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genfs_vfsops.c revision 1.1.16.2 
      1 /*	$NetBSD: genfs_vfsops.c,v 1.1.16.2 2010/03/11 15:04:22 yamt 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 1.1.16.2 2010/03/11 15:04:22 yamt 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 }
     73