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 1.16 2000/02/10 09:42:32 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 quad_t fsizeT
;
94 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
95 int blocksize
, char *buf
, void *private));
97 static int dirindir
__P((ino_t ino
, daddr_t blkno
, int level
, long *size
));
98 static void dmpindir
__P((ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
99 static int searchdir
__P((ino_t ino
, daddr_t blkno
, long size
, long filesize
));
101 static void mapfileino
__P((ino_t ino
, long *tapesize
, int *dirskipped
));
103 /* #define EXT3_FEATURE_INCOMPAT_RECOVER */
105 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
110 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
111 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
113 retval
= ext2fs_open(disk
, 0, 0, 0, unix_io_manager
, fs
);
116 s
= (struct ext2fs_sb
*) (*fs
)->super
;
117 if ((s
->s_feature_compat
& ~EXT2_LIB_FEATURE_COMPAT_SUPP
) ||
118 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
119 (s
->s_feature_incompat
& ~(EXT3_FEATURE_INCOMPAT_RECOVER
| EXT2_LIB_FEATURE_INCOMPAT_SUPP
))) {
121 (s
->s_feature_incompat
& ~EXT2_LIB_FEATURE_INCOMPAT_SUPP
)) {
123 retval
= EXT2_ET_UNSUPP_FEATURE
;
125 else if (s
->s_feature_ro_compat
& ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP
) {
126 retval
= EXT2_ET_RO_UNSUPP_FEATURE
;
133 * This is an estimation of the number of TP_BSIZE blocks in the file.
134 * It estimates the number of blocks in files with holes by assuming
135 * that all of the blocks accounted for by di_blocks are data blocks
136 * (when some of the blocks are usually used for indirect pointers);
137 * hence the estimate may be high.
140 blockest(struct dinode
*dp
)
142 long blkest
, sizeest
;
145 * dp->di_size is the size of the file in bytes.
146 * dp->di_blocks stores the number of sectors actually in the file.
147 * If there are more sectors than the size would indicate, this just
148 * means that there are indirect blocks in the file or unused
149 * sectors in the last file block; we can safely ignore these
150 * (blkest = sizeest below).
151 * If the file is bigger than the number of sectors would indicate,
152 * then the file has holes in it. In this case we must use the
153 * block count to estimate the number of data blocks used, but
154 * we use the actual size for estimating the number of indirect
155 * dump blocks (sizeest vs. blkest in the indirect block
158 blkest
= howmany(dbtob(dp
->di_blocks
), TP_BSIZE
);
159 sizeest
= howmany(dp
->di_size
, TP_BSIZE
);
160 if (blkest
> sizeest
)
163 if (dp
->di_size
> fs
->blocksize
* NDADDR
) {
164 /* calculate the number of indirect blocks on the dump tape */
166 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
170 if (dp
->di_size
> sblock
->fs_bsize
* NDADDR
) {
171 /* calculate the number of indirect blocks on the dump tape */
173 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
180 /* Auxiliary macro to pick up files changed since previous dump. */
181 #define CHANGEDSINCE(dp, t) \
182 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
184 /* The WANTTODUMP macro decides whether a file should be dumped. */
186 #define WANTTODUMP(dp) \
187 (CHANGEDSINCE(dp, spcl.c_ddate) && \
188 (nonodump || ((dp)->di_flags & UF_NODUMP) != UF_NODUMP))
190 #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate)
193 extern ino_t iexclude_list
[IEXCLUDE_MAXNUM
]; /* the inode exclude list */
194 extern int iexclude_num
; /* number of elements in the list */
197 * Determine if given inode should be dumped
200 mapfileino(ino_t ino
, long *tapesize
, int *dirskipped
)
203 register struct dinode
*dp
;
206 * Skip inode if we've already marked it for dumping
208 if (TSTINO(ino
, usedinomap
))
211 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
214 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
218 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
219 * used map. All inode but dirs who have the nodump attribute go
222 SETINO(ino
, usedinomap
);
225 if(iexclude_num
) { /* if there are inodes in the exclude list */
226 int idx
; /* then check this inode against it */
227 for (idx
=0; idx
<iexclude_num
; idx
++) {
228 if (ino
== iexclude_list
[idx
]) {
229 msg("Excluding inode number %d\n", ino
);
230 return; /* if in list then skip */
236 SETINO(ino
, dumpdirmap
);
237 if (WANTTODUMP(dp
)) {
238 SETINO(ino
, dumpinomap
);
239 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
242 *tapesize
+= blockest(dp
);
247 if (!nonodump
&& (dp
->di_flags
& UF_NODUMP
))
248 CLRINO(ino
, usedinomap
);
257 * Walk the inode list for a filesystem to find all allocated inodes
258 * that have been modified since the previous dump time. Also, find all
259 * the directories in the filesystem.
262 mapfiles(ino_t maxino
, long *tapesize
)
265 int anydirskipped
= 0;
267 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
268 mapfileino(ino
, tapesize
, &anydirskipped
);
271 * Restore gets very upset if the root is not dumped,
272 * so ensure that it always is dumped.
274 SETINO(ROOTINO
, dumpinomap
);
275 return (anydirskipped
);
279 struct mapfile_context
{
285 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
287 register struct dinode
*dp
;
290 struct mapfile_context
*mfc
;
294 mfc
= (struct mapfile_context
*)private;
296 mapfileino(dirent
->inode
, mfc
->tapesize
, mfc
->anydirskipped
);
298 dp
= getino(dirent
->inode
);
299 mode
= dp
->di_mode
& IFMT
;
300 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
301 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
302 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
303 ( dirent
->name_len
& 0xFF ) != 2)) {
304 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
305 mapfilesindir
, private);
316 * Walk the inode list for a filesystem to find all allocated inodes
317 * that have been modified since the previous dump time. Also, find all
318 * the directories in the filesystem.
321 mapfilesfromdir(ino_t maxino
, long *tapesize
, char *directory
)
324 struct mapfile_context mfc
;
326 char dir_name
[MAXPATHLEN
];
327 int i
, anydirskipped
= 0;
330 * Mark every directory in the path as being dumped
332 for (i
= 0; i
< strlen (directory
); i
++) {
333 if (directory
[i
] == '/') {
334 strncpy (dir_name
, directory
, i
);
336 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
339 com_err(disk
, retval
, "while translating %s",
343 mapfileino(dir_ino
, tapesize
, &anydirskipped
);
347 * Mark the final directory
349 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
351 com_err(disk
, retval
, "while translating %s", directory
);
354 mapfileino(dir_ino
, tapesize
, &anydirskipped
);
356 mfc
.tapesize
= tapesize
;
357 mfc
.anydirskipped
= &anydirskipped
;
358 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
362 com_err(disk
, retval
, "while mapping files in %s", directory
);
366 * Ensure that the root inode actually appears in the file list
369 mapfileino(ROOTINO
, tapesize
, &anydirskipped
);
371 * Restore gets very upset if the root is not dumped,
372 * so ensure that it always is dumped.
374 SETINO(ROOTINO
, dumpinomap
);
375 return anydirskipped
;
380 struct mapdirs_context
{
390 * Scan each directory on the filesystem to see if it has any modified
391 * files in it. If it does, and has not already been added to the dump
392 * list (because it was itself modified), then add it. If a directory
393 * has not been modified itself, contains no modified files and has no
394 * subdirectories, then it can be deleted from the dump list and from
395 * the list of directories. By deleting it from the list of directories,
396 * its parent may now qualify for the same treatment on this or a later
397 * pass using this algorithm.
400 mapdirs(ino_t maxino
, long *tapesize
)
402 register struct dinode
*dp
;
410 struct mapdirs_context mdc
;
412 int ret
, change
= 0, nodump
;
414 isdir
= 0; /* XXX just to get gcc to shut up */
415 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
416 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
421 * If dir has been removed from the used map, it's either
422 * because it had the nodump flag, or it herited it from
423 * its parent. A directory can't be in dumpinomap if not
424 * in usedinomap, but we have to go through it anyway
425 * to propagate the nodump attribute.
427 nodump
= (TSTINO(ino
, usedinomap
) == 0);
428 if ((isdir
& 1) == 0 ||
429 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
436 mdc
.tapesize
= tapesize
;
437 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
438 #else /* __linux__ */
439 filesize
= dp
->di_size
;
440 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
441 if (dp
->di_db
[i
] != 0)
442 ret
|= searchdir(ino
, dp
->di_db
[i
],
443 (long)dblksize(sblock
, dp
, i
),
445 if (ret
& HASDUMPEDFILE
)
448 filesize
-= sblock
->fs_bsize
;
450 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
451 if (dp
->di_ib
[i
] == 0)
453 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
455 #endif /* __linux__ */
456 if (ret
& HASDUMPEDFILE
) {
457 SETINO(ino
, dumpinomap
);
458 *tapesize
+= blockest(dp
);
463 if (ret
& HASSUBDIRS
)
464 change
= 1; /* subdirs have inherited nodump */
465 CLRINO(ino
, dumpdirmap
);
466 } else if ((ret
& HASSUBDIRS
) == 0) {
467 if (!TSTINO(ino
, dumpinomap
)) {
468 CLRINO(ino
, dumpdirmap
);
478 * Read indirect blocks, and pass the data blocks to be searched
479 * as directories. Quit as soon as any entry is found that will
480 * require the directory to be dumped.
483 dirindir(ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
487 daddr_t idblk
[MAXNINDIR
];
489 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
490 if (ind_level
<= 0) {
491 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
494 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
496 if (ret
& HASDUMPEDFILE
)
499 *filesize
-= sblock
->fs_bsize
;
504 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
507 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
511 #endif /* !__linux__ */
514 * Scan a disk block containing directory information looking to see if
515 * any of the entries are on the dump list and to see if the directory
516 * contains any subdirectories.
520 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
522 struct mapdirs_context
*mdc
;
527 mdc
= (struct mapdirs_context
*)private;
529 tapesize
= mdc
->tapesize
;
533 if (dp
->name
[0] == '.') {
534 if (( dp
->name_len
& 0xFF ) == 1)
536 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
540 ip
= getino(dp
->inode
);
541 if (TSTINO(dp
->inode
, dumpinomap
)) {
542 CLRINO(dp
->inode
, dumpinomap
);
543 CLRINO(dp
->inode
, usedinomap
);
544 *tapesize
-= blockest(ip
);
546 /* Add dir back to the dir map, to propagate nodump */
547 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
548 SETINO(dp
->inode
, dumpdirmap
);
552 if (TSTINO(dp
->inode
, dumpinomap
)) {
553 *ret
|= HASDUMPEDFILE
;
554 if (*ret
& HASSUBDIRS
)
557 if (TSTINO(dp
->inode
, dumpdirmap
)) {
559 if (*ret
& HASDUMPEDFILE
)
566 #else /* __linux__ */
569 searchdir(ino_t ino
, daddr_t blkno
, long size
, long filesize
)
571 register struct direct
*dp
;
572 register long loc
, ret
= 0;
575 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
578 for (loc
= 0; loc
< size
; ) {
579 dp
= (struct direct
*)(dblk
+ loc
);
580 if (dp
->d_reclen
== 0) {
581 msg("corrupted directory, inumber %d\n", ino
);
587 if (dp
->d_name
[0] == '.') {
588 if (dp
->d_name
[1] == '\0')
590 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
593 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
594 ret
|= HASDUMPEDFILE
;
595 if (ret
& HASSUBDIRS
)
598 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
600 if (ret
& HASDUMPEDFILE
)
606 #endif /* __linux__ */
610 struct block_context
{
619 * Dump a block to the tape
622 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, int blockcnt
, void *private)
624 struct block_context
*p
;
627 if (blockcnt
< NDADDR
)
629 p
= (struct block_context
*)private;
630 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
631 p
->buf
[p
->cnt
++] = 0;
632 if (p
->cnt
== p
->max
) {
633 blksout (p
->buf
, p
->cnt
, p
->ino
);
637 p
->buf
[p
->cnt
++] = *blocknr
;
638 if (p
->cnt
== p
->max
) {
639 blksout (p
->buf
, p
->cnt
, p
->ino
);
642 p
->next_block
= blockcnt
+ 1;
648 * Dump passes 3 and 4.
650 * Dump the contents of an inode to tape.
653 dumpino(struct dinode
*dp
, ino_t ino
)
658 struct old_bsd_inode obi
;
660 struct block_context bc
;
667 dumpmap(dumpinomap
, TS_BITS
, ino
);
669 CLRINO(ino
, dumpinomap
);
671 memset(&obi
, 0, sizeof(obi
));
672 obi
.di_mode
= dp
->di_mode
;
673 obi
.di_uid
= dp
->di_uid
;
674 obi
.di_gid
= dp
->di_gid
;
675 obi
.di_qsize
.v
= (u_quad_t
)dp
->di_size
;
676 obi
.di_atime
= dp
->di_atime
;
677 obi
.di_mtime
= dp
->di_mtime
;
678 obi
.di_ctime
= dp
->di_ctime
;
679 obi
.di_nlink
= dp
->di_nlink
;
680 obi
.di_blocks
= dp
->di_blocks
;
681 obi
.di_flags
= dp
->di_flags
;
682 obi
.di_gen
= dp
->di_gen
;
683 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
684 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
685 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
686 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
687 #else /* __linux__ */
689 #endif /* __linux__ */
690 spcl
.c_type
= TS_INODE
;
692 switch (dp
->di_mode
& S_IFMT
) {
702 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
708 * Check for short symbolic link.
711 if (dp
->di_size
> 0 &&
712 dp
->di_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
716 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
717 buf
[dp
->di_size
] = '\0';
721 #endif /* __linux__ */
723 if (dp
->di_size
> 0 &&
724 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
728 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
729 buf
[dp
->di_size
] = '\0';
752 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
755 if (dp
->di_size
> NDADDR
* sblock
->fs_bsize
)
757 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
759 cnt
= NDADDR
* sblock
->fs_frag
;
762 cnt
= howmany(dp
->di_size
, sblock
->fs_fsize
);
763 blksout(&dp
->di_db
[0], cnt
, ino
);
764 if ((size
= dp
->di_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
767 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
768 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
771 bc
.next_block
= NDADDR
;
773 ext2fs_block_iterate (fs
, ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
775 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
779 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
780 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
789 struct convert_dir_context
{
797 * This function converts an ext2fs directory entry to the BSD format.
799 * Basically, it adds a null-character at the end of the name, recomputes the
800 * size of the entry, and creates it in a temporary buffer
803 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
805 struct convert_dir_context
*p
;
806 struct olddirect
*dp
;
809 p
= (struct convert_dir_context
*)private;
811 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
812 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
813 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
814 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
815 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
818 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
819 dp
->d_ino
= dirent
->inode
;
820 dp
->d_reclen
= reclen
;
821 dp
->d_namlen
= dirent
->name_len
& 0xFF;
822 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
823 dp
->d_name
[dp
->d_namlen
] = '\0';
824 p
->prev_offset
= p
->offset
;
833 * Dumps a directory to tape after converting it to the BSD format
836 dumpdirino(struct dinode
*dp
, ino_t ino
)
840 struct old_bsd_inode obi
;
841 struct convert_dir_context cdc
;
843 struct ext2_dir_entry
*de
;
848 dumpmap(dumpinomap
, TS_BITS
, ino
);
850 CLRINO(ino
, dumpinomap
);
853 * Convert the directory to the BSD format
855 /* Allocate a buffer for the conversion (twice the size of the
856 ext2fs directory to avoid problems ;-) */
857 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
859 err(1, "Cannot allocate buffer to convert directory #%lu\n",
863 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
864 /* Do the conversion */
865 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
867 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
870 /* Fix the last entry */
871 if ((cdc
.offset
% cdc
.bs
) != 0) {
872 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
873 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
874 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
877 dir_size
= cdc
.offset
;
880 memset(&obi
, 0, sizeof(obi
));
881 obi
.di_mode
= dp
->di_mode
;
882 obi
.di_uid
= dp
->di_uid
;
883 obi
.di_gid
= dp
->di_gid
;
884 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
885 obi
.di_atime
= dp
->di_atime
;
886 obi
.di_mtime
= dp
->di_mtime
;
887 obi
.di_ctime
= dp
->di_ctime
;
888 obi
.di_nlink
= dp
->di_nlink
;
889 obi
.di_blocks
= dp
->di_blocks
;
890 obi
.di_flags
= dp
->di_flags
;
891 obi
.di_gen
= dp
->di_gen
;
892 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
893 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
894 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
895 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
896 #else /* __linux__ */
898 #endif /* __linux__ */
899 spcl
.c_type
= TS_INODE
;
901 switch (dp
->di_mode
& S_IFMT
) {
912 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
917 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
918 dp
->di_mode
& IFMT
, ino
);
921 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
925 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
927 spcl
.c_type
= TS_ADDR
;
932 #endif /* __linux__ */
936 * Read indirect blocks, and pass the data blocks to be dumped.
939 dmpindir(ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
946 daddr_t idblk
[MAXNINDIR
];
949 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
952 * My RedHat 4.0 system doesn't have these flags; I haven't
953 * upgraded e2fsprogs yet
955 #if defined(EXT2_FLAG_SWAP_BYTES)
956 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
957 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
)) {
959 max
= sblock
->fs_bsize
>> 2;
960 swapme
= (blk_t
*) idblk
;
961 for (i
= 0; i
< max
; i
++, swapme
++)
962 *swapme
= swab32(*swapme
);
963 #if defined(EXT2_FLAG_SWAP_BYTES)
968 memset(idblk
, 0, (int)sblock
->fs_bsize
);
969 if (ind_level
<= 0) {
970 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
971 cnt
= howmany(*size
, sblock
->fs_fsize
);
974 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
976 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
978 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
979 blksout(&idblk
[0], cnt
, ino
);
983 for (i
= 0; i
< NINDIR(sblock
); i
++) {
984 dmpindir(ino
, idblk
[i
], ind_level
, size
);
992 * Collect up the data into tape record sized buffers and output them.
995 blksout(daddr_t
*blkp
, int frags
, ino_t ino
)
997 register daddr_t
*bp
;
998 int i
, j
, count
, blks
, tbperdb
;
1000 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1001 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1002 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1003 if (i
+ TP_NINDIR
> blks
)
1006 count
= i
+ TP_NINDIR
;
1007 for (j
= i
; j
< count
; j
++)
1008 if (blkp
[j
/ tbperdb
] != 0)
1009 spcl
.c_addr
[j
- i
] = 1;
1011 spcl
.c_addr
[j
- i
] = 0;
1012 spcl
.c_count
= count
- i
;
1014 bp
= &blkp
[i
/ tbperdb
];
1015 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1017 if (j
+ tbperdb
<= count
)
1018 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1020 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1023 spcl
.c_type
= TS_ADDR
;
1028 * Dump a map to the tape.
1031 dumpmap(char *map
, int type
, ino_t ino
)
1037 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1039 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1044 * Write a header record to the dump tape.
1047 writeheader(ino_t ino
)
1050 register __s32 sum
, cnt
, *lp
;
1052 register int32_t sum
, cnt
, *lp
;
1055 spcl
.c_inumber
= ino
;
1056 spcl
.c_magic
= NFS_MAGIC
;
1057 spcl
.c_checksum
= 0;
1059 lp
= (__s32
*)&spcl
;
1061 lp
= (int32_t *)&spcl
;
1065 cnt
= sizeof(union u_spcl
) / (4 * sizeof(__s32
));
1067 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1069 while (--cnt
>= 0) {
1075 spcl
.c_checksum
= CHECKSUM
- sum
;
1076 writerec((char *)&spcl
, 1);
1083 static struct dinode dinode
;
1086 ext2fs_read_inode(fs
, inum
, (struct ext2_inode
*) &dinode
);
1089 #else /* __linux__ */
1093 static daddr_t minino
, maxino
;
1094 static struct dinode inoblock
[MAXINOPB
];
1097 if (inum
>= minino
&& inum
< maxino
)
1098 return (&inoblock
[inum
- minino
]);
1099 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1100 (int)sblock
->fs_bsize
);
1101 minino
= inum
- (inum
% INOPB(sblock
));
1102 maxino
= minino
+ INOPB(sblock
);
1103 return (&inoblock
[inum
- minino
]);
1105 #endif /* __linux__ */
1108 * Read a chunk of data from the disk.
1109 * Try to recover from hard errors by reading in sector sized pieces.
1110 * Error recovery is attempted at most BREADEMAX times before seeking
1111 * consent from the operator to continue.
1113 int breaderrors
= 0;
1114 #define BREADEMAX 32
1117 bread(daddr_t blkno
, char *buf
, int size
)
1124 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1125 (((ext2_loff_t
)blkno
) << dev_bshift
))
1127 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1128 ((off_t
)blkno
<< dev_bshift
))
1130 msg("bread: lseek fails\n");
1131 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1133 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1135 * Trying to read the final fragment.
1137 * NB - dump only works in TP_BSIZE blocks, hence
1138 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1139 * It should be smarter about not actually trying to
1140 * read more than it can get, but for the time being
1141 * we punt and scale back the read only when it gets
1142 * us into trouble. (mkm 9/25/83)
1148 msg("read error from %s: %s: [block %d]: count=%d\n",
1149 disk
, strerror(errno
), blkno
, size
);
1151 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1152 disk
, blkno
, size
, cnt
);
1153 if (++breaderrors
> BREADEMAX
) {
1154 msg("More than %d block read errors from %d\n",
1156 broadcast("DUMP IS AILING!\n");
1157 msg("This is an unrecoverable error.\n");
1158 if (!query("Do you want to attempt to continue?")){
1165 * Zero buffer, then try to read each sector of buffer separately.
1167 memset(buf
, 0, size
);
1168 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1170 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1171 (((ext2_loff_t
)blkno
) << dev_bshift
))
1173 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1174 ((off_t
)blkno
<< dev_bshift
))
1176 msg("bread: lseek2 fails!\n");
1177 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1180 msg("read error from %s: %s: [sector %d]: count=%d\n",
1181 disk
, strerror(errno
), blkno
, dev_bsize
);
1184 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1185 disk
, blkno
, dev_bsize
, cnt
);