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/vfs/hammer/hammer_mount.h

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    1 /*
    2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
    3  * 
    4  * This code is derived from software contributed to The DragonFly Project
    5  * by Matthew Dillon <dillon@backplane.com>
    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/vfs/hammer/hammer_mount.h,v 1.11 2008/09/17 21:44:20 dillon Exp $
   35  */
   36 
   37 #ifndef _SYS_TYPES_H_
   38 #include <sys/types.h>
   39 #endif
   40 #ifndef _SYS_MOUNT_H_
   41 #include <sys/mount.h>
   42 #endif
   43 
   44 /*
   45  * This structure is passed from userland to the kernel during the mount
   46  * system call.
   47  */
   48 struct hammer_mount_info {
   49         const char      **volumes;      /* array of pointers to device names */
   50         int             nvolumes;       /* number of devices */
   51         int             hflags;         /* extended hammer mount flags */
   52         int             master_id;      /* -1=no-mirror mode, or 0-15 */
   53         u_int64_t       asof;           /* asof - HAMMER_MAX_TID is current */
   54         char            reserved1[136]; /* was struct export_args */
   55         u_int64_t       reserved2[15];
   56 };
   57 
   58 #define HMNT_NOHISTORY  0x00000001
   59 #define HMNT_MASTERID   0x00000002      /* master_id field set */
   60 #define HMNT_EXPORTREQ  0x00000004
   61 #define HMNT_UNDO_DIRTY 0x00000008
   62 
   63 #define HMNT_USERFLAGS  (HMNT_NOHISTORY | HMNT_MASTERID)
   64 

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