2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 static char sccsid[] = "@(#)tape.c 8.9 (Berkeley) 5/1/95";
39 static const char rcsid[] =
43 #include <sys/param.h>
49 #include <ufs/ufs/dinode.h>
50 #include <protocols/dumprestore.h>
66 static long fssize = MAXBSIZE;
68 static int pipein = 0;
69 static int pipecmdin = 0;
70 static FILE *popenfp = NULL;
75 static union u_spcl endoftapemark;
76 static long blksread; /* blocks read since last header */
77 static int64_t tapeaddr = 0; /* current TP_BSIZE tape record */
78 static long tapesread;
79 static jmp_buf restart;
80 static int gettingfile = 0; /* restart has a valid frame */
81 static char *host = NULL;
82 static int readmapflag;
86 static char lnkbuf[MAXPATHLEN + 1];
89 int Bcvt; /* Swap Bytes */
91 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
93 static void accthdr(struct s_spcl *);
94 static int checksum(int *);
95 static void findinode(struct s_spcl *);
96 static void findtapeblksize(void);
97 static int gethead(struct s_spcl *);
98 static void readtape(char *);
99 static void setdumpnum(void);
100 static u_long swabl(u_long);
101 static u_char *swablong(u_char *, int);
102 static u_char *swabshort(u_char *, int);
103 static void terminateinput(void);
104 static void xtrfile(char *, long);
105 static void xtrlnkfile(char *, long);
106 static void xtrlnkskip(char *, long);
107 static void xtrmap(char *, long);
108 static void xtrmapskip(char *, long);
109 static void xtrskip(char *, long);
112 * Set up an input source
115 setinput(char *source, int ispipecommand)
121 newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC);
128 if (strchr(source, ':')) {
130 source = strchr(host, ':');
132 if (rmthost(host) == 0)
136 if (strcmp(source, "-") == 0) {
138 * Since input is coming from a pipe we must establish
139 * our own connection to the terminal.
141 terminal = fopen(_PATH_TTY, "r");
142 if (terminal == NULL) {
143 (void)fprintf(stderr, "cannot open %s: %s\n",
144 _PATH_TTY, strerror(errno));
145 terminal = fopen(_PATH_DEVNULL, "r");
146 if (terminal == NULL) {
147 (void)fprintf(stderr, "cannot open %s: %s\n",
148 _PATH_DEVNULL, strerror(errno));
154 setuid(getuid()); /* no longer need or want root privileges */
155 magtape = strdup(source);
156 if (magtape == NULL) {
157 fprintf(stderr, "Cannot allocate space for magtape buffer\n");
163 newtapebuf(long size)
165 static int tapebufsize = -1;
168 if (size <= tapebufsize)
172 tapebuf = malloc(size * TP_BSIZE);
173 if (tapebuf == NULL) {
174 fprintf(stderr, "Cannot allocate space for tape buffer\n");
181 * Verify that the tape drive can be accessed and
182 * that it actually is a dump tape.
190 vprintf(stdout, "Verify tape and initialize maps\n");
192 if (setenv("RESTORE_VOLUME", "1", 1) == -1) {
193 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
197 popenfp = popen(magtape, "r");
198 mt = popenfp ? fileno(popenfp) : -1;
202 mt = rmtopen(magtape, 0);
208 mt = open(magtape, O_RDONLY, 0);
210 fprintf(stderr, "%s: %s\n", magtape, strerror(errno));
216 if (!pipein && !bflag)
218 if (gethead(&spcl) == FAIL) {
219 fprintf(stderr, "Tape is not a dump tape\n");
223 endoftapemark.s_spcl.c_magic = FS_UFS2_MAGIC;
224 endoftapemark.s_spcl.c_type = TS_END;
225 ip = (int *)&endoftapemark;
226 j = sizeof(union u_spcl) / sizeof(int);
231 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
233 if (vflag || command == 't')
235 dumptime = _time64_to_time(spcl.c_ddate);
236 dumpdate = _time64_to_time(spcl.c_date);
237 if (stat(".", &stbuf) < 0) {
238 fprintf(stderr, "cannot stat .: %s\n", strerror(errno));
241 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
243 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
244 fssize = stbuf.st_blksize;
245 if (((fssize - 1) & fssize) != 0) {
246 fprintf(stderr, "bad block size %ld\n", fssize);
249 if (spcl.c_volume != 1) {
250 fprintf(stderr, "Tape is not volume 1 of the dump\n");
253 if (gethead(&spcl) == FAIL) {
254 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
255 panic("no header after volume mark!\n");
258 if (spcl.c_type != TS_CLRI) {
259 fprintf(stderr, "Cannot find file removal list\n");
262 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
263 dprintf(stdout, "maxino = %d\n", maxino);
264 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
266 panic("no memory for active inode map\n");
268 curfile.action = USING;
269 getfile(xtrmap, xtrmapskip);
270 if (spcl.c_type != TS_BITS) {
271 fprintf(stderr, "Cannot find file dump list\n");
274 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
275 if (map == (char *)NULL)
276 panic("no memory for file dump list\n");
278 curfile.action = USING;
279 getfile(xtrmap, xtrmapskip);
281 * If there may be whiteout entries on the tape, pretend that the
282 * whiteout inode exists, so that the whiteout entries can be
285 SETINO(WINO, dumpmap);
286 /* 'r' restores don't call getvol() for tape 1, so mark it as read. */
292 * Prompt user to load a new dump volume.
293 * "Nextvol" is the next suggested volume to use.
294 * This suggested volume is enforced when doing full
295 * or incremental restores, but can be overridden by
296 * the user when only extracting a subset of the files.
302 long i, newvol, savecnt;
303 union u_spcl tmpspcl;
304 # define tmpbuf tmpspcl.s_spcl
311 prevtapea = tapeaddr;
315 panic("Changing volumes on pipe input?\n");
316 /* Avoid looping if we couldn't ask the user. */
317 if (yflag || ferror(terminal) || feof(terminal))
330 done(1); /* pipes do not get a second chance */
331 if (command == 'R' || command == 'r' || curfile.action != SKIP)
335 while (newvol <= 0) {
336 if (tapesread == 0) {
337 fprintf(stderr, "%s%s%s%s%s%s%s",
338 "You have not read any tapes yet.\n",
339 "If you are extracting just a few files,",
340 " start with the last volume\n",
341 "and work towards the first; restore",
342 " can quickly skip tapes that\n",
343 "have no further files to extract.",
344 " Otherwise, begin with volume 1.\n");
346 fprintf(stderr, "You have read volumes");
348 for (i = 0; i < 32; i++)
349 if (tapesread & (1 << i)) {
350 fprintf(stderr, "%s%ld", buf, i + 1);
353 fprintf(stderr, "\n");
356 fprintf(stderr, "Specify next volume #: ");
357 (void) fflush(stderr);
358 if (fgets(buf, BUFSIZ, terminal) == NULL)
360 } while (buf[0] == '\n');
364 "Volume numbers are positive numerics\n");
367 if (newvol == volno) {
368 tapesread |= 1 << (volno - 1);
372 fprintf(stderr, "Mount tape volume %ld\n", newvol);
373 fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
374 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
375 (void) fflush(stderr);
376 if (fgets(buf, BUFSIZ, terminal) == NULL)
378 if (!strcmp(buf, "none\n")) {
382 if (buf[0] != '\n') {
383 (void) strcpy(magtape, buf);
384 magtape[strlen(magtape) - 1] = '\0';
387 char volno[sizeof("2147483647")];
390 (void)sprintf(volno, "%d", newvol);
391 if (setenv("RESTORE_VOLUME", volno, 1) == -1) {
392 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
396 popenfp = popen(magtape, "r");
397 mt = popenfp ? fileno(popenfp) : -1;
401 mt = rmtopen(magtape, 0);
404 mt = open(magtape, O_RDONLY, 0);
407 fprintf(stderr, "Cannot open %s\n", magtape);
415 if (gethead(&tmpbuf) == FAIL) {
416 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
417 fprintf(stderr, "tape is not dump tape\n");
421 if (tmpbuf.c_volume != volno) {
422 fprintf(stderr, "Wrong volume (%ld)\n", tmpbuf.c_volume);
426 if (_time64_to_time(tmpbuf.c_date) != dumpdate ||
427 _time64_to_time(tmpbuf.c_ddate) != dumptime) {
428 time_t t = _time64_to_time(tmpbuf.c_date);
429 fprintf(stderr, "Wrong dump date\n\tgot: %s", ctime(&t));
430 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
434 tapesread |= 1 << (volno - 1);
437 * If continuing from the previous volume, skip over any
438 * blocks read already at the end of the previous volume.
440 * If coming to this volume at random, skip to the beginning
441 * of the next record.
443 dprintf(stdout, "last rec %qd, tape starts with %qd\n", prevtapea,
445 if (tmpbuf.c_type == TS_TAPE) {
446 if (curfile.action != USING) {
448 * XXX Dump incorrectly sets c_count to 1 in the
449 * volume header of the first tape, so ignore
450 * c_count when volno == 1.
453 for (i = tmpbuf.c_count; i > 0; i--)
455 } else if (tmpbuf.c_tapea <= prevtapea) {
457 * Normally the value of c_tapea in the volume
458 * header is the record number of the header itself.
459 * However in the volume header following an EOT-
460 * terminated tape, it is the record number of the
461 * first continuation data block (dump bug?).
463 * The next record we want is `prevtapea + 1'.
465 i = prevtapea + 1 - tmpbuf.c_tapea;
466 dprintf(stderr, "Skipping %ld duplicate record%s.\n",
467 i, i > 1 ? "s" : "");
472 if (curfile.action == USING) {
474 panic("active file into volume 1\n");
477 (void) gethead(&spcl);
486 * Handle unexpected EOF.
492 if (gettingfile && curfile.action == USING) {
493 printf("Warning: %s %s\n",
494 "End-of-input encountered while extracting", curfile.name);
496 curfile.name = "<name unknown>";
497 curfile.action = UNKNOWN;
499 curfile.ino = maxino;
507 * handle multiple dumps per tape by skipping forward to the
515 if (dumpnum == 1 || volno != 1)
518 fprintf(stderr, "Cannot have multiple dumps on pipe input\n");
522 tcom.mt_count = dumpnum - 1;
525 rmtioctl(MTFSF, dumpnum - 1);
528 if (!pipecmdin && ioctl(mt, MTIOCTOP, (char *)&tcom) < 0)
529 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno));
536 t = _time64_to_time(spcl.c_date);
537 fprintf(stdout, "Dump date: %s", ctime(&t));
538 t = _time64_to_time(spcl.c_ddate);
539 fprintf(stdout, "Dumped from: %s",
540 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&t));
541 if (spcl.c_host[0] == '\0')
543 fprintf(stderr, "Level %ld dump of %s on %s:%s\n",
544 spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
545 fprintf(stderr, "Label: %s\n", spcl.c_label);
549 extractfile(char *name)
553 struct timeval mtimep[2], ctimep[2];
557 curfile.action = USING;
558 mtimep[0].tv_sec = curfile.atime_sec;
559 mtimep[0].tv_usec = curfile.atime_nsec / 1000;
560 mtimep[1].tv_sec = curfile.mtime_sec;
561 mtimep[1].tv_usec = curfile.mtime_nsec / 1000;
562 ctimep[0].tv_sec = curfile.atime_sec;
563 ctimep[0].tv_usec = curfile.atime_nsec / 1000;
564 ctimep[1].tv_sec = curfile.birthtime_sec;
565 ctimep[1].tv_usec = curfile.birthtime_nsec / 1000;
567 flags = curfile.file_flags;
568 switch (mode & IFMT) {
571 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
576 vprintf(stdout, "skipped socket %s\n", name);
582 ep = lookupname(name);
583 if (ep == NULL || ep->e_flags & EXTRACT)
584 panic("unextracted directory %s\n", name);
588 vprintf(stdout, "extract file %s\n", name);
589 return (genliteraldir(name, curfile.ino));
594 getfile(xtrlnkfile, xtrlnkskip);
597 "%s: zero length symbolic link (ignored)\n", name);
600 if (linkit(lnkbuf, name, SYMLINK) == GOOD) {
601 (void) lchown(name, curfile.uid, curfile.gid);
602 (void) lchmod(name, mode);
603 (void) lutimes(name, ctimep);
604 (void) lutimes(name, mtimep);
610 vprintf(stdout, "extract fifo %s\n", name);
617 if (mkfifo(name, mode) < 0) {
618 fprintf(stderr, "%s: cannot create fifo: %s\n",
619 name, strerror(errno));
623 (void) chown(name, curfile.uid, curfile.gid);
624 (void) chmod(name, mode);
625 (void) utimes(name, ctimep);
626 (void) utimes(name, mtimep);
627 (void) chflags(name, flags);
633 vprintf(stdout, "extract special file %s\n", name);
640 if (mknod(name, mode, (int)curfile.rdev) < 0) {
641 fprintf(stderr, "%s: cannot create special file: %s\n",
642 name, strerror(errno));
646 (void) chown(name, curfile.uid, curfile.gid);
647 (void) chmod(name, mode);
648 (void) utimes(name, ctimep);
649 (void) utimes(name, mtimep);
650 (void) chflags(name, flags);
655 vprintf(stdout, "extract file %s\n", name);
662 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
664 fprintf(stderr, "%s: cannot create file: %s\n",
665 name, strerror(errno));
669 (void) fchown(ofile, curfile.uid, curfile.gid);
670 (void) fchmod(ofile, mode);
671 getfile(xtrfile, xtrskip);
673 (void) utimes(name, ctimep);
674 (void) utimes(name, mtimep);
675 (void) chflags(name, flags);
682 * skip over bit maps on the tape
688 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
693 * skip over a file on the tape
699 curfile.action = SKIP;
700 getfile(xtrnull, xtrnull);
704 * Extract a file from the tape.
705 * When an allocated block is found it is passed to the fill function;
706 * when an unallocated block (hole) is found, a zeroed buffer is passed
707 * to the skip function.
710 getfile(void (*fill)(char *, long), void (*skip)(char *, long))
714 quad_t size = spcl.c_size;
715 static char clearedbuf[MAXBSIZE];
716 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
719 if (spcl.c_type == TS_END)
720 panic("ran off end of tape\n");
721 if (spcl.c_magic != FS_UFS2_MAGIC)
722 panic("not at beginning of a file\n");
723 if (!gettingfile && setjmp(restart) != 0)
727 for (i = 0; i < spcl.c_count; i++) {
728 if (readmapflag || spcl.c_addr[i]) {
729 readtape(&buf[curblk++][0]);
730 if (curblk == fssize / TP_BSIZE) {
731 (*fill)((char *)buf, (long)(size > TP_BSIZE ?
732 fssize : (curblk - 1) * TP_BSIZE + size));
737 (*fill)((char *)buf, (long)(size > TP_BSIZE ?
739 (curblk - 1) * TP_BSIZE + size));
742 (*skip)(clearedbuf, (long)(size > TP_BSIZE ?
745 if ((size -= TP_BSIZE) <= 0) {
746 for (i++; i < spcl.c_count; i++)
747 if (readmapflag || spcl.c_addr[i])
752 if (gethead(&spcl) == GOOD && size > 0) {
753 if (spcl.c_type == TS_ADDR)
756 "Missing address (header) block for %s at %ld blocks\n",
757 curfile.name, blksread);
760 (*fill)((char *)buf, (long)((curblk * TP_BSIZE) + size));
766 * Write out the next block of a file.
769 xtrfile(char *buf, long size)
774 if (write(ofile, buf, (int) size) == -1) {
776 "write error extracting inode %d, name %s\nwrite: %s\n",
777 curfile.ino, curfile.name, strerror(errno));
782 * Skip over a hole in a file.
786 xtrskip(char *buf, long size)
789 if (lseek(ofile, size, SEEK_CUR) == -1) {
791 "seek error extracting inode %d, name %s\nlseek: %s\n",
792 curfile.ino, curfile.name, strerror(errno));
798 * Collect the next block of a symbolic link.
801 xtrlnkfile(char *buf, long size)
805 if (pathlen > MAXPATHLEN) {
806 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n",
807 curfile.name, lnkbuf, buf, pathlen);
810 (void) strcat(lnkbuf, buf);
814 * Skip over a hole in a symbolic link (should never happen).
818 xtrlnkskip(char *buf, long size)
821 fprintf(stderr, "unallocated block in symbolic link %s\n",
827 * Collect the next block of a bit map.
830 xtrmap(char *buf, long size)
833 memmove(map, buf, size);
838 * Skip over a hole in a bit map (should never happen).
842 xtrmapskip(char *buf, long size)
845 panic("hole in map\n");
850 * Noop, when an extraction function is not needed.
854 xtrnull(char *buf, long size)
861 * Read TP_BSIZE blocks from the input.
862 * Handle read errors, and end of media.
868 int cnt, seek_failed;
870 if (blkcnt < numtrec) {
871 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
876 for (i = 0; i < ntrec; i++)
877 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
880 cnt = ntrec * TP_BSIZE;
885 i = rmtread(&tapebuf[rd], cnt);
888 i = read(mt, &tapebuf[rd], cnt);
890 * Check for mid-tape short read error.
891 * If found, skip rest of buffer and start with the next.
893 if (!pipein && numtrec < ntrec && i > 0) {
894 dprintf(stdout, "mid-media short read error.\n");
898 * Handle partial block read.
900 if (pipein && i == 0 && rd > 0)
902 else if (i > 0 && i != ntrec * TP_BSIZE) {
911 * Short read. Process the blocks read.
913 if (i % TP_BSIZE != 0)
915 "partial block read: %ld should be %ld\n",
916 i, ntrec * TP_BSIZE);
917 numtrec = i / TP_BSIZE;
924 fprintf(stderr, "Tape read error while ");
925 switch (curfile.action) {
927 fprintf(stderr, "trying to set up tape\n");
930 fprintf(stderr, "trying to resynchronize\n");
933 fprintf(stderr, "restoring %s\n", curfile.name);
936 fprintf(stderr, "skipping over inode %d\n",
940 if (!yflag && !reply("continue"))
942 i = ntrec * TP_BSIZE;
943 memset(tapebuf, 0, i);
946 seek_failed = (rmtseek(i, 1) < 0);
949 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
953 "continuation failed: %s\n", strerror(errno));
958 * Handle end of tape.
961 vprintf(stdout, "End-of-tape encountered\n");
970 if (rd % TP_BSIZE != 0)
971 panic("partial block read: %d should be %d\n",
972 rd, ntrec * TP_BSIZE);
974 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE);
977 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
983 findtapeblksize(void)
987 for (i = 0; i < ntrec; i++)
988 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
992 i = rmtread(tapebuf, ntrec * TP_BSIZE);
995 i = read(mt, tapebuf, ntrec * TP_BSIZE);
998 fprintf(stderr, "tape read error: %s\n", strerror(errno));
1001 if (i % TP_BSIZE != 0) {
1002 fprintf(stderr, "Tape block size (%ld) %s (%d)\n",
1003 i, "is not a multiple of dump block size", TP_BSIZE);
1006 ntrec = i / TP_BSIZE;
1008 vprintf(stdout, "Tape block size is %ld\n", ntrec);
1030 * Read the next block from the tape.
1031 * If it is not any valid header, return an error.
1034 gethead(struct s_spcl *buf)
1038 readtape((char *)buf);
1039 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) {
1040 if (buf->c_magic == OFS_MAGIC) {
1042 "Format of dump tape is too old. Must use\n");
1044 "a version of restore from before 2002.\n");
1047 if (swabl(buf->c_magic) != FS_UFS2_MAGIC &&
1048 buf->c_magic != NFS_MAGIC) {
1049 if (buf->c_magic == OFS_MAGIC) {
1051 "Format of dump tape is too old. Must use\n");
1053 "a version of restore from before 2002.\n");
1058 vprintf(stdout, "Note: Doing Byte swapping\n");
1062 if (checksum((int *)buf) == FAIL)
1065 swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf);
1066 swabst((u_char *)"l",(u_char *) &buf->c_level);
1067 swabst((u_char *)"2l4q",(u_char *) &buf->c_flags);
1071 switch (buf->c_type) {
1076 * Have to patch up missing information in bit map headers
1079 buf->c_size = buf->c_count * TP_BSIZE;
1080 if (buf->c_count > TP_NINDIR)
1083 for (i = 0; i < buf->c_count; i++)
1094 * For old dump tapes, have to copy up old fields to
1097 if (buf->c_magic == NFS_MAGIC) {
1098 buf->c_tapea = buf->c_old_tapea;
1099 buf->c_firstrec = buf->c_old_firstrec;
1100 buf->c_date = _time32_to_time(buf->c_old_date);
1101 buf->c_ddate = _time32_to_time(buf->c_old_ddate);
1102 buf->c_atime = _time32_to_time(buf->c_old_atime);
1103 buf->c_mtime = _time32_to_time(buf->c_old_mtime);
1111 panic("gethead: unknown inode type %d\n", buf->c_type);
1114 buf->c_magic = FS_UFS2_MAGIC;
1115 tapeaddr = buf->c_tapea;
1122 * Check that a header is where it belongs and predict the next header
1125 accthdr(struct s_spcl *header)
1127 static ino_t previno = 0x7fffffff;
1128 static int prevtype;
1129 static long predict;
1132 if (header->c_type == TS_TAPE) {
1133 fprintf(stderr, "Volume header ");
1134 if (header->c_firstrec)
1135 fprintf(stderr, "begins with record %qd",
1136 header->c_firstrec);
1137 fprintf(stderr, "\n");
1138 previno = 0x7fffffff;
1141 if (previno == 0x7fffffff)
1145 fprintf(stderr, "Dumped inodes map header");
1148 fprintf(stderr, "Used inodes map header");
1151 fprintf(stderr, "File header, ino %d", previno);
1154 fprintf(stderr, "File continuation header, ino %d", previno);
1157 fprintf(stderr, "End of tape header");
1160 if (predict != blksread - 1)
1161 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
1162 predict, blksread - 1);
1163 fprintf(stderr, "\n");
1166 if (header->c_type != TS_END)
1167 for (i = 0; i < header->c_count; i++)
1168 if (readmapflag || header->c_addr[i] != 0)
1172 prevtype = header->c_type;
1173 previno = header->c_inumber;
1177 * Find an inode header.
1178 * Complain if had to skip.
1181 findinode(struct s_spcl *header)
1183 static long skipcnt = 0;
1188 curfile.name = "<name unknown>";
1189 curfile.action = UNKNOWN;
1193 htype = header->c_type;
1198 * Skip up to the beginning of the next record
1200 for (i = 0; i < header->c_count; i++)
1201 if (header->c_addr[i])
1203 while (gethead(header) == FAIL ||
1204 _time64_to_time(header->c_date) != dumpdate)
1209 curfile.mode = header->c_mode;
1210 curfile.uid = header->c_uid;
1211 curfile.gid = header->c_gid;
1212 curfile.file_flags = header->c_file_flags;
1213 curfile.rdev = header->c_rdev;
1214 curfile.atime_sec = header->c_atime;
1215 curfile.atime_nsec = header->c_atimensec;
1216 curfile.mtime_sec = header->c_mtime;
1217 curfile.mtime_nsec = header->c_mtimensec;
1218 curfile.birthtime_sec = header->c_birthtime;
1219 curfile.birthtime_nsec = header->c_birthtimensec;
1220 curfile.size = header->c_size;
1221 curfile.ino = header->c_inumber;
1225 /* If we missed some tapes, get another volume. */
1226 if (tapesread & (tapesread + 1)) {
1230 curfile.ino = maxino;
1234 curfile.name = "<file removal list>";
1238 curfile.name = "<file dump list>";
1242 panic("unexpected tape header\n");
1246 panic("unknown tape header type %d\n", spcl.c_type);
1250 } while (htype == TS_ADDR);
1252 fprintf(stderr, "resync restore, skipped %ld blocks\n",
1262 j = sizeof(union u_spcl) / sizeof(int);
1269 /* What happens if we want to read restore tapes
1270 for a 16bit int machine??? */
1276 if (i != CHECKSUM) {
1277 fprintf(stderr, "Checksum error %o, inode %d file %s\n", i,
1278 curfile.ino, curfile.name);
1288 msg(const char *fmt, ...)
1292 (void)vfprintf(stderr, fmt, ap);
1295 #endif /* RRESTORE */
1298 swabshort(u_char *sp, int n)
1303 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
1310 swablong(u_char *sp, int n)
1315 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
1316 c = sp[2]; sp[2] = sp[1]; sp[1] = c;
1323 swabquad(u_char *sp, int n)
1328 c = sp[0]; sp[0] = sp[7]; sp[7] = c;
1329 c = sp[1]; sp[1] = sp[6]; sp[6] = c;
1330 c = sp[2]; sp[2] = sp[5]; sp[5] = c;
1331 c = sp[3]; sp[3] = sp[4]; sp[4] = c;
1338 swabst(u_char *cp, u_char *sp)
1344 case '0': case '1': case '2': case '3': case '4':
1345 case '5': case '6': case '7': case '8': case '9':
1346 n = (n * 10) + (*cp++ - '0');
1349 case 's': case 'w': case 'h':
1352 sp = swabshort(sp, n);
1358 sp = swablong(sp, n);
1364 sp = swabquad(sp, n);
1374 fprintf(stderr, "Unknown conversion character: %c\n",
1387 swabst((u_char *)"l", (u_char *)&x);