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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)tape.c 8.9 (Berkeley) 5/1/95
39 * $FreeBSD: src/sbin/restore/tape.c,v 1.16.2.8 2002/06/30 22:57:52 iedowse Exp $
40 * $DragonFly: src/sbin/restore/tape.c,v 1.9 2005/11/06 12:49:25 swildner Exp $
43 #include <sys/param.h>
49 #include <vfs/ufs/dinode.h>
50 #include <protocols/dumprestore.h>
64 static long fssize = MAXBSIZE;
66 static int pipein = 0;
71 static union u_spcl endoftapemark;
72 static long blksread; /* blocks read since last header */
73 static long tapeaddr = 0; /* current TP_BSIZE tape record */
74 static long tapesread;
75 static jmp_buf restart;
76 static int gettingfile = 0; /* restart has a valid frame */
77 static char *host = NULL;
81 static char lnkbuf[MAXPATHLEN + 1];
84 int oldinofmt; /* old inode format conversion required */
85 int Bcvt; /* Swap Bytes (for CCI or sun) */
86 static int Qcvt; /* Swap quads (for sun) */
88 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
90 static void accthdr(struct s_spcl *);
91 static int checksum(int *);
92 static void findinode(struct s_spcl *);
93 static void findtapeblksize(void);
94 static int gethead(struct s_spcl *);
95 static void readtape(char *);
96 static void setdumpnum(void);
97 static u_long swabl(u_long);
98 static u_char *swablong(u_char *, int);
99 static u_char *swabshort(u_char *, int);
100 static void terminateinput(void);
101 static void xtrfile(char *, long);
102 static void xtrlnkfile(char *, long);
103 static void xtrlnkskip(char *, long);
104 static void xtrmap(char *, long);
105 static void xtrmapskip(char *, long);
106 static void xtrskip(char *, long);
108 static int readmapflag;
111 * Set up an input source
114 setinput(char *source)
120 newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC);
124 if (strchr(source, ':')) {
126 source = strchr(host, ':');
128 if (rmthost(host) == 0)
132 if (strcmp(source, "-") == 0) {
134 * Since input is coming from a pipe we must establish
135 * our own connection to the terminal.
137 terminal = fopen(_PATH_TTY, "r");
138 if (terminal == NULL) {
139 fprintf(stderr, "cannot open %s: %s\n",
140 _PATH_TTY, strerror(errno));
141 terminal = fopen(_PATH_DEVNULL, "r");
142 if (terminal == NULL) {
143 fprintf(stderr, "cannot open %s: %s\n",
144 _PATH_DEVNULL, strerror(errno));
150 setuid(getuid()); /* no longer need or want root privileges */
151 magtape = strdup(source);
152 if (magtape == NULL) {
153 fprintf(stderr, "Cannot allocate space for magtape buffer\n");
159 newtapebuf(long size)
161 static long tapebufsize = -1;
164 if (size <= tapebufsize)
168 tapebuf = malloc(size * TP_BSIZE);
169 if (tapebuf == NULL) {
170 fprintf(stderr, "Cannot allocate space for tape buffer\n");
177 * Verify that the tape drive can be accessed and
178 * that it actually is a dump tape.
186 vprintf(stdout, "Verify tape and initialize maps\n");
189 mt = rmtopen(magtape, 0);
195 mt = open(magtape, O_RDONLY, 0);
197 fprintf(stderr, "%s: %s\n", magtape, strerror(errno));
203 if (!pipein && !bflag)
205 if (gethead(&spcl) == FAIL) {
206 blkcnt--; /* push back this block */
209 if (gethead(&spcl) == FAIL) {
210 fprintf(stderr, "Tape is not a dump tape\n");
213 fprintf(stderr, "Converting to new file system format.\n");
216 endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC;
217 endoftapemark.s_spcl.c_type = TS_END;
218 ip = (int *)&endoftapemark;
219 j = sizeof(union u_spcl) / sizeof(int);
224 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
226 if (vflag || command == 't')
228 dumptime = spcl.c_ddate;
229 dumpdate = spcl.c_date;
230 if (stat(".", &stbuf) < 0) {
231 fprintf(stderr, "cannot stat .: %s\n", strerror(errno));
234 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
236 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
237 fssize = stbuf.st_blksize;
238 if (((fssize - 1) & fssize) != 0) {
239 fprintf(stderr, "bad block size %ld\n", fssize);
242 if (spcl.c_volume != 1) {
243 fprintf(stderr, "Tape is not volume 1 of the dump\n");
246 if (gethead(&spcl) == FAIL) {
247 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
248 panic("no header after volume mark!\n");
251 if (spcl.c_type != TS_CLRI) {
252 fprintf(stderr, "Cannot find file removal list\n");
255 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
256 dprintf(stdout, "maxino = %d\n", maxino);
257 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
259 panic("no memory for active inode map\n");
261 curfile.action = USING;
262 getfile(xtrmap, xtrmapskip);
263 if (spcl.c_type != TS_BITS) {
264 fprintf(stderr, "Cannot find file dump list\n");
267 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
268 if (map == (char *)NULL)
269 panic("no memory for file dump list\n");
271 curfile.action = USING;
272 getfile(xtrmap, xtrmapskip);
274 * If there may be whiteout entries on the tape, pretend that the
275 * whiteout inode exists, so that the whiteout entries can be
279 SETINO(WINO, dumpmap);
280 /* 'r' restores don't call getvol() for tape 1, so mark it as read. */
286 * Prompt user to load a new dump volume.
287 * "Nextvol" is the next suggested volume to use.
288 * This suggested volume is enforced when doing full
289 * or incremental restores, but can be overridden by
290 * the user when only extracting a subset of the files.
295 long newvol = 0, prevtapea, savecnt, i;
296 union u_spcl tmpspcl;
297 # define tmpbuf tmpspcl.s_spcl
304 prevtapea = tapeaddr;
308 panic("Changing volumes on pipe input?\n");
309 /* Avoid looping if we couldn't ask the user. */
310 if (yflag || ferror(terminal) || feof(terminal))
319 done(1); /* pipes do not get a second chance */
320 if (command == 'R' || command == 'r' || curfile.action != SKIP)
324 while (newvol <= 0) {
325 if (tapesread == 0) {
326 fprintf(stderr, "%s%s%s%s%s%s%s",
327 "You have not read any tapes yet.\n",
328 "If you are extracting just a few files,",
329 " start with the last volume\n",
330 "and work towards the first; restore",
331 " can quickly skip tapes that\n",
332 "have no further files to extract.",
333 " Otherwise, begin with volume 1.\n");
335 fprintf(stderr, "You have read volumes");
337 for (i = 0; i < 32; i++)
338 if (tapesread & (1 << i)) {
339 fprintf(stderr, "%s%ld", buf, i + 1);
342 fprintf(stderr, "\n");
345 fprintf(stderr, "Specify next volume #: ");
347 if (fgets(buf, BUFSIZ, terminal) == NULL)
349 } while (buf[0] == '\n');
353 "Volume numbers are positive numerics\n");
356 if (newvol == volno) {
357 tapesread |= 1 << (volno - 1);
361 fprintf(stderr, "Mount tape volume %ld\n", newvol);
362 fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
363 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
365 if (fgets(buf, BUFSIZ, terminal) == NULL)
367 if (!strcmp(buf, "none\n")) {
371 if (buf[0] != '\n') {
372 strcpy(magtape, buf);
373 magtape[strlen(magtape) - 1] = '\0';
377 mt = rmtopen(magtape, 0);
380 mt = open(magtape, O_RDONLY, 0);
383 fprintf(stderr, "Cannot open %s\n", magtape);
391 if (gethead(&tmpbuf) == FAIL) {
392 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
393 fprintf(stderr, "tape is not dump tape\n");
397 if (tmpbuf.c_volume != volno) {
398 fprintf(stderr, "Wrong volume (%ld)\n", (long)tmpbuf.c_volume);
402 if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) {
403 fprintf(stderr, "Wrong dump date\n\tgot: %s",
404 ctime(&tmpbuf.c_date));
405 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
409 tapesread |= 1 << (volno - 1);
412 * If continuing from the previous volume, skip over any
413 * blocks read already at the end of the previous volume.
415 * If coming to this volume at random, skip to the beginning
416 * of the next record.
418 dprintf(stdout, "last rec %ld, tape starts with %ld\n", prevtapea,
419 (long)tmpbuf.c_tapea);
420 if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) {
421 if (curfile.action != USING) {
423 * XXX Dump incorrectly sets c_count to 1 in the
424 * volume header of the first tape, so ignore
425 * c_count when volno == 1.
428 for (i = tmpbuf.c_count; i > 0; i--)
430 } else if (tmpbuf.c_tapea <= prevtapea) {
432 * Normally the value of c_tapea in the volume
433 * header is the record number of the header itself.
434 * However in the volume header following an EOT-
435 * terminated tape, it is the record number of the
436 * first continuation data block (dump bug?).
438 * The next record we want is `prevtapea + 1'.
440 i = prevtapea + 1 - tmpbuf.c_tapea;
441 dprintf(stderr, "Skipping %ld duplicate record%s.\n",
442 i, i > 1 ? "s" : "");
447 if (curfile.action == USING) {
449 panic("active file into volume 1\n");
461 * Handle unexpected EOF.
467 if (gettingfile && curfile.action == USING) {
468 printf("Warning: %s %s\n",
469 "End-of-input encountered while extracting", curfile.name);
471 curfile.name = "<name unknown>";
472 curfile.action = UNKNOWN;
474 curfile.ino = maxino;
482 * handle multiple dumps per tape by skipping forward to the
490 if (dumpnum == 1 || volno != 1)
493 fprintf(stderr, "Cannot have multiple dumps on pipe input\n");
497 tcom.mt_count = dumpnum - 1;
500 rmtioctl(MTFSF, dumpnum - 1);
503 if (ioctl(mt, MTIOCTOP, (char *)&tcom) < 0)
504 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno));
510 fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date));
511 fprintf(stdout, "Dumped from: %s",
512 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate));
513 if (spcl.c_host[0] == '\0')
515 fprintf(stderr, "Level %ld dump of %s on %s:%s\n",
516 (long)spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
517 fprintf(stderr, "Label: %s\n", spcl.c_label);
521 extractfile(char *name)
527 struct timeval timep[2];
531 curfile.action = USING;
532 timep[0].tv_sec = curfile.dip->di_atime;
533 timep[0].tv_usec = curfile.dip->di_atimensec / 1000;
534 timep[1].tv_sec = curfile.dip->di_mtime;
535 timep[1].tv_usec = curfile.dip->di_mtimensec / 1000;
536 uid = curfile.dip->di_uid;
537 gid = curfile.dip->di_gid;
538 mode = curfile.dip->di_mode;
539 flags = curfile.dip->di_flags;
540 switch (mode & IFMT) {
543 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
548 vprintf(stdout, "skipped socket %s\n", name);
554 ep = lookupname(name);
555 if (ep == NULL || ep->e_flags & EXTRACT)
556 panic("unextracted directory %s\n", name);
560 vprintf(stdout, "extract file %s\n", name);
561 return (genliteraldir(name, curfile.ino));
566 getfile(xtrlnkfile, xtrlnkskip);
569 "%s: zero length symbolic link (ignored)\n", name);
572 if (linkit(lnkbuf, name, SYMLINK) == GOOD) {
573 lchown(name, uid, gid);
575 lutimes(name, timep);
581 vprintf(stdout, "extract fifo %s\n", name);
588 if (mkfifo(name, mode) < 0) {
589 fprintf(stderr, "%s: cannot create fifo: %s\n",
590 name, strerror(errno));
594 chown(name, uid, gid);
597 chflags(name, flags);
603 vprintf(stdout, "extract special file %s\n", name);
610 if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
611 fprintf(stderr, "%s: cannot create special file: %s\n",
612 name, strerror(errno));
616 chown(name, uid, gid);
619 chflags(name, flags);
624 vprintf(stdout, "extract file %s\n", name);
631 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
633 fprintf(stderr, "%s: cannot create file: %s\n",
634 name, strerror(errno));
638 fchown(ofile, uid, gid);
640 getfile(xtrfile, xtrskip);
643 chflags(name, flags);
650 * skip over bit maps on the tape
656 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
661 * skip over a file on the tape
667 curfile.action = SKIP;
668 getfile(xtrnull, xtrnull);
672 * Extract a file from the tape.
673 * When an allocated block is found it is passed to the fill function;
674 * when an unallocated block (hole) is found, a zeroed buffer is passed
675 * to the skip function.
678 getfile(void (*fill) (char *, long), void (*skip) (char *, long))
682 quad_t size = spcl.c_dinode.di_size;
683 static char clearedbuf[MAXBSIZE];
684 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
687 if (spcl.c_type == TS_END)
688 panic("ran off end of tape\n");
689 if (spcl.c_magic != NFS_MAGIC)
690 panic("not at beginning of a file\n");
691 if (!gettingfile && setjmp(restart) != 0)
695 for (i = 0; i < spcl.c_count; i++) {
696 if (readmapflag || spcl.c_addr[i]) {
697 readtape(&buf[curblk++][0]);
698 if (curblk == fssize / TP_BSIZE) {
699 (*fill)((char *)buf, (long)(size > TP_BSIZE ?
700 fssize : (curblk - 1) * TP_BSIZE + size));
705 (*fill)((char *)buf, (long)(size > TP_BSIZE ?
707 (curblk - 1) * TP_BSIZE + size));
710 (*skip)(clearedbuf, (long)(size > TP_BSIZE ?
713 if ((size -= TP_BSIZE) <= 0) {
714 for (i++; i < spcl.c_count; i++)
715 if (readmapflag || spcl.c_addr[i])
720 if (gethead(&spcl) == GOOD && size > 0) {
721 if (spcl.c_type == TS_ADDR)
724 "Missing address (header) block for %s at %ld blocks\n",
725 curfile.name, blksread);
728 (*fill)((char *)buf, (long)((curblk * TP_BSIZE) + size));
734 * Write out the next block of a file.
737 xtrfile(char *buf, long size)
742 if (write(ofile, buf, (int) size) == -1) {
744 "write error extracting inode %d, name %s\nwrite: %s\n",
745 curfile.ino, curfile.name, strerror(errno));
750 * Skip over a hole in a file.
754 xtrskip(char *buf, long size)
757 if (lseek(ofile, size, SEEK_CUR) == -1) {
759 "seek error extracting inode %d, name %s\nlseek: %s\n",
760 curfile.ino, curfile.name, strerror(errno));
766 * Collect the next block of a symbolic link.
769 xtrlnkfile(char *buf, long size)
773 if (pathlen > MAXPATHLEN) {
774 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n",
775 curfile.name, lnkbuf, buf, pathlen);
782 * Skip over a hole in a symbolic link (should never happen).
786 xtrlnkskip(char *buf, long size)
789 fprintf(stderr, "unallocated block in symbolic link %s\n",
795 * Collect the next block of a bit map.
798 xtrmap(char *buf, long size)
801 memmove(map, buf, size);
806 * Skip over a hole in a bit map (should never happen).
810 xtrmapskip(char *buf, long size)
813 panic("hole in map\n");
818 * Noop, when an extraction function is not needed.
822 xtrnull(char *buf, long size)
829 * Read TP_BSIZE blocks from the input.
830 * Handle read errors, and end of media.
836 int cnt, seek_failed;
838 if (blkcnt < numtrec) {
839 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
844 for (i = 0; i < ntrec; i++)
845 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
848 cnt = ntrec * TP_BSIZE;
853 i = rmtread(&tapebuf[rd], cnt);
856 i = read(mt, &tapebuf[rd], cnt);
858 * Check for mid-tape short read error.
859 * If found, skip rest of buffer and start with the next.
861 if (!pipein && numtrec < ntrec && i > 0) {
862 dprintf(stdout, "mid-media short read error.\n");
866 * Handle partial block read.
868 if (pipein && i == 0 && rd > 0)
870 else if (i > 0 && i != ntrec * TP_BSIZE) {
879 * Short read. Process the blocks read.
881 if (i % TP_BSIZE != 0)
883 "partial block read: %ld should be %ld\n",
884 i, ntrec * TP_BSIZE);
885 numtrec = i / TP_BSIZE;
892 fprintf(stderr, "Tape read error while ");
893 switch (curfile.action) {
895 fprintf(stderr, "trying to set up tape\n");
898 fprintf(stderr, "trying to resynchronize\n");
901 fprintf(stderr, "restoring %s\n", curfile.name);
904 fprintf(stderr, "skipping over inode %d\n",
908 if (!yflag && !reply("continue"))
910 i = ntrec * TP_BSIZE;
911 memset(tapebuf, 0, i);
914 seek_failed = (rmtseek(i, 1) < 0);
917 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
921 "continuation failed: %s\n", strerror(errno));
926 * Handle end of tape.
929 vprintf(stdout, "End-of-tape encountered\n");
938 if (rd % TP_BSIZE != 0)
939 panic("partial block read: %d should be %d\n",
940 rd, ntrec * TP_BSIZE);
942 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE);
945 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
951 findtapeblksize(void)
955 for (i = 0; i < ntrec; i++)
956 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
960 i = rmtread(tapebuf, ntrec * TP_BSIZE);
963 i = read(mt, tapebuf, ntrec * TP_BSIZE);
966 fprintf(stderr, "tape read error: %s\n", strerror(errno));
969 if (i % TP_BSIZE != 0) {
970 fprintf(stderr, "Tape block size (%ld) %s (%d)\n",
971 i, "is not a multiple of dump block size", TP_BSIZE);
974 ntrec = i / TP_BSIZE;
976 vprintf(stdout, "Tape block size is %ld\n", ntrec);
994 * Read the next block from the tape.
995 * Check to see if it is one of several vintage headers.
996 * If it is an old style header, convert it to a new style header.
997 * If it is not any valid header, return an error.
1000 gethead(struct s_spcl *buf)
1008 char dummy[TP_BSIZE];
1019 unsigned short odi_mode;
1036 readtape((char *)buf);
1037 if (buf->c_magic != NFS_MAGIC) {
1038 if (swabl(buf->c_magic) != NFS_MAGIC)
1041 vprintf(stdout, "Note: Doing Byte swapping\n");
1045 if (checksum((int *)buf) == FAIL)
1048 swabst((u_char *)"8l4s31l", (u_char *)buf);
1049 swabst((u_char *)"l",(u_char *) &buf->c_level);
1050 swabst((u_char *)"2l",(u_char *) &buf->c_flags);
1054 readtape((char *)(&u_ospcl.s_ospcl));
1055 memset(buf, 0, (long)TP_BSIZE);
1056 buf->c_type = u_ospcl.s_ospcl.c_type;
1057 buf->c_date = u_ospcl.s_ospcl.c_date;
1058 buf->c_ddate = u_ospcl.s_ospcl.c_ddate;
1059 buf->c_volume = u_ospcl.s_ospcl.c_volume;
1060 buf->c_tapea = u_ospcl.s_ospcl.c_tapea;
1061 buf->c_inumber = u_ospcl.s_ospcl.c_inumber;
1062 buf->c_checksum = u_ospcl.s_ospcl.c_checksum;
1063 buf->c_magic = u_ospcl.s_ospcl.c_magic;
1064 buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode;
1065 buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink;
1066 buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid;
1067 buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid;
1068 buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size;
1069 buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev;
1070 buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime;
1071 buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime;
1072 buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime;
1073 buf->c_count = u_ospcl.s_ospcl.c_count;
1074 memmove(buf->c_addr, u_ospcl.s_ospcl.c_addr, (long)256);
1075 if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC ||
1076 checksum((int *)(&u_ospcl.s_ospcl)) == FAIL)
1078 buf->c_magic = NFS_MAGIC;
1081 if ((buf->c_dinode.di_size == 0 || buf->c_dinode.di_size > 0xfffffff) &&
1082 (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) {
1083 qcvt.qval = buf->c_dinode.di_size;
1084 if (qcvt.val[0] || qcvt.val[1]) {
1085 printf("Note: Doing Quad swapping\n");
1090 qcvt.qval = buf->c_dinode.di_size;
1092 qcvt.val[1] = qcvt.val[0];
1094 buf->c_dinode.di_size = qcvt.qval;
1098 switch (buf->c_type) {
1103 * Have to patch up missing information in bit map headers
1106 buf->c_dinode.di_size = buf->c_count * TP_BSIZE;
1107 if (buf->c_count > TP_NINDIR)
1110 for (i = 0; i < buf->c_count; i++)
1115 if ((buf->c_flags & DR_NEWINODEFMT) == 0)
1127 panic("gethead: unknown inode type %d\n", buf->c_type);
1131 * If we are restoring a filesystem with old format inodes,
1132 * copy the uid/gid to the new location.
1135 buf->c_dinode.di_uid = buf->c_dinode.di_ouid;
1136 buf->c_dinode.di_gid = buf->c_dinode.di_ogid;
1138 tapeaddr = buf->c_tapea;
1145 * Check that a header is where it belongs and predict the next header
1148 accthdr(struct s_spcl *header)
1150 static ufs1_ino_t previno = 0x7fffffff;
1151 static int prevtype;
1152 static long predict;
1155 if (header->c_type == TS_TAPE) {
1156 fprintf(stderr, "Volume header (%s inode format) ",
1157 oldinofmt ? "old" : "new");
1158 if (header->c_firstrec)
1159 fprintf(stderr, "begins with record %ld",
1160 (long)header->c_firstrec);
1161 fprintf(stderr, "\n");
1162 previno = 0x7fffffff;
1165 if (previno == 0x7fffffff)
1169 fprintf(stderr, "Dumped inodes map header");
1172 fprintf(stderr, "Used inodes map header");
1175 fprintf(stderr, "File header, ino %d", previno);
1178 fprintf(stderr, "File continuation header, ino %d", previno);
1181 fprintf(stderr, "End of tape header");
1184 if (predict != blksread - 1)
1185 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
1186 predict, blksread - 1);
1187 fprintf(stderr, "\n");
1190 if (header->c_type != TS_END)
1191 for (i = 0; i < header->c_count; i++)
1192 if (readmapflag || header->c_addr[i] != 0)
1196 prevtype = header->c_type;
1197 previno = header->c_inumber;
1201 * Find an inode header.
1202 * Complain if had to skip.
1205 findinode(struct s_spcl *header)
1207 static long skipcnt = 0;
1212 curfile.name = "<name unknown>";
1213 curfile.action = UNKNOWN;
1217 if (header->c_magic != NFS_MAGIC) {
1219 while (gethead(header) == FAIL ||
1220 header->c_date != dumpdate)
1223 htype = header->c_type;
1228 * Skip up to the beginning of the next record
1230 for (i = 0; i < header->c_count; i++)
1231 if (header->c_addr[i])
1233 while (gethead(header) == FAIL ||
1234 header->c_date != dumpdate)
1239 curfile.dip = &header->c_dinode;
1240 curfile.ino = header->c_inumber;
1244 /* If we missed some tapes, get another volume. */
1245 if (tapesread & (tapesread + 1)) {
1249 curfile.ino = maxino;
1253 curfile.name = "<file removal list>";
1257 curfile.name = "<file dump list>";
1261 panic("unexpected tape header\n");
1265 panic("unknown tape header type %d\n", spcl.c_type);
1269 } while (htype == TS_ADDR);
1271 fprintf(stderr, "resync restore, skipped %ld blocks\n",
1281 j = sizeof(union u_spcl) / sizeof(int);
1288 /* What happens if we want to read restore tapes
1289 for a 16bit int machine??? */
1295 if (i != CHECKSUM) {
1296 fprintf(stderr, "Checksum error %o, inode %d file %s\n", i,
1297 curfile.ino, curfile.name);
1307 msg(const char *fmt, ...)
1311 vfprintf(stderr, fmt, ap);
1314 #endif /* RRESTORE */
1317 swabshort(u_char *sp, int n)
1322 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
1329 swablong(u_char *sp, int n)
1334 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
1335 c = sp[2]; sp[2] = sp[1]; sp[1] = c;
1342 swabst(u_char *cp, u_char *sp)
1348 case '0': case '1': case '2': case '3': case '4':
1349 case '5': case '6': case '7': case '8': case '9':
1350 n = (n * 10) + (*cp++ - '0');
1353 case 's': case 'w': case 'h':
1356 sp = swabshort(sp, n);
1362 sp = swablong(sp, n);
1365 default: /* Any other character, like 'b' counts as byte. */
1379 swabst((u_char *)"l", (u_char *)&x);