2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@cybercable.fr>, 1999
10 * Copyright (c) 1983, 1993
11 * The Regents of the University of California. All rights reserved.
12 * (c) UNIX System Laboratories, Inc.
13 * All or some portions of this file are derived from material licensed
14 * to the University of California by American Telephone and Telegraph
15 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
16 * the permission of UNIX System Laboratories, Inc.
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. All advertising materials mentioning features or use of this software
27 * must display the following acknowledgement:
28 * This product includes software developed by the University of
29 * California, Berkeley and its contributors.
30 * 4. Neither the name of the University nor the names of its contributors
31 * may be used to endorse or promote products derived from this software
32 * without specific prior written permission.
34 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
35 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
49 static char sccsid[] = "@(#)tape.c 8.9 (Berkeley) 5/1/95";
51 static const char rcsid[] =
52 "$Id: tape.c,v 1.2 1999/10/11 12:53:24 stelian Exp $";
55 #include <sys/param.h>
62 #include <linux/ext2_fs.h>
63 #include <bsdcompat.h>
65 #include <ufs/ufs/dinode.h>
66 #endif /* __linux__ */
67 #include <protocols/dumprestore.h>
77 #include <ext2fs/ext2fs.h>
82 #include "pathnames.h"
84 static long fssize = MAXBSIZE;
86 static int pipein = 0;
91 static union u_spcl endoftapemark;
92 static long blksread; /* blocks read since last header */
93 static long tpblksread = 0; /* TP_BSIZE blocks read */
94 static long tapesread;
95 static jmp_buf restart;
96 static int gettingfile = 0; /* restart has a valid frame */
97 static char *host = NULL;
101 static char lnkbuf[MAXPATHLEN + 1];
104 int oldinofmt; /* old inode format conversion required */
105 int Bcvt; /* Swap Bytes (for CCI or sun) */
106 static int Qcvt; /* Swap quads (for sun) */
108 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
110 static void accthdr __P((struct s_spcl *));
111 static int checksum __P((int *));
112 static void findinode __P((struct s_spcl *));
113 static void findtapeblksize __P((void));
114 static int gethead __P((struct s_spcl *));
115 static void readtape __P((char *));
116 static void setdumpnum __P((void));
117 static u_long swabl __P((u_long));
118 static u_char *swablong __P((u_char *, int));
119 static u_char *swabshort __P((u_char *, int));
120 static void terminateinput __P((void));
121 static void xtrfile __P((char *, long));
122 static void xtrlnkfile __P((char *, long));
123 static void xtrlnkskip __P((char *, long));
124 static void xtrmap __P((char *, long));
125 static void xtrmapskip __P((char *, long));
126 static void xtrskip __P((char *, long));
128 static int readmapflag;
131 * Set up an input source
141 newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC);
145 if (strchr(source, ':')) {
147 source = strchr(host, ':');
149 if (rmthost(host) == 0)
153 if (strcmp(source, "-") == 0) {
155 * Since input is coming from a pipe we must establish
156 * our own connection to the terminal.
158 terminal = fopen(_PATH_TTY, "r");
159 if (terminal == NULL) {
160 (void)fprintf(stderr, "cannot open %s: %s\n",
161 _PATH_TTY, strerror(errno));
162 terminal = fopen(_PATH_DEVNULL, "r");
163 if (terminal == NULL) {
164 (void)fprintf(stderr, "cannot open %s: %s\n",
165 _PATH_DEVNULL, strerror(errno));
171 setuid(getuid()); /* no longer need or want root privileges */
172 magtape = strdup(source);
173 if (magtape == NULL) {
174 fprintf(stderr, "Cannot allocate space for magtape buffer\n");
183 static tapebufsize = -1;
186 if (size <= tapebufsize)
190 tapebuf = malloc(size * TP_BSIZE);
191 if (tapebuf == NULL) {
192 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");
211 mt = rmtopen(magtape, 0);
217 mt = open(magtape, O_RDONLY, 0);
219 fprintf(stderr, "%s: %s\n", magtape, strerror(errno));
225 if (!pipein && !bflag)
227 if (gethead(&spcl) == FAIL) {
228 blkcnt--; /* push back this block */
232 if (gethead(&spcl) == FAIL) {
233 fprintf(stderr, "Tape is not a dump tape\n");
236 fprintf(stderr, "Converting to new file system format.\n");
239 endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC;
240 endoftapemark.s_spcl.c_type = TS_END;
241 ip = (int *)&endoftapemark;
242 j = sizeof(union u_spcl) / sizeof(int);
247 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
249 if (vflag || command == 't' || command == 'C')
251 if (filesys == NULL) {
252 filesys = spcl.c_filesys;
254 dumptime = spcl.c_ddate;
255 dumpdate = spcl.c_date;
256 if (stat(".", &stbuf) < 0) {
257 fprintf(stderr, "cannot stat .: %s\n", strerror(errno));
260 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
262 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
263 fssize = stbuf.st_blksize;
264 if (((fssize - 1) & fssize) != 0) {
265 fprintf(stderr, "bad block size %ld\n", fssize);
268 if (spcl.c_volume != 1) {
269 fprintf(stderr, "Tape is not volume 1 of the dump\n");
272 if (gethead(&spcl) == FAIL) {
273 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
274 panic("no header after volume mark!\n");
277 if (spcl.c_type != TS_CLRI) {
278 fprintf(stderr, "Cannot find file removal list\n");
281 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
282 dprintf(stdout, "maxino = %ld\n", maxino);
283 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
285 panic("no memory for active inode map\n");
287 curfile.action = USING;
288 getfile(xtrmap, xtrmapskip);
289 if (spcl.c_type != TS_BITS) {
290 fprintf(stderr, "Cannot find file dump list\n");
293 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
294 if (map == (char *)NULL)
295 panic("no memory for file dump list\n");
297 curfile.action = USING;
298 getfile(xtrmap, xtrmapskip);
300 * If there may be whiteout entries on the tape, pretend that the
301 * whiteout inode exists, so that the whiteout entries can be
305 SETINO(WINO, dumpmap);
309 * Prompt user to load a new dump volume.
310 * "Nextvol" is the next suggested volume to use.
311 * This suggested volume is enforced when doing full
312 * or incremental restores, but can be overridden by
313 * the user when only extracting a subset of the files.
319 long newvol=0, savecnt=0, wantnext=0, i;
320 union u_spcl tmpspcl;
321 # define tmpbuf tmpspcl.s_spcl
330 panic("Changing volumes on pipe input?\n");
338 done(1); /* pipes do not get a second chance */
339 if (command == 'R' || command == 'r' || curfile.action != SKIP) {
346 while (newvol <= 0) {
347 if (tapesread == 0) {
348 fprintf(stderr, "%s%s%s%s%s",
349 "You have not read any tapes yet.\n",
350 "Unless you know which volume your",
351 " file(s) are on you should start\n",
352 "with the last volume and work",
353 " towards the first.\n");
355 fprintf(stderr, "You have read volumes");
357 for (i = 1; i < 32; i++)
358 if (tapesread & (1 << i)) {
359 fprintf(stderr, "%s%ld", buf, i);
362 fprintf(stderr, "\n");
365 fprintf(stderr, "Specify next volume #: ");
366 (void) fflush(stderr);
367 (void) fgets(buf, BUFSIZ, terminal);
368 } while (!feof(terminal) && buf[0] == '\n');
374 "Volume numbers are positive numerics\n");
377 if (newvol == volno) {
378 tapesread |= 1 << volno;
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 (void) fgets(buf, BUFSIZ, terminal);
389 if (!strcmp(buf, "none\n")) {
393 if (buf[0] != '\n') {
394 (void) strcpy(magtape, buf);
395 magtape[strlen(magtape) - 1] = '\0';
399 mt = rmtopen(magtape, 0);
402 mt = open(magtape, O_RDONLY, 0);
405 fprintf(stderr, "Cannot open %s\n", magtape);
413 if (gethead(&tmpbuf) == FAIL) {
414 dprintf(stdout, "header read failed at %ld blocks\n", blksread);
415 fprintf(stderr, "tape is not dump tape\n");
419 if (tmpbuf.c_volume != volno) {
420 fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume);
424 if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) {
426 fprintf(stderr, "Wrong dump date\n\tgot: %s",
427 ctime4(&tmpbuf.c_date));
428 fprintf(stderr, "\twanted: %s", ctime4(&dumpdate));
430 fprintf(stderr, "Wrong dump date\n\tgot: %s",
431 ctime(&tmpbuf.c_date));
432 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
437 tapesread |= 1 << volno;
440 * If continuing from the previous volume, skip over any
441 * blocks read already at the end of the previous volume.
443 * If coming to this volume at random, skip to the beginning
444 * of the next record.
446 dprintf(stdout, "read %ld recs, tape starts with %d\n",
447 tpblksread, tmpbuf.c_firstrec);
448 if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) {
450 tpblksread = tmpbuf.c_firstrec;
451 for (i = tmpbuf.c_count; i > 0; i--)
453 } else if (tmpbuf.c_firstrec > 0 &&
454 tmpbuf.c_firstrec < tpblksread - 1) {
456 * -1 since we've read the volume header
458 i = tpblksread - tmpbuf.c_firstrec - 1;
459 dprintf(stderr, "Skipping %ld duplicate record%s.\n",
460 i, i > 1 ? "s" : "");
465 if (curfile.action == USING) {
467 panic("active file into volume 1\n");
471 * Skip up to the beginning of the next record
473 if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER))
474 for (i = tmpbuf.c_count; i > 0; i--)
476 (void) gethead(&spcl);
485 * Handle unexpected EOF.
491 if (gettingfile && curfile.action == USING) {
492 printf("Warning: %s %s\n",
493 "End-of-input encountered while extracting", curfile.name);
495 curfile.name = "<name unknown>";
496 curfile.action = UNKNOWN;
498 curfile.ino = maxino;
506 * handle multiple dumps per tape by skipping forward to the
514 if (dumpnum == 1 || volno != 1)
517 fprintf(stderr, "Cannot have multiple dumps on pipe input\n");
521 tcom.mt_count = dumpnum - 1;
524 rmtioctl(MTFSF, dumpnum - 1);
527 if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0)
528 fprintf(stderr, "ioctl MTFSF: %s\n", strerror(errno));
535 fprintf(stdout, "Dump date: %s", ctime4(&spcl.c_date));
536 fprintf(stdout, "Dumped from: %s",
537 (spcl.c_ddate == 0) ? "the epoch\n" : ctime4(&spcl.c_ddate));
539 fprintf(stdout, "Dump date: %s", ctime(&spcl.c_date));
540 fprintf(stdout, "Dumped from: %s",
541 (spcl.c_ddate == 0) ? "the epoch\n" : ctime(&spcl.c_ddate));
543 if (spcl.c_host[0] == '\0')
545 fprintf(stderr, "Level %d dump of %s on %s:%s\n",
546 spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
547 fprintf(stderr, "Label: %s\n", spcl.c_label);
556 struct timeval timep[2];
565 curfile.action = USING;
567 timep[0].tv_sec = curfile.dip->di_atime.tv_sec;
568 timep[0].tv_usec = curfile.dip->di_atime.tv_usec;
569 timep[1].tv_sec = curfile.dip->di_mtime.tv_sec;
570 timep[1].tv_usec = curfile.dip->di_mtime.tv_usec;
571 #else /* __linux__ */
572 timep[0].tv_sec = curfile.dip->di_atime;
573 timep[0].tv_usec = curfile.dip->di_atimensec / 1000;
574 timep[1].tv_sec = curfile.dip->di_mtime;
575 timep[1].tv_usec = curfile.dip->di_mtimensec / 1000;
576 #endif /* __linux__ */
577 mode = curfile.dip->di_mode;
578 flags = curfile.dip->di_flags;
579 switch (mode & IFMT) {
582 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
587 vprintf(stdout, "skipped socket %s\n", name);
593 ep = lookupname(name);
594 if (ep == NULL || ep->e_flags & EXTRACT)
595 panic("unextracted directory %s\n", name);
599 vprintf(stdout, "extract file %s\n", name);
600 return (genliteraldir(name, curfile.ino));
606 uid = curfile.dip->di_uid;
607 gid = curfile.dip->di_gid;
609 getfile(xtrlnkfile, xtrlnkskip);
612 "%s: zero length symbolic link (ignored)\n", name);
616 err = linkit(lnkbuf, name, SYMLINK);
618 (void) chown(name, uid, gid);
621 return (linkit(lnkbuf, name, SYMLINK));
625 vprintf(stdout, "extract fifo %s\n", name);
632 if (mkfifo(name, mode) < 0) {
633 fprintf(stderr, "%s: cannot create fifo: %s\n",
634 name, strerror(errno));
638 (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
639 (void) chmod(name, mode);
641 (void) fsetflags(name, flags);
643 (void) chflags(name, flags);
651 vprintf(stdout, "extract special file %s\n", name);
658 if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
659 fprintf(stderr, "%s: cannot create special file: %s\n",
660 name, strerror(errno));
664 (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
665 (void) chmod(name, mode);
667 (void) fsetflags(name, flags);
669 (void) chflags(name, flags);
676 vprintf(stdout, "extract file %s\n", name);
683 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
685 fprintf(stderr, "%s: cannot create file: %s\n",
686 name, strerror(errno));
690 (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid);
691 (void) fchmod(ofile, mode);
693 (void) fsetflags(ofile, flags);
695 (void) fchflags(ofile, flags);
697 getfile(xtrfile, xtrskip);
706 * skip over bit maps on the tape
712 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
717 * skip over a file on the tape
723 curfile.action = SKIP;
724 getfile(xtrnull, xtrnull);
728 * Extract a file from the tape.
729 * When an allocated block is found it is passed to the fill function;
730 * when an unallocated block (hole) is found, a zeroed buffer is passed
731 * to the skip function.
735 void (*fill) __P((char *, long));
736 void (*skip) __P((char *, long));
740 quad_t size = spcl.c_dinode.di_size;
741 int last_write_was_hole = 0;
742 long origsize = size;
743 static char clearedbuf[MAXBSIZE];
744 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
747 if (spcl.c_type == TS_END)
748 panic("ran off end of tape\n");
749 if (spcl.c_magic != NFS_MAGIC)
750 panic("not at beginning of a file\n");
751 if (!gettingfile && setjmp(restart) != 0)
755 for (i = 0; i < spcl.c_count; i++) {
756 if (readmapflag || spcl.c_addr[i]) {
757 readtape(&buf[curblk++][0]);
758 if (curblk == fssize / TP_BSIZE) {
759 (*fill)((char *)buf, (long)(size > TP_BSIZE ?
760 fssize : (curblk - 1) * TP_BSIZE + size));
762 last_write_was_hole = 0;
766 (*fill)((char *)buf, (long)(size > TP_BSIZE ?
768 (curblk - 1) * TP_BSIZE + size));
771 (*skip)(clearedbuf, (long)(size > TP_BSIZE ?
773 last_write_was_hole = 1;
775 if ((size -= TP_BSIZE) <= 0) {
776 for (i++; i < spcl.c_count; i++)
777 if (readmapflag || spcl.c_addr[i])
782 if (gethead(&spcl) == GOOD && size > 0) {
783 if (spcl.c_type == TS_ADDR)
786 "Missing address (header) block for %s at %ld blocks\n",
787 curfile.name, blksread);
790 (*fill)((char *)buf, (long)((curblk * TP_BSIZE) + size));
791 last_write_was_hole = 0;
793 if (last_write_was_hole) {
794 ftruncate(ofile, origsize);
801 * Write out the next block of a file.
811 if (write(ofile, buf, (int) size) == -1) {
813 "write error extracting inode %ld, name %s\nwrite: %s\n",
814 curfile.ino, curfile.name, strerror(errno));
820 * Skip over a hole in a file.
829 if (lseek(ofile, size, SEEK_CUR) == -1) {
831 "seek error extracting inode %ld, name %s\nlseek: %s\n",
832 curfile.ino, curfile.name, strerror(errno));
838 * Collect the next block of a symbolic link.
841 xtrlnkfile(buf, size)
847 if (pathlen > MAXPATHLEN) {
848 fprintf(stderr, "symbolic link name: %s->%s%s; too long %d\n",
849 curfile.name, lnkbuf, buf, pathlen);
852 (void) strcat(lnkbuf, buf);
856 * Skip over a hole in a symbolic link (should never happen).
860 xtrlnkskip(buf, size)
865 fprintf(stderr, "unallocated block in symbolic link %s\n",
871 * Collect the next block of a bit map.
879 memmove(map, buf, size);
884 * Skip over a hole in a bit map (should never happen).
888 xtrmapskip(buf, size)
893 panic("hole in map\n");
898 * Noop, when an extraction function is not needed.
911 do_cmpfiles(int fd_tape, int fd_disk, long size)
916 static char buf_tape[BUFSIZ];
917 static char buf_disk[BUFSIZ];
922 if ((n_tape = read(fd_tape, buf_tape, BUFSIZE)) < 1) {
923 close(fd_tape), close(fd_disk);
924 panic("do_cmpfiles: unexpected EOF[1]");
926 if ((n_disk = read(fd_disk, buf_disk, BUFSIZE)) < 1) {
927 close(fd_tape), close(fd_disk);
928 panic("do_cmpfiles: unexpected EOF[2]");
930 if (n_tape != n_disk) {
931 close(fd_tape), close(fd_disk);
932 panic("do_cmpfiles: sizes different!");
934 if (memcmp(buf_tape, buf_disk, n_tape) != 0) return (1);
940 /* for debugging compare problems */
941 #undef COMPARE_FAIL_KEEP_FILE
943 #ifdef COMPARE_FAIL_KEEP_FILE
944 /* return true if tapefile should be unlinked after compare */
949 cmpfiles(char *tapefile, char *diskfile, struct stat *sbuf_disk)
951 struct stat sbuf_tape;
952 int fd_tape, fd_disk;
954 if (stat(tapefile, &sbuf_tape) != 0) {
955 panic("Can't lstat tmp file %s: %s\n", tapefile,
959 if (sbuf_disk->st_size != sbuf_tape.st_size) {
961 "%s: size changed from %ld to %ld.\n",
962 diskfile, sbuf_tape.st_size, sbuf_disk->st_size);
963 #ifdef COMPARE_FAIL_KEEP_FILE
970 if ((fd_tape = open(tapefile, O_RDONLY)) < 0) {
971 panic("Can't open %s: %s\n", tapefile, strerror(errno));
973 if ((fd_disk = open(diskfile, O_RDONLY)) < 0) {
975 panic("Can't open %s: %s\n", diskfile, strerror(errno));
978 if (do_cmpfiles(fd_tape, fd_disk, sbuf_tape.st_size)) {
979 fprintf(stderr, "%s: tape and disk copies are different\n",
983 #ifdef COMPARE_FAIL_KEEP_FILE
984 /* rename the file to live in /tmp */
985 /* rename `tapefile' to /tmp/<basename of diskfile> */
987 char *p = strrchr(diskfile, '/');
988 char newname[MAXPATHLEN];
990 panic("can't find / in %s\n", diskfile);
992 sprintf(newname, "%s/debug/%s", tmpdir, p + 1);
993 if (rename(tapefile, newname)) {
994 panic("rename from %s to %s failed: %s\n",
998 fprintf(stderr, "*** %s saved to %s\n",
1003 /* don't unlink the file (it's not there anymore */
1012 #ifdef COMPARE_FAIL_KEEP_FILE
1017 static char tmpfilename[128];
1023 static char *tmpfile = NULL;
1025 struct stat sb, stemp;
1028 if ((r = lstat(name, &sb)) != 0) {
1029 fprintf(stderr, "%s: does not exist (%d, %d).\n", name, r, errno);
1034 curfile.name = name;
1035 curfile.action = USING;
1036 mode = curfile.dip->di_mode;
1038 vprintf(stdout, "comparing %s (size: %ld, mode: 0%o)\n", name,
1041 if (sb.st_mode != mode) {
1042 fprintf(stderr, "%s: mode changed from 0%o to 0%o.\n",
1043 name, mode & 07777, sb.st_mode & 07777);
1045 switch (mode & IFMT) {
1059 char lbuf[MAXPATHLEN + 1];
1062 if (!(sb.st_mode & S_IFLNK)) {
1063 fprintf(stderr, "%s: is no longer a symbolic link\n",
1069 getfile(xtrlnkfile, xtrlnkskip);
1072 "%s: zero length symbolic link (ignored)\n",
1076 if ((lsize = readlink(name, lbuf, MAXPATHLEN)) < 0) {
1077 panic("readlink of %s failed: %s", name,
1081 if (strcmp(lbuf, lnkbuf) != 0) {
1083 "%s: symbolic link changed from %s to %s.\n",
1084 name, lnkbuf, lbuf);
1092 if (!(sb.st_mode & (S_IFCHR|S_IFBLK))) {
1093 fprintf(stderr, "%s: no longer a special file\n",
1099 if (sb.st_rdev != (int)curfile.dip->di_rdev) {
1101 "%s: device changed from %d,%d to %d,%d.\n",
1103 ((int)curfile.dip->di_rdev >> 8) & 0xf,
1104 (int)curfile.dip->di_rdev & 0xf,
1105 ((int)sb.st_rdev >> 8) & 0xf,
1106 (int)sb.st_rdev & 0xf);
1112 if (tmpfile == NULL) {
1113 /* argument to mktemp() must not be in RO space: */
1114 sprintf(tmpfilename, "%s/restoreCXXXXXX", tmpdir);
1115 tmpfile = mktemp(&tmpfilename[0]);
1117 if ((stat(tmpfile, &stemp) == 0) && (unlink(tmpfile) != 0)) {
1118 panic("cannot delete tmp file %s: %s\n",
1119 tmpfile, strerror(errno));
1121 if ((ofile = creat(tmpfile, 0600)) < 0) {
1122 panic("cannot create file temp file %s: %s\n",
1123 name, strerror(errno));
1125 getfile(xtrfile, xtrskip);
1126 (void) close(ofile);
1127 #ifdef COMPARE_FAIL_KEEP_FILE
1128 if (cmpfiles(tmpfile, name, &sb))
1131 cmpfiles(tmpfile, name, &sb);
1140 * Read TP_BSIZE blocks from the input.
1141 * Handle read errors, and end of media.
1148 int cnt, seek_failed;
1150 if (blkcnt < numtrec) {
1151 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
1156 for (i = 0; i < ntrec; i++)
1157 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1160 cnt = ntrec * TP_BSIZE;
1165 i = rmtread(&tapebuf[rd], cnt);
1168 i = read(mt, &tapebuf[rd], cnt);
1170 * Check for mid-tape short read error.
1171 * If found, skip rest of buffer and start with the next.
1173 if (!pipein && numtrec < ntrec && i > 0) {
1174 dprintf(stdout, "mid-media short read error.\n");
1178 * Handle partial block read.
1180 if (pipein && i == 0 && rd > 0)
1182 else if (i > 0 && i != ntrec * TP_BSIZE) {
1191 * Short read. Process the blocks read.
1193 if (i % TP_BSIZE != 0)
1195 "partial block read: %ld should be %ld\n",
1196 i, ntrec * TP_BSIZE);
1197 numtrec = i / TP_BSIZE;
1201 * Handle read error.
1204 fprintf(stderr, "Tape read error while ");
1205 switch (curfile.action) {
1207 fprintf(stderr, "trying to set up tape\n");
1210 fprintf(stderr, "trying to resynchronize\n");
1213 fprintf(stderr, "restoring %s\n", curfile.name);
1216 fprintf(stderr, "skipping over inode %ld\n",
1220 if (!yflag && !reply("continue"))
1222 i = ntrec * TP_BSIZE;
1223 memset(tapebuf, 0, i);
1226 seek_failed = (rmtseek(i, 1) < 0);
1229 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
1233 "continuation failed: %s\n", strerror(errno));
1238 * Handle end of tape.
1241 vprintf(stdout, "End-of-tape encountered\n");
1250 if (rd % TP_BSIZE != 0)
1251 panic("partial block read: %d should be %d\n",
1252 rd, ntrec * TP_BSIZE);
1254 memmove(&tapebuf[rd], &endoftapemark, (long)TP_BSIZE);
1257 memmove(buf, &tapebuf[(blkcnt++ * TP_BSIZE)], (long)TP_BSIZE);
1267 for (i = 0; i < ntrec; i++)
1268 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1272 i = rmtread(tapebuf, ntrec * TP_BSIZE);
1275 i = read(mt, tapebuf, ntrec * TP_BSIZE);
1278 fprintf(stderr, "tape read error: %s\n", strerror(errno));
1281 if (i % TP_BSIZE != 0) {
1282 fprintf(stderr, "Tape block size (%ld) %s (%d)\n",
1283 i, "is not a multiple of dump block size", TP_BSIZE);
1286 ntrec = i / TP_BSIZE;
1288 vprintf(stdout, "Tape block size is %ld\n", ntrec);
1306 * Read the next block from the tape.
1307 * Check to see if it is one of several vintage headers.
1308 * If it is an old style header, convert it to a new style header.
1309 * If it is not any valid header, return an error.
1321 char dummy[TP_BSIZE];
1332 unsigned short odi_mode;
1349 readtape((char *)buf);
1350 if (buf->c_magic != NFS_MAGIC) {
1351 if (swabl(buf->c_magic) != NFS_MAGIC)
1354 vprintf(stdout, "Note: Doing Byte swapping\n");
1358 if (checksum((int *)buf) == FAIL)
1361 swabst((u_char *)"8l4s31l", (u_char *)buf);
1362 swabst((u_char *)"l",(u_char *) &buf->c_level);
1363 swabst((u_char *)"2l",(u_char *) &buf->c_flags);
1367 readtape((char *)(&u_ospcl.s_ospcl));
1368 memset(buf, 0, (long)TP_BSIZE);
1369 buf->c_type = u_ospcl.s_ospcl.c_type;
1370 buf->c_date = u_ospcl.s_ospcl.c_date;
1371 buf->c_ddate = u_ospcl.s_ospcl.c_ddate;
1372 buf->c_volume = u_ospcl.s_ospcl.c_volume;
1373 buf->c_tapea = u_ospcl.s_ospcl.c_tapea;
1374 buf->c_inumber = u_ospcl.s_ospcl.c_inumber;
1375 buf->c_checksum = u_ospcl.s_ospcl.c_checksum;
1376 buf->c_magic = u_ospcl.s_ospcl.c_magic;
1377 buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode;
1378 buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink;
1379 buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid;
1380 buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid;
1381 buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size;
1382 buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev;
1384 buf->c_dinode.di_atime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_atime;
1385 buf->c_dinode.di_mtime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_mtime;
1386 buf->c_dinode.di_ctime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_ctime;
1387 #else /* __linux__ */
1388 buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime;
1389 buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime;
1390 buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime;
1391 #endif /* __linux__ */
1392 buf->c_count = u_ospcl.s_ospcl.c_count;
1393 memmove(buf->c_addr, u_ospcl.s_ospcl.c_addr, (long)256);
1394 if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC ||
1395 checksum((int *)(&u_ospcl.s_ospcl)) == FAIL)
1397 buf->c_magic = NFS_MAGIC;
1400 if ((buf->c_dinode.di_size == 0 || buf->c_dinode.di_size > 0xfffffff) &&
1401 (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) {
1402 qcvt.qval = buf->c_dinode.di_size;
1403 if (qcvt.val[0] || qcvt.val[1]) {
1404 printf("Note: Doing Quad swapping\n");
1409 qcvt.qval = buf->c_dinode.di_size;
1411 qcvt.val[1] = qcvt.val[0];
1413 buf->c_dinode.di_size = qcvt.qval;
1417 switch (buf->c_type) {
1422 * Have to patch up missing information in bit map headers
1425 buf->c_dinode.di_size = buf->c_count * TP_BSIZE;
1426 if (buf->c_count > TP_NINDIR)
1429 for (i = 0; i < buf->c_count; i++)
1434 if ((buf->c_flags & DR_NEWINODEFMT) == 0)
1446 panic("gethead: unknown inode type %d\n", buf->c_type);
1450 * If we are restoring a filesystem with old format inodes,
1451 * copy the uid/gid to the new location.
1454 buf->c_dinode.di_uid = buf->c_dinode.di_ouid;
1455 buf->c_dinode.di_gid = buf->c_dinode.di_ogid;
1463 * Check that a header is where it belongs and predict the next header
1467 struct s_spcl *header;
1469 static ino_t previno = 0x7fffffff;
1470 static int prevtype;
1471 static long predict;
1474 if (header->c_type == TS_TAPE) {
1475 fprintf(stderr, "Volume header (%s inode format) ",
1476 oldinofmt ? "old" : "new");
1477 if (header->c_firstrec)
1478 fprintf(stderr, "begins with record %d",
1479 header->c_firstrec);
1480 fprintf(stderr, "\n");
1481 previno = 0x7fffffff;
1484 if (previno == 0x7fffffff)
1488 fprintf(stderr, "Dumped inodes map header");
1491 fprintf(stderr, "Used inodes map header");
1494 fprintf(stderr, "File header, ino %ld", previno);
1497 fprintf(stderr, "File continuation header, ino %ld", previno);
1500 fprintf(stderr, "End of tape header");
1503 if (predict != blksread - 1)
1504 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
1505 predict, blksread - 1);
1506 fprintf(stderr, "\n");
1509 if (header->c_type != TS_END)
1510 for (i = 0; i < header->c_count; i++)
1511 if (readmapflag || header->c_addr[i] != 0)
1515 prevtype = header->c_type;
1516 previno = header->c_inumber;
1520 * Find an inode header.
1521 * Complain if had to skip, and complain is set.
1525 struct s_spcl *header;
1527 static long skipcnt = 0;
1531 curfile.name = "<name unknown>";
1532 curfile.action = UNKNOWN;
1536 if (header->c_magic != NFS_MAGIC) {
1538 while (gethead(header) == FAIL ||
1539 header->c_date != dumpdate)
1542 switch (header->c_type) {
1546 * Skip up to the beginning of the next record
1548 for (i = 0; i < header->c_count; i++)
1549 if (header->c_addr[i])
1551 while (gethead(header) == FAIL ||
1552 header->c_date != dumpdate)
1557 curfile.dip = &header->c_dinode;
1558 curfile.ino = header->c_inumber;
1562 curfile.ino = maxino;
1566 curfile.name = "<file removal list>";
1570 curfile.name = "<file dump list>";
1574 panic("unexpected tape header\n");
1578 panic("unknown tape header type %d\n", spcl.c_type);
1582 } while (header->c_type == TS_ADDR);
1584 fprintf(stderr, "resync restore, skipped %ld blocks\n",
1595 j = sizeof(union u_spcl) / sizeof(int);
1602 /* What happens if we want to read restore tapes
1603 for a 16bit int machine??? */
1609 if (i != CHECKSUM) {
1610 fprintf(stderr, "Checksum error %o, inode %ld file %s\n", i,
1611 curfile.ino, curfile.name);
1621 #include <varargs.h>
1626 msg(const char *fmt, ...)
1639 (void)vfprintf(stderr, fmt, ap);
1642 #endif /* RRESTORE */
1646 register u_char *sp;
1652 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
1660 register u_char *sp;
1666 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
1667 c = sp[2]; sp[2] = sp[1]; sp[1] = c;
1675 register u_char *cp, *sp;
1681 case '0': case '1': case '2': case '3': case '4':
1682 case '5': case '6': case '7': case '8': case '9':
1683 n = (n * 10) + (*cp++ - '0');
1686 case 's': case 'w': case 'h':
1689 sp = swabshort(sp, n);
1695 sp = swablong(sp, n);
1698 default: /* Any other character, like 'b' counts as byte. */
1713 swabst((u_char *)"l", (u_char *)&x);