]>
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, 1995, 1996
9 * Copyright (c) 1980, 1991, 1993, 1994
10 * The Regents of the University of California. All rights reserved.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the University of
23 * California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 static char copyright
[] =
43 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
44 The Regents of the University of California. All rights reserved.\n";
48 static char sccsid
[] = "@(#)main.c 8.6 (Berkeley) 5/1/95";
51 #include <sys/param.h>
54 #include <linux/ext2_fs.h>
56 #include <bsdcompat.h>
59 #include <sys/vnode.h>
61 #include <ufs/inode.h>
64 #include <ufs/ufs/dinode.h>
65 #include <ufs/ffs/fs.h>
69 #include <protocols/dumprestore.h>
83 #include <ext2fs/ext2fs.h>
87 #include "pathnames.h"
90 #define SBOFF (SBLOCK * DEV_BSIZE)
93 int notify
= 0; /* notify operator flag */
94 int blockswritten
= 0; /* number of blocks written on current tape */
95 int tapeno
= 0; /* current tape number */
96 int density
= 0; /* density in bytes/0.1" */
97 int ntrec
= NTREC
; /* # tape blocks in each tape record */
98 int cartridge
= 0; /* Assume non-cartridge tape */
99 long dev_bsize
= 1; /* recalculated below */
100 long blocksperfile
; /* output blocks per file */
101 char *host
= NULL
; /* remote host (if any) */
107 static long numarg
__P((char *, long, long));
108 static void obsolete
__P((int *, char **[]));
109 static void usage
__P((void));
118 register struct dinode
*dp
;
119 register struct fstab
*dt
;
122 int i
, anydirskipped
, bflag
= 0, Tflag
= 0, honorlevel
= 1;
126 char directory
[NAME_MAX
];
127 char pathname
[NAME_MAX
];
132 (void)time4(&spcl
.c_date
);
134 (void)time((time_t *)&spcl
.c_date
);
138 __progname
= argv
[0];
140 initialize_ext2_error_table();
143 tsize
= 0; /* Default later, based on 'c' option for cart tapes */
144 tape
= _PATH_DEFTAPE
;
145 dumpdates
= _PATH_DUMPDATES
;
147 if (TP_BSIZE
/ DEV_BSIZE
== 0 || TP_BSIZE
% DEV_BSIZE
!= 0)
148 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
153 obsolete(&argc
, &argv
);
154 while ((ch
= getopt(argc
, argv
, "0123456789B:b:cd:f:h:ns:T:uWw")) != -1) switch (ch
) {
156 case '0': case '1': case '2': case '3': case '4':
157 case '5': case '6': case '7': case '8': case '9':
161 case 'B': /* blocks per output file */
162 blocksperfile
= numarg("blocks per file", 1L, 0L);
165 case 'b': /* blocks per tape write */
166 ntrec
= numarg("blocks per write", 1L, 1000L);
169 case 'c': /* Tape is cart. not 9-track */
173 case 'd': /* density, in bits per inch */
174 density
= numarg("density", 10L, 327670L) / 10;
175 if (density
>= 625 && !bflag
)
176 ntrec
= HIGHDENSITYTREC
;
179 case 'f': /* output file */
184 honorlevel
= numarg("honor level", 0L, 10L);
187 case 'n': /* notify operators */
191 case 's': /* tape size, feet */
192 tsize
= numarg("tape size", 1L, 0L) * 12 * 10;
195 case 'T': /* time of last dump */
196 spcl
.c_ddate
= unctime(optarg
);
197 if (spcl
.c_ddate
< 0) {
198 (void)fprintf(stderr
, "bad time \"%s\"\n",
205 case 'u': /* update /etc/dumpdates */
209 case 'W': /* what to do */
212 exit(0); /* do nothing else */
221 (void)fprintf(stderr
, "Must specify disk or filesystem\n");
227 (void)fprintf(stderr
, "Unknown arguments to dump:");
229 (void)fprintf(stderr
, " %s", *argv
++);
230 (void)fprintf(stderr
, "\n");
233 if (Tflag
&& uflag
) {
234 (void)fprintf(stderr
,
235 "You cannot use the T and u flags together.\n");
238 if (strcmp(tape
, "-") == 0) {
240 tape
= "standard output";
244 blocksperfile
= blocksperfile
/ ntrec
* ntrec
; /* round down */
247 * Determine how to default tape size and density
250 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
251 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
252 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
256 density
= cartridge
? 100 : 160;
258 tsize
= cartridge
? 1700L*120L : 2300L*120L;
261 if (strchr(tape
, ':')) {
263 tape
= strchr(host
, ':');
266 if (rmthost(host
) == 0)
269 (void)fprintf(stderr
, "remote dump not enabled\n");
273 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
275 if (signal(SIGHUP
, SIG_IGN
) != SIG_IGN
)
277 if (signal(SIGTRAP
, SIG_IGN
) != SIG_IGN
)
278 signal(SIGTRAP
, sig
);
279 if (signal(SIGFPE
, SIG_IGN
) != SIG_IGN
)
281 if (signal(SIGBUS
, SIG_IGN
) != SIG_IGN
)
283 if (signal(SIGSEGV
, SIG_IGN
) != SIG_IGN
)
284 signal(SIGSEGV
, sig
);
285 if (signal(SIGTERM
, SIG_IGN
) != SIG_IGN
)
286 signal(SIGTERM
, sig
);
287 if (signal(SIGINT
, interrupt
) == SIG_IGN
)
288 signal(SIGINT
, SIG_IGN
);
290 set_operators(); /* /etc/group snarfed */
291 getfstab(); /* /etc/fstab snarfed */
293 * disk can be either the full special file name,
294 * the suffix of the special file name,
295 * the special name missing the leading '/',
296 * the file system name with or without the leading '/'.
298 dt
= fstabsearch(disk
);
300 disk
= rawname(dt
->fs_spec
);
301 (void)strncpy(spcl
.c_dev
, dt
->fs_spec
, NAMELEN
);
302 (void)strncpy(spcl
.c_filesys
, dt
->fs_file
, NAMELEN
);
306 * The argument was not found in the fstab
307 * assume that this is a subtree and search for it
310 if (realpath(disk
, pathname
) == NULL
)
312 strcpy(pathname
, disk
);
313 dt
= fstabsearchdir(pathname
, directory
);
315 char name
[MAXPATHLEN
];
316 (void)sprintf(name
, "%s (dir %s)",
317 dt
->fs_spec
, directory
);
318 (void)strncpy(spcl
.c_dev
, name
, NAMELEN
);
319 (void)strncpy(spcl
.c_filesys
, dt
->fs_file
, NAMELEN
);
320 disk
= rawname(dt
->fs_spec
);
322 (void)strncpy(spcl
.c_dev
, disk
, NAMELEN
);
323 (void)strncpy(spcl
.c_filesys
, "an unlisted file system",
329 (void)strncpy(spcl
.c_dev
, disk
, NAMELEN
);
330 (void)strncpy(spcl
.c_filesys
, "an unlisted file system",
334 (void)strcpy(spcl
.c_label
, "none");
335 (void)gethostname(spcl
.c_host
, NAMELEN
);
336 spcl
.c_level
= level
- '0';
337 spcl
.c_type
= TS_TAPE
;
339 getdumptime(); /* /etc/dumpdates snarfed */
341 msg("Date of this level %c dump: %s", level
,
343 spcl
.c_date
== 0 ? "the epoch\n" : ctime4(&spcl
.c_date
));
345 spcl
.c_date
== 0 ? "the epoch\n" : ctime(&spcl
.c_date
));
347 msg("Date of last level %c dump: %s", lastlevel
,
349 spcl
.c_ddate
== 0 ? "the epoch\n" : ctime4(&spcl
.c_ddate
));
351 spcl
.c_ddate
== 0 ? "the epoch\n" : ctime(&spcl
.c_ddate
));
353 msg("Dumping %s ", disk
);
355 msgtail("(%s) ", dt
->fs_file
);
357 msgtail("to %s on host %s\n", tape
, host
);
359 msgtail("to %s\n", tape
);
362 retval
= ext2fs_open(disk
, 0, 0, 0, unix_io_manager
, &fs
);
364 com_err(disk
, retval
, "while opening filesystem");
365 if (retval
== EXT2_ET_REV_TOO_HIGH
)
366 printf ("Get a newer version of dump!\n");
369 if (fs
->super
->s_rev_level
> DUMP_CURRENT_REV
) {
370 com_err(disk
, retval
, "while opening filesystem");
371 printf ("Get a newer version of dump!\n");
374 if ((diskfd
= open(disk
, O_RDONLY
)) < 0) {
375 msg("Cannot open %s\n", disk
);
379 dev_bsize
= DEV_BSIZE
;
380 dev_bshift
= ffs(dev_bsize
) - 1;
381 if (dev_bsize
!= (1 << dev_bshift
))
382 quit("dev_bsize (%d) is not a power of 2", dev_bsize
);
383 tp_bshift
= ffs(TP_BSIZE
) - 1;
384 if (TP_BSIZE
!= (1 << tp_bshift
))
385 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE
);
386 maxino
= fs
->super
->s_inodes_count
;
388 spcl
.c_flags
|= DR_NEWINODEFMT
;
390 #else /* __linux __*/
391 if ((diskfd
= open(disk
, O_RDONLY
)) < 0) {
392 msg("Cannot open %s\n", disk
);
396 sblock
= (struct fs
*)sblock_buf
;
397 bread(SBOFF
, (char *) sblock
, SBSIZE
);
398 if (sblock
->fs_magic
!= FS_MAGIC
)
399 quit("bad sblock magic number\n");
400 dev_bsize
= sblock
->fs_fsize
/ fsbtodb(sblock
, 1);
401 dev_bshift
= ffs(dev_bsize
) - 1;
402 if (dev_bsize
!= (1 << dev_bshift
))
403 quit("dev_bsize (%d) is not a power of 2", dev_bsize
);
404 tp_bshift
= ffs(TP_BSIZE
) - 1;
405 if (TP_BSIZE
!= (1 << tp_bshift
))
406 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE
);
407 spcl
.c_flags
|= DR_NEWINODEFMT
;
409 if (sblock
->fs_inodefmt
>= FS_44INODEFMT
)
410 spcl
.c_flags
|= DR_NEWINODEFMT
;
412 maxino
= sblock
->fs_ipg
* sblock
->fs_ncg
;
413 #endif /* __linux__ */
414 mapsize
= roundup(howmany(maxino
, NBBY
), TP_BSIZE
);
415 usedinomap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
416 dumpdirmap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
417 dumpinomap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
418 tapesize
= 3 * (howmany(mapsize
* sizeof(char), TP_BSIZE
) + 1);
420 nonodump
= spcl
.c_level
< honorlevel
;
422 msg("mapping (Pass I) [regular files]\n");
424 if (directory
[0] == 0)
425 anydirskipped
= mapfiles(maxino
, &tapesize
);
427 anydirskipped
= mapfilesfromdir(maxino
, &tapesize
, directory
);
429 anydirskipped
= mapfiles(maxino
, &tapesize
);
432 msg("mapping (Pass II) [directories]\n");
433 while (anydirskipped
) {
434 anydirskipped
= mapdirs(maxino
, &tapesize
);
438 tapesize
+= 10; /* 10 trailer blocks */
439 msg("estimated %ld tape blocks.\n", tapesize
);
444 fetapes
= (double) tapesize
/ blocksperfile
;
445 else if (cartridge
) {
446 /* Estimate number of tapes, assuming streaming stops at
447 the end of each block written, and not in mid-block.
448 Assume no erroneous blocks; this can be compensated
449 for with an artificially low tape size. */
451 ( tapesize
/* blocks */
452 * TP_BSIZE
/* bytes/block */
453 * (1.0/density
) /* 0.1" / byte */
455 tapesize
/* blocks */
456 * (1.0/ntrec
) /* streaming-stops per block */
457 * 15.48 /* 0.1" / streaming-stop */
458 ) * (1.0 / tsize
); /* tape / 0.1" */
460 /* Estimate number of tapes, for old fashioned 9-track
462 int tenthsperirg
= (density
== 625) ? 3 : 7;
464 ( tapesize
/* blocks */
465 * TP_BSIZE
/* bytes / block */
466 * (1.0/density
) /* 0.1" / byte */
468 tapesize
/* blocks */
469 * (1.0/ntrec
) /* IRG's / block */
470 * tenthsperirg
/* 0.1" / IRG */
471 ) * (1.0 / tsize
); /* tape / 0.1" */
473 etapes
= fetapes
; /* truncating assignment */
475 /* count the dumped inodes map on each additional tape */
476 tapesize
+= (etapes
- 1) *
477 (howmany(mapsize
* sizeof(char), TP_BSIZE
) + 1);
478 tapesize
+= etapes
+ 10; /* headers + 10 trailer blks */
479 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
484 * Allocate tape buffer.
487 quit("can't allocate tape buffers - try a smaller blocking factor.\n");
490 (void)time((time_t *)&(tstart_writing
));
491 dumpmap(usedinomap
, TS_CLRI
, maxino
- 1);
493 msg("dumping (Pass III) [directories]\n");
494 dirty
= 0; /* XXX just to get gcc to shut up */
495 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
496 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
500 if ((dirty
& 1) == 0)
503 * Skip directory inodes deleted and maybe reallocated
506 if ((dp
->di_mode
& IFMT
) != IFDIR
)
509 (void)dumpdirino(dp
, ino
);
511 (void)dumpino(dp
, ino
);
515 msg("dumping (Pass IV) [regular files]\n");
516 for (map
= dumpinomap
, ino
= 1; ino
< maxino
; ino
++) {
519 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
523 if ((dirty
& 1) == 0)
526 * Skip inodes deleted and reallocated as directories.
529 mode
= dp
->di_mode
& IFMT
;
532 (void)dumpino(dp
, ino
);
536 (void)time((time_t *)&(tend_writing
));
538 spcl
.c_type
= TS_END
;
539 for (i
= 0; i
< ntrec
; i
++)
540 writeheader(maxino
- 1);
542 msg("DUMP: %ld tape blocks\n",spcl
.c_tapea
);
544 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
545 spcl
.c_tapea
, spcl
.c_volume
);
547 /* report dump performance, avoid division through zero */
548 if (tend_writing
- tstart_writing
== 0)
549 msg("finished in less than a second\n");
551 msg("finished in %d seconds, throughput %d KBytes/sec\n",
552 tend_writing
- tstart_writing
,
553 spcl
.c_tapea
/ (tend_writing
- tstart_writing
));
557 broadcast("DUMP IS DONE!\7\7\n");
558 msg("DUMP IS DONE\n");
567 (void)fprintf(stderr
, "usage: dump [-0123456789cnu] [-B records] [-b blocksize] [-d density] [-f file]\n [-h level] [-s feet] [-T date] filesystem\n");
568 (void)fprintf(stderr
, " dump [-W | -w]\n");
573 * Pick up a numeric argument. It must be nonnegative and in the given
574 * range (except that a vmax of 0 means unlimited).
577 numarg(meaning
, vmin
, vmax
)
584 val
= strtol(optarg
, &p
, 10);
586 errx(1, "illegal %s -- %s", meaning
, optarg
);
587 if (val
< vmin
|| (vmax
&& val
> vmax
))
588 errx(1, "%s must be between %ld and %ld", meaning
, vmin
, vmax
);
604 quit("Signal on pipe: cannot recover\n");
605 msg("Rewriting attempted as response to unknown signal.\n");
606 (void)fflush(stderr
);
607 (void)fflush(stdout
);
612 msg("SIGSEGV: ABORTING!\n");
613 (void)signal(SIGSEGV
, SIG_DFL
);
614 (void)kill(0, SIGSEGV
);
625 #else /* __linux__ */
626 static char rawbuf
[MAXPATHLEN
];
627 char *dp
= strrchr(cp
, '/');
632 (void)strcpy(rawbuf
, cp
);
634 (void)strcat(rawbuf
, "/r");
635 (void)strcat(rawbuf
, dp
+ 1);
637 #endif /* __linux__ */
642 * Change set of key letters and ordered arguments into something
643 * getopt(3) will like.
646 obsolete(argcp
, argvp
)
651 char *ap
, **argv
, *flagsp
, **nargv
, *p
;
657 /* Return if no arguments or first argument has leading dash. */
659 if (argc
== 1 || *ap
== '-')
662 /* Allocate space for new arguments. */
663 if ((*argvp
= nargv
= malloc((argc
+ 1) * sizeof(char *))) == NULL
||
664 (p
= flagsp
= malloc(strlen(ap
) + 2)) == NULL
)
670 for (flags
= 0; *ap
; ++ap
) {
680 warnx("option requires an argument -- %c", *ap
); usage();
682 if ((nargv
[0] = malloc(strlen(*argv
) + 2 + 1)) == NULL
)
686 (void)strcpy(&nargv
[0][2], *argv
);
700 /* Terminate flags. */
706 /* Copy remaining arguments. */
707 while (*nargv
++ = *argv
++);
709 /* Update argument count. */
710 *argcp
= nargv
- *argvp
- 1;