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.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 static const char copyright[] =
38 "@(#) Copyright (c) 1980, 1990, 1993, 1994\n\
39 The Regents of the University of California. All rights reserved.\n";
43 static char sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/param.h>
51 #include <sys/mount.h>
52 #include <sys/sysctl.h>
53 #include <ufs/ufs/ufsmount.h>
70 /* Maximum widths of various fields. */
81 static void addstat(struct statfs *, struct statfs *);
82 static char *getmntpt(const char *);
83 static int int64width(int64_t);
84 static char *makenetvfslist(void);
85 static void prthuman(const struct statfs *, int64_t);
86 static void prthumanval(const char *, int64_t);
87 static intmax_t fsbtoblk(int64_t, uint64_t, u_long);
88 static void prtstat(struct statfs *, struct maxwidths *);
89 static size_t regetmntinfo(struct statfs **, long, const char **);
90 static void update_maxwidths(struct maxwidths *, const struct statfs *);
91 static void usage(void);
96 return (a > b ? a : b);
99 static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag;
100 static int thousands;
101 static struct ufs_args mdev;
104 main(int argc, char *argv[])
107 struct statfs statfsbuf, totalbuf;
108 struct maxwidths maxwidths;
109 struct statfs *mntbuf;
111 char *mntpath, *mntpt;
112 const char **vfslist;
117 (void)setlocale(LC_ALL, "");
118 memset(&maxwidths, 0, sizeof(maxwidths));
119 memset(&totalbuf, 0, sizeof(totalbuf));
120 totalbuf.f_bsize = DEV_BSIZE;
121 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN);
124 argc = xo_parse_args(argc, argv);
128 while ((ch = getopt(argc, argv, "abcgHhiklmnPt:T,")) != -1)
137 * POSIX specifically discusses the behavior of
138 * both -k and -P. It states that the blocksize should
139 * be set to 1024. Thus, if this occurs, simply break
140 * rather than clobbering the old blocksize.
144 setenv("BLOCKSIZE", "512", 1);
151 setenv("BLOCKSIZE", "1g", 1);
165 setenv("BLOCKSIZE", "1024", 1);
170 xo_errx(1, "-l and -t are mutually exclusive.");
171 vfslist = makevfslist(makenetvfslist());
175 setenv("BLOCKSIZE", "1m", 1);
183 xo_errx(1, "-l and -t are mutually exclusive.");
185 xo_errx(1, "only one -t option may be specified");
187 vfslist = makevfslist(optarg);
204 /* everything (modulo -t) */
205 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
206 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
208 /* just the filesystems specified on the command line */
209 mntbuf = malloc(argc * sizeof(*mntbuf));
211 xo_err(1, "malloc()");
213 /* continued in for loop below */
216 xo_open_container("storage-system-information");
217 xo_open_list("filesystem");
219 /* iterate through specified filesystems */
220 for (; *argv; argv++) {
221 if (stat(*argv, &stbuf) < 0) {
222 if ((mntpt = getmntpt(*argv)) == NULL) {
223 xo_warn("%s", *argv);
227 } else if (S_ISCHR(stbuf.st_mode)) {
228 if ((mntpt = getmntpt(*argv)) == NULL) {
230 mntpath = strdup("/tmp/df.XXXXXX");
231 if (mntpath == NULL) {
232 xo_warn("strdup failed");
236 mntpt = mkdtemp(mntpath);
238 xo_warn("mkdtemp(\"%s\") failed", mntpath);
243 if (mount(fstype, mntpt, MNT_RDONLY,
245 xo_warn("%s", *argv);
250 } else if (statfs(mntpt, &statfsbuf) == 0) {
251 statfsbuf.f_mntonname[0] = '\0';
252 prtstat(&statfsbuf, &maxwidths);
254 addstat(&totalbuf, &statfsbuf);
256 xo_warn("%s", *argv);
259 (void)unmount(mntpt, 0);
268 * Statfs does not take a `wait' flag, so we cannot
269 * implement nflag here.
271 if (statfs(mntpt, &statfsbuf) < 0) {
272 xo_warn("%s", mntpt);
278 * Check to make sure the arguments we've been given are
279 * satisfied. Return an error if we have been asked to
280 * list a mount point that does not match the other args
281 * we've been given (-l, -t, etc.).
283 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
288 /* the user asked for it, so ignore the ignore flag */
289 statfsbuf.f_flags &= ~MNT_IGNORE;
292 mntbuf[mntsize++] = statfsbuf;
295 memset(&maxwidths, 0, sizeof(maxwidths));
296 for (i = 0; i < mntsize; i++) {
297 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) {
298 update_maxwidths(&maxwidths, &mntbuf[i]);
300 addstat(&totalbuf, &mntbuf[i]);
303 for (i = 0; i < mntsize; i++)
304 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
305 prtstat(&mntbuf[i], &maxwidths);
307 xo_close_list("filesystem");
310 prtstat(&totalbuf, &maxwidths);
312 xo_close_container("storage-system-information");
318 getmntpt(const char *name)
321 struct statfs *mntbuf;
323 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
324 for (i = 0; i < mntsize; i++) {
325 if (!strcmp(mntbuf[i].f_mntfromname, name))
326 return (mntbuf[i].f_mntonname);
332 * Make a pass over the file system info in ``mntbuf'' filtering out
333 * file system types not in vfslist and possibly re-stating to get
334 * current (not cached) info. Returns the new count of valid statfs bufs.
337 regetmntinfo(struct statfs **mntbufp, long mntsize, const char **vfslist)
340 struct statfs *mntbuf;
343 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
346 for (j = 0, i = 0; i < mntsize; i++) {
347 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
350 * XXX statfs(2) can fail for various reasons. It may be
351 * possible that the user does not have access to the
352 * pathname, if this happens, we will fall back on
353 * "stale" filesystem statistics.
355 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]);
356 if (nflag || error < 0)
359 xo_warnx("%s stats possibly stale",
360 mntbuf[i].f_mntonname);
361 mntbuf[j] = mntbuf[i];
369 prthuman(const struct statfs *sfsp, int64_t used)
372 prthumanval(" {:blocks/%6s}", sfsp->f_blocks * sfsp->f_bsize);
373 prthumanval(" {:used/%6s}", used * sfsp->f_bsize);
374 prthumanval(" {:available/%6s}", sfsp->f_bavail * sfsp->f_bsize);
378 prthumanval(const char *fmt, int64_t bytes)
383 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
384 if (hflag == UNITS_SI)
385 flags |= 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 * Print an inode count in "human-readable" format.
398 prthumanvalinode(const char *fmt, int64_t bytes)
403 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
405 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
406 bytes, "", HN_AUTOSCALE, flags);
408 xo_attr("value", "%lld", (long long) bytes);
413 * Convert statfs returned file system size into BLOCKSIZE units.
416 fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
418 return (num * (intmax_t) fsbs / (int64_t) bs);
422 * Print out status about a file system.
425 prtstat(struct statfs *sfsp, struct maxwidths *mwp)
427 static long blocksize;
428 static int headerlen, timesthrough = 0;
429 static const char *header;
430 int64_t used, availblks, inodes;
433 if (++timesthrough == 1) {
434 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
435 mwp->fstype = imax(mwp->fstype, (int)strlen("Type"));
436 if (thousands) { /* make space for commas */
437 mwp->total += (mwp->total - 1) / 3;
438 mwp->used += (mwp->used - 1) / 3;
439 mwp->avail += (mwp->avail - 1) / 3;
440 mwp->iused += (mwp->iused - 1) / 3;
441 mwp->ifree += (mwp->ifree - 1) / 3;
445 mwp->total = mwp->used = mwp->avail =
448 header = getbsize(&headerlen, &blocksize);
449 mwp->total = imax(mwp->total, headerlen);
451 mwp->used = imax(mwp->used, (int)strlen("Used"));
452 mwp->avail = imax(mwp->avail, (int)strlen("Avail"));
454 xo_emit("{T:/%-*s}", mwp->mntfrom, "Filesystem");
456 xo_emit(" {T:/%-*s}", mwp->fstype, "Type");
457 xo_emit(" {T:/%*s} {T:/%*s} {T:/%*s} Capacity",
459 mwp->used, "Used", mwp->avail, "Avail");
461 mwp->iused = imax(hflag ? 0 : mwp->iused,
462 (int)strlen(" iused"));
463 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
464 (int)strlen("ifree"));
465 xo_emit(" {T:/%*s} {T:/%*s} {T:\%iused}",
466 mwp->iused - 2, "iused", mwp->ifree, "ifree");
468 xo_emit(" {T:Mounted on}\n");
471 xo_open_instance("filesystem");
472 /* Check for 0 block size. Can this happen? */
473 if (sfsp->f_bsize == 0) {
474 xo_warnx ("File system %s does not have a block size, assuming 512.",
478 xo_emit("{tk:name/%-*s}", mwp->mntfrom, sfsp->f_mntfromname);
480 xo_emit(" {:type/%-*s}", mwp->fstype, sfsp->f_fstypename);
481 used = sfsp->f_blocks - sfsp->f_bfree;
482 availblks = sfsp->f_bavail + used;
484 prthuman(sfsp, used);
487 format = " {t:total-blocks/%*j'd} {t:used-blocks/%*j'd} "
488 "{t:available-blocks/%*j'd}";
490 format = " {t:total-blocks/%*jd} {t:used-blocks/%*jd} "
491 "{t:available-blocks/%*jd}";
493 mwp->total, fsbtoblk(sfsp->f_blocks,
494 sfsp->f_bsize, blocksize),
495 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
496 mwp->avail, fsbtoblk(sfsp->f_bavail,
497 sfsp->f_bsize, blocksize));
499 xo_emit(" {:used-percent/%5.0f}{U:%%}",
500 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
502 inodes = sfsp->f_files;
503 used = inodes - sfsp->f_ffree;
506 prthumanvalinode(" {:inodes-used/%5s}", used);
507 prthumanvalinode(" {:inodes-free/%5s}", sfsp->f_ffree);
510 format = " {:inodes-used/%*j'd} {:inodes-free/%*j'd}";
512 format = " {:inodes-used/%*jd} {:inodes-free/%*jd}";
513 xo_emit(format, mwp->iused, (intmax_t)used,
514 mwp->ifree, (intmax_t)sfsp->f_ffree);
516 xo_emit(" {:inodes-used-percent/%4.0f}{U:%%} ",
517 inodes == 0 ? 100.0 :
518 (double)used / (double)inodes * 100.0);
521 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0)
522 xo_emit(" {:mounted-on}", sfsp->f_mntonname);
524 xo_close_instance("filesystem");
528 addstat(struct statfs *totalfsp, struct statfs *statfsp)
532 bsize = statfsp->f_bsize / totalfsp->f_bsize;
533 totalfsp->f_blocks += statfsp->f_blocks * bsize;
534 totalfsp->f_bfree += statfsp->f_bfree * bsize;
535 totalfsp->f_bavail += statfsp->f_bavail * bsize;
536 totalfsp->f_files += statfsp->f_files;
537 totalfsp->f_ffree += statfsp->f_ffree;
541 * Update the maximum field-width information in `mwp' based on
542 * the file system specified by `sfsp'.
545 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp)
547 static long blocksize = 0;
551 getbsize(&dummy, &blocksize);
553 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
554 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename));
555 mwp->total = imax(mwp->total, int64width(
556 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize)));
557 mwp->used = imax(mwp->used,
558 int64width(fsbtoblk((int64_t)sfsp->f_blocks -
559 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize)));
560 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
561 sfsp->f_bsize, blocksize)));
562 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files -
564 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
567 /* Return the width in characters of the specified value. */
569 int64width(int64_t val)
574 /* Negative or zero values require one extra digit. */
592 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n"
593 " [file | filesystem ...]\n");
600 char *str, *strptr, **listptr;
601 struct xvfsconf *xvfsp, *keep_xvfsp;
603 int cnt, i, maxvfsconf;
605 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
606 xo_warn("sysctl(vfs.conflist)");
609 xvfsp = malloc(buflen);
611 xo_warnx("malloc failed");
615 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
616 xo_warn("sysctl(vfs.conflist)");
620 maxvfsconf = buflen / sizeof(struct xvfsconf);
622 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
623 xo_warnx("malloc failed");
628 for (cnt = 0, i = 0; i < maxvfsconf; i++) {
629 if (xvfsp->vfc_flags & VFCF_NETWORK) {
630 listptr[cnt++] = strdup(xvfsp->vfc_name);
631 if (listptr[cnt-1] == NULL) {
632 xo_warnx("malloc failed");
642 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
644 xo_warnx("malloc failed");
650 *str = 'n'; *(str + 1) = 'o';
651 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
652 strlcpy(strptr, listptr[i], 32);
653 strptr += strlen(listptr[i]);