1 /* 2 * Copyright (c) 1980, 1990, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #ifndef lint 40 static char copyright[] = 41 "@(#) Copyright (c) 1980, 1990, 1993, 1994\n\ 42 The Regents of the University of California. All rights reserved.\n"; 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/mount.h> 47 #include <ufs/ufs/dinode.h> 48 #include <ufs/ffs/fs.h> 49 50 #include <unistd.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <fcntl.h> 54 55 int ffs_df __P((int, char *, struct statfs *)); 56 57 extern int bread __P((int, off_t, void *, int)); 58 extern char *getmntpt __P((char *)); 59 60 union { 61 struct fs iu_fs; 62 char dummy[SBSIZE]; 63 } sb; 64 #define sblock sb.iu_fs 65 66 int 67 ffs_df(rfd, file, sfsp) 68 int rfd; 69 char *file; 70 struct statfs *sfsp; 71 { 72 char *mntpt; 73 74 if (bread(rfd, (off_t)SBOFF, &sblock, SBSIZE) == 0) { 75 return (-1); 76 } 77 if (sblock.fs_magic != FS_MAGIC) { 78 return (-1); 79 } 80 sfsp->f_type = 0; 81 sfsp->f_flags = 0; 82 sfsp->f_bsize = sblock.fs_fsize; 83 sfsp->f_iosize = sblock.fs_bsize; 84 sfsp->f_blocks = sblock.fs_dsize; 85 sfsp->f_bfree = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag + 86 sblock.fs_cstotal.cs_nffree; 87 sfsp->f_bavail = (sblock.fs_dsize * (100 - sblock.fs_minfree) / 100) - 88 (sblock.fs_dsize - sfsp->f_bfree); 89 sfsp->f_files = sblock.fs_ncg * sblock.fs_ipg - ROOTINO; 90 sfsp->f_ffree = sblock.fs_cstotal.cs_nifree; 91 sfsp->f_fsid.val[0] = 0; 92 sfsp->f_fsid.val[1] = 0; 93 if ((mntpt = getmntpt(file)) == 0) 94 mntpt = ""; 95 memmove(&sfsp->f_mntonname[0], mntpt, MNAMELEN); 96 memmove(&sfsp->f_mntfromname[0], file, MNAMELEN); 97 strncpy(sfsp->f_fstypename, MOUNT_FFS, MFSNAMELEN-1); 98 sfsp->f_fstypename[MFSNAMELEN-1] = '\0'; 99 return (0); 100 } 101