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 1.29 2001/03/21 09:37:13 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 #define ext2_ino_t __u32
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)
132 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
136 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
138 struct ext2_super_block
*es
= (*fs
)->super
;
139 ext2_ino_t journal_ino
= ext2_journal_ino(es
);
141 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
142 fprintf(stderr
, "This an journal, not a filesystem!\n");
143 retval
= EXT2_ET_UNSUPP_FEATURE
;
146 else if ((retval
= es
->s_feature_incompat
&
147 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
148 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
150 "Unsupported feature(s) 0x%x in filesystem\n",
152 retval
= EXT2_ET_UNSUPP_FEATURE
;
155 else if (es
->s_feature_compat
&
156 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
158 !exclude_ino((dump_ino_t
)journal_ino
)) {
159 iexclude_list
[iexclude_num
++] = (dump_ino_t
)journal_ino
;
160 msg("Added ext3 journal inode %d to exclude list\n",
168 * This is an estimation of the number of TP_BSIZE blocks in the file.
169 * It estimates the number of blocks in files with holes by assuming
170 * that all of the blocks accounted for by di_blocks are data blocks
171 * (when some of the blocks are usually used for indirect pointers);
172 * hence the estimate may be high.
175 blockest(struct dinode
const *dp
)
177 long blkest
, sizeest
;
181 * dp->di_size is the size of the file in bytes.
182 * dp->di_blocks stores the number of sectors actually in the file.
183 * If there are more sectors than the size would indicate, this just
184 * means that there are indirect blocks in the file or unused
185 * sectors in the last file block; we can safely ignore these
186 * (blkest = sizeest below).
187 * If the file is bigger than the number of sectors would indicate,
188 * then the file has holes in it. In this case we must use the
189 * block count to estimate the number of data blocks used, but
190 * we use the actual size for estimating the number of indirect
191 * dump blocks (sizeest vs. blkest in the indirect block
194 blkest
= howmany((u_quad_t
)dp
->di_blocks
*fs
->blocksize
, TP_BSIZE
);
195 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
196 sizeest
= howmany(i_size
, TP_BSIZE
);
197 if (blkest
> sizeest
)
200 if (i_size
> fs
->blocksize
* NDADDR
) {
201 /* calculate the number of indirect blocks on the dump tape */
203 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
204 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
207 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
208 /* calculate the number of indirect blocks on the dump tape */
210 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
218 * This tests whether an inode is in the exclude list
221 exclude_ino(dump_ino_t ino
)
224 if (iexclude_num
) { /* if there are inodes in the exclude list */
225 int idx
; /* then check this inode against it */
226 for (idx
= 0; idx
< iexclude_num
; idx
++)
227 if (ino
== iexclude_list
[idx
])
233 /* Auxiliary macro to pick up files changed since previous dump. */
234 #define CHANGEDSINCE(dp, t) \
235 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
237 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
239 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
241 #define NODUMP_FLAG(dp) 0
244 /* The WANTTODUMP macro decides whether a file should be dumped. */
245 #define WANTTODUMP(dp, ino) \
246 (CHANGEDSINCE(dp, spcl.c_ddate) && \
247 (!NODUMP_FLAG(dp)) && \
251 * Determine if given inode should be dumped. "dp" must either point to a
252 * copy of the given inode, or be NULL (in which case it is fetched.)
255 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
260 * Skip inode if we've already marked it for dumping
262 if (TSTINO(ino
, usedinomap
))
266 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
269 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
273 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
274 * used map. All inode but dirs who have the nodump attribute go
277 SETINO(ino
, usedinomap
);
280 SETINO(ino
, dumpdirmap
);
281 if (WANTTODUMP(dp
, ino
)) {
282 SETINO(ino
, dumpinomap
);
283 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
286 *tapesize
+= blockest(dp
);
290 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
291 CLRINO(ino
, usedinomap
);
299 * Walk the inode list for a filesystem to find all allocated inodes
300 * that have been modified since the previous dump time. Also, find all
301 * the directories in the filesystem.
305 mapfiles(dump_ino_t maxino
, long *tapesize
)
308 int anydirskipped
= 0;
309 ext2_inode_scan scan
;
311 struct ext2_inode inode
;
314 * We use libext2fs's inode scanning routines, which are particularly
315 * robust. (Note that getino cannot return an error.)
317 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
319 com_err(disk
, err
, "while opening inodes\n");
323 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
324 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
327 com_err(disk
, err
, "while scanning inode #%ld\n",
335 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
338 ext2fs_close_inode_scan(scan
);
341 * Restore gets very upset if the root is not dumped,
342 * so ensure that it always is dumped.
344 SETINO(ROOTINO
, dumpinomap
);
345 return (anydirskipped
);
349 mapfiles(dump_ino_t maxino
, long *tapesize
)
351 register dump_ino_t ino
;
352 int anydirskipped
= 0;
354 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
355 mapfileino(ino
, tapesize
, &anydirskipped
);
358 * Restore gets very upset if the root is not dumped,
359 * so ensure that it always is dumped.
361 SETINO(ROOTINO
, dumpinomap
);
362 return (anydirskipped
);
364 #endif /* __linux__ */
367 struct mapfile_context
{
373 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
375 register struct dinode
const *dp
;
378 struct mapfile_context
*mfc
;
382 mfc
= (struct mapfile_context
*)private;
383 dp
= getino(dirent
->inode
);
385 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
387 mode
= dp
->di_mode
& IFMT
;
388 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
389 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
390 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
391 ( dirent
->name_len
& 0xFF ) != 2)) {
392 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
393 mapfilesindir
, private);
404 * Walk the inode list for a filesystem to find all allocated inodes
405 * that have been modified since the previous dump time. Also, find all
406 * the directories in the filesystem.
409 mapfilesfromdir(dump_ino_t maxino
, long *tapesize
, char *directory
)
412 struct mapfile_context mfc
;
414 char dir_name
[MAXPATHLEN
];
415 int i
, anydirskipped
= 0;
418 * Mark every directory in the path as being dumped
420 for (i
= 0; i
< strlen (directory
); i
++) {
421 if (directory
[i
] == '/') {
422 strncpy (dir_name
, directory
, i
);
424 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
427 com_err(disk
, retval
, "while translating %s",
431 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
435 * Mark the final directory
437 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
439 com_err(disk
, retval
, "while translating %s", directory
);
442 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
444 mfc
.tapesize
= tapesize
;
445 mfc
.anydirskipped
= &anydirskipped
;
446 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
450 com_err(disk
, retval
, "while mapping files in %s", directory
);
454 * Ensure that the root inode actually appears in the file list
457 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
459 * Restore gets very upset if the root is not dumped,
460 * so ensure that it always is dumped.
462 SETINO(ROOTINO
, dumpinomap
);
463 return anydirskipped
;
468 struct mapdirs_context
{
478 * Scan each directory on the filesystem to see if it has any modified
479 * files in it. If it does, and has not already been added to the dump
480 * list (because it was itself modified), then add it. If a directory
481 * has not been modified itself, contains no modified files and has no
482 * subdirectories, then it can be deleted from the dump list and from
483 * the list of directories. By deleting it from the list of directories,
484 * its parent may now qualify for the same treatment on this or a later
485 * pass using this algorithm.
488 mapdirs(dump_ino_t maxino
, long *tapesize
)
490 register struct dinode
*dp
;
493 register dump_ino_t ino
;
498 struct mapdirs_context mdc
;
500 int ret
, change
= 0, nodump
;
502 isdir
= 0; /* XXX just to get gcc to shut up */
503 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
504 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
509 * If dir has been removed from the used map, it's either
510 * because it had the nodump flag, or it herited it from
511 * its parent. A directory can't be in dumpinomap if not
512 * in usedinomap, but we have to go through it anyway
513 * to propagate the nodump attribute.
515 nodump
= (TSTINO(ino
, usedinomap
) == 0);
516 if ((isdir
& 1) == 0 ||
517 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
524 mdc
.tapesize
= tapesize
;
525 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
526 #else /* __linux__ */
527 filesize
= dp
->di_size
;
528 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
529 if (dp
->di_db
[i
] != 0)
530 ret
|= searchdir(ino
, dp
->di_db
[i
],
531 (long)dblksize(sblock
, dp
, i
),
533 if (ret
& HASDUMPEDFILE
)
536 filesize
-= sblock
->fs_bsize
;
538 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
539 if (dp
->di_ib
[i
] == 0)
541 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
543 #endif /* __linux__ */
544 if (ret
& HASDUMPEDFILE
) {
545 SETINO(ino
, dumpinomap
);
546 *tapesize
+= blockest(dp
);
551 if (ret
& HASSUBDIRS
)
552 change
= 1; /* subdirs have inherited nodump */
553 CLRINO(ino
, dumpdirmap
);
554 } else if ((ret
& HASSUBDIRS
) == 0) {
555 if (!TSTINO(ino
, dumpinomap
)) {
556 CLRINO(ino
, dumpdirmap
);
566 * Read indirect blocks, and pass the data blocks to be searched
567 * as directories. Quit as soon as any entry is found that will
568 * require the directory to be dumped.
571 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
575 daddr_t idblk
[MAXNINDIR
];
577 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
578 if (ind_level
<= 0) {
579 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
582 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
584 if (ret
& HASDUMPEDFILE
)
587 *filesize
-= sblock
->fs_bsize
;
592 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
595 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
599 #endif /* !__linux__ */
602 * Scan a disk block containing directory information looking to see if
603 * any of the entries are on the dump list and to see if the directory
604 * contains any subdirectories.
608 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
610 struct mapdirs_context
*mdc
;
615 mdc
= (struct mapdirs_context
*)private;
617 tapesize
= mdc
->tapesize
;
621 if (dp
->name
[0] == '.') {
622 if (( dp
->name_len
& 0xFF ) == 1)
624 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
628 ip
= getino(dp
->inode
);
629 if (TSTINO(dp
->inode
, dumpinomap
)) {
630 CLRINO(dp
->inode
, dumpinomap
);
631 CLRINO(dp
->inode
, usedinomap
);
632 *tapesize
-= blockest(ip
);
634 /* Add dir back to the dir map, to propagate nodump */
635 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
636 SETINO(dp
->inode
, dumpdirmap
);
640 if (TSTINO(dp
->inode
, dumpinomap
)) {
641 *ret
|= HASDUMPEDFILE
;
642 if (*ret
& HASSUBDIRS
)
645 if (TSTINO(dp
->inode
, dumpdirmap
)) {
647 if (*ret
& HASDUMPEDFILE
)
654 #else /* __linux__ */
657 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
659 register struct direct
*dp
;
660 register long loc
, ret
= 0;
663 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
666 for (loc
= 0; loc
< size
; ) {
667 dp
= (struct direct
*)(dblk
+ loc
);
668 if (dp
->d_reclen
== 0) {
669 msg("corrupted directory, inumber %d\n", ino
);
675 if (dp
->d_name
[0] == '.') {
676 if (dp
->d_name
[1] == '\0')
678 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
681 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
682 ret
|= HASDUMPEDFILE
;
683 if (ret
& HASSUBDIRS
)
686 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
688 if (ret
& HASDUMPEDFILE
)
694 #endif /* __linux__ */
698 struct block_context
{
707 * Dump a block to the tape
710 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
711 blk_t ref_block
, int ref_offset
, void * private)
713 struct block_context
*p
;
716 if (blockcnt
< NDADDR
)
718 p
= (struct block_context
*)private;
719 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
720 p
->buf
[p
->cnt
++] = 0;
721 if (p
->cnt
== p
->max
) {
722 blksout (p
->buf
, p
->cnt
, p
->ino
);
726 p
->buf
[p
->cnt
++] = *blocknr
;
727 if (p
->cnt
== p
->max
) {
728 blksout (p
->buf
, p
->cnt
, p
->ino
);
731 p
->next_block
= blockcnt
+ 1;
737 * Dump passes 3 and 4.
739 * Dump the contents of an inode to tape.
742 dumpino(struct dinode
*dp
, dump_ino_t ino
)
747 struct old_bsd_inode obi
;
749 struct block_context bc
;
753 u_quad_t i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
757 dumpmap(dumpinomap
, TS_BITS
, ino
);
759 CLRINO(ino
, dumpinomap
);
761 memset(&obi
, 0, sizeof(obi
));
762 obi
.di_mode
= dp
->di_mode
;
763 obi
.di_uid
= dp
->di_uid
;
764 obi
.di_gid
= dp
->di_gid
;
765 obi
.di_qsize
.v
= i_size
;
766 obi
.di_atime
= dp
->di_atime
;
767 obi
.di_mtime
= dp
->di_mtime
;
768 obi
.di_ctime
= dp
->di_ctime
;
769 obi
.di_nlink
= dp
->di_nlink
;
770 obi
.di_blocks
= dp
->di_blocks
;
771 obi
.di_flags
= dp
->di_flags
;
772 obi
.di_gen
= dp
->di_gen
;
773 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
775 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
776 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
777 #else /* __linux__ */
779 #endif /* __linux__ */
780 spcl
.c_type
= TS_INODE
;
782 switch (dp
->di_mode
& S_IFMT
) {
792 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
798 * Check for short symbolic link.
802 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
806 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
807 buf
[dp
->di_size
] = '\0';
811 #endif /* __linux__ */
813 if (dp
->di_size
> 0 &&
814 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
818 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
819 buf
[dp
->di_size
] = '\0';
842 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
845 if (i_size
> NDADDR
* sblock
->fs_bsize
)
847 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
849 cnt
= NDADDR
* sblock
->fs_frag
;
852 cnt
= howmany(i_size
, sblock
->fs_fsize
);
853 blksout(&dp
->di_db
[0], cnt
, ino
);
854 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
857 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
858 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
861 bc
.next_block
= NDADDR
;
863 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
865 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
869 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
870 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
879 struct convert_dir_context
{
887 * This function converts an ext2fs directory entry to the BSD format.
889 * Basically, it adds a null-character at the end of the name, recomputes the
890 * size of the entry, and creates it in a temporary buffer
893 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
895 struct convert_dir_context
*p
;
896 struct olddirect
*dp
;
899 p
= (struct convert_dir_context
*)private;
901 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
902 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
903 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
904 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
905 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
908 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
909 dp
->d_ino
= dirent
->inode
;
910 dp
->d_reclen
= reclen
;
911 dp
->d_namlen
= dirent
->name_len
& 0xFF;
912 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
913 dp
->d_name
[dp
->d_namlen
] = '\0';
914 p
->prev_offset
= p
->offset
;
923 * Dumps a directory to tape after converting it to the BSD format
926 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
930 struct old_bsd_inode obi
;
931 struct convert_dir_context cdc
;
933 struct ext2_dir_entry
*de
;
938 dumpmap(dumpinomap
, TS_BITS
, ino
);
940 CLRINO(ino
, dumpinomap
);
943 * Convert the directory to the BSD format
945 /* Allocate a buffer for the conversion (twice the size of the
946 ext2fs directory to avoid problems ;-) */
947 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
949 err(1, "Cannot allocate buffer to convert directory #%lu\n",
953 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
954 /* Do the conversion */
955 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
957 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
960 /* Fix the last entry */
961 if ((cdc
.offset
% cdc
.bs
) != 0) {
962 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
963 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
964 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
967 dir_size
= cdc
.offset
;
970 memset(&obi
, 0, sizeof(obi
));
971 obi
.di_mode
= dp
->di_mode
;
972 obi
.di_uid
= dp
->di_uid
;
973 obi
.di_gid
= dp
->di_gid
;
974 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
975 obi
.di_atime
= dp
->di_atime
;
976 obi
.di_mtime
= dp
->di_mtime
;
977 obi
.di_ctime
= dp
->di_ctime
;
978 obi
.di_nlink
= dp
->di_nlink
;
979 obi
.di_blocks
= dp
->di_blocks
;
980 obi
.di_flags
= dp
->di_flags
;
981 obi
.di_gen
= dp
->di_gen
;
982 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
984 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
985 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
986 #else /* __linux__ */
988 #endif /* __linux__ */
989 spcl
.c_type
= TS_INODE
;
991 switch (dp
->di_mode
& S_IFMT
) {
1002 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1007 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1008 dp
->di_mode
& IFMT
, ino
);
1011 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1015 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1017 spcl
.c_type
= TS_ADDR
;
1020 (void)free(cdc
.buf
);
1022 #endif /* __linux__ */
1026 * Read indirect blocks, and pass the data blocks to be dumped.
1029 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1036 daddr_t idblk
[MAXNINDIR
];
1039 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1042 * My RedHat 4.0 system doesn't have these flags; I haven't
1043 * upgraded e2fsprogs yet
1045 #if defined(EXT2_FLAG_SWAP_BYTES)
1046 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1047 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1050 max
= sblock
->fs_bsize
>> 2;
1051 swapme
= (blk_t
*) idblk
;
1052 for (i
= 0; i
< max
; i
++, swapme
++)
1053 *swapme
= ext2fs_swab32(*swapme
);
1055 #endif /* __linux__ */
1057 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1058 if (ind_level
<= 0) {
1059 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1060 cnt
= howmany(*size
, sblock
->fs_fsize
);
1063 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1065 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1067 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1068 blksout(&idblk
[0], cnt
, ino
);
1072 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1073 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1081 * Collect up the data into tape record sized buffers and output them.
1084 blksout(daddr_t
*blkp
, int frags
, dump_ino_t ino
)
1086 register daddr_t
*bp
;
1087 int i
, j
, count
, blks
, tbperdb
;
1089 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1090 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1091 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1092 if (i
+ TP_NINDIR
> blks
)
1095 count
= i
+ TP_NINDIR
;
1096 for (j
= i
; j
< count
; j
++)
1097 if (blkp
[j
/ tbperdb
] != 0)
1098 spcl
.c_addr
[j
- i
] = 1;
1100 spcl
.c_addr
[j
- i
] = 0;
1101 spcl
.c_count
= count
- i
;
1103 bp
= &blkp
[i
/ tbperdb
];
1104 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1106 if (j
+ tbperdb
<= count
)
1107 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1109 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1112 spcl
.c_type
= TS_ADDR
;
1117 * Dump a map to the tape.
1120 dumpmap(char *map
, int type
, dump_ino_t ino
)
1126 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1128 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1133 * Write a header record to the dump tape.
1135 #if defined __linux__ && !defined(int32_t)
1136 #define int32_t __s32
1139 writeheader(dump_ino_t ino
)
1141 register int32_t sum
, cnt
, *lp
;
1143 spcl
.c_inumber
= ino
;
1144 spcl
.c_magic
= NFS_MAGIC
;
1145 spcl
.c_checksum
= 0;
1146 lp
= (int32_t *)&spcl
;
1148 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1149 while (--cnt
>= 0) {
1155 spcl
.c_checksum
= CHECKSUM
- sum
;
1156 writerec((char *)&spcl
, 1);
1161 getino(dump_ino_t inum
)
1163 static struct dinode dinode
;
1167 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1169 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1174 #else /* __linux__ */
1176 getino(dump_ino_t inum
)
1178 static daddr_t minino
, maxino
;
1179 static struct dinode inoblock
[MAXINOPB
];
1182 if (inum
>= minino
&& inum
< maxino
)
1183 return (&inoblock
[inum
- minino
]);
1184 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1185 (int)sblock
->fs_bsize
);
1186 minino
= inum
- (inum
% INOPB(sblock
));
1187 maxino
= minino
+ INOPB(sblock
);
1188 return (&inoblock
[inum
- minino
]);
1190 #endif /* __linux__ */
1193 * Read a chunk of data from the disk.
1194 * Try to recover from hard errors by reading in sector sized pieces.
1195 * Error recovery is attempted at most BREADEMAX times before seeking
1196 * consent from the operator to continue.
1198 int breaderrors
= 0;
1199 #define BREADEMAX 32
1202 bread(daddr_t blkno
, char *buf
, int size
)
1209 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1210 (((ext2_loff_t
)blkno
) << dev_bshift
))
1212 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1213 ((off_t
)blkno
<< dev_bshift
))
1215 msg("bread: lseek fails\n");
1216 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1218 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1220 * Trying to read the final fragment.
1222 * NB - dump only works in TP_BSIZE blocks, hence
1223 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1224 * It should be smarter about not actually trying to
1225 * read more than it can get, but for the time being
1226 * we punt and scale back the read only when it gets
1227 * us into trouble. (mkm 9/25/83)
1233 msg("read error from %s: %s: [block %d]: count=%d\n",
1234 disk
, strerror(errno
), blkno
, size
);
1236 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1237 disk
, blkno
, size
, cnt
);
1238 if (++breaderrors
> BREADEMAX
) {
1239 msg("More than %d block read errors from %d\n",
1241 broadcast("DUMP IS AILING!\n");
1242 msg("This is an unrecoverable error.\n");
1243 if (!query("Do you want to attempt to continue?")){
1250 * Zero buffer, then try to read each sector of buffer separately.
1252 memset(buf
, 0, size
);
1253 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1255 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1256 (((ext2_loff_t
)blkno
) << dev_bshift
))
1258 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1259 ((off_t
)blkno
<< dev_bshift
))
1261 msg("bread: lseek2 fails!\n");
1262 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1265 msg("read error from %s: %s: [sector %d]: count=%d\n",
1266 disk
, strerror(errno
), blkno
, dev_bsize
);
1269 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1270 disk
, blkno
, dev_bsize
, cnt
);