1/*-
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.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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.
21 *
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
32 * SUCH DAMAGE.
33 */
34
35#if 0
36#ifndef lint
37static const char copyright[] =
38"@(#) Copyright (c) 1980, 1990, 1993, 1994\n\
39 The Regents of the University of California. All rights reserved.\n";
40#endif /* not lint */
41
42#ifndef lint
43static char sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
44#endif /* not lint */
45#endif
46#include <sys/cdefs.h>
| 1/*-
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.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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.
21 *
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
32 * SUCH DAMAGE.
33 */
34
35#if 0
36#ifndef lint
37static const char copyright[] =
38"@(#) Copyright (c) 1980, 1990, 1993, 1994\n\
39 The Regents of the University of California. All rights reserved.\n";
40#endif /* not lint */
41
42#ifndef lint
43static char sccsid[] = "@(#)df.c 8.9 (Berkeley) 5/8/95";
44#endif /* not lint */
45#endif
46#include <sys/cdefs.h>
|
48
49#include <sys/param.h>
50#include <sys/stat.h>
51#include <sys/mount.h>
52#include <sys/sysctl.h>
53#include <ufs/ufs/ufsmount.h>
54#include <err.h>
55#include <libutil.h>
56#include <stdint.h>
57#include <stdio.h>
58#include <stdlib.h>
59#include <string.h>
60#include <sysexits.h>
61#include <unistd.h>
62
63#include "extern.h"
64
65#define UNITS_SI 1
66#define UNITS_2 2
67
68/* Maximum widths of various fields. */
69struct maxwidths {
70 int mntfrom;
71 int fstype;
72 int total;
73 int used;
74 int avail;
75 int iused;
76 int ifree;
77};
78
79static void addstat(struct statfs *, struct statfs *);
80static char *getmntpt(const char *);
81static int int64width(int64_t);
82static char *makenetvfslist(void);
83static void prthuman(const struct statfs *, int64_t);
84static void prthumanval(int64_t);
85static intmax_t fsbtoblk(int64_t, uint64_t, u_long);
86static void prtstat(struct statfs *, struct maxwidths *);
87static size_t regetmntinfo(struct statfs **, long, const char **);
88static void update_maxwidths(struct maxwidths *, const struct statfs *);
89static void usage(void);
90
91static __inline int
92imax(int a, int b)
93{
94 return (a > b ? a : b);
95}
96
97static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag;
98static struct ufs_args mdev;
99
100int
101main(int argc, char *argv[])
102{
103 struct stat stbuf;
104 struct statfs statfsbuf, totalbuf;
105 struct maxwidths maxwidths;
106 struct statfs *mntbuf;
107 const char *fstype;
108 char *mntpath, *mntpt;
109 const char **vfslist;
110 size_t i, mntsize;
111 int ch, rv;
112
113 fstype = "ufs";
114
115 memset(&totalbuf, 0, sizeof(totalbuf));
116 totalbuf.f_bsize = DEV_BSIZE;
117 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN);
118 vfslist = NULL;
119 while ((ch = getopt(argc, argv, "abcgHhiklmnPt:T")) != -1)
120 switch (ch) {
121 case 'a':
122 aflag = 1;
123 break;
124 case 'b':
125 /* FALLTHROUGH */
126 case 'P':
127 /*
128 * POSIX specifically discusses the the behavior of
129 * both -k and -P. It states that the blocksize should
130 * be set to 1024. Thus, if this occurs, simply break
131 * rather than clobbering the old blocksize.
132 */
133 if (kflag)
134 break;
135 setenv("BLOCKSIZE", "512", 1);
136 hflag = 0;
137 break;
138 case 'c':
139 cflag = 1;
140 break;
141 case 'g':
142 setenv("BLOCKSIZE", "1g", 1);
143 hflag = 0;
144 break;
145 case 'H':
146 hflag = UNITS_SI;
147 break;
148 case 'h':
149 hflag = UNITS_2;
150 break;
151 case 'i':
152 iflag = 1;
153 break;
154 case 'k':
155 kflag++;
156 setenv("BLOCKSIZE", "1024", 1);
157 hflag = 0;
158 break;
159 case 'l':
160 if (vfslist != NULL)
161 errx(1, "-l and -t are mutually exclusive.");
162 vfslist = makevfslist(makenetvfslist());
163 lflag = 1;
164 break;
165 case 'm':
166 setenv("BLOCKSIZE", "1m", 1);
167 hflag = 0;
168 break;
169 case 'n':
170 nflag = 1;
171 break;
172 case 't':
173 if (lflag)
174 errx(1, "-l and -t are mutually exclusive.");
175 if (vfslist != NULL)
176 errx(1, "only one -t option may be specified");
177 fstype = optarg;
178 vfslist = makevfslist(optarg);
179 break;
180 case 'T':
181 Tflag = 1;
182 break;
183 case '?':
184 default:
185 usage();
186 }
187 argc -= optind;
188 argv += optind;
189
190 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
191 bzero(&maxwidths, sizeof(maxwidths));
192 for (i = 0; i < mntsize; i++)
193 update_maxwidths(&maxwidths, &mntbuf[i]);
194
195 rv = 0;
196 if (!*argv) {
197 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
198 bzero(&maxwidths, sizeof(maxwidths));
199 for (i = 0; i < mntsize; i++) {
200 if (cflag)
201 addstat(&totalbuf, &mntbuf[i]);
202 update_maxwidths(&maxwidths, &mntbuf[i]);
203 }
204 if (cflag)
205 update_maxwidths(&maxwidths, &totalbuf);
206 for (i = 0; i < mntsize; i++)
207 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
208 prtstat(&mntbuf[i], &maxwidths);
209 if (cflag)
210 prtstat(&totalbuf, &maxwidths);
211 exit(rv);
212 }
213
214 for (; *argv; argv++) {
215 if (stat(*argv, &stbuf) < 0) {
216 if ((mntpt = getmntpt(*argv)) == 0) {
217 warn("%s", *argv);
218 rv = 1;
219 continue;
220 }
221 } else if (S_ISCHR(stbuf.st_mode)) {
222 if ((mntpt = getmntpt(*argv)) == 0) {
223 mdev.fspec = *argv;
224 mntpath = strdup("/tmp/df.XXXXXX");
225 if (mntpath == NULL) {
226 warn("strdup failed");
227 rv = 1;
228 continue;
229 }
230 mntpt = mkdtemp(mntpath);
231 if (mntpt == NULL) {
232 warn("mkdtemp(\"%s\") failed", mntpath);
233 rv = 1;
234 free(mntpath);
235 continue;
236 }
237 if (mount(fstype, mntpt, MNT_RDONLY,
238 &mdev) != 0) {
239 warn("%s", *argv);
240 rv = 1;
241 (void)rmdir(mntpt);
242 free(mntpath);
243 continue;
244 } else if (statfs(mntpt, &statfsbuf) == 0) {
245 statfsbuf.f_mntonname[0] = '\0';
246 prtstat(&statfsbuf, &maxwidths);
247 if (cflag)
248 addstat(&totalbuf, &statfsbuf);
249 } else {
250 warn("%s", *argv);
251 rv = 1;
252 }
253 (void)unmount(mntpt, 0);
254 (void)rmdir(mntpt);
255 free(mntpath);
256 continue;
257 }
258 } else
259 mntpt = *argv;
260
261 /*
262 * Statfs does not take a `wait' flag, so we cannot
263 * implement nflag here.
264 */
265 if (statfs(mntpt, &statfsbuf) < 0) {
266 warn("%s", mntpt);
267 rv = 1;
268 continue;
269 }
270
271 /*
272 * Check to make sure the arguments we've been given are
273 * satisfied. Return an error if we have been asked to
274 * list a mount point that does not match the other args
275 * we've been given (-l, -t, etc.).
276 */
277 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
278 rv = 1;
279 continue;
280 }
281
282 if (argc == 1) {
283 bzero(&maxwidths, sizeof(maxwidths));
284 update_maxwidths(&maxwidths, &statfsbuf);
285 }
286 prtstat(&statfsbuf, &maxwidths);
287 if (cflag)
288 addstat(&totalbuf, &statfsbuf);
289 }
290 if (cflag)
291 prtstat(&totalbuf, &maxwidths);
292 return (rv);
293}
294
295static char *
296getmntpt(const char *name)
297{
298 size_t mntsize, i;
299 struct statfs *mntbuf;
300
301 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
302 for (i = 0; i < mntsize; i++) {
303 if (!strcmp(mntbuf[i].f_mntfromname, name))
304 return (mntbuf[i].f_mntonname);
305 }
306 return (0);
307}
308
309/*
310 * Make a pass over the file system info in ``mntbuf'' filtering out
311 * file system types not in vfslist and possibly re-stating to get
312 * current (not cached) info. Returns the new count of valid statfs bufs.
313 */
314static size_t
315regetmntinfo(struct statfs **mntbufp, long mntsize, const char **vfslist)
316{
317 int error, i, j;
318 struct statfs *mntbuf;
319
320 if (vfslist == NULL)
321 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
322
323 mntbuf = *mntbufp;
324 for (j = 0, i = 0; i < mntsize; i++) {
325 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
326 continue;
327 /*
328 * XXX statfs(2) can fail for various reasons. It may be
329 * possible that the user does not have access to the
330 * pathname, if this happens, we will fall back on
331 * "stale" filesystem statistics.
332 */
333 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]);
334 if (nflag || error < 0)
335 if (i != j) {
336 if (error < 0)
337 warnx("%s stats possibly stale",
338 mntbuf[i].f_mntonname);
339 mntbuf[j] = mntbuf[i];
340 }
341 j++;
342 }
343 return (j);
344}
345
346static void
347prthuman(const struct statfs *sfsp, int64_t used)
348{
349
350 prthumanval(sfsp->f_blocks * sfsp->f_bsize);
351 prthumanval(used * sfsp->f_bsize);
352 prthumanval(sfsp->f_bavail * sfsp->f_bsize);
353}
354
355static void
356prthumanval(int64_t bytes)
357{
358 char buf[6];
359 int flags;
360
361 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
362 if (hflag == UNITS_SI)
363 flags |= HN_DIVISOR_1000;
364
365 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
366 bytes, "", HN_AUTOSCALE, flags);
367
368 (void)printf(" %6s", buf);
369}
370
371/*
372 * Print an inode count in "human-readable" format.
373 */
374static void
375prthumanvalinode(int64_t bytes)
376{
377 char buf[6];
378 int flags;
379
380 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
381
382 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
383 bytes, "", HN_AUTOSCALE, flags);
384
385 (void)printf(" %5s", buf);
386}
387
388/*
389 * Convert statfs returned file system size into BLOCKSIZE units.
390 * Attempts to avoid overflow for large file systems.
391 */
392static intmax_t
393fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
394{
395
396 if (fsbs != 0 && fsbs < bs)
397 return (num / (intmax_t)(bs / fsbs));
398 else
399 return (num * (intmax_t)(fsbs / bs));
400}
401
402/*
403 * Print out status about a file system.
404 */
405static void
406prtstat(struct statfs *sfsp, struct maxwidths *mwp)
407{
408 static long blocksize;
409 static int headerlen, timesthrough = 0;
410 static const char *header;
411 int64_t used, availblks, inodes;
412
413 if (++timesthrough == 1) {
414 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
415 mwp->fstype = imax(mwp->fstype, (int)strlen("Type"));
416 if (hflag) {
417 header = " Size";
418 mwp->total = mwp->used = mwp->avail =
419 (int)strlen(header);
420 } else {
421 header = getbsize(&headerlen, &blocksize);
422 mwp->total = imax(mwp->total, headerlen);
423 }
424 mwp->used = imax(mwp->used, (int)strlen("Used"));
425 mwp->avail = imax(mwp->avail, (int)strlen("Avail"));
426
427 (void)printf("%-*s", mwp->mntfrom, "Filesystem");
428 if (Tflag)
429 (void)printf(" %-*s", mwp->fstype, "Type");
430 (void)printf(" %-*s %*s %*s Capacity", mwp->total, header,
431 mwp->used, "Used", mwp->avail, "Avail");
432 if (iflag) {
433 mwp->iused = imax(hflag ? 0 : mwp->iused,
434 (int)strlen(" iused"));
435 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
436 (int)strlen("ifree"));
437 (void)printf(" %*s %*s %%iused",
438 mwp->iused - 2, "iused", mwp->ifree, "ifree");
439 }
440 (void)printf(" Mounted on\n");
441 }
442 (void)printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
443 if (Tflag)
444 (void)printf(" %-*s", mwp->fstype, sfsp->f_fstypename);
445 used = sfsp->f_blocks - sfsp->f_bfree;
446 availblks = sfsp->f_bavail + used;
447 if (hflag) {
448 prthuman(sfsp, used);
449 } else {
450 (void)printf(" %*jd %*jd %*jd",
451 mwp->total, fsbtoblk(sfsp->f_blocks,
452 sfsp->f_bsize, blocksize),
453 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
454 mwp->avail, fsbtoblk(sfsp->f_bavail,
455 sfsp->f_bsize, blocksize));
456 }
457 (void)printf(" %5.0f%%",
458 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
459 if (iflag) {
460 inodes = sfsp->f_files;
461 used = inodes - sfsp->f_ffree;
462 if (hflag) {
463 (void)printf(" ");
464 prthumanvalinode(used);
465 prthumanvalinode(sfsp->f_ffree);
466 } else {
467 (void)printf(" %*jd %*jd", mwp->iused, (intmax_t)used,
468 mwp->ifree, (intmax_t)sfsp->f_ffree);
469 }
470 (void)printf(" %4.0f%% ", inodes == 0 ? 100.0 :
471 (double)used / (double)inodes * 100.0);
472 } else
473 (void)printf(" ");
474 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0)
475 (void)printf(" %s", sfsp->f_mntonname);
476 (void)printf("\n");
477}
478
| 48
49#include <sys/param.h>
50#include <sys/stat.h>
51#include <sys/mount.h>
52#include <sys/sysctl.h>
53#include <ufs/ufs/ufsmount.h>
54#include <err.h>
55#include <libutil.h>
56#include <stdint.h>
57#include <stdio.h>
58#include <stdlib.h>
59#include <string.h>
60#include <sysexits.h>
61#include <unistd.h>
62
63#include "extern.h"
64
65#define UNITS_SI 1
66#define UNITS_2 2
67
68/* Maximum widths of various fields. */
69struct maxwidths {
70 int mntfrom;
71 int fstype;
72 int total;
73 int used;
74 int avail;
75 int iused;
76 int ifree;
77};
78
79static void addstat(struct statfs *, struct statfs *);
80static char *getmntpt(const char *);
81static int int64width(int64_t);
82static char *makenetvfslist(void);
83static void prthuman(const struct statfs *, int64_t);
84static void prthumanval(int64_t);
85static intmax_t fsbtoblk(int64_t, uint64_t, u_long);
86static void prtstat(struct statfs *, struct maxwidths *);
87static size_t regetmntinfo(struct statfs **, long, const char **);
88static void update_maxwidths(struct maxwidths *, const struct statfs *);
89static void usage(void);
90
91static __inline int
92imax(int a, int b)
93{
94 return (a > b ? a : b);
95}
96
97static int aflag = 0, cflag, hflag, iflag, kflag, lflag = 0, nflag, Tflag;
98static struct ufs_args mdev;
99
100int
101main(int argc, char *argv[])
102{
103 struct stat stbuf;
104 struct statfs statfsbuf, totalbuf;
105 struct maxwidths maxwidths;
106 struct statfs *mntbuf;
107 const char *fstype;
108 char *mntpath, *mntpt;
109 const char **vfslist;
110 size_t i, mntsize;
111 int ch, rv;
112
113 fstype = "ufs";
114
115 memset(&totalbuf, 0, sizeof(totalbuf));
116 totalbuf.f_bsize = DEV_BSIZE;
117 strlcpy(totalbuf.f_mntfromname, "total", MNAMELEN);
118 vfslist = NULL;
119 while ((ch = getopt(argc, argv, "abcgHhiklmnPt:T")) != -1)
120 switch (ch) {
121 case 'a':
122 aflag = 1;
123 break;
124 case 'b':
125 /* FALLTHROUGH */
126 case 'P':
127 /*
128 * POSIX specifically discusses the the behavior of
129 * both -k and -P. It states that the blocksize should
130 * be set to 1024. Thus, if this occurs, simply break
131 * rather than clobbering the old blocksize.
132 */
133 if (kflag)
134 break;
135 setenv("BLOCKSIZE", "512", 1);
136 hflag = 0;
137 break;
138 case 'c':
139 cflag = 1;
140 break;
141 case 'g':
142 setenv("BLOCKSIZE", "1g", 1);
143 hflag = 0;
144 break;
145 case 'H':
146 hflag = UNITS_SI;
147 break;
148 case 'h':
149 hflag = UNITS_2;
150 break;
151 case 'i':
152 iflag = 1;
153 break;
154 case 'k':
155 kflag++;
156 setenv("BLOCKSIZE", "1024", 1);
157 hflag = 0;
158 break;
159 case 'l':
160 if (vfslist != NULL)
161 errx(1, "-l and -t are mutually exclusive.");
162 vfslist = makevfslist(makenetvfslist());
163 lflag = 1;
164 break;
165 case 'm':
166 setenv("BLOCKSIZE", "1m", 1);
167 hflag = 0;
168 break;
169 case 'n':
170 nflag = 1;
171 break;
172 case 't':
173 if (lflag)
174 errx(1, "-l and -t are mutually exclusive.");
175 if (vfslist != NULL)
176 errx(1, "only one -t option may be specified");
177 fstype = optarg;
178 vfslist = makevfslist(optarg);
179 break;
180 case 'T':
181 Tflag = 1;
182 break;
183 case '?':
184 default:
185 usage();
186 }
187 argc -= optind;
188 argv += optind;
189
190 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
191 bzero(&maxwidths, sizeof(maxwidths));
192 for (i = 0; i < mntsize; i++)
193 update_maxwidths(&maxwidths, &mntbuf[i]);
194
195 rv = 0;
196 if (!*argv) {
197 mntsize = regetmntinfo(&mntbuf, mntsize, vfslist);
198 bzero(&maxwidths, sizeof(maxwidths));
199 for (i = 0; i < mntsize; i++) {
200 if (cflag)
201 addstat(&totalbuf, &mntbuf[i]);
202 update_maxwidths(&maxwidths, &mntbuf[i]);
203 }
204 if (cflag)
205 update_maxwidths(&maxwidths, &totalbuf);
206 for (i = 0; i < mntsize; i++)
207 if (aflag || (mntbuf[i].f_flags & MNT_IGNORE) == 0)
208 prtstat(&mntbuf[i], &maxwidths);
209 if (cflag)
210 prtstat(&totalbuf, &maxwidths);
211 exit(rv);
212 }
213
214 for (; *argv; argv++) {
215 if (stat(*argv, &stbuf) < 0) {
216 if ((mntpt = getmntpt(*argv)) == 0) {
217 warn("%s", *argv);
218 rv = 1;
219 continue;
220 }
221 } else if (S_ISCHR(stbuf.st_mode)) {
222 if ((mntpt = getmntpt(*argv)) == 0) {
223 mdev.fspec = *argv;
224 mntpath = strdup("/tmp/df.XXXXXX");
225 if (mntpath == NULL) {
226 warn("strdup failed");
227 rv = 1;
228 continue;
229 }
230 mntpt = mkdtemp(mntpath);
231 if (mntpt == NULL) {
232 warn("mkdtemp(\"%s\") failed", mntpath);
233 rv = 1;
234 free(mntpath);
235 continue;
236 }
237 if (mount(fstype, mntpt, MNT_RDONLY,
238 &mdev) != 0) {
239 warn("%s", *argv);
240 rv = 1;
241 (void)rmdir(mntpt);
242 free(mntpath);
243 continue;
244 } else if (statfs(mntpt, &statfsbuf) == 0) {
245 statfsbuf.f_mntonname[0] = '\0';
246 prtstat(&statfsbuf, &maxwidths);
247 if (cflag)
248 addstat(&totalbuf, &statfsbuf);
249 } else {
250 warn("%s", *argv);
251 rv = 1;
252 }
253 (void)unmount(mntpt, 0);
254 (void)rmdir(mntpt);
255 free(mntpath);
256 continue;
257 }
258 } else
259 mntpt = *argv;
260
261 /*
262 * Statfs does not take a `wait' flag, so we cannot
263 * implement nflag here.
264 */
265 if (statfs(mntpt, &statfsbuf) < 0) {
266 warn("%s", mntpt);
267 rv = 1;
268 continue;
269 }
270
271 /*
272 * Check to make sure the arguments we've been given are
273 * satisfied. Return an error if we have been asked to
274 * list a mount point that does not match the other args
275 * we've been given (-l, -t, etc.).
276 */
277 if (checkvfsname(statfsbuf.f_fstypename, vfslist)) {
278 rv = 1;
279 continue;
280 }
281
282 if (argc == 1) {
283 bzero(&maxwidths, sizeof(maxwidths));
284 update_maxwidths(&maxwidths, &statfsbuf);
285 }
286 prtstat(&statfsbuf, &maxwidths);
287 if (cflag)
288 addstat(&totalbuf, &statfsbuf);
289 }
290 if (cflag)
291 prtstat(&totalbuf, &maxwidths);
292 return (rv);
293}
294
295static char *
296getmntpt(const char *name)
297{
298 size_t mntsize, i;
299 struct statfs *mntbuf;
300
301 mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
302 for (i = 0; i < mntsize; i++) {
303 if (!strcmp(mntbuf[i].f_mntfromname, name))
304 return (mntbuf[i].f_mntonname);
305 }
306 return (0);
307}
308
309/*
310 * Make a pass over the file system info in ``mntbuf'' filtering out
311 * file system types not in vfslist and possibly re-stating to get
312 * current (not cached) info. Returns the new count of valid statfs bufs.
313 */
314static size_t
315regetmntinfo(struct statfs **mntbufp, long mntsize, const char **vfslist)
316{
317 int error, i, j;
318 struct statfs *mntbuf;
319
320 if (vfslist == NULL)
321 return (nflag ? mntsize : getmntinfo(mntbufp, MNT_WAIT));
322
323 mntbuf = *mntbufp;
324 for (j = 0, i = 0; i < mntsize; i++) {
325 if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
326 continue;
327 /*
328 * XXX statfs(2) can fail for various reasons. It may be
329 * possible that the user does not have access to the
330 * pathname, if this happens, we will fall back on
331 * "stale" filesystem statistics.
332 */
333 error = statfs(mntbuf[i].f_mntonname, &mntbuf[j]);
334 if (nflag || error < 0)
335 if (i != j) {
336 if (error < 0)
337 warnx("%s stats possibly stale",
338 mntbuf[i].f_mntonname);
339 mntbuf[j] = mntbuf[i];
340 }
341 j++;
342 }
343 return (j);
344}
345
346static void
347prthuman(const struct statfs *sfsp, int64_t used)
348{
349
350 prthumanval(sfsp->f_blocks * sfsp->f_bsize);
351 prthumanval(used * sfsp->f_bsize);
352 prthumanval(sfsp->f_bavail * sfsp->f_bsize);
353}
354
355static void
356prthumanval(int64_t bytes)
357{
358 char buf[6];
359 int flags;
360
361 flags = HN_B | HN_NOSPACE | HN_DECIMAL;
362 if (hflag == UNITS_SI)
363 flags |= HN_DIVISOR_1000;
364
365 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
366 bytes, "", HN_AUTOSCALE, flags);
367
368 (void)printf(" %6s", buf);
369}
370
371/*
372 * Print an inode count in "human-readable" format.
373 */
374static void
375prthumanvalinode(int64_t bytes)
376{
377 char buf[6];
378 int flags;
379
380 flags = HN_NOSPACE | HN_DECIMAL | HN_DIVISOR_1000;
381
382 humanize_number(buf, sizeof(buf) - (bytes < 0 ? 0 : 1),
383 bytes, "", HN_AUTOSCALE, flags);
384
385 (void)printf(" %5s", buf);
386}
387
388/*
389 * Convert statfs returned file system size into BLOCKSIZE units.
390 * Attempts to avoid overflow for large file systems.
391 */
392static intmax_t
393fsbtoblk(int64_t num, uint64_t fsbs, u_long bs)
394{
395
396 if (fsbs != 0 && fsbs < bs)
397 return (num / (intmax_t)(bs / fsbs));
398 else
399 return (num * (intmax_t)(fsbs / bs));
400}
401
402/*
403 * Print out status about a file system.
404 */
405static void
406prtstat(struct statfs *sfsp, struct maxwidths *mwp)
407{
408 static long blocksize;
409 static int headerlen, timesthrough = 0;
410 static const char *header;
411 int64_t used, availblks, inodes;
412
413 if (++timesthrough == 1) {
414 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen("Filesystem"));
415 mwp->fstype = imax(mwp->fstype, (int)strlen("Type"));
416 if (hflag) {
417 header = " Size";
418 mwp->total = mwp->used = mwp->avail =
419 (int)strlen(header);
420 } else {
421 header = getbsize(&headerlen, &blocksize);
422 mwp->total = imax(mwp->total, headerlen);
423 }
424 mwp->used = imax(mwp->used, (int)strlen("Used"));
425 mwp->avail = imax(mwp->avail, (int)strlen("Avail"));
426
427 (void)printf("%-*s", mwp->mntfrom, "Filesystem");
428 if (Tflag)
429 (void)printf(" %-*s", mwp->fstype, "Type");
430 (void)printf(" %-*s %*s %*s Capacity", mwp->total, header,
431 mwp->used, "Used", mwp->avail, "Avail");
432 if (iflag) {
433 mwp->iused = imax(hflag ? 0 : mwp->iused,
434 (int)strlen(" iused"));
435 mwp->ifree = imax(hflag ? 0 : mwp->ifree,
436 (int)strlen("ifree"));
437 (void)printf(" %*s %*s %%iused",
438 mwp->iused - 2, "iused", mwp->ifree, "ifree");
439 }
440 (void)printf(" Mounted on\n");
441 }
442 (void)printf("%-*s", mwp->mntfrom, sfsp->f_mntfromname);
443 if (Tflag)
444 (void)printf(" %-*s", mwp->fstype, sfsp->f_fstypename);
445 used = sfsp->f_blocks - sfsp->f_bfree;
446 availblks = sfsp->f_bavail + used;
447 if (hflag) {
448 prthuman(sfsp, used);
449 } else {
450 (void)printf(" %*jd %*jd %*jd",
451 mwp->total, fsbtoblk(sfsp->f_blocks,
452 sfsp->f_bsize, blocksize),
453 mwp->used, fsbtoblk(used, sfsp->f_bsize, blocksize),
454 mwp->avail, fsbtoblk(sfsp->f_bavail,
455 sfsp->f_bsize, blocksize));
456 }
457 (void)printf(" %5.0f%%",
458 availblks == 0 ? 100.0 : (double)used / (double)availblks * 100.0);
459 if (iflag) {
460 inodes = sfsp->f_files;
461 used = inodes - sfsp->f_ffree;
462 if (hflag) {
463 (void)printf(" ");
464 prthumanvalinode(used);
465 prthumanvalinode(sfsp->f_ffree);
466 } else {
467 (void)printf(" %*jd %*jd", mwp->iused, (intmax_t)used,
468 mwp->ifree, (intmax_t)sfsp->f_ffree);
469 }
470 (void)printf(" %4.0f%% ", inodes == 0 ? 100.0 :
471 (double)used / (double)inodes * 100.0);
472 } else
473 (void)printf(" ");
474 if (strncmp(sfsp->f_mntfromname, "total", MNAMELEN) != 0)
475 (void)printf(" %s", sfsp->f_mntonname);
476 (void)printf("\n");
477}
478
|
480addstat(struct statfs *totalfsp, struct statfs *statfsp)
481{
482 uint64_t bsize;
483
484 bsize = statfsp->f_bsize / totalfsp->f_bsize;
485 totalfsp->f_blocks += statfsp->f_blocks * bsize;
486 totalfsp->f_bfree += statfsp->f_bfree * bsize;
487 totalfsp->f_bavail += statfsp->f_bavail * bsize;
488 totalfsp->f_files += statfsp->f_files;
489 totalfsp->f_ffree += statfsp->f_ffree;
490}
491
492/*
493 * Update the maximum field-width information in `mwp' based on
494 * the file system specified by `sfsp'.
495 */
496static void
497update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp)
498{
499 static long blocksize = 0;
500 int dummy;
501
502 if (blocksize == 0)
503 getbsize(&dummy, &blocksize);
504
505 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
506 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename));
507 mwp->total = imax(mwp->total, int64width(
508 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize)));
509 mwp->used = imax(mwp->used,
510 int64width(fsbtoblk((int64_t)sfsp->f_blocks -
511 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize)));
512 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
513 sfsp->f_bsize, blocksize)));
514 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files -
515 sfsp->f_ffree));
516 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
517}
518
519/* Return the width in characters of the specified value. */
520static int
521int64width(int64_t val)
522{
523 int len;
524
525 len = 0;
526 /* Negative or zero values require one extra digit. */
527 if (val <= 0) {
528 val = -val;
529 len++;
530 }
531 while (val > 0) {
532 len++;
533 val /= 10;
534 }
535
536 return (len);
537}
538
539static void
540usage(void)
541{
542
543 (void)fprintf(stderr,
544"usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [file | filesystem ...]\n");
545 exit(EX_USAGE);
546}
547
548static char *
549makenetvfslist(void)
550{
551 char *str, *strptr, **listptr;
552 struct xvfsconf *xvfsp, *keep_xvfsp;
553 size_t buflen;
554 int cnt, i, maxvfsconf;
555
556 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
557 warn("sysctl(vfs.conflist)");
558 return (NULL);
559 }
560 xvfsp = malloc(buflen);
561 if (xvfsp == NULL) {
562 warnx("malloc failed");
563 return (NULL);
564 }
565 keep_xvfsp = xvfsp;
566 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
567 warn("sysctl(vfs.conflist)");
568 free(keep_xvfsp);
569 return (NULL);
570 }
571 maxvfsconf = buflen / sizeof(struct xvfsconf);
572
573 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
574 warnx("malloc failed");
575 free(keep_xvfsp);
576 return (NULL);
577 }
578
579 for (cnt = 0, i = 0; i < maxvfsconf; i++) {
580 if (xvfsp->vfc_flags & VFCF_NETWORK) {
581 listptr[cnt++] = strdup(xvfsp->vfc_name);
582 if (listptr[cnt-1] == NULL) {
583 warnx("malloc failed");
584 free(listptr);
585 free(keep_xvfsp);
586 return (NULL);
587 }
588 }
589 xvfsp++;
590 }
591
592 if (cnt == 0 ||
593 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
594 if (cnt > 0)
595 warnx("malloc failed");
596 free(listptr);
597 free(keep_xvfsp);
598 return (NULL);
599 }
600
601 *str = 'n'; *(str + 1) = 'o';
602 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
603 strlcpy(strptr, listptr[i], 32);
604 strptr += strlen(listptr[i]);
605 *strptr = ',';
606 free(listptr[i]);
607 }
608 *(--strptr) = '\0';
609
610 free(keep_xvfsp);
611 free(listptr);
612 return (str);
613}
| 480addstat(struct statfs *totalfsp, struct statfs *statfsp)
481{
482 uint64_t bsize;
483
484 bsize = statfsp->f_bsize / totalfsp->f_bsize;
485 totalfsp->f_blocks += statfsp->f_blocks * bsize;
486 totalfsp->f_bfree += statfsp->f_bfree * bsize;
487 totalfsp->f_bavail += statfsp->f_bavail * bsize;
488 totalfsp->f_files += statfsp->f_files;
489 totalfsp->f_ffree += statfsp->f_ffree;
490}
491
492/*
493 * Update the maximum field-width information in `mwp' based on
494 * the file system specified by `sfsp'.
495 */
496static void
497update_maxwidths(struct maxwidths *mwp, const struct statfs *sfsp)
498{
499 static long blocksize = 0;
500 int dummy;
501
502 if (blocksize == 0)
503 getbsize(&dummy, &blocksize);
504
505 mwp->mntfrom = imax(mwp->mntfrom, (int)strlen(sfsp->f_mntfromname));
506 mwp->fstype = imax(mwp->fstype, (int)strlen(sfsp->f_fstypename));
507 mwp->total = imax(mwp->total, int64width(
508 fsbtoblk((int64_t)sfsp->f_blocks, sfsp->f_bsize, blocksize)));
509 mwp->used = imax(mwp->used,
510 int64width(fsbtoblk((int64_t)sfsp->f_blocks -
511 (int64_t)sfsp->f_bfree, sfsp->f_bsize, blocksize)));
512 mwp->avail = imax(mwp->avail, int64width(fsbtoblk(sfsp->f_bavail,
513 sfsp->f_bsize, blocksize)));
514 mwp->iused = imax(mwp->iused, int64width((int64_t)sfsp->f_files -
515 sfsp->f_ffree));
516 mwp->ifree = imax(mwp->ifree, int64width(sfsp->f_ffree));
517}
518
519/* Return the width in characters of the specified value. */
520static int
521int64width(int64_t val)
522{
523 int len;
524
525 len = 0;
526 /* Negative or zero values require one extra digit. */
527 if (val <= 0) {
528 val = -val;
529 len++;
530 }
531 while (val > 0) {
532 len++;
533 val /= 10;
534 }
535
536 return (len);
537}
538
539static void
540usage(void)
541{
542
543 (void)fprintf(stderr,
544"usage: df [-b | -g | -H | -h | -k | -m | -P] [-acilnT] [-t type] [file | filesystem ...]\n");
545 exit(EX_USAGE);
546}
547
548static char *
549makenetvfslist(void)
550{
551 char *str, *strptr, **listptr;
552 struct xvfsconf *xvfsp, *keep_xvfsp;
553 size_t buflen;
554 int cnt, i, maxvfsconf;
555
556 if (sysctlbyname("vfs.conflist", NULL, &buflen, NULL, 0) < 0) {
557 warn("sysctl(vfs.conflist)");
558 return (NULL);
559 }
560 xvfsp = malloc(buflen);
561 if (xvfsp == NULL) {
562 warnx("malloc failed");
563 return (NULL);
564 }
565 keep_xvfsp = xvfsp;
566 if (sysctlbyname("vfs.conflist", xvfsp, &buflen, NULL, 0) < 0) {
567 warn("sysctl(vfs.conflist)");
568 free(keep_xvfsp);
569 return (NULL);
570 }
571 maxvfsconf = buflen / sizeof(struct xvfsconf);
572
573 if ((listptr = malloc(sizeof(char*) * maxvfsconf)) == NULL) {
574 warnx("malloc failed");
575 free(keep_xvfsp);
576 return (NULL);
577 }
578
579 for (cnt = 0, i = 0; i < maxvfsconf; i++) {
580 if (xvfsp->vfc_flags & VFCF_NETWORK) {
581 listptr[cnt++] = strdup(xvfsp->vfc_name);
582 if (listptr[cnt-1] == NULL) {
583 warnx("malloc failed");
584 free(listptr);
585 free(keep_xvfsp);
586 return (NULL);
587 }
588 }
589 xvfsp++;
590 }
591
592 if (cnt == 0 ||
593 (str = malloc(sizeof(char) * (32 * cnt + cnt + 2))) == NULL) {
594 if (cnt > 0)
595 warnx("malloc failed");
596 free(listptr);
597 free(keep_xvfsp);
598 return (NULL);
599 }
600
601 *str = 'n'; *(str + 1) = 'o';
602 for (i = 0, strptr = str + 2; i < cnt; i++, strptr++) {
603 strlcpy(strptr, listptr[i], 32);
604 strptr += strlen(listptr[i]);
605 *strptr = ',';
606 free(listptr[i]);
607 }
608 *(--strptr) = '\0';
609
610 free(keep_xvfsp);
611 free(listptr);
612 return (str);
613}
|