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
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 1.13 2000/01/13 09:38:26 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)
194 * Determine if given inode should be dumped
197 mapfileino(ino_t ino
, long *tapesize
, int *dirskipped
)
200 register struct dinode
*dp
;
203 * Skip inode if we've already marked it for dumping
205 if (TSTINO(ino
, usedinomap
))
208 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
211 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
215 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
216 * used map. All inode but dirs who have the nodump attribute go
219 SETINO(ino
, usedinomap
);
221 SETINO(ino
, dumpdirmap
);
222 if (WANTTODUMP(dp
)) {
223 SETINO(ino
, dumpinomap
);
224 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
227 *tapesize
+= blockest(dp
);
232 if (!nonodump
&& (dp
->di_flags
& UF_NODUMP
))
233 CLRINO(ino
, usedinomap
);
242 * Walk the inode list for a filesystem to find all allocated inodes
243 * that have been modified since the previous dump time. Also, find all
244 * the directories in the filesystem.
247 mapfiles(ino_t maxino
, long *tapesize
)
250 int anydirskipped
= 0;
252 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
253 mapfileino(ino
, tapesize
, &anydirskipped
);
256 * Restore gets very upset if the root is not dumped,
257 * so ensure that it always is dumped.
259 SETINO(ROOTINO
, dumpinomap
);
260 return (anydirskipped
);
264 struct mapfile_context
{
270 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
272 register struct dinode
*dp
;
275 struct mapfile_context
*mfc
;
279 mfc
= (struct mapfile_context
*)private;
281 mapfileino(dirent
->inode
, mfc
->tapesize
, mfc
->anydirskipped
);
283 dp
= getino(dirent
->inode
);
284 mode
= dp
->di_mode
& IFMT
;
285 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
286 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
287 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
288 ( dirent
->name_len
& 0xFF ) != 2)) {
289 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
290 mapfilesindir
, private);
301 * Walk the inode list for a filesystem to find all allocated inodes
302 * that have been modified since the previous dump time. Also, find all
303 * the directories in the filesystem.
306 mapfilesfromdir(ino_t maxino
, long *tapesize
, char *directory
)
309 struct mapfile_context mfc
;
311 char dir_name
[MAXPATHLEN
];
312 int i
, anydirskipped
= 0;
315 * Mark every directory in the path as being dumped
317 for (i
= 0; i
< strlen (directory
); i
++) {
318 if (directory
[i
] == '/') {
319 strncpy (dir_name
, directory
, i
);
321 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
324 com_err(disk
, retval
, "while translating %s",
328 mapfileino(dir_ino
, tapesize
, &anydirskipped
);
332 * Mark the final directory
334 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
336 com_err(disk
, retval
, "while translating %s", directory
);
339 mapfileino(dir_ino
, tapesize
, &anydirskipped
);
341 mfc
.tapesize
= tapesize
;
342 mfc
.anydirskipped
= &anydirskipped
;
343 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
347 com_err(disk
, retval
, "while mapping files in %s", directory
);
351 * Ensure that the root inode actually appears in the file list
354 mapfileino(ROOTINO
, tapesize
, &anydirskipped
);
356 * Restore gets very upset if the root is not dumped,
357 * so ensure that it always is dumped.
359 SETINO(ROOTINO
, dumpinomap
);
360 return anydirskipped
;
365 struct mapdirs_context
{
375 * Scan each directory on the filesystem to see if it has any modified
376 * files in it. If it does, and has not already been added to the dump
377 * list (because it was itself modified), then add it. If a directory
378 * has not been modified itself, contains no modified files and has no
379 * subdirectories, then it can be deleted from the dump list and from
380 * the list of directories. By deleting it from the list of directories,
381 * its parent may now qualify for the same treatment on this or a later
382 * pass using this algorithm.
385 mapdirs(ino_t maxino
, long *tapesize
)
387 register struct dinode
*dp
;
395 struct mapdirs_context mdc
;
397 int ret
, change
= 0, nodump
;
399 isdir
= 0; /* XXX just to get gcc to shut up */
400 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
401 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
406 * If dir has been removed from the used map, it's either
407 * because it had the nodump flag, or it herited it from
408 * its parent. A directory can't be in dumpinomap if not
409 * in usedinomap, but we have to go through it anyway
410 * to propagate the nodump attribute.
412 nodump
= (TSTINO(ino
, usedinomap
) == 0);
413 if ((isdir
& 1) == 0 ||
414 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
421 mdc
.tapesize
= tapesize
;
422 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
423 #else /* __linux__ */
424 filesize
= dp
->di_size
;
425 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
426 if (dp
->di_db
[i
] != 0)
427 ret
|= searchdir(ino
, dp
->di_db
[i
],
428 (long)dblksize(sblock
, dp
, i
),
430 if (ret
& HASDUMPEDFILE
)
433 filesize
-= sblock
->fs_bsize
;
435 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
436 if (dp
->di_ib
[i
] == 0)
438 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
440 #endif /* __linux__ */
441 if (ret
& HASDUMPEDFILE
) {
442 SETINO(ino
, dumpinomap
);
443 *tapesize
+= blockest(dp
);
448 if (ret
& HASSUBDIRS
)
449 change
= 1; /* subdirs have inherited nodump */
450 CLRINO(ino
, dumpdirmap
);
451 } else if ((ret
& HASSUBDIRS
) == 0) {
452 if (!TSTINO(ino
, dumpinomap
)) {
453 CLRINO(ino
, dumpdirmap
);
463 * Read indirect blocks, and pass the data blocks to be searched
464 * as directories. Quit as soon as any entry is found that will
465 * require the directory to be dumped.
468 dirindir(ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
472 daddr_t idblk
[MAXNINDIR
];
474 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
475 if (ind_level
<= 0) {
476 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
479 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
481 if (ret
& HASDUMPEDFILE
)
484 *filesize
-= sblock
->fs_bsize
;
489 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
492 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
496 #endif /* !__linux__ */
499 * Scan a disk block containing directory information looking to see if
500 * any of the entries are on the dump list and to see if the directory
501 * contains any subdirectories.
505 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
507 struct mapdirs_context
*mdc
;
512 mdc
= (struct mapdirs_context
*)private;
514 tapesize
= mdc
->tapesize
;
518 if (dp
->name
[0] == '.') {
519 if (( dp
->name_len
& 0xFF ) == 1)
521 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
525 ip
= getino(dp
->inode
);
526 if (TSTINO(dp
->inode
, dumpinomap
)) {
527 CLRINO(dp
->inode
, dumpinomap
);
528 CLRINO(dp
->inode
, usedinomap
);
529 *tapesize
-= blockest(ip
);
531 /* Add dir back to the dir map, to propagate nodump */
532 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
533 SETINO(dp
->inode
, dumpdirmap
);
537 if (TSTINO(dp
->inode
, dumpinomap
)) {
538 *ret
|= HASDUMPEDFILE
;
539 if (*ret
& HASSUBDIRS
)
542 if (TSTINO(dp
->inode
, dumpdirmap
)) {
544 if (*ret
& HASDUMPEDFILE
)
551 #else /* __linux__ */
554 searchdir(ino_t ino
, daddr_t blkno
, long size
, long filesize
)
556 register struct direct
*dp
;
557 register long loc
, ret
= 0;
560 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
563 for (loc
= 0; loc
< size
; ) {
564 dp
= (struct direct
*)(dblk
+ loc
);
565 if (dp
->d_reclen
== 0) {
566 msg("corrupted directory, inumber %d\n", ino
);
572 if (dp
->d_name
[0] == '.') {
573 if (dp
->d_name
[1] == '\0')
575 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
578 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
579 ret
|= HASDUMPEDFILE
;
580 if (ret
& HASSUBDIRS
)
583 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
585 if (ret
& HASDUMPEDFILE
)
591 #endif /* __linux__ */
595 struct block_context
{
604 * Dump a block to the tape
607 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, int blockcnt
, void *private)
609 struct block_context
*p
;
612 if (blockcnt
< NDADDR
)
614 p
= (struct block_context
*)private;
615 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
616 p
->buf
[p
->cnt
++] = 0;
617 if (p
->cnt
== p
->max
) {
618 blksout (p
->buf
, p
->cnt
, p
->ino
);
622 p
->buf
[p
->cnt
++] = *blocknr
;
623 if (p
->cnt
== p
->max
) {
624 blksout (p
->buf
, p
->cnt
, p
->ino
);
627 p
->next_block
= blockcnt
+ 1;
633 * Dump passes 3 and 4.
635 * Dump the contents of an inode to tape.
638 dumpino(struct dinode
*dp
, ino_t ino
)
643 struct old_bsd_inode obi
;
645 struct block_context bc
;
652 dumpmap(dumpinomap
, TS_BITS
, ino
);
654 CLRINO(ino
, dumpinomap
);
656 memset(&obi
, 0, sizeof(obi
));
657 obi
.di_mode
= dp
->di_mode
;
658 obi
.di_uid
= dp
->di_uid
;
659 obi
.di_gid
= dp
->di_gid
;
660 obi
.di_qsize
.v
= (u_quad_t
)dp
->di_size
;
661 obi
.di_atime
= dp
->di_atime
;
662 obi
.di_mtime
= dp
->di_mtime
;
663 obi
.di_ctime
= dp
->di_ctime
;
664 obi
.di_nlink
= dp
->di_nlink
;
665 obi
.di_blocks
= dp
->di_blocks
;
666 obi
.di_flags
= dp
->di_flags
;
667 obi
.di_gen
= dp
->di_gen
;
668 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
669 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
670 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
671 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
672 #else /* __linux__ */
674 #endif /* __linux__ */
675 spcl
.c_type
= TS_INODE
;
677 switch (dp
->di_mode
& S_IFMT
) {
687 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
693 * Check for short symbolic link.
696 if (dp
->di_size
> 0 &&
697 dp
->di_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
701 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
702 buf
[dp
->di_size
] = '\0';
706 #endif /* __linux__ */
708 if (dp
->di_size
> 0 &&
709 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
713 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
714 buf
[dp
->di_size
] = '\0';
737 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
740 if (dp
->di_size
> NDADDR
* sblock
->fs_bsize
)
742 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
744 cnt
= NDADDR
* sblock
->fs_frag
;
747 cnt
= howmany(dp
->di_size
, sblock
->fs_fsize
);
748 blksout(&dp
->di_db
[0], cnt
, ino
);
749 if ((size
= dp
->di_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
752 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
753 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
756 bc
.next_block
= NDADDR
;
758 ext2fs_block_iterate (fs
, ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
760 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
764 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
765 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
774 struct convert_dir_context
{
782 * This function converts an ext2fs directory entry to the BSD format.
784 * Basically, it adds a null-character at the end of the name, recomputes the
785 * size of the entry, and creates it in a temporary buffer
788 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
790 struct convert_dir_context
*p
;
794 p
= (struct convert_dir_context
*)private;
796 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
797 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
798 dp
= (struct direct
*)(p
->buf
+ p
->prev_offset
);
799 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
800 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
803 dp
= (struct direct
*)(p
->buf
+ p
->offset
);
804 dp
->d_ino
= dirent
->inode
;
805 dp
->d_reclen
= reclen
;
807 dp
->d_namlen
= dirent
->name_len
& 0xFF;
808 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
809 dp
->d_name
[dp
->d_namlen
] = '\0';
810 p
->prev_offset
= p
->offset
;
819 * Dumps a directory to tape after converting it to the BSD format
822 dumpdirino(struct dinode
*dp
, ino_t ino
)
826 struct old_bsd_inode obi
;
827 struct convert_dir_context cdc
;
829 struct ext2_dir_entry
*de
;
834 dumpmap(dumpinomap
, TS_BITS
, ino
);
836 CLRINO(ino
, dumpinomap
);
839 * Convert the directory to the BSD format
841 /* Allocate a buffer for the conversion (twice the size of the
842 ext2fs directory to avoid problems ;-) */
843 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
845 err(1, "Cannot allocate buffer to convert directory #%lu\n",
849 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
850 /* Do the conversion */
851 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
853 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
856 /* Fix the last entry */
857 if ((cdc
.offset
% cdc
.bs
) != 0) {
858 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
859 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
860 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
863 dir_size
= cdc
.offset
;
866 memset(&obi
, 0, sizeof(obi
));
867 obi
.di_mode
= dp
->di_mode
;
868 obi
.di_uid
= dp
->di_uid
;
869 obi
.di_gid
= dp
->di_gid
;
870 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
871 obi
.di_atime
= dp
->di_atime
;
872 obi
.di_mtime
= dp
->di_mtime
;
873 obi
.di_ctime
= dp
->di_ctime
;
874 obi
.di_nlink
= dp
->di_nlink
;
875 obi
.di_blocks
= dp
->di_blocks
;
876 obi
.di_flags
= dp
->di_flags
;
877 obi
.di_gen
= dp
->di_gen
;
878 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
879 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
880 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
881 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
882 #else /* __linux__ */
884 #endif /* __linux__ */
885 spcl
.c_type
= TS_INODE
;
887 switch (dp
->di_mode
& S_IFMT
) {
898 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
903 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
904 dp
->di_mode
& IFMT
, ino
);
907 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
911 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
913 spcl
.c_type
= TS_ADDR
;
918 #endif /* __linux__ */
922 * Read indirect blocks, and pass the data blocks to be dumped.
925 dmpindir(ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
932 daddr_t idblk
[MAXNINDIR
];
935 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
938 * My RedHat 4.0 system doesn't have these flags; I haven't
939 * upgraded e2fsprogs yet
941 #if defined(EXT2_FLAG_SWAP_BYTES)
942 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
943 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
)) {
945 max
= sblock
->fs_bsize
>> 2;
946 swapme
= (blk_t
*) idblk
;
947 for (i
= 0; i
< max
; i
++, swapme
++)
948 *swapme
= swab32(*swapme
);
949 #if defined(EXT2_FLAG_SWAP_BYTES)
954 memset(idblk
, 0, (int)sblock
->fs_bsize
);
955 if (ind_level
<= 0) {
956 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
957 cnt
= howmany(*size
, sblock
->fs_fsize
);
960 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
962 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
964 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
965 blksout(&idblk
[0], cnt
, ino
);
969 for (i
= 0; i
< NINDIR(sblock
); i
++) {
970 dmpindir(ino
, idblk
[i
], ind_level
, size
);
978 * Collect up the data into tape record sized buffers and output them.
981 blksout(daddr_t
*blkp
, int frags
, ino_t ino
)
983 register daddr_t
*bp
;
984 int i
, j
, count
, blks
, tbperdb
;
986 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
987 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
988 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
989 if (i
+ TP_NINDIR
> blks
)
992 count
= i
+ TP_NINDIR
;
993 for (j
= i
; j
< count
; j
++)
994 if (blkp
[j
/ tbperdb
] != 0)
995 spcl
.c_addr
[j
- i
] = 1;
997 spcl
.c_addr
[j
- i
] = 0;
998 spcl
.c_count
= count
- i
;
1000 bp
= &blkp
[i
/ tbperdb
];
1001 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1003 if (j
+ tbperdb
<= count
)
1004 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1006 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1009 spcl
.c_type
= TS_ADDR
;
1014 * Dump a map to the tape.
1017 dumpmap(char *map
, int type
, ino_t ino
)
1023 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1025 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1030 * Write a header record to the dump tape.
1033 writeheader(ino_t ino
)
1036 register __s32 sum
, cnt
, *lp
;
1038 register int32_t sum
, cnt
, *lp
;
1041 spcl
.c_inumber
= ino
;
1042 spcl
.c_magic
= NFS_MAGIC
;
1043 spcl
.c_checksum
= 0;
1045 lp
= (__s32
*)&spcl
;
1047 lp
= (int32_t *)&spcl
;
1051 cnt
= sizeof(union u_spcl
) / (4 * sizeof(__s32
));
1053 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1055 while (--cnt
>= 0) {
1061 spcl
.c_checksum
= CHECKSUM
- sum
;
1062 writerec((char *)&spcl
, 1);
1069 static struct dinode dinode
;
1072 ext2fs_read_inode(fs
, inum
, (struct ext2_inode
*) &dinode
);
1075 #else /* __linux__ */
1079 static daddr_t minino
, maxino
;
1080 static struct dinode inoblock
[MAXINOPB
];
1083 if (inum
>= minino
&& inum
< maxino
)
1084 return (&inoblock
[inum
- minino
]);
1085 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1086 (int)sblock
->fs_bsize
);
1087 minino
= inum
- (inum
% INOPB(sblock
));
1088 maxino
= minino
+ INOPB(sblock
);
1089 return (&inoblock
[inum
- minino
]);
1091 #endif /* __linux__ */
1094 * Read a chunk of data from the disk.
1095 * Try to recover from hard errors by reading in sector sized pieces.
1096 * Error recovery is attempted at most BREADEMAX times before seeking
1097 * consent from the operator to continue.
1099 int breaderrors
= 0;
1100 #define BREADEMAX 32
1103 bread(daddr_t blkno
, char *buf
, int size
)
1110 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1111 (((ext2_loff_t
)blkno
) << dev_bshift
))
1113 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1114 ((off_t
)blkno
<< dev_bshift
))
1116 msg("bread: lseek fails\n");
1117 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1119 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1121 * Trying to read the final fragment.
1123 * NB - dump only works in TP_BSIZE blocks, hence
1124 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1125 * It should be smarter about not actually trying to
1126 * read more than it can get, but for the time being
1127 * we punt and scale back the read only when it gets
1128 * us into trouble. (mkm 9/25/83)
1134 msg("read error from %s: %s: [block %d]: count=%d\n",
1135 disk
, strerror(errno
), blkno
, size
);
1137 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1138 disk
, blkno
, size
, cnt
);
1139 if (++breaderrors
> BREADEMAX
) {
1140 msg("More than %d block read errors from %d\n",
1142 broadcast("DUMP IS AILING!\n");
1143 msg("This is an unrecoverable error.\n");
1144 if (!query("Do you want to attempt to continue?")){
1151 * Zero buffer, then try to read each sector of buffer separately.
1153 memset(buf
, 0, size
);
1154 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1156 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1157 (((ext2_loff_t
)blkno
) << dev_bshift
))
1159 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1160 ((off_t
)blkno
<< dev_bshift
))
1162 msg("bread: lseek2 fails!\n");
1163 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1166 msg("read error from %s: %s: [sector %d]: count=%d\n",
1167 disk
, strerror(errno
), blkno
, dev_bsize
);
1170 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1171 disk
, blkno
, dev_bsize
, cnt
);