2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static char sccsid[] = "@(#)tape.c 8.9 (Berkeley) 5/1/95";
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
46 #include <sys/param.h>
51 #include <sys/extattr.h>
54 #include <ufs/ufs/extattr.h>
55 #include <ufs/ufs/dinode.h>
56 #include <protocols/dumprestore.h>
73 static long fssize = MAXBSIZE;
75 static int pipein = 0;
76 static int pipecmdin = 0;
77 static FILE *popenfp = NULL;
82 static union u_spcl endoftapemark;
83 static long byteslide = 0;
84 static long blksread; /* blocks read since last header */
85 static int64_t tapeaddr = 0; /* current TP_BSIZE tape record */
86 static long tapesread;
87 static jmp_buf restart;
88 static int gettingfile = 0; /* restart has a valid frame */
89 static char *host = NULL;
90 static int readmapflag;
94 static char lnkbuf[MAXPATHLEN + 1];
97 struct context curfile; /* describes next file available on the tape */
98 union u_spcl u_spcl; /* mapping of variables in a control block */
99 int Bcvt; /* Swap Bytes */
100 int oldinofmt; /* FreeBSD 1 inode format needs cvt */
102 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
104 char *namespace_names[] = EXTATTR_NAMESPACE_NAMES;
106 static void accthdr(struct s_spcl *);
107 static int checksum(int *);
108 static void findinode(struct s_spcl *);
109 static void findtapeblksize(void);
110 static char *setupextattr(int);
111 static void xtrattr(char *, size_t);
112 static void skiphole(void (*)(char *, size_t), size_t *);
113 static int gethead(struct s_spcl *);
114 static void readtape(char *);
115 static void setdumpnum(void);
116 static u_long swabl(u_long);
117 static u_char *swablong(u_char *, int);
118 static u_char *swabshort(u_char *, int);
119 static void terminateinput(void);
120 static void xtrfile(char *, size_t);
121 static void xtrlnkfile(char *, size_t);
122 static void xtrlnkskip(char *, size_t);
123 static void xtrmap(char *, size_t);
124 static void xtrmapskip(char *, size_t);
125 static void xtrskip(char *, size_t);
128 * Set up an input source
131 setinput(char *source, int ispipecommand)
137 newtapebuf(MAX(NTREC, HIGHDENSITYTREC));
144 if (strchr(source, ':')) {
146 source = strchr(host, ':');
148 if (rmthost(host) == 0)
152 if (strcmp(source, "-") == 0) {
154 * Since input is coming from a pipe we must establish
155 * our own connection to the terminal.
157 terminal = fopen(_PATH_TTY, "r");
158 if (terminal == NULL) {
159 (void)fprintf(stderr, "cannot open %s: %s\n",
160 _PATH_TTY, strerror(errno));
161 terminal = fopen(_PATH_DEVNULL, "r");
162 if (terminal == NULL) {
163 (void)fprintf(stderr, "cannot open %s: %s\n",
164 _PATH_DEVNULL, strerror(errno));
170 /* no longer need or want root privileges */
171 if (setuid(getuid()) != 0) {
172 fprintf(stderr, "setuid failed\n");
175 magtape = strdup(source);
176 if (magtape == NULL) {
177 fprintf(stderr, "Cannot allocate space for magtape buffer\n");
183 newtapebuf(long size)
185 static int tapebufsize = -1;
188 if (size <= tapebufsize)
191 free(tapebuf - TP_BSIZE);
192 tapebuf = malloc((size+1) * TP_BSIZE);
193 if (tapebuf == NULL) {
194 fprintf(stderr, "Cannot allocate space for tape buffer\n");
202 * Verify that the tape drive can be accessed and
203 * that it actually is a dump tape.
211 vprintf(stdout, "Verify tape and initialize maps\n");
213 if (setenv("RESTORE_VOLUME", "1", 1) == -1) {
214 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
218 popenfp = popen(magtape, "r");
219 mt = popenfp ? fileno(popenfp) : -1;
223 mt = rmtopen(magtape, 0);
229 mt = open(magtape, O_RDONLY, 0);
231 fprintf(stderr, "%s: %s\n", magtape, strerror(errno));
237 if (!pipein && !pipecmdin && !bflag)
239 if (gethead(&spcl) == FAIL) {
240 fprintf(stderr, "Tape is not a dump tape\n");
244 endoftapemark.s_spcl.c_magic = FS_UFS2_MAGIC;
245 endoftapemark.s_spcl.c_type = TS_END;
246 ip = (int *)&endoftapemark;
247 j = sizeof(union u_spcl) / sizeof(int);
252 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
254 if (vflag || command == 't')
256 dumptime = _time64_to_time(spcl.c_ddate);
257 dumpdate = _time64_to_time(spcl.c_date);
258 if (stat(".", &stbuf) < 0) {
259 fprintf(stderr, "cannot stat .: %s\n", strerror(errno));
262 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
264 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
265 fssize = stbuf.st_blksize;
266 if (((TP_BSIZE - 1) & stbuf.st_blksize) != 0) {
267 fprintf(stderr, "Warning: filesystem with non-multiple-of-%d "
268 "blocksize (%d);\n", TP_BSIZE, stbuf.st_blksize);
269 fssize = roundup(fssize, TP_BSIZE);
270 fprintf(stderr, "\twriting using blocksize %ld\n", fssize);
272 if (spcl.c_volume != 1) {
273 fprintf(stderr, "Tape is not volume 1 of the dump\n");
276 if (gethead(&spcl) == FAIL) {
277 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
278 panic("no header after volume mark!\n");
281 if (spcl.c_type != TS_CLRI) {
282 fprintf(stderr, "Cannot find file removal list\n");
285 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
286 dprintf(stdout, "maxino = %ju\n", (uintmax_t)maxino);
287 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
289 panic("no memory for active inode map\n");
291 curfile.action = USING;
292 getfile(xtrmap, xtrmapskip, xtrmapskip);
293 if (spcl.c_type != TS_BITS) {
294 fprintf(stderr, "Cannot find file dump list\n");
297 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
298 if (map == (char *)NULL)
299 panic("no memory for file dump list\n");
301 curfile.action = USING;
302 getfile(xtrmap, xtrmapskip, xtrmapskip);
304 * If there may be whiteout entries on the tape, pretend that the
305 * whiteout inode exists, so that the whiteout entries can be
308 SETINO(UFS_WINO, dumpmap);
309 /* 'r' restores don't call getvol() for tape 1, so mark it as read. */
315 * Prompt user to load a new dump volume.
316 * "Nextvol" is the next suggested volume to use.
317 * This suggested volume is enforced when doing full
318 * or incremental restores, but can be overridden by
319 * the user when only extracting a subset of the files.
325 long i, newvol, savecnt;
326 union u_spcl tmpspcl;
327 # define tmpbuf tmpspcl.s_spcl
334 prevtapea = tapeaddr;
338 panic("Changing volumes on pipe input?\n");
339 /* Avoid looping if we couldn't ask the user. */
340 if (yflag || ferror(terminal) || feof(terminal))
350 done(1); /* pipes do not get a second chance */
351 if (command == 'R' || command == 'r' || curfile.action != SKIP)
355 while (newvol <= 0) {
356 if (tapesread == 0) {
357 fprintf(stderr, "%s%s%s%s%s%s%s",
358 "You have not read any tapes yet.\n",
359 "If you are extracting just a few files,",
360 " start with the last volume\n",
361 "and work towards the first; restore",
362 " can quickly skip tapes that\n",
363 "have no further files to extract.",
364 " Otherwise, begin with volume 1.\n");
366 fprintf(stderr, "You have read volumes");
368 for (i = 0; i < 32; i++)
369 if (tapesread & (1 << i)) {
370 fprintf(stderr, "%s%ld", buf, i + 1);
373 fprintf(stderr, "\n");
376 fprintf(stderr, "Specify next volume #: ");
377 (void) fflush(stderr);
378 if (fgets(buf, BUFSIZ, terminal) == NULL)
380 } while (buf[0] == '\n');
384 "Volume numbers are positive numerics\n");
387 if (newvol == volno) {
388 tapesread |= 1 << (volno - 1);
392 fprintf(stderr, "Mount tape volume %ld\n", newvol);
393 fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
394 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
395 (void) fflush(stderr);
396 if (fgets(buf, BUFSIZ, terminal) == NULL)
398 if (!strcmp(buf, "none\n")) {
402 if (buf[0] != '\n') {
403 (void) strcpy(magtape, buf);
404 magtape[strlen(magtape) - 1] = '\0';
407 char volno[sizeof("2147483647")];
409 (void)sprintf(volno, "%ld", newvol);
410 if (setenv("RESTORE_VOLUME", volno, 1) == -1) {
411 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
415 popenfp = popen(magtape, "r");
416 mt = popenfp ? fileno(popenfp) : -1;
420 mt = rmtopen(magtape, 0);
423 mt = open(magtape, O_RDONLY, 0);
426 fprintf(stderr, "Cannot open %s\n", magtape);
434 if (gethead(&tmpbuf) == FAIL) {
435 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
436 fprintf(stderr, "tape is not dump tape\n");
440 if (tmpbuf.c_volume != volno) {
441 fprintf(stderr, "Wrong volume (%jd)\n",
442 (intmax_t)tmpbuf.c_volume);
446 if (_time64_to_time(tmpbuf.c_date) != dumpdate ||
447 _time64_to_time(tmpbuf.c_ddate) != dumptime) {
448 time_t t = _time64_to_time(tmpbuf.c_date);
449 fprintf(stderr, "Wrong dump date\n\tgot: %s", ctime(&t));
450 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
454 tapesread |= 1 << (volno - 1);
457 * If continuing from the previous volume, skip over any
458 * blocks read already at the end of the previous volume.
460 * If coming to this volume at random, skip to the beginning
461 * of the next record.
463 dprintf(stdout, "last rec %jd, tape starts with %jd\n",
464 (intmax_t)prevtapea, (intmax_t)tmpbuf.c_tapea);
465 if (tmpbuf.c_type == TS_TAPE) {
466 if (curfile.action != USING) {
468 * XXX Dump incorrectly sets c_count to 1 in the
469 * volume header of the first tape, so ignore
470 * c_count when volno == 1.
473 for (i = tmpbuf.c_count; i > 0; i--)
475 } else if (tmpbuf.c_tapea <= prevtapea) {
477 * Normally the value of c_tapea in the volume
478 * header is the record number of the header itself.
479 * However in the volume header following an EOT-
480 * terminated tape, it is the record number of the
481 * first continuation data block (dump bug?).
483 * The next record we want is `prevtapea + 1'.
485 i = prevtapea + 1 - tmpbuf.c_tapea;
486 dprintf(stderr, "Skipping %ld duplicate record%s.\n",
487 i, i > 1 ? "s" : "");
492 if (curfile.action == USING) {
494 panic("active file into volume 1\n");
497 (void) gethead(&spcl);
506 * Handle unexpected EOF.
512 if (gettingfile && curfile.action == USING) {
513 printf("Warning: %s %s\n",
514 "End-of-input encountered while extracting", curfile.name);
516 curfile.name = "<name unknown>";
517 curfile.action = UNKNOWN;
519 curfile.ino = maxino;
527 * handle multiple dumps per tape by skipping forward to the
535 if (dumpnum == 1 || volno != 1)
538 fprintf(stderr, "Cannot have multiple dumps on pipe input\n");
542 tcom.mt_count = dumpnum - 1;
545 rmtioctl(MTFSF, dumpnum - 1);
548 if (!pipecmdin && ioctl(mt, MTIOCTOP, (char *)&tcom) < 0)
549 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno));
556 t = _time64_to_time(spcl.c_date);
557 fprintf(stdout, "Dump date: %s", ctime(&t));
558 t = _time64_to_time(spcl.c_ddate);
559 fprintf(stdout, "Dumped from: %s",
560 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&t));
561 if (spcl.c_host[0] == '\0')
563 fprintf(stderr, "Level %jd dump of %s on %s:%s\n",
564 (intmax_t)spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
565 fprintf(stderr, "Label: %s\n", spcl.c_label);
569 extractfile(char *name)
576 struct timespec mtimep[2], ctimep[2];
581 curfile.action = USING;
582 mtimep[0].tv_sec = curfile.atime_sec;
583 mtimep[0].tv_nsec = curfile.atime_nsec;
584 mtimep[1].tv_sec = curfile.mtime_sec;
585 mtimep[1].tv_nsec = curfile.mtime_nsec;
586 ctimep[0].tv_sec = curfile.atime_sec;
587 ctimep[0].tv_nsec = curfile.atime_nsec;
588 ctimep[1].tv_sec = curfile.birthtime_sec;
589 ctimep[1].tv_nsec = curfile.birthtime_nsec;
590 extsize = curfile.extsize;
596 flags = curfile.file_flags;
597 switch (mode & IFMT) {
600 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
605 vprintf(stdout, "skipped socket %s\n", name);
611 ep = lookupname(name);
612 if (ep == NULL || ep->e_flags & EXTRACT)
613 panic("unextracted directory %s\n", name);
617 vprintf(stdout, "extract file %s\n", name);
618 return (genliteraldir(name, curfile.ino));
623 buf = setupextattr(extsize);
624 getfile(xtrlnkfile, xtrattr, xtrlnkskip);
627 "%s: zero length symbolic link (ignored)\n", name);
630 if (linkit(lnkbuf, name, SYMLINK) == GOOD) {
632 set_extattr(-1, name, buf, extsize, SXA_LINK);
633 (void) lchown(name, uid, gid);
634 (void) lchmod(name, mode);
635 (void) utimensat(AT_FDCWD, name, ctimep,
636 AT_SYMLINK_NOFOLLOW);
637 (void) utimensat(AT_FDCWD, name, mtimep,
638 AT_SYMLINK_NOFOLLOW);
639 (void) lchflags(name, flags);
645 vprintf(stdout, "extract fifo %s\n", name);
652 if (mkfifo(name, 0600) < 0) {
653 fprintf(stderr, "%s: cannot create fifo: %s\n",
654 name, strerror(errno));
661 buf = setupextattr(extsize);
662 getfile(xtrnull, xtrattr, xtrnull);
663 set_extattr(-1, name, buf, extsize, SXA_FILE);
665 (void) chown(name, uid, gid);
666 (void) chmod(name, mode);
667 (void) utimensat(AT_FDCWD, name, ctimep, 0);
668 (void) utimensat(AT_FDCWD, name, mtimep, 0);
669 (void) chflags(name, flags);
674 vprintf(stdout, "extract special file %s\n", name);
681 if (mknod(name, (mode & (IFCHR | IFBLK)) | 0600,
682 (int)curfile.rdev) < 0) {
683 fprintf(stderr, "%s: cannot create special file: %s\n",
684 name, strerror(errno));
691 buf = setupextattr(extsize);
692 getfile(xtrnull, xtrattr, xtrnull);
693 set_extattr(-1, name, buf, extsize, SXA_FILE);
695 (void) chown(name, uid, gid);
696 (void) chmod(name, mode);
697 (void) utimensat(AT_FDCWD, name, ctimep, 0);
698 (void) utimensat(AT_FDCWD, name, mtimep, 0);
699 (void) chflags(name, flags);
703 vprintf(stdout, "extract file %s\n", name);
710 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
712 fprintf(stderr, "%s: cannot create file: %s\n",
713 name, strerror(errno));
717 buf = setupextattr(extsize);
718 getfile(xtrfile, xtrattr, xtrskip);
720 set_extattr(ofile, name, buf, extsize, SXA_FD);
721 (void) fchown(ofile, uid, gid);
722 (void) fchmod(ofile, mode);
723 (void) futimens(ofile, ctimep);
724 (void) futimens(ofile, mtimep);
725 (void) fchflags(ofile, flags);
733 * Set attributes on a file descriptor, link, or file.
736 set_extattr(int fd, char *name, void *buf, int size, enum set_extattr_mode mode)
738 struct extattr *eap, *eaend;
742 char eaname[EXTATTR_MAXNAMELEN + 1];
744 vprintf(stdout, "Set attributes for %s:", name);
746 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
748 * Make sure this entry is complete.
750 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
751 dprintf(stdout, "\n\t%scorrupted",
752 eap == buf ? "" : "remainder ");
755 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
757 snprintf(eaname, sizeof(eaname), "%.*s",
758 (int)eap->ea_namelength, eap->ea_name);
759 vprintf(stdout, "\n\t%s, (%d bytes), %s",
760 namespace_names[eap->ea_namespace], eap->ea_length,
763 * First we try the general attribute setting interface.
764 * However, some attributes can only be set by root or
765 * by using special interfaces (for example, ACLs).
767 if (mode == SXA_FD) {
768 res = extattr_set_fd(fd, eap->ea_namespace,
769 eaname, EXTATTR_CONTENT(eap),
770 EXTATTR_CONTENT_SIZE(eap));
771 method = "extattr_set_fd";
772 } else if (mode == SXA_LINK) {
773 res = extattr_set_link(name, eap->ea_namespace,
774 eaname, EXTATTR_CONTENT(eap),
775 EXTATTR_CONTENT_SIZE(eap));
776 method = "extattr_set_link";
777 } else if (mode == SXA_FILE) {
778 res = extattr_set_file(name, eap->ea_namespace,
779 eaname, EXTATTR_CONTENT(eap),
780 EXTATTR_CONTENT_SIZE(eap));
781 method = "extattr_set_file";
784 dprintf(stdout, " (set using %s)", method);
788 * If the general interface refuses to set the attribute,
789 * then we try all the specialized interfaces that we
792 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
793 strcmp(eaname, POSIX1E_ACL_ACCESS_EXTATTR_NAME) == 0) {
794 if (mode == SXA_FD) {
795 error = acl_set_fd(fd, EXTATTR_CONTENT(eap));
796 method = "acl_set_fd";
797 } else if (mode == SXA_LINK) {
798 error = acl_set_link_np(name, ACL_TYPE_ACCESS,
799 EXTATTR_CONTENT(eap));
800 method = "acl_set_link_np";
801 } else if (mode == SXA_FILE) {
802 error = acl_set_file(name, ACL_TYPE_ACCESS,
803 EXTATTR_CONTENT(eap));
804 method = "acl_set_file";
807 dprintf(stdout, " (set using %s)", method);
811 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
812 strcmp(eaname, POSIX1E_ACL_DEFAULT_EXTATTR_NAME) == 0) {
813 if (mode == SXA_LINK) {
814 error = acl_set_link_np(name, ACL_TYPE_DEFAULT,
815 EXTATTR_CONTENT(eap));
816 method = "acl_set_link_np";
818 error = acl_set_file(name, ACL_TYPE_DEFAULT,
819 EXTATTR_CONTENT(eap));
820 method = "acl_set_file";
823 dprintf(stdout, " (set using %s)", method);
827 vprintf(stdout, " (unable to set)");
829 vprintf(stdout, "\n");
833 * skip over bit maps on the tape
839 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
844 * skip over a file on the tape
850 curfile.action = SKIP;
851 getfile(xtrnull, xtrnull, xtrnull);
855 * Skip a hole in an output file
858 skiphole(void (*skip)(char *, size_t), size_t *seekpos)
863 (*skip)(buf, *seekpos);
869 * Extract a file from the tape.
870 * When an allocated block is found it is passed to the fill function;
871 * when an unallocated block (hole) is found, a zeroed buffer is passed
872 * to the skip function.
875 getfile(void (*datafill)(char *, size_t), void (*attrfill)(char *, size_t),
876 void (*skip)(char *, size_t))
881 int curblk, attrsize;
882 void (*fillit)(char *, size_t);
883 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
889 attrsize = spcl.c_extsize;
890 if (spcl.c_type == TS_END)
891 panic("ran off end of tape\n");
892 if (spcl.c_magic != FS_UFS2_MAGIC)
893 panic("not at beginning of a file\n");
894 if (!gettingfile && setjmp(restart) != 0)
898 if (size == 0 && attrsize > 0) {
904 for (i = 0; i < spcl.c_count; i++) {
905 if (!readmapflag && i > TP_NINDIR) {
907 fprintf(stderr, "spcl.c_count = %jd\n",
908 (intmax_t)spcl.c_count);
911 panic("spcl.c_count = %jd\n",
912 (intmax_t)spcl.c_count);
914 if (readmapflag || spcl.c_addr[i]) {
915 readtape(&buf[curblk++][0]);
916 if (curblk == fssize / TP_BSIZE) {
917 skiphole(skip, &seekpos);
918 (*fillit)((char *)buf, (long)(size > TP_BSIZE ?
919 fssize : (curblk - 1) * TP_BSIZE + size));
924 skiphole(skip, &seekpos);
925 (*fillit)((char *)buf, (long)(size > TP_BSIZE ?
927 (curblk - 1) * TP_BSIZE + size));
931 * We have a block of a hole. Don't skip it
932 * now, because there may be next adjacent
933 * block of the hole in the file. Postpone the
934 * seek until next file write.
936 seekpos += (long)MIN(TP_BSIZE, size);
938 if ((size -= TP_BSIZE) <= 0) {
939 if (size > -TP_BSIZE && curblk > 0) {
940 skiphole(skip, &seekpos);
941 (*fillit)((char *)buf,
942 (long)((curblk * TP_BSIZE) + size));
951 if (spcl.c_count - i > 1)
952 dprintf(stdout, "skipping %d junk block(s)\n",
953 spcl.c_count - i - 1);
954 for (i++; i < spcl.c_count; i++) {
955 if (!readmapflag && i > TP_NINDIR) {
958 "spcl.c_count = %jd\n",
959 (intmax_t)spcl.c_count);
962 panic("spcl.c_count = %jd\n",
963 (intmax_t)spcl.c_count);
965 if (readmapflag || spcl.c_addr[i])
971 if (gethead(&spcl) == GOOD && size > 0) {
972 if (spcl.c_type == TS_ADDR)
975 "Missing address (header) block for %s at %ld blocks\n",
976 curfile.name, blksread);
979 panic("getfile: lost data\n");
985 * These variables are shared between the next two functions.
987 static int extbufsize = 0;
992 * Allocate a buffer into which to extract extended attributes.
995 setupextattr(int extsize)
999 if (extsize <= extbufsize)
1003 if ((extbuf = malloc(extsize)) != NULL) {
1004 extbufsize = extsize;
1009 fprintf(stderr, "Cannot extract %d bytes %s for inode %ju, name %s\n",
1010 extsize, "of extended attributes", (uintmax_t)curfile.ino,
1016 * Extract the next block of extended attributes.
1019 xtrattr(char *buf, size_t size)
1022 if (extloc + size > extbufsize)
1023 panic("overrun attribute buffer\n");
1024 memmove(&extbuf[extloc], buf, size);
1029 * Write out the next block of a file.
1032 xtrfile(char *buf, size_t size)
1037 if (write(ofile, buf, (int) size) == -1) {
1039 "write error extracting inode %ju, name %s\nwrite: %s\n",
1040 (uintmax_t)curfile.ino, curfile.name, strerror(errno));
1045 * Skip over a hole in a file.
1049 xtrskip(char *buf, size_t size)
1052 if (lseek(ofile, size, SEEK_CUR) == -1) {
1054 "seek error extracting inode %ju, name %s\nlseek: %s\n",
1055 (uintmax_t)curfile.ino, curfile.name, strerror(errno));
1061 * Collect the next block of a symbolic link.
1064 xtrlnkfile(char *buf, size_t size)
1068 if (pathlen > MAXPATHLEN) {
1069 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n",
1070 curfile.name, lnkbuf, buf, pathlen);
1073 (void) strcat(lnkbuf, buf);
1077 * Skip over a hole in a symbolic link (should never happen).
1081 xtrlnkskip(char *buf, size_t size)
1084 fprintf(stderr, "unallocated block in symbolic link %s\n",
1090 * Collect the next block of a bit map.
1093 xtrmap(char *buf, size_t size)
1096 memmove(map, buf, size);
1101 * Skip over a hole in a bit map (should never happen).
1105 xtrmapskip(char *buf, size_t size)
1108 panic("hole in map\n");
1113 * Noop, when an extraction function is not needed.
1117 xtrnull(char *buf, size_t size)
1124 * Read TP_BSIZE blocks from the input.
1125 * Handle read errors, and end of media.
1130 long rd, newvol, i, oldnumtrec;
1131 int cnt, seek_failed;
1133 if (blkcnt + (byteslide > 0) < numtrec) {
1134 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE);
1140 memmove(&tapebuf[-TP_BSIZE],
1141 &tapebuf[(numtrec-1) * TP_BSIZE], (long)TP_BSIZE);
1142 oldnumtrec = numtrec;
1143 for (i = 0; i < ntrec; i++)
1144 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1147 cnt = ntrec * TP_BSIZE;
1152 i = rmtread(&tapebuf[rd], cnt);
1155 i = read(mt, &tapebuf[rd], cnt);
1157 * Check for mid-tape short read error.
1158 * If found, skip rest of buffer and start with the next.
1160 if (!pipein && !pipecmdin && numtrec < ntrec && i > 0) {
1161 dprintf(stdout, "mid-media short read error.\n");
1165 * Handle partial block read.
1167 if ((pipein || pipecmdin) && i == 0 && rd > 0)
1169 else if (i > 0 && i != ntrec * TP_BSIZE) {
1170 if (pipein || pipecmdin) {
1178 * Short read. Process the blocks read.
1180 if (i % TP_BSIZE != 0)
1182 "partial block read: %ld should be %ld\n",
1183 i, ntrec * TP_BSIZE);
1184 numtrec = i / TP_BSIZE;
1188 * Handle read error.
1191 fprintf(stderr, "Tape read error while ");
1192 switch (curfile.action) {
1194 fprintf(stderr, "trying to set up tape\n");
1197 fprintf(stderr, "trying to resynchronize\n");
1200 fprintf(stderr, "restoring %s\n", curfile.name);
1203 fprintf(stderr, "skipping over inode %ju\n",
1204 (uintmax_t)curfile.ino);
1207 if (!yflag && !reply("continue"))
1209 i = ntrec * TP_BSIZE;
1210 memset(tapebuf, 0, i);
1213 seek_failed = (rmtseek(i, 1) < 0);
1216 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
1220 "continuation failed: %s\n", strerror(errno));
1225 * Handle end of tape.
1228 vprintf(stdout, "End-of-tape encountered\n");
1237 if (rd % TP_BSIZE != 0)
1238 panic("partial block read: %ld should be %ld\n",
1239 rd, ntrec * TP_BSIZE);
1241 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE);
1243 if (oldnumtrec == 0)
1246 blkcnt -= oldnumtrec;
1248 &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE);
1254 findtapeblksize(void)
1258 for (i = 0; i < ntrec; i++)
1259 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1263 i = rmtread(tapebuf, ntrec * TP_BSIZE);
1266 i = read(mt, tapebuf, ntrec * TP_BSIZE);
1269 fprintf(stderr, "tape read error: %s\n", strerror(errno));
1272 if (i % TP_BSIZE != 0) {
1273 fprintf(stderr, "Tape block size (%ld) %s (%d)\n",
1274 i, "is not a multiple of dump block size", TP_BSIZE);
1277 ntrec = i / TP_BSIZE;
1279 vprintf(stdout, "Tape block size is %ld\n", ntrec);
1301 * Read the next block from the tape.
1302 * If it is not any valid header, return an error.
1305 gethead(struct s_spcl *buf)
1309 readtape((char *)buf);
1310 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) {
1311 if (buf->c_magic == OFS_MAGIC) {
1313 "Format of dump tape is too old. Must use\n");
1315 "a version of restore from before 2002.\n");
1318 if (swabl(buf->c_magic) != FS_UFS2_MAGIC &&
1319 swabl(buf->c_magic) != NFS_MAGIC) {
1320 if (swabl(buf->c_magic) == OFS_MAGIC) {
1322 "Format of dump tape is too old. Must use\n");
1324 "a version of restore from before 2002.\n");
1329 vprintf(stdout, "Note: Doing Byte swapping\n");
1333 if (checksum((int *)buf) == FAIL)
1336 swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf);
1337 swabst((u_char *)"l",(u_char *) &buf->c_level);
1338 swabst((u_char *)"2l4q",(u_char *) &buf->c_flags);
1342 switch (buf->c_type) {
1347 * Have to patch up missing information in bit map headers
1349 buf->c_size = buf->c_count * TP_BSIZE;
1350 if (buf->c_count > TP_NINDIR)
1353 for (i = 0; i < buf->c_count; i++)
1358 if (buf->c_magic == NFS_MAGIC &&
1359 (buf->c_flags & NFS_DR_NEWINODEFMT) == 0)
1370 * For old dump tapes, have to copy up old fields to
1373 if (buf->c_magic == NFS_MAGIC) {
1374 buf->c_tapea = buf->c_old_tapea;
1375 buf->c_firstrec = buf->c_old_firstrec;
1376 buf->c_date = _time32_to_time(buf->c_old_date);
1377 buf->c_ddate = _time32_to_time(buf->c_old_ddate);
1378 buf->c_atime = _time32_to_time(buf->c_old_atime);
1379 buf->c_mtime = _time32_to_time(buf->c_old_mtime);
1380 buf->c_birthtime = 0;
1381 buf->c_birthtimensec = 0;
1387 panic("gethead: unknown inode type %d\n", buf->c_type);
1390 if (dumpdate != 0 && _time64_to_time(buf->c_date) != dumpdate)
1391 fprintf(stderr, "Header with wrong dumpdate.\n");
1393 * If we're restoring a filesystem with the old (FreeBSD 1)
1394 * format inodes, copy the uid/gid to the new location
1397 buf->c_uid = buf->c_spare1[1];
1398 buf->c_gid = buf->c_spare1[2];
1400 buf->c_magic = FS_UFS2_MAGIC;
1401 tapeaddr = buf->c_tapea;
1408 * Check that a header is where it belongs and predict the next header
1411 accthdr(struct s_spcl *header)
1413 static ino_t previno = 0x7fffffff;
1414 static int prevtype;
1415 static long predict;
1418 if (header->c_type == TS_TAPE) {
1419 fprintf(stderr, "Volume header ");
1420 if (header->c_firstrec)
1421 fprintf(stderr, "begins with record %jd",
1422 (intmax_t)header->c_firstrec);
1423 fprintf(stderr, "\n");
1424 previno = 0x7fffffff;
1427 if (previno == 0x7fffffff)
1431 fprintf(stderr, "Dumped inodes map header");
1434 fprintf(stderr, "Used inodes map header");
1437 fprintf(stderr, "File header, ino %ju", (uintmax_t)previno);
1440 fprintf(stderr, "File continuation header, ino %ju",
1441 (uintmax_t)previno);
1444 fprintf(stderr, "End of tape header");
1447 if (predict != blksread - 1)
1448 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
1449 predict, blksread - 1);
1450 fprintf(stderr, "\n");
1453 if (header->c_type != TS_END)
1454 for (i = 0; i < header->c_count; i++)
1455 if (readmapflag || header->c_addr[i] != 0)
1459 prevtype = header->c_type;
1460 previno = header->c_inumber;
1464 * Find an inode header.
1465 * Complain if had to skip.
1468 findinode(struct s_spcl *header)
1470 static long skipcnt = 0;
1475 curfile.name = "<name unknown>";
1476 curfile.action = UNKNOWN;
1480 htype = header->c_type;
1485 * Skip up to the beginning of the next record
1487 for (i = 0; i < header->c_count; i++)
1488 if (header->c_addr[i])
1490 while (gethead(header) == FAIL ||
1491 _time64_to_time(header->c_date) != dumpdate) {
1495 if (byteslide < TP_BSIZE) {
1505 curfile.mode = header->c_mode;
1506 curfile.uid = header->c_uid;
1507 curfile.gid = header->c_gid;
1508 curfile.file_flags = header->c_file_flags;
1509 curfile.rdev = header->c_rdev;
1510 curfile.atime_sec = header->c_atime;
1511 curfile.atime_nsec = header->c_atimensec;
1512 curfile.mtime_sec = header->c_mtime;
1513 curfile.mtime_nsec = header->c_mtimensec;
1514 curfile.birthtime_sec = header->c_birthtime;
1515 curfile.birthtime_nsec = header->c_birthtimensec;
1516 curfile.extsize = header->c_extsize;
1517 curfile.size = header->c_size;
1518 curfile.ino = header->c_inumber;
1522 /* If we missed some tapes, get another volume. */
1523 if (tapesread & (tapesread + 1)) {
1527 curfile.ino = maxino;
1531 curfile.name = "<file removal list>";
1535 curfile.name = "<file dump list>";
1540 fprintf(stderr, "unexpected tape header\n");
1542 panic("unexpected tape header\n");
1546 fprintf(stderr, "unknown tape header type %d\n",
1549 panic("unknown tape header type %d\n",
1551 while (gethead(header) == FAIL ||
1552 _time64_to_time(header->c_date) != dumpdate) {
1556 if (byteslide < TP_BSIZE) {
1565 } while (htype == TS_ADDR);
1567 fprintf(stderr, "resync restore, skipped %ld %s\n",
1568 skipcnt, Dflag ? "bytes" : "blocks");
1577 j = sizeof(union u_spcl) / sizeof(int);
1584 /* What happens if we want to read restore tapes
1585 for a 16bit int machine??? */
1591 if (i != CHECKSUM) {
1592 fprintf(stderr, "Checksum error %o, inode %ju file %s\n", i,
1593 (uintmax_t)curfile.ino, curfile.name);
1603 msg(const char *fmt, ...)
1607 (void)vfprintf(stderr, fmt, ap);
1610 #endif /* RRESTORE */
1613 swabshort(u_char *sp, int n)
1618 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
1625 swablong(u_char *sp, int n)
1630 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
1631 c = sp[2]; sp[2] = sp[1]; sp[1] = c;
1638 swabquad(u_char *sp, int n)
1643 c = sp[0]; sp[0] = sp[7]; sp[7] = c;
1644 c = sp[1]; sp[1] = sp[6]; sp[6] = c;
1645 c = sp[2]; sp[2] = sp[5]; sp[5] = c;
1646 c = sp[3]; sp[3] = sp[4]; sp[4] = c;
1653 swabst(u_char *cp, u_char *sp)
1659 case '0': case '1': case '2': case '3': case '4':
1660 case '5': case '6': case '7': case '8': case '9':
1661 n = (n * 10) + (*cp++ - '0');
1664 case 's': case 'w': case 'h':
1667 sp = swabshort(sp, n);
1673 sp = swablong(sp, n);
1679 sp = swabquad(sp, n);
1689 fprintf(stderr, "Unknown conversion character: %c\n",
1702 swabst((u_char *)"l", (u_char *)&x);