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. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static const char rcsid[] =
40 "$Id: traverse.c,v 1.55 2003/03/30 15:40:37 stelian Exp $";
46 #include <sys/types.h>
53 #include <sys/param.h>
56 #ifdef HAVE_EXT2FS_EXT2_FS_H
57 #include <ext2fs/ext2_fs.h>
59 #include <linux/ext2_fs.h>
61 #include <ext2fs/ext2fs.h>
62 #include <bsdcompat.h>
63 #include <compaterr.h>
66 #include <sys/vnode.h>
69 #include <ufs/fsdir.h>
70 #include <ufs/inode.h>
72 #include <ufs/ufs/dir.h>
73 #include <ufs/ufs/dinode.h>
74 #include <ufs/ffs/fs.h>
75 #endif /* __linux__ */
77 #include <protocols/dumprestore.h>
81 #define HASDUMPEDFILE 0x1
82 #define HASSUBDIRS 0x2
85 typedef u_quad_t fsizeT;
88 typedef quad_t fsizeT;
95 static int searchdir __P((struct ext2_dir_entry *dp, int offset,
96 int blocksize, char *buf, void *private));
98 static int dirindir __P((dump_ino_t ino, daddr_t blkno, int level, long *size));
99 static void dmpindir __P((dump_ino_t ino, daddr_t blk, int level, fsizeT *size));
100 static int searchdir __P((dump_ino_t ino, daddr_t blkno, long size, long filesize));
102 static void mapfileino __P((dump_ino_t ino, struct dinode const *dp, long *tapesize, int *dirskipped));
104 #ifdef HAVE_EXT2_JOURNAL_INUM
105 #define ext2_journal_ino(sb) (sb->s_journal_inum)
107 #define ext2_journal_ino(sb) (*((u_int32_t *)sb + 0x38))
109 #ifndef HAVE_EXT2_INO_T
110 typedef ino_t ext2_ino_t;
113 #ifndef EXT3_FEATURE_COMPAT_HAS_JOURNAL
114 #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
116 #ifndef EXT2_FEATURE_INCOMPAT_FILETYPE
117 #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
119 #ifndef EXT3_FEATURE_INCOMPAT_RECOVER
120 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
122 #ifndef EXT3_FEATURE_INCOMPAT_JOURNAL_DEV
123 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
126 #ifndef EXT2_LIB_FEATURE_INCOMPAT_SUPP
127 #define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT3_FEATURE_INCOMPAT_RECOVER | \
128 EXT2_FEATURE_INCOMPAT_FILETYPE)
130 #ifndef EXT2_RESIZE_INO
131 #define EXT2_RESIZE_INO 7
133 #ifndef EXT2_FT_UNKNOWN
134 #define EXT2_FT_UNKNOWN 0
135 #define EXT2_FT_REG_FILE 1
136 #define EXT2_FT_DIR 2
137 #define EXT2_FT_CHRDEV 3
138 #define EXT2_FT_BLKDEV 4
139 #define EXT2_FT_FIFO 5
140 #define EXT2_FT_SOCK 6
141 #define EXT2_FT_SYMLINK 7
142 #define EXT2_FT_MAX 8
145 int dump_fs_open(const char *disk, ext2_filsys *fs)
149 retval = ext2fs_open(disk, EXT2_FLAG_FORCE, 0, 0, unix_io_manager, fs);
151 struct ext2_super_block *es = (*fs)->super;
152 dump_ino_t journal_ino = ext2_journal_ino(es);
154 if (es->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV){
155 msg("This is a journal, not a filesystem!\n");
156 retval = EXT2_ET_UNSUPP_FEATURE;
159 else if ((retval = es->s_feature_incompat &
160 ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP |
161 EXT3_FEATURE_INCOMPAT_RECOVER))) {
162 msg("Unsupported feature(s) 0x%x in filesystem\n",
164 retval = EXT2_ET_UNSUPP_FEATURE;
168 if (es->s_feature_compat &
169 EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
171 do_exclude_ino(journal_ino, "journal inode");
172 do_exclude_ino(EXT2_RESIZE_INO, "resize inode");
179 * This is an estimation of the number of TP_BSIZE blocks in the file.
180 * It estimates the number of blocks in files with holes by assuming
181 * that all of the blocks accounted for by di_blocks are data blocks
182 * (when some of the blocks are usually used for indirect pointers);
183 * hence the estimate may be high.
186 blockest(struct dinode const *dp)
188 long blkest, sizeest;
192 * dp->di_size is the size of the file in bytes.
193 * dp->di_blocks stores the number of sectors actually in the file.
194 * If there are more sectors than the size would indicate, this just
195 * means that there are indirect blocks in the file or unused
196 * sectors in the last file block; we can safely ignore these
197 * (blkest = sizeest below).
198 * If the file is bigger than the number of sectors would indicate,
199 * then the file has holes in it. In this case we must use the
200 * block count to estimate the number of data blocks used, but
201 * we use the actual size for estimating the number of indirect
202 * dump blocks (sizeest vs. blkest in the indirect block
205 blkest = howmany((u_quad_t)dp->di_blocks * 512, TP_BSIZE);
206 i_size = dp->di_size + ((u_quad_t) dp->di_size_high << 32);
207 sizeest = howmany(i_size, TP_BSIZE);
208 if (blkest > sizeest)
211 if (i_size > (u_quad_t)fs->blocksize * NDADDR) {
212 /* calculate the number of indirect blocks on the dump tape */
214 howmany(sizeest - NDADDR * fs->blocksize / TP_BSIZE,
215 NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super));
218 if (i_size > sblock->fs_bsize * NDADDR) {
219 /* calculate the number of indirect blocks on the dump tape */
221 howmany(sizeest - NDADDR * sblock->fs_bsize / TP_BSIZE,
228 /* Auxiliary macro to pick up files changed since previous dump. */
229 #define CSINCE(dp, t) \
230 ((dp)->di_ctime >= (t))
231 #define MSINCE(dp, t) \
232 ((dp)->di_mtime >= (t))
233 #define CHANGEDSINCE(dp, t) \
234 (CSINCE(dp, t) || MSINCE(dp, t))
236 /* The NODUMP_FLAG macro tests if a file has the nodump flag. */
238 #define NODUMP_FLAG(dp) (!nonodump && (((dp)->di_flags & UF_NODUMP) == UF_NODUMP))
240 #define NODUMP_FLAG(dp) 0
243 /* The WANTTODUMP macro decides whether a file should be dumped. */
244 #define WANTTODUMP(dp, ino) \
245 (CHANGEDSINCE(dp, ((u_int32_t)spcl.c_ddate)) && \
246 (!NODUMP_FLAG(dp)) && \
250 * Determine if given inode should be dumped. "dp" must either point to a
251 * copy of the given inode, or be NULL (in which case it is fetched.)
254 mapfileino(dump_ino_t ino, struct dinode const *dp, long *tapesize, int *dirskipped)
259 * Skip inode if we've already marked it for dumping
261 if (TSTINO(ino, usedinomap))
265 if ((mode = (dp->di_mode & IFMT)) == 0)
268 if (dp->di_nlink == 0 || dp->di_dtime != 0)
272 * Put all dirs in dumpdirmap, inodes that are to be dumped in the
273 * used map. All inode but dirs who have the nodump attribute go
276 SETINO(ino, usedinomap);
279 SETINO(ino, dumpdirmap);
280 if (WANTTODUMP(dp, ino)) {
281 SETINO(ino, dumpinomap);
282 if (!MSINCE(dp, (u_int32_t)spcl.c_ddate))
283 SETINO(ino, metainomap);
284 if (mode != IFREG && mode != IFDIR && mode != IFLNK)
287 *tapesize += blockest(dp);
291 if ( NODUMP_FLAG(dp) || exclude_ino(ino) )
292 CLRINO(ino, usedinomap);
300 * Walk the inode list for a filesystem to find all allocated inodes
301 * that have been modified since the previous dump time. Also, find all
302 * the directories in the filesystem.
306 mapfiles(UNUSED(dump_ino_t maxino), long *tapesize)
309 int anydirskipped = 0;
310 ext2_inode_scan scan;
312 struct ext2_inode inode;
315 * We use libext2fs's inode scanning routines, which are particularly
316 * robust. (Note that getino cannot return an error.)
318 err = ext2fs_open_inode_scan(fs, 0, &scan);
320 com_err(disk, err, "while opening inodes\n");
324 err = ext2fs_get_next_inode(scan, &ino, &inode);
325 if (err == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE)
328 com_err(disk, err, "while scanning inode #%ld\n",
336 mapfileino(ino, (struct dinode const *)&inode, tapesize,
339 ext2fs_close_inode_scan(scan);
342 * Restore gets very upset if the root is not dumped,
343 * so ensure that it always is dumped.
345 SETINO(ROOTINO, dumpinomap);
346 return (anydirskipped);
350 mapfiles(dump_ino_t maxino, long *tapesize)
353 int anydirskipped = 0;
355 for (ino = ROOTINO; ino < maxino; ino++)
356 mapfileino(ino, tapesize, &anydirskipped);
359 * Restore gets very upset if the root is not dumped,
360 * so ensure that it always is dumped.
362 SETINO(ROOTINO, dumpinomap);
363 return (anydirskipped);
365 #endif /* __linux__ */
369 maponefile(UNUSED(dump_ino_t maxino), long *tapesize, char *directory)
373 char dir_name [MAXPATHLEN];
374 int i, anydirskipped = 0;
377 * Mark every directory in the path as being dumped
379 for (i = 0; i < (int)strlen (directory); i++) {
380 if (directory[i] == '/') {
381 strncpy (dir_name, directory, i);
383 retval = ext2fs_namei(fs, ROOTINO, ROOTINO,
386 com_err(disk, retval,
387 "while translating %s", dir_name);
390 mapfileino((dump_ino_t) dir_ino, 0,
391 tapesize, &anydirskipped);
395 * Mark the final directory
397 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, directory, &dir_ino);
399 com_err(disk, retval, "while translating %s", directory);
402 mapfileino((dump_ino_t)dir_ino, 0, tapesize, &anydirskipped);
404 mapfileino(ROOTINO, 0, tapesize, &anydirskipped);
407 * Restore gets very upset if the root is not dumped,
408 * so ensure that it always is dumped.
410 SETINO(ROOTINO, dumpdirmap);
411 return anydirskipped;
413 #endif /* __linux__ */
416 struct mapfile_context {
422 mapfilesindir(struct ext2_dir_entry *dirent, UNUSED(int offset),
423 UNUSED(int blocksize), UNUSED(char *buf), void *private)
425 struct dinode const *dp;
428 struct mapfile_context *mfc;
432 mfc = (struct mapfile_context *)private;
433 dp = getino(dirent->inode);
435 mapfileino(dirent->inode, dp, mfc->tapesize, mfc->anydirskipped);
437 mode = dp->di_mode & IFMT;
438 if (mode == IFDIR && dp->di_nlink != 0 && dp->di_dtime == 0) {
439 if ((dirent->name[0] != '.' || ( dirent->name_len & 0xFF ) != 1) &&
440 (dirent->name[0] != '.' || dirent->name[1] != '.' ||
441 ( dirent->name_len & 0xFF ) != 2)) {
442 retval = ext2fs_dir_iterate(fs, ino, 0, NULL,
443 mapfilesindir, private);
454 * Walk the inode list for a filesystem to find all allocated inodes
455 * that have been modified since the previous dump time. Also, find all
456 * the directories in the filesystem.
459 mapfilesfromdir(UNUSED(dump_ino_t maxino), long *tapesize, char *directory)
462 struct mapfile_context mfc;
464 char dir_name [MAXPATHLEN];
465 int i, anydirskipped = 0;
468 * Mark every directory in the path as being dumped
470 for (i = 0; i < (int)strlen (directory); i++) {
471 if (directory[i] == '/') {
472 strncpy (dir_name, directory, i);
474 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, dir_name,
477 com_err(disk, retval, "while translating %s",
481 mapfileino(dir_ino, 0, tapesize, &anydirskipped);
485 * Mark the final directory
487 retval = ext2fs_namei(fs, ROOTINO, ROOTINO, directory, &dir_ino);
489 com_err(disk, retval, "while translating %s", directory);
492 mapfileino(dir_ino, 0, tapesize, &anydirskipped);
494 mfc.tapesize = tapesize;
495 mfc.anydirskipped = &anydirskipped;
496 retval = ext2fs_dir_iterate(fs, dir_ino, 0, NULL, mapfilesindir,
500 com_err(disk, retval, "while mapping files in %s", directory);
504 * Ensure that the root inode actually appears in the file list
507 mapfileino(ROOTINO, 0, tapesize, &anydirskipped);
509 * Restore gets very upset if the root is not dumped,
510 * so ensure that it always is dumped.
512 SETINO(ROOTINO, dumpinomap);
513 return anydirskipped;
518 struct mapdirs_context {
528 * Scan each directory on the filesystem to see if it has any modified
529 * files in it. If it does, and has not already been added to the dump
530 * list (because it was itself modified), then add it. If a directory
531 * has not been modified itself, contains no modified files and has no
532 * subdirectories, then it can be deleted from the dump list and from
533 * the list of directories. By deleting it from the list of directories,
534 * its parent may now qualify for the same treatment on this or a later
535 * pass using this algorithm.
538 mapdirs(dump_ino_t maxino, long *tapesize)
548 struct mapdirs_context mdc;
550 int ret, change = 0, nodump;
552 isdir = 0; /* XXX just to get gcc to shut up */
553 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
554 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
559 * If dir has been removed from the used map, it's either
560 * because it had the nodump flag, or it herited it from
561 * its parent. A directory can't be in dumpinomap if not
562 * in usedinomap, but we have to go through it anyway
563 * to propagate the nodump attribute.
565 nodump = (TSTINO(ino, usedinomap) == 0);
566 if ((isdir & 1) == 0 ||
567 (TSTINO(ino, dumpinomap) && nodump == 0))
574 mdc.tapesize = tapesize;
575 ext2fs_dir_iterate(fs, ino, 0, NULL, searchdir, (void *) &mdc);
576 #else /* __linux__ */
577 filesize = dp->di_size;
578 for (ret = 0, i = 0; filesize > 0 && i < NDADDR; i++) {
579 if (dp->di_db[i] != 0)
580 ret |= searchdir(ino, dp->di_db[i],
581 (long)dblksize(sblock, dp, i),
583 if (ret & HASDUMPEDFILE)
586 filesize -= sblock->fs_bsize;
588 for (i = 0; filesize > 0 && i < NIADDR; i++) {
589 if (dp->di_ib[i] == 0)
591 ret |= dirindir(ino, dp->di_ib[i], i, &filesize);
593 #endif /* __linux__ */
594 if (ret & HASDUMPEDFILE) {
595 SETINO(ino, dumpinomap);
596 *tapesize += blockest(dp);
601 if (ret & HASSUBDIRS)
602 change = 1; /* subdirs have inherited nodump */
603 CLRINO(ino, dumpdirmap);
604 } else if ((ret & HASSUBDIRS) == 0) {
605 if (!TSTINO(ino, dumpinomap)) {
606 CLRINO(ino, dumpdirmap);
616 * Read indirect blocks, and pass the data blocks to be searched
617 * as directories. Quit as soon as any entry is found that will
618 * require the directory to be dumped.
621 dirindir(dump_ino_t ino, daddr_t blkno, int ind_level, long *filesize)
625 daddr_t idblk[MAXNINDIR];
627 bread(fsbtodb(sblock, blkno), (char *)idblk, (int)sblock->fs_bsize);
628 if (ind_level <= 0) {
629 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
632 ret |= searchdir(ino, blkno, sblock->fs_bsize,
634 if (ret & HASDUMPEDFILE)
637 *filesize -= sblock->fs_bsize;
642 for (i = 0; *filesize > 0 && i < NINDIR(sblock); i++) {
645 ret |= dirindir(ino, blkno, ind_level, filesize);
649 #endif /* !__linux__ */
652 * Scan a disk block containing directory information looking to see if
653 * any of the entries are on the dump list and to see if the directory
654 * contains any subdirectories.
658 searchdir(struct ext2_dir_entry *dp, UNUSED(int offset),
659 UNUSED(int blocksize), UNUSED(char *buf), void *private)
661 struct mapdirs_context *mdc;
666 mdc = (struct mapdirs_context *)private;
668 tapesize = mdc->tapesize;
672 if (dp->name[0] == '.') {
673 if (( dp->name_len & 0xFF ) == 1)
675 if (dp->name[1] == '.' && ( dp->name_len & 0xFF ) == 2)
679 ip = getino(dp->inode);
680 if (TSTINO(dp->inode, dumpinomap)) {
681 CLRINO(dp->inode, dumpinomap);
682 *tapesize -= blockest(ip);
684 /* Add dir back to the dir map and remove from
685 * usedinomap to propagate nodump */
686 if ((ip->di_mode & IFMT) == IFDIR) {
687 SETINO(dp->inode, dumpdirmap);
688 CLRINO(dp->inode, usedinomap);
692 if (TSTINO(dp->inode, dumpinomap)) {
693 *ret |= HASDUMPEDFILE;
694 if (*ret & HASSUBDIRS)
697 if (TSTINO(dp->inode, dumpdirmap)) {
699 if (*ret & HASDUMPEDFILE)
706 #else /* __linux__ */
709 searchdir(dump_ino_t ino, daddr_t blkno, long size, long filesize)
715 bread(fsbtodb(sblock, blkno), dblk, (int)size);
718 for (loc = 0; loc < size; ) {
719 dp = (struct direct *)(dblk + loc);
720 if (dp->d_reclen == 0) {
721 msg("corrupted directory, inumber %d\n", ino);
727 if (dp->d_name[0] == '.') {
728 if (dp->d_name[1] == '\0')
730 if (dp->d_name[1] == '.' && dp->d_name[2] == '\0')
733 if (TSTINO(dp->d_ino, dumpinomap)) {
734 ret |= HASDUMPEDFILE;
735 if (ret & HASSUBDIRS)
738 if (TSTINO(dp->d_ino, dumpdirmap)) {
740 if (ret & HASDUMPEDFILE)
746 #endif /* __linux__ */
750 struct block_context {
759 * Dump a block to the tape
762 dumponeblock(UNUSED(ext2_filsys fs), blk_t *blocknr, e2_blkcnt_t blockcnt,
763 UNUSED(blk_t ref_block), UNUSED(int ref_offset), void * private)
765 struct block_context *p;
768 if (blockcnt < NDADDR)
770 p = (struct block_context *)private;
771 for (i = p->next_block; i < blockcnt; i++) {
772 p->buf[p->cnt++] = 0;
773 if (p->cnt == p->max) {
774 blksout (p->buf, p->cnt, p->ino);
778 p->buf[p->cnt++] = *blocknr;
779 if (p->cnt == p->max) {
780 blksout (p->buf, p->cnt, p->ino);
783 p->next_block = blockcnt + 1;
789 * Dump passes 3 and 4.
791 * Dump the contents of an inode to tape.
794 dumpino(struct dinode *dp, dump_ino_t ino, int metaonly)
797 fsizeT size, remaining;
799 struct new_bsd_inode nbi;
802 struct block_context bc;
811 i_size = dp->di_size + ((u_quad_t) dp->di_size_high << 32);
815 dumpmap(dumpinomap, TS_BITS, ino);
817 CLRINO(ino, dumpinomap);
819 memset(&nbi, 0, sizeof(nbi));
820 nbi.di_mode = dp->di_mode;
821 nbi.di_nlink = dp->di_nlink;
822 nbi.di_ouid = dp->di_uid;
823 nbi.di_ogid = dp->di_gid;
824 nbi.di_size = i_size;
825 nbi.di_atime.tv_sec = dp->di_atime;
826 nbi.di_mtime.tv_sec = dp->di_mtime;
827 nbi.di_ctime.tv_sec = dp->di_ctime;
828 memmove(&nbi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
829 nbi.di_flags = dp->di_flags;
830 nbi.di_blocks = dp->di_blocks;
831 nbi.di_gen = dp->di_gen;
832 nbi.di_uid = (((int32_t)dp->di_uidhigh) << 16) | dp->di_uid;
833 nbi.di_gid = (((int32_t)dp->di_gidhigh) << 16) | dp->di_gid;
835 msg("ACLs in inode #%ld won't be dumped\n", (long)ino);
836 memmove(&spcl.c_dinode, &nbi, sizeof(nbi));
837 #else /* __linux__ */
839 #endif /* __linux__ */
840 spcl.c_type = TS_INODE;
843 if (metaonly && (dp->di_mode & S_IFMT)) {
844 spcl.c_flags |= DR_METAONLY;
847 spcl.c_flags &= ~DR_METAONLY;
851 switch (dp->di_mode & S_IFMT) {
861 msg("Warning: dumpino called on a directory (ino %d)\n", ino);
867 * Check for short symbolic link.
871 i_size < EXT2_N_BLOCKS * sizeof (daddr_t)) {
875 memmove(buf, dp->di_db, (u_long)dp->di_size);
876 buf[dp->di_size] = '\0';
880 #endif /* __linux__ */
882 if (dp->di_size > 0 &&
883 dp->di_size < sblock->fs_maxsymlinklen) {
887 memmove(buf, dp->di_shortlink, (u_long)dp->di_size);
888 buf[dp->di_size] = '\0';
911 msg("Warning: undefined file type 0%o\n", dp->di_mode & IFMT);
914 if (i_size > (u_quad_t)NDADDR * sblock->fs_bsize)
916 cnt = NDADDR * EXT2_FRAGS_PER_BLOCK(fs->super);
918 cnt = NDADDR * sblock->fs_frag;
921 cnt = howmany(i_size, sblock->fs_fsize);
922 blksout(&dp->di_db[0], cnt, ino);
923 if ((quad_t) (size = i_size - NDADDR * sblock->fs_bsize) <= 0)
926 bc.max = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
927 bc.buf = (int *)malloc (bc.max * sizeof (int));
930 bc.next_block = NDADDR;
932 ext2fs_block_iterate2(fs, (ext2_ino_t)ino, 0, NULL, dumponeblock, (void *)&bc);
933 /* deal with holes at the end of the inode */
934 if (i_size > ((u_quad_t)bc.next_block) * sblock->fs_fsize) {
935 remaining = i_size - ((u_quad_t)bc.next_block) * sblock->fs_fsize;
936 for (i = 0; i < (int)howmany(remaining, sblock->fs_fsize); i++) {
937 bc.buf[bc.cnt++] = 0;
938 if (bc.cnt == bc.max) {
939 blksout (bc.buf, bc.cnt, bc.ino);
945 blksout (bc.buf, bc.cnt, bc.ino);
949 for (ind_level = 0; ind_level < NIADDR; ind_level++) {
950 dmpindir(ino, dp->di_ib[ind_level], ind_level, &size);
959 struct convert_dir_context {
967 * This function converts an ext2fs directory entry to the BSD format.
969 * Basically, it adds a null-character at the end of the name, recomputes the
970 * size of the entry, and creates it in a temporary buffer
973 convert_dir(struct ext2_dir_entry *dirent, UNUSED(int offset),
974 UNUSED(int blocksize), UNUSED(char *buf), void *private)
976 struct convert_dir_context *p;
980 p = (struct convert_dir_context *)private;
982 reclen = EXT2_DIR_REC_LEN((dirent->name_len & 0xFF) + 1);
983 if (((p->offset + reclen - 1) / p->bs) != (p->offset / p->bs)) {
984 dp = (struct direct *)(p->buf + p->prev_offset);
985 dp->d_reclen += p->bs - (p->offset % p->bs);
986 p->offset += p->bs - (p->offset % p->bs);
989 dp = (struct direct *)(p->buf + p->offset);
990 dp->d_ino = dirent->inode;
991 dp->d_reclen = reclen;
992 dp->d_namlen = dirent->name_len & 0xFF;
993 switch ((dirent->name_len & 0xFF00) >> 8) {
995 dp->d_type = DT_UNKNOWN;
997 case EXT2_FT_REG_FILE:
1001 dp->d_type = DT_DIR;
1003 case EXT2_FT_CHRDEV:
1004 dp->d_type = DT_CHR;
1006 case EXT2_FT_BLKDEV:
1007 dp->d_type = DT_BLK;
1010 dp->d_type = DT_FIFO;
1013 dp->d_type = DT_SOCK;
1015 case EXT2_FT_SYMLINK:
1016 dp->d_type = DT_LNK;
1019 strncpy(dp->d_name, dirent->name, dp->d_namlen);
1020 dp->d_name[dp->d_namlen] = '\0';
1021 p->prev_offset = p->offset;
1022 p->offset += reclen;
1030 * Dumps a directory to tape after converting it to the BSD format
1033 dumpdirino(struct dinode *dp, dump_ino_t ino)
1037 struct new_bsd_inode nbi;
1038 struct convert_dir_context cdc;
1040 struct ext2_dir_entry *de;
1045 dumpmap(dumpinomap, TS_BITS, ino);
1047 CLRINO(ino, dumpinomap);
1050 * Convert the directory to the BSD format
1052 /* Allocate a buffer for the conversion (twice the size of the
1053 ext2fs directory to avoid problems ;-) */
1054 cdc.buf = (char *)malloc(dp->di_size * 2 * sizeof(char));
1055 if (cdc.buf == NULL)
1056 err(1, "Cannot allocate buffer to convert directory #%lu\n",
1057 (unsigned long)ino);
1059 cdc.prev_offset = 0;
1060 cdc.bs = MIN(DIRBLKSIZ, TP_BSIZE);
1061 /* Do the conversion */
1062 retval = ext2fs_dir_iterate(fs, (ext2_ino_t)ino, 0, NULL, convert_dir, (void *)&cdc);
1064 com_err(disk, retval, "while converting directory #%ld\n", (long)ino);
1067 /* Fix the last entry */
1068 if ((cdc.offset % cdc.bs) != 0) {
1069 de = (struct ext2_dir_entry *)(cdc.buf + cdc.prev_offset);
1070 de->rec_len += cdc.bs - (cdc.offset % cdc.bs);
1071 cdc.offset += cdc.bs - (cdc.offset % cdc.bs);
1074 dir_size = cdc.offset;
1077 memset(&nbi, 0, sizeof(nbi));
1078 nbi.di_mode = dp->di_mode;
1079 nbi.di_nlink = dp->di_nlink;
1080 nbi.di_ouid = dp->di_uid;
1081 nbi.di_ogid = dp->di_gid;
1082 nbi.di_size = dir_size; /* (u_quad_t)dp->di_size; */
1083 nbi.di_atime.tv_sec = dp->di_atime;
1084 nbi.di_mtime.tv_sec = dp->di_mtime;
1085 nbi.di_ctime.tv_sec = dp->di_ctime;
1086 memmove(&nbi.di_db, &dp->di_db, (NDADDR + NIADDR) * sizeof(daddr_t));
1087 nbi.di_flags = dp->di_flags;
1088 nbi.di_blocks = dp->di_blocks;
1089 nbi.di_gen = dp->di_gen;
1090 nbi.di_uid = (((int32_t)dp->di_uidhigh) << 16) | dp->di_uid;
1091 nbi.di_gid = (((int32_t)dp->di_gidhigh) << 16) | dp->di_gid;
1092 if (dp->di_file_acl)
1093 msg("ACLs in inode #%ld won't be dumped\n", (long)ino);
1094 memmove(&spcl.c_dinode, &nbi, sizeof(nbi));
1095 #else /* __linux__ */
1096 spcl.c_dinode = *dp;
1097 #endif /* __linux__ */
1098 spcl.c_type = TS_INODE;
1100 switch (dp->di_mode & S_IFMT) {
1111 msg("Warning: size of directory inode #%d is <= 0 (%d)!\n",
1116 msg("Warning: dumpdirino called with file type 0%o (inode #%d)\n",
1117 dp->di_mode & IFMT, ino);
1120 for (size = 0; size < dir_size; size += TP_BSIZE) {
1124 memmove(buf, cdc.buf + size, TP_BSIZE);
1126 spcl.c_type = TS_ADDR;
1129 (void)free(cdc.buf);
1131 #endif /* __linux__ */
1135 * Read indirect blocks, and pass the data blocks to be dumped.
1138 dmpindir(dump_ino_t ino, daddr_t blk, int ind_level, fsizeT *size)
1145 daddr_t idblk[MAXNINDIR];
1148 bread(fsbtodb(sblock, blk), (char *)idblk, (int) sblock->fs_bsize);
1151 * My RedHat 4.0 system doesn't have these flags; I haven't
1152 * upgraded e2fsprogs yet
1154 #if defined(EXT2_FLAG_SWAP_BYTES)
1155 if ((fs->flags & EXT2_FLAG_SWAP_BYTES) ||
1156 (fs->flags & EXT2_FLAG_SWAP_BYTES_READ))
1159 max = sblock->fs_bsize >> 2;
1160 swapme = (blk_t *) idblk;
1161 for (i = 0; i < max; i++, swapme++)
1162 *swapme = ext2fs_swab32(*swapme);
1164 #endif /* __linux__ */
1166 memset(idblk, 0, (int)sblock->fs_bsize);
1167 if (ind_level <= 0) {
1168 if (*size < NINDIR(sblock) * sblock->fs_bsize)
1169 cnt = howmany(*size, sblock->fs_fsize);
1172 cnt = NINDIR(sblock) * EXT2_FRAGS_PER_BLOCK(fs->super);
1174 cnt = NINDIR(sblock) * sblock->fs_frag;
1176 *size -= NINDIR(sblock) * sblock->fs_bsize;
1177 blksout(&idblk[0], cnt, ino);
1181 for (i = 0; i < NINDIR(sblock); i++) {
1182 dmpindir(ino, idblk[i], ind_level, size);
1190 * Collect up the data into tape record sized buffers and output them.
1193 blksout(daddr_t *blkp, int frags, dump_ino_t ino)
1196 int i, j, count, blks, tbperdb;
1198 blks = howmany(frags * sblock->fs_fsize, TP_BSIZE);
1199 tbperdb = sblock->fs_bsize >> tp_bshift;
1200 for (i = 0; i < blks; i += TP_NINDIR) {
1201 if (i + TP_NINDIR > blks)
1204 count = i + TP_NINDIR;
1205 for (j = i; j < count; j++)
1206 if (blkp[j / tbperdb] != 0)
1207 spcl.c_addr[j - i] = 1;
1209 spcl.c_addr[j - i] = 0;
1210 spcl.c_count = count - i;
1212 bp = &blkp[i / tbperdb];
1213 for (j = i; j < count; j += tbperdb, bp++) {
1215 if (j + tbperdb <= count)
1216 dumpblock(*bp, (int)sblock->fs_bsize);
1218 dumpblock(*bp, (count - j) * TP_BSIZE);
1221 spcl.c_type = TS_ADDR;
1226 * Dump a map to the tape.
1229 dumpmap(char *map, int type, dump_ino_t ino)
1235 spcl.c_count = howmany(mapsize * sizeof(char), TP_BSIZE);
1237 for (i = 0, cp = map; i < spcl.c_count; i++, cp += TP_BSIZE)
1241 #if defined __linux__ && !defined(int32_t)
1242 #define int32_t __s32
1246 * Compute and fill in checksum information.
1249 mkchecksum(union u_spcl *tmpspcl)
1251 int32_t sum, cnt, *lp;
1253 tmpspcl->s_spcl.c_checksum = 0;
1254 lp = (int32_t *)&tmpspcl->s_spcl;
1256 cnt = sizeof(union u_spcl) / (4 * sizeof(int32_t));
1257 while (--cnt >= 0) {
1263 tmpspcl->s_spcl.c_checksum = CHECKSUM - sum;
1267 * Write a header record to the dump tape.
1270 writeheader(dump_ino_t ino)
1272 spcl.c_inumber = ino;
1273 spcl.c_magic = NFS_MAGIC;
1274 mkchecksum((union u_spcl *)&spcl);
1275 writerec((char *)&spcl, 1);
1280 getino(dump_ino_t inum)
1282 static struct dinode dinode;
1286 err = ext2fs_read_inode(fs, (ext2_ino_t)inum, (struct ext2_inode *) &dinode);
1288 com_err(disk, err, "while reading inode #%ld\n", (long)inum);
1293 #else /* __linux__ */
1295 getino(dump_ino_t inum)
1297 static daddr_t minino, maxino;
1298 static struct dinode inoblock[MAXINOPB];
1301 if (inum >= minino && inum < maxino)
1302 return (&inoblock[inum - minino]);
1303 bread(fsbtodb(sblock, ino_to_fsba(sblock, inum)), (char *)inoblock,
1304 (int)sblock->fs_bsize);
1305 minino = inum - (inum % INOPB(sblock));
1306 maxino = minino + INOPB(sblock);
1307 return (&inoblock[inum - minino]);
1309 #endif /* __linux__ */
1312 * Read a chunk of data from the disk.
1313 * Try to recover from hard errors by reading in sector sized pieces.
1314 * Error recovery is attempted at most breademax times before seeking
1315 * consent from the operator to continue.
1317 int breaderrors = 0;
1320 bread(daddr_t blkno, char *buf, int size)
1326 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1327 (((ext2_loff_t)blkno) << dev_bshift))
1329 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1330 ((off_t)blkno << dev_bshift))
1332 msg("bread: lseek fails\n");
1333 if ((cnt = read(diskfd, buf, size)) == size)
1335 if (blkno + (size / dev_bsize) > fsbtodb(sblock, sblock->fs_size)) {
1337 * Trying to read the final fragment.
1339 * NB - dump only works in TP_BSIZE blocks, hence
1340 * rounds `dev_bsize' fragments up to TP_BSIZE pieces.
1341 * It should be smarter about not actually trying to
1342 * read more than it can get, but for the time being
1343 * we punt and scale back the read only when it gets
1344 * us into trouble. (mkm 9/25/83)
1350 msg("read error from %s: %s: [block %d, ext2blk %d]: count=%d\n",
1351 disk, strerror(errno), blkno,
1352 dbtofsb(sblock, blkno), size);
1354 msg("short read error from %s: [block %d, ext2blk %d]: count=%d, got=%d\n",
1355 disk, blkno, dbtofsb(sblock, blkno), size, cnt);
1356 if (breademax && ++breaderrors > breademax) {
1357 msg("More than %d block read errors from %d\n",
1359 broadcast("DUMP IS AILING!\n");
1360 msg("This is an unrecoverable error.\n");
1361 if (!query("Do you want to attempt to continue?")){
1368 * Zero buffer, then try to read each sector of buffer separately.
1370 memset(buf, 0, size);
1371 for (i = 0; i < size; i += dev_bsize, buf += dev_bsize, blkno++) {
1373 if (ext2fs_llseek(diskfd, (((ext2_loff_t)blkno) << dev_bshift), 0) !=
1374 (((ext2_loff_t)blkno) << dev_bshift))
1376 if (lseek(diskfd, ((off_t)blkno << dev_bshift), 0) !=
1377 ((off_t)blkno << dev_bshift))
1379 msg("bread: lseek2 fails!\n");
1380 if ((cnt = read(diskfd, buf, (int)dev_bsize)) == dev_bsize)
1383 msg("read error from %s: %s: [sector %d, ext2blk %d]: count=%d\n",
1384 disk, strerror(errno), blkno,
1385 dbtofsb(sblock, blkno), dev_bsize);
1388 msg("short read error from %s: [sector %d, ext2blk %d]: count=%d, got=%d\n",
1389 disk, blkno, dbtofsb(sblock, blkno), dev_bsize, cnt);