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 1.71 2010/06/10 12:17:35 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>
81 #define HASDUMPEDFILE 0x1
82 #define HASSUBDIRS 0x2
85 typedef u_quad_t fsizeT
;
88 typedef quad_t fsizeT
;
95 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
96 int blocksize
, char *buf
, void *private));
98 static int dirindir
__P((dump_ino_t ino
, daddr_t blkno
, int level
, long *size
));
99 static void dmpindir
__P((dump_ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
100 static int searchdir
__P((dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
));
102 static void mapfileino
__P((dump_ino_t ino
, struct dinode
const *dp
, long long *tapesize
, int *dirskipped
));
103 static void dump_xattr
__P((dump_ino_t ino
, struct dinode
*dp
));
105 #ifdef HAVE_EXT2_JOURNAL_INUM
106 #define ext2_journal_ino(sb) (sb->s_journal_inum)
108 #define ext2_journal_ino(sb) (*((u_int32_t *)sb + 0x38))
110 #ifndef HAVE_EXT2_INO_T
111 typedef ino_t ext2_ino_t
;
114 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
115 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
117 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
118 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
120 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
121 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
123 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
124 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
127 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
128 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
129 EXT2_FEATURE_INCOMPAT_FILETYPE)
131 #ifndef EXT2_RESIZE_INO
132 #define EXT2_RESIZE_INO 7
134 #ifndef EXT2_FT_UNKNOWN
135 #define EXT2_FT_UNKNOWN 0
136 #define EXT2_FT_REG_FILE 1
137 #define EXT2_FT_DIR 2
138 #define EXT2_FT_CHRDEV 3
139 #define EXT2_FT_BLKDEV 4
140 #define EXT2_FT_FIFO 5
141 #define EXT2_FT_SOCK 6
142 #define EXT2_FT_SYMLINK 7
143 #define EXT2_FT_MAX 8
146 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
150 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
152 struct ext2_super_block
*es
= (*fs
)->super
;
153 dump_ino_t journal_ino
= ext2_journal_ino(es
);
155 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
156 msg("This is a journal, not a filesystem!\n");
157 retval
= EXT2_ET_UNSUPP_FEATURE
;
160 else if ((retval
= es
->s_feature_incompat
&
161 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
162 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
163 msg("Unsupported feature(s) 0x%x in filesystem\n",
165 retval
= EXT2_ET_UNSUPP_FEATURE
;
169 if (es
->s_feature_compat
&
170 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
172 do_exclude_ino(journal_ino
, "journal inode");
173 do_exclude_ino(EXT2_RESIZE_INO
, "resize inode");
180 * This is an estimation of the number of TP_BSIZE blocks in the file.
181 * It estimates the number of blocks in files with holes by assuming
182 * that all of the blocks accounted for by di_blocks are data blocks
183 * (when some of the blocks are usually used for indirect pointers);
184 * hence the estimate may be high.
187 blockest(struct dinode
const *dp
)
189 long blkest
, sizeest
;
193 * dp->di_size is the size of the file in bytes.
194 * dp->di_blocks stores the number of sectors actually in the file.
195 * If there are more sectors than the size would indicate, this just
196 * means that there are indirect blocks in the file or unused
197 * sectors in the last file block; we can safely ignore these
198 * (blkest = sizeest below).
199 * If the file is bigger than the number of sectors would indicate,
200 * then the file has holes in it. In this case we must use the
201 * block count to estimate the number of data blocks used, but
202 * we use the actual size for estimating the number of indirect
203 * dump blocks (sizeest vs. blkest in the indirect block
206 blkest
= howmany((u_quad_t
)dp
->di_blocks
* 512, fs
->blocksize
) * (fs
->blocksize
/ TP_BSIZE
);
207 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
208 sizeest
= howmany(i_size
, fs
->blocksize
) * (fs
->blocksize
/ TP_BSIZE
);
209 if (blkest
> sizeest
)
212 if ((dp
->di_mode
& IFMT
) == IFDIR
) {
214 * for directories, assume only half of space is filled
218 sizeest
= sizeest
/ 2;
220 if (i_size
> (u_quad_t
)fs
->blocksize
* NDADDR
) {
221 /* calculate the number of indirect blocks on the dump tape */
223 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
227 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
228 /* calculate the number of indirect blocks on the dump tape */
230 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
237 /* Auxiliary macro to pick up files changed since previous dump. */
238 #define CSINCE(dp, t) \
239 ((dp)->di_ctime >= (t))
240 #define MSINCE(dp, t) \
241 ((dp)->di_mtime >= (t))
242 #define CHANGEDSINCE(dp, t) \
245 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
247 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
249 #define NODUMP_FLAG(dp) 0
252 /* The WANTTODUMP macro decides whether a file should be dumped. */
253 #define WANTTODUMP(dp, ino) \
254 (CHANGEDSINCE(dp, ((u_int32_t)spcl.c_ddate)) && \
255 (!NODUMP_FLAG(dp)) && \
259 * Determine if given inode should be dumped. "dp" must either point to a
260 * copy of the given inode, or be NULL (in which case it is fetched.)
263 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long long *tapesize
, int *dirskipped
)
268 * Skip inode if we've already marked it for dumping
270 if (TSTINO(ino
, usedinomap
))
274 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
277 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
281 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
282 * used map. All inode but dirs who have the nodump attribute go
285 SETINO(ino
, usedinomap
);
288 do_exclude_ino(ino
, "nodump attribute");
291 SETINO(ino
, dumpdirmap
);
292 if (WANTTODUMP(dp
, ino
)) {
293 SETINO(ino
, dumpinomap
);
294 if (!MSINCE(dp
, (u_int32_t
)spcl
.c_ddate
))
295 SETINO(ino
, metainomap
);
296 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
299 *tapesize
+= blockest(dp
);
303 if (exclude_ino(ino
))
304 CLRINO(ino
, usedinomap
);
312 * Walk the inode list for a filesystem to find all allocated inodes
313 * that have been modified since the previous dump time. Also, find all
314 * the directories in the filesystem.
318 mapfiles(UNUSED(dump_ino_t maxino
), long long *tapesize
)
321 int anydirskipped
= 0;
322 ext2_inode_scan scan
;
324 struct ext2_inode inode
;
327 * We use libext2fs's inode scanning routines, which are particularly
328 * robust. (Note that getino cannot return an error.)
330 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
332 com_err(disk
, err
, "while opening inodes\n");
336 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
337 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
340 com_err(disk
, err
, "while scanning inode #%ld\n",
348 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
351 ext2fs_close_inode_scan(scan
);
354 * Restore gets very upset if the root is not dumped,
355 * so ensure that it always is dumped.
357 SETINO(ROOTINO
, dumpinomap
);
358 return (anydirskipped
);
362 mapfiles(dump_ino_t maxino
, long long *tapesize
)
365 int anydirskipped
= 0;
367 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
368 mapfileino(ino
, tapesize
, &anydirskipped
);
371 * Restore gets very upset if the root is not dumped,
372 * so ensure that it always is dumped.
374 SETINO(ROOTINO
, dumpinomap
);
375 return (anydirskipped
);
377 #endif /* __linux__ */
381 maponefile(UNUSED(dump_ino_t maxino
), long long *tapesize
, char *directory
)
385 char dir_name
[MAXPATHLEN
];
386 int i
, anydirskipped
= 0;
389 * Mark every directory in the path as being dumped
391 for (i
= 0; i
< (int)strlen (directory
); i
++) {
392 if (directory
[i
] == '/') {
393 strncpy (dir_name
, directory
, i
);
395 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
,
398 com_err(disk
, retval
,
399 "while translating %s", dir_name
);
402 mapfileino((dump_ino_t
) dir_ino
, 0,
403 tapesize
, &anydirskipped
);
407 * Mark the final directory
409 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
411 com_err(disk
, retval
, "while translating %s", directory
);
414 mapfileino((dump_ino_t
)dir_ino
, 0, tapesize
, &anydirskipped
);
416 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
419 * Restore gets very upset if the root is not dumped,
420 * so ensure that it always is dumped.
422 SETINO(ROOTINO
, dumpdirmap
);
423 return anydirskipped
;
425 #endif /* __linux__ */
428 struct mapfile_context
{
434 mapfilesindir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
435 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
437 struct dinode
const *dp
;
440 struct mapfile_context
*mfc
;
444 mfc
= (struct mapfile_context
*)private;
445 dp
= getino(dirent
->inode
);
447 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
449 mode
= dp
->di_mode
& IFMT
;
450 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
451 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
452 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
453 ( dirent
->name_len
& 0xFF ) != 2)) {
454 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
455 mapfilesindir
, private);
466 * Walk the inode list for a filesystem to find all allocated inodes
467 * that have been modified since the previous dump time. Also, find all
468 * the directories in the filesystem.
471 mapfilesfromdir(UNUSED(dump_ino_t maxino
), long long *tapesize
, char *directory
)
474 struct mapfile_context mfc
;
476 char dir_name
[MAXPATHLEN
];
477 int i
, anydirskipped
= 0;
480 * Mark every directory in the path as being dumped
482 for (i
= 0; i
< (int)strlen (directory
); i
++) {
483 if (directory
[i
] == '/') {
484 strncpy (dir_name
, directory
, i
);
486 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
489 com_err(disk
, retval
, "while translating %s",
493 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
497 * Mark the final directory
499 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
501 com_err(disk
, retval
, "while translating %s", directory
);
504 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
506 mfc
.tapesize
= tapesize
;
507 mfc
.anydirskipped
= &anydirskipped
;
508 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
512 com_err(disk
, retval
, "while mapping files in %s", directory
);
516 * Ensure that the root inode actually appears in the file list
519 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
521 * Restore gets very upset if the root is not dumped,
522 * so ensure that it always is dumped.
524 SETINO(ROOTINO
, dumpinomap
);
525 return anydirskipped
;
530 struct mapdirs_context
{
540 * Scan each directory on the filesystem to see if it has any modified
541 * files in it. If it does, and has not already been added to the dump
542 * list (because it was itself modified), then add it. If a directory
543 * has not been modified itself, contains no modified files and has no
544 * subdirectories, then it can be deleted from the dump list and from
545 * the list of directories. By deleting it from the list of directories,
546 * its parent may now qualify for the same treatment on this or a later
547 * pass using this algorithm.
550 mapdirs(dump_ino_t maxino
, long long *tapesize
)
560 struct mapdirs_context mdc
;
562 int ret
, change
= 0, nodump
;
564 isdir
= 0; /* XXX just to get gcc to shut up */
565 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
566 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
571 * If dir has been removed from the used map, it's either
572 * because it had the nodump flag, or it herited it from
573 * its parent. A directory can't be in dumpinomap if not
574 * in usedinomap, but we have to go through it anyway
575 * to propagate the nodump attribute.
577 if ((isdir
& 1) == 0)
579 nodump
= (TSTINO(ino
, usedinomap
) == 0);
580 if (TSTINO(ino
, dumpinomap
) && nodump
== 0)
587 mdc
.tapesize
= tapesize
;
588 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
589 #else /* __linux__ */
590 filesize
= dp
->di_size
;
591 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
592 if (dp
->di_db
[i
] != 0)
593 ret
|= searchdir(ino
, dp
->di_db
[i
],
594 (long)dblksize(sblock
, dp
, i
),
596 if (ret
& HASDUMPEDFILE
)
599 filesize
-= sblock
->fs_bsize
;
601 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
602 if (dp
->di_ib
[i
] == 0)
604 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
606 #endif /* __linux__ */
607 if (ret
& HASDUMPEDFILE
) {
608 SETINO(ino
, dumpinomap
);
609 *tapesize
+= blockest(dp
);
614 if (ret
& HASSUBDIRS
)
615 change
= 1; /* subdirs have inherited nodump */
616 CLRINO(ino
, dumpdirmap
);
617 } else if ((ret
& HASSUBDIRS
) == 0) {
618 if (!TSTINO(ino
, dumpinomap
)) {
619 CLRINO(ino
, dumpdirmap
);
629 * Read indirect blocks, and pass the data blocks to be searched
630 * as directories. Quit as soon as any entry is found that will
631 * require the directory to be dumped.
634 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
638 daddr_t idblk
[MAXNINDIR
];
640 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
641 if (ind_level
<= 0) {
642 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
645 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
647 if (ret
& HASDUMPEDFILE
)
650 *filesize
-= sblock
->fs_bsize
;
655 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
658 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
662 #endif /* !__linux__ */
665 * Scan a disk block containing directory information looking to see if
666 * any of the entries are on the dump list and to see if the directory
667 * contains any subdirectories.
671 searchdir(struct ext2_dir_entry
*dp
, UNUSED(int offset
),
672 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
674 struct mapdirs_context
*mdc
;
679 mdc
= (struct mapdirs_context
*)private;
681 tapesize
= mdc
->tapesize
;
685 if (dp
->name
[0] == '.') {
686 if (( dp
->name_len
& 0xFF ) == 1)
688 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
692 ip
= getino(dp
->inode
);
693 if (TSTINO(dp
->inode
, dumpinomap
)) {
694 CLRINO(dp
->inode
, dumpinomap
);
695 *tapesize
-= blockest(ip
);
697 /* Add dir back to the dir map and remove from
698 * usedinomap to propagate nodump */
699 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
700 SETINO(dp
->inode
, dumpdirmap
);
701 CLRINO(dp
->inode
, usedinomap
);
705 if (TSTINO(dp
->inode
, dumpinomap
)) {
706 *ret
|= HASDUMPEDFILE
;
707 if (*ret
& HASSUBDIRS
)
710 if (TSTINO(dp
->inode
, dumpdirmap
)) {
712 if (*ret
& HASDUMPEDFILE
)
719 #else /* __linux__ */
722 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
728 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
731 for (loc
= 0; loc
< size
; ) {
732 dp
= (struct direct
*)(dblk
+ loc
);
733 if (dp
->d_reclen
== 0) {
734 msg("corrupted directory, inumber %d\n", ino
);
740 if (dp
->d_name
[0] == '.') {
741 if (dp
->d_name
[1] == '\0')
743 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
746 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
747 ret
|= HASDUMPEDFILE
;
748 if (ret
& HASSUBDIRS
)
751 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
753 if (ret
& HASDUMPEDFILE
)
759 #endif /* __linux__ */
763 struct block_context
{
772 * Dump a block to the tape
775 dumponeblock(UNUSED(ext2_filsys fs
), blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
776 UNUSED(blk_t ref_block
), UNUSED(int ref_offset
), void * private)
778 struct block_context
*p
;
781 p
= (struct block_context
*)private;
782 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
783 p
->buf
[p
->cnt
++] = 0;
784 if (p
->cnt
== p
->max
) {
785 blksout (p
->buf
, p
->cnt
, p
->ino
);
789 p
->buf
[p
->cnt
++] = *blocknr
;
790 if (p
->cnt
== p
->max
) {
791 blksout (p
->buf
, p
->cnt
, p
->ino
);
794 p
->next_block
= blockcnt
+ 1;
800 dump_xattr(dump_ino_t ino
, struct dinode
*dp
) {
802 if (dp
->di_extraisize
!= 0) {
803 #ifdef HAVE_EXT2FS_READ_INODE_FULL
804 char inode
[EXT2_INODE_SIZE(fs
->super
)];
808 memset(inode
, 0, EXT2_INODE_SIZE(fs
->super
));
809 err
= ext2fs_read_inode_full(fs
, (ext2_ino_t
)ino
,
810 (struct ext2_inode
*) inode
,
811 EXT2_INODE_SIZE(fs
->super
));
813 com_err(disk
, err
, "while reading inode #%ld\n", (long)ino
);
817 magic
= (void *)inode
+ EXT2_GOOD_OLD_INODE_SIZE
+ dp
->di_extraisize
;
818 if (*magic
== EXT2_XATTR_MAGIC
) {
819 char xattr
[EXT2_INODE_SIZE(fs
->super
)];
824 msg("dumping EA (inode) in inode #%ld\n", (long)ino
);
825 memset(xattr
, 0, EXT2_INODE_SIZE(fs
->super
));
826 memcpy(xattr
, (void *)magic
,
827 EXT2_INODE_SIZE(fs
->super
) -
828 (EXT2_GOOD_OLD_INODE_SIZE
+ dp
->di_extraisize
));
829 magic
= (u_int32_t
*)xattr
;
830 *magic
= EXT2_XATTR_MAGIC2
;
832 spcl
.c_type
= TS_INODE
;
833 spcl
.c_dinode
.di_size
= EXT2_INODE_SIZE(fs
->super
);
834 spcl
.c_flags
|= DR_EXTATTRIBUTES
;
835 spcl
.c_extattributes
= EXT_XATTR
;
836 spcl
.c_count
= howmany(EXT2_INODE_SIZE(fs
->super
), TP_BSIZE
);
837 for (i
= 0; i
< spcl
.c_count
; i
++)
840 for (i
= 0, cp
= xattr
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
842 spcl
.c_flags
&= ~DR_EXTATTRIBUTES
;
843 spcl
.c_extattributes
= 0;
848 if (dp
->di_file_acl
) {
851 msg("dumping EA (block) in inode #%ld\n", (long)ino
);
853 spcl
.c_type
= TS_INODE
;
854 spcl
.c_dinode
.di_size
= sblock
->fs_bsize
;
855 spcl
.c_flags
|= DR_EXTATTRIBUTES
;
856 spcl
.c_extattributes
= EXT_XATTR
;
857 blksout(&dp
->di_file_acl
, EXT2_FRAGS_PER_BLOCK(fs
->super
), ino
);
858 spcl
.c_flags
&= ~DR_EXTATTRIBUTES
;
859 spcl
.c_extattributes
= 0;
864 * Dump passes 3 and 4.
866 * Dump the contents of an inode to tape.
869 dumpino(struct dinode
*dp
, dump_ino_t ino
, int metaonly
)
872 fsizeT size
, remaining
;
874 struct new_bsd_inode nbi
;
877 struct block_context bc
;
886 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
890 dumpmap(dumpinomap
, TS_BITS
, ino
);
892 CLRINO(ino
, dumpinomap
);
894 memset(&nbi
, 0, sizeof(nbi
));
895 nbi
.di_mode
= dp
->di_mode
;
896 nbi
.di_nlink
= dp
->di_nlink
;
897 nbi
.di_ouid
= dp
->di_uid
;
898 nbi
.di_ogid
= dp
->di_gid
;
899 nbi
.di_size
= i_size
;
900 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
901 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
902 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
903 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
904 nbi
.di_flags
= dp
->di_flags
;
905 nbi
.di_blocks
= dp
->di_blocks
;
906 nbi
.di_gen
= dp
->di_gen
;
907 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
908 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
909 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
910 #else /* __linux__ */
912 #endif /* __linux__ */
913 spcl
.c_type
= TS_INODE
;
916 if (metaonly
&& (dp
->di_mode
& S_IFMT
)) {
917 spcl
.c_flags
|= DR_METAONLY
;
920 spcl
.c_flags
&= ~DR_METAONLY
;
925 switch (dp
->di_mode
& S_IFMT
) {
935 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
941 * Check for short symbolic link.
945 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
949 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
950 buf
[dp
->di_size
] = '\0';
955 #endif /* __linux__ */
957 if (dp
->di_size
> 0 &&
958 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
962 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
963 buf
[dp
->di_size
] = '\0';
987 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
991 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
992 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
995 bc
.next_block
= NDADDR
;
997 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, BLOCK_FLAG_DATA_ONLY
, NULL
, dumponeblock
, (void *)&bc
);
998 /* deal with holes at the end of the inode */
999 if (i_size
> ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
) {
1000 remaining
= i_size
- ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
;
1001 for (i
= 0; i
< (int)howmany(remaining
, sblock
->fs_fsize
); i
++) {
1002 bc
.buf
[bc
.cnt
++] = 0;
1003 if (bc
.cnt
== bc
.max
) {
1004 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
1010 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
1013 dump_xattr(ino
, dp
);
1015 if (i_size
> (u_quad_t
)NDADDR
* sblock
->fs_bsize
)
1016 cnt
= NDADDR
* sblock
->fs_frag
;
1018 cnt
= howmany(i_size
, sblock
->fs_fsize
);
1019 blksout(&dp
->di_db
[0], cnt
, ino
);
1020 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0) {
1021 dump_xattr(ino
, dp
);
1024 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
1025 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
1034 struct convert_dir_context
{
1042 * This function converts an ext2fs directory entry to the BSD format.
1044 * Basically, it adds a null-character at the end of the name, recomputes the
1045 * size of the entry, and creates it in a temporary buffer
1048 convert_dir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
1049 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
1051 struct convert_dir_context
*p
;
1055 /* do not save entries to excluded inodes */
1056 if (exclude_ino(dirent
->inode
))
1059 p
= (struct convert_dir_context
*)private;
1061 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
1062 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
1063 dp
= (struct direct
*)(p
->buf
+ p
->prev_offset
);
1064 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
1065 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
1068 dp
= (struct direct
*)(p
->buf
+ p
->offset
);
1069 dp
->d_ino
= dirent
->inode
;
1070 dp
->d_reclen
= reclen
;
1071 dp
->d_namlen
= dirent
->name_len
& 0xFF;
1072 switch ((dirent
->name_len
& 0xFF00) >> 8) {
1074 dp
->d_type
= DT_UNKNOWN
;
1076 case EXT2_FT_REG_FILE
:
1077 dp
->d_type
= DT_REG
;
1080 dp
->d_type
= DT_DIR
;
1082 case EXT2_FT_CHRDEV
:
1083 dp
->d_type
= DT_CHR
;
1085 case EXT2_FT_BLKDEV
:
1086 dp
->d_type
= DT_BLK
;
1089 dp
->d_type
= DT_FIFO
;
1092 dp
->d_type
= DT_SOCK
;
1094 case EXT2_FT_SYMLINK
:
1095 dp
->d_type
= DT_LNK
;
1098 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
1099 dp
->d_name
[dp
->d_namlen
] = '\0';
1100 p
->prev_offset
= p
->offset
;
1101 p
->offset
+= reclen
;
1109 * Dumps a directory to tape after converting it to the BSD format
1112 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
1116 struct new_bsd_inode nbi
;
1117 struct convert_dir_context cdc
;
1119 struct ext2_dir_entry
*de
;
1124 dumpmap(dumpinomap
, TS_BITS
, ino
);
1126 CLRINO(ino
, dumpinomap
);
1129 * Convert the directory to the BSD format
1131 /* Allocate a buffer for the conversion (twice the size of the
1132 ext2fs directory to avoid problems ;-) */
1133 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
1134 if (cdc
.buf
== NULL
)
1135 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1136 (unsigned long)ino
);
1138 cdc
.prev_offset
= 0;
1139 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
1140 /* Do the conversion */
1141 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
1143 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
1146 /* Fix the last entry */
1147 if ((cdc
.offset
% cdc
.bs
) != 0) {
1148 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
1149 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1150 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1153 dir_size
= cdc
.offset
;
1156 memset(&nbi
, 0, sizeof(nbi
));
1157 nbi
.di_mode
= dp
->di_mode
;
1158 nbi
.di_nlink
= dp
->di_nlink
;
1159 nbi
.di_ouid
= dp
->di_uid
;
1160 nbi
.di_ogid
= dp
->di_gid
;
1161 nbi
.di_size
= dir_size
; /* (u_quad_t)dp->di_size; */
1162 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
1163 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
1164 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
1165 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
1166 nbi
.di_flags
= dp
->di_flags
;
1167 nbi
.di_blocks
= dp
->di_blocks
;
1168 nbi
.di_gen
= dp
->di_gen
;
1169 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
1170 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
1171 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
1172 #else /* __linux__ */
1173 spcl
.c_dinode
= *dp
;
1174 #endif /* __linux__ */
1175 spcl
.c_type
= TS_INODE
;
1177 switch (dp
->di_mode
& S_IFMT
) {
1188 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1193 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1194 dp
->di_mode
& IFMT
, ino
);
1197 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1201 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1203 spcl
.c_type
= TS_ADDR
;
1206 (void)free(cdc
.buf
);
1207 dump_xattr(ino
, dp
);
1209 #endif /* __linux__ */
1213 * Read indirect blocks, and pass the data blocks to be dumped.
1216 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1223 daddr_t idblk
[MAXNINDIR
];
1226 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1229 * My RedHat 4.0 system doesn't have these flags; I haven't
1230 * upgraded e2fsprogs yet
1232 #if defined(EXT2_FLAG_SWAP_BYTES)
1233 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1234 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1237 max
= sblock
->fs_bsize
>> 2;
1238 swapme
= (blk_t
*) idblk
;
1239 for (i
= 0; i
< max
; i
++, swapme
++)
1240 *swapme
= ext2fs_swab32(*swapme
);
1242 #endif /* __linux__ */
1244 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1245 if (ind_level
<= 0) {
1246 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1247 cnt
= howmany(*size
, sblock
->fs_fsize
);
1250 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1252 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1254 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1255 blksout(&idblk
[0], cnt
, ino
);
1259 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1260 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1268 * Collect up the data into tape record sized buffers and output them.
1271 blksout(blk_t
*blkp
, int frags
, dump_ino_t ino
)
1274 int i
, j
, count
, blks
, tbperdb
;
1276 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1277 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1278 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1279 if (i
+ TP_NINDIR
> blks
)
1282 count
= i
+ TP_NINDIR
;
1283 for (j
= i
; j
< count
; j
++)
1284 if (blkp
[j
/ tbperdb
] != 0)
1285 spcl
.c_addr
[j
- i
] = 1;
1287 spcl
.c_addr
[j
- i
] = 0;
1288 spcl
.c_count
= count
- i
;
1290 bp
= &blkp
[i
/ tbperdb
];
1291 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1293 if (j
+ tbperdb
<= count
)
1294 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1296 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1299 spcl
.c_type
= TS_ADDR
;
1304 * Dump a map to the tape.
1307 dumpmap(char *map
, int type
, dump_ino_t ino
)
1313 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1314 spcl
.c_dinode
.di_size
= mapsize
;
1316 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1320 #if defined(__linux__) && !defined(int32_t)
1321 #define int32_t __s32
1325 * Compute and fill in checksum information.
1328 mkchecksum(union u_spcl
*tmpspcl
)
1330 int32_t sum
, cnt
, *lp
;
1332 tmpspcl
->s_spcl
.c_checksum
= 0;
1333 lp
= (int32_t *)&tmpspcl
->s_spcl
;
1335 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1336 while (--cnt
>= 0) {
1342 tmpspcl
->s_spcl
.c_checksum
= CHECKSUM
- sum
;
1346 * Write a header record to the dump tape.
1349 writeheader(dump_ino_t ino
)
1351 spcl
.c_inumber
= ino
;
1352 spcl
.c_magic
= NFS_MAGIC
;
1353 mkchecksum((union u_spcl
*)&spcl
);
1354 writerec((char *)&spcl
, 1);
1359 getino(dump_ino_t inum
)
1361 static struct dinode dinode
;
1365 #ifdef HAVE_EXT2FS_READ_INODE_FULL
1366 err
= ext2fs_read_inode_full(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
, sizeof(struct dinode
));
1368 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1371 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1376 #else /* __linux__ */
1378 getino(dump_ino_t inum
)
1380 static daddr_t minino
, maxino
;
1381 static struct dinode inoblock
[MAXINOPB
];
1384 if (inum
>= minino
&& inum
< maxino
)
1385 return (&inoblock
[inum
- minino
]);
1386 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1387 (int)sblock
->fs_bsize
);
1388 minino
= inum
- (inum
% INOPB(sblock
));
1389 maxino
= minino
+ INOPB(sblock
);
1390 return (&inoblock
[inum
- minino
]);
1392 #endif /* __linux__ */
1395 * Read a chunk of data from the disk.
1396 * Try to recover from hard errors by reading in sector sized pieces.
1397 * Error recovery is attempted at most BREADEMAX times before seeking
1398 * consent from the operator to continue.
1400 int breaderrors
= 0;
1403 bread(ext2_loff_t blkno
, char *buf
, int size
)
1409 if (ext2fs_llseek(diskfd
, (blkno
<< dev_bshift
), 0) !=
1410 (blkno
<< dev_bshift
))
1412 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1413 ((off_t
)blkno
<< dev_bshift
))
1415 msg("bread: lseek fails\n");
1416 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1418 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1420 * Trying to read the final fragment.
1422 * NB - dump only works in TP_BSIZE blocks, hence
1423 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1424 * It should be smarter about not actually trying to
1425 * read more than it can get, but for the time being
1426 * we punt and scale back the read only when it gets
1427 * us into trouble. (mkm 9/25/83)
1433 msg("read error from %s: %s: [block %d, ext2blk %d]: count=%d\n",
1434 disk
, strerror(errno
), blkno
,
1435 dbtofsb(sblock
, blkno
), size
);
1437 msg("short read error from %s: [block %d, ext2blk %d]: count=%d, got=%d\n",
1438 disk
, blkno
, dbtofsb(sblock
, blkno
), size
, cnt
);
1439 if (breademax
&& ++breaderrors
> breademax
) {
1440 msg("More than %d block read errors from %d\n",
1442 broadcast("DUMP IS AILING!\n");
1443 msg("This is an unrecoverable error.\n");
1444 if (!query("Do you want to attempt to continue?")){
1451 * Zero buffer, then try to read each sector of buffer separately.
1453 memset(buf
, 0, size
);
1454 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1456 if (ext2fs_llseek(diskfd
, (blkno
<< dev_bshift
), 0) !=
1457 (blkno
<< dev_bshift
))
1459 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1460 ((off_t
)blkno
<< dev_bshift
))
1462 msg("bread: lseek2 fails!\n");
1463 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1466 msg("read error from %s: %s: [sector %d, ext2blk %d]: count=%d\n",
1467 disk
, strerror(errno
), blkno
,
1468 dbtofsb(sblock
, blkno
), dev_bsize
);
1471 msg("short read error from %s: [sector %d, ext2blk %d]: count=%d, got=%d\n",
1472 disk
, blkno
, dbtofsb(sblock
, blkno
), dev_bsize
, cnt
);