1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 /*
33 * tunefs: change layout parameters to an existing file system.
34 */
35 #include <sys/param.h>
36 #include <sys/mount.h>
37 #include <sys/disklabel.h>
38 #include <sys/stat.h>
39
40 #include <ufs/ufs/extattr.h>
41 #include <ufs/ufs/quota.h>
42 #include <ufs/ufs/ufsmount.h>
43 #include <ufs/ufs/dinode.h>
44 #include <ufs/ffs/fs.h>
45 #include <ufs/ufs/dir.h>
46
47 #include <ctype.h>
48 #include <err.h>
49 #include <fcntl.h>
50 #include <fstab.h>
51 #include <libufs.h>
52 #include <mntopts.h>
53 #include <paths.h>
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <stdint.h>
57 #include <string.h>
58 #include <time.h>
59 #include <unistd.h>
60
61 /* the optimization warning string template */
62 #define OPTWARN "should optimize for %s with minfree %s %d%%"
63
64 static int blocks;
65 static char clrbuf[MAXBSIZE];
66 static struct uufsd disk;
67 #define sblock disk.d_fs
68
69 static void usage(void) __dead2;
70 static void printfs(void);
71 static int journal_alloc(int64_t size);
72 static void journal_clear(void);
73 static void sbdirty(void);
74
75 int
main(int argc,char * argv[])76 main(int argc, char *argv[])
77 {
78 const char *avalue, *jvalue, *Jvalue, *Lvalue, *lvalue, *Nvalue, *nvalue;
79 const char *tvalue;
80 const char *special;
81 const char *name;
82 char *diskname;
83 int Aflag, aflag, eflag, evalue, fflag, fvalue, jflag, Jflag, kflag;
84 int kvalue, Lflag, lflag, mflag, mvalue, Nflag, nflag, oflag, ovalue;
85 int pflag, sflag, svalue, Svalue, tflag;
86 int ch, found_arg, i;
87 const char *chg[2];
88
89 if (argc < 3)
90 usage();
91 Aflag = aflag = eflag = fflag = jflag = Jflag = kflag = Lflag = 0;
92 lflag = mflag = Nflag = nflag = oflag = pflag = sflag = tflag = 0;
93 avalue = jvalue = Jvalue = Lvalue = lvalue = Nvalue = nvalue = NULL;
94 evalue = fvalue = mvalue = ovalue = svalue = Svalue = 0;
95 found_arg = 0; /* At least one arg is required. */
96 while ((ch = getopt(argc, argv, "Aa:e:f:j:J:k:L:l:m:N:n:o:ps:S:t:"))
97 != -1)
98 switch (ch) {
99
100 case 'A':
101 found_arg++;
102 Aflag++;
103 break;
104
105 case 'a':
106 found_arg++;
107 name = "POSIX.1e ACLs";
108 avalue = optarg;
109 if (strcmp(avalue, "enable") &&
110 strcmp(avalue, "disable")) {
111 errx(10, "bad %s (options are %s)",
112 name, "`enable' or `disable'");
113 }
114 aflag = 1;
115 break;
116
117 case 'e':
118 found_arg++;
119 name = "maximum blocks per file in a cylinder group";
120 evalue = atoi(optarg);
121 if (evalue < 1)
122 errx(10, "%s must be >= 1 (was %s)",
123 name, optarg);
124 eflag = 1;
125 break;
126
127 case 'f':
128 found_arg++;
129 name = "average file size";
130 fvalue = atoi(optarg);
131 if (fvalue < 1)
132 errx(10, "%s must be >= 1 (was %s)",
133 name, optarg);
134 fflag = 1;
135 break;
136
137 case 'j':
138 found_arg++;
139 name = "softdep journaled file system";
140 jvalue = optarg;
141 if (strcmp(jvalue, "enable") &&
142 strcmp(jvalue, "disable")) {
143 errx(10, "bad %s (options are %s)",
144 name, "`enable' or `disable'");
145 }
146 jflag = 1;
147 break;
148
149 case 'J':
150 found_arg++;
151 name = "gjournaled file system";
152 Jvalue = optarg;
153 if (strcmp(Jvalue, "enable") &&
154 strcmp(Jvalue, "disable")) {
155 errx(10, "bad %s (options are %s)",
156 name, "`enable' or `disable'");
157 }
158 Jflag = 1;
159 break;
160
161 case 'k':
162 found_arg++;
163 name = "space to hold for metadata blocks";
164 kvalue = atoi(optarg);
165 if (kvalue < 0)
166 errx(10, "bad %s (%s)", name, optarg);
167 kflag = 1;
168 break;
169
170 case 'L':
171 found_arg++;
172 name = "volume label";
173 Lvalue = optarg;
174 i = -1;
175 while (isalnum(Lvalue[++i]) || Lvalue[i] == '_' ||
176 Lvalue[i] == '-')
177 ;
178 if (Lvalue[i] != '\0') {
179 errx(10, "bad %s. Valid characters are "
180 "alphanumerics, dashes, and underscores.",
181 name);
182 }
183 if (strlen(Lvalue) >= MAXVOLLEN) {
184 errx(10, "bad %s. Length is longer than %d.",
185 name, MAXVOLLEN - 1);
186 }
187 Lflag = 1;
188 break;
189
190 case 'l':
191 found_arg++;
192 name = "multilabel MAC file system";
193 lvalue = optarg;
194 if (strcmp(lvalue, "enable") &&
195 strcmp(lvalue, "disable")) {
196 errx(10, "bad %s (options are %s)",
197 name, "`enable' or `disable'");
198 }
199 lflag = 1;
200 break;
201
202 case 'm':
203 found_arg++;
204 name = "minimum percentage of free space";
205 mvalue = atoi(optarg);
206 if (mvalue < 0 || mvalue > 99)
207 errx(10, "bad %s (%s)", name, optarg);
208 mflag = 1;
209 break;
210
211 case 'N':
212 found_arg++;
213 name = "NFSv4 ACLs";
214 Nvalue = optarg;
215 if (strcmp(Nvalue, "enable") &&
216 strcmp(Nvalue, "disable")) {
217 errx(10, "bad %s (options are %s)",
218 name, "`enable' or `disable'");
219 }
220 Nflag = 1;
221 break;
222
223 case 'n':
224 found_arg++;
225 name = "soft updates";
226 nvalue = optarg;
227 if (strcmp(nvalue, "enable") != 0 &&
228 strcmp(nvalue, "disable") != 0) {
229 errx(10, "bad %s (options are %s)",
230 name, "`enable' or `disable'");
231 }
232 nflag = 1;
233 break;
234
235 case 'o':
236 found_arg++;
237 name = "optimization preference";
238 if (strcmp(optarg, "space") == 0)
239 ovalue = FS_OPTSPACE;
240 else if (strcmp(optarg, "time") == 0)
241 ovalue = FS_OPTTIME;
242 else
243 errx(10,
244 "bad %s (options are `space' or `time')",
245 name);
246 oflag = 1;
247 break;
248
249 case 'p':
250 found_arg++;
251 pflag = 1;
252 break;
253
254 case 's':
255 found_arg++;
256 name = "expected number of files per directory";
257 svalue = atoi(optarg);
258 if (svalue < 1)
259 errx(10, "%s must be >= 1 (was %s)",
260 name, optarg);
261 sflag = 1;
262 break;
263
264 case 'S':
265 found_arg++;
266 name = "Softdep Journal Size";
267 Svalue = atoi(optarg);
268 if (Svalue < SUJ_MIN)
269 errx(10, "%s must be >= %d (was %s)",
270 name, SUJ_MIN, optarg);
271 break;
272
273 case 't':
274 found_arg++;
275 name = "trim";
276 tvalue = optarg;
277 if (strcmp(tvalue, "enable") != 0 &&
278 strcmp(tvalue, "disable") != 0) {
279 errx(10, "bad %s (options are %s)",
280 name, "`enable' or `disable'");
281 }
282 tflag = 1;
283 break;
284
285 default:
286 usage();
287 }
288 argc -= optind;
289 argv += optind;
290 if (found_arg == 0 || argc != 1)
291 usage();
292
293 special = argv[0];
294 if (ufs_disk_fillout(&disk, special) == -1)
295 goto err;
296 /*
297 * Check for unclean filesystem.
298 */
299 if ((sblock.fs_clean == 0 ||
300 (sblock.fs_flags & (FS_UNCLEAN | FS_NEEDSFSCK)) != 0) &&
301 (found_arg > 1 || !pflag))
302 errx(1, "%s is not clean - run fsck.\n", special);
303 if (pflag) {
304 printfs();
305 exit(0);
306 }
307 if (Lflag) {
308 name = "volume label";
309 strncpy(sblock.fs_volname, Lvalue, MAXVOLLEN);
310 }
311 if (aflag) {
312 name = "POSIX.1e ACLs";
313 if (strcmp(avalue, "enable") == 0) {
314 if (sblock.fs_flags & FS_ACLS) {
315 warnx("%s remains unchanged as enabled", name);
316 } else if (sblock.fs_flags & FS_NFS4ACLS) {
317 warnx("%s and NFSv4 ACLs are mutually "
318 "exclusive", name);
319 } else {
320 sblock.fs_flags |= FS_ACLS;
321 warnx("%s set", name);
322 }
323 } else if (strcmp(avalue, "disable") == 0) {
324 if ((~sblock.fs_flags & FS_ACLS) ==
325 FS_ACLS) {
326 warnx("%s remains unchanged as disabled",
327 name);
328 } else {
329 sblock.fs_flags &= ~FS_ACLS;
330 warnx("%s cleared", name);
331 }
332 }
333 }
334 if (eflag) {
335 name = "maximum blocks per file in a cylinder group";
336 if (sblock.fs_maxbpg == evalue)
337 warnx("%s remains unchanged as %d", name, evalue);
338 else {
339 warnx("%s changes from %d to %d",
340 name, sblock.fs_maxbpg, evalue);
341 sblock.fs_maxbpg = evalue;
342 }
343 }
344 if (fflag) {
345 name = "average file size";
346 if (sblock.fs_avgfilesize == (unsigned)fvalue) {
347 warnx("%s remains unchanged as %d", name, fvalue);
348 }
349 else {
350 warnx("%s changes from %d to %d",
351 name, sblock.fs_avgfilesize, fvalue);
352 sblock.fs_avgfilesize = fvalue;
353 }
354 }
355 if (jflag) {
356 name = "soft updates journaling";
357 if (strcmp(jvalue, "enable") == 0) {
358 if ((sblock.fs_flags & (FS_DOSOFTDEP | FS_SUJ)) ==
359 (FS_DOSOFTDEP | FS_SUJ)) {
360 warnx("%s remains unchanged as enabled", name);
361 } else if (sblock.fs_clean == 0) {
362 warnx("%s cannot be enabled until fsck is run",
363 name);
364 } else if (journal_alloc(Svalue) != 0) {
365 warnx("%s cannot be enabled", name);
366 } else {
367 sblock.fs_flags |= FS_DOSOFTDEP | FS_SUJ;
368 warnx("%s set", name);
369 }
370 } else if (strcmp(jvalue, "disable") == 0) {
371 if ((~sblock.fs_flags & FS_SUJ) == FS_SUJ) {
372 warnx("%s remains unchanged as disabled", name);
373 } else {
374 journal_clear();
375 sblock.fs_flags &= ~FS_SUJ;
376 sblock.fs_sujfree = 0;
377 warnx("%s cleared but soft updates still set.",
378 name);
379
380 warnx("remove .sujournal to reclaim space");
381 }
382 }
383 }
384 if (Jflag) {
385 name = "gjournal";
386 if (strcmp(Jvalue, "enable") == 0) {
387 if (sblock.fs_flags & FS_GJOURNAL) {
388 warnx("%s remains unchanged as enabled", name);
389 } else {
390 sblock.fs_flags |= FS_GJOURNAL;
391 warnx("%s set", name);
392 }
393 } else if (strcmp(Jvalue, "disable") == 0) {
394 if ((~sblock.fs_flags & FS_GJOURNAL) ==
395 FS_GJOURNAL) {
396 warnx("%s remains unchanged as disabled",
397 name);
398 } else {
399 sblock.fs_flags &= ~FS_GJOURNAL;
400 warnx("%s cleared", name);
401 }
402 }
403 }
404 if (kflag) {
405 name = "space to hold for metadata blocks";
406 if (sblock.fs_metaspace == kvalue)
407 warnx("%s remains unchanged as %d", name, kvalue);
408 else {
409 kvalue = blknum(&sblock, kvalue);
410 if (kvalue > sblock.fs_fpg / 2) {
411 kvalue = blknum(&sblock, sblock.fs_fpg / 2);
412 warnx("%s cannot exceed half the file system "
413 "space", name);
414 }
415 warnx("%s changes from %jd to %d",
416 name, sblock.fs_metaspace, kvalue);
417 sblock.fs_metaspace = kvalue;
418 }
419 }
420 if (lflag) {
421 name = "multilabel";
422 if (strcmp(lvalue, "enable") == 0) {
423 if (sblock.fs_flags & FS_MULTILABEL) {
424 warnx("%s remains unchanged as enabled", name);
425 } else {
426 sblock.fs_flags |= FS_MULTILABEL;
427 warnx("%s set", name);
428 }
429 } else if (strcmp(lvalue, "disable") == 0) {
430 if ((~sblock.fs_flags & FS_MULTILABEL) ==
431 FS_MULTILABEL) {
432 warnx("%s remains unchanged as disabled",
433 name);
434 } else {
435 sblock.fs_flags &= ~FS_MULTILABEL;
436 warnx("%s cleared", name);
437 }
438 }
439 }
440 if (mflag) {
441 name = "minimum percentage of free space";
442 if (sblock.fs_minfree == mvalue)
443 warnx("%s remains unchanged as %d%%", name, mvalue);
444 else {
445 warnx("%s changes from %d%% to %d%%",
446 name, sblock.fs_minfree, mvalue);
447 sblock.fs_minfree = mvalue;
448 if (mvalue >= MINFREE && sblock.fs_optim == FS_OPTSPACE)
449 warnx(OPTWARN, "time", ">=", MINFREE);
450 if (mvalue < MINFREE && sblock.fs_optim == FS_OPTTIME)
451 warnx(OPTWARN, "space", "<", MINFREE);
452 }
453 }
454 if (Nflag) {
455 name = "NFSv4 ACLs";
456 if (strcmp(Nvalue, "enable") == 0) {
457 if (sblock.fs_flags & FS_NFS4ACLS) {
458 warnx("%s remains unchanged as enabled", name);
459 } else if (sblock.fs_flags & FS_ACLS) {
460 warnx("%s and POSIX.1e ACLs are mutually "
461 "exclusive", name);
462 } else {
463 sblock.fs_flags |= FS_NFS4ACLS;
464 warnx("%s set", name);
465 }
466 } else if (strcmp(Nvalue, "disable") == 0) {
467 if ((~sblock.fs_flags & FS_NFS4ACLS) ==
468 FS_NFS4ACLS) {
469 warnx("%s remains unchanged as disabled",
470 name);
471 } else {
472 sblock.fs_flags &= ~FS_NFS4ACLS;
473 warnx("%s cleared", name);
474 }
475 }
476 }
477 if (nflag) {
478 name = "soft updates";
479 if (strcmp(nvalue, "enable") == 0) {
480 if (sblock.fs_flags & FS_DOSOFTDEP)
481 warnx("%s remains unchanged as enabled", name);
482 else if (sblock.fs_clean == 0) {
483 warnx("%s cannot be enabled until fsck is run",
484 name);
485 } else {
486 sblock.fs_flags |= FS_DOSOFTDEP;
487 warnx("%s set", name);
488 }
489 } else if (strcmp(nvalue, "disable") == 0) {
490 if ((~sblock.fs_flags & FS_DOSOFTDEP) == FS_DOSOFTDEP)
491 warnx("%s remains unchanged as disabled", name);
492 else {
493 sblock.fs_flags &= ~FS_DOSOFTDEP;
494 warnx("%s cleared", name);
495 }
496 }
497 }
498 if (oflag) {
499 name = "optimization preference";
500 chg[FS_OPTSPACE] = "space";
501 chg[FS_OPTTIME] = "time";
502 if (sblock.fs_optim == ovalue)
503 warnx("%s remains unchanged as %s", name, chg[ovalue]);
504 else {
505 warnx("%s changes from %s to %s",
506 name, chg[sblock.fs_optim], chg[ovalue]);
507 sblock.fs_optim = ovalue;
508 if (sblock.fs_minfree >= MINFREE &&
509 ovalue == FS_OPTSPACE)
510 warnx(OPTWARN, "time", ">=", MINFREE);
511 if (sblock.fs_minfree < MINFREE && ovalue == FS_OPTTIME)
512 warnx(OPTWARN, "space", "<", MINFREE);
513 }
514 }
515 if (sflag) {
516 name = "expected number of files per directory";
517 if (sblock.fs_avgfpdir == (unsigned)svalue) {
518 warnx("%s remains unchanged as %d", name, svalue);
519 }
520 else {
521 warnx("%s changes from %d to %d",
522 name, sblock.fs_avgfpdir, svalue);
523 sblock.fs_avgfpdir = svalue;
524 }
525 }
526 if (tflag) {
527 name = "issue TRIM to the disk";
528 if (strcmp(tvalue, "enable") == 0) {
529 if (sblock.fs_flags & FS_TRIM)
530 warnx("%s remains unchanged as enabled", name);
531 else {
532 sblock.fs_flags |= FS_TRIM;
533 warnx("%s set", name);
534 }
535 } else if (strcmp(tvalue, "disable") == 0) {
536 if ((~sblock.fs_flags & FS_TRIM) == FS_TRIM)
537 warnx("%s remains unchanged as disabled", name);
538 else {
539 sblock.fs_flags &= ~FS_TRIM;
540 warnx("%s cleared", name);
541 }
542 }
543 }
544
545 if (sbwrite(&disk, Aflag) == -1)
546 goto err;
547 diskname = strdup(disk.d_name);
548 ufs_disk_close(&disk);
549 chkdoreload(getmntpoint(diskname), warnx);
550 exit(0);
551 err:
552 if (disk.d_error != NULL)
553 errx(11, "%s: %s", special, disk.d_error);
554 else
555 err(12, "%s", special);
556 }
557
558 static void
sbdirty(void)559 sbdirty(void)
560 {
561 disk.d_fs.fs_flags |= FS_UNCLEAN | FS_NEEDSFSCK;
562 disk.d_fs.fs_clean = 0;
563 }
564
565 static ufs2_daddr_t
journal_balloc(void)566 journal_balloc(void)
567 {
568 ufs2_daddr_t blk;
569 struct cg *cgp;
570 int valid;
571 static int contig = 1;
572
573 cgp = &disk.d_cg;
574 for (;;) {
575 blk = cgballoc(&disk);
576 if (blk > 0)
577 break;
578 /*
579 * If we failed to allocate a block from this cg, move to
580 * the next.
581 */
582 if (cgwrite(&disk) < 0) {
583 warn("Failed to write updated cg");
584 return (-1);
585 }
586 while ((valid = cgread(&disk)) == 1) {
587 /*
588 * Try to minimize fragmentation by requiring a minimum
589 * number of blocks present.
590 */
591 if (cgp->cg_cs.cs_nbfree > 256 * 1024)
592 break;
593 if (contig == 0 && cgp->cg_cs.cs_nbfree)
594 break;
595 }
596 if (valid)
597 continue;
598 /*
599 * Try once through looking only for large contiguous regions
600 * and again taking any space we can find.
601 */
602 if (contig) {
603 contig = 0;
604 disk.d_ccg = 0;
605 warnx("Journal file fragmented.");
606 continue;
607 }
608 warnx("Failed to find sufficient free blocks for the journal");
609 return -1;
610 }
611 if (bwrite(&disk, fsbtodb(&sblock, blk), clrbuf,
612 sblock.fs_bsize) <= 0) {
613 warn("Failed to initialize new block");
614 return -1;
615 }
616 return (blk);
617 }
618
619 /*
620 * Search a directory block for the SUJ_FILE.
621 */
622 static ino_t
dir_search(ufs2_daddr_t blk,int bytes)623 dir_search(ufs2_daddr_t blk, int bytes)
624 {
625 char block[MAXBSIZE];
626 struct direct *dp;
627 int off;
628
629 if (bread(&disk, fsbtodb(&sblock, blk), block, bytes) <= 0) {
630 warn("Failed to read dir block");
631 return (-1);
632 }
633 for (off = 0; off < bytes; off += dp->d_reclen) {
634 dp = (struct direct *)&block[off];
635 if (dp->d_reclen == 0)
636 break;
637 if (dp->d_ino == 0)
638 continue;
639 if (dp->d_namlen != strlen(SUJ_FILE))
640 continue;
641 if (bcmp(dp->d_name, SUJ_FILE, dp->d_namlen) != 0)
642 continue;
643 return (dp->d_ino);
644 }
645
646 return (0);
647 }
648
649 /*
650 * Search in the UFS_ROOTINO for the SUJ_FILE. If it exists we can not enable
651 * journaling.
652 */
653 static ino_t
journal_findfile(void)654 journal_findfile(void)
655 {
656 union dinodep dp;
657 ino_t ino;
658 int i;
659
660 if (getinode(&disk, &dp, UFS_ROOTINO) != 0) {
661 warn("Failed to get root inode: %s", disk.d_error);
662 return (-1);
663 }
664 if (sblock.fs_magic == FS_UFS1_MAGIC) {
665 if ((off_t)dp.dp1->di_size >= lblktosize(&sblock, UFS_NDADDR)) {
666 warnx("UFS_ROOTINO extends beyond direct blocks.");
667 return (-1);
668 }
669 for (i = 0; i < UFS_NDADDR; i++) {
670 if (dp.dp1->di_db[i] == 0)
671 break;
672 if ((ino = dir_search(dp.dp1->di_db[i],
673 sblksize(&sblock, (off_t)dp.dp1->di_size, i))) != 0)
674 return (ino);
675 }
676 } else {
677 if ((off_t)dp.dp2->di_size >= lblktosize(&sblock, UFS_NDADDR)) {
678 warnx("UFS_ROOTINO extends beyond direct blocks.");
679 return (-1);
680 }
681 for (i = 0; i < UFS_NDADDR; i++) {
682 if (dp.dp2->di_db[i] == 0)
683 break;
684 if ((ino = dir_search(dp.dp2->di_db[i],
685 sblksize(&sblock, (off_t)dp.dp2->di_size, i))) != 0)
686 return (ino);
687 }
688 }
689
690 return (0);
691 }
692
693 static void
dir_clear_block(const char * block,off_t off)694 dir_clear_block(const char *block, off_t off)
695 {
696 struct direct *dp;
697
698 for (; off < sblock.fs_bsize; off += DIRBLKSIZ) {
699 dp = (struct direct *)&block[off];
700 dp->d_ino = 0;
701 dp->d_reclen = DIRBLKSIZ;
702 dp->d_type = DT_UNKNOWN;
703 }
704 }
705
706 /*
707 * Insert the journal at inode 'ino' into directory blk 'blk' at the first
708 * free offset of 'off'. DIRBLKSIZ blocks after off are initialized as
709 * empty.
710 */
711 static int
dir_insert(ufs2_daddr_t blk,off_t off,ino_t ino)712 dir_insert(ufs2_daddr_t blk, off_t off, ino_t ino)
713 {
714 struct direct *dp;
715 char block[MAXBSIZE];
716
717 if (bread(&disk, fsbtodb(&sblock, blk), block, sblock.fs_bsize) <= 0) {
718 warn("Failed to read dir block");
719 return (-1);
720 }
721 bzero(&block[off], sblock.fs_bsize - off);
722 dp = (struct direct *)&block[off];
723 dp->d_ino = ino;
724 dp->d_reclen = DIRBLKSIZ;
725 dp->d_type = DT_REG;
726 dp->d_namlen = strlen(SUJ_FILE);
727 bcopy(SUJ_FILE, &dp->d_name, strlen(SUJ_FILE));
728 dir_clear_block(block, off + DIRBLKSIZ);
729 if (bwrite(&disk, fsbtodb(&sblock, blk), block, sblock.fs_bsize) <= 0) {
730 warn("Failed to write dir block");
731 return (-1);
732 }
733 return (0);
734 }
735
736 /*
737 * Extend a directory block in 'blk' by copying it to a full size block
738 * and inserting the new journal inode into .sujournal.
739 */
740 static int
dir_extend(ufs2_daddr_t blk,ufs2_daddr_t nblk,off_t size,ino_t ino)741 dir_extend(ufs2_daddr_t blk, ufs2_daddr_t nblk, off_t size, ino_t ino)
742 {
743 char block[MAXBSIZE];
744
745 if (bread(&disk, fsbtodb(&sblock, blk), block,
746 roundup(size, sblock.fs_fsize)) <= 0) {
747 warn("Failed to read dir block");
748 return (-1);
749 }
750 dir_clear_block(block, size);
751 if (bwrite(&disk, fsbtodb(&sblock, nblk), block, sblock.fs_bsize)
752 <= 0) {
753 warn("Failed to write dir block");
754 return (-1);
755 }
756
757 return (dir_insert(nblk, size, ino));
758 }
759
760 /*
761 * Insert the journal file into the UFS_ROOTINO directory. We always extend the
762 * last frag
763 */
764 static int
journal_insertfile(ino_t ino)765 journal_insertfile(ino_t ino)
766 {
767 union dinodep dp;
768 ufs2_daddr_t nblk;
769 ufs2_daddr_t blk;
770 ufs_lbn_t lbn;
771 int size;
772 int off;
773
774 if (getinode(&disk, &dp, UFS_ROOTINO) != 0) {
775 warn("Failed to get root inode: %s", disk.d_error);
776 sbdirty();
777 return (-1);
778 }
779 blk = 0;
780 size = 0;
781 nblk = journal_balloc();
782 if (nblk <= 0)
783 return (-1);
784 /*
785 * For simplicity sake we aways extend the UFS_ROOTINO into a new
786 * directory block rather than searching for space and inserting
787 * into an existing block. However, if the rootino has frags
788 * have to free them and extend the block.
789 */
790 if (sblock.fs_magic == FS_UFS1_MAGIC) {
791 lbn = lblkno(&sblock, dp.dp1->di_size);
792 off = blkoff(&sblock, dp.dp1->di_size);
793 blk = dp.dp1->di_db[lbn];
794 size = sblksize(&sblock, (off_t)dp.dp1->di_size, lbn);
795 } else {
796 lbn = lblkno(&sblock, dp.dp2->di_size);
797 off = blkoff(&sblock, dp.dp2->di_size);
798 blk = dp.dp2->di_db[lbn];
799 size = sblksize(&sblock, (off_t)dp.dp2->di_size, lbn);
800 }
801 if (off != 0) {
802 if (dir_extend(blk, nblk, off, ino) == -1)
803 return (-1);
804 } else {
805 blk = 0;
806 if (dir_insert(nblk, 0, ino) == -1)
807 return (-1);
808 }
809 if (sblock.fs_magic == FS_UFS1_MAGIC) {
810 dp.dp1->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE;
811 dp.dp1->di_db[lbn] = nblk;
812 dp.dp1->di_size = lblktosize(&sblock, lbn+1);
813 } else {
814 dp.dp2->di_blocks += (sblock.fs_bsize - size) / DEV_BSIZE;
815 dp.dp2->di_db[lbn] = nblk;
816 dp.dp2->di_size = lblktosize(&sblock, lbn+1);
817 }
818 if (putinode(&disk) < 0) {
819 warn("Failed to write root inode: %s", disk.d_error);
820 return (-1);
821 }
822 if (cgwrite(&disk) < 0) {
823 warn("Failed to write updated cg");
824 sbdirty();
825 return (-1);
826 }
827 if (blk) {
828 if (cgbfree(&disk, blk, size) < 0) {
829 warn("Failed to write cg");
830 return (-1);
831 }
832 }
833
834 return (0);
835 }
836
837 static int
indir_fill(ufs2_daddr_t blk,int level,int * resid)838 indir_fill(ufs2_daddr_t blk, int level, int *resid)
839 {
840 char indirbuf[MAXBSIZE];
841 ufs1_daddr_t *bap1;
842 ufs2_daddr_t *bap2;
843 ufs2_daddr_t nblk;
844 int ncnt;
845 int cnt;
846 int i;
847
848 bzero(indirbuf, sizeof(indirbuf));
849 bap1 = (ufs1_daddr_t *)indirbuf;
850 bap2 = (void *)bap1;
851 cnt = 0;
852 for (i = 0; i < NINDIR(&sblock) && *resid != 0; i++) {
853 nblk = journal_balloc();
854 if (nblk <= 0)
855 return (-1);
856 cnt++;
857 if (sblock.fs_magic == FS_UFS1_MAGIC)
858 *bap1++ = nblk;
859 else
860 *bap2++ = nblk;
861 if (level != 0) {
862 ncnt = indir_fill(nblk, level - 1, resid);
863 if (ncnt <= 0)
864 return (-1);
865 cnt += ncnt;
866 } else
867 (*resid)--;
868 }
869 if (bwrite(&disk, fsbtodb(&sblock, blk), indirbuf,
870 sblock.fs_bsize) <= 0) {
871 warn("Failed to write indirect");
872 return (-1);
873 }
874 return (cnt);
875 }
876
877 /*
878 * Clear the flag bits so the journal can be removed.
879 */
880 static void
journal_clear(void)881 journal_clear(void)
882 {
883 union dinodep dp;
884 ino_t ino;
885
886 ino = journal_findfile();
887 if (ino == (ino_t)-1 || ino == 0) {
888 warnx("Journal file does not exist");
889 return;
890 }
891 printf("Clearing journal flags from inode %ju\n", (uintmax_t)ino);
892 if (getinode(&disk, &dp, ino) != 0) {
893 warn("Failed to get journal inode: %s", disk.d_error);
894 return;
895 }
896 if (sblock.fs_magic == FS_UFS1_MAGIC)
897 dp.dp1->di_flags = 0;
898 else
899 dp.dp2->di_flags = 0;
900 if (putinode(&disk) < 0) {
901 warn("Failed to write journal inode: %s", disk.d_error);
902 return;
903 }
904 }
905
906 static int
journal_alloc(int64_t size)907 journal_alloc(int64_t size)
908 {
909 union dinodep dp;
910 ufs2_daddr_t blk;
911 struct cg *cgp;
912 int resid;
913 ino_t ino;
914 int blks;
915 time_t utime;
916 int i;
917
918 cgp = &disk.d_cg;
919 ino = 0;
920
921 /*
922 * If the journal file exists we can't allocate it.
923 */
924 ino = journal_findfile();
925 if (ino == (ino_t)-1) {
926 warnx("journal_findfile() failed.");
927 return (-1);
928 }
929 if (ino > 0) {
930 warnx("Journal file %s already exists, please remove.",
931 SUJ_FILE);
932 return (-1);
933 }
934 /*
935 * If the user didn't supply a size pick one based on the filesystem
936 * size constrained with hardcoded MIN and MAX values. We opt for
937 * 1/1024th of the filesystem up to MAX but not exceeding one CG and
938 * not less than the MIN.
939 */
940 if (size == 0) {
941 size = (sblock.fs_size * sblock.fs_bsize) / 1024;
942 if (size / sblock.fs_fsize > sblock.fs_fpg)
943 size = sblock.fs_fpg * sblock.fs_fsize;
944 size = MAX(SUJ_MIN, size);
945 }
946 /* fsck does not support fragments in journal files. */
947 size = roundup(size, sblock.fs_bsize);
948 resid = blocks = size / sblock.fs_bsize;
949 if (sblock.fs_cstotal.cs_nbfree < blocks) {
950 warn("Insufficient free space for %jd byte journal", size);
951 return (-1);
952 }
953 /*
954 * Find a cg with enough blocks to satisfy the journal
955 * size. Presently the journal does not span cgs.
956 */
957 while (cgread(&disk) == 1) {
958 if (cgp->cg_cs.cs_nifree == 0)
959 continue;
960 ino = cgialloc(&disk);
961 if (ino <= 0)
962 break;
963 printf("Using inode %ju in cg %d for %jd byte journal\n",
964 (uintmax_t)ino, cgp->cg_cgx, size);
965 if (getinode(&disk, &dp, ino) != 0) {
966 warn("Failed to get allocated inode: %s", disk.d_error);
967 sbdirty();
968 goto out;
969 }
970 /*
971 * We leave fields unrelated to the number of allocated
972 * blocks and size uninitialized. This causes legacy
973 * fsck implementations to clear the inode.
974 */
975 time(&utime);
976 if (sblock.fs_magic == FS_UFS1_MAGIC) {
977 bzero(dp.dp1, sizeof(*dp.dp1));
978 dp.dp1->di_size = size;
979 dp.dp1->di_mode = IFREG | IREAD;
980 dp.dp1->di_nlink = 1;
981 dp.dp1->di_flags =
982 SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP;
983 dp.dp1->di_atime = utime;
984 dp.dp1->di_mtime = utime;
985 dp.dp1->di_ctime = utime;
986 } else {
987 bzero(dp.dp2, sizeof(*dp.dp2));
988 dp.dp2->di_size = size;
989 dp.dp2->di_mode = IFREG | IREAD;
990 dp.dp2->di_nlink = 1;
991 dp.dp2->di_flags =
992 SF_IMMUTABLE | SF_NOUNLINK | UF_NODUMP;
993 dp.dp2->di_atime = utime;
994 dp.dp2->di_mtime = utime;
995 dp.dp2->di_ctime = utime;
996 dp.dp2->di_birthtime = utime;
997 }
998 for (i = 0; i < UFS_NDADDR && resid; i++, resid--) {
999 blk = journal_balloc();
1000 if (blk <= 0)
1001 goto out;
1002 if (sblock.fs_magic == FS_UFS1_MAGIC) {
1003 dp.dp1->di_db[i] = blk;
1004 dp.dp1->di_blocks++;
1005 } else {
1006 dp.dp2->di_db[i] = blk;
1007 dp.dp2->di_blocks++;
1008 }
1009 }
1010 for (i = 0; i < UFS_NIADDR && resid; i++) {
1011 blk = journal_balloc();
1012 if (blk <= 0)
1013 goto out;
1014 blks = indir_fill(blk, i, &resid) + 1;
1015 if (blks <= 0) {
1016 sbdirty();
1017 goto out;
1018 }
1019 if (sblock.fs_magic == FS_UFS1_MAGIC) {
1020 dp.dp1->di_ib[i] = blk;
1021 dp.dp1->di_blocks += blks;
1022 } else {
1023 dp.dp2->di_ib[i] = blk;
1024 dp.dp2->di_blocks += blks;
1025 }
1026 }
1027 if (sblock.fs_magic == FS_UFS1_MAGIC)
1028 dp.dp1->di_blocks *= sblock.fs_bsize / disk.d_bsize;
1029 else
1030 dp.dp2->di_blocks *= sblock.fs_bsize / disk.d_bsize;
1031 if (putinode(&disk) < 0) {
1032 warn("Failed to write allocated inode: %s",
1033 disk.d_error);
1034 sbdirty();
1035 return (-1);
1036 }
1037 if (cgwrite(&disk) < 0) {
1038 warn("Failed to write updated cg");
1039 sbdirty();
1040 return (-1);
1041 }
1042 if (journal_insertfile(ino) < 0) {
1043 sbdirty();
1044 return (-1);
1045 }
1046 sblock.fs_sujfree = 0;
1047 return (0);
1048 }
1049 warnx("Insufficient free space for the journal.");
1050 out:
1051 return (-1);
1052 }
1053
1054 static void
usage(void)1055 usage(void)
1056 {
1057 fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n",
1058 "usage: tunefs [-A] [-a enable | disable] [-e maxbpg] [-f avgfilesize]",
1059 " [-J enable | disable] [-j enable | disable] [-k metaspace]",
1060 " [-L volname] [-l enable | disable] [-m minfree]",
1061 " [-N enable | disable] [-n enable | disable]",
1062 " [-o space | time] [-p] [-s avgfpdir] [-t enable | disable]",
1063 " special | filesystem");
1064 exit(2);
1065 }
1066
1067 static void
printfs(void)1068 printfs(void)
1069 {
1070 warnx("POSIX.1e ACLs: (-a) %s",
1071 (sblock.fs_flags & FS_ACLS)? "enabled" : "disabled");
1072 warnx("NFSv4 ACLs: (-N) %s",
1073 (sblock.fs_flags & FS_NFS4ACLS)? "enabled" : "disabled");
1074 warnx("MAC multilabel: (-l) %s",
1075 (sblock.fs_flags & FS_MULTILABEL)? "enabled" : "disabled");
1076 warnx("soft updates: (-n) %s",
1077 (sblock.fs_flags & FS_DOSOFTDEP)? "enabled" : "disabled");
1078 warnx("soft update journaling: (-j) %s",
1079 (sblock.fs_flags & FS_SUJ)? "enabled" : "disabled");
1080 warnx("gjournal: (-J) %s",
1081 (sblock.fs_flags & FS_GJOURNAL)? "enabled" : "disabled");
1082 warnx("trim: (-t) %s",
1083 (sblock.fs_flags & FS_TRIM)? "enabled" : "disabled");
1084 warnx("maximum blocks per file in a cylinder group: (-e) %d",
1085 sblock.fs_maxbpg);
1086 warnx("average file size: (-f) %d",
1087 sblock.fs_avgfilesize);
1088 warnx("average number of files in a directory: (-s) %d",
1089 sblock.fs_avgfpdir);
1090 warnx("minimum percentage of free space: (-m) %d%%",
1091 sblock.fs_minfree);
1092 warnx("space to hold for metadata blocks: (-k) %jd",
1093 sblock.fs_metaspace);
1094 warnx("optimization preference: (-o) %s",
1095 sblock.fs_optim == FS_OPTSPACE ? "space" : "time");
1096 if (sblock.fs_minfree >= MINFREE &&
1097 sblock.fs_optim == FS_OPTSPACE)
1098 warnx(OPTWARN, "time", ">=", MINFREE);
1099 if (sblock.fs_minfree < MINFREE &&
1100 sblock.fs_optim == FS_OPTTIME)
1101 warnx(OPTWARN, "space", "<", MINFREE);
1102 warnx("volume label: (-L) %s",
1103 sblock.fs_volname);
1104 }
1105