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 setuid(getuid()); /* no longer need or want root privileges */
168 magtape = strdup(source);
169 if (magtape == NULL) {
170 fprintf(stderr, "Cannot allocate space for magtape buffer\n");
176 newtapebuf(long size)
178 static int tapebufsize = -1;
181 if (size <= tapebufsize)
184 free(tapebuf - TP_BSIZE);
185 tapebuf = malloc((size+1) * TP_BSIZE);
186 if (tapebuf == NULL) {
187 fprintf(stderr, "Cannot allocate space for tape buffer\n");
195 * Verify that the tape drive can be accessed and
196 * that it actually is a dump tape.
204 vprintf(stdout, "Verify tape and initialize maps\n");
206 if (setenv("RESTORE_VOLUME", "1", 1) == -1) {
207 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
211 popenfp = popen(magtape, "r");
212 mt = popenfp ? fileno(popenfp) : -1;
216 mt = rmtopen(magtape, 0);
222 mt = open(magtape, O_RDONLY, 0);
224 fprintf(stderr, "%s: %s\n", magtape, strerror(errno));
230 if (!pipein && !pipecmdin && !bflag)
232 if (gethead(&spcl) == FAIL) {
233 fprintf(stderr, "Tape is not a dump tape\n");
237 endoftapemark.s_spcl.c_magic = FS_UFS2_MAGIC;
238 endoftapemark.s_spcl.c_type = TS_END;
239 ip = (int *)&endoftapemark;
240 j = sizeof(union u_spcl) / sizeof(int);
245 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
247 if (vflag || command == 't')
249 dumptime = _time64_to_time(spcl.c_ddate);
250 dumpdate = _time64_to_time(spcl.c_date);
251 if (stat(".", &stbuf) < 0) {
252 fprintf(stderr, "cannot stat .: %s\n", strerror(errno));
255 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
257 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
258 fssize = stbuf.st_blksize;
259 if (((fssize - 1) & fssize) != 0) {
260 fprintf(stderr, "bad block size %ld\n", fssize);
263 if (spcl.c_volume != 1) {
264 fprintf(stderr, "Tape is not volume 1 of the dump\n");
267 if (gethead(&spcl) == FAIL) {
268 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
269 panic("no header after volume mark!\n");
272 if (spcl.c_type != TS_CLRI) {
273 fprintf(stderr, "Cannot find file removal list\n");
276 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
277 dprintf(stdout, "maxino = %d\n", maxino);
278 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
280 panic("no memory for active inode map\n");
282 curfile.action = USING;
283 getfile(xtrmap, xtrmapskip, xtrmapskip);
284 if (spcl.c_type != TS_BITS) {
285 fprintf(stderr, "Cannot find file dump list\n");
288 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
289 if (map == (char *)NULL)
290 panic("no memory for file dump list\n");
292 curfile.action = USING;
293 getfile(xtrmap, xtrmapskip, xtrmapskip);
295 * If there may be whiteout entries on the tape, pretend that the
296 * whiteout inode exists, so that the whiteout entries can be
299 SETINO(WINO, dumpmap);
300 /* 'r' restores don't call getvol() for tape 1, so mark it as read. */
306 * Prompt user to load a new dump volume.
307 * "Nextvol" is the next suggested volume to use.
308 * This suggested volume is enforced when doing full
309 * or incremental restores, but can be overridden by
310 * the user when only extracting a subset of the files.
316 long i, newvol, savecnt;
317 union u_spcl tmpspcl;
318 # define tmpbuf tmpspcl.s_spcl
325 prevtapea = tapeaddr;
329 panic("Changing volumes on pipe input?\n");
330 /* Avoid looping if we couldn't ask the user. */
331 if (yflag || ferror(terminal) || feof(terminal))
340 done(1); /* pipes do not get a second chance */
341 if (command == 'R' || command == 'r' || curfile.action != SKIP)
345 while (newvol <= 0) {
346 if (tapesread == 0) {
347 fprintf(stderr, "%s%s%s%s%s%s%s",
348 "You have not read any tapes yet.\n",
349 "If you are extracting just a few files,",
350 " start with the last volume\n",
351 "and work towards the first; restore",
352 " can quickly skip tapes that\n",
353 "have no further files to extract.",
354 " Otherwise, begin with volume 1.\n");
356 fprintf(stderr, "You have read volumes");
358 for (i = 0; i < 32; i++)
359 if (tapesread & (1 << i)) {
360 fprintf(stderr, "%s%ld", buf, i + 1);
363 fprintf(stderr, "\n");
366 fprintf(stderr, "Specify next volume #: ");
367 (void) fflush(stderr);
368 if (fgets(buf, BUFSIZ, terminal) == NULL)
370 } while (buf[0] == '\n');
374 "Volume numbers are positive numerics\n");
377 if (newvol == volno) {
378 tapesread |= 1 << (volno - 1);
382 fprintf(stderr, "Mount tape volume %ld\n", newvol);
383 fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
384 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
385 (void) fflush(stderr);
386 if (fgets(buf, BUFSIZ, terminal) == NULL)
388 if (!strcmp(buf, "none\n")) {
392 if (buf[0] != '\n') {
393 (void) strcpy(magtape, buf);
394 magtape[strlen(magtape) - 1] = '\0';
397 char volno[sizeof("2147483647")];
399 (void)sprintf(volno, "%d", newvol);
400 if (setenv("RESTORE_VOLUME", volno, 1) == -1) {
401 fprintf(stderr, "Cannot set $RESTORE_VOLUME: %s\n",
405 popenfp = popen(magtape, "r");
406 mt = popenfp ? fileno(popenfp) : -1;
410 mt = rmtopen(magtape, 0);
413 mt = open(magtape, O_RDONLY, 0);
416 fprintf(stderr, "Cannot open %s\n", magtape);
424 if (gethead(&tmpbuf) == FAIL) {
425 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
426 fprintf(stderr, "tape is not dump tape\n");
430 if (tmpbuf.c_volume != volno) {
431 fprintf(stderr, "Wrong volume (%ld)\n", tmpbuf.c_volume);
435 if (_time64_to_time(tmpbuf.c_date) != dumpdate ||
436 _time64_to_time(tmpbuf.c_ddate) != dumptime) {
437 time_t t = _time64_to_time(tmpbuf.c_date);
438 fprintf(stderr, "Wrong dump date\n\tgot: %s", ctime(&t));
439 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
443 tapesread |= 1 << (volno - 1);
446 * If continuing from the previous volume, skip over any
447 * blocks read already at the end of the previous volume.
449 * If coming to this volume at random, skip to the beginning
450 * of the next record.
452 dprintf(stdout, "last rec %qd, tape starts with %qd\n", prevtapea,
454 if (tmpbuf.c_type == TS_TAPE) {
455 if (curfile.action != USING) {
457 * XXX Dump incorrectly sets c_count to 1 in the
458 * volume header of the first tape, so ignore
459 * c_count when volno == 1.
462 for (i = tmpbuf.c_count; i > 0; i--)
464 } else if (tmpbuf.c_tapea <= prevtapea) {
466 * Normally the value of c_tapea in the volume
467 * header is the record number of the header itself.
468 * However in the volume header following an EOT-
469 * terminated tape, it is the record number of the
470 * first continuation data block (dump bug?).
472 * The next record we want is `prevtapea + 1'.
474 i = prevtapea + 1 - tmpbuf.c_tapea;
475 dprintf(stderr, "Skipping %ld duplicate record%s.\n",
476 i, i > 1 ? "s" : "");
481 if (curfile.action == USING) {
483 panic("active file into volume 1\n");
486 (void) gethead(&spcl);
495 * Handle unexpected EOF.
501 if (gettingfile && curfile.action == USING) {
502 printf("Warning: %s %s\n",
503 "End-of-input encountered while extracting", curfile.name);
505 curfile.name = "<name unknown>";
506 curfile.action = UNKNOWN;
508 curfile.ino = maxino;
516 * handle multiple dumps per tape by skipping forward to the
524 if (dumpnum == 1 || volno != 1)
527 fprintf(stderr, "Cannot have multiple dumps on pipe input\n");
531 tcom.mt_count = dumpnum - 1;
534 rmtioctl(MTFSF, dumpnum - 1);
537 if (!pipecmdin && ioctl(mt, MTIOCTOP, (char *)&tcom) < 0)
538 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno));
545 t = _time64_to_time(spcl.c_date);
546 fprintf(stdout, "Dump date: %s", ctime(&t));
547 t = _time64_to_time(spcl.c_ddate);
548 fprintf(stdout, "Dumped from: %s",
549 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&t));
550 if (spcl.c_host[0] == '\0')
552 fprintf(stderr, "Level %ld dump of %s on %s:%s\n",
553 spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
554 fprintf(stderr, "Label: %s\n", spcl.c_label);
558 extractfile(char *name)
565 struct timeval mtimep[2], ctimep[2];
570 curfile.action = USING;
571 mtimep[0].tv_sec = curfile.atime_sec;
572 mtimep[0].tv_usec = curfile.atime_nsec / 1000;
573 mtimep[1].tv_sec = curfile.mtime_sec;
574 mtimep[1].tv_usec = curfile.mtime_nsec / 1000;
575 ctimep[0].tv_sec = curfile.atime_sec;
576 ctimep[0].tv_usec = curfile.atime_nsec / 1000;
577 ctimep[1].tv_sec = curfile.birthtime_sec;
578 ctimep[1].tv_usec = curfile.birthtime_nsec / 1000;
579 extsize = curfile.extsize;
585 flags = curfile.file_flags;
586 switch (mode & IFMT) {
589 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
594 vprintf(stdout, "skipped socket %s\n", name);
600 ep = lookupname(name);
601 if (ep == NULL || ep->e_flags & EXTRACT)
602 panic("unextracted directory %s\n", name);
606 vprintf(stdout, "extract file %s\n", name);
607 return (genliteraldir(name, curfile.ino));
612 buf = setupextattr(extsize);
613 getfile(xtrlnkfile, xtrattr, xtrlnkskip);
616 "%s: zero length symbolic link (ignored)\n", name);
619 if (linkit(lnkbuf, name, SYMLINK) == GOOD) {
621 set_extattr_link(name, buf, extsize);
622 (void) lchown(name, uid, gid);
623 (void) lchmod(name, mode);
624 (void) lutimes(name, ctimep);
625 (void) lutimes(name, mtimep);
626 (void) lchflags(name, flags);
632 vprintf(stdout, "extract fifo %s\n", name);
639 if (mkfifo(name, 0600) < 0) {
640 fprintf(stderr, "%s: cannot create fifo: %s\n",
641 name, strerror(errno));
648 buf = setupextattr(extsize);
649 getfile(xtrnull, xtrattr, xtrnull);
650 set_extattr_file(name, buf, extsize);
652 (void) chown(name, uid, gid);
653 (void) chmod(name, mode);
654 (void) utimes(name, ctimep);
655 (void) utimes(name, mtimep);
656 (void) chflags(name, flags);
661 vprintf(stdout, "extract special file %s\n", name);
668 if (mknod(name, (mode & (IFCHR | IFBLK)) | 0600,
669 (int)curfile.rdev) < 0) {
670 fprintf(stderr, "%s: cannot create special file: %s\n",
671 name, strerror(errno));
678 buf = setupextattr(extsize);
679 getfile(xtrnull, xtrattr, xtrnull);
680 set_extattr_file(name, buf, extsize);
682 (void) chown(name, uid, gid);
683 (void) chmod(name, mode);
684 (void) utimes(name, ctimep);
685 (void) utimes(name, mtimep);
686 (void) chflags(name, flags);
690 vprintf(stdout, "extract file %s\n", name);
697 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
699 fprintf(stderr, "%s: cannot create file: %s\n",
700 name, strerror(errno));
704 buf = setupextattr(extsize);
705 getfile(xtrfile, xtrattr, xtrskip);
707 set_extattr_fd(ofile, name, buf, extsize);
708 (void) fchown(ofile, uid, gid);
709 (void) fchmod(ofile, mode);
710 (void) futimes(ofile, ctimep);
711 (void) futimes(ofile, mtimep);
712 (void) fchflags(ofile, flags);
720 * Set attributes for a file.
723 set_extattr_file(char *name, void *buf, int size)
725 struct extattr *eap, *eaend;
727 vprintf(stdout, "Set attributes for %s:", name);
729 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
731 * Make sure this entry is complete.
733 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
734 dprintf(stdout, "\n\t%scorrupted",
735 eap == buf ? "" : "remainder ");
738 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
740 vprintf(stdout, "\n\t%s, (%d bytes), %*s",
741 namespace_names[eap->ea_namespace], eap->ea_length,
742 eap->ea_namelength, eap->ea_name);
744 * First we try the general attribute setting interface.
745 * However, some attributes can only be set by root or
746 * by using special interfaces (for example, ACLs).
748 if (extattr_set_file(name, eap->ea_namespace, eap->ea_name,
749 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) {
750 dprintf(stdout, " (set using extattr_set_file)");
754 * If the general interface refuses to set the attribute,
755 * then we try all the specialized interfaces that we
758 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
759 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) {
760 if (acl_set_file(name, ACL_TYPE_ACCESS,
761 EXTATTR_CONTENT(eap)) != -1) {
762 dprintf(stdout, " (set using acl_set_file)");
766 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
767 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) {
768 if (acl_set_file(name, ACL_TYPE_DEFAULT,
769 EXTATTR_CONTENT(eap)) != -1) {
770 dprintf(stdout, " (set using acl_set_file)");
774 vprintf(stdout, " (unable to set)");
776 vprintf(stdout, "\n");
780 * Set attributes for a symbolic link.
783 set_extattr_link(char *name, void *buf, int size)
785 struct extattr *eap, *eaend;
787 vprintf(stdout, "Set attributes for %s:", name);
789 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
791 * Make sure this entry is complete.
793 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
794 dprintf(stdout, "\n\t%scorrupted",
795 eap == buf ? "" : "remainder ");
798 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
800 vprintf(stdout, "\n\t%s, (%d bytes), %*s",
801 namespace_names[eap->ea_namespace], eap->ea_length,
802 eap->ea_namelength, eap->ea_name);
804 * First we try the general attribute setting interface.
805 * However, some attributes can only be set by root or
806 * by using special interfaces (for example, ACLs).
808 if (extattr_set_link(name, eap->ea_namespace, eap->ea_name,
809 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) {
810 dprintf(stdout, " (set using extattr_set_link)");
814 * If the general interface refuses to set the attribute,
815 * then we try all the specialized interfaces that we
818 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
819 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) {
820 if (acl_set_link_np(name, ACL_TYPE_ACCESS,
821 EXTATTR_CONTENT(eap)) != -1) {
822 dprintf(stdout, " (set using acl_set_link_np)");
826 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
827 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) {
828 if (acl_set_link_np(name, ACL_TYPE_DEFAULT,
829 EXTATTR_CONTENT(eap)) != -1) {
830 dprintf(stdout, " (set using acl_set_link_np)");
834 vprintf(stdout, " (unable to set)");
836 vprintf(stdout, "\n");
840 * Set attributes on a file descriptor.
843 set_extattr_fd(int fd, char *name, void *buf, int size)
845 struct extattr *eap, *eaend;
847 vprintf(stdout, "Set attributes for %s:", name);
849 for (eap = buf; eap < eaend; eap = EXTATTR_NEXT(eap)) {
851 * Make sure this entry is complete.
853 if (EXTATTR_NEXT(eap) > eaend || eap->ea_length <= 0) {
854 dprintf(stdout, "\n\t%scorrupted",
855 eap == buf ? "" : "remainder ");
858 if (eap->ea_namespace == EXTATTR_NAMESPACE_EMPTY)
860 vprintf(stdout, "\n\t%s, (%d bytes), %*s",
861 namespace_names[eap->ea_namespace], eap->ea_length,
862 eap->ea_namelength, eap->ea_name);
864 * First we try the general attribute setting interface.
865 * However, some attributes can only be set by root or
866 * by using special interfaces (for example, ACLs).
868 if (extattr_set_fd(fd, eap->ea_namespace, eap->ea_name,
869 EXTATTR_CONTENT(eap), EXTATTR_CONTENT_SIZE(eap)) != -1) {
870 dprintf(stdout, " (set using extattr_set_fd)");
874 * If the general interface refuses to set the attribute,
875 * then we try all the specialized interfaces that we
878 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
879 !strcmp(eap->ea_name, POSIX1E_ACL_ACCESS_EXTATTR_NAME)) {
880 if (acl_set_fd(fd, EXTATTR_CONTENT(eap)) != -1) {
881 dprintf(stdout, " (set using acl_set_fd)");
885 if (eap->ea_namespace == EXTATTR_NAMESPACE_SYSTEM &&
886 !strcmp(eap->ea_name, POSIX1E_ACL_DEFAULT_EXTATTR_NAME)) {
887 if (acl_set_file(name, ACL_TYPE_DEFAULT,
888 EXTATTR_CONTENT(eap)) != -1) {
889 dprintf(stdout, " (set using acl_set_file)");
893 vprintf(stdout, " (unable to set)");
895 vprintf(stdout, "\n");
899 * skip over bit maps on the tape
905 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
910 * skip over a file on the tape
916 curfile.action = SKIP;
917 getfile(xtrnull, xtrnull, xtrnull);
921 * Extract a file from the tape.
922 * When an allocated block is found it is passed to the fill function;
923 * when an unallocated block (hole) is found, a zeroed buffer is passed
924 * to the skip function.
927 getfile(void (*datafill)(char *, long), void (*attrfill)(char *, long),
928 void (*skip)(char *, long))
932 int curblk, attrsize;
933 void (*fillit)(char *, long);
934 static char clearedbuf[MAXBSIZE];
935 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
940 attrsize = spcl.c_extsize;
941 if (spcl.c_type == TS_END)
942 panic("ran off end of tape\n");
943 if (spcl.c_magic != FS_UFS2_MAGIC)
944 panic("not at beginning of a file\n");
945 if (!gettingfile && setjmp(restart) != 0)
949 if (size == 0 && attrsize > 0) {
955 for (i = 0; i < spcl.c_count; i++) {
956 if (!readmapflag && i > TP_NINDIR) {
958 fprintf(stderr, "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]) {
966 readtape(&buf[curblk++][0]);
967 if (curblk == fssize / TP_BSIZE) {
968 (*fillit)((char *)buf, (long)(size > TP_BSIZE ?
969 fssize : (curblk - 1) * TP_BSIZE + size));
974 (*fillit)((char *)buf, (long)(size > TP_BSIZE ?
976 (curblk - 1) * TP_BSIZE + size));
979 (*skip)(clearedbuf, (long)(size > TP_BSIZE ?
982 if ((size -= TP_BSIZE) <= 0) {
983 if (size > -TP_BSIZE && curblk > 0) {
984 (*fillit)((char *)buf,
985 (long)((curblk * TP_BSIZE) + size));
994 if (spcl.c_count - i > 1)
995 dprintf(stdout, "skipping %d junk block(s)\n",
996 spcl.c_count - i - 1);
997 for (i++; i < spcl.c_count; i++) {
998 if (!readmapflag && i > TP_NINDIR) {
1001 "spcl.c_count = %jd\n",
1002 (intmax_t)spcl.c_count);
1005 panic("spcl.c_count = %jd\n",
1006 (intmax_t)spcl.c_count);
1008 if (readmapflag || spcl.c_addr[i])
1014 if (gethead(&spcl) == GOOD && size > 0) {
1015 if (spcl.c_type == TS_ADDR)
1018 "Missing address (header) block for %s at %ld blocks\n",
1019 curfile.name, blksread);
1022 panic("getfile: lost data\n");
1028 * These variables are shared between the next two functions.
1030 static int extbufsize = 0;
1031 static char *extbuf;
1035 * Allocate a buffer into which to extract extended attributes.
1038 setupextattr(int extsize)
1042 if (extsize <= extbufsize)
1046 if ((extbuf = malloc(extsize)) != NULL) {
1047 extbufsize = extsize;
1052 fprintf(stderr, "Cannot extract %d bytes %s for inode %d, name %s\n",
1053 extsize, "of extended attributes", curfile.ino, curfile.name);
1058 * Extract the next block of extended attributes.
1061 xtrattr(char *buf, long size)
1064 if (extloc + size > extbufsize)
1065 panic("overrun attribute buffer\n");
1066 memmove(&extbuf[extloc], buf, size);
1071 * Write out the next block of a file.
1074 xtrfile(char *buf, long size)
1079 if (write(ofile, buf, (int) size) == -1) {
1081 "write error extracting inode %d, name %s\nwrite: %s\n",
1082 curfile.ino, curfile.name, strerror(errno));
1087 * Skip over a hole in a file.
1091 xtrskip(char *buf, long size)
1094 if (lseek(ofile, size, SEEK_CUR) == -1) {
1096 "seek error extracting inode %d, name %s\nlseek: %s\n",
1097 curfile.ino, curfile.name, strerror(errno));
1103 * Collect the next block of a symbolic link.
1106 xtrlnkfile(char *buf, long size)
1110 if (pathlen > MAXPATHLEN) {
1111 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n",
1112 curfile.name, lnkbuf, buf, pathlen);
1115 (void) strcat(lnkbuf, buf);
1119 * Skip over a hole in a symbolic link (should never happen).
1123 xtrlnkskip(char *buf, long size)
1126 fprintf(stderr, "unallocated block in symbolic link %s\n",
1132 * Collect the next block of a bit map.
1135 xtrmap(char *buf, long size)
1138 memmove(map, buf, size);
1143 * Skip over a hole in a bit map (should never happen).
1147 xtrmapskip(char *buf, long size)
1150 panic("hole in map\n");
1155 * Noop, when an extraction function is not needed.
1159 xtrnull(char *buf, long size)
1166 * Read TP_BSIZE blocks from the input.
1167 * Handle read errors, and end of media.
1172 long rd, newvol, i, oldnumtrec;
1173 int cnt, seek_failed;
1175 if (blkcnt + (byteslide > 0) < numtrec) {
1176 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE);
1182 memmove(&tapebuf[-TP_BSIZE],
1183 &tapebuf[(numtrec-1) * TP_BSIZE], (long)TP_BSIZE);
1184 oldnumtrec = numtrec;
1185 for (i = 0; i < ntrec; i++)
1186 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1189 cnt = ntrec * TP_BSIZE;
1194 i = rmtread(&tapebuf[rd], cnt);
1197 i = read(mt, &tapebuf[rd], cnt);
1199 * Check for mid-tape short read error.
1200 * If found, skip rest of buffer and start with the next.
1202 if (!pipein && !pipecmdin && numtrec < ntrec && i > 0) {
1203 dprintf(stdout, "mid-media short read error.\n");
1207 * Handle partial block read.
1209 if ((pipein || pipecmdin) && i == 0 && rd > 0)
1211 else if (i > 0 && i != ntrec * TP_BSIZE) {
1212 if (pipein || pipecmdin) {
1220 * Short read. Process the blocks read.
1222 if (i % TP_BSIZE != 0)
1224 "partial block read: %ld should be %ld\n",
1225 i, ntrec * TP_BSIZE);
1226 numtrec = i / TP_BSIZE;
1230 * Handle read error.
1233 fprintf(stderr, "Tape read error while ");
1234 switch (curfile.action) {
1236 fprintf(stderr, "trying to set up tape\n");
1239 fprintf(stderr, "trying to resynchronize\n");
1242 fprintf(stderr, "restoring %s\n", curfile.name);
1245 fprintf(stderr, "skipping over inode %d\n",
1249 if (!yflag && !reply("continue"))
1251 i = ntrec * TP_BSIZE;
1252 memset(tapebuf, 0, i);
1255 seek_failed = (rmtseek(i, 1) < 0);
1258 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
1262 "continuation failed: %s\n", strerror(errno));
1267 * Handle end of tape.
1270 vprintf(stdout, "End-of-tape encountered\n");
1279 if (rd % TP_BSIZE != 0)
1280 panic("partial block read: %d should be %d\n",
1281 rd, ntrec * TP_BSIZE);
1283 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE);
1285 if (oldnumtrec == 0)
1288 blkcnt -= oldnumtrec;
1290 &tapebuf[(blkcnt++ * TP_BSIZE) + byteslide], (long)TP_BSIZE);
1296 findtapeblksize(void)
1300 for (i = 0; i < ntrec; i++)
1301 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1305 i = rmtread(tapebuf, ntrec * TP_BSIZE);
1308 i = read(mt, tapebuf, ntrec * TP_BSIZE);
1311 fprintf(stderr, "tape read error: %s\n", strerror(errno));
1314 if (i % TP_BSIZE != 0) {
1315 fprintf(stderr, "Tape block size (%ld) %s (%d)\n",
1316 i, "is not a multiple of dump block size", TP_BSIZE);
1319 ntrec = i / TP_BSIZE;
1321 vprintf(stdout, "Tape block size is %ld\n", ntrec);
1343 * Read the next block from the tape.
1344 * If it is not any valid header, return an error.
1347 gethead(struct s_spcl *buf)
1351 readtape((char *)buf);
1352 if (buf->c_magic != FS_UFS2_MAGIC && buf->c_magic != NFS_MAGIC) {
1353 if (buf->c_magic == OFS_MAGIC) {
1355 "Format of dump tape is too old. Must use\n");
1357 "a version of restore from before 2002.\n");
1360 if (swabl(buf->c_magic) != FS_UFS2_MAGIC &&
1361 buf->c_magic != NFS_MAGIC) {
1362 if (buf->c_magic == OFS_MAGIC) {
1364 "Format of dump tape is too old. Must use\n");
1366 "a version of restore from before 2002.\n");
1371 vprintf(stdout, "Note: Doing Byte swapping\n");
1375 if (checksum((int *)buf) == FAIL)
1378 swabst((u_char *)"8l4s1q8l2q17l", (u_char *)buf);
1379 swabst((u_char *)"l",(u_char *) &buf->c_level);
1380 swabst((u_char *)"2l4q",(u_char *) &buf->c_flags);
1384 switch (buf->c_type) {
1389 * Have to patch up missing information in bit map headers
1391 buf->c_size = buf->c_count * TP_BSIZE;
1392 if (buf->c_count > TP_NINDIR)
1395 for (i = 0; i < buf->c_count; i++)
1400 if (buf->c_magic == NFS_MAGIC &&
1401 (buf->c_flags & NFS_DR_NEWINODEFMT) == 0)
1412 * For old dump tapes, have to copy up old fields to
1415 if (buf->c_magic == NFS_MAGIC) {
1416 buf->c_tapea = buf->c_old_tapea;
1417 buf->c_firstrec = buf->c_old_firstrec;
1418 buf->c_date = _time32_to_time(buf->c_old_date);
1419 buf->c_ddate = _time32_to_time(buf->c_old_ddate);
1420 buf->c_atime = _time32_to_time(buf->c_old_atime);
1421 buf->c_mtime = _time32_to_time(buf->c_old_mtime);
1422 buf->c_birthtime = 0;
1423 buf->c_birthtimensec = 0;
1429 panic("gethead: unknown inode type %d\n", buf->c_type);
1432 if (dumpdate != 0 && _time64_to_time(buf->c_date) != dumpdate)
1433 fprintf(stderr, "Header with wrong dumpdate.\n");
1435 * If we're restoring a filesystem with the old (FreeBSD 1)
1436 * format inodes, copy the uid/gid to the new location
1439 buf->c_uid = buf->c_spare1[1];
1440 buf->c_gid = buf->c_spare1[2];
1442 buf->c_magic = FS_UFS2_MAGIC;
1443 tapeaddr = buf->c_tapea;
1450 * Check that a header is where it belongs and predict the next header
1453 accthdr(struct s_spcl *header)
1455 static ino_t previno = 0x7fffffff;
1456 static int prevtype;
1457 static long predict;
1460 if (header->c_type == TS_TAPE) {
1461 fprintf(stderr, "Volume header ");
1462 if (header->c_firstrec)
1463 fprintf(stderr, "begins with record %qd",
1464 header->c_firstrec);
1465 fprintf(stderr, "\n");
1466 previno = 0x7fffffff;
1469 if (previno == 0x7fffffff)
1473 fprintf(stderr, "Dumped inodes map header");
1476 fprintf(stderr, "Used inodes map header");
1479 fprintf(stderr, "File header, ino %d", previno);
1482 fprintf(stderr, "File continuation header, ino %d", previno);
1485 fprintf(stderr, "End of tape header");
1488 if (predict != blksread - 1)
1489 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
1490 predict, blksread - 1);
1491 fprintf(stderr, "\n");
1494 if (header->c_type != TS_END)
1495 for (i = 0; i < header->c_count; i++)
1496 if (readmapflag || header->c_addr[i] != 0)
1500 prevtype = header->c_type;
1501 previno = header->c_inumber;
1505 * Find an inode header.
1506 * Complain if had to skip.
1509 findinode(struct s_spcl *header)
1511 static long skipcnt = 0;
1516 curfile.name = "<name unknown>";
1517 curfile.action = UNKNOWN;
1521 htype = header->c_type;
1526 * Skip up to the beginning of the next record
1528 for (i = 0; i < header->c_count; i++)
1529 if (header->c_addr[i])
1531 while (gethead(header) == FAIL ||
1532 _time64_to_time(header->c_date) != dumpdate) {
1536 if (byteslide < TP_BSIZE) {
1546 curfile.mode = header->c_mode;
1547 curfile.uid = header->c_uid;
1548 curfile.gid = header->c_gid;
1549 curfile.file_flags = header->c_file_flags;
1550 curfile.rdev = header->c_rdev;
1551 curfile.atime_sec = header->c_atime;
1552 curfile.atime_nsec = header->c_atimensec;
1553 curfile.mtime_sec = header->c_mtime;
1554 curfile.mtime_nsec = header->c_mtimensec;
1555 curfile.birthtime_sec = header->c_birthtime;
1556 curfile.birthtime_nsec = header->c_birthtimensec;
1557 curfile.extsize = header->c_extsize;
1558 curfile.size = header->c_size;
1559 curfile.ino = header->c_inumber;
1563 /* If we missed some tapes, get another volume. */
1564 if (tapesread & (tapesread + 1)) {
1568 curfile.ino = maxino;
1572 curfile.name = "<file removal list>";
1576 curfile.name = "<file dump list>";
1581 fprintf(stderr, "unexpected tape header\n");
1583 panic("unexpected tape header\n");
1587 fprintf(stderr, "unknown tape header type %d\n",
1590 panic("unknown tape header type %d\n",
1592 while (gethead(header) == FAIL ||
1593 _time64_to_time(header->c_date) != dumpdate) {
1597 if (byteslide < TP_BSIZE) {
1606 } while (htype == TS_ADDR);
1608 fprintf(stderr, "resync restore, skipped %ld %s\n",
1609 skipcnt, Dflag ? "bytes" : "blocks");
1618 j = sizeof(union u_spcl) / sizeof(int);
1625 /* What happens if we want to read restore tapes
1626 for a 16bit int machine??? */
1632 if (i != CHECKSUM) {
1633 fprintf(stderr, "Checksum error %o, inode %d file %s\n", i,
1634 curfile.ino, curfile.name);
1644 msg(const char *fmt, ...)
1648 (void)vfprintf(stderr, fmt, ap);
1651 #endif /* RRESTORE */
1654 swabshort(u_char *sp, int n)
1659 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
1666 swablong(u_char *sp, int n)
1671 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
1672 c = sp[2]; sp[2] = sp[1]; sp[1] = c;
1679 swabquad(u_char *sp, int n)
1684 c = sp[0]; sp[0] = sp[7]; sp[7] = c;
1685 c = sp[1]; sp[1] = sp[6]; sp[6] = c;
1686 c = sp[2]; sp[2] = sp[5]; sp[5] = c;
1687 c = sp[3]; sp[3] = sp[4]; sp[4] = c;
1694 swabst(u_char *cp, u_char *sp)
1700 case '0': case '1': case '2': case '3': case '4':
1701 case '5': case '6': case '7': case '8': case '9':
1702 n = (n * 10) + (*cp++ - '0');
1705 case 's': case 'w': case 'h':
1708 sp = swabshort(sp, n);
1714 sp = swablong(sp, n);
1720 sp = swabquad(sp, n);
1730 fprintf(stderr, "Unknown conversion character: %c\n",
1743 swabst((u_char *)"l", (u_char *)&x);