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 1.28 2001/03/20 10:02:48 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 /* Temporary fix waiting for Andreas fixes... */
106 #ifdef HAS_EXT2FS_EXT2_FS
107 #define ext2_journal_ino(sb) (sb->s_journal_inum)
109 #define ext2_ino_t __u32
110 #define ext2_journal_ino(sb) (*((__u32 *)sb + 0x38))
113 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
114 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
116 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
117 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
119 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
120 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
122 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
123 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
126 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
127 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
128 EXT2_FEATURE_INCOMPAT_FILETYPE)
131 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
135 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
137 struct ext2_super_block
*es
= (*fs
)->super
;
138 ext2_ino_t journal_ino
= ext2_journal_ino(es
);
140 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
141 fprintf(stderr
, "This an journal, not a filesystem!\n");
142 retval
= EXT2_ET_UNSUPP_FEATURE
;
145 else if ((retval
= es
->s_feature_incompat
&
146 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
147 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
149 "Unsupported feature(s) 0x%x in filesystem\n",
151 retval
= EXT2_ET_UNSUPP_FEATURE
;
154 else if (es
->s_feature_compat
&
155 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
157 !exclude_ino((dump_ino_t
)journal_ino
)) {
158 iexclude_list
[iexclude_num
++] = (dump_ino_t
)journal_ino
;
159 msg("Added ext3 journal inode %d to exclude list\n",
167 * This is an estimation of the number of TP_BSIZE blocks in the file.
168 * It estimates the number of blocks in files with holes by assuming
169 * that all of the blocks accounted for by di_blocks are data blocks
170 * (when some of the blocks are usually used for indirect pointers);
171 * hence the estimate may be high.
174 blockest(struct dinode
const *dp
)
176 long blkest
, sizeest
;
180 * dp->di_size is the size of the file in bytes.
181 * dp->di_blocks stores the number of sectors actually in the file.
182 * If there are more sectors than the size would indicate, this just
183 * means that there are indirect blocks in the file or unused
184 * sectors in the last file block; we can safely ignore these
185 * (blkest = sizeest below).
186 * If the file is bigger than the number of sectors would indicate,
187 * then the file has holes in it. In this case we must use the
188 * block count to estimate the number of data blocks used, but
189 * we use the actual size for estimating the number of indirect
190 * dump blocks (sizeest vs. blkest in the indirect block
193 blkest
= howmany((u_quad_t
)dp
->di_blocks
*fs
->blocksize
, TP_BSIZE
);
194 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
195 sizeest
= howmany(i_size
, TP_BSIZE
);
196 if (blkest
> sizeest
)
199 if (i_size
> fs
->blocksize
* NDADDR
) {
200 /* calculate the number of indirect blocks on the dump tape */
202 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
203 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
206 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
207 /* calculate the number of indirect blocks on the dump tape */
209 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
217 * This tests whether an inode is in the exclude list
220 exclude_ino(dump_ino_t ino
)
223 if (iexclude_num
) { /* if there are inodes in the exclude list */
224 int idx
; /* then check this inode against it */
225 for (idx
= 0; idx
< iexclude_num
; idx
++)
226 if (ino
== iexclude_list
[idx
])
232 /* Auxiliary macro to pick up files changed since previous dump. */
233 #define CHANGEDSINCE(dp, t) \
234 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
236 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
238 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
240 #define NODUMP_FLAG(dp) 0
243 /* The WANTTODUMP macro decides whether a file should be dumped. */
244 #define WANTTODUMP(dp, ino) \
245 (CHANGEDSINCE(dp, spcl.c_ddate) && \
246 (!NODUMP_FLAG(dp)) && \
250 * Determine if given inode should be dumped. "dp" must either point to a
251 * copy of the given inode, or be NULL (in which case it is fetched.)
254 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
259 * Skip inode if we've already marked it for dumping
261 if (TSTINO(ino
, usedinomap
))
265 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
268 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
272 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
273 * used map. All inode but dirs who have the nodump attribute go
276 SETINO(ino
, usedinomap
);
279 SETINO(ino
, dumpdirmap
);
280 if (WANTTODUMP(dp
, ino
)) {
281 SETINO(ino
, dumpinomap
);
282 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
285 *tapesize
+= blockest(dp
);
289 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
290 CLRINO(ino
, usedinomap
);
298 * Walk the inode list for a filesystem to find all allocated inodes
299 * that have been modified since the previous dump time. Also, find all
300 * the directories in the filesystem.
304 mapfiles(dump_ino_t maxino
, long *tapesize
)
307 int anydirskipped
= 0;
308 ext2_inode_scan scan
;
310 struct ext2_inode inode
;
313 * We use libext2fs's inode scanning routines, which are particularly
314 * robust. (Note that getino cannot return an error.)
316 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
318 com_err(disk
, err
, "while opening inodes\n");
322 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
323 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
326 com_err(disk
, err
, "while scanning inode #%ld\n",
334 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
337 ext2fs_close_inode_scan(scan
);
340 * Restore gets very upset if the root is not dumped,
341 * so ensure that it always is dumped.
343 SETINO(ROOTINO
, dumpinomap
);
344 return (anydirskipped
);
348 mapfiles(dump_ino_t maxino
, long *tapesize
)
350 register dump_ino_t ino
;
351 int anydirskipped
= 0;
353 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
354 mapfileino(ino
, tapesize
, &anydirskipped
);
357 * Restore gets very upset if the root is not dumped,
358 * so ensure that it always is dumped.
360 SETINO(ROOTINO
, dumpinomap
);
361 return (anydirskipped
);
363 #endif /* __linux__ */
366 struct mapfile_context
{
372 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
374 register struct dinode
const *dp
;
377 struct mapfile_context
*mfc
;
381 mfc
= (struct mapfile_context
*)private;
382 dp
= getino(dirent
->inode
);
384 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
386 mode
= dp
->di_mode
& IFMT
;
387 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
388 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
389 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
390 ( dirent
->name_len
& 0xFF ) != 2)) {
391 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
392 mapfilesindir
, private);
403 * Walk the inode list for a filesystem to find all allocated inodes
404 * that have been modified since the previous dump time. Also, find all
405 * the directories in the filesystem.
408 mapfilesfromdir(dump_ino_t maxino
, long *tapesize
, char *directory
)
411 struct mapfile_context mfc
;
413 char dir_name
[MAXPATHLEN
];
414 int i
, anydirskipped
= 0;
417 * Mark every directory in the path as being dumped
419 for (i
= 0; i
< strlen (directory
); i
++) {
420 if (directory
[i
] == '/') {
421 strncpy (dir_name
, directory
, i
);
423 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
426 com_err(disk
, retval
, "while translating %s",
430 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
434 * Mark the final directory
436 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
438 com_err(disk
, retval
, "while translating %s", directory
);
441 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
443 mfc
.tapesize
= tapesize
;
444 mfc
.anydirskipped
= &anydirskipped
;
445 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
449 com_err(disk
, retval
, "while mapping files in %s", directory
);
453 * Ensure that the root inode actually appears in the file list
456 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
458 * Restore gets very upset if the root is not dumped,
459 * so ensure that it always is dumped.
461 SETINO(ROOTINO
, dumpinomap
);
462 return anydirskipped
;
467 struct mapdirs_context
{
477 * Scan each directory on the filesystem to see if it has any modified
478 * files in it. If it does, and has not already been added to the dump
479 * list (because it was itself modified), then add it. If a directory
480 * has not been modified itself, contains no modified files and has no
481 * subdirectories, then it can be deleted from the dump list and from
482 * the list of directories. By deleting it from the list of directories,
483 * its parent may now qualify for the same treatment on this or a later
484 * pass using this algorithm.
487 mapdirs(dump_ino_t maxino
, long *tapesize
)
489 register struct dinode
*dp
;
492 register dump_ino_t ino
;
497 struct mapdirs_context mdc
;
499 int ret
, change
= 0, nodump
;
501 isdir
= 0; /* XXX just to get gcc to shut up */
502 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
503 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
508 * If dir has been removed from the used map, it's either
509 * because it had the nodump flag, or it herited it from
510 * its parent. A directory can't be in dumpinomap if not
511 * in usedinomap, but we have to go through it anyway
512 * to propagate the nodump attribute.
514 nodump
= (TSTINO(ino
, usedinomap
) == 0);
515 if ((isdir
& 1) == 0 ||
516 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
523 mdc
.tapesize
= tapesize
;
524 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
525 #else /* __linux__ */
526 filesize
= dp
->di_size
;
527 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
528 if (dp
->di_db
[i
] != 0)
529 ret
|= searchdir(ino
, dp
->di_db
[i
],
530 (long)dblksize(sblock
, dp
, i
),
532 if (ret
& HASDUMPEDFILE
)
535 filesize
-= sblock
->fs_bsize
;
537 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
538 if (dp
->di_ib
[i
] == 0)
540 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
542 #endif /* __linux__ */
543 if (ret
& HASDUMPEDFILE
) {
544 SETINO(ino
, dumpinomap
);
545 *tapesize
+= blockest(dp
);
550 if (ret
& HASSUBDIRS
)
551 change
= 1; /* subdirs have inherited nodump */
552 CLRINO(ino
, dumpdirmap
);
553 } else if ((ret
& HASSUBDIRS
) == 0) {
554 if (!TSTINO(ino
, dumpinomap
)) {
555 CLRINO(ino
, dumpdirmap
);
565 * Read indirect blocks, and pass the data blocks to be searched
566 * as directories. Quit as soon as any entry is found that will
567 * require the directory to be dumped.
570 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
574 daddr_t idblk
[MAXNINDIR
];
576 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
577 if (ind_level
<= 0) {
578 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
581 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
583 if (ret
& HASDUMPEDFILE
)
586 *filesize
-= sblock
->fs_bsize
;
591 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
594 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
598 #endif /* !__linux__ */
601 * Scan a disk block containing directory information looking to see if
602 * any of the entries are on the dump list and to see if the directory
603 * contains any subdirectories.
607 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
609 struct mapdirs_context
*mdc
;
614 mdc
= (struct mapdirs_context
*)private;
616 tapesize
= mdc
->tapesize
;
620 if (dp
->name
[0] == '.') {
621 if (( dp
->name_len
& 0xFF ) == 1)
623 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
627 ip
= getino(dp
->inode
);
628 if (TSTINO(dp
->inode
, dumpinomap
)) {
629 CLRINO(dp
->inode
, dumpinomap
);
630 CLRINO(dp
->inode
, usedinomap
);
631 *tapesize
-= blockest(ip
);
633 /* Add dir back to the dir map, to propagate nodump */
634 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
635 SETINO(dp
->inode
, dumpdirmap
);
639 if (TSTINO(dp
->inode
, dumpinomap
)) {
640 *ret
|= HASDUMPEDFILE
;
641 if (*ret
& HASSUBDIRS
)
644 if (TSTINO(dp
->inode
, dumpdirmap
)) {
646 if (*ret
& HASDUMPEDFILE
)
653 #else /* __linux__ */
656 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
658 register struct direct
*dp
;
659 register long loc
, ret
= 0;
662 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
665 for (loc
= 0; loc
< size
; ) {
666 dp
= (struct direct
*)(dblk
+ loc
);
667 if (dp
->d_reclen
== 0) {
668 msg("corrupted directory, inumber %d\n", ino
);
674 if (dp
->d_name
[0] == '.') {
675 if (dp
->d_name
[1] == '\0')
677 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
680 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
681 ret
|= HASDUMPEDFILE
;
682 if (ret
& HASSUBDIRS
)
685 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
687 if (ret
& HASDUMPEDFILE
)
693 #endif /* __linux__ */
697 struct block_context
{
706 * Dump a block to the tape
709 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
710 blk_t ref_block
, int ref_offset
, void * private)
712 struct block_context
*p
;
715 if (blockcnt
< NDADDR
)
717 p
= (struct block_context
*)private;
718 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
719 p
->buf
[p
->cnt
++] = 0;
720 if (p
->cnt
== p
->max
) {
721 blksout (p
->buf
, p
->cnt
, p
->ino
);
725 p
->buf
[p
->cnt
++] = *blocknr
;
726 if (p
->cnt
== p
->max
) {
727 blksout (p
->buf
, p
->cnt
, p
->ino
);
730 p
->next_block
= blockcnt
+ 1;
736 * Dump passes 3 and 4.
738 * Dump the contents of an inode to tape.
741 dumpino(struct dinode
*dp
, dump_ino_t ino
)
746 struct old_bsd_inode obi
;
748 struct block_context bc
;
752 u_quad_t i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
756 dumpmap(dumpinomap
, TS_BITS
, ino
);
758 CLRINO(ino
, dumpinomap
);
760 memset(&obi
, 0, sizeof(obi
));
761 obi
.di_mode
= dp
->di_mode
;
762 obi
.di_uid
= dp
->di_uid
;
763 obi
.di_gid
= dp
->di_gid
;
764 obi
.di_qsize
.v
= i_size
;
765 obi
.di_atime
= dp
->di_atime
;
766 obi
.di_mtime
= dp
->di_mtime
;
767 obi
.di_ctime
= dp
->di_ctime
;
768 obi
.di_nlink
= dp
->di_nlink
;
769 obi
.di_blocks
= dp
->di_blocks
;
770 obi
.di_flags
= dp
->di_flags
;
771 obi
.di_gen
= dp
->di_gen
;
772 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
774 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
775 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
776 #else /* __linux__ */
778 #endif /* __linux__ */
779 spcl
.c_type
= TS_INODE
;
781 switch (dp
->di_mode
& S_IFMT
) {
791 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
797 * Check for short symbolic link.
801 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
805 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
806 buf
[dp
->di_size
] = '\0';
810 #endif /* __linux__ */
812 if (dp
->di_size
> 0 &&
813 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
817 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
818 buf
[dp
->di_size
] = '\0';
841 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
844 if (i_size
> NDADDR
* sblock
->fs_bsize
)
846 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
848 cnt
= NDADDR
* sblock
->fs_frag
;
851 cnt
= howmany(i_size
, sblock
->fs_fsize
);
852 blksout(&dp
->di_db
[0], cnt
, ino
);
853 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
856 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
857 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
860 bc
.next_block
= NDADDR
;
862 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
864 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
868 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
869 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
878 struct convert_dir_context
{
886 * This function converts an ext2fs directory entry to the BSD format.
888 * Basically, it adds a null-character at the end of the name, recomputes the
889 * size of the entry, and creates it in a temporary buffer
892 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
894 struct convert_dir_context
*p
;
895 struct olddirect
*dp
;
898 p
= (struct convert_dir_context
*)private;
900 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
901 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
902 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
903 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
904 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
907 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
908 dp
->d_ino
= dirent
->inode
;
909 dp
->d_reclen
= reclen
;
910 dp
->d_namlen
= dirent
->name_len
& 0xFF;
911 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
912 dp
->d_name
[dp
->d_namlen
] = '\0';
913 p
->prev_offset
= p
->offset
;
922 * Dumps a directory to tape after converting it to the BSD format
925 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
929 struct old_bsd_inode obi
;
930 struct convert_dir_context cdc
;
932 struct ext2_dir_entry
*de
;
937 dumpmap(dumpinomap
, TS_BITS
, ino
);
939 CLRINO(ino
, dumpinomap
);
942 * Convert the directory to the BSD format
944 /* Allocate a buffer for the conversion (twice the size of the
945 ext2fs directory to avoid problems ;-) */
946 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
948 err(1, "Cannot allocate buffer to convert directory #%lu\n",
952 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
953 /* Do the conversion */
954 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
956 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
959 /* Fix the last entry */
960 if ((cdc
.offset
% cdc
.bs
) != 0) {
961 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
962 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
963 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
966 dir_size
= cdc
.offset
;
969 memset(&obi
, 0, sizeof(obi
));
970 obi
.di_mode
= dp
->di_mode
;
971 obi
.di_uid
= dp
->di_uid
;
972 obi
.di_gid
= dp
->di_gid
;
973 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
974 obi
.di_atime
= dp
->di_atime
;
975 obi
.di_mtime
= dp
->di_mtime
;
976 obi
.di_ctime
= dp
->di_ctime
;
977 obi
.di_nlink
= dp
->di_nlink
;
978 obi
.di_blocks
= dp
->di_blocks
;
979 obi
.di_flags
= dp
->di_flags
;
980 obi
.di_gen
= dp
->di_gen
;
981 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
983 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
984 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
985 #else /* __linux__ */
987 #endif /* __linux__ */
988 spcl
.c_type
= TS_INODE
;
990 switch (dp
->di_mode
& S_IFMT
) {
1001 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1006 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1007 dp
->di_mode
& IFMT
, ino
);
1010 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1014 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1016 spcl
.c_type
= TS_ADDR
;
1019 (void)free(cdc
.buf
);
1021 #endif /* __linux__ */
1025 * Read indirect blocks, and pass the data blocks to be dumped.
1028 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1035 daddr_t idblk
[MAXNINDIR
];
1038 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1041 * My RedHat 4.0 system doesn't have these flags; I haven't
1042 * upgraded e2fsprogs yet
1044 #if defined(EXT2_FLAG_SWAP_BYTES)
1045 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1046 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1049 max
= sblock
->fs_bsize
>> 2;
1050 swapme
= (blk_t
*) idblk
;
1051 for (i
= 0; i
< max
; i
++, swapme
++)
1052 *swapme
= ext2fs_swab32(*swapme
);
1054 #endif /* __linux__ */
1056 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1057 if (ind_level
<= 0) {
1058 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1059 cnt
= howmany(*size
, sblock
->fs_fsize
);
1062 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1064 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1066 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1067 blksout(&idblk
[0], cnt
, ino
);
1071 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1072 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1080 * Collect up the data into tape record sized buffers and output them.
1083 blksout(daddr_t
*blkp
, int frags
, dump_ino_t ino
)
1085 register daddr_t
*bp
;
1086 int i
, j
, count
, blks
, tbperdb
;
1088 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1089 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1090 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1091 if (i
+ TP_NINDIR
> blks
)
1094 count
= i
+ TP_NINDIR
;
1095 for (j
= i
; j
< count
; j
++)
1096 if (blkp
[j
/ tbperdb
] != 0)
1097 spcl
.c_addr
[j
- i
] = 1;
1099 spcl
.c_addr
[j
- i
] = 0;
1100 spcl
.c_count
= count
- i
;
1102 bp
= &blkp
[i
/ tbperdb
];
1103 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1105 if (j
+ tbperdb
<= count
)
1106 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1108 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1111 spcl
.c_type
= TS_ADDR
;
1116 * Dump a map to the tape.
1119 dumpmap(char *map
, int type
, dump_ino_t ino
)
1125 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1127 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1132 * Write a header record to the dump tape.
1134 #if defined __linux__ && !defined(int32_t)
1135 #define int32_t __s32
1138 writeheader(dump_ino_t ino
)
1140 register int32_t sum
, cnt
, *lp
;
1142 spcl
.c_inumber
= ino
;
1143 spcl
.c_magic
= NFS_MAGIC
;
1144 spcl
.c_checksum
= 0;
1145 lp
= (int32_t *)&spcl
;
1147 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1148 while (--cnt
>= 0) {
1154 spcl
.c_checksum
= CHECKSUM
- sum
;
1155 writerec((char *)&spcl
, 1);
1160 getino(dump_ino_t inum
)
1162 static struct dinode dinode
;
1166 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1168 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1173 #else /* __linux__ */
1175 getino(dump_ino_t inum
)
1177 static daddr_t minino
, maxino
;
1178 static struct dinode inoblock
[MAXINOPB
];
1181 if (inum
>= minino
&& inum
< maxino
)
1182 return (&inoblock
[inum
- minino
]);
1183 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1184 (int)sblock
->fs_bsize
);
1185 minino
= inum
- (inum
% INOPB(sblock
));
1186 maxino
= minino
+ INOPB(sblock
);
1187 return (&inoblock
[inum
- minino
]);
1189 #endif /* __linux__ */
1192 * Read a chunk of data from the disk.
1193 * Try to recover from hard errors by reading in sector sized pieces.
1194 * Error recovery is attempted at most BREADEMAX times before seeking
1195 * consent from the operator to continue.
1197 int breaderrors
= 0;
1198 #define BREADEMAX 32
1201 bread(daddr_t blkno
, char *buf
, int size
)
1208 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1209 (((ext2_loff_t
)blkno
) << dev_bshift
))
1211 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1212 ((off_t
)blkno
<< dev_bshift
))
1214 msg("bread: lseek fails\n");
1215 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1217 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1219 * Trying to read the final fragment.
1221 * NB - dump only works in TP_BSIZE blocks, hence
1222 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1223 * It should be smarter about not actually trying to
1224 * read more than it can get, but for the time being
1225 * we punt and scale back the read only when it gets
1226 * us into trouble. (mkm 9/25/83)
1232 msg("read error from %s: %s: [block %d]: count=%d\n",
1233 disk
, strerror(errno
), blkno
, size
);
1235 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1236 disk
, blkno
, size
, cnt
);
1237 if (++breaderrors
> BREADEMAX
) {
1238 msg("More than %d block read errors from %d\n",
1240 broadcast("DUMP IS AILING!\n");
1241 msg("This is an unrecoverable error.\n");
1242 if (!query("Do you want to attempt to continue?")){
1249 * Zero buffer, then try to read each sector of buffer separately.
1251 memset(buf
, 0, size
);
1252 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1254 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1255 (((ext2_loff_t
)blkno
) << dev_bshift
))
1257 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1258 ((off_t
)blkno
<< dev_bshift
))
1260 msg("bread: lseek2 fails!\n");
1261 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1264 msg("read error from %s: %s: [sector %d]: count=%d\n",
1265 disk
, strerror(errno
), blkno
, dev_bsize
);
1268 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1269 disk
, blkno
, dev_bsize
, cnt
);