2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1980, 1986, 1993
5 * The Regents of the University of California. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
34 static const char sccsid[] = "@(#)utilities.c 8.6 (Berkeley) 5/19/95";
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
40 #include <sys/param.h>
42 #include <sys/types.h>
43 #include <sys/sysctl.h>
45 #include <sys/disklabel.h>
46 #include <sys/ioctl.h>
49 #include <ufs/ufs/dinode.h>
50 #include <ufs/ufs/dir.h>
51 #include <ufs/ffs/fs.h>
67 static void slowio_start(void);
68 static void slowio_end(void);
69 static void printIOstats(void);
71 static long diskreads, totaldiskreads, totalreads; /* Disk cache statistics */
72 static struct timespec startpass, finishpass;
73 struct timeval slowio_starttime;
74 int slowio_delay_usec = 10000; /* Initial IO delay for background fsck */
76 static struct bufarea cgblk; /* backup buffer for cylinder group blocks */
77 static TAILQ_HEAD(buflist, bufarea) bufhead; /* head of buffer cache list */
78 static int numbufs; /* size of buffer cache */
79 static char *buftype[BT_NUMBUFTYPES] = BT_NAMES;
80 static struct bufarea *cgbufs; /* header for cylinder group cache */
81 static int flushtries; /* number of tries to reclaim memory */
86 diskreads = totaldiskreads = totalreads = 0;
87 bzero(&startpass, sizeof(struct timespec));
88 bzero(&finishpass, sizeof(struct timespec));
89 bzero(&slowio_starttime, sizeof(struct timeval));
90 slowio_delay_usec = 10000;
92 bzero(&cgblk, sizeof(struct bufarea));
101 ftypeok(union dinode *dp)
103 switch (DIP(dp, di_mode) & IFMT) {
116 printf("bad file type 0%o\n", DIP(dp, di_mode));
122 reply(const char *question)
128 pfatal("INTERNAL ERROR: GOT TO reply()");
129 persevere = !strcmp(question, "CONTINUE");
131 if (!persevere && (nflag || (fswritefd < 0 && bkgrdflag == 0))) {
132 printf("%s? no\n\n", question);
136 if (yflag || (persevere && nflag)) {
137 printf("%s? yes\n\n", question);
141 printf("%s? [yn] ", question);
142 (void) fflush(stdout);
144 while (c != '\n' && getc(stdin) != '\n') {
150 } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N');
152 if (c == 'y' || c == 'Y')
159 * Look up state information for an inode.
164 static struct inostat unallocated = { USTATE, 0, 0 };
165 struct inostatlist *ilp;
169 errx(EEXIT, "inoinfo: inumber %ju out of range",
171 ilp = &inostathead[inum / sblock.fs_ipg];
172 iloff = inum % sblock.fs_ipg;
173 if (iloff >= ilp->il_numalloced)
174 return (&unallocated);
175 return (&ilp->il_stat[iloff]);
179 * Malloc buffers and set up cache.
188 pbp = pdirbp = (struct bufarea *)0;
189 bufp = Malloc((unsigned int)sblock.fs_bsize);
191 errx(EEXIT, "cannot allocate buffer pool");
192 cgblk.b_un.b_buf = bufp;
193 initbarea(&cgblk, BT_CYLGRP);
194 TAILQ_INIT(&bufhead);
196 if (bufcnt < MINBUFS)
198 for (i = 0; i < bufcnt; i++) {
199 bp = (struct bufarea *)Malloc(sizeof(struct bufarea));
200 bufp = Malloc((unsigned int)sblock.fs_bsize);
201 if (bp == NULL || bufp == NULL) {
204 errx(EEXIT, "cannot allocate buffer pool");
206 bp->b_un.b_buf = bufp;
207 TAILQ_INSERT_HEAD(&bufhead, bp, b_list);
208 initbarea(bp, BT_UNKNOWN);
210 numbufs = i; /* save number of buffers */
211 for (i = 0; i < BT_NUMBUFTYPES; i++) {
212 readtime[i].tv_sec = totalreadtime[i].tv_sec = 0;
213 readtime[i].tv_nsec = totalreadtime[i].tv_nsec = 0;
214 readcnt[i] = totalreadcnt[i] = 0;
219 * Manage cylinder group buffers.
221 * Use getblk() here rather than cgget() because the cylinder group
222 * may be corrupted but we want it anyway so we can fix it.
224 static struct bufarea *cgbufs; /* header for cylinder group cache */
225 static int flushtries; /* number of tries to reclaim memory */
230 struct bufarea *cgbp;
233 if (cgbufs == NULL) {
234 cgbufs = calloc(sblock.fs_ncg, sizeof(struct bufarea));
236 errx(EEXIT, "cannot allocate cylinder group buffers");
239 if (cgbp->b_un.b_cg != NULL)
243 cgp = malloc((unsigned int)sblock.fs_cgsize);
245 getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize);
248 cgbp->b_un.b_cg = cgp;
249 initbarea(cgbp, BT_CYLGRP);
250 getblk(cgbp, cgtod(&sblock, cg), sblock.fs_cgsize);
255 * Mark a cylinder group buffer as dirty.
256 * Update its check-hash if they are enabled.
259 cgdirty(struct bufarea *cgbp)
263 cg = cgbp->b_un.b_cg;
264 if ((sblock.fs_metackhash & CK_CYLGRP) != 0) {
267 calculate_crc32c(~0L, (void *)cg, sblock.fs_cgsize);
273 * Attempt to flush a cylinder group cache entry.
274 * Return whether the flush was successful.
279 struct bufarea *cgbp;
281 if (flushtries == sblock.fs_ncg || cgbufs == NULL)
283 cgbp = &cgbufs[flushtries++];
284 if (cgbp->b_un.b_cg == NULL)
286 flush(fswritefd, cgbp);
287 free(cgbp->b_un.b_buf);
288 cgbp->b_un.b_buf = NULL;
293 * Manage a cache of directory blocks.
296 getdatablk(ufs2_daddr_t blkno, long size, int type)
300 TAILQ_FOREACH(bp, &bufhead, b_list)
301 if (bp->b_bno == fsbtodb(&sblock, blkno))
303 TAILQ_FOREACH_REVERSE(bp, &bufhead, buflist, b_list)
304 if ((bp->b_flags & B_INUSE) == 0)
307 errx(EEXIT, "deadlocked buffer pool");
309 getblk(bp, blkno, size);
312 if (debug && bp->b_type != type)
313 printf("Buffer type changed from %s to %s\n",
314 buftype[bp->b_type], buftype[type]);
315 TAILQ_REMOVE(&bufhead, bp, b_list);
316 TAILQ_INSERT_HEAD(&bufhead, bp, b_list);
317 bp->b_flags |= B_INUSE;
322 getblk(struct bufarea *bp, ufs2_daddr_t blk, long size)
325 struct timespec start, finish;
327 dblk = fsbtodb(&sblock, blk);
328 if (bp->b_bno == dblk) {
331 flush(fswritefd, bp);
333 readcnt[bp->b_type]++;
334 clock_gettime(CLOCK_REALTIME_PRECISE, &start);
336 bp->b_errs = blread(fsreadfd, bp->b_un.b_buf, dblk, size);
338 clock_gettime(CLOCK_REALTIME_PRECISE, &finish);
339 timespecsub(&finish, &start, &finish);
340 timespecadd(&readtime[bp->b_type], &finish,
341 &readtime[bp->b_type]);
349 flush(int fd, struct bufarea *bp)
356 pfatal("WRITING IN READ_ONLY MODE.\n");
360 pfatal("WRITING %sZERO'ED BLOCK %lld TO DISK\n",
361 (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ",
362 (long long)bp->b_bno);
365 * Write using the appropriate function.
367 switch (bp->b_type) {
370 pfatal("BUFFER %p DOES NOT MATCH SBLK %p\n",
372 if (sbput(fd, bp->b_un.b_fs, 0) == 0)
376 if (cgput(fswritefd, &sblock, bp->b_un.b_cg) == 0)
380 blwrite(fd, bp->b_un.b_buf, bp->b_bno, bp->b_size);
386 rwerror(const char *mesg, ufs2_daddr_t blk)
393 pfatal("CANNOT %s: %ld", mesg, (long)blk);
394 if (reply("CONTINUE") == 0)
399 ckfini(int markclean)
401 struct bufarea *bp, *nbp;
402 int ofsmodified, cnt;
406 if ((!(sblock.fs_flags & FS_UNCLEAN)) != markclean) {
407 cmd.value = FS_UNCLEAN;
408 cmd.size = markclean ? -1 : 1;
409 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
410 &cmd, sizeof cmd) == -1)
411 rwerror("SET FILE SYSTEM FLAGS", FS_UNCLEAN);
413 printf("\n***** FILE SYSTEM MARKED %s *****\n",
414 markclean ? "CLEAN" : "DIRTY");
418 } else if (!preen && !markclean) {
419 printf("\n***** FILE SYSTEM STILL DIRTY *****\n");
423 if (debug && totalreads > 0)
424 printf("cache with %d buffers missed %ld of %ld (%d%%)\n",
425 numbufs, totaldiskreads, totalreads,
426 (int)(totaldiskreads * 100 / totalreads));
428 (void)close(fsreadfd);
431 flush(fswritefd, &sblk);
432 if (havesb && cursnapshot == 0 && sblock.fs_magic == FS_UFS2_MAGIC &&
433 sblk.b_bno != sblock.fs_sblockloc / dev_bsize &&
434 !preen && reply("UPDATE STANDARD SUPERBLOCK")) {
435 /* Change the write destination to standard superblock */
436 sblock.fs_sblockactualloc = sblock.fs_sblockloc;
437 sblk.b_bno = sblock.fs_sblockloc / dev_bsize;
439 flush(fswritefd, &sblk);
441 flush(fswritefd, &cgblk);
442 free(cgblk.b_un.b_buf);
444 TAILQ_FOREACH_REVERSE_SAFE(bp, &bufhead, buflist, b_list, nbp) {
445 TAILQ_REMOVE(&bufhead, bp, b_list);
447 flush(fswritefd, bp);
448 free(bp->b_un.b_buf);
452 errx(EEXIT, "panic: lost %d buffers", numbufs - cnt);
453 if (cgbufs != NULL) {
454 for (cnt = 0; cnt < sblock.fs_ncg; cnt++) {
455 if (cgbufs[cnt].b_un.b_cg == NULL)
457 flush(fswritefd, &cgbufs[cnt]);
458 free(cgbufs[cnt].b_un.b_cg);
462 pbp = pdirbp = (struct bufarea *)0;
463 if (cursnapshot == 0 && sblock.fs_clean != markclean) {
464 if ((sblock.fs_clean = markclean) != 0) {
465 sblock.fs_flags &= ~(FS_UNCLEAN | FS_NEEDSFSCK);
466 sblock.fs_pendingblocks = 0;
467 sblock.fs_pendinginodes = 0;
470 ofsmodified = fsmodified;
471 flush(fswritefd, &sblk);
472 fsmodified = ofsmodified;
474 printf("\n***** FILE SYSTEM MARKED %s *****\n",
475 markclean ? "CLEAN" : "DIRTY");
481 printf("\n***** FILE SYSTEM IS CLEAN *****\n");
483 printf("\n***** FILE SYSTEM STILL DIRTY *****\n");
487 (void)close(fsreadfd);
488 (void)close(fswritefd);
492 * Print out I/O statistics.
501 if (diskreads == 0) {
502 printf("%s: no I/O\n\n", what);
505 if (startpass.tv_sec == 0)
506 startpass = startprog;
507 printf("%s: I/O statistics\n", what);
509 totaldiskreads += diskreads;
511 for (i = 0; i < BT_NUMBUFTYPES; i++) {
512 timespecadd(&totalreadtime[i], &readtime[i], &totalreadtime[i]);
513 totalreadcnt[i] += readcnt[i];
514 readtime[i].tv_sec = readtime[i].tv_nsec = 0;
517 clock_gettime(CLOCK_REALTIME_PRECISE, &startpass);
527 printf("Final I/O statistics\n");
528 totaldiskreads += diskreads;
529 diskreads = totaldiskreads;
530 startpass = startprog;
531 for (i = 0; i < BT_NUMBUFTYPES; i++) {
532 timespecadd(&totalreadtime[i], &readtime[i], &totalreadtime[i]);
533 totalreadcnt[i] += readcnt[i];
534 readtime[i] = totalreadtime[i];
535 readcnt[i] = totalreadcnt[i];
540 static void printIOstats(void)
542 long long msec, totalmsec;
545 clock_gettime(CLOCK_REALTIME_PRECISE, &finishpass);
546 timespecsub(&finishpass, &startpass, &finishpass);
547 printf("Running time: %jd.%03ld sec\n",
548 (intmax_t)finishpass.tv_sec, finishpass.tv_nsec / 1000000);
549 printf("buffer reads by type:\n");
550 for (totalmsec = 0, i = 0; i < BT_NUMBUFTYPES; i++)
551 totalmsec += readtime[i].tv_sec * 1000 +
552 readtime[i].tv_nsec / 1000000;
555 for (i = 0; i < BT_NUMBUFTYPES; i++) {
559 readtime[i].tv_sec * 1000 + readtime[i].tv_nsec / 1000000;
560 printf("%21s:%8ld %2ld.%ld%% %4jd.%03ld sec %2lld.%lld%%\n",
561 buftype[i], readcnt[i], readcnt[i] * 100 / diskreads,
562 (readcnt[i] * 1000 / diskreads) % 10,
563 (intmax_t)readtime[i].tv_sec, readtime[i].tv_nsec / 1000000,
564 msec * 100 / totalmsec, (msec * 1000 / totalmsec) % 10);
570 blread(int fd, char *buf, ufs2_daddr_t blk, long size)
582 if (pread(fd, buf, (int)size, offset) == size) {
589 * This is handled specially here instead of in rwerror because
590 * rwerror is used for all sorts of errors, not just true read/write
591 * errors. It should be refactored and fixed.
594 pfatal("CANNOT READ_BLK: %ld", (long)blk);
595 errx(EEXIT, "ABORTING DUE TO READ ERRORS");
597 rwerror("READ BLK", blk);
600 memset(buf, 0, (size_t)size);
601 printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:");
602 for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) {
603 if (pread(fd, cp, (int)secsize, offset + i) != secsize) {
604 if (secsize != dev_bsize && dev_bsize != 1)
605 printf(" %jd (%jd),",
606 (intmax_t)(blk * dev_bsize + i) / secsize,
607 (intmax_t)blk + i / dev_bsize);
609 printf(" %jd,", (intmax_t)blk + i / dev_bsize);
620 blwrite(int fd, char *buf, ufs2_daddr_t blk, ssize_t size)
630 if (pwrite(fd, buf, size, offset) == size) {
635 rwerror("WRITE BLK", blk);
636 printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:");
637 for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize)
638 if (pwrite(fd, cp, dev_bsize, offset + i) != dev_bsize)
639 printf(" %jd,", (intmax_t)blk + i / dev_bsize);
645 blerase(int fd, ufs2_daddr_t blk, long size)
651 ioarg[0] = blk * dev_bsize;
653 ioctl(fd, DIOCGDELETE, ioarg);
654 /* we don't really care if we succeed or not */
659 * Fill a contiguous region with all-zeroes. Note ZEROBUFSIZE is by
660 * definition a multiple of dev_bsize.
663 blzero(int fd, ufs2_daddr_t blk, long size)
671 zero = calloc(ZEROBUFSIZE, 1);
673 errx(EEXIT, "cannot allocate buffer pool");
675 offset = blk * dev_bsize;
676 if (lseek(fd, offset, 0) < 0)
677 rwerror("SEEK BLK", blk);
679 len = MIN(ZEROBUFSIZE, size);
680 if (write(fd, zero, len) != len)
681 rwerror("WRITE BLK", blk);
682 blk += len / dev_bsize;
688 * Verify cylinder group's magic number and other parameters. If the
689 * test fails, offer an option to rebuild the whole cylinder group.
692 check_cgmagic(int cg, struct bufarea *cgbp)
694 struct cg *cgp = cgbp->b_un.b_cg;
697 * Extended cylinder group checks.
699 if (cg_chkmagic(cgp) &&
700 ((sblock.fs_magic == FS_UFS1_MAGIC &&
701 cgp->cg_old_niblk == sblock.fs_ipg &&
702 cgp->cg_ndblk <= sblock.fs_fpg &&
703 cgp->cg_old_ncyl <= sblock.fs_old_cpg) ||
704 (sblock.fs_magic == FS_UFS2_MAGIC &&
705 cgp->cg_niblk == sblock.fs_ipg &&
706 cgp->cg_ndblk <= sblock.fs_fpg &&
707 cgp->cg_initediblk <= sblock.fs_ipg))) {
710 pfatal("CYLINDER GROUP %d: BAD MAGIC NUMBER", cg);
711 if (!reply("REBUILD CYLINDER GROUP")) {
712 printf("YOU WILL NEED TO RERUN FSCK.\n");
717 * Zero out the cylinder group and then initialize critical fields.
718 * Bit maps and summaries will be recalculated by later passes.
720 memset(cgp, 0, (size_t)sblock.fs_cgsize);
721 cgp->cg_magic = CG_MAGIC;
723 cgp->cg_niblk = sblock.fs_ipg;
724 cgp->cg_initediblk = MIN(sblock.fs_ipg, 2 * INOPB(&sblock));
725 if (cgbase(&sblock, cg) + sblock.fs_fpg < sblock.fs_size)
726 cgp->cg_ndblk = sblock.fs_fpg;
728 cgp->cg_ndblk = sblock.fs_size - cgbase(&sblock, cg);
729 cgp->cg_iusedoff = &cgp->cg_space[0] - (u_char *)(&cgp->cg_firstfield);
730 if (sblock.fs_magic == FS_UFS1_MAGIC) {
732 cgp->cg_initediblk = 0;
733 cgp->cg_old_ncyl = sblock.fs_old_cpg;
734 cgp->cg_old_niblk = sblock.fs_ipg;
735 cgp->cg_old_btotoff = cgp->cg_iusedoff;
736 cgp->cg_old_boff = cgp->cg_old_btotoff +
737 sblock.fs_old_cpg * sizeof(int32_t);
738 cgp->cg_iusedoff = cgp->cg_old_boff +
739 sblock.fs_old_cpg * sizeof(u_int16_t);
741 cgp->cg_freeoff = cgp->cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT);
742 cgp->cg_nextfreeoff = cgp->cg_freeoff + howmany(sblock.fs_fpg,CHAR_BIT);
743 if (sblock.fs_contigsumsize > 0) {
744 cgp->cg_nclusterblks = cgp->cg_ndblk / sblock.fs_frag;
745 cgp->cg_clustersumoff =
746 roundup(cgp->cg_nextfreeoff, sizeof(u_int32_t));
747 cgp->cg_clustersumoff -= sizeof(u_int32_t);
748 cgp->cg_clusteroff = cgp->cg_clustersumoff +
749 (sblock.fs_contigsumsize + 1) * sizeof(u_int32_t);
750 cgp->cg_nextfreeoff = cgp->cg_clusteroff +
751 howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT);
758 * allocate a data block with the specified number of fragments
763 int i, j, k, cg, baseblk;
764 struct bufarea *cgbp;
767 if (frags <= 0 || frags > sblock.fs_frag)
769 for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) {
770 for (j = 0; j <= sblock.fs_frag - frags; j++) {
773 for (k = 1; k < frags; k++)
774 if (testbmap(i + j + k))
780 cg = dtog(&sblock, i + j);
782 cgp = cgbp->b_un.b_cg;
783 if (!check_cgmagic(cg, cgbp))
785 baseblk = dtogd(&sblock, i + j);
786 for (k = 0; k < frags; k++) {
788 clrbit(cg_blksfree(cgp), baseblk + k);
791 if (frags == sblock.fs_frag)
792 cgp->cg_cs.cs_nbfree--;
794 cgp->cg_cs.cs_nffree -= frags;
803 * Free a previously allocated block
806 freeblk(ufs2_daddr_t blkno, long frags)
808 struct inodesc idesc;
810 idesc.id_blkno = blkno;
811 idesc.id_numfrags = frags;
812 (void)pass4check(&idesc);
815 /* Slow down IO so as to leave some disk bandwidth for other processes */
820 /* Delay one in every 8 operations */
821 slowio_pollcnt = (slowio_pollcnt + 1) & 7;
822 if (slowio_pollcnt == 0) {
823 gettimeofday(&slowio_starttime, NULL);
833 if (slowio_pollcnt != 0)
836 /* Update the slowdown interval. */
837 gettimeofday(&tv, NULL);
838 delay_usec = (tv.tv_sec - slowio_starttime.tv_sec) * 1000000 +
839 (tv.tv_usec - slowio_starttime.tv_usec);
842 if (delay_usec > 2500000)
843 delay_usec = 2500000;
844 slowio_delay_usec = (slowio_delay_usec * 63 + delay_usec) >> 6;
845 /* delay by 8 times the average IO delay */
846 if (slowio_delay_usec > 64)
847 usleep(slowio_delay_usec * 8);
854 getpathname(char *namebuf, ino_t curdir, ino_t ino)
858 struct inodesc idesc;
861 if (curdir == ino && ino == UFS_ROOTINO) {
862 (void)strcpy(namebuf, "/");
865 if (busy || !INO_IS_DVALID(curdir)) {
866 (void)strcpy(namebuf, "?");
870 memset(&idesc, 0, sizeof(struct inodesc));
871 idesc.id_type = DATA;
872 idesc.id_fix = IGNORE;
873 cp = &namebuf[MAXPATHLEN - 1];
876 idesc.id_parent = curdir;
879 while (ino != UFS_ROOTINO) {
880 idesc.id_number = ino;
881 idesc.id_func = findino;
882 idesc.id_name = strdup("..");
883 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0)
886 idesc.id_number = idesc.id_parent;
887 idesc.id_parent = ino;
888 idesc.id_func = findname;
889 idesc.id_name = namebuf;
890 if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0)
892 len = strlen(namebuf);
894 memmove(cp, namebuf, (size_t)len);
896 if (cp < &namebuf[UFS_MAXNAMLEN])
898 ino = idesc.id_number;
901 if (ino != UFS_ROOTINO)
903 memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp));
907 catch(int sig __unused)
915 * When preening, allow a single quit to signal
916 * a special exit after file system checks complete
917 * so that reboot sequence may be interrupted.
920 catchquit(int sig __unused)
922 printf("returning to single-user after file system check\n");
924 (void)signal(SIGQUIT, SIG_DFL);
928 * determine whether an inode should be fixed.
931 dofix(struct inodesc *idesc, const char *msg)
934 switch (idesc->id_fix) {
937 if (idesc->id_type == DATA)
938 direrror(idesc->id_number, msg);
942 printf(" (SALVAGED)\n");
946 if (reply("SALVAGE") == 0) {
947 idesc->id_fix = NOFIX;
961 errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix);
970 * An unexpected inconsistency occurred.
971 * Die if preening or file system is running with soft dependency protocol,
972 * otherwise just print message and continue.
975 pfatal(const char *fmt, ...)
980 (void)vfprintf(stdout, fmt, ap);
983 (void)fprintf(stdout,
984 "\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n");
986 * Force foreground fsck to clean up inconsistency.
989 cmd.value = FS_NEEDSFSCK;
991 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
992 &cmd, sizeof cmd) == -1)
993 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
994 fprintf(stdout, "CANNOT RUN IN BACKGROUND\n");
1000 if (cdevname == NULL)
1001 cdevname = strdup("fsck");
1002 (void)fprintf(stdout, "%s: ", cdevname);
1003 (void)vfprintf(stdout, fmt, ap);
1004 (void)fprintf(stdout,
1005 "\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n",
1006 cdevname, usedsoftdep ? " SOFT UPDATE " : " ");
1008 * Force foreground fsck to clean up inconsistency.
1011 cmd.value = FS_NEEDSFSCK;
1013 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
1014 &cmd, sizeof cmd) == -1)
1015 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
1022 * Pwarn just prints a message when not preening or running soft dependency
1023 * protocol, or a warning (preceded by filename) when preening.
1026 pwarn(const char *fmt, ...)
1031 (void)fprintf(stdout, "%s: ", cdevname);
1032 (void)vfprintf(stdout, fmt, ap);
1037 * Stub for routines from kernel.
1040 panic(const char *fmt, ...)
1044 pfatal("INTERNAL INCONSISTENCY:");
1045 (void)vfprintf(stdout, fmt, ap);