2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1980, 1990, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static const char copyright[] =
40 "@(#) Copyright (c) 1980, 1990, 1993, 1994\n\
41 The Regents of the University of California. All rights reserved.\n";
45 static char sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
48 #include <sys/cdefs.h>
49 __FBSDID("$FreeBSD$");
51 #include <sys/param.h>
53 #include <sys/mount.h>
54 #include <sys/sysctl.h>
69 /* Maximum widths of various fields. */
80 static void addstat(struct statfs *, struct statfs *);
81 static char *getmntpt(const char *);
82 static const char **makevfslist(char *fslist, int *skip);
83 static int checkvfsname(const char *vfsname, const char **vfslist, int skip);
84 static int checkvfsselected(char *);
85 static int int64width(int64_t);
86 static char *makenetvfslist(void);
87 static void prthuman(const struct statfs *, int64_t);
88 static void prthumanval(const char *, int64_t);
89 static intmax_t fsbtoblk(int64_t, uint64_t, u_long);
90 static void prtstat(struct statfs *, struct maxwidths *);
91 static size_t regetmntinfo(struct statfs **, long);
92 static void update_maxwidths(struct maxwidths *, const struct statfs *);
93 static void usage(void);
98 return (a > b ? a : b);
101 static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag;
102 static int thousands;
103 static int skipvfs_l, skipvfs_t;
104 static const char **vfslist_l, **vfslist_t;
106 static const struct option long_options[] =
108 { "si", no_argument, NULL, 'H' },
109 { NULL, no_argument, NULL, 0 },
113 main(int argc, char *argv[])
116 struct statfs statfsbuf, totalbuf;
117 struct maxwidths maxwidths;
118 struct statfs *mntbuf;
123 (void)setlocale(LC_ALL, "");
124 memset(&maxwidths, 0, sizeof(maxwidths));
125 memset(&totalbuf, 0, sizeof(totalbuf));
126 totalbuf.f_bsize = DEV_BSIZE;
127 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN);
129 argc = xo_parse_args(argc, argv);
133 while ((ch = getopt_long(argc, argv, "+abcgHhiklmnPt:T,", long_options,
143 * POSIX specifically discusses the behavior of
144 * both -k and -P. It states that the blocksize should
145 * be set to 1024. Thus, if this occurs, simply break
146 * rather than clobbering the old blocksize.
150 setenv("BLOCKSIZE", "512", 1);
157 setenv("BLOCKSIZE", "1g", 1);
171 setenv("BLOCKSIZE", "1024", 1);
175 /* Ignore duplicate -l */
178 vfslist_l = makevfslist(makenetvfslist(), &skipvfs_l);
182 setenv("BLOCKSIZE", "1m", 1);
189 if (vfslist_t != NULL)
190 xo_errx(1, "only one -t option may be specified");
191 vfslist_t = makevfslist(optarg, &skipvfs_t);
208 /* everything (modulo -t) */
209 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
210 mntsize = regetmntinfo(&mntbuf, mntsize);
212 /* just the filesystems specified on the command line */
213 mntbuf = malloc(argc * sizeof(*mntbuf));
215 xo_err(1, "malloc()");
217 /* continued in for loop below */
220 xo_open_container("storage-system-information");
221 xo_open_list("filesystem");
223 /* iterate through specified filesystems */
224 for (; *argv; argv++) {
225 if (stat(*argv, &stbuf) < 0) {
226 if ((mntpt = getmntpt(*argv)) == NULL) {
227 xo_warn("%s", *argv);
231 } else if (S_ISCHR(stbuf.st_mode)) {
232 mntpt = getmntpt(*argv);
234 xo_warnx("%s: not mounted", *argv);
243 * Statfs does not take a `wait' flag, so we cannot
244 * implement nflag here.
246 if (statfs(mntpt, &statfsbuf) < 0) {
247 xo_warn("%s", mntpt);
253 * Check to make sure the arguments we've been given are
254 * satisfied. Return an error if we have been asked to
255 * list a mount point that does not match the other args
256 * we've been given (-l, -t, etc.).
258 if (checkvfsselected(statfsbuf.f_fstypename) != 0) {
263 /* the user asked for it, so ignore the ignore flag */
264 statfsbuf.f_flags &= ~MNT_IGNORE;
267 mntbuf[mntsize++] = statfsbuf;
270 memset(&maxwidths, 0, sizeof(maxwidths));
271 for (i = 0; i < mntsize; i++) {
272 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) {
273 update_maxwidths(&maxwidths, &mntbuf[i]);
275 addstat(&totalbuf, &mntbuf[i]);
278 for (i = 0; i < mntsize; i++)
279 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
280 prtstat(&mntbuf[i], &maxwidths);
282 xo_close_list("filesystem");
285 prtstat(&totalbuf, &maxwidths);
287 xo_close_container("storage-system-information");
294 getmntpt(const char *name)
297 struct statfs *mntbuf;
299 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
300 for (i = 0; i < mntsize; i++) {
301 if (!strcmp(mntbuf[i].f_mntfromname, name))
302 return (mntbuf[i].f_mntonname);
308 makevfslist(char *fslist, int *skip)
317 if (fslist[0] == 'n' && fslist[1] == 'o') {
321 for (i = 0, nextcp = fslist; *nextcp; nextcp++)
324 if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) {
325 xo_warnx("malloc failed");
331 while ((nextcp = strchr(nextcp, ',')) != NULL) {
340 checkvfsname(const char *vfsname, const char **vfslist, int skip)
345 while (*vfslist != NULL) {
346 if (strcmp(vfsname, *vfslist) == 0)
354 * Without -l and -t option, all file system types are enabled.
355 * The -l option selects the local file systems, if present.
356 * A -t option modifies the selection by adding or removing further
357 * file system types, based on the argument that is passed.
360 checkvfsselected(char *fstypename)
365 /* if -t option used then select passed types */
366 result = checkvfsname(fstypename, vfslist_t, skipvfs_t);
368 /* if -l option then adjust selection */
369 if (checkvfsname(fstypename, vfslist_l, skipvfs_l) == skipvfs_t)
373 /* no -t option then -l decides */
374 result = checkvfsname(fstypename, vfslist_l, skipvfs_l);
380 * Make a pass over the file system info in ``mntbuf'' filtering out
381 * file system types not in vfslist_{l,t} and possibly re-stating to get
382 * current (not cached) info. Returns the new count of valid statfs bufs.
385 regetmntinfo(struct statfs **mntbufp, long mntsize)
388 struct statfs *mntbuf;
390 if (vfslist_l == NULL && vfslist_t == NULL)
391 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
394 for (j = 0, i = 0; i < mntsize; i++) {
395 if (checkvfsselected(mntbuf[i].f_fstypename) != 0)
398 * XXX statfs(2) can fail for various reasons. It may be
399 * possible that the user does not have access to the
400 * pathname, if this happens, we will fall back on
401 * "stale" filesystem statistics.
403 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]);
404 if (nflag || error < 0)
407 xo_warnx("%s stats possibly stale",
408 mntbuf[i].f_mntonname);
409 mntbuf[j] = mntbuf[i];
417 prthuman(const struct statfs *sfsp, int64_t used)
420 prthumanval(" {:blocks/%6s}", sfsp->f_blocks * sfsp->f_bsize);
421 prthumanval(" {:used/%6s}", used * sfsp->f_bsize);
422 prthumanval(" {:available/%6s}", sfsp->f_bavail * sfsp->f_bsize);
426 prthumanval(const char *fmt, int64_t bytes)
431 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
432 if (hflag == UNITS_SI)
433 flags |= HN_DIVISOR_1000;
435 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
436 bytes, "", HN_AUTOSCALE, flags);
438 xo_attr("value", "%lld", (long long) bytes);
443 * Print an inode count in "human-readable" format.
446 prthumanvalinode(const char *fmt, int64_t bytes)
451 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
453 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
454 bytes, "", HN_AUTOSCALE, flags);
456 xo_attr("value", "%lld", (long long) bytes);
461 * Convert statfs returned file system size into BLOCKSIZE units.
464 fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
466 return (num * (intmax_t) fsbs / (int64_t) bs);
470 * Print out status about a file system.
473 prtstat(struct statfs *sfsp, struct maxwidths *mwp)
475 static long blocksize;
476 static int headerlen, timesthrough = 0;
477 static const char *header;
478 int64_t used, availblks, inodes;
481 if (++timesthrough == 1) {
482 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
483 mwp->fstype = imax(mwp->fstype, (int)strlen("Type"));
484 if (thousands) { /* make space for commas */
485 mwp->total += (mwp->total - 1) / 3;
486 mwp->used += (mwp->used - 1) / 3;
487 mwp->avail += (mwp->avail - 1) / 3;
488 mwp->iused += (mwp->iused - 1) / 3;
489 mwp->ifree += (mwp->ifree - 1) / 3;
493 mwp->total = mwp->used = mwp->avail =
496 header = getbsize(&headerlen, &blocksize);
497 mwp->total = imax(mwp->total, headerlen);
499 mwp->used = imax(mwp->used, (int)strlen("Used"));
500 mwp->avail = imax(mwp->avail, (int)strlen("Avail"));
502 xo_emit("{T:/%-*s}", mwp->mntfrom, "Filesystem");
504 xo_emit(" {T:/%-*s}", mwp->fstype, "Type");
505 xo_emit(" {T:/%*s} {T:/%*s} {T:/%*s} {T:Capacity}",
507 mwp->used, "Used", mwp->avail, "Avail");
509 mwp->iused = imax(hflag ? 0 : mwp->iused,
510 (int)strlen(" iused"));
511 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
512 (int)strlen("ifree"));
513 xo_emit(" {T:/%*s} {T:/%*s} {T:\%iused}",
514 mwp->iused - 2, "iused", mwp->ifree, "ifree");
516 xo_emit(" {T:Mounted on}\n");
519 xo_open_instance("filesystem");
520 /* Check for 0 block size. Can this happen? */
521 if (sfsp->f_bsize == 0) {
522 xo_warnx ("File system %s does not have a block size, assuming 512.",
526 xo_emit("{tk:name/%-*s}", mwp->mntfrom, sfsp->f_mntfromname);
528 xo_emit(" {:type/%-*s}", mwp->fstype, sfsp->f_fstypename);
529 used = sfsp->f_blocks - sfsp->f_bfree;
530 availblks = sfsp->f_bavail + used;
532 prthuman(sfsp, used);
535 format = " {t:total-blocks/%*j'd} {t:used-blocks/%*j'd} "
536 "{t:available-blocks/%*j'd}";
538 format = " {t:total-blocks/%*jd} {t:used-blocks/%*jd} "
539 "{t:available-blocks/%*jd}";
541 mwp->total, fsbtoblk(sfsp->f_blocks,
542 sfsp->f_bsize, blocksize),
543 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
544 mwp->avail, fsbtoblk(sfsp->f_bavail,
545 sfsp->f_bsize, blocksize));
547 xo_emit(" {:used-percent/%5.0f}{U:%%}",
548 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
550 inodes = sfsp->f_files;
551 used = inodes - sfsp->f_ffree;
554 prthumanvalinode(" {:inodes-used/%5s}", used);
555 prthumanvalinode(" {:inodes-free/%5s}", sfsp->f_ffree);
558 format = " {:inodes-used/%*j'd} {:inodes-free/%*j'd}";
560 format = " {:inodes-used/%*jd} {:inodes-free/%*jd}";
561 xo_emit(format, mwp->iused, (intmax_t)used,
562 mwp->ifree, (intmax_t)sfsp->f_ffree);
565 xo_emit(" {:inodes-used-percent/ -}{U:} ");
567 xo_emit(" {:inodes-used-percent/%4.0f}{U:%%} ",
568 (double)used / (double)inodes * 100.0);
572 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0)
573 xo_emit(" {:mounted-on}", sfsp->f_mntonname);
575 xo_close_instance("filesystem");
579 addstat(struct statfs *totalfsp, struct statfs *statfsp)
583 bsize = statfsp->f_bsize / totalfsp->f_bsize;
584 totalfsp->f_blocks += statfsp->f_blocks * bsize;
585 totalfsp->f_bfree += statfsp->f_bfree * bsize;
586 totalfsp->f_bavail += statfsp->f_bavail * bsize;
587 totalfsp->f_files += statfsp->f_files;
588 totalfsp->f_ffree += statfsp->f_ffree;
592 * Update the maximum field-width information in `mwp' based on
593 * the file system specified by `sfsp'.
596 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp)
598 static long blocksize = 0;
602 getbsize(&dummy, &blocksize);
604 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
605 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename));
606 mwp->total = imax(mwp->total, int64width(
607 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize)));
608 mwp->used = imax(mwp->used,
609 int64width(fsbtoblk((int64_t)sfsp->f_blocks -
610 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize)));
611 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
612 sfsp->f_bsize, blocksize)));
613 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files -
615 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
618 /* Return the width in characters of the specified value. */
620 int64width(int64_t val)
625 /* Negative or zero values require one extra digit. */
643 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n"
644 " [file | filesystem ...]\n");
651 char *str, *strptr, **listptr;
652 struct xvfsconf *xvfsp, *keep_xvfsp;
654 int cnt, i, maxvfsconf;
656 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
657 xo_warn("sysctl(vfs.conflist)");
660 xvfsp = malloc(buflen);
662 xo_warnx("malloc failed");
666 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
667 xo_warn("sysctl(vfs.conflist)");
671 maxvfsconf = buflen / sizeof(struct xvfsconf);
673 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
674 xo_warnx("malloc failed");
679 for (cnt = 0, i = 0; i < maxvfsconf; i++) {
680 if (xvfsp->vfc_flags & VFCF_NETWORK) {
681 listptr[cnt++] = strdup(xvfsp->vfc_name);
682 if (listptr[cnt-1] == NULL) {
683 xo_warnx("malloc failed");
693 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
695 xo_warnx("malloc failed");
701 *str = 'n'; *(str + 1) = 'o';
702 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
703 strlcpy(strptr, listptr[i], 32);
704 strptr += strlen(listptr[i]);