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>
69 /* Maximum widths of various fields. */
80 static void addstat(struct statfs *, struct statfs *);
81 static char *getmntpt(const char *);
82 static int int64width(int64_t);
83 static char *makenetvfslist(void);
84 static void prthuman(const struct statfs *, int64_t);
85 static void prthumanval(int64_t);
86 static intmax_t fsbtoblk(int64_t, uint64_t, u_long);
87 static void prtstat(struct statfs *, struct maxwidths *);
88 static size_t regetmntinfo(struct statfs **, long, const char **);
89 static void update_maxwidths(struct maxwidths *, const struct statfs *);
90 static void usage(void);
95 return (a > b ? a : b);
98 static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag;
100 static struct ufs_args mdev;
103 main(int argc, char *argv[])
106 struct statfs statfsbuf, totalbuf;
107 struct maxwidths maxwidths;
108 struct statfs *mntbuf;
110 char *mntpath, *mntpt;
111 const char **vfslist;
116 (void)setlocale(LC_ALL, "");
117 memset(&maxwidths, 0, sizeof(maxwidths));
118 memset(&totalbuf, 0, sizeof(totalbuf));
119 totalbuf.f_bsize = DEV_BSIZE;
120 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN);
122 while ((ch = getopt(argc, argv, "abcgHhiklmnPt:T,")) != -1)
131 * POSIX specifically discusses the behavior of
132 * both -k and -P. It states that the blocksize should
133 * be set to 1024. Thus, if this occurs, simply break
134 * rather than clobbering the old blocksize.
138 setenv("BLOCKSIZE", "512", 1);
145 setenv("BLOCKSIZE", "1g", 1);
159 setenv("BLOCKSIZE", "1024", 1);
164 errx(1, "-l and -t are mutually exclusive.");
165 vfslist = makevfslist(makenetvfslist());
169 setenv("BLOCKSIZE", "1m", 1);
177 errx(1, "-l and -t are mutually exclusive.");
179 errx(1, "only one -t option may be specified");
181 vfslist = makevfslist(optarg);
198 /* everything (modulo -t) */
199 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
200 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
202 /* just the filesystems specified on the command line */
203 mntbuf = malloc(argc * sizeof(*mntbuf));
207 /* continued in for loop below */
210 /* iterate through specified filesystems */
211 for (; *argv; argv++) {
212 if (stat(*argv, &stbuf) < 0) {
213 if ((mntpt = getmntpt(*argv)) == NULL) {
218 } else if (S_ISCHR(stbuf.st_mode)) {
219 if ((mntpt = getmntpt(*argv)) == NULL) {
221 mntpath = strdup("/tmp/df.XXXXXX");
222 if (mntpath == NULL) {
223 warn("strdup failed");
227 mntpt = mkdtemp(mntpath);
229 warn("mkdtemp(\"%s\") failed", mntpath);
234 if (mount(fstype, mntpt, MNT_RDONLY,
241 } else if (statfs(mntpt, &statfsbuf) == 0) {
242 statfsbuf.f_mntonname[0] = '\0';
243 prtstat(&statfsbuf, &maxwidths);
245 addstat(&totalbuf, &statfsbuf);
250 (void)unmount(mntpt, 0);
259 * Statfs does not take a `wait' flag, so we cannot
260 * implement nflag here.
262 if (statfs(mntpt, &statfsbuf) < 0) {
269 * Check to make sure the arguments we've been given are
270 * satisfied. Return an error if we have been asked to
271 * list a mount point that does not match the other args
272 * we've been given (-l, -t, etc.).
274 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
279 /* the user asked for it, so ignore the ignore flag */
280 statfsbuf.f_flags &= ~MNT_IGNORE;
283 mntbuf[mntsize++] = statfsbuf;
286 memset(&maxwidths, 0, sizeof(maxwidths));
287 for (i = 0; i < mntsize; i++) {
288 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0) {
289 update_maxwidths(&maxwidths, &mntbuf[i]);
291 addstat(&totalbuf, &mntbuf[i]);
294 for (i = 0; i < mntsize; i++)
295 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
296 prtstat(&mntbuf[i], &maxwidths);
298 prtstat(&totalbuf, &maxwidths);
303 getmntpt(const char *name)
306 struct statfs *mntbuf;
308 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
309 for (i = 0; i < mntsize; i++) {
310 if (!strcmp(mntbuf[i].f_mntfromname, name))
311 return (mntbuf[i].f_mntonname);
317 * Make a pass over the file system info in ``mntbuf'' filtering out
318 * file system types not in vfslist and possibly re-stating to get
319 * current (not cached) info. Returns the new count of valid statfs bufs.
322 regetmntinfo(struct statfs **mntbufp, long mntsize, const char **vfslist)
325 struct statfs *mntbuf;
328 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
331 for (j = 0, i = 0; i < mntsize; i++) {
332 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
335 * XXX statfs(2) can fail for various reasons. It may be
336 * possible that the user does not have access to the
337 * pathname, if this happens, we will fall back on
338 * "stale" filesystem statistics.
340 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]);
341 if (nflag || error < 0)
344 warnx("%s stats possibly stale",
345 mntbuf[i].f_mntonname);
346 mntbuf[j] = mntbuf[i];
354 prthuman(const struct statfs *sfsp, int64_t used)
357 prthumanval(sfsp->f_blocks * sfsp->f_bsize);
358 prthumanval(used * sfsp->f_bsize);
359 prthumanval(sfsp->f_bavail * sfsp->f_bsize);
363 prthumanval(int64_t bytes)
368 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
369 if (hflag == UNITS_SI)
370 flags |= HN_DIVISOR_1000;
372 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
373 bytes, "", HN_AUTOSCALE, flags);
375 (void)printf(" %6s", buf);
379 * Print an inode count in "human-readable" format.
382 prthumanvalinode(int64_t bytes)
387 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
389 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
390 bytes, "", HN_AUTOSCALE, flags);
392 (void)printf(" %5s", buf);
396 * Convert statfs returned file system size into BLOCKSIZE units.
399 fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
401 return (num * (intmax_t) fsbs / (int64_t) bs);
405 * Print out status about a file system.
408 prtstat(struct statfs *sfsp, struct maxwidths *mwp)
410 static long blocksize;
411 static int headerlen, timesthrough = 0;
412 static const char *header;
413 int64_t used, availblks, inodes;
416 if (++timesthrough == 1) {
417 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
418 mwp->fstype = imax(mwp->fstype, (int)strlen("Type"));
419 if (thousands) { /* make space for commas */
420 mwp->total += (mwp->total - 1) / 3;
421 mwp->used += (mwp->used - 1) / 3;
422 mwp->avail += (mwp->avail - 1) / 3;
423 mwp->iused += (mwp->iused - 1) / 3;
424 mwp->ifree += (mwp->ifree - 1) / 3;
428 mwp->total = mwp->used = mwp->avail =
431 header = getbsize(&headerlen, &blocksize);
432 mwp->total = imax(mwp->total, headerlen);
434 mwp->used = imax(mwp->used, (int)strlen("Used"));
435 mwp->avail = imax(mwp->avail, (int)strlen("Avail"));
437 (void)printf("%-*s", mwp->mntfrom, "Filesystem");
439 (void)printf(" %-*s", mwp->fstype, "Type");
440 (void)printf(" %*s %*s %*s Capacity", mwp->total, header,
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 (void)printf(" %*s %*s %%iused",
448 mwp->iused - 2, "iused", mwp->ifree, "ifree");
450 (void)printf(" Mounted on\n");
452 /* Check for 0 block size. Can this happen? */
453 if (sfsp->f_bsize == 0) {
454 warnx ("File system %s does not have a block size, assuming 512.",
458 (void)printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
460 (void)printf(" %-*s", mwp->fstype, sfsp->f_fstypename);
461 used = sfsp->f_blocks - sfsp->f_bfree;
462 availblks = sfsp->f_bavail + used;
464 prthuman(sfsp, used);
467 format = " %*j'd %*j'd %*j'd";
469 format = " %*jd %*jd %*jd";
471 mwp->total, fsbtoblk(sfsp->f_blocks,
472 sfsp->f_bsize, blocksize),
473 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
474 mwp->avail, fsbtoblk(sfsp->f_bavail,
475 sfsp->f_bsize, blocksize));
477 (void)printf(" %5.0f%%",
478 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
480 inodes = sfsp->f_files;
481 used = inodes - sfsp->f_ffree;
484 prthumanvalinode(used);
485 prthumanvalinode(sfsp->f_ffree);
488 format = " %*j'd %*j'd";
490 format = " %*jd %*jd";
491 (void)printf(format, mwp->iused, (intmax_t)used,
492 mwp->ifree, (intmax_t)sfsp->f_ffree);
494 (void)printf(" %4.0f%% ", inodes == 0 ? 100.0 :
495 (double)used / (double)inodes * 100.0);
498 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0)
499 (void)printf(" %s", sfsp->f_mntonname);
504 addstat(struct statfs *totalfsp, struct statfs *statfsp)
508 bsize = statfsp->f_bsize / totalfsp->f_bsize;
509 totalfsp->f_blocks += statfsp->f_blocks * bsize;
510 totalfsp->f_bfree += statfsp->f_bfree * bsize;
511 totalfsp->f_bavail += statfsp->f_bavail * bsize;
512 totalfsp->f_files += statfsp->f_files;
513 totalfsp->f_ffree += statfsp->f_ffree;
517 * Update the maximum field-width information in `mwp' based on
518 * the file system specified by `sfsp'.
521 update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp)
523 static long blocksize = 0;
527 getbsize(&dummy, &blocksize);
529 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
530 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename));
531 mwp->total = imax(mwp->total, int64width(
532 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize)));
533 mwp->used = imax(mwp->used,
534 int64width(fsbtoblk((int64_t)sfsp->f_blocks -
535 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize)));
536 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
537 sfsp->f_bsize, blocksize)));
538 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files -
540 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
543 /* Return the width in characters of the specified value. */
545 int64width(int64_t val)
550 /* Negative or zero values require one extra digit. */
567 (void)fprintf(stderr,
568 "usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [-,]\n"
569 " [file | filesystem ...]\n");
576 char *str, *strptr, **listptr;
577 struct xvfsconf *xvfsp, *keep_xvfsp;
579 int cnt, i, maxvfsconf;
581 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
582 warn("sysctl(vfs.conflist)");
585 xvfsp = malloc(buflen);
587 warnx("malloc failed");
591 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
592 warn("sysctl(vfs.conflist)");
596 maxvfsconf = buflen / sizeof(struct xvfsconf);
598 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
599 warnx("malloc failed");
604 for (cnt = 0, i = 0; i < maxvfsconf; i++) {
605 if (xvfsp->vfc_flags & VFCF_NETWORK) {
606 listptr[cnt++] = strdup(xvfsp->vfc_name);
607 if (listptr[cnt-1] == NULL) {
608 warnx("malloc failed");
618 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
620 warnx("malloc failed");
626 *str = 'n'; *(str + 1) = 'o';
627 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
628 strlcpy(strptr, listptr[i], 32);
629 strptr += strlen(listptr[i]);