18fae3551SRodney W. Grimes /*- 28fae3551SRodney W. Grimes * Copyright (c) 1980, 1988, 1991, 1993 38fae3551SRodney W. Grimes * The Regents of the University of California. All rights reserved. 48fae3551SRodney W. Grimes * 58fae3551SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 68fae3551SRodney W. Grimes * modification, are permitted provided that the following conditions 78fae3551SRodney W. Grimes * are met: 88fae3551SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 98fae3551SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 108fae3551SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 118fae3551SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 128fae3551SRodney W. Grimes * documentation and/or other materials provided with the distribution. 138fae3551SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 148fae3551SRodney W. Grimes * must display the following acknowledgement: 158fae3551SRodney W. Grimes * This product includes software developed by the University of 168fae3551SRodney W. Grimes * California, Berkeley and its contributors. 178fae3551SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 188fae3551SRodney W. Grimes * may be used to endorse or promote products derived from this software 198fae3551SRodney W. Grimes * without specific prior written permission. 208fae3551SRodney W. Grimes * 218fae3551SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 228fae3551SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 238fae3551SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 248fae3551SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 258fae3551SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 268fae3551SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 278fae3551SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 288fae3551SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 298fae3551SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 308fae3551SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 318fae3551SRodney W. Grimes * SUCH DAMAGE. 328fae3551SRodney W. Grimes */ 338fae3551SRodney W. Grimes 348fae3551SRodney W. Grimes #ifndef lint 357580ffbbSPhilippe Charnier #if 0 36a37c38b8SPeter Wemm static char sccsid[] = "@(#)traverse.c 8.7 (Berkeley) 6/15/95"; 377580ffbbSPhilippe Charnier #endif 387580ffbbSPhilippe Charnier static const char rcsid[] = 397f3dea24SPeter Wemm "$FreeBSD$"; 408fae3551SRodney W. Grimes #endif /* not lint */ 418fae3551SRodney W. Grimes 428fae3551SRodney W. Grimes #include <sys/param.h> 438fae3551SRodney W. Grimes #include <sys/stat.h> 448fae3551SRodney W. Grimes 458fae3551SRodney W. Grimes #include <ufs/ufs/dir.h> 468fae3551SRodney W. Grimes #include <ufs/ufs/dinode.h> 47a37c38b8SPeter Wemm #include <ufs/ffs/fs.h> 488fae3551SRodney W. Grimes 498fae3551SRodney W. Grimes #include <protocols/dumprestore.h> 508fae3551SRodney W. Grimes 518fae3551SRodney W. Grimes #include <ctype.h> 5237736675SWarner Losh #include <errno.h> 53617dbd3cSIan Dowse #include <inttypes.h> 5489fdc4e1SMike Barcroft #include <limits.h> 55617dbd3cSIan Dowse #include <stdio.h> 561c85e6a3SKirk McKusick #include <stdlib.h> 57617dbd3cSIan Dowse #include <string.h> 58617dbd3cSIan Dowse #include <timeconv.h> 59617dbd3cSIan Dowse #include <unistd.h> 608fae3551SRodney W. Grimes 618fae3551SRodney W. Grimes #include "dump.h" 628fae3551SRodney W. Grimes 631c85e6a3SKirk McKusick union dinode { 641c85e6a3SKirk McKusick struct ufs1_dinode dp1; 651c85e6a3SKirk McKusick struct ufs2_dinode dp2; 661c85e6a3SKirk McKusick }; 671c85e6a3SKirk McKusick #define DIP(dp, field) \ 681c85e6a3SKirk McKusick ((sblock->fs_magic == FS_UFS1_MAGIC) ? \ 691c85e6a3SKirk McKusick (dp)->dp1.field : (dp)->dp2.field) 701c85e6a3SKirk McKusick 718fae3551SRodney W. Grimes #define HASDUMPEDFILE 0x1 728fae3551SRodney W. Grimes #define HASSUBDIRS 0x2 738fae3551SRodney W. Grimes 741c85e6a3SKirk McKusick static int dirindir(ino_t ino, ufs2_daddr_t blkno, int level, long *size, 752db673abSWarner Losh long *tapesize, int nodump); 761c85e6a3SKirk McKusick static void dmpindir(ino_t ino, ufs2_daddr_t blk, int level, off_t *size); 771c85e6a3SKirk McKusick static int searchdir(ino_t ino, ufs2_daddr_t blkno, long size, long filesize, 782db673abSWarner Losh long *tapesize, int nodump); 798fae3551SRodney W. Grimes 808fae3551SRodney W. Grimes /* 818fae3551SRodney W. Grimes * This is an estimation of the number of TP_BSIZE blocks in the file. 828fae3551SRodney W. Grimes * It estimates the number of blocks in files with holes by assuming 838fae3551SRodney W. Grimes * that all of the blocks accounted for by di_blocks are data blocks 848fae3551SRodney W. Grimes * (when some of the blocks are usually used for indirect pointers); 858fae3551SRodney W. Grimes * hence the estimate may be high. 868fae3551SRodney W. Grimes */ 878fae3551SRodney W. Grimes long 881c85e6a3SKirk McKusick blockest(union dinode *dp) 898fae3551SRodney W. Grimes { 908fae3551SRodney W. Grimes long blkest, sizeest; 918fae3551SRodney W. Grimes 928fae3551SRodney W. Grimes /* 938fae3551SRodney W. Grimes * dp->di_size is the size of the file in bytes. 948fae3551SRodney W. Grimes * dp->di_blocks stores the number of sectors actually in the file. 958fae3551SRodney W. Grimes * If there are more sectors than the size would indicate, this just 968fae3551SRodney W. Grimes * means that there are indirect blocks in the file or unused 978fae3551SRodney W. Grimes * sectors in the last file block; we can safely ignore these 988fae3551SRodney W. Grimes * (blkest = sizeest below). 998fae3551SRodney W. Grimes * If the file is bigger than the number of sectors would indicate, 1008fae3551SRodney W. Grimes * then the file has holes in it. In this case we must use the 1018fae3551SRodney W. Grimes * block count to estimate the number of data blocks used, but 1028fae3551SRodney W. Grimes * we use the actual size for estimating the number of indirect 1038fae3551SRodney W. Grimes * dump blocks (sizeest vs. blkest in the indirect block 1048fae3551SRodney W. Grimes * calculation). 1058fae3551SRodney W. Grimes */ 1061c85e6a3SKirk McKusick blkest = howmany(dbtob(DIP(dp, di_blocks)), TP_BSIZE); 1071c85e6a3SKirk McKusick sizeest = howmany(DIP(dp, di_size), TP_BSIZE); 1088fae3551SRodney W. Grimes if (blkest > sizeest) 1098fae3551SRodney W. Grimes blkest = sizeest; 1101c85e6a3SKirk McKusick if (DIP(dp, di_size) > sblock->fs_bsize * NDADDR) { 1118fae3551SRodney W. Grimes /* calculate the number of indirect blocks on the dump tape */ 1128fae3551SRodney W. Grimes blkest += 1138fae3551SRodney W. Grimes howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE, 1148fae3551SRodney W. Grimes TP_NINDIR); 1158fae3551SRodney W. Grimes } 1168fae3551SRodney W. Grimes return (blkest + 1); 1178fae3551SRodney W. Grimes } 1188fae3551SRodney W. Grimes 1198fae3551SRodney W. Grimes /* Auxiliary macro to pick up files changed since previous dump. */ 1208fae3551SRodney W. Grimes #define CHANGEDSINCE(dp, t) \ 1211c85e6a3SKirk McKusick (DIP(dp, di_mtime) >= (t) || DIP(dp, di_ctime) >= (t)) 1228fae3551SRodney W. Grimes 1238fae3551SRodney W. Grimes /* The WANTTODUMP macro decides whether a file should be dumped. */ 1248fae3551SRodney W. Grimes #ifdef UF_NODUMP 1258fae3551SRodney W. Grimes #define WANTTODUMP(dp) \ 1268fae3551SRodney W. Grimes (CHANGEDSINCE(dp, spcl.c_ddate) && \ 1271c85e6a3SKirk McKusick (nonodump || (DIP(dp, di_flags) & UF_NODUMP) != UF_NODUMP)) 1288fae3551SRodney W. Grimes #else 1298fae3551SRodney W. Grimes #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate) 1308fae3551SRodney W. Grimes #endif 1318fae3551SRodney W. Grimes 1328fae3551SRodney W. Grimes /* 1338fae3551SRodney W. Grimes * Dump pass 1. 1348fae3551SRodney W. Grimes * 1358fae3551SRodney W. Grimes * Walk the inode list for a file system to find all allocated inodes 1368fae3551SRodney W. Grimes * that have been modified since the previous dump time. Also, find all 1378fae3551SRodney W. Grimes * the directories in the file system. 1388fae3551SRodney W. Grimes */ 1398fae3551SRodney W. Grimes int 1402db673abSWarner Losh mapfiles(ino_t maxino, long *tapesize) 1418fae3551SRodney W. Grimes { 142d2334e27SIan Dowse int mode; 143d2334e27SIan Dowse ino_t ino; 1441c85e6a3SKirk McKusick union dinode *dp; 1458fae3551SRodney W. Grimes int anydirskipped = 0; 1468fae3551SRodney W. Grimes 1478fae3551SRodney W. Grimes for (ino = ROOTINO; ino < maxino; ino++) { 1481c85e6a3SKirk McKusick dp = getino(ino, &mode); 1491c85e6a3SKirk McKusick if (mode == 0) 1508fae3551SRodney W. Grimes continue; 151801382faSDavid E. O'Brien /* 1522c8094f3SJordan K. Hubbard * Everything must go in usedinomap so that a check 1532c8094f3SJordan K. Hubbard * for "in dumpdirmap but not in usedinomap" to detect 1542c8094f3SJordan K. Hubbard * dirs with nodump set has a chance of succeeding 1552c8094f3SJordan K. Hubbard * (this is used in mapdirs()). 156801382faSDavid E. O'Brien */ 1572c8094f3SJordan K. Hubbard SETINO(ino, usedinomap); 1588fae3551SRodney W. Grimes if (mode == IFDIR) 1598fae3551SRodney W. Grimes SETINO(ino, dumpdirmap); 1608fae3551SRodney W. Grimes if (WANTTODUMP(dp)) { 1618fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 1628fae3551SRodney W. Grimes if (mode != IFREG && mode != IFDIR && mode != IFLNK) 1638fae3551SRodney W. Grimes *tapesize += 1; 1648fae3551SRodney W. Grimes else 1658fae3551SRodney W. Grimes *tapesize += blockest(dp); 1668fae3551SRodney W. Grimes continue; 1678fae3551SRodney W. Grimes } 1682c8094f3SJordan K. Hubbard if (mode == IFDIR) { 1691c85e6a3SKirk McKusick if (!nonodump && (DIP(dp, di_flags) & UF_NODUMP)) 1702c8094f3SJordan K. Hubbard CLRINO(ino, usedinomap); 1718fae3551SRodney W. Grimes anydirskipped = 1; 1728fae3551SRodney W. Grimes } 1732c8094f3SJordan K. Hubbard } 1748fae3551SRodney W. Grimes /* 1758fae3551SRodney W. Grimes * Restore gets very upset if the root is not dumped, 1768fae3551SRodney W. Grimes * so ensure that it always is dumped. 1778fae3551SRodney W. Grimes */ 1788fae3551SRodney W. Grimes SETINO(ROOTINO, dumpinomap); 1798fae3551SRodney W. Grimes return (anydirskipped); 1808fae3551SRodney W. Grimes } 1818fae3551SRodney W. Grimes 1828fae3551SRodney W. Grimes /* 1838fae3551SRodney W. Grimes * Dump pass 2. 1848fae3551SRodney W. Grimes * 1858fae3551SRodney W. Grimes * Scan each directory on the file system to see if it has any modified 1868fae3551SRodney W. Grimes * files in it. If it does, and has not already been added to the dump 1878fae3551SRodney W. Grimes * list (because it was itself modified), then add it. If a directory 1888fae3551SRodney W. Grimes * has not been modified itself, contains no modified files and has no 1898fae3551SRodney W. Grimes * subdirectories, then it can be deleted from the dump list and from 1908fae3551SRodney W. Grimes * the list of directories. By deleting it from the list of directories, 1918fae3551SRodney W. Grimes * its parent may now qualify for the same treatment on this or a later 1928fae3551SRodney W. Grimes * pass using this algorithm. 1938fae3551SRodney W. Grimes */ 1948fae3551SRodney W. Grimes int 1952db673abSWarner Losh mapdirs(ino_t maxino, long *tapesize) 1968fae3551SRodney W. Grimes { 1971c85e6a3SKirk McKusick union dinode *dp; 198d2334e27SIan Dowse int i, isdir, nodump; 199d2334e27SIan Dowse char *map; 200d2334e27SIan Dowse ino_t ino; 2011c85e6a3SKirk McKusick union dinode di; 2028fae3551SRodney W. Grimes long filesize; 2038fae3551SRodney W. Grimes int ret, change = 0; 2048fae3551SRodney W. Grimes 2058fae3551SRodney W. Grimes isdir = 0; /* XXX just to get gcc to shut up */ 2068fae3551SRodney W. Grimes for (map = dumpdirmap, ino = 1; ino < maxino; ino++) { 20789fdc4e1SMike Barcroft if (((ino - 1) % CHAR_BIT) == 0) /* map is offset by 1 */ 2088fae3551SRodney W. Grimes isdir = *map++; 2098fae3551SRodney W. Grimes else 2108fae3551SRodney W. Grimes isdir >>= 1; 211801382faSDavid E. O'Brien /* 212801382faSDavid E. O'Brien * If a directory has been removed from usedinomap, it 213801382faSDavid E. O'Brien * either has the nodump flag set, or has inherited 214801382faSDavid E. O'Brien * it. Although a directory can't be in dumpinomap if 215801382faSDavid E. O'Brien * it isn't in usedinomap, we have to go through it to 216801382faSDavid E. O'Brien * propagate the nodump flag. 217801382faSDavid E. O'Brien */ 2182c8094f3SJordan K. Hubbard nodump = !nonodump && (TSTINO(ino, usedinomap) == 0); 219801382faSDavid E. O'Brien if ((isdir & 1) == 0 || (TSTINO(ino, dumpinomap) && !nodump)) 2208fae3551SRodney W. Grimes continue; 2211c85e6a3SKirk McKusick dp = getino(ino, &i); 2221c85e6a3SKirk McKusick /* 2231c85e6a3SKirk McKusick * inode buf may change in searchdir(). 2241c85e6a3SKirk McKusick */ 2251c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 2261c85e6a3SKirk McKusick di.dp1 = dp->dp1; 2271c85e6a3SKirk McKusick else 2281c85e6a3SKirk McKusick di.dp2 = dp->dp2; 2291c85e6a3SKirk McKusick filesize = DIP(&di, di_size); 2308fae3551SRodney W. Grimes for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) { 2311c85e6a3SKirk McKusick if (DIP(&di, di_db[i]) != 0) 2321c85e6a3SKirk McKusick ret |= searchdir(ino, DIP(&di, di_db[i]), 2331c85e6a3SKirk McKusick (long)sblksize(sblock, DIP(dp, di_size), i), 234801382faSDavid E. O'Brien filesize, tapesize, nodump); 2358fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2368fae3551SRodney W. Grimes filesize = 0; 2378fae3551SRodney W. Grimes else 2388fae3551SRodney W. Grimes filesize -= sblock->fs_bsize; 2398fae3551SRodney W. Grimes } 2408fae3551SRodney W. Grimes for (i = 0; filesize > 0 && i < NIADDR; i++) { 2411c85e6a3SKirk McKusick if (DIP(&di, di_ib[i]) == 0) 2428fae3551SRodney W. Grimes continue; 2431c85e6a3SKirk McKusick ret |= dirindir(ino, DIP(&di, di_ib[i]), i, &filesize, 244801382faSDavid E. O'Brien tapesize, nodump); 2458fae3551SRodney W. Grimes } 2468fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) { 2478fae3551SRodney W. Grimes SETINO(ino, dumpinomap); 2488fae3551SRodney W. Grimes *tapesize += blockest(dp); 2498fae3551SRodney W. Grimes change = 1; 2508fae3551SRodney W. Grimes continue; 2518fae3551SRodney W. Grimes } 252801382faSDavid E. O'Brien if (nodump) { 253801382faSDavid E. O'Brien if (ret & HASSUBDIRS) 254801382faSDavid E. O'Brien change = 1; /* subdirs inherit nodump */ 255801382faSDavid E. O'Brien CLRINO(ino, dumpdirmap); 256801382faSDavid E. O'Brien } else if ((ret & HASSUBDIRS) == 0) 2578fae3551SRodney W. Grimes if (!TSTINO(ino, dumpinomap)) { 2588fae3551SRodney W. Grimes CLRINO(ino, dumpdirmap); 2598fae3551SRodney W. Grimes change = 1; 2608fae3551SRodney W. Grimes } 2618fae3551SRodney W. Grimes } 2628fae3551SRodney W. Grimes return (change); 2638fae3551SRodney W. Grimes } 2648fae3551SRodney W. Grimes 2658fae3551SRodney W. Grimes /* 2668fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be searched 2678fae3551SRodney W. Grimes * as directories. Quit as soon as any entry is found that will 2688fae3551SRodney W. Grimes * require the directory to be dumped. 2698fae3551SRodney W. Grimes */ 2708fae3551SRodney W. Grimes static int 2711c85e6a3SKirk McKusick dirindir( 2721c85e6a3SKirk McKusick ino_t ino, 2731c85e6a3SKirk McKusick ufs2_daddr_t blkno, 2741c85e6a3SKirk McKusick int ind_level, 2751c85e6a3SKirk McKusick long *filesize, 2761c85e6a3SKirk McKusick long *tapesize, 2771c85e6a3SKirk McKusick int nodump) 2788fae3551SRodney W. Grimes { 2797680e41cSIan Dowse union { 2807680e41cSIan Dowse ufs1_daddr_t ufs1[MAXBSIZE / sizeof(ufs1_daddr_t)]; 2817680e41cSIan Dowse ufs2_daddr_t ufs2[MAXBSIZE / sizeof(ufs2_daddr_t)]; 2827680e41cSIan Dowse } idblk; 2838fae3551SRodney W. Grimes int ret = 0; 284d2334e27SIan Dowse int i; 2858fae3551SRodney W. Grimes 2867680e41cSIan Dowse bread(fsbtodb(sblock, blkno), (char *)&idblk, (int)sblock->fs_bsize); 2878fae3551SRodney W. Grimes if (ind_level <= 0) { 2888fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 2891c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 2907680e41cSIan Dowse blkno = idblk.ufs1[i]; 2911c85e6a3SKirk McKusick else 2927680e41cSIan Dowse blkno = idblk.ufs2[i]; 2938fae3551SRodney W. Grimes if (blkno != 0) 2948fae3551SRodney W. Grimes ret |= searchdir(ino, blkno, sblock->fs_bsize, 295801382faSDavid E. O'Brien *filesize, tapesize, nodump); 2968fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 2978fae3551SRodney W. Grimes *filesize = 0; 2988fae3551SRodney W. Grimes else 2998fae3551SRodney W. Grimes *filesize -= sblock->fs_bsize; 3008fae3551SRodney W. Grimes } 3018fae3551SRodney W. Grimes return (ret); 3028fae3551SRodney W. Grimes } 3038fae3551SRodney W. Grimes ind_level--; 3048fae3551SRodney W. Grimes for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) { 3051c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 3067680e41cSIan Dowse blkno = idblk.ufs1[i]; 3071c85e6a3SKirk McKusick else 3087680e41cSIan Dowse blkno = idblk.ufs2[i]; 3098fae3551SRodney W. Grimes if (blkno != 0) 310801382faSDavid E. O'Brien ret |= dirindir(ino, blkno, ind_level, filesize, 311801382faSDavid E. O'Brien tapesize, nodump); 3128fae3551SRodney W. Grimes } 3138fae3551SRodney W. Grimes return (ret); 3148fae3551SRodney W. Grimes } 3158fae3551SRodney W. Grimes 3168fae3551SRodney W. Grimes /* 3178fae3551SRodney W. Grimes * Scan a disk block containing directory information looking to see if 3188fae3551SRodney W. Grimes * any of the entries are on the dump list and to see if the directory 3198fae3551SRodney W. Grimes * contains any subdirectories. 3208fae3551SRodney W. Grimes */ 3218fae3551SRodney W. Grimes static int 3221c85e6a3SKirk McKusick searchdir( 3231c85e6a3SKirk McKusick ino_t ino, 3241c85e6a3SKirk McKusick ufs2_daddr_t blkno, 3251c85e6a3SKirk McKusick long size, 3261c85e6a3SKirk McKusick long filesize, 3271c85e6a3SKirk McKusick long *tapesize, 3281c85e6a3SKirk McKusick int nodump) 3298fae3551SRodney W. Grimes { 3301c85e6a3SKirk McKusick int mode; 331d2334e27SIan Dowse struct direct *dp; 3321c85e6a3SKirk McKusick union dinode *ip; 333d2334e27SIan Dowse long loc, ret = 0; 3341c85e6a3SKirk McKusick static caddr_t dblk; 3358fae3551SRodney W. Grimes 3361c85e6a3SKirk McKusick if (dblk == NULL && (dblk = malloc(sblock->fs_bsize)) == NULL) 3371c85e6a3SKirk McKusick quit("searchdir: cannot allocate indirect memory.\n"); 3388fae3551SRodney W. Grimes bread(fsbtodb(sblock, blkno), dblk, (int)size); 3398fae3551SRodney W. Grimes if (filesize < size) 3408fae3551SRodney W. Grimes size = filesize; 3418fae3551SRodney W. Grimes for (loc = 0; loc < size; ) { 3428fae3551SRodney W. Grimes dp = (struct direct *)(dblk + loc); 3438fae3551SRodney W. Grimes if (dp->d_reclen == 0) { 3448fae3551SRodney W. Grimes msg("corrupted directory, inumber %d\n", ino); 3458fae3551SRodney W. Grimes break; 3468fae3551SRodney W. Grimes } 3478fae3551SRodney W. Grimes loc += dp->d_reclen; 3488fae3551SRodney W. Grimes if (dp->d_ino == 0) 3498fae3551SRodney W. Grimes continue; 3508fae3551SRodney W. Grimes if (dp->d_name[0] == '.') { 3518fae3551SRodney W. Grimes if (dp->d_name[1] == '\0') 3528fae3551SRodney W. Grimes continue; 3538fae3551SRodney W. Grimes if (dp->d_name[1] == '.' && dp->d_name[2] == '\0') 3548fae3551SRodney W. Grimes continue; 3558fae3551SRodney W. Grimes } 356801382faSDavid E. O'Brien if (nodump) { 3571c85e6a3SKirk McKusick ip = getino(dp->d_ino, &mode); 358801382faSDavid E. O'Brien if (TSTINO(dp->d_ino, dumpinomap)) { 359801382faSDavid E. O'Brien CLRINO(dp->d_ino, dumpinomap); 360801382faSDavid E. O'Brien *tapesize -= blockest(ip); 361801382faSDavid E. O'Brien } 36201629855SDavid E. O'Brien /* 36301629855SDavid E. O'Brien * Add back to dumpdirmap and remove from usedinomap 36401629855SDavid E. O'Brien * to propagate nodump. 36501629855SDavid E. O'Brien */ 3661c85e6a3SKirk McKusick if (mode == IFDIR) { 367801382faSDavid E. O'Brien SETINO(dp->d_ino, dumpdirmap); 36801629855SDavid E. O'Brien CLRINO(dp->d_ino, usedinomap); 369801382faSDavid E. O'Brien ret |= HASSUBDIRS; 370801382faSDavid E. O'Brien } 371801382faSDavid E. O'Brien } else { 3728fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpinomap)) { 3738fae3551SRodney W. Grimes ret |= HASDUMPEDFILE; 3748fae3551SRodney W. Grimes if (ret & HASSUBDIRS) 3758fae3551SRodney W. Grimes break; 3768fae3551SRodney W. Grimes } 3778fae3551SRodney W. Grimes if (TSTINO(dp->d_ino, dumpdirmap)) { 3788fae3551SRodney W. Grimes ret |= HASSUBDIRS; 3798fae3551SRodney W. Grimes if (ret & HASDUMPEDFILE) 3808fae3551SRodney W. Grimes break; 3818fae3551SRodney W. Grimes } 3828fae3551SRodney W. Grimes } 383801382faSDavid E. O'Brien } 3848fae3551SRodney W. Grimes return (ret); 3858fae3551SRodney W. Grimes } 3868fae3551SRodney W. Grimes 3878fae3551SRodney W. Grimes /* 3888fae3551SRodney W. Grimes * Dump passes 3 and 4. 3898fae3551SRodney W. Grimes * 3908fae3551SRodney W. Grimes * Dump the contents of an inode to tape. 3918fae3551SRodney W. Grimes */ 3928fae3551SRodney W. Grimes void 3931c85e6a3SKirk McKusick dumpino(union dinode *dp, ino_t ino) 3948fae3551SRodney W. Grimes { 3958fae3551SRodney W. Grimes int ind_level, cnt; 3961c85e6a3SKirk McKusick off_t size; 3978fae3551SRodney W. Grimes char buf[TP_BSIZE]; 3988fae3551SRodney W. Grimes 3998fae3551SRodney W. Grimes if (newtape) { 4008fae3551SRodney W. Grimes newtape = 0; 4018fae3551SRodney W. Grimes dumpmap(dumpinomap, TS_BITS, ino); 4028fae3551SRodney W. Grimes } 4038fae3551SRodney W. Grimes CLRINO(ino, dumpinomap); 4041c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) { 4051c85e6a3SKirk McKusick spcl.c_mode = dp->dp1.di_mode; 4061c85e6a3SKirk McKusick spcl.c_size = dp->dp1.di_size; 4071c85e6a3SKirk McKusick spcl.c_atime = _time32_to_time(dp->dp1.di_atime); 4081c85e6a3SKirk McKusick spcl.c_atimensec = dp->dp1.di_atimensec; 4091c85e6a3SKirk McKusick spcl.c_mtime = _time32_to_time(dp->dp1.di_mtime); 4101c85e6a3SKirk McKusick spcl.c_mtimensec = dp->dp1.di_mtimensec; 411fb36a3d8SKirk McKusick spcl.c_birthtime = 0; 412fb36a3d8SKirk McKusick spcl.c_birthtimensec = 0; 4131c85e6a3SKirk McKusick spcl.c_rdev = dp->dp1.di_rdev; 4141c85e6a3SKirk McKusick spcl.c_file_flags = dp->dp1.di_flags; 4151c85e6a3SKirk McKusick spcl.c_uid = dp->dp1.di_uid; 4161c85e6a3SKirk McKusick spcl.c_gid = dp->dp1.di_gid; 4171c85e6a3SKirk McKusick } else { 4181c85e6a3SKirk McKusick spcl.c_mode = dp->dp2.di_mode; 4191c85e6a3SKirk McKusick spcl.c_size = dp->dp2.di_size; 4201c85e6a3SKirk McKusick spcl.c_atime = _time64_to_time(dp->dp2.di_atime); 4211c85e6a3SKirk McKusick spcl.c_atimensec = dp->dp2.di_atimensec; 4221c85e6a3SKirk McKusick spcl.c_mtime = _time64_to_time(dp->dp2.di_mtime); 4231c85e6a3SKirk McKusick spcl.c_mtimensec = dp->dp2.di_mtimensec; 424fb36a3d8SKirk McKusick spcl.c_birthtime = _time64_to_time(dp->dp2.di_birthtime); 425fb36a3d8SKirk McKusick spcl.c_birthtimensec = dp->dp2.di_birthnsec; 4261c85e6a3SKirk McKusick spcl.c_rdev = dp->dp2.di_rdev; 4271c85e6a3SKirk McKusick spcl.c_file_flags = dp->dp2.di_flags; 4281c85e6a3SKirk McKusick spcl.c_uid = dp->dp2.di_uid; 4291c85e6a3SKirk McKusick spcl.c_gid = dp->dp2.di_gid; 4301c85e6a3SKirk McKusick } 4318fae3551SRodney W. Grimes spcl.c_type = TS_INODE; 4328fae3551SRodney W. Grimes spcl.c_count = 0; 4331c85e6a3SKirk McKusick switch (DIP(dp, di_mode) & S_IFMT) { 4348fae3551SRodney W. Grimes 4358fae3551SRodney W. Grimes case 0: 4368fae3551SRodney W. Grimes /* 4378fae3551SRodney W. Grimes * Freed inode. 4388fae3551SRodney W. Grimes */ 4398fae3551SRodney W. Grimes return; 4408fae3551SRodney W. Grimes 4418fae3551SRodney W. Grimes case S_IFLNK: 4428fae3551SRodney W. Grimes /* 4438fae3551SRodney W. Grimes * Check for short symbolic link. 4448fae3551SRodney W. Grimes */ 4458fae3551SRodney W. Grimes #ifdef FS_44INODEFMT 4461c85e6a3SKirk McKusick if (DIP(dp, di_size) > 0 && 4471c85e6a3SKirk McKusick DIP(dp, di_size) < sblock->fs_maxsymlinklen) { 4488fae3551SRodney W. Grimes spcl.c_addr[0] = 1; 4498fae3551SRodney W. Grimes spcl.c_count = 1; 4508fae3551SRodney W. Grimes writeheader(ino); 4511c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 4521c85e6a3SKirk McKusick memmove(buf, (caddr_t)dp->dp1.di_db, 4531c85e6a3SKirk McKusick (u_long)DIP(dp, di_size)); 4541c85e6a3SKirk McKusick else 4551c85e6a3SKirk McKusick memmove(buf, (caddr_t)dp->dp2.di_db, 4561c85e6a3SKirk McKusick (u_long)DIP(dp, di_size)); 4571c85e6a3SKirk McKusick buf[DIP(dp, di_size)] = '\0'; 4588fae3551SRodney W. Grimes writerec(buf, 0); 4598fae3551SRodney W. Grimes return; 4608fae3551SRodney W. Grimes } 4618fae3551SRodney W. Grimes #endif 4627fed38d0SPhilippe Charnier /* FALLTHROUGH */ 4638fae3551SRodney W. Grimes 4648fae3551SRodney W. Grimes case S_IFDIR: 4658fae3551SRodney W. Grimes case S_IFREG: 4661c85e6a3SKirk McKusick if (DIP(dp, di_size) > 0) 4678fae3551SRodney W. Grimes break; 4687fed38d0SPhilippe Charnier /* FALLTHROUGH */ 4698fae3551SRodney W. Grimes 4708fae3551SRodney W. Grimes case S_IFIFO: 4718fae3551SRodney W. Grimes case S_IFSOCK: 4728fae3551SRodney W. Grimes case S_IFCHR: 4738fae3551SRodney W. Grimes case S_IFBLK: 4748fae3551SRodney W. Grimes writeheader(ino); 4758fae3551SRodney W. Grimes return; 4768fae3551SRodney W. Grimes 4778fae3551SRodney W. Grimes default: 4781c85e6a3SKirk McKusick msg("Warning: undefined file type 0%o\n", 4791c85e6a3SKirk McKusick DIP(dp, di_mode) & IFMT); 4808fae3551SRodney W. Grimes return; 4818fae3551SRodney W. Grimes } 4821c85e6a3SKirk McKusick if (DIP(dp, di_size) > NDADDR * sblock->fs_bsize) 4838fae3551SRodney W. Grimes cnt = NDADDR * sblock->fs_frag; 4848fae3551SRodney W. Grimes else 4851c85e6a3SKirk McKusick cnt = howmany(DIP(dp, di_size), sblock->fs_fsize); 4861c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 4871c85e6a3SKirk McKusick ufs1_blksout(&dp->dp1.di_db[0], cnt, ino); 4881c85e6a3SKirk McKusick else 4891c85e6a3SKirk McKusick ufs2_blksout(&dp->dp2.di_db[0], cnt, ino); 4901c85e6a3SKirk McKusick if ((size = DIP(dp, di_size) - NDADDR * sblock->fs_bsize) <= 0) 4918fae3551SRodney W. Grimes return; 4928fae3551SRodney W. Grimes for (ind_level = 0; ind_level < NIADDR; ind_level++) { 4931c85e6a3SKirk McKusick dmpindir(ino, DIP(dp, di_ib[ind_level]), ind_level, &size); 4948fae3551SRodney W. Grimes if (size <= 0) 4958fae3551SRodney W. Grimes return; 4968fae3551SRodney W. Grimes } 4978fae3551SRodney W. Grimes } 4988fae3551SRodney W. Grimes 4998fae3551SRodney W. Grimes /* 5008fae3551SRodney W. Grimes * Read indirect blocks, and pass the data blocks to be dumped. 5018fae3551SRodney W. Grimes */ 5028fae3551SRodney W. Grimes static void 5031c85e6a3SKirk McKusick dmpindir(ino_t ino, ufs2_daddr_t blk, int ind_level, off_t *size) 5048fae3551SRodney W. Grimes { 5057680e41cSIan Dowse union { 5067680e41cSIan Dowse ufs1_daddr_t ufs1[MAXBSIZE / sizeof(ufs1_daddr_t)]; 5077680e41cSIan Dowse ufs2_daddr_t ufs2[MAXBSIZE / sizeof(ufs2_daddr_t)]; 5087680e41cSIan Dowse } idblk; 5098fae3551SRodney W. Grimes int i, cnt; 5108fae3551SRodney W. Grimes 5118fae3551SRodney W. Grimes if (blk != 0) 5127680e41cSIan Dowse bread(fsbtodb(sblock, blk), (char *)&idblk, 5137680e41cSIan Dowse (int)sblock->fs_bsize); 5148fae3551SRodney W. Grimes else 5157680e41cSIan Dowse memset(&idblk, 0, sblock->fs_bsize); 5168fae3551SRodney W. Grimes if (ind_level <= 0) { 5178fae3551SRodney W. Grimes if (*size < NINDIR(sblock) * sblock->fs_bsize) 5188fae3551SRodney W. Grimes cnt = howmany(*size, sblock->fs_fsize); 5198fae3551SRodney W. Grimes else 5208fae3551SRodney W. Grimes cnt = NINDIR(sblock) * sblock->fs_frag; 5218fae3551SRodney W. Grimes *size -= NINDIR(sblock) * sblock->fs_bsize; 5221c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5237680e41cSIan Dowse ufs1_blksout(idblk.ufs1, cnt, ino); 5241c85e6a3SKirk McKusick else 5257680e41cSIan Dowse ufs2_blksout(idblk.ufs2, cnt, ino); 5268fae3551SRodney W. Grimes return; 5278fae3551SRodney W. Grimes } 5288fae3551SRodney W. Grimes ind_level--; 5298fae3551SRodney W. Grimes for (i = 0; i < NINDIR(sblock); i++) { 5301c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) 5317680e41cSIan Dowse dmpindir(ino, idblk.ufs1[i], ind_level, size); 5321c85e6a3SKirk McKusick else 5337680e41cSIan Dowse dmpindir(ino, idblk.ufs2[i], ind_level, size); 5348fae3551SRodney W. Grimes if (*size <= 0) 5358fae3551SRodney W. Grimes return; 5368fae3551SRodney W. Grimes } 5378fae3551SRodney W. Grimes } 5388fae3551SRodney W. Grimes 5398fae3551SRodney W. Grimes /* 5408fae3551SRodney W. Grimes * Collect up the data into tape record sized buffers and output them. 5418fae3551SRodney W. Grimes */ 5428fae3551SRodney W. Grimes void 5431c85e6a3SKirk McKusick ufs1_blksout(ufs1_daddr_t *blkp, int frags, ino_t ino) 5448fae3551SRodney W. Grimes { 5451c85e6a3SKirk McKusick ufs1_daddr_t *bp; 5461c85e6a3SKirk McKusick int i, j, count, blks, tbperdb; 5471c85e6a3SKirk McKusick 5481c85e6a3SKirk McKusick blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 5491c85e6a3SKirk McKusick tbperdb = sblock->fs_bsize >> tp_bshift; 5501c85e6a3SKirk McKusick for (i = 0; i < blks; i += TP_NINDIR) { 5511c85e6a3SKirk McKusick if (i + TP_NINDIR > blks) 5521c85e6a3SKirk McKusick count = blks; 5531c85e6a3SKirk McKusick else 5541c85e6a3SKirk McKusick count = i + TP_NINDIR; 5551c85e6a3SKirk McKusick for (j = i; j < count; j++) 5561c85e6a3SKirk McKusick if (blkp[j / tbperdb] != 0) 5571c85e6a3SKirk McKusick spcl.c_addr[j - i] = 1; 5581c85e6a3SKirk McKusick else 5591c85e6a3SKirk McKusick spcl.c_addr[j - i] = 0; 5601c85e6a3SKirk McKusick spcl.c_count = count - i; 5611c85e6a3SKirk McKusick writeheader(ino); 5621c85e6a3SKirk McKusick bp = &blkp[i / tbperdb]; 5631c85e6a3SKirk McKusick for (j = i; j < count; j += tbperdb, bp++) 5641c85e6a3SKirk McKusick if (*bp != 0) { 5651c85e6a3SKirk McKusick if (j + tbperdb <= count) 5661c85e6a3SKirk McKusick dumpblock(*bp, (int)sblock->fs_bsize); 5671c85e6a3SKirk McKusick else 5681c85e6a3SKirk McKusick dumpblock(*bp, (count - j) * TP_BSIZE); 5691c85e6a3SKirk McKusick } 5701c85e6a3SKirk McKusick spcl.c_type = TS_ADDR; 5711c85e6a3SKirk McKusick } 5721c85e6a3SKirk McKusick } 5731c85e6a3SKirk McKusick 5741c85e6a3SKirk McKusick /* 5751c85e6a3SKirk McKusick * Collect up the data into tape record sized buffers and output them. 5761c85e6a3SKirk McKusick */ 5771c85e6a3SKirk McKusick void 5781c85e6a3SKirk McKusick ufs2_blksout(ufs2_daddr_t *blkp, int frags, ino_t ino) 5791c85e6a3SKirk McKusick { 5801c85e6a3SKirk McKusick ufs2_daddr_t *bp; 5818fae3551SRodney W. Grimes int i, j, count, blks, tbperdb; 5828fae3551SRodney W. Grimes 5838fae3551SRodney W. Grimes blks = howmany(frags * sblock->fs_fsize, TP_BSIZE); 5848fae3551SRodney W. Grimes tbperdb = sblock->fs_bsize >> tp_bshift; 5858fae3551SRodney W. Grimes for (i = 0; i < blks; i += TP_NINDIR) { 5868fae3551SRodney W. Grimes if (i + TP_NINDIR > blks) 5878fae3551SRodney W. Grimes count = blks; 5888fae3551SRodney W. Grimes else 5898fae3551SRodney W. Grimes count = i + TP_NINDIR; 5908fae3551SRodney W. Grimes for (j = i; j < count; j++) 5918fae3551SRodney W. Grimes if (blkp[j / tbperdb] != 0) 5928fae3551SRodney W. Grimes spcl.c_addr[j - i] = 1; 5938fae3551SRodney W. Grimes else 5948fae3551SRodney W. Grimes spcl.c_addr[j - i] = 0; 5958fae3551SRodney W. Grimes spcl.c_count = count - i; 5968fae3551SRodney W. Grimes writeheader(ino); 5978fae3551SRodney W. Grimes bp = &blkp[i / tbperdb]; 5988fae3551SRodney W. Grimes for (j = i; j < count; j += tbperdb, bp++) 59916c4e408SBill Fumerola if (*bp != 0) { 6008fae3551SRodney W. Grimes if (j + tbperdb <= count) 6018fae3551SRodney W. Grimes dumpblock(*bp, (int)sblock->fs_bsize); 6028fae3551SRodney W. Grimes else 6038fae3551SRodney W. Grimes dumpblock(*bp, (count - j) * TP_BSIZE); 60416c4e408SBill Fumerola } 6058fae3551SRodney W. Grimes spcl.c_type = TS_ADDR; 6068fae3551SRodney W. Grimes } 6078fae3551SRodney W. Grimes } 6088fae3551SRodney W. Grimes 6098fae3551SRodney W. Grimes /* 6108fae3551SRodney W. Grimes * Dump a map to the tape. 6118fae3551SRodney W. Grimes */ 6128fae3551SRodney W. Grimes void 6132db673abSWarner Losh dumpmap(char *map, int type, ino_t ino) 6148fae3551SRodney W. Grimes { 615d2334e27SIan Dowse int i; 6168fae3551SRodney W. Grimes char *cp; 6178fae3551SRodney W. Grimes 6188fae3551SRodney W. Grimes spcl.c_type = type; 6198fae3551SRodney W. Grimes spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE); 6208fae3551SRodney W. Grimes writeheader(ino); 6218fae3551SRodney W. Grimes for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE) 6228fae3551SRodney W. Grimes writerec(cp, 0); 6238fae3551SRodney W. Grimes } 6248fae3551SRodney W. Grimes 6258fae3551SRodney W. Grimes /* 6268fae3551SRodney W. Grimes * Write a header record to the dump tape. 6278fae3551SRodney W. Grimes */ 6288fae3551SRodney W. Grimes void 6292db673abSWarner Losh writeheader(ino_t ino) 6308fae3551SRodney W. Grimes { 631d2334e27SIan Dowse int32_t sum, cnt, *lp; 6328fae3551SRodney W. Grimes 6338fae3551SRodney W. Grimes spcl.c_inumber = ino; 6341c85e6a3SKirk McKusick spcl.c_magic = FS_UFS2_MAGIC; 6358fae3551SRodney W. Grimes spcl.c_checksum = 0; 63697b465b1SDima Ruban lp = (int32_t *)&spcl; 6378fae3551SRodney W. Grimes sum = 0; 63897b465b1SDima Ruban cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t)); 6398fae3551SRodney W. Grimes while (--cnt >= 0) { 6408fae3551SRodney W. Grimes sum += *lp++; 6418fae3551SRodney W. Grimes sum += *lp++; 6428fae3551SRodney W. Grimes sum += *lp++; 6438fae3551SRodney W. Grimes sum += *lp++; 6448fae3551SRodney W. Grimes } 6458fae3551SRodney W. Grimes spcl.c_checksum = CHECKSUM - sum; 6468fae3551SRodney W. Grimes writerec((char *)&spcl, 1); 6478fae3551SRodney W. Grimes } 6488fae3551SRodney W. Grimes 6491c85e6a3SKirk McKusick union dinode * 6501c85e6a3SKirk McKusick getino(ino_t inum, int *modep) 6518fae3551SRodney W. Grimes { 6521c85e6a3SKirk McKusick static ino_t minino, maxino; 6531c85e6a3SKirk McKusick static caddr_t inoblock; 6541c85e6a3SKirk McKusick struct ufs1_dinode *dp1; 6551c85e6a3SKirk McKusick struct ufs2_dinode *dp2; 6568fae3551SRodney W. Grimes 6571c85e6a3SKirk McKusick if (inoblock == NULL && (inoblock = malloc(sblock->fs_bsize)) == NULL) 6581c85e6a3SKirk McKusick quit("cannot allocate inode memory.\n"); 6598fae3551SRodney W. Grimes curino = inum; 6608fae3551SRodney W. Grimes if (inum >= minino && inum < maxino) 6611c85e6a3SKirk McKusick goto gotit; 6621c85e6a3SKirk McKusick bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), inoblock, 6638fae3551SRodney W. Grimes (int)sblock->fs_bsize); 6648fae3551SRodney W. Grimes minino = inum - (inum % INOPB(sblock)); 6658fae3551SRodney W. Grimes maxino = minino + INOPB(sblock); 6661c85e6a3SKirk McKusick gotit: 6671c85e6a3SKirk McKusick if (sblock->fs_magic == FS_UFS1_MAGIC) { 6681c85e6a3SKirk McKusick dp1 = &((struct ufs1_dinode *)inoblock)[inum - minino]; 6691c85e6a3SKirk McKusick *modep = (dp1->di_mode & IFMT); 6701c85e6a3SKirk McKusick return ((union dinode *)dp1); 6711c85e6a3SKirk McKusick } 6721c85e6a3SKirk McKusick dp2 = &((struct ufs2_dinode *)inoblock)[inum - minino]; 6731c85e6a3SKirk McKusick *modep = (dp2->di_mode & IFMT); 6741c85e6a3SKirk McKusick return ((union dinode *)dp2); 6758fae3551SRodney W. Grimes } 6768fae3551SRodney W. Grimes 6778fae3551SRodney W. Grimes /* 6788fae3551SRodney W. Grimes * Read a chunk of data from the disk. 6798fae3551SRodney W. Grimes * Try to recover from hard errors by reading in sector sized pieces. 6808fae3551SRodney W. Grimes * Error recovery is attempted at most BREADEMAX times before seeking 6818fae3551SRodney W. Grimes * consent from the operator to continue. 6828fae3551SRodney W. Grimes */ 6838fae3551SRodney W. Grimes int breaderrors = 0; 6848fae3551SRodney W. Grimes #define BREADEMAX 32 6858fae3551SRodney W. Grimes 6868fae3551SRodney W. Grimes void 6871c85e6a3SKirk McKusick bread(ufs2_daddr_t blkno, char *buf, int size) 6888fae3551SRodney W. Grimes { 6898fae3551SRodney W. Grimes int cnt, i; 6908fae3551SRodney W. Grimes 6918fae3551SRodney W. Grimes loop: 692be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, size, ((off_t)blkno << dev_bshift))) == 693be1bf707SMike Heffner size) 6948fae3551SRodney W. Grimes return; 6958fae3551SRodney W. Grimes if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) { 6968fae3551SRodney W. Grimes /* 6978fae3551SRodney W. Grimes * Trying to read the final fragment. 6988fae3551SRodney W. Grimes * 6998fae3551SRodney W. Grimes * NB - dump only works in TP_BSIZE blocks, hence 7008fae3551SRodney W. Grimes * rounds `dev_bsize' fragments up to TP_BSIZE pieces. 7018fae3551SRodney W. Grimes * It should be smarter about not actually trying to 7028fae3551SRodney W. Grimes * read more than it can get, but for the time being 7038fae3551SRodney W. Grimes * we punt and scale back the read only when it gets 7048fae3551SRodney W. Grimes * us into trouble. (mkm 9/25/83) 7058fae3551SRodney W. Grimes */ 7068fae3551SRodney W. Grimes size -= dev_bsize; 7078fae3551SRodney W. Grimes goto loop; 7088fae3551SRodney W. Grimes } 7098fae3551SRodney W. Grimes if (cnt == -1) 710617dbd3cSIan Dowse msg("read error from %s: %s: [block %jd]: count=%d\n", 711617dbd3cSIan Dowse disk, strerror(errno), (intmax_t)blkno, size); 7128fae3551SRodney W. Grimes else 713617dbd3cSIan Dowse msg("short read error from %s: [block %jd]: count=%d, got=%d\n", 714617dbd3cSIan Dowse disk, (intmax_t)blkno, size, cnt); 7158fae3551SRodney W. Grimes if (++breaderrors > BREADEMAX) { 716325167c3SIan Dowse msg("More than %d block read errors from %s\n", 7178fae3551SRodney W. Grimes BREADEMAX, disk); 7188fae3551SRodney W. Grimes broadcast("DUMP IS AILING!\n"); 7198fae3551SRodney W. Grimes msg("This is an unrecoverable error.\n"); 7208fae3551SRodney W. Grimes if (!query("Do you want to attempt to continue?")){ 7218fae3551SRodney W. Grimes dumpabort(0); 7228fae3551SRodney W. Grimes /*NOTREACHED*/ 7238fae3551SRodney W. Grimes } else 7248fae3551SRodney W. Grimes breaderrors = 0; 7258fae3551SRodney W. Grimes } 7268fae3551SRodney W. Grimes /* 7278fae3551SRodney W. Grimes * Zero buffer, then try to read each sector of buffer separately. 7288fae3551SRodney W. Grimes */ 729a37c38b8SPeter Wemm memset(buf, 0, size); 7308fae3551SRodney W. Grimes for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) { 731be1bf707SMike Heffner if ((cnt = pread(diskfd, buf, (int)dev_bsize, 732be1bf707SMike Heffner ((off_t)blkno << dev_bshift))) == dev_bsize) 7338fae3551SRodney W. Grimes continue; 7348fae3551SRodney W. Grimes if (cnt == -1) { 735617dbd3cSIan Dowse msg("read error from %s: %s: [sector %jd]: count=%ld\n", 736617dbd3cSIan Dowse disk, strerror(errno), (intmax_t)blkno, dev_bsize); 7378fae3551SRodney W. Grimes continue; 7388fae3551SRodney W. Grimes } 739617dbd3cSIan Dowse msg("short read from %s: [sector %jd]: count=%ld, got=%d\n", 740617dbd3cSIan Dowse disk, (intmax_t)blkno, dev_bsize, cnt); 7418fae3551SRodney W. Grimes } 7428fae3551SRodney W. Grimes } 743