2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <stelian@popies.net>, 1999-2000
6 * Stelian Pop <stelian@popies.net> - AlcĂ´ve <www.alcove.com>, 2000-2002
10 * Copyright (c) 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 1.58 2002/02/04 11:18:46 stelian Exp $";
53 #include <compatlfs.h>
55 #include <compaterr.h>
63 #include <sys/param.h>
71 #ifdef HAVE_EXT2FS_EXT2_FS_H
72 #include <ext2fs/ext2_fs.h>
74 #include <linux/ext2_fs.h>
76 #include <ext2fs/ext2fs.h>
77 #include <bsdcompat.h>
79 #include <ufs/ufs/dinode.h>
80 #endif /* __linux__ */
81 #include <protocols/dumprestore.h>
85 #endif /* HAVE_ZLIB */
89 #endif /* HAVE_BZLIB */
93 #include "pathnames.h"
98 static long fssize = MAXBSIZE;
101 static int magtapein = 0; /* input is from magtape */
102 static char magtape[MAXPATHLEN];
103 static char magtapeprefix[MAXPATHLEN];
106 static char *tapebuf; /* input buffer for read */
107 static int bufsize; /* buffer size without prefix */
108 static char *tbufptr = NULL; /* active tape buffer */
109 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
110 static char *comprbuf; /* uncompress work buf */
111 static size_t comprlen; /* size including prefix */
113 static union u_spcl endoftapemark;
114 static long blksread; /* blocks read since last header */
115 static long tpblksread = 0; /* TP_BSIZE blocks read */
116 static long tapesread;
117 static sigjmp_buf restart;
118 static int gettingfile = 0; /* restart has a valid frame */
123 static char lnkbuf[MAXPATHLEN + 1];
126 int oldinofmt; /* old inode format conversion required */
127 int Bcvt; /* Swap Bytes (for CCI or sun) */
128 static int Qcvt; /* Swap quads (for sun) */
130 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
132 static void accthdr __P((struct s_spcl *));
133 static int checksum __P((int *));
134 static void findinode __P((struct s_spcl *));
135 static void findtapeblksize __P((void));
136 static int gethead __P((struct s_spcl *));
137 static void readtape __P((char *));
138 static void setdumpnum __P((void));
139 static u_int swabi __P((u_int));
141 static u_long swabl __P((u_long));
143 static u_char *swab64 __P((u_char *, int));
144 static u_char *swab32 __P((u_char *, int));
145 static u_char *swab16 __P((u_char *, int));
146 static void terminateinput __P((void));
147 static void xtrfile __P((char *, size_t));
148 static void xtrlnkfile __P((char *, size_t));
149 static void xtrlnkskip __P((char *, size_t));
150 static void xtrmap __P((char *, size_t));
151 static void xtrmapskip __P((char *, size_t));
152 static void xtrskip __P((char *, size_t));
153 static void setmagtapein __P((void));
155 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
156 static void newcomprbuf __P((int));
157 static void (*readtape_func) __P((char *));
158 static void readtape_set __P((char *));
159 static void readtape_uncompr __P((char *));
160 static void readtape_comprfile __P((char *));
161 static void readtape_comprtape __P((char *));
162 static char *decompress_tapebuf __P((struct tapebuf *, int));
163 static void msg_read_error __P((char *));
165 static int read_a_block __P((int, char *, size_t, long *));
166 #define PREFIXSIZE sizeof(struct tapebuf)
168 #define COMPARE_ONTHEFLY 1
171 static int ifile; /* input file for compare */
172 static int cmperror; /* compare error */
173 static void xtrcmpfile __P((char *, size_t));
174 static void xtrcmpskip __P((char *, size_t));
177 static int readmapflag;
180 * Set up an input source. This is called from main.c before setup() is.
183 setinput(char *source)
189 newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC);
193 if (strchr(source, ':')) {
195 source = strchr(host, ':');
197 if (rmthost(host) == 0)
201 if (strcmp(source, "-") == 0) {
203 * Since input is coming from a pipe we must establish
204 * our own connection to the terminal.
206 terminal = fopen(_PATH_TTY, "r");
207 if (terminal == NULL) {
208 warn("cannot open %s", _PATH_TTY);
209 terminal = fopen(_PATH_DEVNULL, "r");
210 if (terminal == NULL)
211 err(1, "cannot open %s", _PATH_DEVNULL);
215 setuid(getuid()); /* no longer need or want root privileges */
217 strncpy(magtapeprefix, source, MAXPATHLEN);
218 magtapeprefix[MAXPATHLEN-1] = '\0';
219 snprintf(magtape, MAXPATHLEN, "%s%03d", source, 1);
222 strncpy(magtape, source, MAXPATHLEN);
223 magtape[MAXPATHLEN - 1] = '\0';
227 newtapebuf(long size)
229 static int tapebufsize = -1;
232 bufsize = ntrec * TP_BSIZE;
233 if (size <= tapebufsize)
237 tapebuf = malloc(size * TP_BSIZE + sizeof(struct tapebuf));
239 errx(1, "Cannot allocate space for tape buffer");
243 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
245 newcomprbuf(int size)
247 size_t buf_size = (size+1) * TP_BSIZE + sizeof(struct tapebuf);
248 if (buf_size <= comprlen)
251 if (comprbuf != NULL)
253 comprbuf = malloc(comprlen);
254 if (comprbuf == NULL)
255 errx(1, "Cannot allocate space for decompress buffer");
257 #endif /* HAVE_ZLIB || HAVE_BZLIB */
260 * Verify that the tape drive can be accessed and
261 * that it actually is a dump tape.
266 int i, j, *ip, bot_code;
270 Vprintf(stdout, "Verify tape and initialize maps\n");
271 if (Afile == NULL && bot_script) {
272 msg("Launching %s\n", bot_script);
273 bot_code = system_command(bot_script, magtape, 1);
274 if (bot_code != 0 && bot_code != 1) {
275 msg("Restore aborted by the beginning of tape script\n");
287 mt = rmtopen(temptape, 0);
293 mt = OPEN(temptape, O_RDONLY, 0);
295 err(1, "%s", magtape);
301 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
302 readtape_func = readtape_set;
306 if (gethead(&spcl) == FAIL) {
307 blkcnt--; /* push back this block */
311 if (gethead(&spcl) == FAIL)
312 errx(1, "Tape is not a dump tape");
313 fprintf(stderr, "Converting to new file system format.\n");
317 fprintf(stderr, "Dump tape is compressed.\n");
318 #if !defined(HAVE_ZLIB) && !defined(HAVE_BZLIB)
319 errx(1,"This restore version doesn't support decompression");
320 #endif /* !HAVE_ZLIB && !HAVE_BZLIB */
323 endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC;
324 endoftapemark.s_spcl.c_type = TS_END;
325 ip = (int *)&endoftapemark;
326 j = sizeof(union u_spcl) / sizeof(int);
331 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
333 if (vflag || command == 't' || command == 'C')
336 if (tapeposflag && spcl.c_date != qfadumpdate)
337 errx(1, "different QFA/dumpdates detected\n");
339 if (filesys[0] == '\0') {
341 strncpy(filesys, spcl.c_filesys, NAMELEN);
342 filesys[NAMELEN - 1] = '\0';
343 dirptr = strstr(filesys, " (dir");
347 dumptime = spcl.c_ddate;
348 dumpdate = spcl.c_date;
349 if (STAT(".", &stbuf) < 0)
350 err(1, "cannot stat .");
351 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
353 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
354 fssize = stbuf.st_blksize;
355 if (((fssize - 1) & fssize) != 0)
356 errx(1, "bad block size %ld", fssize);
357 if (spcl.c_volume != 1)
358 errx(1, "Tape is not volume 1 of the dump");
359 if (gethead(&spcl) == FAIL) {
360 Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread);
361 panic("no header after volume mark!\n");
364 if (spcl.c_type != TS_CLRI)
365 errx(1, "Cannot find file removal list");
366 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
367 Dprintf(stdout, "maxino = %ld\n", (long)maxino);
368 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
370 errx(1, "no memory for active inode map");
372 curfile.action = USING;
373 getfile(xtrmap, xtrmapskip);
375 if (spcl.c_type != TS_BITS)
376 errx(1, "Cannot find file dump list");
377 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
378 if (map == (char *)NULL)
379 errx(1, "no memory for file dump list");
381 curfile.action = USING;
382 getfile(xtrmap, xtrmapskip);
384 * If there may be whiteout entries on the tape, pretend that the
385 * whiteout inode exists, so that the whiteout entries can be
389 SETINO(WINO, dumpmap);
394 * Prompt user to load a new dump volume.
395 * "Nextvol" is the next suggested volume to use.
396 * This suggested volume is enforced when doing full
397 * or incremental restores, but can be overridden by
398 * the user when only extracting a subset of the files.
403 long newvol = 0, wantnext = 0, i;
404 long saved_blksread = 0, saved_tpblksread = 0;
405 union u_spcl tmpspcl;
406 # define tmpbuf tmpspcl.s_spcl
408 int haderror = 0, bot_code = 1;
416 panic("Changing volumes on pipe input?\n");
421 saved_blksread = blksread;
422 saved_tpblksread = tpblksread;
423 #if defined(USE_QFA) && defined(sunos)
424 if (createtapeposflag || tapeposflag)
429 exit(1); /* pipes do not get a second chance */
430 if (aflag || curfile.action != SKIP) {
437 while (newvol <= 0) {
438 if (tapesread == 0) {
439 fprintf(stderr, "%s%s%s%s%s",
440 "You have not read any volumes yet.\n",
441 "Unless you know which volume your",
442 " file(s) are on you should start\n",
443 "with the last volume and work",
444 " towards the first.\n");
446 fprintf(stderr, "You have read volumes");
448 for (i = 1; i < 32; i++)
449 if (tapesread & (1 << i)) {
450 fprintf(stderr, "%s%ld", buf, (long)i);
453 fprintf(stderr, "\n");
456 fprintf(stderr, "Specify next volume # (none if no more volumes): ");
457 (void) fflush(stderr);
458 (void) fgets(buf, TP_BSIZE, terminal);
459 } while (!feof(terminal) && buf[0] == '\n');
462 if (!strcmp(buf, "none\n")) {
469 "Volume numbers are positive numerics\n");
472 if (newvol == volno) {
473 tapesread |= 1 << volno;
474 #if defined(USE_QFA) && defined(sunos)
475 if (createtapeposflag || tapeposflag) {
476 if (OpenSMTCmt(magtape) < 0) {
487 snprintf(magtape, MAXPATHLEN, "%s%03ld", magtapeprefix, newvol);
488 magtape[MAXPATHLEN - 1] = '\0';
490 if (bot_script && !haderror) {
491 msg("Launching %s\n", bot_script);
492 bot_code = system_command(bot_script, magtape, newvol);
493 if (bot_code != 0 && bot_code != 1) {
494 msg("Restore aborted by the beginning of tape script\n");
498 if (haderror || (bot_code && !Mflag)) {
500 fprintf(stderr, "Mount volume %ld\n", (long)newvol);
501 fprintf(stderr, "Enter ``none'' if there are no more volumes\n");
502 fprintf(stderr, "otherwise enter volume name (default: %s) ", magtape);
503 (void) fflush(stderr);
504 (void) fgets(buf, TP_BSIZE, terminal);
507 if (!strcmp(buf, "none\n")) {
511 if (buf[0] != '\n') {
513 (void) strncpy(magtape, buf, sizeof(magtape));
514 magtape[sizeof(magtape) - 1] = '\0';
515 if ((pos = strchr(magtape, '\n')))
516 magtape[pos - magtape] = '\0';
521 mt = rmtopen(magtape, 0);
524 mt = OPEN(magtape, O_RDONLY, 0);
527 fprintf(stderr, "Cannot open %s\n", magtape);
534 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
535 readtape_func = readtape_set;
541 if (gethead(&tmpbuf) == FAIL) {
542 Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread);
543 fprintf(stderr, "tape is not dump tape\n");
546 blksread = saved_blksread;
547 tpblksread = saved_tpblksread;
550 if (tmpbuf.c_volume != volno) {
551 fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume);
554 blksread = saved_blksread;
555 tpblksread = saved_tpblksread;
558 if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) {
559 fprintf(stderr, "Wrong dump date\n\tgot: %s",
560 ctime4(&tmpbuf.c_date));
561 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
564 blksread = saved_blksread;
565 tpblksread = saved_tpblksread;
568 tapesread |= 1 << volno;
569 blksread = saved_blksread;
570 tpblksread = saved_tpblksread;
572 * If continuing from the previous volume, skip over any
573 * blocks read already at the end of the previous volume.
575 * If coming to this volume at random, skip to the beginning
576 * of the next record.
579 fprintf(stderr, "Dump tape is compressed.\n");
580 #if !defined(HAVE_ZLIB) && !defined(HAVE_BZLIB)
581 errx(1,"This restore version doesn't support decompression");
582 #endif /* !HAVE_ZLIB && !HAVE_BZLIB */
584 Dprintf(stdout, "read %ld recs, tape starts with %ld\n",
585 tpblksread, (long)tmpbuf.c_firstrec);
586 if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) {
588 tpblksread = tmpbuf.c_firstrec;
589 for (i = tmpbuf.c_count; i > 0; i--)
591 } else if (tmpbuf.c_firstrec > 0 &&
592 tmpbuf.c_firstrec < tpblksread - 1) {
594 * -1 since we've read the volume header
596 i = tpblksread - tmpbuf.c_firstrec - 1;
597 Dprintf(stderr, "Skipping %ld duplicate record%s.\n",
598 (long)i, i > 1 ? "s" : "");
603 if (curfile.action == USING) {
605 panic("active file into volume 1\n");
609 * Skip up to the beginning of the next record
611 if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER))
612 for (i = tmpbuf.c_count; i > 0; i--)
614 (void) gethead(&spcl);
618 siglongjmp(restart, 1);
623 * Handle unexpected EOF.
629 if (gettingfile && curfile.action == USING) {
630 printf("Warning: %s %s\n",
631 "End-of-input encountered while extracting", curfile.name);
633 curfile.name = "<name unknown>";
634 curfile.action = UNKNOWN;
636 curfile.ino = maxino;
639 siglongjmp(restart, 1);
644 * handle multiple dumps per tape by skipping forward to the
652 if (dumpnum == 1 || volno != 1)
655 errx(1, "Cannot have multiple dumps on pipe input");
657 tcom.mt_count = dumpnum - 1;
660 rmtioctl(MTFSF, dumpnum - 1);
663 if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0)
670 fprintf(stdout, "Dump date: %s", ctime4(&spcl.c_date));
671 fprintf(stdout, "Dumped from: %s",
672 (spcl.c_ddate == 0) ? "the epoch\n" : ctime4(&spcl.c_ddate));
673 if (spcl.c_host[0] == '\0')
675 fprintf(stdout, "Level %d dump of %s on %s:%s\n",
676 spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
677 fprintf(stdout, "Label: %s\n", spcl.c_label);
685 if (volinfo[1] == ROOTINO) {
686 printf("Starting inode numbers by volume:\n");
687 for (i = 1; i < TP_NINOS && volinfo[i] != 0; ++i)
688 printf("\tVolume %d: %lu\n", i, (unsigned long)volinfo[i]);
694 time_t tv_sec; /* seconds */
695 suseconds_t tv_usec; /* and microseconds */
700 extractfile(char *name)
704 struct timeval timep[2];
708 curfile.action = USING;
709 #if defined(__linux__) || defined(sunos)
710 timep[0].tv_sec = curfile.dip->di_atime.tv_sec;
711 timep[0].tv_usec = curfile.dip->di_atime.tv_usec;
712 timep[1].tv_sec = curfile.dip->di_mtime.tv_sec;
713 timep[1].tv_usec = curfile.dip->di_mtime.tv_usec;
714 #else /* __linux__ || sunos */
715 timep[0].tv_sec = curfile.dip->di_atime;
716 timep[0].tv_usec = curfile.dip->di_atimensec / 1000;
717 timep[1].tv_sec = curfile.dip->di_mtime;
718 timep[1].tv_usec = curfile.dip->di_mtimensec / 1000;
719 #endif /* __linux__ */
720 mode = curfile.dip->di_mode;
721 flags = curfile.dip->di_flags;
722 switch (mode & IFMT) {
725 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
730 Vprintf(stdout, "skipped socket %s\n", name);
736 ep = lookupname(name);
737 if (ep == NULL || ep->e_flags & EXTRACT)
738 panic("unextracted directory %s\n", name);
742 Vprintf(stdout, "extract file %s\n", name);
743 return (genliteraldir(name, curfile.ino));
748 uid_t luid = curfile.dip->di_uid;
749 gid_t lgid = curfile.dip->di_gid;
753 getfile(xtrlnkfile, xtrlnkskip);
756 "%s: zero length symbolic link (ignored)\n", name);
759 if (linkit(lnkbuf, name, SYMLINK) == FAIL)
762 (void) lchown(name, luid, lgid);
768 Vprintf(stdout, "extract fifo %s\n", name);
775 if (mkfifo(name, mode) < 0) {
776 warn("%s: cannot create fifo", name);
780 (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
781 (void) chmod(name, mode);
784 (void) fsetflags(name, flags);
786 (void) chflags(name, flags);
794 Vprintf(stdout, "extract special file %s\n", name);
801 if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
802 warn("%s: cannot create special file", name);
806 (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
807 (void) chmod(name, mode);
811 warn("%s: fsetflags called on a special file", name);
812 (void) fsetflags(name, flags);
815 (void) chflags(name, flags);
822 Vprintf(stdout, "extract file %s\n", name);
829 if ((ofile = OPEN(name, O_WRONLY | O_CREAT | O_TRUNC,
831 warn("%s: cannot create file", name);
835 (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid);
836 (void) fchmod(ofile, mode);
839 (void) setflags(ofile, flags);
841 (void) fchflags(ofile, flags);
843 getfile(xtrfile, xtrskip);
852 * skip over bit maps on the tape
858 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
863 * skip over a file on the tape
869 curfile.action = SKIP;
870 getfile(xtrnull, xtrnull);
874 * Extract a file from the tape.
875 * When an allocated block is found it is passed to the fill function;
876 * when an unallocated block (hole) is found, a zeroed buffer is passed
877 * to the skip function.
880 getfile(void (*fill) __P((char *, size_t)), void (*skip) __P((char *, size_t)))
883 volatile int curblk = 0;
884 volatile quad_t size = spcl.c_dinode.di_size;
885 volatile int last_write_was_hole = 0;
886 quad_t origsize = size;
887 static char clearedbuf[MAXBSIZE];
888 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
891 if (spcl.c_type == TS_END)
892 panic("ran off end of tape\n");
893 if (spcl.c_magic != NFS_MAGIC)
894 panic("not at beginning of a file\n");
895 if (!gettingfile && setjmp(restart) != 0)
899 for (i = 0; i < spcl.c_count; i++) {
900 if (readmapflag || spcl.c_addr[i]) {
901 readtape(&buf[curblk++][0]);
902 if (curblk == fssize / TP_BSIZE) {
903 (*fill)((char *)buf, (size_t)(size > TP_BSIZE ?
904 fssize : (curblk - 1) * TP_BSIZE + size));
906 last_write_was_hole = 0;
910 (*fill)((char *)buf, (size_t)(size > TP_BSIZE ?
912 (curblk - 1) * TP_BSIZE + size));
915 (*skip)(clearedbuf, (long)(size > TP_BSIZE ?
917 last_write_was_hole = 1;
919 if ((size -= TP_BSIZE) <= 0) {
920 for (i++; i < spcl.c_count; i++)
921 if (readmapflag || spcl.c_addr[i])
926 if (gethead(&spcl) == GOOD && size > 0) {
927 if (spcl.c_type == TS_ADDR)
930 "Missing address (header) block for %s at %ld blocks\n",
931 curfile.name, (long)blksread);
934 (*fill)((char *)buf, (size_t)((curblk * TP_BSIZE) + size));
935 last_write_was_hole = 0;
938 fprintf(stderr, "Missing blocks at the end of %s, assuming hole\n", curfile.name);
940 size_t skp = size > TP_BSIZE ? TP_BSIZE : size;
941 (*skip)(clearedbuf, skp);
944 last_write_was_hole = 1;
946 if (last_write_was_hole) {
947 FTRUNCATE(ofile, origsize);
954 * Write out the next block of a file.
957 xtrfile(char *buf, size_t size)
962 if (write(ofile, buf, (int) size) == -1)
963 err(1, "write error extracting inode %lu, name %s\nwrite",
964 (unsigned long)curfile.ino, curfile.name);
968 * Skip over a hole in a file.
972 xtrskip(char *buf, size_t size)
975 if (LSEEK(ofile, (off_t)size, SEEK_CUR) == -1)
976 err(1, "seek error extracting inode %lu, name %s\nlseek",
977 (unsigned long)curfile.ino, curfile.name);
981 * Collect the next block of a symbolic link.
984 xtrlnkfile(char *buf, size_t size)
988 if (pathlen > MAXPATHLEN)
989 errx(1, "symbolic link name: %s->%s%s; too long %d",
990 curfile.name, lnkbuf, buf, pathlen);
991 (void) strcat(lnkbuf, buf);
995 * Skip over a hole in a symbolic link (should never happen).
999 xtrlnkskip(char *buf, size_t size)
1002 errx(1, "unallocated block in symbolic link %s", curfile.name);
1006 * Collect the next block of a bit map.
1009 xtrmap(char *buf, size_t size)
1012 memmove(map, buf, size);
1017 * Skip over a hole in a bit map (should never happen).
1021 xtrmapskip(char *buf, size_t size)
1024 panic("hole in map\n");
1029 * Noop, when an extraction function is not needed.
1033 xtrnull(char *buf, size_t size)
1039 #if COMPARE_ONTHEFLY
1041 * Compare the next block of a file.
1044 xtrcmpfile(char *buf, size_t size)
1046 static char cmpbuf[MAXBSIZE];
1051 if (read(ifile, cmpbuf, size) != size) {
1052 fprintf(stderr, "%s: size has changed.\n",
1058 if (memcmp(buf, cmpbuf, size) != 0) {
1059 fprintf(stderr, "%s: tape and disk copies are different\n",
1067 * Skip over a hole in a file.
1070 xtrcmpskip(char *buf, size_t size)
1072 static char cmpbuf[MAXBSIZE];
1078 if (read(ifile, cmpbuf, size) != size) {
1079 fprintf(stderr, "%s: size has changed.\n",
1085 for (i = 0; i < size; ++i)
1086 if (cmpbuf[i] != '\0') {
1087 fprintf(stderr, "%s: tape and disk copies are different\n",
1093 #endif /* COMPARE_ONTHEFLY */
1095 #if !COMPARE_ONTHEFLY
1097 do_cmpfiles(int fd_tape, int fd_disk, long size)
1099 static char buf_tape[BUFSIZ];
1100 static char buf_disk[BUFSIZ];
1105 if ((n_tape = read(fd_tape, buf_tape, sizeof(buf_tape))) < 1) {
1106 close(fd_tape), close(fd_disk);
1107 panic("do_cmpfiles: unexpected EOF[1]");
1109 if ((n_disk = read(fd_disk, buf_disk, sizeof(buf_tape))) < 1) {
1110 close(fd_tape), close(fd_disk);
1111 panic("do_cmpfiles: unexpected EOF[2]");
1113 if (n_tape != n_disk) {
1114 close(fd_tape), close(fd_disk);
1115 panic("do_cmpfiles: sizes different!");
1117 if (memcmp(buf_tape, buf_disk, (size_t)n_tape) != 0) return (1);
1123 /* for debugging compare problems */
1124 #undef COMPARE_FAIL_KEEP_FILE
1127 #ifdef COMPARE_FAIL_KEEP_FILE
1128 /* return true if tapefile should be unlinked after compare */
1133 cmpfiles(char *tapefile, char *diskfile, struct STAT *sbuf_disk)
1135 struct STAT sbuf_tape;
1136 int fd_tape, fd_disk;
1138 if (STAT(tapefile, &sbuf_tape) != 0) {
1139 panic("Can't lstat tmp file %s: %s\n", tapefile,
1144 if (sbuf_disk->st_size != sbuf_tape.st_size) {
1146 "%s: size changed from %ld to %ld.\n",
1147 diskfile, (long)sbuf_tape.st_size, (long)sbuf_disk->st_size);
1149 #ifdef COMPARE_FAIL_KEEP_FILE
1156 if ((fd_tape = OPEN(tapefile, O_RDONLY)) < 0) {
1157 panic("Can't open %s: %s\n", tapefile, strerror(errno));
1160 if ((fd_disk = OPEN(diskfile, O_RDONLY)) < 0) {
1162 panic("Can't open %s: %s\n", diskfile, strerror(errno));
1166 if (do_cmpfiles(fd_tape, fd_disk, sbuf_tape.st_size)) {
1167 fprintf(stderr, "%s: tape and disk copies are different\n",
1172 #ifdef COMPARE_FAIL_KEEP_FILE
1173 /* rename the file to live in /tmp */
1174 /* rename `tapefile' to /tmp/<basename of diskfile> */
1176 char *p = strrchr(diskfile, '/');
1177 char newname[MAXPATHLEN];
1179 panic("can't find / in %s\n", diskfile);
1181 snprintf(newname, sizeof(newname), "%s/debug/%s", tmpdir, p + 1);
1182 if (rename(tapefile, newname)) {
1183 panic("rename from %s to %s failed: %s\n",
1187 fprintf(stderr, "*** %s saved to %s\n",
1192 /* don't unlink the file (it's not there anymore */
1201 #ifdef COMPARE_FAIL_KEEP_FILE
1205 #endif /* !COMPARE_ONTHEFLY */
1207 #if !COMPARE_ONTHEFLY
1208 static char tmpfilename[MAXPATHLEN];
1212 comparefile(char *name)
1217 #if !COMPARE_ONTHEFLY
1218 static char *tmpfile = NULL;
1222 if ((r = LSTAT(name, &sb)) != 0) {
1223 warn("%s: does not exist (%d)", name, r);
1229 curfile.name = name;
1230 curfile.action = USING;
1231 mode = curfile.dip->di_mode;
1233 Vprintf(stdout, "comparing %s (size: %ld, mode: 0%o)\n", name,
1234 (long)sb.st_size, mode);
1236 if (sb.st_mode != mode) {
1237 fprintf(stderr, "%s: mode changed from 0%o to 0%o.\n",
1238 name, mode & 07777, sb.st_mode & 07777);
1241 switch (mode & IFMT) {
1255 char lbuf[MAXPATHLEN + 1];
1258 if (!(sb.st_mode & S_IFLNK)) {
1259 fprintf(stderr, "%s: is no longer a symbolic link\n",
1266 getfile(xtrlnkfile, xtrlnkskip);
1269 "%s: zero length symbolic link (ignored)\n",
1274 if ((lsize = readlink(name, lbuf, MAXPATHLEN)) < 0) {
1275 panic("readlink of %s failed: %s", name,
1280 if (strcmp(lbuf, lnkbuf) != 0) {
1282 "%s: symbolic link changed from %s to %s.\n",
1283 name, lnkbuf, lbuf);
1292 if (!(sb.st_mode & (S_IFCHR|S_IFBLK))) {
1293 fprintf(stderr, "%s: no longer a special file\n",
1300 if (sb.st_rdev != (int)curfile.dip->di_rdev) {
1302 "%s: device changed from %d,%d to %d,%d.\n",
1304 ((int)curfile.dip->di_rdev >> 8) & 0xff,
1305 (int)curfile.dip->di_rdev & 0xff,
1306 ((int)sb.st_rdev >> 8) & 0xff,
1307 (int)sb.st_rdev & 0xff);
1314 #if COMPARE_ONTHEFLY
1315 if ((ifile = OPEN(name, O_RDONLY)) < 0) {
1316 panic("Can't open %s: %s\n", name, strerror(errno));
1322 getfile(xtrcmpfile, xtrcmpskip);
1325 if (read(ifile, &c, 1) != 0) {
1326 fprintf(stderr, "%s: size has changed.\n",
1336 if (tmpfile == NULL) {
1337 /* argument to mktemp() must not be in RO space: */
1338 snprintf(tmpfilename, sizeof(tmpfilename), "%s/restoreCXXXXXX", tmpdir);
1339 tmpfile = mktemp(&tmpfilename[0]);
1341 if ((STAT(tmpfile, &stemp) == 0) && (unlink(tmpfile) != 0)) {
1342 panic("cannot delete tmp file %s: %s\n",
1343 tmpfile, strerror(errno));
1345 if ((ofile = OPEN(tmpfile, O_WRONLY | O_CREAT | O_TRUNC, 0600)) < 0) {
1346 panic("cannot create file temp file %s: %s\n",
1347 name, strerror(errno));
1349 getfile(xtrfile, xtrskip);
1350 (void) close(ofile);
1351 #ifdef COMPARE_FAIL_KEEP_FILE
1352 if (cmpfiles(tmpfile, name, &sb))
1355 cmpfiles(tmpfile, name, &sb);
1358 #endif /* COMPARE_ONTHEFLY */
1364 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
1365 static void (*readtape_func)(char *) = readtape_set;
1368 * Read TP_BSIZE blocks from the input.
1369 * Handle read errors, and end of media.
1370 * Decompress compressed blocks.
1375 (*readtape_func)(buf); /* call the actual processing routine */
1379 * Set function pointer for readtape() routine. zflag and magtapein must
1380 * be correctly set before the first call to readtape().
1383 readtape_set(char *buf)
1386 readtape_func = readtape_uncompr;
1390 readtape_func = readtape_comprtape;
1392 readtape_func = readtape_comprfile;
1397 #endif /* HAVE_ZLIB || HAVE_BZLIB */
1400 * This is the original readtape(), it's used for reading uncompressed input.
1401 * Read TP_BSIZE blocks from the input.
1402 * Handle read errors, and end of media.
1405 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
1406 readtape_uncompr(char *buf)
1411 ssize_t rd, newvol, i;
1412 int cnt, seek_failed;
1414 if (blkcnt < numtrec) {
1415 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1421 for (i = 0; i < ntrec; i++)
1422 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1425 cnt = ntrec * TP_BSIZE;
1428 if (createtapeposflag)
1429 (void)GetTapePos(&curtapepos);
1434 i = rmtread(&tapebuf[rd], cnt);
1437 i = read(mt, &tapebuf[rd], cnt);
1440 * Check for mid-tape short read error.
1441 * If found, skip rest of buffer and start with the next.
1443 if (!pipein && numtrec < ntrec && i > 0) {
1444 Dprintf(stdout, "mid-media short read error.\n");
1448 * Handle partial block read.
1450 if (pipein && i == 0 && rd > 0)
1452 else if (i > 0 && i != ntrec * TP_BSIZE) {
1461 * Short read. Process the blocks read.
1463 if (i % TP_BSIZE != 0)
1465 "partial block read: %ld should be %ld\n",
1466 (long)i, ntrec * TP_BSIZE);
1467 numtrec = i / TP_BSIZE;
1471 * Handle read error.
1474 fprintf(stderr, "Tape read error while ");
1475 switch (curfile.action) {
1477 fprintf(stderr, "trying to set up tape\n");
1480 fprintf(stderr, "trying to resynchronize\n");
1483 fprintf(stderr, "restoring %s\n", curfile.name);
1486 fprintf(stderr, "skipping over inode %lu\n",
1487 (unsigned long)curfile.ino);
1490 if (!yflag && !reply("continue"))
1492 i = ntrec * TP_BSIZE;
1493 memset(tapebuf, 0, (size_t)i);
1496 seek_failed = (rmtseek(i, 1) < 0);
1499 seek_failed = (LSEEK(mt, i, SEEK_CUR) == (off_t)-1);
1502 warn("continuation failed");
1503 if (!yflag && !reply("assume end-of-tape and continue"))
1509 * Handle end of tape.
1512 Vprintf(stdout, "End-of-tape encountered\n");
1521 if (rd % TP_BSIZE != 0)
1522 panic("partial block read: %d should be %d\n",
1523 rd, ntrec * TP_BSIZE);
1525 memmove(&tapebuf[rd], &endoftapemark, TP_BSIZE);
1528 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1533 #if defined(HAVE_ZLIB) || defined(HAVE_BZLIB)
1536 * Read a compressed format block from a file or pipe and uncompress it.
1537 * Attempt to handle read errors, and end of file.
1540 readtape_comprfile(char *buf)
1542 long rl, size, i, ret;
1544 struct tapebuf *tpb;
1546 if (blkcnt < numtrec) {
1547 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1552 /* need to read the next block */
1554 for (i = 0; i < ntrec; i++)
1555 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1557 tpb = (struct tapebuf *) tapebuf;
1559 /* read the block prefix */
1560 ret = read_a_block(mt, tapebuf, PREFIXSIZE, &rl);
1562 if (Vflag && (ret == 0 || rl < PREFIXSIZE || tpb->length == 0))
1569 if (size > bufsize) {
1570 /* something's wrong */
1571 Vprintf(stdout, "Prefix size error, max size %d, got %ld\n",
1574 tpb->length = bufsize;
1576 ret = read_a_block(mt, tpb->buf, size, &rl);
1580 tbufptr = decompress_tapebuf(tpb, rl + PREFIXSIZE);
1581 if (tbufptr == NULL) {
1582 msg_read_error("File decompression error while");
1583 if (!yflag && !reply("continue"))
1585 memset(tapebuf, 0, bufsize);
1590 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1596 /* Errors while reading from a file or pipe are catastrophic. Since
1597 * there are no block boundaries, it's impossible to bypass the
1598 * block in error and find the start of the next block.
1601 /* It's possible to have multiple input files using -M
1602 * and -f file1,file2...
1604 Vprintf(stdout, "End-of-File encountered\n");
1614 msg_read_error("Read error while");
1615 /* if (!yflag && !reply("continue")) */
1620 * Read compressed data from a tape and uncompress it.
1621 * Handle read errors, and end of media.
1622 * Since a tape consists of separate physical blocks, we try
1623 * to recover from errors by repositioning the tape to the next
1627 readtape_comprtape(char *buf)
1631 struct tapebuf *tpb;
1634 if (blkcnt < numtrec) {
1635 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1640 /* need to read the next block */
1642 for (i = 0; i < ntrec; i++)
1643 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1645 tpb = (struct tapebuf *) tapebuf;
1647 /* read the block */
1648 size = bufsize + PREFIXSIZE;
1649 ret = read_a_block(mt, tapebuf, size, &rl);
1653 tbufptr = decompress_tapebuf(tpb, rl);
1654 if (tbufptr == NULL) {
1655 msg_read_error("Tape decompression error while");
1656 if (!yflag && !reply("continue"))
1658 memset(tapebuf, 0, PREFIXSIZE + bufsize);
1664 /* Handle errors: EOT switches to the next volume, other errors
1665 * attempt to position the tape to the next block.
1668 Vprintf(stdout, "End-of-tape encountered\n");
1677 msg_read_error("Tape read error while");
1678 if (!yflag && !reply("continue"))
1680 memset(tapebuf, 0, PREFIXSIZE + bufsize);
1685 rl = rmtioctl(MTFSR, 1);
1691 rl = ioctl(mt, MTIOCTOP, &tcom);
1695 warn("continuation failed");
1696 if (!yflag && !reply("assume end-of-tape and continue"))
1698 ret = 0; /* end of tape */
1704 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1710 * Decompress a struct tapebuf into a buffer. readsize is the size read
1711 * from the tape/file and is used for error messages. Returns a pointer
1712 * to the location of the uncompressed buffer or NULL on errors.
1713 * Adjust numtrec and complain for a short block.
1716 decompress_tapebuf(struct tapebuf *tpbin, int readsize)
1718 /* If zflag is on, all blocks have a struct tapebuf prefix */
1719 /* zflag gets set in setup() from the dump header */
1720 int cresult, blocklen;
1721 unsigned long worklen;
1723 unsigned int worklen2;
1725 char *output = NULL,*reason = NULL, *lengtherr = NULL;
1727 /* build a length error message */
1728 blocklen = tpbin->length;
1729 if (readsize < blocklen + PREFIXSIZE)
1730 lengtherr = "short";
1732 if (readsize > blocklen + PREFIXSIZE)
1737 if (tpbin->compressed) {
1738 /* uncompress whatever we read, if it fails, complain later */
1739 if (tpbin->flags == COMPRESS_ZLIB) {
1741 errx(1,"This restore version doesn't support zlib decompression");
1743 cresult = uncompress(comprbuf, &worklen,
1744 tpbin->buf, blocklen);
1750 reason = "not enough memory";
1753 reason = "buffer too small";
1756 reason = "data error";
1761 if (cresult == Z_OK)
1765 #endif /* HAVE_ZLIB */
1767 if (tpbin->flags == COMPRESS_BZLIB) {
1769 errx(1,"This restore version doesn't support bzlib decompression");
1772 cresult = BZ2_bzBuffToBuffDecompress(
1773 comprbuf, &worklen2,
1774 tpbin->buf, blocklen, 0, 0);
1781 reason = "not enough memory";
1783 case BZ_OUTBUFF_FULL:
1784 reason = "buffer too small";
1787 case BZ_DATA_ERROR_MAGIC:
1788 case BZ_UNEXPECTED_EOF:
1789 reason = "data error";
1794 if (cresult == BZ_OK)
1798 #endif /* HAVE_BZLIB */
1802 output = tpbin->buf;
1806 numtrec = worklen / TP_BSIZE;
1807 if (worklen % TP_BSIZE != 0)
1808 reason = "length mismatch";
1812 fprintf(stderr, "%s compressed block: %d expected: %d\n",
1813 lengtherr, readsize, tpbin->length + PREFIXSIZE);
1814 fprintf(stderr, "decompression error, block %ld: %s\n",
1815 tpblksread+1, reason);
1823 * Print an error message for a read error.
1824 * This was exteracted from the original readtape().
1827 msg_read_error(char *m)
1829 switch (curfile.action) {
1831 fprintf(stderr, "%s trying to set up tape\n", m);
1834 fprintf(stderr, "%s trying to resynchronize\n", m);
1837 fprintf(stderr, "%s restoring %s\n", m, curfile.name);
1840 fprintf(stderr, "%s skipping over inode %lu\n", m,
1841 (unsigned long)curfile.ino);
1845 #endif /* HAVE_ZLIB || HAVE_BZLIB */
1848 * Read the first block and get the blocksize from it. Test
1849 * for a compressed dump tape/file. setup() will make the final
1850 * determination by checking the compressed flag if gethead()
1851 * finds a valid header. The test here is necessary to offset the buffer
1852 * by the size of the compressed prefix. zflag is set here so that
1853 * readtape_set can set the correct function pointer for readtape().
1854 * Note that the first block of each tape/file is not compressed
1855 * and does not have a prefix.
1858 findtapeblksize(void)
1862 struct tapebuf *tpb = (struct tapebuf *) tapebuf;
1863 struct s_spcl *spclpt = (struct s_spcl *) tapebuf;
1865 for (i = 0; i < ntrec; i++)
1866 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1870 * For a pipe or file, read in the first record. For a tape, read
1873 len = magtapein ? ntrec * TP_BSIZE : TP_BSIZE;
1875 if (read_a_block(mt, tapebuf, len, &i) <= 0)
1876 errx(1, "Tape read error on first record");
1879 * If the input is from a file or a pipe, we read TP_BSIZE
1880 * bytes looking for a dump header. If the dump is compressed
1881 * we need to read in the rest of the block, as determined
1882 * by c_ntrec in the dump header. The first block of the
1883 * dump is not compressed and does not have a prefix.
1886 if (spclpt->c_type == TS_TAPE
1887 && spclpt->c_flags & DR_COMPRESSED) {
1888 /* It's a compressed dump file, read in the */
1889 /* rest of the block based on spclpt->c_ntrec. */
1890 if (spclpt->c_ntrec > ntrec)
1891 errx(1, "Tape blocksize is too large, use "
1892 "\'-b %d\' ", spclpt->c_ntrec);
1893 ntrec = spclpt->c_ntrec;
1894 len = (ntrec - 1) * TP_BSIZE;
1898 /* read in the rest of the block based on bufsize */
1899 len = bufsize - TP_BSIZE;
1901 if (read_a_block(mt, tapebuf+TP_BSIZE, len, &i) < 0
1902 || (i != len && i % TP_BSIZE != 0))
1903 errx(1,"Error reading dump file header");
1906 Vprintf(stdout, "Input block size is %ld\n", ntrec);
1908 } /* if (!magtapein) */
1911 * If the input is a tape, we tried to read ntrec * TP_BSIZE bytes.
1912 * If the value of ntrec is too large, we read less than
1913 * what we asked for; adjust the value of ntrec and test for
1914 * a compressed dump tape.
1917 if (i % TP_BSIZE != 0) {
1918 /* may be old format compressed dump tape with a prefix */
1919 spclpt = (struct s_spcl *) tpb->buf;
1920 if (i % TP_BSIZE == PREFIXSIZE
1921 && tpb->compressed == 0
1922 && spclpt->c_type == TS_TAPE
1923 && spclpt->c_flags & DR_COMPRESSED) {
1926 if (tpb->length > bufsize)
1927 errx(1, "Tape blocksize is too large, use "
1928 "\'-b %d\' ", tpb->length / TP_BSIZE);
1931 errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)",
1934 ntrec = i / TP_BSIZE;
1935 if (spclpt->c_type == TS_TAPE) {
1936 if (spclpt->c_flags & DR_COMPRESSED)
1938 if (spclpt->c_ntrec > ntrec)
1939 errx(1, "Tape blocksize is too large, use "
1940 "\'-b %d\' ", spclpt->c_ntrec);
1943 Vprintf(stdout, "Tape block size is %ld\n", ntrec);
1947 * Read a block of data handling all of the messy details.
1949 static int read_a_block(int fd, char *buf, size_t len, long *lengthread)
1957 i = rmtread(buf, size);
1960 i = read(fd, buf, size);
1963 break; /* EOD or error */
1966 break; /* block at a time for mt */
1969 *lengthread = len - size;
1988 setmagtapein(void) {
1989 struct mtget mt_stat;
1990 static int done = 0;
1995 /* need to know if input is really from a tape */
2001 magtapein = ioctl(mt, MTIOCGET, (char *)&mt_stat) == 0;
2004 Vprintf(stdout,"Input is from %s\n",
2005 magtapein ? "tape" :
2006 Vflag ? "multi-volume (no tape)" : "file/pipe");
2010 * Read the next block from the tape.
2011 * Check to see if it is one of several vintage headers.
2012 * If it is an old style header, convert it to a new style header.
2013 * If it is not any valid header, return an error.
2016 gethead(struct s_spcl *buf)
2024 char dummy[TP_BSIZE];
2031 u_int16_t c_inumber;
2036 u_int16_t odi_nlink;
2052 readtape((char *)buf);
2053 if (buf->c_magic != NFS_MAGIC) {
2054 if (swabi(buf->c_magic) != NFS_MAGIC)
2057 Vprintf(stdout, "Note: Doing Byte swapping\n");
2061 if (checksum((int *)buf) == FAIL)
2064 swabst((u_char *)"8i4s31i528bi192b2i", (u_char *)buf);
2067 readtape((char *)(&u_ospcl.s_ospcl));
2068 memset((char *)buf, 0, (long)TP_BSIZE);
2069 buf->c_type = u_ospcl.s_ospcl.c_type;
2070 buf->c_date = u_ospcl.s_ospcl.c_date;
2071 buf->c_ddate = u_ospcl.s_ospcl.c_ddate;
2072 buf->c_volume = u_ospcl.s_ospcl.c_volume;
2073 buf->c_tapea = u_ospcl.s_ospcl.c_tapea;
2074 buf->c_inumber = u_ospcl.s_ospcl.c_inumber;
2075 buf->c_checksum = u_ospcl.s_ospcl.c_checksum;
2076 buf->c_magic = u_ospcl.s_ospcl.c_magic;
2077 buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode;
2078 buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink;
2079 buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid;
2080 buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid;
2081 buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size;
2082 buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev;
2083 #if defined(__linux__) || defined(sunos)
2084 buf->c_dinode.di_atime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_atime;
2085 buf->c_dinode.di_mtime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_mtime;
2086 buf->c_dinode.di_ctime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_ctime;
2087 #else /* __linux__ || sunos */
2088 buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime;
2089 buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime;
2090 buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime;
2091 #endif /* __linux__ || sunos */
2092 buf->c_count = u_ospcl.s_ospcl.c_count;
2093 memmove(buf->c_addr, u_ospcl.s_ospcl.c_fill, (long)256);
2094 if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC ||
2095 checksum((int *)(&u_ospcl.s_ospcl)) == FAIL)
2097 buf->c_magic = NFS_MAGIC;
2100 if ((buf->c_dinode.di_size == 0 || buf->c_dinode.di_size > 0xfffffff) &&
2101 (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) {
2102 qcvt.qval = buf->c_dinode.di_size;
2103 if (qcvt.val[0] || qcvt.val[1]) {
2104 Vprintf(stdout, "Note: Doing Quad swapping\n");
2109 qcvt.qval = buf->c_dinode.di_size;
2111 qcvt.val[1] = qcvt.val[0];
2113 buf->c_dinode.di_size = qcvt.qval;
2117 switch (buf->c_type) {
2122 * Have to patch up missing information in bit map headers
2125 buf->c_dinode.di_size = buf->c_count * TP_BSIZE;
2126 if (buf->c_count > TP_NINDIR)
2129 for (i = 0; i < buf->c_count; i++)
2134 if ((buf->c_flags & DR_NEWINODEFMT) == 0)
2139 if (buf->c_flags & DR_INODEINFO) {
2140 memcpy(volinfo, buf->c_inos, TP_NINOS * sizeof(dump_ino_t));
2142 swabst((u_char *)"128i", (u_char *)volinfo);
2151 panic("gethead: unknown inode type %d\n", buf->c_type);
2155 * If we are restoring a filesystem with old format inodes,
2156 * copy the uid/gid to the new location.
2159 buf->c_dinode.di_uid = buf->c_dinode.di_ouid;
2160 buf->c_dinode.di_gid = buf->c_dinode.di_ogid;
2168 * Check that a header is where it belongs and predict the next header
2171 accthdr(struct s_spcl *header)
2173 static dump_ino_t previno = 0x7fffffff;
2174 static int prevtype;
2175 static long predict;
2178 if (header->c_type == TS_TAPE) {
2179 fprintf(stderr, "Volume header (%s inode format) ",
2180 oldinofmt ? "old" : "new");
2181 if (header->c_firstrec)
2182 fprintf(stderr, "begins with record %d",
2183 header->c_firstrec);
2184 fprintf(stderr, "\n");
2185 previno = 0x7fffffff;
2188 if (previno == 0x7fffffff)
2192 fprintf(stderr, "Dumped inodes map header");
2195 fprintf(stderr, "Used inodes map header");
2198 fprintf(stderr, "File header, ino %lu", (unsigned long)previno);
2201 fprintf(stderr, "File continuation header, ino %ld", (long)previno);
2204 fprintf(stderr, "End of tape header");
2207 if (predict != blksread - 1)
2208 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
2209 predict, blksread - 1);
2210 fprintf(stderr, "\n");
2213 if (header->c_type != TS_END)
2214 for (i = 0; i < header->c_count; i++)
2215 if (readmapflag || header->c_addr[i] != 0)
2219 prevtype = header->c_type;
2220 previno = header->c_inumber;
2224 * Find an inode header.
2225 * Complain if had to skip, and complain is set.
2228 findinode(struct s_spcl *header)
2230 static long skipcnt = 0;
2234 curfile.name = "<name unknown>";
2235 curfile.action = UNKNOWN;
2239 if (header->c_magic != NFS_MAGIC) {
2241 while (gethead(header) == FAIL ||
2242 header->c_date != dumpdate)
2245 switch (header->c_type) {
2249 * Skip up to the beginning of the next record
2251 for (i = 0; i < header->c_count; i++)
2252 if (header->c_addr[i])
2254 while (gethead(header) == FAIL ||
2255 header->c_date != dumpdate)
2260 curfile.dip = &header->c_dinode;
2261 curfile.ino = header->c_inumber;
2265 curfile.ino = maxino;
2269 curfile.name = "<file removal list>";
2273 curfile.name = "<file dump list>";
2277 panic("unexpected tape header\n");
2281 panic("unknown tape header type %d\n", spcl.c_type);
2285 } while (header->c_type == TS_ADDR);
2290 fprintf(stderr, "resync restore, skipped %ld blocks\n",
2300 j = sizeof(union u_spcl) / sizeof(int);
2307 /* What happens if we want to read restore tapes
2308 for a 16bit int machine??? */
2314 if (i != CHECKSUM) {
2315 fprintf(stderr, "Checksum error %o, inode %lu file %s\n", i,
2316 (unsigned long)curfile.ino, curfile.name);
2326 #include <varargs.h>
2331 msg(const char *fmt, ...)
2344 (void)vfprintf(stderr, fmt, ap);
2347 #endif /* RRESTORE */
2350 swab16(u_char *sp, int n)
2355 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
2362 swab32(u_char *sp, int n)
2367 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
2368 c = sp[1]; sp[1] = sp[2]; sp[2] = c;
2375 swab64(u_char *sp, int n)
2380 c = sp[0]; sp[0] = sp[7]; sp[7] = c;
2381 c = sp[1]; sp[1] = sp[6]; sp[6] = c;
2382 c = sp[2]; sp[2] = sp[5]; sp[5] = c;
2383 c = sp[3]; sp[3] = sp[4]; sp[4] = c;
2390 swabst(u_char *cp, u_char *sp)
2396 case '0': case '1': case '2': case '3': case '4':
2397 case '5': case '6': case '7': case '8': case '9':
2398 n = (n * 10) + (*cp++ - '0');
2401 case 's': case 'w': case 'h':
2419 default: /* Any other character, like 'b' counts as byte. */
2433 swabst((u_char *)"i", (u_char *)&x);
2441 swabst((u_char *)"l", (u_char *)&x);
2448 * get the current position of the tape
2451 GetTapePos(long long *pos)
2457 *pos = (long long) rmtseek(0, SEEK_CUR);
2466 err = (ioctl(mt, MTIOCPOS, &mtpos) < 0);
2467 *pos = (long long)mtpos;
2470 *pos = LSEEK(mt, 0, SEEK_CUR);
2476 fprintf(stdout, "[%ld] error: %d (getting tapepos: %lld)\n",
2477 (unsigned long)getpid(), err, *pos);
2483 typedef struct mt_pos {
2486 } MTPosRec, *MTPosPtr;
2489 * go to specified position on tape
2492 GotoTapePos(long long pos)
2498 err = (rmtseek((long)pos, SEEK_SET) < 0);
2505 buf.mt_count = (int) pos;
2506 err = (ioctl(mt, MTIOCTOP, &buf) < 0);
2509 pos = LSEEK(mt, pos, SEEK_SET);
2515 fprintf(stdout, "[%ld] error: %d (setting tapepos: %lld)\n",
2516 (unsigned long)getpid(), err, pos);
2523 * read next data from tape to re-sync
2526 ReReadFromTape(void)
2530 if (gethead(&spcl) == FAIL) {
2532 fprintf(stdout, "DEBUG 1 gethead failed\n");
2540 ReReadInodeFromTape(dump_ino_t theino)
2549 } while (!(spcl.c_inumber == theino && spcl.c_type == TS_INODE && spcl.c_date == dumpdate) && (cntloop < 32));
2551 fprintf(stderr, "%ld reads\n", cntloop);
2552 if (cntloop == 32) {
2553 fprintf(stderr, "DEBUG: bufsize %d\n", bufsize);
2554 fprintf(stderr, "DEBUG: ntrec %ld\n", ntrec);
2555 fprintf(stderr, "DEBUG: %ld reads\n", cntloop);
2561 #endif /* USE_QFA */
2564 RequestVol(long tnum)