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[] = 3916c4e408SBill Fumerola "$Id: traverse.c,v 1.8 1998/10/27 04:01:08 dima Exp $"; 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 #ifdef sunos 458fae3551SRodney W. Grimes #include <sys/vnode.h> 468fae3551SRodney W. Grimes 478fae3551SRodney W. Grimes #include <ufs/fs.h> 488fae3551SRodney W. Grimes #include <ufs/fsdir.h> 498fae3551SRodney W. Grimes #include <ufs/inode.h> 508fae3551SRodney W. Grimes #else 518fae3551SRodney W. Grimes #include <ufs/ufs/dir.h> 528fae3551SRodney W. Grimes #include <ufs/ufs/dinode.h> 53a37c38b8SPeter Wemm #include <ufs/ffs/fs.h> 548fae3551SRodney W. Grimes #endif 558fae3551SRodney W. Grimes 568fae3551SRodney W. Grimes #include <protocols/dumprestore.h> 578fae3551SRodney W. Grimes 588fae3551SRodney W. Grimes #include <ctype.h> 598fae3551SRodney W. Grimes #include <stdio.h> 608fae3551SRodney W. Grimes #ifdef __STDC__ 618fae3551SRodney W. Grimes #include <string.h> 628fae3551SRodney W. Grimes #include <unistd.h> 638fae3551SRodney W. Grimes #endif 648fae3551SRodney W. Grimes 658fae3551SRodney W. Grimes #include "dump.h" 668fae3551SRodney W. Grimes 678fae3551SRodney W. Grimes #define HASDUMPEDFILE 0x1 688fae3551SRodney W. Grimes #define HASSUBDIRS 0x2 698fae3551SRodney W. Grimes 708fae3551SRodney W. Grimes #ifdef FS_44INODEFMT 718fae3551SRodney W. Grimes typedef quad_t fsizeT; 728fae3551SRodney W. Grimes #else 738fae3551SRodney W. Grimes typedef long fsizeT; 748fae3551SRodney W. Grimes #endif 758fae3551SRodney W. Grimes 768fae3551SRodney W. Grimes static int dirindir __P((ino_t ino, daddr_t blkno, int level, long *size)); 778fae3551SRodney W. Grimes static void dmpindir __P((ino_t ino, daddr_t blk, int level, fsizeT *size)); 788fae3551SRodney W. Grimes static int searchdir __P((ino_t ino, daddr_t blkno, long size, long filesize)); 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 888fae3551SRodney W. Grimes blockest(dp) 898fae3551SRodney W. Grimes register struct 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 */ 1078fae3551SRodney W. Grimes blkest = howmany(dbtob(dp->di_blocks), TP_BSIZE); 1088fae3551SRodney W. Grimes sizeest = howmany(dp->di_size, TP_BSIZE); 1098fae3551SRodney W. Grimes if (blkest > sizeest) 1108fae3551SRodney W. Grimes blkest = sizeest; 1118fae3551SRodney W. Grimes if (dp->di_size > sblock->fs_bsize * NDADDR) { 1128fae3551SRodney W. Grimes /* calculate the number of indirect blocks on the dump tape */ 1138fae3551SRodney W. Grimes blkest += 1148fae3551SRodney W. Grimes howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE, 1158fae3551SRodney W. Grimes TP_NINDIR); 1168fae3551SRodney W. Grimes } 1178fae3551SRodney W. Grimes return (blkest + 1); 1188fae3551SRodney W. Grimes } 1198fae3551SRodney W. Grimes 1208fae3551SRodney W. Grimes /* Auxiliary macro to pick up files changed since previous dump. */ 1218fae3551SRodney W. Grimes #define CHANGEDSINCE(dp, t) \ 1228fae3551SRodney W. Grimes ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t)) 1238fae3551SRodney W. Grimes 1248fae3551SRodney W. Grimes /* The WANTTODUMP macro decides whether a file should be dumped. */ 1258fae3551SRodney W. Grimes #ifdef UF_NODUMP 1268fae3551SRodney W. Grimes #define WANTTODUMP(dp) \ 1278fae3551SRodney W. Grimes (CHANGEDSINCE(dp, spcl.c_ddate) && \ 1288fae3551SRodney W. Grimes (nonodump || ((dp)->di_flags & UF_NODUMP) != UF_NODUMP)) 1298fae3551SRodney W. Grimes #else 1308fae3551SRodney W. Grimes #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate) 1318fae3551SRodney W. Grimes #endif 1328fae3551SRodney W. Grimes 1338fae3551SRodney W. Grimes /* 1348fae3551SRodney W. Grimes * Dump pass 1. 1358fae3551SRodney W. Grimes * 1368fae3551SRodney W. Grimes * Walk the inode list for a filesystem to find all allocated inodes 1378fae3551SRodney W. Grimes * that have been modified since the previous dump time. Also, find all 1388fae3551SRodney W. Grimes * the directories in the filesystem. 1398fae3551SRodney W. Grimes */ 1408fae3551SRodney W. Grimes int 1418fae3551SRodney W. Grimes mapfiles(maxino, tapesize) 1428fae3551SRodney W. Grimes ino_t maxino; 1438fae3551SRodney W. Grimes long *tapesize; 1448fae3551SRodney W. Grimes { 1458fae3551SRodney W. Grimes register int mode; 1468fae3551SRodney W. Grimes register ino_t ino; 1478fae3551SRodney W. Grimes register struct dinode *dp; 1488fae3551SRodney W. Grimes int anydirskipped = 0; 1498fae3551SRodney W. Grimes 1508fae3551SRodney W. Grimes for (ino = ROOTINO; ino < maxino; ino++) { 1518fae3551SRodney W. Grimes dp = getino(ino); 1528fae3551SRodney W. Grimes if ((mode = (dp->di_mode & IFMT)) == 0) 1538fae3551SRodney W. Grimes continue; 1548fae3551SRodney W. Grimes SETINO(ino, usedinomap); 1558fae3551SRodney W. Grimes if (mode == IFDIR) 1568fae3551SRodney W. Grimes SETINO(ino, dumpdirmap); 1578fae3551SRodney W. Grimes if (WANTTODUMP(dp)) { 1588fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 1598fae3551SRodney W. Grimes if (mode != IFREG && mode != IFDIR && mode != IFLNK) 1608fae3551SRodney W. Grimes *tapesize += 1; 1618fae3551SRodney W. Grimes else 1628fae3551SRodney W. Grimes *tapesize += blockest(dp); 1638fae3551SRodney W. Grimes continue; 1648fae3551SRodney W. Grimes } 1658fae3551SRodney W. Grimes if (mode == IFDIR) 1668fae3551SRodney W. Grimes anydirskipped = 1; 1678fae3551SRodney W. Grimes } 1688fae3551SRodney W. Grimes /* 1698fae3551SRodney W. Grimes * Restore gets very upset if the root is not dumped, 1708fae3551SRodney W. Grimes * so ensure that it always is dumped. 1718fae3551SRodney W. Grimes */ 1728fae3551SRodney W. Grimes SETINO(ROOTINO, dumpinomap); 1738fae3551SRodney W. Grimes return (anydirskipped); 1748fae3551SRodney W. Grimes } 1758fae3551SRodney W. Grimes 1768fae3551SRodney W. Grimes /* 1778fae3551SRodney W. Grimes * Dump pass 2. 1788fae3551SRodney W. Grimes * 1798fae3551SRodney W. Grimes * Scan each directory on the filesystem to see if it has any modified 1808fae3551SRodney W. Grimes * files in it. If it does, and has not already been added to the dump 1818fae3551SRodney W. Grimes * list (because it was itself modified), then add it. If a directory 1828fae3551SRodney W. Grimes * has not been modified itself, contains no modified files and has no 1838fae3551SRodney W. Grimes * subdirectories, then it can be deleted from the dump list and from 1848fae3551SRodney W. Grimes * the list of directories. By deleting it from the list of directories, 1858fae3551SRodney W. Grimes * its parent may now qualify for the same treatment on this or a later 1868fae3551SRodney W. Grimes * pass using this algorithm. 1878fae3551SRodney W. Grimes */ 1888fae3551SRodney W. Grimes int 1898fae3551SRodney W. Grimes mapdirs(maxino, tapesize) 1908fae3551SRodney W. Grimes ino_t maxino; 1918fae3551SRodney W. Grimes long *tapesize; 1928fae3551SRodney W. Grimes { 1938fae3551SRodney W. Grimes register struct dinode *dp; 1948fae3551SRodney W. Grimes register int i, isdir; 1958fae3551SRodney W. Grimes register char *map; 1968fae3551SRodney W. Grimes register ino_t ino; 1978fae3551SRodney W. Grimes long filesize; 1988fae3551SRodney W. Grimes int ret, change = 0; 1998fae3551SRodney W. Grimes 2008fae3551SRodney W. Grimes isdir = 0; /* XXX just to get gcc to shut up */ 2018fae3551SRodney W. Grimes for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 2028fae3551SRodney W. Grimes if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 2038fae3551SRodney W. Grimes isdir = *map++; 2048fae3551SRodney W. Grimes else 2058fae3551SRodney W. Grimes isdir >>= 1; 2068fae3551SRodney W. Grimes if ((isdir & 1) == 0 || TSTINO(ino, dumpinomap)) 2078fae3551SRodney W. Grimes continue; 2088fae3551SRodney W. Grimes dp = getino(ino); 2098fae3551SRodney W. Grimes filesize = dp->di_size; 2108fae3551SRodney W. Grimes for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) { 2118fae3551SRodney W. Grimes if (dp->di_db[i] != 0) 2128fae3551SRodney W. Grimes ret |= searchdir(ino, dp->di_db[i], 2138fae3551SRodney W. Grimes (long)dblksize(sblock, dp, i), 2148fae3551SRodney W. Grimes filesize); 2158fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2168fae3551SRodney W. Grimes filesize = 0; 2178fae3551SRodney W. Grimes else 2188fae3551SRodney W. Grimes filesize -= sblock->fs_bsize; 2198fae3551SRodney W. Grimes } 2208fae3551SRodney W. Grimes for (i = 0; filesize > 0 && i < NIADDR; i++) { 2218fae3551SRodney W. Grimes if (dp->di_ib[i] == 0) 2228fae3551SRodney W. Grimes continue; 2238fae3551SRodney W. Grimes ret |= dirindir(ino, dp->di_ib[i], i, &filesize); 2248fae3551SRodney W. Grimes } 2258fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) { 2268fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 2278fae3551SRodney W. Grimes *tapesize += blockest(dp); 2288fae3551SRodney W. Grimes change = 1; 2298fae3551SRodney W. Grimes continue; 2308fae3551SRodney W. Grimes } 2318fae3551SRodney W. Grimes if ((ret & HASSUBDIRS) == 0) { 2328fae3551SRodney W. Grimes if (!TSTINO(ino, dumpinomap)) { 2338fae3551SRodney W. Grimes CLRINO(ino, dumpdirmap); 2348fae3551SRodney W. Grimes change = 1; 2358fae3551SRodney W. Grimes } 2368fae3551SRodney W. Grimes } 2378fae3551SRodney W. Grimes } 2388fae3551SRodney W. Grimes return (change); 2398fae3551SRodney W. Grimes } 2408fae3551SRodney W. Grimes 2418fae3551SRodney W. Grimes /* 2428fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be searched 2438fae3551SRodney W. Grimes * as directories. Quit as soon as any entry is found that will 2448fae3551SRodney W. Grimes * require the directory to be dumped. 2458fae3551SRodney W. Grimes */ 2468fae3551SRodney W. Grimes static int 2478fae3551SRodney W. Grimes dirindir(ino, blkno, ind_level, filesize) 2488fae3551SRodney W. Grimes ino_t ino; 2498fae3551SRodney W. Grimes daddr_t blkno; 2508fae3551SRodney W. Grimes int ind_level; 2518fae3551SRodney W. Grimes long *filesize; 2528fae3551SRodney W. Grimes { 2538fae3551SRodney W. Grimes int ret = 0; 2548fae3551SRodney W. Grimes register int i; 2558fae3551SRodney W. Grimes daddr_t idblk[MAXNINDIR]; 2568fae3551SRodney W. Grimes 2578fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize); 2588fae3551SRodney W. Grimes if (ind_level <= 0) { 2598fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 2608fae3551SRodney W. Grimes blkno = idblk[i]; 2618fae3551SRodney W. Grimes if (blkno != 0) 2628fae3551SRodney W. Grimes ret |= searchdir(ino, blkno, sblock->fs_bsize, 2638fae3551SRodney W. Grimes *filesize); 2648fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2658fae3551SRodney W. Grimes *filesize = 0; 2668fae3551SRodney W. Grimes else 2678fae3551SRodney W. Grimes *filesize -= sblock->fs_bsize; 2688fae3551SRodney W. Grimes } 2698fae3551SRodney W. Grimes return (ret); 2708fae3551SRodney W. Grimes } 2718fae3551SRodney W. Grimes ind_level--; 2728fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 2738fae3551SRodney W. Grimes blkno = idblk[i]; 2748fae3551SRodney W. Grimes if (blkno != 0) 2758fae3551SRodney W. Grimes ret |= dirindir(ino, blkno, ind_level, filesize); 2768fae3551SRodney W. Grimes } 2778fae3551SRodney W. Grimes return (ret); 2788fae3551SRodney W. Grimes } 2798fae3551SRodney W. Grimes 2808fae3551SRodney W. Grimes /* 2818fae3551SRodney W. Grimes * Scan a disk block containing directory information looking to see if 2828fae3551SRodney W. Grimes * any of the entries are on the dump list and to see if the directory 2838fae3551SRodney W. Grimes * contains any subdirectories. 2848fae3551SRodney W. Grimes */ 2858fae3551SRodney W. Grimes static int 2868fae3551SRodney W. Grimes searchdir(ino, blkno, size, filesize) 2878fae3551SRodney W. Grimes ino_t ino; 2888fae3551SRodney W. Grimes daddr_t blkno; 2898fae3551SRodney W. Grimes register long size; 2908fae3551SRodney W. Grimes long filesize; 2918fae3551SRodney W. Grimes { 2928fae3551SRodney W. Grimes register struct direct *dp; 2938fae3551SRodney W. Grimes register long loc, ret = 0; 2948fae3551SRodney W. Grimes char dblk[MAXBSIZE]; 2958fae3551SRodney W. Grimes 2968fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), dblk, (int)size); 2978fae3551SRodney W. Grimes if (filesize < size) 2988fae3551SRodney W. Grimes size = filesize; 2998fae3551SRodney W. Grimes for (loc = 0; loc < size; ) { 3008fae3551SRodney W. Grimes dp = (struct direct *)(dblk + loc); 3018fae3551SRodney W. Grimes if (dp->d_reclen == 0) { 3028fae3551SRodney W. Grimes msg("corrupted directory, inumber %d\n", ino); 3038fae3551SRodney W. Grimes break; 3048fae3551SRodney W. Grimes } 3058fae3551SRodney W. Grimes loc += dp->d_reclen; 3068fae3551SRodney W. Grimes if (dp->d_ino == 0) 3078fae3551SRodney W. Grimes continue; 3088fae3551SRodney W. Grimes if (dp->d_name[0] == '.') { 3098fae3551SRodney W. Grimes if (dp->d_name[1] == '\0') 3108fae3551SRodney W. Grimes continue; 3118fae3551SRodney W. Grimes if (dp->d_name[1] == '.' && dp->d_name[2] == '\0') 3128fae3551SRodney W. Grimes continue; 3138fae3551SRodney W. Grimes } 3148fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpinomap)) { 3158fae3551SRodney W. Grimes ret |= HASDUMPEDFILE; 3168fae3551SRodney W. Grimes if (ret & HASSUBDIRS) 3178fae3551SRodney W. Grimes break; 3188fae3551SRodney W. Grimes } 3198fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpdirmap)) { 3208fae3551SRodney W. Grimes ret |= HASSUBDIRS; 3218fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 3228fae3551SRodney W. Grimes break; 3238fae3551SRodney W. Grimes } 3248fae3551SRodney W. Grimes } 3258fae3551SRodney W. Grimes return (ret); 3268fae3551SRodney W. Grimes } 3278fae3551SRodney W. Grimes 3288fae3551SRodney W. Grimes /* 3298fae3551SRodney W. Grimes * Dump passes 3 and 4. 3308fae3551SRodney W. Grimes * 3318fae3551SRodney W. Grimes * Dump the contents of an inode to tape. 3328fae3551SRodney W. Grimes */ 3338fae3551SRodney W. Grimes void 3348fae3551SRodney W. Grimes dumpino(dp, ino) 3358fae3551SRodney W. Grimes register struct dinode *dp; 3368fae3551SRodney W. Grimes ino_t ino; 3378fae3551SRodney W. Grimes { 3388fae3551SRodney W. Grimes int ind_level, cnt; 3398fae3551SRodney W. Grimes fsizeT size; 3408fae3551SRodney W. Grimes char buf[TP_BSIZE]; 3418fae3551SRodney W. Grimes 3428fae3551SRodney W. Grimes if (newtape) { 3438fae3551SRodney W. Grimes newtape = 0; 3448fae3551SRodney W. Grimes dumpmap(dumpinomap, TS_BITS, ino); 3458fae3551SRodney W. Grimes } 3468fae3551SRodney W. Grimes CLRINO(ino, dumpinomap); 3478fae3551SRodney W. Grimes spcl.c_dinode = *dp; 3488fae3551SRodney W. Grimes spcl.c_type = TS_INODE; 3498fae3551SRodney W. Grimes spcl.c_count = 0; 3508fae3551SRodney W. Grimes switch (dp->di_mode & S_IFMT) { 3518fae3551SRodney W. Grimes 3528fae3551SRodney W. Grimes case 0: 3538fae3551SRodney W. Grimes /* 3548fae3551SRodney W. Grimes * Freed inode. 3558fae3551SRodney W. Grimes */ 3568fae3551SRodney W. Grimes return; 3578fae3551SRodney W. Grimes 3588fae3551SRodney W. Grimes case S_IFLNK: 3598fae3551SRodney W. Grimes /* 3608fae3551SRodney W. Grimes * Check for short symbolic link. 3618fae3551SRodney W. Grimes */ 3628fae3551SRodney W. Grimes #ifdef FS_44INODEFMT 3638fae3551SRodney W. Grimes if (dp->di_size > 0 && 3648fae3551SRodney W. Grimes dp->di_size < sblock->fs_maxsymlinklen) { 3658fae3551SRodney W. Grimes spcl.c_addr[0] = 1; 3668fae3551SRodney W. Grimes spcl.c_count = 1; 3678fae3551SRodney W. Grimes writeheader(ino); 368a37c38b8SPeter Wemm memmove(buf, dp->di_shortlink, (u_long)dp->di_size); 3698fae3551SRodney W. Grimes buf[dp->di_size] = '\0'; 3708fae3551SRodney W. Grimes writerec(buf, 0); 3718fae3551SRodney W. Grimes return; 3728fae3551SRodney W. Grimes } 3738fae3551SRodney W. Grimes #endif 3748fae3551SRodney W. Grimes /* fall through */ 3758fae3551SRodney W. Grimes 3768fae3551SRodney W. Grimes case S_IFDIR: 3778fae3551SRodney W. Grimes case S_IFREG: 3788fae3551SRodney W. Grimes if (dp->di_size > 0) 3798fae3551SRodney W. Grimes break; 3808fae3551SRodney W. Grimes /* fall through */ 3818fae3551SRodney W. Grimes 3828fae3551SRodney W. Grimes case S_IFIFO: 3838fae3551SRodney W. Grimes case S_IFSOCK: 3848fae3551SRodney W. Grimes case S_IFCHR: 3858fae3551SRodney W. Grimes case S_IFBLK: 3868fae3551SRodney W. Grimes writeheader(ino); 3878fae3551SRodney W. Grimes return; 3888fae3551SRodney W. Grimes 3898fae3551SRodney W. Grimes default: 3908fae3551SRodney W. Grimes msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT); 3918fae3551SRodney W. Grimes return; 3928fae3551SRodney W. Grimes } 3938fae3551SRodney W. Grimes if (dp->di_size > NDADDR * sblock->fs_bsize) 3948fae3551SRodney W. Grimes cnt = NDADDR * sblock->fs_frag; 3958fae3551SRodney W. Grimes else 3968fae3551SRodney W. Grimes cnt = howmany(dp->di_size, sblock->fs_fsize); 3978fae3551SRodney W. Grimes blksout(&dp->di_db[0], cnt, ino); 3988fae3551SRodney W. Grimes if ((size = dp->di_size - NDADDR * sblock->fs_bsize) <= 0) 3998fae3551SRodney W. Grimes return; 4008fae3551SRodney W. Grimes for (ind_level = 0; ind_level < NIADDR; ind_level++) { 4018fae3551SRodney W. Grimes dmpindir(ino, dp->di_ib[ind_level], ind_level, &size); 4028fae3551SRodney W. Grimes if (size <= 0) 4038fae3551SRodney W. Grimes return; 4048fae3551SRodney W. Grimes } 4058fae3551SRodney W. Grimes } 4068fae3551SRodney W. Grimes 4078fae3551SRodney W. Grimes /* 4088fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be dumped. 4098fae3551SRodney W. Grimes */ 4108fae3551SRodney W. Grimes static void 4118fae3551SRodney W. Grimes dmpindir(ino, blk, ind_level, size) 4128fae3551SRodney W. Grimes ino_t ino; 4138fae3551SRodney W. Grimes daddr_t blk; 4148fae3551SRodney W. Grimes int ind_level; 4158fae3551SRodney W. Grimes fsizeT *size; 4168fae3551SRodney W. Grimes { 4178fae3551SRodney W. Grimes int i, cnt; 4188fae3551SRodney W. Grimes daddr_t idblk[MAXNINDIR]; 4198fae3551SRodney W. Grimes 4208fae3551SRodney W. Grimes if (blk != 0) 4218fae3551SRodney W. Grimes bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize); 4228fae3551SRodney W. Grimes else 423a37c38b8SPeter Wemm memset(idblk, 0, (int)sblock->fs_bsize); 4248fae3551SRodney W. Grimes if (ind_level <= 0) { 4258fae3551SRodney W. Grimes if (*size < NINDIR(sblock) * sblock->fs_bsize) 4268fae3551SRodney W. Grimes cnt = howmany(*size, sblock->fs_fsize); 4278fae3551SRodney W. Grimes else 4288fae3551SRodney W. Grimes cnt = NINDIR(sblock) * sblock->fs_frag; 4298fae3551SRodney W. Grimes *size -= NINDIR(sblock) * sblock->fs_bsize; 4308fae3551SRodney W. Grimes blksout(&idblk[0], cnt, ino); 4318fae3551SRodney W. Grimes return; 4328fae3551SRodney W. Grimes } 4338fae3551SRodney W. Grimes ind_level--; 4348fae3551SRodney W. Grimes for (i = 0; i < NINDIR(sblock); i++) { 4358fae3551SRodney W. Grimes dmpindir(ino, idblk[i], ind_level, size); 4368fae3551SRodney W. Grimes if (*size <= 0) 4378fae3551SRodney W. Grimes return; 4388fae3551SRodney W. Grimes } 4398fae3551SRodney W. Grimes } 4408fae3551SRodney W. Grimes 4418fae3551SRodney W. Grimes /* 4428fae3551SRodney W. Grimes * Collect up the data into tape record sized buffers and output them. 4438fae3551SRodney W. Grimes */ 4448fae3551SRodney W. Grimes void 4458fae3551SRodney W. Grimes blksout(blkp, frags, ino) 4468fae3551SRodney W. Grimes daddr_t *blkp; 4478fae3551SRodney W. Grimes int frags; 4488fae3551SRodney W. Grimes ino_t ino; 4498fae3551SRodney W. Grimes { 4508fae3551SRodney W. Grimes register daddr_t *bp; 4518fae3551SRodney W. Grimes int i, j, count, blks, tbperdb; 4528fae3551SRodney W. Grimes 4538fae3551SRodney W. Grimes blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 4548fae3551SRodney W. Grimes tbperdb = sblock->fs_bsize >> tp_bshift; 4558fae3551SRodney W. Grimes for (i = 0; i < blks; i += TP_NINDIR) { 4568fae3551SRodney W. Grimes if (i + TP_NINDIR > blks) 4578fae3551SRodney W. Grimes count = blks; 4588fae3551SRodney W. Grimes else 4598fae3551SRodney W. Grimes count = i + TP_NINDIR; 4608fae3551SRodney W. Grimes for (j = i; j < count; j++) 4618fae3551SRodney W. Grimes if (blkp[j / tbperdb] != 0) 4628fae3551SRodney W. Grimes spcl.c_addr[j - i] = 1; 4638fae3551SRodney W. Grimes else 4648fae3551SRodney W. Grimes spcl.c_addr[j - i] = 0; 4658fae3551SRodney W. Grimes spcl.c_count = count - i; 4668fae3551SRodney W. Grimes writeheader(ino); 4678fae3551SRodney W. Grimes bp = &blkp[i / tbperdb]; 4688fae3551SRodney W. Grimes for (j = i; j < count; j += tbperdb, bp++) 46916c4e408SBill Fumerola if (*bp != 0) { 4708fae3551SRodney W. Grimes if (j + tbperdb <= count) 4718fae3551SRodney W. Grimes dumpblock(*bp, (int)sblock->fs_bsize); 4728fae3551SRodney W. Grimes else 4738fae3551SRodney W. Grimes dumpblock(*bp, (count - j) * TP_BSIZE); 47416c4e408SBill Fumerola } 4758fae3551SRodney W. Grimes spcl.c_type = TS_ADDR; 4768fae3551SRodney W. Grimes } 4778fae3551SRodney W. Grimes } 4788fae3551SRodney W. Grimes 4798fae3551SRodney W. Grimes /* 4808fae3551SRodney W. Grimes * Dump a map to the tape. 4818fae3551SRodney W. Grimes */ 4828fae3551SRodney W. Grimes void 4838fae3551SRodney W. Grimes dumpmap(map, type, ino) 4848fae3551SRodney W. Grimes char *map; 4858fae3551SRodney W. Grimes int type; 4868fae3551SRodney W. Grimes ino_t ino; 4878fae3551SRodney W. Grimes { 4888fae3551SRodney W. Grimes register int i; 4898fae3551SRodney W. Grimes char *cp; 4908fae3551SRodney W. Grimes 4918fae3551SRodney W. Grimes spcl.c_type = type; 4928fae3551SRodney W. Grimes spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE); 4938fae3551SRodney W. Grimes writeheader(ino); 4948fae3551SRodney W. Grimes for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE) 4958fae3551SRodney W. Grimes writerec(cp, 0); 4968fae3551SRodney W. Grimes } 4978fae3551SRodney W. Grimes 4988fae3551SRodney W. Grimes /* 4998fae3551SRodney W. Grimes * Write a header record to the dump tape. 5008fae3551SRodney W. Grimes */ 5018fae3551SRodney W. Grimes void 5028fae3551SRodney W. Grimes writeheader(ino) 5038fae3551SRodney W. Grimes ino_t ino; 5048fae3551SRodney W. Grimes { 50597b465b1SDima Ruban register int32_t sum, cnt, *lp; 5068fae3551SRodney W. Grimes 5078fae3551SRodney W. Grimes spcl.c_inumber = ino; 5088fae3551SRodney W. Grimes spcl.c_magic = NFS_MAGIC; 5098fae3551SRodney W. Grimes spcl.c_checksum = 0; 51097b465b1SDima Ruban lp = (int32_t *)&spcl; 5118fae3551SRodney W. Grimes sum = 0; 51297b465b1SDima Ruban cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t)); 5138fae3551SRodney W. Grimes while (--cnt >= 0) { 5148fae3551SRodney W. Grimes sum += *lp++; 5158fae3551SRodney W. Grimes sum += *lp++; 5168fae3551SRodney W. Grimes sum += *lp++; 5178fae3551SRodney W. Grimes sum += *lp++; 5188fae3551SRodney W. Grimes } 5198fae3551SRodney W. Grimes spcl.c_checksum = CHECKSUM - sum; 5208fae3551SRodney W. Grimes writerec((char *)&spcl, 1); 5218fae3551SRodney W. Grimes } 5228fae3551SRodney W. Grimes 5238fae3551SRodney W. Grimes struct dinode * 5248fae3551SRodney W. Grimes getino(inum) 5258fae3551SRodney W. Grimes ino_t inum; 5268fae3551SRodney W. Grimes { 5278fae3551SRodney W. Grimes static daddr_t minino, maxino; 5288fae3551SRodney W. Grimes static struct dinode inoblock[MAXINOPB]; 5298fae3551SRodney W. Grimes 5308fae3551SRodney W. Grimes curino = inum; 5318fae3551SRodney W. Grimes if (inum >= minino && inum < maxino) 5328fae3551SRodney W. Grimes return (&inoblock[inum - minino]); 5338fae3551SRodney W. Grimes bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock, 5348fae3551SRodney W. Grimes (int)sblock->fs_bsize); 5358fae3551SRodney W. Grimes minino = inum - (inum % INOPB(sblock)); 5368fae3551SRodney W. Grimes maxino = minino + INOPB(sblock); 5378fae3551SRodney W. Grimes return (&inoblock[inum - minino]); 5388fae3551SRodney W. Grimes } 5398fae3551SRodney W. Grimes 5408fae3551SRodney W. Grimes /* 5418fae3551SRodney W. Grimes * Read a chunk of data from the disk. 5428fae3551SRodney W. Grimes * Try to recover from hard errors by reading in sector sized pieces. 5438fae3551SRodney W. Grimes * Error recovery is attempted at most BREADEMAX times before seeking 5448fae3551SRodney W. Grimes * consent from the operator to continue. 5458fae3551SRodney W. Grimes */ 5468fae3551SRodney W. Grimes int breaderrors = 0; 5478fae3551SRodney W. Grimes #define BREADEMAX 32 5488fae3551SRodney W. Grimes 5498fae3551SRodney W. Grimes void 5508fae3551SRodney W. Grimes bread(blkno, buf, size) 5518fae3551SRodney W. Grimes daddr_t blkno; 5528fae3551SRodney W. Grimes char *buf; 5538fae3551SRodney W. Grimes int size; 5548fae3551SRodney W. Grimes { 5558fae3551SRodney W. Grimes int cnt, i; 5568fae3551SRodney W. Grimes extern int errno; 5578fae3551SRodney W. Grimes 5588fae3551SRodney W. Grimes loop: 559d195e6deSJoerg Wunsch if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) != 560d195e6deSJoerg Wunsch ((off_t)blkno << dev_bshift)) 5618fae3551SRodney W. Grimes msg("bread: lseek fails\n"); 5628fae3551SRodney W. Grimes if ((cnt = read(diskfd, buf, size)) == size) 5638fae3551SRodney W. Grimes return; 5648fae3551SRodney W. Grimes if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) { 5658fae3551SRodney W. Grimes /* 5668fae3551SRodney W. Grimes * Trying to read the final fragment. 5678fae3551SRodney W. Grimes * 5688fae3551SRodney W. Grimes * NB - dump only works in TP_BSIZE blocks, hence 5698fae3551SRodney W. Grimes * rounds `dev_bsize' fragments up to TP_BSIZE pieces. 5708fae3551SRodney W. Grimes * It should be smarter about not actually trying to 5718fae3551SRodney W. Grimes * read more than it can get, but for the time being 5728fae3551SRodney W. Grimes * we punt and scale back the read only when it gets 5738fae3551SRodney W. Grimes * us into trouble. (mkm 9/25/83) 5748fae3551SRodney W. Grimes */ 5758fae3551SRodney W. Grimes size -= dev_bsize; 5768fae3551SRodney W. Grimes goto loop; 5778fae3551SRodney W. Grimes } 5788fae3551SRodney W. Grimes if (cnt == -1) 5798fae3551SRodney W. Grimes msg("read error from %s: %s: [block %d]: count=%d\n", 5808fae3551SRodney W. Grimes disk, strerror(errno), blkno, size); 5818fae3551SRodney W. Grimes else 5828fae3551SRodney W. Grimes msg("short read error from %s: [block %d]: count=%d, got=%d\n", 5838fae3551SRodney W. Grimes disk, blkno, size, cnt); 5848fae3551SRodney W. Grimes if (++breaderrors > BREADEMAX) { 5858fae3551SRodney W. Grimes msg("More than %d block read errors from %d\n", 5868fae3551SRodney W. Grimes BREADEMAX, disk); 5878fae3551SRodney W. Grimes broadcast("DUMP IS AILING!\n"); 5888fae3551SRodney W. Grimes msg("This is an unrecoverable error.\n"); 5898fae3551SRodney W. Grimes if (!query("Do you want to attempt to continue?")){ 5908fae3551SRodney W. Grimes dumpabort(0); 5918fae3551SRodney W. Grimes /*NOTREACHED*/ 5928fae3551SRodney W. Grimes } else 5938fae3551SRodney W. Grimes breaderrors = 0; 5948fae3551SRodney W. Grimes } 5958fae3551SRodney W. Grimes /* 5968fae3551SRodney W. Grimes * Zero buffer, then try to read each sector of buffer separately. 5978fae3551SRodney W. Grimes */ 598a37c38b8SPeter Wemm memset(buf, 0, size); 5998fae3551SRodney W. Grimes for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) { 600d195e6deSJoerg Wunsch if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) != 601d195e6deSJoerg Wunsch ((off_t)blkno << dev_bshift)) 6028fae3551SRodney W. Grimes msg("bread: lseek2 fails!\n"); 6038fae3551SRodney W. Grimes if ((cnt = read(diskfd, buf, (int)dev_bsize)) == dev_bsize) 6048fae3551SRodney W. Grimes continue; 6058fae3551SRodney W. Grimes if (cnt == -1) { 6068fae3551SRodney W. Grimes msg("read error from %s: %s: [sector %d]: count=%d\n", 6078fae3551SRodney W. Grimes disk, strerror(errno), blkno, dev_bsize); 6088fae3551SRodney W. Grimes continue; 6098fae3551SRodney W. Grimes } 6108fae3551SRodney W. Grimes msg("short read error from %s: [sector %d]: count=%d, got=%d\n", 6118fae3551SRodney W. Grimes disk, blkno, dev_bsize, cnt); 6128fae3551SRodney W. Grimes } 6138fae3551SRodney W. Grimes } 614