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> 5337736675SWarner Losh #include <errno.h> 548fae3551SRodney W. Grimes #include <string.h> 558fae3551SRodney W. Grimes #include <unistd.h> 568fae3551SRodney W. Grimes 578fae3551SRodney W. Grimes #include "dump.h" 588fae3551SRodney W. Grimes 598fae3551SRodney W. Grimes #define HASDUMPEDFILE 0x1 608fae3551SRodney W. Grimes #define HASSUBDIRS 0x2 618fae3551SRodney W. Grimes 628fae3551SRodney W. Grimes #ifdef FS_44INODEFMT 638fae3551SRodney W. Grimes typedef quad_t fsizeT; 648fae3551SRodney W. Grimes #else 658fae3551SRodney W. Grimes typedef long fsizeT; 668fae3551SRodney W. Grimes #endif 678fae3551SRodney W. Grimes 682db673abSWarner Losh static int dirindir(ino_t ino, daddr_t blkno, int level, long *size, 692db673abSWarner Losh long *tapesize, int nodump); 702db673abSWarner Losh static void dmpindir(ino_t ino, daddr_t blk, int level, fsizeT *size); 712db673abSWarner Losh static int searchdir(ino_t ino, daddr_t blkno, long size, long filesize, 722db673abSWarner Losh long *tapesize, int nodump); 738fae3551SRodney W. Grimes 748fae3551SRodney W. Grimes /* 758fae3551SRodney W. Grimes * This is an estimation of the number of TP_BSIZE blocks in the file. 768fae3551SRodney W. Grimes * It estimates the number of blocks in files with holes by assuming 778fae3551SRodney W. Grimes * that all of the blocks accounted for by di_blocks are data blocks 788fae3551SRodney W. Grimes * (when some of the blocks are usually used for indirect pointers); 798fae3551SRodney W. Grimes * hence the estimate may be high. 808fae3551SRodney W. Grimes */ 818fae3551SRodney W. Grimes long 822db673abSWarner Losh blockest(struct dinode *dp) 838fae3551SRodney W. Grimes { 848fae3551SRodney W. Grimes long blkest, sizeest; 858fae3551SRodney W. Grimes 868fae3551SRodney W. Grimes /* 878fae3551SRodney W. Grimes * dp->di_size is the size of the file in bytes. 888fae3551SRodney W. Grimes * dp->di_blocks stores the number of sectors actually in the file. 898fae3551SRodney W. Grimes * If there are more sectors than the size would indicate, this just 908fae3551SRodney W. Grimes * means that there are indirect blocks in the file or unused 918fae3551SRodney W. Grimes * sectors in the last file block; we can safely ignore these 928fae3551SRodney W. Grimes * (blkest = sizeest below). 938fae3551SRodney W. Grimes * If the file is bigger than the number of sectors would indicate, 948fae3551SRodney W. Grimes * then the file has holes in it. In this case we must use the 958fae3551SRodney W. Grimes * block count to estimate the number of data blocks used, but 968fae3551SRodney W. Grimes * we use the actual size for estimating the number of indirect 978fae3551SRodney W. Grimes * dump blocks (sizeest vs. blkest in the indirect block 988fae3551SRodney W. Grimes * calculation). 998fae3551SRodney W. Grimes */ 1008fae3551SRodney W. Grimes blkest = howmany(dbtob(dp->di_blocks), TP_BSIZE); 1018fae3551SRodney W. Grimes sizeest = howmany(dp->di_size, TP_BSIZE); 1028fae3551SRodney W. Grimes if (blkest > sizeest) 1038fae3551SRodney W. Grimes blkest = sizeest; 1048fae3551SRodney W. Grimes if (dp->di_size > sblock->fs_bsize * NDADDR) { 1058fae3551SRodney W. Grimes /* calculate the number of indirect blocks on the dump tape */ 1068fae3551SRodney W. Grimes blkest += 1078fae3551SRodney W. Grimes howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE, 1088fae3551SRodney W. Grimes TP_NINDIR); 1098fae3551SRodney W. Grimes } 1108fae3551SRodney W. Grimes return (blkest + 1); 1118fae3551SRodney W. Grimes } 1128fae3551SRodney W. Grimes 1138fae3551SRodney W. Grimes /* Auxiliary macro to pick up files changed since previous dump. */ 1148fae3551SRodney W. Grimes #define CHANGEDSINCE(dp, t) \ 1158fae3551SRodney W. Grimes ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t)) 1168fae3551SRodney W. Grimes 1178fae3551SRodney W. Grimes /* The WANTTODUMP macro decides whether a file should be dumped. */ 1188fae3551SRodney W. Grimes #ifdef UF_NODUMP 1198fae3551SRodney W. Grimes #define WANTTODUMP(dp) \ 1208fae3551SRodney W. Grimes (CHANGEDSINCE(dp, spcl.c_ddate) && \ 1218fae3551SRodney W. Grimes (nonodump || ((dp)->di_flags & UF_NODUMP) != UF_NODUMP)) 1228fae3551SRodney W. Grimes #else 1238fae3551SRodney W. Grimes #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate) 1248fae3551SRodney W. Grimes #endif 1258fae3551SRodney W. Grimes 1268fae3551SRodney W. Grimes /* 1278fae3551SRodney W. Grimes * Dump pass 1. 1288fae3551SRodney W. Grimes * 1298fae3551SRodney W. Grimes * Walk the inode list for a filesystem to find all allocated inodes 1308fae3551SRodney W. Grimes * that have been modified since the previous dump time. Also, find all 1318fae3551SRodney W. Grimes * the directories in the filesystem. 1328fae3551SRodney W. Grimes */ 1338fae3551SRodney W. Grimes int 1342db673abSWarner Losh mapfiles(ino_t maxino, long *tapesize) 1358fae3551SRodney W. Grimes { 136d2334e27SIan Dowse int mode; 137d2334e27SIan Dowse ino_t ino; 138d2334e27SIan Dowse struct dinode *dp; 1398fae3551SRodney W. Grimes int anydirskipped = 0; 1408fae3551SRodney W. Grimes 1418fae3551SRodney W. Grimes for (ino = ROOTINO; ino < maxino; ino++) { 1428fae3551SRodney W. Grimes dp = getino(ino); 1438fae3551SRodney W. Grimes if ((mode = (dp->di_mode & IFMT)) == 0) 1448fae3551SRodney W. Grimes continue; 145801382faSDavid E. O'Brien /* 1462c8094f3SJordan K. Hubbard * Everything must go in usedinomap so that a check 1472c8094f3SJordan K. Hubbard * for "in dumpdirmap but not in usedinomap" to detect 1482c8094f3SJordan K. Hubbard * dirs with nodump set has a chance of succeeding 1492c8094f3SJordan K. Hubbard * (this is used in mapdirs()). 150801382faSDavid E. O'Brien */ 1512c8094f3SJordan K. Hubbard SETINO(ino, usedinomap); 1528fae3551SRodney W. Grimes if (mode == IFDIR) 1538fae3551SRodney W. Grimes SETINO(ino, dumpdirmap); 1548fae3551SRodney W. Grimes if (WANTTODUMP(dp)) { 1558fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 1568fae3551SRodney W. Grimes if (mode != IFREG && mode != IFDIR && mode != IFLNK) 1578fae3551SRodney W. Grimes *tapesize += 1; 1588fae3551SRodney W. Grimes else 1598fae3551SRodney W. Grimes *tapesize += blockest(dp); 1608fae3551SRodney W. Grimes continue; 1618fae3551SRodney W. Grimes } 1622c8094f3SJordan K. Hubbard if (mode == IFDIR) { 1632c8094f3SJordan K. Hubbard if (!nonodump && (dp->di_flags & UF_NODUMP)) 1642c8094f3SJordan K. Hubbard CLRINO(ino, usedinomap); 1658fae3551SRodney W. Grimes anydirskipped = 1; 1668fae3551SRodney W. Grimes } 1672c8094f3SJordan K. Hubbard } 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 1892db673abSWarner Losh mapdirs(ino_t maxino, long *tapesize) 1908fae3551SRodney W. Grimes { 191d2334e27SIan Dowse struct dinode *dp; 192d2334e27SIan Dowse int i, isdir, nodump; 193d2334e27SIan Dowse char *map; 194d2334e27SIan Dowse ino_t ino; 195801382faSDavid E. O'Brien struct dinode di; 1968fae3551SRodney W. Grimes long filesize; 1978fae3551SRodney W. Grimes int ret, change = 0; 1988fae3551SRodney W. Grimes 1998fae3551SRodney W. Grimes isdir = 0; /* XXX just to get gcc to shut up */ 2008fae3551SRodney W. Grimes for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 2018fae3551SRodney W. Grimes if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */ 2028fae3551SRodney W. Grimes isdir = *map++; 2038fae3551SRodney W. Grimes else 2048fae3551SRodney W. Grimes isdir >>= 1; 205801382faSDavid E. O'Brien /* 206801382faSDavid E. O'Brien * If a directory has been removed from usedinomap, it 207801382faSDavid E. O'Brien * either has the nodump flag set, or has inherited 208801382faSDavid E. O'Brien * it. Although a directory can't be in dumpinomap if 209801382faSDavid E. O'Brien * it isn't in usedinomap, we have to go through it to 210801382faSDavid E. O'Brien * propagate the nodump flag. 211801382faSDavid E. O'Brien */ 2122c8094f3SJordan K. Hubbard nodump = !nonodump && (TSTINO(ino, usedinomap) == 0); 213801382faSDavid E. O'Brien if ((isdir & 1) == 0 || (TSTINO(ino, dumpinomap) && !nodump)) 2148fae3551SRodney W. Grimes continue; 2158fae3551SRodney W. Grimes dp = getino(ino); 216801382faSDavid E. O'Brien di = *dp; /* inode buf may change in searchdir(). */ 217801382faSDavid E. O'Brien filesize = di.di_size; 2188fae3551SRodney W. Grimes for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) { 219801382faSDavid E. O'Brien if (di.di_db[i] != 0) 220801382faSDavid E. O'Brien ret |= searchdir(ino, di.di_db[i], 2218fae3551SRodney W. Grimes (long)dblksize(sblock, dp, i), 222801382faSDavid E. O'Brien filesize, tapesize, nodump); 2238fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2248fae3551SRodney W. Grimes filesize = 0; 2258fae3551SRodney W. Grimes else 2268fae3551SRodney W. Grimes filesize -= sblock->fs_bsize; 2278fae3551SRodney W. Grimes } 2288fae3551SRodney W. Grimes for (i = 0; filesize > 0 && i < NIADDR; i++) { 229801382faSDavid E. O'Brien if (di.di_ib[i] == 0) 2308fae3551SRodney W. Grimes continue; 231801382faSDavid E. O'Brien ret |= dirindir(ino, di.di_ib[i], i, &filesize, 232801382faSDavid E. O'Brien tapesize, nodump); 2338fae3551SRodney W. Grimes } 2348fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) { 2358fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 2368fae3551SRodney W. Grimes *tapesize += blockest(dp); 2378fae3551SRodney W. Grimes change = 1; 2388fae3551SRodney W. Grimes continue; 2398fae3551SRodney W. Grimes } 240801382faSDavid E. O'Brien if (nodump) { 241801382faSDavid E. O'Brien if (ret & HASSUBDIRS) 242801382faSDavid E. O'Brien change = 1; /* subdirs inherit nodump */ 243801382faSDavid E. O'Brien CLRINO(ino, dumpdirmap); 244801382faSDavid E. O'Brien } else if ((ret & HASSUBDIRS) == 0) 2458fae3551SRodney W. Grimes if (!TSTINO(ino, dumpinomap)) { 2468fae3551SRodney W. Grimes CLRINO(ino, dumpdirmap); 2478fae3551SRodney W. Grimes change = 1; 2488fae3551SRodney W. Grimes } 2498fae3551SRodney W. Grimes } 2508fae3551SRodney W. Grimes return (change); 2518fae3551SRodney W. Grimes } 2528fae3551SRodney W. Grimes 2538fae3551SRodney W. Grimes /* 2548fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be searched 2558fae3551SRodney W. Grimes * as directories. Quit as soon as any entry is found that will 2568fae3551SRodney W. Grimes * require the directory to be dumped. 2578fae3551SRodney W. Grimes */ 2588fae3551SRodney W. Grimes static int 2592db673abSWarner Losh dirindir(ino_t ino, daddr_t blkno, int ind_level, long *filesize, 2602db673abSWarner Losh long *tapesize, int nodump) 2618fae3551SRodney W. Grimes { 2628fae3551SRodney W. Grimes int ret = 0; 263d2334e27SIan Dowse int i; 2648fae3551SRodney W. Grimes daddr_t idblk[MAXNINDIR]; 2658fae3551SRodney W. Grimes 2668fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize); 2678fae3551SRodney W. Grimes if (ind_level <= 0) { 2688fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 2698fae3551SRodney W. Grimes blkno = idblk[i]; 2708fae3551SRodney W. Grimes if (blkno != 0) 2718fae3551SRodney W. Grimes ret |= searchdir(ino, blkno, sblock->fs_bsize, 272801382faSDavid E. O'Brien *filesize, tapesize, nodump); 2738fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2748fae3551SRodney W. Grimes *filesize = 0; 2758fae3551SRodney W. Grimes else 2768fae3551SRodney W. Grimes *filesize -= sblock->fs_bsize; 2778fae3551SRodney W. Grimes } 2788fae3551SRodney W. Grimes return (ret); 2798fae3551SRodney W. Grimes } 2808fae3551SRodney W. Grimes ind_level--; 2818fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 2828fae3551SRodney W. Grimes blkno = idblk[i]; 2838fae3551SRodney W. Grimes if (blkno != 0) 284801382faSDavid E. O'Brien ret |= dirindir(ino, blkno, ind_level, filesize, 285801382faSDavid E. O'Brien tapesize, nodump); 2868fae3551SRodney W. Grimes } 2878fae3551SRodney W. Grimes return (ret); 2888fae3551SRodney W. Grimes } 2898fae3551SRodney W. Grimes 2908fae3551SRodney W. Grimes /* 2918fae3551SRodney W. Grimes * Scan a disk block containing directory information looking to see if 2928fae3551SRodney W. Grimes * any of the entries are on the dump list and to see if the directory 2938fae3551SRodney W. Grimes * contains any subdirectories. 2948fae3551SRodney W. Grimes */ 2958fae3551SRodney W. Grimes static int 2962db673abSWarner Losh searchdir(ino_t ino, daddr_t blkno, long size, long filesize, 2972db673abSWarner Losh long *tapesize, int nodump) 2988fae3551SRodney W. Grimes { 299d2334e27SIan Dowse struct direct *dp; 300d2334e27SIan Dowse struct dinode *ip; 301d2334e27SIan Dowse long loc, ret = 0; 3028fae3551SRodney W. Grimes char dblk[MAXBSIZE]; 3038fae3551SRodney W. Grimes 3048fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), dblk, (int)size); 3058fae3551SRodney W. Grimes if (filesize < size) 3068fae3551SRodney W. Grimes size = filesize; 3078fae3551SRodney W. Grimes for (loc = 0; loc < size; ) { 3088fae3551SRodney W. Grimes dp = (struct direct *)(dblk + loc); 3098fae3551SRodney W. Grimes if (dp->d_reclen == 0) { 3108fae3551SRodney W. Grimes msg("corrupted directory, inumber %d\n", ino); 3118fae3551SRodney W. Grimes break; 3128fae3551SRodney W. Grimes } 3138fae3551SRodney W. Grimes loc += dp->d_reclen; 3148fae3551SRodney W. Grimes if (dp->d_ino == 0) 3158fae3551SRodney W. Grimes continue; 3168fae3551SRodney W. Grimes if (dp->d_name[0] == '.') { 3178fae3551SRodney W. Grimes if (dp->d_name[1] == '\0') 3188fae3551SRodney W. Grimes continue; 3198fae3551SRodney W. Grimes if (dp->d_name[1] == '.' && dp->d_name[2] == '\0') 3208fae3551SRodney W. Grimes continue; 3218fae3551SRodney W. Grimes } 322801382faSDavid E. O'Brien if (nodump) { 323801382faSDavid E. O'Brien ip = getino(dp->d_ino); 324801382faSDavid E. O'Brien if (TSTINO(dp->d_ino, dumpinomap)) { 325801382faSDavid E. O'Brien CLRINO(dp->d_ino, dumpinomap); 326801382faSDavid E. O'Brien *tapesize -= blockest(ip); 327801382faSDavid E. O'Brien } 32801629855SDavid E. O'Brien /* 32901629855SDavid E. O'Brien * Add back to dumpdirmap and remove from usedinomap 33001629855SDavid E. O'Brien * to propagate nodump. 33101629855SDavid E. O'Brien */ 332801382faSDavid E. O'Brien if ((ip->di_mode & IFMT) == IFDIR) { 333801382faSDavid E. O'Brien SETINO(dp->d_ino, dumpdirmap); 33401629855SDavid E. O'Brien CLRINO(dp->d_ino, usedinomap); 335801382faSDavid E. O'Brien ret |= HASSUBDIRS; 336801382faSDavid E. O'Brien } 337801382faSDavid E. O'Brien } else { 3388fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpinomap)) { 3398fae3551SRodney W. Grimes ret |= HASDUMPEDFILE; 3408fae3551SRodney W. Grimes if (ret & HASSUBDIRS) 3418fae3551SRodney W. Grimes break; 3428fae3551SRodney W. Grimes } 3438fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpdirmap)) { 3448fae3551SRodney W. Grimes ret |= HASSUBDIRS; 3458fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 3468fae3551SRodney W. Grimes break; 3478fae3551SRodney W. Grimes } 3488fae3551SRodney W. Grimes } 349801382faSDavid E. O'Brien } 3508fae3551SRodney W. Grimes return (ret); 3518fae3551SRodney W. Grimes } 3528fae3551SRodney W. Grimes 3538fae3551SRodney W. Grimes /* 3548fae3551SRodney W. Grimes * Dump passes 3 and 4. 3558fae3551SRodney W. Grimes * 3568fae3551SRodney W. Grimes * Dump the contents of an inode to tape. 3578fae3551SRodney W. Grimes */ 3588fae3551SRodney W. Grimes void 3592db673abSWarner Losh dumpino(struct dinode *dp, ino_t ino) 3608fae3551SRodney W. Grimes { 3618fae3551SRodney W. Grimes int ind_level, cnt; 3628fae3551SRodney W. Grimes fsizeT size; 3638fae3551SRodney W. Grimes char buf[TP_BSIZE]; 3648fae3551SRodney W. Grimes 3658fae3551SRodney W. Grimes if (newtape) { 3668fae3551SRodney W. Grimes newtape = 0; 3678fae3551SRodney W. Grimes dumpmap(dumpinomap, TS_BITS, ino); 3688fae3551SRodney W. Grimes } 3698fae3551SRodney W. Grimes CLRINO(ino, dumpinomap); 3708fae3551SRodney W. Grimes spcl.c_dinode = *dp; 3718fae3551SRodney W. Grimes spcl.c_type = TS_INODE; 3728fae3551SRodney W. Grimes spcl.c_count = 0; 3738fae3551SRodney W. Grimes switch (dp->di_mode & S_IFMT) { 3748fae3551SRodney W. Grimes 3758fae3551SRodney W. Grimes case 0: 3768fae3551SRodney W. Grimes /* 3778fae3551SRodney W. Grimes * Freed inode. 3788fae3551SRodney W. Grimes */ 3798fae3551SRodney W. Grimes return; 3808fae3551SRodney W. Grimes 3818fae3551SRodney W. Grimes case S_IFLNK: 3828fae3551SRodney W. Grimes /* 3838fae3551SRodney W. Grimes * Check for short symbolic link. 3848fae3551SRodney W. Grimes */ 3858fae3551SRodney W. Grimes #ifdef FS_44INODEFMT 3868fae3551SRodney W. Grimes if (dp->di_size > 0 && 3878fae3551SRodney W. Grimes dp->di_size < sblock->fs_maxsymlinklen) { 3888fae3551SRodney W. Grimes spcl.c_addr[0] = 1; 3898fae3551SRodney W. Grimes spcl.c_count = 1; 3908fae3551SRodney W. Grimes writeheader(ino); 391a37c38b8SPeter Wemm memmove(buf, dp->di_shortlink, (u_long)dp->di_size); 3928fae3551SRodney W. Grimes buf[dp->di_size] = '\0'; 3938fae3551SRodney W. Grimes writerec(buf, 0); 3948fae3551SRodney W. Grimes return; 3958fae3551SRodney W. Grimes } 3968fae3551SRodney W. Grimes #endif 3978fae3551SRodney W. Grimes /* fall through */ 3988fae3551SRodney W. Grimes 3998fae3551SRodney W. Grimes case S_IFDIR: 4008fae3551SRodney W. Grimes case S_IFREG: 4018fae3551SRodney W. Grimes if (dp->di_size > 0) 4028fae3551SRodney W. Grimes break; 4038fae3551SRodney W. Grimes /* fall through */ 4048fae3551SRodney W. Grimes 4058fae3551SRodney W. Grimes case S_IFIFO: 4068fae3551SRodney W. Grimes case S_IFSOCK: 4078fae3551SRodney W. Grimes case S_IFCHR: 4088fae3551SRodney W. Grimes case S_IFBLK: 4098fae3551SRodney W. Grimes writeheader(ino); 4108fae3551SRodney W. Grimes return; 4118fae3551SRodney W. Grimes 4128fae3551SRodney W. Grimes default: 4138fae3551SRodney W. Grimes msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT); 4148fae3551SRodney W. Grimes return; 4158fae3551SRodney W. Grimes } 4168fae3551SRodney W. Grimes if (dp->di_size > NDADDR * sblock->fs_bsize) 4178fae3551SRodney W. Grimes cnt = NDADDR * sblock->fs_frag; 4188fae3551SRodney W. Grimes else 4198fae3551SRodney W. Grimes cnt = howmany(dp->di_size, sblock->fs_fsize); 4208fae3551SRodney W. Grimes blksout(&dp->di_db[0], cnt, ino); 4218fae3551SRodney W. Grimes if ((size = dp->di_size - NDADDR * sblock->fs_bsize) <= 0) 4228fae3551SRodney W. Grimes return; 4238fae3551SRodney W. Grimes for (ind_level = 0; ind_level < NIADDR; ind_level++) { 4248fae3551SRodney W. Grimes dmpindir(ino, dp->di_ib[ind_level], ind_level, &size); 4258fae3551SRodney W. Grimes if (size <= 0) 4268fae3551SRodney W. Grimes return; 4278fae3551SRodney W. Grimes } 4288fae3551SRodney W. Grimes } 4298fae3551SRodney W. Grimes 4308fae3551SRodney W. Grimes /* 4318fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be dumped. 4328fae3551SRodney W. Grimes */ 4338fae3551SRodney W. Grimes static void 4342db673abSWarner Losh dmpindir(ino_t ino, daddr_t blk, int ind_level, fsizeT *size) 4358fae3551SRodney W. Grimes { 4368fae3551SRodney W. Grimes int i, cnt; 4378fae3551SRodney W. Grimes daddr_t idblk[MAXNINDIR]; 4388fae3551SRodney W. Grimes 4398fae3551SRodney W. Grimes if (blk != 0) 4408fae3551SRodney W. Grimes bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize); 4418fae3551SRodney W. Grimes else 442a37c38b8SPeter Wemm memset(idblk, 0, (int)sblock->fs_bsize); 4438fae3551SRodney W. Grimes if (ind_level <= 0) { 4448fae3551SRodney W. Grimes if (*size < NINDIR(sblock) * sblock->fs_bsize) 4458fae3551SRodney W. Grimes cnt = howmany(*size, sblock->fs_fsize); 4468fae3551SRodney W. Grimes else 4478fae3551SRodney W. Grimes cnt = NINDIR(sblock) * sblock->fs_frag; 4488fae3551SRodney W. Grimes *size -= NINDIR(sblock) * sblock->fs_bsize; 4498fae3551SRodney W. Grimes blksout(&idblk[0], cnt, ino); 4508fae3551SRodney W. Grimes return; 4518fae3551SRodney W. Grimes } 4528fae3551SRodney W. Grimes ind_level--; 4538fae3551SRodney W. Grimes for (i = 0; i < NINDIR(sblock); i++) { 4548fae3551SRodney W. Grimes dmpindir(ino, idblk[i], ind_level, size); 4558fae3551SRodney W. Grimes if (*size <= 0) 4568fae3551SRodney W. Grimes return; 4578fae3551SRodney W. Grimes } 4588fae3551SRodney W. Grimes } 4598fae3551SRodney W. Grimes 4608fae3551SRodney W. Grimes /* 4618fae3551SRodney W. Grimes * Collect up the data into tape record sized buffers and output them. 4628fae3551SRodney W. Grimes */ 4638fae3551SRodney W. Grimes void 4642db673abSWarner Losh blksout(daddr_t *blkp, int frags, ino_t ino) 4658fae3551SRodney W. Grimes { 466d2334e27SIan Dowse daddr_t *bp; 4678fae3551SRodney W. Grimes int i, j, count, blks, tbperdb; 4688fae3551SRodney W. Grimes 4698fae3551SRodney W. Grimes blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 4708fae3551SRodney W. Grimes tbperdb = sblock->fs_bsize >> tp_bshift; 4718fae3551SRodney W. Grimes for (i = 0; i < blks; i += TP_NINDIR) { 4728fae3551SRodney W. Grimes if (i + TP_NINDIR > blks) 4738fae3551SRodney W. Grimes count = blks; 4748fae3551SRodney W. Grimes else 4758fae3551SRodney W. Grimes count = i + TP_NINDIR; 4768fae3551SRodney W. Grimes for (j = i; j < count; j++) 4778fae3551SRodney W. Grimes if (blkp[j / tbperdb] != 0) 4788fae3551SRodney W. Grimes spcl.c_addr[j - i] = 1; 4798fae3551SRodney W. Grimes else 4808fae3551SRodney W. Grimes spcl.c_addr[j - i] = 0; 4818fae3551SRodney W. Grimes spcl.c_count = count - i; 4828fae3551SRodney W. Grimes writeheader(ino); 4838fae3551SRodney W. Grimes bp = &blkp[i / tbperdb]; 4848fae3551SRodney W. Grimes for (j = i; j < count; j += tbperdb, bp++) 48516c4e408SBill Fumerola if (*bp != 0) { 4868fae3551SRodney W. Grimes if (j + tbperdb <= count) 4878fae3551SRodney W. Grimes dumpblock(*bp, (int)sblock->fs_bsize); 4888fae3551SRodney W. Grimes else 4898fae3551SRodney W. Grimes dumpblock(*bp, (count - j) * TP_BSIZE); 49016c4e408SBill Fumerola } 4918fae3551SRodney W. Grimes spcl.c_type = TS_ADDR; 4928fae3551SRodney W. Grimes } 4938fae3551SRodney W. Grimes } 4948fae3551SRodney W. Grimes 4958fae3551SRodney W. Grimes /* 4968fae3551SRodney W. Grimes * Dump a map to the tape. 4978fae3551SRodney W. Grimes */ 4988fae3551SRodney W. Grimes void 4992db673abSWarner Losh dumpmap(char *map, int type, ino_t ino) 5008fae3551SRodney W. Grimes { 501d2334e27SIan Dowse int i; 5028fae3551SRodney W. Grimes char *cp; 5038fae3551SRodney W. Grimes 5048fae3551SRodney W. Grimes spcl.c_type = type; 5058fae3551SRodney W. Grimes spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE); 5068fae3551SRodney W. Grimes writeheader(ino); 5078fae3551SRodney W. Grimes for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE) 5088fae3551SRodney W. Grimes writerec(cp, 0); 5098fae3551SRodney W. Grimes } 5108fae3551SRodney W. Grimes 5118fae3551SRodney W. Grimes /* 5128fae3551SRodney W. Grimes * Write a header record to the dump tape. 5138fae3551SRodney W. Grimes */ 5148fae3551SRodney W. Grimes void 5152db673abSWarner Losh writeheader(ino_t ino) 5168fae3551SRodney W. Grimes { 517d2334e27SIan Dowse int32_t sum, cnt, *lp; 5188fae3551SRodney W. Grimes 5198fae3551SRodney W. Grimes spcl.c_inumber = ino; 5208fae3551SRodney W. Grimes spcl.c_magic = NFS_MAGIC; 5218fae3551SRodney W. Grimes spcl.c_checksum = 0; 52297b465b1SDima Ruban lp = (int32_t *)&spcl; 5238fae3551SRodney W. Grimes sum = 0; 52497b465b1SDima Ruban cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t)); 5258fae3551SRodney W. Grimes while (--cnt >= 0) { 5268fae3551SRodney W. Grimes sum += *lp++; 5278fae3551SRodney W. Grimes sum += *lp++; 5288fae3551SRodney W. Grimes sum += *lp++; 5298fae3551SRodney W. Grimes sum += *lp++; 5308fae3551SRodney W. Grimes } 5318fae3551SRodney W. Grimes spcl.c_checksum = CHECKSUM - sum; 5328fae3551SRodney W. Grimes writerec((char *)&spcl, 1); 5338fae3551SRodney W. Grimes } 5348fae3551SRodney W. Grimes 5358fae3551SRodney W. Grimes struct dinode * 5362db673abSWarner Losh getino(ino_t inum) 5378fae3551SRodney W. Grimes { 5388fae3551SRodney W. Grimes static daddr_t minino, maxino; 5398fae3551SRodney W. Grimes static struct dinode inoblock[MAXINOPB]; 5408fae3551SRodney W. Grimes 5418fae3551SRodney W. Grimes curino = inum; 5428fae3551SRodney W. Grimes if (inum >= minino && inum < maxino) 5438fae3551SRodney W. Grimes return (&inoblock[inum - minino]); 5448fae3551SRodney W. Grimes bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock, 5458fae3551SRodney W. Grimes (int)sblock->fs_bsize); 5468fae3551SRodney W. Grimes minino = inum - (inum % INOPB(sblock)); 5478fae3551SRodney W. Grimes maxino = minino + INOPB(sblock); 5488fae3551SRodney W. Grimes return (&inoblock[inum - minino]); 5498fae3551SRodney W. Grimes } 5508fae3551SRodney W. Grimes 5518fae3551SRodney W. Grimes /* 5528fae3551SRodney W. Grimes * Read a chunk of data from the disk. 5538fae3551SRodney W. Grimes * Try to recover from hard errors by reading in sector sized pieces. 5548fae3551SRodney W. Grimes * Error recovery is attempted at most BREADEMAX times before seeking 5558fae3551SRodney W. Grimes * consent from the operator to continue. 5568fae3551SRodney W. Grimes */ 5578fae3551SRodney W. Grimes int breaderrors = 0; 5588fae3551SRodney W. Grimes #define BREADEMAX 32 5598fae3551SRodney W. Grimes 5608fae3551SRodney W. Grimes void 5612db673abSWarner Losh bread(daddr_t blkno, char *buf, int size) 5628fae3551SRodney W. Grimes { 5638fae3551SRodney W. Grimes int cnt, i; 5648fae3551SRodney W. Grimes 5658fae3551SRodney W. Grimes loop: 566be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, size, ((off_t)blkno << dev_bshift))) == 567be1bf707SMike Heffner size) 5688fae3551SRodney W. Grimes return; 5698fae3551SRodney W. Grimes if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) { 5708fae3551SRodney W. Grimes /* 5718fae3551SRodney W. Grimes * Trying to read the final fragment. 5728fae3551SRodney W. Grimes * 5738fae3551SRodney W. Grimes * NB - dump only works in TP_BSIZE blocks, hence 5748fae3551SRodney W. Grimes * rounds `dev_bsize' fragments up to TP_BSIZE pieces. 5758fae3551SRodney W. Grimes * It should be smarter about not actually trying to 5768fae3551SRodney W. Grimes * read more than it can get, but for the time being 5778fae3551SRodney W. Grimes * we punt and scale back the read only when it gets 5788fae3551SRodney W. Grimes * us into trouble. (mkm 9/25/83) 5798fae3551SRodney W. Grimes */ 5808fae3551SRodney W. Grimes size -= dev_bsize; 5818fae3551SRodney W. Grimes goto loop; 5828fae3551SRodney W. Grimes } 5838fae3551SRodney W. Grimes if (cnt == -1) 5848fae3551SRodney W. Grimes msg("read error from %s: %s: [block %d]: count=%d\n", 5858fae3551SRodney W. Grimes disk, strerror(errno), blkno, size); 5868fae3551SRodney W. Grimes else 5878fae3551SRodney W. Grimes msg("short read error from %s: [block %d]: count=%d, got=%d\n", 5888fae3551SRodney W. Grimes disk, blkno, size, cnt); 5898fae3551SRodney W. Grimes if (++breaderrors > BREADEMAX) { 5908fae3551SRodney W. Grimes msg("More than %d block read errors from %d\n", 5918fae3551SRodney W. Grimes BREADEMAX, disk); 5928fae3551SRodney W. Grimes broadcast("DUMP IS AILING!\n"); 5938fae3551SRodney W. Grimes msg("This is an unrecoverable error.\n"); 5948fae3551SRodney W. Grimes if (!query("Do you want to attempt to continue?")){ 5958fae3551SRodney W. Grimes dumpabort(0); 5968fae3551SRodney W. Grimes /*NOTREACHED*/ 5978fae3551SRodney W. Grimes } else 5988fae3551SRodney W. Grimes breaderrors = 0; 5998fae3551SRodney W. Grimes } 6008fae3551SRodney W. Grimes /* 6018fae3551SRodney W. Grimes * Zero buffer, then try to read each sector of buffer separately. 6028fae3551SRodney W. Grimes */ 603a37c38b8SPeter Wemm memset(buf, 0, size); 6048fae3551SRodney W. Grimes for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) { 605be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, (int)dev_bsize, 606be1bf707SMike Heffner ((off_t)blkno << dev_bshift))) == dev_bsize) 6078fae3551SRodney W. Grimes continue; 6088fae3551SRodney W. Grimes if (cnt == -1) { 6098fae3551SRodney W. Grimes msg("read error from %s: %s: [sector %d]: count=%d\n", 6108fae3551SRodney W. Grimes disk, strerror(errno), blkno, dev_bsize); 6118fae3551SRodney W. Grimes continue; 6128fae3551SRodney W. Grimes } 6138fae3551SRodney W. Grimes msg("short read error from %s: [sector %d]: count=%d, got=%d\n", 6148fae3551SRodney W. Grimes disk, blkno, dev_bsize, cnt); 6158fae3551SRodney W. Grimes } 6168fae3551SRodney W. Grimes } 617