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 1.34 2001/06/18 10:58:28 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
));
105 static int exclude_ino
__P((dump_ino_t ino
));
106 extern dump_ino_t iexclude_list
[IEXCLUDE_MAXNUM
]; /* the inode exclude list */
107 extern int iexclude_num
; /* number of elements in list */
109 #ifdef HAVE_EXT2_JOURNAL_INUM
110 #define ext2_journal_ino(sb) (sb->s_journal_inum)
112 #define ext2_journal_ino(sb) (*((__u32 *)sb + 0x38))
114 #ifndef HAVE_EXT2_INO_T
115 typedef ino_t ext2_ino_t
;
118 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
119 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
121 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
122 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
124 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
125 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
127 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
128 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
131 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
132 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
133 EXT2_FEATURE_INCOMPAT_FILETYPE)
135 #ifndef EXT2_RESIZE_INO
136 #define EXT2_RESIZE_INO 7
139 int dump_fs_open(const char *disk
, ext2_filsys
*fs
)
143 retval
= ext2fs_open(disk
, EXT2_FLAG_FORCE
, 0, 0, unix_io_manager
, fs
);
145 struct ext2_super_block
*es
= (*fs
)->super
;
146 dump_ino_t journal_ino
= ext2_journal_ino(es
);
148 if (es
->s_feature_incompat
& EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
){
149 fprintf(stderr
, "This an journal, not a filesystem!\n");
150 retval
= EXT2_ET_UNSUPP_FEATURE
;
153 else if ((retval
= es
->s_feature_incompat
&
154 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP
|
155 EXT3_FEATURE_INCOMPAT_RECOVER
))) {
157 "Unsupported feature(s) 0x%x in filesystem\n",
159 retval
= EXT2_ET_UNSUPP_FEATURE
;
163 if (es
->s_feature_compat
&
164 EXT3_FEATURE_COMPAT_HAS_JOURNAL
&&
165 journal_ino
&& !exclude_ino(journal_ino
)) {
166 iexclude_list
[iexclude_num
++] = journal_ino
;
167 msg("Exclude ext3 journal inode %u\n",
170 if (!exclude_ino(EXT2_RESIZE_INO
))
171 iexclude_list
[iexclude_num
++] = EXT2_RESIZE_INO
;
178 * This is an estimation of the number of TP_BSIZE blocks in the file.
179 * It estimates the number of blocks in files with holes by assuming
180 * that all of the blocks accounted for by di_blocks are data blocks
181 * (when some of the blocks are usually used for indirect pointers);
182 * hence the estimate may be high.
185 blockest(struct dinode
const *dp
)
187 long blkest
, sizeest
;
191 * dp->di_size is the size of the file in bytes.
192 * dp->di_blocks stores the number of sectors actually in the file.
193 * If there are more sectors than the size would indicate, this just
194 * means that there are indirect blocks in the file or unused
195 * sectors in the last file block; we can safely ignore these
196 * (blkest = sizeest below).
197 * If the file is bigger than the number of sectors would indicate,
198 * then the file has holes in it. In this case we must use the
199 * block count to estimate the number of data blocks used, but
200 * we use the actual size for estimating the number of indirect
201 * dump blocks (sizeest vs. blkest in the indirect block
204 blkest
= howmany((u_quad_t
)dp
->di_blocks
*fs
->blocksize
, TP_BSIZE
);
205 i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
206 sizeest
= howmany(i_size
, TP_BSIZE
);
207 if (blkest
> sizeest
)
210 if (i_size
> fs
->blocksize
* NDADDR
) {
211 /* calculate the number of indirect blocks on the dump tape */
213 howmany(sizeest
- NDADDR
* fs
->blocksize
/ TP_BSIZE
,
214 NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
));
217 if (i_size
> sblock
->fs_bsize
* NDADDR
) {
218 /* calculate the number of indirect blocks on the dump tape */
220 howmany(sizeest
- NDADDR
* sblock
->fs_bsize
/ TP_BSIZE
,
228 * This tests whether an inode is in the exclude list
231 exclude_ino(dump_ino_t ino
)
234 if (iexclude_num
) { /* if there are inodes in the exclude list */
235 int idx
; /* then check this inode against it */
236 for (idx
= 0; idx
< iexclude_num
; idx
++)
237 if (ino
== iexclude_list
[idx
])
243 /* Auxiliary macro to pick up files changed since previous dump. */
244 #define CHANGEDSINCE(dp, t) \
245 ((dp)->di_mtime >= (t) || (dp)->di_ctime >= (t))
247 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
249 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
251 #define NODUMP_FLAG(dp) 0
254 /* The WANTTODUMP macro decides whether a file should be dumped. */
255 #define WANTTODUMP(dp, ino) \
256 (CHANGEDSINCE(dp, spcl.c_ddate) && \
257 (!NODUMP_FLAG(dp)) && \
261 * Determine if given inode should be dumped. "dp" must either point to a
262 * copy of the given inode, or be NULL (in which case it is fetched.)
265 mapfileino(dump_ino_t ino
, struct dinode
const *dp
, long *tapesize
, int *dirskipped
)
270 * Skip inode if we've already marked it for dumping
272 if (TSTINO(ino
, usedinomap
))
276 if ((mode
= (dp
->di_mode
& IFMT
)) == 0)
279 if (dp
->di_nlink
== 0 || dp
->di_dtime
!= 0)
283 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
284 * used map. All inode but dirs who have the nodump attribute go
287 SETINO(ino
, usedinomap
);
290 SETINO(ino
, dumpdirmap
);
291 if (WANTTODUMP(dp
, ino
)) {
292 SETINO(ino
, dumpinomap
);
293 if (mode
!= IFREG
&& mode
!= IFDIR
&& mode
!= IFLNK
)
296 *tapesize
+= blockest(dp
);
300 if ( NODUMP_FLAG(dp
) || exclude_ino(ino
) )
301 CLRINO(ino
, usedinomap
);
309 * Walk the inode list for a filesystem to find all allocated inodes
310 * that have been modified since the previous dump time. Also, find all
311 * the directories in the filesystem.
315 mapfiles(dump_ino_t maxino
, long *tapesize
)
318 int anydirskipped
= 0;
319 ext2_inode_scan scan
;
321 struct ext2_inode inode
;
324 * We use libext2fs's inode scanning routines, which are particularly
325 * robust. (Note that getino cannot return an error.)
327 err
= ext2fs_open_inode_scan(fs
, 0, &scan
);
329 com_err(disk
, err
, "while opening inodes\n");
333 err
= ext2fs_get_next_inode(scan
, &ino
, &inode
);
334 if (err
== EXT2_ET_BAD_BLOCK_IN_INODE_TABLE
)
337 com_err(disk
, err
, "while scanning inode #%ld\n",
345 mapfileino(ino
, (struct dinode
const *)&inode
, tapesize
,
348 ext2fs_close_inode_scan(scan
);
351 * Restore gets very upset if the root is not dumped,
352 * so ensure that it always is dumped.
354 SETINO(ROOTINO
, dumpinomap
);
355 return (anydirskipped
);
359 mapfiles(dump_ino_t maxino
, long *tapesize
)
361 register dump_ino_t ino
;
362 int anydirskipped
= 0;
364 for (ino
= ROOTINO
; ino
< maxino
; ino
++)
365 mapfileino(ino
, tapesize
, &anydirskipped
);
368 * Restore gets very upset if the root is not dumped,
369 * so ensure that it always is dumped.
371 SETINO(ROOTINO
, dumpinomap
);
372 return (anydirskipped
);
374 #endif /* __linux__ */
378 maponefile(dump_ino_t maxino
, long *tapesize
, char *directory
)
382 char dir_name
[MAXPATHLEN
];
383 int i
, anydirskipped
= 0;
386 * Mark every directory in the path as being dumped
388 for (i
= 0; i
< strlen (directory
); i
++) {
389 if (directory
[i
] == '/') {
390 strncpy (dir_name
, directory
, i
);
392 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
,
395 com_err(disk
, retval
,
396 "while translating %s", dir_name
);
399 mapfileino((dump_ino_t
) dir_ino
, 0,
400 tapesize
, &anydirskipped
);
404 * Mark the final directory
406 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
408 com_err(disk
, retval
, "while translating %s", directory
);
411 mapfileino((dump_ino_t
)dir_ino
, 0, tapesize
, &anydirskipped
);
413 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
416 * Restore gets very upset if the root is not dumped,
417 * so ensure that it always is dumped.
419 SETINO(ROOTINO
, dumpdirmap
);
420 return anydirskipped
;
422 #endif /* __linux__ */
425 struct mapfile_context
{
431 mapfilesindir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
433 register struct dinode
const *dp
;
436 struct mapfile_context
*mfc
;
440 mfc
= (struct mapfile_context
*)private;
441 dp
= getino(dirent
->inode
);
443 mapfileino(dirent
->inode
, dp
, mfc
->tapesize
, mfc
->anydirskipped
);
445 mode
= dp
->di_mode
& IFMT
;
446 if (mode
== IFDIR
&& dp
->di_nlink
!= 0 && dp
->di_dtime
== 0) {
447 if ((dirent
->name
[0] != '.' || ( dirent
->name_len
& 0xFF ) != 1) &&
448 (dirent
->name
[0] != '.' || dirent
->name
[1] != '.' ||
449 ( dirent
->name_len
& 0xFF ) != 2)) {
450 retval
= ext2fs_dir_iterate(fs
, ino
, 0, NULL
,
451 mapfilesindir
, private);
462 * Walk the inode list for a filesystem to find all allocated inodes
463 * that have been modified since the previous dump time. Also, find all
464 * the directories in the filesystem.
467 mapfilesfromdir(dump_ino_t maxino
, long *tapesize
, char *directory
)
470 struct mapfile_context mfc
;
472 char dir_name
[MAXPATHLEN
];
473 int i
, anydirskipped
= 0;
476 * Mark every directory in the path as being dumped
478 for (i
= 0; i
< strlen (directory
); i
++) {
479 if (directory
[i
] == '/') {
480 strncpy (dir_name
, directory
, i
);
482 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, dir_name
,
485 com_err(disk
, retval
, "while translating %s",
489 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
493 * Mark the final directory
495 retval
= ext2fs_namei(fs
, ROOTINO
, ROOTINO
, directory
, &dir_ino
);
497 com_err(disk
, retval
, "while translating %s", directory
);
500 mapfileino(dir_ino
, 0, tapesize
, &anydirskipped
);
502 mfc
.tapesize
= tapesize
;
503 mfc
.anydirskipped
= &anydirskipped
;
504 retval
= ext2fs_dir_iterate(fs
, dir_ino
, 0, NULL
, mapfilesindir
,
508 com_err(disk
, retval
, "while mapping files in %s", directory
);
512 * Ensure that the root inode actually appears in the file list
515 mapfileino(ROOTINO
, 0, tapesize
, &anydirskipped
);
517 * Restore gets very upset if the root is not dumped,
518 * so ensure that it always is dumped.
520 SETINO(ROOTINO
, dumpinomap
);
521 return anydirskipped
;
526 struct mapdirs_context
{
536 * Scan each directory on the filesystem to see if it has any modified
537 * files in it. If it does, and has not already been added to the dump
538 * list (because it was itself modified), then add it. If a directory
539 * has not been modified itself, contains no modified files and has no
540 * subdirectories, then it can be deleted from the dump list and from
541 * the list of directories. By deleting it from the list of directories,
542 * its parent may now qualify for the same treatment on this or a later
543 * pass using this algorithm.
546 mapdirs(dump_ino_t maxino
, long *tapesize
)
548 register struct dinode
*dp
;
551 register dump_ino_t ino
;
556 struct mapdirs_context mdc
;
558 int ret
, change
= 0, nodump
;
560 isdir
= 0; /* XXX just to get gcc to shut up */
561 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
562 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
567 * If dir has been removed from the used map, it's either
568 * because it had the nodump flag, or it herited it from
569 * its parent. A directory can't be in dumpinomap if not
570 * in usedinomap, but we have to go through it anyway
571 * to propagate the nodump attribute.
573 nodump
= (TSTINO(ino
, usedinomap
) == 0);
574 if ((isdir
& 1) == 0 ||
575 (TSTINO(ino
, dumpinomap
) && nodump
== 0))
582 mdc
.tapesize
= tapesize
;
583 ext2fs_dir_iterate(fs
, ino
, 0, NULL
, searchdir
, (void *) &mdc
);
584 #else /* __linux__ */
585 filesize
= dp
->di_size
;
586 for (ret
= 0, i
= 0; filesize
> 0 && i
< NDADDR
; i
++) {
587 if (dp
->di_db
[i
] != 0)
588 ret
|= searchdir(ino
, dp
->di_db
[i
],
589 (long)dblksize(sblock
, dp
, i
),
591 if (ret
& HASDUMPEDFILE
)
594 filesize
-= sblock
->fs_bsize
;
596 for (i
= 0; filesize
> 0 && i
< NIADDR
; i
++) {
597 if (dp
->di_ib
[i
] == 0)
599 ret
|= dirindir(ino
, dp
->di_ib
[i
], i
, &filesize
);
601 #endif /* __linux__ */
602 if (ret
& HASDUMPEDFILE
) {
603 SETINO(ino
, dumpinomap
);
604 *tapesize
+= blockest(dp
);
609 if (ret
& HASSUBDIRS
)
610 change
= 1; /* subdirs have inherited nodump */
611 CLRINO(ino
, dumpdirmap
);
612 } else if ((ret
& HASSUBDIRS
) == 0) {
613 if (!TSTINO(ino
, dumpinomap
)) {
614 CLRINO(ino
, dumpdirmap
);
624 * Read indirect blocks, and pass the data blocks to be searched
625 * as directories. Quit as soon as any entry is found that will
626 * require the directory to be dumped.
629 dirindir(dump_ino_t ino
, daddr_t blkno
, int ind_level
, long *filesize
)
633 daddr_t idblk
[MAXNINDIR
];
635 bread(fsbtodb(sblock
, blkno
), (char *)idblk
, (int)sblock
->fs_bsize
);
636 if (ind_level
<= 0) {
637 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
640 ret
|= searchdir(ino
, blkno
, sblock
->fs_bsize
,
642 if (ret
& HASDUMPEDFILE
)
645 *filesize
-= sblock
->fs_bsize
;
650 for (i
= 0; *filesize
> 0 && i
< NINDIR(sblock
); i
++) {
653 ret
|= dirindir(ino
, blkno
, ind_level
, filesize
);
657 #endif /* !__linux__ */
660 * Scan a disk block containing directory information looking to see if
661 * any of the entries are on the dump list and to see if the directory
662 * contains any subdirectories.
666 searchdir(struct ext2_dir_entry
*dp
, int offset
, int blocksize
, char *buf
, void *private)
668 struct mapdirs_context
*mdc
;
673 mdc
= (struct mapdirs_context
*)private;
675 tapesize
= mdc
->tapesize
;
679 if (dp
->name
[0] == '.') {
680 if (( dp
->name_len
& 0xFF ) == 1)
682 if (dp
->name
[1] == '.' && ( dp
->name_len
& 0xFF ) == 2)
686 ip
= getino(dp
->inode
);
687 if (TSTINO(dp
->inode
, dumpinomap
)) {
688 CLRINO(dp
->inode
, dumpinomap
);
689 CLRINO(dp
->inode
, usedinomap
);
690 *tapesize
-= blockest(ip
);
692 /* Add dir back to the dir map, to propagate nodump */
693 if ((ip
->di_mode
& IFMT
) == IFDIR
) {
694 SETINO(dp
->inode
, dumpdirmap
);
698 if (TSTINO(dp
->inode
, dumpinomap
)) {
699 *ret
|= HASDUMPEDFILE
;
700 if (*ret
& HASSUBDIRS
)
703 if (TSTINO(dp
->inode
, dumpdirmap
)) {
705 if (*ret
& HASDUMPEDFILE
)
712 #else /* __linux__ */
715 searchdir(dump_ino_t ino
, daddr_t blkno
, long size
, long filesize
)
717 register struct direct
*dp
;
718 register long loc
, ret
= 0;
721 bread(fsbtodb(sblock
, blkno
), dblk
, (int)size
);
724 for (loc
= 0; loc
< size
; ) {
725 dp
= (struct direct
*)(dblk
+ loc
);
726 if (dp
->d_reclen
== 0) {
727 msg("corrupted directory, inumber %d\n", ino
);
733 if (dp
->d_name
[0] == '.') {
734 if (dp
->d_name
[1] == '\0')
736 if (dp
->d_name
[1] == '.' && dp
->d_name
[2] == '\0')
739 if (TSTINO(dp
->d_ino
, dumpinomap
)) {
740 ret
|= HASDUMPEDFILE
;
741 if (ret
& HASSUBDIRS
)
744 if (TSTINO(dp
->d_ino
, dumpdirmap
)) {
746 if (ret
& HASDUMPEDFILE
)
752 #endif /* __linux__ */
756 struct block_context
{
765 * Dump a block to the tape
768 dumponeblock(ext2_filsys fs
, blk_t
*blocknr
, e2_blkcnt_t blockcnt
,
769 blk_t ref_block
, int ref_offset
, void * private)
771 struct block_context
*p
;
774 if (blockcnt
< NDADDR
)
776 p
= (struct block_context
*)private;
777 for (i
= p
->next_block
; i
< blockcnt
; i
++) {
778 p
->buf
[p
->cnt
++] = 0;
779 if (p
->cnt
== p
->max
) {
780 blksout (p
->buf
, p
->cnt
, p
->ino
);
784 p
->buf
[p
->cnt
++] = *blocknr
;
785 if (p
->cnt
== p
->max
) {
786 blksout (p
->buf
, p
->cnt
, p
->ino
);
789 p
->next_block
= blockcnt
+ 1;
795 * Dump passes 3 and 4.
797 * Dump the contents of an inode to tape.
800 dumpino(struct dinode
*dp
, dump_ino_t ino
)
803 fsizeT size
, remaining
;
805 struct old_bsd_inode obi
;
808 struct block_context bc
;
812 u_quad_t i_size
= dp
->di_size
+ ((u_quad_t
) dp
->di_size_high
<< 32);
816 dumpmap(dumpinomap
, TS_BITS
, ino
);
818 CLRINO(ino
, dumpinomap
);
820 memset(&obi
, 0, sizeof(obi
));
821 obi
.di_mode
= dp
->di_mode
;
822 obi
.di_uid
= dp
->di_uid
;
823 obi
.di_gid
= dp
->di_gid
;
824 obi
.di_qsize
.v
= i_size
;
825 obi
.di_atime
= dp
->di_atime
;
826 obi
.di_mtime
= dp
->di_mtime
;
827 obi
.di_ctime
= dp
->di_ctime
;
828 obi
.di_nlink
= dp
->di_nlink
;
829 obi
.di_blocks
= dp
->di_blocks
;
830 obi
.di_flags
= dp
->di_flags
;
831 obi
.di_gen
= dp
->di_gen
;
832 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
834 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
835 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
836 #else /* __linux__ */
838 #endif /* __linux__ */
839 spcl
.c_type
= TS_INODE
;
841 switch (dp
->di_mode
& S_IFMT
) {
851 msg("Warning: dumpino called on a directory (ino %d)\n", ino
);
857 * Check for short symbolic link.
861 i_size
< EXT2_N_BLOCKS
* sizeof (daddr_t
)) {
865 memmove(buf
, dp
->di_db
, (u_long
)dp
->di_size
);
866 buf
[dp
->di_size
] = '\0';
870 #endif /* __linux__ */
872 if (dp
->di_size
> 0 &&
873 dp
->di_size
< sblock
->fs_maxsymlinklen
) {
877 memmove(buf
, dp
->di_shortlink
, (u_long
)dp
->di_size
);
878 buf
[dp
->di_size
] = '\0';
901 msg("Warning: undefined file type 0%o\n", dp
->di_mode
& IFMT
);
904 if (i_size
> NDADDR
* sblock
->fs_bsize
)
906 cnt
= NDADDR
* EXT2_FRAGS_PER_BLOCK(fs
->super
);
908 cnt
= NDADDR
* sblock
->fs_frag
;
911 cnt
= howmany(i_size
, sblock
->fs_fsize
);
912 blksout(&dp
->di_db
[0], cnt
, ino
);
913 if ((quad_t
) (size
= i_size
- NDADDR
* sblock
->fs_bsize
) <= 0)
916 bc
.max
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
917 bc
.buf
= (int *)malloc (bc
.max
* sizeof (int));
920 bc
.next_block
= NDADDR
;
922 ext2fs_block_iterate2(fs
, (ext2_ino_t
)ino
, 0, NULL
, dumponeblock
, (void *)&bc
);
923 /* deal with holes at the end of the inode */
924 remaining
= i_size
- bc
.next_block
*sblock
->fs_fsize
;
926 for (i
= 0; i
< howmany(remaining
, sblock
->fs_fsize
); i
++) {
927 bc
.buf
[bc
.cnt
++] = 0;
928 if (bc
.cnt
== bc
.max
) {
929 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
934 blksout (bc
.buf
, bc
.cnt
, bc
.ino
);
938 for (ind_level
= 0; ind_level
< NIADDR
; ind_level
++) {
939 dmpindir(ino
, dp
->di_ib
[ind_level
], ind_level
, &size
);
948 struct convert_dir_context
{
956 * This function converts an ext2fs directory entry to the BSD format.
958 * Basically, it adds a null-character at the end of the name, recomputes the
959 * size of the entry, and creates it in a temporary buffer
962 convert_dir(struct ext2_dir_entry
*dirent
, int offset
, int blocksize
, char *buf
, void *private)
964 struct convert_dir_context
*p
;
965 struct olddirect
*dp
;
968 p
= (struct convert_dir_context
*)private;
970 reclen
= EXT2_DIR_REC_LEN((dirent
->name_len
& 0xFF) + 1);
971 if (((p
->offset
+ reclen
- 1) / p
->bs
) != (p
->offset
/ p
->bs
)) {
972 dp
= (struct olddirect
*)(p
->buf
+ p
->prev_offset
);
973 dp
->d_reclen
+= p
->bs
- (p
->offset
% p
->bs
);
974 p
->offset
+= p
->bs
- (p
->offset
% p
->bs
);
977 dp
= (struct olddirect
*)(p
->buf
+ p
->offset
);
978 dp
->d_ino
= dirent
->inode
;
979 dp
->d_reclen
= reclen
;
980 dp
->d_namlen
= dirent
->name_len
& 0xFF;
981 strncpy(dp
->d_name
, dirent
->name
, dp
->d_namlen
);
982 dp
->d_name
[dp
->d_namlen
] = '\0';
983 p
->prev_offset
= p
->offset
;
992 * Dumps a directory to tape after converting it to the BSD format
995 dumpdirino(struct dinode
*dp
, dump_ino_t ino
)
999 struct old_bsd_inode obi
;
1000 struct convert_dir_context cdc
;
1002 struct ext2_dir_entry
*de
;
1007 dumpmap(dumpinomap
, TS_BITS
, ino
);
1009 CLRINO(ino
, dumpinomap
);
1012 * Convert the directory to the BSD format
1014 /* Allocate a buffer for the conversion (twice the size of the
1015 ext2fs directory to avoid problems ;-) */
1016 cdc
.buf
= (char *)malloc(dp
->di_size
* 2 * sizeof(char));
1017 if (cdc
.buf
== NULL
)
1018 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1019 (unsigned long)ino
);
1021 cdc
.prev_offset
= 0;
1022 cdc
.bs
= MIN(DIRBLKSIZ
, TP_BSIZE
);
1023 /* Do the conversion */
1024 retval
= ext2fs_dir_iterate(fs
, (ext2_ino_t
)ino
, 0, NULL
, convert_dir
, (void *)&cdc
);
1026 com_err(disk
, retval
, "while converting directory #%ld\n", (long)ino
);
1029 /* Fix the last entry */
1030 if ((cdc
.offset
% cdc
.bs
) != 0) {
1031 de
= (struct ext2_dir_entry
*)(cdc
.buf
+ cdc
.prev_offset
);
1032 de
->rec_len
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1033 cdc
.offset
+= cdc
.bs
- (cdc
.offset
% cdc
.bs
);
1036 dir_size
= cdc
.offset
;
1039 memset(&obi
, 0, sizeof(obi
));
1040 obi
.di_mode
= dp
->di_mode
;
1041 obi
.di_uid
= dp
->di_uid
;
1042 obi
.di_gid
= dp
->di_gid
;
1043 obi
.di_qsize
.v
= dir_size
; /* (u_quad_t)dp->di_size; */
1044 obi
.di_atime
= dp
->di_atime
;
1045 obi
.di_mtime
= dp
->di_mtime
;
1046 obi
.di_ctime
= dp
->di_ctime
;
1047 obi
.di_nlink
= dp
->di_nlink
;
1048 obi
.di_blocks
= dp
->di_blocks
;
1049 obi
.di_flags
= dp
->di_flags
;
1050 obi
.di_gen
= dp
->di_gen
;
1051 memmove(&obi
.di_db
, &dp
->di_db
, (NDADDR
+ NIADDR
) * sizeof(daddr_t
));
1052 if (dp
->di_file_acl
)
1053 warn("ACLs in inode #%ld won't be dumped", (long)ino
);
1054 memmove(&spcl
.c_dinode
, &obi
, sizeof(obi
));
1055 #else /* __linux__ */
1056 spcl
.c_dinode
= *dp
;
1057 #endif /* __linux__ */
1058 spcl
.c_type
= TS_INODE
;
1060 switch (dp
->di_mode
& S_IFMT
) {
1071 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1076 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1077 dp
->di_mode
& IFMT
, ino
);
1080 for (size
= 0; size
< dir_size
; size
+= TP_BSIZE
) {
1084 memmove(buf
, cdc
.buf
+ size
, TP_BSIZE
);
1086 spcl
.c_type
= TS_ADDR
;
1089 (void)free(cdc
.buf
);
1091 #endif /* __linux__ */
1095 * Read indirect blocks, and pass the data blocks to be dumped.
1098 dmpindir(dump_ino_t ino
, daddr_t blk
, int ind_level
, fsizeT
*size
)
1105 daddr_t idblk
[MAXNINDIR
];
1108 bread(fsbtodb(sblock
, blk
), (char *)idblk
, (int) sblock
->fs_bsize
);
1111 * My RedHat 4.0 system doesn't have these flags; I haven't
1112 * upgraded e2fsprogs yet
1114 #if defined(EXT2_FLAG_SWAP_BYTES)
1115 if ((fs
->flags
& EXT2_FLAG_SWAP_BYTES
) ||
1116 (fs
->flags
& EXT2_FLAG_SWAP_BYTES_READ
))
1119 max
= sblock
->fs_bsize
>> 2;
1120 swapme
= (blk_t
*) idblk
;
1121 for (i
= 0; i
< max
; i
++, swapme
++)
1122 *swapme
= ext2fs_swab32(*swapme
);
1124 #endif /* __linux__ */
1126 memset(idblk
, 0, (int)sblock
->fs_bsize
);
1127 if (ind_level
<= 0) {
1128 if (*size
< NINDIR(sblock
) * sblock
->fs_bsize
)
1129 cnt
= howmany(*size
, sblock
->fs_fsize
);
1132 cnt
= NINDIR(sblock
) * EXT2_FRAGS_PER_BLOCK(fs
->super
);
1134 cnt
= NINDIR(sblock
) * sblock
->fs_frag
;
1136 *size
-= NINDIR(sblock
) * sblock
->fs_bsize
;
1137 blksout(&idblk
[0], cnt
, ino
);
1141 for (i
= 0; i
< NINDIR(sblock
); i
++) {
1142 dmpindir(ino
, idblk
[i
], ind_level
, size
);
1150 * Collect up the data into tape record sized buffers and output them.
1153 blksout(daddr_t
*blkp
, int frags
, dump_ino_t ino
)
1155 register daddr_t
*bp
;
1156 int i
, j
, count
, blks
, tbperdb
;
1158 blks
= howmany(frags
* sblock
->fs_fsize
, TP_BSIZE
);
1159 tbperdb
= sblock
->fs_bsize
>> tp_bshift
;
1160 for (i
= 0; i
< blks
; i
+= TP_NINDIR
) {
1161 if (i
+ TP_NINDIR
> blks
)
1164 count
= i
+ TP_NINDIR
;
1165 for (j
= i
; j
< count
; j
++)
1166 if (blkp
[j
/ tbperdb
] != 0)
1167 spcl
.c_addr
[j
- i
] = 1;
1169 spcl
.c_addr
[j
- i
] = 0;
1170 spcl
.c_count
= count
- i
;
1172 bp
= &blkp
[i
/ tbperdb
];
1173 for (j
= i
; j
< count
; j
+= tbperdb
, bp
++) {
1175 if (j
+ tbperdb
<= count
)
1176 dumpblock(*bp
, (int)sblock
->fs_bsize
);
1178 dumpblock(*bp
, (count
- j
) * TP_BSIZE
);
1181 spcl
.c_type
= TS_ADDR
;
1186 * Dump a map to the tape.
1189 dumpmap(char *map
, int type
, dump_ino_t ino
)
1195 spcl
.c_count
= howmany(mapsize
* sizeof(char), TP_BSIZE
);
1197 for (i
= 0, cp
= map
; i
< spcl
.c_count
; i
++, cp
+= TP_BSIZE
)
1202 * Write a header record to the dump tape.
1204 #if defined __linux__ && !defined(int32_t)
1205 #define int32_t __s32
1208 writeheader(dump_ino_t ino
)
1210 register int32_t sum
, cnt
, *lp
;
1212 spcl
.c_inumber
= ino
;
1213 spcl
.c_magic
= NFS_MAGIC
;
1214 spcl
.c_checksum
= 0;
1215 lp
= (int32_t *)&spcl
;
1217 cnt
= sizeof(union u_spcl
) / (4 * sizeof(int32_t));
1218 while (--cnt
>= 0) {
1224 spcl
.c_checksum
= CHECKSUM
- sum
;
1225 writerec((char *)&spcl
, 1);
1230 getino(dump_ino_t inum
)
1232 static struct dinode dinode
;
1236 err
= ext2fs_read_inode(fs
, (ext2_ino_t
)inum
, (struct ext2_inode
*) &dinode
);
1238 com_err(disk
, err
, "while reading inode #%ld\n", (long)inum
);
1243 #else /* __linux__ */
1245 getino(dump_ino_t inum
)
1247 static daddr_t minino
, maxino
;
1248 static struct dinode inoblock
[MAXINOPB
];
1251 if (inum
>= minino
&& inum
< maxino
)
1252 return (&inoblock
[inum
- minino
]);
1253 bread(fsbtodb(sblock
, ino_to_fsba(sblock
, inum
)), (char *)inoblock
,
1254 (int)sblock
->fs_bsize
);
1255 minino
= inum
- (inum
% INOPB(sblock
));
1256 maxino
= minino
+ INOPB(sblock
);
1257 return (&inoblock
[inum
- minino
]);
1259 #endif /* __linux__ */
1262 * Read a chunk of data from the disk.
1263 * Try to recover from hard errors by reading in sector sized pieces.
1264 * Error recovery is attempted at most BREADEMAX times before seeking
1265 * consent from the operator to continue.
1267 int breaderrors
= 0;
1268 #define BREADEMAX 32
1271 bread(daddr_t blkno
, char *buf
, int size
)
1278 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1279 (((ext2_loff_t
)blkno
) << dev_bshift
))
1281 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1282 ((off_t
)blkno
<< dev_bshift
))
1284 msg("bread: lseek fails\n");
1285 if ((cnt
= read(diskfd
, buf
, size
)) == size
)
1287 if (blkno
+ (size
/ dev_bsize
) > fsbtodb(sblock
, sblock
->fs_size
)) {
1289 * Trying to read the final fragment.
1291 * NB - dump only works in TP_BSIZE blocks, hence
1292 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1293 * It should be smarter about not actually trying to
1294 * read more than it can get, but for the time being
1295 * we punt and scale back the read only when it gets
1296 * us into trouble. (mkm 9/25/83)
1302 msg("read error from %s: %s: [block %d]: count=%d\n",
1303 disk
, strerror(errno
), blkno
, size
);
1305 msg("short read error from %s: [block %d]: count=%d, got=%d\n",
1306 disk
, blkno
, size
, cnt
);
1307 if (++breaderrors
> BREADEMAX
) {
1308 msg("More than %d block read errors from %d\n",
1310 broadcast("DUMP IS AILING!\n");
1311 msg("This is an unrecoverable error.\n");
1312 if (!query("Do you want to attempt to continue?")){
1319 * Zero buffer, then try to read each sector of buffer separately.
1321 memset(buf
, 0, size
);
1322 for (i
= 0; i
< size
; i
+= dev_bsize
, buf
+= dev_bsize
, blkno
++) {
1324 if (ext2fs_llseek(diskfd
, (((ext2_loff_t
)blkno
) << dev_bshift
), 0) !=
1325 (((ext2_loff_t
)blkno
) << dev_bshift
))
1327 if (lseek(diskfd
, ((off_t
)blkno
<< dev_bshift
), 0) !=
1328 ((off_t
)blkno
<< dev_bshift
))
1330 msg("bread: lseek2 fails!\n");
1331 if ((cnt
= read(diskfd
, buf
, (int)dev_bsize
)) == dev_bsize
)
1334 msg("read error from %s: %s: [sector %d]: count=%d\n",
1335 disk
, strerror(errno
), blkno
, dev_bsize
);
1338 msg("short read error from %s: [sector %d]: count=%d, got=%d\n",
1339 disk
, blkno
, dev_bsize
, cnt
);