]>
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
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 const char rcsid
[] =
43 "$Id: main.c,v 1.6 1999/10/13 09:57:19 stelian Exp $";
46 #include <sys/param.h>
49 #include <linux/ext2_fs.h>
51 #include <bsdcompat.h>
54 #include <sys/vnode.h>
56 #include <ufs/inode.h>
59 #include <ufs/ufs/dinode.h>
60 #include <ufs/ffs/fs.h>
64 #include <protocols/dumprestore.h>
67 #include <compaterr.h>
77 #include <ext2fs/ext2fs.h>
81 #include "pathnames.h"
84 #define SBOFF (SBLOCK * DEV_BSIZE)
87 int notify
= 0; /* notify operator flag */
88 int blockswritten
= 0; /* number of blocks written on current tape */
89 int tapeno
= 0; /* current tape number */
90 int density
= 0; /* density in bytes/0.1" " <- this is for hilit19 */
91 int ntrec
= NTREC
; /* # tape blocks in each tape record */
92 int cartridge
= 0; /* Assume non-cartridge tape */
93 int dokerberos
= 0; /* Use Kerberos authentication */
94 long dev_bsize
= 1; /* recalculated below */
95 long blocksperfile
; /* output blocks per file */
96 char *host
= NULL
; /* remote host (if any) */
102 int maxbsize
= 64*1024; /* XXX MAXBSIZE from sys/param.h */
103 static long numarg
__P((const char *, long, long));
104 static void obsolete
__P((int *, char **[]));
105 static void usage
__P((void));
108 main(int argc
, char *argv
[])
112 register struct dinode
*dp
;
113 register struct fstab
*dt
;
116 int i
, anydirskipped
, bflag
= 0, Tflag
= 0, honorlevel
= 1;
120 char directory
[NAME_MAX
];
121 char pathname
[NAME_MAX
];
124 char labelstr
[LBLSIZE
];
128 (void)time4(&spcl
.c_date
);
130 (void)time((time_t *)&spcl
.c_date
);
134 __progname
= argv
[0];
136 initialize_ext2_error_table();
139 tsize
= 0; /* Default later, based on 'c' option for cart tapes */
140 if ((tape
= getenv("TAPE")) == NULL
)
141 tape
= _PATH_DEFTAPE
;
142 dumpdates
= _PATH_DUMPDATES
;
144 strcpy(labelstr
, "none"); /* XXX safe strcpy. */
145 if (TP_BSIZE
/ DEV_BSIZE
== 0 || TP_BSIZE
% DEV_BSIZE
!= 0)
146 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
152 obsolete(&argc
, &argv
);
154 #define optstring "0123456789aB:b:cd:f:h:kL:ns:T:uWw"
156 #define optstring "0123456789aB:b:cd:f:h:L:ns:T:uWw"
158 while ((ch
= getopt(argc
, argv
, optstring
)) != -1)
162 case '0': case '1': case '2': case '3': case '4':
163 case '5': case '6': case '7': case '8': case '9':
167 case 'a': /* `auto-size', Write to EOM. */
171 case 'B': /* blocks per output file */
172 blocksperfile
= numarg("number of blocks per file",
176 case 'b': /* blocks per tape write */
177 ntrec
= numarg("number of blocks per write",
179 if (ntrec
> maxbsize
/1024) {
180 msg("Please choose a blocksize <= %dKB\n",
187 case 'c': /* Tape is cart. not 9-track */
191 case 'd': /* density, in bits per inch */
192 density
= numarg("density", 10L, 327670L) / 10;
193 if (density
>= 625 && !bflag
)
194 ntrec
= HIGHDENSITYTREC
;
197 case 'f': /* output file */
202 honorlevel
= numarg("honor level", 0L, 10L);
213 * Note that although there are LBLSIZE characters,
214 * the last must be '\0', so the limit on strlen()
215 * is really LBLSIZE-1.
217 strncpy(labelstr
, optarg
, LBLSIZE
);
218 labelstr
[LBLSIZE
-1] = '\0';
219 if (strlen(optarg
) > LBLSIZE
-1) {
221 "WARNING Label `%s' is larger than limit of %d characters.\n",
223 msg("WARNING: Using truncated label `%s'.\n",
228 case 'n': /* notify operators */
232 case 's': /* tape size, feet */
233 tsize
= numarg("tape size", 1L, 0L) * 12 * 10;
236 case 'T': /* time of last dump */
237 spcl
.c_ddate
= unctime(optarg
);
238 if (spcl
.c_ddate
< 0) {
239 (void)fprintf(stderr
, "bad time \"%s\"\n",
247 case 'u': /* update dumpdates */
251 case 'W': /* what to do */
254 exit(X_FINOK
); /* do nothing else */
263 (void)fprintf(stderr
, "Must specify disk or filesystem\n");
269 (void)fprintf(stderr
, "Unknown arguments to dump:");
271 (void)fprintf(stderr
, " %s", *argv
++);
272 (void)fprintf(stderr
, "\n");
275 if (Tflag
&& uflag
) {
276 (void)fprintf(stderr
,
277 "You cannot use the T and u flags together.\n");
280 if (strcmp(tape
, "-") == 0) {
282 tape
= "standard output";
286 blocksperfile
= blocksperfile
/ ntrec
* ntrec
; /* round down */
287 else if (!unlimited
) {
289 * Determine how to default tape size and density
292 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
293 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
294 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
296 * hilit19 hits again: "
299 density
= cartridge
? 100 : 160;
301 tsize
= cartridge
? 1700L*120L : 2300L*120L;
304 if (strchr(tape
, ':')) {
306 tape
= strchr(host
, ':');
309 if (index(tape
, '\n')) {
310 (void)fprintf(stderr
, "invalid characters in tape\n");
313 if (rmthost(host
) == 0)
316 (void)fprintf(stderr
, "remote dump not enabled\n");
320 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
322 if (signal(SIGHUP
, SIG_IGN
) != SIG_IGN
)
324 if (signal(SIGTRAP
, SIG_IGN
) != SIG_IGN
)
325 signal(SIGTRAP
, sig
);
326 if (signal(SIGFPE
, SIG_IGN
) != SIG_IGN
)
328 if (signal(SIGBUS
, SIG_IGN
) != SIG_IGN
)
330 if (signal(SIGSEGV
, SIG_IGN
) != SIG_IGN
)
331 signal(SIGSEGV
, sig
);
332 if (signal(SIGTERM
, SIG_IGN
) != SIG_IGN
)
333 signal(SIGTERM
, sig
);
334 if (signal(SIGINT
, interrupt
) == SIG_IGN
)
335 signal(SIGINT
, SIG_IGN
);
336 set_operators(); /* /etc/group snarfed */
337 getfstab(); /* /etc/fstab snarfed */
339 * disk can be either the full special file name,
340 * the suffix of the special file name,
341 * the special name missing the leading '/',
342 * the file system name with or without the leading '/'.
344 if ((dt
= fstabsearch(disk
)) != NULL
) {
345 disk
= rawname(dt
->fs_spec
);
346 (void)strncpy(spcl
.c_dev
, dt
->fs_spec
, NAMELEN
);
347 (void)strncpy(spcl
.c_filesys
, dt
->fs_file
, NAMELEN
);
351 * The argument was not found in the fstab
352 * assume that this is a subtree and search for it
355 if (realpath(disk
, pathname
) == NULL
)
357 strcpy(pathname
, disk
);
358 dt
= fstabsearchdir(pathname
, directory
);
360 char name
[MAXPATHLEN
];
361 (void)sprintf(name
, "%s (dir %s)",
362 dt
->fs_spec
, directory
);
363 (void)strncpy(spcl
.c_dev
, name
, NAMELEN
);
364 (void)strncpy(spcl
.c_filesys
, dt
->fs_file
, NAMELEN
);
365 disk
= rawname(dt
->fs_spec
);
367 (void)strncpy(spcl
.c_dev
, disk
, NAMELEN
);
368 (void)strncpy(spcl
.c_filesys
, "an unlisted file system",
374 (void)strncpy(spcl
.c_dev
, disk
, NAMELEN
);
375 (void)strncpy(spcl
.c_filesys
, "an unlisted file system",
379 spcl
.c_dev
[NAMELEN
-1]='\0';
380 spcl
.c_filesys
[NAMELEN
-1]='\0';
381 (void)strncpy(spcl
.c_label
, labelstr
, sizeof(spcl
.c_label
) - 1);
382 (void)gethostname(spcl
.c_host
, NAMELEN
);
383 spcl
.c_level
= level
- '0';
384 spcl
.c_type
= TS_TAPE
;
386 getdumptime(uflag
); /* dumpdates snarfed */
388 if (spcl
.c_ddate
== 0 && spcl
.c_level
) {
389 msg("WARNING: There is no inferior level dump on this filesystem\n");
390 msg("WARNING: Assuming a level 0 dump by default\n");
395 msg("Date of this level %c dump: %s", level
,
397 spcl
.c_date
== 0 ? "the epoch\n" : ctime4(&spcl
.c_date
));
399 spcl
.c_date
== 0 ? "the epoch\n" : ctime(&spcl
.c_date
));
401 msg("Date of last level %c dump: %s", lastlevel
,
403 spcl
.c_ddate
== 0 ? "the epoch\n" : ctime4(&spcl
.c_ddate
));
405 spcl
.c_ddate
== 0 ? "the epoch\n" : ctime(&spcl
.c_ddate
));
407 msg("Dumping %s ", disk
);
409 msgtail("(%s) ", dt
->fs_file
);
411 msgtail("to %s on host %s\n", tape
, host
);
413 msgtail("to %s\n", tape
);
414 msg("Label: %s\n", labelstr
);
417 retval
= ext2fs_open(disk
, 0, 0, 0, unix_io_manager
, &fs
);
419 com_err(disk
, retval
, "while opening filesystem");
420 if (retval
== EXT2_ET_REV_TOO_HIGH
)
421 printf ("Get a newer version of dump!\n");
424 if (fs
->super
->s_rev_level
> DUMP_CURRENT_REV
) {
425 com_err(disk
, retval
, "while opening filesystem");
426 printf ("Get a newer version of dump!\n");
429 if ((diskfd
= open(disk
, O_RDONLY
)) < 0) {
430 msg("Cannot open %s\n", disk
);
434 dev_bsize
= DEV_BSIZE
;
435 dev_bshift
= ffs(dev_bsize
) - 1;
436 if (dev_bsize
!= (1 << dev_bshift
))
437 quit("dev_bsize (%d) is not a power of 2", dev_bsize
);
438 tp_bshift
= ffs(TP_BSIZE
) - 1;
439 if (TP_BSIZE
!= (1 << tp_bshift
))
440 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE
);
441 maxino
= fs
->super
->s_inodes_count
;
443 spcl
.c_flags
|= DR_NEWINODEFMT
;
445 #else /* __linux __*/
446 if ((diskfd
= open(disk
, O_RDONLY
)) < 0) {
447 msg("Cannot open %s\n", disk
);
451 sblock
= (struct fs
*)sblock_buf
;
452 bread(SBOFF
, (char *) sblock
, SBSIZE
);
453 if (sblock
->fs_magic
!= FS_MAGIC
)
454 quit("bad sblock magic number\n");
455 dev_bsize
= sblock
->fs_fsize
/ fsbtodb(sblock
, 1);
456 dev_bshift
= ffs(dev_bsize
) - 1;
457 if (dev_bsize
!= (1 << dev_bshift
))
458 quit("dev_bsize (%d) is not a power of 2", dev_bsize
);
459 tp_bshift
= ffs(TP_BSIZE
) - 1;
460 if (TP_BSIZE
!= (1 << tp_bshift
))
461 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE
);
463 if (sblock
->fs_inodefmt
>= FS_44INODEFMT
)
464 spcl
.c_flags
|= DR_NEWINODEFMT
;
466 maxino
= sblock
->fs_ipg
* sblock
->fs_ncg
;
467 #endif /* __linux__ */
468 mapsize
= roundup(howmany(maxino
, NBBY
), TP_BSIZE
);
469 usedinomap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
470 dumpdirmap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
471 dumpinomap
= (char *)calloc((unsigned) mapsize
, sizeof(char));
472 tapesize
= 3 * (howmany(mapsize
* sizeof(char), TP_BSIZE
) + 1);
474 nonodump
= spcl
.c_level
< honorlevel
;
477 (void)signal(SIGINFO
, statussig
);
480 msg("mapping (Pass I) [regular files]\n");
482 if (directory
[0] == 0)
483 anydirskipped
= mapfiles(maxino
, &tapesize
);
485 anydirskipped
= mapfilesfromdir(maxino
, &tapesize
, directory
);
487 anydirskipped
= mapfiles(maxino
, &tapesize
);
490 msg("mapping (Pass II) [directories]\n");
491 while (anydirskipped
) {
492 anydirskipped
= mapdirs(maxino
, &tapesize
);
495 if (pipeout
|| unlimited
) {
496 tapesize
+= 10; /* 10 trailer blocks */
497 msg("estimated %ld tape blocks.\n", tapesize
);
502 fetapes
= (double) tapesize
/ blocksperfile
;
503 else if (cartridge
) {
504 /* Estimate number of tapes, assuming streaming stops at
505 the end of each block written, and not in mid-block.
506 Assume no erroneous blocks; this can be compensated
507 for with an artificially low tape size. */
509 ( (double) tapesize
/* blocks */
510 * TP_BSIZE
/* bytes/block */
511 * (1.0/density
) /* 0.1" / byte " */
513 (double) tapesize
/* blocks */
514 * (1.0/ntrec
) /* streaming-stops per block */
515 * 15.48 /* 0.1" / streaming-stop " */
516 ) * (1.0 / tsize
); /* tape / 0.1" " */
518 /* Estimate number of tapes, for old fashioned 9-track
520 int tenthsperirg
= (density
== 625) ? 3 : 7;
522 ( (double) tapesize
/* blocks */
523 * TP_BSIZE
/* bytes / block */
524 * (1.0/density
) /* 0.1" / byte " */
526 (double) tapesize
/* blocks */
527 * (1.0/ntrec
) /* IRG's / block */
528 * tenthsperirg
/* 0.1" / IRG " */
529 ) * (1.0 / tsize
); /* tape / 0.1" " */
531 etapes
= fetapes
; /* truncating assignment */
533 /* count the dumped inodes map on each additional tape */
534 tapesize
+= (etapes
- 1) *
535 (howmany(mapsize
* sizeof(char), TP_BSIZE
) + 1);
536 tapesize
+= etapes
+ 10; /* headers + 10 trailer blks */
537 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
542 * Allocate tape buffer.
546 "can't allocate tape buffers - try a smaller blocking factor.\n");
550 (void)time4(&(tstart_writing
));
552 (void)time((time_t *)&(tstart_writing
));
554 dumpmap(usedinomap
, TS_CLRI
, maxino
- 1);
556 msg("dumping (Pass III) [directories]\n");
557 dirty
= 0; /* XXX just to get gcc to shut up */
558 for (map
= dumpdirmap
, ino
= 1; ino
< maxino
; ino
++) {
559 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
563 if ((dirty
& 1) == 0)
566 * Skip directory inodes deleted and maybe reallocated
569 if ((dp
->di_mode
& IFMT
) != IFDIR
)
572 (void)dumpdirino(dp
, ino
);
574 (void)dumpino(dp
, ino
);
578 msg("dumping (Pass IV) [regular files]\n");
579 for (map
= dumpinomap
, ino
= 1; ino
< maxino
; ino
++) {
582 if (((ino
- 1) % NBBY
) == 0) /* map is offset by 1 */
586 if ((dirty
& 1) == 0)
589 * Skip inodes deleted and reallocated as directories.
592 mode
= dp
->di_mode
& IFMT
;
595 (void)dumpino(dp
, ino
);
599 (void)time4(&(tend_writing
));
601 (void)time((time_t *)&(tend_writing
));
603 spcl
.c_type
= TS_END
;
604 for (i
= 0; i
< ntrec
; i
++)
605 writeheader(maxino
- 1);
607 msg("DUMP: %ld tape blocks\n", spcl
.c_tapea
);
609 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
610 spcl
.c_tapea
, spcl
.c_volume
);
612 /* report dump performance, avoid division through zero */
613 if (tend_writing
- tstart_writing
== 0)
614 msg("finished in less than a second\n");
616 msg("finished in %d seconds, throughput %d KBytes/sec\n",
617 tend_writing
- tstart_writing
,
618 spcl
.c_tapea
/ (tend_writing
- tstart_writing
));
623 msg("DUMP: Date of this level %c dump: %s", level
,
624 spcl
.c_date
== 0 ? "the epoch\n" : ctime4(&spcl
.c_date
));
626 msg("DUMP: Date of this level %c dump: %s", level
,
627 spcl
.c_date
== 0 ? "the epoch\n" : ctime(&spcl
.c_date
));
629 msg("DUMP: Date this dump completed: %s", ctime(&tnow
));
631 msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate
/ tapeno
);
634 broadcast("DUMP IS DONE!\7\7\n");
635 msg("DUMP IS DONE\n");
638 return 0; /* gcc - shut up */
644 char white
[MAXPATHLEN
];
647 strncpy(white
, __progname
, MAXPATHLEN
-1);
648 white
[MAXPATHLEN
-1] = '\0';
649 for (i
=0; i
<MAXPATHLEN
; ++i
)
650 if (white
[i
] != '\0') white
[i
] = ' ';
653 "%s %s\n", __progname
, _DUMP_VERSION
);
655 "usage:\t%s [-0123456789ac"
659 "nu] [-B records] [-b blocksize] [-d density]\n"
660 "\t%s [-f file] [-h level] [-s feet] [-T date] filesystem\n"
661 "\t%s [-W | -w]\n", __progname
, white
, __progname
);
666 * Pick up a numeric argument. It must be nonnegative and in the given
667 * range (except that a vmax of 0 means unlimited).
670 numarg(const char *meaning
, long vmin
, long vmax
)
675 val
= strtol(optarg
, &p
, 10);
677 errx(X_STARTUP
, "illegal %s -- %s", meaning
, optarg
);
678 if (val
< vmin
|| (vmax
&& val
> vmax
))
679 errx(X_STARTUP
, "%s must be between %ld and %ld", meaning
, vmin
, vmax
);
694 quit("Signal on pipe: cannot recover\n");
695 msg("Rewriting attempted as response to unknown signal.\n");
696 (void)fflush(stderr
);
697 (void)fflush(stdout
);
702 msg("SIGSEGV: ABORTING!\n");
703 (void)signal(SIGSEGV
, SIG_DFL
);
704 (void)kill(0, SIGSEGV
);
714 #else /* __linux__ */
715 static char rawbuf
[MAXPATHLEN
];
716 char *dp
= strrchr(cp
, '/');
721 (void)strncpy(rawbuf
, cp
, MAXPATHLEN
- 1);
722 rawbuf
[MAXPATHLEN
-1] = '\0';
724 (void)strncat(rawbuf
, "/r", MAXPATHLEN
- 1 - strlen(rawbuf
));
725 (void)strncat(rawbuf
, dp
+ 1, MAXPATHLEN
- 1 - strlen(rawbuf
));
727 #endif /* __linux__ */
732 * Change set of key letters and ordered arguments into something
733 * getopt(3) will like.
736 obsolete(int *argcp
, char **argvp
[])
739 char *ap
, **argv
, *flagsp
=NULL
, **nargv
, *p
=NULL
;
745 /* Return if no arguments or first argument has leading dash. */
747 if (argc
== 1 || *ap
== '-')
750 /* Allocate space for new arguments. */
751 if ((*argvp
= nargv
= malloc((argc
+ 1) * sizeof(char *))) == NULL
||
752 (p
= flagsp
= malloc(strlen(ap
) + 2)) == NULL
)
753 err(X_STARTUP
, "malloc new args");
758 for (flags
= 0; *ap
; ++ap
) {
768 warnx("option requires an argument -- %c", *ap
);
771 if ((nargv
[0] = malloc(strlen(*argv
) + 2 + 1)) == NULL
)
772 err(X_STARTUP
, "malloc arg");
775 (void)strcpy(&nargv
[0][2], *argv
);
789 /* Terminate flags. */
795 /* Copy remaining arguments. */
796 while ((*nargv
++ = *argv
++));
798 /* Update argument count. */
799 *argcp
= nargv
- *argvp
- 1;