sys/vfs/hammer/hammer_mount.h

   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 VFS_HAMMER_MOUNT_H_
  38 #define VFS_HAMMER_MOUNT_H_
  39
  40 #ifndef _SYS_TYPES_H_
  41 #include <sys/types.h>
  42 #endif
  43 #ifndef _SYS_MOUNT_H_
  44 #include <sys/mount.h>
  45 #endif
  46
  47 /*
  48  * This structure is passed from userland to the kernel during the mount
  49  * system call.
  50  */
  51 struct hammer_mount_info {
  52         char            **volumes;      /* array of pointers to device names */
  53         int             nvolumes;       /* number of devices */
  54         int             hflags;         /* extended hammer mount flags */
  55         int             master_id;      /* -1=no-mirror mode, or 0-15 */
  56         uint64_t        asof;           /* asof - HAMMER_MAX_TID is current */
  57         char            reserved1[136]; /* was struct export_args */
  58         uint64_t        reserved2[15];
  59 };
  60
  61 #define HMNT_NOHISTORY  0x00000001
  62 #define HMNT_MASTERID   0x00000002      /* master_id field set */
  63 #define HMNT_NOMIRROR   0x00000004      /* master_id field set to -1 */
  64 #define HMNT_UNDO_DIRTY 0x00000008
  65
  66 #define HMNT_USERFLAGS  (HMNT_NOHISTORY | HMNT_MASTERID | HMNT_NOMIRROR)
  67
  68 #endif /* !VFS_HAMMER_MOUNT_H_ */