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;
119 const char **vfslist;
124 (void)setlocale(LC_ALL, "");
125 memset(&maxwidths, 0, sizeof(maxwidths));
126 memset(&totalbuf, 0, sizeof(totalbuf));
127 totalbuf.f_bsize = DEV_BSIZE;
128 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN);
131 argc = xo_parse_args(argc, argv);
135 while ((ch = getopt_long(argc, argv, "+abcgHhiklmnPt:T,", long_options,
145 * POSIX specifically discusses the behavior of
146 * both -k and -P. It states that the blocksize should
147 * be set to 1024. Thus, if this occurs, simply break
148 * rather than clobbering the old blocksize.
152 setenv("BLOCKSIZE", "512", 1);
159 setenv("BLOCKSIZE", "1g", 1);
173 setenv("BLOCKSIZE", "1024", 1);
177 /* Ignore duplicate -l */
181 xo_errx(1, "-l and -t are mutually exclusive.");
182 vfslist = makevfslist(makenetvfslist());
186 setenv("BLOCKSIZE", "1m", 1);
194 xo_errx(1, "-l and -t are mutually exclusive.");
196 xo_errx(1, "only one -t option may be specified");
198 vfslist = makevfslist(optarg);
215 /* everything (modulo -t) */
216 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
217 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
219 /* just the filesystems specified on the command line */
220 mntbuf = malloc(argc * sizeof(*mntbuf));
222 xo_err(1, "malloc()");
224 /* continued in for loop below */
227 xo_open_container("storage-system-information");
228 xo_open_list("filesystem");
230 /* iterate through specified filesystems */
231 for (; *argv; argv++) {
232 if (stat(*argv, &stbuf) < 0) {
233 if ((mntpt = getmntpt(*argv)) == NULL) {
234 xo_warn("%s", *argv);
238 } else if (S_ISCHR(stbuf.st_mode)) {
239 mntpt = getmntpt(*argv);
241 xo_warnx("%s: not mounted", *argv);
250 * Statfs does not take a `wait' flag, so we cannot
251 * implement nflag here.
253 if (statfs(mntpt, &statfsbuf) < 0) {
254 xo_warn("%s", mntpt);
260 * Check to make sure the arguments we've been given are
261 * satisfied. Return an error if we have been asked to
262 * list a mount point that does not match the other args
263 * we've been given (-l, -t, etc.).
265 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
270 /* the user asked for it, so ignore the ignore flag */
271 statfsbuf.f_flags &= ~MNT_IGNORE;
274 mntbuf[mntsize++] = statfsbuf;
277 memset(&maxwidths, 0, sizeof(maxwidths));
278 for (i = 0; i < mntsize; i++) {
279 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) {
280 update_maxwidths(&maxwidths, &mntbuf[i]);
282 addstat(&totalbuf, &mntbuf[i]);
285 for (i = 0; i < mntsize; i++)
286 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
287 prtstat(&mntbuf[i], &maxwidths);
289 xo_close_list("filesystem");
292 prtstat(&totalbuf, &maxwidths);
294 xo_close_container("storage-system-information");
300 getmntpt(const char *name)
303 struct statfs *mntbuf;
305 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
306 for (i = 0; i < mntsize; i++) {
307 if (!strcmp(mntbuf[i].f_mntfromname, name))
308 return (mntbuf[i].f_mntonname);
314 * Make a pass over the file system info in ``mntbuf'' filtering out
315 * file system types not in vfslist and possibly re-stating to get
316 * current (not cached) info. Returns the new count of valid statfs bufs.
319 regetmntinfo(struct statfs **mntbufp, long mntsize, const char **vfslist)
322 struct statfs *mntbuf;
325 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
328 for (j = 0, i = 0; i < mntsize; i++) {
329 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
332 * XXX statfs(2) can fail for various reasons. It may be
333 * possible that the user does not have access to the
334 * pathname, if this happens, we will fall back on
335 * "stale" filesystem statistics.
337 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]);
338 if (nflag || error < 0)
341 xo_warnx("%s stats possibly stale",
342 mntbuf[i].f_mntonname);
343 mntbuf[j] = mntbuf[i];
351 prthuman(const struct statfs *sfsp, int64_t used)
354 prthumanval(" {:blocks/%6s}", sfsp->f_blocks * sfsp->f_bsize);
355 prthumanval(" {:used/%6s}", used * sfsp->f_bsize);
356 prthumanval(" {:available/%6s}", sfsp->f_bavail * sfsp->f_bsize);
360 prthumanval(const char *fmt, int64_t bytes)
365 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
366 if (hflag == UNITS_SI)
367 flags |= HN_DIVISOR_1000;
369 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
370 bytes, "", HN_AUTOSCALE, flags);
372 xo_attr("value", "%lld", (long long) bytes);
377 * Print an inode count in "human-readable" format.
380 prthumanvalinode(const char *fmt, int64_t bytes)
385 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
387 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
388 bytes, "", HN_AUTOSCALE, flags);
390 xo_attr("value", "%lld", (long long) bytes);
395 * Convert statfs returned file system size into BLOCKSIZE units.
398 fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
400 return (num * (intmax_t) fsbs / (int64_t) bs);
404 * Print out status about a file system.
407 prtstat(struct statfs *sfsp, struct maxwidths *mwp)
409 static long blocksize;
410 static int headerlen, timesthrough = 0;
411 static const char *header;
412 int64_t used, availblks, inodes;
415 if (++timesthrough == 1) {
416 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
417 mwp->fstype = imax(mwp->fstype, (int)strlen("Type"));
418 if (thousands) { /* make space for commas */
419 mwp->total += (mwp->total - 1) / 3;
420 mwp->used += (mwp->used - 1) / 3;
421 mwp->avail += (mwp->avail - 1) / 3;
422 mwp->iused += (mwp->iused - 1) / 3;
423 mwp->ifree += (mwp->ifree - 1) / 3;
427 mwp->total = mwp->used = mwp->avail =
430 header = getbsize(&headerlen, &blocksize);
431 mwp->total = imax(mwp->total, headerlen);
433 mwp->used = imax(mwp->used, (int)strlen("Used"));
434 mwp->avail = imax(mwp->avail, (int)strlen("Avail"));
436 xo_emit("{T:/%-*s}", mwp->mntfrom, "Filesystem");
438 xo_emit(" {T:/%-*s}", mwp->fstype, "Type");
439 xo_emit(" {T:/%*s} {T:/%*s} {T:/%*s} {T:Capacity}",
441 mwp->used, "Used", mwp->avail, "Avail");
443 mwp->iused = imax(hflag ? 0 : mwp->iused,
444 (int)strlen(" iused"));
445 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
446 (int)strlen("ifree"));
447 xo_emit(" {T:/%*s} {T:/%*s} {T:\%iused}",
448 mwp->iused - 2, "iused", mwp->ifree, "ifree");
450 xo_emit(" {T:Mounted on}\n");
453 xo_open_instance("filesystem");
454 /* Check for 0 block size. Can this happen? */
455 if (sfsp->f_bsize == 0) {
456 xo_warnx ("File system %s does not have a block size, assuming 512.",
460 xo_emit("{tk:name/%-*s}", mwp->mntfrom, sfsp->f_mntfromname);
462 xo_emit(" {:type/%-*s}", mwp->fstype, sfsp->f_fstypename);
463 used = sfsp->f_blocks - sfsp->f_bfree;
464 availblks = sfsp->f_bavail + used;
466 prthuman(sfsp, used);
469 format = " {t:total-blocks/%*j'd} {t:used-blocks/%*j'd} "
470 "{t:available-blocks/%*j'd}";
472 format = " {t:total-blocks/%*jd} {t:used-blocks/%*jd} "
473 "{t:available-blocks/%*jd}";
475 mwp->total, fsbtoblk(sfsp->f_blocks,
476 sfsp->f_bsize, blocksize),
477 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
478 mwp->avail, fsbtoblk(sfsp->f_bavail,
479 sfsp->f_bsize, blocksize));
481 xo_emit(" {:used-percent/%5.0f}{U:%%}",
482 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
484 inodes = sfsp->f_files;
485 used = inodes - sfsp->f_ffree;
488 prthumanvalinode(" {:inodes-used/%5s}", used);
489 prthumanvalinode(" {:inodes-free/%5s}", sfsp->f_ffree);
492 format = " {:inodes-used/%*j'd} {:inodes-free/%*j'd}";
494 format = " {:inodes-used/%*jd} {:inodes-free/%*jd}";
495 xo_emit(format, mwp->iused, (intmax_t)used,
496 mwp->ifree, (intmax_t)sfsp->f_ffree);
498 xo_emit(" {:inodes-used-percent/%4.0f}{U:%%} ",
499 inodes == 0 ? 100.0 :
500 (double)used / (double)inodes * 100.0);
503 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0)
504 xo_emit(" {:mounted-on}", sfsp->f_mntonname);
506 xo_close_instance("filesystem");
510 addstat(struct statfs *totalfsp, struct statfs *statfsp)
514 bsize = statfsp->f_bsize / totalfsp->f_bsize;
515 totalfsp->f_blocks += statfsp->f_blocks * bsize;
516 totalfsp->f_bfree += statfsp->f_bfree * bsize;
517 totalfsp->f_bavail += statfsp->f_bavail * bsize;
518 totalfsp->f_files += statfsp->f_files;
519 totalfsp->f_ffree += statfsp->f_ffree;
523 * Update the maximum field-width information in `mwp' based on
524 * the file system specified by `sfsp'.
527 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp)
529 static long blocksize = 0;
533 getbsize(&dummy, &blocksize);
535 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
536 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename));
537 mwp->total = imax(mwp->total, int64width(
538 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize)));
539 mwp->used = imax(mwp->used,
540 int64width(fsbtoblk((int64_t)sfsp->f_blocks -
541 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize)));
542 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
543 sfsp->f_bsize, blocksize)));
544 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files -
546 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
549 /* Return the width in characters of the specified value. */
551 int64width(int64_t val)
556 /* Negative or zero values require one extra digit. */
574 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n"
575 " [file | filesystem ...]\n");
582 char *str, *strptr, **listptr;
583 struct xvfsconf *xvfsp, *keep_xvfsp;
585 int cnt, i, maxvfsconf;
587 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
588 xo_warn("sysctl(vfs.conflist)");
591 xvfsp = malloc(buflen);
593 xo_warnx("malloc failed");
597 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
598 xo_warn("sysctl(vfs.conflist)");
602 maxvfsconf = buflen / sizeof(struct xvfsconf);
604 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
605 xo_warnx("malloc failed");
610 for (cnt = 0, i = 0; i < maxvfsconf; i++) {
611 if (xvfsp->vfc_flags & VFCF_NETWORK) {
612 listptr[cnt++] = strdup(xvfsp->vfc_name);
613 if (listptr[cnt-1] == NULL) {
614 xo_warnx("malloc failed");
624 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
626 xo_warnx("malloc failed");
632 *str = 'n'; *(str + 1) = 'o';
633 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
634 strlcpy(strptr, listptr[i], 32);
635 strptr += strlen(listptr[i]);