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@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
10 * Copyright (c) 1980, 1988, 1991, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid[] =
44 "$Id: traverse.c,v 1.23 2000/12/04 15:43:16 stelian Exp $";
47 #include <sys/param.h>
50 #include <linux/ext2_fs.h>
51 #include <bsdcompat.h>
52 #include <compaterr.h>
54 #define swab32(x) ext2fs_swab32(x)
58 #include <sys/vnode.h>
61 #include <ufs/fsdir.h>
62 #include <ufs/inode.h>
64 #include <ufs/ufs/dir.h>
65 #include <ufs/ufs/dinode.h>
66 #include <ufs/ffs/fs.h>
68 #endif /* __linux__ */
70 #include <protocols/dumprestore.h>
80 #include <ext2fs/ext2fs.h>
85 #define HASDUMPEDFILE 0x1
86 #define HASSUBDIRS 0x2
89 typedef u_quad_t fsizeT;
92 typedef quad_t fsizeT;
99 static int searchdir __P((struct ext2_dir_entry *dp, int offset,
100 int blocksize, char *buf, void *private));
102 static int dirindir __P((ino_t ino, daddr_t blkno, int level, long *size));
103 static void dmpindir __P((ino_t ino, daddr_t blk, int level, fsizeT *size));
104 static int searchdir __P((ino_t ino, daddr_t blkno, long size, long filesize));
106 static void mapfileino __P((ino_t ino, long *tapesize, int *dirskipped));
107 static int exclude_ino __P((ino_t ino));
109 /* #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 */
110 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
111 #define FORCE_OPEN EXT2_FLAG_FORCE
116 int dump_fs_open(const char *disk, ext2_filsys *fs)
121 retval = ext2fs_open(disk, FORCE_OPEN, 0, 0, unix_io_manager, fs);
122 #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)
124 s = (struct ext2fs_sb *) (*fs)->super;
125 if ((s->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) ||
126 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
127 (s->s_feature_incompat & ~(EXT3_FEATURE_INCOMPAT_RECOVER | EXT2_LIB_FEATURE_INCOMPAT_SUPP))) {
129 (s->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) {
131 retval = EXT2_ET_UNSUPP_FEATURE;
133 else if (s->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
134 retval = EXT2_ET_RO_UNSUPP_FEATURE;
137 #endif /* defined && defined && defined... */
142 * This is an estimation of the number of TP_BSIZE blocks in the file.
143 * It estimates the number of blocks in files with holes by assuming
144 * that all of the blocks accounted for by di_blocks are data blocks
145 * (when some of the blocks are usually used for indirect pointers);
146 * hence the estimate may be high.
149 blockest(struct dinode *dp)
151 long blkest, sizeest;
154 * dp->di_size is the size of the file in bytes.
155 * dp->di_blocks stores the number of sectors actually in the file.
156 * If there are more sectors than the size would indicate, this just
157 * means that there are indirect blocks in the file or unused
158 * sectors in the last file block; we can safely ignore these
159 * (blkest = sizeest below).
160 * If the file is bigger than the number of sectors would indicate,
161 * then the file has holes in it. In this case we must use the
162 * block count to estimate the number of data blocks used, but
163 * we use the actual size for estimating the number of indirect
164 * dump blocks (sizeest vs. blkest in the indirect block
167 blkest = howmany(dbtob(dp->di_blocks), TP_BSIZE);
168 sizeest = howmany(dp->di_size, TP_BSIZE);
169 if (blkest > sizeest)
172 if (dp->di_size > fs->blocksize * NDADDR) {
173 /* calculate the number of indirect blocks on the dump tape */
175 howmany(sizeest - NDADDR * fs->blocksize / TP_BSIZE,
176 NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super));
179 if (dp->di_size > sblock->fs_bsize * NDADDR) {
180 /* calculate the number of indirect blocks on the dump tape */
182 howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE,
189 extern ino_t iexclude_list[IEXCLUDE_MAXNUM]; /* the inode exclude list */
190 extern int iexclude_num; /* number of elements in the list */
193 * This tests whether an inode is in the exclude list
196 exclude_ino(ino_t ino)
199 if (iexclude_num) { /* if there are inodes in the exclude list */
200 int idx; /* then check this inode against it */
201 for (idx = 0; idx < iexclude_num; idx++)
202 if (ino == iexclude_list[idx])
208 /* Auxiliary macro to pick up files changed since previous dump. */
209 #define CHANGEDSINCE(dp, t) \
210 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
212 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
214 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
216 #define NODUMP_FLAG(dp) 0
219 /* The WANTTODUMP macro decides whether a file should be dumped. */
220 #define WANTTODUMP(dp, ino) \
221 (CHANGEDSINCE(dp, spcl.c_ddate) && \
222 (!NODUMP_FLAG(dp)) && \
226 * Determine if given inode should be dumped
229 mapfileino(ino_t ino, long *tapesize, int *dirskipped)
232 register struct dinode *dp;
235 * Skip inode if we've already marked it for dumping
237 if (TSTINO(ino, usedinomap))
240 if ((mode = (dp->di_mode & IFMT)) == 0)
243 if (dp->di_nlink == 0 || dp->di_dtime != 0)
247 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
248 * used map. All inode but dirs who have the nodump attribute go
251 SETINO(ino, usedinomap);
254 SETINO(ino, dumpdirmap);
255 if (WANTTODUMP(dp, ino)) {
256 SETINO(ino, dumpinomap);
257 if (mode != IFREG && mode != IFDIR && mode != IFLNK)
260 *tapesize += blockest(dp);
264 if ( NODUMP_FLAG(dp) || exclude_ino(ino) )
265 CLRINO(ino, usedinomap);
273 * Walk the inode list for a filesystem to find all allocated inodes
274 * that have been modified since the previous dump time. Also, find all
275 * the directories in the filesystem.
278 mapfiles(ino_t maxino, long *tapesize)
281 int anydirskipped = 0;
283 for (ino = ROOTINO; ino < maxino; ino++)
284 mapfileino(ino, tapesize, &anydirskipped);
287 * Restore gets very upset if the root is not dumped,
288 * so ensure that it always is dumped.
290 SETINO(ROOTINO, dumpinomap);
291 return (anydirskipped);
295 struct mapfile_context {
301 mapfilesindir(struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *private)
303 register struct dinode *dp;
306 struct mapfile_context *mfc;
310 mfc = (struct mapfile_context *)private;
312 mapfileino(dirent->inode, mfc->tapesize, mfc->anydirskipped);
314 dp = getino(dirent->inode);
315 mode = dp->di_mode & IFMT;
316 if (mode == IFDIR && dp->di_nlink != 0 && dp->di_dtime == 0) {
317 if ((dirent->name[0] != '.' || ( dirent->name_len & 0xFF ) != 1) &&
318 (dirent->name[0] != '.' || dirent->name[1] != '.' ||
319 ( dirent->name_len & 0xFF ) != 2)) {
320 retval = ext2fs_dir_iterate(fs, ino, 0, NULL,
321 mapfilesindir, private);
332 * Walk the inode list for a filesystem to find all allocated inodes
333 * that have been modified since the previous dump time. Also, find all
334 * the directories in the filesystem.
337 mapfilesfromdir(ino_t maxino, long *tapesize, char *directory)
340 struct mapfile_context mfc;
342 char dir_name [MAXPATHLEN];
343 int i, anydirskipped = 0;
346 * Mark every directory in the path as being dumped
348 for (i = 0; i < strlen (directory); i++) {
349 if (directory[i] == '/') {
350 strncpy (dir_name, directory, i);
352 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, dir_name,
355 com_err(disk, retval, "while translating %s",
359 mapfileino(dir_ino, tapesize, &anydirskipped);
363 * Mark the final directory
365 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, directory, &dir_ino);
367 com_err(disk, retval, "while translating %s", directory);
370 mapfileino(dir_ino, tapesize, &anydirskipped);
372 mfc.tapesize = tapesize;
373 mfc.anydirskipped = &anydirskipped;
374 retval = ext2fs_dir_iterate(fs, dir_ino, 0, NULL, mapfilesindir,
378 com_err(disk, retval, "while mapping files in %s", directory);
382 * Ensure that the root inode actually appears in the file list
385 mapfileino(ROOTINO, tapesize, &anydirskipped);
387 * Restore gets very upset if the root is not dumped,
388 * so ensure that it always is dumped.
390 SETINO(ROOTINO, dumpinomap);
391 return anydirskipped;
396 struct mapdirs_context {
406 * Scan each directory on the filesystem to see if it has any modified
407 * files in it. If it does, and has not already been added to the dump
408 * list (because it was itself modified), then add it. If a directory
409 * has not been modified itself, contains no modified files and has no
410 * subdirectories, then it can be deleted from the dump list and from
411 * the list of directories. By deleting it from the list of directories,
412 * its parent may now qualify for the same treatment on this or a later
413 * pass using this algorithm.
416 mapdirs(ino_t maxino, long *tapesize)
418 register struct dinode *dp;
426 struct mapdirs_context mdc;
428 int ret, change = 0, nodump;
430 isdir = 0; /* XXX just to get gcc to shut up */
431 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
432 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
437 * If dir has been removed from the used map, it's either
438 * because it had the nodump flag, or it herited it from
439 * its parent. A directory can't be in dumpinomap if not
440 * in usedinomap, but we have to go through it anyway
441 * to propagate the nodump attribute.
443 nodump = (TSTINO(ino, usedinomap) == 0);
444 if ((isdir & 1) == 0 ||
445 (TSTINO(ino, dumpinomap) && nodump == 0))
452 mdc.tapesize = tapesize;
453 ext2fs_dir_iterate(fs, ino, 0, NULL, searchdir, (void *) &mdc);
454 #else /* __linux__ */
455 filesize = dp->di_size;
456 for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) {
457 if (dp->di_db[i] != 0)
458 ret |= searchdir(ino, dp->di_db[i],
459 (long)dblksize(sblock, dp, i),
461 if (ret & HASDUMPEDFILE)
464 filesize -= sblock->fs_bsize;
466 for (i = 0; filesize > 0 && i < NIADDR; i++) {
467 if (dp->di_ib[i] == 0)
469 ret |= dirindir(ino, dp->di_ib[i], i, &filesize);
471 #endif /* __linux__ */
472 if (ret & HASDUMPEDFILE) {
473 SETINO(ino, dumpinomap);
474 *tapesize += blockest(dp);
479 if (ret & HASSUBDIRS)
480 change = 1; /* subdirs have inherited nodump */
481 CLRINO(ino, dumpdirmap);
482 } else if ((ret & HASSUBDIRS) == 0) {
483 if (!TSTINO(ino, dumpinomap)) {
484 CLRINO(ino, dumpdirmap);
494 * Read indirect blocks, and pass the data blocks to be searched
495 * as directories. Quit as soon as any entry is found that will
496 * require the directory to be dumped.
499 dirindir(ino_t ino, daddr_t blkno, int ind_level, long *filesize)
503 daddr_t idblk[MAXNINDIR];
505 bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize);
506 if (ind_level <= 0) {
507 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
510 ret |= searchdir(ino, blkno, sblock->fs_bsize,
512 if (ret & HASDUMPEDFILE)
515 *filesize -= sblock->fs_bsize;
520 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
523 ret |= dirindir(ino, blkno, ind_level, filesize);
527 #endif /* !__linux__ */
530 * Scan a disk block containing directory information looking to see if
531 * any of the entries are on the dump list and to see if the directory
532 * contains any subdirectories.
536 searchdir(struct ext2_dir_entry *dp, int offset, int blocksize, char *buf, void *private)
538 struct mapdirs_context *mdc;
543 mdc = (struct mapdirs_context *)private;
545 tapesize = mdc->tapesize;
549 if (dp->name[0] == '.') {
550 if (( dp->name_len & 0xFF ) == 1)
552 if (dp->name[1] == '.' && ( dp->name_len & 0xFF ) == 2)
556 ip = getino(dp->inode);
557 if (TSTINO(dp->inode, dumpinomap)) {
558 CLRINO(dp->inode, dumpinomap);
559 CLRINO(dp->inode, usedinomap);
560 *tapesize -= blockest(ip);
562 /* Add dir back to the dir map, to propagate nodump */
563 if ((ip->di_mode & IFMT) == IFDIR) {
564 SETINO(dp->inode, dumpdirmap);
568 if (TSTINO(dp->inode, dumpinomap)) {
569 *ret |= HASDUMPEDFILE;
570 if (*ret & HASSUBDIRS)
573 if (TSTINO(dp->inode, dumpdirmap)) {
575 if (*ret & HASDUMPEDFILE)
582 #else /* __linux__ */
585 searchdir(ino_t ino, daddr_t blkno, long size, long filesize)
587 register struct direct *dp;
588 register long loc, ret = 0;
591 bread(fsbtodb(sblock, blkno), dblk, (int)size);
594 for (loc = 0; loc < size; ) {
595 dp = (struct direct *)(dblk + loc);
596 if (dp->d_reclen == 0) {
597 msg("corrupted directory, inumber %d\n", ino);
603 if (dp->d_name[0] == '.') {
604 if (dp->d_name[1] == '\0')
606 if (dp->d_name[1] == '.' && dp->d_name[2] == '\0')
609 if (TSTINO(dp->d_ino, dumpinomap)) {
610 ret |= HASDUMPEDFILE;
611 if (ret & HASSUBDIRS)
614 if (TSTINO(dp->d_ino, dumpdirmap)) {
616 if (ret & HASDUMPEDFILE)
622 #endif /* __linux__ */
626 struct block_context {
635 * Dump a block to the tape
638 dumponeblock(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *private)
640 struct block_context *p;
643 if (blockcnt < NDADDR)
645 p = (struct block_context *)private;
646 for (i = p->next_block; i < blockcnt; i++) {
647 p->buf[p->cnt++] = 0;
648 if (p->cnt == p->max) {
649 blksout (p->buf, p->cnt, p->ino);
653 p->buf[p->cnt++] = *blocknr;
654 if (p->cnt == p->max) {
655 blksout (p->buf, p->cnt, p->ino);
658 p->next_block = blockcnt + 1;
664 * Dump passes 3 and 4.
666 * Dump the contents of an inode to tape.
669 dumpino(struct dinode *dp, ino_t ino)
674 struct old_bsd_inode obi;
676 struct block_context bc;
683 dumpmap(dumpinomap, TS_BITS, ino);
685 CLRINO(ino, dumpinomap);
687 memset(&obi, 0, sizeof(obi));
688 obi.di_mode = dp->di_mode;
689 obi.di_uid = dp->di_uid;
690 obi.di_gid = dp->di_gid;
691 obi.di_qsize.v = (u_quad_t)dp->di_size;
692 obi.di_atime = dp->di_atime;
693 obi.di_mtime = dp->di_mtime;
694 obi.di_ctime = dp->di_ctime;
695 obi.di_nlink = dp->di_nlink;
696 obi.di_blocks = dp->di_blocks;
697 obi.di_flags = dp->di_flags;
698 obi.di_gen = dp->di_gen;
699 memmove(&obi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
700 if (dp->di_file_acl || dp->di_dir_acl)
701 warn("ACLs in inode #%ld won't be dumped", (long)ino);
702 memmove(&spcl.c_dinode, &obi, sizeof(obi));
703 #else /* __linux__ */
705 #endif /* __linux__ */
706 spcl.c_type = TS_INODE;
708 switch (dp->di_mode & S_IFMT) {
718 msg("Warning: dumpino called on a directory (ino %d)\n", ino);
724 * Check for short symbolic link.
727 if (dp->di_size > 0 &&
728 dp->di_size < EXT2_N_BLOCKS * sizeof (daddr_t)) {
732 memmove(buf, dp->di_db, (u_long)dp->di_size);
733 buf[dp->di_size] = '\0';
737 #endif /* __linux__ */
739 if (dp->di_size > 0 &&
740 dp->di_size < sblock->fs_maxsymlinklen) {
744 memmove(buf, dp->di_shortlink, (u_long)dp->di_size);
745 buf[dp->di_size] = '\0';
768 msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT);
771 if (dp->di_size > NDADDR * sblock->fs_bsize)
773 cnt = NDADDR * EXT2_FRAGS_PER_BLOCK(fs->super);
775 cnt = NDADDR * sblock->fs_frag;
778 cnt = howmany(dp->di_size, sblock->fs_fsize);
779 blksout(&dp->di_db[0], cnt, ino);
780 if ((size = dp->di_size - NDADDR * sblock->fs_bsize) <= 0)
783 bc.max = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
784 bc.buf = (int *)malloc (bc.max * sizeof (int));
787 bc.next_block = NDADDR;
789 ext2fs_block_iterate (fs, ino, 0, NULL, dumponeblock, (void *)&bc);
791 blksout (bc.buf, bc.cnt, bc.ino);
795 for (ind_level = 0; ind_level < NIADDR; ind_level++) {
796 dmpindir(ino, dp->di_ib[ind_level], ind_level, &size);
805 struct convert_dir_context {
813 * This function converts an ext2fs directory entry to the BSD format.
815 * Basically, it adds a null-character at the end of the name, recomputes the
816 * size of the entry, and creates it in a temporary buffer
819 convert_dir(struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *private)
821 struct convert_dir_context *p;
822 struct olddirect *dp;
825 p = (struct convert_dir_context *)private;
827 reclen = EXT2_DIR_REC_LEN((dirent->name_len & 0xFF) + 1);
828 if (((p->offset + reclen - 1) / p->bs) != (p->offset / p->bs)) {
829 dp = (struct olddirect *)(p->buf + p->prev_offset);
830 dp->d_reclen += p->bs - (p->offset % p->bs);
831 p->offset += p->bs - (p->offset % p->bs);
834 dp = (struct olddirect *)(p->buf + p->offset);
835 dp->d_ino = dirent->inode;
836 dp->d_reclen = reclen;
837 dp->d_namlen = dirent->name_len & 0xFF;
838 strncpy(dp->d_name, dirent->name, dp->d_namlen);
839 dp->d_name[dp->d_namlen] = '\0';
840 p->prev_offset = p->offset;
849 * Dumps a directory to tape after converting it to the BSD format
852 dumpdirino(struct dinode *dp, ino_t ino)
856 struct old_bsd_inode obi;
857 struct convert_dir_context cdc;
859 struct ext2_dir_entry *de;
864 dumpmap(dumpinomap, TS_BITS, ino);
866 CLRINO(ino, dumpinomap);
869 * Convert the directory to the BSD format
871 /* Allocate a buffer for the conversion (twice the size of the
872 ext2fs directory to avoid problems ;-) */
873 cdc.buf = (char *)malloc(dp->di_size * 2 * sizeof(char));
875 err(1, "Cannot allocate buffer to convert directory #%lu\n",
879 cdc.bs = MIN(DIRBLKSIZ, TP_BSIZE);
880 /* Do the conversion */
881 retval = ext2fs_dir_iterate(fs, ino, 0, NULL, convert_dir, (void *)&cdc);
883 com_err(disk, retval, "while converting directory #%ld\n", (long)ino);
886 /* Fix the last entry */
887 if ((cdc.offset % cdc.bs) != 0) {
888 de = (struct ext2_dir_entry *)(cdc.buf + cdc.prev_offset);
889 de->rec_len += cdc.bs - (cdc.offset % cdc.bs);
890 cdc.offset += cdc.bs - (cdc.offset % cdc.bs);
893 dir_size = cdc.offset;
896 memset(&obi, 0, sizeof(obi));
897 obi.di_mode = dp->di_mode;
898 obi.di_uid = dp->di_uid;
899 obi.di_gid = dp->di_gid;
900 obi.di_qsize.v = dir_size; /* (u_quad_t)dp->di_size; */
901 obi.di_atime = dp->di_atime;
902 obi.di_mtime = dp->di_mtime;
903 obi.di_ctime = dp->di_ctime;
904 obi.di_nlink = dp->di_nlink;
905 obi.di_blocks = dp->di_blocks;
906 obi.di_flags = dp->di_flags;
907 obi.di_gen = dp->di_gen;
908 memmove(&obi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
909 if (dp->di_file_acl || dp->di_dir_acl)
910 warn("ACLs in inode #%ld won't be dumped", (long)ino);
911 memmove(&spcl.c_dinode, &obi, sizeof(obi));
912 #else /* __linux__ */
914 #endif /* __linux__ */
915 spcl.c_type = TS_INODE;
917 switch (dp->di_mode & S_IFMT) {
928 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
933 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
934 dp->di_mode & IFMT, ino);
937 for (size = 0; size < dir_size; size += TP_BSIZE) {
941 memmove(buf, cdc.buf + size, TP_BSIZE);
943 spcl.c_type = TS_ADDR;
948 #endif /* __linux__ */
952 * Read indirect blocks, and pass the data blocks to be dumped.
955 dmpindir(ino_t ino, daddr_t blk, int ind_level, fsizeT *size)
962 daddr_t idblk[MAXNINDIR];
965 bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize);
968 * My RedHat 4.0 system doesn't have these flags; I haven't
969 * upgraded e2fsprogs yet
971 #if defined(EXT2_FLAG_SWAP_BYTES)
972 if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
973 (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)) {
975 max = sblock->fs_bsize >> 2;
976 swapme = (blk_t *) idblk;
977 for (i = 0; i < max; i++, swapme++)
978 *swapme = swab32(*swapme);
979 #if defined(EXT2_FLAG_SWAP_BYTES)
984 memset(idblk, 0, (int)sblock->fs_bsize);
985 if (ind_level <= 0) {
986 if (*size < NINDIR(sblock) * sblock->fs_bsize)
987 cnt = howmany(*size, sblock->fs_fsize);
990 cnt = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
992 cnt = NINDIR(sblock) * sblock->fs_frag;
994 *size -= NINDIR(sblock) * sblock->fs_bsize;
995 blksout(&idblk[0], cnt, ino);
999 for (i = 0; i < NINDIR(sblock); i++) {
1000 dmpindir(ino, idblk[i], ind_level, size);
1008 * Collect up the data into tape record sized buffers and output them.
1011 blksout(daddr_t *blkp, int frags, ino_t ino)
1013 register daddr_t *bp;
1014 int i, j, count, blks, tbperdb;
1016 blks = howmany(frags * sblock->fs_fsize, TP_BSIZE);
1017 tbperdb = sblock->fs_bsize >> tp_bshift;
1018 for (i = 0; i < blks; i += TP_NINDIR) {
1019 if (i + TP_NINDIR > blks)
1022 count = i + TP_NINDIR;
1023 for (j = i; j < count; j++)
1024 if (blkp[j / tbperdb] != 0)
1025 spcl.c_addr[j - i] = 1;
1027 spcl.c_addr[j - i] = 0;
1028 spcl.c_count = count - i;
1030 bp = &blkp[i / tbperdb];
1031 for (j = i; j < count; j += tbperdb, bp++) {
1033 if (j + tbperdb <= count)
1034 dumpblock(*bp, (int)sblock->fs_bsize);
1036 dumpblock(*bp, (count - j) * TP_BSIZE);
1039 spcl.c_type = TS_ADDR;
1044 * Dump a map to the tape.
1047 dumpmap(char *map, int type, ino_t ino)
1053 spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE);
1055 for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE)
1060 * Write a header record to the dump tape.
1063 writeheader(ino_t ino)
1066 register __s32 sum, cnt, *lp;
1068 register int32_t sum, cnt, *lp;
1071 spcl.c_inumber = ino;
1072 spcl.c_magic = NFS_MAGIC;
1073 spcl.c_checksum = 0;
1075 lp = (__s32 *)&spcl;
1077 lp = (int32_t *)&spcl;
1081 cnt = sizeof(union u_spcl) / (4 * sizeof(__s32));
1083 cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t));
1085 while (--cnt >= 0) {
1091 spcl.c_checksum = CHECKSUM - sum;
1092 writerec((char *)&spcl, 1);
1099 static struct dinode dinode;
1102 ext2fs_read_inode(fs, inum, (struct ext2_inode *) &dinode);
1105 #else /* __linux__ */
1109 static daddr_t minino, maxino;
1110 static struct dinode inoblock[MAXINOPB];
1113 if (inum >= minino && inum < maxino)
1114 return (&inoblock[inum - minino]);
1115 bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock,
1116 (int)sblock->fs_bsize);
1117 minino = inum - (inum % INOPB(sblock));
1118 maxino = minino + INOPB(sblock);
1119 return (&inoblock[inum - minino]);
1121 #endif /* __linux__ */
1124 * Read a chunk of data from the disk.
1125 * Try to recover from hard errors by reading in sector sized pieces.
1126 * Error recovery is attempted at most BREADEMAX times before seeking
1127 * consent from the operator to continue.
1129 int breaderrors = 0;
1130 #define BREADEMAX 32
1133 bread(daddr_t blkno, char *buf, int size)
1140 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1141 (((ext2_loff_t)blkno) << dev_bshift))
1143 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1144 ((off_t)blkno << dev_bshift))
1146 msg("bread: lseek fails\n");
1147 if ((cnt = read(diskfd, buf, size)) == size)
1149 if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) {
1151 * Trying to read the final fragment.
1153 * NB - dump only works in TP_BSIZE blocks, hence
1154 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1155 * It should be smarter about not actually trying to
1156 * read more than it can get, but for the time being
1157 * we punt and scale back the read only when it gets
1158 * us into trouble. (mkm 9/25/83)
1164 msg("read error from %s: %s: [block %d]: count=%d\n",
1165 disk, strerror(errno), blkno, size);
1167 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1168 disk, blkno, size, cnt);
1169 if (++breaderrors > BREADEMAX) {
1170 msg("More than %d block read errors from %d\n",
1172 broadcast("DUMP IS AILING!\n");
1173 msg("This is an unrecoverable error.\n");
1174 if (!query("Do you want to attempt to continue?")){
1181 * Zero buffer, then try to read each sector of buffer separately.
1183 memset(buf, 0, size);
1184 for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) {
1186 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1187 (((ext2_loff_t)blkno) << dev_bshift))
1189 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1190 ((off_t)blkno << dev_bshift))
1192 msg("bread: lseek2 fails!\n");
1193 if ((cnt = read(diskfd, buf, (int)dev_bsize)) == dev_bsize)
1196 msg("read error from %s: %s: [sector %d]: count=%d\n",
1197 disk, strerror(errno), blkno, dev_bsize);
1200 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1201 disk, blkno, dev_bsize, cnt);