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- /*
- * Copyright (c) 1982, 1986 The Regents of the University of California.
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
- *
- * @(#)uio.h 7.8 (Berkeley) 4/15/91
- */
-
- #ifndef _UIO_H_
- #define _UIO_H_
-
- struct iovec {
- caddr_t iov_base;
- int iov_len;
- };
-
- enum uio_rw { UIO_READ, UIO_WRITE };
-
- /*
- * Segment flag values.
- */
- enum uio_seg {
- UIO_USERSPACE, /* from user data space */
- UIO_SYSSPACE, /* from system space */
- UIO_USERISPACE /* from user I space */
- };
-
- struct uio {
- struct iovec *uio_iov;
- int uio_iovcnt;
- off_t uio_offset;
- int uio_resid;
- enum uio_seg uio_segflg;
- enum uio_rw uio_rw;
- struct proc *uio_procp;
- };
-
- /*
- * Limits
- */
- #define UIO_MAXIOV 1024 /* max 1K of iov's */
- #define UIO_SMALLIOV 8 /* 8 on stack, else malloc */
-
- #ifndef KERNEL
-
- #include <sys/cdefs.h>
-
- __BEGIN_DECLS
- int readv __P((int, const struct iovec *, int));
- int writev __P((int, const struct iovec *, int));
- __END_DECLS
-
- #endif /* !KERNEL */
-
- #endif /* !_UIO_H_ */
-