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 static struct bufarea *cgbufs; /* header for cylinder group cache */
222 static int flushtries; /* number of tries to reclaim memory */
227 struct bufarea *cgbp;
230 if (cgbufs == NULL) {
231 cgbufs = calloc(sblock.fs_ncg, sizeof(struct bufarea));
233 errx(EEXIT, "cannot allocate cylinder group buffers");
236 if (cgbp->b_un.b_cg != NULL)
240 cgp = malloc((unsigned int)sblock.fs_cgsize);
242 getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize);
245 cgbp->b_un.b_cg = cgp;
246 initbarea(cgbp, BT_CYLGRP);
247 getblk(cgbp, cgtod(&sblock, cg), sblock.fs_cgsize);
252 * Attempt to flush a cylinder group cache entry.
253 * Return whether the flush was successful.
258 struct bufarea *cgbp;
260 if (flushtries == sblock.fs_ncg || cgbufs == NULL)
262 cgbp = &cgbufs[flushtries++];
263 if (cgbp->b_un.b_cg == NULL)
265 flush(fswritefd, cgbp);
266 free(cgbp->b_un.b_buf);
267 cgbp->b_un.b_buf = NULL;
272 * Manage a cache of directory blocks.
275 getdatablk(ufs2_daddr_t blkno, long size, int type)
279 TAILQ_FOREACH(bp, &bufhead, b_list)
280 if (bp->b_bno == fsbtodb(&sblock, blkno))
282 TAILQ_FOREACH_REVERSE(bp, &bufhead, buflist, b_list)
283 if ((bp->b_flags & B_INUSE) == 0)
286 errx(EEXIT, "deadlocked buffer pool");
288 getblk(bp, blkno, size);
291 if (debug && bp->b_type != type)
292 printf("Buffer type changed from %s to %s\n",
293 buftype[bp->b_type], buftype[type]);
294 TAILQ_REMOVE(&bufhead, bp, b_list);
295 TAILQ_INSERT_HEAD(&bufhead, bp, b_list);
296 bp->b_flags |= B_INUSE;
301 * Timespec operations (from <sys/time.h>).
303 #define timespecsub(vvp, uvp) \
305 (vvp)->tv_sec -= (uvp)->tv_sec; \
306 (vvp)->tv_nsec -= (uvp)->tv_nsec; \
307 if ((vvp)->tv_nsec < 0) { \
309 (vvp)->tv_nsec += 1000000000; \
312 #define timespecadd(vvp, uvp) \
314 (vvp)->tv_sec += (uvp)->tv_sec; \
315 (vvp)->tv_nsec += (uvp)->tv_nsec; \
316 if ((vvp)->tv_nsec >= 1000000000) { \
318 (vvp)->tv_nsec -= 1000000000; \
323 getblk(struct bufarea *bp, ufs2_daddr_t blk, long size)
326 struct timespec start, finish;
328 dblk = fsbtodb(&sblock, blk);
329 if (bp->b_bno == dblk) {
332 flush(fswritefd, bp);
334 readcnt[bp->b_type]++;
335 clock_gettime(CLOCK_REALTIME_PRECISE, &start);
337 bp->b_errs = blread(fsreadfd, bp->b_un.b_buf, dblk, size);
339 clock_gettime(CLOCK_REALTIME_PRECISE, &finish);
340 timespecsub(&finish, &start);
341 timespecadd(&readtime[bp->b_type], &finish);
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, (struct fs *)bp->b_un.b_buf, 0) == 0)
376 if (cgput(&disk, (struct cg *)bp->b_un.b_buf) == 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]);
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]);
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);
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 (lseek(fd, offset, 0) < 0)
583 rwerror("SEEK BLK", blk);
584 else if (read(fd, buf, (int)size) == size) {
591 * This is handled specially here instead of in rwerror because
592 * rwerror is used for all sorts of errors, not just true read/write
593 * errors. It should be refactored and fixed.
596 pfatal("CANNOT READ_BLK: %ld", (long)blk);
597 errx(EEXIT, "ABORTING DUE TO READ ERRORS");
599 rwerror("READ BLK", blk);
601 if (lseek(fd, offset, 0) < 0)
602 rwerror("SEEK BLK", blk);
604 memset(buf, 0, (size_t)size);
605 printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:");
606 for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) {
607 if (read(fd, cp, (int)secsize) != secsize) {
608 (void)lseek(fd, offset + i + secsize, 0);
609 if (secsize != dev_bsize && dev_bsize != 1)
610 printf(" %jd (%jd),",
611 (intmax_t)(blk * dev_bsize + i) / secsize,
612 (intmax_t)blk + i / dev_bsize);
614 printf(" %jd,", (intmax_t)blk + i / dev_bsize);
625 blwrite(int fd, char *buf, ufs2_daddr_t blk, ssize_t size)
635 if (lseek(fd, offset, 0) < 0)
636 rwerror("SEEK BLK", blk);
637 else if (write(fd, buf, size) == size) {
642 rwerror("WRITE BLK", blk);
643 if (lseek(fd, offset, 0) < 0)
644 rwerror("SEEK BLK", blk);
645 printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:");
646 for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize)
647 if (write(fd, cp, dev_bsize) != dev_bsize) {
648 (void)lseek(fd, offset + i + dev_bsize, 0);
649 printf(" %jd,", (intmax_t)blk + i / dev_bsize);
656 blerase(int fd, ufs2_daddr_t blk, long size)
662 ioarg[0] = blk * dev_bsize;
664 ioctl(fd, DIOCGDELETE, ioarg);
665 /* we don't really care if we succeed or not */
670 * Fill a contiguous region with all-zeroes. Note ZEROBUFSIZE is by
671 * definition a multiple of dev_bsize.
674 blzero(int fd, ufs2_daddr_t blk, long size)
682 zero = calloc(ZEROBUFSIZE, 1);
684 errx(EEXIT, "cannot allocate buffer pool");
686 offset = blk * dev_bsize;
687 if (lseek(fd, offset, 0) < 0)
688 rwerror("SEEK BLK", blk);
690 len = MIN(ZEROBUFSIZE, size);
691 if (write(fd, zero, len) != len)
692 rwerror("WRITE BLK", blk);
693 blk += len / dev_bsize;
699 * Verify cylinder group's magic number and other parameters. If the
700 * test fails, offer an option to rebuild the whole cylinder group.
703 check_cgmagic(int cg, struct bufarea *cgbp)
705 struct cg *cgp = cgbp->b_un.b_cg;
708 * Extended cylinder group checks.
710 if (cg_chkmagic(cgp) &&
711 ((sblock.fs_magic == FS_UFS1_MAGIC &&
712 cgp->cg_old_niblk == sblock.fs_ipg &&
713 cgp->cg_ndblk <= sblock.fs_fpg &&
714 cgp->cg_old_ncyl <= sblock.fs_old_cpg) ||
715 (sblock.fs_magic == FS_UFS2_MAGIC &&
716 cgp->cg_niblk == sblock.fs_ipg &&
717 cgp->cg_ndblk <= sblock.fs_fpg &&
718 cgp->cg_initediblk <= sblock.fs_ipg))) {
721 pfatal("CYLINDER GROUP %d: BAD MAGIC NUMBER", cg);
722 if (!reply("REBUILD CYLINDER GROUP")) {
723 printf("YOU WILL NEED TO RERUN FSCK.\n");
728 * Zero out the cylinder group and then initialize critical fields.
729 * Bit maps and summaries will be recalculated by later passes.
731 memset(cgp, 0, (size_t)sblock.fs_cgsize);
732 cgp->cg_magic = CG_MAGIC;
734 cgp->cg_niblk = sblock.fs_ipg;
735 cgp->cg_initediblk = MIN(sblock.fs_ipg, 2 * INOPB(&sblock));
736 if (cgbase(&sblock, cg) + sblock.fs_fpg < sblock.fs_size)
737 cgp->cg_ndblk = sblock.fs_fpg;
739 cgp->cg_ndblk = sblock.fs_size - cgbase(&sblock, cg);
740 cgp->cg_iusedoff = &cgp->cg_space[0] - (u_char *)(&cgp->cg_firstfield);
741 if (sblock.fs_magic == FS_UFS1_MAGIC) {
743 cgp->cg_initediblk = 0;
744 cgp->cg_old_ncyl = sblock.fs_old_cpg;
745 cgp->cg_old_niblk = sblock.fs_ipg;
746 cgp->cg_old_btotoff = cgp->cg_iusedoff;
747 cgp->cg_old_boff = cgp->cg_old_btotoff +
748 sblock.fs_old_cpg * sizeof(int32_t);
749 cgp->cg_iusedoff = cgp->cg_old_boff +
750 sblock.fs_old_cpg * sizeof(u_int16_t);
752 cgp->cg_freeoff = cgp->cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT);
753 cgp->cg_nextfreeoff = cgp->cg_freeoff + howmany(sblock.fs_fpg,CHAR_BIT);
754 if (sblock.fs_contigsumsize > 0) {
755 cgp->cg_nclusterblks = cgp->cg_ndblk / sblock.fs_frag;
756 cgp->cg_clustersumoff =
757 roundup(cgp->cg_nextfreeoff, sizeof(u_int32_t));
758 cgp->cg_clustersumoff -= sizeof(u_int32_t);
759 cgp->cg_clusteroff = cgp->cg_clustersumoff +
760 (sblock.fs_contigsumsize + 1) * sizeof(u_int32_t);
761 cgp->cg_nextfreeoff = cgp->cg_clusteroff +
762 howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT);
769 * allocate a data block with the specified number of fragments
774 int i, j, k, cg, baseblk;
775 struct bufarea *cgbp;
778 if (frags <= 0 || frags > sblock.fs_frag)
780 for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) {
781 for (j = 0; j <= sblock.fs_frag - frags; j++) {
784 for (k = 1; k < frags; k++)
785 if (testbmap(i + j + k))
791 cg = dtog(&sblock, i + j);
793 cgp = cgbp->b_un.b_cg;
794 if (!check_cgmagic(cg, cgbp))
796 baseblk = dtogd(&sblock, i + j);
797 for (k = 0; k < frags; k++) {
799 clrbit(cg_blksfree(cgp), baseblk + k);
802 if (frags == sblock.fs_frag)
803 cgp->cg_cs.cs_nbfree--;
805 cgp->cg_cs.cs_nffree -= frags;
814 * Free a previously allocated block
817 freeblk(ufs2_daddr_t blkno, long frags)
819 struct inodesc idesc;
821 idesc.id_blkno = blkno;
822 idesc.id_numfrags = frags;
823 (void)pass4check(&idesc);
826 /* Slow down IO so as to leave some disk bandwidth for other processes */
831 /* Delay one in every 8 operations */
832 slowio_pollcnt = (slowio_pollcnt + 1) & 7;
833 if (slowio_pollcnt == 0) {
834 gettimeofday(&slowio_starttime, NULL);
844 if (slowio_pollcnt != 0)
847 /* Update the slowdown interval. */
848 gettimeofday(&tv, NULL);
849 delay_usec = (tv.tv_sec - slowio_starttime.tv_sec) * 1000000 +
850 (tv.tv_usec - slowio_starttime.tv_usec);
853 if (delay_usec > 2500000)
854 delay_usec = 2500000;
855 slowio_delay_usec = (slowio_delay_usec * 63 + delay_usec) >> 6;
856 /* delay by 8 times the average IO delay */
857 if (slowio_delay_usec > 64)
858 usleep(slowio_delay_usec * 8);
865 getpathname(char *namebuf, ino_t curdir, ino_t ino)
869 struct inodesc idesc;
872 if (curdir == ino && ino == UFS_ROOTINO) {
873 (void)strcpy(namebuf, "/");
876 if (busy || !INO_IS_DVALID(curdir)) {
877 (void)strcpy(namebuf, "?");
881 memset(&idesc, 0, sizeof(struct inodesc));
882 idesc.id_type = DATA;
883 idesc.id_fix = IGNORE;
884 cp = &namebuf[MAXPATHLEN - 1];
887 idesc.id_parent = curdir;
890 while (ino != UFS_ROOTINO) {
891 idesc.id_number = ino;
892 idesc.id_func = findino;
893 idesc.id_name = strdup("..");
894 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0)
897 idesc.id_number = idesc.id_parent;
898 idesc.id_parent = ino;
899 idesc.id_func = findname;
900 idesc.id_name = namebuf;
901 if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0)
903 len = strlen(namebuf);
905 memmove(cp, namebuf, (size_t)len);
907 if (cp < &namebuf[UFS_MAXNAMLEN])
909 ino = idesc.id_number;
912 if (ino != UFS_ROOTINO)
914 memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp));
918 catch(int sig __unused)
926 * When preening, allow a single quit to signal
927 * a special exit after file system checks complete
928 * so that reboot sequence may be interrupted.
931 catchquit(int sig __unused)
933 printf("returning to single-user after file system check\n");
935 (void)signal(SIGQUIT, SIG_DFL);
939 * determine whether an inode should be fixed.
942 dofix(struct inodesc *idesc, const char *msg)
945 switch (idesc->id_fix) {
948 if (idesc->id_type == DATA)
949 direrror(idesc->id_number, msg);
953 printf(" (SALVAGED)\n");
957 if (reply("SALVAGE") == 0) {
958 idesc->id_fix = NOFIX;
972 errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix);
981 * An unexpected inconsistency occurred.
982 * Die if preening or file system is running with soft dependency protocol,
983 * otherwise just print message and continue.
986 pfatal(const char *fmt, ...)
991 (void)vfprintf(stdout, fmt, ap);
994 (void)fprintf(stdout,
995 "\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n");
997 * Force foreground fsck to clean up inconsistency.
1000 cmd.value = FS_NEEDSFSCK;
1002 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
1003 &cmd, sizeof cmd) == -1)
1004 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
1005 fprintf(stdout, "CANNOT RUN IN BACKGROUND\n");
1011 if (cdevname == NULL)
1012 cdevname = strdup("fsck");
1013 (void)fprintf(stdout, "%s: ", cdevname);
1014 (void)vfprintf(stdout, fmt, ap);
1015 (void)fprintf(stdout,
1016 "\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n",
1017 cdevname, usedsoftdep ? " SOFT UPDATE " : " ");
1019 * Force foreground fsck to clean up inconsistency.
1022 cmd.value = FS_NEEDSFSCK;
1024 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
1025 &cmd, sizeof cmd) == -1)
1026 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
1033 * Pwarn just prints a message when not preening or running soft dependency
1034 * protocol, or a warning (preceded by filename) when preening.
1037 pwarn(const char *fmt, ...)
1042 (void)fprintf(stdout, "%s: ", cdevname);
1043 (void)vfprintf(stdout, fmt, ap);
1048 * Stub for routines from kernel.
1051 panic(const char *fmt, ...)
1055 pfatal("INTERNAL INCONSISTENCY:");
1056 (void)vfprintf(stdout, fmt, ap);