18fae3551SRodney W. Grimes /*- 28fae3551SRodney W. Grimes * Copyright (c) 1980, 1988, 1991, 1993 38fae3551SRodney W. Grimes * The Regents of the University of California. All rights reserved. 48fae3551SRodney W. Grimes * 58fae3551SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 68fae3551SRodney W. Grimes * modification, are permitted provided that the following conditions 78fae3551SRodney W. Grimes * are met: 88fae3551SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 98fae3551SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 108fae3551SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 118fae3551SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 128fae3551SRodney W. Grimes * documentation and/or other materials provided with the distribution. 138fae3551SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 148fae3551SRodney W. Grimes * must display the following acknowledgement: 158fae3551SRodney W. Grimes * This product includes software developed by the University of 168fae3551SRodney W. Grimes * California, Berkeley and its contributors. 178fae3551SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 188fae3551SRodney W. Grimes * may be used to endorse or promote products derived from this software 198fae3551SRodney W. Grimes * without specific prior written permission. 208fae3551SRodney W. Grimes * 218fae3551SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 228fae3551SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 238fae3551SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 248fae3551SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 258fae3551SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 268fae3551SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 278fae3551SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 288fae3551SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 298fae3551SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 308fae3551SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 318fae3551SRodney W. Grimes * SUCH DAMAGE. 328fae3551SRodney W. Grimes */ 338fae3551SRodney W. Grimes 348fae3551SRodney W. Grimes #ifndef lint 357580ffbbSPhilippe Charnier #if 0 36a37c38b8SPeter Wemm static char sccsid[] = "@(#)traverse.c 8.7 (Berkeley) 6/15/95"; 377580ffbbSPhilippe Charnier #endif 387580ffbbSPhilippe Charnier static const char rcsid[] = 397f3dea24SPeter Wemm "$FreeBSD$"; 408fae3551SRodney W. Grimes #endif /* not lint */ 418fae3551SRodney W. Grimes 428fae3551SRodney W. Grimes #include <sys/param.h> 438fae3551SRodney W. Grimes #include <sys/stat.h> 448fae3551SRodney W. Grimes 458fae3551SRodney W. Grimes #include <ufs/ufs/dir.h> 468fae3551SRodney W. Grimes #include <ufs/ufs/dinode.h> 47a37c38b8SPeter Wemm #include <ufs/ffs/fs.h> 488fae3551SRodney W. Grimes 498fae3551SRodney W. Grimes #include <protocols/dumprestore.h> 508fae3551SRodney W. Grimes 518fae3551SRodney W. Grimes #include <ctype.h> 5237736675SWarner Losh #include <errno.h> 53617dbd3cSIan Dowse #include <inttypes.h> 5489fdc4e1SMike Barcroft #include <limits.h> 55617dbd3cSIan Dowse #include <stdio.h> 561c85e6a3SKirk McKusick #include <stdlib.h> 57617dbd3cSIan Dowse #include <string.h> 58617dbd3cSIan Dowse #include <timeconv.h> 59617dbd3cSIan Dowse #include <unistd.h> 608fae3551SRodney W. Grimes 618fae3551SRodney W. Grimes #include "dump.h" 628fae3551SRodney W. Grimes 631c85e6a3SKirk McKusick union dinode { 641c85e6a3SKirk McKusick struct ufs1_dinode dp1; 651c85e6a3SKirk McKusick struct ufs2_dinode dp2; 661c85e6a3SKirk McKusick }; 671c85e6a3SKirk McKusick #define DIP(dp, field) \ 681c85e6a3SKirk McKusick ((sblock->fs_magic == FS_UFS1_MAGIC) ? \ 691c85e6a3SKirk McKusick (dp)->dp1.field : (dp)->dp2.field) 701c85e6a3SKirk McKusick 718fae3551SRodney W. Grimes #define HASDUMPEDFILE 0x1 728fae3551SRodney W. Grimes #define HASSUBDIRS 0x2 738fae3551SRodney W. Grimes 741c85e6a3SKirk McKusick static int dirindir(ino_t ino, ufs2_daddr_t blkno, int level, long *size, 752db673abSWarner Losh long *tapesize, int nodump); 761c85e6a3SKirk McKusick static void dmpindir(ino_t ino, ufs2_daddr_t blk, int level, off_t *size); 771c85e6a3SKirk McKusick static int searchdir(ino_t ino, ufs2_daddr_t blkno, long size, long filesize, 782db673abSWarner Losh long *tapesize, int nodump); 798fae3551SRodney W. Grimes 808fae3551SRodney W. Grimes /* 818fae3551SRodney W. Grimes * This is an estimation of the number of TP_BSIZE blocks in the file. 828fae3551SRodney W. Grimes * It estimates the number of blocks in files with holes by assuming 838fae3551SRodney W. Grimes * that all of the blocks accounted for by di_blocks are data blocks 848fae3551SRodney W. Grimes * (when some of the blocks are usually used for indirect pointers); 858fae3551SRodney W. Grimes * hence the estimate may be high. 868fae3551SRodney W. Grimes */ 878fae3551SRodney W. Grimes long 881c85e6a3SKirk McKusick blockest(union dinode *dp) 898fae3551SRodney W. Grimes { 908fae3551SRodney W. Grimes long blkest, sizeest; 918fae3551SRodney W. Grimes 928fae3551SRodney W. Grimes /* 938fae3551SRodney W. Grimes * dp->di_size is the size of the file in bytes. 948fae3551SRodney W. Grimes * dp->di_blocks stores the number of sectors actually in the file. 958fae3551SRodney W. Grimes * If there are more sectors than the size would indicate, this just 968fae3551SRodney W. Grimes * means that there are indirect blocks in the file or unused 978fae3551SRodney W. Grimes * sectors in the last file block; we can safely ignore these 988fae3551SRodney W. Grimes * (blkest = sizeest below). 998fae3551SRodney W. Grimes * If the file is bigger than the number of sectors would indicate, 1008fae3551SRodney W. Grimes * then the file has holes in it. In this case we must use the 1018fae3551SRodney W. Grimes * block count to estimate the number of data blocks used, but 1028fae3551SRodney W. Grimes * we use the actual size for estimating the number of indirect 1038fae3551SRodney W. Grimes * dump blocks (sizeest vs. blkest in the indirect block 1048fae3551SRodney W. Grimes * calculation). 1058fae3551SRodney W. Grimes */ 1061c85e6a3SKirk McKusick blkest = howmany(dbtob(DIP(dp, di_blocks)), TP_BSIZE); 1071c85e6a3SKirk McKusick sizeest = howmany(DIP(dp, di_size), TP_BSIZE); 1088fae3551SRodney W. Grimes if (blkest > sizeest) 1098fae3551SRodney W. Grimes blkest = sizeest; 1101c85e6a3SKirk McKusick if (DIP(dp, di_size) > sblock->fs_bsize * NDADDR) { 1118fae3551SRodney W. Grimes /* calculate the number of indirect blocks on the dump tape */ 1128fae3551SRodney W. Grimes blkest += 1138fae3551SRodney W. Grimes howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE, 1148fae3551SRodney W. Grimes TP_NINDIR); 1158fae3551SRodney W. Grimes } 1168fae3551SRodney W. Grimes return (blkest + 1); 1178fae3551SRodney W. Grimes } 1188fae3551SRodney W. Grimes 1198fae3551SRodney W. Grimes /* Auxiliary macro to pick up files changed since previous dump. */ 1208fae3551SRodney W. Grimes #define CHANGEDSINCE(dp, t) \ 1211c85e6a3SKirk McKusick (DIP(dp, di_mtime) >= (t) || DIP(dp, di_ctime) >= (t)) 1228fae3551SRodney W. Grimes 1238fae3551SRodney W. Grimes /* The WANTTODUMP macro decides whether a file should be dumped. */ 1248fae3551SRodney W. Grimes #ifdef UF_NODUMP 1258fae3551SRodney W. Grimes #define WANTTODUMP(dp) \ 1268fae3551SRodney W. Grimes (CHANGEDSINCE(dp, spcl.c_ddate) && \ 1271c85e6a3SKirk McKusick (nonodump || (DIP(dp, di_flags) & UF_NODUMP) != UF_NODUMP)) 1288fae3551SRodney W. Grimes #else 1298fae3551SRodney W. Grimes #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate) 1308fae3551SRodney W. Grimes #endif 1318fae3551SRodney W. Grimes 1328fae3551SRodney W. Grimes /* 1338fae3551SRodney W. Grimes * Dump pass 1. 1348fae3551SRodney W. Grimes * 1358fae3551SRodney W. Grimes * Walk the inode list for a file system to find all allocated inodes 1368fae3551SRodney W. Grimes * that have been modified since the previous dump time. Also, find all 1378fae3551SRodney W. Grimes * the directories in the file system. 1388fae3551SRodney W. Grimes */ 1398fae3551SRodney W. Grimes int 1402db673abSWarner Losh mapfiles(ino_t maxino, long *tapesize) 1418fae3551SRodney W. Grimes { 14269becf4aSKirk McKusick int i, cg, mode, inosused; 1438fae3551SRodney W. Grimes int anydirskipped = 0; 14469becf4aSKirk McKusick union dinode *dp; 14569becf4aSKirk McKusick struct cg *cgp; 14669becf4aSKirk McKusick ino_t ino; 14769becf4aSKirk McKusick char *cp; 1488fae3551SRodney W. Grimes 14969becf4aSKirk McKusick if ((cgp = malloc(sblock->fs_cgsize)) == NULL) 15069becf4aSKirk McKusick quit("mapfiles: cannot allocate memory.\n"); 15169becf4aSKirk McKusick for (cg = 0; cg < sblock->fs_ncg; cg++) { 15269becf4aSKirk McKusick ino = cg * sblock->fs_ipg; 15369becf4aSKirk McKusick bread(fsbtodb(sblock, cgtod(sblock, cg)), (char *)cgp, 15469becf4aSKirk McKusick sblock->fs_cgsize); 15569becf4aSKirk McKusick if (sblock->fs_magic == FS_UFS2_MAGIC) 15669becf4aSKirk McKusick inosused = cgp->cg_initediblk; 15769becf4aSKirk McKusick else 15869becf4aSKirk McKusick inosused = sblock->fs_ipg; 15969becf4aSKirk McKusick /* 16069becf4aSKirk McKusick * If we are using soft updates, then we can trust the 16169becf4aSKirk McKusick * cylinder group inode allocation maps to tell us which 16269becf4aSKirk McKusick * inodes are allocated. We will scan the used inode map 16369becf4aSKirk McKusick * to find the inodes that are really in use, and then 16469becf4aSKirk McKusick * read only those inodes in from disk. 16569becf4aSKirk McKusick */ 16669becf4aSKirk McKusick if (sblock->fs_flags & FS_DOSOFTDEP) { 16769becf4aSKirk McKusick if (!cg_chkmagic(cgp)) 16869becf4aSKirk McKusick quit("mapfiles: cg %d: bad magic number\n", cg); 16969becf4aSKirk McKusick cp = &cg_inosused(cgp)[(inosused - 1) / CHAR_BIT]; 17069becf4aSKirk McKusick for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) { 17169becf4aSKirk McKusick if (*cp == 0) 17269becf4aSKirk McKusick continue; 17369becf4aSKirk McKusick for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) { 17469becf4aSKirk McKusick if (*cp & i) 17569becf4aSKirk McKusick break; 17669becf4aSKirk McKusick inosused--; 17769becf4aSKirk McKusick } 17869becf4aSKirk McKusick break; 17969becf4aSKirk McKusick } 18069becf4aSKirk McKusick if (inosused <= 0) 18169becf4aSKirk McKusick continue; 18269becf4aSKirk McKusick } 18369becf4aSKirk McKusick for (i = 0; i < inosused; i++, ino++) { 18469becf4aSKirk McKusick if (ino < ROOTINO || 18569becf4aSKirk McKusick (dp = getino(ino, &mode)) == NULL || 18669becf4aSKirk McKusick (mode & IFMT) == 0) 1878fae3551SRodney W. Grimes continue; 188801382faSDavid E. O'Brien /* 1892c8094f3SJordan K. Hubbard * Everything must go in usedinomap so that a check 1902c8094f3SJordan K. Hubbard * for "in dumpdirmap but not in usedinomap" to detect 1912c8094f3SJordan K. Hubbard * dirs with nodump set has a chance of succeeding 1922c8094f3SJordan K. Hubbard * (this is used in mapdirs()). 193801382faSDavid E. O'Brien */ 1942c8094f3SJordan K. Hubbard SETINO(ino, usedinomap); 1958fae3551SRodney W. Grimes if (mode == IFDIR) 1968fae3551SRodney W. Grimes SETINO(ino, dumpdirmap); 1978fae3551SRodney W. Grimes if (WANTTODUMP(dp)) { 1988fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 19969becf4aSKirk McKusick if (mode != IFREG && 20069becf4aSKirk McKusick mode != IFDIR && 20169becf4aSKirk McKusick mode != IFLNK) 2028fae3551SRodney W. Grimes *tapesize += 1; 2038fae3551SRodney W. Grimes else 2048fae3551SRodney W. Grimes *tapesize += blockest(dp); 2058fae3551SRodney W. Grimes continue; 2068fae3551SRodney W. Grimes } 2072c8094f3SJordan K. Hubbard if (mode == IFDIR) { 20869becf4aSKirk McKusick if (!nonodump && 20969becf4aSKirk McKusick (DIP(dp, di_flags) & UF_NODUMP)) 2102c8094f3SJordan K. Hubbard CLRINO(ino, usedinomap); 2118fae3551SRodney W. Grimes anydirskipped = 1; 2128fae3551SRodney W. Grimes } 2132c8094f3SJordan K. Hubbard } 21469becf4aSKirk McKusick } 2158fae3551SRodney W. Grimes /* 2168fae3551SRodney W. Grimes * Restore gets very upset if the root is not dumped, 2178fae3551SRodney W. Grimes * so ensure that it always is dumped. 2188fae3551SRodney W. Grimes */ 2198fae3551SRodney W. Grimes SETINO(ROOTINO, dumpinomap); 2208fae3551SRodney W. Grimes return (anydirskipped); 2218fae3551SRodney W. Grimes } 2228fae3551SRodney W. Grimes 2238fae3551SRodney W. Grimes /* 2248fae3551SRodney W. Grimes * Dump pass 2. 2258fae3551SRodney W. Grimes * 2268fae3551SRodney W. Grimes * Scan each directory on the file system to see if it has any modified 2278fae3551SRodney W. Grimes * files in it. If it does, and has not already been added to the dump 2288fae3551SRodney W. Grimes * list (because it was itself modified), then add it. If a directory 2298fae3551SRodney W. Grimes * has not been modified itself, contains no modified files and has no 2308fae3551SRodney W. Grimes * subdirectories, then it can be deleted from the dump list and from 2318fae3551SRodney W. Grimes * the list of directories. By deleting it from the list of directories, 2328fae3551SRodney W. Grimes * its parent may now qualify for the same treatment on this or a later 2338fae3551SRodney W. Grimes * pass using this algorithm. 2348fae3551SRodney W. Grimes */ 2358fae3551SRodney W. Grimes int 2362db673abSWarner Losh mapdirs(ino_t maxino, long *tapesize) 2378fae3551SRodney W. Grimes { 2381c85e6a3SKirk McKusick union dinode *dp; 239d2334e27SIan Dowse int i, isdir, nodump; 240d2334e27SIan Dowse char *map; 241d2334e27SIan Dowse ino_t ino; 2421c85e6a3SKirk McKusick union dinode di; 2438fae3551SRodney W. Grimes long filesize; 2448fae3551SRodney W. Grimes int ret, change = 0; 2458fae3551SRodney W. Grimes 2468fae3551SRodney W. Grimes isdir = 0; /* XXX just to get gcc to shut up */ 2478fae3551SRodney W. Grimes for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 24889fdc4e1SMike Barcroft if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */ 2498fae3551SRodney W. Grimes isdir = *map++; 2508fae3551SRodney W. Grimes else 2518fae3551SRodney W. Grimes isdir >>= 1; 252801382faSDavid E. O'Brien /* 253801382faSDavid E. O'Brien * If a directory has been removed from usedinomap, it 254801382faSDavid E. O'Brien * either has the nodump flag set, or has inherited 255801382faSDavid E. O'Brien * it. Although a directory can't be in dumpinomap if 256801382faSDavid E. O'Brien * it isn't in usedinomap, we have to go through it to 257801382faSDavid E. O'Brien * propagate the nodump flag. 258801382faSDavid E. O'Brien */ 2592c8094f3SJordan K. Hubbard nodump = !nonodump && (TSTINO(ino, usedinomap) == 0); 260801382faSDavid E. O'Brien if ((isdir & 1) == 0 || (TSTINO(ino, dumpinomap) && !nodump)) 2618fae3551SRodney W. Grimes continue; 2621c85e6a3SKirk McKusick dp = getino(ino, &i); 2631c85e6a3SKirk McKusick /* 2641c85e6a3SKirk McKusick * inode buf may change in searchdir(). 2651c85e6a3SKirk McKusick */ 2661c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 2671c85e6a3SKirk McKusick di.dp1 = dp->dp1; 2681c85e6a3SKirk McKusick else 2691c85e6a3SKirk McKusick di.dp2 = dp->dp2; 2701c85e6a3SKirk McKusick filesize = DIP(&di, di_size); 2718fae3551SRodney W. Grimes for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) { 2721c85e6a3SKirk McKusick if (DIP(&di, di_db[i]) != 0) 2731c85e6a3SKirk McKusick ret |= searchdir(ino, DIP(&di, di_db[i]), 2741c85e6a3SKirk McKusick (long)sblksize(sblock, DIP(dp, di_size), i), 275801382faSDavid E. O'Brien filesize, tapesize, nodump); 2768fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2778fae3551SRodney W. Grimes filesize = 0; 2788fae3551SRodney W. Grimes else 2798fae3551SRodney W. Grimes filesize -= sblock->fs_bsize; 2808fae3551SRodney W. Grimes } 2818fae3551SRodney W. Grimes for (i = 0; filesize > 0 && i < NIADDR; i++) { 2821c85e6a3SKirk McKusick if (DIP(&di, di_ib[i]) == 0) 2838fae3551SRodney W. Grimes continue; 2841c85e6a3SKirk McKusick ret |= dirindir(ino, DIP(&di, di_ib[i]), i, &filesize, 285801382faSDavid E. O'Brien tapesize, nodump); 2868fae3551SRodney W. Grimes } 2878fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) { 2888fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 2898fae3551SRodney W. Grimes *tapesize += blockest(dp); 2908fae3551SRodney W. Grimes change = 1; 2918fae3551SRodney W. Grimes continue; 2928fae3551SRodney W. Grimes } 293801382faSDavid E. O'Brien if (nodump) { 294801382faSDavid E. O'Brien if (ret & HASSUBDIRS) 295801382faSDavid E. O'Brien change = 1; /* subdirs inherit nodump */ 296801382faSDavid E. O'Brien CLRINO(ino, dumpdirmap); 297801382faSDavid E. O'Brien } else if ((ret & HASSUBDIRS) == 0) 2988fae3551SRodney W. Grimes if (!TSTINO(ino, dumpinomap)) { 2998fae3551SRodney W. Grimes CLRINO(ino, dumpdirmap); 3008fae3551SRodney W. Grimes change = 1; 3018fae3551SRodney W. Grimes } 3028fae3551SRodney W. Grimes } 3038fae3551SRodney W. Grimes return (change); 3048fae3551SRodney W. Grimes } 3058fae3551SRodney W. Grimes 3068fae3551SRodney W. Grimes /* 3078fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be searched 3088fae3551SRodney W. Grimes * as directories. Quit as soon as any entry is found that will 3098fae3551SRodney W. Grimes * require the directory to be dumped. 3108fae3551SRodney W. Grimes */ 3118fae3551SRodney W. Grimes static int 3121c85e6a3SKirk McKusick dirindir( 3131c85e6a3SKirk McKusick ino_t ino, 3141c85e6a3SKirk McKusick ufs2_daddr_t blkno, 3151c85e6a3SKirk McKusick int ind_level, 3161c85e6a3SKirk McKusick long *filesize, 3171c85e6a3SKirk McKusick long *tapesize, 3181c85e6a3SKirk McKusick int nodump) 3198fae3551SRodney W. Grimes { 3207680e41cSIan Dowse union { 3217680e41cSIan Dowse ufs1_daddr_t ufs1[MAXBSIZE / sizeof(ufs1_daddr_t)]; 3227680e41cSIan Dowse ufs2_daddr_t ufs2[MAXBSIZE / sizeof(ufs2_daddr_t)]; 3237680e41cSIan Dowse } idblk; 3248fae3551SRodney W. Grimes int ret = 0; 325d2334e27SIan Dowse int i; 3268fae3551SRodney W. Grimes 3277680e41cSIan Dowse bread(fsbtodb(sblock, blkno), (char *)&idblk, (int)sblock->fs_bsize); 3288fae3551SRodney W. Grimes if (ind_level <= 0) { 3298fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 3301c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 3317680e41cSIan Dowse blkno = idblk.ufs1[i]; 3321c85e6a3SKirk McKusick else 3337680e41cSIan Dowse blkno = idblk.ufs2[i]; 3348fae3551SRodney W. Grimes if (blkno != 0) 3358fae3551SRodney W. Grimes ret |= searchdir(ino, blkno, sblock->fs_bsize, 336801382faSDavid E. O'Brien *filesize, tapesize, nodump); 3378fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 3388fae3551SRodney W. Grimes *filesize = 0; 3398fae3551SRodney W. Grimes else 3408fae3551SRodney W. Grimes *filesize -= sblock->fs_bsize; 3418fae3551SRodney W. Grimes } 3428fae3551SRodney W. Grimes return (ret); 3438fae3551SRodney W. Grimes } 3448fae3551SRodney W. Grimes ind_level--; 3458fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 3461c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 3477680e41cSIan Dowse blkno = idblk.ufs1[i]; 3481c85e6a3SKirk McKusick else 3497680e41cSIan Dowse blkno = idblk.ufs2[i]; 3508fae3551SRodney W. Grimes if (blkno != 0) 351801382faSDavid E. O'Brien ret |= dirindir(ino, blkno, ind_level, filesize, 352801382faSDavid E. O'Brien tapesize, nodump); 3538fae3551SRodney W. Grimes } 3548fae3551SRodney W. Grimes return (ret); 3558fae3551SRodney W. Grimes } 3568fae3551SRodney W. Grimes 3578fae3551SRodney W. Grimes /* 3588fae3551SRodney W. Grimes * Scan a disk block containing directory information looking to see if 3598fae3551SRodney W. Grimes * any of the entries are on the dump list and to see if the directory 3608fae3551SRodney W. Grimes * contains any subdirectories. 3618fae3551SRodney W. Grimes */ 3628fae3551SRodney W. Grimes static int 3631c85e6a3SKirk McKusick searchdir( 3641c85e6a3SKirk McKusick ino_t ino, 3651c85e6a3SKirk McKusick ufs2_daddr_t blkno, 3661c85e6a3SKirk McKusick long size, 3671c85e6a3SKirk McKusick long filesize, 3681c85e6a3SKirk McKusick long *tapesize, 3691c85e6a3SKirk McKusick int nodump) 3708fae3551SRodney W. Grimes { 3711c85e6a3SKirk McKusick int mode; 372d2334e27SIan Dowse struct direct *dp; 3731c85e6a3SKirk McKusick union dinode *ip; 374d2334e27SIan Dowse long loc, ret = 0; 3751c85e6a3SKirk McKusick static caddr_t dblk; 3768fae3551SRodney W. Grimes 3771c85e6a3SKirk McKusick if (dblk == NULL && (dblk = malloc(sblock->fs_bsize)) == NULL) 3781c85e6a3SKirk McKusick quit("searchdir: cannot allocate indirect memory.\n"); 3798fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), dblk, (int)size); 3808fae3551SRodney W. Grimes if (filesize < size) 3818fae3551SRodney W. Grimes size = filesize; 3828fae3551SRodney W. Grimes for (loc = 0; loc < size; ) { 3838fae3551SRodney W. Grimes dp = (struct direct *)(dblk + loc); 3848fae3551SRodney W. Grimes if (dp->d_reclen == 0) { 3858fae3551SRodney W. Grimes msg("corrupted directory, inumber %d\n", ino); 3868fae3551SRodney W. Grimes break; 3878fae3551SRodney W. Grimes } 3888fae3551SRodney W. Grimes loc += dp->d_reclen; 3898fae3551SRodney W. Grimes if (dp->d_ino == 0) 3908fae3551SRodney W. Grimes continue; 3918fae3551SRodney W. Grimes if (dp->d_name[0] == '.') { 3928fae3551SRodney W. Grimes if (dp->d_name[1] == '\0') 3938fae3551SRodney W. Grimes continue; 3948fae3551SRodney W. Grimes if (dp->d_name[1] == '.' && dp->d_name[2] == '\0') 3958fae3551SRodney W. Grimes continue; 3968fae3551SRodney W. Grimes } 397801382faSDavid E. O'Brien if (nodump) { 3981c85e6a3SKirk McKusick ip = getino(dp->d_ino, &mode); 399801382faSDavid E. O'Brien if (TSTINO(dp->d_ino, dumpinomap)) { 400801382faSDavid E. O'Brien CLRINO(dp->d_ino, dumpinomap); 401801382faSDavid E. O'Brien *tapesize -= blockest(ip); 402801382faSDavid E. O'Brien } 40301629855SDavid E. O'Brien /* 40401629855SDavid E. O'Brien * Add back to dumpdirmap and remove from usedinomap 40501629855SDavid E. O'Brien * to propagate nodump. 40601629855SDavid E. O'Brien */ 4071c85e6a3SKirk McKusick if (mode == IFDIR) { 408801382faSDavid E. O'Brien SETINO(dp->d_ino, dumpdirmap); 40901629855SDavid E. O'Brien CLRINO(dp->d_ino, usedinomap); 410801382faSDavid E. O'Brien ret |= HASSUBDIRS; 411801382faSDavid E. O'Brien } 412801382faSDavid E. O'Brien } else { 4138fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpinomap)) { 4148fae3551SRodney W. Grimes ret |= HASDUMPEDFILE; 4158fae3551SRodney W. Grimes if (ret & HASSUBDIRS) 4168fae3551SRodney W. Grimes break; 4178fae3551SRodney W. Grimes } 4188fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpdirmap)) { 4198fae3551SRodney W. Grimes ret |= HASSUBDIRS; 4208fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 4218fae3551SRodney W. Grimes break; 4228fae3551SRodney W. Grimes } 4238fae3551SRodney W. Grimes } 424801382faSDavid E. O'Brien } 4258fae3551SRodney W. Grimes return (ret); 4268fae3551SRodney W. Grimes } 4278fae3551SRodney W. Grimes 4288fae3551SRodney W. Grimes /* 4298fae3551SRodney W. Grimes * Dump passes 3 and 4. 4308fae3551SRodney W. Grimes * 4318fae3551SRodney W. Grimes * Dump the contents of an inode to tape. 4328fae3551SRodney W. Grimes */ 4338fae3551SRodney W. Grimes void 4341c85e6a3SKirk McKusick dumpino(union dinode *dp, ino_t ino) 4358fae3551SRodney W. Grimes { 4368fae3551SRodney W. Grimes int ind_level, cnt; 4371c85e6a3SKirk McKusick off_t size; 4388fae3551SRodney W. Grimes char buf[TP_BSIZE]; 4398fae3551SRodney W. Grimes 4408fae3551SRodney W. Grimes if (newtape) { 4418fae3551SRodney W. Grimes newtape = 0; 4428fae3551SRodney W. Grimes dumpmap(dumpinomap, TS_BITS, ino); 4438fae3551SRodney W. Grimes } 4448fae3551SRodney W. Grimes CLRINO(ino, dumpinomap); 445be5b1425SKirk McKusick /* 446be5b1425SKirk McKusick * Zero out the size of a snapshot so that it will be dumped 447be5b1425SKirk McKusick * as a zero length file. 448be5b1425SKirk McKusick */ 449be5b1425SKirk McKusick if ((DIP(dp, di_flags) & SF_SNAPSHOT) != 0) { 450be5b1425SKirk McKusick DIP(dp, di_size) = 0; 451be5b1425SKirk McKusick DIP(dp, di_flags) &= ~SF_SNAPSHOT; 452be5b1425SKirk McKusick } 4531c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) { 4541c85e6a3SKirk McKusick spcl.c_mode = dp->dp1.di_mode; 4551c85e6a3SKirk McKusick spcl.c_size = dp->dp1.di_size; 4561c85e6a3SKirk McKusick spcl.c_atime = _time32_to_time(dp->dp1.di_atime); 4571c85e6a3SKirk McKusick spcl.c_atimensec = dp->dp1.di_atimensec; 4581c85e6a3SKirk McKusick spcl.c_mtime = _time32_to_time(dp->dp1.di_mtime); 4591c85e6a3SKirk McKusick spcl.c_mtimensec = dp->dp1.di_mtimensec; 460fb36a3d8SKirk McKusick spcl.c_birthtime = 0; 461fb36a3d8SKirk McKusick spcl.c_birthtimensec = 0; 4621c85e6a3SKirk McKusick spcl.c_rdev = dp->dp1.di_rdev; 4631c85e6a3SKirk McKusick spcl.c_file_flags = dp->dp1.di_flags; 4641c85e6a3SKirk McKusick spcl.c_uid = dp->dp1.di_uid; 4651c85e6a3SKirk McKusick spcl.c_gid = dp->dp1.di_gid; 4661c85e6a3SKirk McKusick } else { 4671c85e6a3SKirk McKusick spcl.c_mode = dp->dp2.di_mode; 4681c85e6a3SKirk McKusick spcl.c_size = dp->dp2.di_size; 4691c85e6a3SKirk McKusick spcl.c_atime = _time64_to_time(dp->dp2.di_atime); 4701c85e6a3SKirk McKusick spcl.c_atimensec = dp->dp2.di_atimensec; 4711c85e6a3SKirk McKusick spcl.c_mtime = _time64_to_time(dp->dp2.di_mtime); 4721c85e6a3SKirk McKusick spcl.c_mtimensec = dp->dp2.di_mtimensec; 473fb36a3d8SKirk McKusick spcl.c_birthtime = _time64_to_time(dp->dp2.di_birthtime); 474fb36a3d8SKirk McKusick spcl.c_birthtimensec = dp->dp2.di_birthnsec; 4751c85e6a3SKirk McKusick spcl.c_rdev = dp->dp2.di_rdev; 4761c85e6a3SKirk McKusick spcl.c_file_flags = dp->dp2.di_flags; 4771c85e6a3SKirk McKusick spcl.c_uid = dp->dp2.di_uid; 4781c85e6a3SKirk McKusick spcl.c_gid = dp->dp2.di_gid; 4791c85e6a3SKirk McKusick } 4808fae3551SRodney W. Grimes spcl.c_type = TS_INODE; 4818fae3551SRodney W. Grimes spcl.c_count = 0; 4821c85e6a3SKirk McKusick switch (DIP(dp, di_mode) & S_IFMT) { 4838fae3551SRodney W. Grimes 4848fae3551SRodney W. Grimes case 0: 4858fae3551SRodney W. Grimes /* 4868fae3551SRodney W. Grimes * Freed inode. 4878fae3551SRodney W. Grimes */ 4888fae3551SRodney W. Grimes return; 4898fae3551SRodney W. Grimes 4908fae3551SRodney W. Grimes case S_IFLNK: 4918fae3551SRodney W. Grimes /* 4928fae3551SRodney W. Grimes * Check for short symbolic link. 4938fae3551SRodney W. Grimes */ 4941c85e6a3SKirk McKusick if (DIP(dp, di_size) > 0 && 4951c85e6a3SKirk McKusick DIP(dp, di_size) < sblock->fs_maxsymlinklen) { 4968fae3551SRodney W. Grimes spcl.c_addr[0] = 1; 4978fae3551SRodney W. Grimes spcl.c_count = 1; 4988fae3551SRodney W. Grimes writeheader(ino); 4991c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5001c85e6a3SKirk McKusick memmove(buf, (caddr_t)dp->dp1.di_db, 5011c85e6a3SKirk McKusick (u_long)DIP(dp, di_size)); 5021c85e6a3SKirk McKusick else 5031c85e6a3SKirk McKusick memmove(buf, (caddr_t)dp->dp2.di_db, 5041c85e6a3SKirk McKusick (u_long)DIP(dp, di_size)); 5051c85e6a3SKirk McKusick buf[DIP(dp, di_size)] = '\0'; 5068fae3551SRodney W. Grimes writerec(buf, 0); 5078fae3551SRodney W. Grimes return; 5088fae3551SRodney W. Grimes } 5097fed38d0SPhilippe Charnier /* FALLTHROUGH */ 5108fae3551SRodney W. Grimes 5118fae3551SRodney W. Grimes case S_IFDIR: 5128fae3551SRodney W. Grimes case S_IFREG: 5131c85e6a3SKirk McKusick if (DIP(dp, di_size) > 0) 5148fae3551SRodney W. Grimes break; 5157fed38d0SPhilippe Charnier /* FALLTHROUGH */ 5168fae3551SRodney W. Grimes 5178fae3551SRodney W. Grimes case S_IFIFO: 5188fae3551SRodney W. Grimes case S_IFSOCK: 5198fae3551SRodney W. Grimes case S_IFCHR: 5208fae3551SRodney W. Grimes case S_IFBLK: 5218fae3551SRodney W. Grimes writeheader(ino); 5228fae3551SRodney W. Grimes return; 5238fae3551SRodney W. Grimes 5248fae3551SRodney W. Grimes default: 5251c85e6a3SKirk McKusick msg("Warning: undefined file type 0%o\n", 5261c85e6a3SKirk McKusick DIP(dp, di_mode) & IFMT); 5278fae3551SRodney W. Grimes return; 5288fae3551SRodney W. Grimes } 5291c85e6a3SKirk McKusick if (DIP(dp, di_size) > NDADDR * sblock->fs_bsize) 5308fae3551SRodney W. Grimes cnt = NDADDR * sblock->fs_frag; 5318fae3551SRodney W. Grimes else 5321c85e6a3SKirk McKusick cnt = howmany(DIP(dp, di_size), sblock->fs_fsize); 5331c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5341c85e6a3SKirk McKusick ufs1_blksout(&dp->dp1.di_db[0], cnt, ino); 5351c85e6a3SKirk McKusick else 5361c85e6a3SKirk McKusick ufs2_blksout(&dp->dp2.di_db[0], cnt, ino); 5371c85e6a3SKirk McKusick if ((size = DIP(dp, di_size) - NDADDR * sblock->fs_bsize) <= 0) 5388fae3551SRodney W. Grimes return; 5398fae3551SRodney W. Grimes for (ind_level = 0; ind_level < NIADDR; ind_level++) { 5401c85e6a3SKirk McKusick dmpindir(ino, DIP(dp, di_ib[ind_level]), ind_level, &size); 5418fae3551SRodney W. Grimes if (size <= 0) 5428fae3551SRodney W. Grimes return; 5438fae3551SRodney W. Grimes } 5448fae3551SRodney W. Grimes } 5458fae3551SRodney W. Grimes 5468fae3551SRodney W. Grimes /* 5478fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be dumped. 5488fae3551SRodney W. Grimes */ 5498fae3551SRodney W. Grimes static void 5501c85e6a3SKirk McKusick dmpindir(ino_t ino, ufs2_daddr_t blk, int ind_level, off_t *size) 5518fae3551SRodney W. Grimes { 5527680e41cSIan Dowse union { 5537680e41cSIan Dowse ufs1_daddr_t ufs1[MAXBSIZE / sizeof(ufs1_daddr_t)]; 5547680e41cSIan Dowse ufs2_daddr_t ufs2[MAXBSIZE / sizeof(ufs2_daddr_t)]; 5557680e41cSIan Dowse } idblk; 5568fae3551SRodney W. Grimes int i, cnt; 5578fae3551SRodney W. Grimes 5588fae3551SRodney W. Grimes if (blk != 0) 5597680e41cSIan Dowse bread(fsbtodb(sblock, blk), (char *)&idblk, 5607680e41cSIan Dowse (int)sblock->fs_bsize); 5618fae3551SRodney W. Grimes else 5627680e41cSIan Dowse memset(&idblk, 0, sblock->fs_bsize); 5638fae3551SRodney W. Grimes if (ind_level <= 0) { 5648fae3551SRodney W. Grimes if (*size < NINDIR(sblock) * sblock->fs_bsize) 5658fae3551SRodney W. Grimes cnt = howmany(*size, sblock->fs_fsize); 5668fae3551SRodney W. Grimes else 5678fae3551SRodney W. Grimes cnt = NINDIR(sblock) * sblock->fs_frag; 5688fae3551SRodney W. Grimes *size -= NINDIR(sblock) * sblock->fs_bsize; 5691c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5707680e41cSIan Dowse ufs1_blksout(idblk.ufs1, cnt, ino); 5711c85e6a3SKirk McKusick else 5727680e41cSIan Dowse ufs2_blksout(idblk.ufs2, cnt, ino); 5738fae3551SRodney W. Grimes return; 5748fae3551SRodney W. Grimes } 5758fae3551SRodney W. Grimes ind_level--; 5768fae3551SRodney W. Grimes for (i = 0; i < NINDIR(sblock); i++) { 5771c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5787680e41cSIan Dowse dmpindir(ino, idblk.ufs1[i], ind_level, size); 5791c85e6a3SKirk McKusick else 5807680e41cSIan Dowse dmpindir(ino, idblk.ufs2[i], ind_level, size); 5818fae3551SRodney W. Grimes if (*size <= 0) 5828fae3551SRodney W. Grimes return; 5838fae3551SRodney W. Grimes } 5848fae3551SRodney W. Grimes } 5858fae3551SRodney W. Grimes 5868fae3551SRodney W. Grimes /* 5878fae3551SRodney W. Grimes * Collect up the data into tape record sized buffers and output them. 5888fae3551SRodney W. Grimes */ 5898fae3551SRodney W. Grimes void 5901c85e6a3SKirk McKusick ufs1_blksout(ufs1_daddr_t *blkp, int frags, ino_t ino) 5918fae3551SRodney W. Grimes { 5921c85e6a3SKirk McKusick ufs1_daddr_t *bp; 5931c85e6a3SKirk McKusick int i, j, count, blks, tbperdb; 5941c85e6a3SKirk McKusick 5951c85e6a3SKirk McKusick blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 5961c85e6a3SKirk McKusick tbperdb = sblock->fs_bsize >> tp_bshift; 5971c85e6a3SKirk McKusick for (i = 0; i < blks; i += TP_NINDIR) { 5981c85e6a3SKirk McKusick if (i + TP_NINDIR > blks) 5991c85e6a3SKirk McKusick count = blks; 6001c85e6a3SKirk McKusick else 6011c85e6a3SKirk McKusick count = i + TP_NINDIR; 6021c85e6a3SKirk McKusick for (j = i; j < count; j++) 6031c85e6a3SKirk McKusick if (blkp[j / tbperdb] != 0) 6041c85e6a3SKirk McKusick spcl.c_addr[j - i] = 1; 6051c85e6a3SKirk McKusick else 6061c85e6a3SKirk McKusick spcl.c_addr[j - i] = 0; 6071c85e6a3SKirk McKusick spcl.c_count = count - i; 6081c85e6a3SKirk McKusick writeheader(ino); 6091c85e6a3SKirk McKusick bp = &blkp[i / tbperdb]; 6101c85e6a3SKirk McKusick for (j = i; j < count; j += tbperdb, bp++) 6111c85e6a3SKirk McKusick if (*bp != 0) { 6121c85e6a3SKirk McKusick if (j + tbperdb <= count) 6131c85e6a3SKirk McKusick dumpblock(*bp, (int)sblock->fs_bsize); 6141c85e6a3SKirk McKusick else 6151c85e6a3SKirk McKusick dumpblock(*bp, (count - j) * TP_BSIZE); 6161c85e6a3SKirk McKusick } 6171c85e6a3SKirk McKusick spcl.c_type = TS_ADDR; 6181c85e6a3SKirk McKusick } 6191c85e6a3SKirk McKusick } 6201c85e6a3SKirk McKusick 6211c85e6a3SKirk McKusick /* 6221c85e6a3SKirk McKusick * Collect up the data into tape record sized buffers and output them. 6231c85e6a3SKirk McKusick */ 6241c85e6a3SKirk McKusick void 6251c85e6a3SKirk McKusick ufs2_blksout(ufs2_daddr_t *blkp, int frags, ino_t ino) 6261c85e6a3SKirk McKusick { 6271c85e6a3SKirk McKusick ufs2_daddr_t *bp; 6288fae3551SRodney W. Grimes int i, j, count, blks, tbperdb; 6298fae3551SRodney W. Grimes 6308fae3551SRodney W. Grimes blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 6318fae3551SRodney W. Grimes tbperdb = sblock->fs_bsize >> tp_bshift; 6328fae3551SRodney W. Grimes for (i = 0; i < blks; i += TP_NINDIR) { 6338fae3551SRodney W. Grimes if (i + TP_NINDIR > blks) 6348fae3551SRodney W. Grimes count = blks; 6358fae3551SRodney W. Grimes else 6368fae3551SRodney W. Grimes count = i + TP_NINDIR; 6378fae3551SRodney W. Grimes for (j = i; j < count; j++) 6388fae3551SRodney W. Grimes if (blkp[j / tbperdb] != 0) 6398fae3551SRodney W. Grimes spcl.c_addr[j - i] = 1; 6408fae3551SRodney W. Grimes else 6418fae3551SRodney W. Grimes spcl.c_addr[j - i] = 0; 6428fae3551SRodney W. Grimes spcl.c_count = count - i; 6438fae3551SRodney W. Grimes writeheader(ino); 6448fae3551SRodney W. Grimes bp = &blkp[i / tbperdb]; 6458fae3551SRodney W. Grimes for (j = i; j < count; j += tbperdb, bp++) 64616c4e408SBill Fumerola if (*bp != 0) { 6478fae3551SRodney W. Grimes if (j + tbperdb <= count) 6488fae3551SRodney W. Grimes dumpblock(*bp, (int)sblock->fs_bsize); 6498fae3551SRodney W. Grimes else 6508fae3551SRodney W. Grimes dumpblock(*bp, (count - j) * TP_BSIZE); 65116c4e408SBill Fumerola } 6528fae3551SRodney W. Grimes spcl.c_type = TS_ADDR; 6538fae3551SRodney W. Grimes } 6548fae3551SRodney W. Grimes } 6558fae3551SRodney W. Grimes 6568fae3551SRodney W. Grimes /* 6578fae3551SRodney W. Grimes * Dump a map to the tape. 6588fae3551SRodney W. Grimes */ 6598fae3551SRodney W. Grimes void 6602db673abSWarner Losh dumpmap(char *map, int type, ino_t ino) 6618fae3551SRodney W. Grimes { 662d2334e27SIan Dowse int i; 6638fae3551SRodney W. Grimes char *cp; 6648fae3551SRodney W. Grimes 6658fae3551SRodney W. Grimes spcl.c_type = type; 6668fae3551SRodney W. Grimes spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE); 6678fae3551SRodney W. Grimes writeheader(ino); 6688fae3551SRodney W. Grimes for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE) 6698fae3551SRodney W. Grimes writerec(cp, 0); 6708fae3551SRodney W. Grimes } 6718fae3551SRodney W. Grimes 6728fae3551SRodney W. Grimes /* 6738fae3551SRodney W. Grimes * Write a header record to the dump tape. 6748fae3551SRodney W. Grimes */ 6758fae3551SRodney W. Grimes void 6762db673abSWarner Losh writeheader(ino_t ino) 6778fae3551SRodney W. Grimes { 678d2334e27SIan Dowse int32_t sum, cnt, *lp; 6798fae3551SRodney W. Grimes 6808fae3551SRodney W. Grimes spcl.c_inumber = ino; 6811c85e6a3SKirk McKusick spcl.c_magic = FS_UFS2_MAGIC; 6828fae3551SRodney W. Grimes spcl.c_checksum = 0; 68397b465b1SDima Ruban lp = (int32_t *)&spcl; 6848fae3551SRodney W. Grimes sum = 0; 68597b465b1SDima Ruban cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t)); 6868fae3551SRodney W. Grimes while (--cnt >= 0) { 6878fae3551SRodney W. Grimes sum += *lp++; 6888fae3551SRodney W. Grimes sum += *lp++; 6898fae3551SRodney W. Grimes sum += *lp++; 6908fae3551SRodney W. Grimes sum += *lp++; 6918fae3551SRodney W. Grimes } 6928fae3551SRodney W. Grimes spcl.c_checksum = CHECKSUM - sum; 6938fae3551SRodney W. Grimes writerec((char *)&spcl, 1); 6948fae3551SRodney W. Grimes } 6958fae3551SRodney W. Grimes 6961c85e6a3SKirk McKusick union dinode * 6971c85e6a3SKirk McKusick getino(ino_t inum, int *modep) 6988fae3551SRodney W. Grimes { 6991c85e6a3SKirk McKusick static ino_t minino, maxino; 7001c85e6a3SKirk McKusick static caddr_t inoblock; 7011c85e6a3SKirk McKusick struct ufs1_dinode *dp1; 7021c85e6a3SKirk McKusick struct ufs2_dinode *dp2; 7038fae3551SRodney W. Grimes 7041c85e6a3SKirk McKusick if (inoblock == NULL && (inoblock = malloc(sblock->fs_bsize)) == NULL) 7051c85e6a3SKirk McKusick quit("cannot allocate inode memory.\n"); 7068fae3551SRodney W. Grimes curino = inum; 7078fae3551SRodney W. Grimes if (inum >= minino && inum < maxino) 7081c85e6a3SKirk McKusick goto gotit; 7091c85e6a3SKirk McKusick bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), inoblock, 7108fae3551SRodney W. Grimes (int)sblock->fs_bsize); 7118fae3551SRodney W. Grimes minino = inum - (inum % INOPB(sblock)); 7128fae3551SRodney W. Grimes maxino = minino + INOPB(sblock); 7131c85e6a3SKirk McKusick gotit: 7141c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) { 7151c85e6a3SKirk McKusick dp1 = &((struct ufs1_dinode *)inoblock)[inum - minino]; 7161c85e6a3SKirk McKusick *modep = (dp1->di_mode & IFMT); 7171c85e6a3SKirk McKusick return ((union dinode *)dp1); 7181c85e6a3SKirk McKusick } 7191c85e6a3SKirk McKusick dp2 = &((struct ufs2_dinode *)inoblock)[inum - minino]; 7201c85e6a3SKirk McKusick *modep = (dp2->di_mode & IFMT); 7211c85e6a3SKirk McKusick return ((union dinode *)dp2); 7228fae3551SRodney W. Grimes } 7238fae3551SRodney W. Grimes 7248fae3551SRodney W. Grimes /* 7258fae3551SRodney W. Grimes * Read a chunk of data from the disk. 7268fae3551SRodney W. Grimes * Try to recover from hard errors by reading in sector sized pieces. 7278fae3551SRodney W. Grimes * Error recovery is attempted at most BREADEMAX times before seeking 7288fae3551SRodney W. Grimes * consent from the operator to continue. 7298fae3551SRodney W. Grimes */ 7308fae3551SRodney W. Grimes int breaderrors = 0; 7318fae3551SRodney W. Grimes #define BREADEMAX 32 7328fae3551SRodney W. Grimes 7338fae3551SRodney W. Grimes void 7341c85e6a3SKirk McKusick bread(ufs2_daddr_t blkno, char *buf, int size) 7358fae3551SRodney W. Grimes { 7368fae3551SRodney W. Grimes int cnt, i; 7378fae3551SRodney W. Grimes 7388fae3551SRodney W. Grimes loop: 739be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, size, ((off_t)blkno << dev_bshift))) == 740be1bf707SMike Heffner size) 7418fae3551SRodney W. Grimes return; 7428fae3551SRodney W. Grimes if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) { 7438fae3551SRodney W. Grimes /* 7448fae3551SRodney W. Grimes * Trying to read the final fragment. 7458fae3551SRodney W. Grimes * 7468fae3551SRodney W. Grimes * NB - dump only works in TP_BSIZE blocks, hence 7478fae3551SRodney W. Grimes * rounds `dev_bsize' fragments up to TP_BSIZE pieces. 7488fae3551SRodney W. Grimes * It should be smarter about not actually trying to 7498fae3551SRodney W. Grimes * read more than it can get, but for the time being 7508fae3551SRodney W. Grimes * we punt and scale back the read only when it gets 7518fae3551SRodney W. Grimes * us into trouble. (mkm 9/25/83) 7528fae3551SRodney W. Grimes */ 7538fae3551SRodney W. Grimes size -= dev_bsize; 7548fae3551SRodney W. Grimes goto loop; 7558fae3551SRodney W. Grimes } 7568fae3551SRodney W. Grimes if (cnt == -1) 757617dbd3cSIan Dowse msg("read error from %s: %s: [block %jd]: count=%d\n", 758617dbd3cSIan Dowse disk, strerror(errno), (intmax_t)blkno, size); 7598fae3551SRodney W. Grimes else 760617dbd3cSIan Dowse msg("short read error from %s: [block %jd]: count=%d, got=%d\n", 761617dbd3cSIan Dowse disk, (intmax_t)blkno, size, cnt); 7628fae3551SRodney W. Grimes if (++breaderrors > BREADEMAX) { 763325167c3SIan Dowse msg("More than %d block read errors from %s\n", 7648fae3551SRodney W. Grimes BREADEMAX, disk); 7658fae3551SRodney W. Grimes broadcast("DUMP IS AILING!\n"); 7668fae3551SRodney W. Grimes msg("This is an unrecoverable error.\n"); 7678fae3551SRodney W. Grimes if (!query("Do you want to attempt to continue?")){ 7688fae3551SRodney W. Grimes dumpabort(0); 7698fae3551SRodney W. Grimes /*NOTREACHED*/ 7708fae3551SRodney W. Grimes } else 7718fae3551SRodney W. Grimes breaderrors = 0; 7728fae3551SRodney W. Grimes } 7738fae3551SRodney W. Grimes /* 7748fae3551SRodney W. Grimes * Zero buffer, then try to read each sector of buffer separately. 7758fae3551SRodney W. Grimes */ 776a37c38b8SPeter Wemm memset(buf, 0, size); 7778fae3551SRodney W. Grimes for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) { 778be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, (int)dev_bsize, 779be1bf707SMike Heffner ((off_t)blkno << dev_bshift))) == dev_bsize) 7808fae3551SRodney W. Grimes continue; 7818fae3551SRodney W. Grimes if (cnt == -1) { 782617dbd3cSIan Dowse msg("read error from %s: %s: [sector %jd]: count=%ld\n", 783617dbd3cSIan Dowse disk, strerror(errno), (intmax_t)blkno, dev_bsize); 7848fae3551SRodney W. Grimes continue; 7858fae3551SRodney W. Grimes } 786617dbd3cSIan Dowse msg("short read from %s: [sector %jd]: count=%ld, got=%d\n", 787617dbd3cSIan Dowse disk, (intmax_t)blkno, dev_bsize, cnt); 7888fae3551SRodney W. Grimes } 7898fae3551SRodney W. Grimes } 790