/* $NetBSD: pass1.c,v 1.46 2008/10/12 23:26:12 christos Exp $ */ /* * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #ifndef lint #if 0 static char sccsid[] = "@(#)pass1.c 8.6 (Berkeley) 4/28/95"; #else __RCSID("$NetBSD: pass1.c,v 1.46 2008/10/12 23:26:12 christos Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include "fsck.h" #include "extern.h" #include "fsutil.h" #include "exitvalues.h" static daddr_t badblk; static daddr_t dupblk; static void checkinode(ino_t, struct inodesc *); static ino_t lastino; void pass1(void) { ino_t inumber, inosused, ninosused; size_t inospace; int c; daddr_t i, cgd; struct inodesc idesc; struct cg *cgp = cgrp; struct inostat *info; uint8_t *cp; /* * Set file system reserved blocks in used block map. */ for (c = 0; c < sblock->fs_ncg; c++) { cgd = cgdmin(sblock, c); if (c == 0) i = cgbase(sblock, c); else i = cgsblock(sblock, c); for (; i < cgd; i++) setbmap(i); } i = sblock->fs_csaddr; cgd = i + howmany(sblock->fs_cssize, sblock->fs_fsize); for (; i < cgd; i++) setbmap(i); /* * Find all allocated blocks. */ memset(&idesc, 0, sizeof(struct inodesc)); idesc.id_func = pass1check; n_files = n_blks = 0; for (c = 0; c < sblock->fs_ncg; c++) { inumber = c * sblock->fs_ipg; setinodebuf(inumber); getblk(&cgblk, cgtod(sblock, c), sblock->fs_cgsize); memcpy(cgp, cgblk.b_un.b_cg, sblock->fs_cgsize); if((doswap && !needswap) || (!doswap && needswap)) ffs_cg_swap(cgblk.b_un.b_cg, cgp, sblock); if (is_ufs2) inosused = cgp->cg_initediblk; else inosused = sblock->fs_ipg; if (got_siginfo) { printf("%s: phase 1: cyl group %d of %d (%d%%)\n", cdevname(), c, sblock->fs_ncg, c * 100 / sblock->fs_ncg); got_siginfo = 0; } #ifdef PROGRESS progress_bar(cdevname(), preen ? NULL : "phase 1", c, sblock->fs_ncg); #endif /* PROGRESS */ /* * If we are using soft updates, then we can trust the * cylinder group inode allocation maps to tell us which * inodes are allocated. We will scan the used inode map * to find the inodes that are really in use, and then * read only those inodes in from disk. */ if (preen && usedsoftdep) { if (!cg_chkmagic(cgp, 0)) pfatal("CG %d: BAD MAGIC NUMBER\n", c); cp = &cg_inosused(cgp, 0)[(inosused - 1) / CHAR_BIT]; for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) { if (*cp == 0) continue; for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) { if (*cp & i) break; inosused--; } break; } #ifdef notdef if (inosused < 0) inosused = 0; #endif } /* * Allocate inoinfo structures for the allocated inodes. */ inostathead[c].il_numalloced = inosused; if (inosused == 0) { inostathead[c].il_stat = 0; continue; } inospace = inosused * sizeof(*info); if (inospace / sizeof(*info) != inosused) { pfatal("too many inodes %llu\n", (unsigned long long) inosused); exit(FSCK_EXIT_CHECK_FAILED); } info = malloc(inospace); if (info == NULL) { pfatal("cannot alloc %zu bytes for inoinfo\n", inospace); exit(FSCK_EXIT_CHECK_FAILED); } (void)memset(info, 0, inospace); inostathead[c].il_stat = info; /* * Scan the allocated inodes. */ for (i = 0; i < inosused; i++, inumber++) { if (inumber < ROOTINO) { (void)getnextinode(inumber); continue; } checkinode(inumber, &idesc); } lastino += 1; if (inosused < sblock->fs_ipg || inumber == lastino) continue; /* * If we were not able to determine in advance which inodes * were in use, then reduce the size of the inoinfo structure * to the size necessary to describe the inodes that we * really found. */ if (lastino < (c * sblock->fs_ipg)) ninosused = 0; else ninosused = lastino - (c * sblock->fs_ipg); inostathead[c].il_numalloced = ninosused; if (ninosused == 0) { free(inostathead[c].il_stat); inostathead[c].il_stat = 0; continue; } if (ninosused != inosused) { struct inostat *ninfo; size_t ninospace = ninosused * sizeof(*ninfo); if (ninospace / sizeof(*info) != ninosused) { pfatal("too many inodes %llu\n", (unsigned long long)ninosused); exit(FSCK_EXIT_CHECK_FAILED); } ninfo = realloc(info, ninospace); if (ninfo == NULL) { pfatal("cannot realloc %zu bytes to %zu " "for inoinfo\n", inospace, ninospace); exit(FSCK_EXIT_CHECK_FAILED); } if (ninosused > inosused) (void)memset(&ninfo[inosused], 0, ninospace - inospace); inostathead[c].il_stat = ninfo; } } #ifdef PROGRESS if (!preen) progress_done(); #endif /* PROGRESS */ freeinodebuf(); do_blkswap = 0; /* has been done */ } static void checkinode(ino_t inumber, struct inodesc *idesc) { union dinode *dp; struct zlncnt *zlnp; daddr_t ndb; int j; mode_t mode; u_int64_t size, kernmaxfilesize; int64_t blocks; char symbuf[MAXBSIZE]; struct inostat *info; dp = getnextinode(inumber); info = inoinfo(inumber); mode = iswap16(DIP(dp, mode)) & IFMT; size = iswap64(DIP(dp, size)); if (mode == 0) { if ((is_ufs2 && (memcmp(dp->dp2.di_db, ufs2_zino.di_db, NDADDR * sizeof(int64_t)) || memcmp(dp->dp2.di_ib, ufs2_zino.di_ib, NIADDR * sizeof(int64_t)))) || (!is_ufs2 && (memcmp(dp->dp1.di_db, ufs1_zino.di_db, NDADDR * sizeof(int32_t)) || memcmp(dp->dp1.di_ib, ufs1_zino.di_ib, NIADDR * sizeof(int32_t)))) || mode || size) { pfatal("PARTIALLY ALLOCATED INODE I=%llu", (unsigned long long)inumber); if (reply("CLEAR") == 1) { dp = ginode(inumber); clearinode(dp); inodirty(); } else markclean = 0; } info->ino_state = USTATE; return; } lastino = inumber; /* This should match the file size limit in ffs_mountfs(). */ if (is_ufs2) kernmaxfilesize = sblock->fs_maxfilesize; else kernmaxfilesize = (u_int64_t)0x80000000 * sblock->fs_bsize - 1; if (size > kernmaxfilesize || size + sblock->fs_bsize - 1 < size || (mode == IFDIR && size > MAXDIRSIZE)) { if (debug) printf("bad size %llu:",(unsigned long long)size); goto unknown; } if (!preen && mode == IFMT && reply("HOLD BAD BLOCK") == 1) { dp = ginode(inumber); DIP_SET(dp, size, iswap64(sblock->fs_fsize)); size = sblock->fs_fsize; DIP_SET(dp, mode, iswap16(IFREG|0600)); inodirty(); } ndb = howmany(size, sblock->fs_bsize); if (ndb < 0) { if (debug) printf("bad size %llu ndb %lld:", (unsigned long long)size, (long long)ndb); goto unknown; } if (mode == IFBLK || mode == IFCHR) ndb++; if (mode == IFLNK) { /* * Note that the old fastlink format always had di_blocks set * to 0. Other than that we no longer use the `spare' field * (which is now the extended uid) for sanity checking, the * new format is the same as the old. We simply ignore the * conversion altogether. - mycroft, 19MAY1994 */ if (!is_ufs2 && doinglevel2 && size > 0 && size < MAXSYMLINKLEN_UFS1 && DIP(dp, blocks) != 0) { if (bread(fsreadfd, symbuf, fsbtodb(sblock, iswap32(DIP(dp, db[0]))), (long)secsize) != 0) errexit("cannot read symlink"); if (debug) { symbuf[size] = 0; printf("convert symlink %llu(%s) " "of size %lld\n", (unsigned long long)inumber, symbuf, (unsigned long long)size); } dp = ginode(inumber); memmove(dp->dp1.di_db, symbuf, (long)size); DIP_SET(dp, blocks, 0); inodirty(); } /* * Fake ndb value so direct/indirect block checks below * will detect any garbage after symlink string. */ if ((sblock->fs_maxsymlinklen < 0) || (size < sblock->fs_maxsymlinklen) || (isappleufs && (size < APPLEUFS_MAXSYMLINKLEN)) || (sblock->fs_maxsymlinklen == 0 && DIP(dp, blocks) == 0)) { if (is_ufs2) ndb = howmany(size, sizeof(int64_t)); else ndb = howmany(size, sizeof(int32_t)); if (ndb > NDADDR) { j = ndb - NDADDR; for (ndb = 1; j > 1; j--) ndb *= NINDIR(sblock); ndb += NDADDR; } } } if (ndb < NDADDR) { for (j = ndb; j < NDADDR; j++) if (DIP(dp, db[j]) != 0) { if (debug) { if (!is_ufs2) printf("bad direct addr ix %d: %d [ndb %lld]\n", j, iswap32(dp->dp1.di_db[j]), (long long)ndb); else printf("bad direct addr ix %d: %lld [ndb %lld]\n", j, (long long)iswap64(dp->dp2.di_db[j]), (long long)ndb); } goto unknown; } } for (j = 0, ndb -= NDADDR; ndb > 0; j++) ndb /= NINDIR(sblock); for (; j < NIADDR; j++) if (DIP(dp, ib[j]) != 0) { if (debug) { if (!is_ufs2) printf("bad indirect addr: %d\n", iswap32(dp->dp1.di_ib[j])); else printf("bad indirect addr: %lld\n", (long long)iswap64(dp->dp2.di_ib[j])); } goto unknown; } if (ftypeok(dp) == 0) goto unknown; n_files++; info->ino_linkcnt = iswap16(DIP(dp, nlink)); if (info->ino_linkcnt <= 0) { zlnp = (struct zlncnt *)malloc(sizeof *zlnp); if (zlnp == NULL) { markclean = 0; pfatal("LINK COUNT TABLE OVERFLOW"); if (reply("CONTINUE") == 0) { ckfini(); exit(FSCK_EXIT_CHECK_FAILED); } } else { zlnp->zlncnt = inumber; zlnp->next = zlnhead; zlnhead = zlnp; } } if (mode == IFDIR) { if (size == 0) info->ino_state = DCLEAR; else info->ino_state = DSTATE; cacheino(dp, inumber); countdirs++; } else info->ino_state = FSTATE; info->ino_type = IFTODT(mode); if (!is_ufs2 && doinglevel2 && (iswap16(dp->dp1.di_ouid) != (u_short)-1 || iswap16(dp->dp1.di_ogid) != (u_short)-1)) { dp = ginode(inumber); dp->dp1.di_uid = iswap32(iswap16(dp->dp1.di_ouid)); dp->dp1.di_ouid = iswap16(-1); dp->dp1.di_gid = iswap32(iswap16(dp->dp1.di_ogid)); dp->dp1.di_ogid = iswap16(-1); inodirty(); } badblk = dupblk = 0; idesc->id_number = inumber; if (iswap32(DIP(dp, flags)) & SF_SNAPSHOT) idesc->id_type = SNAP; else idesc->id_type = ADDR; (void)ckinode(dp, idesc); #ifdef notyet if (is_ufs2 && iswap32(dp->dp2.di_extsize) > 0) { int ret, offset; idesc->id_type = ADDR; ndb = howmany(iswap32(dp->dp2.di_extsize), sblock->fs_bsize); for (j = 0; j < NXADDR; j++) { if (--ndb == 0 && (offset = blkoff(sblock, iswap32(dp->dp2.di_extsize))) != 0) idesc->id_numfrags = numfrags(sblock, fragroundup(sblock, offset)); else idesc->id_numfrags = sblock->fs_frag; if (dp->dp2.di_extb[j] == 0) continue; idesc->id_blkno = iswap64(dp->dp2.di_extb[j]); ret = (*idesc->id_func)(idesc); if (ret & STOP) break; } } #endif idesc->id_entryno *= btodb(sblock->fs_fsize); if (is_ufs2) blocks = iswap64(dp->dp2.di_blocks); else blocks = iswap32(dp->dp1.di_blocks); if (blocks != idesc->id_entryno) { pwarn("INCORRECT BLOCK COUNT I=%llu (%lld should be %lld)", (unsigned long long)inumber, (long long)blocks, (long long)idesc->id_entryno); if (preen) printf(" (CORRECTED)\n"); else if (reply("CORRECT") == 0) { markclean = 0; return; } dp = ginode(inumber); if (is_ufs2) dp->dp2.di_blocks = iswap64(idesc->id_entryno); else dp->dp1.di_blocks = iswap32((int32_t)idesc->id_entryno); inodirty(); } return; unknown: pfatal("UNKNOWN FILE TYPE I=%llu", (unsigned long long)inumber); info->ino_state = FCLEAR; if (reply("CLEAR") == 1) { info->ino_state = USTATE; dp = ginode(inumber); clearinode(dp); inodirty(); } else markclean = 0; } int pass1check(struct inodesc *idesc) { int res = KEEPON; int anyout, nfrags; daddr_t blkno = idesc->id_blkno; struct dups *dlp; struct dups *new; if (idesc->id_type == SNAP) { if (blkno == BLK_NOCOPY || blkno == BLK_SNAP) return (KEEPON); } if ((anyout = chkrange(blkno, idesc->id_numfrags)) != 0) { blkerror(idesc->id_number, "BAD", blkno); if (badblk++ >= MAXBAD) { pwarn("EXCESSIVE BAD BLKS I=%llu", (unsigned long long)idesc->id_number); if (preen) printf(" (SKIPPING)\n"); else if (reply("CONTINUE") == 0) { markclean = 0; ckfini(); exit(FSCK_EXIT_CHECK_FAILED); } return (STOP); } } for (nfrags = idesc->id_numfrags; nfrags > 0; blkno++, nfrags--) { if (anyout && chkrange(blkno, 1)) { res = SKIP; } else if (!testbmap(blkno)) { n_blks++; setbmap(blkno); } else { blkerror(idesc->id_number, "DUP", blkno); if (dupblk++ >= MAXDUP) { pwarn("EXCESSIVE DUP BLKS I=%llu", (unsigned long long)idesc->id_number); if (preen) printf(" (SKIPPING)\n"); else if (reply("CONTINUE") == 0) { markclean = 0; ckfini(); exit(FSCK_EXIT_CHECK_FAILED); } return (STOP); } new = (struct dups *)malloc(sizeof(struct dups)); if (new == NULL) { markclean = 0; pfatal("DUP TABLE OVERFLOW."); if (reply("CONTINUE") == 0) { markclean = 0; ckfini(); exit(FSCK_EXIT_CHECK_FAILED); } return (STOP); } new->dup = blkno; if (muldup == 0) { duplist = muldup = new; new->next = 0; } else { new->next = muldup->next; muldup->next = new; } for (dlp = duplist; dlp != muldup; dlp = dlp->next) if (dlp->dup == blkno) break; if (dlp == muldup && dlp->dup != blkno) muldup = new; } /* * count the number of blocks found in id_entryno */ idesc->id_entryno++; } return (res); }