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";
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #include <sys/param.h>
49 #include <sys/extattr.h>
52 #include <ufs/ufs/extattr.h>
53 #include <ufs/ufs/dinode.h>
54 #include <protocols/dumprestore.h>
71 static long fssize = MAXBSIZE;
73 static int pipein = 0;
74 static int pipecmdin = 0;
75 static FILE *popenfp = NULL;
80 static union u_spcl endoftapemark;
81 static long byteslide = 0;
82 static long blksread; /* blocks read since last header */
83 static int64_t tapeaddr = 0; /* current TP_BSIZE tape record */
84 static long tapesread;
85 static jmp_buf restart;
86 static int gettingfile = 0; /* restart has a valid frame */
87 static char *host = NULL;
88 static int readmapflag;
92 static char lnkbuf[MAXPATHLEN + 1];
95 int Bcvt; /* Swap Bytes */
96 int oldinofmt; /* FreeBSD 1 inode format needs cvt */
98 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
100 char *namespace_names[] = EXTATTR_NAMESPACE_NAMES;
102 static void accthdr(struct s_spcl *);
103 static int checksum(int *);
104 static void findinode(struct s_spcl *);
105 static void findtapeblksize(void);
106 static char *setupextattr(int);
107 static void xtrattr(char *, long);
108 static void set_extattr_link(char *, void *, int);
109 static void set_extattr_fd(int, char *, void *, int);
110 static int gethead(struct s_spcl *);
111 static void readtape(char *);
112 static void setdumpnum(void);
113 static u_long swabl(u_long);
114 static u_char *swablong(u_char *, int);
115 static u_char *swabshort(u_char *, int);
116 static void terminateinput(void);
117 static void xtrfile(char *, long);
118 static void xtrlnkfile(char *, long);
119 static void xtrlnkskip(char *, long);
120 static void xtrmap(char *, long);
121 static void xtrmapskip(char *, long);
122 static void xtrskip(char *, long);
125 * Set up an input source
128 setinput(char *source, int ispipecommand)
134 newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC);
141 if (strchr(source, ':')) {
143 source = strchr(host, ':');
145 if (rmthost(host) == 0)
149 if (strcmp(source, "-") == 0) {
151 * Since input is coming from a pipe we must establish
152 * our own connection to the terminal.
154 terminal = fopen(_PATH_TTY, "r");
155 if (terminal == NULL) {
156 (void)fprintf(stderr, "cannot open %s: %s\n",
157 _PATH_TTY, strerror(errno));
158 terminal = fopen(_PATH_DEVNULL, "r");
159 if (terminal == NULL) {
160 (void)fprintf(stderr, "cannot open %s: %s\n",
161 _PATH_DEVNULL, strerror(errno));
167 /* no longer need or want root privileges */
168 if (setuid(getuid()) != 0) {
169 fprintf(stderr, "setuid failed\n");
172 magtape = strdup(source);
173 if (magtape == NULL) {
174 fprintf(stderr, "Cannot allocate space for magtape buffer\n");
180 newtapebuf(long size)
182 static int tapebufsize = -1;
185 if (size <= tapebufsize)
188 free(tapebuf - TP_BSIZE);
189 tapebuf = malloc((size+1) * TP_BSIZE);
190 if (tapebuf == NULL) {
191 fprintf(stderr, "Cannot allocate space for tape buffer\n");
199 * Verify that the tape drive can be accessed and
200 * that it actually is a dump tape.
208 vprintf(stdout, "Verify tape and initialize maps\n");
210 if (setenv("RESTORE_VOLUME", "1", 1) == -1) {
211 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
215 popenfp = popen(magtape, "r");
216 mt = popenfp ? fileno(popenfp) : -1;
220 mt = rmtopen(magtape, 0);
226 mt = open(magtape, O_RDONLY, 0);
228 fprintf(stderr, "%s: %s\n", magtape, strerror(errno));
234 if (!pipein && !pipecmdin && !bflag)
236 if (gethead(&spcl) == FAIL) {
237 fprintf(stderr, "Tape is not a dump tape\n");
241 endoftapemark.s_spcl.c_magic = FS_UFS2_MAGIC;
242 endoftapemark.s_spcl.c_type = TS_END;
243 ip = (int *)&endoftapemark;
244 j = sizeof(union u_spcl) / sizeof(int);
249 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
251 if (vflag || command == 't')
253 dumptime = _time64_to_time(spcl.c_ddate);
254 dumpdate = _time64_to_time(spcl.c_date);
255 if (stat(".", &stbuf) < 0) {
256 fprintf(stderr, "cannot stat .: %s\n", strerror(errno));
259 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
261 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
262 fssize = stbuf.st_blksize;
263 if (((fssize - 1) & fssize) != 0) {
264 fprintf(stderr, "bad block size %ld\n", fssize);
267 if (spcl.c_volume != 1) {
268 fprintf(stderr, "Tape is not volume 1 of the dump\n");
271 if (gethead(&spcl) == FAIL) {
272 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
273 panic("no header after volume mark!\n");
276 if (spcl.c_type != TS_CLRI) {
277 fprintf(stderr, "Cannot find file removal list\n");
280 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
281 dprintf(stdout, "maxino = %d\n", maxino);
282 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
284 panic("no memory for active inode map\n");
286 curfile.action = USING;
287 getfile(xtrmap, xtrmapskip, xtrmapskip);
288 if (spcl.c_type != TS_BITS) {
289 fprintf(stderr, "Cannot find file dump list\n");
292 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
293 if (map == (char *)NULL)
294 panic("no memory for file dump list\n");
296 curfile.action = USING;
297 getfile(xtrmap, xtrmapskip, xtrmapskip);
299 * If there may be whiteout entries on the tape, pretend that the
300 * whiteout inode exists, so that the whiteout entries can be
303 SETINO(WINO, dumpmap);
304 /* 'r' restores don't call getvol() for tape 1, so mark it as read. */
310 * Prompt user to load a new dump volume.
311 * "Nextvol" is the next suggested volume to use.
312 * This suggested volume is enforced when doing full
313 * or incremental restores, but can be overridden by
314 * the user when only extracting a subset of the files.
320 long i, newvol, savecnt;
321 union u_spcl tmpspcl;
322 # define tmpbuf tmpspcl.s_spcl
329 prevtapea = tapeaddr;
333 panic("Changing volumes on pipe input?\n");
334 /* Avoid looping if we couldn't ask the user. */
335 if (yflag || ferror(terminal) || feof(terminal))
344 done(1); /* pipes do not get a second chance */
345 if (command == 'R' || command == 'r' || curfile.action != SKIP)
349 while (newvol <= 0) {
350 if (tapesread == 0) {
351 fprintf(stderr, "%s%s%s%s%s%s%s",
352 "You have not read any tapes yet.\n",
353 "If you are extracting just a few files,",
354 " start with the last volume\n",
355 "and work towards the first; restore",
356 " can quickly skip tapes that\n",
357 "have no further files to extract.",
358 " Otherwise, begin with volume 1.\n");
360 fprintf(stderr, "You have read volumes");
362 for (i = 0; i < 32; i++)
363 if (tapesread & (1 << i)) {
364 fprintf(stderr, "%s%ld", buf, i + 1);
367 fprintf(stderr, "\n");
370 fprintf(stderr, "Specify next volume #: ");
371 (void) fflush(stderr);
372 if (fgets(buf, BUFSIZ, terminal) == NULL)
374 } while (buf[0] == '\n');
378 "Volume numbers are positive numerics\n");
381 if (newvol == volno) {
382 tapesread |= 1 << (volno - 1);
386 fprintf(stderr, "Mount tape volume %ld\n", newvol);
387 fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
388 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
389 (void) fflush(stderr);
390 if (fgets(buf, BUFSIZ, terminal) == NULL)
392 if (!strcmp(buf, "none\n")) {
396 if (buf[0] != '\n') {
397 (void) strcpy(magtape, buf);
398 magtape[strlen(magtape) - 1] = '\0';
401 char volno[sizeof("2147483647")];
403 (void)sprintf(volno, "%d", newvol);
404 if (setenv("RESTORE_VOLUME", volno, 1) == -1) {
405 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
409 popenfp = popen(magtape, "r");
410 mt = popenfp ? fileno(popenfp) : -1;
414 mt = rmtopen(magtape, 0);
417 mt = open(magtape, O_RDONLY, 0);
420 fprintf(stderr, "Cannot open %s\n", magtape);
428 if (gethead(&tmpbuf) == FAIL) {
429 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
430 fprintf(stderr, "tape is not dump tape\n");
434 if (tmpbuf.c_volume != volno) {
435 fprintf(stderr, "Wrong volume (%ld)\n", tmpbuf.c_volume);
439 if (_time64_to_time(tmpbuf.c_date) != dumpdate ||
440 _time64_to_time(tmpbuf.c_ddate) != dumptime) {
441 time_t t = _time64_to_time(tmpbuf.c_date);
442 fprintf(stderr, "Wrong dump date\n\tgot: %s", ctime(&t));
443 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
447 tapesread |= 1 << (volno - 1);
450 * If continuing from the previous volume, skip over any
451 * blocks read already at the end of the previous volume.
453 * If coming to this volume at random, skip to the beginning
454 * of the next record.
456 dprintf(stdout, "last rec %qd, tape starts with %qd\n", prevtapea,
458 if (tmpbuf.c_type == TS_TAPE) {
459 if (curfile.action != USING) {
461 * XXX Dump incorrectly sets c_count to 1 in the
462 * volume header of the first tape, so ignore
463 * c_count when volno == 1.
466 for (i = tmpbuf.c_count; i > 0; i--)
468 } else if (tmpbuf.c_tapea <= prevtapea) {
470 * Normally the value of c_tapea in the volume
471 * header is the record number of the header itself.
472 * However in the volume header following an EOT-
473 * terminated tape, it is the record number of the
474 * first continuation data block (dump bug?).
476 * The next record we want is `prevtapea + 1'.
478 i = prevtapea + 1 - tmpbuf.c_tapea;
479 dprintf(stderr, "Skipping %ld duplicate record%s.\n",
480 i, i > 1 ? "s" : "");
485 if (curfile.action == USING) {
487 panic("active file into volume 1\n");
490 (void) gethead(&spcl);
499 * Handle unexpected EOF.
505 if (gettingfile && curfile.action == USING) {
506 printf("Warning: %s %s\n",
507 "End-of-input encountered while extracting", curfile.name);
509 curfile.name = "<name unknown>";
510 curfile.action = UNKNOWN;
512 curfile.ino = maxino;
520 * handle multiple dumps per tape by skipping forward to the
528 if (dumpnum == 1 || volno != 1)
531 fprintf(stderr, "Cannot have multiple dumps on pipe input\n");
535 tcom.mt_count = dumpnum - 1;
538 rmtioctl(MTFSF, dumpnum - 1);
541 if (!pipecmdin && ioctl(mt, MTIOCTOP, (char *)&tcom) < 0)
542 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno));
549 t = _time64_to_time(spcl.c_date);
550 fprintf(stdout, "Dump date: %s", ctime(&t));
551 t = _time64_to_time(spcl.c_ddate);
552 fprintf(stdout, "Dumped from: %s",
553 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&t));
554 if (spcl.c_host[0] == '\0')
556 fprintf(stderr, "Level %ld dump of %s on %s:%s\n",
557 spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
558 fprintf(stderr, "Label: %s\n", spcl.c_label);
562 extractfile(char *name)
569 struct timeval mtimep[2], ctimep[2];
574 curfile.action = USING;
575 mtimep[0].tv_sec = curfile.atime_sec;
576 mtimep[0].tv_usec = curfile.atime_nsec / 1000;
577 mtimep[1].tv_sec = curfile.mtime_sec;
578 mtimep[1].tv_usec = curfile.mtime_nsec / 1000;
579 ctimep[0].tv_sec = curfile.atime_sec;
580 ctimep[0].tv_usec = curfile.atime_nsec / 1000;
581 ctimep[1].tv_sec = curfile.birthtime_sec;
582 ctimep[1].tv_usec = curfile.birthtime_nsec / 1000;
583 extsize = curfile.extsize;
589 flags = curfile.file_flags;
590 switch (mode & IFMT) {
593 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
598 vprintf(stdout, "skipped socket %s\n", name);
604 ep = lookupname(name);
605 if (ep == NULL || ep->e_flags & EXTRACT)
606 panic("unextracted directory %s\n", name);
610 vprintf(stdout, "extract file %s\n", name);
611 return (genliteraldir(name, curfile.ino));
616 buf = setupextattr(extsize);
617 getfile(xtrlnkfile, xtrattr, xtrlnkskip);
620 "%s: zero length symbolic link (ignored)\n", name);
623 if (linkit(lnkbuf, name, SYMLINK) == GOOD) {
625 set_extattr_link(name, buf, extsize);
626 (void) lchown(name, uid, gid);
627 (void) lchmod(name, mode);
628 (void) lutimes(name, ctimep);
629 (void) lutimes(name, mtimep);
630 (void) lchflags(name, flags);
636 vprintf(stdout, "extract fifo %s\n", name);
643 if (mkfifo(name, 0600) < 0) {
644 fprintf(stderr, "%s: cannot create fifo: %s\n",
645 name, strerror(errno));
652 buf = setupextattr(extsize);
653 getfile(xtrnull, xtrattr, xtrnull);
654 set_extattr_file(name, buf, extsize);
656 (void) chown(name, uid, gid);
657 (void) chmod(name, mode);
658 (void) utimes(name, ctimep);
659 (void) utimes(name, mtimep);
660 (void) chflags(name, flags);
665 vprintf(stdout, "extract special file %s\n", name);
672 if (mknod(name, (mode & (IFCHR | IFBLK)) | 0600,
673 (int)curfile.rdev) < 0) {
674 fprintf(stderr, "%s: cannot create special file: %s\n",
675 name, strerror(errno));
682 buf = setupextattr(extsize);
683 getfile(xtrnull, xtrattr, xtrnull);
684 set_extattr_file(name, buf, extsize);
686 (void) chown(name, uid, gid);
687 (void) chmod(name, mode);
688 (void) utimes(name, ctimep);
689 (void) utimes(name, mtimep);
690 (void) chflags(name, flags);
694 vprintf(stdout, "extract file %s\n", name);
701 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
703 fprintf(stderr, "%s: cannot create file: %s\n",
704 name, strerror(errno));
708 buf = setupextattr(extsize);
709 getfile(xtrfile, xtrattr, xtrskip);
711 set_extattr_fd(ofile, name, buf, extsize);
712 (void) fchown(ofile, uid, gid);
713 (void) fchmod(ofile, mode);
714 (void) futimes(ofile, ctimep);
715 (void) futimes(ofile, mtimep);
716 (void) fchflags(ofile, flags);
724 * Set attributes for a file.
727 set_extattr_file(char *name, void *buf, int size)
729 struct extattr *eap, *eaend;
731 vprintf(stdout, "Set attributes for %s:", name);
733 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
735 * Make sure this entry is complete.
737 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
738 dprintf(stdout, "\n\t%scorrupted",
739 eap == buf ? "" : "remainder ");
742 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
744 vprintf(stdout, "\n\t%s, (%d bytes), %*s",
745 namespace_names[eap->ea_namespace], eap->ea_length,
746 eap->ea_namelength, eap->ea_name);
748 * First we try the general attribute setting interface.
749 * However, some attributes can only be set by root or
750 * by using special interfaces (for example, ACLs).
752 if (extattr_set_file(name, eap->ea_namespace, eap->ea_name,
753 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) {
754 dprintf(stdout, " (set using extattr_set_file)");
758 * If the general interface refuses to set the attribute,
759 * then we try all the specialized interfaces that we
762 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
763 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) {
764 if (acl_set_file(name, ACL_TYPE_ACCESS,
765 EXTATTR_CONTENT(eap)) != -1) {
766 dprintf(stdout, " (set using acl_set_file)");
770 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
771 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) {
772 if (acl_set_file(name, ACL_TYPE_DEFAULT,
773 EXTATTR_CONTENT(eap)) != -1) {
774 dprintf(stdout, " (set using acl_set_file)");
778 vprintf(stdout, " (unable to set)");
780 vprintf(stdout, "\n");
784 * Set attributes for a symbolic link.
787 set_extattr_link(char *name, void *buf, int size)
789 struct extattr *eap, *eaend;
791 vprintf(stdout, "Set attributes for %s:", name);
793 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
795 * Make sure this entry is complete.
797 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
798 dprintf(stdout, "\n\t%scorrupted",
799 eap == buf ? "" : "remainder ");
802 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
804 vprintf(stdout, "\n\t%s, (%d bytes), %*s",
805 namespace_names[eap->ea_namespace], eap->ea_length,
806 eap->ea_namelength, eap->ea_name);
808 * First we try the general attribute setting interface.
809 * However, some attributes can only be set by root or
810 * by using special interfaces (for example, ACLs).
812 if (extattr_set_link(name, eap->ea_namespace, eap->ea_name,
813 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) {
814 dprintf(stdout, " (set using extattr_set_link)");
818 * If the general interface refuses to set the attribute,
819 * then we try all the specialized interfaces that we
822 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
823 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) {
824 if (acl_set_link_np(name, ACL_TYPE_ACCESS,
825 EXTATTR_CONTENT(eap)) != -1) {
826 dprintf(stdout, " (set using acl_set_link_np)");
830 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
831 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) {
832 if (acl_set_link_np(name, ACL_TYPE_DEFAULT,
833 EXTATTR_CONTENT(eap)) != -1) {
834 dprintf(stdout, " (set using acl_set_link_np)");
838 vprintf(stdout, " (unable to set)");
840 vprintf(stdout, "\n");
844 * Set attributes on a file descriptor.
847 set_extattr_fd(int fd, char *name, void *buf, int size)
849 struct extattr *eap, *eaend;
851 vprintf(stdout, "Set attributes for %s:", name);
853 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
855 * Make sure this entry is complete.
857 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
858 dprintf(stdout, "\n\t%scorrupted",
859 eap == buf ? "" : "remainder ");
862 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
864 vprintf(stdout, "\n\t%s, (%d bytes), %*s",
865 namespace_names[eap->ea_namespace], eap->ea_length,
866 eap->ea_namelength, eap->ea_name);
868 * First we try the general attribute setting interface.
869 * However, some attributes can only be set by root or
870 * by using special interfaces (for example, ACLs).
872 if (extattr_set_fd(fd, eap->ea_namespace, eap->ea_name,
873 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) {
874 dprintf(stdout, " (set using extattr_set_fd)");
878 * If the general interface refuses to set the attribute,
879 * then we try all the specialized interfaces that we
882 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
883 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) {
884 if (acl_set_fd(fd, EXTATTR_CONTENT(eap)) != -1) {
885 dprintf(stdout, " (set using acl_set_fd)");
889 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
890 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) {
891 if (acl_set_file(name, ACL_TYPE_DEFAULT,
892 EXTATTR_CONTENT(eap)) != -1) {
893 dprintf(stdout, " (set using acl_set_file)");
897 vprintf(stdout, " (unable to set)");
899 vprintf(stdout, "\n");
903 * skip over bit maps on the tape
909 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
914 * skip over a file on the tape
920 curfile.action = SKIP;
921 getfile(xtrnull, xtrnull, xtrnull);
925 * Extract a file from the tape.
926 * When an allocated block is found it is passed to the fill function;
927 * when an unallocated block (hole) is found, a zeroed buffer is passed
928 * to the skip function.
931 getfile(void (*datafill)(char *, long), void (*attrfill)(char *, long),
932 void (*skip)(char *, long))
936 int curblk, attrsize;
937 void (*fillit)(char *, long);
938 static char clearedbuf[MAXBSIZE];
939 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
944 attrsize = spcl.c_extsize;
945 if (spcl.c_type == TS_END)
946 panic("ran off end of tape\n");
947 if (spcl.c_magic != FS_UFS2_MAGIC)
948 panic("not at beginning of a file\n");
949 if (!gettingfile && setjmp(restart) != 0)
953 if (size == 0 && attrsize > 0) {
959 for (i = 0; i < spcl.c_count; i++) {
960 if (!readmapflag && i > TP_NINDIR) {
962 fprintf(stderr, "spcl.c_count = %jd\n",
963 (intmax_t)spcl.c_count);
966 panic("spcl.c_count = %jd\n",
967 (intmax_t)spcl.c_count);
969 if (readmapflag || spcl.c_addr[i]) {
970 readtape(&buf[curblk++][0]);
971 if (curblk == fssize / TP_BSIZE) {
972 (*fillit)((char *)buf, (long)(size > TP_BSIZE ?
973 fssize : (curblk - 1) * TP_BSIZE + size));
978 (*fillit)((char *)buf, (long)(size > TP_BSIZE ?
980 (curblk - 1) * TP_BSIZE + size));
983 (*skip)(clearedbuf, (long)(size > TP_BSIZE ?
986 if ((size -= TP_BSIZE) <= 0) {
987 if (size > -TP_BSIZE && curblk > 0) {
988 (*fillit)((char *)buf,
989 (long)((curblk * TP_BSIZE) + size));
998 if (spcl.c_count - i > 1)
999 dprintf(stdout, "skipping %d junk block(s)\n",
1000 spcl.c_count - i - 1);
1001 for (i++; i < spcl.c_count; i++) {
1002 if (!readmapflag && i > TP_NINDIR) {
1005 "spcl.c_count = %jd\n",
1006 (intmax_t)spcl.c_count);
1009 panic("spcl.c_count = %jd\n",
1010 (intmax_t)spcl.c_count);
1012 if (readmapflag || spcl.c_addr[i])
1018 if (gethead(&spcl) == GOOD && size > 0) {
1019 if (spcl.c_type == TS_ADDR)
1022 "Missing address (header) block for %s at %ld blocks\n",
1023 curfile.name, blksread);
1026 panic("getfile: lost data\n");
1032 * These variables are shared between the next two functions.
1034 static int extbufsize = 0;
1035 static char *extbuf;
1039 * Allocate a buffer into which to extract extended attributes.
1042 setupextattr(int extsize)
1046 if (extsize <= extbufsize)
1050 if ((extbuf = malloc(extsize)) != NULL) {
1051 extbufsize = extsize;
1056 fprintf(stderr, "Cannot extract %d bytes %s for inode %d, name %s\n",
1057 extsize, "of extended attributes", curfile.ino, curfile.name);
1062 * Extract the next block of extended attributes.
1065 xtrattr(char *buf, long size)
1068 if (extloc + size > extbufsize)
1069 panic("overrun attribute buffer\n");
1070 memmove(&extbuf[extloc], buf, size);
1075 * Write out the next block of a file.
1078 xtrfile(char *buf, long size)
1083 if (write(ofile, buf, (int) size) == -1) {
1085 "write error extracting inode %d, name %s\nwrite: %s\n",
1086 curfile.ino, curfile.name, strerror(errno));
1091 * Skip over a hole in a file.
1095 xtrskip(char *buf, long size)
1098 if (lseek(ofile, size, SEEK_CUR) == -1) {
1100 "seek error extracting inode %d, name %s\nlseek: %s\n",
1101 curfile.ino, curfile.name, strerror(errno));
1107 * Collect the next block of a symbolic link.
1110 xtrlnkfile(char *buf, long size)
1114 if (pathlen > MAXPATHLEN) {
1115 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n",
1116 curfile.name, lnkbuf, buf, pathlen);
1119 (void) strcat(lnkbuf, buf);
1123 * Skip over a hole in a symbolic link (should never happen).
1127 xtrlnkskip(char *buf, long size)
1130 fprintf(stderr, "unallocated block in symbolic link %s\n",
1136 * Collect the next block of a bit map.
1139 xtrmap(char *buf, long size)
1142 memmove(map, buf, size);
1147 * Skip over a hole in a bit map (should never happen).
1151 xtrmapskip(char *buf, long size)
1154 panic("hole in map\n");
1159 * Noop, when an extraction function is not needed.
1163 xtrnull(char *buf, long size)
1170 * Read TP_BSIZE blocks from the input.
1171 * Handle read errors, and end of media.
1176 long rd, newvol, i, oldnumtrec;
1177 int cnt, seek_failed;
1179 if (blkcnt + (byteslide > 0) < numtrec) {
1180 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE);
1186 memmove(&tapebuf[-TP_BSIZE],
1187 &tapebuf[(numtrec-1) * TP_BSIZE], (long)TP_BSIZE);
1188 oldnumtrec = numtrec;
1189 for (i = 0; i < ntrec; i++)
1190 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1193 cnt = ntrec * TP_BSIZE;
1198 i = rmtread(&tapebuf[rd], cnt);
1201 i = read(mt, &tapebuf[rd], cnt);
1203 * Check for mid-tape short read error.
1204 * If found, skip rest of buffer and start with the next.
1206 if (!pipein && !pipecmdin && numtrec < ntrec && i > 0) {
1207 dprintf(stdout, "mid-media short read error.\n");
1211 * Handle partial block read.
1213 if ((pipein || pipecmdin) && i == 0 && rd > 0)
1215 else if (i > 0 && i != ntrec * TP_BSIZE) {
1216 if (pipein || pipecmdin) {
1224 * Short read. Process the blocks read.
1226 if (i % TP_BSIZE != 0)
1228 "partial block read: %ld should be %ld\n",
1229 i, ntrec * TP_BSIZE);
1230 numtrec = i / TP_BSIZE;
1234 * Handle read error.
1237 fprintf(stderr, "Tape read error while ");
1238 switch (curfile.action) {
1240 fprintf(stderr, "trying to set up tape\n");
1243 fprintf(stderr, "trying to resynchronize\n");
1246 fprintf(stderr, "restoring %s\n", curfile.name);
1249 fprintf(stderr, "skipping over inode %d\n",
1253 if (!yflag && !reply("continue"))
1255 i = ntrec * TP_BSIZE;
1256 memset(tapebuf, 0, i);
1259 seek_failed = (rmtseek(i, 1) < 0);
1262 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
1266 "continuation failed: %s\n", strerror(errno));
1271 * Handle end of tape.
1274 vprintf(stdout, "End-of-tape encountered\n");
1283 if (rd % TP_BSIZE != 0)
1284 panic("partial block read: %d should be %d\n",
1285 rd, ntrec * TP_BSIZE);
1287 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE);
1289 if (oldnumtrec == 0)
1292 blkcnt -= oldnumtrec;
1294 &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE);
1300 findtapeblksize(void)
1304 for (i = 0; i < ntrec; i++)
1305 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1309 i = rmtread(tapebuf, ntrec * TP_BSIZE);
1312 i = read(mt, tapebuf, ntrec * TP_BSIZE);
1315 fprintf(stderr, "tape read error: %s\n", strerror(errno));
1318 if (i % TP_BSIZE != 0) {
1319 fprintf(stderr, "Tape block size (%ld) %s (%d)\n",
1320 i, "is not a multiple of dump block size", TP_BSIZE);
1323 ntrec = i / TP_BSIZE;
1325 vprintf(stdout, "Tape block size is %ld\n", ntrec);
1347 * Read the next block from the tape.
1348 * If it is not any valid header, return an error.
1351 gethead(struct s_spcl *buf)
1355 readtape((char *)buf);
1356 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) {
1357 if (buf->c_magic == OFS_MAGIC) {
1359 "Format of dump tape is too old. Must use\n");
1361 "a version of restore from before 2002.\n");
1364 if (swabl(buf->c_magic) != FS_UFS2_MAGIC &&
1365 buf->c_magic != NFS_MAGIC) {
1366 if (buf->c_magic == OFS_MAGIC) {
1368 "Format of dump tape is too old. Must use\n");
1370 "a version of restore from before 2002.\n");
1375 vprintf(stdout, "Note: Doing Byte swapping\n");
1379 if (checksum((int *)buf) == FAIL)
1382 swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf);
1383 swabst((u_char *)"l",(u_char *) &buf->c_level);
1384 swabst((u_char *)"2l4q",(u_char *) &buf->c_flags);
1388 switch (buf->c_type) {
1393 * Have to patch up missing information in bit map headers
1395 buf->c_size = buf->c_count * TP_BSIZE;
1396 if (buf->c_count > TP_NINDIR)
1399 for (i = 0; i < buf->c_count; i++)
1404 if (buf->c_magic == NFS_MAGIC &&
1405 (buf->c_flags & NFS_DR_NEWINODEFMT) == 0)
1416 * For old dump tapes, have to copy up old fields to
1419 if (buf->c_magic == NFS_MAGIC) {
1420 buf->c_tapea = buf->c_old_tapea;
1421 buf->c_firstrec = buf->c_old_firstrec;
1422 buf->c_date = _time32_to_time(buf->c_old_date);
1423 buf->c_ddate = _time32_to_time(buf->c_old_ddate);
1424 buf->c_atime = _time32_to_time(buf->c_old_atime);
1425 buf->c_mtime = _time32_to_time(buf->c_old_mtime);
1426 buf->c_birthtime = 0;
1427 buf->c_birthtimensec = 0;
1433 panic("gethead: unknown inode type %d\n", buf->c_type);
1436 if (dumpdate != 0 && _time64_to_time(buf->c_date) != dumpdate)
1437 fprintf(stderr, "Header with wrong dumpdate.\n");
1439 * If we're restoring a filesystem with the old (FreeBSD 1)
1440 * format inodes, copy the uid/gid to the new location
1443 buf->c_uid = buf->c_spare1[1];
1444 buf->c_gid = buf->c_spare1[2];
1446 buf->c_magic = FS_UFS2_MAGIC;
1447 tapeaddr = buf->c_tapea;
1454 * Check that a header is where it belongs and predict the next header
1457 accthdr(struct s_spcl *header)
1459 static ino_t previno = 0x7fffffff;
1460 static int prevtype;
1461 static long predict;
1464 if (header->c_type == TS_TAPE) {
1465 fprintf(stderr, "Volume header ");
1466 if (header->c_firstrec)
1467 fprintf(stderr, "begins with record %qd",
1468 header->c_firstrec);
1469 fprintf(stderr, "\n");
1470 previno = 0x7fffffff;
1473 if (previno == 0x7fffffff)
1477 fprintf(stderr, "Dumped inodes map header");
1480 fprintf(stderr, "Used inodes map header");
1483 fprintf(stderr, "File header, ino %d", previno);
1486 fprintf(stderr, "File continuation header, ino %d", previno);
1489 fprintf(stderr, "End of tape header");
1492 if (predict != blksread - 1)
1493 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
1494 predict, blksread - 1);
1495 fprintf(stderr, "\n");
1498 if (header->c_type != TS_END)
1499 for (i = 0; i < header->c_count; i++)
1500 if (readmapflag || header->c_addr[i] != 0)
1504 prevtype = header->c_type;
1505 previno = header->c_inumber;
1509 * Find an inode header.
1510 * Complain if had to skip.
1513 findinode(struct s_spcl *header)
1515 static long skipcnt = 0;
1520 curfile.name = "<name unknown>";
1521 curfile.action = UNKNOWN;
1525 htype = header->c_type;
1530 * Skip up to the beginning of the next record
1532 for (i = 0; i < header->c_count; i++)
1533 if (header->c_addr[i])
1535 while (gethead(header) == FAIL ||
1536 _time64_to_time(header->c_date) != dumpdate) {
1540 if (byteslide < TP_BSIZE) {
1550 curfile.mode = header->c_mode;
1551 curfile.uid = header->c_uid;
1552 curfile.gid = header->c_gid;
1553 curfile.file_flags = header->c_file_flags;
1554 curfile.rdev = header->c_rdev;
1555 curfile.atime_sec = header->c_atime;
1556 curfile.atime_nsec = header->c_atimensec;
1557 curfile.mtime_sec = header->c_mtime;
1558 curfile.mtime_nsec = header->c_mtimensec;
1559 curfile.birthtime_sec = header->c_birthtime;
1560 curfile.birthtime_nsec = header->c_birthtimensec;
1561 curfile.extsize = header->c_extsize;
1562 curfile.size = header->c_size;
1563 curfile.ino = header->c_inumber;
1567 /* If we missed some tapes, get another volume. */
1568 if (tapesread & (tapesread + 1)) {
1572 curfile.ino = maxino;
1576 curfile.name = "<file removal list>";
1580 curfile.name = "<file dump list>";
1585 fprintf(stderr, "unexpected tape header\n");
1587 panic("unexpected tape header\n");
1591 fprintf(stderr, "unknown tape header type %d\n",
1594 panic("unknown tape header type %d\n",
1596 while (gethead(header) == FAIL ||
1597 _time64_to_time(header->c_date) != dumpdate) {
1601 if (byteslide < TP_BSIZE) {
1610 } while (htype == TS_ADDR);
1612 fprintf(stderr, "resync restore, skipped %ld %s\n",
1613 skipcnt, Dflag ? "bytes" : "blocks");
1622 j = sizeof(union u_spcl) / sizeof(int);
1629 /* What happens if we want to read restore tapes
1630 for a 16bit int machine??? */
1636 if (i != CHECKSUM) {
1637 fprintf(stderr, "Checksum error %o, inode %d file %s\n", i,
1638 curfile.ino, curfile.name);
1648 msg(const char *fmt, ...)
1652 (void)vfprintf(stderr, fmt, ap);
1655 #endif /* RRESTORE */
1658 swabshort(u_char *sp, int n)
1663 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
1670 swablong(u_char *sp, int n)
1675 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
1676 c = sp[2]; sp[2] = sp[1]; sp[1] = c;
1683 swabquad(u_char *sp, int n)
1688 c = sp[0]; sp[0] = sp[7]; sp[7] = c;
1689 c = sp[1]; sp[1] = sp[6]; sp[6] = c;
1690 c = sp[2]; sp[2] = sp[5]; sp[5] = c;
1691 c = sp[3]; sp[3] = sp[4]; sp[4] = c;
1698 swabst(u_char *cp, u_char *sp)
1704 case '0': case '1': case '2': case '3': case '4':
1705 case '5': case '6': case '7': case '8': case '9':
1706 n = (n * 10) + (*cp++ - '0');
1709 case 's': case 'w': case 'h':
1712 sp = swabshort(sp, n);
1718 sp = swablong(sp, n);
1724 sp = swabquad(sp, n);
1734 fprintf(stderr, "Unknown conversion character: %c\n",
1747 swabst((u_char *)"l", (u_char *)&x);