81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*
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* Copyright (c) 1982, 1986, 1993, 1994
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* The Regents of the University of California. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* Copied from 4.4-Lite and modified for 2.11BSD. Modifications were removal
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* of prototypes, limits for dynamic allocation of iovec structs and changing
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* uio_resid to u_int from int.
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*/
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#ifndef _SYS_UIO_H_
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#define _SYS_UIO_H_
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#include "types.h"
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/*
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* XXX
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* iov_base should be a void *.
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*/
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struct iovec {
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char *iov_base; /* Base address. */
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size_t iov_len; /* Length. */
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};
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enum uio_rw { UIO_READ, UIO_WRITE };
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struct uio {
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struct iovec *uio_iov;
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int uio_iovcnt;
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off_t uio_offset;
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u_int uio_resid;
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enum uio_rw uio_rw;
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};
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#ifdef KERNEL
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/*
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* Move data to/from user space.
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*/
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int uiomove (caddr_t cp, u_int n, struct uio *uio);
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/*
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* Give next character to user as result of read.
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*/
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int ureadc (int c, struct uio *uio);
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#else /* !KERNEL */
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ssize_t readv (int fd, const struct iovec *iov, int iovcnt);
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ssize_t writev (int fd, const struct iovec *iov, int iovcnt);
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#endif /* KERNEL */
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#endif /* !_SYS_UIO_H_ */
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