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. 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 1.54 2003/01/10 14:46:55 stelian Exp $";
50 #include <sys/types.h>
57 #include <sys/param.h>
60 #ifdef HAVE_EXT2FS_EXT2_FS_H
61 #include <ext2fs/ext2_fs.h>
63 #include <linux/ext2_fs.h>
65 #include <ext2fs/ext2fs.h>
66 #include <bsdcompat.h>
67 #include <compaterr.h>
70 #include <sys/vnode.h>
73 #include <ufs/fsdir.h>
74 #include <ufs/inode.h>
76 #include <ufs/ufs/dir.h>
77 #include <ufs/ufs/dinode.h>
78 #include <ufs/ffs/fs.h>
79 #endif /* __linux__ */
81 #include <protocols/dumprestore.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((dump_ino_t ino
, daddr_t blkno
, int level
, long *size
));
103 static void dmpindir
__P((dump_ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
104 static int searchdir
__P((dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
));
106 static void mapfileino
__P((dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
));
108 #ifdef HAVE_EXT2_JOURNAL_INUM
109 #define ext2_journal_ino(sb) (sb->s_journal_inum)
111 #define ext2_journal_ino(sb) (*((u_int32_t *)sb + 0x38))
113 #ifndef HAVE_EXT2_INO_T
114 typedef ino_t ext2_ino_t
;
117 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
118 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
120 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
121 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
123 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
124 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
126 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
127 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
130 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
131 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
132 EXT2_FEATURE_INCOMPAT_FILETYPE)
134 #ifndef EXT2_RESIZE_INO
135 #define EXT2_RESIZE_INO 7
137 #ifndef EXT2_FT_UNKNOWN
138 #define EXT2_FT_UNKNOWN 0
139 #define EXT2_FT_REG_FILE 1
140 #define EXT2_FT_DIR 2
141 #define EXT2_FT_CHRDEV 3
142 #define EXT2_FT_BLKDEV 4
143 #define EXT2_FT_FIFO 5
144 #define EXT2_FT_SOCK 6
145 #define EXT2_FT_SYMLINK 7
146 #define EXT2_FT_MAX 8
149 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
153 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
155 struct ext2_super_block
*es
= (*fs
)->super
;
156 dump_ino_t journal_ino
= ext2_journal_ino(es
);
158 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
159 msg("This is a journal, not a filesystem!\n");
160 retval
= EXT2_ET_UNSUPP_FEATURE
;
163 else if ((retval
= es
->s_feature_incompat
&
164 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
165 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
166 msg("Unsupported feature(s) 0x%x in filesystem\n",
168 retval
= EXT2_ET_UNSUPP_FEATURE
;
172 if (es
->s_feature_compat
&
173 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
175 do_exclude_ino(journal_ino
, "journal inode");
176 do_exclude_ino(EXT2_RESIZE_INO
, "resize inode");
183 * This is an estimation of the number of TP_BSIZE blocks in the file.
184 * It estimates the number of blocks in files with holes by assuming
185 * that all of the blocks accounted for by di_blocks are data blocks
186 * (when some of the blocks are usually used for indirect pointers);
187 * hence the estimate may be high.
190 blockest(struct dinode
const *dp
)
192 long blkest
, sizeest
;
196 * dp->di_size is the size of the file in bytes.
197 * dp->di_blocks stores the number of sectors actually in the file.
198 * If there are more sectors than the size would indicate, this just
199 * means that there are indirect blocks in the file or unused
200 * sectors in the last file block; we can safely ignore these
201 * (blkest = sizeest below).
202 * If the file is bigger than the number of sectors would indicate,
203 * then the file has holes in it. In this case we must use the
204 * block count to estimate the number of data blocks used, but
205 * we use the actual size for estimating the number of indirect
206 * dump blocks (sizeest vs. blkest in the indirect block
209 blkest
= howmany((u_quad_t
)dp
->di_blocks
* 512, TP_BSIZE
);
210 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
211 sizeest
= howmany(i_size
, TP_BSIZE
);
212 if (blkest
> sizeest
)
215 if (i_size
> (u_quad_t
)fs
->blocksize
* NDADDR
) {
216 /* calculate the number of indirect blocks on the dump tape */
218 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
219 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
222 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
223 /* calculate the number of indirect blocks on the dump tape */
225 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
232 /* Auxiliary macro to pick up files changed since previous dump. */
233 #define CSINCE(dp, t) \
234 ((dp)->di_ctime >= (t))
235 #define MSINCE(dp, t) \
236 ((dp)->di_mtime >= (t))
237 #define CHANGEDSINCE(dp, t) \
238 (CSINCE(dp, t) || MSINCE(dp, t))
240 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
242 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
244 #define NODUMP_FLAG(dp) 0
247 /* The WANTTODUMP macro decides whether a file should be dumped. */
248 #define WANTTODUMP(dp, ino) \
249 (CHANGEDSINCE(dp, ((u_int32_t)spcl.c_ddate)) && \
250 (!NODUMP_FLAG(dp)) && \
254 * Determine if given inode should be dumped. "dp" must either point to a
255 * copy of the given inode, or be NULL (in which case it is fetched.)
258 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
263 * Skip inode if we've already marked it for dumping
265 if (TSTINO(ino
, usedinomap
))
269 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
272 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
276 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
277 * used map. All inode but dirs who have the nodump attribute go
280 SETINO(ino
, usedinomap
);
283 SETINO(ino
, dumpdirmap
);
284 if (WANTTODUMP(dp
, ino
)) {
285 SETINO(ino
, dumpinomap
);
286 if (!MSINCE(dp
, (u_int32_t
)spcl
.c_ddate
))
287 SETINO(ino
, metainomap
);
288 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
291 *tapesize
+= blockest(dp
);
295 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
296 CLRINO(ino
, usedinomap
);
304 * Walk the inode list for a filesystem to find all allocated inodes
305 * that have been modified since the previous dump time. Also, find all
306 * the directories in the filesystem.
310 mapfiles(UNUSED(dump_ino_t maxino
), long *tapesize
)
313 int anydirskipped
= 0;
314 ext2_inode_scan scan
;
316 struct ext2_inode inode
;
319 * We use libext2fs's inode scanning routines, which are particularly
320 * robust. (Note that getino cannot return an error.)
322 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
324 com_err(disk
, err
, "while opening inodes\n");
328 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
329 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
332 com_err(disk
, err
, "while scanning inode #%ld\n",
340 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
343 ext2fs_close_inode_scan(scan
);
346 * Restore gets very upset if the root is not dumped,
347 * so ensure that it always is dumped.
349 SETINO(ROOTINO
, dumpinomap
);
350 return (anydirskipped
);
354 mapfiles(dump_ino_t maxino
, long *tapesize
)
357 int anydirskipped
= 0;
359 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
360 mapfileino(ino
, tapesize
, &anydirskipped
);
363 * Restore gets very upset if the root is not dumped,
364 * so ensure that it always is dumped.
366 SETINO(ROOTINO
, dumpinomap
);
367 return (anydirskipped
);
369 #endif /* __linux__ */
373 maponefile(UNUSED(dump_ino_t maxino
), long *tapesize
, char *directory
)
377 char dir_name
[MAXPATHLEN
];
378 int i
, anydirskipped
= 0;
381 * Mark every directory in the path as being dumped
383 for (i
= 0; i
< (int)strlen (directory
); i
++) {
384 if (directory
[i
] == '/') {
385 strncpy (dir_name
, directory
, i
);
387 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
,
390 com_err(disk
, retval
,
391 "while translating %s", dir_name
);
394 mapfileino((dump_ino_t
) dir_ino
, 0,
395 tapesize
, &anydirskipped
);
399 * Mark the final directory
401 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
403 com_err(disk
, retval
, "while translating %s", directory
);
406 mapfileino((dump_ino_t
)dir_ino
, 0, tapesize
, &anydirskipped
);
408 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
411 * Restore gets very upset if the root is not dumped,
412 * so ensure that it always is dumped.
414 SETINO(ROOTINO
, dumpdirmap
);
415 return anydirskipped
;
417 #endif /* __linux__ */
420 struct mapfile_context
{
426 mapfilesindir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
427 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
429 struct dinode
const *dp
;
432 struct mapfile_context
*mfc
;
436 mfc
= (struct mapfile_context
*)private;
437 dp
= getino(dirent
->inode
);
439 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
441 mode
= dp
->di_mode
& IFMT
;
442 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
443 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
444 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
445 ( dirent
->name_len
& 0xFF ) != 2)) {
446 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
447 mapfilesindir
, private);
458 * Walk the inode list for a filesystem to find all allocated inodes
459 * that have been modified since the previous dump time. Also, find all
460 * the directories in the filesystem.
463 mapfilesfromdir(UNUSED(dump_ino_t maxino
), long *tapesize
, char *directory
)
466 struct mapfile_context mfc
;
468 char dir_name
[MAXPATHLEN
];
469 int i
, anydirskipped
= 0;
472 * Mark every directory in the path as being dumped
474 for (i
= 0; i
< (int)strlen (directory
); i
++) {
475 if (directory
[i
] == '/') {
476 strncpy (dir_name
, directory
, i
);
478 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
481 com_err(disk
, retval
, "while translating %s",
485 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
489 * Mark the final directory
491 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
493 com_err(disk
, retval
, "while translating %s", directory
);
496 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
498 mfc
.tapesize
= tapesize
;
499 mfc
.anydirskipped
= &anydirskipped
;
500 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
504 com_err(disk
, retval
, "while mapping files in %s", directory
);
508 * Ensure that the root inode actually appears in the file list
511 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
513 * Restore gets very upset if the root is not dumped,
514 * so ensure that it always is dumped.
516 SETINO(ROOTINO
, dumpinomap
);
517 return anydirskipped
;
522 struct mapdirs_context
{
532 * Scan each directory on the filesystem to see if it has any modified
533 * files in it. If it does, and has not already been added to the dump
534 * list (because it was itself modified), then add it. If a directory
535 * has not been modified itself, contains no modified files and has no
536 * subdirectories, then it can be deleted from the dump list and from
537 * the list of directories. By deleting it from the list of directories,
538 * its parent may now qualify for the same treatment on this or a later
539 * pass using this algorithm.
542 mapdirs(dump_ino_t maxino
, long *tapesize
)
552 struct mapdirs_context mdc
;
554 int ret
, change
= 0, nodump
;
556 isdir
= 0; /* XXX just to get gcc to shut up */
557 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
558 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
563 * If dir has been removed from the used map, it's either
564 * because it had the nodump flag, or it herited it from
565 * its parent. A directory can't be in dumpinomap if not
566 * in usedinomap, but we have to go through it anyway
567 * to propagate the nodump attribute.
569 nodump
= (TSTINO(ino
, usedinomap
) == 0);
570 if ((isdir
& 1) == 0 ||
571 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
578 mdc
.tapesize
= tapesize
;
579 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
580 #else /* __linux__ */
581 filesize
= dp
->di_size
;
582 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
583 if (dp
->di_db
[i
] != 0)
584 ret
|= searchdir(ino
, dp
->di_db
[i
],
585 (long)dblksize(sblock
, dp
, i
),
587 if (ret
& HASDUMPEDFILE
)
590 filesize
-= sblock
->fs_bsize
;
592 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
593 if (dp
->di_ib
[i
] == 0)
595 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
597 #endif /* __linux__ */
598 if (ret
& HASDUMPEDFILE
) {
599 SETINO(ino
, dumpinomap
);
600 *tapesize
+= blockest(dp
);
605 if (ret
& HASSUBDIRS
)
606 change
= 1; /* subdirs have inherited nodump */
607 CLRINO(ino
, dumpdirmap
);
608 } else if ((ret
& HASSUBDIRS
) == 0) {
609 if (!TSTINO(ino
, dumpinomap
)) {
610 CLRINO(ino
, dumpdirmap
);
620 * Read indirect blocks, and pass the data blocks to be searched
621 * as directories. Quit as soon as any entry is found that will
622 * require the directory to be dumped.
625 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
629 daddr_t idblk
[MAXNINDIR
];
631 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
632 if (ind_level
<= 0) {
633 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
636 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
638 if (ret
& HASDUMPEDFILE
)
641 *filesize
-= sblock
->fs_bsize
;
646 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
649 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
653 #endif /* !__linux__ */
656 * Scan a disk block containing directory information looking to see if
657 * any of the entries are on the dump list and to see if the directory
658 * contains any subdirectories.
662 searchdir(struct ext2_dir_entry
*dp
, UNUSED(int offset
),
663 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
665 struct mapdirs_context
*mdc
;
670 mdc
= (struct mapdirs_context
*)private;
672 tapesize
= mdc
->tapesize
;
676 if (dp
->name
[0] == '.') {
677 if (( dp
->name_len
& 0xFF ) == 1)
679 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
683 ip
= getino(dp
->inode
);
684 if (TSTINO(dp
->inode
, dumpinomap
)) {
685 CLRINO(dp
->inode
, dumpinomap
);
686 *tapesize
-= blockest(ip
);
688 /* Add dir back to the dir map and remove from
689 * usedinomap to propagate nodump */
690 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
691 SETINO(dp
->inode
, dumpdirmap
);
692 CLRINO(dp
->inode
, usedinomap
);
696 if (TSTINO(dp
->inode
, dumpinomap
)) {
697 *ret
|= HASDUMPEDFILE
;
698 if (*ret
& HASSUBDIRS
)
701 if (TSTINO(dp
->inode
, dumpdirmap
)) {
703 if (*ret
& HASDUMPEDFILE
)
710 #else /* __linux__ */
713 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
719 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
722 for (loc
= 0; loc
< size
; ) {
723 dp
= (struct direct
*)(dblk
+ loc
);
724 if (dp
->d_reclen
== 0) {
725 msg("corrupted directory, inumber %d\n", ino
);
731 if (dp
->d_name
[0] == '.') {
732 if (dp
->d_name
[1] == '\0')
734 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
737 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
738 ret
|= HASDUMPEDFILE
;
739 if (ret
& HASSUBDIRS
)
742 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
744 if (ret
& HASDUMPEDFILE
)
750 #endif /* __linux__ */
754 struct block_context
{
763 * Dump a block to the tape
766 dumponeblock(UNUSED(ext2_filsys fs
), blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
767 UNUSED(blk_t ref_block
), UNUSED(int ref_offset
), void * private)
769 struct block_context
*p
;
772 if (blockcnt
< NDADDR
)
774 p
= (struct block_context
*)private;
775 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
776 p
->buf
[p
->cnt
++] = 0;
777 if (p
->cnt
== p
->max
) {
778 blksout (p
->buf
, p
->cnt
, p
->ino
);
782 p
->buf
[p
->cnt
++] = *blocknr
;
783 if (p
->cnt
== p
->max
) {
784 blksout (p
->buf
, p
->cnt
, p
->ino
);
787 p
->next_block
= blockcnt
+ 1;
793 * Dump passes 3 and 4.
795 * Dump the contents of an inode to tape.
798 dumpino(struct dinode
*dp
, dump_ino_t ino
, int metaonly
)
801 fsizeT size
, remaining
;
803 struct new_bsd_inode nbi
;
806 struct block_context bc
;
815 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
819 dumpmap(dumpinomap
, TS_BITS
, ino
);
821 CLRINO(ino
, dumpinomap
);
823 memset(&nbi
, 0, sizeof(nbi
));
824 nbi
.di_mode
= dp
->di_mode
;
825 nbi
.di_nlink
= dp
->di_nlink
;
826 nbi
.di_ouid
= dp
->di_uid
;
827 nbi
.di_ogid
= dp
->di_gid
;
828 nbi
.di_size
= i_size
;
829 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
830 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
831 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
832 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
833 nbi
.di_flags
= dp
->di_flags
;
834 nbi
.di_blocks
= dp
->di_blocks
;
835 nbi
.di_gen
= dp
->di_gen
;
836 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
837 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
839 msg("ACLs in inode #%ld won't be dumped\n", (long)ino
);
840 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
841 #else /* __linux__ */
843 #endif /* __linux__ */
844 spcl
.c_type
= TS_INODE
;
847 if (metaonly
&& (dp
->di_mode
& S_IFMT
)) {
848 spcl
.c_flags
|= DR_METAONLY
;
851 spcl
.c_flags
&= ~DR_METAONLY
;
855 switch (dp
->di_mode
& S_IFMT
) {
865 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
871 * Check for short symbolic link.
875 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
879 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
880 buf
[dp
->di_size
] = '\0';
884 #endif /* __linux__ */
886 if (dp
->di_size
> 0 &&
887 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
891 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
892 buf
[dp
->di_size
] = '\0';
915 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
918 if (i_size
> (u_quad_t
)NDADDR
* sblock
->fs_bsize
)
920 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
922 cnt
= NDADDR
* sblock
->fs_frag
;
925 cnt
= howmany(i_size
, sblock
->fs_fsize
);
926 blksout(&dp
->di_db
[0], cnt
, ino
);
927 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
930 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
931 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
934 bc
.next_block
= NDADDR
;
936 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
937 /* deal with holes at the end of the inode */
938 if (i_size
> ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
) {
939 remaining
= i_size
- ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
;
940 for (i
= 0; i
< (int)howmany(remaining
, sblock
->fs_fsize
); i
++) {
941 bc
.buf
[bc
.cnt
++] = 0;
942 if (bc
.cnt
== bc
.max
) {
943 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
949 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
953 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
954 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
963 struct convert_dir_context
{
971 * This function converts an ext2fs directory entry to the BSD format.
973 * Basically, it adds a null-character at the end of the name, recomputes the
974 * size of the entry, and creates it in a temporary buffer
977 convert_dir(struct ext2_dir_entry
*dirent
, UNUSED(int offset
),
978 UNUSED(int blocksize
), UNUSED(char *buf
), void *private)
980 struct convert_dir_context
*p
;
984 p
= (struct convert_dir_context
*)private;
986 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
987 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
988 dp
= (struct direct
*)(p
->buf
+ p
->prev_offset
);
989 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
990 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
993 dp
= (struct direct
*)(p
->buf
+ p
->offset
);
994 dp
->d_ino
= dirent
->inode
;
995 dp
->d_reclen
= reclen
;
996 dp
->d_namlen
= dirent
->name_len
& 0xFF;
997 switch ((dirent
->name_len
& 0xFF00) >> 8) {
999 dp
->d_type
= DT_UNKNOWN
;
1001 case EXT2_FT_REG_FILE
:
1002 dp
->d_type
= DT_REG
;
1005 dp
->d_type
= DT_DIR
;
1007 case EXT2_FT_CHRDEV
:
1008 dp
->d_type
= DT_CHR
;
1010 case EXT2_FT_BLKDEV
:
1011 dp
->d_type
= DT_BLK
;
1014 dp
->d_type
= DT_FIFO
;
1017 dp
->d_type
= DT_SOCK
;
1019 case EXT2_FT_SYMLINK
:
1020 dp
->d_type
= DT_LNK
;
1023 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
1024 dp
->d_name
[dp
->d_namlen
] = '\0';
1025 p
->prev_offset
= p
->offset
;
1026 p
->offset
+= reclen
;
1034 * Dumps a directory to tape after converting it to the BSD format
1037 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
1041 struct new_bsd_inode nbi
;
1042 struct convert_dir_context cdc
;
1044 struct ext2_dir_entry
*de
;
1049 dumpmap(dumpinomap
, TS_BITS
, ino
);
1051 CLRINO(ino
, dumpinomap
);
1054 * Convert the directory to the BSD format
1056 /* Allocate a buffer for the conversion (twice the size of the
1057 ext2fs directory to avoid problems ;-) */
1058 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
1059 if (cdc
.buf
== NULL
)
1060 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1061 (unsigned long)ino
);
1063 cdc
.prev_offset
= 0;
1064 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
1065 /* Do the conversion */
1066 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
1068 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
1071 /* Fix the last entry */
1072 if ((cdc
.offset
% cdc
.bs
) != 0) {
1073 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
1074 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1075 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1078 dir_size
= cdc
.offset
;
1081 memset(&nbi
, 0, sizeof(nbi
));
1082 nbi
.di_mode
= dp
->di_mode
;
1083 nbi
.di_nlink
= dp
->di_nlink
;
1084 nbi
.di_ouid
= dp
->di_uid
;
1085 nbi
.di_ogid
= dp
->di_gid
;
1086 nbi
.di_size
= dir_size
; /* (u_quad_t)dp->di_size; */
1087 nbi
.di_atime
.tv_sec
= dp
->di_atime
;
1088 nbi
.di_mtime
.tv_sec
= dp
->di_mtime
;
1089 nbi
.di_ctime
.tv_sec
= dp
->di_ctime
;
1090 memmove(&nbi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
1091 nbi
.di_flags
= dp
->di_flags
;
1092 nbi
.di_blocks
= dp
->di_blocks
;
1093 nbi
.di_gen
= dp
->di_gen
;
1094 nbi
.di_uid
= (((int32_t)dp
->di_uidhigh
) << 16) | dp
->di_uid
;
1095 nbi
.di_gid
= (((int32_t)dp
->di_gidhigh
) << 16) | dp
->di_gid
;
1096 if (dp
->di_file_acl
)
1097 msg("ACLs in inode #%ld won't be dumped\n", (long)ino
);
1098 memmove(&spcl
.c_dinode
, &nbi
, sizeof(nbi
));
1099 #else /* __linux__ */
1100 spcl
.c_dinode
= *dp
;
1101 #endif /* __linux__ */
1102 spcl
.c_type
= TS_INODE
;
1104 switch (dp
->di_mode
& S_IFMT
) {
1115 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1120 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1121 dp
->di_mode
& IFMT
, ino
);
1124 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1128 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1130 spcl
.c_type
= TS_ADDR
;
1133 (void)free(cdc
.buf
);
1135 #endif /* __linux__ */
1139 * Read indirect blocks, and pass the data blocks to be dumped.
1142 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1149 daddr_t idblk
[MAXNINDIR
];
1152 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1155 * My RedHat 4.0 system doesn't have these flags; I haven't
1156 * upgraded e2fsprogs yet
1158 #if defined(EXT2_FLAG_SWAP_BYTES)
1159 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1160 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1163 max
= sblock
->fs_bsize
>> 2;
1164 swapme
= (blk_t
*) idblk
;
1165 for (i
= 0; i
< max
; i
++, swapme
++)
1166 *swapme
= ext2fs_swab32(*swapme
);
1168 #endif /* __linux__ */
1170 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1171 if (ind_level
<= 0) {
1172 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1173 cnt
= howmany(*size
, sblock
->fs_fsize
);
1176 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1178 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1180 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1181 blksout(&idblk
[0], cnt
, ino
);
1185 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1186 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1194 * Collect up the data into tape record sized buffers and output them.
1197 blksout(daddr_t
*blkp
, int frags
, dump_ino_t ino
)
1200 int i
, j
, count
, blks
, tbperdb
;
1202 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1203 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1204 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1205 if (i
+ TP_NINDIR
> blks
)
1208 count
= i
+ TP_NINDIR
;
1209 for (j
= i
; j
< count
; j
++)
1210 if (blkp
[j
/ tbperdb
] != 0)
1211 spcl
.c_addr
[j
- i
] = 1;
1213 spcl
.c_addr
[j
- i
] = 0;
1214 spcl
.c_count
= count
- i
;
1216 bp
= &blkp
[i
/ tbperdb
];
1217 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1219 if (j
+ tbperdb
<= count
)
1220 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1222 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1225 spcl
.c_type
= TS_ADDR
;
1230 * Dump a map to the tape.
1233 dumpmap(char *map
, int type
, dump_ino_t ino
)
1239 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1241 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1245 #if defined __linux__ && !defined(int32_t)
1246 #define int32_t __s32
1250 * Compute and fill in checksum information.
1253 mkchecksum(union u_spcl
*tmpspcl
)
1255 int32_t sum
, cnt
, *lp
;
1257 tmpspcl
->s_spcl
.c_checksum
= 0;
1258 lp
= (int32_t *)&tmpspcl
->s_spcl
;
1260 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1261 while (--cnt
>= 0) {
1267 tmpspcl
->s_spcl
.c_checksum
= CHECKSUM
- sum
;
1271 * Write a header record to the dump tape.
1274 writeheader(dump_ino_t ino
)
1276 spcl
.c_inumber
= ino
;
1277 spcl
.c_magic
= NFS_MAGIC
;
1278 mkchecksum((union u_spcl
*)&spcl
);
1279 writerec((char *)&spcl
, 1);
1284 getino(dump_ino_t inum
)
1286 static struct dinode dinode
;
1290 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1292 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1297 #else /* __linux__ */
1299 getino(dump_ino_t inum
)
1301 static daddr_t minino
, maxino
;
1302 static struct dinode inoblock
[MAXINOPB
];
1305 if (inum
>= minino
&& inum
< maxino
)
1306 return (&inoblock
[inum
- minino
]);
1307 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1308 (int)sblock
->fs_bsize
);
1309 minino
= inum
- (inum
% INOPB(sblock
));
1310 maxino
= minino
+ INOPB(sblock
);
1311 return (&inoblock
[inum
- minino
]);
1313 #endif /* __linux__ */
1316 * Read a chunk of data from the disk.
1317 * Try to recover from hard errors by reading in sector sized pieces.
1318 * Error recovery is attempted at most breademax times before seeking
1319 * consent from the operator to continue.
1321 int breaderrors
= 0;
1324 bread(daddr_t blkno
, char *buf
, int size
)
1330 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1331 (((ext2_loff_t
)blkno
) << dev_bshift
))
1333 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1334 ((off_t
)blkno
<< dev_bshift
))
1336 msg("bread: lseek fails\n");
1337 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1339 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1341 * Trying to read the final fragment.
1343 * NB - dump only works in TP_BSIZE blocks, hence
1344 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1345 * It should be smarter about not actually trying to
1346 * read more than it can get, but for the time being
1347 * we punt and scale back the read only when it gets
1348 * us into trouble. (mkm 9/25/83)
1354 msg("read error from %s: %s: [block %d, ext2blk %d]: count=%d\n",
1355 disk
, strerror(errno
), blkno
,
1356 dbtofsb(sblock
, blkno
), size
);
1358 msg("short read error from %s: [block %d, ext2blk %d]: count=%d, got=%d\n",
1359 disk
, blkno
, dbtofsb(sblock
, blkno
), size
, cnt
);
1360 if (breademax
&& ++breaderrors
> breademax
) {
1361 msg("More than %d block read errors from %d\n",
1363 broadcast("DUMP IS AILING!\n");
1364 msg("This is an unrecoverable error.\n");
1365 if (!query("Do you want to attempt to continue?")){
1372 * Zero buffer, then try to read each sector of buffer separately.
1374 memset(buf
, 0, size
);
1375 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1377 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1378 (((ext2_loff_t
)blkno
) << dev_bshift
))
1380 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1381 ((off_t
)blkno
<< dev_bshift
))
1383 msg("bread: lseek2 fails!\n");
1384 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1387 msg("read error from %s: %s: [sector %d, ext2blk %d]: count=%d\n",
1388 disk
, strerror(errno
), blkno
,
1389 dbtofsb(sblock
, blkno
), dev_bsize
);
1392 msg("short read error from %s: [sector %d, ext2blk %d]: count=%d, got=%d\n",
1393 disk
, blkno
, dbtofsb(sblock
, blkno
), dev_bsize
, cnt
);