fsutil.c revision 75927
166864Sadrian/* 266864Sadrian * Copyright (c) 1980, 1986, 1993 366864Sadrian * The Regents of the University of California. All rights reserved. 466864Sadrian * 566864Sadrian * Redistribution and use in source and binary forms, with or without 666864Sadrian * modification, are permitted provided that the following conditions 766864Sadrian * are met: 866864Sadrian * 1. Redistributions of source code must retain the above copyright 966864Sadrian * notice, this list of conditions and the following disclaimer. 1066864Sadrian * 2. Redistributions in binary form must reproduce the above copyright 1166864Sadrian * notice, this list of conditions and the following disclaimer in the 1266864Sadrian * documentation and/or other materials provided with the distribution. 1366864Sadrian * 3. All advertising materials mentioning features or use of this software 1466864Sadrian * must display the following acknowledgement: 1566864Sadrian * This product includes software developed by the University of 1666864Sadrian * California, Berkeley and its contributors. 1766864Sadrian * 4. Neither the name of the University nor the names of its contributors 1866864Sadrian * may be used to endorse or promote products derived from this software 1966864Sadrian * without specific prior written permission. 2066864Sadrian * 2166864Sadrian * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2266864Sadrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2366864Sadrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2466864Sadrian * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2566864Sadrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2666864Sadrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2766864Sadrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2866864Sadrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2966864Sadrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3066864Sadrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3166864Sadrian * SUCH DAMAGE. 3266864Sadrian */ 3366864Sadrian 3466864Sadrian#ifndef lint 3566864Sadrian#if 0 3666864Sadrianstatic const char sccsid[] = "@(#)utilities.c 8.6 (Berkeley) 5/19/95"; 3766864Sadrian#endif 3866864Sadrianstatic const char rcsid[] = 3966866Sadrian "$FreeBSD: head/sbin/fsck_ffs/fsutil.c 75927 2001-04-24 22:38:08Z mckusick $"; 4066864Sadrian#endif /* not lint */ 4166864Sadrian 4266864Sadrian#include <sys/param.h> 4366864Sadrian#include <sys/types.h> 4466864Sadrian#include <sys/stat.h> 4566864Sadrian 4666864Sadrian#include <ufs/ufs/dinode.h> 4766864Sadrian#include <ufs/ufs/dir.h> 4866864Sadrian#include <ufs/ffs/fs.h> 4966864Sadrian 5066864Sadrian#include <err.h> 5166864Sadrian#include <errno.h> 5266864Sadrian#include <string.h> 5366864Sadrian#include <ctype.h> 5466864Sadrian#include <fstab.h> 5566864Sadrian#include <stdio.h> 5666864Sadrian#include <stdlib.h> 5766864Sadrian#include <unistd.h> 5866864Sadrian 5966864Sadrian#include "fsck.h" 6066864Sadrian 6166864Sadrianlong diskreads, totalreads; /* Disk cache statistics */ 6266864Sadrian 6366864Sadrianint 6466864Sadrianftypeok(dp) 6566864Sadrian struct dinode *dp; 6666864Sadrian{ 6766864Sadrian switch (dp->di_mode & IFMT) { 6866864Sadrian 6966864Sadrian case IFDIR: 7066864Sadrian case IFREG: 7166864Sadrian case IFBLK: 7266864Sadrian case IFCHR: 7366864Sadrian case IFLNK: 7466864Sadrian case IFSOCK: 7566864Sadrian case IFIFO: 7666864Sadrian return (1); 7766864Sadrian 7866864Sadrian default: 7966864Sadrian if (debug) 8066864Sadrian printf("bad file type 0%o\n", dp->di_mode); 8166864Sadrian return (0); 8266864Sadrian } 8366864Sadrian} 8466864Sadrian 8566864Sadrianint 8666864Sadrianreply(question) 8766864Sadrian char *question; 8866864Sadrian{ 8966864Sadrian int persevere; 9066864Sadrian char c; 9166864Sadrian 9266864Sadrian if (preen) 9366864Sadrian pfatal("INTERNAL ERROR: GOT TO reply()"); 9466864Sadrian persevere = !strcmp(question, "CONTINUE"); 9566864Sadrian printf("\n"); 9674556Smckusick if (!persevere && (nflag || (fswritefd < 0 && bkgrdflag == 0))) { 9766864Sadrian printf("%s? no\n\n", question); 9866864Sadrian resolved = 0; 9966864Sadrian return (0); 10066864Sadrian } 10166864Sadrian if (yflag || (persevere && nflag)) { 10266864Sadrian printf("%s? yes\n\n", question); 10366864Sadrian return (1); 10466864Sadrian } 10566864Sadrian do { 10666864Sadrian printf("%s? [yn] ", question); 10766864Sadrian (void) fflush(stdout); 10866864Sadrian c = getc(stdin); 10966864Sadrian while (c != '\n' && getc(stdin) != '\n') { 11066864Sadrian if (feof(stdin)) { 11166864Sadrian resolved = 0; 11266864Sadrian return (0); 11366864Sadrian } 11466864Sadrian } 11566864Sadrian } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); 11666864Sadrian printf("\n"); 11766864Sadrian if (c == 'y' || c == 'Y') 11866864Sadrian return (1); 11966864Sadrian resolved = 0; 12066864Sadrian return (0); 12166864Sadrian} 12266864Sadrian 12366864Sadrian/* 12466864Sadrian * Look up state information for an inode. 12566864Sadrian */ 12666864Sadrianstruct inostat * 12766864Sadrianinoinfo(inum) 12866864Sadrian ino_t inum; 12966864Sadrian{ 13066864Sadrian static struct inostat unallocated = { USTATE, 0, 0 }; 13166864Sadrian struct inostatlist *ilp; 13266864Sadrian int iloff; 13366864Sadrian 13466864Sadrian if (inum > maxino) 13566864Sadrian errx(EEXIT, "inoinfo: inumber %d out of range", inum); 13666864Sadrian ilp = &inostathead[inum / sblock.fs_ipg]; 13766864Sadrian iloff = inum % sblock.fs_ipg; 13866864Sadrian if (iloff >= ilp->il_numalloced) 13966864Sadrian return (&unallocated); 14066864Sadrian return (&ilp->il_stat[iloff]); 14166864Sadrian} 14266864Sadrian 14366864Sadrian/* 14466864Sadrian * Malloc buffers and set up cache. 14566864Sadrian */ 14666864Sadrianvoid 14766864Sadrianbufinit() 14866864Sadrian{ 14966864Sadrian register struct bufarea *bp; 15066864Sadrian long bufcnt, i; 15166864Sadrian char *bufp; 15266864Sadrian 15366864Sadrian pbp = pdirbp = (struct bufarea *)0; 15466864Sadrian bufp = malloc((unsigned int)sblock.fs_bsize); 15566864Sadrian if (bufp == 0) 15666864Sadrian errx(EEXIT, "cannot allocate buffer pool"); 15766864Sadrian cgblk.b_un.b_buf = bufp; 15866864Sadrian initbarea(&cgblk); 15966864Sadrian bufhead.b_next = bufhead.b_prev = &bufhead; 16066864Sadrian bufcnt = MAXBUFSPACE / sblock.fs_bsize; 16166864Sadrian if (bufcnt < MINBUFS) 16266864Sadrian bufcnt = MINBUFS; 16366864Sadrian for (i = 0; i < bufcnt; i++) { 16466864Sadrian bp = (struct bufarea *)malloc(sizeof(struct bufarea)); 16566864Sadrian bufp = malloc((unsigned int)sblock.fs_bsize); 16666864Sadrian if (bp == NULL || bufp == NULL) { 16766864Sadrian if (i >= MINBUFS) 16866864Sadrian break; 16966864Sadrian errx(EEXIT, "cannot allocate buffer pool"); 17066864Sadrian } 17166864Sadrian bp->b_un.b_buf = bufp; 17266864Sadrian bp->b_prev = &bufhead; 17366864Sadrian bp->b_next = bufhead.b_next; 17466864Sadrian bufhead.b_next->b_prev = bp; 17566864Sadrian bufhead.b_next = bp; 17666864Sadrian initbarea(bp); 17766864Sadrian } 17866864Sadrian bufhead.b_size = i; /* save number of buffers */ 17966864Sadrian} 18066864Sadrian 18166864Sadrian/* 18266864Sadrian * Manage a cache of directory blocks. 18366864Sadrian */ 18466864Sadrianstruct bufarea * 18566864Sadriangetdatablk(blkno, size) 18666864Sadrian ufs_daddr_t blkno; 18766864Sadrian long size; 18866864Sadrian{ 18966864Sadrian register struct bufarea *bp; 19066864Sadrian 19166864Sadrian for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next) 19266864Sadrian if (bp->b_bno == fsbtodb(&sblock, blkno)) 19366864Sadrian goto foundit; 19466864Sadrian for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev) 19566864Sadrian if ((bp->b_flags & B_INUSE) == 0) 19666864Sadrian break; 19766864Sadrian if (bp == &bufhead) 19866864Sadrian errx(EEXIT, "deadlocked buffer pool"); 19966864Sadrian getblk(bp, blkno, size); 20066864Sadrian /* fall through */ 20166864Sadrianfoundit: 20266864Sadrian totalreads++; 20366864Sadrian bp->b_prev->b_next = bp->b_next; 20466864Sadrian bp->b_next->b_prev = bp->b_prev; 20566864Sadrian bp->b_prev = &bufhead; 20666864Sadrian bp->b_next = bufhead.b_next; 20766864Sadrian bufhead.b_next->b_prev = bp; 20866864Sadrian bufhead.b_next = bp; 20966864Sadrian bp->b_flags |= B_INUSE; 21066864Sadrian return (bp); 21166864Sadrian} 21266864Sadrian 21366864Sadrianvoid 21466864Sadriangetblk(bp, blk, size) 21566864Sadrian register struct bufarea *bp; 21666864Sadrian ufs_daddr_t blk; 21766864Sadrian long size; 21866864Sadrian{ 21966864Sadrian ufs_daddr_t dblk; 22066864Sadrian 22166864Sadrian dblk = fsbtodb(&sblock, blk); 22266864Sadrian if (bp->b_bno != dblk) { 22366864Sadrian flush(fswritefd, bp); 22466864Sadrian diskreads++; 22566864Sadrian bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size); 22666864Sadrian bp->b_bno = dblk; 22766864Sadrian bp->b_size = size; 22866864Sadrian } 22966864Sadrian} 23066864Sadrian 23166864Sadrianvoid 23266864Sadrianflush(fd, bp) 23366864Sadrian int fd; 23466864Sadrian register struct bufarea *bp; 23566864Sadrian{ 23666864Sadrian register int i, j; 23766864Sadrian 23866864Sadrian if (!bp->b_dirty) 23966864Sadrian return; 24074556Smckusick bp->b_dirty = 0; 24174556Smckusick if (fswritefd < 0) { 24274556Smckusick pfatal("WRITING IN READ_ONLY MODE.\n"); 24374556Smckusick return; 24474556Smckusick } 24566864Sadrian if (bp->b_errs != 0) 24666864Sadrian pfatal("WRITING %sZERO'ED BLOCK %d TO DISK\n", 24766864Sadrian (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ", 24866864Sadrian bp->b_bno); 24966864Sadrian bp->b_errs = 0; 25066864Sadrian bwrite(fd, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); 25166864Sadrian if (bp != &sblk) 25266864Sadrian return; 25366864Sadrian for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { 25471073Siedowse bwrite(fswritefd, (char *)sblock.fs_csp + i, 25566864Sadrian fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), 25666864Sadrian sblock.fs_cssize - i < sblock.fs_bsize ? 25766864Sadrian sblock.fs_cssize - i : sblock.fs_bsize); 25866864Sadrian } 25966864Sadrian} 26066864Sadrian 26174556Smckusickvoid 26266864Sadrianrwerror(mesg, blk) 26366864Sadrian char *mesg; 26466864Sadrian ufs_daddr_t blk; 26566864Sadrian{ 26666864Sadrian 26775927Smckusick if (bkgrdcheck) 26875927Smckusick exit(EEXIT); 26966864Sadrian if (preen == 0) 27066864Sadrian printf("\n"); 27174556Smckusick pfatal("CANNOT %s: %ld", mesg, blk); 27266864Sadrian if (reply("CONTINUE") == 0) 27366864Sadrian exit(EEXIT); 27466864Sadrian} 27566864Sadrian 27666864Sadrianvoid 27766864Sadrianckfini(markclean) 27866864Sadrian int markclean; 27966864Sadrian{ 28066864Sadrian register struct bufarea *bp, *nbp; 28166864Sadrian int ofsmodified, cnt = 0; 28266864Sadrian 28374556Smckusick if (bkgrdflag) { 28474556Smckusick unlink(snapname); 28574556Smckusick if ((!(sblock.fs_flags & FS_UNCLEAN)) != markclean) { 28674556Smckusick cmd.value = FS_UNCLEAN; 28774556Smckusick cmd.size = markclean ? -1 : 1; 28874556Smckusick if (sysctlbyname("vfs.ffs.setflags", 0, 0, 28974556Smckusick &cmd, sizeof cmd) == -1) 29074556Smckusick rwerror("SET FILESYSTEM FLAGS", FS_UNCLEAN); 29174556Smckusick if (!preen) { 29274556Smckusick printf("\n***** FILE SYSTEM MARKED %s *****\n", 29374556Smckusick markclean ? "CLEAN" : "DIRTY"); 29474556Smckusick if (!markclean) 29574556Smckusick rerun = 1; 29674556Smckusick } 29774556Smckusick } else if (!preen && !markclean) { 29874556Smckusick printf("\n***** FILE SYSTEM STILL DIRTY *****\n"); 29974556Smckusick rerun = 1; 30074556Smckusick } 30174556Smckusick } 30266864Sadrian if (fswritefd < 0) { 30366864Sadrian (void)close(fsreadfd); 30466864Sadrian return; 30566864Sadrian } 30666864Sadrian flush(fswritefd, &sblk); 30774556Smckusick if (havesb && sblk.b_bno != SBOFF / dev_bsize && cursnapshot == 0 && 30866864Sadrian !preen && reply("UPDATE STANDARD SUPERBLOCK")) { 30966864Sadrian sblk.b_bno = SBOFF / dev_bsize; 31066864Sadrian sbdirty(); 31166864Sadrian flush(fswritefd, &sblk); 31266864Sadrian } 31366864Sadrian flush(fswritefd, &cgblk); 31466864Sadrian free(cgblk.b_un.b_buf); 31566864Sadrian for (bp = bufhead.b_prev; bp && bp != &bufhead; bp = nbp) { 31666864Sadrian cnt++; 31766864Sadrian flush(fswritefd, bp); 31866864Sadrian nbp = bp->b_prev; 31966864Sadrian free(bp->b_un.b_buf); 32066864Sadrian free((char *)bp); 32166864Sadrian } 32266864Sadrian if (bufhead.b_size != cnt) 32366864Sadrian errx(EEXIT, "panic: lost %d buffers", bufhead.b_size - cnt); 32466864Sadrian pbp = pdirbp = (struct bufarea *)0; 32574556Smckusick if (cursnapshot == 0 && sblock.fs_clean != markclean) { 32675557Smckusick if ((sblock.fs_clean = markclean) != 0) 32775557Smckusick sblock.fs_flags &= ~(FS_UNCLEAN | FS_NEEDSFSCK); 32866864Sadrian sbdirty(); 32966864Sadrian ofsmodified = fsmodified; 33066864Sadrian flush(fswritefd, &sblk); 33166864Sadrian fsmodified = ofsmodified; 33266864Sadrian if (!preen) { 33366864Sadrian printf("\n***** FILE SYSTEM MARKED %s *****\n", 33466864Sadrian markclean ? "CLEAN" : "DIRTY"); 33566864Sadrian if (!markclean) 33666864Sadrian rerun = 1; 33766864Sadrian } 33866864Sadrian } else if (!preen && !markclean) { 33966864Sadrian printf("\n***** FILE SYSTEM STILL DIRTY *****\n"); 34066864Sadrian rerun = 1; 34166864Sadrian } 34275557Smckusick if (debug && totalreads > 0) 34366864Sadrian printf("cache missed %ld of %ld (%d%%)\n", diskreads, 34466864Sadrian totalreads, (int)(diskreads * 100 / totalreads)); 34566864Sadrian (void)close(fsreadfd); 34666864Sadrian (void)close(fswritefd); 34766864Sadrian} 34866864Sadrian 34966864Sadrianint 35066864Sadrianbread(fd, buf, blk, size) 35166864Sadrian int fd; 35266864Sadrian char *buf; 35366864Sadrian ufs_daddr_t blk; 35466864Sadrian long size; 35566864Sadrian{ 35666864Sadrian char *cp; 35766864Sadrian int i, errs; 35866864Sadrian off_t offset; 35966864Sadrian 36066864Sadrian offset = blk; 36166864Sadrian offset *= dev_bsize; 36266864Sadrian if (lseek(fd, offset, 0) < 0) 36374556Smckusick rwerror("SEEK BLK", blk); 36466864Sadrian else if (read(fd, buf, (int)size) == size) 36566864Sadrian return (0); 36674556Smckusick rwerror("READ BLK", blk); 36766864Sadrian if (lseek(fd, offset, 0) < 0) 36874556Smckusick rwerror("SEEK BLK", blk); 36966864Sadrian errs = 0; 37066864Sadrian memset(buf, 0, (size_t)size); 37166864Sadrian printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:"); 37266864Sadrian for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) { 37366864Sadrian if (read(fd, cp, (int)secsize) != secsize) { 37466864Sadrian (void)lseek(fd, offset + i + secsize, 0); 37566864Sadrian if (secsize != dev_bsize && dev_bsize != 1) 37666864Sadrian printf(" %ld (%ld),", 37766864Sadrian (blk * dev_bsize + i) / secsize, 37866864Sadrian blk + i / dev_bsize); 37966864Sadrian else 38066864Sadrian printf(" %ld,", blk + i / dev_bsize); 38166864Sadrian errs++; 38266864Sadrian } 38366864Sadrian } 38466864Sadrian printf("\n"); 38566864Sadrian if (errs) 38666864Sadrian resolved = 0; 38766864Sadrian return (errs); 38866864Sadrian} 38966864Sadrian 39066864Sadrianvoid 39166864Sadrianbwrite(fd, buf, blk, size) 39266864Sadrian int fd; 39366864Sadrian char *buf; 39466864Sadrian ufs_daddr_t blk; 39566864Sadrian long size; 39666864Sadrian{ 39766864Sadrian int i; 39866864Sadrian char *cp; 39966864Sadrian off_t offset; 40066864Sadrian 40166864Sadrian if (fd < 0) 40266864Sadrian return; 40366864Sadrian offset = blk; 40466864Sadrian offset *= dev_bsize; 40566864Sadrian if (lseek(fd, offset, 0) < 0) 40674556Smckusick rwerror("SEEK BLK", blk); 40766864Sadrian else if (write(fd, buf, (int)size) == size) { 40866864Sadrian fsmodified = 1; 40966864Sadrian return; 41066864Sadrian } 41166864Sadrian resolved = 0; 41274556Smckusick rwerror("WRITE BLK", blk); 41366864Sadrian if (lseek(fd, offset, 0) < 0) 41474556Smckusick rwerror("SEEK BLK", blk); 41566864Sadrian printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:"); 41666864Sadrian for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize) 41766864Sadrian if (write(fd, cp, (int)dev_bsize) != dev_bsize) { 41866864Sadrian (void)lseek(fd, offset + i + dev_bsize, 0); 41966864Sadrian printf(" %ld,", blk + i / dev_bsize); 42066864Sadrian } 42166864Sadrian printf("\n"); 42266864Sadrian return; 42366864Sadrian} 42466864Sadrian 42566864Sadrian/* 42666864Sadrian * allocate a data block with the specified number of fragments 42766864Sadrian */ 42866864Sadrianufs_daddr_t 42966864Sadrianallocblk(frags) 43066864Sadrian long frags; 43166864Sadrian{ 43266864Sadrian int i, j, k, cg, baseblk; 43366864Sadrian struct cg *cgp = &cgrp; 43466864Sadrian 43566864Sadrian if (frags <= 0 || frags > sblock.fs_frag) 43666864Sadrian return (0); 43766864Sadrian for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) { 43866864Sadrian for (j = 0; j <= sblock.fs_frag - frags; j++) { 43966864Sadrian if (testbmap(i + j)) 44066864Sadrian continue; 44166864Sadrian for (k = 1; k < frags; k++) 44266864Sadrian if (testbmap(i + j + k)) 44366864Sadrian break; 44466864Sadrian if (k < frags) { 44566864Sadrian j += k; 44666864Sadrian continue; 44766864Sadrian } 44866864Sadrian cg = dtog(&sblock, i + j); 44966864Sadrian getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize); 45066864Sadrian if (!cg_chkmagic(cgp)) 45166864Sadrian pfatal("CG %d: BAD MAGIC NUMBER\n", cg); 45266864Sadrian baseblk = dtogd(&sblock, i + j); 45366864Sadrian for (k = 0; k < frags; k++) { 45466864Sadrian setbmap(i + j + k); 45566864Sadrian clrbit(cg_blksfree(cgp), baseblk + k); 45666864Sadrian } 45766864Sadrian n_blks += frags; 45866864Sadrian if (frags == sblock.fs_frag) 45966864Sadrian cgp->cg_cs.cs_nbfree--; 46066864Sadrian else 46166864Sadrian cgp->cg_cs.cs_nffree -= frags; 46266864Sadrian cgdirty(); 46366864Sadrian return (i + j); 46466864Sadrian } 46566864Sadrian } 46666864Sadrian return (0); 46766864Sadrian} 46866864Sadrian 46966864Sadrian/* 47066864Sadrian * Free a previously allocated block 47166864Sadrian */ 47266864Sadrianvoid 47366864Sadrianfreeblk(blkno, frags) 47466864Sadrian ufs_daddr_t blkno; 47566864Sadrian long frags; 47666864Sadrian{ 47766864Sadrian struct inodesc idesc; 47866864Sadrian 47966864Sadrian idesc.id_blkno = blkno; 48066864Sadrian idesc.id_numfrags = frags; 48166864Sadrian (void)pass4check(&idesc); 48266864Sadrian} 48366864Sadrian 48466864Sadrian/* 48566864Sadrian * Find a pathname 48666864Sadrian */ 48766864Sadrianvoid 48866864Sadriangetpathname(namebuf, curdir, ino) 48966864Sadrian char *namebuf; 49066864Sadrian ino_t curdir, ino; 49166864Sadrian{ 49266864Sadrian int len; 49366864Sadrian register char *cp; 49466864Sadrian struct inodesc idesc; 49566864Sadrian static int busy = 0; 49666864Sadrian 49766864Sadrian if (curdir == ino && ino == ROOTINO) { 49866864Sadrian (void)strcpy(namebuf, "/"); 49966864Sadrian return; 50066864Sadrian } 50166864Sadrian if (busy || 50266864Sadrian (inoinfo(curdir)->ino_state != DSTATE && 50366864Sadrian inoinfo(curdir)->ino_state != DFOUND)) { 50466864Sadrian (void)strcpy(namebuf, "?"); 50566864Sadrian return; 50666864Sadrian } 50766864Sadrian busy = 1; 50866864Sadrian memset(&idesc, 0, sizeof(struct inodesc)); 50966864Sadrian idesc.id_type = DATA; 51066864Sadrian idesc.id_fix = IGNORE; 51166864Sadrian cp = &namebuf[MAXPATHLEN - 1]; 51266864Sadrian *cp = '\0'; 51366864Sadrian if (curdir != ino) { 51466864Sadrian idesc.id_parent = curdir; 51566864Sadrian goto namelookup; 51666864Sadrian } 51766864Sadrian while (ino != ROOTINO) { 51866864Sadrian idesc.id_number = ino; 51966864Sadrian idesc.id_func = findino; 52066864Sadrian idesc.id_name = ".."; 52166864Sadrian if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) 52266864Sadrian break; 52366864Sadrian namelookup: 52466864Sadrian idesc.id_number = idesc.id_parent; 52566864Sadrian idesc.id_parent = ino; 52666864Sadrian idesc.id_func = findname; 52766864Sadrian idesc.id_name = namebuf; 52866864Sadrian if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0) 52966864Sadrian break; 53066864Sadrian len = strlen(namebuf); 53166864Sadrian cp -= len; 53266864Sadrian memmove(cp, namebuf, (size_t)len); 53366864Sadrian *--cp = '/'; 53466864Sadrian if (cp < &namebuf[MAXNAMLEN]) 53566864Sadrian break; 53666864Sadrian ino = idesc.id_number; 53766864Sadrian } 53866864Sadrian busy = 0; 53966864Sadrian if (ino != ROOTINO) 54066864Sadrian *--cp = '?'; 54166864Sadrian memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp)); 54266864Sadrian} 54366864Sadrian 54466864Sadrianvoid 54566864Sadriancatch(sig) 54666864Sadrian int sig; 54766864Sadrian{ 54866864Sadrian if (!doinglevel2) 54966864Sadrian ckfini(0); 55066864Sadrian exit(12); 55166864Sadrian} 55266864Sadrian 55366864Sadrian/* 55466864Sadrian * When preening, allow a single quit to signal 55566864Sadrian * a special exit after filesystem checks complete 55666864Sadrian * so that reboot sequence may be interrupted. 55766864Sadrian */ 55866864Sadrianvoid 55966864Sadriancatchquit(sig) 56066864Sadrian int sig; 56166864Sadrian{ 56266864Sadrian printf("returning to single-user after filesystem check\n"); 56366864Sadrian returntosingle = 1; 56466864Sadrian (void)signal(SIGQUIT, SIG_DFL); 56566864Sadrian} 56666864Sadrian 56766864Sadrian/* 56866864Sadrian * Ignore a single quit signal; wait and flush just in case. 56966864Sadrian * Used by child processes in preen. 57066864Sadrian */ 57166864Sadrianvoid 57266864Sadrianvoidquit(sig) 57366864Sadrian int sig; 57466864Sadrian{ 57566864Sadrian 57666864Sadrian sleep(1); 57766864Sadrian (void)signal(SIGQUIT, SIG_IGN); 57866864Sadrian (void)signal(SIGQUIT, SIG_DFL); 57966864Sadrian} 58066864Sadrian 58166864Sadrian/* 58266864Sadrian * determine whether an inode should be fixed. 58366864Sadrian */ 58466864Sadrianint 58566864Sadriandofix(idesc, msg) 58666864Sadrian register struct inodesc *idesc; 58766864Sadrian char *msg; 58866864Sadrian{ 58966864Sadrian 59066864Sadrian switch (idesc->id_fix) { 59166864Sadrian 59266864Sadrian case DONTKNOW: 59366864Sadrian if (idesc->id_type == DATA) 59466864Sadrian direrror(idesc->id_number, msg); 59566864Sadrian else 59666864Sadrian pwarn(msg); 59766864Sadrian if (preen) { 59866864Sadrian printf(" (SALVAGED)\n"); 59966864Sadrian idesc->id_fix = FIX; 60066864Sadrian return (ALTERED); 60166864Sadrian } 60266864Sadrian if (reply("SALVAGE") == 0) { 60366864Sadrian idesc->id_fix = NOFIX; 60466864Sadrian return (0); 60566864Sadrian } 60666864Sadrian idesc->id_fix = FIX; 60766864Sadrian return (ALTERED); 60866864Sadrian 60966864Sadrian case FIX: 61066864Sadrian return (ALTERED); 61166864Sadrian 61266864Sadrian case NOFIX: 61366864Sadrian case IGNORE: 61466864Sadrian return (0); 61566864Sadrian 61666864Sadrian default: 61766864Sadrian errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix); 61866864Sadrian } 61966864Sadrian /* NOTREACHED */ 62066864Sadrian return (0); 62166864Sadrian} 62266864Sadrian 62366864Sadrian#if __STDC__ 62466864Sadrian#include <stdarg.h> 62566864Sadrian#else 62666864Sadrian#include <varargs.h> 62766864Sadrian#endif 62866864Sadrian 62966864Sadrian/* 63066864Sadrian * An unexpected inconsistency occured. 63166864Sadrian * Die if preening or filesystem is running with soft dependency protocol, 63266864Sadrian * otherwise just print message and continue. 63366864Sadrian */ 63466864Sadrianvoid 63566864Sadrian#if __STDC__ 63666864Sadrianpfatal(const char *fmt, ...) 63766864Sadrian#else 63866864Sadrianpfatal(fmt, va_alist) 63966864Sadrian char *fmt; 64066864Sadrian va_dcl 64166864Sadrian#endif 64266864Sadrian{ 64366864Sadrian va_list ap; 64466864Sadrian#if __STDC__ 64566864Sadrian va_start(ap, fmt); 64666864Sadrian#else 64766864Sadrian va_start(ap); 64866864Sadrian#endif 64966864Sadrian if (!preen) { 65075927Smckusick (void)vfprintf(stdout, fmt, ap); 65166864Sadrian va_end(ap); 65266864Sadrian if (usedsoftdep) 65375927Smckusick (void)fprintf(stdout, 65466864Sadrian "\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n"); 65575557Smckusick /* 65675557Smckusick * Force foreground fsck to clean up inconsistency. 65775557Smckusick */ 65875557Smckusick if (bkgrdflag) { 65975557Smckusick cmd.value = FS_NEEDSFSCK; 66075557Smckusick cmd.size = 1; 66175557Smckusick if (sysctlbyname("vfs.ffs.setflags", 0, 0, 66275557Smckusick &cmd, sizeof cmd) == -1) 66375557Smckusick pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n"); 66475927Smckusick fprintf(stdout, "CANNOT RUN IN BACKGROUND\n"); 66575557Smckusick ckfini(0); 66675557Smckusick exit(EEXIT); 66775557Smckusick } 66866864Sadrian return; 66966864Sadrian } 67066864Sadrian if (cdevname == NULL) 67166864Sadrian cdevname = "fsck"; 67275927Smckusick (void)fprintf(stdout, "%s: ", cdevname); 67375927Smckusick (void)vfprintf(stdout, fmt, ap); 67475927Smckusick (void)fprintf(stdout, 67566864Sadrian "\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n", 67666864Sadrian cdevname, usedsoftdep ? " SOFT UPDATE " : " "); 67775557Smckusick /* 67875557Smckusick * Force foreground fsck to clean up inconsistency. 67975557Smckusick */ 68075557Smckusick if (bkgrdflag) { 68175557Smckusick cmd.value = FS_NEEDSFSCK; 68275557Smckusick cmd.size = 1; 68375557Smckusick if (sysctlbyname("vfs.ffs.setflags", 0, 0, 68475557Smckusick &cmd, sizeof cmd) == -1) 68575557Smckusick pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n"); 68675557Smckusick } 68766864Sadrian ckfini(0); 68866864Sadrian exit(EEXIT); 68966864Sadrian} 69066864Sadrian 69166864Sadrian/* 69266864Sadrian * Pwarn just prints a message when not preening or running soft dependency 69366864Sadrian * protocol, or a warning (preceded by filename) when preening. 69466864Sadrian */ 69566864Sadrianvoid 69666864Sadrian#if __STDC__ 69766864Sadrianpwarn(const char *fmt, ...) 69866864Sadrian#else 69966864Sadrianpwarn(fmt, va_alist) 70066864Sadrian char *fmt; 70166864Sadrian va_dcl 70266864Sadrian#endif 70366864Sadrian{ 70466864Sadrian va_list ap; 70566864Sadrian#if __STDC__ 70666864Sadrian va_start(ap, fmt); 70766864Sadrian#else 70866864Sadrian va_start(ap); 70966864Sadrian#endif 71066864Sadrian if (preen) 71175927Smckusick (void)fprintf(stdout, "%s: ", cdevname); 71275927Smckusick (void)vfprintf(stdout, fmt, ap); 71366864Sadrian va_end(ap); 71466864Sadrian} 71566864Sadrian 71666864Sadrian/* 71766864Sadrian * Stub for routines from kernel. 71866864Sadrian */ 71966864Sadrianvoid 72066864Sadrian#if __STDC__ 72166864Sadrianpanic(const char *fmt, ...) 72266864Sadrian#else 72366864Sadrianpanic(fmt, va_alist) 72466864Sadrian char *fmt; 72566864Sadrian va_dcl 72666864Sadrian#endif 72766864Sadrian{ 72866864Sadrian va_list ap; 72966864Sadrian#if __STDC__ 73066864Sadrian va_start(ap, fmt); 73166864Sadrian#else 73266864Sadrian va_start(ap); 73366864Sadrian#endif 73466864Sadrian pfatal("INTERNAL INCONSISTENCY:"); 73575927Smckusick (void)vfprintf(stdout, fmt, ap); 73666864Sadrian va_end(ap); 73766864Sadrian exit(EEXIT); 73866864Sadrian} 739