pass1.c revision 72525
128328Ssos/* 2229784Suqs * Copyright (c) 1980, 1986, 1993 328328Ssos * The Regents of the University of California. All rights reserved. 428328Ssos * 528328Ssos * Redistribution and use in source and binary forms, with or without 628328Ssos * modification, are permitted provided that the following conditions 728328Ssos * are met: 828328Ssos * 1. Redistributions of source code must retain the above copyright 928328Ssos * notice, this list of conditions and the following disclaimer. 1028328Ssos * 2. Redistributions in binary form must reproduce the above copyright 1128328Ssos * notice, this list of conditions and the following disclaimer in the 1228328Ssos * documentation and/or other materials provided with the distribution. 1328328Ssos * 3. All advertising materials mentioning features or use of this software 1428328Ssos * must display the following acknowledgement: 1597748Sschweikh * This product includes software developed by the University of 1628328Ssos * California, Berkeley and its contributors. 1728328Ssos * 4. Neither the name of the University nor the names of its contributors 1828328Ssos * may be used to endorse or promote products derived from this software 1928328Ssos * without specific prior written permission. 2028328Ssos * 2128328Ssos * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2228328Ssos * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2328328Ssos * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2428328Ssos * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2528328Ssos * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2628328Ssos * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2728328Ssos * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2828328Ssos * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2983551Sdillon * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3083551Sdillon * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3183551Sdillon * SUCH DAMAGE. 3228328Ssos */ 3328328Ssos 3428328Ssos#ifndef lint 3528328Ssos#if 0 3628328Ssosstatic const char sccsid[] = "@(#)pass1.c 8.6 (Berkeley) 4/28/95"; 3728328Ssos#endif 3866834Sphkstatic const char rcsid[] = 3966834Sphk "$FreeBSD: head/sbin/fsck_ffs/pass1.c 72525 2001-02-15 22:26:21Z tegge $"; 4066834Sphk#endif /* not lint */ 4128328Ssos 4228328Ssos#include <sys/param.h> 4370991Snsouch#include <sys/stat.h> 4470991Snsouch 4553013Syokota#include <ufs/ufs/dinode.h> 4653013Syokota#include <ufs/ufs/dir.h> 4753013Syokota#include <ufs/ffs/fs.h> 4828328Ssos 4953013Syokota#include <err.h> 5053013Syokota#include <string.h> 5153013Syokota 5228328Ssos#include "fsck.h" 5328328Ssos 5428328Ssosstatic ufs_daddr_t badblk; 5553013Syokotastatic ufs_daddr_t dupblk; 5653013Syokotastatic ino_t lastino; /* last inode in use */ 5728328Ssos 5880270Syokotastatic void checkinode __P((ino_t inumber, struct inodesc *)); 5928328Ssos 6053013Syokotavoid 6130044Ssospass1() 6276852Ssobomax{ 6328328Ssos u_int8_t *cp; 6428328Ssos ino_t inumber; 6528328Ssos int c, i, cgd, inosused; 6628328Ssos struct inostat *info; 6728328Ssos struct inodesc idesc; 6828328Ssos 6930044Ssos /* 7030044Ssos * Set file system reserved blocks in used block map. 7153013Syokota */ 7280270Syokota for (c = 0; c < sblock.fs_ncg; c++) { 7380270Syokota cgd = cgdmin(&sblock, c); 7453013Syokota if (c == 0) { 7553013Syokota i = cgbase(&sblock, c); 7653013Syokota } else 7753013Syokota i = cgsblock(&sblock, c); 7853013Syokota for (; i < cgd; i++) 7953013Syokota setbmap(i); 8050483Syokota } 8153013Syokota i = sblock.fs_csaddr; 8250141Syokota cgd = i + howmany(sblock.fs_cssize, sblock.fs_fsize); 8350141Syokota for (; i < cgd; i++) 8450141Syokota setbmap(i); 8550141Syokota 8650141Syokota /* 8776852Ssobomax * Find all allocated blocks. 8876852Ssobomax */ 8950141Syokota memset(&idesc, 0, sizeof(struct inodesc)); 9050141Syokota idesc.id_func = pass1check; 9150141Syokota n_files = n_blks = 0; 9250141Syokota for (c = 0; c < sblock.fs_ncg; c++) { 9350141Syokota inumber = c * sblock.fs_ipg; 9450141Syokota setinodebuf(inumber); 9528328Ssos inosused = sblock.fs_ipg; 9628328Ssos if (got_siginfo) { 9728328Ssos printf("%s: phase 1: cyl group %d of %d (%d%%)\n", 9828328Ssos cdevname, c, sblock.fs_ncg, 9953013Syokota c * 100 / sblock.fs_ncg); 10053013Syokota got_siginfo = 0; 10153013Syokota } 10228328Ssos /* 10353013Syokota * If we are using soft updates, then we can trust the 10430044Ssos * cylinder group inode allocation maps to tell us which 10528328Ssos * inodes are allocated. We will scan the used inode map 10628328Ssos * to find the inodes that are really in use, and then 10728328Ssos * read only those inodes in from disk. 108130245Sstefanf */ 10928328Ssos if (preen && usedsoftdep) { 11080270Syokota getblk(&cgblk, cgtod(&sblock, c), sblock.fs_cgsize); 11180270Syokota if (!cg_chkmagic(&cgrp)) 11280270Syokota pfatal("CG %d: BAD MAGIC NUMBER\n", c); 11380270Syokota cp = &cg_inosused(&cgrp)[(sblock.fs_ipg - 1) / NBBY]; 11480270Syokota for ( ; inosused > 0; inosused -= NBBY, cp--) { 11580270Syokota if (*cp == 0) 11628328Ssos continue; 11728328Ssos for (i = 1 << (NBBY - 1); i > 0; i >>= 1) { 11828328Ssos if (*cp & i) 119130245Sstefanf break; 12028328Ssos inosused--; 12128328Ssos } 12228328Ssos break; 12328328Ssos } 12428328Ssos if (inosused < 0) 12528328Ssos inosused = 0; 12628328Ssos } 12728328Ssos /* 12828328Ssos * Allocate inoinfo structures for the allocated inodes. 12928328Ssos */ 13028328Ssos inostathead[c].il_numalloced = inosused; 13128328Ssos if (inosused == 0) { 13228328Ssos inostathead[c].il_stat = 0; 13353013Syokota continue; 13428328Ssos } 13553013Syokota info = calloc((unsigned)inosused, sizeof(struct inostat)); 13653013Syokota if (info == NULL) 13753013Syokota pfatal("cannot alloc %u bytes for inoinfo\n", 13828328Ssos (unsigned)(sizeof(struct inostat) * inosused)); 13928328Ssos inostathead[c].il_stat = info; 14050483Syokota /* 14128328Ssos * Scan the allocated inodes. 14228328Ssos */ 14380270Syokota for (i = 0; i < inosused; i++, inumber++) { 14428328Ssos if (inumber < ROOTINO) { 14528328Ssos (void)getnextinode(inumber); 14628328Ssos continue; 14780270Syokota } 14828328Ssos checkinode(inumber, &idesc); 14953013Syokota } 15053013Syokota lastino += 1; 15153013Syokota if (inosused < sblock.fs_ipg || inumber == lastino) 15253013Syokota continue; 15353013Syokota /* 15453013Syokota * If we were not able to determine in advance which inodes 15553013Syokota * were in use, then reduce the size of the inoinfo structure 15653013Syokota * to the size necessary to describe the inodes that we 15728328Ssos * really found. 15871643Ssobomax */ 15976852Ssobomax inosused = lastino - (c * sblock.fs_ipg); 16076852Ssobomax if (inosused < 0) 16176852Ssobomax inosused = 0; 16271643Ssobomax inostathead[c].il_numalloced = inosused; 16376852Ssobomax if (inosused == 0) { 16471643Ssobomax free(inostathead[c].il_stat); 16553013Syokota inostathead[c].il_stat = 0; 16653013Syokota continue; 16753013Syokota } 16828328Ssos info = calloc((unsigned)inosused, sizeof(struct inostat)); 16953013Syokota if (info == NULL) 17053013Syokota pfatal("cannot alloc %u bytes for inoinfo\n", 17153013Syokota (unsigned)(sizeof(struct inostat) * inosused)); 17228328Ssos memmove(info, inostathead[c].il_stat, inosused * sizeof(*info)); 17328328Ssos free(inostathead[c].il_stat); 17453013Syokota inostathead[c].il_stat = info; 17553013Syokota } 17653013Syokota freeinodebuf(); 17753013Syokota} 17853013Syokota 17953013Syokotastatic void 18053013Syokotacheckinode(inumber, idesc) 18153013Syokota ino_t inumber; 18253013Syokota register struct inodesc *idesc; 18353013Syokota{ 18453013Syokota register struct dinode *dp; 18553013Syokota struct zlncnt *zlnp; 18653013Syokota u_int64_t kernmaxfilesize; 18753013Syokota ufs_daddr_t ndb, j; 18828328Ssos mode_t mode; 18928328Ssos char *symbuf; 19053013Syokota 19153013Syokota dp = getnextinode(inumber); 19253013Syokota mode = dp->di_mode & IFMT; 19353013Syokota if (mode == 0) { 19453013Syokota if (memcmp(dp->di_db, zino.di_db, 19553013Syokota NDADDR * sizeof(ufs_daddr_t)) || 19628328Ssos memcmp(dp->di_ib, zino.di_ib, 19771623Snsouch NIADDR * sizeof(ufs_daddr_t)) || 19828328Ssos dp->di_mode || dp->di_size) { 19953013Syokota pfatal("PARTIALLY ALLOCATED INODE I=%lu", inumber); 20028328Ssos if (reply("CLEAR") == 1) { 20171623Snsouch dp = ginode(inumber); 20228328Ssos clearinode(dp); 20370991Snsouch inodirty(); 20470991Snsouch } 20570991Snsouch } 20670991Snsouch inoinfo(inumber)->ino_state = USTATE; 20770991Snsouch return; 20870991Snsouch } 20970991Snsouch lastino = inumber; 21070991Snsouch /* This should match the file size limit in ffs_mountfs(). */ 21170991Snsouch kernmaxfilesize = (u_int64_t)0x40000000 * sblock.fs_bsize - 1; 21270991Snsouch if (dp->di_size > kernmaxfilesize || 21370991Snsouch dp->di_size > sblock.fs_maxfilesize || 21470991Snsouch (mode == IFDIR && dp->di_size > MAXDIRSIZE)) { 21570991Snsouch if (debug) 21670991Snsouch printf("bad size %qu:", dp->di_size); 21770991Snsouch goto unknown; 21870991Snsouch } 21970991Snsouch if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) { 22070991Snsouch dp = ginode(inumber); 22170991Snsouch dp->di_size = sblock.fs_fsize; 22228328Ssos dp->di_mode = IFREG|0600; 22328328Ssos inodirty(); 22453013Syokota } 22528328Ssos if ((mode == IFBLK || mode == IFCHR || mode == IFIFO || 22628328Ssos mode == IFSOCK) && dp->di_size != 0) { 22728328Ssos if (debug) 22828328Ssos printf("bad special-file size %qu:", dp->di_size); 22953013Syokota goto unknown; 23053013Syokota } 23153013Syokota if ((mode == IFBLK || mode == IFCHR) && (dev_t)dp->di_rdev == NODEV) { 23228328Ssos if (debug) 23353013Syokota printf("bad special-file rdev NODEV:"); 23453013Syokota goto unknown; 23553013Syokota } 23653013Syokota ndb = howmany(dp->di_size, sblock.fs_bsize); 23728328Ssos if (ndb < 0) { 23853013Syokota if (debug) 23953013Syokota printf("bad size %qu ndb %d:", 24053013Syokota dp->di_size, ndb); 24153013Syokota goto unknown; 24253013Syokota } 24353013Syokota if (mode == IFBLK || mode == IFCHR) 24453013Syokota ndb++; 24553013Syokota if (mode == IFLNK) { 24653013Syokota if (doinglevel2 && 24753013Syokota dp->di_size > 0 && dp->di_size < MAXSYMLINKLEN && 24853013Syokota dp->di_blocks != 0) { 24953013Syokota symbuf = alloca(secsize); 25053013Syokota if (bread(fsreadfd, symbuf, 25153013Syokota fsbtodb(&sblock, dp->di_db[0]), 25253013Syokota (long)secsize) != 0) 25353013Syokota errx(EEXIT, "cannot read symlink"); 25453013Syokota if (debug) { 25553013Syokota symbuf[dp->di_size] = 0; 25653013Syokota printf("convert symlink %lu(%s) of size %ld\n", 25753013Syokota (u_long)inumber, symbuf, (long)dp->di_size); 25853013Syokota } 25953013Syokota dp = ginode(inumber); 26053013Syokota memmove(dp->di_shortlink, symbuf, (long)dp->di_size); 26153013Syokota dp->di_blocks = 0; 26253013Syokota inodirty(); 26353013Syokota } 26453013Syokota /* 26553013Syokota * Fake ndb value so direct/indirect block checks below 26653013Syokota * will detect any garbage after symlink string. 26753013Syokota */ 26870991Snsouch if (dp->di_size < sblock.fs_maxsymlinklen) { 26970991Snsouch ndb = howmany(dp->di_size, sizeof(ufs_daddr_t)); 27053013Syokota if (ndb > NDADDR) { 27170991Snsouch j = ndb - NDADDR; 27270991Snsouch for (ndb = 1; j > 1; j--) 27353013Syokota ndb *= NINDIR(&sblock); 27470991Snsouch ndb += NDADDR; 27570991Snsouch } 27670991Snsouch } 27770991Snsouch } 27870991Snsouch for (j = ndb; j < NDADDR; j++) 27970991Snsouch if (dp->di_db[j] != 0) { 28070991Snsouch if (debug) 28170991Snsouch printf("bad direct addr: %ld\n", 28270991Snsouch (long)dp->di_db[j]); 28370991Snsouch goto unknown; 28470991Snsouch } 28570991Snsouch for (j = 0, ndb -= NDADDR; ndb > 0; j++) 28670991Snsouch ndb /= NINDIR(&sblock); 28770991Snsouch for (; j < NIADDR; j++) 28853013Syokota if (dp->di_ib[j] != 0) { 28953013Syokota if (debug) 29028328Ssos printf("bad indirect addr: %ld\n", 29153013Syokota (long)dp->di_ib[j]); 29228328Ssos goto unknown; 29353013Syokota } 29453013Syokota if (ftypeok(dp) == 0) 29553013Syokota goto unknown; 29653013Syokota n_files++; 29753013Syokota inoinfo(inumber)->ino_linkcnt = dp->di_nlink; 29853013Syokota if (dp->di_nlink <= 0) { 29953013Syokota zlnp = (struct zlncnt *)malloc(sizeof *zlnp); 30028328Ssos if (zlnp == NULL) { 30153013Syokota pfatal("LINK COUNT TABLE OVERFLOW"); 30253013Syokota if (reply("CONTINUE") == 0) { 30353013Syokota ckfini(0); 30428328Ssos exit(EEXIT); 30553013Syokota } 30628328Ssos } else { 30753013Syokota zlnp->zlncnt = inumber; 30828328Ssos zlnp->next = zlnhead; 30928328Ssos zlnhead = zlnp; 31028328Ssos } 31153013Syokota } 31253013Syokota if (mode == IFDIR) { 31353013Syokota if (dp->di_size == 0) 31453013Syokota inoinfo(inumber)->ino_state = DCLEAR; 31553013Syokota else 31653013Syokota inoinfo(inumber)->ino_state = DSTATE; 31753013Syokota cacheino(dp, inumber); 31828328Ssos countdirs++; 31928328Ssos } else 32028328Ssos inoinfo(inumber)->ino_state = FSTATE; 32128328Ssos inoinfo(inumber)->ino_type = IFTODT(mode); 32228328Ssos if (doinglevel2 && 32353013Syokota (dp->di_ouid != (u_short)-1 || dp->di_ogid != (u_short)-1)) { 32428328Ssos dp = ginode(inumber); 32553013Syokota dp->di_uid = dp->di_ouid; 32628328Ssos dp->di_ouid = -1; 32728328Ssos dp->di_gid = dp->di_ogid; 32853013Syokota dp->di_ogid = -1; 32928328Ssos inodirty(); 33028328Ssos } 33128328Ssos badblk = dupblk = 0; 33228328Ssos idesc->id_number = inumber; 33328328Ssos if (dp->di_flags & SF_SNAPSHOT) 33428328Ssos idesc->id_type = SNAP; 33580270Syokota else 33680270Syokota idesc->id_type = ADDR; 33780270Syokota (void)ckinode(dp, idesc); 33880270Syokota idesc->id_entryno *= btodb(sblock.fs_fsize); 33950483Syokota if (dp->di_blocks != idesc->id_entryno) { 34053013Syokota pwarn("INCORRECT BLOCK COUNT I=%lu (%ld should be %ld)", 34153013Syokota inumber, dp->di_blocks, idesc->id_entryno); 34228328Ssos if (preen) 34328328Ssos printf(" (CORRECTED)\n"); 34428328Ssos else if (reply("CORRECT") == 0) 34528328Ssos return; 34628328Ssos dp = ginode(inumber); 34728328Ssos dp->di_blocks = idesc->id_entryno; 34828328Ssos inodirty(); 34953013Syokota } 35053013Syokota return; 35153013Syokotaunknown: 35253013Syokota pfatal("UNKNOWN FILE TYPE I=%lu", inumber); 35353013Syokota inoinfo(inumber)->ino_state = FCLEAR; 35453013Syokota if (reply("CLEAR") == 1) { 35553013Syokota inoinfo(inumber)->ino_state = USTATE; 35653013Syokota dp = ginode(inumber); 35753013Syokota clearinode(dp); 35853013Syokota inodirty(); 35953013Syokota } 36053013Syokota} 36153013Syokota 36253013Syokotaint 36353013Syokotapass1check(idesc) 36453013Syokota register struct inodesc *idesc; 36528328Ssos{ 36653013Syokota int res = KEEPON; 36753013Syokota int anyout, nfrags; 36853013Syokota ufs_daddr_t blkno = idesc->id_blkno; 36953013Syokota register struct dups *dlp; 37053013Syokota struct dups *new; 37153013Syokota 37253013Syokota if (idesc->id_type == SNAP) { 37328328Ssos if (blkno == BLK_NOCOPY) 37453013Syokota return (KEEPON); 37553013Syokota if (idesc->id_number == cursnapshot) { 37653013Syokota if (blkno == blkstofrags(&sblock, idesc->id_lbn)) 37770991Snsouch return (KEEPON); 37870991Snsouch if (blkno == BLK_SNAP) { 37970991Snsouch blkno = blkstofrags(&sblock, idesc->id_lbn); 38070991Snsouch idesc->id_entryno -= idesc->id_numfrags; 38170991Snsouch } 38270991Snsouch } else { 38370991Snsouch if (blkno == BLK_SNAP) 38470991Snsouch return (KEEPON); 38570991Snsouch } 38670991Snsouch } 38770991Snsouch if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) { 38870991Snsouch blkerror(idesc->id_number, "BAD", blkno); 38970991Snsouch if (badblk++ >= MAXBAD) { 39070991Snsouch pwarn("EXCESSIVE BAD BLKS I=%lu", 39170991Snsouch idesc->id_number); 39270991Snsouch if (preen) 39370991Snsouch printf(" (SKIPPING)\n"); 39470991Snsouch else if (reply("CONTINUE") == 0) { 39570991Snsouch ckfini(0); 39670991Snsouch exit(EEXIT); 39770991Snsouch } 39870991Snsouch return (STOP); 39970991Snsouch } 40070991Snsouch } 40128328Ssos for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { 40253013Syokota if (anyout && chkrange(blkno, 1)) { 40328328Ssos res = SKIP; 40428328Ssos } else if (!testbmap(blkno)) { 40553013Syokota n_blks++; 40653013Syokota setbmap(blkno); 40753013Syokota } else { 40853013Syokota blkerror(idesc->id_number, "DUP", blkno); 40953013Syokota if (dupblk++ >= MAXDUP) { 41053013Syokota pwarn("EXCESSIVE DUP BLKS I=%lu", 41153013Syokota idesc->id_number); 41253013Syokota if (preen) 41353013Syokota printf(" (SKIPPING)\n"); 41453013Syokota else if (reply("CONTINUE") == 0) { 41553013Syokota ckfini(0); 41653013Syokota exit(EEXIT); 41753013Syokota } 41853013Syokota return (STOP); 41953013Syokota } 42053013Syokota new = (struct dups *)malloc(sizeof(struct dups)); 42153013Syokota if (new == NULL) { 42253013Syokota pfatal("DUP TABLE OVERFLOW."); 42353013Syokota if (reply("CONTINUE") == 0) { 42453013Syokota ckfini(0); 42553013Syokota exit(EEXIT); 42653013Syokota } 42753013Syokota return (STOP); 42853013Syokota } 42953013Syokota new->dup = blkno; 43053013Syokota if (muldup == 0) { 43153013Syokota duplist = muldup = new; 43253013Syokota new->next = 0; 43353013Syokota } else { 43453013Syokota new->next = muldup->next; 43553013Syokota muldup->next = new; 43653013Syokota } 43753013Syokota for (dlp = duplist; dlp != muldup; dlp = dlp->next) 43853013Syokota if (dlp->dup == blkno) 43953013Syokota break; 44053013Syokota if (dlp == muldup && dlp->dup != blkno) 44153013Syokota muldup = new; 44253013Syokota } 44370991Snsouch /* 44470991Snsouch * count the number of blocks found in id_entryno 44570991Snsouch */ 44670991Snsouch idesc->id_entryno++; 44770991Snsouch } 44870991Snsouch return (res); 44953013Syokota} 45053013Syokota