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 1.52 2002/12/09 10:53:59 stelian Exp $";
50 #include <sys/types.h>
57 #include <sys/param.h>
60 #ifdef HAVE_EXT2FS_EXT2_FS_H
61 #include <ext2fs/ext2_fs.h>
63 #include <linux/ext2_fs.h>
65 #include <ext2fs/ext2fs.h>
66 #include <bsdcompat.h>
67 #include <compaterr.h>
70 #include <sys/vnode.h>
73 #include <ufs/fsdir.h>
74 #include <ufs/inode.h>
76 #include <ufs/ufs/dir.h>
77 #include <ufs/ufs/dinode.h>
78 #include <ufs/ffs/fs.h>
79 #endif /* __linux__ */
81 #include <protocols/dumprestore.h>
85 #define HASDUMPEDFILE 0x1
86 #define HASSUBDIRS 0x2
89 typedef u_quad_t fsizeT;
92 typedef quad_t fsizeT;
99 static int searchdir __P((struct ext2_dir_entry *dp, int offset,
100 int blocksize, char *buf, void *private));
102 static int dirindir __P((dump_ino_t ino, daddr_t blkno, int level, long *size));
103 static void dmpindir __P((dump_ino_t ino, daddr_t blk, int level, fsizeT *size));
104 static int searchdir __P((dump_ino_t ino, daddr_t blkno, long size, long filesize));
106 static void mapfileino __P((dump_ino_t ino, struct dinode const *dp, long *tapesize, int *dirskipped));
108 #ifdef HAVE_EXT2_JOURNAL_INUM
109 #define ext2_journal_ino(sb) (sb->s_journal_inum)
111 #define ext2_journal_ino(sb) (*((u_int32_t *)sb + 0x38))
113 #ifndef HAVE_EXT2_INO_T
114 typedef ino_t ext2_ino_t;
117 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
118 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
120 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
121 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
123 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
124 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
126 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
127 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
130 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
131 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
132 EXT2_FEATURE_INCOMPAT_FILETYPE)
134 #ifndef EXT2_RESIZE_INO
135 #define EXT2_RESIZE_INO 7
138 int dump_fs_open(const char *disk, ext2_filsys *fs)
142 retval = ext2fs_open(disk, EXT2_FLAG_FORCE, 0, 0, unix_io_manager, fs);
144 struct ext2_super_block *es = (*fs)->super;
145 dump_ino_t journal_ino = ext2_journal_ino(es);
147 if (es->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV){
148 msg("This is a journal, not a filesystem!\n");
149 retval = EXT2_ET_UNSUPP_FEATURE;
152 else if ((retval = es->s_feature_incompat &
153 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP |
154 EXT3_FEATURE_INCOMPAT_RECOVER))) {
155 msg("Unsupported feature(s) 0x%x in filesystem\n",
157 retval = EXT2_ET_UNSUPP_FEATURE;
161 if (es->s_feature_compat &
162 EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
164 do_exclude_ino(journal_ino, "journal inode");
165 do_exclude_ino(EXT2_RESIZE_INO, "resize inode");
172 * This is an estimation of the number of TP_BSIZE blocks in the file.
173 * It estimates the number of blocks in files with holes by assuming
174 * that all of the blocks accounted for by di_blocks are data blocks
175 * (when some of the blocks are usually used for indirect pointers);
176 * hence the estimate may be high.
179 blockest(struct dinode const *dp)
181 long blkest, sizeest;
185 * dp->di_size is the size of the file in bytes.
186 * dp->di_blocks stores the number of sectors actually in the file.
187 * If there are more sectors than the size would indicate, this just
188 * means that there are indirect blocks in the file or unused
189 * sectors in the last file block; we can safely ignore these
190 * (blkest = sizeest below).
191 * If the file is bigger than the number of sectors would indicate,
192 * then the file has holes in it. In this case we must use the
193 * block count to estimate the number of data blocks used, but
194 * we use the actual size for estimating the number of indirect
195 * dump blocks (sizeest vs. blkest in the indirect block
198 blkest = howmany((u_quad_t)dp->di_blocks * 512, TP_BSIZE);
199 i_size = dp->di_size + ((u_quad_t) dp->di_size_high << 32);
200 sizeest = howmany(i_size, TP_BSIZE);
201 if (blkest > sizeest)
204 if (i_size > (u_quad_t)fs->blocksize * NDADDR) {
205 /* calculate the number of indirect blocks on the dump tape */
207 howmany(sizeest - NDADDR * fs->blocksize / TP_BSIZE,
208 NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super));
211 if (i_size > sblock->fs_bsize * NDADDR) {
212 /* calculate the number of indirect blocks on the dump tape */
214 howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE,
221 /* Auxiliary macro to pick up files changed since previous dump. */
222 #define CSINCE(dp, t) \
223 ((dp)->di_ctime >= (t))
224 #define MSINCE(dp, t) \
225 ((dp)->di_mtime >= (t))
226 #define CHANGEDSINCE(dp, t) \
227 (CSINCE(dp, t) || MSINCE(dp, t))
229 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
231 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
233 #define NODUMP_FLAG(dp) 0
236 /* The WANTTODUMP macro decides whether a file should be dumped. */
237 #define WANTTODUMP(dp, ino) \
238 (CHANGEDSINCE(dp, ((u_int32_t)spcl.c_ddate)) && \
239 (!NODUMP_FLAG(dp)) && \
243 * Determine if given inode should be dumped. "dp" must either point to a
244 * copy of the given inode, or be NULL (in which case it is fetched.)
247 mapfileino(dump_ino_t ino, struct dinode const *dp, long *tapesize, int *dirskipped)
252 * Skip inode if we've already marked it for dumping
254 if (TSTINO(ino, usedinomap))
258 if ((mode = (dp->di_mode & IFMT)) == 0)
261 if (dp->di_nlink == 0 || dp->di_dtime != 0)
265 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
266 * used map. All inode but dirs who have the nodump attribute go
269 SETINO(ino, usedinomap);
272 SETINO(ino, dumpdirmap);
273 if (WANTTODUMP(dp, ino)) {
274 SETINO(ino, dumpinomap);
275 if (!MSINCE(dp, (u_int32_t)spcl.c_ddate))
276 SETINO(ino, metainomap);
277 if (mode != IFREG && mode != IFDIR && mode != IFLNK)
280 *tapesize += blockest(dp);
284 if ( NODUMP_FLAG(dp) || exclude_ino(ino) )
285 CLRINO(ino, usedinomap);
293 * Walk the inode list for a filesystem to find all allocated inodes
294 * that have been modified since the previous dump time. Also, find all
295 * the directories in the filesystem.
299 mapfiles(UNUSED(dump_ino_t maxino), long *tapesize)
302 int anydirskipped = 0;
303 ext2_inode_scan scan;
305 struct ext2_inode inode;
308 * We use libext2fs's inode scanning routines, which are particularly
309 * robust. (Note that getino cannot return an error.)
311 err = ext2fs_open_inode_scan(fs, 0, &scan);
313 com_err(disk, err, "while opening inodes\n");
317 err = ext2fs_get_next_inode(scan, &ino, &inode);
318 if (err == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE)
321 com_err(disk, err, "while scanning inode #%ld\n",
329 mapfileino(ino, (struct dinode const *)&inode, tapesize,
332 ext2fs_close_inode_scan(scan);
335 * Restore gets very upset if the root is not dumped,
336 * so ensure that it always is dumped.
338 SETINO(ROOTINO, dumpinomap);
339 return (anydirskipped);
343 mapfiles(dump_ino_t maxino, long *tapesize)
346 int anydirskipped = 0;
348 for (ino = ROOTINO; ino < maxino; ino++)
349 mapfileino(ino, tapesize, &anydirskipped);
352 * Restore gets very upset if the root is not dumped,
353 * so ensure that it always is dumped.
355 SETINO(ROOTINO, dumpinomap);
356 return (anydirskipped);
358 #endif /* __linux__ */
362 maponefile(UNUSED(dump_ino_t maxino), long *tapesize, char *directory)
366 char dir_name [MAXPATHLEN];
367 int i, anydirskipped = 0;
370 * Mark every directory in the path as being dumped
372 for (i = 0; i < (int)strlen (directory); i++) {
373 if (directory[i] == '/') {
374 strncpy (dir_name, directory, i);
376 retval = ext2fs_namei(fs, ROOTINO, ROOTINO,
379 com_err(disk, retval,
380 "while translating %s", dir_name);
383 mapfileino((dump_ino_t) dir_ino, 0,
384 tapesize, &anydirskipped);
388 * Mark the final directory
390 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, directory, &dir_ino);
392 com_err(disk, retval, "while translating %s", directory);
395 mapfileino((dump_ino_t)dir_ino, 0, tapesize, &anydirskipped);
397 mapfileino(ROOTINO, 0, tapesize, &anydirskipped);
400 * Restore gets very upset if the root is not dumped,
401 * so ensure that it always is dumped.
403 SETINO(ROOTINO, dumpdirmap);
404 return anydirskipped;
406 #endif /* __linux__ */
409 struct mapfile_context {
415 mapfilesindir(struct ext2_dir_entry *dirent, UNUSED(int offset),
416 UNUSED(int blocksize), UNUSED(char *buf), void *private)
418 struct dinode const *dp;
421 struct mapfile_context *mfc;
425 mfc = (struct mapfile_context *)private;
426 dp = getino(dirent->inode);
428 mapfileino(dirent->inode, dp, mfc->tapesize, mfc->anydirskipped);
430 mode = dp->di_mode & IFMT;
431 if (mode == IFDIR && dp->di_nlink != 0 && dp->di_dtime == 0) {
432 if ((dirent->name[0] != '.' || ( dirent->name_len & 0xFF ) != 1) &&
433 (dirent->name[0] != '.' || dirent->name[1] != '.' ||
434 ( dirent->name_len & 0xFF ) != 2)) {
435 retval = ext2fs_dir_iterate(fs, ino, 0, NULL,
436 mapfilesindir, private);
447 * Walk the inode list for a filesystem to find all allocated inodes
448 * that have been modified since the previous dump time. Also, find all
449 * the directories in the filesystem.
452 mapfilesfromdir(UNUSED(dump_ino_t maxino), long *tapesize, char *directory)
455 struct mapfile_context mfc;
457 char dir_name [MAXPATHLEN];
458 int i, anydirskipped = 0;
461 * Mark every directory in the path as being dumped
463 for (i = 0; i < (int)strlen (directory); i++) {
464 if (directory[i] == '/') {
465 strncpy (dir_name, directory, i);
467 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, dir_name,
470 com_err(disk, retval, "while translating %s",
474 mapfileino(dir_ino, 0, tapesize, &anydirskipped);
478 * Mark the final directory
480 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, directory, &dir_ino);
482 com_err(disk, retval, "while translating %s", directory);
485 mapfileino(dir_ino, 0, tapesize, &anydirskipped);
487 mfc.tapesize = tapesize;
488 mfc.anydirskipped = &anydirskipped;
489 retval = ext2fs_dir_iterate(fs, dir_ino, 0, NULL, mapfilesindir,
493 com_err(disk, retval, "while mapping files in %s", directory);
497 * Ensure that the root inode actually appears in the file list
500 mapfileino(ROOTINO, 0, tapesize, &anydirskipped);
502 * Restore gets very upset if the root is not dumped,
503 * so ensure that it always is dumped.
505 SETINO(ROOTINO, dumpinomap);
506 return anydirskipped;
511 struct mapdirs_context {
521 * Scan each directory on the filesystem to see if it has any modified
522 * files in it. If it does, and has not already been added to the dump
523 * list (because it was itself modified), then add it. If a directory
524 * has not been modified itself, contains no modified files and has no
525 * subdirectories, then it can be deleted from the dump list and from
526 * the list of directories. By deleting it from the list of directories,
527 * its parent may now qualify for the same treatment on this or a later
528 * pass using this algorithm.
531 mapdirs(dump_ino_t maxino, long *tapesize)
541 struct mapdirs_context mdc;
543 int ret, change = 0, nodump;
545 isdir = 0; /* XXX just to get gcc to shut up */
546 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
547 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
552 * If dir has been removed from the used map, it's either
553 * because it had the nodump flag, or it herited it from
554 * its parent. A directory can't be in dumpinomap if not
555 * in usedinomap, but we have to go through it anyway
556 * to propagate the nodump attribute.
558 nodump = (TSTINO(ino, usedinomap) == 0);
559 if ((isdir & 1) == 0 ||
560 (TSTINO(ino, dumpinomap) && nodump == 0))
567 mdc.tapesize = tapesize;
568 ext2fs_dir_iterate(fs, ino, 0, NULL, searchdir, (void *) &mdc);
569 #else /* __linux__ */
570 filesize = dp->di_size;
571 for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) {
572 if (dp->di_db[i] != 0)
573 ret |= searchdir(ino, dp->di_db[i],
574 (long)dblksize(sblock, dp, i),
576 if (ret & HASDUMPEDFILE)
579 filesize -= sblock->fs_bsize;
581 for (i = 0; filesize > 0 && i < NIADDR; i++) {
582 if (dp->di_ib[i] == 0)
584 ret |= dirindir(ino, dp->di_ib[i], i, &filesize);
586 #endif /* __linux__ */
587 if (ret & HASDUMPEDFILE) {
588 SETINO(ino, dumpinomap);
589 *tapesize += blockest(dp);
594 if (ret & HASSUBDIRS)
595 change = 1; /* subdirs have inherited nodump */
596 CLRINO(ino, dumpdirmap);
597 } else if ((ret & HASSUBDIRS) == 0) {
598 if (!TSTINO(ino, dumpinomap)) {
599 CLRINO(ino, dumpdirmap);
609 * Read indirect blocks, and pass the data blocks to be searched
610 * as directories. Quit as soon as any entry is found that will
611 * require the directory to be dumped.
614 dirindir(dump_ino_t ino, daddr_t blkno, int ind_level, long *filesize)
618 daddr_t idblk[MAXNINDIR];
620 bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize);
621 if (ind_level <= 0) {
622 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
625 ret |= searchdir(ino, blkno, sblock->fs_bsize,
627 if (ret & HASDUMPEDFILE)
630 *filesize -= sblock->fs_bsize;
635 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
638 ret |= dirindir(ino, blkno, ind_level, filesize);
642 #endif /* !__linux__ */
645 * Scan a disk block containing directory information looking to see if
646 * any of the entries are on the dump list and to see if the directory
647 * contains any subdirectories.
651 searchdir(struct ext2_dir_entry *dp, UNUSED(int offset),
652 UNUSED(int blocksize), UNUSED(char *buf), void *private)
654 struct mapdirs_context *mdc;
659 mdc = (struct mapdirs_context *)private;
661 tapesize = mdc->tapesize;
665 if (dp->name[0] == '.') {
666 if (( dp->name_len & 0xFF ) == 1)
668 if (dp->name[1] == '.' && ( dp->name_len & 0xFF ) == 2)
672 ip = getino(dp->inode);
673 if (TSTINO(dp->inode, dumpinomap)) {
674 CLRINO(dp->inode, dumpinomap);
675 *tapesize -= blockest(ip);
677 /* Add dir back to the dir map and remove from
678 * usedinomap to propagate nodump */
679 if ((ip->di_mode & IFMT) == IFDIR) {
680 SETINO(dp->inode, dumpdirmap);
681 CLRINO(dp->inode, usedinomap);
685 if (TSTINO(dp->inode, dumpinomap)) {
686 *ret |= HASDUMPEDFILE;
687 if (*ret & HASSUBDIRS)
690 if (TSTINO(dp->inode, dumpdirmap)) {
692 if (*ret & HASDUMPEDFILE)
699 #else /* __linux__ */
702 searchdir(dump_ino_t ino, daddr_t blkno, long size, long filesize)
708 bread(fsbtodb(sblock, blkno), dblk, (int)size);
711 for (loc = 0; loc < size; ) {
712 dp = (struct direct *)(dblk + loc);
713 if (dp->d_reclen == 0) {
714 msg("corrupted directory, inumber %d\n", ino);
720 if (dp->d_name[0] == '.') {
721 if (dp->d_name[1] == '\0')
723 if (dp->d_name[1] == '.' && dp->d_name[2] == '\0')
726 if (TSTINO(dp->d_ino, dumpinomap)) {
727 ret |= HASDUMPEDFILE;
728 if (ret & HASSUBDIRS)
731 if (TSTINO(dp->d_ino, dumpdirmap)) {
733 if (ret & HASDUMPEDFILE)
739 #endif /* __linux__ */
743 struct block_context {
752 * Dump a block to the tape
755 dumponeblock(UNUSED(ext2_filsys fs), blk_t *blocknr, e2_blkcnt_t blockcnt,
756 UNUSED(blk_t ref_block), UNUSED(int ref_offset), void * private)
758 struct block_context *p;
761 if (blockcnt < NDADDR)
763 p = (struct block_context *)private;
764 for (i = p->next_block; i < blockcnt; i++) {
765 p->buf[p->cnt++] = 0;
766 if (p->cnt == p->max) {
767 blksout (p->buf, p->cnt, p->ino);
771 p->buf[p->cnt++] = *blocknr;
772 if (p->cnt == p->max) {
773 blksout (p->buf, p->cnt, p->ino);
776 p->next_block = blockcnt + 1;
782 * Dump passes 3 and 4.
784 * Dump the contents of an inode to tape.
787 dumpino(struct dinode *dp, dump_ino_t ino, int metaonly)
790 fsizeT size, remaining;
792 struct new_bsd_inode nbi;
795 struct block_context bc;
804 i_size = dp->di_size + ((u_quad_t) dp->di_size_high << 32);
808 dumpmap(dumpinomap, TS_BITS, ino);
810 CLRINO(ino, dumpinomap);
812 memset(&nbi, 0, sizeof(nbi));
813 nbi.di_mode = dp->di_mode;
814 nbi.di_nlink = dp->di_nlink;
815 nbi.di_ouid = dp->di_uid;
816 nbi.di_ogid = dp->di_gid;
817 nbi.di_size = i_size;
818 nbi.di_atime.tv_sec = dp->di_atime;
819 nbi.di_mtime.tv_sec = dp->di_mtime;
820 nbi.di_ctime.tv_sec = dp->di_ctime;
821 memmove(&nbi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
822 nbi.di_flags = dp->di_flags;
823 nbi.di_blocks = dp->di_blocks;
824 nbi.di_gen = dp->di_gen;
825 nbi.di_uid = (((int32_t)dp->di_uidhigh) << 16) | dp->di_uid;
826 nbi.di_gid = (((int32_t)dp->di_gidhigh) << 16) | dp->di_gid;
828 msg("ACLs in inode #%ld won't be dumped\n", (long)ino);
829 memmove(&spcl.c_dinode, &nbi, sizeof(nbi));
830 #else /* __linux__ */
832 #endif /* __linux__ */
833 spcl.c_type = TS_INODE;
836 if (metaonly && (dp->di_mode & S_IFMT)) {
837 spcl.c_flags |= DR_METAONLY;
840 spcl.c_flags &= ~DR_METAONLY;
844 switch (dp->di_mode & S_IFMT) {
854 msg("Warning: dumpino called on a directory (ino %d)\n", ino);
860 * Check for short symbolic link.
864 i_size < EXT2_N_BLOCKS * sizeof (daddr_t)) {
868 memmove(buf, dp->di_db, (u_long)dp->di_size);
869 buf[dp->di_size] = '\0';
873 #endif /* __linux__ */
875 if (dp->di_size > 0 &&
876 dp->di_size < sblock->fs_maxsymlinklen) {
880 memmove(buf, dp->di_shortlink, (u_long)dp->di_size);
881 buf[dp->di_size] = '\0';
904 msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT);
907 if (i_size > (u_quad_t)NDADDR * sblock->fs_bsize)
909 cnt = NDADDR * EXT2_FRAGS_PER_BLOCK(fs->super);
911 cnt = NDADDR * sblock->fs_frag;
914 cnt = howmany(i_size, sblock->fs_fsize);
915 blksout(&dp->di_db[0], cnt, ino);
916 if ((quad_t) (size = i_size - NDADDR * sblock->fs_bsize) <= 0)
919 bc.max = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
920 bc.buf = (int *)malloc (bc.max * sizeof (int));
923 bc.next_block = NDADDR;
925 ext2fs_block_iterate2(fs, (ext2_ino_t)ino, 0, NULL, dumponeblock, (void *)&bc);
926 /* deal with holes at the end of the inode */
927 if (i_size > ((u_quad_t)bc.next_block) * sblock->fs_fsize) {
928 remaining = i_size - ((u_quad_t)bc.next_block) * sblock->fs_fsize;
929 for (i = 0; i < (int)howmany(remaining, sblock->fs_fsize); i++) {
930 bc.buf[bc.cnt++] = 0;
931 if (bc.cnt == bc.max) {
932 blksout (bc.buf, bc.cnt, bc.ino);
938 blksout (bc.buf, bc.cnt, bc.ino);
942 for (ind_level = 0; ind_level < NIADDR; ind_level++) {
943 dmpindir(ino, dp->di_ib[ind_level], ind_level, &size);
952 struct convert_dir_context {
960 * This function converts an ext2fs directory entry to the BSD format.
962 * Basically, it adds a null-character at the end of the name, recomputes the
963 * size of the entry, and creates it in a temporary buffer
966 convert_dir(struct ext2_dir_entry *dirent, UNUSED(int offset),
967 UNUSED(int blocksize), UNUSED(char *buf), void *private)
969 struct convert_dir_context *p;
973 p = (struct convert_dir_context *)private;
975 reclen = EXT2_DIR_REC_LEN((dirent->name_len & 0xFF) + 1);
976 if (((p->offset + reclen - 1) / p->bs) != (p->offset / p->bs)) {
977 dp = (struct direct *)(p->buf + p->prev_offset);
978 dp->d_reclen += p->bs - (p->offset % p->bs);
979 p->offset += p->bs - (p->offset % p->bs);
982 dp = (struct direct *)(p->buf + p->offset);
983 dp->d_ino = dirent->inode;
984 dp->d_reclen = reclen;
985 dp->d_namlen = dirent->name_len & 0xFF;
986 switch ((dirent->name_len & 0xFF00) >> 8) {
988 dp->d_type = DT_UNKNOWN;
990 case EXT2_FT_REG_FILE:
1000 dp->d_type = DT_BLK;
1003 dp->d_type = DT_FIFO;
1006 dp->d_type = DT_SOCK;
1008 case EXT2_FT_SYMLINK:
1009 dp->d_type = DT_LNK;
1012 strncpy(dp->d_name, dirent->name, dp->d_namlen);
1013 dp->d_name[dp->d_namlen] = '\0';
1014 p->prev_offset = p->offset;
1015 p->offset += reclen;
1023 * Dumps a directory to tape after converting it to the BSD format
1026 dumpdirino(struct dinode *dp, dump_ino_t ino)
1030 struct new_bsd_inode nbi;
1031 struct convert_dir_context cdc;
1033 struct ext2_dir_entry *de;
1038 dumpmap(dumpinomap, TS_BITS, ino);
1040 CLRINO(ino, dumpinomap);
1043 * Convert the directory to the BSD format
1045 /* Allocate a buffer for the conversion (twice the size of the
1046 ext2fs directory to avoid problems ;-) */
1047 cdc.buf = (char *)malloc(dp->di_size * 2 * sizeof(char));
1048 if (cdc.buf == NULL)
1049 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1050 (unsigned long)ino);
1052 cdc.prev_offset = 0;
1053 cdc.bs = MIN(DIRBLKSIZ, TP_BSIZE);
1054 /* Do the conversion */
1055 retval = ext2fs_dir_iterate(fs, (ext2_ino_t)ino, 0, NULL, convert_dir, (void *)&cdc);
1057 com_err(disk, retval, "while converting directory #%ld\n", (long)ino);
1060 /* Fix the last entry */
1061 if ((cdc.offset % cdc.bs) != 0) {
1062 de = (struct ext2_dir_entry *)(cdc.buf + cdc.prev_offset);
1063 de->rec_len += cdc.bs - (cdc.offset % cdc.bs);
1064 cdc.offset += cdc.bs - (cdc.offset % cdc.bs);
1067 dir_size = cdc.offset;
1070 memset(&nbi, 0, sizeof(nbi));
1071 nbi.di_mode = dp->di_mode;
1072 nbi.di_nlink = dp->di_nlink;
1073 nbi.di_ouid = dp->di_uid;
1074 nbi.di_ogid = dp->di_gid;
1075 nbi.di_size = dir_size; /* (u_quad_t)dp->di_size; */
1076 nbi.di_atime.tv_sec = dp->di_atime;
1077 nbi.di_mtime.tv_sec = dp->di_mtime;
1078 nbi.di_ctime.tv_sec = dp->di_ctime;
1079 memmove(&nbi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
1080 nbi.di_flags = dp->di_flags;
1081 nbi.di_blocks = dp->di_blocks;
1082 nbi.di_gen = dp->di_gen;
1083 nbi.di_uid = (((int32_t)dp->di_uidhigh) << 16) | dp->di_uid;
1084 nbi.di_gid = (((int32_t)dp->di_gidhigh) << 16) | dp->di_gid;
1085 if (dp->di_file_acl)
1086 msg("ACLs in inode #%ld won't be dumped\n", (long)ino);
1087 memmove(&spcl.c_dinode, &nbi, sizeof(nbi));
1088 #else /* __linux__ */
1089 spcl.c_dinode = *dp;
1090 #endif /* __linux__ */
1091 spcl.c_type = TS_INODE;
1093 switch (dp->di_mode & S_IFMT) {
1104 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1109 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1110 dp->di_mode & IFMT, ino);
1113 for (size = 0; size < dir_size; size += TP_BSIZE) {
1117 memmove(buf, cdc.buf + size, TP_BSIZE);
1119 spcl.c_type = TS_ADDR;
1122 (void)free(cdc.buf);
1124 #endif /* __linux__ */
1128 * Read indirect blocks, and pass the data blocks to be dumped.
1131 dmpindir(dump_ino_t ino, daddr_t blk, int ind_level, fsizeT *size)
1138 daddr_t idblk[MAXNINDIR];
1141 bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize);
1144 * My RedHat 4.0 system doesn't have these flags; I haven't
1145 * upgraded e2fsprogs yet
1147 #if defined(EXT2_FLAG_SWAP_BYTES)
1148 if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
1149 (fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
1152 max = sblock->fs_bsize >> 2;
1153 swapme = (blk_t *) idblk;
1154 for (i = 0; i < max; i++, swapme++)
1155 *swapme = ext2fs_swab32(*swapme);
1157 #endif /* __linux__ */
1159 memset(idblk, 0, (int)sblock->fs_bsize);
1160 if (ind_level <= 0) {
1161 if (*size < NINDIR(sblock) * sblock->fs_bsize)
1162 cnt = howmany(*size, sblock->fs_fsize);
1165 cnt = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
1167 cnt = NINDIR(sblock) * sblock->fs_frag;
1169 *size -= NINDIR(sblock) * sblock->fs_bsize;
1170 blksout(&idblk[0], cnt, ino);
1174 for (i = 0; i < NINDIR(sblock); i++) {
1175 dmpindir(ino, idblk[i], ind_level, size);
1183 * Collect up the data into tape record sized buffers and output them.
1186 blksout(daddr_t *blkp, int frags, dump_ino_t ino)
1189 int i, j, count, blks, tbperdb;
1191 blks = howmany(frags * sblock->fs_fsize, TP_BSIZE);
1192 tbperdb = sblock->fs_bsize >> tp_bshift;
1193 for (i = 0; i < blks; i += TP_NINDIR) {
1194 if (i + TP_NINDIR > blks)
1197 count = i + TP_NINDIR;
1198 for (j = i; j < count; j++)
1199 if (blkp[j / tbperdb] != 0)
1200 spcl.c_addr[j - i] = 1;
1202 spcl.c_addr[j - i] = 0;
1203 spcl.c_count = count - i;
1205 bp = &blkp[i / tbperdb];
1206 for (j = i; j < count; j += tbperdb, bp++) {
1208 if (j + tbperdb <= count)
1209 dumpblock(*bp, (int)sblock->fs_bsize);
1211 dumpblock(*bp, (count - j) * TP_BSIZE);
1214 spcl.c_type = TS_ADDR;
1219 * Dump a map to the tape.
1222 dumpmap(char *map, int type, dump_ino_t ino)
1228 spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE);
1230 for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE)
1234 #if defined __linux__ && !defined(int32_t)
1235 #define int32_t __s32
1239 * Compute and fill in checksum information.
1242 mkchecksum(union u_spcl *tmpspcl)
1244 int32_t sum, cnt, *lp;
1246 tmpspcl->s_spcl.c_checksum = 0;
1247 lp = (int32_t *)&tmpspcl->s_spcl;
1249 cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t));
1250 while (--cnt >= 0) {
1256 tmpspcl->s_spcl.c_checksum = CHECKSUM - sum;
1260 * Write a header record to the dump tape.
1263 writeheader(dump_ino_t ino)
1265 spcl.c_inumber = ino;
1266 spcl.c_magic = NFS_MAGIC;
1267 mkchecksum((union u_spcl *)&spcl);
1268 writerec((char *)&spcl, 1);
1273 getino(dump_ino_t inum)
1275 static struct dinode dinode;
1279 err = ext2fs_read_inode(fs, (ext2_ino_t)inum, (struct ext2_inode *) &dinode);
1281 com_err(disk, err, "while reading inode #%ld\n", (long)inum);
1286 #else /* __linux__ */
1288 getino(dump_ino_t inum)
1290 static daddr_t minino, maxino;
1291 static struct dinode inoblock[MAXINOPB];
1294 if (inum >= minino && inum < maxino)
1295 return (&inoblock[inum - minino]);
1296 bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock,
1297 (int)sblock->fs_bsize);
1298 minino = inum - (inum % INOPB(sblock));
1299 maxino = minino + INOPB(sblock);
1300 return (&inoblock[inum - minino]);
1302 #endif /* __linux__ */
1305 * Read a chunk of data from the disk.
1306 * Try to recover from hard errors by reading in sector sized pieces.
1307 * Error recovery is attempted at most breademax times before seeking
1308 * consent from the operator to continue.
1310 int breaderrors = 0;
1313 bread(daddr_t blkno, char *buf, int size)
1319 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1320 (((ext2_loff_t)blkno) << dev_bshift))
1322 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1323 ((off_t)blkno << dev_bshift))
1325 msg("bread: lseek fails\n");
1326 if ((cnt = read(diskfd, buf, size)) == size)
1328 if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) {
1330 * Trying to read the final fragment.
1332 * NB - dump only works in TP_BSIZE blocks, hence
1333 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1334 * It should be smarter about not actually trying to
1335 * read more than it can get, but for the time being
1336 * we punt and scale back the read only when it gets
1337 * us into trouble. (mkm 9/25/83)
1343 msg("read error from %s: %s: [block %d, ext2blk %d]: count=%d\n",
1344 disk, strerror(errno), blkno,
1345 dbtofsb(sblock, blkno), size);
1347 msg("short read error from %s: [block %d, ext2blk %d]: count=%d, got=%d\n",
1348 disk, blkno, dbtofsb(sblock, blkno), size, cnt);
1349 if (++breaderrors > breademax) {
1350 msg("More than %d block read errors from %d\n",
1352 broadcast("DUMP IS AILING!\n");
1353 msg("This is an unrecoverable error.\n");
1354 if (!query("Do you want to attempt to continue?")){
1361 * Zero buffer, then try to read each sector of buffer separately.
1363 memset(buf, 0, size);
1364 for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) {
1366 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1367 (((ext2_loff_t)blkno) << dev_bshift))
1369 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1370 ((off_t)blkno << dev_bshift))
1372 msg("bread: lseek2 fails!\n");
1373 if ((cnt = read(diskfd, buf, (int)dev_bsize)) == dev_bsize)
1376 msg("read error from %s: %s: [sector %d, ext2blk %d]: count=%d\n",
1377 disk, strerror(errno), blkno,
1378 dbtofsb(sblock, blkno), dev_bsize);
1381 msg("short read error from %s: [sector %d, ext2blk %d]: count=%d, got=%d\n",
1382 disk, blkno, dbtofsb(sblock, blkno), dev_bsize, cnt);