]>
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@cybercable.fr>, 1999
9 * Copyright (c) 1983, 1993
10 * The Regents of the University of California. All rights reserved.
11 * (c) UNIX System Laboratories, Inc.
12 * All or some portions of this file are derived from material licensed
13 * to the University of California by American Telephone and Telegraph
14 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
15 * the permission of UNIX System Laboratories, Inc.
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
25 * 3. All advertising materials mentioning features or use of this software
26 * must display the following acknowledgement:
27 * This product includes software developed by the University of
28 * California, Berkeley and its contributors.
29 * 4. Neither the name of the University nor the names of its contributors
30 * may be used to endorse or promote products derived from this software
31 * without specific prior written permission.
33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
36 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47 static const char rcsid
[] =
48 "$Id: tape.c,v 1.10 2000/01/13 09:38:26 stelian Exp $";
51 #include <sys/param.h>
58 #include <linux/ext2_fs.h>
59 #include <bsdcompat.h>
61 #include <ufs/ufs/dinode.h>
62 #endif /* __linux__ */
63 #include <protocols/dumprestore.h>
66 #include <compaterr.h>
74 #include <ext2fs/ext2fs.h>
79 #include "pathnames.h"
81 static long fssize
= MAXBSIZE
;
83 static int pipein
= 0;
84 static char magtape
[NAME_MAX
];
85 static char magtapeprefix
[NAME_MAX
];
89 static union u_spcl endoftapemark
;
90 static long blksread
; /* blocks read since last header */
91 static long tpblksread
= 0; /* TP_BSIZE blocks read */
92 static long tapesread
;
93 static sigjmp_buf restart
;
94 static int gettingfile
= 0; /* restart has a valid frame */
95 static char *host
= NULL
;
99 static char lnkbuf
[MAXPATHLEN
+ 1];
102 int oldinofmt
; /* old inode format conversion required */
103 int Bcvt
; /* Swap Bytes (for CCI or sun) */
104 static int Qcvt
; /* Swap quads (for sun) */
106 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
108 static void accthdr
__P((struct s_spcl
*));
109 static int checksum
__P((int *));
110 static void findinode
__P((struct s_spcl
*));
111 static void findtapeblksize
__P((void));
112 static int gethead
__P((struct s_spcl
*));
113 static void readtape
__P((char *));
114 static void setdumpnum
__P((void));
115 static u_int swabi
__P((u_int
));
116 static u_long swabl
__P((u_long
));
117 static u_char
*swab64
__P((u_char
*, int));
118 static u_char
*swab32
__P((u_char
*, int));
119 static u_char
*swab16
__P((u_char
*, int));
120 static void terminateinput
__P((void));
121 static void xtrfile
__P((char *, size_t));
122 static void xtrlnkfile
__P((char *, size_t));
123 static void xtrlnkskip
__P((char *, size_t));
124 static void xtrmap
__P((char *, size_t));
125 static void xtrmapskip
__P((char *, size_t));
126 static void xtrskip
__P((char *, size_t));
128 static int readmapflag
;
131 * Set up an input source
134 setinput(char *source
)
140 newtapebuf(NTREC
> HIGHDENSITYTREC
? NTREC
: HIGHDENSITYTREC
);
144 if (strchr(source
, ':')) {
146 source
= strchr(host
, ':');
148 if (rmthost(host
) == 0)
152 if (strcmp(source
, "-") == 0) {
154 * Since input is coming from a pipe we must establish
155 * our own connection to the terminal.
157 terminal
= fopen(_PATH_TTY
, "r");
158 if (terminal
== NULL
) {
159 warn("cannot open %s", _PATH_TTY
);
160 terminal
= fopen(_PATH_DEVNULL
, "r");
161 if (terminal
== NULL
)
162 err(1, "cannot open %s", _PATH_DEVNULL
);
166 setuid(getuid()); /* no longer need or want root privileges */
168 strncpy(magtapeprefix
, source
, NAME_MAX
);
169 magtapeprefix
[NAME_MAX
-1] = '\0';
170 snprintf(magtape
, NAME_MAX
, "%s%03d", source
, 1);
173 strncpy(magtape
, source
, NAME_MAX
);
174 magtape
[NAME_MAX
- 1] = '\0';
178 newtapebuf(long size
)
180 static int tapebufsize
= -1;
183 if (size
<= tapebufsize
)
187 tapebuf
= malloc(size
* TP_BSIZE
);
189 errx(1, "Cannot allocate space for tape buffer");
194 * Verify that the tape drive can be accessed and
195 * that it actually is a dump tape.
203 Vprintf(stdout
, "Verify tape and initialize maps\n");
206 mt
= rmtopen(magtape
, 0);
212 mt
= open(magtape
, O_RDONLY
, 0);
214 err(1, "%s", magtape
);
218 if (!pipein
&& !bflag
)
220 if (gethead(&spcl
) == FAIL
) {
221 blkcnt
--; /* push back this block */
225 if (gethead(&spcl
) == FAIL
)
226 errx(1, "Tape is not a dump tape");
227 fprintf(stderr
, "Converting to new file system format.\n");
230 endoftapemark
.s_spcl
.c_magic
= cvtflag
? OFS_MAGIC
: NFS_MAGIC
;
231 endoftapemark
.s_spcl
.c_type
= TS_END
;
232 ip
= (int *)&endoftapemark
;
233 j
= sizeof(union u_spcl
) / sizeof(int);
238 endoftapemark
.s_spcl
.c_checksum
= CHECKSUM
- i
;
240 if (vflag
|| command
== 't' || command
== 'C')
242 if (filesys
== NULL
) {
243 filesys
= spcl
.c_filesys
;
245 dumptime
= spcl
.c_ddate
;
246 dumpdate
= spcl
.c_date
;
247 if (stat(".", &stbuf
) < 0)
248 err(1, "cannot stat .");
249 if (stbuf
.st_blksize
> 0 && stbuf
.st_blksize
< TP_BSIZE
)
251 if (stbuf
.st_blksize
>= TP_BSIZE
&& stbuf
.st_blksize
<= MAXBSIZE
)
252 fssize
= stbuf
.st_blksize
;
253 if (((fssize
- 1) & fssize
) != 0)
254 errx(1, "bad block size %ld", fssize
);
255 if (spcl
.c_volume
!= 1)
256 errx(1, "Tape is not volume 1 of the dump");
257 if (gethead(&spcl
) == FAIL
) {
258 Dprintf(stdout
, "header read failed at %ld blocks\n", (long)blksread
);
259 panic("no header after volume mark!\n");
262 if (spcl
.c_type
!= TS_CLRI
)
263 errx(1, "Cannot find file removal list");
264 maxino
= (spcl
.c_count
* TP_BSIZE
* NBBY
) + 1;
265 Dprintf(stdout
, "maxino = %ld\n", (long)maxino
);
266 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
268 panic("no memory for active inode map\n");
270 curfile
.action
= USING
;
271 getfile(xtrmap
, xtrmapskip
);
272 if (spcl
.c_type
!= TS_BITS
)
273 errx(1, "Cannot find file dump list");
274 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
275 if (map
== (char *)NULL
)
276 panic("no memory for file dump list\n");
278 curfile
.action
= USING
;
279 getfile(xtrmap
, xtrmapskip
);
281 * If there may be whiteout entries on the tape, pretend that the
282 * whiteout inode exists, so that the whiteout entries can be
286 SETINO(WINO
, dumpmap
);
290 * Prompt user to load a new dump volume.
291 * "Nextvol" is the next suggested volume to use.
292 * This suggested volume is enforced when doing full
293 * or incremental restores, but can be overridden by
294 * the user when only extracting a subset of the files.
299 long newvol
= 0, savecnt
= 0, wantnext
= 0, i
;
300 union u_spcl tmpspcl
;
301 # define tmpbuf tmpspcl.s_spcl
311 panic("Changing volumes on pipe input?\n");
319 exit(1); /* pipes do not get a second chance */
320 if (command
== 'R' || command
== 'r' || curfile
.action
!= SKIP
) {
327 while (newvol
<= 0) {
328 if (tapesread
== 0) {
329 fprintf(stderr
, "%s%s%s%s%s",
330 "You have not read any tapes yet.\n",
331 "Unless you know which volume your",
332 " file(s) are on you should start\n",
333 "with the last volume and work",
334 " towards the first.\n");
336 fprintf(stderr
, "You have read volumes");
338 for (i
= 1; i
< 32; i
++)
339 if (tapesread
& (1 << i
)) {
340 fprintf(stderr
, "%s%ld", buf
, (long)i
);
343 fprintf(stderr
, "\n");
346 fprintf(stderr
, "Specify next volume #: ");
347 (void) fflush(stderr
);
348 (void) fgets(buf
, BUFSIZ
, terminal
);
349 } while (!feof(terminal
) && buf
[0] == '\n');
355 "Volume numbers are positive numerics\n");
358 if (newvol
== volno
) {
359 tapesread
|= 1 << volno
;
364 snprintf(magtape
, NAME_MAX
, "%s%03ld", magtapeprefix
, newvol
);
365 magtape
[NAME_MAX
- 1] = '\0';
367 if (!Mflag
|| haderror
) {
369 fprintf(stderr
, "Mount tape volume %ld\n", (long)newvol
);
370 fprintf(stderr
, "Enter ``none'' if there are no more tapes\n");
371 fprintf(stderr
, "otherwise enter tape name (default: %s) ", magtape
);
372 (void) fflush(stderr
);
373 (void) fgets(buf
, BUFSIZ
, terminal
);
376 if (!strcmp(buf
, "none\n")) {
380 if (buf
[0] != '\n') {
381 (void) strcpy(magtape
, buf
);
382 magtape
[strlen(magtape
) - 1] = '\0';
387 mt
= rmtopen(magtape
, 0);
390 mt
= open(magtape
, O_RDONLY
, 0);
393 fprintf(stderr
, "Cannot open %s\n", magtape
);
402 if (gethead(&tmpbuf
) == FAIL
) {
403 Dprintf(stdout
, "header read failed at %ld blocks\n", (long)blksread
);
404 fprintf(stderr
, "tape is not dump tape\n");
409 if (tmpbuf
.c_volume
!= volno
) {
410 fprintf(stderr
, "Wrong volume (%d)\n", tmpbuf
.c_volume
);
415 if (tmpbuf
.c_date
!= dumpdate
|| tmpbuf
.c_ddate
!= dumptime
) {
417 fprintf(stderr
, "Wrong dump date\n\tgot: %s",
418 ctime4(&tmpbuf
.c_date
));
419 fprintf(stderr
, "\twanted: %s", ctime4(&dumpdate
));
421 fprintf(stderr
, "Wrong dump date\n\tgot: %s",
422 ctime(&tmpbuf
.c_date
));
423 fprintf(stderr
, "\twanted: %s", ctime(&dumpdate
));
429 tapesread
|= 1 << volno
;
432 * If continuing from the previous volume, skip over any
433 * blocks read already at the end of the previous volume.
435 * If coming to this volume at random, skip to the beginning
436 * of the next record.
438 Dprintf(stdout
, "read %ld recs, tape starts with %ld\n",
439 tpblksread
, (long)tmpbuf
.c_firstrec
);
440 if (tmpbuf
.c_type
== TS_TAPE
&& (tmpbuf
.c_flags
& DR_NEWHEADER
)) {
442 tpblksread
= tmpbuf
.c_firstrec
;
443 for (i
= tmpbuf
.c_count
; i
> 0; i
--)
445 } else if (tmpbuf
.c_firstrec
> 0 &&
446 tmpbuf
.c_firstrec
< tpblksread
- 1) {
448 * -1 since we've read the volume header
450 i
= tpblksread
- tmpbuf
.c_firstrec
- 1;
451 Dprintf(stderr
, "Skipping %ld duplicate record%s.\n",
452 (long)i
, i
> 1 ? "s" : "");
457 if (curfile
.action
== USING
) {
459 panic("active file into volume 1\n");
463 * Skip up to the beginning of the next record
465 if (tmpbuf
.c_type
== TS_TAPE
&& (tmpbuf
.c_flags
& DR_NEWHEADER
))
466 for (i
= tmpbuf
.c_count
; i
> 0; i
--)
468 (void) gethead(&spcl
);
472 siglongjmp(restart
, 1);
477 * Handle unexpected EOF.
483 if (gettingfile
&& curfile
.action
== USING
) {
484 printf("Warning: %s %s\n",
485 "End-of-input encountered while extracting", curfile
.name
);
487 curfile
.name
= "<name unknown>";
488 curfile
.action
= UNKNOWN
;
490 curfile
.ino
= maxino
;
493 siglongjmp(restart
, 1);
498 * handle multiple dumps per tape by skipping forward to the
506 if (dumpnum
== 1 || volno
!= 1)
509 errx(1, "Cannot have multiple dumps on pipe input");
511 tcom
.mt_count
= dumpnum
- 1;
514 rmtioctl(MTFSF
, dumpnum
- 1);
517 if (ioctl(mt
, (int)MTIOCTOP
, (char *)&tcom
) < 0)
525 fprintf(stdout
, "Dump date: %s", ctime4(&spcl
.c_date
));
526 fprintf(stdout
, "Dumped from: %s",
527 (spcl
.c_ddate
== 0) ? "the epoch\n" : ctime4(&spcl
.c_ddate
));
529 fprintf(stdout
, "Dump date: %s", ctime(&spcl
.c_date
));
530 fprintf(stdout
, "Dumped from: %s",
531 (spcl
.c_ddate
== 0) ? "the epoch\n" : ctime(&spcl
.c_ddate
));
533 if (spcl
.c_host
[0] == '\0')
535 fprintf(stderr
, "Level %d dump of %s on %s:%s\n",
536 spcl
.c_level
, spcl
.c_filesys
, spcl
.c_host
, spcl
.c_dev
);
537 fprintf(stderr
, "Label: %s\n", spcl
.c_label
);
541 extractfile(char *name
)
545 struct timeval timep
[2];
549 curfile
.action
= USING
;
551 timep
[0].tv_sec
= curfile
.dip
->di_atime
.tv_sec
;
552 timep
[0].tv_usec
= curfile
.dip
->di_atime
.tv_usec
;
553 timep
[1].tv_sec
= curfile
.dip
->di_mtime
.tv_sec
;
554 timep
[1].tv_usec
= curfile
.dip
->di_mtime
.tv_usec
;
555 #else /* __linux__ */
556 timep
[0].tv_sec
= curfile
.dip
->di_atime
;
557 timep
[0].tv_usec
= curfile
.dip
->di_atimensec
/ 1000;
558 timep
[1].tv_sec
= curfile
.dip
->di_mtime
;
559 timep
[1].tv_usec
= curfile
.dip
->di_mtimensec
/ 1000;
560 #endif /* __linux__ */
561 mode
= curfile
.dip
->di_mode
;
562 flags
= curfile
.dip
->di_flags
;
563 switch (mode
& IFMT
) {
566 fprintf(stderr
, "%s: unknown file mode 0%o\n", name
, mode
);
571 Vprintf(stdout
, "skipped socket %s\n", name
);
577 ep
= lookupname(name
);
578 if (ep
== NULL
|| ep
->e_flags
& EXTRACT
)
579 panic("unextracted directory %s\n", name
);
583 Vprintf(stdout
, "extract file %s\n", name
);
584 return (genliteraldir(name
, curfile
.ino
));
589 uid_t luid
= curfile
.dip
->di_uid
;
590 gid_t lgid
= curfile
.dip
->di_gid
;
594 getfile(xtrlnkfile
, xtrlnkskip
);
597 "%s: zero length symbolic link (ignored)\n", name
);
600 if (linkit(lnkbuf
, name
, SYMLINK
) == FAIL
)
603 (void) lchown(name
, luid
, lgid
);
609 Vprintf(stdout
, "extract fifo %s\n", name
);
616 if (mkfifo(name
, mode
) < 0) {
617 warn("%s: cannot create fifo", name
);
621 (void) chown(name
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
622 (void) chmod(name
, mode
);
625 (void) fsetflags(name
, flags
);
627 (void) chflags(name
, flags
);
635 Vprintf(stdout
, "extract special file %s\n", name
);
642 if (mknod(name
, mode
, (int)curfile
.dip
->di_rdev
) < 0) {
643 warn("%s: cannot create special file", name
);
647 (void) chown(name
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
648 (void) chmod(name
, mode
);
652 warn("%s: fsetflags called on a special file", name
);
653 (void) fsetflags(name
, flags
);
656 (void) chflags(name
, flags
);
663 Vprintf(stdout
, "extract file %s\n", name
);
670 if ((ofile
= open(name
, O_WRONLY
| O_CREAT
| O_TRUNC
,
672 warn("%s: cannot create file", name
);
676 (void) fchown(ofile
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
677 (void) fchmod(ofile
, mode
);
680 (void) setflags(ofile
, flags
);
682 (void) fchflags(ofile
, flags
);
684 getfile(xtrfile
, xtrskip
);
693 * skip over bit maps on the tape
699 while (spcl
.c_type
== TS_BITS
|| spcl
.c_type
== TS_CLRI
)
704 * skip over a file on the tape
710 curfile
.action
= SKIP
;
711 getfile(xtrnull
, xtrnull
);
715 * Extract a file from the tape.
716 * When an allocated block is found it is passed to the fill function;
717 * when an unallocated block (hole) is found, a zeroed buffer is passed
718 * to the skip function.
721 getfile(void (*fill
) __P((char *, size_t)), void (*skip
) __P((char *, size_t)))
724 volatile int curblk
= 0;
725 volatile quad_t size
= spcl
.c_dinode
.di_size
;
726 volatile int last_write_was_hole
= 0;
727 quad_t origsize
= size
;
728 static char clearedbuf
[MAXBSIZE
];
729 char buf
[MAXBSIZE
/ TP_BSIZE
][TP_BSIZE
];
732 if (spcl
.c_type
== TS_END
)
733 panic("ran off end of tape\n");
734 if (spcl
.c_magic
!= NFS_MAGIC
)
735 panic("not at beginning of a file\n");
736 if (!gettingfile
&& setjmp(restart
) != 0)
740 for (i
= 0; i
< spcl
.c_count
; i
++) {
741 if (readmapflag
|| spcl
.c_addr
[i
]) {
742 readtape(&buf
[curblk
++][0]);
743 if (curblk
== fssize
/ TP_BSIZE
) {
744 (*fill
)((char *)buf
, (size_t)(size
> TP_BSIZE
?
745 fssize
: (curblk
- 1) * TP_BSIZE
+ size
));
747 last_write_was_hole
= 0;
751 (*fill
)((char *)buf
, (size_t)(size
> TP_BSIZE
?
753 (curblk
- 1) * TP_BSIZE
+ size
));
756 (*skip
)(clearedbuf
, (long)(size
> TP_BSIZE
?
758 last_write_was_hole
= 1;
760 if ((size
-= TP_BSIZE
) <= 0) {
761 for (i
++; i
< spcl
.c_count
; i
++)
762 if (readmapflag
|| spcl
.c_addr
[i
])
767 if (gethead(&spcl
) == GOOD
&& size
> 0) {
768 if (spcl
.c_type
== TS_ADDR
)
771 "Missing address (header) block for %s at %ld blocks\n",
772 curfile
.name
, (long)blksread
);
775 (*fill
)((char *)buf
, (size_t)(curblk
* TP_BSIZE
) + size
);
776 last_write_was_hole
= 0;
778 if (last_write_was_hole
) {
779 ftruncate(ofile
, origsize
);
786 * Write out the next block of a file.
789 xtrfile(char *buf
, size_t size
)
794 if (write(ofile
, buf
, (int) size
) == -1)
795 err(1, "write error extracting inode %lu, name %s\nwrite",
796 (unsigned long)curfile
.ino
, curfile
.name
);
800 * Skip over a hole in a file.
804 xtrskip(char *buf
, size_t size
)
807 if (lseek(ofile
, (off_t
)size
, SEEK_CUR
) == -1)
808 err(1, "seek error extracting inode %lu, name %s\nlseek",
809 (unsigned long)curfile
.ino
, curfile
.name
);
813 * Collect the next block of a symbolic link.
816 xtrlnkfile(char *buf
, size_t size
)
820 if (pathlen
> MAXPATHLEN
)
821 errx(1, "symbolic link name: %s->%s%s; too long %d",
822 curfile
.name
, lnkbuf
, buf
, pathlen
);
823 (void) strcat(lnkbuf
, buf
);
827 * Skip over a hole in a symbolic link (should never happen).
831 xtrlnkskip(char *buf
, size_t size
)
834 errx(1, "unallocated block in symbolic link %s", curfile
.name
);
838 * Collect the next block of a bit map.
841 xtrmap(char *buf
, size_t size
)
844 memmove(map
, buf
, size
);
849 * Skip over a hole in a bit map (should never happen).
853 xtrmapskip(char *buf
, size_t size
)
856 panic("hole in map\n");
861 * Noop, when an extraction function is not needed.
865 xtrnull(char *buf
, size_t size
)
872 do_cmpfiles(int fd_tape
, int fd_disk
, long size
)
874 static char buf_tape
[BUFSIZ
];
875 static char buf_disk
[BUFSIZ
];
880 if ((n_tape
= read(fd_tape
, buf_tape
, sizeof(buf_tape
))) < 1) {
881 close(fd_tape
), close(fd_disk
);
882 panic("do_cmpfiles: unexpected EOF[1]");
884 if ((n_disk
= read(fd_disk
, buf_disk
, sizeof(buf_tape
))) < 1) {
885 close(fd_tape
), close(fd_disk
);
886 panic("do_cmpfiles: unexpected EOF[2]");
888 if (n_tape
!= n_disk
) {
889 close(fd_tape
), close(fd_disk
);
890 panic("do_cmpfiles: sizes different!");
892 if (memcmp(buf_tape
, buf_disk
, (size_t)n_tape
) != 0) return (1);
898 /* for debugging compare problems */
899 #undef COMPARE_FAIL_KEEP_FILE
902 #ifdef COMPARE_FAIL_KEEP_FILE
903 /* return true if tapefile should be unlinked after compare */
908 cmpfiles(char *tapefile
, char *diskfile
, struct stat
*sbuf_disk
)
910 struct stat sbuf_tape
;
911 int fd_tape
, fd_disk
;
913 if (stat(tapefile
, &sbuf_tape
) != 0) {
914 panic("Can't lstat tmp file %s: %s\n", tapefile
,
918 if (sbuf_disk
->st_size
!= sbuf_tape
.st_size
) {
920 "%s: size changed from %ld to %ld.\n",
921 diskfile
, (long)sbuf_tape
.st_size
, (long)sbuf_disk
->st_size
);
922 #ifdef COMPARE_FAIL_KEEP_FILE
929 if ((fd_tape
= open(tapefile
, O_RDONLY
)) < 0) {
930 panic("Can't open %s: %s\n", tapefile
, strerror(errno
));
932 if ((fd_disk
= open(diskfile
, O_RDONLY
)) < 0) {
934 panic("Can't open %s: %s\n", diskfile
, strerror(errno
));
937 if (do_cmpfiles(fd_tape
, fd_disk
, sbuf_tape
.st_size
)) {
938 fprintf(stderr
, "%s: tape and disk copies are different\n",
942 #ifdef COMPARE_FAIL_KEEP_FILE
943 /* rename the file to live in /tmp */
944 /* rename `tapefile' to /tmp/<basename of diskfile> */
946 char *p
= strrchr(diskfile
, '/');
947 char newname
[MAXPATHLEN
];
949 panic("can't find / in %s\n", diskfile
);
951 snprintf(newname
, sizeof(newname
), "%s/debug/%s", tmpdir
, p
+ 1);
952 if (rename(tapefile
, newname
)) {
953 panic("rename from %s to %s failed: %s\n",
957 fprintf(stderr
, "*** %s saved to %s\n",
962 /* don't unlink the file (it's not there anymore */
971 #ifdef COMPARE_FAIL_KEEP_FILE
976 static char tmpfilename
[MAXPATHLEN
];
979 comparefile(char *name
)
981 static char *tmpfile
= NULL
;
983 struct stat sb
, stemp
;
986 if ((r
= lstat(name
, &sb
)) != 0) {
987 warn("%s: does not exist (%d)", name
, r
);
993 curfile
.action
= USING
;
994 mode
= curfile
.dip
->di_mode
;
996 Vprintf(stdout
, "comparing %s (size: %ld, mode: 0%o)\n", name
,
997 (long)sb
.st_size
, mode
);
999 if (sb
.st_mode
!= mode
) {
1000 fprintf(stderr
, "%s: mode changed from 0%o to 0%o.\n",
1001 name
, mode
& 07777, sb
.st_mode
& 07777);
1003 switch (mode
& IFMT
) {
1017 char lbuf
[MAXPATHLEN
+ 1];
1020 if (!(sb
.st_mode
& S_IFLNK
)) {
1021 fprintf(stderr
, "%s: is no longer a symbolic link\n",
1027 getfile(xtrlnkfile
, xtrlnkskip
);
1030 "%s: zero length symbolic link (ignored)\n",
1034 if ((lsize
= readlink(name
, lbuf
, MAXPATHLEN
)) < 0) {
1035 panic("readlink of %s failed: %s", name
,
1039 if (strcmp(lbuf
, lnkbuf
) != 0) {
1041 "%s: symbolic link changed from %s to %s.\n",
1042 name
, lnkbuf
, lbuf
);
1050 if (!(sb
.st_mode
& (S_IFCHR
|S_IFBLK
))) {
1051 fprintf(stderr
, "%s: no longer a special file\n",
1057 if (sb
.st_rdev
!= (int)curfile
.dip
->di_rdev
) {
1059 "%s: device changed from %d,%d to %d,%d.\n",
1061 ((int)curfile
.dip
->di_rdev
>> 8) & 0xff,
1062 (int)curfile
.dip
->di_rdev
& 0xff,
1063 ((int)sb
.st_rdev
>> 8) & 0xff,
1064 (int)sb
.st_rdev
& 0xff);
1070 if (tmpfile
== NULL
) {
1071 /* argument to mktemp() must not be in RO space: */
1072 snprintf(tmpfilename
, sizeof(tmpfilename
), "%s/restoreCXXXXXX", tmpdir
);
1073 tmpfile
= mktemp(&tmpfilename
[0]);
1075 if ((stat(tmpfile
, &stemp
) == 0) && (unlink(tmpfile
) != 0)) {
1076 panic("cannot delete tmp file %s: %s\n",
1077 tmpfile
, strerror(errno
));
1079 if ((ofile
= creat(tmpfile
, 0600)) < 0) {
1080 panic("cannot create file temp file %s: %s\n",
1081 name
, strerror(errno
));
1083 getfile(xtrfile
, xtrskip
);
1084 (void) close(ofile
);
1085 #ifdef COMPARE_FAIL_KEEP_FILE
1086 if (cmpfiles(tmpfile
, name
, &sb
))
1089 cmpfiles(tmpfile
, name
, &sb
);
1098 * Read TP_BSIZE blocks from the input.
1099 * Handle read errors, and end of media.
1104 ssize_t rd
, newvol
, i
;
1105 int cnt
, seek_failed
;
1107 if (blkcnt
< numtrec
) {
1108 memmove(buf
, &tapebuf
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1113 for (i
= 0; i
< ntrec
; i
++)
1114 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1117 cnt
= ntrec
* TP_BSIZE
;
1122 i
= rmtread(&tapebuf
[rd
], cnt
);
1125 i
= read(mt
, &tapebuf
[rd
], cnt
);
1127 * Check for mid-tape short read error.
1128 * If found, skip rest of buffer and start with the next.
1130 if (!pipein
&& numtrec
< ntrec
&& i
> 0) {
1131 Dprintf(stdout
, "mid-media short read error.\n");
1135 * Handle partial block read.
1137 if (pipein
&& i
== 0 && rd
> 0)
1139 else if (i
> 0 && i
!= ntrec
* TP_BSIZE
) {
1148 * Short read. Process the blocks read.
1150 if (i
% TP_BSIZE
!= 0)
1152 "partial block read: %ld should be %ld\n",
1153 (long)i
, ntrec
* TP_BSIZE
);
1154 numtrec
= i
/ TP_BSIZE
;
1158 * Handle read error.
1161 fprintf(stderr
, "Tape read error while ");
1162 switch (curfile
.action
) {
1164 fprintf(stderr
, "trying to set up tape\n");
1167 fprintf(stderr
, "trying to resynchronize\n");
1170 fprintf(stderr
, "restoring %s\n", curfile
.name
);
1173 fprintf(stderr
, "skipping over inode %lu\n",
1174 (unsigned long)curfile
.ino
);
1177 if (!yflag
&& !reply("continue"))
1179 i
= ntrec
* TP_BSIZE
;
1180 memset(tapebuf
, 0, (size_t)i
);
1183 seek_failed
= (rmtseek(i
, 1) < 0);
1186 seek_failed
= (lseek(mt
, i
, SEEK_CUR
) == (off_t
)-1);
1189 err(1, "continuation failed");
1192 * Handle end of tape.
1195 Vprintf(stdout
, "End-of-tape encountered\n");
1204 if (rd
% TP_BSIZE
!= 0)
1205 panic("partial block read: %d should be %d\n",
1206 rd
, ntrec
* TP_BSIZE
);
1208 memmove(&tapebuf
[rd
], &endoftapemark
, TP_BSIZE
);
1211 memmove(buf
, &tapebuf
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1217 findtapeblksize(void)
1221 for (i
= 0; i
< ntrec
; i
++)
1222 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1226 i
= rmtread(tapebuf
, (size_t)(ntrec
* TP_BSIZE
));
1229 i
= read(mt
, tapebuf
, (size_t)(ntrec
* TP_BSIZE
));
1232 err(1, "tape read error");
1233 if (i
% TP_BSIZE
!= 0)
1234 errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)",
1236 ntrec
= i
/ TP_BSIZE
;
1238 Vprintf(stdout
, "Tape block size is %ld\n", ntrec
);
1256 * Read the next block from the tape.
1257 * Check to see if it is one of several vintage headers.
1258 * If it is an old style header, convert it to a new style header.
1259 * If it is not any valid header, return an error.
1262 gethead(struct s_spcl
*buf
)
1270 char dummy
[TP_BSIZE
];
1277 u_int16_t c_inumber
;
1282 u_int16_t odi_nlink
;
1298 readtape((char *)buf
);
1299 if (buf
->c_magic
!= NFS_MAGIC
) {
1300 if (swabi(buf
->c_magic
) != NFS_MAGIC
)
1303 Vprintf(stdout
, "Note: Doing Byte swapping\n");
1307 if (checksum((int *)buf
) == FAIL
)
1310 swabst((u_char
*)"8i4s31i528bi192b2i", (u_char
*)buf
);
1313 readtape((char *)(&u_ospcl
.s_ospcl
));
1314 memset((char *)buf
, 0, (long)TP_BSIZE
);
1315 buf
->c_type
= u_ospcl
.s_ospcl
.c_type
;
1316 buf
->c_date
= u_ospcl
.s_ospcl
.c_date
;
1317 buf
->c_ddate
= u_ospcl
.s_ospcl
.c_ddate
;
1318 buf
->c_volume
= u_ospcl
.s_ospcl
.c_volume
;
1319 buf
->c_tapea
= u_ospcl
.s_ospcl
.c_tapea
;
1320 buf
->c_inumber
= u_ospcl
.s_ospcl
.c_inumber
;
1321 buf
->c_checksum
= u_ospcl
.s_ospcl
.c_checksum
;
1322 buf
->c_magic
= u_ospcl
.s_ospcl
.c_magic
;
1323 buf
->c_dinode
.di_mode
= u_ospcl
.s_ospcl
.c_dinode
.odi_mode
;
1324 buf
->c_dinode
.di_nlink
= u_ospcl
.s_ospcl
.c_dinode
.odi_nlink
;
1325 buf
->c_dinode
.di_uid
= u_ospcl
.s_ospcl
.c_dinode
.odi_uid
;
1326 buf
->c_dinode
.di_gid
= u_ospcl
.s_ospcl
.c_dinode
.odi_gid
;
1327 buf
->c_dinode
.di_size
= u_ospcl
.s_ospcl
.c_dinode
.odi_size
;
1328 buf
->c_dinode
.di_rdev
= u_ospcl
.s_ospcl
.c_dinode
.odi_rdev
;
1330 buf
->c_dinode
.di_atime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1331 buf
->c_dinode
.di_mtime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1332 buf
->c_dinode
.di_ctime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1333 #else /* __linux__ */
1334 buf
->c_dinode
.di_atime
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1335 buf
->c_dinode
.di_mtime
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1336 buf
->c_dinode
.di_ctime
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1337 #endif /* __linux__ */
1338 buf
->c_count
= u_ospcl
.s_ospcl
.c_count
;
1339 memmove(buf
->c_addr
, u_ospcl
.s_ospcl
.c_addr
, (long)256);
1340 if (u_ospcl
.s_ospcl
.c_magic
!= OFS_MAGIC
||
1341 checksum((int *)(&u_ospcl
.s_ospcl
)) == FAIL
)
1343 buf
->c_magic
= NFS_MAGIC
;
1346 if ((buf
->c_dinode
.di_size
== 0 || buf
->c_dinode
.di_size
> 0xfffffff) &&
1347 (buf
->c_dinode
.di_mode
& IFMT
) == IFDIR
&& Qcvt
== 0) {
1348 qcvt
.qval
= buf
->c_dinode
.di_size
;
1349 if (qcvt
.val
[0] || qcvt
.val
[1]) {
1350 printf("Note: Doing Quad swapping\n");
1355 qcvt
.qval
= buf
->c_dinode
.di_size
;
1357 qcvt
.val
[1] = qcvt
.val
[0];
1359 buf
->c_dinode
.di_size
= qcvt
.qval
;
1363 switch (buf
->c_type
) {
1368 * Have to patch up missing information in bit map headers
1371 buf
->c_dinode
.di_size
= buf
->c_count
* TP_BSIZE
;
1372 if (buf
->c_count
> TP_NINDIR
)
1375 for (i
= 0; i
< buf
->c_count
; i
++)
1380 if ((buf
->c_flags
& DR_NEWINODEFMT
) == 0)
1392 panic("gethead: unknown inode type %d\n", buf
->c_type
);
1396 * If we are restoring a filesystem with old format inodes,
1397 * copy the uid/gid to the new location.
1400 buf
->c_dinode
.di_uid
= buf
->c_dinode
.di_ouid
;
1401 buf
->c_dinode
.di_gid
= buf
->c_dinode
.di_ogid
;
1409 * Check that a header is where it belongs and predict the next header
1412 accthdr(struct s_spcl
*header
)
1414 static ino_t previno
= 0x7fffffff;
1415 static int prevtype
;
1416 static long predict
;
1419 if (header
->c_type
== TS_TAPE
) {
1420 fprintf(stderr
, "Volume header (%s inode format) ",
1421 oldinofmt
? "old" : "new");
1422 if (header
->c_firstrec
)
1423 fprintf(stderr
, "begins with record %d",
1424 header
->c_firstrec
);
1425 fprintf(stderr
, "\n");
1426 previno
= 0x7fffffff;
1429 if (previno
== 0x7fffffff)
1433 fprintf(stderr
, "Dumped inodes map header");
1436 fprintf(stderr
, "Used inodes map header");
1439 fprintf(stderr
, "File header, ino %lu", (unsigned long)previno
);
1442 fprintf(stderr
, "File continuation header, ino %ld", (long)previno
);
1445 fprintf(stderr
, "End of tape header");
1448 if (predict
!= blksread
- 1)
1449 fprintf(stderr
, "; predicted %ld blocks, got %ld blocks",
1450 predict
, blksread
- 1);
1451 fprintf(stderr
, "\n");
1454 if (header
->c_type
!= TS_END
)
1455 for (i
= 0; i
< header
->c_count
; i
++)
1456 if (readmapflag
|| header
->c_addr
[i
] != 0)
1460 prevtype
= header
->c_type
;
1461 previno
= header
->c_inumber
;
1465 * Find an inode header.
1466 * Complain if had to skip, and complain is set.
1469 findinode(struct s_spcl
*header
)
1471 static long skipcnt
= 0;
1475 curfile
.name
= "<name unknown>";
1476 curfile
.action
= UNKNOWN
;
1480 if (header
->c_magic
!= NFS_MAGIC
) {
1482 while (gethead(header
) == FAIL
||
1483 header
->c_date
!= dumpdate
)
1486 switch (header
->c_type
) {
1490 * Skip up to the beginning of the next record
1492 for (i
= 0; i
< header
->c_count
; i
++)
1493 if (header
->c_addr
[i
])
1495 while (gethead(header
) == FAIL
||
1496 header
->c_date
!= dumpdate
)
1501 curfile
.dip
= &header
->c_dinode
;
1502 curfile
.ino
= header
->c_inumber
;
1506 curfile
.ino
= maxino
;
1510 curfile
.name
= "<file removal list>";
1514 curfile
.name
= "<file dump list>";
1518 panic("unexpected tape header\n");
1522 panic("unknown tape header type %d\n", spcl
.c_type
);
1526 } while (header
->c_type
== TS_ADDR
);
1528 fprintf(stderr
, "resync restore, skipped %ld blocks\n",
1538 j
= sizeof(union u_spcl
) / sizeof(int);
1545 /* What happens if we want to read restore tapes
1546 for a 16bit int machine??? */
1552 if (i
!= CHECKSUM
) {
1553 fprintf(stderr
, "Checksum error %o, inode %lu file %s\n", i
,
1554 (unsigned long)curfile
.ino
, curfile
.name
);
1564 #include <varargs.h>
1569 msg(const char *fmt
, ...)
1582 (void)vfprintf(stderr
, fmt
, ap
);
1585 #endif /* RRESTORE */
1588 swab16(u_char
*sp
, int n
)
1593 c
= sp
[0]; sp
[0] = sp
[1]; sp
[1] = c
;
1600 swab32(u_char
*sp
, int n
)
1605 c
= sp
[0]; sp
[0] = sp
[3]; sp
[3] = c
;
1606 c
= sp
[1]; sp
[1] = sp
[2]; sp
[2] = c
;
1613 swab64(u_char
*sp
, int n
)
1618 c
= sp
[0]; sp
[0] = sp
[7]; sp
[7] = c
;
1619 c
= sp
[1]; sp
[1] = sp
[6]; sp
[6] = c
;
1620 c
= sp
[2]; sp
[2] = sp
[5]; sp
[5] = c
;
1621 c
= sp
[3]; sp
[3] = sp
[4]; sp
[4] = c
;
1628 swabst(u_char
*cp
, u_char
*sp
)
1634 case '0': case '1': case '2': case '3': case '4':
1635 case '5': case '6': case '7': case '8': case '9':
1636 n
= (n
* 10) + (*cp
++ - '0');
1639 case 's': case 'w': case 'h':
1657 default: /* Any other character, like 'b' counts as byte. */
1671 swabst((u_char
*)"i", (u_char
*)&x
);
1678 swabst((u_char
*)"l", (u_char
*)&x
);