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  * $FreeBSD$
   38  */
   39 
   40 #ifndef _SYS_FILIO_H_
   41 #define _SYS_FILIO_H_
   42 
   43 #include <sys/_types.h>
   44 #include <sys/ioccom.h>
   45 
   46 /* Generic file-descriptor ioctl's. */
   47 #define FIOCLEX          _IO('f', 1)            /* set close on exec on fd */
   48 #define FIONCLEX         _IO('f', 2)            /* remove close on exec */
   49 #define FIONREAD        _IOR('f', 127, int)     /* get # bytes to read */
   50 #define FIONBIO         _IOW('f', 126, int)     /* set/clear non-blocking i/o */
   51 #define FIOASYNC        _IOW('f', 125, int)     /* set/clear async i/o */
   52 #define FIOSETOWN       _IOW('f', 124, int)     /* set owner */
   53 #define FIOGETOWN       _IOR('f', 123, int)     /* get owner */
   54 #define FIODTYPE        _IOR('f', 122, int)     /* get d_flags type part */
   55 #define FIOGETLBA       _IOR('f', 121, int)     /* get start blk # */
   56 struct fiodgname_arg {
   57         int     len;
   58         void    *buf;
   59 };
   60 #define FIODGNAME       _IOW('f', 120, struct fiodgname_arg) /* get dev. name */
   61 #define FIONWRITE       _IOR('f', 119, int)     /* get # bytes (yet) to write */
   62 #define FIONSPACE       _IOR('f', 118, int)     /* get space in send queue */
   63 /* Handle lseek SEEK_DATA and SEEK_HOLE for holey file knowledge. */
   64 #define FIOSEEKDATA     _IOWR('f', 97, off_t)   /* SEEK_DATA */
   65 #define FIOSEEKHOLE     _IOWR('f', 98, off_t)   /* SEEK_HOLE */
   66 struct fiobmap2_arg {
   67         __daddr_t       bn;
   68         int             runp;
   69         int             runb;
   70 };
   71 /* Get the file's bmap info for the logical block bn. */
   72 #define FIOBMAP2        _IOWR('f', 99, struct fiobmap2_arg)
   73 /* POSIX shm largepage set/get config */
   74 #define FIOSSHMLPGCNF   _IOW('f', 100, struct shm_largepage_conf)
   75 #define FIOGSHMLPGCNF   _IOR('f', 101, struct shm_largepage_conf)
   76 
   77 #ifdef _KERNEL
   78 #ifdef COMPAT_FREEBSD32
   79 struct fiodgname_arg32 {
   80         int             len;
   81         uint32_t        buf;    /* (void *) */
   82 };
   83 #define FIODGNAME_32    _IOC_NEWTYPE(FIODGNAME, struct fiodgname_arg32)
   84 #endif
   85 
   86 void    *fiodgname_buf_get_ptr(void *fgnp, u_long com);
   87 #endif
   88 
   89 #endif /* !_SYS_FILIO_H_ */

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