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 1.43 2002/02/04 11:18:46 stelian Exp $";
55 #include <sys/param.h>
58 #ifdef HAVE_EXT2FS_EXT2_FS_H
59 #include <ext2fs/ext2_fs.h>
61 #include <linux/ext2_fs.h>
63 #include <ext2fs/ext2fs.h>
64 #include <bsdcompat.h>
65 #include <compaterr.h>
68 #include <sys/vnode.h>
71 #include <ufs/fsdir.h>
72 #include <ufs/inode.h>
74 #include <ufs/ufs/dir.h>
75 #include <ufs/ufs/dinode.h>
76 #include <ufs/ffs/fs.h>
77 #endif /* __linux__ */
79 #include <protocols/dumprestore.h>
83 #define HASDUMPEDFILE 0x1
84 #define HASSUBDIRS 0x2
87 typedef u_quad_t fsizeT
;
90 typedef quad_t fsizeT
;
97 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
98 int blocksize
, char *buf
, void *private));
100 static int dirindir
__P((dump_ino_t ino
, daddr_t blkno
, int level
, long *size
));
101 static void dmpindir
__P((dump_ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
102 static int searchdir
__P((dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
));
104 static void mapfileino
__P((dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
));
106 #ifdef HAVE_EXT2_JOURNAL_INUM
107 #define ext2_journal_ino(sb) (sb->s_journal_inum)
109 #define ext2_journal_ino(sb) (*((__u32 *)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
136 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
140 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
142 struct ext2_super_block
*es
= (*fs
)->super
;
143 dump_ino_t journal_ino
= ext2_journal_ino(es
);
145 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
146 msg("This is a journal, not a filesystem!\n");
147 retval
= EXT2_ET_UNSUPP_FEATURE
;
150 else if ((retval
= es
->s_feature_incompat
&
151 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
152 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
153 msg("Unsupported feature(s) 0x%x in filesystem\n",
155 retval
= EXT2_ET_UNSUPP_FEATURE
;
159 if (es
->s_feature_compat
&
160 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
162 do_exclude_ino(journal_ino
, "journal inode");
163 do_exclude_ino(EXT2_RESIZE_INO
, "resize inode");
170 * This is an estimation of the number of TP_BSIZE blocks in the file.
171 * It estimates the number of blocks in files with holes by assuming
172 * that all of the blocks accounted for by di_blocks are data blocks
173 * (when some of the blocks are usually used for indirect pointers);
174 * hence the estimate may be high.
177 blockest(struct dinode
const *dp
)
179 long blkest
, sizeest
;
183 * dp->di_size is the size of the file in bytes.
184 * dp->di_blocks stores the number of sectors actually in the file.
185 * If there are more sectors than the size would indicate, this just
186 * means that there are indirect blocks in the file or unused
187 * sectors in the last file block; we can safely ignore these
188 * (blkest = sizeest below).
189 * If the file is bigger than the number of sectors would indicate,
190 * then the file has holes in it. In this case we must use the
191 * block count to estimate the number of data blocks used, but
192 * we use the actual size for estimating the number of indirect
193 * dump blocks (sizeest vs. blkest in the indirect block
196 blkest
= howmany((u_quad_t
)dp
->di_blocks
*fs
->blocksize
, TP_BSIZE
);
197 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
198 sizeest
= howmany(i_size
, TP_BSIZE
);
199 if (blkest
> sizeest
)
202 if (i_size
> fs
->blocksize
* NDADDR
) {
203 /* calculate the number of indirect blocks on the dump tape */
205 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
206 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
209 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
210 /* calculate the number of indirect blocks on the dump tape */
212 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
219 /* Auxiliary macro to pick up files changed since previous dump. */
220 #define CHANGEDSINCE(dp, t) \
221 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
223 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
225 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
227 #define NODUMP_FLAG(dp) 0
230 /* The WANTTODUMP macro decides whether a file should be dumped. */
231 #define WANTTODUMP(dp, ino) \
232 (CHANGEDSINCE(dp, spcl.c_ddate) && \
233 (!NODUMP_FLAG(dp)) && \
237 * Determine if given inode should be dumped. "dp" must either point to a
238 * copy of the given inode, or be NULL (in which case it is fetched.)
241 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
246 * Skip inode if we've already marked it for dumping
248 if (TSTINO(ino
, usedinomap
))
252 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
255 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
259 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
260 * used map. All inode but dirs who have the nodump attribute go
263 SETINO(ino
, usedinomap
);
266 SETINO(ino
, dumpdirmap
);
267 if (WANTTODUMP(dp
, ino
)) {
268 SETINO(ino
, dumpinomap
);
269 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
272 *tapesize
+= blockest(dp
);
276 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
277 CLRINO(ino
, usedinomap
);
285 * Walk the inode list for a filesystem to find all allocated inodes
286 * that have been modified since the previous dump time. Also, find all
287 * the directories in the filesystem.
291 mapfiles(dump_ino_t maxino
, long *tapesize
)
294 int anydirskipped
= 0;
295 ext2_inode_scan scan
;
297 struct ext2_inode inode
;
300 * We use libext2fs's inode scanning routines, which are particularly
301 * robust. (Note that getino cannot return an error.)
303 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
305 com_err(disk
, err
, "while opening inodes\n");
309 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
310 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
313 com_err(disk
, err
, "while scanning inode #%ld\n",
321 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
324 ext2fs_close_inode_scan(scan
);
327 * Restore gets very upset if the root is not dumped,
328 * so ensure that it always is dumped.
330 SETINO(ROOTINO
, dumpinomap
);
331 return (anydirskipped
);
335 mapfiles(dump_ino_t maxino
, long *tapesize
)
338 int anydirskipped
= 0;
340 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
341 mapfileino(ino
, tapesize
, &anydirskipped
);
344 * Restore gets very upset if the root is not dumped,
345 * so ensure that it always is dumped.
347 SETINO(ROOTINO
, dumpinomap
);
348 return (anydirskipped
);
350 #endif /* __linux__ */
354 maponefile(dump_ino_t maxino
, long *tapesize
, char *directory
)
358 char dir_name
[MAXPATHLEN
];
359 int i
, anydirskipped
= 0;
362 * Mark every directory in the path as being dumped
364 for (i
= 0; i
< strlen (directory
); i
++) {
365 if (directory
[i
] == '/') {
366 strncpy (dir_name
, directory
, i
);
368 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
,
371 com_err(disk
, retval
,
372 "while translating %s", dir_name
);
375 mapfileino((dump_ino_t
) dir_ino
, 0,
376 tapesize
, &anydirskipped
);
380 * Mark the final directory
382 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
384 com_err(disk
, retval
, "while translating %s", directory
);
387 mapfileino((dump_ino_t
)dir_ino
, 0, tapesize
, &anydirskipped
);
389 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
392 * Restore gets very upset if the root is not dumped,
393 * so ensure that it always is dumped.
395 SETINO(ROOTINO
, dumpdirmap
);
396 return anydirskipped
;
398 #endif /* __linux__ */
401 struct mapfile_context
{
407 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
409 struct dinode
const *dp
;
412 struct mapfile_context
*mfc
;
416 mfc
= (struct mapfile_context
*)private;
417 dp
= getino(dirent
->inode
);
419 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
421 mode
= dp
->di_mode
& IFMT
;
422 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
423 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
424 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
425 ( dirent
->name_len
& 0xFF ) != 2)) {
426 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
427 mapfilesindir
, private);
438 * Walk the inode list for a filesystem to find all allocated inodes
439 * that have been modified since the previous dump time. Also, find all
440 * the directories in the filesystem.
443 mapfilesfromdir(dump_ino_t maxino
, long *tapesize
, char *directory
)
446 struct mapfile_context mfc
;
448 char dir_name
[MAXPATHLEN
];
449 int i
, anydirskipped
= 0;
452 * Mark every directory in the path as being dumped
454 for (i
= 0; i
< strlen (directory
); i
++) {
455 if (directory
[i
] == '/') {
456 strncpy (dir_name
, directory
, i
);
458 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
461 com_err(disk
, retval
, "while translating %s",
465 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
469 * Mark the final directory
471 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
473 com_err(disk
, retval
, "while translating %s", directory
);
476 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
478 mfc
.tapesize
= tapesize
;
479 mfc
.anydirskipped
= &anydirskipped
;
480 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
484 com_err(disk
, retval
, "while mapping files in %s", directory
);
488 * Ensure that the root inode actually appears in the file list
491 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
493 * Restore gets very upset if the root is not dumped,
494 * so ensure that it always is dumped.
496 SETINO(ROOTINO
, dumpinomap
);
497 return anydirskipped
;
502 struct mapdirs_context
{
512 * Scan each directory on the filesystem to see if it has any modified
513 * files in it. If it does, and has not already been added to the dump
514 * list (because it was itself modified), then add it. If a directory
515 * has not been modified itself, contains no modified files and has no
516 * subdirectories, then it can be deleted from the dump list and from
517 * the list of directories. By deleting it from the list of directories,
518 * its parent may now qualify for the same treatment on this or a later
519 * pass using this algorithm.
522 mapdirs(dump_ino_t maxino
, long *tapesize
)
532 struct mapdirs_context mdc
;
534 int ret
, change
= 0, nodump
;
536 isdir
= 0; /* XXX just to get gcc to shut up */
537 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
538 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
543 * If dir has been removed from the used map, it's either
544 * because it had the nodump flag, or it herited it from
545 * its parent. A directory can't be in dumpinomap if not
546 * in usedinomap, but we have to go through it anyway
547 * to propagate the nodump attribute.
549 nodump
= (TSTINO(ino
, usedinomap
) == 0);
550 if ((isdir
& 1) == 0 ||
551 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
558 mdc
.tapesize
= tapesize
;
559 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
560 #else /* __linux__ */
561 filesize
= dp
->di_size
;
562 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
563 if (dp
->di_db
[i
] != 0)
564 ret
|= searchdir(ino
, dp
->di_db
[i
],
565 (long)dblksize(sblock
, dp
, i
),
567 if (ret
& HASDUMPEDFILE
)
570 filesize
-= sblock
->fs_bsize
;
572 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
573 if (dp
->di_ib
[i
] == 0)
575 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
577 #endif /* __linux__ */
578 if (ret
& HASDUMPEDFILE
) {
579 SETINO(ino
, dumpinomap
);
580 *tapesize
+= blockest(dp
);
585 if (ret
& HASSUBDIRS
)
586 change
= 1; /* subdirs have inherited nodump */
587 CLRINO(ino
, dumpdirmap
);
588 } else if ((ret
& HASSUBDIRS
) == 0) {
589 if (!TSTINO(ino
, dumpinomap
)) {
590 CLRINO(ino
, dumpdirmap
);
600 * Read indirect blocks, and pass the data blocks to be searched
601 * as directories. Quit as soon as any entry is found that will
602 * require the directory to be dumped.
605 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
609 daddr_t idblk
[MAXNINDIR
];
611 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
612 if (ind_level
<= 0) {
613 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
616 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
618 if (ret
& HASDUMPEDFILE
)
621 *filesize
-= sblock
->fs_bsize
;
626 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
629 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
633 #endif /* !__linux__ */
636 * Scan a disk block containing directory information looking to see if
637 * any of the entries are on the dump list and to see if the directory
638 * contains any subdirectories.
642 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
644 struct mapdirs_context
*mdc
;
649 mdc
= (struct mapdirs_context
*)private;
651 tapesize
= mdc
->tapesize
;
655 if (dp
->name
[0] == '.') {
656 if (( dp
->name_len
& 0xFF ) == 1)
658 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
662 ip
= getino(dp
->inode
);
663 if (TSTINO(dp
->inode
, dumpinomap
)) {
664 CLRINO(dp
->inode
, dumpinomap
);
665 CLRINO(dp
->inode
, usedinomap
);
666 *tapesize
-= blockest(ip
);
668 /* Add dir back to the dir map, to propagate nodump */
669 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
670 SETINO(dp
->inode
, dumpdirmap
);
674 if (TSTINO(dp
->inode
, dumpinomap
)) {
675 *ret
|= HASDUMPEDFILE
;
676 if (*ret
& HASSUBDIRS
)
679 if (TSTINO(dp
->inode
, dumpdirmap
)) {
681 if (*ret
& HASDUMPEDFILE
)
688 #else /* __linux__ */
691 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
697 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
700 for (loc
= 0; loc
< size
; ) {
701 dp
= (struct direct
*)(dblk
+ loc
);
702 if (dp
->d_reclen
== 0) {
703 msg("corrupted directory, inumber %d\n", ino
);
709 if (dp
->d_name
[0] == '.') {
710 if (dp
->d_name
[1] == '\0')
712 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
715 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
716 ret
|= HASDUMPEDFILE
;
717 if (ret
& HASSUBDIRS
)
720 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
722 if (ret
& HASDUMPEDFILE
)
728 #endif /* __linux__ */
732 struct block_context
{
741 * Dump a block to the tape
744 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
745 blk_t ref_block
, int ref_offset
, void * private)
747 struct block_context
*p
;
750 if (blockcnt
< NDADDR
)
752 p
= (struct block_context
*)private;
753 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
754 p
->buf
[p
->cnt
++] = 0;
755 if (p
->cnt
== p
->max
) {
756 blksout (p
->buf
, p
->cnt
, p
->ino
);
760 p
->buf
[p
->cnt
++] = *blocknr
;
761 if (p
->cnt
== p
->max
) {
762 blksout (p
->buf
, p
->cnt
, p
->ino
);
765 p
->next_block
= blockcnt
+ 1;
771 * Dump passes 3 and 4.
773 * Dump the contents of an inode to tape.
776 dumpino(struct dinode
*dp
, dump_ino_t ino
)
779 fsizeT size
, remaining
;
781 struct old_bsd_inode obi
;
784 struct block_context bc
;
788 u_quad_t i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
792 dumpmap(dumpinomap
, TS_BITS
, ino
);
794 CLRINO(ino
, dumpinomap
);
796 memset(&obi
, 0, sizeof(obi
));
797 obi
.di_mode
= dp
->di_mode
;
798 obi
.di_uid
= dp
->di_uid
;
799 obi
.di_gid
= dp
->di_gid
;
800 obi
.di_qsize
.v
= i_size
;
801 obi
.di_atime
= dp
->di_atime
;
802 obi
.di_mtime
= dp
->di_mtime
;
803 obi
.di_ctime
= dp
->di_ctime
;
804 obi
.di_nlink
= dp
->di_nlink
;
805 obi
.di_blocks
= dp
->di_blocks
;
806 obi
.di_flags
= dp
->di_flags
;
807 obi
.di_gen
= dp
->di_gen
;
808 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
810 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
811 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
812 #else /* __linux__ */
814 #endif /* __linux__ */
815 spcl
.c_type
= TS_INODE
;
817 switch (dp
->di_mode
& S_IFMT
) {
827 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
833 * Check for short symbolic link.
837 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
841 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
842 buf
[dp
->di_size
] = '\0';
846 #endif /* __linux__ */
848 if (dp
->di_size
> 0 &&
849 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
853 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
854 buf
[dp
->di_size
] = '\0';
877 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
880 if (i_size
> NDADDR
* sblock
->fs_bsize
)
882 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
884 cnt
= NDADDR
* sblock
->fs_frag
;
887 cnt
= howmany(i_size
, sblock
->fs_fsize
);
888 blksout(&dp
->di_db
[0], cnt
, ino
);
889 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
892 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
893 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
896 bc
.next_block
= NDADDR
;
898 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
899 /* deal with holes at the end of the inode */
900 if (i_size
> ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
) {
901 remaining
= i_size
- ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
;
902 for (i
= 0; i
< howmany(remaining
, sblock
->fs_fsize
); i
++) {
903 bc
.buf
[bc
.cnt
++] = 0;
904 if (bc
.cnt
== bc
.max
) {
905 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
911 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
915 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
916 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
925 struct convert_dir_context
{
933 * This function converts an ext2fs directory entry to the BSD format.
935 * Basically, it adds a null-character at the end of the name, recomputes the
936 * size of the entry, and creates it in a temporary buffer
939 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
941 struct convert_dir_context
*p
;
942 struct olddirect
*dp
;
945 p
= (struct convert_dir_context
*)private;
947 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
948 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
949 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
950 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
951 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
954 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
955 dp
->d_ino
= dirent
->inode
;
956 dp
->d_reclen
= reclen
;
957 dp
->d_namlen
= dirent
->name_len
& 0xFF;
958 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
959 dp
->d_name
[dp
->d_namlen
] = '\0';
960 p
->prev_offset
= p
->offset
;
969 * Dumps a directory to tape after converting it to the BSD format
972 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
976 struct old_bsd_inode obi
;
977 struct convert_dir_context cdc
;
979 struct ext2_dir_entry
*de
;
984 dumpmap(dumpinomap
, TS_BITS
, ino
);
986 CLRINO(ino
, dumpinomap
);
989 * Convert the directory to the BSD format
991 /* Allocate a buffer for the conversion (twice the size of the
992 ext2fs directory to avoid problems ;-) */
993 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
995 err(1, "Cannot allocate buffer to convert directory #%lu\n",
999 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
1000 /* Do the conversion */
1001 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
1003 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
1006 /* Fix the last entry */
1007 if ((cdc
.offset
% cdc
.bs
) != 0) {
1008 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
1009 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1010 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1013 dir_size
= cdc
.offset
;
1016 memset(&obi
, 0, sizeof(obi
));
1017 obi
.di_mode
= dp
->di_mode
;
1018 obi
.di_uid
= dp
->di_uid
;
1019 obi
.di_gid
= dp
->di_gid
;
1020 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
1021 obi
.di_atime
= dp
->di_atime
;
1022 obi
.di_mtime
= dp
->di_mtime
;
1023 obi
.di_ctime
= dp
->di_ctime
;
1024 obi
.di_nlink
= dp
->di_nlink
;
1025 obi
.di_blocks
= dp
->di_blocks
;
1026 obi
.di_flags
= dp
->di_flags
;
1027 obi
.di_gen
= dp
->di_gen
;
1028 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
1029 if (dp
->di_file_acl
)
1030 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
1031 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
1032 #else /* __linux__ */
1033 spcl
.c_dinode
= *dp
;
1034 #endif /* __linux__ */
1035 spcl
.c_type
= TS_INODE
;
1037 switch (dp
->di_mode
& S_IFMT
) {
1048 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1053 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1054 dp
->di_mode
& IFMT
, ino
);
1057 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1061 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1063 spcl
.c_type
= TS_ADDR
;
1066 (void)free(cdc
.buf
);
1068 #endif /* __linux__ */
1072 * Read indirect blocks, and pass the data blocks to be dumped.
1075 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1082 daddr_t idblk
[MAXNINDIR
];
1085 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1088 * My RedHat 4.0 system doesn't have these flags; I haven't
1089 * upgraded e2fsprogs yet
1091 #if defined(EXT2_FLAG_SWAP_BYTES)
1092 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1093 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1096 max
= sblock
->fs_bsize
>> 2;
1097 swapme
= (blk_t
*) idblk
;
1098 for (i
= 0; i
< max
; i
++, swapme
++)
1099 *swapme
= ext2fs_swab32(*swapme
);
1101 #endif /* __linux__ */
1103 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1104 if (ind_level
<= 0) {
1105 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1106 cnt
= howmany(*size
, sblock
->fs_fsize
);
1109 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1111 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1113 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1114 blksout(&idblk
[0], cnt
, ino
);
1118 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1119 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1127 * Collect up the data into tape record sized buffers and output them.
1130 blksout(daddr_t
*blkp
, int frags
, dump_ino_t ino
)
1133 int i
, j
, count
, blks
, tbperdb
;
1135 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1136 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1137 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1138 if (i
+ TP_NINDIR
> blks
)
1141 count
= i
+ TP_NINDIR
;
1142 for (j
= i
; j
< count
; j
++)
1143 if (blkp
[j
/ tbperdb
] != 0)
1144 spcl
.c_addr
[j
- i
] = 1;
1146 spcl
.c_addr
[j
- i
] = 0;
1147 spcl
.c_count
= count
- i
;
1149 bp
= &blkp
[i
/ tbperdb
];
1150 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1152 if (j
+ tbperdb
<= count
)
1153 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1155 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1158 spcl
.c_type
= TS_ADDR
;
1163 * Dump a map to the tape.
1166 dumpmap(char *map
, int type
, dump_ino_t ino
)
1172 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1174 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1178 #if defined __linux__ && !defined(int32_t)
1179 #define int32_t __s32
1183 * Compute and fill in checksum information.
1186 mkchecksum(union u_spcl
*tmpspcl
)
1188 int32_t sum
, cnt
, *lp
;
1190 tmpspcl
->s_spcl
.c_checksum
= 0;
1191 lp
= (int32_t *)&tmpspcl
->s_spcl
;
1193 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1194 while (--cnt
>= 0) {
1200 tmpspcl
->s_spcl
.c_checksum
= CHECKSUM
- sum
;
1204 * Write a header record to the dump tape.
1207 writeheader(dump_ino_t ino
)
1209 spcl
.c_inumber
= ino
;
1210 spcl
.c_magic
= NFS_MAGIC
;
1211 mkchecksum((union u_spcl
*)&spcl
);
1212 writerec((char *)&spcl
, 1);
1217 getino(dump_ino_t inum
)
1219 static struct dinode dinode
;
1223 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1225 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1230 #else /* __linux__ */
1232 getino(dump_ino_t inum
)
1234 static daddr_t minino
, maxino
;
1235 static struct dinode inoblock
[MAXINOPB
];
1238 if (inum
>= minino
&& inum
< maxino
)
1239 return (&inoblock
[inum
- minino
]);
1240 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1241 (int)sblock
->fs_bsize
);
1242 minino
= inum
- (inum
% INOPB(sblock
));
1243 maxino
= minino
+ INOPB(sblock
);
1244 return (&inoblock
[inum
- minino
]);
1246 #endif /* __linux__ */
1249 * Read a chunk of data from the disk.
1250 * Try to recover from hard errors by reading in sector sized pieces.
1251 * Error recovery is attempted at most breademax times before seeking
1252 * consent from the operator to continue.
1254 int breaderrors
= 0;
1257 bread(daddr_t blkno
, char *buf
, int size
)
1264 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1265 (((ext2_loff_t
)blkno
) << dev_bshift
))
1267 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1268 ((off_t
)blkno
<< dev_bshift
))
1270 msg("bread: lseek fails\n");
1271 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1273 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1275 * Trying to read the final fragment.
1277 * NB - dump only works in TP_BSIZE blocks, hence
1278 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1279 * It should be smarter about not actually trying to
1280 * read more than it can get, but for the time being
1281 * we punt and scale back the read only when it gets
1282 * us into trouble. (mkm 9/25/83)
1288 msg("read error from %s: %s: [block %d]: count=%d\n",
1289 disk
, strerror(errno
), blkno
, size
);
1291 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1292 disk
, blkno
, size
, cnt
);
1293 if (++breaderrors
> breademax
) {
1294 msg("More than %d block read errors from %d\n",
1296 broadcast("DUMP IS AILING!\n");
1297 msg("This is an unrecoverable error.\n");
1298 if (!query("Do you want to attempt to continue?")){
1305 * Zero buffer, then try to read each sector of buffer separately.
1307 memset(buf
, 0, size
);
1308 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1310 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1311 (((ext2_loff_t
)blkno
) << dev_bshift
))
1313 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1314 ((off_t
)blkno
<< dev_bshift
))
1316 msg("bread: lseek2 fails!\n");
1317 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1320 msg("read error from %s: %s: [sector %d]: count=%d\n",
1321 disk
, strerror(errno
), blkno
, dev_bsize
);
1324 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1325 disk
, blkno
, dev_bsize
, cnt
);