2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
10 * Copyright (c) 1980, 1988, 1991, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid
[] =
44 "$Id: traverse.c,v 1.31 2001/03/28 12:59:48 stelian Exp $";
55 #include <sys/param.h>
58 #include <linux/ext2_fs.h>
59 #include <ext2fs/ext2fs.h>
60 #include <bsdcompat.h>
61 #include <compaterr.h>
64 #include <sys/vnode.h>
67 #include <ufs/fsdir.h>
68 #include <ufs/inode.h>
70 #include <ufs/ufs/dir.h>
71 #include <ufs/ufs/dinode.h>
72 #include <ufs/ffs/fs.h>
73 #endif /* __linux__ */
75 #include <protocols/dumprestore.h>
79 #define HASDUMPEDFILE 0x1
80 #define HASSUBDIRS 0x2
83 typedef u_quad_t fsizeT
;
86 typedef quad_t fsizeT
;
93 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
94 int blocksize
, char *buf
, void *private));
96 static int dirindir
__P((dump_ino_t ino
, daddr_t blkno
, int level
, long *size
));
97 static void dmpindir
__P((dump_ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
98 static int searchdir
__P((dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
));
100 static void mapfileino
__P((dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
));
101 static int exclude_ino
__P((dump_ino_t ino
));
102 extern dump_ino_t iexclude_list
[IEXCLUDE_MAXNUM
]; /* the inode exclude list */
103 extern int iexclude_num
; /* number of elements in list */
105 #ifdef HAVE_EXT2_JOURNAL_INUM
106 #define ext2_journal_ino(sb) (sb->s_journal_inum)
108 #define ext2_journal_ino(sb) (*((__u32 *)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
135 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
139 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
141 struct ext2_super_block
*es
= (*fs
)->super
;
142 dump_ino_t journal_ino
= ext2_journal_ino(es
);
144 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
145 fprintf(stderr
, "This an journal, not a filesystem!\n");
146 retval
= EXT2_ET_UNSUPP_FEATURE
;
149 else if ((retval
= es
->s_feature_incompat
&
150 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
151 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
153 "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
&&
161 journal_ino
&& !exclude_ino(journal_ino
)) {
162 iexclude_list
[iexclude_num
++] = journal_ino
;
163 msg("Exclude ext3 journal inode %u\n",
166 if (!exclude_ino(EXT2_RESIZE_INO
))
167 iexclude_list
[iexclude_num
++] = EXT2_RESIZE_INO
;
174 * This is an estimation of the number of TP_BSIZE blocks in the file.
175 * It estimates the number of blocks in files with holes by assuming
176 * that all of the blocks accounted for by di_blocks are data blocks
177 * (when some of the blocks are usually used for indirect pointers);
178 * hence the estimate may be high.
181 blockest(struct dinode
const *dp
)
183 long blkest
, sizeest
;
187 * dp->di_size is the size of the file in bytes.
188 * dp->di_blocks stores the number of sectors actually in the file.
189 * If there are more sectors than the size would indicate, this just
190 * means that there are indirect blocks in the file or unused
191 * sectors in the last file block; we can safely ignore these
192 * (blkest = sizeest below).
193 * If the file is bigger than the number of sectors would indicate,
194 * then the file has holes in it. In this case we must use the
195 * block count to estimate the number of data blocks used, but
196 * we use the actual size for estimating the number of indirect
197 * dump blocks (sizeest vs. blkest in the indirect block
200 blkest
= howmany((u_quad_t
)dp
->di_blocks
*fs
->blocksize
, TP_BSIZE
);
201 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
202 sizeest
= howmany(i_size
, TP_BSIZE
);
203 if (blkest
> sizeest
)
206 if (i_size
> fs
->blocksize
* NDADDR
) {
207 /* calculate the number of indirect blocks on the dump tape */
209 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
210 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
213 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
214 /* calculate the number of indirect blocks on the dump tape */
216 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
224 * This tests whether an inode is in the exclude list
227 exclude_ino(dump_ino_t ino
)
230 if (iexclude_num
) { /* if there are inodes in the exclude list */
231 int idx
; /* then check this inode against it */
232 for (idx
= 0; idx
< iexclude_num
; idx
++)
233 if (ino
== iexclude_list
[idx
])
239 /* Auxiliary macro to pick up files changed since previous dump. */
240 #define CHANGEDSINCE(dp, t) \
241 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
243 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
245 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
247 #define NODUMP_FLAG(dp) 0
250 /* The WANTTODUMP macro decides whether a file should be dumped. */
251 #define WANTTODUMP(dp, ino) \
252 (CHANGEDSINCE(dp, spcl.c_ddate) && \
253 (!NODUMP_FLAG(dp)) && \
257 * Determine if given inode should be dumped. "dp" must either point to a
258 * copy of the given inode, or be NULL (in which case it is fetched.)
261 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
266 * Skip inode if we've already marked it for dumping
268 if (TSTINO(ino
, usedinomap
))
272 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
275 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
279 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
280 * used map. All inode but dirs who have the nodump attribute go
283 SETINO(ino
, usedinomap
);
286 SETINO(ino
, dumpdirmap
);
287 if (WANTTODUMP(dp
, ino
)) {
288 SETINO(ino
, dumpinomap
);
289 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
292 *tapesize
+= blockest(dp
);
296 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
297 CLRINO(ino
, usedinomap
);
305 * Walk the inode list for a filesystem to find all allocated inodes
306 * that have been modified since the previous dump time. Also, find all
307 * the directories in the filesystem.
311 mapfiles(dump_ino_t maxino
, long *tapesize
)
314 int anydirskipped
= 0;
315 ext2_inode_scan scan
;
317 struct ext2_inode inode
;
320 * We use libext2fs's inode scanning routines, which are particularly
321 * robust. (Note that getino cannot return an error.)
323 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
325 com_err(disk
, err
, "while opening inodes\n");
329 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
330 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
333 com_err(disk
, err
, "while scanning inode #%ld\n",
341 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
344 ext2fs_close_inode_scan(scan
);
347 * Restore gets very upset if the root is not dumped,
348 * so ensure that it always is dumped.
350 SETINO(ROOTINO
, dumpinomap
);
351 return (anydirskipped
);
355 mapfiles(dump_ino_t maxino
, long *tapesize
)
357 register dump_ino_t ino
;
358 int anydirskipped
= 0;
360 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
361 mapfileino(ino
, tapesize
, &anydirskipped
);
364 * Restore gets very upset if the root is not dumped,
365 * so ensure that it always is dumped.
367 SETINO(ROOTINO
, dumpinomap
);
368 return (anydirskipped
);
370 #endif /* __linux__ */
373 struct mapfile_context
{
379 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
381 register struct dinode
const *dp
;
384 struct mapfile_context
*mfc
;
388 mfc
= (struct mapfile_context
*)private;
389 dp
= getino(dirent
->inode
);
391 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
393 mode
= dp
->di_mode
& IFMT
;
394 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
395 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
396 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
397 ( dirent
->name_len
& 0xFF ) != 2)) {
398 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
399 mapfilesindir
, private);
410 * Walk the inode list for a filesystem to find all allocated inodes
411 * that have been modified since the previous dump time. Also, find all
412 * the directories in the filesystem.
415 mapfilesfromdir(dump_ino_t maxino
, long *tapesize
, char *directory
)
418 struct mapfile_context mfc
;
420 char dir_name
[MAXPATHLEN
];
421 int i
, anydirskipped
= 0;
424 * Mark every directory in the path as being dumped
426 for (i
= 0; i
< strlen (directory
); i
++) {
427 if (directory
[i
] == '/') {
428 strncpy (dir_name
, directory
, i
);
430 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
433 com_err(disk
, retval
, "while translating %s",
437 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
441 * Mark the final directory
443 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
445 com_err(disk
, retval
, "while translating %s", directory
);
448 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
450 mfc
.tapesize
= tapesize
;
451 mfc
.anydirskipped
= &anydirskipped
;
452 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
456 com_err(disk
, retval
, "while mapping files in %s", directory
);
460 * Ensure that the root inode actually appears in the file list
463 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
465 * Restore gets very upset if the root is not dumped,
466 * so ensure that it always is dumped.
468 SETINO(ROOTINO
, dumpinomap
);
469 return anydirskipped
;
474 struct mapdirs_context
{
484 * Scan each directory on the filesystem to see if it has any modified
485 * files in it. If it does, and has not already been added to the dump
486 * list (because it was itself modified), then add it. If a directory
487 * has not been modified itself, contains no modified files and has no
488 * subdirectories, then it can be deleted from the dump list and from
489 * the list of directories. By deleting it from the list of directories,
490 * its parent may now qualify for the same treatment on this or a later
491 * pass using this algorithm.
494 mapdirs(dump_ino_t maxino
, long *tapesize
)
496 register struct dinode
*dp
;
499 register dump_ino_t ino
;
504 struct mapdirs_context mdc
;
506 int ret
, change
= 0, nodump
;
508 isdir
= 0; /* XXX just to get gcc to shut up */
509 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
510 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
515 * If dir has been removed from the used map, it's either
516 * because it had the nodump flag, or it herited it from
517 * its parent. A directory can't be in dumpinomap if not
518 * in usedinomap, but we have to go through it anyway
519 * to propagate the nodump attribute.
521 nodump
= (TSTINO(ino
, usedinomap
) == 0);
522 if ((isdir
& 1) == 0 ||
523 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
530 mdc
.tapesize
= tapesize
;
531 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
532 #else /* __linux__ */
533 filesize
= dp
->di_size
;
534 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
535 if (dp
->di_db
[i
] != 0)
536 ret
|= searchdir(ino
, dp
->di_db
[i
],
537 (long)dblksize(sblock
, dp
, i
),
539 if (ret
& HASDUMPEDFILE
)
542 filesize
-= sblock
->fs_bsize
;
544 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
545 if (dp
->di_ib
[i
] == 0)
547 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
549 #endif /* __linux__ */
550 if (ret
& HASDUMPEDFILE
) {
551 SETINO(ino
, dumpinomap
);
552 *tapesize
+= blockest(dp
);
557 if (ret
& HASSUBDIRS
)
558 change
= 1; /* subdirs have inherited nodump */
559 CLRINO(ino
, dumpdirmap
);
560 } else if ((ret
& HASSUBDIRS
) == 0) {
561 if (!TSTINO(ino
, dumpinomap
)) {
562 CLRINO(ino
, dumpdirmap
);
572 * Read indirect blocks, and pass the data blocks to be searched
573 * as directories. Quit as soon as any entry is found that will
574 * require the directory to be dumped.
577 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
581 daddr_t idblk
[MAXNINDIR
];
583 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
584 if (ind_level
<= 0) {
585 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
588 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
590 if (ret
& HASDUMPEDFILE
)
593 *filesize
-= sblock
->fs_bsize
;
598 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
601 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
605 #endif /* !__linux__ */
608 * Scan a disk block containing directory information looking to see if
609 * any of the entries are on the dump list and to see if the directory
610 * contains any subdirectories.
614 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
616 struct mapdirs_context
*mdc
;
621 mdc
= (struct mapdirs_context
*)private;
623 tapesize
= mdc
->tapesize
;
627 if (dp
->name
[0] == '.') {
628 if (( dp
->name_len
& 0xFF ) == 1)
630 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
634 ip
= getino(dp
->inode
);
635 if (TSTINO(dp
->inode
, dumpinomap
)) {
636 CLRINO(dp
->inode
, dumpinomap
);
637 CLRINO(dp
->inode
, usedinomap
);
638 *tapesize
-= blockest(ip
);
640 /* Add dir back to the dir map, to propagate nodump */
641 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
642 SETINO(dp
->inode
, dumpdirmap
);
646 if (TSTINO(dp
->inode
, dumpinomap
)) {
647 *ret
|= HASDUMPEDFILE
;
648 if (*ret
& HASSUBDIRS
)
651 if (TSTINO(dp
->inode
, dumpdirmap
)) {
653 if (*ret
& HASDUMPEDFILE
)
660 #else /* __linux__ */
663 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
665 register struct direct
*dp
;
666 register long loc
, ret
= 0;
669 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
672 for (loc
= 0; loc
< size
; ) {
673 dp
= (struct direct
*)(dblk
+ loc
);
674 if (dp
->d_reclen
== 0) {
675 msg("corrupted directory, inumber %d\n", ino
);
681 if (dp
->d_name
[0] == '.') {
682 if (dp
->d_name
[1] == '\0')
684 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
687 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
688 ret
|= HASDUMPEDFILE
;
689 if (ret
& HASSUBDIRS
)
692 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
694 if (ret
& HASDUMPEDFILE
)
700 #endif /* __linux__ */
704 struct block_context
{
713 * Dump a block to the tape
716 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
717 blk_t ref_block
, int ref_offset
, void * private)
719 struct block_context
*p
;
722 if (blockcnt
< NDADDR
)
724 p
= (struct block_context
*)private;
725 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
726 p
->buf
[p
->cnt
++] = 0;
727 if (p
->cnt
== p
->max
) {
728 blksout (p
->buf
, p
->cnt
, p
->ino
);
732 p
->buf
[p
->cnt
++] = *blocknr
;
733 if (p
->cnt
== p
->max
) {
734 blksout (p
->buf
, p
->cnt
, p
->ino
);
737 p
->next_block
= blockcnt
+ 1;
743 * Dump passes 3 and 4.
745 * Dump the contents of an inode to tape.
748 dumpino(struct dinode
*dp
, dump_ino_t ino
)
753 struct old_bsd_inode obi
;
755 struct block_context bc
;
759 u_quad_t i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
763 dumpmap(dumpinomap
, TS_BITS
, ino
);
765 CLRINO(ino
, dumpinomap
);
767 memset(&obi
, 0, sizeof(obi
));
768 obi
.di_mode
= dp
->di_mode
;
769 obi
.di_uid
= dp
->di_uid
;
770 obi
.di_gid
= dp
->di_gid
;
771 obi
.di_qsize
.v
= i_size
;
772 obi
.di_atime
= dp
->di_atime
;
773 obi
.di_mtime
= dp
->di_mtime
;
774 obi
.di_ctime
= dp
->di_ctime
;
775 obi
.di_nlink
= dp
->di_nlink
;
776 obi
.di_blocks
= dp
->di_blocks
;
777 obi
.di_flags
= dp
->di_flags
;
778 obi
.di_gen
= dp
->di_gen
;
779 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
781 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
782 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
783 #else /* __linux__ */
785 #endif /* __linux__ */
786 spcl
.c_type
= TS_INODE
;
788 switch (dp
->di_mode
& S_IFMT
) {
798 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
804 * Check for short symbolic link.
808 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
812 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
813 buf
[dp
->di_size
] = '\0';
817 #endif /* __linux__ */
819 if (dp
->di_size
> 0 &&
820 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
824 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
825 buf
[dp
->di_size
] = '\0';
848 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
851 if (i_size
> NDADDR
* sblock
->fs_bsize
)
853 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
855 cnt
= NDADDR
* sblock
->fs_frag
;
858 cnt
= howmany(i_size
, sblock
->fs_fsize
);
859 blksout(&dp
->di_db
[0], cnt
, ino
);
860 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
863 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
864 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
867 bc
.next_block
= NDADDR
;
869 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
871 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
875 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
876 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
885 struct convert_dir_context
{
893 * This function converts an ext2fs directory entry to the BSD format.
895 * Basically, it adds a null-character at the end of the name, recomputes the
896 * size of the entry, and creates it in a temporary buffer
899 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
901 struct convert_dir_context
*p
;
902 struct olddirect
*dp
;
905 p
= (struct convert_dir_context
*)private;
907 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
908 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
909 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
910 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
911 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
914 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
915 dp
->d_ino
= dirent
->inode
;
916 dp
->d_reclen
= reclen
;
917 dp
->d_namlen
= dirent
->name_len
& 0xFF;
918 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
919 dp
->d_name
[dp
->d_namlen
] = '\0';
920 p
->prev_offset
= p
->offset
;
929 * Dumps a directory to tape after converting it to the BSD format
932 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
936 struct old_bsd_inode obi
;
937 struct convert_dir_context cdc
;
939 struct ext2_dir_entry
*de
;
944 dumpmap(dumpinomap
, TS_BITS
, ino
);
946 CLRINO(ino
, dumpinomap
);
949 * Convert the directory to the BSD format
951 /* Allocate a buffer for the conversion (twice the size of the
952 ext2fs directory to avoid problems ;-) */
953 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
955 err(1, "Cannot allocate buffer to convert directory #%lu\n",
959 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
960 /* Do the conversion */
961 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
963 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
966 /* Fix the last entry */
967 if ((cdc
.offset
% cdc
.bs
) != 0) {
968 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
969 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
970 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
973 dir_size
= cdc
.offset
;
976 memset(&obi
, 0, sizeof(obi
));
977 obi
.di_mode
= dp
->di_mode
;
978 obi
.di_uid
= dp
->di_uid
;
979 obi
.di_gid
= dp
->di_gid
;
980 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
981 obi
.di_atime
= dp
->di_atime
;
982 obi
.di_mtime
= dp
->di_mtime
;
983 obi
.di_ctime
= dp
->di_ctime
;
984 obi
.di_nlink
= dp
->di_nlink
;
985 obi
.di_blocks
= dp
->di_blocks
;
986 obi
.di_flags
= dp
->di_flags
;
987 obi
.di_gen
= dp
->di_gen
;
988 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
990 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
991 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
992 #else /* __linux__ */
994 #endif /* __linux__ */
995 spcl
.c_type
= TS_INODE
;
997 switch (dp
->di_mode
& S_IFMT
) {
1008 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1013 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1014 dp
->di_mode
& IFMT
, ino
);
1017 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1021 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1023 spcl
.c_type
= TS_ADDR
;
1026 (void)free(cdc
.buf
);
1028 #endif /* __linux__ */
1032 * Read indirect blocks, and pass the data blocks to be dumped.
1035 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1042 daddr_t idblk
[MAXNINDIR
];
1045 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1048 * My RedHat 4.0 system doesn't have these flags; I haven't
1049 * upgraded e2fsprogs yet
1051 #if defined(EXT2_FLAG_SWAP_BYTES)
1052 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1053 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1056 max
= sblock
->fs_bsize
>> 2;
1057 swapme
= (blk_t
*) idblk
;
1058 for (i
= 0; i
< max
; i
++, swapme
++)
1059 *swapme
= ext2fs_swab32(*swapme
);
1061 #endif /* __linux__ */
1063 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1064 if (ind_level
<= 0) {
1065 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1066 cnt
= howmany(*size
, sblock
->fs_fsize
);
1069 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1071 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1073 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1074 blksout(&idblk
[0], cnt
, ino
);
1078 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1079 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1087 * Collect up the data into tape record sized buffers and output them.
1090 blksout(daddr_t
*blkp
, int frags
, dump_ino_t ino
)
1092 register daddr_t
*bp
;
1093 int i
, j
, count
, blks
, tbperdb
;
1095 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1096 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1097 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1098 if (i
+ TP_NINDIR
> blks
)
1101 count
= i
+ TP_NINDIR
;
1102 for (j
= i
; j
< count
; j
++)
1103 if (blkp
[j
/ tbperdb
] != 0)
1104 spcl
.c_addr
[j
- i
] = 1;
1106 spcl
.c_addr
[j
- i
] = 0;
1107 spcl
.c_count
= count
- i
;
1109 bp
= &blkp
[i
/ tbperdb
];
1110 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1112 if (j
+ tbperdb
<= count
)
1113 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1115 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1118 spcl
.c_type
= TS_ADDR
;
1123 * Dump a map to the tape.
1126 dumpmap(char *map
, int type
, dump_ino_t ino
)
1132 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1134 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1139 * Write a header record to the dump tape.
1141 #if defined __linux__ && !defined(int32_t)
1142 #define int32_t __s32
1145 writeheader(dump_ino_t ino
)
1147 register int32_t sum
, cnt
, *lp
;
1149 spcl
.c_inumber
= ino
;
1150 spcl
.c_magic
= NFS_MAGIC
;
1151 spcl
.c_checksum
= 0;
1152 lp
= (int32_t *)&spcl
;
1154 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1155 while (--cnt
>= 0) {
1161 spcl
.c_checksum
= CHECKSUM
- sum
;
1162 writerec((char *)&spcl
, 1);
1167 getino(dump_ino_t inum
)
1169 static struct dinode dinode
;
1173 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1175 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1180 #else /* __linux__ */
1182 getino(dump_ino_t inum
)
1184 static daddr_t minino
, maxino
;
1185 static struct dinode inoblock
[MAXINOPB
];
1188 if (inum
>= minino
&& inum
< maxino
)
1189 return (&inoblock
[inum
- minino
]);
1190 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1191 (int)sblock
->fs_bsize
);
1192 minino
= inum
- (inum
% INOPB(sblock
));
1193 maxino
= minino
+ INOPB(sblock
);
1194 return (&inoblock
[inum
- minino
]);
1196 #endif /* __linux__ */
1199 * Read a chunk of data from the disk.
1200 * Try to recover from hard errors by reading in sector sized pieces.
1201 * Error recovery is attempted at most BREADEMAX times before seeking
1202 * consent from the operator to continue.
1204 int breaderrors
= 0;
1205 #define BREADEMAX 32
1208 bread(daddr_t blkno
, char *buf
, int size
)
1215 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1216 (((ext2_loff_t
)blkno
) << dev_bshift
))
1218 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1219 ((off_t
)blkno
<< dev_bshift
))
1221 msg("bread: lseek fails\n");
1222 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1224 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1226 * Trying to read the final fragment.
1228 * NB - dump only works in TP_BSIZE blocks, hence
1229 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1230 * It should be smarter about not actually trying to
1231 * read more than it can get, but for the time being
1232 * we punt and scale back the read only when it gets
1233 * us into trouble. (mkm 9/25/83)
1239 msg("read error from %s: %s: [block %d]: count=%d\n",
1240 disk
, strerror(errno
), blkno
, size
);
1242 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1243 disk
, blkno
, size
, cnt
);
1244 if (++breaderrors
> BREADEMAX
) {
1245 msg("More than %d block read errors from %d\n",
1247 broadcast("DUMP IS AILING!\n");
1248 msg("This is an unrecoverable error.\n");
1249 if (!query("Do you want to attempt to continue?")){
1256 * Zero buffer, then try to read each sector of buffer separately.
1258 memset(buf
, 0, size
);
1259 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1261 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1262 (((ext2_loff_t
)blkno
) << dev_bshift
))
1264 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1265 ((off_t
)blkno
<< dev_bshift
))
1267 msg("bread: lseek2 fails!\n");
1268 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1271 msg("read error from %s: %s: [sector %d]: count=%d\n",
1272 disk
, strerror(errno
), blkno
, dev_bsize
);
1275 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1276 disk
, blkno
, dev_bsize
, cnt
);