Unix/ventoy_unix_src/DragonFly/vfs/tmpfs/tmpfs_mount.h

   1 /*      $NetBSD: tmpfs_args.h,v 1.3 2008/07/29 09:10:09 pooka Exp $     */
   2 /*      $DragonFly: tmpfs_mount.h,v 1.3 2017/10/29 09:10:09 markuspf Exp $      */
   3
   4 /*
   5  * Copyright (c) 2005, 2006, 2007 The NetBSD Foundation, Inc.
   6  * All rights reserved.
   7  *
   8  * This code is derived from software contributed to The NetBSD Foundation
   9  * by Julio M. Merino Vidal, developed as part of Google's Summer of Code
  10  * 2005 program.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifndef VFS_TMPFS_TMPFS_MOUNT_H_
  35 #define VFS_TMPFS_TMPFS_MOUNT_H_
  36
  37 /*
  38  * This structure is used to communicate mount parameters between userland
  39  * and kernel space.
  40  */
  41 #define TMPFS_ARGS_VERSION      2
  42 struct tmpfs_mount_info {
  43         int                     ta_version;
  44
  45         /* Size counters. */
  46         ino_t                   ta_nodes_max;
  47         off_t                   ta_size_max;
  48         size_t                  ta_maxfsize_max;
  49
  50         /* Root node attributes. */
  51         uid_t                   ta_root_uid;
  52         gid_t                   ta_root_gid;
  53         mode_t                  ta_root_mode;
  54 };
  55
  56 #define MNT_GID         0x00000001
  57 #define MNT_UID         0x00000002
  58 #define MNT_MODE        0x00000004
  59 #define MNT_INODES      0x00000008
  60 #define MNT_SIZE        0x00000010
  61 #define MNT_MAXFSIZE    0x00000020
  62
  63 #endif /* VFS_TMPFS_TMPFS_MOUNT_H_ */