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@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
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
48 static const char rcsid[] =
49 "$Id: tape.c,v 1.28 2001/03/20 09:14:58 stelian Exp $";
54 #include <compaterr.h>
61 #include <sys/param.h>
69 #include <linux/ext2_fs.h>
70 #include <ext2fs/ext2fs.h>
71 #include <bsdcompat.h>
73 #include <ufs/ufs/dinode.h>
74 #endif /* __linux__ */
75 #include <protocols/dumprestore.h>
79 #endif /* HAVE_ZLIB */
83 #include "pathnames.h"
85 static long fssize = MAXBSIZE;
87 static int pipein = 0;
88 static int magtapein = 0; /* input is from magtape */
89 static char magtape[MAXPATHLEN];
90 static char magtapeprefix[MAXPATHLEN];
93 static char *tapebuf; /* input buffer for read */
94 static int bufsize; /* buffer size without prefix */
95 static char *tbufptr = NULL; /* active tape buffer */
97 static char *comprbuf; /* uncompress work buf */
98 static size_t comprlen; /* size including prefix */
100 static union u_spcl endoftapemark;
101 static long blksread; /* blocks read since last header */
102 static long tpblksread = 0; /* TP_BSIZE blocks read */
103 static long tapesread;
104 static sigjmp_buf restart;
105 static int gettingfile = 0; /* restart has a valid frame */
106 static char *host = NULL;
110 static char lnkbuf[MAXPATHLEN + 1];
113 int oldinofmt; /* old inode format conversion required */
114 int Bcvt; /* Swap Bytes (for CCI or sun) */
115 static int Qcvt; /* Swap quads (for sun) */
117 #define FLUSHTAPEBUF() blkcnt = ntrec + 1
119 static void accthdr __P((struct s_spcl *));
120 static int checksum __P((int *));
121 static void findinode __P((struct s_spcl *));
122 static void findtapeblksize __P((void));
123 static int gethead __P((struct s_spcl *));
124 static void readtape __P((char *));
125 static void setdumpnum __P((void));
126 static u_int swabi __P((u_int));
128 static u_long swabl __P((u_long));
130 static u_char *swab64 __P((u_char *, int));
131 static u_char *swab32 __P((u_char *, int));
132 static u_char *swab16 __P((u_char *, int));
133 static void terminateinput __P((void));
134 static void xtrfile __P((char *, size_t));
135 static void xtrlnkfile __P((char *, size_t));
136 static void xtrlnkskip __P((char *, size_t));
137 static void xtrmap __P((char *, size_t));
138 static void xtrmapskip __P((char *, size_t));
139 static void xtrskip __P((char *, size_t));
142 static void newcomprbuf __P((long));
143 static void readtape_set __P((char *));
144 static void readtape_uncompr __P((char *));
145 static void readtape_comprfile __P((char *));
146 static void readtape_comprtape __P((char *));
147 static char *decompress_tapebuf __P((struct tapebuf *, int));
148 static void msg_read_error __P((char *));
150 static int read_a_block __P((int, void *, size_t, long *));
151 #define PREFIXSIZE sizeof(struct tapebuf)
153 #define COMPARE_ONTHEFLY 1
156 static int ifile; /* input file for compare */
157 static int cmperror; /* compare error */
158 static void xtrcmpfile __P((char *, size_t));
159 static void xtrcmpskip __P((char *, size_t));
162 static int readmapflag;
165 * Set up an input source. This is called from main.c before setup() is.
168 setinput(char *source)
174 newtapebuf(NTREC > HIGHDENSITYTREC ? NTREC : HIGHDENSITYTREC);
178 if (strchr(source, ':')) {
180 source = strchr(host, ':');
182 if (rmthost(host) == 0)
186 if (strcmp(source, "-") == 0) {
188 * Since input is coming from a pipe we must establish
189 * our own connection to the terminal.
191 terminal = fopen(_PATH_TTY, "r");
192 if (terminal == NULL) {
193 warn("cannot open %s", _PATH_TTY);
194 terminal = fopen(_PATH_DEVNULL, "r");
195 if (terminal == NULL)
196 err(1, "cannot open %s", _PATH_DEVNULL);
200 setuid(getuid()); /* no longer need or want root privileges */
202 strncpy(magtapeprefix, source, MAXPATHLEN);
203 magtapeprefix[MAXPATHLEN-1] = '\0';
204 snprintf(magtape, MAXPATHLEN, "%s%03d", source, 1);
207 strncpy(magtape, source, MAXPATHLEN);
208 magtape[MAXPATHLEN - 1] = '\0';
212 newtapebuf(long size)
214 static int tapebufsize = -1;
217 bufsize = ntrec * TP_BSIZE;
218 if (size <= tapebufsize)
222 tapebuf = malloc(size * TP_BSIZE + sizeof(struct tapebuf));
224 errx(1, "Cannot allocate space for tape buffer");
230 newcomprbuf(long size)
232 if (size <= comprlen)
234 comprlen = size + sizeof(struct tapebuf);
235 if (comprbuf != NULL)
237 comprbuf = malloc(comprlen);
238 if (comprbuf == NULL)
239 errx(1, "Cannot allocate space for decompress buffer");
241 #endif /* HAVE_ZLIB */
244 * Verify that the tape drive can be accessed and
245 * that it actually is a dump tape.
252 struct mtget mt_stat;
254 Vprintf(stdout, "Verify tape and initialize maps\n");
257 mt = rmtopen(magtape, 0);
263 mt = open(magtape, O_RDONLY, 0);
265 err(1, "%s", magtape);
268 /* need to know if input is really from a tape */
271 magtapein = rmtioctl(MTNOP, 1) != -1;
274 magtapein = ioctl(mt, MTIOCGET, (char *) &mt_stat) == 0;
277 Vprintf(stdout,"Input is from %s\n", magtapein? "tape": "file/pipe");
281 if (gethead(&spcl) == FAIL) {
282 blkcnt--; /* push back this block */
286 if (gethead(&spcl) == FAIL)
287 errx(1, "Tape is not a dump tape");
288 fprintf(stderr, "Converting to new file system format.\n");
292 fprintf(stderr, "Dump tape is compressed.\n");
294 newcomprbuf(bufsize);
296 errx(1,"This restore version doesn't support decompression");
297 #endif /* HAVE_ZLIB */
300 endoftapemark.s_spcl.c_magic = cvtflag ? OFS_MAGIC : NFS_MAGIC;
301 endoftapemark.s_spcl.c_type = TS_END;
302 ip = (int *)&endoftapemark;
303 j = sizeof(union u_spcl) / sizeof(int);
308 endoftapemark.s_spcl.c_checksum = CHECKSUM - i;
310 if (vflag || command == 't' || command == 'C')
312 if (filesys[0] == '\0') {
314 strncpy(filesys, spcl.c_filesys, NAMELEN);
315 filesys[NAMELEN - 1] = '\0';
316 dirptr = strstr(filesys, " (dir");
320 dumptime = spcl.c_ddate;
321 dumpdate = spcl.c_date;
322 if (stat(".", &stbuf) < 0)
323 err(1, "cannot stat .");
324 if (stbuf.st_blksize > 0 && stbuf.st_blksize < TP_BSIZE )
326 if (stbuf.st_blksize >= TP_BSIZE && stbuf.st_blksize <= MAXBSIZE)
327 fssize = stbuf.st_blksize;
328 if (((fssize - 1) & fssize) != 0)
329 errx(1, "bad block size %ld", fssize);
330 if (spcl.c_volume != 1)
331 errx(1, "Tape is not volume 1 of the dump");
332 if (gethead(&spcl) == FAIL) {
333 Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread);
334 panic("no header after volume mark!\n");
337 if (spcl.c_type != TS_CLRI)
338 errx(1, "Cannot find file removal list");
339 maxino = (spcl.c_count * TP_BSIZE * NBBY) + 1;
340 Dprintf(stdout, "maxino = %ld\n", (long)maxino);
341 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
343 errx(1, "no memory for active inode map");
345 curfile.action = USING;
346 getfile(xtrmap, xtrmapskip);
347 if (spcl.c_type != TS_BITS)
348 errx(1, "Cannot find file dump list");
349 map = calloc((unsigned)1, (unsigned)howmany(maxino, NBBY));
350 if (map == (char *)NULL)
351 errx(1, "no memory for file dump list");
353 curfile.action = USING;
354 getfile(xtrmap, xtrmapskip);
356 * If there may be whiteout entries on the tape, pretend that the
357 * whiteout inode exists, so that the whiteout entries can be
361 SETINO(WINO, dumpmap);
365 * Prompt user to load a new dump volume.
366 * "Nextvol" is the next suggested volume to use.
367 * This suggested volume is enforced when doing full
368 * or incremental restores, but can be overridden by
369 * the user when only extracting a subset of the files.
374 long newvol = 0, savecnt = 0, wantnext = 0, i;
375 union u_spcl tmpspcl;
376 # define tmpbuf tmpspcl.s_spcl
386 panic("Changing volumes on pipe input?\n");
394 exit(1); /* pipes do not get a second chance */
395 if (command == 'R' || command == 'r' || curfile.action != SKIP) {
402 while (newvol <= 0) {
403 if (tapesread == 0) {
404 fprintf(stderr, "%s%s%s%s%s",
405 "You have not read any tapes yet.\n",
406 "Unless you know which volume your",
407 " file(s) are on you should start\n",
408 "with the last volume and work",
409 " towards the first.\n");
411 fprintf(stderr, "You have read volumes");
413 for (i = 1; i < 32; i++)
414 if (tapesread & (1 << i)) {
415 fprintf(stderr, "%s%ld", buf, (long)i);
418 fprintf(stderr, "\n");
421 fprintf(stderr, "Specify next volume #: ");
422 (void) fflush(stderr);
423 (void) fgets(buf, TP_BSIZE, terminal);
424 } while (!feof(terminal) && buf[0] == '\n');
430 "Volume numbers are positive numerics\n");
433 if (newvol == volno) {
434 tapesread |= 1 << volno;
439 snprintf(magtape, MAXPATHLEN, "%s%03ld", magtapeprefix, newvol);
440 magtape[MAXPATHLEN - 1] = '\0';
442 if (!Mflag || haderror) {
444 fprintf(stderr, "Mount tape volume %ld\n", (long)newvol);
445 fprintf(stderr, "Enter ``none'' if there are no more tapes\n");
446 fprintf(stderr, "otherwise enter tape name (default: %s) ", magtape);
447 (void) fflush(stderr);
448 (void) fgets(buf, TP_BSIZE, terminal);
451 if (!strcmp(buf, "none\n")) {
455 if (buf[0] != '\n') {
456 (void) strcpy(magtape, buf);
457 magtape[strlen(magtape) - 1] = '\0';
462 mt = rmtopen(magtape, 0);
465 mt = open(magtape, O_RDONLY, 0);
468 fprintf(stderr, "Cannot open %s\n", magtape);
477 if (gethead(&tmpbuf) == FAIL) {
478 Dprintf(stdout, "header read failed at %ld blocks\n", (long)blksread);
479 fprintf(stderr, "tape is not dump tape\n");
484 if (tmpbuf.c_volume != volno) {
485 fprintf(stderr, "Wrong volume (%d)\n", tmpbuf.c_volume);
490 if (tmpbuf.c_date != dumpdate || tmpbuf.c_ddate != dumptime) {
491 fprintf(stderr, "Wrong dump date\n\tgot: %s",
492 ctime4(&tmpbuf.c_date));
493 fprintf(stderr, "\twanted: %s", ctime(&dumpdate));
498 tapesread |= 1 << volno;
501 * If continuing from the previous volume, skip over any
502 * blocks read already at the end of the previous volume.
504 * If coming to this volume at random, skip to the beginning
505 * of the next record.
507 Dprintf(stdout, "read %ld recs, tape starts with %ld\n",
508 tpblksread, (long)tmpbuf.c_firstrec);
509 if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER)) {
511 tpblksread = tmpbuf.c_firstrec;
512 for (i = tmpbuf.c_count; i > 0; i--)
514 } else if (tmpbuf.c_firstrec > 0 &&
515 tmpbuf.c_firstrec < tpblksread - 1) {
517 * -1 since we've read the volume header
519 i = tpblksread - tmpbuf.c_firstrec - 1;
520 Dprintf(stderr, "Skipping %ld duplicate record%s.\n",
521 (long)i, i > 1 ? "s" : "");
526 if (curfile.action == USING) {
528 panic("active file into volume 1\n");
532 * Skip up to the beginning of the next record
534 if (tmpbuf.c_type == TS_TAPE && (tmpbuf.c_flags & DR_NEWHEADER))
535 for (i = tmpbuf.c_count; i > 0; i--)
537 (void) gethead(&spcl);
541 siglongjmp(restart, 1);
546 * Handle unexpected EOF.
552 if (gettingfile && curfile.action == USING) {
553 printf("Warning: %s %s\n",
554 "End-of-input encountered while extracting", curfile.name);
556 curfile.name = "<name unknown>";
557 curfile.action = UNKNOWN;
559 curfile.ino = maxino;
562 siglongjmp(restart, 1);
567 * handle multiple dumps per tape by skipping forward to the
575 if (dumpnum == 1 || volno != 1)
578 errx(1, "Cannot have multiple dumps on pipe input");
580 tcom.mt_count = dumpnum - 1;
583 rmtioctl(MTFSF, dumpnum - 1);
586 if (ioctl(mt, (int)MTIOCTOP, (char *)&tcom) < 0)
593 fprintf(stdout, "Dump date: %s", ctime4(&spcl.c_date));
594 fprintf(stdout, "Dumped from: %s",
595 (spcl.c_ddate == 0) ? "the epoch\n" : ctime4(&spcl.c_ddate));
596 if (spcl.c_host[0] == '\0')
598 fprintf(stdout, "Level %d dump of %s on %s:%s\n",
599 spcl.c_level, spcl.c_filesys, spcl.c_host, spcl.c_dev);
600 fprintf(stdout, "Label: %s\n", spcl.c_label);
604 extractfile(char *name)
608 struct timeval timep[2];
612 curfile.action = USING;
614 timep[0].tv_sec = curfile.dip->di_atime.tv_sec;
615 timep[0].tv_usec = curfile.dip->di_atime.tv_usec;
616 timep[1].tv_sec = curfile.dip->di_mtime.tv_sec;
617 timep[1].tv_usec = curfile.dip->di_mtime.tv_usec;
618 #else /* __linux__ */
619 timep[0].tv_sec = curfile.dip->di_atime;
620 timep[0].tv_usec = curfile.dip->di_atimensec / 1000;
621 timep[1].tv_sec = curfile.dip->di_mtime;
622 timep[1].tv_usec = curfile.dip->di_mtimensec / 1000;
623 #endif /* __linux__ */
624 mode = curfile.dip->di_mode;
625 flags = curfile.dip->di_flags;
626 switch (mode & IFMT) {
629 fprintf(stderr, "%s: unknown file mode 0%o\n", name, mode);
634 Vprintf(stdout, "skipped socket %s\n", name);
640 ep = lookupname(name);
641 if (ep == NULL || ep->e_flags & EXTRACT)
642 panic("unextracted directory %s\n", name);
646 Vprintf(stdout, "extract file %s\n", name);
647 return (genliteraldir(name, curfile.ino));
652 uid_t luid = curfile.dip->di_uid;
653 gid_t lgid = curfile.dip->di_gid;
657 getfile(xtrlnkfile, xtrlnkskip);
660 "%s: zero length symbolic link (ignored)\n", name);
663 if (linkit(lnkbuf, name, SYMLINK) == FAIL)
666 (void) lchown(name, luid, lgid);
672 Vprintf(stdout, "extract fifo %s\n", name);
679 if (mkfifo(name, mode) < 0) {
680 warn("%s: cannot create fifo", name);
684 (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
685 (void) chmod(name, mode);
688 (void) fsetflags(name, flags);
690 (void) chflags(name, flags);
698 Vprintf(stdout, "extract special file %s\n", name);
705 if (mknod(name, mode, (int)curfile.dip->di_rdev) < 0) {
706 warn("%s: cannot create special file", name);
710 (void) chown(name, curfile.dip->di_uid, curfile.dip->di_gid);
711 (void) chmod(name, mode);
715 warn("%s: fsetflags called on a special file", name);
716 (void) fsetflags(name, flags);
719 (void) chflags(name, flags);
726 Vprintf(stdout, "extract file %s\n", name);
733 if ((ofile = open(name, O_WRONLY | O_CREAT | O_TRUNC,
735 warn("%s: cannot create file", name);
739 (void) fchown(ofile, curfile.dip->di_uid, curfile.dip->di_gid);
740 (void) fchmod(ofile, mode);
743 (void) setflags(ofile, flags);
745 (void) fchflags(ofile, flags);
747 getfile(xtrfile, xtrskip);
756 * skip over bit maps on the tape
762 while (spcl.c_type == TS_BITS || spcl.c_type == TS_CLRI)
767 * skip over a file on the tape
773 curfile.action = SKIP;
774 getfile(xtrnull, xtrnull);
778 * Extract a file from the tape.
779 * When an allocated block is found it is passed to the fill function;
780 * when an unallocated block (hole) is found, a zeroed buffer is passed
781 * to the skip function.
784 getfile(void (*fill) __P((char *, size_t)), void (*skip) __P((char *, size_t)))
787 volatile int curblk = 0;
788 volatile quad_t size = spcl.c_dinode.di_size;
789 volatile int last_write_was_hole = 0;
790 quad_t origsize = size;
791 static char clearedbuf[MAXBSIZE];
792 char buf[MAXBSIZE / TP_BSIZE][TP_BSIZE];
795 if (spcl.c_type == TS_END)
796 panic("ran off end of tape\n");
797 if (spcl.c_magic != NFS_MAGIC)
798 panic("not at beginning of a file\n");
799 if (!gettingfile && setjmp(restart) != 0)
803 for (i = 0; i < spcl.c_count; i++) {
804 if (readmapflag || spcl.c_addr[i]) {
805 readtape(&buf[curblk++][0]);
806 if (curblk == fssize / TP_BSIZE) {
807 (*fill)((char *)buf, (size_t)(size > TP_BSIZE ?
808 fssize : (curblk - 1) * TP_BSIZE + size));
810 last_write_was_hole = 0;
814 (*fill)((char *)buf, (size_t)(size > TP_BSIZE ?
816 (curblk - 1) * TP_BSIZE + size));
819 (*skip)(clearedbuf, (long)(size > TP_BSIZE ?
821 last_write_was_hole = 1;
823 if ((size -= TP_BSIZE) <= 0) {
824 for (i++; i < spcl.c_count; i++)
825 if (readmapflag || spcl.c_addr[i])
830 if (gethead(&spcl) == GOOD && size > 0) {
831 if (spcl.c_type == TS_ADDR)
834 "Missing address (header) block for %s at %ld blocks\n",
835 curfile.name, (long)blksread);
838 (*fill)((char *)buf, (size_t)(curblk * TP_BSIZE) + size);
839 last_write_was_hole = 0;
841 if (last_write_was_hole) {
842 ftruncate(ofile, origsize);
849 * Write out the next block of a file.
852 xtrfile(char *buf, size_t size)
857 if (write(ofile, buf, (int) size) == -1)
858 err(1, "write error extracting inode %lu, name %s\nwrite",
859 (unsigned long)curfile.ino, curfile.name);
863 * Skip over a hole in a file.
867 xtrskip(char *buf, size_t size)
870 if (lseek(ofile, (off_t)size, SEEK_CUR) == -1)
871 err(1, "seek error extracting inode %lu, name %s\nlseek",
872 (unsigned long)curfile.ino, curfile.name);
876 * Collect the next block of a symbolic link.
879 xtrlnkfile(char *buf, size_t size)
883 if (pathlen > MAXPATHLEN)
884 errx(1, "symbolic link name: %s->%s%s; too long %d",
885 curfile.name, lnkbuf, buf, pathlen);
886 (void) strcat(lnkbuf, buf);
890 * Skip over a hole in a symbolic link (should never happen).
894 xtrlnkskip(char *buf, size_t size)
897 errx(1, "unallocated block in symbolic link %s", curfile.name);
901 * Collect the next block of a bit map.
904 xtrmap(char *buf, size_t size)
907 memmove(map, buf, size);
912 * Skip over a hole in a bit map (should never happen).
916 xtrmapskip(char *buf, size_t size)
919 panic("hole in map\n");
924 * Noop, when an extraction function is not needed.
928 xtrnull(char *buf, size_t size)
936 * Compare the next block of a file.
939 xtrcmpfile(char *buf, size_t size)
941 static char cmpbuf[MAXBSIZE];
946 if (read(ifile, cmpbuf, size) != size) {
947 fprintf(stderr, "%s: size has changed.\n",
953 if (memcmp(buf, cmpbuf, size) != 0) {
954 fprintf(stderr, "%s: tape and disk copies are different\n",
962 * Skip over a hole in a file.
965 xtrcmpskip(char *buf, size_t size)
967 static char cmpbuf[MAXBSIZE];
973 if (read(ifile, cmpbuf, size) != size) {
974 fprintf(stderr, "%s: size has changed.\n",
980 for (i = 0; i < size; ++i)
981 if (cmpbuf[i] != '\0') {
982 fprintf(stderr, "%s: tape and disk copies are different\n",
988 #endif /* COMPARE_ONTHEFLY */
990 #if !COMPARE_ONTHEFLY
992 do_cmpfiles(int fd_tape, int fd_disk, long size)
994 static char buf_tape[BUFSIZ];
995 static char buf_disk[BUFSIZ];
1000 if ((n_tape = read(fd_tape, buf_tape, sizeof(buf_tape))) < 1) {
1001 close(fd_tape), close(fd_disk);
1002 panic("do_cmpfiles: unexpected EOF[1]");
1004 if ((n_disk = read(fd_disk, buf_disk, sizeof(buf_tape))) < 1) {
1005 close(fd_tape), close(fd_disk);
1006 panic("do_cmpfiles: unexpected EOF[2]");
1008 if (n_tape != n_disk) {
1009 close(fd_tape), close(fd_disk);
1010 panic("do_cmpfiles: sizes different!");
1012 if (memcmp(buf_tape, buf_disk, (size_t)n_tape) != 0) return (1);
1018 /* for debugging compare problems */
1019 #undef COMPARE_FAIL_KEEP_FILE
1022 #ifdef COMPARE_FAIL_KEEP_FILE
1023 /* return true if tapefile should be unlinked after compare */
1028 cmpfiles(char *tapefile, char *diskfile, struct stat *sbuf_disk)
1030 struct stat sbuf_tape;
1031 int fd_tape, fd_disk;
1033 if (stat(tapefile, &sbuf_tape) != 0) {
1034 panic("Can't lstat tmp file %s: %s\n", tapefile,
1039 if (sbuf_disk->st_size != sbuf_tape.st_size) {
1041 "%s: size changed from %ld to %ld.\n",
1042 diskfile, (long)sbuf_tape.st_size, (long)sbuf_disk->st_size);
1044 #ifdef COMPARE_FAIL_KEEP_FILE
1051 if ((fd_tape = open(tapefile, O_RDONLY)) < 0) {
1052 panic("Can't open %s: %s\n", tapefile, strerror(errno));
1055 if ((fd_disk = open(diskfile, O_RDONLY)) < 0) {
1057 panic("Can't open %s: %s\n", diskfile, strerror(errno));
1061 if (do_cmpfiles(fd_tape, fd_disk, sbuf_tape.st_size)) {
1062 fprintf(stderr, "%s: tape and disk copies are different\n",
1067 #ifdef COMPARE_FAIL_KEEP_FILE
1068 /* rename the file to live in /tmp */
1069 /* rename `tapefile' to /tmp/<basename of diskfile> */
1071 char *p = strrchr(diskfile, '/');
1072 char newname[MAXPATHLEN];
1074 panic("can't find / in %s\n", diskfile);
1076 snprintf(newname, sizeof(newname), "%s/debug/%s", tmpdir, p + 1);
1077 if (rename(tapefile, newname)) {
1078 panic("rename from %s to %s failed: %s\n",
1082 fprintf(stderr, "*** %s saved to %s\n",
1087 /* don't unlink the file (it's not there anymore */
1096 #ifdef COMPARE_FAIL_KEEP_FILE
1100 #endif /* !COMPARE_ONTHEFLY */
1102 #if !COMPARE_ONTHEFLY
1103 static char tmpfilename[MAXPATHLEN];
1107 comparefile(char *name)
1112 #if !COMPARE_ONTHEFLY
1113 static char *tmpfile = NULL;
1117 if ((r = lstat(name, &sb)) != 0) {
1118 warn("%s: does not exist (%d)", name, r);
1124 curfile.name = name;
1125 curfile.action = USING;
1126 mode = curfile.dip->di_mode;
1128 Vprintf(stdout, "comparing %s (size: %ld, mode: 0%o)\n", name,
1129 (long)sb.st_size, mode);
1131 if (sb.st_mode != mode) {
1132 fprintf(stderr, "%s: mode changed from 0%o to 0%o.\n",
1133 name, mode & 07777, sb.st_mode & 07777);
1136 switch (mode & IFMT) {
1150 char lbuf[MAXPATHLEN + 1];
1153 if (!(sb.st_mode & S_IFLNK)) {
1154 fprintf(stderr, "%s: is no longer a symbolic link\n",
1161 getfile(xtrlnkfile, xtrlnkskip);
1164 "%s: zero length symbolic link (ignored)\n",
1169 if ((lsize = readlink(name, lbuf, MAXPATHLEN)) < 0) {
1170 panic("readlink of %s failed: %s", name,
1175 if (strcmp(lbuf, lnkbuf) != 0) {
1177 "%s: symbolic link changed from %s to %s.\n",
1178 name, lnkbuf, lbuf);
1187 if (!(sb.st_mode & (S_IFCHR|S_IFBLK))) {
1188 fprintf(stderr, "%s: no longer a special file\n",
1195 if (sb.st_rdev != (int)curfile.dip->di_rdev) {
1197 "%s: device changed from %d,%d to %d,%d.\n",
1199 ((int)curfile.dip->di_rdev >> 8) & 0xff,
1200 (int)curfile.dip->di_rdev & 0xff,
1201 ((int)sb.st_rdev >> 8) & 0xff,
1202 (int)sb.st_rdev & 0xff);
1209 #if COMPARE_ONTHEFLY
1210 if ((ifile = open(name, O_RDONLY)) < 0) {
1211 panic("Can't open %s: %s\n", name, strerror(errno));
1217 getfile(xtrcmpfile, xtrcmpskip);
1220 if (read(ifile, &c, 1) != 0) {
1221 fprintf(stderr, "%s: size has changed.\n",
1231 if (tmpfile == NULL) {
1232 /* argument to mktemp() must not be in RO space: */
1233 snprintf(tmpfilename, sizeof(tmpfilename), "%s/restoreCXXXXXX", tmpdir);
1234 tmpfile = mktemp(&tmpfilename[0]);
1236 if ((stat(tmpfile, &stemp) == 0) && (unlink(tmpfile) != 0)) {
1237 panic("cannot delete tmp file %s: %s\n",
1238 tmpfile, strerror(errno));
1240 if ((ofile = creat(tmpfile, 0600)) < 0) {
1241 panic("cannot create file temp file %s: %s\n",
1242 name, strerror(errno));
1244 getfile(xtrfile, xtrskip);
1245 (void) close(ofile);
1246 #ifdef COMPARE_FAIL_KEEP_FILE
1247 if (cmpfiles(tmpfile, name, &sb))
1250 cmpfiles(tmpfile, name, &sb);
1253 #endif /* COMPARE_ONTHEFLY */
1260 static void (*readtape_func)(char *) = readtape_set;
1263 * Read TP_BSIZE blocks from the input.
1264 * Handle read errors, and end of media.
1265 * Decompress compressed blocks.
1270 (*readtape_func)(buf); /* call the actual processing routine */
1274 * Set function pointer for readtape() routine. zflag and magtapein must
1275 * be correctly set before the first call to readtape().
1278 readtape_set(char *buf)
1281 readtape_func = readtape_uncompr;
1284 readtape_func = readtape_comprtape;
1286 readtape_func = readtape_comprfile;
1291 #endif /* HAVE_ZLIB */
1294 * This is the original readtape(), it's used for reading uncompressed input.
1295 * Read TP_BSIZE blocks from the input.
1296 * Handle read errors, and end of media.
1300 readtape_uncompr(char *buf)
1305 ssize_t rd, newvol, i;
1306 int cnt, seek_failed;
1308 if (blkcnt < numtrec) {
1309 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1315 for (i = 0; i < ntrec; i++)
1316 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1319 cnt = ntrec * TP_BSIZE;
1326 i = rmtread(&tapebuf[rd], cnt);
1329 i = read(mt, &tapebuf[rd], cnt);
1332 * Check for mid-tape short read error.
1333 * If found, skip rest of buffer and start with the next.
1335 if (!pipein && numtrec < ntrec && i > 0) {
1336 Dprintf(stdout, "mid-media short read error.\n");
1340 * Handle partial block read.
1342 if (pipein && i == 0 && rd > 0)
1344 else if (i > 0 && i != ntrec * TP_BSIZE) {
1353 * Short read. Process the blocks read.
1355 if (i % TP_BSIZE != 0)
1357 "partial block read: %ld should be %ld\n",
1358 (long)i, ntrec * TP_BSIZE);
1359 numtrec = i / TP_BSIZE;
1363 * Handle read error.
1366 fprintf(stderr, "Tape read error while ");
1367 switch (curfile.action) {
1369 fprintf(stderr, "trying to set up tape\n");
1372 fprintf(stderr, "trying to resynchronize\n");
1375 fprintf(stderr, "restoring %s\n", curfile.name);
1378 fprintf(stderr, "skipping over inode %lu\n",
1379 (unsigned long)curfile.ino);
1382 if (!yflag && !reply("continue"))
1384 i = ntrec * TP_BSIZE;
1385 memset(tapebuf, 0, (size_t)i);
1388 seek_failed = (rmtseek(i, 1) < 0);
1391 seek_failed = (lseek(mt, i, SEEK_CUR) == (off_t)-1);
1394 warn("continuation failed");
1395 if (!yflag && !reply("assume end-of-tape and continue"))
1401 * Handle end of tape.
1404 Vprintf(stdout, "End-of-tape encountered\n");
1413 if (rd % TP_BSIZE != 0)
1414 panic("partial block read: %d should be %d\n",
1415 rd, ntrec * TP_BSIZE);
1417 memmove(&tapebuf[rd], &endoftapemark, TP_BSIZE);
1420 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1428 * Read a compressed format block from a file or pipe and uncompress it.
1429 * Attempt to handle read errors, and end of file.
1432 readtape_comprfile(char *buf)
1434 long rl, size, i, ret;
1436 struct tapebuf *tpb;
1438 if (blkcnt < numtrec) {
1439 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1444 /* need to read the next block */
1446 for (i = 0; i < ntrec; i++)
1447 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1449 tpb = (struct tapebuf *) tapebuf;
1451 /* read the block prefix */
1452 ret = read_a_block(mt, tapebuf, PREFIXSIZE, &rl);
1458 if (size > bufsize) {
1459 /* something's wrong */
1460 Vprintf(stdout, "Prefix size error, max size %d, got %ld\n",
1463 tpb->length = bufsize;
1465 ret = read_a_block(mt, tpb->buf, size, &rl);
1469 tbufptr = decompress_tapebuf(tpb, rl + PREFIXSIZE);
1470 if (tbufptr == NULL) {
1471 msg_read_error("File decompression error while");
1472 if (!yflag && !reply("continue"))
1474 memset(tapebuf, 0, bufsize);
1479 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1485 /* Errors while reading from a file or pipe are catastrophic. Since
1486 * there are no block boundaries, it's impossible to bypass the
1487 * block in error and find the start of the next block.
1490 /* It's possible to have multiple input files using -M
1491 * and -f file1,file2...
1493 Vprintf(stdout, "End-of-File encountered\n");
1503 msg_read_error("Read error while");
1504 /* if (!yflag && !reply("continue")) */
1509 * Read compressed data from a tape and uncompress it.
1510 * Handle read errors, and end of media.
1511 * Since a tape consists of separate physical blocks, we try
1512 * to recover from errors by repositioning the tape to the next
1516 readtape_comprtape(char *buf)
1520 struct tapebuf *tpb;
1523 if (blkcnt < numtrec) {
1524 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1529 /* need to read the next block */
1531 for (i = 0; i < ntrec; i++)
1532 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1534 tpb = (struct tapebuf *) tapebuf;
1536 /* read the block */
1537 size = bufsize + PREFIXSIZE;
1538 ret = read_a_block(mt, tapebuf, size, &rl);
1542 tbufptr = decompress_tapebuf(tpb, rl);
1543 if (tbufptr == NULL) {
1544 msg_read_error("Tape decompression error while");
1545 if (!yflag && !reply("continue"))
1547 memset(tapebuf, 0, PREFIXSIZE + bufsize);
1553 /* Handle errors: EOT switches to the next volume, other errors
1554 * attempt to position the tape to the next block.
1557 Vprintf(stdout, "End-of-tape encountered\n");
1566 msg_read_error("Tape read error while");
1567 if (!yflag && !reply("continue"))
1569 memset(tapebuf, 0, PREFIXSIZE + bufsize);
1574 rl = rmtioctl(MTFSR, 1);
1580 rl = ioctl(mt, MTIOCTOP, &tcom);
1584 warn("continuation failed");
1585 if (!yflag && !reply("assume end-of-tape and continue"))
1587 ret = 0; /* end of tape */
1593 memmove(buf, &tbufptr[(blkcnt++ * TP_BSIZE)], TP_BSIZE);
1599 * Decompress a struct tapebuf into a buffer. readsize is the size read
1600 * from the tape/file and is used for error messages. Returns a pointer
1601 * to the location of the uncompressed buffer or NULL on errors.
1602 * Adjust numtrec and complain for a short block.
1605 decompress_tapebuf(struct tapebuf *tpbin, int readsize)
1607 /* If zflag is on, all blocks have a struct tapebuf prefix */
1608 /* zflag gets set in setup() from the dump header */
1609 int cresult, blocklen;
1610 unsigned long worklen;
1611 char *output = NULL,*reason = NULL, *lengtherr = NULL;
1613 /* build a length error message */
1614 blocklen = tpbin->length;
1615 if (readsize < blocklen + PREFIXSIZE)
1616 lengtherr = "short";
1618 if (readsize > blocklen + PREFIXSIZE)
1623 if (tpbin->compressed) {
1624 /* uncompress whatever we read, if it fails, complain later */
1625 cresult = uncompress(comprbuf, &worklen, tpbin->buf, blocklen);
1629 output = tpbin->buf;
1634 if (worklen != ntrec * TP_BSIZE) {
1635 /* short block, shouldn't happen, but... */
1636 reason = "length mismatch";
1637 if (worklen % TP_BSIZE == 0)
1638 numtrec = worklen / TP_BSIZE;
1642 reason = "not enough memory";
1645 reason = "buffer too small";
1648 reason = "data error";
1655 fprintf(stderr, "%s compressed block: %d expected: %d\n",
1656 lengtherr, readsize, tpbin->length + PREFIXSIZE);
1657 fprintf(stderr, "decompression error, block %ld: %s\n",
1658 tpblksread+1, reason);
1659 if (cresult != Z_OK) output = NULL;
1665 * Print an error message for a read error.
1666 * This was exteracted from the original readtape().
1669 msg_read_error(char *m)
1671 switch (curfile.action) {
1673 fprintf(stderr, "%s trying to set up tape\n", m);
1676 fprintf(stderr, "%s trying to resynchronize\n", m);
1679 fprintf(stderr, "%s restoring %s\n", m, curfile.name);
1682 fprintf(stderr, "%s skipping over inode %lu\n", m,
1683 (unsigned long)curfile.ino);
1687 #endif /* HAVE_ZLIB */
1690 * Read the first block and set the blocksize from its length. Test
1691 * if the block looks like a compressed dump tape. setup() will make
1692 * the final determination by checking the compressed flag if gethead()
1693 * finds a valid header. The test here is necessary to offset the buffer
1694 * by the size of the compressed prefix. zflag is set here so that
1695 * readtape_set can set the correct function pointer for readtape().
1696 * Note that the first block of each tape/file will not be compressed.
1699 findtapeblksize(void)
1703 struct tapebuf *tpb = (struct tapebuf *) tapebuf;
1704 struct s_spcl *spclpt = (struct s_spcl *) tpb->buf;
1706 for (i = 0; i < ntrec; i++)
1707 ((struct s_spcl *)&tapebuf[i * TP_BSIZE])->c_magic = 0;
1711 * For a pipe or file, read in the first record. For a tape, read
1714 len = magtapein ? bufsize + PREFIXSIZE: TP_BSIZE;
1716 if (read_a_block(mt, tapebuf, len, &i) <= 0)
1717 errx(1, "Tape read error on first record");
1720 * If the input is from a file or a pipe, we read TP_BSIZE
1721 * bytes looking for a compressed dump header, we then
1722 * need to read in the rest of the record, as determined by
1723 * tpb->length or bufsize. The first block of the dump is
1724 * guaranteed to not be compressed so we look at the header.
1727 if (tpb->length % TP_BSIZE == 0
1728 && tpb->length <= bufsize
1729 && tpb->compressed == 0
1730 && spclpt->c_type == TS_TAPE
1731 && spclpt->c_flags & DR_COMPRESSED) {
1732 /* Looks like it's a compressed dump block prefix, */
1733 /* read in the rest of the block based on tpb->length. */
1734 len = tpb->length - TP_BSIZE + PREFIXSIZE;
1735 if (read_a_block(mt, tapebuf+TP_BSIZE, len, &i) <= 0
1737 errx(1,"Error reading dump file header");
1739 numtrec = ntrec = tpb->length / TP_BSIZE;
1743 /* read in the rest of the block based on bufsize */
1744 len = bufsize - TP_BSIZE;
1745 if (read_a_block(mt, tapebuf+TP_BSIZE, len, &i) <= 0
1747 errx(1,"Error reading dump file header");
1751 Vprintf(stdout, "Input block size is %ld\n", ntrec);
1756 * If the input is a tape, we tried to read PREFIXSIZE +
1757 * ntrec * TP_BSIZE bytes. If it's not a compressed dump tape
1758 * or the value of ntrec is too large, we have read less than
1759 * what we asked for; adjust the value of ntrec and test for
1760 * a compressed dump tape prefix.
1763 if (i % TP_BSIZE != 0) {
1764 if (i % TP_BSIZE == PREFIXSIZE
1765 && tpb->compressed == 0
1766 && spclpt->c_type == TS_TAPE
1767 && spclpt->c_flags & DR_COMPRESSED) {
1771 if (tpb->length > bufsize)
1772 errx(1, "Tape blocksize is too large, use "
1773 "\'-b %d\' ", tpb->length / TP_BSIZE);
1776 errx(1, "Tape block size (%ld) is not a multiple of dump block size (%d)",
1779 ntrec = i / TP_BSIZE;
1781 Vprintf(stdout, "Tape block size is %ld\n", ntrec);
1785 * Read a block of data handling all of the messy details.
1787 static int read_a_block(int fd, void *buf, size_t len, long *lengthread)
1795 i = rmtread(buf, size);
1798 i = read(fd, buf, size);
1801 break; /* EOD or error */
1804 break; /* block at a time for mt */
1807 *lengthread = len - size;
1826 * Read the next block from the tape.
1827 * Check to see if it is one of several vintage headers.
1828 * If it is an old style header, convert it to a new style header.
1829 * If it is not any valid header, return an error.
1832 gethead(struct s_spcl *buf)
1840 char dummy[TP_BSIZE];
1847 u_int16_t c_inumber;
1852 u_int16_t odi_nlink;
1868 readtape((char *)buf);
1869 if (buf->c_magic != NFS_MAGIC) {
1870 if (swabi(buf->c_magic) != NFS_MAGIC)
1873 Vprintf(stdout, "Note: Doing Byte swapping\n");
1877 if (checksum((int *)buf) == FAIL)
1880 swabst((u_char *)"8i4s31i528bi192b2i", (u_char *)buf);
1883 readtape((char *)(&u_ospcl.s_ospcl));
1884 memset((char *)buf, 0, (long)TP_BSIZE);
1885 buf->c_type = u_ospcl.s_ospcl.c_type;
1886 buf->c_date = u_ospcl.s_ospcl.c_date;
1887 buf->c_ddate = u_ospcl.s_ospcl.c_ddate;
1888 buf->c_volume = u_ospcl.s_ospcl.c_volume;
1889 buf->c_tapea = u_ospcl.s_ospcl.c_tapea;
1890 buf->c_inumber = u_ospcl.s_ospcl.c_inumber;
1891 buf->c_checksum = u_ospcl.s_ospcl.c_checksum;
1892 buf->c_magic = u_ospcl.s_ospcl.c_magic;
1893 buf->c_dinode.di_mode = u_ospcl.s_ospcl.c_dinode.odi_mode;
1894 buf->c_dinode.di_nlink = u_ospcl.s_ospcl.c_dinode.odi_nlink;
1895 buf->c_dinode.di_uid = u_ospcl.s_ospcl.c_dinode.odi_uid;
1896 buf->c_dinode.di_gid = u_ospcl.s_ospcl.c_dinode.odi_gid;
1897 buf->c_dinode.di_size = u_ospcl.s_ospcl.c_dinode.odi_size;
1898 buf->c_dinode.di_rdev = u_ospcl.s_ospcl.c_dinode.odi_rdev;
1900 buf->c_dinode.di_atime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_atime;
1901 buf->c_dinode.di_mtime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_mtime;
1902 buf->c_dinode.di_ctime.tv_sec = u_ospcl.s_ospcl.c_dinode.odi_ctime;
1903 #else /* __linux__ */
1904 buf->c_dinode.di_atime = u_ospcl.s_ospcl.c_dinode.odi_atime;
1905 buf->c_dinode.di_mtime = u_ospcl.s_ospcl.c_dinode.odi_mtime;
1906 buf->c_dinode.di_ctime = u_ospcl.s_ospcl.c_dinode.odi_ctime;
1907 #endif /* __linux__ */
1908 buf->c_count = u_ospcl.s_ospcl.c_count;
1909 memmove(buf->c_addr, u_ospcl.s_ospcl.c_addr, (long)256);
1910 if (u_ospcl.s_ospcl.c_magic != OFS_MAGIC ||
1911 checksum((int *)(&u_ospcl.s_ospcl)) == FAIL)
1913 buf->c_magic = NFS_MAGIC;
1916 if ((buf->c_dinode.di_size == 0 || buf->c_dinode.di_size > 0xfffffff) &&
1917 (buf->c_dinode.di_mode & IFMT) == IFDIR && Qcvt == 0) {
1918 qcvt.qval = buf->c_dinode.di_size;
1919 if (qcvt.val[0] || qcvt.val[1]) {
1920 printf("Note: Doing Quad swapping\n");
1925 qcvt.qval = buf->c_dinode.di_size;
1927 qcvt.val[1] = qcvt.val[0];
1929 buf->c_dinode.di_size = qcvt.qval;
1933 switch (buf->c_type) {
1938 * Have to patch up missing information in bit map headers
1941 buf->c_dinode.di_size = buf->c_count * TP_BSIZE;
1942 if (buf->c_count > TP_NINDIR)
1945 for (i = 0; i < buf->c_count; i++)
1950 if ((buf->c_flags & DR_NEWINODEFMT) == 0)
1962 panic("gethead: unknown inode type %d\n", buf->c_type);
1966 * If we are restoring a filesystem with old format inodes,
1967 * copy the uid/gid to the new location.
1970 buf->c_dinode.di_uid = buf->c_dinode.di_ouid;
1971 buf->c_dinode.di_gid = buf->c_dinode.di_ogid;
1979 * Check that a header is where it belongs and predict the next header
1982 accthdr(struct s_spcl *header)
1984 static ino_t previno = 0x7fffffff;
1985 static int prevtype;
1986 static long predict;
1989 if (header->c_type == TS_TAPE) {
1990 fprintf(stderr, "Volume header (%s inode format) ",
1991 oldinofmt ? "old" : "new");
1992 if (header->c_firstrec)
1993 fprintf(stderr, "begins with record %d",
1994 header->c_firstrec);
1995 fprintf(stderr, "\n");
1996 previno = 0x7fffffff;
1999 if (previno == 0x7fffffff)
2003 fprintf(stderr, "Dumped inodes map header");
2006 fprintf(stderr, "Used inodes map header");
2009 fprintf(stderr, "File header, ino %lu", (unsigned long)previno);
2012 fprintf(stderr, "File continuation header, ino %ld", (long)previno);
2015 fprintf(stderr, "End of tape header");
2018 if (predict != blksread - 1)
2019 fprintf(stderr, "; predicted %ld blocks, got %ld blocks",
2020 predict, blksread - 1);
2021 fprintf(stderr, "\n");
2024 if (header->c_type != TS_END)
2025 for (i = 0; i < header->c_count; i++)
2026 if (readmapflag || header->c_addr[i] != 0)
2030 prevtype = header->c_type;
2031 previno = header->c_inumber;
2035 * Find an inode header.
2036 * Complain if had to skip, and complain is set.
2039 findinode(struct s_spcl *header)
2041 static long skipcnt = 0;
2045 curfile.name = "<name unknown>";
2046 curfile.action = UNKNOWN;
2050 if (header->c_magic != NFS_MAGIC) {
2052 while (gethead(header) == FAIL ||
2053 header->c_date != dumpdate)
2056 switch (header->c_type) {
2060 * Skip up to the beginning of the next record
2062 for (i = 0; i < header->c_count; i++)
2063 if (header->c_addr[i])
2065 while (gethead(header) == FAIL ||
2066 header->c_date != dumpdate)
2071 curfile.dip = &header->c_dinode;
2072 curfile.ino = header->c_inumber;
2076 curfile.ino = maxino;
2080 curfile.name = "<file removal list>";
2084 curfile.name = "<file dump list>";
2088 panic("unexpected tape header\n");
2092 panic("unknown tape header type %d\n", spcl.c_type);
2096 } while (header->c_type == TS_ADDR);
2098 fprintf(stderr, "resync restore, skipped %ld blocks\n",
2108 j = sizeof(union u_spcl) / sizeof(int);
2115 /* What happens if we want to read restore tapes
2116 for a 16bit int machine??? */
2122 if (i != CHECKSUM) {
2123 fprintf(stderr, "Checksum error %o, inode %lu file %s\n", i,
2124 (unsigned long)curfile.ino, curfile.name);
2134 #include <varargs.h>
2139 msg(const char *fmt, ...)
2152 (void)vfprintf(stderr, fmt, ap);
2155 #endif /* RRESTORE */
2158 swab16(u_char *sp, int n)
2163 c = sp[0]; sp[0] = sp[1]; sp[1] = c;
2170 swab32(u_char *sp, int n)
2175 c = sp[0]; sp[0] = sp[3]; sp[3] = c;
2176 c = sp[1]; sp[1] = sp[2]; sp[2] = c;
2183 swab64(u_char *sp, int n)
2188 c = sp[0]; sp[0] = sp[7]; sp[7] = c;
2189 c = sp[1]; sp[1] = sp[6]; sp[6] = c;
2190 c = sp[2]; sp[2] = sp[5]; sp[5] = c;
2191 c = sp[3]; sp[3] = sp[4]; sp[4] = c;
2198 swabst(u_char *cp, u_char *sp)
2204 case '0': case '1': case '2': case '3': case '4':
2205 case '5': case '6': case '7': case '8': case '9':
2206 n = (n * 10) + (*cp++ - '0');
2209 case 's': case 'w': case 'h':
2227 default: /* Any other character, like 'b' counts as byte. */
2241 swabst((u_char *)"i", (u_char *)&x);
2249 swabst((u_char *)"l", (u_char *)&x);