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
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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>
62 /* Maximum widths of various fields. */
74 char **makevfslist(char *);
75 int checkvfsname(const char *, char **);
77 static char *getmntpt(char *);
78 static int quadwidth(int64_t);
79 static char *makenetvfslist(void);
80 static void prthuman(struct statvfs *, int64_t);
81 static void prthumanval(int64_t);
82 static void prtstat(struct statfs *, struct statvfs *, struct maxwidths *);
83 static long regetmntinfo(struct statfs **, struct statvfs **, long, char **);
84 static void update_maxwidths(struct maxwidths *, struct statfs *, struct statvfs *);
85 static void usage(void);
87 int aflag = 0, hflag, iflag, nflag, Tflag;
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:T")) != -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);
177 mntsize = getmntvinfo(&mntbuf, &mntvbuf, MNT_NOWAIT);
178 bzero(&maxwidths, sizeof(maxwidths));
179 for (i = 0; i < mntsize; i++)
180 update_maxwidths(&maxwidths, &mntbuf[i], &mntvbuf[i]);
184 mntsize = regetmntinfo(&mntbuf, &mntvbuf, mntsize, vfslist);
185 bzero(&maxwidths, sizeof(maxwidths));
186 for (i = 0; i < mntsize; i++)
187 update_maxwidths(&maxwidths, &mntbuf[i], &mntvbuf[i]);
188 for (i = 0; i < mntsize; i++) {
189 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
190 prtstat(&mntbuf[i], &mntvbuf[i], &maxwidths);
195 for (; *argv; argv++) {
196 if (stat(*argv, &stbuf) < 0) {
197 if ((mntpt = getmntpt(*argv)) == NULL) {
202 } else if (S_ISCHR(stbuf.st_mode)) {
203 if ((mntpt = getmntpt(*argv)) == NULL) {
205 mntpath = strdup("/tmp/df.XXXXXX");
206 if (mntpath == NULL) {
207 warn("strdup failed");
211 mntpt = mkdtemp(mntpath);
213 warn("mkdtemp(\"%s\") failed", mntpath);
218 if (mount(fstype, mntpt, MNT_RDONLY,
225 } else if (statfs(mntpt, &statfsbuf) == 0 &&
226 statvfs(mntpt, &statvfsbuf) == 0) {
227 statfsbuf.f_mntonname[0] = '\0';
228 prtstat(&statfsbuf, &statvfsbuf, &maxwidths);
241 * Statfs does not take a `wait' flag, so we cannot
242 * implement nflag here.
244 if (statfs(mntpt, &statfsbuf) < 0) {
249 if (statvfs(mntpt, &statvfsbuf) < 0) {
255 * Check to make sure the arguments we've been given are
256 * satisfied. Return an error if we have been asked to
257 * list a mount point that does not match the other args
258 * we've been given (-l, -t, etc.).
260 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
266 bzero(&maxwidths, sizeof(maxwidths));
267 update_maxwidths(&maxwidths, &statfsbuf, &statvfsbuf);
269 prtstat(&statfsbuf, &statvfsbuf, &maxwidths);
278 struct statfs *mntbuf;
279 struct statvfs *mntvbuf;
281 mntsize = getmntvinfo(&mntbuf, &mntvbuf, MNT_NOWAIT);
282 for (i = 0; i < mntsize; i++) {
283 if (!strcmp(mntbuf[i].f_mntfromname, name))
284 return (mntbuf[i].f_mntonname);
290 * Make a pass over the filesystem info in ``mntbuf'' filtering out
291 * filesystem types not in vfslist and possibly re-stating to get
292 * current (not cached) info. Returns the new count of valid statfs bufs.
295 regetmntinfo(struct statfs **mntbufp, struct statvfs **mntvbufp, long mntsize, char **vfslist)
298 struct statfs *mntbuf;
299 struct statvfs *mntvbuf;
302 return (nflag ? mntsize : getmntvinfo(mntbufp, mntvbufp, MNT_WAIT));
306 for (j = 0, i = 0; i < mntsize; i++) {
307 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
310 statfs(mntbuf[i].f_mntonname,&mntbuf[j]);
311 statvfs(mntbuf[i].f_mntonname,&mntvbuf[j]);
313 mntbuf[j] = mntbuf[i];
314 mntvbuf[j] = mntvbuf[i];
322 prthuman(struct statvfs *vsfsp, int64_t used)
324 prthumanval(vsfsp->f_blocks * vsfsp->f_bsize);
325 prthumanval(used * vsfsp->f_bsize);
326 prthumanval(vsfsp->f_bavail * vsfsp->f_bsize);
330 prthumanval(int64_t bytes)
335 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
336 if (hflag == UNITS_SI)
337 flags |= HN_DIVISOR_1000;
339 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
340 bytes, "", HN_AUTOSCALE, flags);
346 * Print an inode count in "human-readable" format.
349 prthumanvalinode(int64_t bytes)
354 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
356 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
357 bytes, "", HN_AUTOSCALE, flags);
363 * Convert statfs returned filesystem size into BLOCKSIZE units.
364 * Attempts to avoid overflow for large filesystems.
367 fsbtoblk(int64_t num, uint64_t bsize, u_long reqbsize)
369 if (bsize != 0 && bsize < reqbsize)
370 return (num / (intmax_t)(reqbsize / bsize));
372 return (num * (intmax_t)(bsize / reqbsize));
376 * Print out status about a filesystem.
379 prtstat(struct statfs *sfsp, struct statvfs *vsfsp, struct maxwidths *mwp)
381 static long blocksize;
382 static int headerlen, timesthrough;
383 static const char *header;
384 int64_t used, availblks, inodes;
386 if (++timesthrough == 1) {
387 mwp->mntfrom = imax(mwp->mntfrom, strlen("Filesystem"));
388 mwp->fstype = imax(mwp->fstype, strlen("Type"));
391 mwp->total = mwp->used = mwp->avail = strlen(header);
393 header = getbsize(&headerlen, &blocksize);
394 mwp->total = imax(mwp->total, headerlen);
396 mwp->used = imax(mwp->used, strlen("Used"));
397 mwp->avail = imax(mwp->avail, strlen("Avail"));
399 printf("%-*s", mwp->mntfrom, "Filesystem");
401 printf(" %-*s", mwp->fstype, "Type");
402 printf(" %-*s %*s %*s Capacity", mwp->total, header, mwp->used,
403 "Used", mwp->avail, "Avail");
405 mwp->iused = imax(hflag ? 0 : mwp->iused,
406 (int)strlen(" iused"));
407 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
408 (int)strlen("ifree"));
409 printf(" %*s %*s %%iused", mwp->iused - 2,
410 "iused", mwp->ifree, "ifree");
412 printf(" Mounted on\n");
414 printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
416 printf(" %-*s", mwp->fstype, sfsp->f_fstypename);
417 used = vsfsp->f_blocks - vsfsp->f_bfree;
418 availblks = vsfsp->f_bavail + used;
420 prthuman(vsfsp, used);
422 printf(" %*jd %*jd %*jd", mwp->total,
423 fsbtoblk(vsfsp->f_blocks, vsfsp->f_bsize, blocksize),
424 mwp->used, fsbtoblk(used, vsfsp->f_bsize, blocksize),
425 mwp->avail, fsbtoblk(vsfsp->f_bavail, vsfsp->f_bsize,
429 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
431 inodes = vsfsp->f_files;
432 used = inodes - vsfsp->f_ffree;
435 prthumanvalinode(used);
436 prthumanvalinode(vsfsp->f_ffree);
438 printf(" %*jd %*jd", mwp->iused, (intmax_t)used,
439 mwp->ifree, (intmax_t)vsfsp->f_ffree);
441 printf(" %4.0f%% ", inodes == 0 ? 100.0 :
442 (double)used / (double)inodes * 100.0);
445 printf(" %s\n", sfsp->f_mntonname);
449 * Update the maximum field-width information in `mwp' based on
450 * the filesystem specified by `sfsp'.
453 update_maxwidths(struct maxwidths *mwp, struct statfs *sfsp, struct statvfs *vsfsp)
455 static long blocksize;
459 getbsize(&dummy, &blocksize);
461 mwp->mntfrom = imax(mwp->mntfrom, strlen(sfsp->f_mntfromname));
462 mwp->fstype = imax(mwp->fstype, strlen(sfsp->f_fstypename));
463 mwp->total = imax(mwp->total, quadwidth(fsbtoblk(vsfsp->f_blocks,
464 vsfsp->f_bsize, blocksize)));
465 mwp->used = imax(mwp->used, quadwidth(fsbtoblk(vsfsp->f_blocks -
466 vsfsp->f_bfree, vsfsp->f_bsize, blocksize)));
467 mwp->avail = imax(mwp->avail, quadwidth(fsbtoblk(vsfsp->f_bavail,
468 vsfsp->f_bsize, blocksize)));
469 mwp->iused = imax(mwp->iused, quadwidth(vsfsp->f_files -
471 mwp->ifree = imax(mwp->ifree, quadwidth(vsfsp->f_ffree));
474 /* Return the width in characters of the specified long. */
476 quadwidth(int64_t val)
481 /* Negative or zero values require one extra digit. */
498 "usage: df [-b | -H | -h | -k | -m | -P] [-ailnT] [-t type] [file | filesystem ...]\n");
505 char *str, *strptr, **listptr;
506 int mib[3], maxvfsconf, cnt=0, i;
508 struct ovfsconf *ptr;
510 mib[0] = CTL_VFS; mib[1] = VFS_GENERIC; mib[2] = VFS_MAXTYPENUM;
511 miblen=sizeof(maxvfsconf);
512 if (sysctl(mib, (unsigned int)(sizeof(mib) / sizeof(mib[0])),
513 &maxvfsconf, &miblen, NULL, 0)) {
514 warnx("sysctl failed");
518 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
519 warnx("malloc failed");
523 for (ptr = getvfsent(); ptr; ptr = getvfsent())
524 if (ptr->vfc_flags & VFCF_NETWORK) {
525 listptr[cnt++] = strdup(ptr->vfc_name);
526 if (listptr[cnt-1] == NULL) {
527 warnx("malloc failed");
534 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
536 warnx("malloc failed");
541 *str = 'n'; *(str + 1) = 'o';
542 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
543 strncpy(strptr, listptr[i], 32);
544 strptr += strlen(listptr[i]);