The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/filio.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1982, 1986, 1990, 1993, 1994
    5  *      The Regents of the University of California.  All rights reserved.
    6  * (c) UNIX System Laboratories, Inc.
    7  * All or some portions of this file are derived from material licensed
    8  * to the University of California by American Telephone and Telegraph
    9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
   10  * the permission of UNIX System Laboratories, Inc.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  * 3. Neither the name of the University nor the names of its contributors
   21  *    may be used to endorse or promote products derived from this software
   22  *    without specific prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  *      @(#)filio.h     8.1 (Berkeley) 3/28/94
   37  * $FreeBSD: stable/12/sys/sys/filio.h 326023 2017-11-20 19:43:44Z pfg $
   38  */
   39 
   40 #ifndef _SYS_FILIO_H_
   41 #define _SYS_FILIO_H_
   42 
   43 #include <sys/ioccom.h>
   44 
   45 /* Generic file-descriptor ioctl's. */
   46 #define FIOCLEX          _IO('f', 1)            /* set close on exec on fd */
   47 #define FIONCLEX         _IO('f', 2)            /* remove close on exec */
   48 #define FIONREAD        _IOR('f', 127, int)     /* get # bytes to read */
   49 #define FIONBIO         _IOW('f', 126, int)     /* set/clear non-blocking i/o */
   50 #define FIOASYNC        _IOW('f', 125, int)     /* set/clear async i/o */
   51 #define FIOSETOWN       _IOW('f', 124, int)     /* set owner */
   52 #define FIOGETOWN       _IOR('f', 123, int)     /* get owner */
   53 #define FIODTYPE        _IOR('f', 122, int)     /* get d_flags type part */
   54 #define FIOGETLBA       _IOR('f', 121, int)     /* get start blk # */
   55 struct fiodgname_arg {
   56         int     len;
   57         void    *buf;
   58 };
   59 #define FIODGNAME       _IOW('f', 120, struct fiodgname_arg) /* get dev. name */
   60 #define FIONWRITE       _IOR('f', 119, int)     /* get # bytes (yet) to write */
   61 #define FIONSPACE       _IOR('f', 118, int)     /* get space in send queue */
   62 /* Handle lseek SEEK_DATA and SEEK_HOLE for holey file knowledge. */
   63 #define FIOSEEKDATA     _IOWR('f', 97, off_t)   /* SEEK_DATA */
   64 #define FIOSEEKHOLE     _IOWR('f', 98, off_t)   /* SEEK_HOLE */
   65 
   66 #endif /* !_SYS_FILIO_H_ */

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