sys/miscfs/genfs/genfs_vfsops.c

   1 /*      $NetBSD: genfs_vfsops.c,v 1.2 2008/04/28 20:24:08 martin Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   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  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: genfs_vfsops.c,v 1.2 2008/04/28 20:24:08 martin Exp $");
  31
  32 #include <sys/types.h>
  33 #include <sys/mount.h>
  34 #include <sys/statvfs.h>
  35 #include <sys/vnode.h>
  36
  37 #include <miscfs/genfs/genfs.h>
  38 #include <miscfs/genfs/genfs_node.h>
  39
  40 int
  41 genfs_statvfs(struct mount *mp, struct statvfs *sbp)
  42 {
  43
  44         sbp->f_bsize = DEV_BSIZE;
  45         sbp->f_frsize = DEV_BSIZE;
  46         sbp->f_iosize = DEV_BSIZE;
  47         sbp->f_blocks = 2;              /* 1k to keep df happy */
  48         sbp->f_bfree = 0;
  49         sbp->f_bavail = 0;
  50         sbp->f_bresvd = 0;
  51         sbp->f_files = 0;
  52         sbp->f_ffree = 0;
  53         sbp->f_favail = 0;
  54         sbp->f_fresvd = 0;
  55         copy_statvfs_info(sbp, mp);
  56
  57         return 0;
  58 }
  59
  60 int
  61 genfs_renamelock_enter(struct mount *mp)
  62 {
  63         mutex_enter(&mp->mnt_renamelock);
  64         /* Preserve possible error return in case we become interruptible. */
  65         return 0;
  66 }
  67
  68 void
  69 genfs_renamelock_exit(struct mount *mp)
  70 {
  71         mutex_exit(&mp->mnt_renamelock);
  72 }