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 1.25 2000/12/21 11:14:54 stelian Exp $";
48 #include <sys/param.h>
51 #include <linux/ext2_fs.h>
52 #include <bsdcompat.h>
53 #include <compaterr.h>
55 #define swab32(x) ext2fs_swab32(x)
59 #include <sys/vnode.h>
62 #include <ufs/fsdir.h>
63 #include <ufs/inode.h>
65 #include <ufs/ufs/dir.h>
66 #include <ufs/ufs/dinode.h>
67 #include <ufs/ffs/fs.h>
69 #endif /* __linux__ */
71 #include <protocols/dumprestore.h>
81 #include <ext2fs/ext2fs.h>
86 #define HASDUMPEDFILE 0x1
87 #define HASSUBDIRS 0x2
90 typedef u_quad_t fsizeT
;
93 typedef quad_t fsizeT
;
100 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
101 int blocksize
, char *buf
, void *private));
103 static int dirindir
__P((ino_t ino
, daddr_t blkno
, int level
, long *size
));
104 static void dmpindir
__P((ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
105 static int searchdir
__P((ino_t ino
, daddr_t blkno
, long size
, long filesize
));
107 static void mapfileino
__P((ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
));
108 static int exclude_ino
__P((ino_t ino
));
110 /* #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 */
111 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
112 #define FORCE_OPEN EXT2_FLAG_FORCE
117 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
122 retval
= ext2fs_open(disk
, FORCE_OPEN
, 0, 0, unix_io_manager
, fs
);
123 #if defined(EXT2_LIB_FEATURE_COMPAT_SUPP) && defined(EXT2_LIB_FEATURE_INCOMPAT_SUPP) && defined(EXT2_LIB_FEATURE_RO_COMPAT_SUPP) && defined(EXT2_ET_UNSUPP_FEATURE) && defined(EXT2_ET_RO_UNSUPP_FEATURE)
125 s
= (struct ext2fs_sb
*) (*fs
)->super
;
126 if ((s
->s_feature_compat
& ~EXT2_LIB_FEATURE_COMPAT_SUPP
) ||
127 #ifdef EXT3_FEATURE_INCOMPAT_RECOVER
128 (s
->s_feature_incompat
& ~(EXT3_FEATURE_INCOMPAT_RECOVER
| EXT2_LIB_FEATURE_INCOMPAT_SUPP
))) {
130 (s
->s_feature_incompat
& ~EXT2_LIB_FEATURE_INCOMPAT_SUPP
)) {
132 retval
= EXT2_ET_UNSUPP_FEATURE
;
134 else if (s
->s_feature_ro_compat
& ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP
) {
135 retval
= EXT2_ET_RO_UNSUPP_FEATURE
;
138 #endif /* defined && defined && defined... */
143 * This is an estimation of the number of TP_BSIZE blocks in the file.
144 * It estimates the number of blocks in files with holes by assuming
145 * that all of the blocks accounted for by di_blocks are data blocks
146 * (when some of the blocks are usually used for indirect pointers);
147 * hence the estimate may be high.
150 blockest(struct dinode
const *dp
)
152 long blkest
, sizeest
;
156 * dp->di_size is the size of the file in bytes.
157 * dp->di_blocks stores the number of sectors actually in the file.
158 * If there are more sectors than the size would indicate, this just
159 * means that there are indirect blocks in the file or unused
160 * sectors in the last file block; we can safely ignore these
161 * (blkest = sizeest below).
162 * If the file is bigger than the number of sectors would indicate,
163 * then the file has holes in it. In this case we must use the
164 * block count to estimate the number of data blocks used, but
165 * we use the actual size for estimating the number of indirect
166 * dump blocks (sizeest vs. blkest in the indirect block
169 blkest
= howmany((u_quad_t
)dp
->di_blocks
*fs
->blocksize
, TP_BSIZE
);
170 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
171 sizeest
= howmany(i_size
, TP_BSIZE
);
172 if (blkest
> sizeest
)
175 if (i_size
> fs
->blocksize
* NDADDR
) {
176 /* calculate the number of indirect blocks on the dump tape */
178 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
179 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
182 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
183 /* calculate the number of indirect blocks on the dump tape */
185 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
192 extern ino_t iexclude_list
[IEXCLUDE_MAXNUM
]; /* the inode exclude list */
193 extern int iexclude_num
; /* number of elements in the list */
196 * This tests whether an inode is in the exclude list
199 exclude_ino(ino_t ino
)
202 if (iexclude_num
) { /* if there are inodes in the exclude list */
203 int idx
; /* then check this inode against it */
204 for (idx
= 0; idx
< iexclude_num
; idx
++)
205 if (ino
== iexclude_list
[idx
])
211 /* Auxiliary macro to pick up files changed since previous dump. */
212 #define CHANGEDSINCE(dp, t) \
213 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
215 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
217 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
219 #define NODUMP_FLAG(dp) 0
222 /* The WANTTODUMP macro decides whether a file should be dumped. */
223 #define WANTTODUMP(dp, ino) \
224 (CHANGEDSINCE(dp, spcl.c_ddate) && \
225 (!NODUMP_FLAG(dp)) && \
229 * Determine if given inode should be dumped. "dp" must either point to a
230 * copy of the given inode, or be NULL (in which case it is fetched.)
233 mapfileino(ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
238 * Skip inode if we've already marked it for dumping
240 if (TSTINO(ino
, usedinomap
))
244 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
247 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
251 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
252 * used map. All inode but dirs who have the nodump attribute go
255 SETINO(ino
, usedinomap
);
258 SETINO(ino
, dumpdirmap
);
259 if (WANTTODUMP(dp
, ino
)) {
260 SETINO(ino
, dumpinomap
);
261 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
264 *tapesize
+= blockest(dp
);
268 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
269 CLRINO(ino
, usedinomap
);
277 * Walk the inode list for a filesystem to find all allocated inodes
278 * that have been modified since the previous dump time. Also, find all
279 * the directories in the filesystem.
283 mapfiles(ino_t maxino
, long *tapesize
)
286 int anydirskipped
= 0;
287 ext2_inode_scan scan
;
289 struct ext2_inode inode
;
292 * We use libext2fs's inode scanning routines, which are particularly
293 * robust. (Note that getino cannot return an error.)
295 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
297 com_err(disk
, err
, "while opening inodes\n");
301 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
302 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
305 com_err(disk
, err
, "while scanning inode #%ld\n",
313 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
316 ext2fs_close_inode_scan(scan
);
319 * Restore gets very upset if the root is not dumped,
320 * so ensure that it always is dumped.
322 SETINO(ROOTINO
, dumpinomap
);
323 return (anydirskipped
);
327 mapfiles(ino_t maxino
, long *tapesize
)
330 int anydirskipped
= 0;
332 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
333 mapfileino(ino
, tapesize
, &anydirskipped
);
336 * Restore gets very upset if the root is not dumped,
337 * so ensure that it always is dumped.
339 SETINO(ROOTINO
, dumpinomap
);
340 return (anydirskipped
);
342 #endif /* __linux__ */
345 struct mapfile_context
{
351 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
353 register struct dinode
const *dp
;
356 struct mapfile_context
*mfc
;
360 mfc
= (struct mapfile_context
*)private;
361 dp
= getino(dirent
->inode
);
363 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
365 mode
= dp
->di_mode
& IFMT
;
366 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
367 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
368 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
369 ( dirent
->name_len
& 0xFF ) != 2)) {
370 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
371 mapfilesindir
, private);
382 * Walk the inode list for a filesystem to find all allocated inodes
383 * that have been modified since the previous dump time. Also, find all
384 * the directories in the filesystem.
387 mapfilesfromdir(ino_t maxino
, long *tapesize
, char *directory
)
390 struct mapfile_context mfc
;
392 char dir_name
[MAXPATHLEN
];
393 int i
, anydirskipped
= 0;
396 * Mark every directory in the path as being dumped
398 for (i
= 0; i
< strlen (directory
); i
++) {
399 if (directory
[i
] == '/') {
400 strncpy (dir_name
, directory
, i
);
402 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
405 com_err(disk
, retval
, "while translating %s",
409 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
413 * Mark the final directory
415 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
417 com_err(disk
, retval
, "while translating %s", directory
);
420 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
422 mfc
.tapesize
= tapesize
;
423 mfc
.anydirskipped
= &anydirskipped
;
424 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
428 com_err(disk
, retval
, "while mapping files in %s", directory
);
432 * Ensure that the root inode actually appears in the file list
435 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
437 * Restore gets very upset if the root is not dumped,
438 * so ensure that it always is dumped.
440 SETINO(ROOTINO
, dumpinomap
);
441 return anydirskipped
;
446 struct mapdirs_context
{
456 * Scan each directory on the filesystem to see if it has any modified
457 * files in it. If it does, and has not already been added to the dump
458 * list (because it was itself modified), then add it. If a directory
459 * has not been modified itself, contains no modified files and has no
460 * subdirectories, then it can be deleted from the dump list and from
461 * the list of directories. By deleting it from the list of directories,
462 * its parent may now qualify for the same treatment on this or a later
463 * pass using this algorithm.
466 mapdirs(ino_t maxino
, long *tapesize
)
468 register struct dinode
*dp
;
476 struct mapdirs_context mdc
;
478 int ret
, change
= 0, nodump
;
480 isdir
= 0; /* XXX just to get gcc to shut up */
481 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
482 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
487 * If dir has been removed from the used map, it's either
488 * because it had the nodump flag, or it herited it from
489 * its parent. A directory can't be in dumpinomap if not
490 * in usedinomap, but we have to go through it anyway
491 * to propagate the nodump attribute.
493 nodump
= (TSTINO(ino
, usedinomap
) == 0);
494 if ((isdir
& 1) == 0 ||
495 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
502 mdc
.tapesize
= tapesize
;
503 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
504 #else /* __linux__ */
505 filesize
= dp
->di_size
;
506 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
507 if (dp
->di_db
[i
] != 0)
508 ret
|= searchdir(ino
, dp
->di_db
[i
],
509 (long)dblksize(sblock
, dp
, i
),
511 if (ret
& HASDUMPEDFILE
)
514 filesize
-= sblock
->fs_bsize
;
516 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
517 if (dp
->di_ib
[i
] == 0)
519 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
521 #endif /* __linux__ */
522 if (ret
& HASDUMPEDFILE
) {
523 SETINO(ino
, dumpinomap
);
524 *tapesize
+= blockest(dp
);
529 if (ret
& HASSUBDIRS
)
530 change
= 1; /* subdirs have inherited nodump */
531 CLRINO(ino
, dumpdirmap
);
532 } else if ((ret
& HASSUBDIRS
) == 0) {
533 if (!TSTINO(ino
, dumpinomap
)) {
534 CLRINO(ino
, dumpdirmap
);
544 * Read indirect blocks, and pass the data blocks to be searched
545 * as directories. Quit as soon as any entry is found that will
546 * require the directory to be dumped.
549 dirindir(ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
553 daddr_t idblk
[MAXNINDIR
];
555 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
556 if (ind_level
<= 0) {
557 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
560 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
562 if (ret
& HASDUMPEDFILE
)
565 *filesize
-= sblock
->fs_bsize
;
570 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
573 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
577 #endif /* !__linux__ */
580 * Scan a disk block containing directory information looking to see if
581 * any of the entries are on the dump list and to see if the directory
582 * contains any subdirectories.
586 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
588 struct mapdirs_context
*mdc
;
593 mdc
= (struct mapdirs_context
*)private;
595 tapesize
= mdc
->tapesize
;
599 if (dp
->name
[0] == '.') {
600 if (( dp
->name_len
& 0xFF ) == 1)
602 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
606 ip
= getino(dp
->inode
);
607 if (TSTINO(dp
->inode
, dumpinomap
)) {
608 CLRINO(dp
->inode
, dumpinomap
);
609 CLRINO(dp
->inode
, usedinomap
);
610 *tapesize
-= blockest(ip
);
612 /* Add dir back to the dir map, to propagate nodump */
613 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
614 SETINO(dp
->inode
, dumpdirmap
);
618 if (TSTINO(dp
->inode
, dumpinomap
)) {
619 *ret
|= HASDUMPEDFILE
;
620 if (*ret
& HASSUBDIRS
)
623 if (TSTINO(dp
->inode
, dumpdirmap
)) {
625 if (*ret
& HASDUMPEDFILE
)
632 #else /* __linux__ */
635 searchdir(ino_t ino
, daddr_t blkno
, long size
, long filesize
)
637 register struct direct
*dp
;
638 register long loc
, ret
= 0;
641 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
644 for (loc
= 0; loc
< size
; ) {
645 dp
= (struct direct
*)(dblk
+ loc
);
646 if (dp
->d_reclen
== 0) {
647 msg("corrupted directory, inumber %d\n", ino
);
653 if (dp
->d_name
[0] == '.') {
654 if (dp
->d_name
[1] == '\0')
656 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
659 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
660 ret
|= HASDUMPEDFILE
;
661 if (ret
& HASSUBDIRS
)
664 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
666 if (ret
& HASDUMPEDFILE
)
672 #endif /* __linux__ */
676 struct block_context
{
685 * Dump a block to the tape
688 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
689 blk_t ref_block
, int ref_offset
, void * private)
691 struct block_context
*p
;
694 if (blockcnt
< NDADDR
)
696 p
= (struct block_context
*)private;
697 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
698 p
->buf
[p
->cnt
++] = 0;
699 if (p
->cnt
== p
->max
) {
700 blksout (p
->buf
, p
->cnt
, p
->ino
);
704 p
->buf
[p
->cnt
++] = *blocknr
;
705 if (p
->cnt
== p
->max
) {
706 blksout (p
->buf
, p
->cnt
, p
->ino
);
709 p
->next_block
= blockcnt
+ 1;
715 * Dump passes 3 and 4.
717 * Dump the contents of an inode to tape.
720 dumpino(struct dinode
*dp
, ino_t ino
)
725 struct old_bsd_inode obi
;
727 struct block_context bc
;
731 u_quad_t i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
735 dumpmap(dumpinomap
, TS_BITS
, ino
);
737 CLRINO(ino
, dumpinomap
);
739 memset(&obi
, 0, sizeof(obi
));
740 obi
.di_mode
= dp
->di_mode
;
741 obi
.di_uid
= dp
->di_uid
;
742 obi
.di_gid
= dp
->di_gid
;
743 obi
.di_qsize
.v
= i_size
;
744 obi
.di_atime
= dp
->di_atime
;
745 obi
.di_mtime
= dp
->di_mtime
;
746 obi
.di_ctime
= dp
->di_ctime
;
747 obi
.di_nlink
= dp
->di_nlink
;
748 obi
.di_blocks
= dp
->di_blocks
;
749 obi
.di_flags
= dp
->di_flags
;
750 obi
.di_gen
= dp
->di_gen
;
751 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
753 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
754 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
755 #else /* __linux__ */
757 #endif /* __linux__ */
758 spcl
.c_type
= TS_INODE
;
760 switch (dp
->di_mode
& S_IFMT
) {
770 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
776 * Check for short symbolic link.
780 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
784 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
785 buf
[dp
->di_size
] = '\0';
789 #endif /* __linux__ */
791 if (dp
->di_size
> 0 &&
792 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
796 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
797 buf
[dp
->di_size
] = '\0';
820 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
823 if (i_size
> NDADDR
* sblock
->fs_bsize
)
825 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
827 cnt
= NDADDR
* sblock
->fs_frag
;
830 cnt
= howmany(i_size
, sblock
->fs_fsize
);
831 blksout(&dp
->di_db
[0], cnt
, ino
);
832 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
835 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
836 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
839 bc
.next_block
= NDADDR
;
841 ext2fs_block_iterate2(fs
, ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
843 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
847 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
848 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
857 struct convert_dir_context
{
865 * This function converts an ext2fs directory entry to the BSD format.
867 * Basically, it adds a null-character at the end of the name, recomputes the
868 * size of the entry, and creates it in a temporary buffer
871 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
873 struct convert_dir_context
*p
;
874 struct olddirect
*dp
;
877 p
= (struct convert_dir_context
*)private;
879 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
880 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
881 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
882 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
883 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
886 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
887 dp
->d_ino
= dirent
->inode
;
888 dp
->d_reclen
= reclen
;
889 dp
->d_namlen
= dirent
->name_len
& 0xFF;
890 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
891 dp
->d_name
[dp
->d_namlen
] = '\0';
892 p
->prev_offset
= p
->offset
;
901 * Dumps a directory to tape after converting it to the BSD format
904 dumpdirino(struct dinode
*dp
, ino_t ino
)
908 struct old_bsd_inode obi
;
909 struct convert_dir_context cdc
;
911 struct ext2_dir_entry
*de
;
916 dumpmap(dumpinomap
, TS_BITS
, ino
);
918 CLRINO(ino
, dumpinomap
);
921 * Convert the directory to the BSD format
923 /* Allocate a buffer for the conversion (twice the size of the
924 ext2fs directory to avoid problems ;-) */
925 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
927 err(1, "Cannot allocate buffer to convert directory #%lu\n",
931 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
932 /* Do the conversion */
933 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
935 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
938 /* Fix the last entry */
939 if ((cdc
.offset
% cdc
.bs
) != 0) {
940 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
941 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
942 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
945 dir_size
= cdc
.offset
;
948 memset(&obi
, 0, sizeof(obi
));
949 obi
.di_mode
= dp
->di_mode
;
950 obi
.di_uid
= dp
->di_uid
;
951 obi
.di_gid
= dp
->di_gid
;
952 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
953 obi
.di_atime
= dp
->di_atime
;
954 obi
.di_mtime
= dp
->di_mtime
;
955 obi
.di_ctime
= dp
->di_ctime
;
956 obi
.di_nlink
= dp
->di_nlink
;
957 obi
.di_blocks
= dp
->di_blocks
;
958 obi
.di_flags
= dp
->di_flags
;
959 obi
.di_gen
= dp
->di_gen
;
960 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
962 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
963 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
964 #else /* __linux__ */
966 #endif /* __linux__ */
967 spcl
.c_type
= TS_INODE
;
969 switch (dp
->di_mode
& S_IFMT
) {
980 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
985 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
986 dp
->di_mode
& IFMT
, ino
);
989 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
993 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
995 spcl
.c_type
= TS_ADDR
;
1000 #endif /* __linux__ */
1004 * Read indirect blocks, and pass the data blocks to be dumped.
1007 dmpindir(ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1014 daddr_t idblk
[MAXNINDIR
];
1017 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1020 * My RedHat 4.0 system doesn't have these flags; I haven't
1021 * upgraded e2fsprogs yet
1023 #if defined(EXT2_FLAG_SWAP_BYTES)
1024 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1025 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
)) {
1027 max
= sblock
->fs_bsize
>> 2;
1028 swapme
= (blk_t
*) idblk
;
1029 for (i
= 0; i
< max
; i
++, swapme
++)
1030 *swapme
= swab32(*swapme
);
1031 #if defined(EXT2_FLAG_SWAP_BYTES)
1036 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1037 if (ind_level
<= 0) {
1038 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1039 cnt
= howmany(*size
, sblock
->fs_fsize
);
1042 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1044 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1046 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1047 blksout(&idblk
[0], cnt
, ino
);
1051 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1052 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1060 * Collect up the data into tape record sized buffers and output them.
1063 blksout(daddr_t
*blkp
, int frags
, ino_t ino
)
1065 register daddr_t
*bp
;
1066 int i
, j
, count
, blks
, tbperdb
;
1068 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1069 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1070 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1071 if (i
+ TP_NINDIR
> blks
)
1074 count
= i
+ TP_NINDIR
;
1075 for (j
= i
; j
< count
; j
++)
1076 if (blkp
[j
/ tbperdb
] != 0)
1077 spcl
.c_addr
[j
- i
] = 1;
1079 spcl
.c_addr
[j
- i
] = 0;
1080 spcl
.c_count
= count
- i
;
1082 bp
= &blkp
[i
/ tbperdb
];
1083 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1085 if (j
+ tbperdb
<= count
)
1086 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1088 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1091 spcl
.c_type
= TS_ADDR
;
1096 * Dump a map to the tape.
1099 dumpmap(char *map
, int type
, ino_t ino
)
1105 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1107 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1112 * Write a header record to the dump tape.
1115 writeheader(ino_t ino
)
1118 register __s32 sum
, cnt
, *lp
;
1120 register int32_t sum
, cnt
, *lp
;
1123 spcl
.c_inumber
= ino
;
1124 spcl
.c_magic
= NFS_MAGIC
;
1125 spcl
.c_checksum
= 0;
1127 lp
= (__s32
*)&spcl
;
1129 lp
= (int32_t *)&spcl
;
1133 cnt
= sizeof(union u_spcl
) / (4 * sizeof(__s32
));
1135 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1137 while (--cnt
>= 0) {
1143 spcl
.c_checksum
= CHECKSUM
- sum
;
1144 writerec((char *)&spcl
, 1);
1151 static struct dinode dinode
;
1155 err
= ext2fs_read_inode(fs
, inum
, (struct ext2_inode
*) &dinode
);
1157 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1162 #else /* __linux__ */
1166 static daddr_t minino
, maxino
;
1167 static struct dinode inoblock
[MAXINOPB
];
1170 if (inum
>= minino
&& inum
< maxino
)
1171 return (&inoblock
[inum
- minino
]);
1172 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1173 (int)sblock
->fs_bsize
);
1174 minino
= inum
- (inum
% INOPB(sblock
));
1175 maxino
= minino
+ INOPB(sblock
);
1176 return (&inoblock
[inum
- minino
]);
1178 #endif /* __linux__ */
1181 * Read a chunk of data from the disk.
1182 * Try to recover from hard errors by reading in sector sized pieces.
1183 * Error recovery is attempted at most BREADEMAX times before seeking
1184 * consent from the operator to continue.
1186 int breaderrors
= 0;
1187 #define BREADEMAX 32
1190 bread(daddr_t blkno
, char *buf
, int size
)
1197 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1198 (((ext2_loff_t
)blkno
) << dev_bshift
))
1200 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1201 ((off_t
)blkno
<< dev_bshift
))
1203 msg("bread: lseek fails\n");
1204 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1206 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1208 * Trying to read the final fragment.
1210 * NB - dump only works in TP_BSIZE blocks, hence
1211 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1212 * It should be smarter about not actually trying to
1213 * read more than it can get, but for the time being
1214 * we punt and scale back the read only when it gets
1215 * us into trouble. (mkm 9/25/83)
1221 msg("read error from %s: %s: [block %d]: count=%d\n",
1222 disk
, strerror(errno
), blkno
, size
);
1224 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1225 disk
, blkno
, size
, cnt
);
1226 if (++breaderrors
> BREADEMAX
) {
1227 msg("More than %d block read errors from %d\n",
1229 broadcast("DUMP IS AILING!\n");
1230 msg("This is an unrecoverable error.\n");
1231 if (!query("Do you want to attempt to continue?")){
1238 * Zero buffer, then try to read each sector of buffer separately.
1240 memset(buf
, 0, size
);
1241 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1243 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1244 (((ext2_loff_t
)blkno
) << dev_bshift
))
1246 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1247 ((off_t
)blkno
<< dev_bshift
))
1249 msg("bread: lseek2 fails!\n");
1250 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1253 msg("read error from %s: %s: [sector %d]: count=%d\n",
1254 disk
, strerror(errno
), blkno
, dev_bsize
);
1257 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1258 disk
, blkno
, dev_bsize
, cnt
);