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 * 3. 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
34 * @(#) Copyright (c) 1980, 1990, 1993, 1994 The Regents of the University of California. All rights reserved.
35 * @(#)df.c 8.9 (Berkeley) 5/8/95
36 * $FreeBSD: src/bin/df/df.c,v 1.23.2.9 2002/07/01 00:14:24 iedowse Exp $
39 #include <sys/param.h>
41 #include <sys/mount.h>
42 #include <sys/sysctl.h>
43 #include <sys/statvfs.h>
45 #include <vfs/ufs/dinode.h>
46 #include <vfs/ufs/ufsmount.h>
63 #define HN_FRACTIONAL HN_DECIMAL
66 /* Maximum widths of various fields. */
78 char **makevfslist(char *);
79 int checkvfsname(const char *, char **);
81 static char *getmntpt(char *);
82 static int quadwidth(int64_t);
83 static char *makenetvfslist(void);
84 static void prthuman(struct statvfs *, int64_t);
85 static void prthumanval(int64_t);
86 static void prtstat(struct statfs *, struct statvfs *, struct maxwidths *);
87 static long regetmntinfo(struct statfs **, struct statvfs **, long, char **);
88 static void update_maxwidths(struct maxwidths *, struct statfs *, struct statvfs *);
89 static void usage(void);
91 int aflag = 0, hflag, iflag, nflag, Tflag;
97 return (a > b ? a : b);
100 static __inline int64_t
101 qmax(int64_t a, int64_t b)
103 return (a > b ? a : b);
107 main(int argc, char **argv)
110 struct statfs statfsbuf, *mntbuf;
111 struct statvfs statvfsbuf, *mntvbuf;
112 struct maxwidths maxwidths;
114 char *mntpath, *mntpt, **vfslist;
121 while ((ch = getopt(argc, argv, "abgHhiklmnPt:T")) != -1)
129 if (setenv("BLOCKSIZE", "512", 1) != 0)
130 warn("setenv: cannot set BLOCKSIZE=512");
134 if (setenv("BLOCKSIZE", "1g", 1) != 0)
135 warn("setenv: cannot set BLOCKSIZE=1g");
148 if (setenv("BLOCKSIZE", "1k", 1) != 0)
149 warn("setenv: cannot set BLOCKSIZE=1k");
154 errx(1, "-l and -t are mutually exclusive.");
155 vfslist = makevfslist(makenetvfslist());
158 if (setenv("BLOCKSIZE", "1m", 1) != 0)
159 warn("setenv: cannot set BLOCKSIZE=1m");
167 errx(1, "only one -t option may be specified");
169 vfslist = makevfslist(optarg);
181 mntsize = getmntvinfo(&mntbuf, &mntvbuf, MNT_NOWAIT);
182 bzero(&maxwidths, sizeof(maxwidths));
183 for (i = 0; i < mntsize; i++)
184 update_maxwidths(&maxwidths, &mntbuf[i], &mntvbuf[i]);
188 mntsize = regetmntinfo(&mntbuf, &mntvbuf, mntsize, vfslist);
189 bzero(&maxwidths, sizeof(maxwidths));
190 for (i = 0; i < mntsize; i++)
191 update_maxwidths(&maxwidths, &mntbuf[i], &mntvbuf[i]);
192 for (i = 0; i < mntsize; i++) {
193 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
194 prtstat(&mntbuf[i], &mntvbuf[i], &maxwidths);
199 for (; *argv; argv++) {
200 if (stat(*argv, &stbuf) < 0) {
201 if ((mntpt = getmntpt(*argv)) == NULL) {
206 } else if (S_ISCHR(stbuf.st_mode)) {
207 if ((mntpt = getmntpt(*argv)) == NULL) {
209 mntpath = strdup("/tmp/df.XXXXXX");
210 if (mntpath == NULL) {
211 warn("strdup failed");
215 mntpt = mkdtemp(mntpath);
217 warn("mkdtemp(\"%s\") failed", mntpath);
222 if (mount(fstype, mntpt, MNT_RDONLY,
229 } else if (statfs(mntpt, &statfsbuf) == 0 &&
230 statvfs(mntpt, &statvfsbuf) == 0) {
231 statfsbuf.f_mntonname[0] = '\0';
232 prtstat(&statfsbuf, &statvfsbuf, &maxwidths);
245 * Statfs does not take a `wait' flag, so we cannot
246 * implement nflag here.
248 if (statfs(mntpt, &statfsbuf) < 0) {
253 if (statvfs(mntpt, &statvfsbuf) < 0) {
259 * Check to make sure the arguments we've been given are
260 * satisfied. Return an error if we have been asked to
261 * list a mount point that does not match the other args
262 * we've been given (-l, -t, etc.).
264 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
270 bzero(&maxwidths, sizeof(maxwidths));
271 update_maxwidths(&maxwidths, &statfsbuf, &statvfsbuf);
273 prtstat(&statfsbuf, &statvfsbuf, &maxwidths);
282 struct statfs *mntbuf;
283 struct statvfs *mntvbuf;
285 mntsize = getmntvinfo(&mntbuf, &mntvbuf, MNT_NOWAIT);
286 for (i = 0; i < mntsize; i++) {
287 if (!strcmp(mntbuf[i].f_mntfromname, name))
288 return (mntbuf[i].f_mntonname);
294 * Make a pass over the filesystem info in ``mntbuf'' filtering out
295 * filesystem types not in vfslist and possibly re-stating to get
296 * current (not cached) info. Returns the new count of valid statfs bufs.
299 regetmntinfo(struct statfs **mntbufp, struct statvfs **mntvbufp, long mntsize, char **vfslist)
302 struct statfs *mntbuf;
303 struct statvfs *mntvbuf;
306 return (nflag ? mntsize : getmntvinfo(mntbufp, mntvbufp, MNT_WAIT));
310 for (j = 0, i = 0; i < mntsize; i++) {
311 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
314 statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
315 statvfs(mntbuf[i].f_mntonname,&mntvbuf[j]);
317 mntbuf[j] = mntbuf[i];
318 mntvbuf[j] = mntvbuf[i];
326 prthuman(struct statvfs *vsfsp, int64_t used)
328 prthumanval(vsfsp->f_blocks * vsfsp->f_bsize);
329 prthumanval(used * vsfsp->f_bsize);
330 prthumanval(vsfsp->f_bavail * vsfsp->f_bsize);
334 prthumanval(int64_t bytes)
339 flags = HN_B | HN_NOSPACE | HN_FRACTIONAL;
340 if (hflag == UNITS_SI)
341 flags |= HN_DIVISOR_1000;
343 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
344 bytes, "", HN_AUTOSCALE, flags);
350 * Print an inode count in "human-readable" format.
353 prthumanvalinode(int64_t bytes)
358 flags = HN_NOSPACE | HN_FRACTIONAL | HN_DIVISOR_1000;
360 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
361 bytes, "", HN_AUTOSCALE, flags);
367 * Convert statfs returned filesystem size into BLOCKSIZE units.
368 * Attempts to avoid overflow for large filesystems.
371 fsbtoblk(int64_t num, uint64_t bsize, u_long reqbsize)
373 if (bsize != 0 && bsize < reqbsize)
374 return (num / (intmax_t)(reqbsize / bsize));
376 return (num * (intmax_t)(bsize / reqbsize));
380 * Print out status about a filesystem.
383 prtstat(struct statfs *sfsp, struct statvfs *vsfsp, struct maxwidths *mwp)
385 static long blocksize;
386 static int headerlen, timesthrough;
387 static const char *header;
388 int64_t used, availblks, inodes;
390 if (++timesthrough == 1) {
391 mwp->mntfrom = imax(mwp->mntfrom, strlen("Filesystem"));
392 mwp->fstype = imax(mwp->fstype, strlen("Type"));
395 mwp->total = mwp->used = mwp->avail = strlen(header);
397 header = getbsize(&headerlen, &blocksize);
398 mwp->total = imax(mwp->total, headerlen);
400 mwp->used = imax(mwp->used, strlen("Used"));
401 mwp->avail = imax(mwp->avail, strlen("Avail"));
403 printf("%-*s", mwp->mntfrom, "Filesystem");
405 printf(" %-*s", mwp->fstype, "Type");
406 printf(" %-*s %*s %*s Capacity", mwp->total, header, mwp->used,
407 "Used", mwp->avail, "Avail");
409 mwp->iused = imax(hflag ? 0 : mwp->iused,
410 (int)strlen(" iused"));
411 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
412 (int)strlen("ifree"));
413 printf(" %*s %*s %%iused", mwp->iused - 2,
414 "iused", mwp->ifree, "ifree");
416 printf(" Mounted on\n");
418 printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
420 printf(" %-*s", mwp->fstype, sfsp->f_fstypename);
421 used = vsfsp->f_blocks - vsfsp->f_bfree;
422 availblks = vsfsp->f_bavail + used;
424 prthuman(vsfsp, used);
426 printf(" %*jd %*jd %*jd", mwp->total,
427 fsbtoblk(vsfsp->f_blocks, vsfsp->f_bsize, blocksize),
428 mwp->used, fsbtoblk(used, vsfsp->f_bsize, blocksize),
429 mwp->avail, fsbtoblk(vsfsp->f_bavail, vsfsp->f_bsize,
433 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
435 inodes = vsfsp->f_files;
436 used = inodes - vsfsp->f_ffree;
439 prthumanvalinode(used);
440 prthumanvalinode(vsfsp->f_ffree);
442 printf(" %*jd %*jd", mwp->iused, (intmax_t)used,
443 mwp->ifree, (intmax_t)vsfsp->f_ffree);
445 printf(" %4.0f%% ", inodes == 0 ? 100.0 :
446 (double)used / (double)inodes * 100.0);
449 printf(" %s\n", sfsp->f_mntonname);
453 * Update the maximum field-width information in `mwp' based on
454 * the filesystem specified by `sfsp'.
457 update_maxwidths(struct maxwidths *mwp, struct statfs *sfsp, struct statvfs *vsfsp)
459 static long blocksize;
463 getbsize(&dummy, &blocksize);
465 mwp->mntfrom = imax(mwp->mntfrom, strlen(sfsp->f_mntfromname));
466 mwp->fstype = imax(mwp->fstype, strlen(sfsp->f_fstypename));
467 mwp->total = imax(mwp->total, quadwidth(fsbtoblk(vsfsp->f_blocks,
468 vsfsp->f_bsize, blocksize)));
469 mwp->used = imax(mwp->used, quadwidth(fsbtoblk(vsfsp->f_blocks -
470 vsfsp->f_bfree, vsfsp->f_bsize, blocksize)));
471 mwp->avail = imax(mwp->avail, quadwidth(fsbtoblk(vsfsp->f_bavail,
472 vsfsp->f_bsize, blocksize)));
473 mwp->iused = imax(mwp->iused, quadwidth(vsfsp->f_files -
475 mwp->ifree = imax(mwp->ifree, quadwidth(vsfsp->f_ffree));
478 /* Return the width in characters of the specified long. */
480 quadwidth(int64_t val)
485 /* Negative or zero values require one extra digit. */
502 "usage: df [-b | -H | -h | -k | -m | -P] [-ailnT] [-t type] [file | filesystem ...]\n");
509 char *str, *strptr, **listptr;
510 int mib[3], maxvfsconf, cnt=0, i;
512 struct ovfsconf *ptr;
514 mib[0] = CTL_VFS; mib[1] = VFS_GENERIC; mib[2] = VFS_MAXTYPENUM;
515 miblen=sizeof(maxvfsconf);
516 if (sysctl(mib, (unsigned int)(NELEM(mib)),
517 &maxvfsconf, &miblen, NULL, 0)) {
518 warnx("sysctl failed");
522 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
523 warnx("malloc failed");
527 for (ptr = getvfsent(); ptr; ptr = getvfsent())
528 if (ptr->vfc_flags & VFCF_NETWORK) {
529 listptr[cnt++] = strdup(ptr->vfc_name);
530 if (listptr[cnt-1] == NULL) {
531 warnx("malloc failed");
538 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
540 warnx("malloc failed");
545 *str = 'n'; *(str + 1) = 'o';
546 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
547 strncpy(strptr, listptr[i], 32);
548 strptr += strlen(listptr[i]);