2 * Copyright (c) 1980, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 static const char sccsid[] = "@(#)utilities.c 8.6 (Berkeley) 5/19/95";
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
40 #include <sys/types.h>
41 #include <sys/sysctl.h>
43 #include <sys/disklabel.h>
44 #include <sys/ioctl.h>
47 #include <ufs/ufs/dinode.h>
48 #include <ufs/ufs/dir.h>
49 #include <ufs/ffs/fs.h>
64 static void slowio_start(void);
65 static void slowio_end(void);
66 static void printIOstats(void);
68 static long diskreads, totaldiskreads, totalreads; /* Disk cache statistics */
69 static struct timespec startpass, finishpass;
70 struct timeval slowio_starttime;
71 int slowio_delay_usec = 10000; /* Initial IO delay for background fsck */
73 static struct bufarea cgblk; /* backup buffer for cylinder group blocks */
74 static TAILQ_HEAD(buflist, bufarea) bufhead; /* head of buffer cache list */
75 static int numbufs; /* size of buffer cache */
76 static char *buftype[BT_NUMBUFTYPES] = BT_NAMES;
77 static struct bufarea *cgbufs; /* header for cylinder group cache */
78 static int flushtries; /* number of tries to reclaim memory */
83 diskreads = totaldiskreads = totalreads = 0;
84 bzero(&startpass, sizeof(struct timespec));
85 bzero(&finishpass, sizeof(struct timespec));
86 bzero(&slowio_starttime, sizeof(struct timeval));
87 slowio_delay_usec = 10000;
89 bzero(&cgblk, sizeof(struct bufarea));
98 ftypeok(union dinode *dp)
100 switch (DIP(dp, di_mode) & IFMT) {
113 printf("bad file type 0%o\n", DIP(dp, di_mode));
119 reply(const char *question)
125 pfatal("INTERNAL ERROR: GOT TO reply()");
126 persevere = !strcmp(question, "CONTINUE");
128 if (!persevere && (nflag || (fswritefd < 0 && bkgrdflag == 0))) {
129 printf("%s? no\n\n", question);
133 if (yflag || (persevere && nflag)) {
134 printf("%s? yes\n\n", question);
138 printf("%s? [yn] ", question);
139 (void) fflush(stdout);
141 while (c != '\n' && getc(stdin) != '\n') {
147 } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N');
149 if (c == 'y' || c == 'Y')
156 * Look up state information for an inode.
161 static struct inostat unallocated = { USTATE, 0, 0 };
162 struct inostatlist *ilp;
166 errx(EEXIT, "inoinfo: inumber %ju out of range",
168 ilp = &inostathead[inum / sblock.fs_ipg];
169 iloff = inum % sblock.fs_ipg;
170 if (iloff >= ilp->il_numalloced)
171 return (&unallocated);
172 return (&ilp->il_stat[iloff]);
176 * Malloc buffers and set up cache.
185 pbp = pdirbp = (struct bufarea *)0;
186 bufp = Malloc((unsigned int)sblock.fs_bsize);
188 errx(EEXIT, "cannot allocate buffer pool");
189 cgblk.b_un.b_buf = bufp;
190 initbarea(&cgblk, BT_CYLGRP);
191 TAILQ_INIT(&bufhead);
193 if (bufcnt < MINBUFS)
195 for (i = 0; i < bufcnt; i++) {
196 bp = (struct bufarea *)Malloc(sizeof(struct bufarea));
197 bufp = Malloc((unsigned int)sblock.fs_bsize);
198 if (bp == NULL || bufp == NULL) {
201 errx(EEXIT, "cannot allocate buffer pool");
203 bp->b_un.b_buf = bufp;
204 TAILQ_INSERT_HEAD(&bufhead, bp, b_list);
205 initbarea(bp, BT_UNKNOWN);
207 numbufs = i; /* save number of buffers */
208 for (i = 0; i < BT_NUMBUFTYPES; i++) {
209 readtime[i].tv_sec = totalreadtime[i].tv_sec = 0;
210 readtime[i].tv_nsec = totalreadtime[i].tv_nsec = 0;
211 readcnt[i] = totalreadcnt[i] = 0;
216 * Manage cylinder group buffers.
218 static struct bufarea *cgbufs; /* header for cylinder group cache */
219 static int flushtries; /* number of tries to reclaim memory */
224 struct bufarea *cgbp;
227 if (cgbufs == NULL) {
228 cgbufs = calloc(sblock.fs_ncg, sizeof(struct bufarea));
230 errx(EEXIT, "cannot allocate cylinder group buffers");
233 if (cgbp->b_un.b_cg != NULL)
237 cgp = malloc((unsigned int)sblock.fs_cgsize);
239 getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize);
242 cgbp->b_un.b_cg = cgp;
243 initbarea(cgbp, BT_CYLGRP);
244 getblk(cgbp, cgtod(&sblock, cg), sblock.fs_cgsize);
249 * Attempt to flush a cylinder group cache entry.
250 * Return whether the flush was successful.
255 struct bufarea *cgbp;
257 if (flushtries == sblock.fs_ncg || cgbufs == NULL)
259 cgbp = &cgbufs[flushtries++];
260 if (cgbp->b_un.b_cg == NULL)
262 flush(fswritefd, cgbp);
263 free(cgbp->b_un.b_buf);
264 cgbp->b_un.b_buf = NULL;
269 * Manage a cache of directory blocks.
272 getdatablk(ufs2_daddr_t blkno, long size, int type)
276 TAILQ_FOREACH(bp, &bufhead, b_list)
277 if (bp->b_bno == fsbtodb(&sblock, blkno))
279 TAILQ_FOREACH_REVERSE(bp, &bufhead, buflist, b_list)
280 if ((bp->b_flags & B_INUSE) == 0)
283 errx(EEXIT, "deadlocked buffer pool");
285 getblk(bp, blkno, size);
288 if (debug && bp->b_type != type)
289 printf("Buffer type changed from %s to %s\n",
290 buftype[bp->b_type], buftype[type]);
291 TAILQ_REMOVE(&bufhead, bp, b_list);
292 TAILQ_INSERT_HEAD(&bufhead, bp, b_list);
293 bp->b_flags |= B_INUSE;
298 * Timespec operations (from <sys/time.h>).
300 #define timespecsub(vvp, uvp) \
302 (vvp)->tv_sec -= (uvp)->tv_sec; \
303 (vvp)->tv_nsec -= (uvp)->tv_nsec; \
304 if ((vvp)->tv_nsec < 0) { \
306 (vvp)->tv_nsec += 1000000000; \
309 #define timespecadd(vvp, uvp) \
311 (vvp)->tv_sec += (uvp)->tv_sec; \
312 (vvp)->tv_nsec += (uvp)->tv_nsec; \
313 if ((vvp)->tv_nsec >= 1000000000) { \
315 (vvp)->tv_nsec -= 1000000000; \
320 getblk(struct bufarea *bp, ufs2_daddr_t blk, long size)
323 struct timespec start, finish;
325 dblk = fsbtodb(&sblock, blk);
326 if (bp->b_bno == dblk) {
329 flush(fswritefd, bp);
331 readcnt[bp->b_type]++;
332 clock_gettime(CLOCK_REALTIME_PRECISE, &start);
334 bp->b_errs = blread(fsreadfd, bp->b_un.b_buf, dblk, size);
336 clock_gettime(CLOCK_REALTIME_PRECISE, &finish);
337 timespecsub(&finish, &start);
338 timespecadd(&readtime[bp->b_type], &finish);
346 flush(int fd, struct bufarea *bp)
354 pfatal("WRITING IN READ_ONLY MODE.\n");
358 pfatal("WRITING %sZERO'ED BLOCK %lld TO DISK\n",
359 (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ",
360 (long long)bp->b_bno);
362 blwrite(fd, bp->b_un.b_buf, bp->b_bno, bp->b_size);
365 for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) {
366 blwrite(fswritefd, (char *)sblock.fs_csp + i,
367 fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag),
368 sblock.fs_cssize - i < sblock.fs_bsize ?
369 sblock.fs_cssize - i : sblock.fs_bsize);
374 rwerror(const char *mesg, ufs2_daddr_t blk)
381 pfatal("CANNOT %s: %ld", mesg, (long)blk);
382 if (reply("CONTINUE") == 0)
387 ckfini(int markclean)
389 struct bufarea *bp, *nbp;
390 int ofsmodified, cnt;
394 if ((!(sblock.fs_flags & FS_UNCLEAN)) != markclean) {
395 cmd.value = FS_UNCLEAN;
396 cmd.size = markclean ? -1 : 1;
397 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
398 &cmd, sizeof cmd) == -1)
399 rwerror("SET FILE SYSTEM FLAGS", FS_UNCLEAN);
401 printf("\n***** FILE SYSTEM MARKED %s *****\n",
402 markclean ? "CLEAN" : "DIRTY");
406 } else if (!preen && !markclean) {
407 printf("\n***** FILE SYSTEM STILL DIRTY *****\n");
411 if (debug && totalreads > 0)
412 printf("cache with %d buffers missed %ld of %ld (%d%%)\n",
413 numbufs, totaldiskreads, totalreads,
414 (int)(totaldiskreads * 100 / totalreads));
416 (void)close(fsreadfd);
419 flush(fswritefd, &sblk);
420 if (havesb && cursnapshot == 0 && sblock.fs_magic == FS_UFS2_MAGIC &&
421 sblk.b_bno != sblock.fs_sblockloc / dev_bsize &&
422 !preen && reply("UPDATE STANDARD SUPERBLOCK")) {
423 sblk.b_bno = sblock.fs_sblockloc / dev_bsize;
425 flush(fswritefd, &sblk);
427 flush(fswritefd, &cgblk);
428 free(cgblk.b_un.b_buf);
430 TAILQ_FOREACH_REVERSE_SAFE(bp, &bufhead, buflist, b_list, nbp) {
431 TAILQ_REMOVE(&bufhead, bp, b_list);
433 flush(fswritefd, bp);
434 free(bp->b_un.b_buf);
438 errx(EEXIT, "panic: lost %d buffers", numbufs - cnt);
439 if (cgbufs != NULL) {
440 for (cnt = 0; cnt < sblock.fs_ncg; cnt++) {
441 if (cgbufs[cnt].b_un.b_cg == NULL)
443 flush(fswritefd, &cgbufs[cnt]);
444 free(cgbufs[cnt].b_un.b_cg);
448 pbp = pdirbp = (struct bufarea *)0;
449 if (cursnapshot == 0 && sblock.fs_clean != markclean) {
450 if ((sblock.fs_clean = markclean) != 0) {
451 sblock.fs_flags &= ~(FS_UNCLEAN | FS_NEEDSFSCK);
452 sblock.fs_pendingblocks = 0;
453 sblock.fs_pendinginodes = 0;
456 ofsmodified = fsmodified;
457 flush(fswritefd, &sblk);
458 fsmodified = ofsmodified;
460 printf("\n***** FILE SYSTEM MARKED %s *****\n",
461 markclean ? "CLEAN" : "DIRTY");
467 printf("\n***** FILE SYSTEM IS CLEAN *****\n");
469 printf("\n***** FILE SYSTEM STILL DIRTY *****\n");
473 (void)close(fsreadfd);
474 (void)close(fswritefd);
478 * Print out I/O statistics.
487 if (diskreads == 0) {
488 printf("%s: no I/O\n\n", what);
491 if (startpass.tv_sec == 0)
492 startpass = startprog;
493 printf("%s: I/O statistics\n", what);
495 totaldiskreads += diskreads;
497 for (i = 0; i < BT_NUMBUFTYPES; i++) {
498 timespecadd(&totalreadtime[i], &readtime[i]);
499 totalreadcnt[i] += readcnt[i];
500 readtime[i].tv_sec = readtime[i].tv_nsec = 0;
503 clock_gettime(CLOCK_REALTIME_PRECISE, &startpass);
513 printf("Final I/O statistics\n");
514 totaldiskreads += diskreads;
515 diskreads = totaldiskreads;
516 startpass = startprog;
517 for (i = 0; i < BT_NUMBUFTYPES; i++) {
518 timespecadd(&totalreadtime[i], &readtime[i]);
519 totalreadcnt[i] += readcnt[i];
520 readtime[i] = totalreadtime[i];
521 readcnt[i] = totalreadcnt[i];
526 static void printIOstats(void)
528 long long msec, totalmsec;
531 clock_gettime(CLOCK_REALTIME_PRECISE, &finishpass);
532 timespecsub(&finishpass, &startpass);
533 printf("Running time: %jd.%03ld sec\n",
534 (intmax_t)finishpass.tv_sec, finishpass.tv_nsec / 1000000);
535 printf("buffer reads by type:\n");
536 for (totalmsec = 0, i = 0; i < BT_NUMBUFTYPES; i++)
537 totalmsec += readtime[i].tv_sec * 1000 +
538 readtime[i].tv_nsec / 1000000;
541 for (i = 0; i < BT_NUMBUFTYPES; i++) {
545 readtime[i].tv_sec * 1000 + readtime[i].tv_nsec / 1000000;
546 printf("%21s:%8ld %2ld.%ld%% %4jd.%03ld sec %2lld.%lld%%\n",
547 buftype[i], readcnt[i], readcnt[i] * 100 / diskreads,
548 (readcnt[i] * 1000 / diskreads) % 10,
549 (intmax_t)readtime[i].tv_sec, readtime[i].tv_nsec / 1000000,
550 msec * 100 / totalmsec, (msec * 1000 / totalmsec) % 10);
556 blread(int fd, char *buf, ufs2_daddr_t blk, long size)
568 if (lseek(fd, offset, 0) < 0)
569 rwerror("SEEK BLK", blk);
570 else if (read(fd, buf, (int)size) == size) {
577 * This is handled specially here instead of in rwerror because
578 * rwerror is used for all sorts of errors, not just true read/write
579 * errors. It should be refactored and fixed.
582 pfatal("CANNOT READ_BLK: %ld", (long)blk);
583 errx(EEXIT, "ABORTING DUE TO READ ERRORS");
585 rwerror("READ BLK", blk);
587 if (lseek(fd, offset, 0) < 0)
588 rwerror("SEEK BLK", blk);
590 memset(buf, 0, (size_t)size);
591 printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:");
592 for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) {
593 if (read(fd, cp, (int)secsize) != secsize) {
594 (void)lseek(fd, offset + i + secsize, 0);
595 if (secsize != dev_bsize && dev_bsize != 1)
596 printf(" %jd (%jd),",
597 (intmax_t)(blk * dev_bsize + i) / secsize,
598 (intmax_t)blk + i / dev_bsize);
600 printf(" %jd,", (intmax_t)blk + i / dev_bsize);
611 blwrite(int fd, char *buf, ufs2_daddr_t blk, ssize_t size)
621 if (lseek(fd, offset, 0) < 0)
622 rwerror("SEEK BLK", blk);
623 else if (write(fd, buf, size) == size) {
628 rwerror("WRITE BLK", blk);
629 if (lseek(fd, offset, 0) < 0)
630 rwerror("SEEK BLK", blk);
631 printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:");
632 for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize)
633 if (write(fd, cp, dev_bsize) != dev_bsize) {
634 (void)lseek(fd, offset + i + dev_bsize, 0);
635 printf(" %jd,", (intmax_t)blk + i / dev_bsize);
642 blerase(int fd, ufs2_daddr_t blk, long size)
648 ioarg[0] = blk * dev_bsize;
650 ioctl(fd, DIOCGDELETE, ioarg);
651 /* we don't really care if we succeed or not */
656 * Fill a contiguous region with all-zeroes. Note ZEROBUFSIZE is by
657 * definition a multiple of dev_bsize.
660 blzero(int fd, ufs2_daddr_t blk, long size)
668 zero = calloc(ZEROBUFSIZE, 1);
670 errx(EEXIT, "cannot allocate buffer pool");
672 offset = blk * dev_bsize;
673 if (lseek(fd, offset, 0) < 0)
674 rwerror("SEEK BLK", blk);
676 len = size > ZEROBUFSIZE ? ZEROBUFSIZE : size;
677 if (write(fd, zero, len) != len)
678 rwerror("WRITE BLK", blk);
679 blk += len / dev_bsize;
685 * Verify cylinder group's magic number and other parameters. If the
686 * test fails, offer an option to rebuild the whole cylinder group.
689 check_cgmagic(int cg, struct bufarea *cgbp)
691 struct cg *cgp = cgbp->b_un.b_cg;
694 * Extended cylinder group checks.
696 if (cg_chkmagic(cgp) &&
697 ((sblock.fs_magic == FS_UFS1_MAGIC &&
698 cgp->cg_old_niblk == sblock.fs_ipg &&
699 cgp->cg_ndblk <= sblock.fs_fpg &&
700 cgp->cg_old_ncyl <= sblock.fs_old_cpg) ||
701 (sblock.fs_magic == FS_UFS2_MAGIC &&
702 cgp->cg_niblk == sblock.fs_ipg &&
703 cgp->cg_ndblk <= sblock.fs_fpg &&
704 cgp->cg_initediblk <= sblock.fs_ipg))) {
707 pfatal("CYLINDER GROUP %d: BAD MAGIC NUMBER", cg);
708 if (!reply("REBUILD CYLINDER GROUP")) {
709 printf("YOU WILL NEED TO RERUN FSCK.\n");
714 * Zero out the cylinder group and then initialize critical fields.
715 * Bit maps and summaries will be recalculated by later passes.
717 memset(cgp, 0, (size_t)sblock.fs_cgsize);
718 cgp->cg_magic = CG_MAGIC;
720 cgp->cg_niblk = sblock.fs_ipg;
721 cgp->cg_initediblk = sblock.fs_ipg < 2 * INOPB(&sblock) ?
722 sblock.fs_ipg : 2 * INOPB(&sblock);
723 if (cgbase(&sblock, cg) + sblock.fs_fpg < sblock.fs_size)
724 cgp->cg_ndblk = sblock.fs_fpg;
726 cgp->cg_ndblk = sblock.fs_size - cgbase(&sblock, cg);
727 cgp->cg_iusedoff = &cgp->cg_space[0] - (u_char *)(&cgp->cg_firstfield);
728 if (sblock.fs_magic == FS_UFS1_MAGIC) {
730 cgp->cg_initediblk = 0;
731 cgp->cg_old_ncyl = sblock.fs_old_cpg;
732 cgp->cg_old_niblk = sblock.fs_ipg;
733 cgp->cg_old_btotoff = cgp->cg_iusedoff;
734 cgp->cg_old_boff = cgp->cg_old_btotoff +
735 sblock.fs_old_cpg * sizeof(int32_t);
736 cgp->cg_iusedoff = cgp->cg_old_boff +
737 sblock.fs_old_cpg * sizeof(u_int16_t);
739 cgp->cg_freeoff = cgp->cg_iusedoff + howmany(sblock.fs_ipg, CHAR_BIT);
740 cgp->cg_nextfreeoff = cgp->cg_freeoff + howmany(sblock.fs_fpg,CHAR_BIT);
741 if (sblock.fs_contigsumsize > 0) {
742 cgp->cg_nclusterblks = cgp->cg_ndblk / sblock.fs_frag;
743 cgp->cg_clustersumoff =
744 roundup(cgp->cg_nextfreeoff, sizeof(u_int32_t));
745 cgp->cg_clustersumoff -= sizeof(u_int32_t);
746 cgp->cg_clusteroff = cgp->cg_clustersumoff +
747 (sblock.fs_contigsumsize + 1) * sizeof(u_int32_t);
748 cgp->cg_nextfreeoff = cgp->cg_clusteroff +
749 howmany(fragstoblks(&sblock, sblock.fs_fpg), CHAR_BIT);
756 * allocate a data block with the specified number of fragments
761 int i, j, k, cg, baseblk;
762 struct bufarea *cgbp;
765 if (frags <= 0 || frags > sblock.fs_frag)
767 for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) {
768 for (j = 0; j <= sblock.fs_frag - frags; j++) {
771 for (k = 1; k < frags; k++)
772 if (testbmap(i + j + k))
778 cg = dtog(&sblock, i + j);
780 cgp = cgbp->b_un.b_cg;
781 if (!check_cgmagic(cg, cgbp))
783 baseblk = dtogd(&sblock, i + j);
784 for (k = 0; k < frags; k++) {
786 clrbit(cg_blksfree(cgp), baseblk + k);
789 if (frags == sblock.fs_frag)
790 cgp->cg_cs.cs_nbfree--;
792 cgp->cg_cs.cs_nffree -= frags;
801 * Free a previously allocated block
804 freeblk(ufs2_daddr_t blkno, long frags)
806 struct inodesc idesc;
808 idesc.id_blkno = blkno;
809 idesc.id_numfrags = frags;
810 (void)pass4check(&idesc);
813 /* Slow down IO so as to leave some disk bandwidth for other processes */
818 /* Delay one in every 8 operations */
819 slowio_pollcnt = (slowio_pollcnt + 1) & 7;
820 if (slowio_pollcnt == 0) {
821 gettimeofday(&slowio_starttime, NULL);
831 if (slowio_pollcnt != 0)
834 /* Update the slowdown interval. */
835 gettimeofday(&tv, NULL);
836 delay_usec = (tv.tv_sec - slowio_starttime.tv_sec) * 1000000 +
837 (tv.tv_usec - slowio_starttime.tv_usec);
840 if (delay_usec > 2500000)
841 delay_usec = 2500000;
842 slowio_delay_usec = (slowio_delay_usec * 63 + delay_usec) >> 6;
843 /* delay by 8 times the average IO delay */
844 if (slowio_delay_usec > 64)
845 usleep(slowio_delay_usec * 8);
852 getpathname(char *namebuf, ino_t curdir, ino_t ino)
856 struct inodesc idesc;
859 if (curdir == ino && ino == ROOTINO) {
860 (void)strcpy(namebuf, "/");
863 if (busy || !INO_IS_DVALID(curdir)) {
864 (void)strcpy(namebuf, "?");
868 memset(&idesc, 0, sizeof(struct inodesc));
869 idesc.id_type = DATA;
870 idesc.id_fix = IGNORE;
871 cp = &namebuf[MAXPATHLEN - 1];
874 idesc.id_parent = curdir;
877 while (ino != ROOTINO) {
878 idesc.id_number = ino;
879 idesc.id_func = findino;
880 idesc.id_name = strdup("..");
881 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0)
884 idesc.id_number = idesc.id_parent;
885 idesc.id_parent = ino;
886 idesc.id_func = findname;
887 idesc.id_name = namebuf;
888 if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0)
890 len = strlen(namebuf);
892 memmove(cp, namebuf, (size_t)len);
894 if (cp < &namebuf[MAXNAMLEN])
896 ino = idesc.id_number;
901 memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp));
905 catch(int sig __unused)
913 * When preening, allow a single quit to signal
914 * a special exit after file system checks complete
915 * so that reboot sequence may be interrupted.
918 catchquit(int sig __unused)
920 printf("returning to single-user after file system check\n");
922 (void)signal(SIGQUIT, SIG_DFL);
926 * determine whether an inode should be fixed.
929 dofix(struct inodesc *idesc, const char *msg)
932 switch (idesc->id_fix) {
935 if (idesc->id_type == DATA)
936 direrror(idesc->id_number, msg);
940 printf(" (SALVAGED)\n");
944 if (reply("SALVAGE") == 0) {
945 idesc->id_fix = NOFIX;
959 errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix);
968 * An unexpected inconsistency occurred.
969 * Die if preening or file system is running with soft dependency protocol,
970 * otherwise just print message and continue.
973 pfatal(const char *fmt, ...)
978 (void)vfprintf(stdout, fmt, ap);
981 (void)fprintf(stdout,
982 "\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n");
984 * Force foreground fsck to clean up inconsistency.
987 cmd.value = FS_NEEDSFSCK;
989 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
990 &cmd, sizeof cmd) == -1)
991 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
992 fprintf(stdout, "CANNOT RUN IN BACKGROUND\n");
998 if (cdevname == NULL)
999 cdevname = strdup("fsck");
1000 (void)fprintf(stdout, "%s: ", cdevname);
1001 (void)vfprintf(stdout, fmt, ap);
1002 (void)fprintf(stdout,
1003 "\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n",
1004 cdevname, usedsoftdep ? " SOFT UPDATE " : " ");
1006 * Force foreground fsck to clean up inconsistency.
1009 cmd.value = FS_NEEDSFSCK;
1011 if (sysctlbyname("vfs.ffs.setflags", 0, 0,
1012 &cmd, sizeof cmd) == -1)
1013 pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
1020 * Pwarn just prints a message when not preening or running soft dependency
1021 * protocol, or a warning (preceded by filename) when preening.
1024 pwarn(const char *fmt, ...)
1029 (void)fprintf(stdout, "%s: ", cdevname);
1030 (void)vfprintf(stdout, fmt, ap);
1035 * Stub for routines from kernel.
1038 panic(const char *fmt, ...)
1042 pfatal("INTERNAL INCONSISTENCY:");
1043 (void)vfprintf(stdout, fmt, ap);