struct uio      *uio;
    } zfs_uio_t;
    
    #define GET_UIO_STRUCT(u)       (u)->uio
    #define zfs_uio_segflg(u)       GET_UIO_STRUCT(u)->uio_segflg
    #define zfs_uio_offset(u)       GET_UIO_STRUCT(u)->uio_offset
    #define zfs_uio_resid(u)        GET_UIO_STRUCT(u)->uio_resid
    #define zfs_uio_iovcnt(u)       GET_UIO_STRUCT(u)->uio_iovcnt
    #define zfs_uio_iovlen(u, idx)  GET_UIO_STRUCT(u)->uio_iov[(idx)].iov_len
    #define zfs_uio_iovbase(u, idx) GET_UIO_STRUCT(u)->uio_iov[(idx)].iov_base
    #define zfs_uio_td(u)           GET_UIO_STRUCT(u)->uio_td
    #define zfs_uio_rw(u)           GET_UIO_STRUCT(u)->uio_rw
    #define zfs_uio_fault_disable(u, set)
    #define zfs_uio_prefaultpages(size, u)  (0)
    
    static inline void
    zfs_uio_setoffset(zfs_uio_t *uio, offset_t off)
    {
            zfs_uio_offset(uio) = off;
    }
    
    static inline void
    zfs_uio_advance(zfs_uio_t *uio, size_t size)
    {
            zfs_uio_resid(uio) -= size;
            zfs_uio_offset(uio) += size;
    }
    
    static __inline void
    zfs_uio_init(zfs_uio_t *uio, struct uio *uio_s)
    {
            GET_UIO_STRUCT(uio) = uio_s;
    }
    
    int zfs_uio_fault_move(void *p, size_t n, zfs_uio_rw_t dir, zfs_uio_t *uio);
    
    #endif /* !_STANDALONE */
    
    #endif  /* !_OPENSOLARIS_SYS_UIO_H_ */

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