2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <stelian@popies.net>, 1999-2000
6 * Stelian Pop <stelian@popies.net> - AlcĂ´ve <www.alcove.com>, 2000-2002
10 * Copyright (c) 1980, 1988, 1991, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid
[] =
44 "$Id: traverse.c,v 1.44 2002/04/04 08:20:23 stelian Exp $";
55 #include <sys/param.h>
58 #ifdef HAVE_EXT2FS_EXT2_FS_H
59 #include <ext2fs/ext2_fs.h>
61 #include <linux/ext2_fs.h>
63 #include <ext2fs/ext2fs.h>
64 #include <bsdcompat.h>
65 #include <compaterr.h>
68 #include <sys/vnode.h>
71 #include <ufs/fsdir.h>
72 #include <ufs/inode.h>
74 #include <ufs/ufs/dir.h>
75 #include <ufs/ufs/dinode.h>
76 #include <ufs/ffs/fs.h>
77 #endif /* __linux__ */
79 #include <protocols/dumprestore.h>
83 #define HASDUMPEDFILE 0x1
84 #define HASSUBDIRS 0x2
87 typedef u_quad_t fsizeT
;
90 typedef quad_t fsizeT
;
97 static int searchdir
__P((struct ext2_dir_entry
*dp
, int offset
,
98 int blocksize
, char *buf
, void *private));
100 static int dirindir
__P((dump_ino_t ino
, daddr_t blkno
, int level
, long *size
));
101 static void dmpindir
__P((dump_ino_t ino
, daddr_t blk
, int level
, fsizeT
*size
));
102 static int searchdir
__P((dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
));
104 static void mapfileino
__P((dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
));
106 #ifdef HAVE_EXT2_JOURNAL_INUM
107 #define ext2_journal_ino(sb) (sb->s_journal_inum)
109 #define ext2_journal_ino(sb) (*((__u32 *)sb + 0x38))
111 #ifndef HAVE_EXT2_INO_T
112 typedef ino_t ext2_ino_t
;
115 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
116 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
118 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
119 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
121 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
122 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
124 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
125 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
128 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
129 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
130 EXT2_FEATURE_INCOMPAT_FILETYPE)
132 #ifndef EXT2_RESIZE_INO
133 #define EXT2_RESIZE_INO 7
136 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
140 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
142 struct ext2_super_block
*es
= (*fs
)->super
;
143 dump_ino_t journal_ino
= ext2_journal_ino(es
);
145 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
146 msg("This is a journal, not a filesystem!\n");
147 retval
= EXT2_ET_UNSUPP_FEATURE
;
150 else if ((retval
= es
->s_feature_incompat
&
151 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
152 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
153 msg("Unsupported feature(s) 0x%x in filesystem\n",
155 retval
= EXT2_ET_UNSUPP_FEATURE
;
159 if (es
->s_feature_compat
&
160 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
162 do_exclude_ino(journal_ino
, "journal inode");
163 do_exclude_ino(EXT2_RESIZE_INO
, "resize inode");
170 * This is an estimation of the number of TP_BSIZE blocks in the file.
171 * It estimates the number of blocks in files with holes by assuming
172 * that all of the blocks accounted for by di_blocks are data blocks
173 * (when some of the blocks are usually used for indirect pointers);
174 * hence the estimate may be high.
177 blockest(struct dinode
const *dp
)
179 long blkest
, sizeest
;
183 * dp->di_size is the size of the file in bytes.
184 * dp->di_blocks stores the number of sectors actually in the file.
185 * If there are more sectors than the size would indicate, this just
186 * means that there are indirect blocks in the file or unused
187 * sectors in the last file block; we can safely ignore these
188 * (blkest = sizeest below).
189 * If the file is bigger than the number of sectors would indicate,
190 * then the file has holes in it. In this case we must use the
191 * block count to estimate the number of data blocks used, but
192 * we use the actual size for estimating the number of indirect
193 * dump blocks (sizeest vs. blkest in the indirect block
196 blkest
= howmany((u_quad_t
)dp
->di_blocks
*fs
->blocksize
, TP_BSIZE
);
197 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
198 sizeest
= howmany(i_size
, TP_BSIZE
);
199 if (blkest
> sizeest
)
202 if (i_size
> fs
->blocksize
* NDADDR
) {
203 /* calculate the number of indirect blocks on the dump tape */
205 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
206 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
209 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
210 /* calculate the number of indirect blocks on the dump tape */
212 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
219 /* Auxiliary macro to pick up files changed since previous dump. */
220 #define CSINCE(dp, t) \
221 ((dp)->di_ctime >= (t))
222 #define MSINCE(dp, t) \
223 ((dp)->di_mtime >= (t))
224 #define CHANGEDSINCE(dp, t) \
225 (CSINCE(dp, t) || MSINCE(dp, t))
227 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
229 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
231 #define NODUMP_FLAG(dp) 0
234 /* The WANTTODUMP macro decides whether a file should be dumped. */
235 #define WANTTODUMP(dp, ino) \
236 (CHANGEDSINCE(dp, spcl.c_ddate) && \
237 (!NODUMP_FLAG(dp)) && \
241 * Determine if given inode should be dumped. "dp" must either point to a
242 * copy of the given inode, or be NULL (in which case it is fetched.)
245 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
250 * Skip inode if we've already marked it for dumping
252 if (TSTINO(ino
, usedinomap
))
256 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
259 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
263 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
264 * used map. All inode but dirs who have the nodump attribute go
267 SETINO(ino
, usedinomap
);
270 SETINO(ino
, dumpdirmap
);
271 if (WANTTODUMP(dp
, ino
)) {
272 SETINO(ino
, dumpinomap
);
273 if (!MSINCE(dp
, spcl
.c_ddate
))
274 SETINO(ino
, metainomap
);
275 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
278 *tapesize
+= blockest(dp
);
282 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
283 CLRINO(ino
, usedinomap
);
291 * Walk the inode list for a filesystem to find all allocated inodes
292 * that have been modified since the previous dump time. Also, find all
293 * the directories in the filesystem.
297 mapfiles(dump_ino_t maxino
, long *tapesize
)
300 int anydirskipped
= 0;
301 ext2_inode_scan scan
;
303 struct ext2_inode inode
;
306 * We use libext2fs's inode scanning routines, which are particularly
307 * robust. (Note that getino cannot return an error.)
309 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
311 com_err(disk
, err
, "while opening inodes\n");
315 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
316 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
319 com_err(disk
, err
, "while scanning inode #%ld\n",
327 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
330 ext2fs_close_inode_scan(scan
);
333 * Restore gets very upset if the root is not dumped,
334 * so ensure that it always is dumped.
336 SETINO(ROOTINO
, dumpinomap
);
337 return (anydirskipped
);
341 mapfiles(dump_ino_t maxino
, long *tapesize
)
344 int anydirskipped
= 0;
346 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
347 mapfileino(ino
, tapesize
, &anydirskipped
);
350 * Restore gets very upset if the root is not dumped,
351 * so ensure that it always is dumped.
353 SETINO(ROOTINO
, dumpinomap
);
354 return (anydirskipped
);
356 #endif /* __linux__ */
360 maponefile(dump_ino_t maxino
, long *tapesize
, char *directory
)
364 char dir_name
[MAXPATHLEN
];
365 int i
, anydirskipped
= 0;
368 * Mark every directory in the path as being dumped
370 for (i
= 0; i
< strlen (directory
); i
++) {
371 if (directory
[i
] == '/') {
372 strncpy (dir_name
, directory
, i
);
374 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
,
377 com_err(disk
, retval
,
378 "while translating %s", dir_name
);
381 mapfileino((dump_ino_t
) dir_ino
, 0,
382 tapesize
, &anydirskipped
);
386 * Mark the final directory
388 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
390 com_err(disk
, retval
, "while translating %s", directory
);
393 mapfileino((dump_ino_t
)dir_ino
, 0, tapesize
, &anydirskipped
);
395 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
398 * Restore gets very upset if the root is not dumped,
399 * so ensure that it always is dumped.
401 SETINO(ROOTINO
, dumpdirmap
);
402 return anydirskipped
;
404 #endif /* __linux__ */
407 struct mapfile_context
{
413 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
415 struct dinode
const *dp
;
418 struct mapfile_context
*mfc
;
422 mfc
= (struct mapfile_context
*)private;
423 dp
= getino(dirent
->inode
);
425 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
427 mode
= dp
->di_mode
& IFMT
;
428 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
429 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
430 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
431 ( dirent
->name_len
& 0xFF ) != 2)) {
432 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
433 mapfilesindir
, private);
444 * Walk the inode list for a filesystem to find all allocated inodes
445 * that have been modified since the previous dump time. Also, find all
446 * the directories in the filesystem.
449 mapfilesfromdir(dump_ino_t maxino
, long *tapesize
, char *directory
)
452 struct mapfile_context mfc
;
454 char dir_name
[MAXPATHLEN
];
455 int i
, anydirskipped
= 0;
458 * Mark every directory in the path as being dumped
460 for (i
= 0; i
< strlen (directory
); i
++) {
461 if (directory
[i
] == '/') {
462 strncpy (dir_name
, directory
, i
);
464 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
467 com_err(disk
, retval
, "while translating %s",
471 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
475 * Mark the final directory
477 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
479 com_err(disk
, retval
, "while translating %s", directory
);
482 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
484 mfc
.tapesize
= tapesize
;
485 mfc
.anydirskipped
= &anydirskipped
;
486 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
490 com_err(disk
, retval
, "while mapping files in %s", directory
);
494 * Ensure that the root inode actually appears in the file list
497 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
499 * Restore gets very upset if the root is not dumped,
500 * so ensure that it always is dumped.
502 SETINO(ROOTINO
, dumpinomap
);
503 return anydirskipped
;
508 struct mapdirs_context
{
518 * Scan each directory on the filesystem to see if it has any modified
519 * files in it. If it does, and has not already been added to the dump
520 * list (because it was itself modified), then add it. If a directory
521 * has not been modified itself, contains no modified files and has no
522 * subdirectories, then it can be deleted from the dump list and from
523 * the list of directories. By deleting it from the list of directories,
524 * its parent may now qualify for the same treatment on this or a later
525 * pass using this algorithm.
528 mapdirs(dump_ino_t maxino
, long *tapesize
)
538 struct mapdirs_context mdc
;
540 int ret
, change
= 0, nodump
;
542 isdir
= 0; /* XXX just to get gcc to shut up */
543 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
544 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
549 * If dir has been removed from the used map, it's either
550 * because it had the nodump flag, or it herited it from
551 * its parent. A directory can't be in dumpinomap if not
552 * in usedinomap, but we have to go through it anyway
553 * to propagate the nodump attribute.
555 nodump
= (TSTINO(ino
, usedinomap
) == 0);
556 if ((isdir
& 1) == 0 ||
557 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
564 mdc
.tapesize
= tapesize
;
565 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
566 #else /* __linux__ */
567 filesize
= dp
->di_size
;
568 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
569 if (dp
->di_db
[i
] != 0)
570 ret
|= searchdir(ino
, dp
->di_db
[i
],
571 (long)dblksize(sblock
, dp
, i
),
573 if (ret
& HASDUMPEDFILE
)
576 filesize
-= sblock
->fs_bsize
;
578 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
579 if (dp
->di_ib
[i
] == 0)
581 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
583 #endif /* __linux__ */
584 if (ret
& HASDUMPEDFILE
) {
585 SETINO(ino
, dumpinomap
);
586 *tapesize
+= blockest(dp
);
591 if (ret
& HASSUBDIRS
)
592 change
= 1; /* subdirs have inherited nodump */
593 CLRINO(ino
, dumpdirmap
);
594 } else if ((ret
& HASSUBDIRS
) == 0) {
595 if (!TSTINO(ino
, dumpinomap
)) {
596 CLRINO(ino
, dumpdirmap
);
606 * Read indirect blocks, and pass the data blocks to be searched
607 * as directories. Quit as soon as any entry is found that will
608 * require the directory to be dumped.
611 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
615 daddr_t idblk
[MAXNINDIR
];
617 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
618 if (ind_level
<= 0) {
619 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
622 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
624 if (ret
& HASDUMPEDFILE
)
627 *filesize
-= sblock
->fs_bsize
;
632 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
635 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
639 #endif /* !__linux__ */
642 * Scan a disk block containing directory information looking to see if
643 * any of the entries are on the dump list and to see if the directory
644 * contains any subdirectories.
648 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
650 struct mapdirs_context
*mdc
;
655 mdc
= (struct mapdirs_context
*)private;
657 tapesize
= mdc
->tapesize
;
661 if (dp
->name
[0] == '.') {
662 if (( dp
->name_len
& 0xFF ) == 1)
664 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
668 ip
= getino(dp
->inode
);
669 if (TSTINO(dp
->inode
, dumpinomap
)) {
670 CLRINO(dp
->inode
, dumpinomap
);
671 CLRINO(dp
->inode
, usedinomap
);
672 *tapesize
-= blockest(ip
);
674 /* Add dir back to the dir map, to propagate nodump */
675 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
676 SETINO(dp
->inode
, dumpdirmap
);
680 if (TSTINO(dp
->inode
, dumpinomap
)) {
681 *ret
|= HASDUMPEDFILE
;
682 if (*ret
& HASSUBDIRS
)
685 if (TSTINO(dp
->inode
, dumpdirmap
)) {
687 if (*ret
& HASDUMPEDFILE
)
694 #else /* __linux__ */
697 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
703 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
706 for (loc
= 0; loc
< size
; ) {
707 dp
= (struct direct
*)(dblk
+ loc
);
708 if (dp
->d_reclen
== 0) {
709 msg("corrupted directory, inumber %d\n", ino
);
715 if (dp
->d_name
[0] == '.') {
716 if (dp
->d_name
[1] == '\0')
718 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
721 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
722 ret
|= HASDUMPEDFILE
;
723 if (ret
& HASSUBDIRS
)
726 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
728 if (ret
& HASDUMPEDFILE
)
734 #endif /* __linux__ */
738 struct block_context
{
747 * Dump a block to the tape
750 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
751 blk_t ref_block
, int ref_offset
, void * private)
753 struct block_context
*p
;
756 if (blockcnt
< NDADDR
)
758 p
= (struct block_context
*)private;
759 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
760 p
->buf
[p
->cnt
++] = 0;
761 if (p
->cnt
== p
->max
) {
762 blksout (p
->buf
, p
->cnt
, p
->ino
);
766 p
->buf
[p
->cnt
++] = *blocknr
;
767 if (p
->cnt
== p
->max
) {
768 blksout (p
->buf
, p
->cnt
, p
->ino
);
771 p
->next_block
= blockcnt
+ 1;
777 * Dump passes 3 and 4.
779 * Dump the contents of an inode to tape.
782 dumpino(struct dinode
*dp
, dump_ino_t ino
, int metaonly
)
785 fsizeT size
, remaining
;
787 struct old_bsd_inode obi
;
790 struct block_context bc
;
799 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
803 dumpmap(dumpinomap
, TS_BITS
, ino
);
805 CLRINO(ino
, dumpinomap
);
807 memset(&obi
, 0, sizeof(obi
));
808 obi
.di_mode
= dp
->di_mode
;
809 obi
.di_uid
= dp
->di_uid
;
810 obi
.di_gid
= dp
->di_gid
;
811 obi
.di_qsize
.v
= i_size
;
812 obi
.di_atime
= dp
->di_atime
;
813 obi
.di_mtime
= dp
->di_mtime
;
814 obi
.di_ctime
= dp
->di_ctime
;
815 obi
.di_nlink
= dp
->di_nlink
;
816 obi
.di_blocks
= dp
->di_blocks
;
817 obi
.di_flags
= dp
->di_flags
;
818 obi
.di_gen
= dp
->di_gen
;
819 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
821 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
822 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
823 #else /* __linux__ */
825 #endif /* __linux__ */
826 spcl
.c_type
= TS_INODE
;
829 if (metaonly
&& (dp
->di_mode
& S_IFMT
)) {
830 printf("Write header with spcl.c_count=%d\n",spcl
.c_count
);
831 spcl
.c_flags
|= DR_METAONLY
;
834 spcl
.c_flags
&= ~DR_METAONLY
;
838 switch (dp
->di_mode
& S_IFMT
) {
848 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
854 * Check for short symbolic link.
858 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
862 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
863 buf
[dp
->di_size
] = '\0';
867 #endif /* __linux__ */
869 if (dp
->di_size
> 0 &&
870 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
874 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
875 buf
[dp
->di_size
] = '\0';
898 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
901 if (i_size
> NDADDR
* sblock
->fs_bsize
)
903 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
905 cnt
= NDADDR
* sblock
->fs_frag
;
908 cnt
= howmany(i_size
, sblock
->fs_fsize
);
909 blksout(&dp
->di_db
[0], cnt
, ino
);
910 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
913 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
914 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
917 bc
.next_block
= NDADDR
;
919 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
920 /* deal with holes at the end of the inode */
921 if (i_size
> ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
) {
922 remaining
= i_size
- ((u_quad_t
)bc
.next_block
) * sblock
->fs_fsize
;
923 for (i
= 0; i
< howmany(remaining
, sblock
->fs_fsize
); i
++) {
924 bc
.buf
[bc
.cnt
++] = 0;
925 if (bc
.cnt
== bc
.max
) {
926 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
932 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
936 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
937 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
946 struct convert_dir_context
{
954 * This function converts an ext2fs directory entry to the BSD format.
956 * Basically, it adds a null-character at the end of the name, recomputes the
957 * size of the entry, and creates it in a temporary buffer
960 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
962 struct convert_dir_context
*p
;
963 struct olddirect
*dp
;
966 p
= (struct convert_dir_context
*)private;
968 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
969 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
970 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
971 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
972 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
975 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
976 dp
->d_ino
= dirent
->inode
;
977 dp
->d_reclen
= reclen
;
978 dp
->d_namlen
= dirent
->name_len
& 0xFF;
979 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
980 dp
->d_name
[dp
->d_namlen
] = '\0';
981 p
->prev_offset
= p
->offset
;
990 * Dumps a directory to tape after converting it to the BSD format
993 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
997 struct old_bsd_inode obi
;
998 struct convert_dir_context cdc
;
1000 struct ext2_dir_entry
*de
;
1005 dumpmap(dumpinomap
, TS_BITS
, ino
);
1007 CLRINO(ino
, dumpinomap
);
1010 * Convert the directory to the BSD format
1012 /* Allocate a buffer for the conversion (twice the size of the
1013 ext2fs directory to avoid problems ;-) */
1014 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
1015 if (cdc
.buf
== NULL
)
1016 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1017 (unsigned long)ino
);
1019 cdc
.prev_offset
= 0;
1020 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
1021 /* Do the conversion */
1022 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
1024 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
1027 /* Fix the last entry */
1028 if ((cdc
.offset
% cdc
.bs
) != 0) {
1029 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
1030 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1031 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1034 dir_size
= cdc
.offset
;
1037 memset(&obi
, 0, sizeof(obi
));
1038 obi
.di_mode
= dp
->di_mode
;
1039 obi
.di_uid
= dp
->di_uid
;
1040 obi
.di_gid
= dp
->di_gid
;
1041 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
1042 obi
.di_atime
= dp
->di_atime
;
1043 obi
.di_mtime
= dp
->di_mtime
;
1044 obi
.di_ctime
= dp
->di_ctime
;
1045 obi
.di_nlink
= dp
->di_nlink
;
1046 obi
.di_blocks
= dp
->di_blocks
;
1047 obi
.di_flags
= dp
->di_flags
;
1048 obi
.di_gen
= dp
->di_gen
;
1049 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
1050 if (dp
->di_file_acl
)
1051 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
1052 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
1053 #else /* __linux__ */
1054 spcl
.c_dinode
= *dp
;
1055 #endif /* __linux__ */
1056 spcl
.c_type
= TS_INODE
;
1058 switch (dp
->di_mode
& S_IFMT
) {
1069 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1074 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1075 dp
->di_mode
& IFMT
, ino
);
1078 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1082 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1084 spcl
.c_type
= TS_ADDR
;
1087 (void)free(cdc
.buf
);
1089 #endif /* __linux__ */
1093 * Read indirect blocks, and pass the data blocks to be dumped.
1096 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1103 daddr_t idblk
[MAXNINDIR
];
1106 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1109 * My RedHat 4.0 system doesn't have these flags; I haven't
1110 * upgraded e2fsprogs yet
1112 #if defined(EXT2_FLAG_SWAP_BYTES)
1113 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1114 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1117 max
= sblock
->fs_bsize
>> 2;
1118 swapme
= (blk_t
*) idblk
;
1119 for (i
= 0; i
< max
; i
++, swapme
++)
1120 *swapme
= ext2fs_swab32(*swapme
);
1122 #endif /* __linux__ */
1124 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1125 if (ind_level
<= 0) {
1126 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1127 cnt
= howmany(*size
, sblock
->fs_fsize
);
1130 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1132 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1134 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1135 blksout(&idblk
[0], cnt
, ino
);
1139 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1140 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1148 * Collect up the data into tape record sized buffers and output them.
1151 blksout(daddr_t
*blkp
, int frags
, dump_ino_t ino
)
1154 int i
, j
, count
, blks
, tbperdb
;
1156 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1157 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1158 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1159 if (i
+ TP_NINDIR
> blks
)
1162 count
= i
+ TP_NINDIR
;
1163 for (j
= i
; j
< count
; j
++)
1164 if (blkp
[j
/ tbperdb
] != 0)
1165 spcl
.c_addr
[j
- i
] = 1;
1167 spcl
.c_addr
[j
- i
] = 0;
1168 spcl
.c_count
= count
- i
;
1170 bp
= &blkp
[i
/ tbperdb
];
1171 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1173 if (j
+ tbperdb
<= count
)
1174 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1176 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1179 spcl
.c_type
= TS_ADDR
;
1184 * Dump a map to the tape.
1187 dumpmap(char *map
, int type
, dump_ino_t ino
)
1193 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1195 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1199 #if defined __linux__ && !defined(int32_t)
1200 #define int32_t __s32
1204 * Compute and fill in checksum information.
1207 mkchecksum(union u_spcl
*tmpspcl
)
1209 int32_t sum
, cnt
, *lp
;
1211 tmpspcl
->s_spcl
.c_checksum
= 0;
1212 lp
= (int32_t *)&tmpspcl
->s_spcl
;
1214 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1215 while (--cnt
>= 0) {
1221 tmpspcl
->s_spcl
.c_checksum
= CHECKSUM
- sum
;
1225 * Write a header record to the dump tape.
1228 writeheader(dump_ino_t ino
)
1230 spcl
.c_inumber
= ino
;
1231 spcl
.c_magic
= NFS_MAGIC
;
1232 mkchecksum((union u_spcl
*)&spcl
);
1233 writerec((char *)&spcl
, 1);
1238 getino(dump_ino_t inum
)
1240 static struct dinode dinode
;
1244 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1246 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1251 #else /* __linux__ */
1253 getino(dump_ino_t inum
)
1255 static daddr_t minino
, maxino
;
1256 static struct dinode inoblock
[MAXINOPB
];
1259 if (inum
>= minino
&& inum
< maxino
)
1260 return (&inoblock
[inum
- minino
]);
1261 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1262 (int)sblock
->fs_bsize
);
1263 minino
= inum
- (inum
% INOPB(sblock
));
1264 maxino
= minino
+ INOPB(sblock
);
1265 return (&inoblock
[inum
- minino
]);
1267 #endif /* __linux__ */
1270 * Read a chunk of data from the disk.
1271 * Try to recover from hard errors by reading in sector sized pieces.
1272 * Error recovery is attempted at most breademax times before seeking
1273 * consent from the operator to continue.
1275 int breaderrors
= 0;
1278 bread(daddr_t blkno
, char *buf
, int size
)
1285 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1286 (((ext2_loff_t
)blkno
) << dev_bshift
))
1288 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1289 ((off_t
)blkno
<< dev_bshift
))
1291 msg("bread: lseek fails\n");
1292 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1294 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1296 * Trying to read the final fragment.
1298 * NB - dump only works in TP_BSIZE blocks, hence
1299 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1300 * It should be smarter about not actually trying to
1301 * read more than it can get, but for the time being
1302 * we punt and scale back the read only when it gets
1303 * us into trouble. (mkm 9/25/83)
1309 msg("read error from %s: %s: [block %d]: count=%d\n",
1310 disk
, strerror(errno
), blkno
, size
);
1312 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1313 disk
, blkno
, size
, cnt
);
1314 if (++breaderrors
> breademax
) {
1315 msg("More than %d block read errors from %d\n",
1317 broadcast("DUMP IS AILING!\n");
1318 msg("This is an unrecoverable error.\n");
1319 if (!query("Do you want to attempt to continue?")){
1326 * Zero buffer, then try to read each sector of buffer separately.
1328 memset(buf
, 0, size
);
1329 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1331 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1332 (((ext2_loff_t
)blkno
) << dev_bshift
))
1334 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1335 ((off_t
)blkno
<< dev_bshift
))
1337 msg("bread: lseek2 fails!\n");
1338 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1341 msg("read error from %s: %s: [sector %d]: count=%d\n",
1342 disk
, strerror(errno
), blkno
, dev_bsize
);
1345 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1346 disk
, blkno
, dev_bsize
, cnt
);