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/mapped_ioctl.h

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    1 /*
    2  * Copyright (c) 2004, 2005 The DragonFly Project.  All rights reserved.
    3  * 
    4  * This code is derived from software contributed to The DragonFly Project
    5  * by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>.
    6  * 
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in
   15  *    the documentation and/or other materials provided with the
   16  *    distribution.
   17  * 3. Neither the name of The DragonFly Project nor the names of its
   18  *    contributors may be used to endorse or promote products derived
   19  *    from this software without specific, prior written permission.
   20  * 
   21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
   25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
   27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   32  * SUCH DAMAGE.
   33  * 
   34  * $DragonFly: src/sys/sys/mapped_ioctl.h,v 1.4 2006/05/20 02:42:13 dillon Exp $
   35  */
   36 #ifndef _SYS_MAPPED_IOCTL_H_
   37 #define _SYS_MAPPED_IOCTL_H_
   38 
   39 #ifndef _SYS_TYPES_H_
   40 #include <sys/types.h>
   41 #endif
   42 #ifndef _SYS_QUEUE_H_
   43 #include <sys/queue.h>
   44 #endif
   45 #ifndef _SYS_IOCCOM_H_
   46 #include <sys/ioccom.h>
   47 #endif
   48 
   49 struct file;
   50 struct thread;
   51 struct ucred;
   52 struct ioctl_map_entry;
   53 
   54 typedef int     (ioctl_wrap_func)(struct file *, u_long, u_long, caddr_t, 
   55                                   struct ucred *);
   56 typedef u_long  (ioctl_map_func)(u_long, u_long, u_long, u_long, u_long, u_long);
   57 
   58 struct ioctl_map_range {
   59         u_long          start;          /* Start of source range; inclusive */
   60         u_long          end;            /* End of source range; inclusive */
   61         u_long          maptocmd;       /* Start of destination range */
   62         u_long          maptoend;       /* End of destination range */
   63         ioctl_wrap_func *wrapfunc;      /* Ioctl handler to use */
   64         ioctl_map_func  *mapfunc;       /* Handler to map source to dest */
   65 };
   66 
   67 #define MAPPED_IOCTL_MAPRANGE(c,e,t,r,f,m)      { (c), (e), (t), (r), (f), (m) }
   68 #define MAPPED_IOCTL_MAPF(c,t,f)                MAPPED_IOCTL_MAPRANGE((c), (c), (t), (t), (f), NULL)
   69 #define MAPPED_IOCTL_MAP(c,t)                   MAPPED_IOCTL_MAPF((c), (t), NULL)
   70 #define MAPPED_IOCTL_IO(c,f)                    MAPPED_IOCTL_MAPF((c), _IO(0, 0), (f))
   71 #define MAPPED_IOCTL_IOR(c,f,t)                 MAPPED_IOCTL_MAPF((c), _IOR(0, 0, t), (f))
   72 #define MAPPED_IOCTL_IOW(c,f,t)                 MAPPED_IOCTL_MAPF((c), _IOW(0, 0, t), (f))
   73 #define MAPPED_IOCTL_IOWR(c,f,t)                MAPPED_IOCTL_MAPF((c), _IOWR(0, 0, t), (f))
   74 
   75 struct ioctl_map {
   76         u_long mask;
   77         const char *sys;
   78         LIST_HEAD(, ioctl_map_entry) mapping;
   79 };
   80 
   81 struct ioctl_map_handler {
   82         struct ioctl_map        *map;
   83         const char              *subsys;
   84         struct ioctl_map_range  *cmd_ranges;
   85 };
   86 
   87 int mapped_ioctl(int fd, u_long com, caddr_t uspc_data,
   88                  struct ioctl_map *map, struct sysmsg *msg);
   89 int mapped_ioctl_register_handler(struct ioctl_map_handler *he);
   90 int mapped_ioctl_unregister_handler(struct ioctl_map_handler *he);
   91 
   92 #endif /* !_SYS_MAPPED_IOCTL_H_ */

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