]>
git.wh0rd.org - dump.git/blob - tape.c
f46ac48a1f5ea0a9f60efd916fb66ae4a661f546
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 1.34 2001/04/12 16:03:30 stelian Exp $";
54 #include <compaterr.h>
61 #include <sys/param.h>
69 #include <linux/ext2_fs.h>
70 #include <ext2fs/ext2fs.h>
71 #include <bsdcompat.h>
73 #include <ufs/ufs/dinode.h>
74 #endif /* __linux__ */
75 #include <protocols/dumprestore.h>
79 #endif /* HAVE_ZLIB */
83 #include "pathnames.h"
88 static long fssize
= MAXBSIZE
;
90 static int pipein
= 0;
91 static int magtapein
= 0; /* input is from magtape */
92 static char magtape
[MAXPATHLEN
];
93 static char magtapeprefix
[MAXPATHLEN
];
96 static char *tapebuf
; /* input buffer for read */
97 static int bufsize
; /* buffer size without prefix */
98 static char *tbufptr
= NULL
; /* active tape buffer */
100 static char *comprbuf
; /* uncompress work buf */
101 static size_t comprlen
; /* size including prefix */
103 static union u_spcl endoftapemark
;
104 static long blksread
; /* blocks read since last header */
105 static long tpblksread
= 0; /* TP_BSIZE blocks read */
106 static long tapesread
;
107 static sigjmp_buf restart
;
108 static int gettingfile
= 0; /* restart has a valid frame */
109 static char *host
= NULL
;
113 static char lnkbuf
[MAXPATHLEN
+ 1];
116 int oldinofmt
; /* old inode format conversion required */
117 int Bcvt
; /* Swap Bytes (for CCI or sun) */
118 static int Qcvt
; /* Swap quads (for sun) */
120 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
122 static void accthdr
__P((struct s_spcl
*));
123 static int checksum
__P((int *));
124 static void findinode
__P((struct s_spcl
*));
125 static void findtapeblksize
__P((void));
126 static int gethead
__P((struct s_spcl
*));
127 static void readtape
__P((char *));
128 static void setdumpnum
__P((void));
129 static u_int swabi
__P((u_int
));
131 static u_long swabl
__P((u_long
));
133 static u_char
*swab64
__P((u_char
*, int));
134 static u_char
*swab32
__P((u_char
*, int));
135 static u_char
*swab16
__P((u_char
*, int));
136 static void terminateinput
__P((void));
137 static void xtrfile
__P((char *, size_t));
138 static void xtrlnkfile
__P((char *, size_t));
139 static void xtrlnkskip
__P((char *, size_t));
140 static void xtrmap
__P((char *, size_t));
141 static void xtrmapskip
__P((char *, size_t));
142 static void xtrskip
__P((char *, size_t));
145 static void newcomprbuf
__P((long));
146 static void readtape_set
__P((char *));
147 static void readtape_uncompr
__P((char *));
148 static void readtape_comprfile
__P((char *));
149 static void readtape_comprtape
__P((char *));
150 static char *decompress_tapebuf
__P((struct tapebuf
*, int));
151 static void msg_read_error
__P((char *));
153 static int read_a_block
__P((int, char *, size_t, long *));
154 #define PREFIXSIZE sizeof(struct tapebuf)
156 #define COMPARE_ONTHEFLY 1
159 static int ifile
; /* input file for compare */
160 static int cmperror
; /* compare error */
161 static void xtrcmpfile
__P((char *, size_t));
162 static void xtrcmpskip
__P((char *, size_t));
165 static int readmapflag
;
168 * Set up an input source. This is called from main.c before setup() is.
171 setinput(char *source
)
177 newtapebuf(NTREC
> HIGHDENSITYTREC
? NTREC
: HIGHDENSITYTREC
);
181 if (strchr(source
, ':')) {
183 source
= strchr(host
, ':');
185 if (rmthost(host
) == 0)
189 if (strcmp(source
, "-") == 0) {
191 * Since input is coming from a pipe we must establish
192 * our own connection to the terminal.
194 terminal
= fopen(_PATH_TTY
, "r");
195 if (terminal
== NULL
) {
196 warn("cannot open %s", _PATH_TTY
);
197 terminal
= fopen(_PATH_DEVNULL
, "r");
198 if (terminal
== NULL
)
199 err(1, "cannot open %s", _PATH_DEVNULL
);
203 setuid(getuid()); /* no longer need or want root privileges */
205 strncpy(magtapeprefix
, source
, MAXPATHLEN
);
206 magtapeprefix
[MAXPATHLEN
-1] = '\0';
207 snprintf(magtape
, MAXPATHLEN
, "%s%03d", source
, 1);
210 strncpy(magtape
, source
, MAXPATHLEN
);
211 magtape
[MAXPATHLEN
- 1] = '\0';
215 newtapebuf(long size
)
217 static int tapebufsize
= -1;
220 bufsize
= ntrec
* TP_BSIZE
;
221 if (size
<= tapebufsize
)
225 tapebuf
= malloc(size
* TP_BSIZE
+ sizeof(struct tapebuf
));
227 errx(1, "Cannot allocate space for tape buffer");
233 newcomprbuf(long size
)
235 if (size
<= comprlen
)
237 comprlen
= size
+ sizeof(struct tapebuf
);
238 if (comprbuf
!= NULL
)
240 comprbuf
= malloc(comprlen
);
241 if (comprbuf
== NULL
)
242 errx(1, "Cannot allocate space for decompress buffer");
244 #endif /* HAVE_ZLIB */
247 * Verify that the tape drive can be accessed and
248 * that it actually is a dump tape.
255 struct mtget mt_stat
;
257 Vprintf(stdout
, "Verify tape and initialize maps\n");
260 mt
= rmtopen(magtape
, 0);
266 mt
= open(magtape
, O_RDONLY
, 0);
268 err(1, "%s", magtape
);
271 /* need to know if input is really from a tape */
274 magtapein
= rmtioctl(MTNOP
, 1) != -1;
277 magtapein
= ioctl(mt
, MTIOCGET
, (char *) &mt_stat
) == 0;
280 Vprintf(stdout
,"Input is from %s\n", magtapein
? "tape": "file/pipe");
284 if (gethead(&spcl
) == FAIL
) {
285 blkcnt
--; /* push back this block */
289 if (gethead(&spcl
) == FAIL
)
290 errx(1, "Tape is not a dump tape");
291 fprintf(stderr
, "Converting to new file system format.\n");
295 fprintf(stderr
, "Dump tape is compressed.\n");
297 newcomprbuf(bufsize
);
299 errx(1,"This restore version doesn't support decompression");
300 #endif /* HAVE_ZLIB */
303 endoftapemark
.s_spcl
.c_magic
= cvtflag
? OFS_MAGIC
: NFS_MAGIC
;
304 endoftapemark
.s_spcl
.c_type
= TS_END
;
305 ip
= (int *)&endoftapemark
;
306 j
= sizeof(union u_spcl
) / sizeof(int);
311 endoftapemark
.s_spcl
.c_checksum
= CHECKSUM
- i
;
313 if (vflag
|| command
== 't' || command
== 'C')
315 if (filesys
[0] == '\0') {
317 strncpy(filesys
, spcl
.c_filesys
, NAMELEN
);
318 filesys
[NAMELEN
- 1] = '\0';
319 dirptr
= strstr(filesys
, " (dir");
323 dumptime
= spcl
.c_ddate
;
324 dumpdate
= spcl
.c_date
;
325 if (stat(".", &stbuf
) < 0)
326 err(1, "cannot stat .");
327 if (stbuf
.st_blksize
> 0 && stbuf
.st_blksize
< TP_BSIZE
)
329 if (stbuf
.st_blksize
>= TP_BSIZE
&& stbuf
.st_blksize
<= MAXBSIZE
)
330 fssize
= stbuf
.st_blksize
;
331 if (((fssize
- 1) & fssize
) != 0)
332 errx(1, "bad block size %ld", fssize
);
333 if (spcl
.c_volume
!= 1)
334 errx(1, "Tape is not volume 1 of the dump");
335 if (gethead(&spcl
) == FAIL
) {
336 Dprintf(stdout
, "header read failed at %ld blocks\n", (long)blksread
);
337 panic("no header after volume mark!\n");
340 if (spcl
.c_type
!= TS_CLRI
)
341 errx(1, "Cannot find file removal list");
342 maxino
= (spcl
.c_count
* TP_BSIZE
* NBBY
) + 1;
343 Dprintf(stdout
, "maxino = %ld\n", (long)maxino
);
344 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
346 errx(1, "no memory for active inode map");
348 curfile
.action
= USING
;
349 getfile(xtrmap
, xtrmapskip
);
350 if (spcl
.c_type
!= TS_BITS
)
351 errx(1, "Cannot find file dump list");
352 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
353 if (map
== (char *)NULL
)
354 errx(1, "no memory for file dump list");
356 curfile
.action
= USING
;
357 getfile(xtrmap
, xtrmapskip
);
359 * If there may be whiteout entries on the tape, pretend that the
360 * whiteout inode exists, so that the whiteout entries can be
364 SETINO(WINO
, dumpmap
);
368 * Prompt user to load a new dump volume.
369 * "Nextvol" is the next suggested volume to use.
370 * This suggested volume is enforced when doing full
371 * or incremental restores, but can be overridden by
372 * the user when only extracting a subset of the files.
377 long newvol
= 0, savecnt
= 0, wantnext
= 0, i
;
378 union u_spcl tmpspcl
;
379 # define tmpbuf tmpspcl.s_spcl
389 panic("Changing volumes on pipe input?\n");
397 exit(1); /* pipes do not get a second chance */
398 if (command
== 'R' || command
== 'r' || curfile
.action
!= SKIP
) {
405 while (newvol
<= 0) {
406 if (tapesread
== 0) {
407 fprintf(stderr
, "%s%s%s%s%s",
408 "You have not read any tapes yet.\n",
409 "Unless you know which volume your",
410 " file(s) are on you should start\n",
411 "with the last volume and work",
412 " towards the first.\n");
414 fprintf(stderr
, "You have read volumes");
416 for (i
= 1; i
< 32; i
++)
417 if (tapesread
& (1 << i
)) {
418 fprintf(stderr
, "%s%ld", buf
, (long)i
);
421 fprintf(stderr
, "\n");
424 fprintf(stderr
, "Specify next volume #: ");
425 (void) fflush(stderr
);
426 (void) fgets(buf
, TP_BSIZE
, terminal
);
427 } while (!feof(terminal
) && buf
[0] == '\n');
433 "Volume numbers are positive numerics\n");
436 if (newvol
== volno
) {
437 tapesread
|= 1 << volno
;
442 snprintf(magtape
, MAXPATHLEN
, "%s%03ld", magtapeprefix
, newvol
);
443 magtape
[MAXPATHLEN
- 1] = '\0';
445 if (!Mflag
|| haderror
) {
447 fprintf(stderr
, "Mount tape volume %ld\n", (long)newvol
);
448 fprintf(stderr
, "Enter ``none'' if there are no more tapes\n");
449 fprintf(stderr
, "otherwise enter tape name (default: %s) ", magtape
);
450 (void) fflush(stderr
);
451 (void) fgets(buf
, TP_BSIZE
, terminal
);
454 if (!strcmp(buf
, "none\n")) {
458 if (buf
[0] != '\n') {
459 (void) strcpy(magtape
, buf
);
460 magtape
[strlen(magtape
) - 1] = '\0';
465 mt
= rmtopen(magtape
, 0);
468 mt
= open(magtape
, O_RDONLY
, 0);
471 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
);
846 (*skip
)(clearedbuf
, size
);
847 last_write_was_hole
= 1;
849 if (last_write_was_hole
) {
850 ftruncate(ofile
, origsize
);
857 * Write out the next block of a file.
860 xtrfile(char *buf
, size_t size
)
865 if (write(ofile
, buf
, (int) size
) == -1)
866 err(1, "write error extracting inode %lu, name %s\nwrite",
867 (unsigned long)curfile
.ino
, curfile
.name
);
871 * Skip over a hole in a file.
875 xtrskip(char *buf
, size_t size
)
878 if (lseek(ofile
, (off_t
)size
, SEEK_CUR
) == -1)
879 err(1, "seek error extracting inode %lu, name %s\nlseek",
880 (unsigned long)curfile
.ino
, curfile
.name
);
884 * Collect the next block of a symbolic link.
887 xtrlnkfile(char *buf
, size_t size
)
891 if (pathlen
> MAXPATHLEN
)
892 errx(1, "symbolic link name: %s->%s%s; too long %d",
893 curfile
.name
, lnkbuf
, buf
, pathlen
);
894 (void) strcat(lnkbuf
, buf
);
898 * Skip over a hole in a symbolic link (should never happen).
902 xtrlnkskip(char *buf
, size_t size
)
905 errx(1, "unallocated block in symbolic link %s", curfile
.name
);
909 * Collect the next block of a bit map.
912 xtrmap(char *buf
, size_t size
)
915 memmove(map
, buf
, size
);
920 * Skip over a hole in a bit map (should never happen).
924 xtrmapskip(char *buf
, size_t size
)
927 panic("hole in map\n");
932 * Noop, when an extraction function is not needed.
936 xtrnull(char *buf
, size_t size
)
944 * Compare the next block of a file.
947 xtrcmpfile(char *buf
, size_t size
)
949 static char cmpbuf
[MAXBSIZE
];
954 if (read(ifile
, cmpbuf
, size
) != size
) {
955 fprintf(stderr
, "%s: size has changed.\n",
961 if (memcmp(buf
, cmpbuf
, size
) != 0) {
962 fprintf(stderr
, "%s: tape and disk copies are different\n",
970 * Skip over a hole in a file.
973 xtrcmpskip(char *buf
, size_t size
)
975 static char cmpbuf
[MAXBSIZE
];
981 if (read(ifile
, cmpbuf
, size
) != size
) {
982 fprintf(stderr
, "%s: size has changed.\n",
988 for (i
= 0; i
< size
; ++i
)
989 if (cmpbuf
[i
] != '\0') {
990 fprintf(stderr
, "%s: tape and disk copies are different\n",
996 #endif /* COMPARE_ONTHEFLY */
998 #if !COMPARE_ONTHEFLY
1000 do_cmpfiles(int fd_tape
, int fd_disk
, long size
)
1002 static char buf_tape
[BUFSIZ
];
1003 static char buf_disk
[BUFSIZ
];
1008 if ((n_tape
= read(fd_tape
, buf_tape
, sizeof(buf_tape
))) < 1) {
1009 close(fd_tape
), close(fd_disk
);
1010 panic("do_cmpfiles: unexpected EOF[1]");
1012 if ((n_disk
= read(fd_disk
, buf_disk
, sizeof(buf_tape
))) < 1) {
1013 close(fd_tape
), close(fd_disk
);
1014 panic("do_cmpfiles: unexpected EOF[2]");
1016 if (n_tape
!= n_disk
) {
1017 close(fd_tape
), close(fd_disk
);
1018 panic("do_cmpfiles: sizes different!");
1020 if (memcmp(buf_tape
, buf_disk
, (size_t)n_tape
) != 0) return (1);
1026 /* for debugging compare problems */
1027 #undef COMPARE_FAIL_KEEP_FILE
1030 #ifdef COMPARE_FAIL_KEEP_FILE
1031 /* return true if tapefile should be unlinked after compare */
1036 cmpfiles(char *tapefile
, char *diskfile
, struct stat
*sbuf_disk
)
1038 struct stat sbuf_tape
;
1039 int fd_tape
, fd_disk
;
1041 if (stat(tapefile
, &sbuf_tape
) != 0) {
1042 panic("Can't lstat tmp file %s: %s\n", tapefile
,
1047 if (sbuf_disk
->st_size
!= sbuf_tape
.st_size
) {
1049 "%s: size changed from %ld to %ld.\n",
1050 diskfile
, (long)sbuf_tape
.st_size
, (long)sbuf_disk
->st_size
);
1052 #ifdef COMPARE_FAIL_KEEP_FILE
1059 if ((fd_tape
= open(tapefile
, O_RDONLY
)) < 0) {
1060 panic("Can't open %s: %s\n", tapefile
, strerror(errno
));
1063 if ((fd_disk
= open(diskfile
, O_RDONLY
)) < 0) {
1065 panic("Can't open %s: %s\n", diskfile
, strerror(errno
));
1069 if (do_cmpfiles(fd_tape
, fd_disk
, sbuf_tape
.st_size
)) {
1070 fprintf(stderr
, "%s: tape and disk copies are different\n",
1075 #ifdef COMPARE_FAIL_KEEP_FILE
1076 /* rename the file to live in /tmp */
1077 /* rename `tapefile' to /tmp/<basename of diskfile> */
1079 char *p
= strrchr(diskfile
, '/');
1080 char newname
[MAXPATHLEN
];
1082 panic("can't find / in %s\n", diskfile
);
1084 snprintf(newname
, sizeof(newname
), "%s/debug/%s", tmpdir
, p
+ 1);
1085 if (rename(tapefile
, newname
)) {
1086 panic("rename from %s to %s failed: %s\n",
1090 fprintf(stderr
, "*** %s saved to %s\n",
1095 /* don't unlink the file (it's not there anymore */
1104 #ifdef COMPARE_FAIL_KEEP_FILE
1108 #endif /* !COMPARE_ONTHEFLY */
1110 #if !COMPARE_ONTHEFLY
1111 static char tmpfilename
[MAXPATHLEN
];
1115 comparefile(char *name
)
1120 #if !COMPARE_ONTHEFLY
1121 static char *tmpfile
= NULL
;
1125 if ((r
= lstat(name
, &sb
)) != 0) {
1126 warn("%s: does not exist (%d)", name
, r
);
1132 curfile
.name
= name
;
1133 curfile
.action
= USING
;
1134 mode
= curfile
.dip
->di_mode
;
1136 Vprintf(stdout
, "comparing %s (size: %ld, mode: 0%o)\n", name
,
1137 (long)sb
.st_size
, mode
);
1139 if (sb
.st_mode
!= mode
) {
1140 fprintf(stderr
, "%s: mode changed from 0%o to 0%o.\n",
1141 name
, mode
& 07777, sb
.st_mode
& 07777);
1144 switch (mode
& IFMT
) {
1158 char lbuf
[MAXPATHLEN
+ 1];
1161 if (!(sb
.st_mode
& S_IFLNK
)) {
1162 fprintf(stderr
, "%s: is no longer a symbolic link\n",
1169 getfile(xtrlnkfile
, xtrlnkskip
);
1172 "%s: zero length symbolic link (ignored)\n",
1177 if ((lsize
= readlink(name
, lbuf
, MAXPATHLEN
)) < 0) {
1178 panic("readlink of %s failed: %s", name
,
1183 if (strcmp(lbuf
, lnkbuf
) != 0) {
1185 "%s: symbolic link changed from %s to %s.\n",
1186 name
, lnkbuf
, lbuf
);
1195 if (!(sb
.st_mode
& (S_IFCHR
|S_IFBLK
))) {
1196 fprintf(stderr
, "%s: no longer a special file\n",
1203 if (sb
.st_rdev
!= (int)curfile
.dip
->di_rdev
) {
1205 "%s: device changed from %d,%d to %d,%d.\n",
1207 ((int)curfile
.dip
->di_rdev
>> 8) & 0xff,
1208 (int)curfile
.dip
->di_rdev
& 0xff,
1209 ((int)sb
.st_rdev
>> 8) & 0xff,
1210 (int)sb
.st_rdev
& 0xff);
1217 #if COMPARE_ONTHEFLY
1218 if ((ifile
= open(name
, O_RDONLY
)) < 0) {
1219 panic("Can't open %s: %s\n", name
, strerror(errno
));
1225 getfile(xtrcmpfile
, xtrcmpskip
);
1228 if (read(ifile
, &c
, 1) != 0) {
1229 fprintf(stderr
, "%s: size has changed.\n",
1239 if (tmpfile
== NULL
) {
1240 /* argument to mktemp() must not be in RO space: */
1241 snprintf(tmpfilename
, sizeof(tmpfilename
), "%s/restoreCXXXXXX", tmpdir
);
1242 tmpfile
= mktemp(&tmpfilename
[0]);
1244 if ((stat(tmpfile
, &stemp
) == 0) && (unlink(tmpfile
) != 0)) {
1245 panic("cannot delete tmp file %s: %s\n",
1246 tmpfile
, strerror(errno
));
1248 if ((ofile
= open(tmpfile
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0600)) < 0) {
1249 panic("cannot create file temp file %s: %s\n",
1250 name
, strerror(errno
));
1252 getfile(xtrfile
, xtrskip
);
1253 (void) close(ofile
);
1254 #ifdef COMPARE_FAIL_KEEP_FILE
1255 if (cmpfiles(tmpfile
, name
, &sb
))
1258 cmpfiles(tmpfile
, name
, &sb
);
1261 #endif /* COMPARE_ONTHEFLY */
1268 static void (*readtape_func
)(char *) = readtape_set
;
1271 * Read TP_BSIZE blocks from the input.
1272 * Handle read errors, and end of media.
1273 * Decompress compressed blocks.
1278 (*readtape_func
)(buf
); /* call the actual processing routine */
1282 * Set function pointer for readtape() routine. zflag and magtapein must
1283 * be correctly set before the first call to readtape().
1286 readtape_set(char *buf
)
1289 readtape_func
= readtape_uncompr
;
1292 readtape_func
= readtape_comprtape
;
1294 readtape_func
= readtape_comprfile
;
1299 #endif /* HAVE_ZLIB */
1302 * This is the original readtape(), it's used for reading uncompressed input.
1303 * Read TP_BSIZE blocks from the input.
1304 * Handle read errors, and end of media.
1308 readtape_uncompr(char *buf
)
1313 ssize_t rd
, newvol
, i
;
1314 int cnt
, seek_failed
;
1316 if (blkcnt
< numtrec
) {
1317 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1323 for (i
= 0; i
< ntrec
; i
++)
1324 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1327 cnt
= ntrec
* TP_BSIZE
;
1334 i
= rmtread(&tapebuf
[rd
], cnt
);
1337 i
= read(mt
, &tapebuf
[rd
], cnt
);
1340 * Check for mid-tape short read error.
1341 * If found, skip rest of buffer and start with the next.
1343 if (!pipein
&& numtrec
< ntrec
&& i
> 0) {
1344 Dprintf(stdout
, "mid-media short read error.\n");
1348 * Handle partial block read.
1350 if (pipein
&& i
== 0 && rd
> 0)
1352 else if (i
> 0 && i
!= ntrec
* TP_BSIZE
) {
1361 * Short read. Process the blocks read.
1363 if (i
% TP_BSIZE
!= 0)
1365 "partial block read: %ld should be %ld\n",
1366 (long)i
, ntrec
* TP_BSIZE
);
1367 numtrec
= i
/ TP_BSIZE
;
1371 * Handle read error.
1374 fprintf(stderr
, "Tape read error while ");
1375 switch (curfile
.action
) {
1377 fprintf(stderr
, "trying to set up tape\n");
1380 fprintf(stderr
, "trying to resynchronize\n");
1383 fprintf(stderr
, "restoring %s\n", curfile
.name
);
1386 fprintf(stderr
, "skipping over inode %lu\n",
1387 (unsigned long)curfile
.ino
);
1390 if (!yflag
&& !reply("continue"))
1392 i
= ntrec
* TP_BSIZE
;
1393 memset(tapebuf
, 0, (size_t)i
);
1396 seek_failed
= (rmtseek(i
, 1) < 0);
1399 seek_failed
= (lseek(mt
, i
, SEEK_CUR
) == (off_t
)-1);
1402 warn("continuation failed");
1403 if (!yflag
&& !reply("assume end-of-tape and continue"))
1409 * Handle end of tape.
1412 Vprintf(stdout
, "End-of-tape encountered\n");
1421 if (rd
% TP_BSIZE
!= 0)
1422 panic("partial block read: %d should be %d\n",
1423 rd
, ntrec
* TP_BSIZE
);
1425 memmove(&tapebuf
[rd
], &endoftapemark
, TP_BSIZE
);
1428 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1436 * Read a compressed format block from a file or pipe and uncompress it.
1437 * Attempt to handle read errors, and end of file.
1440 readtape_comprfile(char *buf
)
1442 long rl
, size
, i
, ret
;
1444 struct tapebuf
*tpb
;
1446 if (blkcnt
< numtrec
) {
1447 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1452 /* need to read the next block */
1454 for (i
= 0; i
< ntrec
; i
++)
1455 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1457 tpb
= (struct tapebuf
*) tapebuf
;
1459 /* read the block prefix */
1460 ret
= read_a_block(mt
, tapebuf
, PREFIXSIZE
, &rl
);
1466 if (size
> bufsize
) {
1467 /* something's wrong */
1468 Vprintf(stdout
, "Prefix size error, max size %d, got %ld\n",
1471 tpb
->length
= bufsize
;
1473 ret
= read_a_block(mt
, tpb
->buf
, size
, &rl
);
1477 tbufptr
= decompress_tapebuf(tpb
, rl
+ PREFIXSIZE
);
1478 if (tbufptr
== NULL
) {
1479 msg_read_error("File decompression error while");
1480 if (!yflag
&& !reply("continue"))
1482 memset(tapebuf
, 0, bufsize
);
1487 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1493 /* Errors while reading from a file or pipe are catastrophic. Since
1494 * there are no block boundaries, it's impossible to bypass the
1495 * block in error and find the start of the next block.
1498 /* It's possible to have multiple input files using -M
1499 * and -f file1,file2...
1501 Vprintf(stdout
, "End-of-File encountered\n");
1511 msg_read_error("Read error while");
1512 /* if (!yflag && !reply("continue")) */
1517 * Read compressed data from a tape and uncompress it.
1518 * Handle read errors, and end of media.
1519 * Since a tape consists of separate physical blocks, we try
1520 * to recover from errors by repositioning the tape to the next
1524 readtape_comprtape(char *buf
)
1528 struct tapebuf
*tpb
;
1531 if (blkcnt
< numtrec
) {
1532 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1537 /* need to read the next block */
1539 for (i
= 0; i
< ntrec
; i
++)
1540 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1542 tpb
= (struct tapebuf
*) tapebuf
;
1544 /* read the block */
1545 size
= bufsize
+ PREFIXSIZE
;
1546 ret
= read_a_block(mt
, tapebuf
, size
, &rl
);
1550 tbufptr
= decompress_tapebuf(tpb
, rl
);
1551 if (tbufptr
== NULL
) {
1552 msg_read_error("Tape decompression error while");
1553 if (!yflag
&& !reply("continue"))
1555 memset(tapebuf
, 0, PREFIXSIZE
+ bufsize
);
1561 /* Handle errors: EOT switches to the next volume, other errors
1562 * attempt to position the tape to the next block.
1565 Vprintf(stdout
, "End-of-tape encountered\n");
1574 msg_read_error("Tape read error while");
1575 if (!yflag
&& !reply("continue"))
1577 memset(tapebuf
, 0, PREFIXSIZE
+ bufsize
);
1582 rl
= rmtioctl(MTFSR
, 1);
1588 rl
= ioctl(mt
, MTIOCTOP
, &tcom
);
1592 warn("continuation failed");
1593 if (!yflag
&& !reply("assume end-of-tape and continue"))
1595 ret
= 0; /* end of tape */
1601 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1607 * Decompress a struct tapebuf into a buffer. readsize is the size read
1608 * from the tape/file and is used for error messages. Returns a pointer
1609 * to the location of the uncompressed buffer or NULL on errors.
1610 * Adjust numtrec and complain for a short block.
1613 decompress_tapebuf(struct tapebuf
*tpbin
, int readsize
)
1615 /* If zflag is on, all blocks have a struct tapebuf prefix */
1616 /* zflag gets set in setup() from the dump header */
1617 int cresult
, blocklen
;
1618 unsigned long worklen
;
1619 char *output
= NULL
,*reason
= NULL
, *lengtherr
= NULL
;
1621 /* build a length error message */
1622 blocklen
= tpbin
->length
;
1623 if (readsize
< blocklen
+ PREFIXSIZE
)
1624 lengtherr
= "short";
1626 if (readsize
> blocklen
+ PREFIXSIZE
)
1631 if (tpbin
->compressed
) {
1632 /* uncompress whatever we read, if it fails, complain later */
1633 cresult
= uncompress(comprbuf
, &worklen
, tpbin
->buf
, blocklen
);
1637 output
= tpbin
->buf
;
1642 if (worklen
!= ntrec
* TP_BSIZE
) {
1643 /* short block, shouldn't happen, but... */
1644 reason
= "length mismatch";
1645 if (worklen
% TP_BSIZE
== 0)
1646 numtrec
= worklen
/ TP_BSIZE
;
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 set the blocksize from its length. Test
1699 * if the block looks like a compressed dump tape. setup() will make
1700 * the final 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 will not be compressed.
1707 findtapeblksize(void)
1711 struct tapebuf
*tpb
= (struct tapebuf
*) tapebuf
;
1712 struct s_spcl
*spclpt
= (struct s_spcl
*) tpb
->buf
;
1714 for (i
= 0; i
< ntrec
; i
++)
1715 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1719 * For a pipe or file, read in the first record. For a tape, read
1722 len
= magtapein
? bufsize
+ PREFIXSIZE
: TP_BSIZE
;
1724 if (read_a_block(mt
, tapebuf
, len
, &i
) <= 0)
1725 errx(1, "Tape read error on first record");
1728 * If the input is from a file or a pipe, we read TP_BSIZE
1729 * bytes looking for a compressed dump header, we then
1730 * need to read in the rest of the record, as determined by
1731 * tpb->length or bufsize. The first block of the dump is
1732 * guaranteed to not be compressed so we look at the header.
1735 if (tpb
->length
% TP_BSIZE
== 0
1736 && tpb
->length
<= bufsize
1737 && tpb
->compressed
== 0
1738 && spclpt
->c_type
== TS_TAPE
1739 && spclpt
->c_flags
& DR_COMPRESSED
) {
1740 /* Looks like it's a compressed dump block prefix, */
1741 /* read in the rest of the block based on tpb->length. */
1742 len
= tpb
->length
- TP_BSIZE
+ PREFIXSIZE
;
1743 if (read_a_block(mt
, tapebuf
+TP_BSIZE
, len
, &i
) <= 0
1745 errx(1,"Error reading dump file header");
1747 numtrec
= ntrec
= tpb
->length
/ TP_BSIZE
;
1751 /* read in the rest of the block based on bufsize */
1752 len
= bufsize
- TP_BSIZE
;
1753 if (read_a_block(mt
, tapebuf
+TP_BSIZE
, len
, &i
) < 0
1754 || (i
!= len
&& i
% TP_BSIZE
!= 0))
1755 errx(1,"Error reading dump file header");
1759 Vprintf(stdout
, "Input block size is %ld\n", ntrec
);
1764 * If the input is a tape, we tried to read PREFIXSIZE +
1765 * ntrec * TP_BSIZE bytes. If it's not a compressed dump tape
1766 * or the value of ntrec is too large, we have read less than
1767 * what we asked for; adjust the value of ntrec and test for
1768 * a compressed dump tape prefix.
1771 if (i
% TP_BSIZE
!= 0) {
1772 if (i
% TP_BSIZE
== PREFIXSIZE
1773 && tpb
->compressed
== 0
1774 && spclpt
->c_type
== TS_TAPE
1775 && spclpt
->c_flags
& DR_COMPRESSED
) {
1779 if (tpb
->length
> bufsize
)
1780 errx(1, "Tape blocksize is too large, use "
1781 "\'-b %d\' ", tpb
->length
/ TP_BSIZE
);
1784 errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)",
1787 ntrec
= i
/ TP_BSIZE
;
1789 Vprintf(stdout
, "Tape block size is %ld\n", ntrec
);
1793 * Read a block of data handling all of the messy details.
1795 static int read_a_block(int fd
, char *buf
, size_t len
, long *lengthread
)
1803 i
= rmtread(buf
, size
);
1806 i
= read(fd
, buf
, size
);
1809 break; /* EOD or error */
1812 break; /* block at a time for mt */
1815 *lengthread
= len
- size
;
1834 * Read the next block from the tape.
1835 * Check to see if it is one of several vintage headers.
1836 * If it is an old style header, convert it to a new style header.
1837 * If it is not any valid header, return an error.
1840 gethead(struct s_spcl
*buf
)
1848 char dummy
[TP_BSIZE
];
1855 u_int16_t c_inumber
;
1860 u_int16_t odi_nlink
;
1876 readtape((char *)buf
);
1877 if (buf
->c_magic
!= NFS_MAGIC
) {
1878 if (swabi(buf
->c_magic
) != NFS_MAGIC
)
1881 Vprintf(stdout
, "Note: Doing Byte swapping\n");
1885 if (checksum((int *)buf
) == FAIL
)
1888 swabst((u_char
*)"8i4s31i528bi192b2i", (u_char
*)buf
);
1891 readtape((char *)(&u_ospcl
.s_ospcl
));
1892 memset((char *)buf
, 0, (long)TP_BSIZE
);
1893 buf
->c_type
= u_ospcl
.s_ospcl
.c_type
;
1894 buf
->c_date
= u_ospcl
.s_ospcl
.c_date
;
1895 buf
->c_ddate
= u_ospcl
.s_ospcl
.c_ddate
;
1896 buf
->c_volume
= u_ospcl
.s_ospcl
.c_volume
;
1897 buf
->c_tapea
= u_ospcl
.s_ospcl
.c_tapea
;
1898 buf
->c_inumber
= u_ospcl
.s_ospcl
.c_inumber
;
1899 buf
->c_checksum
= u_ospcl
.s_ospcl
.c_checksum
;
1900 buf
->c_magic
= u_ospcl
.s_ospcl
.c_magic
;
1901 buf
->c_dinode
.di_mode
= u_ospcl
.s_ospcl
.c_dinode
.odi_mode
;
1902 buf
->c_dinode
.di_nlink
= u_ospcl
.s_ospcl
.c_dinode
.odi_nlink
;
1903 buf
->c_dinode
.di_uid
= u_ospcl
.s_ospcl
.c_dinode
.odi_uid
;
1904 buf
->c_dinode
.di_gid
= u_ospcl
.s_ospcl
.c_dinode
.odi_gid
;
1905 buf
->c_dinode
.di_size
= u_ospcl
.s_ospcl
.c_dinode
.odi_size
;
1906 buf
->c_dinode
.di_rdev
= u_ospcl
.s_ospcl
.c_dinode
.odi_rdev
;
1908 buf
->c_dinode
.di_atime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1909 buf
->c_dinode
.di_mtime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1910 buf
->c_dinode
.di_ctime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1911 #else /* __linux__ */
1912 buf
->c_dinode
.di_atime
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1913 buf
->c_dinode
.di_mtime
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1914 buf
->c_dinode
.di_ctime
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1915 #endif /* __linux__ */
1916 buf
->c_count
= u_ospcl
.s_ospcl
.c_count
;
1917 memmove(buf
->c_addr
, u_ospcl
.s_ospcl
.c_addr
, (long)256);
1918 if (u_ospcl
.s_ospcl
.c_magic
!= OFS_MAGIC
||
1919 checksum((int *)(&u_ospcl
.s_ospcl
)) == FAIL
)
1921 buf
->c_magic
= NFS_MAGIC
;
1924 if ((buf
->c_dinode
.di_size
== 0 || buf
->c_dinode
.di_size
> 0xfffffff) &&
1925 (buf
->c_dinode
.di_mode
& IFMT
) == IFDIR
&& Qcvt
== 0) {
1926 qcvt
.qval
= buf
->c_dinode
.di_size
;
1927 if (qcvt
.val
[0] || qcvt
.val
[1]) {
1928 printf("Note: Doing Quad swapping\n");
1933 qcvt
.qval
= buf
->c_dinode
.di_size
;
1935 qcvt
.val
[1] = qcvt
.val
[0];
1937 buf
->c_dinode
.di_size
= qcvt
.qval
;
1941 switch (buf
->c_type
) {
1946 * Have to patch up missing information in bit map headers
1949 buf
->c_dinode
.di_size
= buf
->c_count
* TP_BSIZE
;
1950 if (buf
->c_count
> TP_NINDIR
)
1953 for (i
= 0; i
< buf
->c_count
; i
++)
1958 if ((buf
->c_flags
& DR_NEWINODEFMT
) == 0)
1970 panic("gethead: unknown inode type %d\n", buf
->c_type
);
1974 * If we are restoring a filesystem with old format inodes,
1975 * copy the uid/gid to the new location.
1978 buf
->c_dinode
.di_uid
= buf
->c_dinode
.di_ouid
;
1979 buf
->c_dinode
.di_gid
= buf
->c_dinode
.di_ogid
;
1987 * Check that a header is where it belongs and predict the next header
1990 accthdr(struct s_spcl
*header
)
1992 static dump_ino_t previno
= 0x7fffffff;
1993 static int prevtype
;
1994 static long predict
;
1997 if (header
->c_type
== TS_TAPE
) {
1998 fprintf(stderr
, "Volume header (%s inode format) ",
1999 oldinofmt
? "old" : "new");
2000 if (header
->c_firstrec
)
2001 fprintf(stderr
, "begins with record %d",
2002 header
->c_firstrec
);
2003 fprintf(stderr
, "\n");
2004 previno
= 0x7fffffff;
2007 if (previno
== 0x7fffffff)
2011 fprintf(stderr
, "Dumped inodes map header");
2014 fprintf(stderr
, "Used inodes map header");
2017 fprintf(stderr
, "File header, ino %lu", (unsigned long)previno
);
2020 fprintf(stderr
, "File continuation header, ino %ld", (long)previno
);
2023 fprintf(stderr
, "End of tape header");
2026 if (predict
!= blksread
- 1)
2027 fprintf(stderr
, "; predicted %ld blocks, got %ld blocks",
2028 predict
, blksread
- 1);
2029 fprintf(stderr
, "\n");
2032 if (header
->c_type
!= TS_END
)
2033 for (i
= 0; i
< header
->c_count
; i
++)
2034 if (readmapflag
|| header
->c_addr
[i
] != 0)
2038 prevtype
= header
->c_type
;
2039 previno
= header
->c_inumber
;
2043 * Find an inode header.
2044 * Complain if had to skip, and complain is set.
2047 findinode(struct s_spcl
*header
)
2049 static long skipcnt
= 0;
2053 curfile
.name
= "<name unknown>";
2054 curfile
.action
= UNKNOWN
;
2058 if (header
->c_magic
!= NFS_MAGIC
) {
2060 while (gethead(header
) == FAIL
||
2061 header
->c_date
!= dumpdate
)
2064 switch (header
->c_type
) {
2068 * Skip up to the beginning of the next record
2070 for (i
= 0; i
< header
->c_count
; i
++)
2071 if (header
->c_addr
[i
])
2073 while (gethead(header
) == FAIL
||
2074 header
->c_date
!= dumpdate
)
2079 curfile
.dip
= &header
->c_dinode
;
2080 curfile
.ino
= header
->c_inumber
;
2084 curfile
.ino
= maxino
;
2088 curfile
.name
= "<file removal list>";
2092 curfile
.name
= "<file dump list>";
2096 panic("unexpected tape header\n");
2100 panic("unknown tape header type %d\n", spcl
.c_type
);
2104 } while (header
->c_type
== TS_ADDR
);
2109 fprintf(stderr
, "resync restore, skipped %ld blocks\n",
2119 j
= sizeof(union u_spcl
) / sizeof(int);
2126 /* What happens if we want to read restore tapes
2127 for a 16bit int machine??? */
2133 if (i
!= CHECKSUM
) {
2134 fprintf(stderr
, "Checksum error %o, inode %lu file %s\n", i
,
2135 (unsigned long)curfile
.ino
, curfile
.name
);
2145 #include <varargs.h>
2150 msg(const char *fmt
, ...)
2163 (void)vfprintf(stderr
, fmt
, ap
);
2166 #endif /* RRESTORE */
2169 swab16(u_char
*sp
, int n
)
2174 c
= sp
[0]; sp
[0] = sp
[1]; sp
[1] = c
;
2181 swab32(u_char
*sp
, int n
)
2186 c
= sp
[0]; sp
[0] = sp
[3]; sp
[3] = c
;
2187 c
= sp
[1]; sp
[1] = sp
[2]; sp
[2] = c
;
2194 swab64(u_char
*sp
, int n
)
2199 c
= sp
[0]; sp
[0] = sp
[7]; sp
[7] = c
;
2200 c
= sp
[1]; sp
[1] = sp
[6]; sp
[6] = c
;
2201 c
= sp
[2]; sp
[2] = sp
[5]; sp
[5] = c
;
2202 c
= sp
[3]; sp
[3] = sp
[4]; sp
[4] = c
;
2209 swabst(u_char
*cp
, u_char
*sp
)
2215 case '0': case '1': case '2': case '3': case '4':
2216 case '5': case '6': case '7': case '8': case '9':
2217 n
= (n
* 10) + (*cp
++ - '0');
2220 case 's': case 'w': case 'h':
2238 default: /* Any other character, like 'b' counts as byte. */
2252 swabst((u_char
*)"i", (u_char
*)&x
);
2260 swabst((u_char
*)"l", (u_char
*)&x
);
2267 * get the current position of the tape
2270 GetTapePos(long *pos
)
2275 if (ioctl(mt
, MTIOCPOS
, pos
) == -1) {
2277 fprintf(stdout
, "[%ld] error: %d (getting tapepos: %ld)\n",
2278 (unsigned long)getpid(), err
, *pos
);
2284 typedef struct mt_pos
{
2287 } MTPosRec
, *MTPosPtr
;
2290 * go to specified position on tape
2293 GotoTapePos(long pos
)
2300 if (ioctl(mt
, MTIOCTOP
, &buf
) == -1) {
2302 fprintf(stdout
, "[%ld] error: %d (setting tapepos: %ld)\n",
2303 (unsigned long)getpid(), err
, pos
);
2310 * read next data from tape to re-sync
2313 ReReadFromTape(void)
2317 if (gethead(&spcl
) == FAIL
) {
2319 fprintf(stdout
, "DEBUG 1 gethead failed\n");
2327 RequestVol(long tnum
)
2332 #endif /* USE_QFA */