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>
72 /* Maximum widths of various fields. */
83 static void addstat(struct statfs *, struct statfs *);
84 static char *getmntpt(const 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, const char **);
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;
104 static const struct option long_options[] =
106 { "si", no_argument, NULL, 'H' },
107 { NULL, no_argument, NULL, 0 },
111 main(int argc, char *argv[])
114 struct statfs statfsbuf, totalbuf;
115 struct maxwidths maxwidths;
116 struct statfs *mntbuf;
118 const char **vfslist;
122 (void)setlocale(LC_ALL, "");
123 memset(&maxwidths, 0, sizeof(maxwidths));
124 memset(&totalbuf, 0, sizeof(totalbuf));
125 totalbuf.f_bsize = DEV_BSIZE;
126 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 */
179 xo_errx(1, "-l and -t are mutually exclusive.");
180 vfslist = makevfslist(makenetvfslist());
184 setenv("BLOCKSIZE", "1m", 1);
192 xo_errx(1, "-l and -t are mutually exclusive.");
194 xo_errx(1, "only one -t option may be specified");
195 vfslist = makevfslist(optarg);
212 /* everything (modulo -t) */
213 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
214 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
216 /* just the filesystems specified on the command line */
217 mntbuf = malloc(argc * sizeof(*mntbuf));
219 xo_err(1, "malloc()");
221 /* continued in for loop below */
224 xo_open_container("storage-system-information");
225 xo_open_list("filesystem");
227 /* iterate through specified filesystems */
228 for (; *argv; argv++) {
229 if (stat(*argv, &stbuf) < 0) {
230 if ((mntpt = getmntpt(*argv)) == NULL) {
231 xo_warn("%s", *argv);
235 } else if (S_ISCHR(stbuf.st_mode)) {
236 mntpt = getmntpt(*argv);
238 xo_warnx("%s: not mounted", *argv);
247 * Statfs does not take a `wait' flag, so we cannot
248 * implement nflag here.
250 if (statfs(mntpt, &statfsbuf) < 0) {
251 xo_warn("%s", mntpt);
257 * Check to make sure the arguments we've been given are
258 * satisfied. Return an error if we have been asked to
259 * list a mount point that does not match the other args
260 * we've been given (-l, -t, etc.).
262 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
267 /* the user asked for it, so ignore the ignore flag */
268 statfsbuf.f_flags &= ~MNT_IGNORE;
271 mntbuf[mntsize++] = statfsbuf;
274 memset(&maxwidths, 0, sizeof(maxwidths));
275 for (i = 0; i < mntsize; i++) {
276 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) {
277 update_maxwidths(&maxwidths, &mntbuf[i]);
279 addstat(&totalbuf, &mntbuf[i]);
282 for (i = 0; i < mntsize; i++)
283 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
284 prtstat(&mntbuf[i], &maxwidths);
286 xo_close_list("filesystem");
289 prtstat(&totalbuf, &maxwidths);
291 xo_close_container("storage-system-information");
297 getmntpt(const char *name)
300 struct statfs *mntbuf;
302 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
303 for (i = 0; i < mntsize; i++) {
304 if (!strcmp(mntbuf[i].f_mntfromname, name))
305 return (mntbuf[i].f_mntonname);
311 * Make a pass over the file system info in ``mntbuf'' filtering out
312 * file system types not in vfslist and possibly re-stating to get
313 * current (not cached) info. Returns the new count of valid statfs bufs.
316 regetmntinfo(struct statfs **mntbufp, long mntsize, const char **vfslist)
319 struct statfs *mntbuf;
322 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
325 for (j = 0, i = 0; i < mntsize; i++) {
326 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
329 * XXX statfs(2) can fail for various reasons. It may be
330 * possible that the user does not have access to the
331 * pathname, if this happens, we will fall back on
332 * "stale" filesystem statistics.
334 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]);
335 if (nflag || error < 0)
338 xo_warnx("%s stats possibly stale",
339 mntbuf[i].f_mntonname);
340 mntbuf[j] = mntbuf[i];
348 prthuman(const struct statfs *sfsp, int64_t used)
351 prthumanval(" {:blocks/%6s}", sfsp->f_blocks * sfsp->f_bsize);
352 prthumanval(" {:used/%6s}", used * sfsp->f_bsize);
353 prthumanval(" {:available/%6s}", sfsp->f_bavail * sfsp->f_bsize);
357 prthumanval(const char *fmt, int64_t bytes)
362 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
363 if (hflag == UNITS_SI)
364 flags |= HN_DIVISOR_1000;
366 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
367 bytes, "", HN_AUTOSCALE, flags);
369 xo_attr("value", "%lld", (long long) bytes);
374 * Print an inode count in "human-readable" format.
377 prthumanvalinode(const char *fmt, int64_t bytes)
382 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
384 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
385 bytes, "", HN_AUTOSCALE, flags);
387 xo_attr("value", "%lld", (long long) bytes);
392 * Convert statfs returned file system size into BLOCKSIZE units.
395 fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
397 return (num * (intmax_t) fsbs / (int64_t) bs);
401 * Print out status about a file system.
404 prtstat(struct statfs *sfsp, struct maxwidths *mwp)
406 static long blocksize;
407 static int headerlen, timesthrough = 0;
408 static const char *header;
409 int64_t used, availblks, inodes;
412 if (++timesthrough == 1) {
413 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
414 mwp->fstype = imax(mwp->fstype, (int)strlen("Type"));
415 if (thousands) { /* make space for commas */
416 mwp->total += (mwp->total - 1) / 3;
417 mwp->used += (mwp->used - 1) / 3;
418 mwp->avail += (mwp->avail - 1) / 3;
419 mwp->iused += (mwp->iused - 1) / 3;
420 mwp->ifree += (mwp->ifree - 1) / 3;
424 mwp->total = mwp->used = mwp->avail =
427 header = getbsize(&headerlen, &blocksize);
428 mwp->total = imax(mwp->total, headerlen);
430 mwp->used = imax(mwp->used, (int)strlen("Used"));
431 mwp->avail = imax(mwp->avail, (int)strlen("Avail"));
433 xo_emit("{T:/%-*s}", mwp->mntfrom, "Filesystem");
435 xo_emit(" {T:/%-*s}", mwp->fstype, "Type");
436 xo_emit(" {T:/%*s} {T:/%*s} {T:/%*s} {T:Capacity}",
438 mwp->used, "Used", mwp->avail, "Avail");
440 mwp->iused = imax(hflag ? 0 : mwp->iused,
441 (int)strlen(" iused"));
442 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
443 (int)strlen("ifree"));
444 xo_emit(" {T:/%*s} {T:/%*s} {T:\%iused}",
445 mwp->iused - 2, "iused", mwp->ifree, "ifree");
447 xo_emit(" {T:Mounted on}\n");
450 xo_open_instance("filesystem");
451 /* Check for 0 block size. Can this happen? */
452 if (sfsp->f_bsize == 0) {
453 xo_warnx ("File system %s does not have a block size, assuming 512.",
457 xo_emit("{tk:name/%-*s}", mwp->mntfrom, sfsp->f_mntfromname);
459 xo_emit(" {:type/%-*s}", mwp->fstype, sfsp->f_fstypename);
460 used = sfsp->f_blocks - sfsp->f_bfree;
461 availblks = sfsp->f_bavail + used;
463 prthuman(sfsp, used);
466 format = " {t:total-blocks/%*j'd} {t:used-blocks/%*j'd} "
467 "{t:available-blocks/%*j'd}";
469 format = " {t:total-blocks/%*jd} {t:used-blocks/%*jd} "
470 "{t:available-blocks/%*jd}";
472 mwp->total, fsbtoblk(sfsp->f_blocks,
473 sfsp->f_bsize, blocksize),
474 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
475 mwp->avail, fsbtoblk(sfsp->f_bavail,
476 sfsp->f_bsize, blocksize));
478 xo_emit(" {:used-percent/%5.0f}{U:%%}",
479 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
481 inodes = sfsp->f_files;
482 used = inodes - sfsp->f_ffree;
485 prthumanvalinode(" {:inodes-used/%5s}", used);
486 prthumanvalinode(" {:inodes-free/%5s}", sfsp->f_ffree);
489 format = " {:inodes-used/%*j'd} {:inodes-free/%*j'd}";
491 format = " {:inodes-used/%*jd} {:inodes-free/%*jd}";
492 xo_emit(format, mwp->iused, (intmax_t)used,
493 mwp->ifree, (intmax_t)sfsp->f_ffree);
495 xo_emit(" {:inodes-used-percent/%4.0f}{U:%%} ",
496 inodes == 0 ? 100.0 :
497 (double)used / (double)inodes * 100.0);
500 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0)
501 xo_emit(" {:mounted-on}", sfsp->f_mntonname);
503 xo_close_instance("filesystem");
507 addstat(struct statfs *totalfsp, struct statfs *statfsp)
511 bsize = statfsp->f_bsize / totalfsp->f_bsize;
512 totalfsp->f_blocks += statfsp->f_blocks * bsize;
513 totalfsp->f_bfree += statfsp->f_bfree * bsize;
514 totalfsp->f_bavail += statfsp->f_bavail * bsize;
515 totalfsp->f_files += statfsp->f_files;
516 totalfsp->f_ffree += statfsp->f_ffree;
520 * Update the maximum field-width information in `mwp' based on
521 * the file system specified by `sfsp'.
524 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp)
526 static long blocksize = 0;
530 getbsize(&dummy, &blocksize);
532 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
533 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename));
534 mwp->total = imax(mwp->total, int64width(
535 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize)));
536 mwp->used = imax(mwp->used,
537 int64width(fsbtoblk((int64_t)sfsp->f_blocks -
538 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize)));
539 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
540 sfsp->f_bsize, blocksize)));
541 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files -
543 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
546 /* Return the width in characters of the specified value. */
548 int64width(int64_t val)
553 /* Negative or zero values require one extra digit. */
571 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n"
572 " [file | filesystem ...]\n");
579 char *str, *strptr, **listptr;
580 struct xvfsconf *xvfsp, *keep_xvfsp;
582 int cnt, i, maxvfsconf;
584 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
585 xo_warn("sysctl(vfs.conflist)");
588 xvfsp = malloc(buflen);
590 xo_warnx("malloc failed");
594 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
595 xo_warn("sysctl(vfs.conflist)");
599 maxvfsconf = buflen / sizeof(struct xvfsconf);
601 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
602 xo_warnx("malloc failed");
607 for (cnt = 0, i = 0; i < maxvfsconf; i++) {
608 if (xvfsp->vfc_flags & VFCF_NETWORK) {
609 listptr[cnt++] = strdup(xvfsp->vfc_name);
610 if (listptr[cnt-1] == NULL) {
611 xo_warnx("malloc failed");
621 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
623 xo_warnx("malloc failed");
629 *str = 'n'; *(str + 1) = 'o';
630 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
631 strlcpy(strptr, listptr[i], 32);
632 strptr += strlen(listptr[i]);