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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

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

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*
    2  * Mach Operating System
    3  * Copyright (c) 1991 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  *
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  *
   16  * Carnegie Mellon requests users of this software to return to
   17  *
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  *
   23  * any improvements or extensions that they make and grant Carnegie Mellon rights
   24  * to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        ioctl.h,v $
   29  * Revision 2.6  92/05/21  17:25:06  jfriedl
   30  *      Appended 'U' to constants that would otherwise be signed.
   31  *      [92/05/16            jfriedl]
   32  * 
   33  * Revision 2.5  91/10/09  16:18:46  af
   34  *       Revision 2.4.1.1  91/09/01  15:53:00  af
   35  *              Upgraded to BSD 4.4.
   36  *              [91/09/01            af]
   37  * 
   38  * Revision 2.4.1.1  91/09/01  15:53:00  af
   39  *      Upgraded to BSD 4.4.
   40  *      [91/09/01            af]
   41  * 
   42  * Revision 2.4  91/05/14  17:40:04  mrt
   43  *      Correcting copyright
   44  * 
   45  * Revision 2.3  91/03/16  15:01:35  rpd
   46  *      Fixed the definitions for ANSI C.
   47  *      [91/02/20            rpd]
   48  * 
   49  * Revision 2.2  91/02/14  15:04:02  mrt
   50  *      Changed to new Mach copyright
   51  * 
   52  * 
   53  */
   54 /*
   55  * Format definitions for 'ioctl' commands in device definitions.
   56  *
   57  * From BSD4.4.
   58  */
   59 
   60 #ifndef _SYS_IOCTL_H_
   61 #define _SYS_IOCTL_H_
   62 /*
   63  * Ioctl's have the command encoded in the lower word, and the size of
   64  * any in or out parameters in the upper word.  The high 3 bits of the
   65  * upper word are used to encode the in/out status of the parameter.
   66  */
   67 #define IOCPARM_MASK    0x1fff          /* parameter length, at most 13 bits */
   68 #define IOC_VOID        0x20000000      /* no parameters */
   69 #define IOC_OUT         0x40000000      /* copy out parameters */
   70 #define IOC_IN          0x80000000U     /* copy in parameters */
   71 #define IOC_INOUT       (IOC_IN|IOC_OUT)
   72 
   73 #define _IOC(inout,group,num,len) \
   74         (inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
   75 #define _IO(g,n)        _IOC(IOC_VOID,  (g), (n), 0)
   76 #define _IOR(g,n,t)     _IOC(IOC_OUT,   (g), (n), sizeof(t))
   77 #define _IOW(g,n,t)     _IOC(IOC_IN,    (g), (n), sizeof(t))
   78 #define _IOWR(g,n,t)    _IOC(IOC_INOUT, (g), (n), sizeof(t))
   79 
   80 #endif   _SYS_IOCTL_H_

Cache object: 40d0e89b34b93869d3b6d29a303446e7


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.