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 1.18 2000/05/28 18:16:42 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
);
115 #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)
117 s
= (struct ext2fs_sb
*) (*fs
)->super
;
118 if ((s
->s_feature_compat
& ~EXT2_LIB_FEATURE_COMPAT_SUPP
) ||
119 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
120 (s
->s_feature_incompat
& ~(EXT3_FEATURE_INCOMPAT_RECOVER
| EXT2_LIB_FEATURE_INCOMPAT_SUPP
))) {
122 (s
->s_feature_incompat
& ~EXT2_LIB_FEATURE_INCOMPAT_SUPP
)) {
124 retval
= EXT2_ET_UNSUPP_FEATURE
;
126 else if (s
->s_feature_ro_compat
& ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP
) {
127 retval
= EXT2_ET_RO_UNSUPP_FEATURE
;
130 #endif /* defined && defined && defined... */
135 * This is an estimation of the number of TP_BSIZE blocks in the file.
136 * It estimates the number of blocks in files with holes by assuming
137 * that all of the blocks accounted for by di_blocks are data blocks
138 * (when some of the blocks are usually used for indirect pointers);
139 * hence the estimate may be high.
142 blockest(struct dinode
*dp
)
144 long blkest
, sizeest
;
147 * dp->di_size is the size of the file in bytes.
148 * dp->di_blocks stores the number of sectors actually in the file.
149 * If there are more sectors than the size would indicate, this just
150 * means that there are indirect blocks in the file or unused
151 * sectors in the last file block; we can safely ignore these
152 * (blkest = sizeest below).
153 * If the file is bigger than the number of sectors would indicate,
154 * then the file has holes in it. In this case we must use the
155 * block count to estimate the number of data blocks used, but
156 * we use the actual size for estimating the number of indirect
157 * dump blocks (sizeest vs. blkest in the indirect block
160 blkest
= howmany(dbtob(dp
->di_blocks
), TP_BSIZE
);
161 sizeest
= howmany(dp
->di_size
, TP_BSIZE
);
162 if (blkest
> sizeest
)
165 if (dp
->di_size
> fs
->blocksize
* NDADDR
) {
166 /* calculate the number of indirect blocks on the dump tape */
168 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
169 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
172 if (dp
->di_size
> sblock
->fs_bsize
* NDADDR
) {
173 /* calculate the number of indirect blocks on the dump tape */
175 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
182 /* Auxiliary macro to pick up files changed since previous dump. */
183 #define CHANGEDSINCE(dp, t) \
184 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
186 /* The WANTTODUMP macro decides whether a file should be dumped. */
188 #define WANTTODUMP(dp) \
189 (CHANGEDSINCE(dp, spcl.c_ddate) && \
190 (nonodump || ((dp)->di_flags & UF_NODUMP) != UF_NODUMP))
192 #define WANTTODUMP(dp) CHANGEDSINCE(dp, spcl.c_ddate)
195 extern ino_t iexclude_list
[IEXCLUDE_MAXNUM
]; /* the inode exclude list */
196 extern int iexclude_num
; /* number of elements in the list */
199 * Determine if given inode should be dumped
202 mapfileino(ino_t ino
, long *tapesize
, int *dirskipped
)
205 register struct dinode
*dp
;
208 * Skip inode if we've already marked it for dumping
210 if (TSTINO(ino
, usedinomap
))
213 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
216 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
220 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
221 * used map. All inode but dirs who have the nodump attribute go
224 SETINO(ino
, usedinomap
);
227 if(iexclude_num
) { /* if there are inodes in the exclude list */
228 int idx
; /* then check this inode against it */
229 for (idx
=0; idx
<iexclude_num
; idx
++) {
230 if (ino
== iexclude_list
[idx
]) {
231 msg("Excluding inode number %d\n", ino
);
232 return; /* if in list then skip */
238 SETINO(ino
, dumpdirmap
);
239 if (WANTTODUMP(dp
)) {
240 SETINO(ino
, dumpinomap
);
241 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
244 *tapesize
+= blockest(dp
);
249 if (!nonodump
&& (dp
->di_flags
& UF_NODUMP
))
250 CLRINO(ino
, usedinomap
);
259 * Walk the inode list for a filesystem to find all allocated inodes
260 * that have been modified since the previous dump time. Also, find all
261 * the directories in the filesystem.
264 mapfiles(ino_t maxino
, long *tapesize
)
267 int anydirskipped
= 0;
269 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
270 mapfileino(ino
, tapesize
, &anydirskipped
);
273 * Restore gets very upset if the root is not dumped,
274 * so ensure that it always is dumped.
276 SETINO(ROOTINO
, dumpinomap
);
277 return (anydirskipped
);
281 struct mapfile_context
{
287 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
289 register struct dinode
*dp
;
292 struct mapfile_context
*mfc
;
296 mfc
= (struct mapfile_context
*)private;
298 mapfileino(dirent
->inode
, mfc
->tapesize
, mfc
->anydirskipped
);
300 dp
= getino(dirent
->inode
);
301 mode
= dp
->di_mode
& IFMT
;
302 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
303 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
304 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
305 ( dirent
->name_len
& 0xFF ) != 2)) {
306 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
307 mapfilesindir
, private);
318 * Walk the inode list for a filesystem to find all allocated inodes
319 * that have been modified since the previous dump time. Also, find all
320 * the directories in the filesystem.
323 mapfilesfromdir(ino_t maxino
, long *tapesize
, char *directory
)
326 struct mapfile_context mfc
;
328 char dir_name
[MAXPATHLEN
];
329 int i
, anydirskipped
= 0;
332 * Mark every directory in the path as being dumped
334 for (i
= 0; i
< strlen (directory
); i
++) {
335 if (directory
[i
] == '/') {
336 strncpy (dir_name
, directory
, i
);
338 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
341 com_err(disk
, retval
, "while translating %s",
345 mapfileino(dir_ino
, tapesize
, &anydirskipped
);
349 * Mark the final directory
351 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
353 com_err(disk
, retval
, "while translating %s", directory
);
356 mapfileino(dir_ino
, tapesize
, &anydirskipped
);
358 mfc
.tapesize
= tapesize
;
359 mfc
.anydirskipped
= &anydirskipped
;
360 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
364 com_err(disk
, retval
, "while mapping files in %s", directory
);
368 * Ensure that the root inode actually appears in the file list
371 mapfileino(ROOTINO
, tapesize
, &anydirskipped
);
373 * Restore gets very upset if the root is not dumped,
374 * so ensure that it always is dumped.
376 SETINO(ROOTINO
, dumpinomap
);
377 return anydirskipped
;
382 struct mapdirs_context
{
392 * Scan each directory on the filesystem to see if it has any modified
393 * files in it. If it does, and has not already been added to the dump
394 * list (because it was itself modified), then add it. If a directory
395 * has not been modified itself, contains no modified files and has no
396 * subdirectories, then it can be deleted from the dump list and from
397 * the list of directories. By deleting it from the list of directories,
398 * its parent may now qualify for the same treatment on this or a later
399 * pass using this algorithm.
402 mapdirs(ino_t maxino
, long *tapesize
)
404 register struct dinode
*dp
;
412 struct mapdirs_context mdc
;
414 int ret
, change
= 0, nodump
;
416 isdir
= 0; /* XXX just to get gcc to shut up */
417 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
418 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
423 * If dir has been removed from the used map, it's either
424 * because it had the nodump flag, or it herited it from
425 * its parent. A directory can't be in dumpinomap if not
426 * in usedinomap, but we have to go through it anyway
427 * to propagate the nodump attribute.
429 nodump
= (TSTINO(ino
, usedinomap
) == 0);
430 if ((isdir
& 1) == 0 ||
431 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
438 mdc
.tapesize
= tapesize
;
439 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
440 #else /* __linux__ */
441 filesize
= dp
->di_size
;
442 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
443 if (dp
->di_db
[i
] != 0)
444 ret
|= searchdir(ino
, dp
->di_db
[i
],
445 (long)dblksize(sblock
, dp
, i
),
447 if (ret
& HASDUMPEDFILE
)
450 filesize
-= sblock
->fs_bsize
;
452 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
453 if (dp
->di_ib
[i
] == 0)
455 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
457 #endif /* __linux__ */
458 if (ret
& HASDUMPEDFILE
) {
459 SETINO(ino
, dumpinomap
);
460 *tapesize
+= blockest(dp
);
465 if (ret
& HASSUBDIRS
)
466 change
= 1; /* subdirs have inherited nodump */
467 CLRINO(ino
, dumpdirmap
);
468 } else if ((ret
& HASSUBDIRS
) == 0) {
469 if (!TSTINO(ino
, dumpinomap
)) {
470 CLRINO(ino
, dumpdirmap
);
480 * Read indirect blocks, and pass the data blocks to be searched
481 * as directories. Quit as soon as any entry is found that will
482 * require the directory to be dumped.
485 dirindir(ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
489 daddr_t idblk
[MAXNINDIR
];
491 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
492 if (ind_level
<= 0) {
493 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
496 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
498 if (ret
& HASDUMPEDFILE
)
501 *filesize
-= sblock
->fs_bsize
;
506 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
509 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
513 #endif /* !__linux__ */
516 * Scan a disk block containing directory information looking to see if
517 * any of the entries are on the dump list and to see if the directory
518 * contains any subdirectories.
522 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
524 struct mapdirs_context
*mdc
;
529 mdc
= (struct mapdirs_context
*)private;
531 tapesize
= mdc
->tapesize
;
535 if (dp
->name
[0] == '.') {
536 if (( dp
->name_len
& 0xFF ) == 1)
538 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
542 ip
= getino(dp
->inode
);
543 if (TSTINO(dp
->inode
, dumpinomap
)) {
544 CLRINO(dp
->inode
, dumpinomap
);
545 CLRINO(dp
->inode
, usedinomap
);
546 *tapesize
-= blockest(ip
);
548 /* Add dir back to the dir map, to propagate nodump */
549 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
550 SETINO(dp
->inode
, dumpdirmap
);
554 if (TSTINO(dp
->inode
, dumpinomap
)) {
555 *ret
|= HASDUMPEDFILE
;
556 if (*ret
& HASSUBDIRS
)
559 if (TSTINO(dp
->inode
, dumpdirmap
)) {
561 if (*ret
& HASDUMPEDFILE
)
568 #else /* __linux__ */
571 searchdir(ino_t ino
, daddr_t blkno
, long size
, long filesize
)
573 register struct direct
*dp
;
574 register long loc
, ret
= 0;
577 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
580 for (loc
= 0; loc
< size
; ) {
581 dp
= (struct direct
*)(dblk
+ loc
);
582 if (dp
->d_reclen
== 0) {
583 msg("corrupted directory, inumber %d\n", ino
);
589 if (dp
->d_name
[0] == '.') {
590 if (dp
->d_name
[1] == '\0')
592 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
595 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
596 ret
|= HASDUMPEDFILE
;
597 if (ret
& HASSUBDIRS
)
600 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
602 if (ret
& HASDUMPEDFILE
)
608 #endif /* __linux__ */
612 struct block_context
{
621 * Dump a block to the tape
624 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, int blockcnt
, void *private)
626 struct block_context
*p
;
629 if (blockcnt
< NDADDR
)
631 p
= (struct block_context
*)private;
632 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
633 p
->buf
[p
->cnt
++] = 0;
634 if (p
->cnt
== p
->max
) {
635 blksout (p
->buf
, p
->cnt
, p
->ino
);
639 p
->buf
[p
->cnt
++] = *blocknr
;
640 if (p
->cnt
== p
->max
) {
641 blksout (p
->buf
, p
->cnt
, p
->ino
);
644 p
->next_block
= blockcnt
+ 1;
650 * Dump passes 3 and 4.
652 * Dump the contents of an inode to tape.
655 dumpino(struct dinode
*dp
, ino_t ino
)
660 struct old_bsd_inode obi
;
662 struct block_context bc
;
669 dumpmap(dumpinomap
, TS_BITS
, ino
);
671 CLRINO(ino
, dumpinomap
);
673 memset(&obi
, 0, sizeof(obi
));
674 obi
.di_mode
= dp
->di_mode
;
675 obi
.di_uid
= dp
->di_uid
;
676 obi
.di_gid
= dp
->di_gid
;
677 obi
.di_qsize
.v
= (u_quad_t
)dp
->di_size
;
678 obi
.di_atime
= dp
->di_atime
;
679 obi
.di_mtime
= dp
->di_mtime
;
680 obi
.di_ctime
= dp
->di_ctime
;
681 obi
.di_nlink
= dp
->di_nlink
;
682 obi
.di_blocks
= dp
->di_blocks
;
683 obi
.di_flags
= dp
->di_flags
;
684 obi
.di_gen
= dp
->di_gen
;
685 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
686 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
687 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
688 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
689 #else /* __linux__ */
691 #endif /* __linux__ */
692 spcl
.c_type
= TS_INODE
;
694 switch (dp
->di_mode
& S_IFMT
) {
704 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
710 * Check for short symbolic link.
713 if (dp
->di_size
> 0 &&
714 dp
->di_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
718 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
719 buf
[dp
->di_size
] = '\0';
723 #endif /* __linux__ */
725 if (dp
->di_size
> 0 &&
726 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
730 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
731 buf
[dp
->di_size
] = '\0';
754 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
757 if (dp
->di_size
> NDADDR
* sblock
->fs_bsize
)
759 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
761 cnt
= NDADDR
* sblock
->fs_frag
;
764 cnt
= howmany(dp
->di_size
, sblock
->fs_fsize
);
765 blksout(&dp
->di_db
[0], cnt
, ino
);
766 if ((size
= dp
->di_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
769 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
770 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
773 bc
.next_block
= NDADDR
;
775 ext2fs_block_iterate (fs
, ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
777 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
781 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
782 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
791 struct convert_dir_context
{
799 * This function converts an ext2fs directory entry to the BSD format.
801 * Basically, it adds a null-character at the end of the name, recomputes the
802 * size of the entry, and creates it in a temporary buffer
805 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
807 struct convert_dir_context
*p
;
808 struct olddirect
*dp
;
811 p
= (struct convert_dir_context
*)private;
813 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
814 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
815 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
816 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
817 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
820 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
821 dp
->d_ino
= dirent
->inode
;
822 dp
->d_reclen
= reclen
;
823 dp
->d_namlen
= dirent
->name_len
& 0xFF;
824 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
825 dp
->d_name
[dp
->d_namlen
] = '\0';
826 p
->prev_offset
= p
->offset
;
835 * Dumps a directory to tape after converting it to the BSD format
838 dumpdirino(struct dinode
*dp
, ino_t ino
)
842 struct old_bsd_inode obi
;
843 struct convert_dir_context cdc
;
845 struct ext2_dir_entry
*de
;
850 dumpmap(dumpinomap
, TS_BITS
, ino
);
852 CLRINO(ino
, dumpinomap
);
855 * Convert the directory to the BSD format
857 /* Allocate a buffer for the conversion (twice the size of the
858 ext2fs directory to avoid problems ;-) */
859 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
861 err(1, "Cannot allocate buffer to convert directory #%lu\n",
865 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
866 /* Do the conversion */
867 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
869 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
872 /* Fix the last entry */
873 if ((cdc
.offset
% cdc
.bs
) != 0) {
874 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
875 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
876 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
879 dir_size
= cdc
.offset
;
882 memset(&obi
, 0, sizeof(obi
));
883 obi
.di_mode
= dp
->di_mode
;
884 obi
.di_uid
= dp
->di_uid
;
885 obi
.di_gid
= dp
->di_gid
;
886 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
887 obi
.di_atime
= dp
->di_atime
;
888 obi
.di_mtime
= dp
->di_mtime
;
889 obi
.di_ctime
= dp
->di_ctime
;
890 obi
.di_nlink
= dp
->di_nlink
;
891 obi
.di_blocks
= dp
->di_blocks
;
892 obi
.di_flags
= dp
->di_flags
;
893 obi
.di_gen
= dp
->di_gen
;
894 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
895 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
896 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
897 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
898 #else /* __linux__ */
900 #endif /* __linux__ */
901 spcl
.c_type
= TS_INODE
;
903 switch (dp
->di_mode
& S_IFMT
) {
914 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
919 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
920 dp
->di_mode
& IFMT
, ino
);
923 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
927 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
929 spcl
.c_type
= TS_ADDR
;
934 #endif /* __linux__ */
938 * Read indirect blocks, and pass the data blocks to be dumped.
941 dmpindir(ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
948 daddr_t idblk
[MAXNINDIR
];
951 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
954 * My RedHat 4.0 system doesn't have these flags; I haven't
955 * upgraded e2fsprogs yet
957 #if defined(EXT2_FLAG_SWAP_BYTES)
958 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
959 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
)) {
961 max
= sblock
->fs_bsize
>> 2;
962 swapme
= (blk_t
*) idblk
;
963 for (i
= 0; i
< max
; i
++, swapme
++)
964 *swapme
= swab32(*swapme
);
965 #if defined(EXT2_FLAG_SWAP_BYTES)
970 memset(idblk
, 0, (int)sblock
->fs_bsize
);
971 if (ind_level
<= 0) {
972 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
973 cnt
= howmany(*size
, sblock
->fs_fsize
);
976 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
978 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
980 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
981 blksout(&idblk
[0], cnt
, ino
);
985 for (i
= 0; i
< NINDIR(sblock
); i
++) {
986 dmpindir(ino
, idblk
[i
], ind_level
, size
);
994 * Collect up the data into tape record sized buffers and output them.
997 blksout(daddr_t
*blkp
, int frags
, ino_t ino
)
999 register daddr_t
*bp
;
1000 int i
, j
, count
, blks
, tbperdb
;
1002 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1003 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1004 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1005 if (i
+ TP_NINDIR
> blks
)
1008 count
= i
+ TP_NINDIR
;
1009 for (j
= i
; j
< count
; j
++)
1010 if (blkp
[j
/ tbperdb
] != 0)
1011 spcl
.c_addr
[j
- i
] = 1;
1013 spcl
.c_addr
[j
- i
] = 0;
1014 spcl
.c_count
= count
- i
;
1016 bp
= &blkp
[i
/ tbperdb
];
1017 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1019 if (j
+ tbperdb
<= count
)
1020 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1022 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1025 spcl
.c_type
= TS_ADDR
;
1030 * Dump a map to the tape.
1033 dumpmap(char *map
, int type
, ino_t ino
)
1039 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1041 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1046 * Write a header record to the dump tape.
1049 writeheader(ino_t ino
)
1052 register __s32 sum
, cnt
, *lp
;
1054 register int32_t sum
, cnt
, *lp
;
1057 spcl
.c_inumber
= ino
;
1058 spcl
.c_magic
= NFS_MAGIC
;
1059 spcl
.c_checksum
= 0;
1061 lp
= (__s32
*)&spcl
;
1063 lp
= (int32_t *)&spcl
;
1067 cnt
= sizeof(union u_spcl
) / (4 * sizeof(__s32
));
1069 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1071 while (--cnt
>= 0) {
1077 spcl
.c_checksum
= CHECKSUM
- sum
;
1078 writerec((char *)&spcl
, 1);
1085 static struct dinode dinode
;
1088 ext2fs_read_inode(fs
, inum
, (struct ext2_inode
*) &dinode
);
1091 #else /* __linux__ */
1095 static daddr_t minino
, maxino
;
1096 static struct dinode inoblock
[MAXINOPB
];
1099 if (inum
>= minino
&& inum
< maxino
)
1100 return (&inoblock
[inum
- minino
]);
1101 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1102 (int)sblock
->fs_bsize
);
1103 minino
= inum
- (inum
% INOPB(sblock
));
1104 maxino
= minino
+ INOPB(sblock
);
1105 return (&inoblock
[inum
- minino
]);
1107 #endif /* __linux__ */
1110 * Read a chunk of data from the disk.
1111 * Try to recover from hard errors by reading in sector sized pieces.
1112 * Error recovery is attempted at most BREADEMAX times before seeking
1113 * consent from the operator to continue.
1115 int breaderrors
= 0;
1116 #define BREADEMAX 32
1119 bread(daddr_t blkno
, char *buf
, int size
)
1126 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1127 (((ext2_loff_t
)blkno
) << dev_bshift
))
1129 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1130 ((off_t
)blkno
<< dev_bshift
))
1132 msg("bread: lseek fails\n");
1133 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1135 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1137 * Trying to read the final fragment.
1139 * NB - dump only works in TP_BSIZE blocks, hence
1140 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1141 * It should be smarter about not actually trying to
1142 * read more than it can get, but for the time being
1143 * we punt and scale back the read only when it gets
1144 * us into trouble. (mkm 9/25/83)
1150 msg("read error from %s: %s: [block %d]: count=%d\n",
1151 disk
, strerror(errno
), blkno
, size
);
1153 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1154 disk
, blkno
, size
, cnt
);
1155 if (++breaderrors
> BREADEMAX
) {
1156 msg("More than %d block read errors from %d\n",
1158 broadcast("DUMP IS AILING!\n");
1159 msg("This is an unrecoverable error.\n");
1160 if (!query("Do you want to attempt to continue?")){
1167 * Zero buffer, then try to read each sector of buffer separately.
1169 memset(buf
, 0, size
);
1170 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1172 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1173 (((ext2_loff_t
)blkno
) << dev_bshift
))
1175 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1176 ((off_t
)blkno
<< dev_bshift
))
1178 msg("bread: lseek2 fails!\n");
1179 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1182 msg("read error from %s: %s: [sector %d]: count=%d\n",
1183 disk
, strerror(errno
), blkno
, dev_bsize
);
1186 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1187 disk
, blkno
, dev_bsize
, cnt
);