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> 528fae3551SRodney W. Grimes #include <stdio.h> 538fae3551SRodney W. Grimes #ifdef __STDC__ 5437736675SWarner Losh #include <errno.h> 558fae3551SRodney W. Grimes #include <string.h> 568fae3551SRodney W. Grimes #include <unistd.h> 578fae3551SRodney W. Grimes #endif 588fae3551SRodney W. Grimes 598fae3551SRodney W. Grimes #include "dump.h" 608fae3551SRodney W. Grimes 618fae3551SRodney W. Grimes #define HASDUMPEDFILE 0x1 628fae3551SRodney W. Grimes #define HASSUBDIRS 0x2 638fae3551SRodney W. Grimes 648fae3551SRodney W. Grimes #ifdef FS_44INODEFMT 658fae3551SRodney W. Grimes typedef quad_t fsizeT; 668fae3551SRodney W. Grimes #else 678fae3551SRodney W. Grimes typedef long fsizeT; 688fae3551SRodney W. Grimes #endif 698fae3551SRodney W. Grimes 70801382faSDavid E. O'Brien static int dirindir __P((ino_t ino, daddr_t blkno, int level, long *size, 71801382faSDavid E. O'Brien long *tapesize, int nodump)); 728fae3551SRodney W. Grimes static void dmpindir __P((ino_t ino, daddr_t blk, int level, fsizeT *size)); 73801382faSDavid E. O'Brien static int searchdir __P((ino_t ino, daddr_t blkno, long size, long filesize, 74801382faSDavid E. O'Brien long *tapesize, int nodump)); 758fae3551SRodney W. Grimes 768fae3551SRodney W. Grimes /* 778fae3551SRodney W. Grimes * This is an estimation of the number of TP_BSIZE blocks in the file. 788fae3551SRodney W. Grimes * It estimates the number of blocks in files with holes by assuming 798fae3551SRodney W. Grimes * that all of the blocks accounted for by di_blocks are data blocks 808fae3551SRodney W. Grimes * (when some of the blocks are usually used for indirect pointers); 818fae3551SRodney W. Grimes * hence the estimate may be high. 828fae3551SRodney W. Grimes */ 838fae3551SRodney W. Grimes long 848fae3551SRodney W. Grimes blockest(dp) 85d2334e27SIan Dowse struct dinode *dp; 868fae3551SRodney W. Grimes { 878fae3551SRodney W. Grimes long blkest, sizeest; 888fae3551SRodney W. Grimes 898fae3551SRodney W. Grimes /* 908fae3551SRodney W. Grimes * dp->di_size is the size of the file in bytes. 918fae3551SRodney W. Grimes * dp->di_blocks stores the number of sectors actually in the file. 928fae3551SRodney W. Grimes * If there are more sectors than the size would indicate, this just 938fae3551SRodney W. Grimes * means that there are indirect blocks in the file or unused 948fae3551SRodney W. Grimes * sectors in the last file block; we can safely ignore these 958fae3551SRodney W. Grimes * (blkest = sizeest below). 968fae3551SRodney W. Grimes * If the file is bigger than the number of sectors would indicate, 978fae3551SRodney W. Grimes * then the file has holes in it. In this case we must use the 988fae3551SRodney W. Grimes * block count to estimate the number of data blocks used, but 998fae3551SRodney W. Grimes * we use the actual size for estimating the number of indirect 1008fae3551SRodney W. Grimes * dump blocks (sizeest vs. blkest in the indirect block 1018fae3551SRodney W. Grimes * calculation). 1028fae3551SRodney W. Grimes */ 1038fae3551SRodney W. Grimes blkest = howmany(dbtob(dp->di_blocks), TP_BSIZE); 1048fae3551SRodney W. Grimes sizeest = howmany(dp->di_size, TP_BSIZE); 1058fae3551SRodney W. Grimes if (blkest > sizeest) 1068fae3551SRodney W. Grimes blkest = sizeest; 1078fae3551SRodney W. Grimes if (dp->di_size > sblock->fs_bsize * NDADDR) { 1088fae3551SRodney W. Grimes /* calculate the number of indirect blocks on the dump tape */ 1098fae3551SRodney W. Grimes blkest += 1108fae3551SRodney W. Grimes howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE, 1118fae3551SRodney W. Grimes TP_NINDIR); 1128fae3551SRodney W. Grimes } 1138fae3551SRodney W. Grimes return (blkest + 1); 1148fae3551SRodney W. Grimes } 1158fae3551SRodney W. Grimes 1168fae3551SRodney W. Grimes /* Auxiliary macro to pick up files changed since previous dump. */ 1178fae3551SRodney W. Grimes #define CHANGEDSINCE(dp, t) \ 1188fae3551SRodney W. Grimes ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t)) 1198fae3551SRodney W. Grimes 1208fae3551SRodney W. Grimes /* The WANTTODUMP macro decides whether a file should be dumped. */ 1218fae3551SRodney W. Grimes #ifdef UF_NODUMP 1228fae3551SRodney W. Grimes #define WANTTODUMP(dp) \ 1238fae3551SRodney W. Grimes (CHANGEDSINCE(dp, spcl.c_ddate) && \ 1248fae3551SRodney W. Grimes (nonodump || ((dp)->di_flags & UF_NODUMP) != UF_NODUMP)) 1258fae3551SRodney W. Grimes #else 1268fae3551SRodney W. Grimes #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate) 1278fae3551SRodney W. Grimes #endif 1288fae3551SRodney W. Grimes 1298fae3551SRodney W. Grimes /* 1308fae3551SRodney W. Grimes * Dump pass 1. 1318fae3551SRodney W. Grimes * 1328fae3551SRodney W. Grimes * Walk the inode list for a filesystem to find all allocated inodes 1338fae3551SRodney W. Grimes * that have been modified since the previous dump time. Also, find all 1348fae3551SRodney W. Grimes * the directories in the filesystem. 1358fae3551SRodney W. Grimes */ 1368fae3551SRodney W. Grimes int 1378fae3551SRodney W. Grimes mapfiles(maxino, tapesize) 1388fae3551SRodney W. Grimes ino_t maxino; 1398fae3551SRodney W. Grimes long *tapesize; 1408fae3551SRodney W. Grimes { 141d2334e27SIan Dowse int mode; 142d2334e27SIan Dowse ino_t ino; 143d2334e27SIan Dowse struct dinode *dp; 1448fae3551SRodney W. Grimes int anydirskipped = 0; 1458fae3551SRodney W. Grimes 1468fae3551SRodney W. Grimes for (ino = ROOTINO; ino < maxino; ino++) { 1478fae3551SRodney W. Grimes dp = getino(ino); 1488fae3551SRodney W. Grimes if ((mode = (dp->di_mode & IFMT)) == 0) 1498fae3551SRodney W. Grimes continue; 150801382faSDavid E. O'Brien /* 1512c8094f3SJordan K. Hubbard * Everything must go in usedinomap so that a check 1522c8094f3SJordan K. Hubbard * for "in dumpdirmap but not in usedinomap" to detect 1532c8094f3SJordan K. Hubbard * dirs with nodump set has a chance of succeeding 1542c8094f3SJordan K. Hubbard * (this is used in mapdirs()). 155801382faSDavid E. O'Brien */ 1562c8094f3SJordan K. Hubbard SETINO(ino, usedinomap); 1578fae3551SRodney W. Grimes if (mode == IFDIR) 1588fae3551SRodney W. Grimes SETINO(ino, dumpdirmap); 1598fae3551SRodney W. Grimes if (WANTTODUMP(dp)) { 1608fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 1618fae3551SRodney W. Grimes if (mode != IFREG && mode != IFDIR && mode != IFLNK) 1628fae3551SRodney W. Grimes *tapesize += 1; 1638fae3551SRodney W. Grimes else 1648fae3551SRodney W. Grimes *tapesize += blockest(dp); 1658fae3551SRodney W. Grimes continue; 1668fae3551SRodney W. Grimes } 1672c8094f3SJordan K. Hubbard if (mode == IFDIR) { 1682c8094f3SJordan K. Hubbard if (!nonodump && (dp->di_flags & UF_NODUMP)) 1692c8094f3SJordan K. Hubbard CLRINO(ino, usedinomap); 1708fae3551SRodney W. Grimes anydirskipped = 1; 1718fae3551SRodney W. Grimes } 1722c8094f3SJordan K. Hubbard } 1738fae3551SRodney W. Grimes /* 1748fae3551SRodney W. Grimes * Restore gets very upset if the root is not dumped, 1758fae3551SRodney W. Grimes * so ensure that it always is dumped. 1768fae3551SRodney W. Grimes */ 1778fae3551SRodney W. Grimes SETINO(ROOTINO, dumpinomap); 1788fae3551SRodney W. Grimes return (anydirskipped); 1798fae3551SRodney W. Grimes } 1808fae3551SRodney W. Grimes 1818fae3551SRodney W. Grimes /* 1828fae3551SRodney W. Grimes * Dump pass 2. 1838fae3551SRodney W. Grimes * 1848fae3551SRodney W. Grimes * Scan each directory on the filesystem to see if it has any modified 1858fae3551SRodney W. Grimes * files in it. If it does, and has not already been added to the dump 1868fae3551SRodney W. Grimes * list (because it was itself modified), then add it. If a directory 1878fae3551SRodney W. Grimes * has not been modified itself, contains no modified files and has no 1888fae3551SRodney W. Grimes * subdirectories, then it can be deleted from the dump list and from 1898fae3551SRodney W. Grimes * the list of directories. By deleting it from the list of directories, 1908fae3551SRodney W. Grimes * its parent may now qualify for the same treatment on this or a later 1918fae3551SRodney W. Grimes * pass using this algorithm. 1928fae3551SRodney W. Grimes */ 1938fae3551SRodney W. Grimes int 1948fae3551SRodney W. Grimes mapdirs(maxino, tapesize) 1958fae3551SRodney W. Grimes ino_t maxino; 1968fae3551SRodney W. Grimes long *tapesize; 1978fae3551SRodney W. Grimes { 198d2334e27SIan Dowse struct dinode *dp; 199d2334e27SIan Dowse int i, isdir, nodump; 200d2334e27SIan Dowse char *map; 201d2334e27SIan Dowse ino_t ino; 202801382faSDavid E. O'Brien struct dinode di; 2038fae3551SRodney W. Grimes long filesize; 2048fae3551SRodney W. Grimes int ret, change = 0; 2058fae3551SRodney W. Grimes 2068fae3551SRodney W. Grimes isdir = 0; /* XXX just to get gcc to shut up */ 2078fae3551SRodney W. Grimes for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 2088fae3551SRodney W. Grimes if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 2098fae3551SRodney W. Grimes isdir = *map++; 2108fae3551SRodney W. Grimes else 2118fae3551SRodney W. Grimes isdir >>= 1; 212801382faSDavid E. O'Brien /* 213801382faSDavid E. O'Brien * If a directory has been removed from usedinomap, it 214801382faSDavid E. O'Brien * either has the nodump flag set, or has inherited 215801382faSDavid E. O'Brien * it. Although a directory can't be in dumpinomap if 216801382faSDavid E. O'Brien * it isn't in usedinomap, we have to go through it to 217801382faSDavid E. O'Brien * propagate the nodump flag. 218801382faSDavid E. O'Brien */ 2192c8094f3SJordan K. Hubbard nodump = !nonodump && (TSTINO(ino, usedinomap) == 0); 220801382faSDavid E. O'Brien if ((isdir & 1) == 0 || (TSTINO(ino, dumpinomap) && !nodump)) 2218fae3551SRodney W. Grimes continue; 2228fae3551SRodney W. Grimes dp = getino(ino); 223801382faSDavid E. O'Brien di = *dp; /* inode buf may change in searchdir(). */ 224801382faSDavid E. O'Brien filesize = di.di_size; 2258fae3551SRodney W. Grimes for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) { 226801382faSDavid E. O'Brien if (di.di_db[i] != 0) 227801382faSDavid E. O'Brien ret |= searchdir(ino, di.di_db[i], 2288fae3551SRodney W. Grimes (long)dblksize(sblock, dp, i), 229801382faSDavid E. O'Brien filesize, tapesize, nodump); 2308fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2318fae3551SRodney W. Grimes filesize = 0; 2328fae3551SRodney W. Grimes else 2338fae3551SRodney W. Grimes filesize -= sblock->fs_bsize; 2348fae3551SRodney W. Grimes } 2358fae3551SRodney W. Grimes for (i = 0; filesize > 0 && i < NIADDR; i++) { 236801382faSDavid E. O'Brien if (di.di_ib[i] == 0) 2378fae3551SRodney W. Grimes continue; 238801382faSDavid E. O'Brien ret |= dirindir(ino, di.di_ib[i], i, &filesize, 239801382faSDavid E. O'Brien tapesize, nodump); 2408fae3551SRodney W. Grimes } 2418fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) { 2428fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 2438fae3551SRodney W. Grimes *tapesize += blockest(dp); 2448fae3551SRodney W. Grimes change = 1; 2458fae3551SRodney W. Grimes continue; 2468fae3551SRodney W. Grimes } 247801382faSDavid E. O'Brien if (nodump) { 248801382faSDavid E. O'Brien if (ret & HASSUBDIRS) 249801382faSDavid E. O'Brien change = 1; /* subdirs inherit nodump */ 250801382faSDavid E. O'Brien CLRINO(ino, dumpdirmap); 251801382faSDavid E. O'Brien } else if ((ret & HASSUBDIRS) == 0) 2528fae3551SRodney W. Grimes if (!TSTINO(ino, dumpinomap)) { 2538fae3551SRodney W. Grimes CLRINO(ino, dumpdirmap); 2548fae3551SRodney W. Grimes change = 1; 2558fae3551SRodney W. Grimes } 2568fae3551SRodney W. Grimes } 2578fae3551SRodney W. Grimes return (change); 2588fae3551SRodney W. Grimes } 2598fae3551SRodney W. Grimes 2608fae3551SRodney W. Grimes /* 2618fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be searched 2628fae3551SRodney W. Grimes * as directories. Quit as soon as any entry is found that will 2638fae3551SRodney W. Grimes * require the directory to be dumped. 2648fae3551SRodney W. Grimes */ 2658fae3551SRodney W. Grimes static int 266801382faSDavid E. O'Brien dirindir(ino, blkno, ind_level, filesize, tapesize, nodump) 2678fae3551SRodney W. Grimes ino_t ino; 2688fae3551SRodney W. Grimes daddr_t blkno; 2698fae3551SRodney W. Grimes int ind_level; 2708fae3551SRodney W. Grimes long *filesize; 271801382faSDavid E. O'Brien long *tapesize; 272801382faSDavid E. O'Brien int nodump; 2738fae3551SRodney W. Grimes { 2748fae3551SRodney W. Grimes int ret = 0; 275d2334e27SIan Dowse int i; 2768fae3551SRodney W. Grimes daddr_t idblk[MAXNINDIR]; 2778fae3551SRodney W. Grimes 2788fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize); 2798fae3551SRodney W. Grimes if (ind_level <= 0) { 2808fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 2818fae3551SRodney W. Grimes blkno = idblk[i]; 2828fae3551SRodney W. Grimes if (blkno != 0) 2838fae3551SRodney W. Grimes ret |= searchdir(ino, blkno, sblock->fs_bsize, 284801382faSDavid E. O'Brien *filesize, tapesize, nodump); 2858fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2868fae3551SRodney W. Grimes *filesize = 0; 2878fae3551SRodney W. Grimes else 2888fae3551SRodney W. Grimes *filesize -= sblock->fs_bsize; 2898fae3551SRodney W. Grimes } 2908fae3551SRodney W. Grimes return (ret); 2918fae3551SRodney W. Grimes } 2928fae3551SRodney W. Grimes ind_level--; 2938fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 2948fae3551SRodney W. Grimes blkno = idblk[i]; 2958fae3551SRodney W. Grimes if (blkno != 0) 296801382faSDavid E. O'Brien ret |= dirindir(ino, blkno, ind_level, filesize, 297801382faSDavid E. O'Brien tapesize, nodump); 2988fae3551SRodney W. Grimes } 2998fae3551SRodney W. Grimes return (ret); 3008fae3551SRodney W. Grimes } 3018fae3551SRodney W. Grimes 3028fae3551SRodney W. Grimes /* 3038fae3551SRodney W. Grimes * Scan a disk block containing directory information looking to see if 3048fae3551SRodney W. Grimes * any of the entries are on the dump list and to see if the directory 3058fae3551SRodney W. Grimes * contains any subdirectories. 3068fae3551SRodney W. Grimes */ 3078fae3551SRodney W. Grimes static int 308801382faSDavid E. O'Brien searchdir(ino, blkno, size, filesize, tapesize, nodump) 3098fae3551SRodney W. Grimes ino_t ino; 3108fae3551SRodney W. Grimes daddr_t blkno; 311d2334e27SIan Dowse long size; 3128fae3551SRodney W. Grimes long filesize; 313801382faSDavid E. O'Brien long *tapesize; 314801382faSDavid E. O'Brien int nodump; 3158fae3551SRodney W. Grimes { 316d2334e27SIan Dowse struct direct *dp; 317d2334e27SIan Dowse struct dinode *ip; 318d2334e27SIan Dowse long loc, ret = 0; 3198fae3551SRodney W. Grimes char dblk[MAXBSIZE]; 3208fae3551SRodney W. Grimes 3218fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), dblk, (int)size); 3228fae3551SRodney W. Grimes if (filesize < size) 3238fae3551SRodney W. Grimes size = filesize; 3248fae3551SRodney W. Grimes for (loc = 0; loc < size; ) { 3258fae3551SRodney W. Grimes dp = (struct direct *)(dblk + loc); 3268fae3551SRodney W. Grimes if (dp->d_reclen == 0) { 3278fae3551SRodney W. Grimes msg("corrupted directory, inumber %d\n", ino); 3288fae3551SRodney W. Grimes break; 3298fae3551SRodney W. Grimes } 3308fae3551SRodney W. Grimes loc += dp->d_reclen; 3318fae3551SRodney W. Grimes if (dp->d_ino == 0) 3328fae3551SRodney W. Grimes continue; 3338fae3551SRodney W. Grimes if (dp->d_name[0] == '.') { 3348fae3551SRodney W. Grimes if (dp->d_name[1] == '\0') 3358fae3551SRodney W. Grimes continue; 3368fae3551SRodney W. Grimes if (dp->d_name[1] == '.' && dp->d_name[2] == '\0') 3378fae3551SRodney W. Grimes continue; 3388fae3551SRodney W. Grimes } 339801382faSDavid E. O'Brien if (nodump) { 340801382faSDavid E. O'Brien ip = getino(dp->d_ino); 341801382faSDavid E. O'Brien if (TSTINO(dp->d_ino, dumpinomap)) { 342801382faSDavid E. O'Brien CLRINO(dp->d_ino, dumpinomap); 343801382faSDavid E. O'Brien CLRINO(dp->d_ino, usedinomap); 344801382faSDavid E. O'Brien *tapesize -= blockest(ip); 345801382faSDavid E. O'Brien } 346801382faSDavid E. O'Brien /* Add back to dumpdirmap to propagate nodump. */ 347801382faSDavid E. O'Brien if ((ip->di_mode & IFMT) == IFDIR) { 348801382faSDavid E. O'Brien SETINO(dp->d_ino, dumpdirmap); 349801382faSDavid E. O'Brien ret |= HASSUBDIRS; 350801382faSDavid E. O'Brien } 351801382faSDavid E. O'Brien } else { 3528fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpinomap)) { 3538fae3551SRodney W. Grimes ret |= HASDUMPEDFILE; 3548fae3551SRodney W. Grimes if (ret & HASSUBDIRS) 3558fae3551SRodney W. Grimes break; 3568fae3551SRodney W. Grimes } 3578fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpdirmap)) { 3588fae3551SRodney W. Grimes ret |= HASSUBDIRS; 3598fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 3608fae3551SRodney W. Grimes break; 3618fae3551SRodney W. Grimes } 3628fae3551SRodney W. Grimes } 363801382faSDavid E. O'Brien } 3648fae3551SRodney W. Grimes return (ret); 3658fae3551SRodney W. Grimes } 3668fae3551SRodney W. Grimes 3678fae3551SRodney W. Grimes /* 3688fae3551SRodney W. Grimes * Dump passes 3 and 4. 3698fae3551SRodney W. Grimes * 3708fae3551SRodney W. Grimes * Dump the contents of an inode to tape. 3718fae3551SRodney W. Grimes */ 3728fae3551SRodney W. Grimes void 3738fae3551SRodney W. Grimes dumpino(dp, ino) 374d2334e27SIan Dowse struct dinode *dp; 3758fae3551SRodney W. Grimes ino_t ino; 3768fae3551SRodney W. Grimes { 3778fae3551SRodney W. Grimes int ind_level, cnt; 3788fae3551SRodney W. Grimes fsizeT size; 3798fae3551SRodney W. Grimes char buf[TP_BSIZE]; 3808fae3551SRodney W. Grimes 3818fae3551SRodney W. Grimes if (newtape) { 3828fae3551SRodney W. Grimes newtape = 0; 3838fae3551SRodney W. Grimes dumpmap(dumpinomap, TS_BITS, ino); 3848fae3551SRodney W. Grimes } 3858fae3551SRodney W. Grimes CLRINO(ino, dumpinomap); 3868fae3551SRodney W. Grimes spcl.c_dinode = *dp; 3878fae3551SRodney W. Grimes spcl.c_type = TS_INODE; 3888fae3551SRodney W. Grimes spcl.c_count = 0; 3898fae3551SRodney W. Grimes switch (dp->di_mode & S_IFMT) { 3908fae3551SRodney W. Grimes 3918fae3551SRodney W. Grimes case 0: 3928fae3551SRodney W. Grimes /* 3938fae3551SRodney W. Grimes * Freed inode. 3948fae3551SRodney W. Grimes */ 3958fae3551SRodney W. Grimes return; 3968fae3551SRodney W. Grimes 3978fae3551SRodney W. Grimes case S_IFLNK: 3988fae3551SRodney W. Grimes /* 3998fae3551SRodney W. Grimes * Check for short symbolic link. 4008fae3551SRodney W. Grimes */ 4018fae3551SRodney W. Grimes #ifdef FS_44INODEFMT 4028fae3551SRodney W. Grimes if (dp->di_size > 0 && 4038fae3551SRodney W. Grimes dp->di_size < sblock->fs_maxsymlinklen) { 4048fae3551SRodney W. Grimes spcl.c_addr[0] = 1; 4058fae3551SRodney W. Grimes spcl.c_count = 1; 4068fae3551SRodney W. Grimes writeheader(ino); 407a37c38b8SPeter Wemm memmove(buf, dp->di_shortlink, (u_long)dp->di_size); 4088fae3551SRodney W. Grimes buf[dp->di_size] = '\0'; 4098fae3551SRodney W. Grimes writerec(buf, 0); 4108fae3551SRodney W. Grimes return; 4118fae3551SRodney W. Grimes } 4128fae3551SRodney W. Grimes #endif 4138fae3551SRodney W. Grimes /* fall through */ 4148fae3551SRodney W. Grimes 4158fae3551SRodney W. Grimes case S_IFDIR: 4168fae3551SRodney W. Grimes case S_IFREG: 4178fae3551SRodney W. Grimes if (dp->di_size > 0) 4188fae3551SRodney W. Grimes break; 4198fae3551SRodney W. Grimes /* fall through */ 4208fae3551SRodney W. Grimes 4218fae3551SRodney W. Grimes case S_IFIFO: 4228fae3551SRodney W. Grimes case S_IFSOCK: 4238fae3551SRodney W. Grimes case S_IFCHR: 4248fae3551SRodney W. Grimes case S_IFBLK: 4258fae3551SRodney W. Grimes writeheader(ino); 4268fae3551SRodney W. Grimes return; 4278fae3551SRodney W. Grimes 4288fae3551SRodney W. Grimes default: 4298fae3551SRodney W. Grimes msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT); 4308fae3551SRodney W. Grimes return; 4318fae3551SRodney W. Grimes } 4328fae3551SRodney W. Grimes if (dp->di_size > NDADDR * sblock->fs_bsize) 4338fae3551SRodney W. Grimes cnt = NDADDR * sblock->fs_frag; 4348fae3551SRodney W. Grimes else 4358fae3551SRodney W. Grimes cnt = howmany(dp->di_size, sblock->fs_fsize); 4368fae3551SRodney W. Grimes blksout(&dp->di_db[0], cnt, ino); 4378fae3551SRodney W. Grimes if ((size = dp->di_size - NDADDR * sblock->fs_bsize) <= 0) 4388fae3551SRodney W. Grimes return; 4398fae3551SRodney W. Grimes for (ind_level = 0; ind_level < NIADDR; ind_level++) { 4408fae3551SRodney W. Grimes dmpindir(ino, dp->di_ib[ind_level], ind_level, &size); 4418fae3551SRodney W. Grimes if (size <= 0) 4428fae3551SRodney W. Grimes return; 4438fae3551SRodney W. Grimes } 4448fae3551SRodney W. Grimes } 4458fae3551SRodney W. Grimes 4468fae3551SRodney W. Grimes /* 4478fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be dumped. 4488fae3551SRodney W. Grimes */ 4498fae3551SRodney W. Grimes static void 4508fae3551SRodney W. Grimes dmpindir(ino, blk, ind_level, size) 4518fae3551SRodney W. Grimes ino_t ino; 4528fae3551SRodney W. Grimes daddr_t blk; 4538fae3551SRodney W. Grimes int ind_level; 4548fae3551SRodney W. Grimes fsizeT *size; 4558fae3551SRodney W. Grimes { 4568fae3551SRodney W. Grimes int i, cnt; 4578fae3551SRodney W. Grimes daddr_t idblk[MAXNINDIR]; 4588fae3551SRodney W. Grimes 4598fae3551SRodney W. Grimes if (blk != 0) 4608fae3551SRodney W. Grimes bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize); 4618fae3551SRodney W. Grimes else 462a37c38b8SPeter Wemm memset(idblk, 0, (int)sblock->fs_bsize); 4638fae3551SRodney W. Grimes if (ind_level <= 0) { 4648fae3551SRodney W. Grimes if (*size < NINDIR(sblock) * sblock->fs_bsize) 4658fae3551SRodney W. Grimes cnt = howmany(*size, sblock->fs_fsize); 4668fae3551SRodney W. Grimes else 4678fae3551SRodney W. Grimes cnt = NINDIR(sblock) * sblock->fs_frag; 4688fae3551SRodney W. Grimes *size -= NINDIR(sblock) * sblock->fs_bsize; 4698fae3551SRodney W. Grimes blksout(&idblk[0], cnt, ino); 4708fae3551SRodney W. Grimes return; 4718fae3551SRodney W. Grimes } 4728fae3551SRodney W. Grimes ind_level--; 4738fae3551SRodney W. Grimes for (i = 0; i < NINDIR(sblock); i++) { 4748fae3551SRodney W. Grimes dmpindir(ino, idblk[i], ind_level, size); 4758fae3551SRodney W. Grimes if (*size <= 0) 4768fae3551SRodney W. Grimes return; 4778fae3551SRodney W. Grimes } 4788fae3551SRodney W. Grimes } 4798fae3551SRodney W. Grimes 4808fae3551SRodney W. Grimes /* 4818fae3551SRodney W. Grimes * Collect up the data into tape record sized buffers and output them. 4828fae3551SRodney W. Grimes */ 4838fae3551SRodney W. Grimes void 4848fae3551SRodney W. Grimes blksout(blkp, frags, ino) 4858fae3551SRodney W. Grimes daddr_t *blkp; 4868fae3551SRodney W. Grimes int frags; 4878fae3551SRodney W. Grimes ino_t ino; 4888fae3551SRodney W. Grimes { 489d2334e27SIan Dowse daddr_t *bp; 4908fae3551SRodney W. Grimes int i, j, count, blks, tbperdb; 4918fae3551SRodney W. Grimes 4928fae3551SRodney W. Grimes blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 4938fae3551SRodney W. Grimes tbperdb = sblock->fs_bsize >> tp_bshift; 4948fae3551SRodney W. Grimes for (i = 0; i < blks; i += TP_NINDIR) { 4958fae3551SRodney W. Grimes if (i + TP_NINDIR > blks) 4968fae3551SRodney W. Grimes count = blks; 4978fae3551SRodney W. Grimes else 4988fae3551SRodney W. Grimes count = i + TP_NINDIR; 4998fae3551SRodney W. Grimes for (j = i; j < count; j++) 5008fae3551SRodney W. Grimes if (blkp[j / tbperdb] != 0) 5018fae3551SRodney W. Grimes spcl.c_addr[j - i] = 1; 5028fae3551SRodney W. Grimes else 5038fae3551SRodney W. Grimes spcl.c_addr[j - i] = 0; 5048fae3551SRodney W. Grimes spcl.c_count = count - i; 5058fae3551SRodney W. Grimes writeheader(ino); 5068fae3551SRodney W. Grimes bp = &blkp[i / tbperdb]; 5078fae3551SRodney W. Grimes for (j = i; j < count; j += tbperdb, bp++) 50816c4e408SBill Fumerola if (*bp != 0) { 5098fae3551SRodney W. Grimes if (j + tbperdb <= count) 5108fae3551SRodney W. Grimes dumpblock(*bp, (int)sblock->fs_bsize); 5118fae3551SRodney W. Grimes else 5128fae3551SRodney W. Grimes dumpblock(*bp, (count - j) * TP_BSIZE); 51316c4e408SBill Fumerola } 5148fae3551SRodney W. Grimes spcl.c_type = TS_ADDR; 5158fae3551SRodney W. Grimes } 5168fae3551SRodney W. Grimes } 5178fae3551SRodney W. Grimes 5188fae3551SRodney W. Grimes /* 5198fae3551SRodney W. Grimes * Dump a map to the tape. 5208fae3551SRodney W. Grimes */ 5218fae3551SRodney W. Grimes void 5228fae3551SRodney W. Grimes dumpmap(map, type, ino) 5238fae3551SRodney W. Grimes char *map; 5248fae3551SRodney W. Grimes int type; 5258fae3551SRodney W. Grimes ino_t ino; 5268fae3551SRodney W. Grimes { 527d2334e27SIan Dowse int i; 5288fae3551SRodney W. Grimes char *cp; 5298fae3551SRodney W. Grimes 5308fae3551SRodney W. Grimes spcl.c_type = type; 5318fae3551SRodney W. Grimes spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE); 5328fae3551SRodney W. Grimes writeheader(ino); 5338fae3551SRodney W. Grimes for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE) 5348fae3551SRodney W. Grimes writerec(cp, 0); 5358fae3551SRodney W. Grimes } 5368fae3551SRodney W. Grimes 5378fae3551SRodney W. Grimes /* 5388fae3551SRodney W. Grimes * Write a header record to the dump tape. 5398fae3551SRodney W. Grimes */ 5408fae3551SRodney W. Grimes void 5418fae3551SRodney W. Grimes writeheader(ino) 5428fae3551SRodney W. Grimes ino_t ino; 5438fae3551SRodney W. Grimes { 544d2334e27SIan Dowse int32_t sum, cnt, *lp; 5458fae3551SRodney W. Grimes 5468fae3551SRodney W. Grimes spcl.c_inumber = ino; 5478fae3551SRodney W. Grimes spcl.c_magic = NFS_MAGIC; 5488fae3551SRodney W. Grimes spcl.c_checksum = 0; 54997b465b1SDima Ruban lp = (int32_t *)&spcl; 5508fae3551SRodney W. Grimes sum = 0; 55197b465b1SDima Ruban cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t)); 5528fae3551SRodney W. Grimes while (--cnt >= 0) { 5538fae3551SRodney W. Grimes sum += *lp++; 5548fae3551SRodney W. Grimes sum += *lp++; 5558fae3551SRodney W. Grimes sum += *lp++; 5568fae3551SRodney W. Grimes sum += *lp++; 5578fae3551SRodney W. Grimes } 5588fae3551SRodney W. Grimes spcl.c_checksum = CHECKSUM - sum; 5598fae3551SRodney W. Grimes writerec((char *)&spcl, 1); 5608fae3551SRodney W. Grimes } 5618fae3551SRodney W. Grimes 5628fae3551SRodney W. Grimes struct dinode * 5638fae3551SRodney W. Grimes getino(inum) 5648fae3551SRodney W. Grimes ino_t inum; 5658fae3551SRodney W. Grimes { 5668fae3551SRodney W. Grimes static daddr_t minino, maxino; 5678fae3551SRodney W. Grimes static struct dinode inoblock[MAXINOPB]; 5688fae3551SRodney W. Grimes 5698fae3551SRodney W. Grimes curino = inum; 5708fae3551SRodney W. Grimes if (inum >= minino && inum < maxino) 5718fae3551SRodney W. Grimes return (&inoblock[inum - minino]); 5728fae3551SRodney W. Grimes bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock, 5738fae3551SRodney W. Grimes (int)sblock->fs_bsize); 5748fae3551SRodney W. Grimes minino = inum - (inum % INOPB(sblock)); 5758fae3551SRodney W. Grimes maxino = minino + INOPB(sblock); 5768fae3551SRodney W. Grimes return (&inoblock[inum - minino]); 5778fae3551SRodney W. Grimes } 5788fae3551SRodney W. Grimes 5798fae3551SRodney W. Grimes /* 5808fae3551SRodney W. Grimes * Read a chunk of data from the disk. 5818fae3551SRodney W. Grimes * Try to recover from hard errors by reading in sector sized pieces. 5828fae3551SRodney W. Grimes * Error recovery is attempted at most BREADEMAX times before seeking 5838fae3551SRodney W. Grimes * consent from the operator to continue. 5848fae3551SRodney W. Grimes */ 5858fae3551SRodney W. Grimes int breaderrors = 0; 5868fae3551SRodney W. Grimes #define BREADEMAX 32 5878fae3551SRodney W. Grimes 5888fae3551SRodney W. Grimes void 5898fae3551SRodney W. Grimes bread(blkno, buf, size) 5908fae3551SRodney W. Grimes daddr_t blkno; 5918fae3551SRodney W. Grimes char *buf; 5928fae3551SRodney W. Grimes int size; 5938fae3551SRodney W. Grimes { 5948fae3551SRodney W. Grimes int cnt, i; 5958fae3551SRodney W. Grimes 5968fae3551SRodney W. Grimes loop: 597be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, size, ((off_t)blkno << dev_bshift))) == 598be1bf707SMike Heffner size) 5998fae3551SRodney W. Grimes return; 6008fae3551SRodney W. Grimes if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) { 6018fae3551SRodney W. Grimes /* 6028fae3551SRodney W. Grimes * Trying to read the final fragment. 6038fae3551SRodney W. Grimes * 6048fae3551SRodney W. Grimes * NB - dump only works in TP_BSIZE blocks, hence 6058fae3551SRodney W. Grimes * rounds `dev_bsize' fragments up to TP_BSIZE pieces. 6068fae3551SRodney W. Grimes * It should be smarter about not actually trying to 6078fae3551SRodney W. Grimes * read more than it can get, but for the time being 6088fae3551SRodney W. Grimes * we punt and scale back the read only when it gets 6098fae3551SRodney W. Grimes * us into trouble. (mkm 9/25/83) 6108fae3551SRodney W. Grimes */ 6118fae3551SRodney W. Grimes size -= dev_bsize; 6128fae3551SRodney W. Grimes goto loop; 6138fae3551SRodney W. Grimes } 6148fae3551SRodney W. Grimes if (cnt == -1) 6158fae3551SRodney W. Grimes msg("read error from %s: %s: [block %d]: count=%d\n", 6168fae3551SRodney W. Grimes disk, strerror(errno), blkno, size); 6178fae3551SRodney W. Grimes else 6188fae3551SRodney W. Grimes msg("short read error from %s: [block %d]: count=%d, got=%d\n", 6198fae3551SRodney W. Grimes disk, blkno, size, cnt); 6208fae3551SRodney W. Grimes if (++breaderrors > BREADEMAX) { 6218fae3551SRodney W. Grimes msg("More than %d block read errors from %d\n", 6228fae3551SRodney W. Grimes BREADEMAX, disk); 6238fae3551SRodney W. Grimes broadcast("DUMP IS AILING!\n"); 6248fae3551SRodney W. Grimes msg("This is an unrecoverable error.\n"); 6258fae3551SRodney W. Grimes if (!query("Do you want to attempt to continue?")){ 6268fae3551SRodney W. Grimes dumpabort(0); 6278fae3551SRodney W. Grimes /*NOTREACHED*/ 6288fae3551SRodney W. Grimes } else 6298fae3551SRodney W. Grimes breaderrors = 0; 6308fae3551SRodney W. Grimes } 6318fae3551SRodney W. Grimes /* 6328fae3551SRodney W. Grimes * Zero buffer, then try to read each sector of buffer separately. 6338fae3551SRodney W. Grimes */ 634a37c38b8SPeter Wemm memset(buf, 0, size); 6358fae3551SRodney W. Grimes for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) { 636be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, (int)dev_bsize, 637be1bf707SMike Heffner ((off_t)blkno << dev_bshift))) == dev_bsize) 6388fae3551SRodney W. Grimes continue; 6398fae3551SRodney W. Grimes if (cnt == -1) { 6408fae3551SRodney W. Grimes msg("read error from %s: %s: [sector %d]: count=%d\n", 6418fae3551SRodney W. Grimes disk, strerror(errno), blkno, dev_bsize); 6428fae3551SRodney W. Grimes continue; 6438fae3551SRodney W. Grimes } 6448fae3551SRodney W. Grimes msg("short read error from %s: [sector %d]: count=%d, got=%d\n", 6458fae3551SRodney W. Grimes disk, blkno, dev_bsize, cnt); 6468fae3551SRodney W. Grimes } 6478fae3551SRodney W. Grimes } 648