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.
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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
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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
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22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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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/fs.h>
47 #include <vfs/ufs/ufsmount.h>
63 /* Maximum widths of various fields. */
73 int bread(off_t, void *, int);
74 int checkvfsname(const char *, char **);
75 char *getmntpt(char *);
76 int quadwidth(int64_t);
77 char *makenetvfslist(void);
78 char **makevfslist(char *);
79 void prthuman(struct statvfs *, int64_t);
80 void prthumanval(int64_t);
81 void prtstat(struct statfs *, struct statvfs *, struct maxwidths *);
82 long regetmntinfo(struct statfs **, struct statvfs **, long, char **);
83 int ufs_df(char *, struct maxwidths *);
84 void update_maxwidths(struct maxwidths *, struct statfs *, struct statvfs *);
87 int aflag = 0, hflag, iflag, nflag;
93 return (a > b ? a : b);
96 static __inline int64_t
97 qmax(int64_t a, int64_t b)
99 return (a > b ? a : b);
103 main(int argc, char **argv)
106 struct statfs statfsbuf, *mntbuf;
107 struct statvfs statvfsbuf, *mntvbuf;
108 struct maxwidths maxwidths;
110 char *mntpath, *mntpt, **vfslist;
117 while ((ch = getopt(argc, argv, "abgHhiklmnPt:")) != -1)
125 if (setenv("BLOCKSIZE", "512", 1) != 0)
126 warn("setenv: cannot set BLOCKSIZE=512");
130 if (setenv("BLOCKSIZE", "1g", 1) != 0)
131 warn("setenv: cannot set BLOCKSIZE=1g");
144 if (setenv("BLOCKSIZE", "1k", 1) != 0)
145 warn("setenv: cannot set BLOCKSIZE=1k");
150 errx(1, "-l and -t are mutually exclusive.");
151 vfslist = makevfslist(makenetvfslist());
154 if (setenv("BLOCKSIZE", "1m", 1) != 0)
155 warn("setenv: cannot set BLOCKSIZE=1m");
163 errx(1, "only one -t option may be specified");
165 vfslist = makevfslist(optarg);
174 mntsize = getmntvinfo(&mntbuf, &mntvbuf, MNT_NOWAIT);
175 bzero(&maxwidths, sizeof(maxwidths));
176 for (i = 0; i < mntsize; i++)
177 update_maxwidths(&maxwidths, &mntbuf[i], &mntvbuf[i]);
181 mntsize = regetmntinfo(&mntbuf, &mntvbuf, mntsize, vfslist);
182 bzero(&maxwidths, sizeof(maxwidths));
183 for (i = 0; i < mntsize; i++)
184 update_maxwidths(&maxwidths, &mntbuf[i], &mntvbuf[i]);
185 for (i = 0; i < mntsize; i++) {
186 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
187 prtstat(&mntbuf[i], &mntvbuf[i], &maxwidths);
192 for (; *argv; argv++) {
193 if (stat(*argv, &stbuf) < 0) {
194 if ((mntpt = getmntpt(*argv)) == NULL) {
199 } else if (S_ISCHR(stbuf.st_mode)) {
200 if ((mntpt = getmntpt(*argv)) == NULL) {
202 mntpath = strdup("/tmp/df.XXXXXX");
203 if (mntpath == NULL) {
204 warn("strdup failed");
208 mntpt = mkdtemp(mntpath);
210 warn("mkdtemp(\"%s\") failed", mntpath);
215 if (mount(fstype, mntpt, MNT_RDONLY,
217 rv = ufs_df(*argv, &maxwidths) || rv;
221 } else if (statfs(mntpt, &statfsbuf) == 0 &&
222 statvfs(mntpt, &statvfsbuf) == 0) {
223 statfsbuf.f_mntonname[0] = '\0';
224 prtstat(&statfsbuf, &statvfsbuf, &maxwidths);
237 * Statfs does not take a `wait' flag, so we cannot
238 * implement nflag here.
240 if (statfs(mntpt, &statfsbuf) < 0) {
245 if (statvfs(mntpt, &statvfsbuf) < 0) {
251 * Check to make sure the arguments we've been given are
252 * satisfied. Return an error if we have been asked to
253 * list a mount point that does not match the other args
254 * we've been given (-l, -t, etc.).
256 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
262 bzero(&maxwidths, sizeof(maxwidths));
263 update_maxwidths(&maxwidths, &statfsbuf, &statvfsbuf);
265 prtstat(&statfsbuf, &statvfsbuf, &maxwidths);
274 struct statfs *mntbuf;
275 struct statvfs *mntvbuf;
277 mntsize = getmntvinfo(&mntbuf, &mntvbuf, MNT_NOWAIT);
278 for (i = 0; i < mntsize; i++) {
279 if (!strcmp(mntbuf[i].f_mntfromname, name))
280 return (mntbuf[i].f_mntonname);
286 * Make a pass over the filesystem info in ``mntbuf'' filtering out
287 * filesystem types not in vfslist and possibly re-stating to get
288 * current (not cached) info. Returns the new count of valid statfs bufs.
291 regetmntinfo(struct statfs **mntbufp, struct statvfs **mntvbufp, long mntsize, char **vfslist)
294 struct statfs *mntbuf;
295 struct statvfs *mntvbuf;
298 return (nflag ? mntsize : getmntvinfo(mntbufp, mntvbufp, MNT_WAIT));
302 for (j = 0, i = 0; i < mntsize; i++) {
303 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
306 statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
307 statvfs(mntbuf[i].f_mntonname,&mntvbuf[j]);
309 mntbuf[j] = mntbuf[i];
310 mntvbuf[j] = mntvbuf[i];
318 prthuman(struct statvfs *vsfsp, int64_t used)
320 prthumanval(vsfsp->f_blocks * vsfsp->f_bsize);
321 prthumanval(used * vsfsp->f_bsize);
322 prthumanval(vsfsp->f_bavail * vsfsp->f_bsize);
326 prthumanval(int64_t bytes)
331 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
332 if (hflag == UNITS_SI)
333 flags |= HN_DIVISOR_1000;
335 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
336 bytes, "", HN_AUTOSCALE, flags);
342 * Convert statfs returned filesystem size into BLOCKSIZE units.
343 * Attempts to avoid overflow for large filesystems.
346 fsbtoblk(int64_t num, uint64_t bsize, u_long reqbsize)
348 if (bsize != 0 && bsize < reqbsize)
349 return (num / (intmax_t)(reqbsize / bsize));
351 return (num * (intmax_t)(bsize / reqbsize));
355 * Print out status about a filesystem.
358 prtstat(struct statfs *sfsp, struct statvfs *vsfsp, struct maxwidths *mwp)
360 static long blocksize;
361 static int headerlen, timesthrough;
362 static const char *header;
363 int64_t used, availblks, inodes;
365 if (++timesthrough == 1) {
366 mwp->mntfrom = imax(mwp->mntfrom, strlen("Filesystem"));
369 mwp->total = mwp->used = mwp->avail = strlen(header);
371 header = getbsize(&headerlen, &blocksize);
372 mwp->total = imax(mwp->total, headerlen);
374 mwp->used = imax(mwp->used, strlen("Used"));
375 mwp->avail = imax(mwp->avail, strlen("Avail"));
377 printf("%-*s %-*s %*s %*s Capacity", mwp->mntfrom,
378 "Filesystem", mwp->total, header, mwp->used, "Used",
379 mwp->avail, "Avail");
381 mwp->iused = imax(mwp->iused, strlen(" iused"));
382 mwp->ifree = imax(mwp->ifree, strlen("ifree"));
383 printf(" %*s %*s %%iused", mwp->iused - 2,
384 "iused", mwp->ifree, "ifree");
386 printf(" Mounted on\n");
388 printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
389 used = vsfsp->f_blocks - vsfsp->f_bfree;
390 availblks = vsfsp->f_bavail + used;
392 prthuman(vsfsp, used);
394 printf(" %*jd %*jd %*jd", mwp->total,
395 fsbtoblk(vsfsp->f_blocks, vsfsp->f_bsize, blocksize),
396 mwp->used, fsbtoblk(used, vsfsp->f_bsize, blocksize),
397 mwp->avail, fsbtoblk(vsfsp->f_bavail, vsfsp->f_bsize,
401 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
403 inodes = vsfsp->f_files;
404 used = inodes - vsfsp->f_ffree;
405 printf(" %*jd %*jd %4.0f%% ", mwp->iused, (intmax_t)used,
406 mwp->ifree, (intmax_t)vsfsp->f_ffree, inodes == 0 ? 100.0 :
407 (double)used / (double)inodes * 100.0);
410 printf(" %s\n", sfsp->f_mntonname);
414 * Update the maximum field-width information in `mwp' based on
415 * the filesystem specified by `sfsp'.
418 update_maxwidths(struct maxwidths *mwp, struct statfs *sfsp, struct statvfs *vsfsp)
420 static long blocksize;
424 getbsize(&dummy, &blocksize);
426 mwp->mntfrom = imax(mwp->mntfrom, strlen(sfsp->f_mntfromname));
427 mwp->total = imax(mwp->total, quadwidth(fsbtoblk(vsfsp->f_blocks,
428 vsfsp->f_bsize, blocksize)));
429 mwp->used = imax(mwp->used, quadwidth(fsbtoblk(vsfsp->f_blocks -
430 vsfsp->f_bfree, vsfsp->f_bsize, blocksize)));
431 mwp->avail = imax(mwp->avail, quadwidth(fsbtoblk(vsfsp->f_bavail,
432 vsfsp->f_bsize, blocksize)));
433 mwp->iused = imax(mwp->iused, quadwidth(vsfsp->f_files -
435 mwp->ifree = imax(mwp->ifree, quadwidth(vsfsp->f_ffree));
438 /* Return the width in characters of the specified long. */
440 quadwidth(int64_t val)
445 /* Negative or zero values require one extra digit. */
458 * This code constitutes the pre-system call Berkeley df code for extracting
459 * information from filesystem superblocks.
466 #define sblock sb.iu_fs
471 ufs_df(char *file, struct maxwidths *mwp)
473 struct statfs statfsbuf;
474 struct statvfs statvfsbuf;
476 struct statvfs *vsfsp;
483 if ((rfd = open(file, O_RDONLY)) < 0) {
487 if (bread((off_t)SBOFF, &sblock, SBSIZE) == 0) {
494 strcpy(sfsp->f_fstypename, "ufs");
496 sfsp->f_bsize = vsfsp->f_bsize = sblock.fs_fsize;
497 sfsp->f_iosize = vsfsp->f_frsize = sblock.fs_bsize;
498 sfsp->f_blocks = vsfsp->f_blocks = sblock.fs_dsize;
499 sfsp->f_bfree = vsfsp->f_bfree =
500 sblock.fs_cstotal.cs_nbfree * sblock.fs_frag +
501 sblock.fs_cstotal.cs_nffree;
502 sfsp->f_bavail = vsfsp->f_bavail = freespace(&sblock, sblock.fs_minfree);
503 sfsp->f_files = vsfsp->f_files = sblock.fs_ncg * sblock.fs_ipg;
504 sfsp->f_ffree = vsfsp->f_ffree = sblock.fs_cstotal.cs_nifree;
505 sfsp->f_fsid.val[0] = 0;
506 sfsp->f_fsid.val[1] = 0;
507 if ((mntpt = getmntpt(file)) == NULL)
509 memmove(&sfsp->f_mntonname[0], mntpt, (size_t)MNAMELEN);
510 memmove(&sfsp->f_mntfromname[0], file, (size_t)MNAMELEN);
511 prtstat(sfsp, vsfsp, mwp);
517 bread(off_t off, void *buf, int cnt)
521 lseek(rfd, off, SEEK_SET);
522 if ((nr = read(rfd, buf, (size_t)cnt)) != (ssize_t)cnt) {
523 /* Probably a dismounted disk if errno == EIO. */
525 fprintf(stderr, "\ndf: %lld: %s\n",
526 (long long)off, strerror(nr > 0 ? EIO : errno));
537 "usage: df [-b | -H | -h | -k | -m | -P] [-ailn] [-t type] [file | filesystem ...]\n");
544 char *str, *strptr, **listptr;
545 int mib[3], maxvfsconf, cnt=0, i;
547 struct ovfsconf *ptr;
549 mib[0] = CTL_VFS; mib[1] = VFS_GENERIC; mib[2] = VFS_MAXTYPENUM;
550 miblen=sizeof(maxvfsconf);
551 if (sysctl(mib, (unsigned int)(sizeof(mib) / sizeof(mib[0])),
552 &maxvfsconf, &miblen, NULL, 0)) {
553 warnx("sysctl failed");
557 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
558 warnx("malloc failed");
562 for (ptr = getvfsent(); ptr; ptr = getvfsent())
563 if (ptr->vfc_flags & VFCF_NETWORK) {
564 listptr[cnt++] = strdup(ptr->vfc_name);
565 if (listptr[cnt-1] == NULL) {
566 warnx("malloc failed");
572 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
574 warnx("malloc failed");
579 *str = 'n'; *(str + 1) = 'o';
580 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
581 strncpy(strptr, listptr[i], 32);
582 strptr += strlen(listptr[i]);