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QFA support.
[dump.git] / dump / main.c
1 /*
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> - Alcôve <www.alcove.fr>, 2000
7 */
8
9 /*-
10 * Copyright (c) 1980, 1991, 1993, 1994
11 * The Regents of the University of California. All rights reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
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.
28 *
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
39 * SUCH DAMAGE.
40 */
41
42 #ifndef lint
43 static const char rcsid[] =
44 "$Id: main.c,v 1.42 2001/04/10 12:46:53 stelian Exp $";
45 #endif /* not lint */
46
47 #include <config.h>
48 #include <ctype.h>
49 #include <compaterr.h>
50 #include <fcntl.h>
51 #include <fstab.h>
52 #include <signal.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <unistd.h>
57
58 #include <sys/param.h>
59 #include <sys/time.h>
60 #ifdef __linux__
61 #include <linux/ext2_fs.h>
62 #include <ext2fs/ext2fs.h>
63 #include <time.h>
64 #include <sys/stat.h>
65 #include <bsdcompat.h>
66 #elif defined sunos
67 #include <sys/vnode.h>
68
69 #include <ufs/inode.h>
70 #include <ufs/fs.h>
71 #else
72 #include <ufs/ufs/dinode.h>
73 #include <ufs/ffs/fs.h>
74 #endif
75
76 #include <protocols/dumprestore.h>
77
78 #include "dump.h"
79 #include "pathnames.h"
80 #include "bylabel.h"
81
82 #ifndef SBOFF
83 #define SBOFF (SBLOCK * DEV_BSIZE)
84 #endif
85
86 int notify = 0; /* notify operator flag */
87 int blockswritten = 0; /* number of blocks written on current tape */
88 int tapeno = 0; /* current tape number */
89 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
90 int ntrec = NTREC; /* # tape blocks in each tape record */
91 int cartridge = 0; /* Assume non-cartridge tape */
92 #ifdef USE_QFA
93 int tapepos = 0; /* assume no QFA tapeposition needed by user */
94 #endif /* USA_QFA */
95 int dokerberos = 0; /* Use Kerberos authentication */
96 long dev_bsize = 1; /* recalculated below */
97 long blocksperfile; /* output blocks per file */
98 char *host = NULL; /* remote host (if any) */
99 int sizest = 0; /* return size estimate only */
100 int compressed = 0; /* use zlib to compress the output, compress level 1-9 */
101 long long bytes_written = 0; /* total bytes written */
102 long uncomprblks = 0;/* uncompressed blocks written */
103
104 #ifdef __linux__
105 char *__progname;
106 #endif
107
108 int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */
109 static long numarg __P((const char *, long, long));
110 static void obsolete __P((int *, char **[]));
111 static void usage __P((void));
112
113 dump_ino_t iexclude_list[IEXCLUDE_MAXNUM];/* the inode exclude list */
114 int iexclude_num = 0; /* number of elements in the list */
115
116 int
117 main(int argc, char *argv[])
118 {
119 register dump_ino_t ino;
120 register int dirty;
121 register struct dinode *dp;
122 register struct fstab *dt;
123 register char *map;
124 register int ch;
125 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
126 dump_ino_t maxino;
127 #ifdef __linux__
128 errcode_t retval;
129 char directory[MAXPATHLEN];
130 char pathname[MAXPATHLEN];
131 #endif
132 time_t tnow;
133 char *diskparam;
134
135 spcl.c_label[0] = '\0';
136 spcl.c_date = time(NULL);
137
138 #ifdef __linux__
139 __progname = argv[0];
140 directory[0] = 0;
141 initialize_ext2_error_table();
142 #endif
143
144 tsize = 0; /* Default later, based on 'c' option for cart tapes */
145 unlimited = 1;
146 eot_script = NULL;
147 if ((tapeprefix = getenv("TAPE")) == NULL)
148 tapeprefix = _PATH_DEFTAPE;
149 dumpdates = _PATH_DUMPDATES;
150 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
151 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
152 level = '0';
153
154 if (argc < 2)
155 usage();
156
157 obsolete(&argc, &argv);
158
159 #ifdef USE_QFA
160 gTapeposfd = -1;
161 #endif /* USA_QFA */
162
163 while ((ch = getopt(argc, argv,
164 "0123456789aB:b:cd:e:f:F:h:L:"
165 #ifdef KERBEROS
166 "k"
167 #endif
168 "Mn"
169 #ifdef USE_QFA
170 "Q:"
171 #endif
172 "s:ST:uWw"
173 #ifdef HAVE_ZLIB
174 "z::"
175 #endif
176 )) != -1)
177 switch (ch) {
178 /* dump level */
179 case '0': case '1': case '2': case '3': case '4':
180 case '5': case '6': case '7': case '8': case '9':
181 level = ch;
182 break;
183
184 case 'a': /* `auto-size', Write to EOM. */
185 unlimited = 1;
186 break;
187
188 case 'B': /* blocks per output file */
189 unlimited = 0;
190 blocksperfile = numarg("number of blocks per file",
191 1L, 0L);
192 break;
193
194 case 'b': /* blocks per tape write */
195 ntrec = numarg("number of blocks per write",
196 1L, 1000L);
197 if (ntrec > maxbsize/1024) {
198 msg("Please choose a blocksize <= %dkB\n",
199 maxbsize/1024);
200 exit(X_STARTUP);
201 }
202 bflag = 1;
203 break;
204
205 case 'c': /* Tape is cart. not 9-track */
206 unlimited = 0;
207 cartridge = 1;
208 break;
209
210 case 'd': /* density, in bits per inch */
211 unlimited = 0;
212 density = numarg("density", 10L, 327670L) / 10;
213 if (density >= 625 && !bflag)
214 ntrec = HIGHDENSITYTREC;
215 break;
216
217 /* 04-Feb-00 ILC */
218 case 'e': /* exclude an inode */
219 if (iexclude_num == IEXCLUDE_MAXNUM) {
220 (void)fprintf(stderr, "Too many -e options\n");
221 exit(X_STARTUP);
222 }
223 iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
224 if (iexclude_list[iexclude_num-1] <= ROOTINO) {
225 (void)fprintf(stderr, "Cannot exclude inode %ld\n", (long)iexclude_list[iexclude_num-1]);
226 exit(X_STARTUP);
227 }
228 msg("Added %d to exclude list\n",
229 iexclude_list[iexclude_num-1]);
230 break;
231
232 case 'f': /* output file */
233 tapeprefix = optarg;
234 break;
235
236 case 'F': /* end of tape script */
237 eot_script = optarg;
238 break;
239
240 case 'h':
241 honorlevel = numarg("honor level", 0L, 10L);
242 break;
243
244 #ifdef KERBEROS
245 case 'k':
246 dokerberos = 1;
247 break;
248 #endif
249
250 case 'L':
251 /*
252 * Note that although there are LBLSIZE characters,
253 * the last must be '\0', so the limit on strlen()
254 * is really LBLSIZE-1.
255 */
256 strncpy(spcl.c_label, optarg, LBLSIZE);
257 spcl.c_label[LBLSIZE-1] = '\0';
258 if (strlen(optarg) > LBLSIZE-1) {
259 msg(
260 "WARNING Label `%s' is larger than limit of %d characters.\n",
261 optarg, LBLSIZE-1);
262 msg("WARNING: Using truncated label `%s'.\n",
263 spcl.c_label);
264 }
265 break;
266
267 case 'M': /* multi-volume flag */
268 Mflag = 1;
269 break;
270
271 case 'n': /* notify operators */
272 notify = 1;
273 break;
274
275 #ifdef USE_QFA
276 case 'Q': /* create tapeposfile */
277 gTapeposfile = optarg;
278 tapepos = 1;
279 break;
280 #endif /* USA_QFA */
281
282 case 's': /* tape size, feet */
283 unlimited = 0;
284 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
285 break;
286
287 case 'S':
288 sizest = 1; /* return size estimate only */
289 break;
290
291 case 'T': /* time of last dump */
292 spcl.c_ddate = unctime(optarg);
293 if (spcl.c_ddate < 0) {
294 (void)fprintf(stderr, "bad time \"%s\"\n",
295 optarg);
296 exit(X_STARTUP);
297 }
298 Tflag = 1;
299 lastlevel = '?';
300 break;
301
302 case 'u': /* update dumpdates */
303 uflag = 1;
304 break;
305
306 case 'W': /* what to do */
307 case 'w':
308 lastdump(ch);
309 exit(X_FINOK); /* do nothing else */
310 #ifdef HAVE_ZLIB
311 case 'z':
312 compressed = 2;
313 if (optarg)
314 compressed = numarg("compress level", 1L, 9L);
315 break;
316 #endif /* HAVE_ZLIB */
317
318 default:
319 usage();
320 }
321 argc -= optind;
322 argv += optind;
323
324 if (argc < 1) {
325 (void)fprintf(stderr, "Must specify disk or filesystem\n");
326 exit(X_STARTUP);
327 }
328 diskparam = *argv++;
329 if (strlen(diskparam) >= MAXPATHLEN) {
330 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n",
331 diskparam);
332 exit(X_STARTUP);
333 }
334 argc--;
335 if (argc >= 1) {
336 (void)fprintf(stderr, "Unknown arguments to dump:");
337 while (argc--)
338 (void)fprintf(stderr, " %s", *argv++);
339 (void)fprintf(stderr, "\n");
340 exit(X_STARTUP);
341 }
342 if (Tflag && uflag) {
343 (void)fprintf(stderr,
344 "You cannot use the T and u flags together.\n");
345 exit(X_STARTUP);
346 }
347 if (strcmp(tapeprefix, "-") == 0) {
348 pipeout++;
349 tapeprefix = "standard output";
350 }
351
352 if (blocksperfile)
353 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
354 else if (!unlimited) {
355 /*
356 * Determine how to default tape size and density
357 *
358 * density tape size
359 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
360 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
361 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
362 * (450*4 - slop)
363 * hilit19 hits again: "
364 */
365 if (density == 0)
366 density = cartridge ? 100 : 160;
367 if (tsize == 0)
368 tsize = cartridge ? 1700L*120L : 2300L*120L;
369 }
370
371 if (strchr(tapeprefix, ':')) {
372 host = tapeprefix;
373 tapeprefix = strchr(host, ':');
374 *tapeprefix++ = '\0';
375 #ifdef RDUMP
376 if (index(tapeprefix, '\n')) {
377 (void)fprintf(stderr, "invalid characters in tape\n");
378 exit(X_STARTUP);
379 }
380 if (rmthost(host) == 0)
381 exit(X_STARTUP);
382 #else
383 (void)fprintf(stderr, "remote dump not enabled\n");
384 exit(X_STARTUP);
385 #endif
386 }
387 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
388
389 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
390 signal(SIGHUP, sig);
391 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
392 signal(SIGTRAP, sig);
393 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
394 signal(SIGFPE, sig);
395 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
396 signal(SIGBUS, sig);
397 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
398 signal(SIGSEGV, sig);
399 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
400 signal(SIGTERM, sig);
401 if (signal(SIGINT, interrupt) == SIG_IGN)
402 signal(SIGINT, SIG_IGN);
403 set_operators(); /* /etc/group snarfed */
404 getfstab(); /* /etc/fstab snarfed */
405
406 /*
407 * disk may end in / and this can confuse
408 * fstabsearch.
409 */
410 i = strlen(diskparam) - 1;
411 if (i > 1 && diskparam[i] == '/')
412 diskparam[i] = '\0';
413
414 disk = get_device_name(diskparam);
415 if (!disk) { /* null means the disk is some form
416 of LABEL= or UID= but it was not
417 found */
418 msg("Cannot find a disk having %s\n", diskparam);
419 exit(X_STARTUP);
420 }
421 /*
422 * disk can be either the full special file name,
423 * the suffix of the special file name,
424 * the special name missing the leading '/',
425 * the file system name with or without the leading '/'.
426 */
427 if ((dt = fstabsearch(disk)) != NULL) {
428 disk = rawname(dt->fs_spec);
429 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
430 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
431 } else {
432 #ifdef __linux__
433 #ifdef HAVE_REALPATH
434 if (realpath(disk, pathname) == NULL)
435 #endif
436 strcpy(pathname, disk);
437 /*
438 * The argument could be now a mountpoint of
439 * a filesystem specified in fstab. Search for it.
440 */
441 if ((dt = fstabsearch(pathname)) != NULL) {
442 disk = rawname(dt->fs_spec);
443 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
444 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
445 } else {
446 /*
447 * The argument was not found in the fstab
448 * assume that this is a subtree and search for it
449 */
450 dt = fstabsearchdir(pathname, directory);
451 if (dt != NULL) {
452 char name[MAXPATHLEN];
453 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
454 (void)snprintf(name, sizeof(name), "%s (dir %s)",
455 dt->fs_file, directory);
456 (void)strncpy(spcl.c_filesys, name, NAMELEN);
457 disk = rawname(dt->fs_spec);
458 } else {
459 (void)strncpy(spcl.c_dev, disk, NAMELEN);
460 (void)strncpy(spcl.c_filesys, "an unlisted file system",
461 NAMELEN);
462 }
463 }
464 #else
465 (void)strncpy(spcl.c_dev, disk, NAMELEN);
466 (void)strncpy(spcl.c_filesys, "an unlisted file system",
467 NAMELEN);
468 #endif
469 }
470
471 if (directory[0] != 0) {
472 if (level != '0') {
473 (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
474 exit(X_STARTUP);
475 }
476 if (uflag) {
477 (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
478 exit(X_STARTUP);
479 }
480 }
481 spcl.c_dev[NAMELEN-1] = '\0';
482 spcl.c_filesys[NAMELEN-1] = '\0';
483 (void)gethostname(spcl.c_host, NAMELEN);
484 spcl.c_host[NAMELEN-1] = '\0';
485 spcl.c_level = level - '0';
486 spcl.c_type = TS_TAPE;
487 if (!Tflag)
488 getdumptime(uflag); /* dumpdates snarfed */
489
490 if (spcl.c_ddate == 0 && spcl.c_level) {
491 msg("WARNING: There is no inferior level dump on this filesystem\n");
492 msg("WARNING: Assuming a level 0 dump by default\n");
493 level = '0';
494 spcl.c_level = 0;
495 }
496
497 if (Mflag)
498 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
499 else
500 strncpy(tape, tapeprefix, MAXPATHLEN);
501 tape[MAXPATHLEN - 1] = '\0';
502
503 if (!sizest) {
504
505 msg("Date of this level %c dump: %s", level,
506 ctime4(&spcl.c_date));
507 if (spcl.c_ddate)
508 msg("Date of last level %c dump: %s", lastlevel,
509 ctime4(&spcl.c_ddate));
510 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
511 if (host)
512 msgtail("to %s on host %s\n", tape, host);
513 else
514 msgtail("to %s\n", tape);
515 } /* end of size estimate */
516
517 #ifdef __linux__
518 retval = dump_fs_open(disk, &fs);
519 if (retval) {
520 com_err(disk, retval, "while opening filesystem");
521 if (retval == EXT2_ET_REV_TOO_HIGH)
522 printf ("Get a newer version of dump!\n");
523 exit(X_STARTUP);
524 }
525 if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
526 com_err(disk, retval, "while opening filesystem");
527 printf ("Get a newer version of dump!\n");
528 exit(X_STARTUP);
529 }
530 if ((diskfd = open(disk, O_RDONLY)) < 0) {
531 msg("Cannot open %s\n", disk);
532 exit(X_STARTUP);
533 }
534 /* if no user label specified, use ext2 filesystem label if available */
535 if (spcl.c_label[0] == '\0') {
536 const char *lbl;
537 if ( (lbl = get_device_label(disk)) != NULL) {
538 strncpy(spcl.c_label, lbl, LBLSIZE);
539 spcl.c_label[LBLSIZE-1] = '\0';
540 }
541 else
542 strcpy(spcl.c_label, "none"); /* safe strcpy. */
543 }
544 sync();
545 dev_bsize = DEV_BSIZE;
546 dev_bshift = ffs(dev_bsize) - 1;
547 if (dev_bsize != (1 << dev_bshift))
548 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
549 tp_bshift = ffs(TP_BSIZE) - 1;
550 if (TP_BSIZE != (1 << tp_bshift))
551 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
552 maxino = fs->super->s_inodes_count;
553 #if 0
554 spcl.c_flags |= DR_NEWINODEFMT;
555 #endif
556 #else /* __linux __*/
557 if ((diskfd = open(disk, O_RDONLY)) < 0) {
558 msg("Cannot open %s\n", disk);
559 exit(X_STARTUP);
560 }
561 sync();
562 sblock = (struct fs *)sblock_buf;
563 bread(SBOFF, (char *) sblock, SBSIZE);
564 if (sblock->fs_magic != FS_MAGIC)
565 quit("bad sblock magic number\n");
566 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
567 dev_bshift = ffs(dev_bsize) - 1;
568 if (dev_bsize != (1 << dev_bshift))
569 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
570 tp_bshift = ffs(TP_BSIZE) - 1;
571 if (TP_BSIZE != (1 << tp_bshift))
572 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
573 #ifdef FS_44INODEFMT
574 if (sblock->fs_inodefmt >= FS_44INODEFMT)
575 spcl.c_flags |= DR_NEWINODEFMT;
576 #endif
577 maxino = sblock->fs_ipg * sblock->fs_ncg;
578 #endif /* __linux__ */
579 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
580 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
581 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
582 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
583 if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
584 quit("out of memory allocating inode maps\n");
585 tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
586
587 nonodump = spcl.c_level < honorlevel;
588
589 msg("Label: %s\n", spcl.c_label);
590
591 if (compressed)
592 msg("Compressing output at compression level %d\n", compressed);
593
594 #if defined(SIGINFO)
595 (void)signal(SIGINFO, statussig);
596 #endif
597
598 if (!sizest)
599 msg("mapping (Pass I) [regular files]\n");
600 #ifdef __linux__
601 if (directory[0] == 0)
602 anydirskipped = mapfiles(maxino, &tapesize);
603 else
604 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
605 #else
606 anydirskipped = mapfiles(maxino, &tapesize);
607 #endif
608
609 if (!sizest)
610 msg("mapping (Pass II) [directories]\n");
611 while (anydirskipped) {
612 anydirskipped = mapdirs(maxino, &tapesize);
613 }
614
615 if (sizest) {
616 printf("%.0f\n", ((double)tapesize + 1 + ntrec) * TP_BSIZE);
617 exit(X_FINOK);
618 } /* stop here for size estimate */
619
620 if (pipeout || unlimited) {
621 tapesize += 1 + ntrec; /* 1 map header + trailer blocks */
622 msg("estimated %ld tape blocks.\n", tapesize);
623 } else {
624 double fetapes;
625
626 if (blocksperfile)
627 fetapes = (double) tapesize / blocksperfile;
628 else if (cartridge) {
629 /* Estimate number of tapes, assuming streaming stops at
630 the end of each block written, and not in mid-block.
631 Assume no erroneous blocks; this can be compensated
632 for with an artificially low tape size. */
633 fetapes =
634 ( (double) tapesize /* blocks */
635 * TP_BSIZE /* bytes/block */
636 * (1.0/density) /* 0.1" / byte " */
637 +
638 (double) tapesize /* blocks */
639 * (1.0/ntrec) /* streaming-stops per block */
640 * 15.48 /* 0.1" / streaming-stop " */
641 ) * (1.0 / tsize ); /* tape / 0.1" " */
642 } else {
643 /* Estimate number of tapes, for old fashioned 9-track
644 tape */
645 int tenthsperirg = (density == 625) ? 3 : 7;
646 fetapes =
647 ( (double) tapesize /* blocks */
648 * TP_BSIZE /* bytes / block */
649 * (1.0/density) /* 0.1" / byte " */
650 +
651 (double) tapesize /* blocks */
652 * (1.0/ntrec) /* IRG's / block */
653 * tenthsperirg /* 0.1" / IRG " */
654 ) * (1.0 / tsize ); /* tape / 0.1" " */
655 }
656 etapes = fetapes; /* truncating assignment */
657 etapes++;
658 /* count the dumped inodes map on each additional tape */
659 tapesize += (etapes - 1) *
660 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
661 tapesize += etapes + ntrec; /* headers + trailer blks */
662 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
663 tapesize, fetapes);
664 }
665
666 #ifdef USE_QFA
667 if (tapepos) {
668 msg("writing QFA positions to %s\n", gTapeposfile);
669 if ((gTapeposfd = open(gTapeposfile, O_RDWR|O_CREAT)) < 0)
670 quit("can't open tapeposfile\n");
671 /* print QFA-file header */
672 sprintf(gTps, "%s\n%s\n%ld\n\n", QFA_MAGIC, QFA_VERSION, (unsigned long)spcl.c_date);
673 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
674 quit("can't write tapeposfile\n");
675 sprintf(gTps, "ino\ttapeno\ttapepos\n");
676 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
677 quit("can't write tapeposfile\n");
678 }
679 #endif /* USE_QFA */
680
681 /*
682 * Allocate tape buffer.
683 */
684 if (!alloctape())
685 quit(
686 "can't allocate tape buffers - try a smaller blocking factor.\n");
687
688 startnewtape(1);
689 tstart_writing = time(NULL);
690 dumpmap(usedinomap, TS_CLRI, maxino - 1);
691
692 msg("dumping (Pass III) [directories]\n");
693 dirty = 0; /* XXX just to get gcc to shut up */
694 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
695 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
696 dirty = *map++;
697 else
698 dirty >>= 1;
699 if ((dirty & 1) == 0)
700 continue;
701 /*
702 * Skip directory inodes deleted and maybe reallocated
703 */
704 dp = getino(ino);
705 if ((dp->di_mode & IFMT) != IFDIR)
706 continue;
707 #ifdef __linux__
708 /*
709 * Skip directory inodes deleted and not yes reallocated...
710 */
711 if (dp->di_nlink == 0 || dp->di_dtime != 0)
712 continue;
713 (void)dumpdirino(dp, ino);
714 #else
715 (void)dumpino(dp, ino);
716 #endif
717 }
718
719 msg("dumping (Pass IV) [regular files]\n");
720 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
721 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
722 dirty = *map++;
723 else
724 dirty >>= 1;
725 if ((dirty & 1) == 0)
726 continue;
727 /*
728 * Skip inodes deleted and reallocated as directories.
729 */
730 dp = getino(ino);
731 if ((dp->di_mode & IFMT) == IFDIR)
732 continue;
733 #ifdef __linux__
734 /*
735 * No need to check here for deleted and not yet reallocated
736 * inodes since this is done in dumpino().
737 */
738 #endif
739 (void)dumpino(dp, ino);
740 }
741
742 tend_writing = time(NULL);
743 spcl.c_type = TS_END;
744 /*
745 * Finish off the current tape record with trailer blocks, to ensure
746 * at least the data in the last partial record makes it to tape.
747 * Also make sure we write at least 1 trailer block.
748 */
749 for (i = ntrec - (spcl.c_tapea % ntrec); i; --i)
750 writeheader(maxino - 1);
751
752 tnow = trewind();
753
754 if (pipeout)
755 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
756 ((double)spcl.c_tapea * TP_BSIZE / 1048576));
757 else
758 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
759 spcl.c_tapea,
760 ((double)spcl.c_tapea * TP_BSIZE / 1048576),
761 spcl.c_volume);
762
763 /* report dump performance, avoid division by zero */
764 if (tend_writing - tstart_writing == 0)
765 msg("finished in less than a second\n");
766 else
767 msg("finished in %d seconds, throughput %d kBytes/sec\n",
768 tend_writing - tstart_writing,
769 spcl.c_tapea / (tend_writing - tstart_writing));
770
771 putdumptime();
772 msg("Date of this level %c dump: %s", level,
773 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
774 msg("Date this dump completed: %s", ctime(&tnow));
775
776 msg("Average transfer rate: %ld kB/s\n", xferrate / tapeno);
777 if (compressed) {
778 long tapekb = bytes_written / 1024;
779 double rate = .0005 + (double) spcl.c_tapea / tapekb;
780 msg("Wrote %ldkB uncompressed, %ldkB compressed, %1.3f:1\n",
781 spcl.c_tapea, tapekb, rate);
782 }
783
784 broadcast("DUMP IS DONE!\7\7\n");
785 msg("DUMP IS DONE\n");
786 Exit(X_FINOK);
787 /* NOTREACHED */
788 return 0; /* gcc - shut up */
789 }
790
791 static void
792 usage(void)
793 {
794 char white[MAXPATHLEN];
795 const char *ext2ver, *ext2date;
796
797 memset(white, ' ', MAXPATHLEN);
798 white[MIN(strlen(__progname), MAXPATHLEN - 1)] = '\0';
799
800 #ifdef __linux__
801 ext2fs_get_library_version(&ext2ver, &ext2date);
802 fprintf(stderr, "%s %s (using libext2fs %s of %s)\n",
803 __progname, _DUMP_VERSION, ext2ver, ext2date);
804 #else
805 fprintf(stderr, "%s %s\n", __progname, _DUMP_VERSION);
806 #endif
807 fprintf(stderr,
808 "usage:\t%s [-0123456789ac"
809 #ifdef KERBEROS
810 "k"
811 #endif
812 "MnSu"
813 "] [-B records] [-b blocksize] [-d density]\n"
814 "\t%s [-e inode#] [-f file] [-h level] "
815 #ifdef USE_QFA
816 "[-Q file] "
817 #endif
818 "[-s feet]\n"
819 "\t%s [-T date] "
820 #ifdef HAVE_ZLIB
821 "[-z zlevel] "
822 #endif
823 "filesystem\n"
824 "\t%s [-W | -w]\n",
825 __progname, white, white, __progname);
826 exit(X_STARTUP);
827 }
828
829 /*
830 * Pick up a numeric argument. It must be nonnegative and in the given
831 * range (except that a vmax of 0 means unlimited).
832 */
833 static long
834 numarg(const char *meaning, long vmin, long vmax)
835 {
836 char *p;
837 long val;
838
839 val = strtol(optarg, &p, 10);
840 if (*p)
841 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
842 if (val < vmin || (vmax && val > vmax))
843 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
844 return (val);
845 }
846
847 void
848 sig(int signo)
849 {
850 switch(signo) {
851 case SIGALRM:
852 case SIGBUS:
853 case SIGFPE:
854 case SIGHUP:
855 case SIGTERM:
856 case SIGTRAP:
857 if (pipeout)
858 quit("Signal on pipe: cannot recover\n");
859 msg("Rewriting attempted as response to unknown signal.\n");
860 (void)fflush(stderr);
861 (void)fflush(stdout);
862 close_rewind();
863 exit(X_REWRITE);
864 /* NOTREACHED */
865 case SIGSEGV:
866 msg("SIGSEGV: ABORTING!\n");
867 (void)signal(SIGSEGV, SIG_DFL);
868 (void)kill(0, SIGSEGV);
869 /* NOTREACHED */
870 }
871 }
872
873 const char *
874 rawname(const char *cp)
875 {
876 #ifdef __linux__
877 return cp;
878 #else /* __linux__ */
879 static char rawbuf[MAXPATHLEN];
880 char *dp = strrchr(cp, '/');
881
882 if (dp == NULL)
883 return (NULL);
884 (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
885 rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
886 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
887 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
888 return (rawbuf);
889 #endif /* __linux__ */
890 }
891
892 /*
893 * obsolete --
894 * Change set of key letters and ordered arguments into something
895 * getopt(3) will like.
896 */
897 static void
898 obsolete(int *argcp, char **argvp[])
899 {
900 int argc, flags;
901 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
902
903 /* Setup. */
904 argv = *argvp;
905 argc = *argcp;
906
907 /* Return if no arguments or first argument has leading dash. */
908 ap = argv[1];
909 if (argc == 1 || *ap == '-')
910 return;
911
912 /* Allocate space for new arguments. */
913 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
914 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
915 err(X_STARTUP, "malloc new args");
916
917 *nargv++ = *argv;
918 argv += 2;
919
920 for (flags = 0; *ap; ++ap) {
921 switch (*ap) {
922 case 'B':
923 case 'b':
924 case 'd':
925 case 'e':
926 case 'f':
927 case 'F':
928 case 'h':
929 case 'L':
930 case 'Q':
931 case 's':
932 case 'T':
933 if (*argv == NULL) {
934 warnx("option requires an argument -- %c", *ap);
935 usage();
936 }
937 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
938 err(X_STARTUP, "malloc arg");
939 nargv[0][0] = '-';
940 nargv[0][1] = *ap;
941 (void)strcpy(&nargv[0][2], *argv);
942 ++argv;
943 ++nargv;
944 break;
945 default:
946 if (!flags) {
947 *p++ = '-';
948 flags = 1;
949 }
950 *p++ = *ap;
951 break;
952 }
953 }
954
955 /* Terminate flags. */
956 if (flags) {
957 *p = '\0';
958 *nargv++ = flagsp;
959 }
960
961 /* Copy remaining arguments. */
962 while ((*nargv++ = *argv++));
963
964 /* Update argument count. */
965 *argcp = nargv - *argvp - 1;
966 }
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