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 <stelian@popies.net>, 1999-2000
6 * Stelian Pop <stelian@popies.net> - AlcĂ´ve <www.alcove.com>, 2000-2002
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. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static const char rcsid
[] =
40 "$Id: traverse.c,v 1.74 2011/06/10 13:41:41 stelian Exp $";
46 #include <sys/types.h>
53 #include <sys/param.h>
56 #ifdef HAVE_EXT2FS_EXT2_FS_H
57 #include <ext2fs/ext2_fs.h>
59 #include <linux/ext2_fs.h>
61 #include <ext2fs/ext2fs.h>
62 #include <bsdcompat.h>
63 #include <compaterr.h>
66 #include <sys/vnode.h>
69 #include <ufs/fsdir.h>
70 #include <ufs/inode.h>
72 #include <ufs/ufs/dir.h>
73 #include <ufs/ufs/dinode.h>
74 #include <ufs/ffs/fs.h>
75 #endif /* __linux__ */
77 #include <protocols/dumprestore.h>
82 #define HASDUMPEDFILE 0x1
83 #define HASSUBDIRS 0x2
86 typedef u_quad_t fsizeT
;
89 typedef quad_t fsizeT
;
96 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
97 int blocksize
, char *buf
, void *private));
99 static int dirindir
__P((dump_ino_t ino
, daddr_t blkno
, int level
, long *size
));
100 static void dmpindir
__P((dump_ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
101 static int searchdir
__P((dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
));
103 static void mapfileino
__P((dump_ino_t ino
, struct dinode
const *dp
, long long *tapesize
, int *dirskipped
));
104 static void dump_xattr
__P((dump_ino_t ino
, struct dinode
*dp
));
106 #ifdef HAVE_EXT2_JOURNAL_INUM
107 #define ext2_journal_ino(sb) (sb->s_journal_inum)
109 #define ext2_journal_ino(sb) (*((u_int32_t *)sb + 0x38))
111 #ifndef HAVE_EXT2_INO_T
112 typedef ino_t ext2_ino_t
;
115 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
116 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
118 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
119 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
121 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
122 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
124 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
125 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
128 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
129 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
130 EXT2_FEATURE_INCOMPAT_FILETYPE)
132 #ifndef EXT2_RESIZE_INO
133 #define EXT2_RESIZE_INO 7
135 #ifndef EXT2_FT_UNKNOWN
136 #define EXT2_FT_UNKNOWN 0
137 #define EXT2_FT_REG_FILE 1
138 #define EXT2_FT_DIR 2
139 #define EXT2_FT_CHRDEV 3
140 #define EXT2_FT_BLKDEV 4
141 #define EXT2_FT_FIFO 5
142 #define EXT2_FT_SOCK 6
143 #define EXT2_FT_SYMLINK 7
144 #define EXT2_FT_MAX 8
147 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
151 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
153 struct ext2_super_block
*es
= (*fs
)->super
;
154 dump_ino_t journal_ino
= ext2_journal_ino(es
);
156 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
157 msg("This is a journal, not a filesystem!\n");
158 retval
= EXT2_ET_UNSUPP_FEATURE
;
161 else if ((retval
= es
->s_feature_incompat
&
162 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
163 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
164 msg("Unsupported feature(s) 0x%x in filesystem\n",
166 retval
= EXT2_ET_UNSUPP_FEATURE
;
170 if (es
->s_feature_compat
&
171 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
173 do_exclude_ino(journal_ino
, "journal inode");
174 do_exclude_ino(EXT2_RESIZE_INO
, "resize inode");
181 * This is an estimation of the number of TP_BSIZE blocks in the file.
182 * It estimates the number of blocks in files with holes by assuming
183 * that all of the blocks accounted for by di_blocks are data blocks
184 * (when some of the blocks are usually used for indirect pointers);
185 * hence the estimate may be high.
188 blockest(struct dinode
const *dp
)
190 long blkest
, sizeest
;
194 * dp->di_size is the size of the file in bytes.
195 * dp->di_blocks stores the number of sectors actually in the file.
196 * If there are more sectors than the size would indicate, this just
197 * means that there are indirect blocks in the file or unused
198 * sectors in the last file block; we can safely ignore these
199 * (blkest = sizeest below).
200 * If the file is bigger than the number of sectors would indicate,
201 * then the file has holes in it. In this case we must use the
202 * block count to estimate the number of data blocks used, but
203 * we use the actual size for estimating the number of indirect
204 * dump blocks (sizeest vs. blkest in the indirect block
207 blkest
= howmany((u_quad_t
)dp
->di_blocks
* 512, fs
->blocksize
) * (fs
->blocksize
/ TP_BSIZE
);
208 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
209 sizeest
= howmany(i_size
, fs
->blocksize
) * (fs
->blocksize
/ TP_BSIZE
);
210 if (blkest
> sizeest
)
213 if ((dp
->di_mode
& IFMT
) == IFDIR
) {
215 * for directories, assume only half of space is filled
219 sizeest
= sizeest
/ 2;
221 if (i_size
> (u_quad_t
)fs
->blocksize
* NDADDR
) {
222 /* calculate the number of indirect blocks on the dump tape */
224 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
228 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
229 /* calculate the number of indirect blocks on the dump tape */
231 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
238 /* Auxiliary macro to pick up files changed since previous dump. */
239 #define CSINCE(dp, t) \
240 ((dp)->di_ctime >= (t))
241 #define MSINCE(dp, t) \
242 ((dp)->di_mtime >= (t))
243 #define CHANGEDSINCE(dp, t) \
246 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
248 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
250 #define NODUMP_FLAG(dp) 0
253 /* The WANTTODUMP macro decides whether a file should be dumped. */
254 #define WANTTODUMP(dp, ino) \
255 (CHANGEDSINCE(dp, ((u_int32_t)spcl.c_ddate)) && \
256 (!NODUMP_FLAG(dp)) && \
260 * Determine if given inode should be dumped. "dp" must either point to a
261 * copy of the given inode, or be NULL (in which case it is fetched.)
264 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long long *tapesize
, int *dirskipped
)
269 * Skip inode if we've already marked it for dumping
271 if (TSTINO(ino
, usedinomap
))
275 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
278 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
282 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
283 * used map. All inode but dirs who have the nodump attribute go
286 SETINO(ino
, usedinomap
);
289 do_exclude_ino(ino
, "nodump attribute");
292 SETINO(ino
, dumpdirmap
);
293 if (WANTTODUMP(dp
, ino
)) {
294 SETINO(ino
, dumpinomap
);
295 if (!MSINCE(dp
, (u_int32_t
)spcl
.c_ddate
))
296 SETINO(ino
, metainomap
);
297 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
300 *tapesize
+= blockest(dp
);
304 if (exclude_ino(ino
))
305 CLRINO(ino
, usedinomap
);
313 * Walk the inode list for a filesystem to find all allocated inodes
314 * that have been modified since the previous dump time. Also, find all
315 * the directories in the filesystem.
319 mapfiles(UNUSED(dump_ino_t maxino
), long long *tapesize
)
322 int anydirskipped
= 0;
323 ext2_inode_scan scan
;
325 struct ext2_inode inode
;
328 * We use libext2fs's inode scanning routines, which are particularly
329 * robust. (Note that getino cannot return an error.)
331 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
333 com_err(disk
, err
, "while opening inodes\n");
337 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
338 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
341 com_err(disk
, err
, "while scanning inode #%ld\n",
349 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
352 ext2fs_close_inode_scan(scan
);
355 * Restore gets very upset if the root is not dumped,
356 * so ensure that it always is dumped.
358 SETINO(ROOTINO
, dumpinomap
);
359 return (anydirskipped
);
363 mapfiles(dump_ino_t maxino
, long long *tapesize
)
366 int anydirskipped
= 0;
368 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
369 mapfileino(ino
, tapesize
, &anydirskipped
);
372 * Restore gets very upset if the root is not dumped,
373 * so ensure that it always is dumped.
375 SETINO(ROOTINO
, dumpinomap
);
376 return (anydirskipped
);
378 #endif /* __linux__ */
382 maponefile(UNUSED(dump_ino_t maxino
), long long *tapesize
, char *directory
)
386 char dir_name
[MAXPATHLEN
];
387 int i
, anydirskipped
= 0;
390 * Mark every directory in the path as being dumped
392 for (i
= 0; i
< (int)strlen (directory
); i
++) {
393 if (directory
[i
] == '/') {
394 strncpy (dir_name
, directory
, i
);
396 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
,
399 com_err(disk
, retval
,
400 "while translating %s", dir_name
);
403 mapfileino((dump_ino_t
) dir_ino
, 0,
404 tapesize
, &anydirskipped
);
408 * Mark the final directory
410 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
412 com_err(disk
, retval
, "while translating %s", directory
);
415 mapfileino((dump_ino_t
)dir_ino
, 0, tapesize
, &anydirskipped
);
417 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
420 * Restore gets very upset if the root is not dumped,
421 * so ensure that it always is dumped.
423 SETINO(ROOTINO
, dumpdirmap
);
424 return anydirskipped
;
426 #endif /* __linux__ */
429 struct mapfile_context
{
435 mapfilesindir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
436 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
438 struct dinode
const *dp
;
441 struct mapfile_context
*mfc
;
445 mfc
= (struct mapfile_context
*)private;
446 dp
= getino(dirent
->inode
);
448 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
450 mode
= dp
->di_mode
& IFMT
;
451 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
452 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
453 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
454 ( dirent
->name_len
& 0xFF ) != 2)) {
455 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
456 mapfilesindir
, private);
467 * Walk the inode list for a filesystem to find all allocated inodes
468 * that have been modified since the previous dump time. Also, find all
469 * the directories in the filesystem.
472 mapfilesfromdir(UNUSED(dump_ino_t maxino
), long long *tapesize
, char *directory
)
475 struct mapfile_context mfc
;
477 char dir_name
[MAXPATHLEN
];
478 int i
, anydirskipped
= 0;
481 * Mark every directory in the path as being dumped
483 for (i
= 0; i
< (int)strlen (directory
); i
++) {
484 if (directory
[i
] == '/') {
485 strncpy (dir_name
, directory
, i
);
487 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
490 com_err(disk
, retval
, "while translating %s",
494 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
498 * Mark the final directory
500 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
502 com_err(disk
, retval
, "while translating %s", directory
);
505 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
507 mfc
.tapesize
= tapesize
;
508 mfc
.anydirskipped
= &anydirskipped
;
509 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
513 com_err(disk
, retval
, "while mapping files in %s", directory
);
517 * Ensure that the root inode actually appears in the file list
520 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
522 * Restore gets very upset if the root is not dumped,
523 * so ensure that it always is dumped.
525 SETINO(ROOTINO
, dumpinomap
);
526 return anydirskipped
;
531 struct mapdirs_context
{
541 * Scan each directory on the filesystem to see if it has any modified
542 * files in it. If it does, and has not already been added to the dump
543 * list (because it was itself modified), then add it. If a directory
544 * has not been modified itself, contains no modified files and has no
545 * subdirectories, then it can be deleted from the dump list and from
546 * the list of directories. By deleting it from the list of directories,
547 * its parent may now qualify for the same treatment on this or a later
548 * pass using this algorithm.
551 mapdirs(dump_ino_t maxino
, long long *tapesize
)
561 struct mapdirs_context mdc
;
563 int ret
, change
= 0, nodump
;
565 isdir
= 0; /* XXX just to get gcc to shut up */
566 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
567 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
572 * If dir has been removed from the used map, it's either
573 * because it had the nodump flag, or it herited it from
574 * its parent. A directory can't be in dumpinomap if not
575 * in usedinomap, but we have to go through it anyway
576 * to propagate the nodump attribute.
578 if ((isdir
& 1) == 0)
580 nodump
= (TSTINO(ino
, usedinomap
) == 0);
581 if (TSTINO(ino
, dumpinomap
) && nodump
== 0)
588 mdc
.tapesize
= tapesize
;
589 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
590 #else /* __linux__ */
591 filesize
= dp
->di_size
;
592 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
593 if (dp
->di_db
[i
] != 0)
594 ret
|= searchdir(ino
, dp
->di_db
[i
],
595 (long)dblksize(sblock
, dp
, i
),
597 if (ret
& HASDUMPEDFILE
)
600 filesize
-= sblock
->fs_bsize
;
602 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
603 if (dp
->di_ib
[i
] == 0)
605 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
607 #endif /* __linux__ */
608 if (ret
& HASDUMPEDFILE
) {
609 SETINO(ino
, dumpinomap
);
610 *tapesize
+= blockest(dp
);
615 if (ret
& HASSUBDIRS
)
616 change
= 1; /* subdirs have inherited nodump */
617 CLRINO(ino
, dumpdirmap
);
618 } else if ((ret
& HASSUBDIRS
) == 0) {
619 if (!TSTINO(ino
, dumpinomap
)) {
620 CLRINO(ino
, dumpdirmap
);
630 * Read indirect blocks, and pass the data blocks to be searched
631 * as directories. Quit as soon as any entry is found that will
632 * require the directory to be dumped.
635 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
639 daddr_t idblk
[MAXNINDIR
];
641 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
642 if (ind_level
<= 0) {
643 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
646 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
648 if (ret
& HASDUMPEDFILE
)
651 *filesize
-= sblock
->fs_bsize
;
656 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
659 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
663 #endif /* !__linux__ */
666 * Scan a disk block containing directory information looking to see if
667 * any of the entries are on the dump list and to see if the directory
668 * contains any subdirectories.
672 searchdir(struct ext2_dir_entry
*dp
, UNUSED(int offset
),
673 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
675 struct mapdirs_context
*mdc
;
680 mdc
= (struct mapdirs_context
*)private;
682 tapesize
= mdc
->tapesize
;
686 if (dp
->name
[0] == '.') {
687 if (( dp
->name_len
& 0xFF ) == 1)
689 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
693 ip
= getino(dp
->inode
);
694 if (TSTINO(dp
->inode
, dumpinomap
)) {
695 CLRINO(dp
->inode
, dumpinomap
);
696 *tapesize
-= blockest(ip
);
698 /* Add dir back to the dir map and remove from
699 * usedinomap to propagate nodump */
700 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
701 SETINO(dp
->inode
, dumpdirmap
);
702 CLRINO(dp
->inode
, usedinomap
);
706 if (TSTINO(dp
->inode
, dumpinomap
)) {
707 *ret
|= HASDUMPEDFILE
;
708 if (*ret
& HASSUBDIRS
)
711 if (TSTINO(dp
->inode
, dumpdirmap
)) {
713 if (*ret
& HASDUMPEDFILE
)
720 #else /* __linux__ */
723 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
729 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
732 for (loc
= 0; loc
< size
; ) {
733 dp
= (struct direct
*)(dblk
+ loc
);
734 if (dp
->d_reclen
== 0) {
735 msg("corrupted directory, inumber %d\n", ino
);
741 if (dp
->d_name
[0] == '.') {
742 if (dp
->d_name
[1] == '\0')
744 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
747 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
748 ret
|= HASDUMPEDFILE
;
749 if (ret
& HASSUBDIRS
)
752 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
754 if (ret
& HASDUMPEDFILE
)
760 #endif /* __linux__ */
764 struct block_context
{
773 * Dump a block to the tape
776 dumponeblock(UNUSED(ext2_filsys fs
), blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
777 UNUSED(blk_t ref_block
), UNUSED(int ref_offset
), void * private)
779 struct block_context
*p
;
782 p
= (struct block_context
*)private;
783 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
784 p
->buf
[p
->cnt
++] = 0;
785 if (p
->cnt
== p
->max
) {
786 blksout (p
->buf
, p
->cnt
, p
->ino
);
790 p
->buf
[p
->cnt
++] = *blocknr
;
791 if (p
->cnt
== p
->max
) {
792 blksout (p
->buf
, p
->cnt
, p
->ino
);
795 p
->next_block
= blockcnt
+ 1;
801 dump_xattr(dump_ino_t ino
, struct dinode
*dp
) {
803 if (dp
->di_extraisize
!= 0) {
804 #ifdef HAVE_EXT2FS_READ_INODE_FULL
805 char inode
[EXT2_INODE_SIZE(fs
->super
)];
809 memset(inode
, 0, EXT2_INODE_SIZE(fs
->super
));
810 err
= ext2fs_read_inode_full(fs
, (ext2_ino_t
)ino
,
811 (struct ext2_inode
*) inode
,
812 EXT2_INODE_SIZE(fs
->super
));
814 com_err(disk
, err
, "while reading inode #%ld\n", (long)ino
);
818 magic
= (void *)inode
+ EXT2_GOOD_OLD_INODE_SIZE
+ dp
->di_extraisize
;
819 if (*magic
== EXT2_XATTR_MAGIC
) {
820 char xattr
[EXT2_INODE_SIZE(fs
->super
)];
825 msg("dumping EA (inode) in inode #%ld\n", (long)ino
);
826 memset(xattr
, 0, EXT2_INODE_SIZE(fs
->super
));
827 memcpy(xattr
, (void *)magic
,
828 EXT2_INODE_SIZE(fs
->super
) -
829 (EXT2_GOOD_OLD_INODE_SIZE
+ dp
->di_extraisize
));
830 magic
= (u_int32_t
*)xattr
;
831 *magic
= EXT2_XATTR_MAGIC2
;
833 spcl
.c_type
= TS_INODE
;
834 spcl
.c_dinode
.di_size
= EXT2_INODE_SIZE(fs
->super
);
835 spcl
.c_flags
|= DR_EXTATTRIBUTES
;
836 spcl
.c_extattributes
= EXT_XATTR
;
837 spcl
.c_count
= howmany(EXT2_INODE_SIZE(fs
->super
), TP_BSIZE
);
838 for (i
= 0; i
< spcl
.c_count
; i
++)
841 for (i
= 0, cp
= xattr
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
843 spcl
.c_flags
&= ~DR_EXTATTRIBUTES
;
844 spcl
.c_extattributes
= 0;
849 if (dp
->di_file_acl
) {
852 msg("dumping EA (block) in inode #%ld\n", (long)ino
);
854 spcl
.c_type
= TS_INODE
;
855 spcl
.c_dinode
.di_size
= sblock
->fs_bsize
;
856 spcl
.c_flags
|= DR_EXTATTRIBUTES
;
857 spcl
.c_extattributes
= EXT_XATTR
;
858 blksout(&dp
->di_file_acl
, EXT2_FRAGS_PER_BLOCK(fs
->super
), ino
);
859 spcl
.c_flags
&= ~DR_EXTATTRIBUTES
;
860 spcl
.c_extattributes
= 0;
865 * Dump passes 3 and 4.
867 * Dump the contents of an inode to tape.
870 dumpino(struct dinode
*dp
, dump_ino_t ino
, int metaonly
)
876 struct new_bsd_inode nbi
;
879 struct block_context bc
;
888 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
892 dumpmap(dumpinomap
, TS_BITS
, ino
);
894 CLRINO(ino
, dumpinomap
);
896 memset(&nbi
, 0, sizeof(nbi
));
897 nbi
.di_mode
= dp
->di_mode
;
898 nbi
.di_nlink
= dp
->di_nlink
;
899 nbi
.di_ouid
= dp
->di_uid
;
900 nbi
.di_ogid
= dp
->di_gid
;
901 nbi
.di_size
= i_size
;
902 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
903 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
904 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
905 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
906 nbi
.di_flags
= dp
->di_flags
;
907 nbi
.di_blocks
= dp
->di_blocks
;
908 nbi
.di_gen
= dp
->di_gen
;
909 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
910 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
911 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
912 #else /* __linux__ */
914 #endif /* __linux__ */
915 spcl
.c_type
= TS_INODE
;
918 indexer
->addInode(dp
, ino
, metaonly
);
920 if (metaonly
&& (dp
->di_mode
& S_IFMT
)) {
921 spcl
.c_flags
|= DR_METAONLY
;
924 spcl
.c_flags
&= ~DR_METAONLY
;
929 switch (dp
->di_mode
& S_IFMT
) {
939 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
945 * Check for short symbolic link.
949 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
953 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
954 buf
[dp
->di_size
] = '\0';
959 #endif /* __linux__ */
961 if (dp
->di_size
> 0 &&
962 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
966 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
967 buf
[dp
->di_size
] = '\0';
991 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
995 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
996 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
1001 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, BLOCK_FLAG_DATA_ONLY
, NULL
, dumponeblock
, (void *)&bc
);
1002 /* deal with holes at the end of the inode */
1003 if (i_size
> ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
) {
1004 remaining
= i_size
- ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
;
1005 for (i
= 0; i
< (int)howmany(remaining
, sblock
->fs_fsize
); i
++) {
1006 bc
.buf
[bc
.cnt
++] = 0;
1007 if (bc
.cnt
== bc
.max
) {
1008 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
1014 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
1017 dump_xattr(ino
, dp
);
1019 if (i_size
> (u_quad_t
)NDADDR
* sblock
->fs_bsize
)
1020 cnt
= NDADDR
* sblock
->fs_frag
;
1022 cnt
= howmany(i_size
, sblock
->fs_fsize
);
1023 blksout(&dp
->di_db
[0], cnt
, ino
);
1024 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0) {
1025 dump_xattr(ino
, dp
);
1028 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
1029 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
1038 struct convert_dir_context
{
1046 * This function converts an ext2fs directory entry to the BSD format.
1048 * Basically, it adds a null-character at the end of the name, recomputes the
1049 * size of the entry, and creates it in a temporary buffer
1052 convert_dir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
1053 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
1055 struct convert_dir_context
*p
;
1059 /* do not save entries to excluded inodes */
1060 if (exclude_ino(dirent
->inode
))
1063 p
= (struct convert_dir_context
*)private;
1065 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
1066 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
1067 dp
= (struct direct
*)(p
->buf
+ p
->prev_offset
);
1068 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
1069 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
1072 dp
= (struct direct
*)(p
->buf
+ p
->offset
);
1073 dp
->d_ino
= dirent
->inode
;
1074 dp
->d_reclen
= reclen
;
1075 dp
->d_namlen
= dirent
->name_len
& 0xFF;
1076 switch ((dirent
->name_len
& 0xFF00) >> 8) {
1078 dp
->d_type
= DT_UNKNOWN
;
1080 case EXT2_FT_REG_FILE
:
1081 dp
->d_type
= DT_REG
;
1084 dp
->d_type
= DT_DIR
;
1086 case EXT2_FT_CHRDEV
:
1087 dp
->d_type
= DT_CHR
;
1089 case EXT2_FT_BLKDEV
:
1090 dp
->d_type
= DT_BLK
;
1093 dp
->d_type
= DT_FIFO
;
1096 dp
->d_type
= DT_SOCK
;
1098 case EXT2_FT_SYMLINK
:
1099 dp
->d_type
= DT_LNK
;
1102 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
1103 dp
->d_name
[dp
->d_namlen
] = '\0';
1104 p
->prev_offset
= p
->offset
;
1105 p
->offset
+= reclen
;
1107 //indexer->addDirEntry(dirent, offset, blocksize, buf, private);
1115 * Dumps a directory to tape after converting it to the BSD format
1118 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
1122 struct new_bsd_inode nbi
;
1123 struct convert_dir_context cdc
;
1125 struct ext2_dir_entry
*de
;
1130 dumpmap(dumpinomap
, TS_BITS
, ino
);
1132 CLRINO(ino
, dumpinomap
);
1135 * Convert the directory to the BSD format
1137 /* Allocate a buffer for the conversion (twice the size of the
1138 ext2fs directory to avoid problems ;-) */
1139 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
1140 if (cdc
.buf
== NULL
)
1141 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1142 (unsigned long)ino
);
1144 cdc
.prev_offset
= 0;
1145 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
1146 /* Do the conversion */
1147 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
1149 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
1152 /* Fix the last entry */
1153 if ((cdc
.offset
% cdc
.bs
) != 0) {
1154 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
1155 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1156 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1159 dir_size
= cdc
.offset
;
1162 memset(&nbi
, 0, sizeof(nbi
));
1163 nbi
.di_mode
= dp
->di_mode
;
1164 nbi
.di_nlink
= dp
->di_nlink
;
1165 nbi
.di_ouid
= dp
->di_uid
;
1166 nbi
.di_ogid
= dp
->di_gid
;
1167 nbi
.di_size
= dir_size
; /* (u_quad_t)dp->di_size; */
1168 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
1169 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
1170 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
1171 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
1172 nbi
.di_flags
= dp
->di_flags
;
1173 nbi
.di_blocks
= dp
->di_blocks
;
1174 nbi
.di_gen
= dp
->di_gen
;
1175 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
1176 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
1177 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
1178 #else /* __linux__ */
1179 spcl
.c_dinode
= *dp
;
1180 #endif /* __linux__ */
1181 spcl
.c_type
= TS_INODE
;
1183 switch (dp
->di_mode
& S_IFMT
) {
1194 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1199 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1200 dp
->di_mode
& IFMT
, ino
);
1203 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1207 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1209 spcl
.c_type
= TS_ADDR
;
1212 indexer
->addInode(dp
, ino
, 0);
1214 (void)free(cdc
.buf
);
1215 dump_xattr(ino
, dp
);
1217 #endif /* __linux__ */
1221 * Read indirect blocks, and pass the data blocks to be dumped.
1224 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1231 daddr_t idblk
[MAXNINDIR
];
1234 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1237 * My RedHat 4.0 system doesn't have these flags; I haven't
1238 * upgraded e2fsprogs yet
1240 #if defined(EXT2_FLAG_SWAP_BYTES)
1241 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1242 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1245 max
= sblock
->fs_bsize
>> 2;
1246 swapme
= (blk_t
*) idblk
;
1247 for (i
= 0; i
< max
; i
++, swapme
++)
1248 *swapme
= ext2fs_swab32(*swapme
);
1250 #endif /* __linux__ */
1252 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1253 if (ind_level
<= 0) {
1254 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1255 cnt
= howmany(*size
, sblock
->fs_fsize
);
1258 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1260 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1262 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1263 blksout(&idblk
[0], cnt
, ino
);
1267 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1268 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1276 * Collect up the data into tape record sized buffers and output them.
1279 blksout(blk_t
*blkp
, int frags
, dump_ino_t ino
)
1282 int i
, j
, count
, blks
, tbperdb
;
1284 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1285 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1286 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1287 if (i
+ TP_NINDIR
> blks
)
1290 count
= i
+ TP_NINDIR
;
1291 for (j
= i
; j
< count
; j
++)
1292 if (blkp
[j
/ tbperdb
] != 0)
1293 spcl
.c_addr
[j
- i
] = 1;
1295 spcl
.c_addr
[j
- i
] = 0;
1296 spcl
.c_count
= count
- i
;
1298 bp
= &blkp
[i
/ tbperdb
];
1299 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1301 if (j
+ tbperdb
<= count
)
1302 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1304 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1307 spcl
.c_type
= TS_ADDR
;
1312 * Dump a map to the tape.
1315 dumpmap(char *map
, int type
, dump_ino_t ino
)
1321 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1322 spcl
.c_dinode
.di_size
= mapsize
;
1324 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1328 #if defined(__linux__) && !defined(int32_t)
1329 #define int32_t __s32
1333 * Compute and fill in checksum information.
1336 mkchecksum(union u_spcl
*tmpspcl
)
1338 int32_t sum
, cnt
, *lp
;
1340 tmpspcl
->s_spcl
.c_checksum
= 0;
1341 lp
= (int32_t *)&tmpspcl
->s_spcl
;
1343 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1344 while (--cnt
>= 0) {
1350 tmpspcl
->s_spcl
.c_checksum
= CHECKSUM
- sum
;
1354 * Write a header record to the dump tape.
1357 writeheader(dump_ino_t ino
)
1359 char *state
; /* need to have some place to put this! */
1360 spcl
.c_inumber
= ino
;
1361 spcl
.c_magic
= NFS_MAGIC
;
1362 mkchecksum((union u_spcl
*)&spcl
);
1363 writerec((char *)&spcl
, 1);
1368 getino(dump_ino_t inum
)
1370 static struct dinode dinode
;
1374 #ifdef HAVE_EXT2FS_READ_INODE_FULL
1375 err
= ext2fs_read_inode_full(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
, sizeof(struct dinode
));
1377 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1380 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1385 #else /* __linux__ */
1387 getino(dump_ino_t inum
)
1389 static daddr_t minino
, maxino
;
1390 static struct dinode inoblock
[MAXINOPB
];
1393 if (inum
>= minino
&& inum
< maxino
)
1394 return (&inoblock
[inum
- minino
]);
1395 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1396 (int)sblock
->fs_bsize
);
1397 minino
= inum
- (inum
% INOPB(sblock
));
1398 maxino
= minino
+ INOPB(sblock
);
1399 return (&inoblock
[inum
- minino
]);
1401 #endif /* __linux__ */
1404 * Read a chunk of data from the disk.
1405 * Try to recover from hard errors by reading in sector sized pieces.
1406 * Error recovery is attempted at most BREADEMAX times before seeking
1407 * consent from the operator to continue.
1409 int breaderrors
= 0;
1412 bread(ext2_loff_t blkno
, char *buf
, int size
)
1418 if (ext2fs_llseek(diskfd
, (blkno
<< dev_bshift
), 0) !=
1419 (blkno
<< dev_bshift
))
1421 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1422 ((off_t
)blkno
<< dev_bshift
))
1424 msg("bread: lseek fails\n");
1425 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1427 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1429 * Trying to read the final fragment.
1431 * NB - dump only works in TP_BSIZE blocks, hence
1432 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1433 * It should be smarter about not actually trying to
1434 * read more than it can get, but for the time being
1435 * we punt and scale back the read only when it gets
1436 * us into trouble. (mkm 9/25/83)
1442 msg("read error from %s: %s: [block %d, ext2blk %d]: count=%d\n",
1443 disk
, strerror(errno
), blkno
,
1444 dbtofsb(sblock
, blkno
), size
);
1446 msg("short read error from %s: [block %d, ext2blk %d]: count=%d, got=%d\n",
1447 disk
, blkno
, dbtofsb(sblock
, blkno
), size
, cnt
);
1448 if (breademax
&& ++breaderrors
> breademax
) {
1449 msg("More than %d block read errors from %d\n",
1451 broadcast("DUMP IS AILING!\n");
1452 msg("This is an unrecoverable error.\n");
1453 if (!query("Do you want to attempt to continue?")){
1460 * Zero buffer, then try to read each sector of buffer separately.
1462 memset(buf
, 0, size
);
1463 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1465 if (ext2fs_llseek(diskfd
, (blkno
<< dev_bshift
), 0) !=
1466 (blkno
<< dev_bshift
))
1468 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1469 ((off_t
)blkno
<< dev_bshift
))
1471 msg("bread: lseek2 fails!\n");
1472 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1475 msg("read error from %s: %s: [sector %d, ext2blk %d]: count=%d\n",
1476 disk
, strerror(errno
), blkno
,
1477 dbtofsb(sblock
, blkno
), dev_bsize
);
1480 msg("short read error from %s: [sector %d, ext2blk %d]: count=%d, got=%d\n",
1481 disk
, blkno
, dbtofsb(sblock
, blkno
), dev_bsize
, cnt
);