2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
10 * Copyright (c) 1980, 1988, 1991, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid
[] =
44 "$Id: traverse.c,v 1.24 2000/12/05 16:57:38 stelian Exp $";
47 #include <sys/param.h>
50 #include <linux/ext2_fs.h>
51 #include <bsdcompat.h>
52 #include <compaterr.h>
54 #define swab32(x) ext2fs_swab32(x)
58 #include <sys/vnode.h>
61 #include <ufs/fsdir.h>
62 #include <ufs/inode.h>
64 #include <ufs/ufs/dir.h>
65 #include <ufs/ufs/dinode.h>
66 #include <ufs/ffs/fs.h>
68 #endif /* __linux__ */
70 #include <protocols/dumprestore.h>
80 #include <ext2fs/ext2fs.h>
85 #define HASDUMPEDFILE 0x1
86 #define HASSUBDIRS 0x2
89 typedef u_quad_t fsizeT
;
92 typedef quad_t fsizeT
;
99 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
100 int blocksize
, char *buf
, void *private));
102 static int dirindir
__P((ino_t ino
, daddr_t blkno
, int level
, long *size
));
103 static void dmpindir
__P((ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
104 static int searchdir
__P((ino_t ino
, daddr_t blkno
, long size
, long filesize
));
106 static void mapfileino
__P((ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
));
107 static int exclude_ino
__P((ino_t ino
));
109 /* #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 */
110 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
111 #define FORCE_OPEN EXT2_FLAG_FORCE
116 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
121 retval
= ext2fs_open(disk
, FORCE_OPEN
, 0, 0, unix_io_manager
, fs
);
122 #if defined(EXT2_LIB_FEATURE_COMPAT_SUPP) && defined(EXT2_LIB_FEATURE_INCOMPAT_SUPP) && defined(EXT2_LIB_FEATURE_RO_COMPAT_SUPP) && defined(EXT2_ET_UNSUPP_FEATURE) && defined(EXT2_ET_RO_UNSUPP_FEATURE)
124 s
= (struct ext2fs_sb
*) (*fs
)->super
;
125 if ((s
->s_feature_compat
& ~EXT2_LIB_FEATURE_COMPAT_SUPP
) ||
126 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
127 (s
->s_feature_incompat
& ~(EXT3_FEATURE_INCOMPAT_RECOVER
| EXT2_LIB_FEATURE_INCOMPAT_SUPP
))) {
129 (s
->s_feature_incompat
& ~EXT2_LIB_FEATURE_INCOMPAT_SUPP
)) {
131 retval
= EXT2_ET_UNSUPP_FEATURE
;
133 else if (s
->s_feature_ro_compat
& ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP
) {
134 retval
= EXT2_ET_RO_UNSUPP_FEATURE
;
137 #endif /* defined && defined && defined... */
142 * This is an estimation of the number of TP_BSIZE blocks in the file.
143 * It estimates the number of blocks in files with holes by assuming
144 * that all of the blocks accounted for by di_blocks are data blocks
145 * (when some of the blocks are usually used for indirect pointers);
146 * hence the estimate may be high.
149 blockest(struct dinode
const *dp
)
151 long blkest
, sizeest
;
154 * dp->di_size is the size of the file in bytes.
155 * dp->di_blocks stores the number of sectors actually in the file.
156 * If there are more sectors than the size would indicate, this just
157 * means that there are indirect blocks in the file or unused
158 * sectors in the last file block; we can safely ignore these
159 * (blkest = sizeest below).
160 * If the file is bigger than the number of sectors would indicate,
161 * then the file has holes in it. In this case we must use the
162 * block count to estimate the number of data blocks used, but
163 * we use the actual size for estimating the number of indirect
164 * dump blocks (sizeest vs. blkest in the indirect block
167 blkest
= howmany(dbtob(dp
->di_blocks
), TP_BSIZE
);
168 sizeest
= howmany(dp
->di_size
, TP_BSIZE
);
169 if (blkest
> sizeest
)
172 if (dp
->di_size
> fs
->blocksize
* NDADDR
) {
173 /* calculate the number of indirect blocks on the dump tape */
175 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
176 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
179 if (dp
->di_size
> sblock
->fs_bsize
* NDADDR
) {
180 /* calculate the number of indirect blocks on the dump tape */
182 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
189 extern ino_t iexclude_list
[IEXCLUDE_MAXNUM
]; /* the inode exclude list */
190 extern int iexclude_num
; /* number of elements in the list */
193 * This tests whether an inode is in the exclude list
196 exclude_ino(ino_t ino
)
199 if (iexclude_num
) { /* if there are inodes in the exclude list */
200 int idx
; /* then check this inode against it */
201 for (idx
= 0; idx
< iexclude_num
; idx
++)
202 if (ino
== iexclude_list
[idx
])
208 /* Auxiliary macro to pick up files changed since previous dump. */
209 #define CHANGEDSINCE(dp, t) \
210 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
212 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
214 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
216 #define NODUMP_FLAG(dp) 0
219 /* The WANTTODUMP macro decides whether a file should be dumped. */
220 #define WANTTODUMP(dp, ino) \
221 (CHANGEDSINCE(dp, spcl.c_ddate) && \
222 (!NODUMP_FLAG(dp)) && \
226 * Determine if given inode should be dumped. "dp" must either point to a
227 * copy of the given inode, or be NULL (in which case it is fetched.)
230 mapfileino(ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
235 * Skip inode if we've already marked it for dumping
237 if (TSTINO(ino
, usedinomap
))
241 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
244 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
248 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
249 * used map. All inode but dirs who have the nodump attribute go
252 SETINO(ino
, usedinomap
);
255 SETINO(ino
, dumpdirmap
);
256 if (WANTTODUMP(dp
, ino
)) {
257 SETINO(ino
, dumpinomap
);
258 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
261 *tapesize
+= blockest(dp
);
265 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
266 CLRINO(ino
, usedinomap
);
274 * Walk the inode list for a filesystem to find all allocated inodes
275 * that have been modified since the previous dump time. Also, find all
276 * the directories in the filesystem.
280 mapfiles(ino_t maxino
, long *tapesize
)
283 int anydirskipped
= 0;
284 ext2_inode_scan scan
;
286 struct ext2_inode inode
;
289 * We use libext2fs's inode scanning routines, which are particularly
290 * robust. (Note that getino cannot return an error.)
292 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
294 com_err(disk
, err
, "while opening inodes\n");
298 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
299 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
302 com_err(disk
, err
, "while scanning inode #%ld\n",
310 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
313 ext2fs_close_inode_scan(scan
);
316 * Restore gets very upset if the root is not dumped,
317 * so ensure that it always is dumped.
319 SETINO(ROOTINO
, dumpinomap
);
320 return (anydirskipped
);
324 mapfiles(ino_t maxino
, long *tapesize
)
327 int anydirskipped
= 0;
329 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
330 mapfileino(ino
, tapesize
, &anydirskipped
);
333 * Restore gets very upset if the root is not dumped,
334 * so ensure that it always is dumped.
336 SETINO(ROOTINO
, dumpinomap
);
337 return (anydirskipped
);
339 #endif /* __linux__ */
342 struct mapfile_context
{
348 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
350 register struct dinode
const *dp
;
353 struct mapfile_context
*mfc
;
357 mfc
= (struct mapfile_context
*)private;
358 dp
= getino(dirent
->inode
);
360 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
362 mode
= dp
->di_mode
& IFMT
;
363 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
364 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
365 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
366 ( dirent
->name_len
& 0xFF ) != 2)) {
367 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
368 mapfilesindir
, private);
379 * Walk the inode list for a filesystem to find all allocated inodes
380 * that have been modified since the previous dump time. Also, find all
381 * the directories in the filesystem.
384 mapfilesfromdir(ino_t maxino
, long *tapesize
, char *directory
)
387 struct mapfile_context mfc
;
389 char dir_name
[MAXPATHLEN
];
390 int i
, anydirskipped
= 0;
393 * Mark every directory in the path as being dumped
395 for (i
= 0; i
< strlen (directory
); i
++) {
396 if (directory
[i
] == '/') {
397 strncpy (dir_name
, directory
, i
);
399 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
402 com_err(disk
, retval
, "while translating %s",
406 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
410 * Mark the final directory
412 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
414 com_err(disk
, retval
, "while translating %s", directory
);
417 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
419 mfc
.tapesize
= tapesize
;
420 mfc
.anydirskipped
= &anydirskipped
;
421 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
425 com_err(disk
, retval
, "while mapping files in %s", directory
);
429 * Ensure that the root inode actually appears in the file list
432 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
434 * Restore gets very upset if the root is not dumped,
435 * so ensure that it always is dumped.
437 SETINO(ROOTINO
, dumpinomap
);
438 return anydirskipped
;
443 struct mapdirs_context
{
453 * Scan each directory on the filesystem to see if it has any modified
454 * files in it. If it does, and has not already been added to the dump
455 * list (because it was itself modified), then add it. If a directory
456 * has not been modified itself, contains no modified files and has no
457 * subdirectories, then it can be deleted from the dump list and from
458 * the list of directories. By deleting it from the list of directories,
459 * its parent may now qualify for the same treatment on this or a later
460 * pass using this algorithm.
463 mapdirs(ino_t maxino
, long *tapesize
)
465 register struct dinode
*dp
;
473 struct mapdirs_context mdc
;
475 int ret
, change
= 0, nodump
;
477 isdir
= 0; /* XXX just to get gcc to shut up */
478 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
479 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
484 * If dir has been removed from the used map, it's either
485 * because it had the nodump flag, or it herited it from
486 * its parent. A directory can't be in dumpinomap if not
487 * in usedinomap, but we have to go through it anyway
488 * to propagate the nodump attribute.
490 nodump
= (TSTINO(ino
, usedinomap
) == 0);
491 if ((isdir
& 1) == 0 ||
492 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
499 mdc
.tapesize
= tapesize
;
500 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
501 #else /* __linux__ */
502 filesize
= dp
->di_size
;
503 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
504 if (dp
->di_db
[i
] != 0)
505 ret
|= searchdir(ino
, dp
->di_db
[i
],
506 (long)dblksize(sblock
, dp
, i
),
508 if (ret
& HASDUMPEDFILE
)
511 filesize
-= sblock
->fs_bsize
;
513 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
514 if (dp
->di_ib
[i
] == 0)
516 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
518 #endif /* __linux__ */
519 if (ret
& HASDUMPEDFILE
) {
520 SETINO(ino
, dumpinomap
);
521 *tapesize
+= blockest(dp
);
526 if (ret
& HASSUBDIRS
)
527 change
= 1; /* subdirs have inherited nodump */
528 CLRINO(ino
, dumpdirmap
);
529 } else if ((ret
& HASSUBDIRS
) == 0) {
530 if (!TSTINO(ino
, dumpinomap
)) {
531 CLRINO(ino
, dumpdirmap
);
541 * Read indirect blocks, and pass the data blocks to be searched
542 * as directories. Quit as soon as any entry is found that will
543 * require the directory to be dumped.
546 dirindir(ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
550 daddr_t idblk
[MAXNINDIR
];
552 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
553 if (ind_level
<= 0) {
554 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
557 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
559 if (ret
& HASDUMPEDFILE
)
562 *filesize
-= sblock
->fs_bsize
;
567 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
570 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
574 #endif /* !__linux__ */
577 * Scan a disk block containing directory information looking to see if
578 * any of the entries are on the dump list and to see if the directory
579 * contains any subdirectories.
583 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
585 struct mapdirs_context
*mdc
;
590 mdc
= (struct mapdirs_context
*)private;
592 tapesize
= mdc
->tapesize
;
596 if (dp
->name
[0] == '.') {
597 if (( dp
->name_len
& 0xFF ) == 1)
599 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
603 ip
= getino(dp
->inode
);
604 if (TSTINO(dp
->inode
, dumpinomap
)) {
605 CLRINO(dp
->inode
, dumpinomap
);
606 CLRINO(dp
->inode
, usedinomap
);
607 *tapesize
-= blockest(ip
);
609 /* Add dir back to the dir map, to propagate nodump */
610 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
611 SETINO(dp
->inode
, dumpdirmap
);
615 if (TSTINO(dp
->inode
, dumpinomap
)) {
616 *ret
|= HASDUMPEDFILE
;
617 if (*ret
& HASSUBDIRS
)
620 if (TSTINO(dp
->inode
, dumpdirmap
)) {
622 if (*ret
& HASDUMPEDFILE
)
629 #else /* __linux__ */
632 searchdir(ino_t ino
, daddr_t blkno
, long size
, long filesize
)
634 register struct direct
*dp
;
635 register long loc
, ret
= 0;
638 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
641 for (loc
= 0; loc
< size
; ) {
642 dp
= (struct direct
*)(dblk
+ loc
);
643 if (dp
->d_reclen
== 0) {
644 msg("corrupted directory, inumber %d\n", ino
);
650 if (dp
->d_name
[0] == '.') {
651 if (dp
->d_name
[1] == '\0')
653 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
656 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
657 ret
|= HASDUMPEDFILE
;
658 if (ret
& HASSUBDIRS
)
661 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
663 if (ret
& HASDUMPEDFILE
)
669 #endif /* __linux__ */
673 struct block_context
{
682 * Dump a block to the tape
685 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, int blockcnt
, void *private)
687 struct block_context
*p
;
690 if (blockcnt
< NDADDR
)
692 p
= (struct block_context
*)private;
693 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
694 p
->buf
[p
->cnt
++] = 0;
695 if (p
->cnt
== p
->max
) {
696 blksout (p
->buf
, p
->cnt
, p
->ino
);
700 p
->buf
[p
->cnt
++] = *blocknr
;
701 if (p
->cnt
== p
->max
) {
702 blksout (p
->buf
, p
->cnt
, p
->ino
);
705 p
->next_block
= blockcnt
+ 1;
711 * Dump passes 3 and 4.
713 * Dump the contents of an inode to tape.
716 dumpino(struct dinode
*dp
, ino_t ino
)
721 struct old_bsd_inode obi
;
723 struct block_context bc
;
730 dumpmap(dumpinomap
, TS_BITS
, ino
);
732 CLRINO(ino
, dumpinomap
);
734 memset(&obi
, 0, sizeof(obi
));
735 obi
.di_mode
= dp
->di_mode
;
736 obi
.di_uid
= dp
->di_uid
;
737 obi
.di_gid
= dp
->di_gid
;
738 obi
.di_qsize
.v
= (u_quad_t
)dp
->di_size
;
739 obi
.di_atime
= dp
->di_atime
;
740 obi
.di_mtime
= dp
->di_mtime
;
741 obi
.di_ctime
= dp
->di_ctime
;
742 obi
.di_nlink
= dp
->di_nlink
;
743 obi
.di_blocks
= dp
->di_blocks
;
744 obi
.di_flags
= dp
->di_flags
;
745 obi
.di_gen
= dp
->di_gen
;
746 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
747 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
748 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
749 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
750 #else /* __linux__ */
752 #endif /* __linux__ */
753 spcl
.c_type
= TS_INODE
;
755 switch (dp
->di_mode
& S_IFMT
) {
765 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
771 * Check for short symbolic link.
774 if (dp
->di_size
> 0 &&
775 dp
->di_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
779 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
780 buf
[dp
->di_size
] = '\0';
784 #endif /* __linux__ */
786 if (dp
->di_size
> 0 &&
787 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
791 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
792 buf
[dp
->di_size
] = '\0';
815 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
818 if (dp
->di_size
> NDADDR
* sblock
->fs_bsize
)
820 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
822 cnt
= NDADDR
* sblock
->fs_frag
;
825 cnt
= howmany(dp
->di_size
, sblock
->fs_fsize
);
826 blksout(&dp
->di_db
[0], cnt
, ino
);
827 if ((size
= dp
->di_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
830 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
831 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
834 bc
.next_block
= NDADDR
;
836 ext2fs_block_iterate (fs
, ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
838 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
842 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
843 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
852 struct convert_dir_context
{
860 * This function converts an ext2fs directory entry to the BSD format.
862 * Basically, it adds a null-character at the end of the name, recomputes the
863 * size of the entry, and creates it in a temporary buffer
866 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
868 struct convert_dir_context
*p
;
869 struct olddirect
*dp
;
872 p
= (struct convert_dir_context
*)private;
874 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
875 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
876 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
877 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
878 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
881 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
882 dp
->d_ino
= dirent
->inode
;
883 dp
->d_reclen
= reclen
;
884 dp
->d_namlen
= dirent
->name_len
& 0xFF;
885 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
886 dp
->d_name
[dp
->d_namlen
] = '\0';
887 p
->prev_offset
= p
->offset
;
896 * Dumps a directory to tape after converting it to the BSD format
899 dumpdirino(struct dinode
*dp
, ino_t ino
)
903 struct old_bsd_inode obi
;
904 struct convert_dir_context cdc
;
906 struct ext2_dir_entry
*de
;
911 dumpmap(dumpinomap
, TS_BITS
, ino
);
913 CLRINO(ino
, dumpinomap
);
916 * Convert the directory to the BSD format
918 /* Allocate a buffer for the conversion (twice the size of the
919 ext2fs directory to avoid problems ;-) */
920 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
922 err(1, "Cannot allocate buffer to convert directory #%lu\n",
926 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
927 /* Do the conversion */
928 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
930 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
933 /* Fix the last entry */
934 if ((cdc
.offset
% cdc
.bs
) != 0) {
935 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
936 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
937 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
940 dir_size
= cdc
.offset
;
943 memset(&obi
, 0, sizeof(obi
));
944 obi
.di_mode
= dp
->di_mode
;
945 obi
.di_uid
= dp
->di_uid
;
946 obi
.di_gid
= dp
->di_gid
;
947 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
948 obi
.di_atime
= dp
->di_atime
;
949 obi
.di_mtime
= dp
->di_mtime
;
950 obi
.di_ctime
= dp
->di_ctime
;
951 obi
.di_nlink
= dp
->di_nlink
;
952 obi
.di_blocks
= dp
->di_blocks
;
953 obi
.di_flags
= dp
->di_flags
;
954 obi
.di_gen
= dp
->di_gen
;
955 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
956 if (dp
->di_file_acl
|| dp
->di_dir_acl
)
957 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
958 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
959 #else /* __linux__ */
961 #endif /* __linux__ */
962 spcl
.c_type
= TS_INODE
;
964 switch (dp
->di_mode
& S_IFMT
) {
975 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
980 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
981 dp
->di_mode
& IFMT
, ino
);
984 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
988 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
990 spcl
.c_type
= TS_ADDR
;
995 #endif /* __linux__ */
999 * Read indirect blocks, and pass the data blocks to be dumped.
1002 dmpindir(ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1009 daddr_t idblk
[MAXNINDIR
];
1012 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1015 * My RedHat 4.0 system doesn't have these flags; I haven't
1016 * upgraded e2fsprogs yet
1018 #if defined(EXT2_FLAG_SWAP_BYTES)
1019 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1020 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
)) {
1022 max
= sblock
->fs_bsize
>> 2;
1023 swapme
= (blk_t
*) idblk
;
1024 for (i
= 0; i
< max
; i
++, swapme
++)
1025 *swapme
= swab32(*swapme
);
1026 #if defined(EXT2_FLAG_SWAP_BYTES)
1031 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1032 if (ind_level
<= 0) {
1033 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1034 cnt
= howmany(*size
, sblock
->fs_fsize
);
1037 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1039 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1041 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1042 blksout(&idblk
[0], cnt
, ino
);
1046 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1047 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1055 * Collect up the data into tape record sized buffers and output them.
1058 blksout(daddr_t
*blkp
, int frags
, ino_t ino
)
1060 register daddr_t
*bp
;
1061 int i
, j
, count
, blks
, tbperdb
;
1063 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1064 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1065 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1066 if (i
+ TP_NINDIR
> blks
)
1069 count
= i
+ TP_NINDIR
;
1070 for (j
= i
; j
< count
; j
++)
1071 if (blkp
[j
/ tbperdb
] != 0)
1072 spcl
.c_addr
[j
- i
] = 1;
1074 spcl
.c_addr
[j
- i
] = 0;
1075 spcl
.c_count
= count
- i
;
1077 bp
= &blkp
[i
/ tbperdb
];
1078 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1080 if (j
+ tbperdb
<= count
)
1081 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1083 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1086 spcl
.c_type
= TS_ADDR
;
1091 * Dump a map to the tape.
1094 dumpmap(char *map
, int type
, ino_t ino
)
1100 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1102 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1107 * Write a header record to the dump tape.
1110 writeheader(ino_t ino
)
1113 register __s32 sum
, cnt
, *lp
;
1115 register int32_t sum
, cnt
, *lp
;
1118 spcl
.c_inumber
= ino
;
1119 spcl
.c_magic
= NFS_MAGIC
;
1120 spcl
.c_checksum
= 0;
1122 lp
= (__s32
*)&spcl
;
1124 lp
= (int32_t *)&spcl
;
1128 cnt
= sizeof(union u_spcl
) / (4 * sizeof(__s32
));
1130 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1132 while (--cnt
>= 0) {
1138 spcl
.c_checksum
= CHECKSUM
- sum
;
1139 writerec((char *)&spcl
, 1);
1146 static struct dinode dinode
;
1150 err
= ext2fs_read_inode(fs
, inum
, (struct ext2_inode
*) &dinode
);
1152 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1157 #else /* __linux__ */
1161 static daddr_t minino
, maxino
;
1162 static struct dinode inoblock
[MAXINOPB
];
1165 if (inum
>= minino
&& inum
< maxino
)
1166 return (&inoblock
[inum
- minino
]);
1167 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1168 (int)sblock
->fs_bsize
);
1169 minino
= inum
- (inum
% INOPB(sblock
));
1170 maxino
= minino
+ INOPB(sblock
);
1171 return (&inoblock
[inum
- minino
]);
1173 #endif /* __linux__ */
1176 * Read a chunk of data from the disk.
1177 * Try to recover from hard errors by reading in sector sized pieces.
1178 * Error recovery is attempted at most BREADEMAX times before seeking
1179 * consent from the operator to continue.
1181 int breaderrors
= 0;
1182 #define BREADEMAX 32
1185 bread(daddr_t blkno
, char *buf
, int size
)
1192 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1193 (((ext2_loff_t
)blkno
) << dev_bshift
))
1195 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1196 ((off_t
)blkno
<< dev_bshift
))
1198 msg("bread: lseek fails\n");
1199 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1201 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1203 * Trying to read the final fragment.
1205 * NB - dump only works in TP_BSIZE blocks, hence
1206 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1207 * It should be smarter about not actually trying to
1208 * read more than it can get, but for the time being
1209 * we punt and scale back the read only when it gets
1210 * us into trouble. (mkm 9/25/83)
1216 msg("read error from %s: %s: [block %d]: count=%d\n",
1217 disk
, strerror(errno
), blkno
, size
);
1219 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1220 disk
, blkno
, size
, cnt
);
1221 if (++breaderrors
> BREADEMAX
) {
1222 msg("More than %d block read errors from %d\n",
1224 broadcast("DUMP IS AILING!\n");
1225 msg("This is an unrecoverable error.\n");
1226 if (!query("Do you want to attempt to continue?")){
1233 * Zero buffer, then try to read each sector of buffer separately.
1235 memset(buf
, 0, size
);
1236 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1238 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1239 (((ext2_loff_t
)blkno
) << dev_bshift
))
1241 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1242 ((off_t
)blkno
<< dev_bshift
))
1244 msg("bread: lseek2 fails!\n");
1245 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1248 msg("read error from %s: %s: [sector %d]: count=%d\n",
1249 disk
, strerror(errno
), blkno
, dev_bsize
);
1252 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1253 disk
, blkno
, dev_bsize
, cnt
);