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); 796bfd0bdcSKirk McKusick static long blockest(union dinode *dp); 808fae3551SRodney W. Grimes 818fae3551SRodney W. Grimes /* 828fae3551SRodney W. Grimes * This is an estimation of the number of TP_BSIZE blocks in the file. 838fae3551SRodney W. Grimes * It estimates the number of blocks in files with holes by assuming 848fae3551SRodney W. Grimes * that all of the blocks accounted for by di_blocks are data blocks 858fae3551SRodney W. Grimes * (when some of the blocks are usually used for indirect pointers); 868fae3551SRodney W. Grimes * hence the estimate may be high. 878fae3551SRodney W. Grimes */ 886bfd0bdcSKirk McKusick static long 891c85e6a3SKirk McKusick blockest(union dinode *dp) 908fae3551SRodney W. Grimes { 918fae3551SRodney W. Grimes long blkest, sizeest; 928fae3551SRodney W. Grimes 938fae3551SRodney W. Grimes /* 948fae3551SRodney W. Grimes * dp->di_size is the size of the file in bytes. 958fae3551SRodney W. Grimes * dp->di_blocks stores the number of sectors actually in the file. 968fae3551SRodney W. Grimes * If there are more sectors than the size would indicate, this just 978fae3551SRodney W. Grimes * means that there are indirect blocks in the file or unused 988fae3551SRodney W. Grimes * sectors in the last file block; we can safely ignore these 998fae3551SRodney W. Grimes * (blkest = sizeest below). 1008fae3551SRodney W. Grimes * If the file is bigger than the number of sectors would indicate, 1018fae3551SRodney W. Grimes * then the file has holes in it. In this case we must use the 1028fae3551SRodney W. Grimes * block count to estimate the number of data blocks used, but 1038fae3551SRodney W. Grimes * we use the actual size for estimating the number of indirect 1048fae3551SRodney W. Grimes * dump blocks (sizeest vs. blkest in the indirect block 1058fae3551SRodney W. Grimes * calculation). 1068fae3551SRodney W. Grimes */ 1076bfd0bdcSKirk McKusick if ((DIP(dp, di_flags) & SF_SNAPSHOT) != 0) 1086bfd0bdcSKirk McKusick return (1); 1091c85e6a3SKirk McKusick blkest = howmany(dbtob(DIP(dp, di_blocks)), TP_BSIZE); 1101c85e6a3SKirk McKusick sizeest = howmany(DIP(dp, di_size), TP_BSIZE); 1118fae3551SRodney W. Grimes if (blkest > sizeest) 1128fae3551SRodney W. Grimes blkest = sizeest; 1131c85e6a3SKirk McKusick if (DIP(dp, di_size) > sblock->fs_bsize * NDADDR) { 1148fae3551SRodney W. Grimes /* calculate the number of indirect blocks on the dump tape */ 1158fae3551SRodney W. Grimes blkest += 1168fae3551SRodney W. Grimes howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE, 1178fae3551SRodney W. Grimes TP_NINDIR); 1188fae3551SRodney W. Grimes } 1198fae3551SRodney W. Grimes return (blkest + 1); 1208fae3551SRodney W. Grimes } 1218fae3551SRodney W. Grimes 1228fae3551SRodney W. Grimes /* Auxiliary macro to pick up files changed since previous dump. */ 1238fae3551SRodney W. Grimes #define CHANGEDSINCE(dp, t) \ 1241c85e6a3SKirk McKusick (DIP(dp, di_mtime) >= (t) || DIP(dp, di_ctime) >= (t)) 1258fae3551SRodney W. Grimes 1268fae3551SRodney W. Grimes /* The WANTTODUMP macro decides whether a file should be dumped. */ 1278fae3551SRodney W. Grimes #ifdef UF_NODUMP 1288fae3551SRodney W. Grimes #define WANTTODUMP(dp) \ 1298fae3551SRodney W. Grimes (CHANGEDSINCE(dp, spcl.c_ddate) && \ 1301c85e6a3SKirk McKusick (nonodump || (DIP(dp, di_flags) & UF_NODUMP) != UF_NODUMP)) 1318fae3551SRodney W. Grimes #else 1328fae3551SRodney W. Grimes #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate) 1338fae3551SRodney W. Grimes #endif 1348fae3551SRodney W. Grimes 1358fae3551SRodney W. Grimes /* 1368fae3551SRodney W. Grimes * Dump pass 1. 1378fae3551SRodney W. Grimes * 1388fae3551SRodney W. Grimes * Walk the inode list for a file system to find all allocated inodes 1398fae3551SRodney W. Grimes * that have been modified since the previous dump time. Also, find all 1408fae3551SRodney W. Grimes * the directories in the file system. 1418fae3551SRodney W. Grimes */ 1428fae3551SRodney W. Grimes int 1432db673abSWarner Losh mapfiles(ino_t maxino, long *tapesize) 1448fae3551SRodney W. Grimes { 14569becf4aSKirk McKusick int i, cg, mode, inosused; 1468fae3551SRodney W. Grimes int anydirskipped = 0; 14769becf4aSKirk McKusick union dinode *dp; 14869becf4aSKirk McKusick struct cg *cgp; 14969becf4aSKirk McKusick ino_t ino; 15069becf4aSKirk McKusick char *cp; 1518fae3551SRodney W. Grimes 15269becf4aSKirk McKusick if ((cgp = malloc(sblock->fs_cgsize)) == NULL) 15369becf4aSKirk McKusick quit("mapfiles: cannot allocate memory.\n"); 15469becf4aSKirk McKusick for (cg = 0; cg < sblock->fs_ncg; cg++) { 15569becf4aSKirk McKusick ino = cg * sblock->fs_ipg; 15669becf4aSKirk McKusick bread(fsbtodb(sblock, cgtod(sblock, cg)), (char *)cgp, 15769becf4aSKirk McKusick sblock->fs_cgsize); 15869becf4aSKirk McKusick if (sblock->fs_magic == FS_UFS2_MAGIC) 15969becf4aSKirk McKusick inosused = cgp->cg_initediblk; 16069becf4aSKirk McKusick else 16169becf4aSKirk McKusick inosused = sblock->fs_ipg; 16269becf4aSKirk McKusick /* 16369becf4aSKirk McKusick * If we are using soft updates, then we can trust the 16469becf4aSKirk McKusick * cylinder group inode allocation maps to tell us which 16569becf4aSKirk McKusick * inodes are allocated. We will scan the used inode map 16669becf4aSKirk McKusick * to find the inodes that are really in use, and then 16769becf4aSKirk McKusick * read only those inodes in from disk. 16869becf4aSKirk McKusick */ 16969becf4aSKirk McKusick if (sblock->fs_flags & FS_DOSOFTDEP) { 17069becf4aSKirk McKusick if (!cg_chkmagic(cgp)) 17169becf4aSKirk McKusick quit("mapfiles: cg %d: bad magic number\n", cg); 17269becf4aSKirk McKusick cp = &cg_inosused(cgp)[(inosused - 1) / CHAR_BIT]; 17369becf4aSKirk McKusick for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) { 17469becf4aSKirk McKusick if (*cp == 0) 17569becf4aSKirk McKusick continue; 17669becf4aSKirk McKusick for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) { 17769becf4aSKirk McKusick if (*cp & i) 17869becf4aSKirk McKusick break; 17969becf4aSKirk McKusick inosused--; 18069becf4aSKirk McKusick } 18169becf4aSKirk McKusick break; 18269becf4aSKirk McKusick } 18369becf4aSKirk McKusick if (inosused <= 0) 18469becf4aSKirk McKusick continue; 18569becf4aSKirk McKusick } 18669becf4aSKirk McKusick for (i = 0; i < inosused; i++, ino++) { 18769becf4aSKirk McKusick if (ino < ROOTINO || 18869becf4aSKirk McKusick (dp = getino(ino, &mode)) == NULL || 18969becf4aSKirk McKusick (mode & IFMT) == 0) 1908fae3551SRodney W. Grimes continue; 191801382faSDavid E. O'Brien /* 1922c8094f3SJordan K. Hubbard * Everything must go in usedinomap so that a check 1932c8094f3SJordan K. Hubbard * for "in dumpdirmap but not in usedinomap" to detect 1942c8094f3SJordan K. Hubbard * dirs with nodump set has a chance of succeeding 1952c8094f3SJordan K. Hubbard * (this is used in mapdirs()). 196801382faSDavid E. O'Brien */ 1972c8094f3SJordan K. Hubbard SETINO(ino, usedinomap); 1988fae3551SRodney W. Grimes if (mode == IFDIR) 1998fae3551SRodney W. Grimes SETINO(ino, dumpdirmap); 2008fae3551SRodney W. Grimes if (WANTTODUMP(dp)) { 2018fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 20269becf4aSKirk McKusick if (mode != IFREG && 20369becf4aSKirk McKusick mode != IFDIR && 20469becf4aSKirk McKusick mode != IFLNK) 2058fae3551SRodney W. Grimes *tapesize += 1; 2068fae3551SRodney W. Grimes else 2078fae3551SRodney W. Grimes *tapesize += blockest(dp); 2088fae3551SRodney W. Grimes continue; 2098fae3551SRodney W. Grimes } 2102c8094f3SJordan K. Hubbard if (mode == IFDIR) { 21169becf4aSKirk McKusick if (!nonodump && 21269becf4aSKirk McKusick (DIP(dp, di_flags) & UF_NODUMP)) 2132c8094f3SJordan K. Hubbard CLRINO(ino, usedinomap); 2148fae3551SRodney W. Grimes anydirskipped = 1; 2158fae3551SRodney W. Grimes } 2162c8094f3SJordan K. Hubbard } 21769becf4aSKirk McKusick } 2188fae3551SRodney W. Grimes /* 2198fae3551SRodney W. Grimes * Restore gets very upset if the root is not dumped, 2208fae3551SRodney W. Grimes * so ensure that it always is dumped. 2218fae3551SRodney W. Grimes */ 2228fae3551SRodney W. Grimes SETINO(ROOTINO, dumpinomap); 2238fae3551SRodney W. Grimes return (anydirskipped); 2248fae3551SRodney W. Grimes } 2258fae3551SRodney W. Grimes 2268fae3551SRodney W. Grimes /* 2278fae3551SRodney W. Grimes * Dump pass 2. 2288fae3551SRodney W. Grimes * 2298fae3551SRodney W. Grimes * Scan each directory on the file system to see if it has any modified 2308fae3551SRodney W. Grimes * files in it. If it does, and has not already been added to the dump 2318fae3551SRodney W. Grimes * list (because it was itself modified), then add it. If a directory 2328fae3551SRodney W. Grimes * has not been modified itself, contains no modified files and has no 2338fae3551SRodney W. Grimes * subdirectories, then it can be deleted from the dump list and from 2348fae3551SRodney W. Grimes * the list of directories. By deleting it from the list of directories, 2358fae3551SRodney W. Grimes * its parent may now qualify for the same treatment on this or a later 2368fae3551SRodney W. Grimes * pass using this algorithm. 2378fae3551SRodney W. Grimes */ 2388fae3551SRodney W. Grimes int 2392db673abSWarner Losh mapdirs(ino_t maxino, long *tapesize) 2408fae3551SRodney W. Grimes { 2411c85e6a3SKirk McKusick union dinode *dp; 242d2334e27SIan Dowse int i, isdir, nodump; 243d2334e27SIan Dowse char *map; 244d2334e27SIan Dowse ino_t ino; 2451c85e6a3SKirk McKusick union dinode di; 2468fae3551SRodney W. Grimes long filesize; 2478fae3551SRodney W. Grimes int ret, change = 0; 2488fae3551SRodney W. Grimes 2498fae3551SRodney W. Grimes isdir = 0; /* XXX just to get gcc to shut up */ 2508fae3551SRodney W. Grimes for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 25189fdc4e1SMike Barcroft if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */ 2528fae3551SRodney W. Grimes isdir = *map++; 2538fae3551SRodney W. Grimes else 2548fae3551SRodney W. Grimes isdir >>= 1; 255801382faSDavid E. O'Brien /* 256801382faSDavid E. O'Brien * If a directory has been removed from usedinomap, it 257801382faSDavid E. O'Brien * either has the nodump flag set, or has inherited 258801382faSDavid E. O'Brien * it. Although a directory can't be in dumpinomap if 259801382faSDavid E. O'Brien * it isn't in usedinomap, we have to go through it to 260801382faSDavid E. O'Brien * propagate the nodump flag. 261801382faSDavid E. O'Brien */ 2622c8094f3SJordan K. Hubbard nodump = !nonodump && (TSTINO(ino, usedinomap) == 0); 263801382faSDavid E. O'Brien if ((isdir & 1) == 0 || (TSTINO(ino, dumpinomap) && !nodump)) 2648fae3551SRodney W. Grimes continue; 2651c85e6a3SKirk McKusick dp = getino(ino, &i); 2661c85e6a3SKirk McKusick /* 2671c85e6a3SKirk McKusick * inode buf may change in searchdir(). 2681c85e6a3SKirk McKusick */ 2691c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 2701c85e6a3SKirk McKusick di.dp1 = dp->dp1; 2711c85e6a3SKirk McKusick else 2721c85e6a3SKirk McKusick di.dp2 = dp->dp2; 2731c85e6a3SKirk McKusick filesize = DIP(&di, di_size); 2748fae3551SRodney W. Grimes for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) { 2751c85e6a3SKirk McKusick if (DIP(&di, di_db[i]) != 0) 2761c85e6a3SKirk McKusick ret |= searchdir(ino, DIP(&di, di_db[i]), 2771c85e6a3SKirk McKusick (long)sblksize(sblock, DIP(dp, di_size), i), 278801382faSDavid E. O'Brien filesize, tapesize, nodump); 2798fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2808fae3551SRodney W. Grimes filesize = 0; 2818fae3551SRodney W. Grimes else 2828fae3551SRodney W. Grimes filesize -= sblock->fs_bsize; 2838fae3551SRodney W. Grimes } 2848fae3551SRodney W. Grimes for (i = 0; filesize > 0 && i < NIADDR; i++) { 2851c85e6a3SKirk McKusick if (DIP(&di, di_ib[i]) == 0) 2868fae3551SRodney W. Grimes continue; 2871c85e6a3SKirk McKusick ret |= dirindir(ino, DIP(&di, di_ib[i]), i, &filesize, 288801382faSDavid E. O'Brien tapesize, nodump); 2898fae3551SRodney W. Grimes } 2908fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) { 2918fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 2928fae3551SRodney W. Grimes *tapesize += blockest(dp); 2938fae3551SRodney W. Grimes change = 1; 2948fae3551SRodney W. Grimes continue; 2958fae3551SRodney W. Grimes } 296801382faSDavid E. O'Brien if (nodump) { 297801382faSDavid E. O'Brien if (ret & HASSUBDIRS) 298801382faSDavid E. O'Brien change = 1; /* subdirs inherit nodump */ 299801382faSDavid E. O'Brien CLRINO(ino, dumpdirmap); 300801382faSDavid E. O'Brien } else if ((ret & HASSUBDIRS) == 0) 3018fae3551SRodney W. Grimes if (!TSTINO(ino, dumpinomap)) { 3028fae3551SRodney W. Grimes CLRINO(ino, dumpdirmap); 3038fae3551SRodney W. Grimes change = 1; 3048fae3551SRodney W. Grimes } 3058fae3551SRodney W. Grimes } 3068fae3551SRodney W. Grimes return (change); 3078fae3551SRodney W. Grimes } 3088fae3551SRodney W. Grimes 3098fae3551SRodney W. Grimes /* 3108fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be searched 3118fae3551SRodney W. Grimes * as directories. Quit as soon as any entry is found that will 3128fae3551SRodney W. Grimes * require the directory to be dumped. 3138fae3551SRodney W. Grimes */ 3148fae3551SRodney W. Grimes static int 3151c85e6a3SKirk McKusick dirindir( 3161c85e6a3SKirk McKusick ino_t ino, 3171c85e6a3SKirk McKusick ufs2_daddr_t blkno, 3181c85e6a3SKirk McKusick int ind_level, 3191c85e6a3SKirk McKusick long *filesize, 3201c85e6a3SKirk McKusick long *tapesize, 3211c85e6a3SKirk McKusick int nodump) 3228fae3551SRodney W. Grimes { 3237680e41cSIan Dowse union { 3247680e41cSIan Dowse ufs1_daddr_t ufs1[MAXBSIZE / sizeof(ufs1_daddr_t)]; 3257680e41cSIan Dowse ufs2_daddr_t ufs2[MAXBSIZE / sizeof(ufs2_daddr_t)]; 3267680e41cSIan Dowse } idblk; 3278fae3551SRodney W. Grimes int ret = 0; 328d2334e27SIan Dowse int i; 3298fae3551SRodney W. Grimes 3307680e41cSIan Dowse bread(fsbtodb(sblock, blkno), (char *)&idblk, (int)sblock->fs_bsize); 3318fae3551SRodney W. Grimes if (ind_level <= 0) { 3328fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 3331c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 3347680e41cSIan Dowse blkno = idblk.ufs1[i]; 3351c85e6a3SKirk McKusick else 3367680e41cSIan Dowse blkno = idblk.ufs2[i]; 3378fae3551SRodney W. Grimes if (blkno != 0) 3388fae3551SRodney W. Grimes ret |= searchdir(ino, blkno, sblock->fs_bsize, 339801382faSDavid E. O'Brien *filesize, tapesize, nodump); 3408fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 3418fae3551SRodney W. Grimes *filesize = 0; 3428fae3551SRodney W. Grimes else 3438fae3551SRodney W. Grimes *filesize -= sblock->fs_bsize; 3448fae3551SRodney W. Grimes } 3458fae3551SRodney W. Grimes return (ret); 3468fae3551SRodney W. Grimes } 3478fae3551SRodney W. Grimes ind_level--; 3488fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 3491c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 3507680e41cSIan Dowse blkno = idblk.ufs1[i]; 3511c85e6a3SKirk McKusick else 3527680e41cSIan Dowse blkno = idblk.ufs2[i]; 3538fae3551SRodney W. Grimes if (blkno != 0) 354801382faSDavid E. O'Brien ret |= dirindir(ino, blkno, ind_level, filesize, 355801382faSDavid E. O'Brien tapesize, nodump); 3568fae3551SRodney W. Grimes } 3578fae3551SRodney W. Grimes return (ret); 3588fae3551SRodney W. Grimes } 3598fae3551SRodney W. Grimes 3608fae3551SRodney W. Grimes /* 3618fae3551SRodney W. Grimes * Scan a disk block containing directory information looking to see if 3628fae3551SRodney W. Grimes * any of the entries are on the dump list and to see if the directory 3638fae3551SRodney W. Grimes * contains any subdirectories. 3648fae3551SRodney W. Grimes */ 3658fae3551SRodney W. Grimes static int 3661c85e6a3SKirk McKusick searchdir( 3671c85e6a3SKirk McKusick ino_t ino, 3681c85e6a3SKirk McKusick ufs2_daddr_t blkno, 3691c85e6a3SKirk McKusick long size, 3701c85e6a3SKirk McKusick long filesize, 3711c85e6a3SKirk McKusick long *tapesize, 3721c85e6a3SKirk McKusick int nodump) 3738fae3551SRodney W. Grimes { 3741c85e6a3SKirk McKusick int mode; 375d2334e27SIan Dowse struct direct *dp; 3761c85e6a3SKirk McKusick union dinode *ip; 377d2334e27SIan Dowse long loc, ret = 0; 3781c85e6a3SKirk McKusick static caddr_t dblk; 3798fae3551SRodney W. Grimes 3801c85e6a3SKirk McKusick if (dblk == NULL && (dblk = malloc(sblock->fs_bsize)) == NULL) 3811c85e6a3SKirk McKusick quit("searchdir: cannot allocate indirect memory.\n"); 3828fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), dblk, (int)size); 3838fae3551SRodney W. Grimes if (filesize < size) 3848fae3551SRodney W. Grimes size = filesize; 3858fae3551SRodney W. Grimes for (loc = 0; loc < size; ) { 3868fae3551SRodney W. Grimes dp = (struct direct *)(dblk + loc); 3878fae3551SRodney W. Grimes if (dp->d_reclen == 0) { 3888fae3551SRodney W. Grimes msg("corrupted directory, inumber %d\n", ino); 3898fae3551SRodney W. Grimes break; 3908fae3551SRodney W. Grimes } 3918fae3551SRodney W. Grimes loc += dp->d_reclen; 3928fae3551SRodney W. Grimes if (dp->d_ino == 0) 3938fae3551SRodney W. Grimes continue; 3948fae3551SRodney W. Grimes if (dp->d_name[0] == '.') { 3958fae3551SRodney W. Grimes if (dp->d_name[1] == '\0') 3968fae3551SRodney W. Grimes continue; 3978fae3551SRodney W. Grimes if (dp->d_name[1] == '.' && dp->d_name[2] == '\0') 3988fae3551SRodney W. Grimes continue; 3998fae3551SRodney W. Grimes } 400801382faSDavid E. O'Brien if (nodump) { 4011c85e6a3SKirk McKusick ip = getino(dp->d_ino, &mode); 402801382faSDavid E. O'Brien if (TSTINO(dp->d_ino, dumpinomap)) { 403801382faSDavid E. O'Brien CLRINO(dp->d_ino, dumpinomap); 404801382faSDavid E. O'Brien *tapesize -= blockest(ip); 405801382faSDavid E. O'Brien } 40601629855SDavid E. O'Brien /* 40701629855SDavid E. O'Brien * Add back to dumpdirmap and remove from usedinomap 40801629855SDavid E. O'Brien * to propagate nodump. 40901629855SDavid E. O'Brien */ 4101c85e6a3SKirk McKusick if (mode == IFDIR) { 411801382faSDavid E. O'Brien SETINO(dp->d_ino, dumpdirmap); 41201629855SDavid E. O'Brien CLRINO(dp->d_ino, usedinomap); 413801382faSDavid E. O'Brien ret |= HASSUBDIRS; 414801382faSDavid E. O'Brien } 415801382faSDavid E. O'Brien } else { 4168fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpinomap)) { 4178fae3551SRodney W. Grimes ret |= HASDUMPEDFILE; 4188fae3551SRodney W. Grimes if (ret & HASSUBDIRS) 4198fae3551SRodney W. Grimes break; 4208fae3551SRodney W. Grimes } 4218fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpdirmap)) { 4228fae3551SRodney W. Grimes ret |= HASSUBDIRS; 4238fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 4248fae3551SRodney W. Grimes break; 4258fae3551SRodney W. Grimes } 4268fae3551SRodney W. Grimes } 427801382faSDavid E. O'Brien } 4288fae3551SRodney W. Grimes return (ret); 4298fae3551SRodney W. Grimes } 4308fae3551SRodney W. Grimes 4318fae3551SRodney W. Grimes /* 4328fae3551SRodney W. Grimes * Dump passes 3 and 4. 4338fae3551SRodney W. Grimes * 4348fae3551SRodney W. Grimes * Dump the contents of an inode to tape. 4358fae3551SRodney W. Grimes */ 4368fae3551SRodney W. Grimes void 4371c85e6a3SKirk McKusick dumpino(union dinode *dp, ino_t ino) 4388fae3551SRodney W. Grimes { 4398fae3551SRodney W. Grimes int ind_level, cnt; 4401c85e6a3SKirk McKusick off_t size; 4418fae3551SRodney W. Grimes char buf[TP_BSIZE]; 4428fae3551SRodney W. Grimes 4438fae3551SRodney W. Grimes if (newtape) { 4448fae3551SRodney W. Grimes newtape = 0; 4458fae3551SRodney W. Grimes dumpmap(dumpinomap, TS_BITS, ino); 4468fae3551SRodney W. Grimes } 4478fae3551SRodney W. Grimes CLRINO(ino, dumpinomap); 448be5b1425SKirk McKusick /* 449be5b1425SKirk McKusick * Zero out the size of a snapshot so that it will be dumped 450be5b1425SKirk McKusick * as a zero length file. 451be5b1425SKirk McKusick */ 452be5b1425SKirk McKusick if ((DIP(dp, di_flags) & SF_SNAPSHOT) != 0) { 453be5b1425SKirk McKusick DIP(dp, di_size) = 0; 454be5b1425SKirk McKusick DIP(dp, di_flags) &= ~SF_SNAPSHOT; 455be5b1425SKirk McKusick } 4561c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) { 4571c85e6a3SKirk McKusick spcl.c_mode = dp->dp1.di_mode; 4581c85e6a3SKirk McKusick spcl.c_size = dp->dp1.di_size; 4591c85e6a3SKirk McKusick spcl.c_atime = _time32_to_time(dp->dp1.di_atime); 4601c85e6a3SKirk McKusick spcl.c_atimensec = dp->dp1.di_atimensec; 4611c85e6a3SKirk McKusick spcl.c_mtime = _time32_to_time(dp->dp1.di_mtime); 4621c85e6a3SKirk McKusick spcl.c_mtimensec = dp->dp1.di_mtimensec; 463fb36a3d8SKirk McKusick spcl.c_birthtime = 0; 464fb36a3d8SKirk McKusick spcl.c_birthtimensec = 0; 4651c85e6a3SKirk McKusick spcl.c_rdev = dp->dp1.di_rdev; 4661c85e6a3SKirk McKusick spcl.c_file_flags = dp->dp1.di_flags; 4671c85e6a3SKirk McKusick spcl.c_uid = dp->dp1.di_uid; 4681c85e6a3SKirk McKusick spcl.c_gid = dp->dp1.di_gid; 4691c85e6a3SKirk McKusick } else { 4701c85e6a3SKirk McKusick spcl.c_mode = dp->dp2.di_mode; 4711c85e6a3SKirk McKusick spcl.c_size = dp->dp2.di_size; 4721c85e6a3SKirk McKusick spcl.c_atime = _time64_to_time(dp->dp2.di_atime); 4731c85e6a3SKirk McKusick spcl.c_atimensec = dp->dp2.di_atimensec; 4741c85e6a3SKirk McKusick spcl.c_mtime = _time64_to_time(dp->dp2.di_mtime); 4751c85e6a3SKirk McKusick spcl.c_mtimensec = dp->dp2.di_mtimensec; 476fb36a3d8SKirk McKusick spcl.c_birthtime = _time64_to_time(dp->dp2.di_birthtime); 477fb36a3d8SKirk McKusick spcl.c_birthtimensec = dp->dp2.di_birthnsec; 4781c85e6a3SKirk McKusick spcl.c_rdev = dp->dp2.di_rdev; 4791c85e6a3SKirk McKusick spcl.c_file_flags = dp->dp2.di_flags; 4801c85e6a3SKirk McKusick spcl.c_uid = dp->dp2.di_uid; 4811c85e6a3SKirk McKusick spcl.c_gid = dp->dp2.di_gid; 4821c85e6a3SKirk McKusick } 4838fae3551SRodney W. Grimes spcl.c_type = TS_INODE; 4848fae3551SRodney W. Grimes spcl.c_count = 0; 4851c85e6a3SKirk McKusick switch (DIP(dp, di_mode) & S_IFMT) { 4868fae3551SRodney W. Grimes 4878fae3551SRodney W. Grimes case 0: 4888fae3551SRodney W. Grimes /* 4898fae3551SRodney W. Grimes * Freed inode. 4908fae3551SRodney W. Grimes */ 4918fae3551SRodney W. Grimes return; 4928fae3551SRodney W. Grimes 4938fae3551SRodney W. Grimes case S_IFLNK: 4948fae3551SRodney W. Grimes /* 4958fae3551SRodney W. Grimes * Check for short symbolic link. 4968fae3551SRodney W. Grimes */ 4971c85e6a3SKirk McKusick if (DIP(dp, di_size) > 0 && 4981c85e6a3SKirk McKusick DIP(dp, di_size) < sblock->fs_maxsymlinklen) { 4998fae3551SRodney W. Grimes spcl.c_addr[0] = 1; 5008fae3551SRodney W. Grimes spcl.c_count = 1; 5018fae3551SRodney W. Grimes writeheader(ino); 5021c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5031c85e6a3SKirk McKusick memmove(buf, (caddr_t)dp->dp1.di_db, 5041c85e6a3SKirk McKusick (u_long)DIP(dp, di_size)); 5051c85e6a3SKirk McKusick else 5061c85e6a3SKirk McKusick memmove(buf, (caddr_t)dp->dp2.di_db, 5071c85e6a3SKirk McKusick (u_long)DIP(dp, di_size)); 5081c85e6a3SKirk McKusick buf[DIP(dp, di_size)] = '\0'; 5098fae3551SRodney W. Grimes writerec(buf, 0); 5108fae3551SRodney W. Grimes return; 5118fae3551SRodney W. Grimes } 5127fed38d0SPhilippe Charnier /* FALLTHROUGH */ 5138fae3551SRodney W. Grimes 5148fae3551SRodney W. Grimes case S_IFDIR: 5158fae3551SRodney W. Grimes case S_IFREG: 5161c85e6a3SKirk McKusick if (DIP(dp, di_size) > 0) 5178fae3551SRodney W. Grimes break; 5187fed38d0SPhilippe Charnier /* FALLTHROUGH */ 5198fae3551SRodney W. Grimes 5208fae3551SRodney W. Grimes case S_IFIFO: 5218fae3551SRodney W. Grimes case S_IFSOCK: 5228fae3551SRodney W. Grimes case S_IFCHR: 5238fae3551SRodney W. Grimes case S_IFBLK: 5248fae3551SRodney W. Grimes writeheader(ino); 5258fae3551SRodney W. Grimes return; 5268fae3551SRodney W. Grimes 5278fae3551SRodney W. Grimes default: 5281c85e6a3SKirk McKusick msg("Warning: undefined file type 0%o\n", 5291c85e6a3SKirk McKusick DIP(dp, di_mode) & IFMT); 5308fae3551SRodney W. Grimes return; 5318fae3551SRodney W. Grimes } 5321c85e6a3SKirk McKusick if (DIP(dp, di_size) > NDADDR * sblock->fs_bsize) 5338fae3551SRodney W. Grimes cnt = NDADDR * sblock->fs_frag; 5348fae3551SRodney W. Grimes else 5351c85e6a3SKirk McKusick cnt = howmany(DIP(dp, di_size), sblock->fs_fsize); 5361c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5371c85e6a3SKirk McKusick ufs1_blksout(&dp->dp1.di_db[0], cnt, ino); 5381c85e6a3SKirk McKusick else 5391c85e6a3SKirk McKusick ufs2_blksout(&dp->dp2.di_db[0], cnt, ino); 5401c85e6a3SKirk McKusick if ((size = DIP(dp, di_size) - NDADDR * sblock->fs_bsize) <= 0) 5418fae3551SRodney W. Grimes return; 5428fae3551SRodney W. Grimes for (ind_level = 0; ind_level < NIADDR; ind_level++) { 5431c85e6a3SKirk McKusick dmpindir(ino, DIP(dp, di_ib[ind_level]), ind_level, &size); 5448fae3551SRodney W. Grimes if (size <= 0) 5458fae3551SRodney W. Grimes return; 5468fae3551SRodney W. Grimes } 5478fae3551SRodney W. Grimes } 5488fae3551SRodney W. Grimes 5498fae3551SRodney W. Grimes /* 5508fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be dumped. 5518fae3551SRodney W. Grimes */ 5528fae3551SRodney W. Grimes static void 5531c85e6a3SKirk McKusick dmpindir(ino_t ino, ufs2_daddr_t blk, int ind_level, off_t *size) 5548fae3551SRodney W. Grimes { 5557680e41cSIan Dowse union { 5567680e41cSIan Dowse ufs1_daddr_t ufs1[MAXBSIZE / sizeof(ufs1_daddr_t)]; 5577680e41cSIan Dowse ufs2_daddr_t ufs2[MAXBSIZE / sizeof(ufs2_daddr_t)]; 5587680e41cSIan Dowse } idblk; 5598fae3551SRodney W. Grimes int i, cnt; 5608fae3551SRodney W. Grimes 5618fae3551SRodney W. Grimes if (blk != 0) 5627680e41cSIan Dowse bread(fsbtodb(sblock, blk), (char *)&idblk, 5637680e41cSIan Dowse (int)sblock->fs_bsize); 5648fae3551SRodney W. Grimes else 5657680e41cSIan Dowse memset(&idblk, 0, sblock->fs_bsize); 5668fae3551SRodney W. Grimes if (ind_level <= 0) { 5678fae3551SRodney W. Grimes if (*size < NINDIR(sblock) * sblock->fs_bsize) 5688fae3551SRodney W. Grimes cnt = howmany(*size, sblock->fs_fsize); 5698fae3551SRodney W. Grimes else 5708fae3551SRodney W. Grimes cnt = NINDIR(sblock) * sblock->fs_frag; 5718fae3551SRodney W. Grimes *size -= NINDIR(sblock) * sblock->fs_bsize; 5721c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5737680e41cSIan Dowse ufs1_blksout(idblk.ufs1, cnt, ino); 5741c85e6a3SKirk McKusick else 5757680e41cSIan Dowse ufs2_blksout(idblk.ufs2, cnt, ino); 5768fae3551SRodney W. Grimes return; 5778fae3551SRodney W. Grimes } 5788fae3551SRodney W. Grimes ind_level--; 5798fae3551SRodney W. Grimes for (i = 0; i < NINDIR(sblock); i++) { 5801c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5817680e41cSIan Dowse dmpindir(ino, idblk.ufs1[i], ind_level, size); 5821c85e6a3SKirk McKusick else 5837680e41cSIan Dowse dmpindir(ino, idblk.ufs2[i], ind_level, size); 5848fae3551SRodney W. Grimes if (*size <= 0) 5858fae3551SRodney W. Grimes return; 5868fae3551SRodney W. Grimes } 5878fae3551SRodney W. Grimes } 5888fae3551SRodney W. Grimes 5898fae3551SRodney W. Grimes /* 5908fae3551SRodney W. Grimes * Collect up the data into tape record sized buffers and output them. 5918fae3551SRodney W. Grimes */ 5928fae3551SRodney W. Grimes void 5931c85e6a3SKirk McKusick ufs1_blksout(ufs1_daddr_t *blkp, int frags, ino_t ino) 5948fae3551SRodney W. Grimes { 5951c85e6a3SKirk McKusick ufs1_daddr_t *bp; 5961c85e6a3SKirk McKusick int i, j, count, blks, tbperdb; 5971c85e6a3SKirk McKusick 5981c85e6a3SKirk McKusick blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 5991c85e6a3SKirk McKusick tbperdb = sblock->fs_bsize >> tp_bshift; 6001c85e6a3SKirk McKusick for (i = 0; i < blks; i += TP_NINDIR) { 6011c85e6a3SKirk McKusick if (i + TP_NINDIR > blks) 6021c85e6a3SKirk McKusick count = blks; 6031c85e6a3SKirk McKusick else 6041c85e6a3SKirk McKusick count = i + TP_NINDIR; 6051c85e6a3SKirk McKusick for (j = i; j < count; j++) 6061c85e6a3SKirk McKusick if (blkp[j / tbperdb] != 0) 6071c85e6a3SKirk McKusick spcl.c_addr[j - i] = 1; 6081c85e6a3SKirk McKusick else 6091c85e6a3SKirk McKusick spcl.c_addr[j - i] = 0; 6101c85e6a3SKirk McKusick spcl.c_count = count - i; 6111c85e6a3SKirk McKusick writeheader(ino); 6121c85e6a3SKirk McKusick bp = &blkp[i / tbperdb]; 6131c85e6a3SKirk McKusick for (j = i; j < count; j += tbperdb, bp++) 6141c85e6a3SKirk McKusick if (*bp != 0) { 6151c85e6a3SKirk McKusick if (j + tbperdb <= count) 6161c85e6a3SKirk McKusick dumpblock(*bp, (int)sblock->fs_bsize); 6171c85e6a3SKirk McKusick else 6181c85e6a3SKirk McKusick dumpblock(*bp, (count - j) * TP_BSIZE); 6191c85e6a3SKirk McKusick } 6201c85e6a3SKirk McKusick spcl.c_type = TS_ADDR; 6211c85e6a3SKirk McKusick } 6221c85e6a3SKirk McKusick } 6231c85e6a3SKirk McKusick 6241c85e6a3SKirk McKusick /* 6251c85e6a3SKirk McKusick * Collect up the data into tape record sized buffers and output them. 6261c85e6a3SKirk McKusick */ 6271c85e6a3SKirk McKusick void 6281c85e6a3SKirk McKusick ufs2_blksout(ufs2_daddr_t *blkp, int frags, ino_t ino) 6291c85e6a3SKirk McKusick { 6301c85e6a3SKirk McKusick ufs2_daddr_t *bp; 6318fae3551SRodney W. Grimes int i, j, count, blks, tbperdb; 6328fae3551SRodney W. Grimes 6338fae3551SRodney W. Grimes blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 6348fae3551SRodney W. Grimes tbperdb = sblock->fs_bsize >> tp_bshift; 6358fae3551SRodney W. Grimes for (i = 0; i < blks; i += TP_NINDIR) { 6368fae3551SRodney W. Grimes if (i + TP_NINDIR > blks) 6378fae3551SRodney W. Grimes count = blks; 6388fae3551SRodney W. Grimes else 6398fae3551SRodney W. Grimes count = i + TP_NINDIR; 6408fae3551SRodney W. Grimes for (j = i; j < count; j++) 6418fae3551SRodney W. Grimes if (blkp[j / tbperdb] != 0) 6428fae3551SRodney W. Grimes spcl.c_addr[j - i] = 1; 6438fae3551SRodney W. Grimes else 6448fae3551SRodney W. Grimes spcl.c_addr[j - i] = 0; 6458fae3551SRodney W. Grimes spcl.c_count = count - i; 6468fae3551SRodney W. Grimes writeheader(ino); 6478fae3551SRodney W. Grimes bp = &blkp[i / tbperdb]; 6488fae3551SRodney W. Grimes for (j = i; j < count; j += tbperdb, bp++) 64916c4e408SBill Fumerola if (*bp != 0) { 6508fae3551SRodney W. Grimes if (j + tbperdb <= count) 6518fae3551SRodney W. Grimes dumpblock(*bp, (int)sblock->fs_bsize); 6528fae3551SRodney W. Grimes else 6538fae3551SRodney W. Grimes dumpblock(*bp, (count - j) * TP_BSIZE); 65416c4e408SBill Fumerola } 6558fae3551SRodney W. Grimes spcl.c_type = TS_ADDR; 6568fae3551SRodney W. Grimes } 6578fae3551SRodney W. Grimes } 6588fae3551SRodney W. Grimes 6598fae3551SRodney W. Grimes /* 6608fae3551SRodney W. Grimes * Dump a map to the tape. 6618fae3551SRodney W. Grimes */ 6628fae3551SRodney W. Grimes void 6632db673abSWarner Losh dumpmap(char *map, int type, ino_t ino) 6648fae3551SRodney W. Grimes { 665d2334e27SIan Dowse int i; 6668fae3551SRodney W. Grimes char *cp; 6678fae3551SRodney W. Grimes 6688fae3551SRodney W. Grimes spcl.c_type = type; 6698fae3551SRodney W. Grimes spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE); 6708fae3551SRodney W. Grimes writeheader(ino); 6718fae3551SRodney W. Grimes for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE) 6728fae3551SRodney W. Grimes writerec(cp, 0); 6738fae3551SRodney W. Grimes } 6748fae3551SRodney W. Grimes 6758fae3551SRodney W. Grimes /* 6768fae3551SRodney W. Grimes * Write a header record to the dump tape. 6778fae3551SRodney W. Grimes */ 6788fae3551SRodney W. Grimes void 6792db673abSWarner Losh writeheader(ino_t ino) 6808fae3551SRodney W. Grimes { 681d2334e27SIan Dowse int32_t sum, cnt, *lp; 6828fae3551SRodney W. Grimes 6838fae3551SRodney W. Grimes spcl.c_inumber = ino; 6841c85e6a3SKirk McKusick spcl.c_magic = FS_UFS2_MAGIC; 6858fae3551SRodney W. Grimes spcl.c_checksum = 0; 68697b465b1SDima Ruban lp = (int32_t *)&spcl; 6878fae3551SRodney W. Grimes sum = 0; 68897b465b1SDima Ruban cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t)); 6898fae3551SRodney W. Grimes while (--cnt >= 0) { 6908fae3551SRodney W. Grimes sum += *lp++; 6918fae3551SRodney W. Grimes sum += *lp++; 6928fae3551SRodney W. Grimes sum += *lp++; 6938fae3551SRodney W. Grimes sum += *lp++; 6948fae3551SRodney W. Grimes } 6958fae3551SRodney W. Grimes spcl.c_checksum = CHECKSUM - sum; 6968fae3551SRodney W. Grimes writerec((char *)&spcl, 1); 6978fae3551SRodney W. Grimes } 6988fae3551SRodney W. Grimes 6991c85e6a3SKirk McKusick union dinode * 7001c85e6a3SKirk McKusick getino(ino_t inum, int *modep) 7018fae3551SRodney W. Grimes { 7021c85e6a3SKirk McKusick static ino_t minino, maxino; 7031c85e6a3SKirk McKusick static caddr_t inoblock; 7041c85e6a3SKirk McKusick struct ufs1_dinode *dp1; 7051c85e6a3SKirk McKusick struct ufs2_dinode *dp2; 7068fae3551SRodney W. Grimes 7071c85e6a3SKirk McKusick if (inoblock == NULL && (inoblock = malloc(sblock->fs_bsize)) == NULL) 7081c85e6a3SKirk McKusick quit("cannot allocate inode memory.\n"); 7098fae3551SRodney W. Grimes curino = inum; 7108fae3551SRodney W. Grimes if (inum >= minino && inum < maxino) 7111c85e6a3SKirk McKusick goto gotit; 7121c85e6a3SKirk McKusick bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), inoblock, 7138fae3551SRodney W. Grimes (int)sblock->fs_bsize); 7148fae3551SRodney W. Grimes minino = inum - (inum % INOPB(sblock)); 7158fae3551SRodney W. Grimes maxino = minino + INOPB(sblock); 7161c85e6a3SKirk McKusick gotit: 7171c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) { 7181c85e6a3SKirk McKusick dp1 = &((struct ufs1_dinode *)inoblock)[inum - minino]; 7191c85e6a3SKirk McKusick *modep = (dp1->di_mode & IFMT); 7201c85e6a3SKirk McKusick return ((union dinode *)dp1); 7211c85e6a3SKirk McKusick } 7221c85e6a3SKirk McKusick dp2 = &((struct ufs2_dinode *)inoblock)[inum - minino]; 7231c85e6a3SKirk McKusick *modep = (dp2->di_mode & IFMT); 7241c85e6a3SKirk McKusick return ((union dinode *)dp2); 7258fae3551SRodney W. Grimes } 7268fae3551SRodney W. Grimes 7278fae3551SRodney W. Grimes /* 7288fae3551SRodney W. Grimes * Read a chunk of data from the disk. 7298fae3551SRodney W. Grimes * Try to recover from hard errors by reading in sector sized pieces. 7308fae3551SRodney W. Grimes * Error recovery is attempted at most BREADEMAX times before seeking 7318fae3551SRodney W. Grimes * consent from the operator to continue. 7328fae3551SRodney W. Grimes */ 7338fae3551SRodney W. Grimes int breaderrors = 0; 7348fae3551SRodney W. Grimes #define BREADEMAX 32 7358fae3551SRodney W. Grimes 7368fae3551SRodney W. Grimes void 7371c85e6a3SKirk McKusick bread(ufs2_daddr_t blkno, char *buf, int size) 7388fae3551SRodney W. Grimes { 7398fae3551SRodney W. Grimes int cnt, i; 7408fae3551SRodney W. Grimes 7418fae3551SRodney W. Grimes loop: 7425941e412SMatthew Dillon cnt = cread(diskfd, buf, size, ((off_t)blkno << dev_bshift)); 7435941e412SMatthew Dillon if (cnt == size) 7448fae3551SRodney W. Grimes return; 7458fae3551SRodney W. Grimes if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) { 7468fae3551SRodney W. Grimes /* 7478fae3551SRodney W. Grimes * Trying to read the final fragment. 7488fae3551SRodney W. Grimes * 7498fae3551SRodney W. Grimes * NB - dump only works in TP_BSIZE blocks, hence 7508fae3551SRodney W. Grimes * rounds `dev_bsize' fragments up to TP_BSIZE pieces. 7518fae3551SRodney W. Grimes * It should be smarter about not actually trying to 7528fae3551SRodney W. Grimes * read more than it can get, but for the time being 7538fae3551SRodney W. Grimes * we punt and scale back the read only when it gets 7548fae3551SRodney W. Grimes * us into trouble. (mkm 9/25/83) 7558fae3551SRodney W. Grimes */ 7568fae3551SRodney W. Grimes size -= dev_bsize; 7578fae3551SRodney W. Grimes goto loop; 7588fae3551SRodney W. Grimes } 7598fae3551SRodney W. Grimes if (cnt == -1) 760617dbd3cSIan Dowse msg("read error from %s: %s: [block %jd]: count=%d\n", 761617dbd3cSIan Dowse disk, strerror(errno), (intmax_t)blkno, size); 7628fae3551SRodney W. Grimes else 763617dbd3cSIan Dowse msg("short read error from %s: [block %jd]: count=%d, got=%d\n", 764617dbd3cSIan Dowse disk, (intmax_t)blkno, size, cnt); 7658fae3551SRodney W. Grimes if (++breaderrors > BREADEMAX) { 766325167c3SIan Dowse msg("More than %d block read errors from %s\n", 7678fae3551SRodney W. Grimes BREADEMAX, disk); 7688fae3551SRodney W. Grimes broadcast("DUMP IS AILING!\n"); 7698fae3551SRodney W. Grimes msg("This is an unrecoverable error.\n"); 7708fae3551SRodney W. Grimes if (!query("Do you want to attempt to continue?")){ 7718fae3551SRodney W. Grimes dumpabort(0); 7728fae3551SRodney W. Grimes /*NOTREACHED*/ 7738fae3551SRodney W. Grimes } else 7748fae3551SRodney W. Grimes breaderrors = 0; 7758fae3551SRodney W. Grimes } 7768fae3551SRodney W. Grimes /* 7775941e412SMatthew Dillon * Zero buffer, then try to read each sector of buffer separately, 7785941e412SMatthew Dillon * and bypass the cache. 7798fae3551SRodney W. Grimes */ 780a37c38b8SPeter Wemm memset(buf, 0, size); 7818fae3551SRodney W. Grimes for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) { 782be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, (int)dev_bsize, 783be1bf707SMike Heffner ((off_t)blkno << dev_bshift))) == dev_bsize) 7848fae3551SRodney W. Grimes continue; 7858fae3551SRodney W. Grimes if (cnt == -1) { 786617dbd3cSIan Dowse msg("read error from %s: %s: [sector %jd]: count=%ld\n", 787617dbd3cSIan Dowse disk, strerror(errno), (intmax_t)blkno, dev_bsize); 7888fae3551SRodney W. Grimes continue; 7898fae3551SRodney W. Grimes } 790617dbd3cSIan Dowse msg("short read from %s: [sector %jd]: count=%ld, got=%d\n", 791617dbd3cSIan Dowse disk, (intmax_t)blkno, dev_bsize, cnt); 7928fae3551SRodney W. Grimes } 7938fae3551SRodney W. Grimes } 794