]>
git.wh0rd.org - dump.git/blob - dump/main.c
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) 1980, 1991, 1993, 1994
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * $Id: main.c,v 1.5 1999/10/11 13:31:11 stelian Exp $
44 #include <sys/param.h>
47 #include <linux/ext2_fs.h>
49 #include <bsdcompat.h>
52 #include <sys/vnode.h>
54 #include <ufs/inode.h>
57 #include <ufs/ufs/dinode.h>
58 #include <ufs/ffs/fs.h>
62 #include <protocols/dumprestore.h>
65 #include <compaterr.h>
75 #include <ext2fs/ext2fs.h>
79 #include "pathnames.h"
82 #define SBOFF (SBLOCK * DEV_BSIZE)
85 int notify
= 0; /* notify operator flag */
86 int blockswritten
= 0; /* number of blocks written on current tape */
87 int tapeno
= 0; /* current tape number */
88 int density
= 0; /* density in bytes/0.1" " <- this is for hilit19 */
89 int ntrec
= NTREC
; /* # tape blocks in each tape record */
90 int cartridge
= 0; /* Assume non-cartridge tape */
91 int dokerberos
= 0; /* Use Kerberos authentication */
92 long dev_bsize
= 1; /* recalculated below */
93 long blocksperfile
; /* output blocks per file */
94 char *host
= NULL
; /* remote host (if any) */
100 int maxbsize
= 64*1024; /* XXX MAXBSIZE from sys/param.h */
101 static long numarg
__P((const char *, long, long));
102 static void obsolete
__P((int *, char **[]));
103 static void usage
__P((void));
106 main(int argc
, char *argv
[])
110 register struct dinode
*dp
;
111 register struct fstab
*dt
;
114 int i
, anydirskipped
, bflag
= 0, Tflag
= 0, honorlevel
= 1;
118 char directory
[NAME_MAX
];
119 char pathname
[NAME_MAX
];
122 char labelstr
[LBLSIZE
];
126 (void)time4(&spcl
.c_date
);
128 (void)time((time_t *)&spcl
.c_date
);
132 __progname
= argv
[0];
134 initialize_ext2_error_table();
137 tsize
= 0; /* Default later, based on 'c' option for cart tapes */
138 if ((tape
= getenv("TAPE")) == NULL
)
139 tape
= _PATH_DEFTAPE
;
140 dumpdates
= _PATH_DUMPDATES
;
142 strcpy(labelstr
, "none"); /* XXX safe strcpy. */
143 if (TP_BSIZE
/ DEV_BSIZE
== 0 || TP_BSIZE
% DEV_BSIZE
!= 0)
144 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
150 obsolete(&argc
, &argv
);
152 #define optstring "0123456789aB:b:cd:f:h:kL:ns:T:uWw"
154 #define optstring "0123456789aB:b:cd:f:h:L:ns:T:uWw"
156 while ((ch
= getopt(argc
, argv
, optstring
)) != -1)
160 case '0': case '1': case '2': case '3': case '4':
161 case '5': case '6': case '7': case '8': case '9':
165 case 'a': /* `auto-size', Write to EOM. */
169 case 'B': /* blocks per output file */
170 blocksperfile
= numarg("number of blocks per file",
174 case 'b': /* blocks per tape write */
175 ntrec
= numarg("number of blocks per write",
177 if (ntrec
> maxbsize
/1024) {
178 msg("Please choose a blocksize <= %dKB\n",
185 case 'c': /* Tape is cart. not 9-track */
189 case 'd': /* density, in bits per inch */
190 density
= numarg("density", 10L, 327670L) / 10;
191 if (density
>= 625 && !bflag
)
192 ntrec
= HIGHDENSITYTREC
;
195 case 'f': /* output file */
200 honorlevel
= numarg("honor level", 0L, 10L);
211 * Note that although there are LBLSIZE characters,
212 * the last must be '\0', so the limit on strlen()
213 * is really LBLSIZE-1.
215 strncpy(labelstr
, optarg
, LBLSIZE
);
216 labelstr
[LBLSIZE
-1] = '\0';
217 if (strlen(optarg
) > LBLSIZE
-1) {
219 "WARNING Label `%s' is larger than limit of %d characters.\n",
221 msg("WARNING: Using truncated label `%s'.\n",
226 case 'n': /* notify operators */
230 case 's': /* tape size, feet */
231 tsize
= numarg("tape size", 1L, 0L) * 12 * 10;
234 case 'T': /* time of last dump */
235 spcl
.c_ddate
= unctime(optarg
);
236 if (spcl
.c_ddate
< 0) {
237 (void)fprintf(stderr
, "bad time \"%s\"\n",
245 case 'u': /* update dumpdates */
249 case 'W': /* what to do */
252 exit(X_FINOK
); /* do nothing else */
261 (void)fprintf(stderr
, "Must specify disk or filesystem\n");
267 (void)fprintf(stderr
, "Unknown arguments to dump:");
269 (void)fprintf(stderr
, " %s", *argv
++);
270 (void)fprintf(stderr
, "\n");
273 if (Tflag
&& uflag
) {
274 (void)fprintf(stderr
,
275 "You cannot use the T and u flags together.\n");
278 if (strcmp(tape
, "-") == 0) {
280 tape
= "standard output";
284 blocksperfile
= blocksperfile
/ ntrec
* ntrec
; /* round down */
285 else if (!unlimited
) {
287 * Determine how to default tape size and density
290 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
291 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
292 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
294 * hilit19 hits again: "
297 density
= cartridge
? 100 : 160;
299 tsize
= cartridge
? 1700L*120L : 2300L*120L;
302 if (strchr(tape
, ':')) {
304 tape
= strchr(host
, ':');
307 if (index(tape
, '\n')) {
308 (void)fprintf(stderr
, "invalid characters in tape\n");
311 if (rmthost(host
) == 0)
314 (void)fprintf(stderr
, "remote dump not enabled\n");
318 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
320 if (signal(SIGHUP
, SIG_IGN
) != SIG_IGN
)
322 if (signal(SIGTRAP
, SIG_IGN
) != SIG_IGN
)
323 signal(SIGTRAP
, sig
);
324 if (signal(SIGFPE
, SIG_IGN
) != SIG_IGN
)
326 if (signal(SIGBUS
, SIG_IGN
) != SIG_IGN
)
328 if (signal(SIGSEGV
, SIG_IGN
) != SIG_IGN
)
329 signal(SIGSEGV
, sig
);
330 if (signal(SIGTERM
, SIG_IGN
) != SIG_IGN
)
331 signal(SIGTERM
, sig
);
332 if (signal(SIGINT
, interrupt
) == SIG_IGN
)
333 signal(SIGINT
, SIG_IGN
);
334 set_operators(); /* /etc/group snarfed */
335 getfstab(); /* /etc/fstab snarfed */
337 * disk can be either the full special file name,
338 * the suffix of the special file name,
339 * the special name missing the leading '/',
340 * the file system name with or without the leading '/'.
342 if ((dt
= fstabsearch(disk
)) != NULL
) {
343 disk
= rawname(dt
->fs_spec
);
344 (void)strncpy(spcl
.c_dev
, dt
->fs_spec
, NAMELEN
);
345 (void)strncpy(spcl
.c_filesys
, dt
->fs_file
, NAMELEN
);
349 * The argument was not found in the fstab
350 * assume that this is a subtree and search for it
353 if (realpath(disk
, pathname
) == NULL
)
355 strcpy(pathname
, disk
);
356 dt
= fstabsearchdir(pathname
, directory
);
358 char name
[MAXPATHLEN
];
359 (void)sprintf(name
, "%s (dir %s)",
360 dt
->fs_spec
, directory
);
361 (void)strncpy(spcl
.c_dev
, name
, NAMELEN
);
362 (void)strncpy(spcl
.c_filesys
, dt
->fs_file
, NAMELEN
);
363 disk
= rawname(dt
->fs_spec
);
365 (void)strncpy(spcl
.c_dev
, disk
, NAMELEN
);
366 (void)strncpy(spcl
.c_filesys
, "an unlisted file system",
372 (void)strncpy(spcl
.c_dev
, disk
, NAMELEN
);
373 (void)strncpy(spcl
.c_filesys
, "an unlisted file system",
377 spcl
.c_dev
[NAMELEN
-1]='\0';
378 spcl
.c_filesys
[NAMELEN
-1]='\0';
379 (void)strncpy(spcl
.c_label
, labelstr
, sizeof(spcl
.c_label
) - 1);
380 (void)gethostname(spcl
.c_host
, NAMELEN
);
381 spcl
.c_level
= level
- '0';
382 spcl
.c_type
= TS_TAPE
;
384 getdumptime(uflag
); /* dumpdates snarfed */
386 if (spcl
.c_ddate
== 0 && spcl
.c_level
) {
387 msg("WARNING: There is no inferior level dump on this filesystem\n");
388 msg("WARNING: Assuming a level 0 dump by default\n");
393 msg("Date of this level %c dump: %s", level
,
395 spcl
.c_date
== 0 ? "the epoch\n" : ctime4(&spcl
.c_date
));
397 spcl
.c_date
== 0 ? "the epoch\n" : ctime(&spcl
.c_date
));
399 msg("Date of last level %c dump: %s", lastlevel
,
401 spcl
.c_ddate
== 0 ? "the epoch\n" : ctime4(&spcl
.c_ddate
));
403 spcl
.c_ddate
== 0 ? "the epoch\n" : ctime(&spcl
.c_ddate
));
405 msg("Dumping %s ", disk
);
407 msgtail("(%s) ", dt
->fs_file
);
409 msgtail("to %s on host %s\n", tape
, host
);
411 msgtail("to %s\n", tape
);
412 msg("Label: %s\n", labelstr
);
415 retval
= ext2fs_open(disk
, 0, 0, 0, unix_io_manager
, &fs
);
417 com_err(disk
, retval
, "while opening filesystem");
418 if (retval
== EXT2_ET_REV_TOO_HIGH
)
419 printf ("Get a newer version of dump!\n");
422 if (fs
->super
->s_rev_level
> DUMP_CURRENT_REV
) {
423 com_err(disk
, retval
, "while opening filesystem");
424 printf ("Get a newer version of dump!\n");
427 if ((diskfd
= open(disk
, O_RDONLY
)) < 0) {
428 msg("Cannot open %s\n", disk
);
432 dev_bsize
= DEV_BSIZE
;
433 dev_bshift
= ffs(dev_bsize
) - 1;
434 if (dev_bsize
!= (1 << dev_bshift
))
435 quit("dev_bsize (%d) is not a power of 2", dev_bsize
);
436 tp_bshift
= ffs(TP_BSIZE
) - 1;
437 if (TP_BSIZE
!= (1 << tp_bshift
))
438 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE
);
439 maxino
= fs
->super
->s_inodes_count
;
441 spcl
.c_flags
|= DR_NEWINODEFMT
;
443 #else /* __linux __*/
444 if ((diskfd
= open(disk
, O_RDONLY
)) < 0) {
445 msg("Cannot open %s\n", disk
);
449 sblock
= (struct fs
*)sblock_buf
;
450 bread(SBOFF
, (char *) sblock
, SBSIZE
);
451 if (sblock
->fs_magic
!= FS_MAGIC
)
452 quit("bad sblock magic number\n");
453 dev_bsize
= sblock
->fs_fsize
/ fsbtodb(sblock
, 1);
454 dev_bshift
= ffs(dev_bsize
) - 1;
455 if (dev_bsize
!= (1 << dev_bshift
))
456 quit("dev_bsize (%d) is not a power of 2", dev_bsize
);
457 tp_bshift
= ffs(TP_BSIZE
) - 1;
458 if (TP_BSIZE
!= (1 << tp_bshift
))
459 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE
);
461 if (sblock
->fs_inodefmt
>= FS_44INODEFMT
)
462 spcl
.c_flags
|= DR_NEWINODEFMT
;
464 maxino
= sblock
->fs_ipg
* sblock
->fs_ncg
;
465 #endif /* __linux__ */
466 mapsize
= roundup(howmany(maxino
, NBBY
), TP_BSIZE
);
467 usedinomap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
468 dumpdirmap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
469 dumpinomap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
470 tapesize
= 3 * (howmany(mapsize
* sizeof(char), TP_BSIZE
) + 1);
472 nonodump
= spcl
.c_level
< honorlevel
;
475 (void)signal(SIGINFO
, statussig
);
478 msg("mapping (Pass I) [regular files]\n");
480 if (directory
[0] == 0)
481 anydirskipped
= mapfiles(maxino
, &tapesize
);
483 anydirskipped
= mapfilesfromdir(maxino
, &tapesize
, directory
);
485 anydirskipped
= mapfiles(maxino
, &tapesize
);
488 msg("mapping (Pass II) [directories]\n");
489 while (anydirskipped
) {
490 anydirskipped
= mapdirs(maxino
, &tapesize
);
493 if (pipeout
|| unlimited
) {
494 tapesize
+= 10; /* 10 trailer blocks */
495 msg("estimated %ld tape blocks.\n", tapesize
);
500 fetapes
= (double) tapesize
/ blocksperfile
;
501 else if (cartridge
) {
502 /* Estimate number of tapes, assuming streaming stops at
503 the end of each block written, and not in mid-block.
504 Assume no erroneous blocks; this can be compensated
505 for with an artificially low tape size. */
507 ( (double) tapesize
/* blocks */
508 * TP_BSIZE
/* bytes/block */
509 * (1.0/density
) /* 0.1" / byte " */
511 (double) tapesize
/* blocks */
512 * (1.0/ntrec
) /* streaming-stops per block */
513 * 15.48 /* 0.1" / streaming-stop " */
514 ) * (1.0 / tsize
); /* tape / 0.1" " */
516 /* Estimate number of tapes, for old fashioned 9-track
518 int tenthsperirg
= (density
== 625) ? 3 : 7;
520 ( (double) tapesize
/* blocks */
521 * TP_BSIZE
/* bytes / block */
522 * (1.0/density
) /* 0.1" / byte " */
524 (double) tapesize
/* blocks */
525 * (1.0/ntrec
) /* IRG's / block */
526 * tenthsperirg
/* 0.1" / IRG " */
527 ) * (1.0 / tsize
); /* tape / 0.1" " */
529 etapes
= fetapes
; /* truncating assignment */
531 /* count the dumped inodes map on each additional tape */
532 tapesize
+= (etapes
- 1) *
533 (howmany(mapsize
* sizeof(char), TP_BSIZE
) + 1);
534 tapesize
+= etapes
+ 10; /* headers + 10 trailer blks */
535 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
540 * Allocate tape buffer.
544 "can't allocate tape buffers - try a smaller blocking factor.\n");
548 (void)time4(&(tstart_writing
));
550 (void)time((time_t *)&(tstart_writing
));
552 dumpmap(usedinomap
, TS_CLRI
, maxino
- 1);
554 msg("dumping (Pass III) [directories]\n");
555 dirty
= 0; /* XXX just to get gcc to shut up */
556 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
557 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
561 if ((dirty
& 1) == 0)
564 * Skip directory inodes deleted and maybe reallocated
567 if ((dp
->di_mode
& IFMT
) != IFDIR
)
570 (void)dumpdirino(dp
, ino
);
572 (void)dumpino(dp
, ino
);
576 msg("dumping (Pass IV) [regular files]\n");
577 for (map
= dumpinomap
, ino
= 1; ino
< maxino
; ino
++) {
580 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
584 if ((dirty
& 1) == 0)
587 * Skip inodes deleted and reallocated as directories.
590 mode
= dp
->di_mode
& IFMT
;
593 (void)dumpino(dp
, ino
);
597 (void)time4(&(tend_writing
));
599 (void)time((time_t *)&(tend_writing
));
601 spcl
.c_type
= TS_END
;
602 for (i
= 0; i
< ntrec
; i
++)
603 writeheader(maxino
- 1);
605 msg("DUMP: %ld tape blocks\n", spcl
.c_tapea
);
607 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
608 spcl
.c_tapea
, spcl
.c_volume
);
610 /* report dump performance, avoid division through zero */
611 if (tend_writing
- tstart_writing
== 0)
612 msg("finished in less than a second\n");
614 msg("finished in %d seconds, throughput %d KBytes/sec\n",
615 tend_writing
- tstart_writing
,
616 spcl
.c_tapea
/ (tend_writing
- tstart_writing
));
621 msg("DUMP: Date of this level %c dump: %s", level
,
622 spcl
.c_date
== 0 ? "the epoch\n" : ctime4(&spcl
.c_date
));
624 msg("DUMP: Date of this level %c dump: %s", level
,
625 spcl
.c_date
== 0 ? "the epoch\n" : ctime(&spcl
.c_date
));
627 msg("DUMP: Date this dump completed: %s", ctime(&tnow
));
629 msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate
/ tapeno
);
632 broadcast("DUMP IS DONE!\7\7\n");
633 msg("DUMP IS DONE\n");
636 return 0; /* gcc - shut up */
643 "usage: %s [-0123456789ac"
647 "nu] [-B records] [-b blocksize] [-d density] [-f file]\n"
648 " [-h level] [-s feet] [-T date] filesystem\n"
649 " %s [-W | -w]\n", __progname
, __progname
);
654 * Pick up a numeric argument. It must be nonnegative and in the given
655 * range (except that a vmax of 0 means unlimited).
658 numarg(const char *meaning
, long vmin
, long vmax
)
663 val
= strtol(optarg
, &p
, 10);
665 errx(X_STARTUP
, "illegal %s -- %s", meaning
, optarg
);
666 if (val
< vmin
|| (vmax
&& val
> vmax
))
667 errx(X_STARTUP
, "%s must be between %ld and %ld", meaning
, vmin
, vmax
);
682 quit("Signal on pipe: cannot recover\n");
683 msg("Rewriting attempted as response to unknown signal.\n");
684 (void)fflush(stderr
);
685 (void)fflush(stdout
);
690 msg("SIGSEGV: ABORTING!\n");
691 (void)signal(SIGSEGV
, SIG_DFL
);
692 (void)kill(0, SIGSEGV
);
702 #else /* __linux__ */
703 static char rawbuf
[MAXPATHLEN
];
704 char *dp
= strrchr(cp
, '/');
709 (void)strncpy(rawbuf
, cp
, MAXPATHLEN
- 1);
710 rawbuf
[MAXPATHLEN
-1] = '\0';
712 (void)strncat(rawbuf
, "/r", MAXPATHLEN
- 1 - strlen(rawbuf
));
713 (void)strncat(rawbuf
, dp
+ 1, MAXPATHLEN
- 1 - strlen(rawbuf
));
715 #endif /* __linux__ */
720 * Change set of key letters and ordered arguments into something
721 * getopt(3) will like.
724 obsolete(int *argcp
, char **argvp
[])
727 char *ap
, **argv
, *flagsp
=NULL
, **nargv
, *p
=NULL
;
733 /* Return if no arguments or first argument has leading dash. */
735 if (argc
== 1 || *ap
== '-')
738 /* Allocate space for new arguments. */
739 if ((*argvp
= nargv
= malloc((argc
+ 1) * sizeof(char *))) == NULL
||
740 (p
= flagsp
= malloc(strlen(ap
) + 2)) == NULL
)
741 err(X_STARTUP
, "malloc new args");
746 for (flags
= 0; *ap
; ++ap
) {
756 warnx("option requires an argument -- %c", *ap
);
759 if ((nargv
[0] = malloc(strlen(*argv
) + 2 + 1)) == NULL
)
760 err(X_STARTUP
, "malloc arg");
763 (void)strcpy(&nargv
[0][2], *argv
);
777 /* Terminate flags. */
783 /* Copy remaining arguments. */
784 while ((*nargv
++ = *argv
++));
786 /* Update argument count. */
787 *argcp
= nargv
- *argvp
- 1;