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 1.20 2000/09/26 13:17:09 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 */
110 int dump_fs_open(const char *disk, ext2_filsys *fs)
115 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
116 retval = ext2fs_open(disk, EXT2_FLAG_FORCE, 0, 0, unix_io_manager, fs);
118 retval = ext2fs_open(disk, 0, 0, 0, unix_io_manager, fs);
120 #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)
122 s = (struct ext2fs_sb *) (*fs)->super;
123 if ((s->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) ||
124 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
125 (s->s_feature_incompat & ~(EXT3_FEATURE_INCOMPAT_RECOVER | EXT2_LIB_FEATURE_INCOMPAT_SUPP))) {
127 (s->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP)) {
129 retval = EXT2_ET_UNSUPP_FEATURE;
131 else if (s->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) {
132 retval = EXT2_ET_RO_UNSUPP_FEATURE;
135 #endif /* defined && defined && defined... */
140 * This is an estimation of the number of TP_BSIZE blocks in the file.
141 * It estimates the number of blocks in files with holes by assuming
142 * that all of the blocks accounted for by di_blocks are data blocks
143 * (when some of the blocks are usually used for indirect pointers);
144 * hence the estimate may be high.
147 blockest(struct dinode *dp)
149 long blkest, sizeest;
152 * dp->di_size is the size of the file in bytes.
153 * dp->di_blocks stores the number of sectors actually in the file.
154 * If there are more sectors than the size would indicate, this just
155 * means that there are indirect blocks in the file or unused
156 * sectors in the last file block; we can safely ignore these
157 * (blkest = sizeest below).
158 * If the file is bigger than the number of sectors would indicate,
159 * then the file has holes in it. In this case we must use the
160 * block count to estimate the number of data blocks used, but
161 * we use the actual size for estimating the number of indirect
162 * dump blocks (sizeest vs. blkest in the indirect block
165 blkest = howmany(dbtob(dp->di_blocks), TP_BSIZE);
166 sizeest = howmany(dp->di_size, TP_BSIZE);
167 if (blkest > sizeest)
170 if (dp->di_size > fs->blocksize * NDADDR) {
171 /* calculate the number of indirect blocks on the dump tape */
173 howmany(sizeest - NDADDR * fs->blocksize / TP_BSIZE,
174 NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super));
177 if (dp->di_size > sblock->fs_bsize * NDADDR) {
178 /* calculate the number of indirect blocks on the dump tape */
180 howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE,
187 extern ino_t iexclude_list[IEXCLUDE_MAXNUM]; /* the inode exclude list */
188 extern int iexclude_num; /* number of elements in the list */
191 * This tests whether an inode is in the exclude list
194 exclude_ino(ino_t ino)
197 if (iexclude_num) { /* if there are inodes in the exclude list */
198 int idx; /* then check this inode against it */
199 for (idx = 0; idx < iexclude_num; idx++)
200 if (ino == iexclude_list[idx])
206 /* Auxiliary macro to pick up files changed since previous dump. */
207 #define CHANGEDSINCE(dp, t) \
208 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
210 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
212 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
214 #define NODUMP_FLAG(dp) 0
217 /* The WANTTODUMP macro decides whether a file should be dumped. */
218 #define WANTTODUMP(dp, ino) \
219 (CHANGEDSINCE(dp, spcl.c_ddate) && \
220 (!NODUMP_FLAG(dp)) && \
224 * Determine if given inode should be dumped
227 mapfileino(ino_t ino, long *tapesize, int *dirskipped)
230 register struct dinode *dp;
233 * Skip inode if we've already marked it for dumping
235 if (TSTINO(ino, usedinomap))
238 if ((mode = (dp->di_mode & IFMT)) == 0)
241 if (dp->di_nlink == 0 || dp->di_dtime != 0)
245 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
246 * used map. All inode but dirs who have the nodump attribute go
249 SETINO(ino, usedinomap);
252 SETINO(ino, dumpdirmap);
253 if (WANTTODUMP(dp, ino)) {
254 SETINO(ino, dumpinomap);
255 if (mode != IFREG && mode != IFDIR && mode != IFLNK)
258 *tapesize += blockest(dp);
262 if ( NODUMP_FLAG(dp) || exclude_ino(ino) )
263 CLRINO(ino, usedinomap);
271 * Walk the inode list for a filesystem to find all allocated inodes
272 * that have been modified since the previous dump time. Also, find all
273 * the directories in the filesystem.
276 mapfiles(ino_t maxino, long *tapesize)
279 int anydirskipped = 0;
281 for (ino = ROOTINO; ino < maxino; ino++)
282 mapfileino(ino, tapesize, &anydirskipped);
285 * Restore gets very upset if the root is not dumped,
286 * so ensure that it always is dumped.
288 SETINO(ROOTINO, dumpinomap);
289 return (anydirskipped);
293 struct mapfile_context {
299 mapfilesindir(struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *private)
301 register struct dinode *dp;
304 struct mapfile_context *mfc;
308 mfc = (struct mapfile_context *)private;
310 mapfileino(dirent->inode, mfc->tapesize, mfc->anydirskipped);
312 dp = getino(dirent->inode);
313 mode = dp->di_mode & IFMT;
314 if (mode == IFDIR && dp->di_nlink != 0 && dp->di_dtime == 0) {
315 if ((dirent->name[0] != '.' || ( dirent->name_len & 0xFF ) != 1) &&
316 (dirent->name[0] != '.' || dirent->name[1] != '.' ||
317 ( dirent->name_len & 0xFF ) != 2)) {
318 retval = ext2fs_dir_iterate(fs, ino, 0, NULL,
319 mapfilesindir, private);
330 * Walk the inode list for a filesystem to find all allocated inodes
331 * that have been modified since the previous dump time. Also, find all
332 * the directories in the filesystem.
335 mapfilesfromdir(ino_t maxino, long *tapesize, char *directory)
338 struct mapfile_context mfc;
340 char dir_name [MAXPATHLEN];
341 int i, anydirskipped = 0;
344 * Mark every directory in the path as being dumped
346 for (i = 0; i < strlen (directory); i++) {
347 if (directory[i] == '/') {
348 strncpy (dir_name, directory, i);
350 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, dir_name,
353 com_err(disk, retval, "while translating %s",
357 mapfileino(dir_ino, tapesize, &anydirskipped);
361 * Mark the final directory
363 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, directory, &dir_ino);
365 com_err(disk, retval, "while translating %s", directory);
368 mapfileino(dir_ino, tapesize, &anydirskipped);
370 mfc.tapesize = tapesize;
371 mfc.anydirskipped = &anydirskipped;
372 retval = ext2fs_dir_iterate(fs, dir_ino, 0, NULL, mapfilesindir,
376 com_err(disk, retval, "while mapping files in %s", directory);
380 * Ensure that the root inode actually appears in the file list
383 mapfileino(ROOTINO, tapesize, &anydirskipped);
385 * Restore gets very upset if the root is not dumped,
386 * so ensure that it always is dumped.
388 SETINO(ROOTINO, dumpinomap);
389 return anydirskipped;
394 struct mapdirs_context {
404 * Scan each directory on the filesystem to see if it has any modified
405 * files in it. If it does, and has not already been added to the dump
406 * list (because it was itself modified), then add it. If a directory
407 * has not been modified itself, contains no modified files and has no
408 * subdirectories, then it can be deleted from the dump list and from
409 * the list of directories. By deleting it from the list of directories,
410 * its parent may now qualify for the same treatment on this or a later
411 * pass using this algorithm.
414 mapdirs(ino_t maxino, long *tapesize)
416 register struct dinode *dp;
424 struct mapdirs_context mdc;
426 int ret, change = 0, nodump;
428 isdir = 0; /* XXX just to get gcc to shut up */
429 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
430 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
435 * If dir has been removed from the used map, it's either
436 * because it had the nodump flag, or it herited it from
437 * its parent. A directory can't be in dumpinomap if not
438 * in usedinomap, but we have to go through it anyway
439 * to propagate the nodump attribute.
441 nodump = (TSTINO(ino, usedinomap) == 0);
442 if ((isdir & 1) == 0 ||
443 (TSTINO(ino, dumpinomap) && nodump == 0))
450 mdc.tapesize = tapesize;
451 ext2fs_dir_iterate(fs, ino, 0, NULL, searchdir, (void *) &mdc);
452 #else /* __linux__ */
453 filesize = dp->di_size;
454 for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) {
455 if (dp->di_db[i] != 0)
456 ret |= searchdir(ino, dp->di_db[i],
457 (long)dblksize(sblock, dp, i),
459 if (ret & HASDUMPEDFILE)
462 filesize -= sblock->fs_bsize;
464 for (i = 0; filesize > 0 && i < NIADDR; i++) {
465 if (dp->di_ib[i] == 0)
467 ret |= dirindir(ino, dp->di_ib[i], i, &filesize);
469 #endif /* __linux__ */
470 if (ret & HASDUMPEDFILE) {
471 SETINO(ino, dumpinomap);
472 *tapesize += blockest(dp);
477 if (ret & HASSUBDIRS)
478 change = 1; /* subdirs have inherited nodump */
479 CLRINO(ino, dumpdirmap);
480 } else if ((ret & HASSUBDIRS) == 0) {
481 if (!TSTINO(ino, dumpinomap)) {
482 CLRINO(ino, dumpdirmap);
492 * Read indirect blocks, and pass the data blocks to be searched
493 * as directories. Quit as soon as any entry is found that will
494 * require the directory to be dumped.
497 dirindir(ino_t ino, daddr_t blkno, int ind_level, long *filesize)
501 daddr_t idblk[MAXNINDIR];
503 bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize);
504 if (ind_level <= 0) {
505 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
508 ret |= searchdir(ino, blkno, sblock->fs_bsize,
510 if (ret & HASDUMPEDFILE)
513 *filesize -= sblock->fs_bsize;
518 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
521 ret |= dirindir(ino, blkno, ind_level, filesize);
525 #endif /* !__linux__ */
528 * Scan a disk block containing directory information looking to see if
529 * any of the entries are on the dump list and to see if the directory
530 * contains any subdirectories.
534 searchdir(struct ext2_dir_entry *dp, int offset, int blocksize, char *buf, void *private)
536 struct mapdirs_context *mdc;
541 mdc = (struct mapdirs_context *)private;
543 tapesize = mdc->tapesize;
547 if (dp->name[0] == '.') {
548 if (( dp->name_len & 0xFF ) == 1)
550 if (dp->name[1] == '.' && ( dp->name_len & 0xFF ) == 2)
554 ip = getino(dp->inode);
555 if (TSTINO(dp->inode, dumpinomap)) {
556 CLRINO(dp->inode, dumpinomap);
557 CLRINO(dp->inode, usedinomap);
558 *tapesize -= blockest(ip);
560 /* Add dir back to the dir map, to propagate nodump */
561 if ((ip->di_mode & IFMT) == IFDIR) {
562 SETINO(dp->inode, dumpdirmap);
566 if (TSTINO(dp->inode, dumpinomap)) {
567 *ret |= HASDUMPEDFILE;
568 if (*ret & HASSUBDIRS)
571 if (TSTINO(dp->inode, dumpdirmap)) {
573 if (*ret & HASDUMPEDFILE)
580 #else /* __linux__ */
583 searchdir(ino_t ino, daddr_t blkno, long size, long filesize)
585 register struct direct *dp;
586 register long loc, ret = 0;
589 bread(fsbtodb(sblock, blkno), dblk, (int)size);
592 for (loc = 0; loc < size; ) {
593 dp = (struct direct *)(dblk + loc);
594 if (dp->d_reclen == 0) {
595 msg("corrupted directory, inumber %d\n", ino);
601 if (dp->d_name[0] == '.') {
602 if (dp->d_name[1] == '\0')
604 if (dp->d_name[1] == '.' && dp->d_name[2] == '\0')
607 if (TSTINO(dp->d_ino, dumpinomap)) {
608 ret |= HASDUMPEDFILE;
609 if (ret & HASSUBDIRS)
612 if (TSTINO(dp->d_ino, dumpdirmap)) {
614 if (ret & HASDUMPEDFILE)
620 #endif /* __linux__ */
624 struct block_context {
633 * Dump a block to the tape
636 dumponeblock(ext2_filsys fs, blk_t *blocknr, int blockcnt, void *private)
638 struct block_context *p;
641 if (blockcnt < NDADDR)
643 p = (struct block_context *)private;
644 for (i = p->next_block; i < blockcnt; i++) {
645 p->buf[p->cnt++] = 0;
646 if (p->cnt == p->max) {
647 blksout (p->buf, p->cnt, p->ino);
651 p->buf[p->cnt++] = *blocknr;
652 if (p->cnt == p->max) {
653 blksout (p->buf, p->cnt, p->ino);
656 p->next_block = blockcnt + 1;
662 * Dump passes 3 and 4.
664 * Dump the contents of an inode to tape.
667 dumpino(struct dinode *dp, ino_t ino)
672 struct old_bsd_inode obi;
674 struct block_context bc;
681 dumpmap(dumpinomap, TS_BITS, ino);
683 CLRINO(ino, dumpinomap);
685 memset(&obi, 0, sizeof(obi));
686 obi.di_mode = dp->di_mode;
687 obi.di_uid = dp->di_uid;
688 obi.di_gid = dp->di_gid;
689 obi.di_qsize.v = (u_quad_t)dp->di_size;
690 obi.di_atime = dp->di_atime;
691 obi.di_mtime = dp->di_mtime;
692 obi.di_ctime = dp->di_ctime;
693 obi.di_nlink = dp->di_nlink;
694 obi.di_blocks = dp->di_blocks;
695 obi.di_flags = dp->di_flags;
696 obi.di_gen = dp->di_gen;
697 memmove(&obi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
698 if (dp->di_file_acl || dp->di_dir_acl)
699 warn("ACLs in inode #%ld won't be dumped", (long)ino);
700 memmove(&spcl.c_dinode, &obi, sizeof(obi));
701 #else /* __linux__ */
703 #endif /* __linux__ */
704 spcl.c_type = TS_INODE;
706 switch (dp->di_mode & S_IFMT) {
716 msg("Warning: dumpino called on a directory (ino %d)\n", ino);
722 * Check for short symbolic link.
725 if (dp->di_size > 0 &&
726 dp->di_size < EXT2_N_BLOCKS * sizeof (daddr_t)) {
730 memmove(buf, dp->di_db, (u_long)dp->di_size);
731 buf[dp->di_size] = '\0';
735 #endif /* __linux__ */
737 if (dp->di_size > 0 &&
738 dp->di_size < sblock->fs_maxsymlinklen) {
742 memmove(buf, dp->di_shortlink, (u_long)dp->di_size);
743 buf[dp->di_size] = '\0';
766 msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT);
769 if (dp->di_size > NDADDR * sblock->fs_bsize)
771 cnt = NDADDR * EXT2_FRAGS_PER_BLOCK(fs->super);
773 cnt = NDADDR * sblock->fs_frag;
776 cnt = howmany(dp->di_size, sblock->fs_fsize);
777 blksout(&dp->di_db[0], cnt, ino);
778 if ((size = dp->di_size - NDADDR * sblock->fs_bsize) <= 0)
781 bc.max = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
782 bc.buf = (int *)malloc (bc.max * sizeof (int));
785 bc.next_block = NDADDR;
787 ext2fs_block_iterate (fs, ino, 0, NULL, dumponeblock, (void *)&bc);
789 blksout (bc.buf, bc.cnt, bc.ino);
793 for (ind_level = 0; ind_level < NIADDR; ind_level++) {
794 dmpindir(ino, dp->di_ib[ind_level], ind_level, &size);
803 struct convert_dir_context {
811 * This function converts an ext2fs directory entry to the BSD format.
813 * Basically, it adds a null-character at the end of the name, recomputes the
814 * size of the entry, and creates it in a temporary buffer
817 convert_dir(struct ext2_dir_entry *dirent, int offset, int blocksize, char *buf, void *private)
819 struct convert_dir_context *p;
820 struct olddirect *dp;
823 p = (struct convert_dir_context *)private;
825 reclen = EXT2_DIR_REC_LEN((dirent->name_len & 0xFF) + 1);
826 if (((p->offset + reclen - 1) / p->bs) != (p->offset / p->bs)) {
827 dp = (struct olddirect *)(p->buf + p->prev_offset);
828 dp->d_reclen += p->bs - (p->offset % p->bs);
829 p->offset += p->bs - (p->offset % p->bs);
832 dp = (struct olddirect *)(p->buf + p->offset);
833 dp->d_ino = dirent->inode;
834 dp->d_reclen = reclen;
835 dp->d_namlen = dirent->name_len & 0xFF;
836 strncpy(dp->d_name, dirent->name, dp->d_namlen);
837 dp->d_name[dp->d_namlen] = '\0';
838 p->prev_offset = p->offset;
847 * Dumps a directory to tape after converting it to the BSD format
850 dumpdirino(struct dinode *dp, ino_t ino)
854 struct old_bsd_inode obi;
855 struct convert_dir_context cdc;
857 struct ext2_dir_entry *de;
862 dumpmap(dumpinomap, TS_BITS, ino);
864 CLRINO(ino, dumpinomap);
867 * Convert the directory to the BSD format
869 /* Allocate a buffer for the conversion (twice the size of the
870 ext2fs directory to avoid problems ;-) */
871 cdc.buf = (char *)malloc(dp->di_size * 2 * sizeof(char));
873 err(1, "Cannot allocate buffer to convert directory #%lu\n",
877 cdc.bs = MIN(DIRBLKSIZ, TP_BSIZE);
878 /* Do the conversion */
879 retval = ext2fs_dir_iterate(fs, ino, 0, NULL, convert_dir, (void *)&cdc);
881 com_err(disk, retval, "while converting directory #%ld\n", (long)ino);
884 /* Fix the last entry */
885 if ((cdc.offset % cdc.bs) != 0) {
886 de = (struct ext2_dir_entry *)(cdc.buf + cdc.prev_offset);
887 de->rec_len += cdc.bs - (cdc.offset % cdc.bs);
888 cdc.offset += cdc.bs - (cdc.offset % cdc.bs);
891 dir_size = cdc.offset;
894 memset(&obi, 0, sizeof(obi));
895 obi.di_mode = dp->di_mode;
896 obi.di_uid = dp->di_uid;
897 obi.di_gid = dp->di_gid;
898 obi.di_qsize.v = dir_size; /* (u_quad_t)dp->di_size; */
899 obi.di_atime = dp->di_atime;
900 obi.di_mtime = dp->di_mtime;
901 obi.di_ctime = dp->di_ctime;
902 obi.di_nlink = dp->di_nlink;
903 obi.di_blocks = dp->di_blocks;
904 obi.di_flags = dp->di_flags;
905 obi.di_gen = dp->di_gen;
906 memmove(&obi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
907 if (dp->di_file_acl || dp->di_dir_acl)
908 warn("ACLs in inode #%ld won't be dumped", (long)ino);
909 memmove(&spcl.c_dinode, &obi, sizeof(obi));
910 #else /* __linux__ */
912 #endif /* __linux__ */
913 spcl.c_type = TS_INODE;
915 switch (dp->di_mode & S_IFMT) {
926 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
931 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
932 dp->di_mode & IFMT, ino);
935 for (size = 0; size < dir_size; size += TP_BSIZE) {
939 memmove(buf, cdc.buf + size, TP_BSIZE);
941 spcl.c_type = TS_ADDR;
946 #endif /* __linux__ */
950 * Read indirect blocks, and pass the data blocks to be dumped.
953 dmpindir(ino_t ino, daddr_t blk, int ind_level, fsizeT *size)
960 daddr_t idblk[MAXNINDIR];
963 bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize);
966 * My RedHat 4.0 system doesn't have these flags; I haven't
967 * upgraded e2fsprogs yet
969 #if defined(EXT2_FLAG_SWAP_BYTES)
970 if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
971 (fs->flags & EXT2_FLAG_SWAP_BYTES_READ)) {
973 max = sblock->fs_bsize >> 2;
974 swapme = (blk_t *) idblk;
975 for (i = 0; i < max; i++, swapme++)
976 *swapme = swab32(*swapme);
977 #if defined(EXT2_FLAG_SWAP_BYTES)
982 memset(idblk, 0, (int)sblock->fs_bsize);
983 if (ind_level <= 0) {
984 if (*size < NINDIR(sblock) * sblock->fs_bsize)
985 cnt = howmany(*size, sblock->fs_fsize);
988 cnt = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
990 cnt = NINDIR(sblock) * sblock->fs_frag;
992 *size -= NINDIR(sblock) * sblock->fs_bsize;
993 blksout(&idblk[0], cnt, ino);
997 for (i = 0; i < NINDIR(sblock); i++) {
998 dmpindir(ino, idblk[i], ind_level, size);
1006 * Collect up the data into tape record sized buffers and output them.
1009 blksout(daddr_t *blkp, int frags, ino_t ino)
1011 register daddr_t *bp;
1012 int i, j, count, blks, tbperdb;
1014 blks = howmany(frags * sblock->fs_fsize, TP_BSIZE);
1015 tbperdb = sblock->fs_bsize >> tp_bshift;
1016 for (i = 0; i < blks; i += TP_NINDIR) {
1017 if (i + TP_NINDIR > blks)
1020 count = i + TP_NINDIR;
1021 for (j = i; j < count; j++)
1022 if (blkp[j / tbperdb] != 0)
1023 spcl.c_addr[j - i] = 1;
1025 spcl.c_addr[j - i] = 0;
1026 spcl.c_count = count - i;
1028 bp = &blkp[i / tbperdb];
1029 for (j = i; j < count; j += tbperdb, bp++) {
1031 if (j + tbperdb <= count)
1032 dumpblock(*bp, (int)sblock->fs_bsize);
1034 dumpblock(*bp, (count - j) * TP_BSIZE);
1037 spcl.c_type = TS_ADDR;
1042 * Dump a map to the tape.
1045 dumpmap(char *map, int type, ino_t ino)
1051 spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE);
1053 for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE)
1058 * Write a header record to the dump tape.
1061 writeheader(ino_t ino)
1064 register __s32 sum, cnt, *lp;
1066 register int32_t sum, cnt, *lp;
1069 spcl.c_inumber = ino;
1070 spcl.c_magic = NFS_MAGIC;
1071 spcl.c_checksum = 0;
1073 lp = (__s32 *)&spcl;
1075 lp = (int32_t *)&spcl;
1079 cnt = sizeof(union u_spcl) / (4 * sizeof(__s32));
1081 cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t));
1083 while (--cnt >= 0) {
1089 spcl.c_checksum = CHECKSUM - sum;
1090 writerec((char *)&spcl, 1);
1097 static struct dinode dinode;
1100 ext2fs_read_inode(fs, inum, (struct ext2_inode *) &dinode);
1103 #else /* __linux__ */
1107 static daddr_t minino, maxino;
1108 static struct dinode inoblock[MAXINOPB];
1111 if (inum >= minino && inum < maxino)
1112 return (&inoblock[inum - minino]);
1113 bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock,
1114 (int)sblock->fs_bsize);
1115 minino = inum - (inum % INOPB(sblock));
1116 maxino = minino + INOPB(sblock);
1117 return (&inoblock[inum - minino]);
1119 #endif /* __linux__ */
1122 * Read a chunk of data from the disk.
1123 * Try to recover from hard errors by reading in sector sized pieces.
1124 * Error recovery is attempted at most BREADEMAX times before seeking
1125 * consent from the operator to continue.
1127 int breaderrors = 0;
1128 #define BREADEMAX 32
1131 bread(daddr_t blkno, char *buf, int size)
1138 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1139 (((ext2_loff_t)blkno) << dev_bshift))
1141 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1142 ((off_t)blkno << dev_bshift))
1144 msg("bread: lseek fails\n");
1145 if ((cnt = read(diskfd, buf, size)) == size)
1147 if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) {
1149 * Trying to read the final fragment.
1151 * NB - dump only works in TP_BSIZE blocks, hence
1152 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1153 * It should be smarter about not actually trying to
1154 * read more than it can get, but for the time being
1155 * we punt and scale back the read only when it gets
1156 * us into trouble. (mkm 9/25/83)
1162 msg("read error from %s: %s: [block %d]: count=%d\n",
1163 disk, strerror(errno), blkno, size);
1165 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1166 disk, blkno, size, cnt);
1167 if (++breaderrors > BREADEMAX) {
1168 msg("More than %d block read errors from %d\n",
1170 broadcast("DUMP IS AILING!\n");
1171 msg("This is an unrecoverable error.\n");
1172 if (!query("Do you want to attempt to continue?")){
1179 * Zero buffer, then try to read each sector of buffer separately.
1181 memset(buf, 0, size);
1182 for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) {
1184 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1185 (((ext2_loff_t)blkno) << dev_bshift))
1187 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1188 ((off_t)blkno << dev_bshift))
1190 msg("bread: lseek2 fails!\n");
1191 if ((cnt = read(diskfd, buf, (int)dev_bsize)) == dev_bsize)
1194 msg("read error from %s: %s: [sector %d]: count=%d\n",
1195 disk, strerror(errno), blkno, dev_bsize);
1198 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1199 disk, blkno, dev_bsize, cnt);