2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@cybercable.fr>, 1999-2000
9 * Copyright (c) 1980, 1988, 1991, 1993
10 * The Regents of the University of California. All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 static const char rcsid[] =
43 "$Id: traverse.c,v 1.21 2000/11/10 13:52:43 stelian Exp $";
46 #include <sys/param.h>
49 #include <linux/ext2_fs.h>
50 #include <bsdcompat.h>
51 #include <compaterr.h>
53 #define swab32(x) ext2fs_swab32(x)
57 #include <sys/vnode.h>
60 #include <ufs/fsdir.h>
61 #include <ufs/inode.h>
63 #include <ufs/ufs/dir.h>
64 #include <ufs/ufs/dinode.h>
65 #include <ufs/ffs/fs.h>
67 #endif /* __linux__ */
69 #include <protocols/dumprestore.h>
79 #include <ext2fs/ext2fs.h>
84 #define HASDUMPEDFILE 0x1
85 #define HASSUBDIRS 0x2
88 typedef u_quad_t fsizeT;
91 typedef quad_t fsizeT;
98 static int searchdir __P((struct ext2_dir_entry *dp, int offset,
99 int blocksize, char *buf, void *private));
101 static int dirindir __P((ino_t ino, daddr_t blkno, int level, long *size));
102 static void dmpindir __P((ino_t ino, daddr_t blk, int level, fsizeT *size));
103 static int searchdir __P((ino_t ino, daddr_t blkno, long size, long filesize));
105 static void mapfileino __P((ino_t ino, long *tapesize, int *dirskipped));
106 static int exclude_ino __P((ino_t ino));
108 /* #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 */
109 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
110 #define FORCE_OPEN EXT2_FLAG_FORCE
115 int dump_fs_open(const char *disk, ext2_filsys *fs)
120 retval = ext2fs_open(disk, FORCE_OPEN, 0, 0, unix_io_manager, fs);
121 #if defined(EXT2_LIB_FEATURE_COMPAT_SUPP) && defined(EXT2_LIB_FEATURE_INCOMPAT_SUPP) && defined(EXT2_LIB_FEATURE_RO_COMPAT_SUPP) && defined(EXT2_ET_UNSUPP_FEATURE) && defined(EXT2_ET_RO_UNSUPP_FEATURE)
123 s = (struct ext2fs_sb *) (*fs)->super;
124 if ((s->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) ||
125 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
126 (s->s_feature_incompat & ~(EXT3_FEATURE_INCOMPAT_RECOVER | EXT2_LIB_FEATURE_INCOMPAT_SUPP))) {
128 (s->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) {
130 retval = EXT2_ET_UNSUPP_FEATURE;
132 else if (s->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
133 retval = EXT2_ET_RO_UNSUPP_FEATURE;
136 #endif /* defined && defined && defined... */
141 * This is an estimation of the number of TP_BSIZE blocks in the file.
142 * It estimates the number of blocks in files with holes by assuming
143 * that all of the blocks accounted for by di_blocks are data blocks
144 * (when some of the blocks are usually used for indirect pointers);
145 * hence the estimate may be high.
148 blockest(struct dinode *dp)
150 long blkest, sizeest;
153 * dp->di_size is the size of the file in bytes.
154 * dp->di_blocks stores the number of sectors actually in the file.
155 * If there are more sectors than the size would indicate, this just
156 * means that there are indirect blocks in the file or unused
157 * sectors in the last file block; we can safely ignore these
158 * (blkest = sizeest below).
159 * If the file is bigger than the number of sectors would indicate,
160 * then the file has holes in it. In this case we must use the
161 * block count to estimate the number of data blocks used, but
162 * we use the actual size for estimating the number of indirect
163 * dump blocks (sizeest vs. blkest in the indirect block
166 blkest = howmany(dbtob(dp->di_blocks), TP_BSIZE);
167 sizeest = howmany(dp->di_size, TP_BSIZE);
168 if (blkest > sizeest)
171 if (dp->di_size > fs->blocksize * NDADDR) {
172 /* calculate the number of indirect blocks on the dump tape */
174 howmany(sizeest - NDADDR * fs->blocksize / TP_BSIZE,
175 NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super));
178 if (dp->di_size > sblock->fs_bsize * NDADDR) {
179 /* calculate the number of indirect blocks on the dump tape */
181 howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE,
188 extern ino_t iexclude_list[IEXCLUDE_MAXNUM]; /* the inode exclude list */
189 extern int iexclude_num; /* number of elements in the list */
192 * This tests whether an inode is in the exclude list
195 exclude_ino(ino_t ino)
198 if (iexclude_num) { /* if there are inodes in the exclude list */
199 int idx; /* then check this inode against it */
200 for (idx = 0; idx < iexclude_num; idx++)
201 if (ino == iexclude_list[idx])
207 /* Auxiliary macro to pick up files changed since previous dump. */
208 #define CHANGEDSINCE(dp, t) \
209 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
211 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
213 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
215 #define NODUMP_FLAG(dp) 0
218 /* The WANTTODUMP macro decides whether a file should be dumped. */
219 #define WANTTODUMP(dp, ino) \
220 (CHANGEDSINCE(dp, spcl.c_ddate) && \
221 (!NODUMP_FLAG(dp)) && \
225 * Determine if given inode should be dumped
228 mapfileino(ino_t ino, long *tapesize, int *dirskipped)
231 register struct dinode *dp;
234 * Skip inode if we've already marked it for dumping
236 if (TSTINO(ino, usedinomap))
239 if ((mode = (dp->di_mode & IFMT)) == 0)
242 if (dp->di_nlink == 0 || dp->di_dtime != 0)
246 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
247 * used map. All inode but dirs who have the nodump attribute go
250 SETINO(ino, usedinomap);
253 SETINO(ino, dumpdirmap);
254 if (WANTTODUMP(dp, ino)) {
255 SETINO(ino, dumpinomap);
256 if (mode != IFREG && mode != IFDIR && mode != IFLNK)
259 *tapesize += blockest(dp);
263 if ( NODUMP_FLAG(dp) || exclude_ino(ino) )
264 CLRINO(ino, usedinomap);
272 * Walk the inode list for a filesystem to find all allocated inodes
273 * that have been modified since the previous dump time. Also, find all
274 * the directories in the filesystem.
277 mapfiles(ino_t maxino, long *tapesize)
280 int anydirskipped = 0;
282 for (ino = ROOTINO; ino < maxino; ino++)
283 mapfileino(ino, tapesize, &anydirskipped);
286 * Restore gets very upset if the root is not dumped,
287 * so ensure that it always is dumped.
289 SETINO(ROOTINO, dumpinomap);
290 return (anydirskipped);
294 struct mapfile_context {
300 mapfilesindir(struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *private)
302 register struct dinode *dp;
305 struct mapfile_context *mfc;
309 mfc = (struct mapfile_context *)private;
311 mapfileino(dirent->inode, mfc->tapesize, mfc->anydirskipped);
313 dp = getino(dirent->inode);
314 mode = dp->di_mode & IFMT;
315 if (mode == IFDIR && dp->di_nlink != 0 && dp->di_dtime == 0) {
316 if ((dirent->name[0] != '.' || ( dirent->name_len & 0xFF ) != 1) &&
317 (dirent->name[0] != '.' || dirent->name[1] != '.' ||
318 ( dirent->name_len & 0xFF ) != 2)) {
319 retval = ext2fs_dir_iterate(fs, ino, 0, NULL,
320 mapfilesindir, private);
331 * Walk the inode list for a filesystem to find all allocated inodes
332 * that have been modified since the previous dump time. Also, find all
333 * the directories in the filesystem.
336 mapfilesfromdir(ino_t maxino, long *tapesize, char *directory)
339 struct mapfile_context mfc;
341 char dir_name [MAXPATHLEN];
342 int i, anydirskipped = 0;
345 * Mark every directory in the path as being dumped
347 for (i = 0; i < strlen (directory); i++) {
348 if (directory[i] == '/') {
349 strncpy (dir_name, directory, i);
351 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, dir_name,
354 com_err(disk, retval, "while translating %s",
358 mapfileino(dir_ino, tapesize, &anydirskipped);
362 * Mark the final directory
364 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, directory, &dir_ino);
366 com_err(disk, retval, "while translating %s", directory);
369 mapfileino(dir_ino, tapesize, &anydirskipped);
371 mfc.tapesize = tapesize;
372 mfc.anydirskipped = &anydirskipped;
373 retval = ext2fs_dir_iterate(fs, dir_ino, 0, NULL, mapfilesindir,
377 com_err(disk, retval, "while mapping files in %s", directory);
381 * Ensure that the root inode actually appears in the file list
384 mapfileino(ROOTINO, tapesize, &anydirskipped);
386 * Restore gets very upset if the root is not dumped,
387 * so ensure that it always is dumped.
389 SETINO(ROOTINO, dumpinomap);
390 return anydirskipped;
395 struct mapdirs_context {
405 * Scan each directory on the filesystem to see if it has any modified
406 * files in it. If it does, and has not already been added to the dump
407 * list (because it was itself modified), then add it. If a directory
408 * has not been modified itself, contains no modified files and has no
409 * subdirectories, then it can be deleted from the dump list and from
410 * the list of directories. By deleting it from the list of directories,
411 * its parent may now qualify for the same treatment on this or a later
412 * pass using this algorithm.
415 mapdirs(ino_t maxino, long *tapesize)
417 register struct dinode *dp;
425 struct mapdirs_context mdc;
427 int ret, change = 0, nodump;
429 isdir = 0; /* XXX just to get gcc to shut up */
430 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
431 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
436 * If dir has been removed from the used map, it's either
437 * because it had the nodump flag, or it herited it from
438 * its parent. A directory can't be in dumpinomap if not
439 * in usedinomap, but we have to go through it anyway
440 * to propagate the nodump attribute.
442 nodump = (TSTINO(ino, usedinomap) == 0);
443 if ((isdir & 1) == 0 ||
444 (TSTINO(ino, dumpinomap) && nodump == 0))
451 mdc.tapesize = tapesize;
452 ext2fs_dir_iterate(fs, ino, 0, NULL, searchdir, (void *) &mdc);
453 #else /* __linux__ */
454 filesize = dp->di_size;
455 for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) {
456 if (dp->di_db[i] != 0)
457 ret |= searchdir(ino, dp->di_db[i],
458 (long)dblksize(sblock, dp, i),
460 if (ret & HASDUMPEDFILE)
463 filesize -= sblock->fs_bsize;
465 for (i = 0; filesize > 0 && i < NIADDR; i++) {
466 if (dp->di_ib[i] == 0)
468 ret |= dirindir(ino, dp->di_ib[i], i, &filesize);
470 #endif /* __linux__ */
471 if (ret & HASDUMPEDFILE) {
472 SETINO(ino, dumpinomap);
473 *tapesize += blockest(dp);
478 if (ret & HASSUBDIRS)
479 change = 1; /* subdirs have inherited nodump */
480 CLRINO(ino, dumpdirmap);
481 } else if ((ret & HASSUBDIRS) == 0) {
482 if (!TSTINO(ino, dumpinomap)) {
483 CLRINO(ino, dumpdirmap);
493 * Read indirect blocks, and pass the data blocks to be searched
494 * as directories. Quit as soon as any entry is found that will
495 * require the directory to be dumped.
498 dirindir(ino_t ino, daddr_t blkno, int ind_level, long *filesize)
502 daddr_t idblk[MAXNINDIR];
504 bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize);
505 if (ind_level <= 0) {
506 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
509 ret |= searchdir(ino, blkno, sblock->fs_bsize,
511 if (ret & HASDUMPEDFILE)
514 *filesize -= sblock->fs_bsize;
519 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
522 ret |= dirindir(ino, blkno, ind_level, filesize);
526 #endif /* !__linux__ */
529 * Scan a disk block containing directory information looking to see if
530 * any of the entries are on the dump list and to see if the directory
531 * contains any subdirectories.
535 searchdir(struct ext2_dir_entry *dp, int offset, int blocksize, char *buf, void *private)
537 struct mapdirs_context *mdc;
542 mdc = (struct mapdirs_context *)private;
544 tapesize = mdc->tapesize;
548 if (dp->name[0] == '.') {
549 if (( dp->name_len & 0xFF ) == 1)
551 if (dp->name[1] == '.' && ( dp->name_len & 0xFF ) == 2)
555 ip = getino(dp->inode);
556 if (TSTINO(dp->inode, dumpinomap)) {
557 CLRINO(dp->inode, dumpinomap);
558 CLRINO(dp->inode, usedinomap);
559 *tapesize -= blockest(ip);
561 /* Add dir back to the dir map, to propagate nodump */
562 if ((ip->di_mode & IFMT) == IFDIR) {
563 SETINO(dp->inode, dumpdirmap);
567 if (TSTINO(dp->inode, dumpinomap)) {
568 *ret |= HASDUMPEDFILE;
569 if (*ret & HASSUBDIRS)
572 if (TSTINO(dp->inode, dumpdirmap)) {
574 if (*ret & HASDUMPEDFILE)
581 #else /* __linux__ */
584 searchdir(ino_t ino, daddr_t blkno, long size, long filesize)
586 register struct direct *dp;
587 register long loc, ret = 0;
590 bread(fsbtodb(sblock, blkno), dblk, (int)size);
593 for (loc = 0; loc < size; ) {
594 dp = (struct direct *)(dblk + loc);
595 if (dp->d_reclen == 0) {
596 msg("corrupted directory, inumber %d\n", ino);
602 if (dp->d_name[0] == '.') {
603 if (dp->d_name[1] == '\0')
605 if (dp->d_name[1] == '.' && dp->d_name[2] == '\0')
608 if (TSTINO(dp->d_ino, dumpinomap)) {
609 ret |= HASDUMPEDFILE;
610 if (ret & HASSUBDIRS)
613 if (TSTINO(dp->d_ino, dumpdirmap)) {
615 if (ret & HASDUMPEDFILE)
621 #endif /* __linux__ */
625 struct block_context {
634 * Dump a block to the tape
637 dumponeblock(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *private)
639 struct block_context *p;
642 if (blockcnt < NDADDR)
644 p = (struct block_context *)private;
645 for (i = p->next_block; i < blockcnt; i++) {
646 p->buf[p->cnt++] = 0;
647 if (p->cnt == p->max) {
648 blksout (p->buf, p->cnt, p->ino);
652 p->buf[p->cnt++] = *blocknr;
653 if (p->cnt == p->max) {
654 blksout (p->buf, p->cnt, p->ino);
657 p->next_block = blockcnt + 1;
663 * Dump passes 3 and 4.
665 * Dump the contents of an inode to tape.
668 dumpino(struct dinode *dp, ino_t ino)
673 struct old_bsd_inode obi;
675 struct block_context bc;
682 dumpmap(dumpinomap, TS_BITS, ino);
684 CLRINO(ino, dumpinomap);
686 memset(&obi, 0, sizeof(obi));
687 obi.di_mode = dp->di_mode;
688 obi.di_uid = dp->di_uid;
689 obi.di_gid = dp->di_gid;
690 obi.di_qsize.v = (u_quad_t)dp->di_size;
691 obi.di_atime = dp->di_atime;
692 obi.di_mtime = dp->di_mtime;
693 obi.di_ctime = dp->di_ctime;
694 obi.di_nlink = dp->di_nlink;
695 obi.di_blocks = dp->di_blocks;
696 obi.di_flags = dp->di_flags;
697 obi.di_gen = dp->di_gen;
698 memmove(&obi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
699 if (dp->di_file_acl || dp->di_dir_acl)
700 warn("ACLs in inode #%ld won't be dumped", (long)ino);
701 memmove(&spcl.c_dinode, &obi, sizeof(obi));
702 #else /* __linux__ */
704 #endif /* __linux__ */
705 spcl.c_type = TS_INODE;
707 switch (dp->di_mode & S_IFMT) {
717 msg("Warning: dumpino called on a directory (ino %d)\n", ino);
723 * Check for short symbolic link.
726 if (dp->di_size > 0 &&
727 dp->di_size < EXT2_N_BLOCKS * sizeof (daddr_t)) {
731 memmove(buf, dp->di_db, (u_long)dp->di_size);
732 buf[dp->di_size] = '\0';
736 #endif /* __linux__ */
738 if (dp->di_size > 0 &&
739 dp->di_size < sblock->fs_maxsymlinklen) {
743 memmove(buf, dp->di_shortlink, (u_long)dp->di_size);
744 buf[dp->di_size] = '\0';
767 msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT);
770 if (dp->di_size > NDADDR * sblock->fs_bsize)
772 cnt = NDADDR * EXT2_FRAGS_PER_BLOCK(fs->super);
774 cnt = NDADDR * sblock->fs_frag;
777 cnt = howmany(dp->di_size, sblock->fs_fsize);
778 blksout(&dp->di_db[0], cnt, ino);
779 if ((size = dp->di_size - NDADDR * sblock->fs_bsize) <= 0)
782 bc.max = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
783 bc.buf = (int *)malloc (bc.max * sizeof (int));
786 bc.next_block = NDADDR;
788 ext2fs_block_iterate (fs, ino, 0, NULL, dumponeblock, (void *)&bc);
790 blksout (bc.buf, bc.cnt, bc.ino);
794 for (ind_level = 0; ind_level < NIADDR; ind_level++) {
795 dmpindir(ino, dp->di_ib[ind_level], ind_level, &size);
804 struct convert_dir_context {
812 * This function converts an ext2fs directory entry to the BSD format.
814 * Basically, it adds a null-character at the end of the name, recomputes the
815 * size of the entry, and creates it in a temporary buffer
818 convert_dir(struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *private)
820 struct convert_dir_context *p;
821 struct olddirect *dp;
824 p = (struct convert_dir_context *)private;
826 reclen = EXT2_DIR_REC_LEN((dirent->name_len & 0xFF) + 1);
827 if (((p->offset + reclen - 1) / p->bs) != (p->offset / p->bs)) {
828 dp = (struct olddirect *)(p->buf + p->prev_offset);
829 dp->d_reclen += p->bs - (p->offset % p->bs);
830 p->offset += p->bs - (p->offset % p->bs);
833 dp = (struct olddirect *)(p->buf + p->offset);
834 dp->d_ino = dirent->inode;
835 dp->d_reclen = reclen;
836 dp->d_namlen = dirent->name_len & 0xFF;
837 strncpy(dp->d_name, dirent->name, dp->d_namlen);
838 dp->d_name[dp->d_namlen] = '\0';
839 p->prev_offset = p->offset;
848 * Dumps a directory to tape after converting it to the BSD format
851 dumpdirino(struct dinode *dp, ino_t ino)
855 struct old_bsd_inode obi;
856 struct convert_dir_context cdc;
858 struct ext2_dir_entry *de;
863 dumpmap(dumpinomap, TS_BITS, ino);
865 CLRINO(ino, dumpinomap);
868 * Convert the directory to the BSD format
870 /* Allocate a buffer for the conversion (twice the size of the
871 ext2fs directory to avoid problems ;-) */
872 cdc.buf = (char *)malloc(dp->di_size * 2 * sizeof(char));
874 err(1, "Cannot allocate buffer to convert directory #%lu\n",
878 cdc.bs = MIN(DIRBLKSIZ, TP_BSIZE);
879 /* Do the conversion */
880 retval = ext2fs_dir_iterate(fs, ino, 0, NULL, convert_dir, (void *)&cdc);
882 com_err(disk, retval, "while converting directory #%ld\n", (long)ino);
885 /* Fix the last entry */
886 if ((cdc.offset % cdc.bs) != 0) {
887 de = (struct ext2_dir_entry *)(cdc.buf + cdc.prev_offset);
888 de->rec_len += cdc.bs - (cdc.offset % cdc.bs);
889 cdc.offset += cdc.bs - (cdc.offset % cdc.bs);
892 dir_size = cdc.offset;
895 memset(&obi, 0, sizeof(obi));
896 obi.di_mode = dp->di_mode;
897 obi.di_uid = dp->di_uid;
898 obi.di_gid = dp->di_gid;
899 obi.di_qsize.v = dir_size; /* (u_quad_t)dp->di_size; */
900 obi.di_atime = dp->di_atime;
901 obi.di_mtime = dp->di_mtime;
902 obi.di_ctime = dp->di_ctime;
903 obi.di_nlink = dp->di_nlink;
904 obi.di_blocks = dp->di_blocks;
905 obi.di_flags = dp->di_flags;
906 obi.di_gen = dp->di_gen;
907 memmove(&obi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
908 if (dp->di_file_acl || dp->di_dir_acl)
909 warn("ACLs in inode #%ld won't be dumped", (long)ino);
910 memmove(&spcl.c_dinode, &obi, sizeof(obi));
911 #else /* __linux__ */
913 #endif /* __linux__ */
914 spcl.c_type = TS_INODE;
916 switch (dp->di_mode & S_IFMT) {
927 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
932 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
933 dp->di_mode & IFMT, ino);
936 for (size = 0; size < dir_size; size += TP_BSIZE) {
940 memmove(buf, cdc.buf + size, TP_BSIZE);
942 spcl.c_type = TS_ADDR;
947 #endif /* __linux__ */
951 * Read indirect blocks, and pass the data blocks to be dumped.
954 dmpindir(ino_t ino, daddr_t blk, int ind_level, fsizeT *size)
961 daddr_t idblk[MAXNINDIR];
964 bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize);
967 * My RedHat 4.0 system doesn't have these flags; I haven't
968 * upgraded e2fsprogs yet
970 #if defined(EXT2_FLAG_SWAP_BYTES)
971 if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
972 (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)) {
974 max = sblock->fs_bsize >> 2;
975 swapme = (blk_t *) idblk;
976 for (i = 0; i < max; i++, swapme++)
977 *swapme = swab32(*swapme);
978 #if defined(EXT2_FLAG_SWAP_BYTES)
983 memset(idblk, 0, (int)sblock->fs_bsize);
984 if (ind_level <= 0) {
985 if (*size < NINDIR(sblock) * sblock->fs_bsize)
986 cnt = howmany(*size, sblock->fs_fsize);
989 cnt = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
991 cnt = NINDIR(sblock) * sblock->fs_frag;
993 *size -= NINDIR(sblock) * sblock->fs_bsize;
994 blksout(&idblk[0], cnt, ino);
998 for (i = 0; i < NINDIR(sblock); i++) {
999 dmpindir(ino, idblk[i], ind_level, size);
1007 * Collect up the data into tape record sized buffers and output them.
1010 blksout(daddr_t *blkp, int frags, ino_t ino)
1012 register daddr_t *bp;
1013 int i, j, count, blks, tbperdb;
1015 blks = howmany(frags * sblock->fs_fsize, TP_BSIZE);
1016 tbperdb = sblock->fs_bsize >> tp_bshift;
1017 for (i = 0; i < blks; i += TP_NINDIR) {
1018 if (i + TP_NINDIR > blks)
1021 count = i + TP_NINDIR;
1022 for (j = i; j < count; j++)
1023 if (blkp[j / tbperdb] != 0)
1024 spcl.c_addr[j - i] = 1;
1026 spcl.c_addr[j - i] = 0;
1027 spcl.c_count = count - i;
1029 bp = &blkp[i / tbperdb];
1030 for (j = i; j < count; j += tbperdb, bp++) {
1032 if (j + tbperdb <= count)
1033 dumpblock(*bp, (int)sblock->fs_bsize);
1035 dumpblock(*bp, (count - j) * TP_BSIZE);
1038 spcl.c_type = TS_ADDR;
1043 * Dump a map to the tape.
1046 dumpmap(char *map, int type, ino_t ino)
1052 spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE);
1054 for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE)
1059 * Write a header record to the dump tape.
1062 writeheader(ino_t ino)
1065 register __s32 sum, cnt, *lp;
1067 register int32_t sum, cnt, *lp;
1070 spcl.c_inumber = ino;
1071 spcl.c_magic = NFS_MAGIC;
1072 spcl.c_checksum = 0;
1074 lp = (__s32 *)&spcl;
1076 lp = (int32_t *)&spcl;
1080 cnt = sizeof(union u_spcl) / (4 * sizeof(__s32));
1082 cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t));
1084 while (--cnt >= 0) {
1090 spcl.c_checksum = CHECKSUM - sum;
1091 writerec((char *)&spcl, 1);
1098 static struct dinode dinode;
1101 ext2fs_read_inode(fs, inum, (struct ext2_inode *) &dinode);
1104 #else /* __linux__ */
1108 static daddr_t minino, maxino;
1109 static struct dinode inoblock[MAXINOPB];
1112 if (inum >= minino && inum < maxino)
1113 return (&inoblock[inum - minino]);
1114 bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock,
1115 (int)sblock->fs_bsize);
1116 minino = inum - (inum % INOPB(sblock));
1117 maxino = minino + INOPB(sblock);
1118 return (&inoblock[inum - minino]);
1120 #endif /* __linux__ */
1123 * Read a chunk of data from the disk.
1124 * Try to recover from hard errors by reading in sector sized pieces.
1125 * Error recovery is attempted at most BREADEMAX times before seeking
1126 * consent from the operator to continue.
1128 int breaderrors = 0;
1129 #define BREADEMAX 32
1132 bread(daddr_t blkno, char *buf, int size)
1139 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1140 (((ext2_loff_t)blkno) << dev_bshift))
1142 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1143 ((off_t)blkno << dev_bshift))
1145 msg("bread: lseek fails\n");
1146 if ((cnt = read(diskfd, buf, size)) == size)
1148 if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) {
1150 * Trying to read the final fragment.
1152 * NB - dump only works in TP_BSIZE blocks, hence
1153 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1154 * It should be smarter about not actually trying to
1155 * read more than it can get, but for the time being
1156 * we punt and scale back the read only when it gets
1157 * us into trouble. (mkm 9/25/83)
1163 msg("read error from %s: %s: [block %d]: count=%d\n",
1164 disk, strerror(errno), blkno, size);
1166 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1167 disk, blkno, size, cnt);
1168 if (++breaderrors > BREADEMAX) {
1169 msg("More than %d block read errors from %d\n",
1171 broadcast("DUMP IS AILING!\n");
1172 msg("This is an unrecoverable error.\n");
1173 if (!query("Do you want to attempt to continue?")){
1180 * Zero buffer, then try to read each sector of buffer separately.
1182 memset(buf, 0, size);
1183 for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) {
1185 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1186 (((ext2_loff_t)blkno) << dev_bshift))
1188 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1189 ((off_t)blkno << dev_bshift))
1191 msg("bread: lseek2 fails!\n");
1192 if ((cnt = read(diskfd, buf, (int)dev_bsize)) == dev_bsize)
1195 msg("read error from %s: %s: [sector %d]: count=%d\n",
1196 disk, strerror(errno), blkno, dev_bsize);
1199 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1200 disk, blkno, dev_bsize, cnt);