]>
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 1.29 2001/03/20 10:02:48 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"
85 static long fssize
= MAXBSIZE
;
87 static int pipein
= 0;
88 static int magtapein
= 0; /* input is from magtape */
89 static char magtape
[MAXPATHLEN
];
90 static char magtapeprefix
[MAXPATHLEN
];
93 static char *tapebuf
; /* input buffer for read */
94 static int bufsize
; /* buffer size without prefix */
95 static char *tbufptr
= NULL
; /* active tape buffer */
97 static char *comprbuf
; /* uncompress work buf */
98 static size_t comprlen
; /* size including prefix */
100 static union u_spcl endoftapemark
;
101 static long blksread
; /* blocks read since last header */
102 static long tpblksread
= 0; /* TP_BSIZE blocks read */
103 static long tapesread
;
104 static sigjmp_buf restart
;
105 static int gettingfile
= 0; /* restart has a valid frame */
106 static char *host
= NULL
;
110 static char lnkbuf
[MAXPATHLEN
+ 1];
113 int oldinofmt
; /* old inode format conversion required */
114 int Bcvt
; /* Swap Bytes (for CCI or sun) */
115 static int Qcvt
; /* Swap quads (for sun) */
117 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
119 static void accthdr
__P((struct s_spcl
*));
120 static int checksum
__P((int *));
121 static void findinode
__P((struct s_spcl
*));
122 static void findtapeblksize
__P((void));
123 static int gethead
__P((struct s_spcl
*));
124 static void readtape
__P((char *));
125 static void setdumpnum
__P((void));
126 static u_int swabi
__P((u_int
));
128 static u_long swabl
__P((u_long
));
130 static u_char
*swab64
__P((u_char
*, int));
131 static u_char
*swab32
__P((u_char
*, int));
132 static u_char
*swab16
__P((u_char
*, int));
133 static void terminateinput
__P((void));
134 static void xtrfile
__P((char *, size_t));
135 static void xtrlnkfile
__P((char *, size_t));
136 static void xtrlnkskip
__P((char *, size_t));
137 static void xtrmap
__P((char *, size_t));
138 static void xtrmapskip
__P((char *, size_t));
139 static void xtrskip
__P((char *, size_t));
142 static void newcomprbuf
__P((long));
143 static void readtape_set
__P((char *));
144 static void readtape_uncompr
__P((char *));
145 static void readtape_comprfile
__P((char *));
146 static void readtape_comprtape
__P((char *));
147 static char *decompress_tapebuf
__P((struct tapebuf
*, int));
148 static void msg_read_error
__P((char *));
150 static int read_a_block
__P((int, void *, size_t, long *));
151 #define PREFIXSIZE sizeof(struct tapebuf)
153 #define COMPARE_ONTHEFLY 1
156 static int ifile
; /* input file for compare */
157 static int cmperror
; /* compare error */
158 static void xtrcmpfile
__P((char *, size_t));
159 static void xtrcmpskip
__P((char *, size_t));
162 static int readmapflag
;
165 * Set up an input source. This is called from main.c before setup() is.
168 setinput(char *source
)
174 newtapebuf(NTREC
> HIGHDENSITYTREC
? NTREC
: HIGHDENSITYTREC
);
178 if (strchr(source
, ':')) {
180 source
= strchr(host
, ':');
182 if (rmthost(host
) == 0)
186 if (strcmp(source
, "-") == 0) {
188 * Since input is coming from a pipe we must establish
189 * our own connection to the terminal.
191 terminal
= fopen(_PATH_TTY
, "r");
192 if (terminal
== NULL
) {
193 warn("cannot open %s", _PATH_TTY
);
194 terminal
= fopen(_PATH_DEVNULL
, "r");
195 if (terminal
== NULL
)
196 err(1, "cannot open %s", _PATH_DEVNULL
);
200 setuid(getuid()); /* no longer need or want root privileges */
202 strncpy(magtapeprefix
, source
, MAXPATHLEN
);
203 magtapeprefix
[MAXPATHLEN
-1] = '\0';
204 snprintf(magtape
, MAXPATHLEN
, "%s%03d", source
, 1);
207 strncpy(magtape
, source
, MAXPATHLEN
);
208 magtape
[MAXPATHLEN
- 1] = '\0';
212 newtapebuf(long size
)
214 static int tapebufsize
= -1;
217 bufsize
= ntrec
* TP_BSIZE
;
218 if (size
<= tapebufsize
)
222 tapebuf
= malloc(size
* TP_BSIZE
+ sizeof(struct tapebuf
));
224 errx(1, "Cannot allocate space for tape buffer");
230 newcomprbuf(long size
)
232 if (size
<= comprlen
)
234 comprlen
= size
+ sizeof(struct tapebuf
);
235 if (comprbuf
!= NULL
)
237 comprbuf
= malloc(comprlen
);
238 if (comprbuf
== NULL
)
239 errx(1, "Cannot allocate space for decompress buffer");
241 #endif /* HAVE_ZLIB */
244 * Verify that the tape drive can be accessed and
245 * that it actually is a dump tape.
252 struct mtget mt_stat
;
254 Vprintf(stdout
, "Verify tape and initialize maps\n");
257 mt
= rmtopen(magtape
, 0);
263 mt
= open(magtape
, O_RDONLY
, 0);
265 err(1, "%s", magtape
);
268 /* need to know if input is really from a tape */
271 magtapein
= rmtioctl(MTNOP
, 1) != -1;
274 magtapein
= ioctl(mt
, MTIOCGET
, (char *) &mt_stat
) == 0;
277 Vprintf(stdout
,"Input is from %s\n", magtapein
? "tape": "file/pipe");
281 if (gethead(&spcl
) == FAIL
) {
282 blkcnt
--; /* push back this block */
286 if (gethead(&spcl
) == FAIL
)
287 errx(1, "Tape is not a dump tape");
288 fprintf(stderr
, "Converting to new file system format.\n");
292 fprintf(stderr
, "Dump tape is compressed.\n");
294 newcomprbuf(bufsize
);
296 errx(1,"This restore version doesn't support decompression");
297 #endif /* HAVE_ZLIB */
300 endoftapemark
.s_spcl
.c_magic
= cvtflag
? OFS_MAGIC
: NFS_MAGIC
;
301 endoftapemark
.s_spcl
.c_type
= TS_END
;
302 ip
= (int *)&endoftapemark
;
303 j
= sizeof(union u_spcl
) / sizeof(int);
308 endoftapemark
.s_spcl
.c_checksum
= CHECKSUM
- i
;
310 if (vflag
|| command
== 't' || command
== 'C')
312 if (filesys
[0] == '\0') {
314 strncpy(filesys
, spcl
.c_filesys
, NAMELEN
);
315 filesys
[NAMELEN
- 1] = '\0';
316 dirptr
= strstr(filesys
, " (dir");
320 dumptime
= spcl
.c_ddate
;
321 dumpdate
= spcl
.c_date
;
322 if (stat(".", &stbuf
) < 0)
323 err(1, "cannot stat .");
324 if (stbuf
.st_blksize
> 0 && stbuf
.st_blksize
< TP_BSIZE
)
326 if (stbuf
.st_blksize
>= TP_BSIZE
&& stbuf
.st_blksize
<= MAXBSIZE
)
327 fssize
= stbuf
.st_blksize
;
328 if (((fssize
- 1) & fssize
) != 0)
329 errx(1, "bad block size %ld", fssize
);
330 if (spcl
.c_volume
!= 1)
331 errx(1, "Tape is not volume 1 of the dump");
332 if (gethead(&spcl
) == FAIL
) {
333 Dprintf(stdout
, "header read failed at %ld blocks\n", (long)blksread
);
334 panic("no header after volume mark!\n");
337 if (spcl
.c_type
!= TS_CLRI
)
338 errx(1, "Cannot find file removal list");
339 maxino
= (spcl
.c_count
* TP_BSIZE
* NBBY
) + 1;
340 Dprintf(stdout
, "maxino = %ld\n", (long)maxino
);
341 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
343 errx(1, "no memory for active inode map");
345 curfile
.action
= USING
;
346 getfile(xtrmap
, xtrmapskip
);
347 if (spcl
.c_type
!= TS_BITS
)
348 errx(1, "Cannot find file dump list");
349 map
= calloc((unsigned)1, (unsigned)howmany(maxino
, NBBY
));
350 if (map
== (char *)NULL
)
351 errx(1, "no memory for file dump list");
353 curfile
.action
= USING
;
354 getfile(xtrmap
, xtrmapskip
);
356 * If there may be whiteout entries on the tape, pretend that the
357 * whiteout inode exists, so that the whiteout entries can be
361 SETINO(WINO
, dumpmap
);
365 * Prompt user to load a new dump volume.
366 * "Nextvol" is the next suggested volume to use.
367 * This suggested volume is enforced when doing full
368 * or incremental restores, but can be overridden by
369 * the user when only extracting a subset of the files.
374 long newvol
= 0, savecnt
= 0, wantnext
= 0, i
;
375 union u_spcl tmpspcl
;
376 # define tmpbuf tmpspcl.s_spcl
386 panic("Changing volumes on pipe input?\n");
394 exit(1); /* pipes do not get a second chance */
395 if (command
== 'R' || command
== 'r' || curfile
.action
!= SKIP
) {
402 while (newvol
<= 0) {
403 if (tapesread
== 0) {
404 fprintf(stderr
, "%s%s%s%s%s",
405 "You have not read any tapes yet.\n",
406 "Unless you know which volume your",
407 " file(s) are on you should start\n",
408 "with the last volume and work",
409 " towards the first.\n");
411 fprintf(stderr
, "You have read volumes");
413 for (i
= 1; i
< 32; i
++)
414 if (tapesread
& (1 << i
)) {
415 fprintf(stderr
, "%s%ld", buf
, (long)i
);
418 fprintf(stderr
, "\n");
421 fprintf(stderr
, "Specify next volume #: ");
422 (void) fflush(stderr
);
423 (void) fgets(buf
, TP_BSIZE
, terminal
);
424 } while (!feof(terminal
) && buf
[0] == '\n');
430 "Volume numbers are positive numerics\n");
433 if (newvol
== volno
) {
434 tapesread
|= 1 << volno
;
439 snprintf(magtape
, MAXPATHLEN
, "%s%03ld", magtapeprefix
, newvol
);
440 magtape
[MAXPATHLEN
- 1] = '\0';
442 if (!Mflag
|| haderror
) {
444 fprintf(stderr
, "Mount tape volume %ld\n", (long)newvol
);
445 fprintf(stderr
, "Enter ``none'' if there are no more tapes\n");
446 fprintf(stderr
, "otherwise enter tape name (default: %s) ", magtape
);
447 (void) fflush(stderr
);
448 (void) fgets(buf
, TP_BSIZE
, terminal
);
451 if (!strcmp(buf
, "none\n")) {
455 if (buf
[0] != '\n') {
456 (void) strcpy(magtape
, buf
);
457 magtape
[strlen(magtape
) - 1] = '\0';
462 mt
= rmtopen(magtape
, 0);
465 mt
= open(magtape
, O_RDONLY
, 0);
468 fprintf(stderr
, "Cannot open %s\n", magtape
);
477 if (gethead(&tmpbuf
) == FAIL
) {
478 Dprintf(stdout
, "header read failed at %ld blocks\n", (long)blksread
);
479 fprintf(stderr
, "tape is not dump tape\n");
484 if (tmpbuf
.c_volume
!= volno
) {
485 fprintf(stderr
, "Wrong volume (%d)\n", tmpbuf
.c_volume
);
490 if (tmpbuf
.c_date
!= dumpdate
|| tmpbuf
.c_ddate
!= dumptime
) {
491 fprintf(stderr
, "Wrong dump date\n\tgot: %s",
492 ctime4(&tmpbuf
.c_date
));
493 fprintf(stderr
, "\twanted: %s", ctime(&dumpdate
));
498 tapesread
|= 1 << volno
;
501 * If continuing from the previous volume, skip over any
502 * blocks read already at the end of the previous volume.
504 * If coming to this volume at random, skip to the beginning
505 * of the next record.
507 Dprintf(stdout
, "read %ld recs, tape starts with %ld\n",
508 tpblksread
, (long)tmpbuf
.c_firstrec
);
509 if (tmpbuf
.c_type
== TS_TAPE
&& (tmpbuf
.c_flags
& DR_NEWHEADER
)) {
511 tpblksread
= tmpbuf
.c_firstrec
;
512 for (i
= tmpbuf
.c_count
; i
> 0; i
--)
514 } else if (tmpbuf
.c_firstrec
> 0 &&
515 tmpbuf
.c_firstrec
< tpblksread
- 1) {
517 * -1 since we've read the volume header
519 i
= tpblksread
- tmpbuf
.c_firstrec
- 1;
520 Dprintf(stderr
, "Skipping %ld duplicate record%s.\n",
521 (long)i
, i
> 1 ? "s" : "");
526 if (curfile
.action
== USING
) {
528 panic("active file into volume 1\n");
532 * Skip up to the beginning of the next record
534 if (tmpbuf
.c_type
== TS_TAPE
&& (tmpbuf
.c_flags
& DR_NEWHEADER
))
535 for (i
= tmpbuf
.c_count
; i
> 0; i
--)
537 (void) gethead(&spcl
);
541 siglongjmp(restart
, 1);
546 * Handle unexpected EOF.
552 if (gettingfile
&& curfile
.action
== USING
) {
553 printf("Warning: %s %s\n",
554 "End-of-input encountered while extracting", curfile
.name
);
556 curfile
.name
= "<name unknown>";
557 curfile
.action
= UNKNOWN
;
559 curfile
.ino
= maxino
;
562 siglongjmp(restart
, 1);
567 * handle multiple dumps per tape by skipping forward to the
575 if (dumpnum
== 1 || volno
!= 1)
578 errx(1, "Cannot have multiple dumps on pipe input");
580 tcom
.mt_count
= dumpnum
- 1;
583 rmtioctl(MTFSF
, dumpnum
- 1);
586 if (ioctl(mt
, (int)MTIOCTOP
, (char *)&tcom
) < 0)
593 fprintf(stdout
, "Dump date: %s", ctime4(&spcl
.c_date
));
594 fprintf(stdout
, "Dumped from: %s",
595 (spcl
.c_ddate
== 0) ? "the epoch\n" : ctime4(&spcl
.c_ddate
));
596 if (spcl
.c_host
[0] == '\0')
598 fprintf(stdout
, "Level %d dump of %s on %s:%s\n",
599 spcl
.c_level
, spcl
.c_filesys
, spcl
.c_host
, spcl
.c_dev
);
600 fprintf(stdout
, "Label: %s\n", spcl
.c_label
);
604 extractfile(char *name
)
608 struct timeval timep
[2];
612 curfile
.action
= USING
;
614 timep
[0].tv_sec
= curfile
.dip
->di_atime
.tv_sec
;
615 timep
[0].tv_usec
= curfile
.dip
->di_atime
.tv_usec
;
616 timep
[1].tv_sec
= curfile
.dip
->di_mtime
.tv_sec
;
617 timep
[1].tv_usec
= curfile
.dip
->di_mtime
.tv_usec
;
618 #else /* __linux__ */
619 timep
[0].tv_sec
= curfile
.dip
->di_atime
;
620 timep
[0].tv_usec
= curfile
.dip
->di_atimensec
/ 1000;
621 timep
[1].tv_sec
= curfile
.dip
->di_mtime
;
622 timep
[1].tv_usec
= curfile
.dip
->di_mtimensec
/ 1000;
623 #endif /* __linux__ */
624 mode
= curfile
.dip
->di_mode
;
625 flags
= curfile
.dip
->di_flags
;
626 switch (mode
& IFMT
) {
629 fprintf(stderr
, "%s: unknown file mode 0%o\n", name
, mode
);
634 Vprintf(stdout
, "skipped socket %s\n", name
);
640 ep
= lookupname(name
);
641 if (ep
== NULL
|| ep
->e_flags
& EXTRACT
)
642 panic("unextracted directory %s\n", name
);
646 Vprintf(stdout
, "extract file %s\n", name
);
647 return (genliteraldir(name
, curfile
.ino
));
652 uid_t luid
= curfile
.dip
->di_uid
;
653 gid_t lgid
= curfile
.dip
->di_gid
;
657 getfile(xtrlnkfile
, xtrlnkskip
);
660 "%s: zero length symbolic link (ignored)\n", name
);
663 if (linkit(lnkbuf
, name
, SYMLINK
) == FAIL
)
666 (void) lchown(name
, luid
, lgid
);
672 Vprintf(stdout
, "extract fifo %s\n", name
);
679 if (mkfifo(name
, mode
) < 0) {
680 warn("%s: cannot create fifo", name
);
684 (void) chown(name
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
685 (void) chmod(name
, mode
);
688 (void) fsetflags(name
, flags
);
690 (void) chflags(name
, flags
);
698 Vprintf(stdout
, "extract special file %s\n", name
);
705 if (mknod(name
, mode
, (int)curfile
.dip
->di_rdev
) < 0) {
706 warn("%s: cannot create special file", name
);
710 (void) chown(name
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
711 (void) chmod(name
, mode
);
715 warn("%s: fsetflags called on a special file", name
);
716 (void) fsetflags(name
, flags
);
719 (void) chflags(name
, flags
);
726 Vprintf(stdout
, "extract file %s\n", name
);
733 if ((ofile
= open(name
, O_WRONLY
| O_CREAT
| O_TRUNC
,
735 warn("%s: cannot create file", name
);
739 (void) fchown(ofile
, curfile
.dip
->di_uid
, curfile
.dip
->di_gid
);
740 (void) fchmod(ofile
, mode
);
743 (void) setflags(ofile
, flags
);
745 (void) fchflags(ofile
, flags
);
747 getfile(xtrfile
, xtrskip
);
756 * skip over bit maps on the tape
762 while (spcl
.c_type
== TS_BITS
|| spcl
.c_type
== TS_CLRI
)
767 * skip over a file on the tape
773 curfile
.action
= SKIP
;
774 getfile(xtrnull
, xtrnull
);
778 * Extract a file from the tape.
779 * When an allocated block is found it is passed to the fill function;
780 * when an unallocated block (hole) is found, a zeroed buffer is passed
781 * to the skip function.
784 getfile(void (*fill
) __P((char *, size_t)), void (*skip
) __P((char *, size_t)))
787 volatile int curblk
= 0;
788 volatile quad_t size
= spcl
.c_dinode
.di_size
;
789 volatile int last_write_was_hole
= 0;
790 quad_t origsize
= size
;
791 static char clearedbuf
[MAXBSIZE
];
792 char buf
[MAXBSIZE
/ TP_BSIZE
][TP_BSIZE
];
795 if (spcl
.c_type
== TS_END
)
796 panic("ran off end of tape\n");
797 if (spcl
.c_magic
!= NFS_MAGIC
)
798 panic("not at beginning of a file\n");
799 if (!gettingfile
&& setjmp(restart
) != 0)
803 for (i
= 0; i
< spcl
.c_count
; i
++) {
804 if (readmapflag
|| spcl
.c_addr
[i
]) {
805 readtape(&buf
[curblk
++][0]);
806 if (curblk
== fssize
/ TP_BSIZE
) {
807 (*fill
)((char *)buf
, (size_t)(size
> TP_BSIZE
?
808 fssize
: (curblk
- 1) * TP_BSIZE
+ size
));
810 last_write_was_hole
= 0;
814 (*fill
)((char *)buf
, (size_t)(size
> TP_BSIZE
?
816 (curblk
- 1) * TP_BSIZE
+ size
));
819 (*skip
)(clearedbuf
, (long)(size
> TP_BSIZE
?
821 last_write_was_hole
= 1;
823 if ((size
-= TP_BSIZE
) <= 0) {
824 for (i
++; i
< spcl
.c_count
; i
++)
825 if (readmapflag
|| spcl
.c_addr
[i
])
830 if (gethead(&spcl
) == GOOD
&& size
> 0) {
831 if (spcl
.c_type
== TS_ADDR
)
834 "Missing address (header) block for %s at %ld blocks\n",
835 curfile
.name
, (long)blksread
);
838 (*fill
)((char *)buf
, (size_t)(curblk
* TP_BSIZE
) + size
);
839 last_write_was_hole
= 0;
841 if (last_write_was_hole
) {
842 ftruncate(ofile
, origsize
);
849 * Write out the next block of a file.
852 xtrfile(char *buf
, size_t size
)
857 if (write(ofile
, buf
, (int) size
) == -1)
858 err(1, "write error extracting inode %lu, name %s\nwrite",
859 (unsigned long)curfile
.ino
, curfile
.name
);
863 * Skip over a hole in a file.
867 xtrskip(char *buf
, size_t size
)
870 if (lseek(ofile
, (off_t
)size
, SEEK_CUR
) == -1)
871 err(1, "seek error extracting inode %lu, name %s\nlseek",
872 (unsigned long)curfile
.ino
, curfile
.name
);
876 * Collect the next block of a symbolic link.
879 xtrlnkfile(char *buf
, size_t size
)
883 if (pathlen
> MAXPATHLEN
)
884 errx(1, "symbolic link name: %s->%s%s; too long %d",
885 curfile
.name
, lnkbuf
, buf
, pathlen
);
886 (void) strcat(lnkbuf
, buf
);
890 * Skip over a hole in a symbolic link (should never happen).
894 xtrlnkskip(char *buf
, size_t size
)
897 errx(1, "unallocated block in symbolic link %s", curfile
.name
);
901 * Collect the next block of a bit map.
904 xtrmap(char *buf
, size_t size
)
907 memmove(map
, buf
, size
);
912 * Skip over a hole in a bit map (should never happen).
916 xtrmapskip(char *buf
, size_t size
)
919 panic("hole in map\n");
924 * Noop, when an extraction function is not needed.
928 xtrnull(char *buf
, size_t size
)
936 * Compare the next block of a file.
939 xtrcmpfile(char *buf
, size_t size
)
941 static char cmpbuf
[MAXBSIZE
];
946 if (read(ifile
, cmpbuf
, size
) != size
) {
947 fprintf(stderr
, "%s: size has changed.\n",
953 if (memcmp(buf
, cmpbuf
, size
) != 0) {
954 fprintf(stderr
, "%s: tape and disk copies are different\n",
962 * Skip over a hole in a file.
965 xtrcmpskip(char *buf
, size_t size
)
967 static char cmpbuf
[MAXBSIZE
];
973 if (read(ifile
, cmpbuf
, size
) != size
) {
974 fprintf(stderr
, "%s: size has changed.\n",
980 for (i
= 0; i
< size
; ++i
)
981 if (cmpbuf
[i
] != '\0') {
982 fprintf(stderr
, "%s: tape and disk copies are different\n",
988 #endif /* COMPARE_ONTHEFLY */
990 #if !COMPARE_ONTHEFLY
992 do_cmpfiles(int fd_tape
, int fd_disk
, long size
)
994 static char buf_tape
[BUFSIZ
];
995 static char buf_disk
[BUFSIZ
];
1000 if ((n_tape
= read(fd_tape
, buf_tape
, sizeof(buf_tape
))) < 1) {
1001 close(fd_tape
), close(fd_disk
);
1002 panic("do_cmpfiles: unexpected EOF[1]");
1004 if ((n_disk
= read(fd_disk
, buf_disk
, sizeof(buf_tape
))) < 1) {
1005 close(fd_tape
), close(fd_disk
);
1006 panic("do_cmpfiles: unexpected EOF[2]");
1008 if (n_tape
!= n_disk
) {
1009 close(fd_tape
), close(fd_disk
);
1010 panic("do_cmpfiles: sizes different!");
1012 if (memcmp(buf_tape
, buf_disk
, (size_t)n_tape
) != 0) return (1);
1018 /* for debugging compare problems */
1019 #undef COMPARE_FAIL_KEEP_FILE
1022 #ifdef COMPARE_FAIL_KEEP_FILE
1023 /* return true if tapefile should be unlinked after compare */
1028 cmpfiles(char *tapefile
, char *diskfile
, struct stat
*sbuf_disk
)
1030 struct stat sbuf_tape
;
1031 int fd_tape
, fd_disk
;
1033 if (stat(tapefile
, &sbuf_tape
) != 0) {
1034 panic("Can't lstat tmp file %s: %s\n", tapefile
,
1039 if (sbuf_disk
->st_size
!= sbuf_tape
.st_size
) {
1041 "%s: size changed from %ld to %ld.\n",
1042 diskfile
, (long)sbuf_tape
.st_size
, (long)sbuf_disk
->st_size
);
1044 #ifdef COMPARE_FAIL_KEEP_FILE
1051 if ((fd_tape
= open(tapefile
, O_RDONLY
)) < 0) {
1052 panic("Can't open %s: %s\n", tapefile
, strerror(errno
));
1055 if ((fd_disk
= open(diskfile
, O_RDONLY
)) < 0) {
1057 panic("Can't open %s: %s\n", diskfile
, strerror(errno
));
1061 if (do_cmpfiles(fd_tape
, fd_disk
, sbuf_tape
.st_size
)) {
1062 fprintf(stderr
, "%s: tape and disk copies are different\n",
1067 #ifdef COMPARE_FAIL_KEEP_FILE
1068 /* rename the file to live in /tmp */
1069 /* rename `tapefile' to /tmp/<basename of diskfile> */
1071 char *p
= strrchr(diskfile
, '/');
1072 char newname
[MAXPATHLEN
];
1074 panic("can't find / in %s\n", diskfile
);
1076 snprintf(newname
, sizeof(newname
), "%s/debug/%s", tmpdir
, p
+ 1);
1077 if (rename(tapefile
, newname
)) {
1078 panic("rename from %s to %s failed: %s\n",
1082 fprintf(stderr
, "*** %s saved to %s\n",
1087 /* don't unlink the file (it's not there anymore */
1096 #ifdef COMPARE_FAIL_KEEP_FILE
1100 #endif /* !COMPARE_ONTHEFLY */
1102 #if !COMPARE_ONTHEFLY
1103 static char tmpfilename
[MAXPATHLEN
];
1107 comparefile(char *name
)
1112 #if !COMPARE_ONTHEFLY
1113 static char *tmpfile
= NULL
;
1117 if ((r
= lstat(name
, &sb
)) != 0) {
1118 warn("%s: does not exist (%d)", name
, r
);
1124 curfile
.name
= name
;
1125 curfile
.action
= USING
;
1126 mode
= curfile
.dip
->di_mode
;
1128 Vprintf(stdout
, "comparing %s (size: %ld, mode: 0%o)\n", name
,
1129 (long)sb
.st_size
, mode
);
1131 if (sb
.st_mode
!= mode
) {
1132 fprintf(stderr
, "%s: mode changed from 0%o to 0%o.\n",
1133 name
, mode
& 07777, sb
.st_mode
& 07777);
1136 switch (mode
& IFMT
) {
1150 char lbuf
[MAXPATHLEN
+ 1];
1153 if (!(sb
.st_mode
& S_IFLNK
)) {
1154 fprintf(stderr
, "%s: is no longer a symbolic link\n",
1161 getfile(xtrlnkfile
, xtrlnkskip
);
1164 "%s: zero length symbolic link (ignored)\n",
1169 if ((lsize
= readlink(name
, lbuf
, MAXPATHLEN
)) < 0) {
1170 panic("readlink of %s failed: %s", name
,
1175 if (strcmp(lbuf
, lnkbuf
) != 0) {
1177 "%s: symbolic link changed from %s to %s.\n",
1178 name
, lnkbuf
, lbuf
);
1187 if (!(sb
.st_mode
& (S_IFCHR
|S_IFBLK
))) {
1188 fprintf(stderr
, "%s: no longer a special file\n",
1195 if (sb
.st_rdev
!= (int)curfile
.dip
->di_rdev
) {
1197 "%s: device changed from %d,%d to %d,%d.\n",
1199 ((int)curfile
.dip
->di_rdev
>> 8) & 0xff,
1200 (int)curfile
.dip
->di_rdev
& 0xff,
1201 ((int)sb
.st_rdev
>> 8) & 0xff,
1202 (int)sb
.st_rdev
& 0xff);
1209 #if COMPARE_ONTHEFLY
1210 if ((ifile
= open(name
, O_RDONLY
)) < 0) {
1211 panic("Can't open %s: %s\n", name
, strerror(errno
));
1217 getfile(xtrcmpfile
, xtrcmpskip
);
1220 if (read(ifile
, &c
, 1) != 0) {
1221 fprintf(stderr
, "%s: size has changed.\n",
1231 if (tmpfile
== NULL
) {
1232 /* argument to mktemp() must not be in RO space: */
1233 snprintf(tmpfilename
, sizeof(tmpfilename
), "%s/restoreCXXXXXX", tmpdir
);
1234 tmpfile
= mktemp(&tmpfilename
[0]);
1236 if ((stat(tmpfile
, &stemp
) == 0) && (unlink(tmpfile
) != 0)) {
1237 panic("cannot delete tmp file %s: %s\n",
1238 tmpfile
, strerror(errno
));
1240 if ((ofile
= creat(tmpfile
, 0600)) < 0) {
1241 panic("cannot create file temp file %s: %s\n",
1242 name
, strerror(errno
));
1244 getfile(xtrfile
, xtrskip
);
1245 (void) close(ofile
);
1246 #ifdef COMPARE_FAIL_KEEP_FILE
1247 if (cmpfiles(tmpfile
, name
, &sb
))
1250 cmpfiles(tmpfile
, name
, &sb
);
1253 #endif /* COMPARE_ONTHEFLY */
1260 static void (*readtape_func
)(char *) = readtape_set
;
1263 * Read TP_BSIZE blocks from the input.
1264 * Handle read errors, and end of media.
1265 * Decompress compressed blocks.
1270 (*readtape_func
)(buf
); /* call the actual processing routine */
1274 * Set function pointer for readtape() routine. zflag and magtapein must
1275 * be correctly set before the first call to readtape().
1278 readtape_set(char *buf
)
1281 readtape_func
= readtape_uncompr
;
1284 readtape_func
= readtape_comprtape
;
1286 readtape_func
= readtape_comprfile
;
1291 #endif /* HAVE_ZLIB */
1294 * This is the original readtape(), it's used for reading uncompressed input.
1295 * Read TP_BSIZE blocks from the input.
1296 * Handle read errors, and end of media.
1300 readtape_uncompr(char *buf
)
1305 ssize_t rd
, newvol
, i
;
1306 int cnt
, seek_failed
;
1308 if (blkcnt
< numtrec
) {
1309 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1315 for (i
= 0; i
< ntrec
; i
++)
1316 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1319 cnt
= ntrec
* TP_BSIZE
;
1326 i
= rmtread(&tapebuf
[rd
], cnt
);
1329 i
= read(mt
, &tapebuf
[rd
], cnt
);
1332 * Check for mid-tape short read error.
1333 * If found, skip rest of buffer and start with the next.
1335 if (!pipein
&& numtrec
< ntrec
&& i
> 0) {
1336 Dprintf(stdout
, "mid-media short read error.\n");
1340 * Handle partial block read.
1342 if (pipein
&& i
== 0 && rd
> 0)
1344 else if (i
> 0 && i
!= ntrec
* TP_BSIZE
) {
1353 * Short read. Process the blocks read.
1355 if (i
% TP_BSIZE
!= 0)
1357 "partial block read: %ld should be %ld\n",
1358 (long)i
, ntrec
* TP_BSIZE
);
1359 numtrec
= i
/ TP_BSIZE
;
1363 * Handle read error.
1366 fprintf(stderr
, "Tape read error while ");
1367 switch (curfile
.action
) {
1369 fprintf(stderr
, "trying to set up tape\n");
1372 fprintf(stderr
, "trying to resynchronize\n");
1375 fprintf(stderr
, "restoring %s\n", curfile
.name
);
1378 fprintf(stderr
, "skipping over inode %lu\n",
1379 (unsigned long)curfile
.ino
);
1382 if (!yflag
&& !reply("continue"))
1384 i
= ntrec
* TP_BSIZE
;
1385 memset(tapebuf
, 0, (size_t)i
);
1388 seek_failed
= (rmtseek(i
, 1) < 0);
1391 seek_failed
= (lseek(mt
, i
, SEEK_CUR
) == (off_t
)-1);
1394 warn("continuation failed");
1395 if (!yflag
&& !reply("assume end-of-tape and continue"))
1401 * Handle end of tape.
1404 Vprintf(stdout
, "End-of-tape encountered\n");
1413 if (rd
% TP_BSIZE
!= 0)
1414 panic("partial block read: %d should be %d\n",
1415 rd
, ntrec
* TP_BSIZE
);
1417 memmove(&tapebuf
[rd
], &endoftapemark
, TP_BSIZE
);
1420 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1428 * Read a compressed format block from a file or pipe and uncompress it.
1429 * Attempt to handle read errors, and end of file.
1432 readtape_comprfile(char *buf
)
1434 long rl
, size
, i
, ret
;
1436 struct tapebuf
*tpb
;
1438 if (blkcnt
< numtrec
) {
1439 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1444 /* need to read the next block */
1446 for (i
= 0; i
< ntrec
; i
++)
1447 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1449 tpb
= (struct tapebuf
*) tapebuf
;
1451 /* read the block prefix */
1452 ret
= read_a_block(mt
, tapebuf
, PREFIXSIZE
, &rl
);
1458 if (size
> bufsize
) {
1459 /* something's wrong */
1460 Vprintf(stdout
, "Prefix size error, max size %d, got %ld\n",
1463 tpb
->length
= bufsize
;
1465 ret
= read_a_block(mt
, tpb
->buf
, size
, &rl
);
1469 tbufptr
= decompress_tapebuf(tpb
, rl
+ PREFIXSIZE
);
1470 if (tbufptr
== NULL
) {
1471 msg_read_error("File decompression error while");
1472 if (!yflag
&& !reply("continue"))
1474 memset(tapebuf
, 0, bufsize
);
1479 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1485 /* Errors while reading from a file or pipe are catastrophic. Since
1486 * there are no block boundaries, it's impossible to bypass the
1487 * block in error and find the start of the next block.
1490 /* It's possible to have multiple input files using -M
1491 * and -f file1,file2...
1493 Vprintf(stdout
, "End-of-File encountered\n");
1503 msg_read_error("Read error while");
1504 /* if (!yflag && !reply("continue")) */
1509 * Read compressed data from a tape and uncompress it.
1510 * Handle read errors, and end of media.
1511 * Since a tape consists of separate physical blocks, we try
1512 * to recover from errors by repositioning the tape to the next
1516 readtape_comprtape(char *buf
)
1520 struct tapebuf
*tpb
;
1523 if (blkcnt
< numtrec
) {
1524 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1529 /* need to read the next block */
1531 for (i
= 0; i
< ntrec
; i
++)
1532 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1534 tpb
= (struct tapebuf
*) tapebuf
;
1536 /* read the block */
1537 size
= bufsize
+ PREFIXSIZE
;
1538 ret
= read_a_block(mt
, tapebuf
, size
, &rl
);
1542 tbufptr
= decompress_tapebuf(tpb
, rl
);
1543 if (tbufptr
== NULL
) {
1544 msg_read_error("Tape decompression error while");
1545 if (!yflag
&& !reply("continue"))
1547 memset(tapebuf
, 0, PREFIXSIZE
+ bufsize
);
1553 /* Handle errors: EOT switches to the next volume, other errors
1554 * attempt to position the tape to the next block.
1557 Vprintf(stdout
, "End-of-tape encountered\n");
1566 msg_read_error("Tape read error while");
1567 if (!yflag
&& !reply("continue"))
1569 memset(tapebuf
, 0, PREFIXSIZE
+ bufsize
);
1574 rl
= rmtioctl(MTFSR
, 1);
1580 rl
= ioctl(mt
, MTIOCTOP
, &tcom
);
1584 warn("continuation failed");
1585 if (!yflag
&& !reply("assume end-of-tape and continue"))
1587 ret
= 0; /* end of tape */
1593 memmove(buf
, &tbufptr
[(blkcnt
++ * TP_BSIZE
)], TP_BSIZE
);
1599 * Decompress a struct tapebuf into a buffer. readsize is the size read
1600 * from the tape/file and is used for error messages. Returns a pointer
1601 * to the location of the uncompressed buffer or NULL on errors.
1602 * Adjust numtrec and complain for a short block.
1605 decompress_tapebuf(struct tapebuf
*tpbin
, int readsize
)
1607 /* If zflag is on, all blocks have a struct tapebuf prefix */
1608 /* zflag gets set in setup() from the dump header */
1609 int cresult
, blocklen
;
1610 unsigned long worklen
;
1611 char *output
= NULL
,*reason
= NULL
, *lengtherr
= NULL
;
1613 /* build a length error message */
1614 blocklen
= tpbin
->length
;
1615 if (readsize
< blocklen
+ PREFIXSIZE
)
1616 lengtherr
= "short";
1618 if (readsize
> blocklen
+ PREFIXSIZE
)
1623 if (tpbin
->compressed
) {
1624 /* uncompress whatever we read, if it fails, complain later */
1625 cresult
= uncompress(comprbuf
, &worklen
, tpbin
->buf
, blocklen
);
1629 output
= tpbin
->buf
;
1634 if (worklen
!= ntrec
* TP_BSIZE
) {
1635 /* short block, shouldn't happen, but... */
1636 reason
= "length mismatch";
1637 if (worklen
% TP_BSIZE
== 0)
1638 numtrec
= worklen
/ TP_BSIZE
;
1642 reason
= "not enough memory";
1645 reason
= "buffer too small";
1648 reason
= "data error";
1655 fprintf(stderr
, "%s compressed block: %d expected: %d\n",
1656 lengtherr
, readsize
, tpbin
->length
+ PREFIXSIZE
);
1657 fprintf(stderr
, "decompression error, block %ld: %s\n",
1658 tpblksread
+1, reason
);
1659 if (cresult
!= Z_OK
) output
= NULL
;
1665 * Print an error message for a read error.
1666 * This was exteracted from the original readtape().
1669 msg_read_error(char *m
)
1671 switch (curfile
.action
) {
1673 fprintf(stderr
, "%s trying to set up tape\n", m
);
1676 fprintf(stderr
, "%s trying to resynchronize\n", m
);
1679 fprintf(stderr
, "%s restoring %s\n", m
, curfile
.name
);
1682 fprintf(stderr
, "%s skipping over inode %lu\n", m
,
1683 (unsigned long)curfile
.ino
);
1687 #endif /* HAVE_ZLIB */
1690 * Read the first block and set the blocksize from its length. Test
1691 * if the block looks like a compressed dump tape. setup() will make
1692 * the final determination by checking the compressed flag if gethead()
1693 * finds a valid header. The test here is necessary to offset the buffer
1694 * by the size of the compressed prefix. zflag is set here so that
1695 * readtape_set can set the correct function pointer for readtape().
1696 * Note that the first block of each tape/file will not be compressed.
1699 findtapeblksize(void)
1703 struct tapebuf
*tpb
= (struct tapebuf
*) tapebuf
;
1704 struct s_spcl
*spclpt
= (struct s_spcl
*) tpb
->buf
;
1706 for (i
= 0; i
< ntrec
; i
++)
1707 ((struct s_spcl
*)&tapebuf
[i
* TP_BSIZE
])->c_magic
= 0;
1711 * For a pipe or file, read in the first record. For a tape, read
1714 len
= magtapein
? bufsize
+ PREFIXSIZE
: TP_BSIZE
;
1716 if (read_a_block(mt
, tapebuf
, len
, &i
) <= 0)
1717 errx(1, "Tape read error on first record");
1720 * If the input is from a file or a pipe, we read TP_BSIZE
1721 * bytes looking for a compressed dump header, we then
1722 * need to read in the rest of the record, as determined by
1723 * tpb->length or bufsize. The first block of the dump is
1724 * guaranteed to not be compressed so we look at the header.
1727 if (tpb
->length
% TP_BSIZE
== 0
1728 && tpb
->length
<= bufsize
1729 && tpb
->compressed
== 0
1730 && spclpt
->c_type
== TS_TAPE
1731 && spclpt
->c_flags
& DR_COMPRESSED
) {
1732 /* Looks like it's a compressed dump block prefix, */
1733 /* read in the rest of the block based on tpb->length. */
1734 len
= tpb
->length
- TP_BSIZE
+ PREFIXSIZE
;
1735 if (read_a_block(mt
, tapebuf
+TP_BSIZE
, len
, &i
) <= 0
1737 errx(1,"Error reading dump file header");
1739 numtrec
= ntrec
= tpb
->length
/ TP_BSIZE
;
1743 /* read in the rest of the block based on bufsize */
1744 len
= bufsize
- TP_BSIZE
;
1745 if (read_a_block(mt
, tapebuf
+TP_BSIZE
, len
, &i
) <= 0
1747 errx(1,"Error reading dump file header");
1751 Vprintf(stdout
, "Input block size is %ld\n", ntrec
);
1756 * If the input is a tape, we tried to read PREFIXSIZE +
1757 * ntrec * TP_BSIZE bytes. If it's not a compressed dump tape
1758 * or the value of ntrec is too large, we have read less than
1759 * what we asked for; adjust the value of ntrec and test for
1760 * a compressed dump tape prefix.
1763 if (i
% TP_BSIZE
!= 0) {
1764 if (i
% TP_BSIZE
== PREFIXSIZE
1765 && tpb
->compressed
== 0
1766 && spclpt
->c_type
== TS_TAPE
1767 && spclpt
->c_flags
& DR_COMPRESSED
) {
1771 if (tpb
->length
> bufsize
)
1772 errx(1, "Tape blocksize is too large, use "
1773 "\'-b %d\' ", tpb
->length
/ TP_BSIZE
);
1776 errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)",
1779 ntrec
= i
/ TP_BSIZE
;
1781 Vprintf(stdout
, "Tape block size is %ld\n", ntrec
);
1785 * Read a block of data handling all of the messy details.
1787 static int read_a_block(int fd
, void *buf
, size_t len
, long *lengthread
)
1795 i
= rmtread(buf
, size
);
1798 i
= read(fd
, buf
, size
);
1801 break; /* EOD or error */
1804 break; /* block at a time for mt */
1807 *lengthread
= len
- size
;
1826 * Read the next block from the tape.
1827 * Check to see if it is one of several vintage headers.
1828 * If it is an old style header, convert it to a new style header.
1829 * If it is not any valid header, return an error.
1832 gethead(struct s_spcl
*buf
)
1840 char dummy
[TP_BSIZE
];
1847 u_int16_t c_inumber
;
1852 u_int16_t odi_nlink
;
1868 readtape((char *)buf
);
1869 if (buf
->c_magic
!= NFS_MAGIC
) {
1870 if (swabi(buf
->c_magic
) != NFS_MAGIC
)
1873 Vprintf(stdout
, "Note: Doing Byte swapping\n");
1877 if (checksum((int *)buf
) == FAIL
)
1880 swabst((u_char
*)"8i4s31i528bi192b2i", (u_char
*)buf
);
1883 readtape((char *)(&u_ospcl
.s_ospcl
));
1884 memset((char *)buf
, 0, (long)TP_BSIZE
);
1885 buf
->c_type
= u_ospcl
.s_ospcl
.c_type
;
1886 buf
->c_date
= u_ospcl
.s_ospcl
.c_date
;
1887 buf
->c_ddate
= u_ospcl
.s_ospcl
.c_ddate
;
1888 buf
->c_volume
= u_ospcl
.s_ospcl
.c_volume
;
1889 buf
->c_tapea
= u_ospcl
.s_ospcl
.c_tapea
;
1890 buf
->c_inumber
= u_ospcl
.s_ospcl
.c_inumber
;
1891 buf
->c_checksum
= u_ospcl
.s_ospcl
.c_checksum
;
1892 buf
->c_magic
= u_ospcl
.s_ospcl
.c_magic
;
1893 buf
->c_dinode
.di_mode
= u_ospcl
.s_ospcl
.c_dinode
.odi_mode
;
1894 buf
->c_dinode
.di_nlink
= u_ospcl
.s_ospcl
.c_dinode
.odi_nlink
;
1895 buf
->c_dinode
.di_uid
= u_ospcl
.s_ospcl
.c_dinode
.odi_uid
;
1896 buf
->c_dinode
.di_gid
= u_ospcl
.s_ospcl
.c_dinode
.odi_gid
;
1897 buf
->c_dinode
.di_size
= u_ospcl
.s_ospcl
.c_dinode
.odi_size
;
1898 buf
->c_dinode
.di_rdev
= u_ospcl
.s_ospcl
.c_dinode
.odi_rdev
;
1900 buf
->c_dinode
.di_atime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1901 buf
->c_dinode
.di_mtime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1902 buf
->c_dinode
.di_ctime
.tv_sec
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1903 #else /* __linux__ */
1904 buf
->c_dinode
.di_atime
= u_ospcl
.s_ospcl
.c_dinode
.odi_atime
;
1905 buf
->c_dinode
.di_mtime
= u_ospcl
.s_ospcl
.c_dinode
.odi_mtime
;
1906 buf
->c_dinode
.di_ctime
= u_ospcl
.s_ospcl
.c_dinode
.odi_ctime
;
1907 #endif /* __linux__ */
1908 buf
->c_count
= u_ospcl
.s_ospcl
.c_count
;
1909 memmove(buf
->c_addr
, u_ospcl
.s_ospcl
.c_addr
, (long)256);
1910 if (u_ospcl
.s_ospcl
.c_magic
!= OFS_MAGIC
||
1911 checksum((int *)(&u_ospcl
.s_ospcl
)) == FAIL
)
1913 buf
->c_magic
= NFS_MAGIC
;
1916 if ((buf
->c_dinode
.di_size
== 0 || buf
->c_dinode
.di_size
> 0xfffffff) &&
1917 (buf
->c_dinode
.di_mode
& IFMT
) == IFDIR
&& Qcvt
== 0) {
1918 qcvt
.qval
= buf
->c_dinode
.di_size
;
1919 if (qcvt
.val
[0] || qcvt
.val
[1]) {
1920 printf("Note: Doing Quad swapping\n");
1925 qcvt
.qval
= buf
->c_dinode
.di_size
;
1927 qcvt
.val
[1] = qcvt
.val
[0];
1929 buf
->c_dinode
.di_size
= qcvt
.qval
;
1933 switch (buf
->c_type
) {
1938 * Have to patch up missing information in bit map headers
1941 buf
->c_dinode
.di_size
= buf
->c_count
* TP_BSIZE
;
1942 if (buf
->c_count
> TP_NINDIR
)
1945 for (i
= 0; i
< buf
->c_count
; i
++)
1950 if ((buf
->c_flags
& DR_NEWINODEFMT
) == 0)
1962 panic("gethead: unknown inode type %d\n", buf
->c_type
);
1966 * If we are restoring a filesystem with old format inodes,
1967 * copy the uid/gid to the new location.
1970 buf
->c_dinode
.di_uid
= buf
->c_dinode
.di_ouid
;
1971 buf
->c_dinode
.di_gid
= buf
->c_dinode
.di_ogid
;
1979 * Check that a header is where it belongs and predict the next header
1982 accthdr(struct s_spcl
*header
)
1984 static dump_ino_t previno
= 0x7fffffff;
1985 static int prevtype
;
1986 static long predict
;
1989 if (header
->c_type
== TS_TAPE
) {
1990 fprintf(stderr
, "Volume header (%s inode format) ",
1991 oldinofmt
? "old" : "new");
1992 if (header
->c_firstrec
)
1993 fprintf(stderr
, "begins with record %d",
1994 header
->c_firstrec
);
1995 fprintf(stderr
, "\n");
1996 previno
= 0x7fffffff;
1999 if (previno
== 0x7fffffff)
2003 fprintf(stderr
, "Dumped inodes map header");
2006 fprintf(stderr
, "Used inodes map header");
2009 fprintf(stderr
, "File header, ino %lu", (unsigned long)previno
);
2012 fprintf(stderr
, "File continuation header, ino %ld", (long)previno
);
2015 fprintf(stderr
, "End of tape header");
2018 if (predict
!= blksread
- 1)
2019 fprintf(stderr
, "; predicted %ld blocks, got %ld blocks",
2020 predict
, blksread
- 1);
2021 fprintf(stderr
, "\n");
2024 if (header
->c_type
!= TS_END
)
2025 for (i
= 0; i
< header
->c_count
; i
++)
2026 if (readmapflag
|| header
->c_addr
[i
] != 0)
2030 prevtype
= header
->c_type
;
2031 previno
= header
->c_inumber
;
2035 * Find an inode header.
2036 * Complain if had to skip, and complain is set.
2039 findinode(struct s_spcl
*header
)
2041 static long skipcnt
= 0;
2045 curfile
.name
= "<name unknown>";
2046 curfile
.action
= UNKNOWN
;
2050 if (header
->c_magic
!= NFS_MAGIC
) {
2052 while (gethead(header
) == FAIL
||
2053 header
->c_date
!= dumpdate
)
2056 switch (header
->c_type
) {
2060 * Skip up to the beginning of the next record
2062 for (i
= 0; i
< header
->c_count
; i
++)
2063 if (header
->c_addr
[i
])
2065 while (gethead(header
) == FAIL
||
2066 header
->c_date
!= dumpdate
)
2071 curfile
.dip
= &header
->c_dinode
;
2072 curfile
.ino
= header
->c_inumber
;
2076 curfile
.ino
= maxino
;
2080 curfile
.name
= "<file removal list>";
2084 curfile
.name
= "<file dump list>";
2088 panic("unexpected tape header\n");
2092 panic("unknown tape header type %d\n", spcl
.c_type
);
2096 } while (header
->c_type
== TS_ADDR
);
2098 fprintf(stderr
, "resync restore, skipped %ld blocks\n",
2108 j
= sizeof(union u_spcl
) / sizeof(int);
2115 /* What happens if we want to read restore tapes
2116 for a 16bit int machine??? */
2122 if (i
!= CHECKSUM
) {
2123 fprintf(stderr
, "Checksum error %o, inode %lu file %s\n", i
,
2124 (unsigned long)curfile
.ino
, curfile
.name
);
2134 #include <varargs.h>
2139 msg(const char *fmt
, ...)
2152 (void)vfprintf(stderr
, fmt
, ap
);
2155 #endif /* RRESTORE */
2158 swab16(u_char
*sp
, int n
)
2163 c
= sp
[0]; sp
[0] = sp
[1]; sp
[1] = c
;
2170 swab32(u_char
*sp
, int n
)
2175 c
= sp
[0]; sp
[0] = sp
[3]; sp
[3] = c
;
2176 c
= sp
[1]; sp
[1] = sp
[2]; sp
[2] = c
;
2183 swab64(u_char
*sp
, int n
)
2188 c
= sp
[0]; sp
[0] = sp
[7]; sp
[7] = c
;
2189 c
= sp
[1]; sp
[1] = sp
[6]; sp
[6] = c
;
2190 c
= sp
[2]; sp
[2] = sp
[5]; sp
[5] = c
;
2191 c
= sp
[3]; sp
[3] = sp
[4]; sp
[4] = c
;
2198 swabst(u_char
*cp
, u_char
*sp
)
2204 case '0': case '1': case '2': case '3': case '4':
2205 case '5': case '6': case '7': case '8': case '9':
2206 n
= (n
* 10) + (*cp
++ - '0');
2209 case 's': case 'w': case 'h':
2227 default: /* Any other character, like 'b' counts as byte. */
2241 swabst((u_char
*)"i", (u_char
*)&x
);
2249 swabst((u_char
*)"l", (u_char
*)&x
);