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/geom/geom_ctl.h

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    1 /*-
    2  * Copyright (c) 2003 Poul-Henning Kamp
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. The names of the authors may not be used to endorse or promote
   14  *    products derived from this software without specific prior written
   15  *    permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/8.3/sys/geom/geom_ctl.h 199583 2009-11-20 15:27:52Z jhb $
   30  */
   31 
   32 #ifndef _GEOM_GEOM_CTL_H_
   33 #define _GEOM_GEOM_CTL_H_
   34 
   35 #include <sys/ioccom.h>
   36 
   37 /*
   38  * Version number.  Used to check consistency between kernel and libgeom.
   39  */
   40 #define GCTL_VERSION    2
   41 
   42 struct gctl_req_arg {
   43         u_int                           nlen;
   44         char                            *name;
   45         off_t                           offset;
   46         int                             flag;
   47         int                             len;
   48         void                            *value;
   49         /* kernel only fields */
   50         void                            *kvalue;
   51 };
   52 
   53 #define GCTL_PARAM_RD           1       /* Must match VM_PROT_READ */
   54 #define GCTL_PARAM_WR           2       /* Must match VM_PROT_WRITE */
   55 #define GCTL_PARAM_RW           (GCTL_PARAM_RD | GCTL_PARAM_WR)
   56 #define GCTL_PARAM_ASCII        4
   57 
   58 /* These are used in the kernel only */
   59 #define GCTL_PARAM_NAMEKERNEL   8
   60 #define GCTL_PARAM_VALUEKERNEL  16
   61 #define GCTL_PARAM_CHANGED      32
   62 
   63 struct gctl_req {
   64         u_int                           version;
   65         u_int                           serial;
   66         u_int                           narg;
   67         struct gctl_req_arg             *arg;
   68         u_int                           lerror;
   69         char                            *error;
   70         struct gctl_req_table           *reqt;
   71 
   72         /* kernel only fields */
   73         int                             nerror;
   74         struct sbuf                     *serror;
   75 };
   76 
   77 #define GEOM_CTL        _IOW('G', GCTL_VERSION, struct gctl_req)
   78 
   79 #define PATH_GEOM_CTL   "geom.ctl"
   80 
   81 
   82 #endif /* _GEOM_GEOM_CTL_H_ */

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