xref: /freebsd/bin/df/df.c (revision a067aeceed8839e5516b9543d6842fdb0383237d)
14b88c807SRodney W. Grimes /*
24b88c807SRodney W. Grimes  * Copyright (c) 1980, 1990, 1993, 1994
34b88c807SRodney W. Grimes  *	The Regents of the University of California.  All rights reserved.
44b88c807SRodney W. Grimes  * (c) UNIX System Laboratories, Inc.
54b88c807SRodney W. Grimes  * All or some portions of this file are derived from material licensed
64b88c807SRodney W. Grimes  * to the University of California by American Telephone and Telegraph
74b88c807SRodney W. Grimes  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
84b88c807SRodney W. Grimes  * the permission of UNIX System Laboratories, Inc.
94b88c807SRodney W. Grimes  *
104b88c807SRodney W. Grimes  * Redistribution and use in source and binary forms, with or without
114b88c807SRodney W. Grimes  * modification, are permitted provided that the following conditions
124b88c807SRodney W. Grimes  * are met:
134b88c807SRodney W. Grimes  * 1. Redistributions of source code must retain the above copyright
144b88c807SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer.
154b88c807SRodney W. Grimes  * 2. Redistributions in binary form must reproduce the above copyright
164b88c807SRodney W. Grimes  *    notice, this list of conditions and the following disclaimer in the
174b88c807SRodney W. Grimes  *    documentation and/or other materials provided with the distribution.
184b88c807SRodney W. Grimes  * 3. All advertising materials mentioning features or use of this software
194b88c807SRodney W. Grimes  *    must display the following acknowledgement:
204b88c807SRodney W. Grimes  *	This product includes software developed by the University of
214b88c807SRodney W. Grimes  *	California, Berkeley and its contributors.
224b88c807SRodney W. Grimes  * 4. Neither the name of the University nor the names of its contributors
234b88c807SRodney W. Grimes  *    may be used to endorse or promote products derived from this software
244b88c807SRodney W. Grimes  *    without specific prior written permission.
254b88c807SRodney W. Grimes  *
264b88c807SRodney W. Grimes  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
274b88c807SRodney W. Grimes  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
284b88c807SRodney W. Grimes  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
294b88c807SRodney W. Grimes  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
304b88c807SRodney W. Grimes  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
314b88c807SRodney W. Grimes  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
324b88c807SRodney W. Grimes  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
334b88c807SRodney W. Grimes  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
344b88c807SRodney W. Grimes  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
354b88c807SRodney W. Grimes  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
364b88c807SRodney W. Grimes  * SUCH DAMAGE.
374b88c807SRodney W. Grimes  */
384b88c807SRodney W. Grimes 
394b88c807SRodney W. Grimes #ifndef lint
4016cc192aSSteve Price static const char copyright[] =
414b88c807SRodney W. Grimes "@(#) Copyright (c) 1980, 1990, 1993, 1994\n\
424b88c807SRodney W. Grimes 	The Regents of the University of California.  All rights reserved.\n";
434b88c807SRodney W. Grimes #endif /* not lint */
444b88c807SRodney W. Grimes 
454b88c807SRodney W. Grimes #ifndef lint
4616cc192aSSteve Price #if 0
4716cc192aSSteve Price static char sccsid[] = "@(#)df.c	8.9 (Berkeley) 5/8/95";
4816cc192aSSteve Price #else
4916cc192aSSteve Price static const char rcsid[] =
502a456239SPeter Wemm   "$FreeBSD$";
5116cc192aSSteve Price #endif
524b88c807SRodney W. Grimes #endif /* not lint */
534b88c807SRodney W. Grimes 
544b88c807SRodney W. Grimes #include <sys/param.h>
554b88c807SRodney W. Grimes #include <sys/stat.h>
564b88c807SRodney W. Grimes #include <sys/mount.h>
57a25695c3SJim Pirzyk #include <sys/sysctl.h>
58a78192e3SBruce Evans #include <ufs/ufs/ufsmount.h>
594b88c807SRodney W. Grimes 
604b88c807SRodney W. Grimes #include <err.h>
614b88c807SRodney W. Grimes #include <errno.h>
624b88c807SRodney W. Grimes #include <fcntl.h>
63dd6d33e8SMichael Haro #include <math.h>
644b88c807SRodney W. Grimes #include <stdio.h>
654b88c807SRodney W. Grimes #include <stdlib.h>
664b88c807SRodney W. Grimes #include <string.h>
67dd6d33e8SMichael Haro #include <sysexits.h>
684b88c807SRodney W. Grimes #include <unistd.h>
694b88c807SRodney W. Grimes 
70dd6d33e8SMichael Haro #define UNITS_SI 1
71dd6d33e8SMichael Haro #define UNITS_2 2
72dd6d33e8SMichael Haro 
73dd6d33e8SMichael Haro #define KILO_SZ(n) (n)
74dd6d33e8SMichael Haro #define MEGA_SZ(n) ((n) * (n))
75dd6d33e8SMichael Haro #define GIGA_SZ(n) ((n) * (n) * (n))
76dd6d33e8SMichael Haro #define TERA_SZ(n) ((n) * (n) * (n) * (n))
77dd6d33e8SMichael Haro #define PETA_SZ(n) ((n) * (n) * (n) * (n) * (n))
78dd6d33e8SMichael Haro 
79dd6d33e8SMichael Haro #define KILO_2_SZ (KILO_SZ(1024ULL))
80dd6d33e8SMichael Haro #define MEGA_2_SZ (MEGA_SZ(1024ULL))
81dd6d33e8SMichael Haro #define GIGA_2_SZ (GIGA_SZ(1024ULL))
82dd6d33e8SMichael Haro #define TERA_2_SZ (TERA_SZ(1024ULL))
83dd6d33e8SMichael Haro #define PETA_2_SZ (PETA_SZ(1024ULL))
84dd6d33e8SMichael Haro 
85dd6d33e8SMichael Haro #define KILO_SI_SZ (KILO_SZ(1000ULL))
86dd6d33e8SMichael Haro #define MEGA_SI_SZ (MEGA_SZ(1000ULL))
87dd6d33e8SMichael Haro #define GIGA_SI_SZ (GIGA_SZ(1000ULL))
88dd6d33e8SMichael Haro #define TERA_SI_SZ (TERA_SZ(1000ULL))
89dd6d33e8SMichael Haro #define PETA_SI_SZ (PETA_SZ(1000ULL))
90dd6d33e8SMichael Haro 
91dd6d33e8SMichael Haro unsigned long long vals_si [] = {1, KILO_SI_SZ, MEGA_SI_SZ, GIGA_SI_SZ, TERA_SI_SZ, PETA_SI_SZ};
92dd6d33e8SMichael Haro unsigned long long vals_base2[] = {1, KILO_2_SZ, MEGA_2_SZ, GIGA_2_SZ, TERA_2_SZ, PETA_2_SZ};
93dd6d33e8SMichael Haro unsigned long long *valp;
94dd6d33e8SMichael Haro 
95dd6d33e8SMichael Haro typedef enum { NONE, KILO, MEGA, GIGA, TERA, PETA, UNIT_MAX } unit_t;
96dd6d33e8SMichael Haro 
97dd6d33e8SMichael Haro int unitp [] = { NONE, KILO, MEGA, GIGA, TERA, PETA };
98dd6d33e8SMichael Haro 
994b88c807SRodney W. Grimes int	  bread __P((off_t, void *, int));
100a95a13bbSKris Kennaway int	  checkvfsname __P((const char *, char **));
1014b88c807SRodney W. Grimes char	 *getmntpt __P((char *));
102a95a13bbSKris Kennaway int	  main __P((int, char *[]));
103a25695c3SJim Pirzyk char	 *makenetvfslist __P((void));
104a95a13bbSKris Kennaway char	**makevfslist __P((char *));
105dd6d33e8SMichael Haro void	  prthuman __P((struct statfs *, long));
106dd6d33e8SMichael Haro void	  prthumanval __P((double));
1074b88c807SRodney W. Grimes void	  prtstat __P((struct statfs *, int));
108a95a13bbSKris Kennaway long	  regetmntinfo __P((struct statfs **, long, char **));
109b8904f2aSJoerg Wunsch int	  ufs_df __P((char *, int));
110dd6d33e8SMichael Haro unit_t	  unit_adjust __P((double *));
1114b88c807SRodney W. Grimes void	  usage __P((void));
1124b88c807SRodney W. Grimes 
113dd6d33e8SMichael Haro int	aflag = 0, hflag, iflag, nflag;
1144b88c807SRodney W. Grimes struct	ufs_args mdev;
1154b88c807SRodney W. Grimes 
1164b88c807SRodney W. Grimes int
1174b88c807SRodney W. Grimes main(argc, argv)
1184b88c807SRodney W. Grimes 	int argc;
1194b88c807SRodney W. Grimes 	char *argv[];
1204b88c807SRodney W. Grimes {
1214b88c807SRodney W. Grimes 	struct stat stbuf;
1224b88c807SRodney W. Grimes 	struct statfs statfsbuf, *mntbuf;
123a95a13bbSKris Kennaway 	const char *fstype;
124a95a13bbSKris Kennaway 	char *mntpath, *mntpt, **vfslist;
125a78192e3SBruce Evans 	long mntsize;
126a95a13bbSKris Kennaway 	int ch, i, maxwidth, rv, width;
127f3895a82SKris Kennaway 
128f3895a82SKris Kennaway 	fstype = "ufs";
1294b88c807SRodney W. Grimes 
130a78192e3SBruce Evans 	vfslist = NULL;
131a25695c3SJim Pirzyk 	while ((ch = getopt(argc, argv, "abgHhiklmnPt:")) != -1)
1324b88c807SRodney W. Grimes 		switch (ch) {
1335b42dac8SJulian Elischer 		case 'a':
1345b42dac8SJulian Elischer 			aflag = 1;
1355b42dac8SJulian Elischer 			break;
136dd6d33e8SMichael Haro 		case 'b':
137dd6d33e8SMichael Haro 				/* FALLTHROUGH */
138dd6d33e8SMichael Haro 		case 'P':
139dd6d33e8SMichael Haro 			putenv("BLOCKSIZE=512");
140dd6d33e8SMichael Haro 			hflag = 0;
141dd6d33e8SMichael Haro 			break;
14293a3fa19SJohn W. De Boskey 		case 'g':
14393a3fa19SJohn W. De Boskey 			putenv("BLOCKSIZE=1g");
14493a3fa19SJohn W. De Boskey 			hflag = 0;
14593a3fa19SJohn W. De Boskey 			break;
146dd6d33e8SMichael Haro 		case 'H':
147dd6d33e8SMichael Haro 			hflag = UNITS_SI;
148dd6d33e8SMichael Haro 			valp = vals_si;
149dd6d33e8SMichael Haro 			break;
150dd6d33e8SMichael Haro 		case 'h':
151dd6d33e8SMichael Haro 			hflag = UNITS_2;
152dd6d33e8SMichael Haro 			valp = vals_base2;
153dd6d33e8SMichael Haro 			break;
1544b88c807SRodney W. Grimes 		case 'i':
1554b88c807SRodney W. Grimes 			iflag = 1;
1564b88c807SRodney W. Grimes 			break;
1577f0eabfdSGarrett Wollman 		case 'k':
1589d4081eeSDavid Greenman 			putenv("BLOCKSIZE=1k");
159dd6d33e8SMichael Haro 			hflag = 0;
160dd6d33e8SMichael Haro 			break;
161a25695c3SJim Pirzyk 		case 'l':
162a25695c3SJim Pirzyk 			if (vfslist != NULL)
163a25695c3SJim Pirzyk 				errx(1, "-l and -t are mutually exclusive.");
164a25695c3SJim Pirzyk 			vfslist = makevfslist(makenetvfslist());
165a25695c3SJim Pirzyk 			break;
166dd6d33e8SMichael Haro 		case 'm':
167dd6d33e8SMichael Haro 			putenv("BLOCKSIZE=1m");
168dd6d33e8SMichael Haro 			hflag = 0;
1697f0eabfdSGarrett Wollman 			break;
1704b88c807SRodney W. Grimes 		case 'n':
1714b88c807SRodney W. Grimes 			nflag = 1;
1724b88c807SRodney W. Grimes 			break;
1734b88c807SRodney W. Grimes 		case 't':
174a78192e3SBruce Evans 			if (vfslist != NULL)
175a78192e3SBruce Evans 				errx(1, "only one -t option may be specified.");
176f3895a82SKris Kennaway  			fstype = optarg;
177a78192e3SBruce Evans 			vfslist = makevfslist(optarg);
1784b88c807SRodney W. Grimes 			break;
1794b88c807SRodney W. Grimes 		case '?':
1804b88c807SRodney W. Grimes 		default:
1814b88c807SRodney W. Grimes 			usage();
1824b88c807SRodney W. Grimes 		}
1834b88c807SRodney W. Grimes 	argc -= optind;
1844b88c807SRodney W. Grimes 	argv += optind;
1854b88c807SRodney W. Grimes 
1864b88c807SRodney W. Grimes 	mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
1874b88c807SRodney W. Grimes 	maxwidth = 0;
1884b88c807SRodney W. Grimes 	for (i = 0; i < mntsize; i++) {
1894b88c807SRodney W. Grimes 		width = strlen(mntbuf[i].f_mntfromname);
1904b88c807SRodney W. Grimes 		if (width > maxwidth)
1914b88c807SRodney W. Grimes 			maxwidth = width;
1924b88c807SRodney W. Grimes 	}
1934b88c807SRodney W. Grimes 
194b8904f2aSJoerg Wunsch 	rv = 0;
1954b88c807SRodney W. Grimes 	if (!*argv) {
196a78192e3SBruce Evans 		mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
197a78192e3SBruce Evans 		if (vfslist != NULL) {
1984b88c807SRodney W. Grimes 			maxwidth = 0;
1994b88c807SRodney W. Grimes 			for (i = 0; i < mntsize; i++) {
2004b88c807SRodney W. Grimes 				width = strlen(mntbuf[i].f_mntfromname);
2014b88c807SRodney W. Grimes 				if (width > maxwidth)
2024b88c807SRodney W. Grimes 					maxwidth = width;
2034b88c807SRodney W. Grimes 			}
2044b88c807SRodney W. Grimes 		}
2055b42dac8SJulian Elischer 		for (i = 0; i < mntsize; i++) {
2065b42dac8SJulian Elischer 			if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
2074b88c807SRodney W. Grimes 				prtstat(&mntbuf[i], maxwidth);
2085b42dac8SJulian Elischer 		}
209b8904f2aSJoerg Wunsch 		exit(rv);
2104b88c807SRodney W. Grimes 	}
2114b88c807SRodney W. Grimes 
2124b88c807SRodney W. Grimes 	for (; *argv; argv++) {
2134b88c807SRodney W. Grimes 		if (stat(*argv, &stbuf) < 0) {
2144b88c807SRodney W. Grimes 			if ((mntpt = getmntpt(*argv)) == 0) {
2154b88c807SRodney W. Grimes 				warn("%s", *argv);
216b8904f2aSJoerg Wunsch 				rv = 1;
2174b88c807SRodney W. Grimes 				continue;
2184b88c807SRodney W. Grimes 			}
219f3895a82SKris Kennaway 		} else if (S_ISCHR(stbuf.st_mode)) {
220f3895a82SKris Kennaway 			if ((mntpt = getmntpt(*argv)) == 0) {
221f3895a82SKris Kennaway 				mdev.fspec = *argv;
222f3895a82SKris Kennaway 				mntpath = strdup("/tmp/df.XXXXXX");
223f3895a82SKris Kennaway 				if (mntpath == NULL) {
224f3895a82SKris Kennaway 					warn("strdup failed");
225f3895a82SKris Kennaway 					rv = 1;
2264b88c807SRodney W. Grimes 					continue;
227f3895a82SKris Kennaway 				}
228f3895a82SKris Kennaway 				mntpt = mkdtemp(mntpath);
229f3895a82SKris Kennaway 				if (mntpt == NULL) {
230f3895a82SKris Kennaway 					warn("mkdtemp(\"%s\") failed", mntpath);
231f3895a82SKris Kennaway 					rv = 1;
232f3895a82SKris Kennaway 					free(mntpath);
233f3895a82SKris Kennaway 					continue;
234f3895a82SKris Kennaway 				}
235f3895a82SKris Kennaway 				if (mount(fstype, mntpt, MNT_RDONLY,
236f3895a82SKris Kennaway 				    &mdev) != 0) {
237f3895a82SKris Kennaway 					rv = ufs_df(*argv, maxwidth) || rv;
238f3895a82SKris Kennaway 					(void)rmdir(mntpt);
239f3895a82SKris Kennaway 					free(mntpath);
240f3895a82SKris Kennaway 					continue;
241f3895a82SKris Kennaway 				} else if (statfs(mntpt, &statfsbuf) == 0) {
242f3895a82SKris Kennaway 					statfsbuf.f_mntonname[0] = '\0';
243f3895a82SKris Kennaway 					prtstat(&statfsbuf, maxwidth);
244f3895a82SKris Kennaway 				} else {
245f3895a82SKris Kennaway 					warn("%s", *argv);
246f3895a82SKris Kennaway 					rv = 1;
247f3895a82SKris Kennaway 				}
248f3895a82SKris Kennaway 				(void)unmount(mntpt, 0);
249f3895a82SKris Kennaway 				(void)rmdir(mntpt);
250f3895a82SKris Kennaway 				free(mntpath);
251f3895a82SKris Kennaway 				continue;
252f3895a82SKris Kennaway 			}
2534b88c807SRodney W. Grimes 		} else
2544b88c807SRodney W. Grimes 			mntpt = *argv;
2554b88c807SRodney W. Grimes 		/*
2564b88c807SRodney W. Grimes 		 * Statfs does not take a `wait' flag, so we cannot
2574b88c807SRodney W. Grimes 		 * implement nflag here.
2584b88c807SRodney W. Grimes 		 */
2594b88c807SRodney W. Grimes 		if (statfs(mntpt, &statfsbuf) < 0) {
2604b88c807SRodney W. Grimes 			warn("%s", mntpt);
261b8904f2aSJoerg Wunsch 			rv = 1;
2624b88c807SRodney W. Grimes 			continue;
2634b88c807SRodney W. Grimes 		}
2644b88c807SRodney W. Grimes 		if (argc == 1)
2654b88c807SRodney W. Grimes 			maxwidth = strlen(statfsbuf.f_mntfromname) + 1;
2664b88c807SRodney W. Grimes 		prtstat(&statfsbuf, maxwidth);
2674b88c807SRodney W. Grimes 	}
268b8904f2aSJoerg Wunsch 	return (rv);
2694b88c807SRodney W. Grimes }
2704b88c807SRodney W. Grimes 
2714b88c807SRodney W. Grimes char *
2724b88c807SRodney W. Grimes getmntpt(name)
2734b88c807SRodney W. Grimes 	char *name;
2744b88c807SRodney W. Grimes {
2754b88c807SRodney W. Grimes 	long mntsize, i;
2764b88c807SRodney W. Grimes 	struct statfs *mntbuf;
2774b88c807SRodney W. Grimes 
2784b88c807SRodney W. Grimes 	mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
2794b88c807SRodney W. Grimes 	for (i = 0; i < mntsize; i++) {
2804b88c807SRodney W. Grimes 		if (!strcmp(mntbuf[i].f_mntfromname, name))
2814b88c807SRodney W. Grimes 			return (mntbuf[i].f_mntonname);
2824b88c807SRodney W. Grimes 	}
2834b88c807SRodney W. Grimes 	return (0);
2844b88c807SRodney W. Grimes }
2854b88c807SRodney W. Grimes 
2864b88c807SRodney W. Grimes /*
2874b88c807SRodney W. Grimes  * Make a pass over the filesystem info in ``mntbuf'' filtering out
288a78192e3SBruce Evans  * filesystem types not in vfslist and possibly re-stating to get
2894b88c807SRodney W. Grimes  * current (not cached) info.  Returns the new count of valid statfs bufs.
2904b88c807SRodney W. Grimes  */
2914b88c807SRodney W. Grimes long
292a78192e3SBruce Evans regetmntinfo(mntbufp, mntsize, vfslist)
2934b88c807SRodney W. Grimes 	struct statfs **mntbufp;
294a78192e3SBruce Evans 	long mntsize;
295a78192e3SBruce Evans 	char **vfslist;
2964b88c807SRodney W. Grimes {
2974b88c807SRodney W. Grimes 	int i, j;
2984b88c807SRodney W. Grimes 	struct statfs *mntbuf;
2994b88c807SRodney W. Grimes 
300a78192e3SBruce Evans 	if (vfslist == NULL)
3014b88c807SRodney W. Grimes 		return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
3024b88c807SRodney W. Grimes 
3034b88c807SRodney W. Grimes 	mntbuf = *mntbufp;
304a78192e3SBruce Evans 	for (j = 0, i = 0; i < mntsize; i++) {
305a78192e3SBruce Evans 		if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
306a78192e3SBruce Evans 			continue;
3074b88c807SRodney W. Grimes 		if (!nflag)
3084b88c807SRodney W. Grimes 			(void)statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
3094b88c807SRodney W. Grimes 		else if (i != j)
3104b88c807SRodney W. Grimes 			mntbuf[j] = mntbuf[i];
3114b88c807SRodney W. Grimes 		j++;
3124b88c807SRodney W. Grimes 	}
3134b88c807SRodney W. Grimes 	return (j);
3144b88c807SRodney W. Grimes }
3154b88c807SRodney W. Grimes 
3164b88c807SRodney W. Grimes /*
317dd6d33e8SMichael Haro  * Output in "human-readable" format.  Uses 3 digits max and puts
318dd6d33e8SMichael Haro  * unit suffixes at the end.  Makes output compact and easy to read,
319dd6d33e8SMichael Haro  * especially on huge disks.
320dd6d33e8SMichael Haro  *
321dd6d33e8SMichael Haro  */
322dd6d33e8SMichael Haro unit_t
323dd6d33e8SMichael Haro unit_adjust(val)
324dd6d33e8SMichael Haro 	double *val;
325dd6d33e8SMichael Haro {
326dd6d33e8SMichael Haro 	double abval;
327dd6d33e8SMichael Haro 	unit_t unit;
328dd6d33e8SMichael Haro 	unsigned int unit_sz;
329dd6d33e8SMichael Haro 
330dd6d33e8SMichael Haro 	abval = fabs(*val);
331dd6d33e8SMichael Haro 
332dd6d33e8SMichael Haro 	unit_sz = abval ? ilogb(abval) / 10 : 0;
333dd6d33e8SMichael Haro 
334dd6d33e8SMichael Haro 	if (unit_sz >= UNIT_MAX) {
335dd6d33e8SMichael Haro 		unit = NONE;
336dd6d33e8SMichael Haro 	} else {
337dd6d33e8SMichael Haro 		unit = unitp[unit_sz];
338dd6d33e8SMichael Haro 		*val /= (double)valp[unit_sz];
339dd6d33e8SMichael Haro 	}
340dd6d33e8SMichael Haro 
341dd6d33e8SMichael Haro 	return (unit);
342dd6d33e8SMichael Haro }
343dd6d33e8SMichael Haro 
344dd6d33e8SMichael Haro void
345dd6d33e8SMichael Haro prthuman(sfsp, used)
346dd6d33e8SMichael Haro 	struct statfs *sfsp;
347dd6d33e8SMichael Haro 	long used;
348dd6d33e8SMichael Haro {
349dd6d33e8SMichael Haro 
350dd6d33e8SMichael Haro 	prthumanval((double)sfsp->f_blocks * (double)sfsp->f_bsize);
351dd6d33e8SMichael Haro 	prthumanval((double)used * (double)sfsp->f_bsize);
352dd6d33e8SMichael Haro 	prthumanval((double)sfsp->f_bavail * (double)sfsp->f_bsize);
353dd6d33e8SMichael Haro }
354dd6d33e8SMichael Haro 
355dd6d33e8SMichael Haro void
356dd6d33e8SMichael Haro prthumanval(bytes)
357dd6d33e8SMichael Haro 	double bytes;
358dd6d33e8SMichael Haro {
359dd6d33e8SMichael Haro 
360dd6d33e8SMichael Haro 	unit_t unit;
361dd6d33e8SMichael Haro 	unit = unit_adjust(&bytes);
362dd6d33e8SMichael Haro 
363dd6d33e8SMichael Haro 	if (bytes == 0)
364dd6d33e8SMichael Haro 		(void)printf("     0B");
365dd6d33e8SMichael Haro 	else if (bytes > 10)
366dd6d33e8SMichael Haro 		(void)printf(" %5.0f%c", bytes, "BKMGTPE"[unit]);
367dd6d33e8SMichael Haro 	else
368dd6d33e8SMichael Haro 		(void)printf(" %5.1f%c", bytes, "BKMGTPE"[unit]);
369dd6d33e8SMichael Haro }
370dd6d33e8SMichael Haro 
371dd6d33e8SMichael Haro /*
3724b88c807SRodney W. Grimes  * Convert statfs returned filesystem size into BLOCKSIZE units.
3734b88c807SRodney W. Grimes  * Attempts to avoid overflow for large filesystems.
3744b88c807SRodney W. Grimes  */
3754b88c807SRodney W. Grimes #define fsbtoblk(num, fsbs, bs) \
3764b88c807SRodney W. Grimes 	(((fsbs) != 0 && (fsbs) < (bs)) ? \
3774b88c807SRodney W. Grimes 		(num) / ((bs) / (fsbs)) : (num) * ((fsbs) / (bs)))
3784b88c807SRodney W. Grimes 
3794b88c807SRodney W. Grimes /*
3804b88c807SRodney W. Grimes  * Print out status about a filesystem.
3814b88c807SRodney W. Grimes  */
3824b88c807SRodney W. Grimes void
3834b88c807SRodney W. Grimes prtstat(sfsp, maxwidth)
3844b88c807SRodney W. Grimes 	struct statfs *sfsp;
3854b88c807SRodney W. Grimes 	int maxwidth;
3864b88c807SRodney W. Grimes {
3874b88c807SRodney W. Grimes 	static long blocksize;
3884b88c807SRodney W. Grimes 	static int headerlen, timesthrough;
389a95a13bbSKris Kennaway 	static const char *header;
3904b88c807SRodney W. Grimes 	long used, availblks, inodes;
3914b88c807SRodney W. Grimes 
3924b88c807SRodney W. Grimes 	if (maxwidth < 11)
3934b88c807SRodney W. Grimes 		maxwidth = 11;
3944b88c807SRodney W. Grimes 	if (++timesthrough == 1) {
395dd6d33e8SMichael Haro 		if (hflag) {
396dd6d33e8SMichael Haro 			header = "  Size";
397dd6d33e8SMichael Haro 			headerlen = strlen(header);
398dd6d33e8SMichael Haro 			(void)printf("%-*.*s %-s   Used  Avail Capacity",
3994b88c807SRodney W. Grimes 				maxwidth, maxwidth, "Filesystem", header);
400dd6d33e8SMichael Haro 		} else {
401dd6d33e8SMichael Haro 			header = getbsize(&headerlen, &blocksize);
402dd6d33e8SMichael Haro 			(void)printf("%-*.*s %-s     Used    Avail Capacity",
403dd6d33e8SMichael Haro 				maxwidth, maxwidth, "Filesystem", header);
404dd6d33e8SMichael Haro 		}
4054b88c807SRodney W. Grimes 		if (iflag)
4064b88c807SRodney W. Grimes 			(void)printf(" iused   ifree  %%iused");
4074b88c807SRodney W. Grimes 		(void)printf("  Mounted on\n");
4084b88c807SRodney W. Grimes 	}
4094b88c807SRodney W. Grimes 	(void)printf("%-*.*s", maxwidth, maxwidth, sfsp->f_mntfromname);
4104b88c807SRodney W. Grimes 	used = sfsp->f_blocks - sfsp->f_bfree;
4114b88c807SRodney W. Grimes 	availblks = sfsp->f_bavail + used;
412dd6d33e8SMichael Haro 	if (hflag) {
413dd6d33e8SMichael Haro 		prthuman(sfsp, used);
414dd6d33e8SMichael Haro 	} else {
4154b88c807SRodney W. Grimes 		(void)printf(" %*ld %8ld %8ld", headerlen,
4164b88c807SRodney W. Grimes 	            fsbtoblk(sfsp->f_blocks, sfsp->f_bsize, blocksize),
4174b88c807SRodney W. Grimes 	            fsbtoblk(used, sfsp->f_bsize, blocksize),
4184b88c807SRodney W. Grimes 	            fsbtoblk(sfsp->f_bavail, sfsp->f_bsize, blocksize));
419dd6d33e8SMichael Haro 	}
4204b88c807SRodney W. Grimes 	(void)printf(" %5.0f%%",
4214b88c807SRodney W. Grimes 	    availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
4224b88c807SRodney W. Grimes 	if (iflag) {
4234b88c807SRodney W. Grimes 		inodes = sfsp->f_files;
4244b88c807SRodney W. Grimes 		used = inodes - sfsp->f_ffree;
4254b88c807SRodney W. Grimes 		(void)printf(" %7ld %7ld %5.0f%% ", used, sfsp->f_ffree,
4264b88c807SRodney W. Grimes 		   inodes == 0 ? 100.0 : (double)used / (double)inodes * 100.0);
4274b88c807SRodney W. Grimes 	} else
4284b88c807SRodney W. Grimes 		(void)printf("  ");
4294b88c807SRodney W. Grimes 	(void)printf("  %s\n", sfsp->f_mntonname);
4304b88c807SRodney W. Grimes }
4314b88c807SRodney W. Grimes 
4324b88c807SRodney W. Grimes /*
4334b88c807SRodney W. Grimes  * This code constitutes the pre-system call Berkeley df code for extracting
4344b88c807SRodney W. Grimes  * information from filesystem superblocks.
4354b88c807SRodney W. Grimes  */
436a78192e3SBruce Evans #include <ufs/ufs/dinode.h>
4374b88c807SRodney W. Grimes #include <ufs/ffs/fs.h>
4384b88c807SRodney W. Grimes #include <errno.h>
4394b88c807SRodney W. Grimes #include <fstab.h>
4404b88c807SRodney W. Grimes 
4414b88c807SRodney W. Grimes union {
4424b88c807SRodney W. Grimes 	struct fs iu_fs;
4434b88c807SRodney W. Grimes 	char dummy[SBSIZE];
4444b88c807SRodney W. Grimes } sb;
4454b88c807SRodney W. Grimes #define sblock sb.iu_fs
4464b88c807SRodney W. Grimes 
4474b88c807SRodney W. Grimes int	rfd;
4484b88c807SRodney W. Grimes 
449b8904f2aSJoerg Wunsch int
4504b88c807SRodney W. Grimes ufs_df(file, maxwidth)
4514b88c807SRodney W. Grimes 	char *file;
4524b88c807SRodney W. Grimes 	int maxwidth;
4534b88c807SRodney W. Grimes {
4544b88c807SRodney W. Grimes 	struct statfs statfsbuf;
4554b88c807SRodney W. Grimes 	struct statfs *sfsp;
456a95a13bbSKris Kennaway 	const char *mntpt;
4574b88c807SRodney W. Grimes 	static int synced;
4584b88c807SRodney W. Grimes 
4594b88c807SRodney W. Grimes 	if (synced++ == 0)
4604b88c807SRodney W. Grimes 		sync();
4614b88c807SRodney W. Grimes 
4624b88c807SRodney W. Grimes 	if ((rfd = open(file, O_RDONLY)) < 0) {
4634b88c807SRodney W. Grimes 		warn("%s", file);
46480214f04SJoerg Wunsch 		return (1);
4654b88c807SRodney W. Grimes 	}
4664b88c807SRodney W. Grimes 	if (bread((off_t)SBOFF, &sblock, SBSIZE) == 0) {
4674b88c807SRodney W. Grimes 		(void)close(rfd);
46880214f04SJoerg Wunsch 		return (1);
4694b88c807SRodney W. Grimes 	}
4704b88c807SRodney W. Grimes 	sfsp = &statfsbuf;
471a78192e3SBruce Evans 	sfsp->f_type = 1;
472a78192e3SBruce Evans 	strcpy(sfsp->f_fstypename, "ufs");
4734b88c807SRodney W. Grimes 	sfsp->f_flags = 0;
4744b88c807SRodney W. Grimes 	sfsp->f_bsize = sblock.fs_fsize;
4754b88c807SRodney W. Grimes 	sfsp->f_iosize = sblock.fs_bsize;
4764b88c807SRodney W. Grimes 	sfsp->f_blocks = sblock.fs_dsize;
4774b88c807SRodney W. Grimes 	sfsp->f_bfree = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag +
4784b88c807SRodney W. Grimes 		sblock.fs_cstotal.cs_nffree;
47951ea8b57SBruce Evans 	sfsp->f_bavail = freespace(&sblock, sblock.fs_minfree);
4804b88c807SRodney W. Grimes 	sfsp->f_files =  sblock.fs_ncg * sblock.fs_ipg;
4814b88c807SRodney W. Grimes 	sfsp->f_ffree = sblock.fs_cstotal.cs_nifree;
4824b88c807SRodney W. Grimes 	sfsp->f_fsid.val[0] = 0;
4834b88c807SRodney W. Grimes 	sfsp->f_fsid.val[1] = 0;
4844b88c807SRodney W. Grimes 	if ((mntpt = getmntpt(file)) == 0)
4854b88c807SRodney W. Grimes 		mntpt = "";
486a95a13bbSKris Kennaway 	memmove(&sfsp->f_mntonname[0], mntpt, (size_t)MNAMELEN);
487a95a13bbSKris Kennaway 	memmove(&sfsp->f_mntfromname[0], file, (size_t)MNAMELEN);
4884b88c807SRodney W. Grimes 	prtstat(sfsp, maxwidth);
4894b88c807SRodney W. Grimes 	(void)close(rfd);
49080214f04SJoerg Wunsch 	return (0);
4914b88c807SRodney W. Grimes }
4924b88c807SRodney W. Grimes 
4934b88c807SRodney W. Grimes int
4944b88c807SRodney W. Grimes bread(off, buf, cnt)
4954b88c807SRodney W. Grimes 	off_t off;
4964b88c807SRodney W. Grimes 	void *buf;
4974b88c807SRodney W. Grimes 	int cnt;
4984b88c807SRodney W. Grimes {
499a95a13bbSKris Kennaway 	ssize_t nr;
5004b88c807SRodney W. Grimes 
5014b88c807SRodney W. Grimes 	(void)lseek(rfd, off, SEEK_SET);
502a95a13bbSKris Kennaway 	if ((nr = read(rfd, buf, (size_t)cnt)) != (ssize_t)cnt) {
5034b88c807SRodney W. Grimes 		/* Probably a dismounted disk if errno == EIO. */
5044b88c807SRodney W. Grimes 		if (errno != EIO)
505a95a13bbSKris Kennaway 			(void)fprintf(stderr, "\ndf: %lld: %s\n",
506a95a13bbSKris Kennaway 			    (long long)off, strerror(nr > 0 ? EIO : errno));
5074b88c807SRodney W. Grimes 		return (0);
5084b88c807SRodney W. Grimes 	}
5094b88c807SRodney W. Grimes 	return (1);
5104b88c807SRodney W. Grimes }
5114b88c807SRodney W. Grimes 
5124b88c807SRodney W. Grimes void
5134b88c807SRodney W. Grimes usage()
5144b88c807SRodney W. Grimes {
515dd6d33e8SMichael Haro 
516a78192e3SBruce Evans 	(void)fprintf(stderr,
517a25695c3SJim Pirzyk 	    "usage: df [-b | -H | -h | -k | -m | -P] [-ailn] [-t type] [file | filesystem ...]\n");
518dd6d33e8SMichael Haro 	exit(EX_USAGE);
5194b88c807SRodney W. Grimes }
520a25695c3SJim Pirzyk 
521a067aeceSGarrett Wollman char *
522a067aeceSGarrett Wollman makenetvfslist()
523a25695c3SJim Pirzyk {
524a25695c3SJim Pirzyk 	char *str, *strptr, **listptr;
525b3e8643fSMatt Jacob 	int mib[3], maxvfsconf, cnt=0, i;
526b3e8643fSMatt Jacob 	size_t miblen;
527a25695c3SJim Pirzyk 	struct ovfsconf *ptr;
528a25695c3SJim Pirzyk 
529a25695c3SJim Pirzyk 	mib[0] = CTL_VFS; mib[1] = VFS_GENERIC; mib[2] = VFS_MAXTYPENUM;
530a25695c3SJim Pirzyk 	miblen=sizeof(maxvfsconf);
531cc66540eSJacques Vidrine 	if (sysctl(mib, (unsigned int)(sizeof(mib) / sizeof(mib[0])),
532cc66540eSJacques Vidrine 	    &maxvfsconf, &miblen, NULL, 0)) {
533a25695c3SJim Pirzyk 		warnx("sysctl failed");
534a25695c3SJim Pirzyk 		return (NULL);
535a25695c3SJim Pirzyk 	}
536a25695c3SJim Pirzyk 
537a25695c3SJim Pirzyk 	if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
538a25695c3SJim Pirzyk 		warnx("malloc failed");
539a25695c3SJim Pirzyk 		return (NULL);
540a25695c3SJim Pirzyk 	}
541a25695c3SJim Pirzyk 
542a25695c3SJim Pirzyk 	for (ptr = getvfsent(); ptr; ptr = getvfsent())
543a25695c3SJim Pirzyk 		if (ptr->vfc_flags & VFCF_NETWORK) {
544a25695c3SJim Pirzyk 			listptr[cnt++] = strdup(ptr->vfc_name);
545a067aeceSGarrett Wollman 			if (listptr[cnt-1] == NULL) {
546a25695c3SJim Pirzyk 				warnx("malloc failed");
547a25695c3SJim Pirzyk 				return (NULL);
548a25695c3SJim Pirzyk 			}
549a25695c3SJim Pirzyk 		}
550a25695c3SJim Pirzyk 
551a25695c3SJim Pirzyk 	if ((str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
552a25695c3SJim Pirzyk 		warnx("malloc failed");
553a25695c3SJim Pirzyk 		free(listptr);
554a25695c3SJim Pirzyk 		return (NULL);
555a25695c3SJim Pirzyk 	}
556a25695c3SJim Pirzyk 
557a25695c3SJim Pirzyk 	*str = 'n'; *(str + 1) = 'o';
558a25695c3SJim Pirzyk 	for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
559a25695c3SJim Pirzyk 		strncpy(strptr, listptr[i], 32);
560a25695c3SJim Pirzyk 		strptr += strlen(listptr[i]);
561a25695c3SJim Pirzyk 		*strptr = ',';
562a25695c3SJim Pirzyk 		free(listptr[i]);
563a25695c3SJim Pirzyk 	}
564a25695c3SJim Pirzyk 	*(--strptr) = NULL;
565a25695c3SJim Pirzyk 
566a25695c3SJim Pirzyk 	free(listptr);
567a25695c3SJim Pirzyk 	return (str);
568a25695c3SJim Pirzyk }
569