]>
git.wh0rd.org - dump.git/blob - restore/tape.c
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) 1983, 1993
11 * The Regents of the University of California. All rights reserved.
12 * (c) UNIX System Laboratories, Inc.
13 * All or some portions of this file are derived from material licensed
14 * to the University of California by American Telephone and Telegraph
15 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
16 * the permission of UNIX System Laboratories, Inc.
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. All advertising materials mentioning features or use of this software
27 * must display the following acknowledgement:
28 * This product includes software developed by the University of
29 * California, Berkeley and its contributors.
30 * 4. Neither the name of the University nor the names of its contributors
31 * may be used to endorse or promote products derived from this software
32 * without specific prior written permission.
34 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
35 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48 static const char rcsid
[] =
49 "$Id: tape.c,v 1.41 2001/07/18 11:46:31 stelian Exp $";
53 #include <compatlfs.h>
55 #include <compaterr.h>
62 #include <sys/param.h>
70 #ifdef HAVE_EXT2FS_EXT2_FS_H
71 #include <ext2fs/ext2_fs.h>
73 #include <linux/ext2_fs.h>
75 #include <ext2fs/ext2fs.h>
76 #include <bsdcompat.h>
78 #include <ufs/ufs/dinode.h>
79 #endif /* __linux__ */
80 #include <protocols/dumprestore.h>
84 #endif /* HAVE_ZLIB */
88 #include "pathnames.h"
93 static long fssize
= MAXBSIZE
;
95 static int pipein
= 0;
96 static int magtapein
= 0; /* input is from magtape */
97 static char magtape
[MAXPATHLEN
];
98 static char magtapeprefix
[MAXPATHLEN
];
101 static char *tapebuf
; /* input buffer for read */
102 static int bufsize
; /* buffer size without prefix */
103 static char *tbufptr
= NULL
; /* active tape buffer */
105 static char *comprbuf
; /* uncompress work buf */
106 static size_t comprlen
; /* size including prefix */
108 static union u_spcl endoftapemark
;
109 static long blksread
; /* blocks read since last header */
110 static long tpblksread
= 0; /* TP_BSIZE blocks read */
111 static long tapesread
;
112 static sigjmp_buf restart
;
113 static int gettingfile
= 0; /* restart has a valid frame */
114 static char *host
= NULL
;
118 static char lnkbuf
[MAXPATHLEN
+ 1];
121 int oldinofmt
; /* old inode format conversion required */
122 int Bcvt
; /* Swap Bytes (for CCI or sun) */
123 static int Qcvt
; /* Swap quads (for sun) */
125 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
127 static void accthdr
__P((struct s_spcl
*));
128 static int checksum
__P((int *));
129 static void findinode
__P((struct s_spcl
*));
130 static void findtapeblksize
__P((void));
131 static int gethead
__P((struct s_spcl
*));
132 static void readtape
__P((char *));
133 static void setdumpnum
__P((void));
134 static u_int swabi
__P((u_int
));
136 static u_long swabl
__P((u_long
));
138 static u_char
*swab64
__P((u_char
*, int));
139 static u_char
*swab32
__P((u_char
*, int));
140 static u_char
*swab16
__P((u_char
*, int));
141 static void terminateinput
__P((void));
142 static void xtrfile
__P((char *, size_t));
143 static void xtrlnkfile
__P((char *, size_t));
144 static void xtrlnkskip
__P((char *, size_t));
145 static void xtrmap
__P((char *, size_t));
146 static void xtrmapskip
__P((char *, size_t));
147 static void xtrskip
__P((char *, size_t));
148 static void setmagtapein
__P((void));
151 static void newcomprbuf
__P((int));
152 static void readtape_set
__P((char *));
153 static void readtape_uncompr
__P((char *));
154 static void readtape_comprfile
__P((char *));
155 static void readtape_comprtape
__P((char *));
156 static char *decompress_tapebuf
__P((struct tapebuf
*, int));
157 static void msg_read_error
__P((char *));
159 static int read_a_block
__P((int, char *, size_t, long *));
160 #define PREFIXSIZE sizeof(struct tapebuf)
162 #define COMPARE_ONTHEFLY 1
165 static int ifile
; /* input file for compare */
166 static int cmperror
; /* compare error */
167 static void xtrcmpfile
__P((char *, size_t));
168 static void xtrcmpskip
__P((char *, size_t));
171 static int readmapflag
;
174 * Set up an input source. This is called from main.c before setup() is.
177 setinput(char *source
)
183 newtapebuf(NTREC
> HIGHDENSITYTREC
? NTREC
: HIGHDENSITYTREC
);
187 if (strchr(source
, ':')) {
189 source
= strchr(host
, ':');
191 if (rmthost(host
) == 0)
195 if (strcmp(source
, "-") == 0) {
197 * Since input is coming from a pipe we must establish
198 * our own connection to the terminal.
200 terminal
= fopen(_PATH_TTY
, "r");
201 if (terminal
== NULL
) {
202 warn("cannot open %s", _PATH_TTY
);
203 terminal
= fopen(_PATH_DEVNULL
, "r");
204 if (terminal
== NULL
)
205 err(1, "cannot open %s", _PATH_DEVNULL
);
209 setuid(getuid()); /* no longer need or want root privileges */
211 strncpy(magtapeprefix
, source
, MAXPATHLEN
);
212 magtapeprefix
[MAXPATHLEN
-1] = '\0';
213 snprintf(magtape
, MAXPATHLEN
, "%s%03d", source
, 1);
216 strncpy(magtape
, source
, MAXPATHLEN
);
217 magtape
[MAXPATHLEN
- 1] = '\0';
221 newtapebuf(long size
)
223 static int tapebufsize
= -1;
226 bufsize
= ntrec
* TP_BSIZE
;
227 if (size
<= tapebufsize
)
231 tapebuf
= malloc(size
* TP_BSIZE
+ sizeof(struct tapebuf
));
233 errx(1, "Cannot allocate space for tape buffer");
239 newcomprbuf(int size
)
241 size_t buf_size
= (size
+1) * TP_BSIZE
+ sizeof(struct tapebuf
);
242 if (buf_size
<= comprlen
)
245 if (comprbuf
!= NULL
)
247 comprbuf
= malloc(comprlen
);
248 if (comprbuf
== NULL
)
249 errx(1, "Cannot allocate space for decompress buffer");
251 #endif /* HAVE_ZLIB */
254 * Verify that the tape drive can be accessed and
255 * that it actually is a dump tape.
263 Vprintf(stdout
, "Verify tape and initialize maps\n");
266 mt
= rmtopen(magtape
, 0);
272 mt
= OPEN(magtape
, O_RDONLY
, 0);
274 err(1, "%s", magtape
);
280 if (gethead(&spcl
) == FAIL
) {
281 blkcnt
--; /* push back this block */
285 if (gethead(&spcl
) == FAIL
)
286 errx(1, "Tape is not a dump tape");
287 fprintf(stderr
, "Converting to new file system format.\n");
291 fprintf(stderr
, "Dump tape is compressed.\n");
295 errx(1,"This restore version doesn't support decompression");
296 #endif /* HAVE_ZLIB */
299 endoftapemark
.s_spcl
.c_magic
= cvtflag
? OFS_MAGIC
: NFS_MAGIC
;
300 endoftapemark
.s_spcl
.c_type
= TS_END
;
301 ip
= (int *)&endoftapemark
;
302 j
= sizeof(union u_spcl
) / sizeof(int);
307 endoftapemark
.s_spcl
.c_checksum
= CHECKSUM
- i
;
309 if (vflag
|| command
== 't' || command
== 'C')
311 if (filesys
[0] == '\0') {
313 strncpy(filesys
, spcl
.c_filesys
, NAMELEN
);
314 filesys
[NAMELEN
- 1] = '\0';
315 dirptr
= strstr(filesys
, " (dir");
319 dumptime
= spcl
.c_ddate
;
320 dumpdate
= spcl
.c_date
;
321 if (STAT(".", &stbuf
) < 0)
322 err(1, "cannot stat .");
323 if (stbuf
.st_blksize
> 0 && stbuf
.st_blksize
< TP_BSIZE
)
325 if (stbuf
.st_blksize
>= TP_BSIZE
&& stbuf
.st_blksize
<= MAXBSIZE
)
326 fssize
= stbuf
.st_blksize
;
327 if (((fssize
- 1) & fssize
) != 0)
328 errx(1, "bad block size %ld", fssize
);
329 if (spcl
.c_volume
!= 1)
330 errx(1, "Tape is not volume 1 of the dump");
331 if (gethead(&spcl
) == FAIL
) {
332 Dprintf(stdout
, "header read failed at %ld blocks\n", (long)blksread
);
333 panic("no header after volume mark!\n");
336 if (spcl
.c_type
!= TS_CLRI
)
337 errx(1, "Cannot find file removal list");
338 maxino
= (spcl
.c_count
* TP_BSIZE
* NBBY
) + 1;
339 Dprintf(stdout
, "maxino = %ld\n", (long)maxino
);
340 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
342 errx(1, "no memory for active inode map");
344 curfile
.action
= USING
;
345 getfile(xtrmap
, xtrmapskip
);
346 if (spcl
.c_type
!= TS_BITS
)
347 errx(1, "Cannot find file dump list");
348 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
349 if (map
== (char *)NULL
)
350 errx(1, "no memory for file dump list");
352 curfile
.action
= USING
;
353 getfile(xtrmap
, xtrmapskip
);
355 * If there may be whiteout entries on the tape, pretend that the
356 * whiteout inode exists, so that the whiteout entries can be
360 SETINO(WINO
, dumpmap
);
364 * Prompt user to load a new dump volume.
365 * "Nextvol" is the next suggested volume to use.
366 * This suggested volume is enforced when doing full
367 * or incremental restores, but can be overridden by
368 * the user when only extracting a subset of the files.
373 long newvol
= 0, savecnt
= 0, wantnext
= 0, i
;
374 union u_spcl tmpspcl
;
375 # define tmpbuf tmpspcl.s_spcl
385 panic("Changing volumes on pipe input?\n");
393 exit(1); /* pipes do not get a second chance */
394 if (command
== 'R' || command
== 'r' || curfile
.action
!= SKIP
) {
401 while (newvol
<= 0) {
402 if (tapesread
== 0) {
403 fprintf(stderr
, "%s%s%s%s%s",
404 "You have not read any tapes yet.\n",
405 "Unless you know which volume your",
406 " file(s) are on you should start\n",
407 "with the last volume and work",
408 " towards the first.\n");
410 fprintf(stderr
, "You have read volumes");
412 for (i
= 1; i
< 32; i
++)
413 if (tapesread
& (1 << i
)) {
414 fprintf(stderr
, "%s%ld", buf
, (long)i
);
417 fprintf(stderr
, "\n");
420 fprintf(stderr
, "Specify next volume #: ");
421 (void) fflush(stderr
);
422 (void) fgets(buf
, TP_BSIZE
, terminal
);
423 } while (!feof(terminal
) && buf
[0] == '\n');
429 "Volume numbers are positive numerics\n");
432 if (newvol
== volno
) {
433 tapesread
|= 1 << volno
;
438 snprintf(magtape
, MAXPATHLEN
, "%s%03ld", magtapeprefix
, newvol
);
439 magtape
[MAXPATHLEN
- 1] = '\0';
441 if (!Mflag
|| haderror
) {
443 fprintf(stderr
, "Mount tape volume %ld\n", (long)newvol
);
444 fprintf(stderr
, "Enter ``none'' if there are no more tapes\n");
445 fprintf(stderr
, "otherwise enter tape name (default: %s) ", magtape
);
446 (void) fflush(stderr
);
447 (void) fgets(buf
, TP_BSIZE
, terminal
);
450 if (!strcmp(buf
, "none\n")) {
454 if (buf
[0] != '\n') {
456 (void) strncpy(magtape
, buf
, sizeof(magtape
));
457 magtape
[sizeof(magtape
) - 1] = '\0';
458 if ((pos
= strchr(magtape
, '\n')))
459 magtape
[pos
- magtape
] = '\0';
464 mt
= rmtopen(magtape
, 0);
467 mt
= OPEN(magtape
, O_RDONLY
, 0);
470 fprintf(stderr
, "Cannot open %s\n", magtape
);
480 if (gethead(&tmpbuf
) == FAIL
) {
481 Dprintf(stdout
, "header read failed at %ld blocks\n", (long)blksread
);
482 fprintf(stderr
, "tape is not dump tape\n");
487 if (tmpbuf
.c_volume
!= volno
) {
488 fprintf(stderr
, "Wrong volume (%d)\n", tmpbuf
.c_volume
);
493 if (tmpbuf
.c_date
!= dumpdate
|| tmpbuf
.c_ddate
!= dumptime
) {
494 fprintf(stderr
, "Wrong dump date\n\tgot: %s",
495 ctime4(&tmpbuf
.c_date
));
496 fprintf(stderr
, "\twanted: %s", ctime(&dumpdate
));
501 tapesread
|= 1 << volno
;
504 * If continuing from the previous volume, skip over any
505 * blocks read already at the end of the previous volume.
507 * If coming to this volume at random, skip to the beginning
508 * of the next record.
510 Dprintf(stdout
, "read %ld recs, tape starts with %ld\n",
511 tpblksread
, (long)tmpbuf
.c_firstrec
);
512 if (tmpbuf
.c_type
== TS_TAPE
&& (tmpbuf
.c_flags
& DR_NEWHEADER
)) {
514 tpblksread
= tmpbuf
.c_firstrec
;
515 for (i
= tmpbuf
.c_count
; i
> 0; i
--)
517 } else if (tmpbuf
.c_firstrec
> 0 &&
518 tmpbuf
.c_firstrec
< tpblksread
- 1) {
520 * -1 since we've read the volume header
522 i
= tpblksread
- tmpbuf
.c_firstrec
- 1;
523 Dprintf(stderr
, "Skipping %ld duplicate record%s.\n",
524 (long)i
, i
> 1 ? "s" : "");
529 if (curfile
.action
== USING
) {
531 panic("active file into volume 1\n");
535 * Skip up to the beginning of the next record
537 if (tmpbuf
.c_type
== TS_TAPE
&& (tmpbuf
.c_flags
& DR_NEWHEADER
))
538 for (i
= tmpbuf
.c_count
; i
> 0; i
--)
540 (void) gethead(&spcl
);
544 siglongjmp(restart
, 1);
549 * Handle unexpected EOF.
555 if (gettingfile
&& curfile
.action
== USING
) {
556 printf("Warning: %s %s\n",
557 "End-of-input encountered while extracting", curfile
.name
);
559 curfile
.name
= "<name unknown>";
560 curfile
.action
= UNKNOWN
;
562 curfile
.ino
= maxino
;
565 siglongjmp(restart
, 1);
570 * handle multiple dumps per tape by skipping forward to the
578 if (dumpnum
== 1 || volno
!= 1)
581 errx(1, "Cannot have multiple dumps on pipe input");
583 tcom
.mt_count
= dumpnum
- 1;
586 rmtioctl(MTFSF
, dumpnum
- 1);
589 if (ioctl(mt
, (int)MTIOCTOP
, (char *)&tcom
) < 0)
596 fprintf(stdout
, "Dump date: %s", ctime4(&spcl
.c_date
));
597 fprintf(stdout
, "Dumped from: %s",
598 (spcl
.c_ddate
== 0) ? "the epoch\n" : ctime4(&spcl
.c_ddate
));
599 if (spcl
.c_host
[0] == '\0')
601 fprintf(stdout
, "Level %d dump of %s on %s:%s\n",
602 spcl
.c_level
, spcl
.c_filesys
, spcl
.c_host
, spcl
.c_dev
);
603 fprintf(stdout
, "Label: %s\n", spcl
.c_label
);
607 extractfile(char *name
)
611 struct timeval timep
[2];
615 curfile
.action
= USING
;
617 timep
[0].tv_sec
= curfile
.dip
->di_atime
.tv_sec
;
618 timep
[0].tv_usec
= curfile
.dip
->di_atime
.tv_usec
;
619 timep
[1].tv_sec
= curfile
.dip
->di_mtime
.tv_sec
;
620 timep
[1].tv_usec
= curfile
.dip
->di_mtime
.tv_usec
;
621 #else /* __linux__ */
622 timep
[0].tv_sec
= curfile
.dip
->di_atime
;
623 timep
[0].tv_usec
= curfile
.dip
->di_atimensec
/ 1000;
624 timep
[1].tv_sec
= curfile
.dip
->di_mtime
;
625 timep
[1].tv_usec
= curfile
.dip
->di_mtimensec
/ 1000;
626 #endif /* __linux__ */
627 mode
= curfile
.dip
->di_mode
;
628 flags
= curfile
.dip
->di_flags
;
629 switch (mode
& IFMT
) {
632 fprintf(stderr
, "%s: unknown file mode 0%o\n", name
, mode
);
637 Vprintf(stdout
, "skipped socket %s\n", name
);
643 ep
= lookupname(name
);
644 if (ep
== NULL
|| ep
->e_flags
& EXTRACT
)
645 panic("unextracted directory %s\n", name
);
649 Vprintf(stdout
, "extract file %s\n", name
);
650 return (genliteraldir(name
, curfile
.ino
));
655 uid_t luid
= curfile
.dip
->di_uid
;
656 gid_t lgid
= curfile
.dip
->di_gid
;
660 getfile(xtrlnkfile
, xtrlnkskip
);
663 "%s: zero length symbolic link (ignored)\n", name
);
666 if (linkit(lnkbuf
, name
, SYMLINK
) == FAIL
)
669 (void) lchown(name
, luid
, lgid
);
675 Vprintf(stdout
, "extract fifo %s\n", name
);
682 if (mkfifo(name
, mode
) < 0) {
683 warn("%s: cannot create fifo", name
);
687 (void) chown(name
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
688 (void) chmod(name
, mode
);
691 (void) fsetflags(name
, flags
);
693 (void) chflags(name
, flags
);
701 Vprintf(stdout
, "extract special file %s\n", name
);
708 if (mknod(name
, mode
, (int)curfile
.dip
->di_rdev
) < 0) {
709 warn("%s: cannot create special file", name
);
713 (void) chown(name
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
714 (void) chmod(name
, mode
);
718 warn("%s: fsetflags called on a special file", name
);
719 (void) fsetflags(name
, flags
);
722 (void) chflags(name
, flags
);
729 Vprintf(stdout
, "extract file %s\n", name
);
736 if ((ofile
= OPEN(name
, O_WRONLY
| O_CREAT
| O_TRUNC
,
738 warn("%s: cannot create file", name
);
742 (void) fchown(ofile
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
743 (void) fchmod(ofile
, mode
);
746 (void) setflags(ofile
, flags
);
748 (void) fchflags(ofile
, flags
);
750 getfile(xtrfile
, xtrskip
);
759 * skip over bit maps on the tape
765 while (spcl
.c_type
== TS_BITS
|| spcl
.c_type
== TS_CLRI
)
770 * skip over a file on the tape
776 curfile
.action
= SKIP
;
777 getfile(xtrnull
, xtrnull
);
781 * Extract a file from the tape.
782 * When an allocated block is found it is passed to the fill function;
783 * when an unallocated block (hole) is found, a zeroed buffer is passed
784 * to the skip function.
787 getfile(void (*fill
) __P((char *, size_t)), void (*skip
) __P((char *, size_t)))
790 volatile int curblk
= 0;
791 volatile quad_t size
= spcl
.c_dinode
.di_size
;
792 volatile int last_write_was_hole
= 0;
793 quad_t origsize
= size
;
794 static char clearedbuf
[MAXBSIZE
];
795 char buf
[MAXBSIZE
/ TP_BSIZE
][TP_BSIZE
];
798 if (spcl
.c_type
== TS_END
)
799 panic("ran off end of tape\n");
800 if (spcl
.c_magic
!= NFS_MAGIC
)
801 panic("not at beginning of a file\n");
802 if (!gettingfile
&& setjmp(restart
) != 0)
806 for (i
= 0; i
< spcl
.c_count
; i
++) {
807 if (readmapflag
|| spcl
.c_addr
[i
]) {
808 readtape(&buf
[curblk
++][0]);
809 if (curblk
== fssize
/ TP_BSIZE
) {
810 (*fill
)((char *)buf
, (size_t)(size
> TP_BSIZE
?
811 fssize
: (curblk
- 1) * TP_BSIZE
+ size
));
813 last_write_was_hole
= 0;
817 (*fill
)((char *)buf
, (size_t)(size
> TP_BSIZE
?
819 (curblk
- 1) * TP_BSIZE
+ size
));
822 (*skip
)(clearedbuf
, (long)(size
> TP_BSIZE
?
824 last_write_was_hole
= 1;
826 if ((size
-= TP_BSIZE
) <= 0) {
827 for (i
++; i
< spcl
.c_count
; i
++)
828 if (readmapflag
|| spcl
.c_addr
[i
])
833 if (gethead(&spcl
) == GOOD
&& size
> 0) {
834 if (spcl
.c_type
== TS_ADDR
)
837 "Missing address (header) block for %s at %ld blocks\n",
838 curfile
.name
, (long)blksread
);
841 (*fill
)((char *)buf
, (size_t)(curblk
* TP_BSIZE
) + size
);
842 last_write_was_hole
= 0;
845 fprintf(stderr
, "Missing blocks at the end of %s, assuming hole\n", curfile
.name
);
847 size_t skp
= size
> TP_BSIZE
? TP_BSIZE
: size
;
848 (*skip
)(clearedbuf
, skp
);
851 last_write_was_hole
= 1;
853 if (last_write_was_hole
) {
854 FTRUNCATE(ofile
, origsize
);
861 * Write out the next block of a file.
864 xtrfile(char *buf
, size_t size
)
869 if (write(ofile
, buf
, (int) size
) == -1)
870 err(1, "write error extracting inode %lu, name %s\nwrite",
871 (unsigned long)curfile
.ino
, curfile
.name
);
875 * Skip over a hole in a file.
879 xtrskip(char *buf
, size_t size
)
882 if (LSEEK(ofile
, (off_t
)size
, SEEK_CUR
) == -1)
883 err(1, "seek error extracting inode %lu, name %s\nlseek",
884 (unsigned long)curfile
.ino
, curfile
.name
);
888 * Collect the next block of a symbolic link.
891 xtrlnkfile(char *buf
, size_t size
)
895 if (pathlen
> MAXPATHLEN
)
896 errx(1, "symbolic link name: %s->%s%s; too long %d",
897 curfile
.name
, lnkbuf
, buf
, pathlen
);
898 (void) strcat(lnkbuf
, buf
);
902 * Skip over a hole in a symbolic link (should never happen).
906 xtrlnkskip(char *buf
, size_t size
)
909 errx(1, "unallocated block in symbolic link %s", curfile
.name
);
913 * Collect the next block of a bit map.
916 xtrmap(char *buf
, size_t size
)
919 memmove(map
, buf
, size
);
924 * Skip over a hole in a bit map (should never happen).
928 xtrmapskip(char *buf
, size_t size
)
931 panic("hole in map\n");
936 * Noop, when an extraction function is not needed.
940 xtrnull(char *buf
, size_t size
)
948 * Compare the next block of a file.
951 xtrcmpfile(char *buf
, size_t size
)
953 static char cmpbuf
[MAXBSIZE
];
958 if (read(ifile
, cmpbuf
, size
) != size
) {
959 fprintf(stderr
, "%s: size has changed.\n",
965 if (memcmp(buf
, cmpbuf
, size
) != 0) {
966 fprintf(stderr
, "%s: tape and disk copies are different\n",
974 * Skip over a hole in a file.
977 xtrcmpskip(char *buf
, size_t size
)
979 static char cmpbuf
[MAXBSIZE
];
985 if (read(ifile
, cmpbuf
, size
) != size
) {
986 fprintf(stderr
, "%s: size has changed.\n",
992 for (i
= 0; i
< size
; ++i
)
993 if (cmpbuf
[i
] != '\0') {
994 fprintf(stderr
, "%s: tape and disk copies are different\n",
1000 #endif /* COMPARE_ONTHEFLY */
1002 #if !COMPARE_ONTHEFLY
1004 do_cmpfiles(int fd_tape
, int fd_disk
, long size
)
1006 static char buf_tape
[BUFSIZ
];
1007 static char buf_disk
[BUFSIZ
];
1012 if ((n_tape
= read(fd_tape
, buf_tape
, sizeof(buf_tape
))) < 1) {
1013 close(fd_tape
), close(fd_disk
);
1014 panic("do_cmpfiles: unexpected EOF[1]");
1016 if ((n_disk
= read(fd_disk
, buf_disk
, sizeof(buf_tape
))) < 1) {
1017 close(fd_tape
), close(fd_disk
);
1018 panic("do_cmpfiles: unexpected EOF[2]");
1020 if (n_tape
!= n_disk
) {
1021 close(fd_tape
), close(fd_disk
);
1022 panic("do_cmpfiles: sizes different!");
1024 if (memcmp(buf_tape
, buf_disk
, (size_t)n_tape
) != 0) return (1);
1030 /* for debugging compare problems */
1031 #undef COMPARE_FAIL_KEEP_FILE
1034 #ifdef COMPARE_FAIL_KEEP_FILE
1035 /* return true if tapefile should be unlinked after compare */
1040 cmpfiles(char *tapefile
, char *diskfile
, struct STAT
*sbuf_disk
)
1042 struct STAT sbuf_tape
;
1043 int fd_tape
, fd_disk
;
1045 if (STAT(tapefile
, &sbuf_tape
) != 0) {
1046 panic("Can't lstat tmp file %s: %s\n", tapefile
,
1051 if (sbuf_disk
->st_size
!= sbuf_tape
.st_size
) {
1053 "%s: size changed from %ld to %ld.\n",
1054 diskfile
, (long)sbuf_tape
.st_size
, (long)sbuf_disk
->st_size
);
1056 #ifdef COMPARE_FAIL_KEEP_FILE
1063 if ((fd_tape
= OPEN(tapefile
, O_RDONLY
)) < 0) {
1064 panic("Can't open %s: %s\n", tapefile
, strerror(errno
));
1067 if ((fd_disk
= OPEN(diskfile
, O_RDONLY
)) < 0) {
1069 panic("Can't open %s: %s\n", diskfile
, strerror(errno
));
1073 if (do_cmpfiles(fd_tape
, fd_disk
, sbuf_tape
.st_size
)) {
1074 fprintf(stderr
, "%s: tape and disk copies are different\n",
1079 #ifdef COMPARE_FAIL_KEEP_FILE
1080 /* rename the file to live in /tmp */
1081 /* rename `tapefile' to /tmp/<basename of diskfile> */
1083 char *p
= strrchr(diskfile
, '/');
1084 char newname
[MAXPATHLEN
];
1086 panic("can't find / in %s\n", diskfile
);
1088 snprintf(newname
, sizeof(newname
), "%s/debug/%s", tmpdir
, p
+ 1);
1089 if (rename(tapefile
, newname
)) {
1090 panic("rename from %s to %s failed: %s\n",
1094 fprintf(stderr
, "*** %s saved to %s\n",
1099 /* don't unlink the file (it's not there anymore */
1108 #ifdef COMPARE_FAIL_KEEP_FILE
1112 #endif /* !COMPARE_ONTHEFLY */
1114 #if !COMPARE_ONTHEFLY
1115 static char tmpfilename
[MAXPATHLEN
];
1119 comparefile(char *name
)
1124 #if !COMPARE_ONTHEFLY
1125 static char *tmpfile
= NULL
;
1129 if ((r
= LSTAT(name
, &sb
)) != 0) {
1130 warn("%s: does not exist (%d)", name
, r
);
1136 curfile
.name
= name
;
1137 curfile
.action
= USING
;
1138 mode
= curfile
.dip
->di_mode
;
1140 Vprintf(stdout
, "comparing %s (size: %ld, mode: 0%o)\n", name
,
1141 (long)sb
.st_size
, mode
);
1143 if (sb
.st_mode
!= mode
) {
1144 fprintf(stderr
, "%s: mode changed from 0%o to 0%o.\n",
1145 name
, mode
& 07777, sb
.st_mode
& 07777);
1148 switch (mode
& IFMT
) {
1162 char lbuf
[MAXPATHLEN
+ 1];
1165 if (!(sb
.st_mode
& S_IFLNK
)) {
1166 fprintf(stderr
, "%s: is no longer a symbolic link\n",
1173 getfile(xtrlnkfile
, xtrlnkskip
);
1176 "%s: zero length symbolic link (ignored)\n",
1181 if ((lsize
= readlink(name
, lbuf
, MAXPATHLEN
)) < 0) {
1182 panic("readlink of %s failed: %s", name
,
1187 if (strcmp(lbuf
, lnkbuf
) != 0) {
1189 "%s: symbolic link changed from %s to %s.\n",
1190 name
, lnkbuf
, lbuf
);
1199 if (!(sb
.st_mode
& (S_IFCHR
|S_IFBLK
))) {
1200 fprintf(stderr
, "%s: no longer a special file\n",
1207 if (sb
.st_rdev
!= (int)curfile
.dip
->di_rdev
) {
1209 "%s: device changed from %d,%d to %d,%d.\n",
1211 ((int)curfile
.dip
->di_rdev
>> 8) & 0xff,
1212 (int)curfile
.dip
->di_rdev
& 0xff,
1213 ((int)sb
.st_rdev
>> 8) & 0xff,
1214 (int)sb
.st_rdev
& 0xff);
1221 #if COMPARE_ONTHEFLY
1222 if ((ifile
= OPEN(name
, O_RDONLY
)) < 0) {
1223 panic("Can't open %s: %s\n", name
, strerror(errno
));
1229 getfile(xtrcmpfile
, xtrcmpskip
);
1232 if (read(ifile
, &c
, 1) != 0) {
1233 fprintf(stderr
, "%s: size has changed.\n",
1243 if (tmpfile
== NULL
) {
1244 /* argument to mktemp() must not be in RO space: */
1245 snprintf(tmpfilename
, sizeof(tmpfilename
), "%s/restoreCXXXXXX", tmpdir
);
1246 tmpfile
= mktemp(&tmpfilename
[0]);
1248 if ((STAT(tmpfile
, &stemp
) == 0) && (unlink(tmpfile
) != 0)) {
1249 panic("cannot delete tmp file %s: %s\n",
1250 tmpfile
, strerror(errno
));
1252 if ((ofile
= OPEN(tmpfile
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0600)) < 0) {
1253 panic("cannot create file temp file %s: %s\n",
1254 name
, strerror(errno
));
1256 getfile(xtrfile
, xtrskip
);
1257 (void) close(ofile
);
1258 #ifdef COMPARE_FAIL_KEEP_FILE
1259 if (cmpfiles(tmpfile
, name
, &sb
))
1262 cmpfiles(tmpfile
, name
, &sb
);
1265 #endif /* COMPARE_ONTHEFLY */
1272 static void (*readtape_func
)(char *) = readtape_set
;
1275 * Read TP_BSIZE blocks from the input.
1276 * Handle read errors, and end of media.
1277 * Decompress compressed blocks.
1282 (*readtape_func
)(buf
); /* call the actual processing routine */
1286 * Set function pointer for readtape() routine. zflag and magtapein must
1287 * be correctly set before the first call to readtape().
1290 readtape_set(char *buf
)
1293 readtape_func
= readtape_uncompr
;
1297 readtape_func
= readtape_comprtape
;
1299 readtape_func
= readtape_comprfile
;
1304 #endif /* HAVE_ZLIB */
1307 * This is the original readtape(), it's used for reading uncompressed input.
1308 * Read TP_BSIZE blocks from the input.
1309 * Handle read errors, and end of media.
1313 readtape_uncompr(char *buf
)
1318 ssize_t rd
, newvol
, i
;
1319 int cnt
, seek_failed
;
1321 if (blkcnt
< numtrec
) {
1322 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1328 for (i
= 0; i
< ntrec
; i
++)
1329 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1332 cnt
= ntrec
* TP_BSIZE
;
1337 i
= rmtread(&tapebuf
[rd
], cnt
);
1340 i
= read(mt
, &tapebuf
[rd
], cnt
);
1343 * Check for mid-tape short read error.
1344 * If found, skip rest of buffer and start with the next.
1346 if (!pipein
&& numtrec
< ntrec
&& i
> 0) {
1347 Dprintf(stdout
, "mid-media short read error.\n");
1351 * Handle partial block read.
1353 if (pipein
&& i
== 0 && rd
> 0)
1355 else if (i
> 0 && i
!= ntrec
* TP_BSIZE
) {
1364 * Short read. Process the blocks read.
1366 if (i
% TP_BSIZE
!= 0)
1368 "partial block read: %ld should be %ld\n",
1369 (long)i
, ntrec
* TP_BSIZE
);
1370 numtrec
= i
/ TP_BSIZE
;
1374 * Handle read error.
1377 fprintf(stderr
, "Tape read error while ");
1378 switch (curfile
.action
) {
1380 fprintf(stderr
, "trying to set up tape\n");
1383 fprintf(stderr
, "trying to resynchronize\n");
1386 fprintf(stderr
, "restoring %s\n", curfile
.name
);
1389 fprintf(stderr
, "skipping over inode %lu\n",
1390 (unsigned long)curfile
.ino
);
1393 if (!yflag
&& !reply("continue"))
1395 i
= ntrec
* TP_BSIZE
;
1396 memset(tapebuf
, 0, (size_t)i
);
1399 seek_failed
= (rmtseek(i
, 1) < 0);
1402 seek_failed
= (LSEEK(mt
, i
, SEEK_CUR
) == (off_t
)-1);
1405 warn("continuation failed");
1406 if (!yflag
&& !reply("assume end-of-tape and continue"))
1412 * Handle end of tape.
1415 Vprintf(stdout
, "End-of-tape encountered\n");
1424 if (rd
% TP_BSIZE
!= 0)
1425 panic("partial block read: %d should be %d\n",
1426 rd
, ntrec
* TP_BSIZE
);
1428 memmove(&tapebuf
[rd
], &endoftapemark
, TP_BSIZE
);
1431 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1439 * Read a compressed format block from a file or pipe and uncompress it.
1440 * Attempt to handle read errors, and end of file.
1443 readtape_comprfile(char *buf
)
1445 long rl
, size
, i
, ret
;
1447 struct tapebuf
*tpb
;
1449 if (blkcnt
< numtrec
) {
1450 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1455 /* need to read the next block */
1457 for (i
= 0; i
< ntrec
; i
++)
1458 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1460 tpb
= (struct tapebuf
*) tapebuf
;
1462 /* read the block prefix */
1463 ret
= read_a_block(mt
, tapebuf
, PREFIXSIZE
, &rl
);
1469 if (size
> bufsize
) {
1470 /* something's wrong */
1471 Vprintf(stdout
, "Prefix size error, max size %d, got %ld\n",
1474 tpb
->length
= bufsize
;
1476 ret
= read_a_block(mt
, tpb
->buf
, size
, &rl
);
1480 tbufptr
= decompress_tapebuf(tpb
, rl
+ PREFIXSIZE
);
1481 if (tbufptr
== NULL
) {
1482 msg_read_error("File decompression error while");
1483 if (!yflag
&& !reply("continue"))
1485 memset(tapebuf
, 0, bufsize
);
1490 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1496 /* Errors while reading from a file or pipe are catastrophic. Since
1497 * there are no block boundaries, it's impossible to bypass the
1498 * block in error and find the start of the next block.
1501 /* It's possible to have multiple input files using -M
1502 * and -f file1,file2...
1504 Vprintf(stdout
, "End-of-File encountered\n");
1514 msg_read_error("Read error while");
1515 /* if (!yflag && !reply("continue")) */
1520 * Read compressed data from a tape and uncompress it.
1521 * Handle read errors, and end of media.
1522 * Since a tape consists of separate physical blocks, we try
1523 * to recover from errors by repositioning the tape to the next
1527 readtape_comprtape(char *buf
)
1531 struct tapebuf
*tpb
;
1534 if (blkcnt
< numtrec
) {
1535 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1540 /* need to read the next block */
1542 for (i
= 0; i
< ntrec
; i
++)
1543 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1545 tpb
= (struct tapebuf
*) tapebuf
;
1547 /* read the block */
1548 size
= bufsize
+ PREFIXSIZE
;
1549 ret
= read_a_block(mt
, tapebuf
, size
, &rl
);
1553 tbufptr
= decompress_tapebuf(tpb
, rl
);
1554 if (tbufptr
== NULL
) {
1555 msg_read_error("Tape decompression error while");
1556 if (!yflag
&& !reply("continue"))
1558 memset(tapebuf
, 0, PREFIXSIZE
+ bufsize
);
1564 /* Handle errors: EOT switches to the next volume, other errors
1565 * attempt to position the tape to the next block.
1568 Vprintf(stdout
, "End-of-tape encountered\n");
1577 msg_read_error("Tape read error while");
1578 if (!yflag
&& !reply("continue"))
1580 memset(tapebuf
, 0, PREFIXSIZE
+ bufsize
);
1585 rl
= rmtioctl(MTFSR
, 1);
1591 rl
= ioctl(mt
, MTIOCTOP
, &tcom
);
1595 warn("continuation failed");
1596 if (!yflag
&& !reply("assume end-of-tape and continue"))
1598 ret
= 0; /* end of tape */
1604 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1610 * Decompress a struct tapebuf into a buffer. readsize is the size read
1611 * from the tape/file and is used for error messages. Returns a pointer
1612 * to the location of the uncompressed buffer or NULL on errors.
1613 * Adjust numtrec and complain for a short block.
1616 decompress_tapebuf(struct tapebuf
*tpbin
, int readsize
)
1618 /* If zflag is on, all blocks have a struct tapebuf prefix */
1619 /* zflag gets set in setup() from the dump header */
1620 int cresult
, blocklen
;
1621 unsigned long worklen
;
1622 char *output
= NULL
,*reason
= NULL
, *lengtherr
= NULL
;
1624 /* build a length error message */
1625 blocklen
= tpbin
->length
;
1626 if (readsize
< blocklen
+ PREFIXSIZE
)
1627 lengtherr
= "short";
1629 if (readsize
> blocklen
+ PREFIXSIZE
)
1634 if (tpbin
->compressed
) {
1635 /* uncompress whatever we read, if it fails, complain later */
1636 cresult
= uncompress(comprbuf
, &worklen
, tpbin
->buf
, blocklen
);
1640 output
= tpbin
->buf
;
1645 numtrec
= worklen
/ TP_BSIZE
;
1646 if (worklen
% TP_BSIZE
!= 0)
1647 reason
= "length mismatch";
1650 reason
= "not enough memory";
1653 reason
= "buffer too small";
1656 reason
= "data error";
1663 fprintf(stderr
, "%s compressed block: %d expected: %d\n",
1664 lengtherr
, readsize
, tpbin
->length
+ PREFIXSIZE
);
1665 fprintf(stderr
, "decompression error, block %ld: %s\n",
1666 tpblksread
+1, reason
);
1667 if (cresult
!= Z_OK
) output
= NULL
;
1673 * Print an error message for a read error.
1674 * This was exteracted from the original readtape().
1677 msg_read_error(char *m
)
1679 switch (curfile
.action
) {
1681 fprintf(stderr
, "%s trying to set up tape\n", m
);
1684 fprintf(stderr
, "%s trying to resynchronize\n", m
);
1687 fprintf(stderr
, "%s restoring %s\n", m
, curfile
.name
);
1690 fprintf(stderr
, "%s skipping over inode %lu\n", m
,
1691 (unsigned long)curfile
.ino
);
1695 #endif /* HAVE_ZLIB */
1698 * Read the first block and get the blocksize from it. Test
1699 * for a compressed dump tape/file. setup() will make the final
1700 * determination by checking the compressed flag if gethead()
1701 * finds a valid header. The test here is necessary to offset the buffer
1702 * by the size of the compressed prefix. zflag is set here so that
1703 * readtape_set can set the correct function pointer for readtape().
1704 * Note that the first block of each tape/file is not compressed
1705 * and does not have a prefix.
1708 findtapeblksize(void)
1712 struct tapebuf
*tpb
= (struct tapebuf
*) tapebuf
;
1713 struct s_spcl
*spclpt
= (struct s_spcl
*) tapebuf
;
1715 for (i
= 0; i
< ntrec
; i
++)
1716 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1720 * For a pipe or file, read in the first record. For a tape, read
1723 len
= magtapein
? ntrec
* TP_BSIZE
: TP_BSIZE
;
1725 if (read_a_block(mt
, tapebuf
, len
, &i
) <= 0)
1726 errx(1, "Tape read error on first record");
1729 * If the input is from a file or a pipe, we read TP_BSIZE
1730 * bytes looking for a dump header. If the dump is compressed
1731 * we need to read in the rest of the block, as determined
1732 * by c_ntrec in the dump header. The first block of the
1733 * dump is not compressed and does not have a prefix.
1736 if (spclpt
->c_type
== TS_TAPE
1737 && spclpt
->c_flags
& DR_COMPRESSED
) {
1738 /* It's a compressed dump file, read in the */
1739 /* rest of the block based on spclpt->c_ntrec. */
1740 if (spclpt
->c_ntrec
> ntrec
)
1741 errx(1, "Tape blocksize is too large, use "
1742 "\'-b %d\' ", spclpt
->c_ntrec
);
1743 ntrec
= spclpt
->c_ntrec
;
1744 len
= (ntrec
- 1) * TP_BSIZE
;
1748 /* read in the rest of the block based on bufsize */
1749 len
= bufsize
- TP_BSIZE
;
1751 if (read_a_block(mt
, tapebuf
+TP_BSIZE
, len
, &i
) < 0
1752 || (i
!= len
&& i
% TP_BSIZE
!= 0))
1753 errx(1,"Error reading dump file header");
1756 Vprintf(stdout
, "Input block size is %ld\n", ntrec
);
1758 } /* if (!magtapein) */
1761 * If the input is a tape, we tried to read ntrec * TP_BSIZE bytes.
1762 * If the value of ntrec is too large, we read less than
1763 * what we asked for; adjust the value of ntrec and test for
1764 * a compressed dump tape.
1767 if (i
% TP_BSIZE
!= 0) {
1768 /* may be old format compressed dump tape with a prefix */
1769 spclpt
= (struct s_spcl
*) tpb
->buf
;
1770 if (i
% TP_BSIZE
== PREFIXSIZE
1771 && tpb
->compressed
== 0
1772 && spclpt
->c_type
== TS_TAPE
1773 && spclpt
->c_flags
& DR_COMPRESSED
) {
1776 if (tpb
->length
> bufsize
)
1777 errx(1, "Tape blocksize is too large, use "
1778 "\'-b %d\' ", tpb
->length
/ TP_BSIZE
);
1781 errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)",
1784 ntrec
= i
/ TP_BSIZE
;
1785 if (spclpt
->c_type
== TS_TAPE
) {
1786 if (spclpt
->c_flags
& DR_COMPRESSED
)
1788 if (spclpt
->c_ntrec
> ntrec
)
1789 errx(1, "Tape blocksize is too large, use "
1790 "\'-b %d\' ", spclpt
->c_ntrec
);
1793 Vprintf(stdout
, "Tape block size is %ld\n", ntrec
);
1797 * Read a block of data handling all of the messy details.
1799 static int read_a_block(int fd
, char *buf
, size_t len
, long *lengthread
)
1807 i
= rmtread(buf
, size
);
1810 i
= read(fd
, buf
, size
);
1813 break; /* EOD or error */
1816 break; /* block at a time for mt */
1819 *lengthread
= len
- size
;
1838 setmagtapein(void) {
1839 struct mtget mt_stat
;
1840 static int done
= 0;
1845 /* need to know if input is really from a tape */
1848 magtapein
= rmtioctl(MTNOP
, 1) != -1;
1851 magtapein
= ioctl(mt
, MTIOCGET
, (char *)&mt_stat
) == 0;
1854 Vprintf(stdout
,"Input is from %s\n", magtapein
? "tape": "file/pipe");
1858 * Read the next block from the tape.
1859 * Check to see if it is one of several vintage headers.
1860 * If it is an old style header, convert it to a new style header.
1861 * If it is not any valid header, return an error.
1864 gethead(struct s_spcl
*buf
)
1872 char dummy
[TP_BSIZE
];
1879 u_int16_t c_inumber
;
1884 u_int16_t odi_nlink
;
1900 readtape((char *)buf
);
1901 if (buf
->c_magic
!= NFS_MAGIC
) {
1902 if (swabi(buf
->c_magic
) != NFS_MAGIC
)
1905 Vprintf(stdout
, "Note: Doing Byte swapping\n");
1909 if (checksum((int *)buf
) == FAIL
)
1912 swabst((u_char
*)"8i4s31i528bi192b2i", (u_char
*)buf
);
1915 readtape((char *)(&u_ospcl
.s_ospcl
));
1916 memset((char *)buf
, 0, (long)TP_BSIZE
);
1917 buf
->c_type
= u_ospcl
.s_ospcl
.c_type
;
1918 buf
->c_date
= u_ospcl
.s_ospcl
.c_date
;
1919 buf
->c_ddate
= u_ospcl
.s_ospcl
.c_ddate
;
1920 buf
->c_volume
= u_ospcl
.s_ospcl
.c_volume
;
1921 buf
->c_tapea
= u_ospcl
.s_ospcl
.c_tapea
;
1922 buf
->c_inumber
= u_ospcl
.s_ospcl
.c_inumber
;
1923 buf
->c_checksum
= u_ospcl
.s_ospcl
.c_checksum
;
1924 buf
->c_magic
= u_ospcl
.s_ospcl
.c_magic
;
1925 buf
->c_dinode
.di_mode
= u_ospcl
.s_ospcl
.c_dinode
.odi_mode
;
1926 buf
->c_dinode
.di_nlink
= u_ospcl
.s_ospcl
.c_dinode
.odi_nlink
;
1927 buf
->c_dinode
.di_uid
= u_ospcl
.s_ospcl
.c_dinode
.odi_uid
;
1928 buf
->c_dinode
.di_gid
= u_ospcl
.s_ospcl
.c_dinode
.odi_gid
;
1929 buf
->c_dinode
.di_size
= u_ospcl
.s_ospcl
.c_dinode
.odi_size
;
1930 buf
->c_dinode
.di_rdev
= u_ospcl
.s_ospcl
.c_dinode
.odi_rdev
;
1932 buf
->c_dinode
.di_atime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1933 buf
->c_dinode
.di_mtime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1934 buf
->c_dinode
.di_ctime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1935 #else /* __linux__ */
1936 buf
->c_dinode
.di_atime
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1937 buf
->c_dinode
.di_mtime
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1938 buf
->c_dinode
.di_ctime
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1939 #endif /* __linux__ */
1940 buf
->c_count
= u_ospcl
.s_ospcl
.c_count
;
1941 memmove(buf
->c_addr
, u_ospcl
.s_ospcl
.c_addr
, (long)256);
1942 if (u_ospcl
.s_ospcl
.c_magic
!= OFS_MAGIC
||
1943 checksum((int *)(&u_ospcl
.s_ospcl
)) == FAIL
)
1945 buf
->c_magic
= NFS_MAGIC
;
1948 if ((buf
->c_dinode
.di_size
== 0 || buf
->c_dinode
.di_size
> 0xfffffff) &&
1949 (buf
->c_dinode
.di_mode
& IFMT
) == IFDIR
&& Qcvt
== 0) {
1950 qcvt
.qval
= buf
->c_dinode
.di_size
;
1951 if (qcvt
.val
[0] || qcvt
.val
[1]) {
1952 printf("Note: Doing Quad swapping\n");
1957 qcvt
.qval
= buf
->c_dinode
.di_size
;
1959 qcvt
.val
[1] = qcvt
.val
[0];
1961 buf
->c_dinode
.di_size
= qcvt
.qval
;
1965 switch (buf
->c_type
) {
1970 * Have to patch up missing information in bit map headers
1973 buf
->c_dinode
.di_size
= buf
->c_count
* TP_BSIZE
;
1974 if (buf
->c_count
> TP_NINDIR
)
1977 for (i
= 0; i
< buf
->c_count
; i
++)
1982 if ((buf
->c_flags
& DR_NEWINODEFMT
) == 0)
1994 panic("gethead: unknown inode type %d\n", buf
->c_type
);
1998 * If we are restoring a filesystem with old format inodes,
1999 * copy the uid/gid to the new location.
2002 buf
->c_dinode
.di_uid
= buf
->c_dinode
.di_ouid
;
2003 buf
->c_dinode
.di_gid
= buf
->c_dinode
.di_ogid
;
2011 * Check that a header is where it belongs and predict the next header
2014 accthdr(struct s_spcl
*header
)
2016 static dump_ino_t previno
= 0x7fffffff;
2017 static int prevtype
;
2018 static long predict
;
2021 if (header
->c_type
== TS_TAPE
) {
2022 fprintf(stderr
, "Volume header (%s inode format) ",
2023 oldinofmt
? "old" : "new");
2024 if (header
->c_firstrec
)
2025 fprintf(stderr
, "begins with record %d",
2026 header
->c_firstrec
);
2027 fprintf(stderr
, "\n");
2028 previno
= 0x7fffffff;
2031 if (previno
== 0x7fffffff)
2035 fprintf(stderr
, "Dumped inodes map header");
2038 fprintf(stderr
, "Used inodes map header");
2041 fprintf(stderr
, "File header, ino %lu", (unsigned long)previno
);
2044 fprintf(stderr
, "File continuation header, ino %ld", (long)previno
);
2047 fprintf(stderr
, "End of tape header");
2050 if (predict
!= blksread
- 1)
2051 fprintf(stderr
, "; predicted %ld blocks, got %ld blocks",
2052 predict
, blksread
- 1);
2053 fprintf(stderr
, "\n");
2056 if (header
->c_type
!= TS_END
)
2057 for (i
= 0; i
< header
->c_count
; i
++)
2058 if (readmapflag
|| header
->c_addr
[i
] != 0)
2062 prevtype
= header
->c_type
;
2063 previno
= header
->c_inumber
;
2067 * Find an inode header.
2068 * Complain if had to skip, and complain is set.
2071 findinode(struct s_spcl
*header
)
2073 static long skipcnt
= 0;
2077 curfile
.name
= "<name unknown>";
2078 curfile
.action
= UNKNOWN
;
2082 if (header
->c_magic
!= NFS_MAGIC
) {
2084 while (gethead(header
) == FAIL
||
2085 header
->c_date
!= dumpdate
)
2088 switch (header
->c_type
) {
2092 * Skip up to the beginning of the next record
2094 for (i
= 0; i
< header
->c_count
; i
++)
2095 if (header
->c_addr
[i
])
2097 while (gethead(header
) == FAIL
||
2098 header
->c_date
!= dumpdate
)
2103 curfile
.dip
= &header
->c_dinode
;
2104 curfile
.ino
= header
->c_inumber
;
2108 curfile
.ino
= maxino
;
2112 curfile
.name
= "<file removal list>";
2116 curfile
.name
= "<file dump list>";
2120 panic("unexpected tape header\n");
2124 panic("unknown tape header type %d\n", spcl
.c_type
);
2128 } while (header
->c_type
== TS_ADDR
);
2133 fprintf(stderr
, "resync restore, skipped %ld blocks\n",
2143 j
= sizeof(union u_spcl
) / sizeof(int);
2150 /* What happens if we want to read restore tapes
2151 for a 16bit int machine??? */
2157 if (i
!= CHECKSUM
) {
2158 fprintf(stderr
, "Checksum error %o, inode %lu file %s\n", i
,
2159 (unsigned long)curfile
.ino
, curfile
.name
);
2169 #include <varargs.h>
2174 msg(const char *fmt
, ...)
2187 (void)vfprintf(stderr
, fmt
, ap
);
2190 #endif /* RRESTORE */
2193 swab16(u_char
*sp
, int n
)
2198 c
= sp
[0]; sp
[0] = sp
[1]; sp
[1] = c
;
2205 swab32(u_char
*sp
, int n
)
2210 c
= sp
[0]; sp
[0] = sp
[3]; sp
[3] = c
;
2211 c
= sp
[1]; sp
[1] = sp
[2]; sp
[2] = c
;
2218 swab64(u_char
*sp
, int n
)
2223 c
= sp
[0]; sp
[0] = sp
[7]; sp
[7] = c
;
2224 c
= sp
[1]; sp
[1] = sp
[6]; sp
[6] = c
;
2225 c
= sp
[2]; sp
[2] = sp
[5]; sp
[5] = c
;
2226 c
= sp
[3]; sp
[3] = sp
[4]; sp
[4] = c
;
2233 swabst(u_char
*cp
, u_char
*sp
)
2239 case '0': case '1': case '2': case '3': case '4':
2240 case '5': case '6': case '7': case '8': case '9':
2241 n
= (n
* 10) + (*cp
++ - '0');
2244 case 's': case 'w': case 'h':
2262 default: /* Any other character, like 'b' counts as byte. */
2276 swabst((u_char
*)"i", (u_char
*)&x
);
2284 swabst((u_char
*)"l", (u_char
*)&x
);
2291 * get the current position of the tape
2294 GetTapePos(long *pos
)
2299 if (ioctl(mt
, MTIOCPOS
, pos
) == -1) {
2301 fprintf(stdout
, "[%ld] error: %d (getting tapepos: %ld)\n",
2302 (unsigned long)getpid(), err
, *pos
);
2308 typedef struct mt_pos
{
2311 } MTPosRec
, *MTPosPtr
;
2314 * go to specified position on tape
2317 GotoTapePos(long pos
)
2324 if (ioctl(mt
, MTIOCTOP
, &buf
) == -1) {
2326 fprintf(stdout
, "[%ld] error: %d (setting tapepos: %ld)\n",
2327 (unsigned long)getpid(), err
, pos
);
2334 * read next data from tape to re-sync
2337 ReReadFromTape(void)
2341 if (gethead(&spcl
) == FAIL
) {
2343 fprintf(stdout
, "DEBUG 1 gethead failed\n");
2351 RequestVol(long tnum
)
2356 #endif /* USE_QFA */