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. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 static const char copyright[] =
41 "@(#) Copyright (c) 1980, 1990, 1993, 1994\n\
42 The Regents of the University of California. All rights reserved.\n";
47 static char sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
49 static const char rcsid[] =
50 "$FreeBSD: src/bin/df/df.c,v 1.23.2.9 2002/07/01 00:14:24 iedowse Exp $";
54 #include <sys/cdefs.h>
55 #include <sys/param.h>
57 #include <sys/mount.h>
58 #include <sys/sysctl.h>
59 #include <ufs/ufs/ufsmount.h>
60 #include <ufs/ffs/fs.h>
76 #define KILO_SZ(n) (n)
77 #define MEGA_SZ(n) ((n) * (n))
78 #define GIGA_SZ(n) ((n) * (n) * (n))
79 #define TERA_SZ(n) ((n) * (n) * (n) * (n))
80 #define PETA_SZ(n) ((n) * (n) * (n) * (n) * (n))
82 #define KILO_2_SZ (KILO_SZ(1024ULL))
83 #define MEGA_2_SZ (MEGA_SZ(1024ULL))
84 #define GIGA_2_SZ (GIGA_SZ(1024ULL))
85 #define TERA_2_SZ (TERA_SZ(1024ULL))
86 #define PETA_2_SZ (PETA_SZ(1024ULL))
88 #define KILO_SI_SZ (KILO_SZ(1000ULL))
89 #define MEGA_SI_SZ (MEGA_SZ(1000ULL))
90 #define GIGA_SI_SZ (GIGA_SZ(1000ULL))
91 #define TERA_SI_SZ (TERA_SZ(1000ULL))
92 #define PETA_SI_SZ (PETA_SZ(1000ULL))
94 /* Maximum widths of various fields. */
104 unsigned long long vals_si [] = {1, KILO_SI_SZ, MEGA_SI_SZ, GIGA_SI_SZ, TERA_SI_SZ, PETA_SI_SZ};
105 unsigned long long vals_base2[] = {1, KILO_2_SZ, MEGA_2_SZ, GIGA_2_SZ, TERA_2_SZ, PETA_2_SZ};
106 unsigned long long *valp;
108 typedef enum { NONE, KILO, MEGA, GIGA, TERA, PETA, UNIT_MAX } unit_t;
110 unit_t unitp [] = { NONE, KILO, MEGA, GIGA, TERA, PETA };
112 int bread(off_t, void *, int);
113 int checkvfsname(const char *, char **);
114 char *getmntpt(char *);
116 char *makenetvfslist(void);
117 char **makevfslist(char *);
118 void prthuman(struct statfs *, long);
119 void prthumanval(double);
120 void prtstat(struct statfs *, struct maxwidths *);
121 long regetmntinfo(struct statfs **, long, char **);
122 int ufs_df(char *, struct maxwidths *);
123 unit_t unit_adjust(double *);
124 void update_maxwidths(struct maxwidths *, struct statfs *);
127 int aflag = 0, hflag, iflag, nflag;
128 struct ufs_args mdev;
130 static __inline int imax(int a, int b)
132 return (a > b ? a : b);
136 main(int argc, char *argv[])
139 struct statfs statfsbuf, *mntbuf;
140 struct maxwidths maxwidths;
142 char *mntpath, *mntpt, **vfslist;
149 while ((ch = getopt(argc, argv, "abgHhiklmnPt:")) != -1)
157 putenv("BLOCKSIZE=512");
161 putenv("BLOCKSIZE=1g");
176 putenv("BLOCKSIZE=1k");
181 errx(1, "-l and -t are mutually exclusive.");
182 vfslist = makevfslist(makenetvfslist());
185 putenv("BLOCKSIZE=1m");
193 errx(1, "only one -t option may be specified");
195 vfslist = makevfslist(optarg);
204 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
205 bzero(&maxwidths, sizeof(maxwidths));
206 for (i = 0; i < mntsize; i++)
207 update_maxwidths(&maxwidths, &mntbuf[i]);
211 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
212 bzero(&maxwidths, sizeof(maxwidths));
213 for (i = 0; i < mntsize; i++)
214 update_maxwidths(&maxwidths, &mntbuf[i]);
215 for (i = 0; i < mntsize; i++) {
216 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
217 prtstat(&mntbuf[i], &maxwidths);
222 for (; *argv; argv++) {
223 if (stat(*argv, &stbuf) < 0) {
224 if ((mntpt = getmntpt(*argv)) == 0) {
229 } else if (S_ISCHR(stbuf.st_mode)) {
230 if ((mntpt = getmntpt(*argv)) == 0) {
232 mntpath = strdup("/tmp/df.XXXXXX");
233 if (mntpath == NULL) {
234 warn("strdup failed");
238 mntpt = mkdtemp(mntpath);
240 warn("mkdtemp(\"%s\") failed", mntpath);
245 if (mount(fstype, mntpt, MNT_RDONLY,
247 rv = ufs_df(*argv, &maxwidths) || rv;
251 } else if (statfs(mntpt, &statfsbuf) == 0) {
252 statfsbuf.f_mntonname[0] = '\0';
253 prtstat(&statfsbuf, &maxwidths);
258 (void)unmount(mntpt, 0);
266 * Statfs does not take a `wait' flag, so we cannot
267 * implement nflag here.
269 if (statfs(mntpt, &statfsbuf) < 0) {
275 bzero(&maxwidths, sizeof(maxwidths));
276 update_maxwidths(&maxwidths, &statfsbuf);
278 prtstat(&statfsbuf, &maxwidths);
287 struct statfs *mntbuf;
289 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
290 for (i = 0; i < mntsize; i++) {
291 if (!strcmp(mntbuf[i].f_mntfromname, name))
292 return (mntbuf[i].f_mntonname);
298 * Make a pass over the filesystem info in ``mntbuf'' filtering out
299 * filesystem types not in vfslist and possibly re-stating to get
300 * current (not cached) info. Returns the new count of valid statfs bufs.
303 regetmntinfo(struct statfs **mntbufp, long mntsize, char **vfslist)
306 struct statfs *mntbuf;
309 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
312 for (j = 0, i = 0; i < mntsize; i++) {
313 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
316 (void)statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
318 mntbuf[j] = mntbuf[i];
325 * Output in "human-readable" format. Uses 3 digits max and puts
326 * unit suffixes at the end. Makes output compact and easy to read,
327 * especially on huge disks.
331 unit_adjust(double *val)
335 unsigned int unit_sz;
339 unit_sz = abval ? ilogb(abval) / 10 : 0;
341 if (unit_sz >= UNIT_MAX) {
344 unit = unitp[unit_sz];
345 *val /= (double)valp[unit_sz];
352 prthuman(struct statfs *sfsp, long used)
355 prthumanval((double)sfsp->f_blocks * (double)sfsp->f_bsize);
356 prthumanval((double)used * (double)sfsp->f_bsize);
357 prthumanval((double)sfsp->f_bavail * (double)sfsp->f_bsize);
361 prthumanval(double bytes)
365 unit = unit_adjust(&bytes);
370 (void)printf(" %5.0f%c", bytes, "BKMGTPE"[unit]);
372 (void)printf(" %5.1f%c", bytes, "BKMGTPE"[unit]);
376 * Convert statfs returned filesystem size into BLOCKSIZE units.
377 * Attempts to avoid overflow for large filesystems.
379 #define fsbtoblk(num, fsbs, bs) \
380 (((fsbs) != 0 && (fsbs) < (bs)) ? \
381 (num) / ((bs) / (fsbs)) : (num) * ((fsbs) / (bs)))
384 * Print out status about a filesystem.
387 prtstat(struct statfs *sfsp, struct maxwidths *mwp)
389 static long blocksize;
390 static int headerlen, timesthrough;
391 static const char *header;
392 long used, availblks, inodes;
394 if (++timesthrough == 1) {
395 mwp->mntfrom = imax(mwp->mntfrom, strlen("Filesystem"));
398 mwp->total = mwp->used = mwp->avail = strlen(header);
400 header = getbsize(&headerlen, &blocksize);
401 mwp->total = imax(mwp->total, headerlen);
403 mwp->used = imax(mwp->used, strlen("Used"));
404 mwp->avail = imax(mwp->avail, strlen("Avail"));
406 (void)printf("%-*s %-*s %*s %*s Capacity", mwp->mntfrom,
407 "Filesystem", mwp->total, header, mwp->used, "Used",
408 mwp->avail, "Avail");
410 mwp->iused = imax(mwp->iused, strlen(" iused"));
411 mwp->ifree = imax(mwp->ifree, strlen("ifree"));
412 (void)printf(" %*s %*s %%iused", mwp->iused - 2,
413 "iused", mwp->ifree, "ifree");
415 (void)printf(" Mounted on\n");
417 (void)printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
418 used = sfsp->f_blocks - sfsp->f_bfree;
419 availblks = sfsp->f_bavail + used;
421 prthuman(sfsp, used);
423 (void)printf(" %*ld %*ld %*ld", mwp->total,
424 fsbtoblk(sfsp->f_blocks, sfsp->f_bsize, blocksize),
425 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
426 mwp->avail, fsbtoblk(sfsp->f_bavail, sfsp->f_bsize,
429 (void)printf(" %5.0f%%",
430 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
432 inodes = sfsp->f_files;
433 used = inodes - sfsp->f_ffree;
434 (void)printf(" %*ld %*ld %4.0f%% ", mwp->iused, used,
435 mwp->ifree, sfsp->f_ffree, inodes == 0 ? 100.0 :
436 (double)used / (double)inodes * 100.0);
439 (void)printf(" %s\n", sfsp->f_mntonname);
443 * Update the maximum field-width information in `mwp' based on
444 * the filesystem specified by `sfsp'.
447 update_maxwidths(struct maxwidths *mwp, struct statfs *sfsp)
449 static long blocksize;
453 getbsize(&dummy, &blocksize);
455 mwp->mntfrom = imax(mwp->mntfrom, strlen(sfsp->f_mntfromname));
456 mwp->total = imax(mwp->total, longwidth(fsbtoblk(sfsp->f_blocks,
457 sfsp->f_bsize, blocksize)));
458 mwp->used = imax(mwp->used, longwidth(fsbtoblk(sfsp->f_blocks -
459 sfsp->f_bfree, sfsp->f_bsize, blocksize)));
460 mwp->avail = imax(mwp->avail, longwidth(fsbtoblk(sfsp->f_bavail,
461 sfsp->f_bsize, blocksize)));
462 mwp->iused = imax(mwp->iused, longwidth(sfsp->f_files -
464 mwp->ifree = imax(mwp->ifree, longwidth(sfsp->f_ffree));
467 /* Return the width in characters of the specified long. */
474 /* Negative or zero values require one extra digit. */
488 * This code constitutes the pre-system call Berkeley df code for extracting
489 * information from filesystem superblocks.
496 #define sblock sb.iu_fs
501 ufs_df(char *file, struct maxwidths *mwp)
503 struct statfs statfsbuf;
511 if ((rfd = open(file, O_RDONLY)) < 0) {
515 if (bread((off_t)SBOFF, &sblock, SBSIZE) == 0) {
521 strcpy(sfsp->f_fstypename, "ufs");
523 sfsp->f_bsize = sblock.fs_fsize;
524 sfsp->f_iosize = sblock.fs_bsize;
525 sfsp->f_blocks = sblock.fs_dsize;
526 sfsp->f_bfree = sblock.fs_cstotal.cs_nbfree * sblock.fs_frag +
527 sblock.fs_cstotal.cs_nffree;
528 sfsp->f_bavail = freespace(&sblock, sblock.fs_minfree);
529 sfsp->f_files = sblock.fs_ncg * sblock.fs_ipg;
530 sfsp->f_ffree = sblock.fs_cstotal.cs_nifree;
531 sfsp->f_fsid.val[0] = 0;
532 sfsp->f_fsid.val[1] = 0;
533 if ((mntpt = getmntpt(file)) == 0)
535 memmove(&sfsp->f_mntonname[0], mntpt, (size_t)MNAMELEN);
536 memmove(&sfsp->f_mntfromname[0], file, (size_t)MNAMELEN);
543 bread(off_t off, void *buf, int cnt)
547 (void)lseek(rfd, off, SEEK_SET);
548 if ((nr = read(rfd, buf, (size_t)cnt)) != (ssize_t)cnt) {
549 /* Probably a dismounted disk if errno == EIO. */
551 (void)fprintf(stderr, "\ndf: %lld: %s\n",
552 (long long)off, strerror(nr > 0 ? EIO : errno));
562 (void)fprintf(stderr,
563 "usage: df [-b | -H | -h | -k | -m | -P] [-ailn] [-t type] [file | filesystem ...]\n");
570 char *str, *strptr, **listptr;
571 int mib[3], maxvfsconf, cnt=0, i;
573 struct ovfsconf *ptr;
575 mib[0] = CTL_VFS; mib[1] = VFS_GENERIC; mib[2] = VFS_MAXTYPENUM;
576 miblen=sizeof(maxvfsconf);
577 if (sysctl(mib, (unsigned int)(sizeof(mib) / sizeof(mib[0])),
578 &maxvfsconf, &miblen, NULL, 0)) {
579 warnx("sysctl failed");
583 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
584 warnx("malloc failed");
588 for (ptr = getvfsent(); ptr; ptr = getvfsent())
589 if (ptr->vfc_flags & VFCF_NETWORK) {
590 listptr[cnt++] = strdup(ptr->vfc_name);
591 if (listptr[cnt-1] == NULL) {
592 warnx("malloc failed");
598 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
600 warnx("malloc failed");
605 *str = 'n'; *(str + 1) = 'o';
606 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
607 strncpy(strptr, listptr[i], 32);
608 strptr += strlen(listptr[i]);