/* $OpenBSD: lfs_df.c,v 1.8 2002/07/04 04:26:39 deraadt Exp $ */ /* * 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 #include #include #include #include #include #include #include #include #include int lfs_df(int, char *, struct statfs *); extern int bread(int, off_t, void *, int); extern char *getmntpt(char *); union { struct lfs il_fs; char dummy[LFS_SBPAD]; } sb; #define sblock sb.il_fs int lfs_df(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_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); strlcpy(sfsp->f_fstypename, MOUNT_LFS, MFSNAMELEN); return (0); }