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/*
* This file is substantially duplicated from src/sys/ufs/lfs/lfs_vfsops.c:lfs_statfs().
* That file's copyright is applied here.
*/
/*
* Copyright (c) 1989, 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)lfs_vfsops.c 8.20 (Berkeley) 6/10/95
*/
#include <sys/param.h>
#include <sys/mount.h>
#include <ufs/ufs/quota.h>
#include <ufs/ufs/dinode.h>
#include <ufs/lfs/lfs.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <fstab.h>
int lfs_df __P((int, char *, struct statfs *));
extern int bread __P((int, off_t, void *, int));
extern char *getmntpt __P((char *));
union {
struct lfs il_fs;
char dummy[LFS_SBPAD];
} sb;
#define sblock sb.il_fs
int
lfs_df(rfd, file, sfsp)
int rfd;
char *file;
struct statfs *sfsp;
{
char *mntpt;
if (bread(rfd, (off_t)LFS_LABELPAD, &sblock, LFS_SBPAD) == 0) {
return (-1);
}
if (sblock.lfs_magic != LFS_MAGIC) {
return (-1);
}
sfsp->f_type = 0; /* Unused field, set to 0 */
sfsp->f_flags = 0; /* The fs is not mapped, so no flags */
sfsp->f_bsize = sblock.lfs_bsize;
sfsp->f_iosize = sblock.lfs_bsize;
sfsp->f_blocks = dbtofrags(&sblock, sblock.lfs_dsize);
sfsp->f_bfree = dbtofrags(&sblock, sblock.lfs_bfree);
sfsp->f_bavail = sblock.lfs_dsize * (100 - sblock.lfs_minfree) / 100;
sfsp->f_bavail = (sfsp->f_bavail > sblock.lfs_bfree) ?
sblock.lfs_bfree : sfsp->f_bavail;
sfsp->f_bavail = dbtofrags(&sblock, sfsp->f_bavail);
if (sfsp->f_bavail < 0)
sfsp->f_bavail = 0;
sfsp->f_files = sblock.lfs_nfiles;
sfsp->f_ffree = sblock.lfs_bfree * sblock.lfs_inopb;
sfsp->f_fsid.val[0] = 0;
sfsp->f_fsid.val[1] = 0;
if ((mntpt = getmntpt(file)) == 0)
mntpt = "";
memmove(&sfsp->f_mntonname[0], mntpt, MNAMELEN);
memmove(&sfsp->f_mntfromname[0], file, MNAMELEN);
strncpy(sfsp->f_fstypename, MOUNT_LFS, MFSNAMELEN-1);
sfsp->f_fstypename[MFSNAMELEN-1] = '\0';
return (0);
}
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