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[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 1.33 2001/02/21 16:13:05 stelian Exp $";
45 #endif /* not lint */
46
47 #include <config.h>
48 #include <sys/param.h>
49 #include <sys/time.h>
50 #ifdef __linux__
51 #include <linux/ext2_fs.h>
52 #include <sys/stat.h>
53 #include <bsdcompat.h>
54 #else
55 #ifdef sunos
56 #include <sys/vnode.h>
57
58 #include <ufs/inode.h>
59 #include <ufs/fs.h>
60 #else
61 #include <ufs/ufs/dinode.h>
62 #include <ufs/ffs/fs.h>
63 #endif
64 #endif
65
66 #include <protocols/dumprestore.h>
67
68 #include <ctype.h>
69 #include <compaterr.h>
70 #include <fcntl.h>
71 #include <fstab.h>
72 #include <signal.h>
73 #include <stdio.h>
74 #include <stdlib.h>
75 #include <string.h>
76 #include <unistd.h>
77
78 #ifdef __linux__
79 #include <ext2fs/ext2fs.h>
80 #endif
81
82 #include "dump.h"
83 #include "pathnames.h"
84 #include "bylabel.h"
85
86 #ifndef SBOFF
87 #define SBOFF (SBLOCK * DEV_BSIZE)
88 #endif
89
90 int notify = 0; /* notify operator flag */
91 int blockswritten = 0; /* number of blocks written on current tape */
92 int tapeno = 0; /* current tape number */
93 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
94 int ntrec = NTREC; /* # tape blocks in each tape record */
95 int cartridge = 0; /* Assume non-cartridge tape */
96 int dokerberos = 0; /* Use Kerberos authentication */
97 long dev_bsize = 1; /* recalculated below */
98 long blocksperfile; /* output blocks per file */
99 char *host = NULL; /* remote host (if any) */
100 int sizest = 0; /* return size estimate only */
101 int compressed = 0; /* use zlib to compress the output */
102 long long bytes_written = 0; /* total bytes written */
103 long uncomprblks = 0;/* uncompressed blocks written */
104
105 #ifdef __linux__
106 char *__progname;
107 #endif
108
109 int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */
110 static long numarg __P((const char *, long, long));
111 static void obsolete __P((int *, char **[]));
112 static void usage __P((void));
113
114 ino_t iexclude_list[IEXCLUDE_MAXNUM]; /* the inode exclude list */
115 int iexclude_num = 0; /* number of elements in the list */
116
117 int
118 main(int argc, char *argv[])
119 {
120 register ino_t ino;
121 register int dirty;
122 register struct dinode *dp;
123 register struct fstab *dt;
124 register char *map;
125 register int ch;
126 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
127 ino_t maxino;
128 #ifdef __linux__
129 errcode_t retval;
130 char directory[MAXPATHLEN];
131 char pathname[MAXPATHLEN];
132 #endif
133 time_t tnow;
134 char *diskparam;
135
136 spcl.c_label[0] = '\0';
137 spcl.c_date = 0;
138 #ifdef __linux__
139 (void)time4(&spcl.c_date);
140 #else
141 (void)time((time_t *)&spcl.c_date);
142 #endif
143
144 #ifdef __linux__
145 __progname = argv[0];
146 directory[0] = 0;
147 initialize_ext2_error_table();
148 #endif
149
150 tsize = 0; /* Default later, based on 'c' option for cart tapes */
151 unlimited = 1;
152 eot_script = NULL;
153 if ((tapeprefix = getenv("TAPE")) == NULL)
154 tapeprefix = _PATH_DEFTAPE;
155 dumpdates = _PATH_DUMPDATES;
156 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
157 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
158 level = '0';
159
160 if (argc < 2)
161 usage();
162
163 obsolete(&argc, &argv);
164 #ifdef KERBEROS
165 #ifdef HAVE_ZLIB
166 #define optstring "0123456789aB:b:cd:e:f:F:h:kL:Mns:ST:uWwz"
167 #else
168 #define optstring "0123456789aB:b:cd:e:f:F:h:kL:Mns:ST:uWw"
169 #endif /* HAVE_ZLIB */
170 #else
171 #ifdef HAVE_ZLIB
172 #define optstring "0123456789aB:b:cd:e:f:F:h:L:Mns:ST:uWwz"
173 #else
174 #define optstring "0123456789aB:b:cd:e:f:F:h:L:Mns:ST:uWw"
175 #endif /* HAVE_ZLIB */
176 #endif /* KERBEROS */
177 while ((ch = getopt(argc, argv, optstring)) != -1)
178 #undef optstring
179 switch (ch) {
180 /* dump level */
181 case '0': case '1': case '2': case '3': case '4':
182 case '5': case '6': case '7': case '8': case '9':
183 level = ch;
184 break;
185
186 case 'a': /* `auto-size', Write to EOM. */
187 unlimited = 1;
188 break;
189
190 case 'B': /* blocks per output file */
191 unlimited = 0;
192 blocksperfile = numarg("number of blocks per file",
193 1L, 0L);
194 break;
195
196 case 'b': /* blocks per tape write */
197 ntrec = numarg("number of blocks per write",
198 1L, 1000L);
199 if (ntrec > maxbsize/1024) {
200 msg("Please choose a blocksize <= %dKB\n",
201 maxbsize/1024);
202 exit(X_STARTUP);
203 }
204 bflag = 1;
205 break;
206
207 case 'c': /* Tape is cart. not 9-track */
208 unlimited = 0;
209 cartridge = 1;
210 break;
211
212 case 'd': /* density, in bits per inch */
213 unlimited = 0;
214 density = numarg("density", 10L, 327670L) / 10;
215 if (density >= 625 && !bflag)
216 ntrec = HIGHDENSITYTREC;
217 break;
218
219 /* 04-Feb-00 ILC */
220 case 'e': /* exclude an inode */
221 if (iexclude_num == IEXCLUDE_MAXNUM) {
222 (void)fprintf(stderr, "Too many -e options\n");
223 exit(X_STARTUP);
224 }
225 iexclude_list[iexclude_num++] = numarg("inode to exclude",0L,0L);
226 if (iexclude_list[iexclude_num-1] <= ROOTINO) {
227 (void)fprintf(stderr, "Cannot exclude inode %ld\n", iexclude_list[iexclude_num-1]);
228 exit(X_STARTUP);
229 }
230 msg("Added %d to exclude list\n",
231 iexclude_list[iexclude_num-1]);
232 break;
233
234 case 'f': /* output file */
235 tapeprefix = optarg;
236 break;
237
238 case 'F': /* end of tape script */
239 eot_script = optarg;
240 break;
241
242 case 'h':
243 honorlevel = numarg("honor level", 0L, 10L);
244 break;
245
246 #ifdef KERBEROS
247 case 'k':
248 dokerberos = 1;
249 break;
250 #endif
251
252 case 'L':
253 /*
254 * Note that although there are LBLSIZE characters,
255 * the last must be '\0', so the limit on strlen()
256 * is really LBLSIZE-1.
257 */
258 strncpy(spcl.c_label, optarg, LBLSIZE);
259 spcl.c_label[LBLSIZE-1] = '\0';
260 if (strlen(optarg) > LBLSIZE-1) {
261 msg(
262 "WARNING Label `%s' is larger than limit of %d characters.\n",
263 optarg, LBLSIZE-1);
264 msg("WARNING: Using truncated label `%s'.\n",
265 spcl.c_label);
266 }
267 break;
268
269 case 'M': /* multi-volume flag */
270 Mflag = 1;
271 break;
272
273 case 'n': /* notify operators */
274 notify = 1;
275 break;
276
277 case 's': /* tape size, feet */
278 unlimited = 0;
279 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
280 break;
281
282 case 'S':
283 sizest = 1; /* return size estimate only */
284 break;
285
286 case 'T': /* time of last dump */
287 spcl.c_ddate = unctime(optarg);
288 if (spcl.c_ddate < 0) {
289 (void)fprintf(stderr, "bad time \"%s\"\n",
290 optarg);
291 exit(X_STARTUP);
292 }
293 Tflag = 1;
294 lastlevel = '?';
295 break;
296
297 case 'u': /* update dumpdates */
298 uflag = 1;
299 break;
300
301 case 'W': /* what to do */
302 case 'w':
303 lastdump(ch);
304 exit(X_FINOK); /* do nothing else */
305 #ifdef HAVE_ZLIB
306 case 'z':
307 compressed = 1;
308 break;
309 #endif /* HAVE_ZLIB */
310
311 default:
312 usage();
313 }
314 argc -= optind;
315 argv += optind;
316
317 if (argc < 1) {
318 (void)fprintf(stderr, "Must specify disk or filesystem\n");
319 exit(X_STARTUP);
320 }
321 diskparam = *argv++;
322 if (strlen(diskparam) >= MAXPATHLEN) {
323 (void)fprintf(stderr, "Disk or filesystem name too long: %s\n", diskparam);
324 exit(X_STARTUP);
325 }
326 argc--;
327 if (argc >= 1) {
328 (void)fprintf(stderr, "Unknown arguments to dump:");
329 while (argc--)
330 (void)fprintf(stderr, " %s", *argv++);
331 (void)fprintf(stderr, "\n");
332 exit(X_STARTUP);
333 }
334 if (Tflag && uflag) {
335 (void)fprintf(stderr,
336 "You cannot use the T and u flags together.\n");
337 exit(X_STARTUP);
338 }
339 if (strcmp(tapeprefix, "-") == 0) {
340 pipeout++;
341 tapeprefix = "standard output";
342 }
343
344 if (blocksperfile)
345 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
346 else if (!unlimited) {
347 /*
348 * Determine how to default tape size and density
349 *
350 * density tape size
351 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
352 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
353 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
354 * (450*4 - slop)
355 * hilit19 hits again: "
356 */
357 if (density == 0)
358 density = cartridge ? 100 : 160;
359 if (tsize == 0)
360 tsize = cartridge ? 1700L*120L : 2300L*120L;
361 }
362
363 if (strchr(tapeprefix, ':')) {
364 host = tapeprefix;
365 tapeprefix = strchr(host, ':');
366 *tapeprefix++ = '\0';
367 #ifdef RDUMP
368 if (index(tapeprefix, '\n')) {
369 (void)fprintf(stderr, "invalid characters in tape\n");
370 exit(X_STARTUP);
371 }
372 if (rmthost(host) == 0)
373 exit(X_STARTUP);
374 #else
375 (void)fprintf(stderr, "remote dump not enabled\n");
376 exit(X_STARTUP);
377 #endif
378 }
379 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
380
381 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
382 signal(SIGHUP, sig);
383 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
384 signal(SIGTRAP, sig);
385 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
386 signal(SIGFPE, sig);
387 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
388 signal(SIGBUS, sig);
389 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
390 signal(SIGSEGV, sig);
391 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
392 signal(SIGTERM, sig);
393 if (signal(SIGINT, interrupt) == SIG_IGN)
394 signal(SIGINT, SIG_IGN);
395 set_operators(); /* /etc/group snarfed */
396 getfstab(); /* /etc/fstab snarfed */
397
398 disk = get_device_name(diskparam);
399 if (!disk) { /* null means the disk is some form
400 of LABEL= or UID= but it was not
401 found */
402 msg("Cannot find a disk having %s\n", diskparam);
403 exit(X_STARTUP);
404 }
405 /*
406 * disk may end in / and this can confuse
407 * fstabsearch.
408 */
409 if (strlen(disk) > 1 && disk[strlen(disk) - 1] == '/')
410 disk[strlen(disk) - 1] = '\0';
411 /*
412 * disk can be either the full special file name,
413 * the suffix of the special file name,
414 * the special name missing the leading '/',
415 * the file system name with or without the leading '/'.
416 */
417 if ((dt = fstabsearch(disk)) != NULL) {
418 disk = rawname(dt->fs_spec);
419 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
420 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
421 } else {
422 #ifdef __linux__
423 #ifdef HAVE_REALPATH
424 if (realpath(disk, pathname) == NULL)
425 #endif
426 strcpy(pathname, disk);
427 /*
428 * The argument could be now a mountpoint of
429 * a filesystem specified in fstab. Search for it.
430 */
431 if ((dt = fstabsearch(pathname)) != NULL) {
432 disk = rawname(dt->fs_spec);
433 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
434 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
435 } else {
436 /*
437 * The argument was not found in the fstab
438 * assume that this is a subtree and search for it
439 */
440 dt = fstabsearchdir(pathname, directory);
441 if (dt != NULL) {
442 char name[MAXPATHLEN];
443 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
444 (void)snprintf(name, sizeof(name), "%s (dir %s)",
445 dt->fs_file, directory);
446 (void)strncpy(spcl.c_filesys, name, NAMELEN);
447 disk = rawname(dt->fs_spec);
448 } else {
449 (void)strncpy(spcl.c_dev, disk, NAMELEN);
450 (void)strncpy(spcl.c_filesys, "an unlisted file system",
451 NAMELEN);
452 }
453 }
454 #else
455 (void)strncpy(spcl.c_dev, disk, NAMELEN);
456 (void)strncpy(spcl.c_filesys, "an unlisted file system",
457 NAMELEN);
458 #endif
459 }
460
461 if (directory[0] != 0) {
462 if (level != '0') {
463 (void)fprintf(stderr, "Only level 0 dumps are allowed on a subdirectory\n");
464 exit(X_STARTUP);
465 }
466 if (uflag) {
467 (void)fprintf(stderr, "You can't update the dumpdates file when dumping a subdirectory\n");
468 exit(X_STARTUP);
469 }
470 }
471 spcl.c_dev[NAMELEN-1] = '\0';
472 spcl.c_filesys[NAMELEN-1] = '\0';
473 (void)gethostname(spcl.c_host, NAMELEN);
474 spcl.c_host[NAMELEN-1] = '\0';
475 spcl.c_level = level - '0';
476 spcl.c_type = TS_TAPE;
477 if (!Tflag)
478 getdumptime(uflag); /* dumpdates snarfed */
479
480 if (spcl.c_ddate == 0 && spcl.c_level) {
481 msg("WARNING: There is no inferior level dump on this filesystem\n");
482 msg("WARNING: Assuming a level 0 dump by default\n");
483 level = '0';
484 spcl.c_level = 0;
485 }
486
487 if (Mflag)
488 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
489 else
490 strncpy(tape, tapeprefix, MAXPATHLEN);
491 tape[MAXPATHLEN - 1] = '\0';
492
493 if (!sizest) {
494
495 msg("Date of this level %c dump: %s", level,
496 #ifdef __linux__
497 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
498 #else
499 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
500 #endif
501 msg("Date of last level %c dump: %s", lastlevel,
502 #ifdef __linux__
503 spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
504 #else
505 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
506 #endif
507 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
508 if (host)
509 msgtail("to %s on host %s\n", tape, host);
510 else
511 msgtail("to %s\n", tape);
512 } /* end of size estimate */
513
514 #ifdef __linux__
515 retval = dump_fs_open(disk, &fs);
516 if (retval) {
517 com_err(disk, retval, "while opening filesystem");
518 if (retval == EXT2_ET_REV_TOO_HIGH)
519 printf ("Get a newer version of dump!\n");
520 exit(X_STARTUP);
521 }
522 if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
523 com_err(disk, retval, "while opening filesystem");
524 printf ("Get a newer version of dump!\n");
525 exit(X_STARTUP);
526 }
527 if ((diskfd = open(disk, O_RDONLY)) < 0) {
528 msg("Cannot open %s\n", disk);
529 exit(X_STARTUP);
530 }
531 /* if no user label specified, use ext2 filesystem label if available */
532 if (spcl.c_label[0] == '\0') {
533 const char *lbl;
534 if ( (lbl = get_device_label(disk)) != NULL) {
535 strncpy(spcl.c_label, lbl, LBLSIZE);
536 spcl.c_label[LBLSIZE-1] = '\0';
537 }
538 else
539 strcpy(spcl.c_label, "none"); /* safe strcpy. */
540 }
541 sync();
542 dev_bsize = DEV_BSIZE;
543 dev_bshift = ffs(dev_bsize) - 1;
544 if (dev_bsize != (1 << dev_bshift))
545 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
546 tp_bshift = ffs(TP_BSIZE) - 1;
547 if (TP_BSIZE != (1 << tp_bshift))
548 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
549 maxino = fs->super->s_inodes_count;
550 #if 0
551 spcl.c_flags |= DR_NEWINODEFMT;
552 #endif
553 #else /* __linux __*/
554 if ((diskfd = open(disk, O_RDONLY)) < 0) {
555 msg("Cannot open %s\n", disk);
556 exit(X_STARTUP);
557 }
558 sync();
559 sblock = (struct fs *)sblock_buf;
560 bread(SBOFF, (char *) sblock, SBSIZE);
561 if (sblock->fs_magic != FS_MAGIC)
562 quit("bad sblock magic number\n");
563 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
564 dev_bshift = ffs(dev_bsize) - 1;
565 if (dev_bsize != (1 << dev_bshift))
566 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
567 tp_bshift = ffs(TP_BSIZE) - 1;
568 if (TP_BSIZE != (1 << tp_bshift))
569 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
570 #ifdef FS_44INODEFMT
571 if (sblock->fs_inodefmt >= FS_44INODEFMT)
572 spcl.c_flags |= DR_NEWINODEFMT;
573 #endif
574 maxino = sblock->fs_ipg * sblock->fs_ncg;
575 #endif /* __linux__ */
576 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
577 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
578 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
579 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
580 if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
581 quit("out of memory allocating inode maps\n");
582 tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
583
584 nonodump = spcl.c_level < honorlevel;
585
586 msg("Label: %s\n", spcl.c_label);
587
588 #if defined(SIGINFO)
589 (void)signal(SIGINFO, statussig);
590 #endif
591
592 if (!sizest)
593 msg("mapping (Pass I) [regular files]\n");
594 #ifdef __linux__
595 if (directory[0] == 0)
596 anydirskipped = mapfiles(maxino, &tapesize);
597 else
598 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
599 #else
600 anydirskipped = mapfiles(maxino, &tapesize);
601 #endif
602
603 if (!sizest)
604 msg("mapping (Pass II) [directories]\n");
605 while (anydirskipped) {
606 anydirskipped = mapdirs(maxino, &tapesize);
607 }
608
609 if (sizest) {
610 printf("%.0f\n", ((double)tapesize + 11) * TP_BSIZE);
611 exit(X_FINOK);
612 } /* stop here for size estimate */
613
614 if (pipeout || unlimited) {
615 tapesize += 11; /* 10 trailer blocks + 1 map header */
616 msg("estimated %ld tape blocks.\n", tapesize);
617 } else {
618 double fetapes;
619
620 if (blocksperfile)
621 fetapes = (double) tapesize / blocksperfile;
622 else if (cartridge) {
623 /* Estimate number of tapes, assuming streaming stops at
624 the end of each block written, and not in mid-block.
625 Assume no erroneous blocks; this can be compensated
626 for with an artificially low tape size. */
627 fetapes =
628 ( (double) tapesize /* blocks */
629 * TP_BSIZE /* bytes/block */
630 * (1.0/density) /* 0.1" / byte " */
631 +
632 (double) tapesize /* blocks */
633 * (1.0/ntrec) /* streaming-stops per block */
634 * 15.48 /* 0.1" / streaming-stop " */
635 ) * (1.0 / tsize ); /* tape / 0.1" " */
636 } else {
637 /* Estimate number of tapes, for old fashioned 9-track
638 tape */
639 int tenthsperirg = (density == 625) ? 3 : 7;
640 fetapes =
641 ( (double) tapesize /* blocks */
642 * TP_BSIZE /* bytes / block */
643 * (1.0/density) /* 0.1" / byte " */
644 +
645 (double) tapesize /* blocks */
646 * (1.0/ntrec) /* IRG's / block */
647 * tenthsperirg /* 0.1" / IRG " */
648 ) * (1.0 / tsize ); /* tape / 0.1" " */
649 }
650 etapes = fetapes; /* truncating assignment */
651 etapes++;
652 /* count the dumped inodes map on each additional tape */
653 tapesize += (etapes - 1) *
654 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
655 tapesize += etapes + 10; /* headers + 10 trailer blks */
656 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
657 tapesize, fetapes);
658 }
659
660 /*
661 * Allocate tape buffer.
662 */
663 if (!alloctape())
664 quit(
665 "can't allocate tape buffers - try a smaller blocking factor.\n");
666
667 startnewtape(1);
668 #ifdef __linux__
669 (void)time4(&(tstart_writing));
670 #else
671 (void)time((time_t *)&(tstart_writing));
672 #endif
673 dumpmap(usedinomap, TS_CLRI, maxino - 1);
674
675 msg("dumping (Pass III) [directories]\n");
676 dirty = 0; /* XXX just to get gcc to shut up */
677 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
678 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
679 dirty = *map++;
680 else
681 dirty >>= 1;
682 if ((dirty & 1) == 0)
683 continue;
684 /*
685 * Skip directory inodes deleted and maybe reallocated
686 */
687 dp = getino(ino);
688 if ((dp->di_mode & IFMT) != IFDIR)
689 continue;
690 #ifdef __linux__
691 /*
692 * Skip directory inodes deleted and not yes reallocated...
693 */
694 if (dp->di_nlink == 0 || dp->di_dtime != 0)
695 continue;
696 (void)dumpdirino(dp, ino);
697 #else
698 (void)dumpino(dp, ino);
699 #endif
700 }
701
702 msg("dumping (Pass IV) [regular files]\n");
703 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
704 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
705 dirty = *map++;
706 else
707 dirty >>= 1;
708 if ((dirty & 1) == 0)
709 continue;
710 /*
711 * Skip inodes deleted and reallocated as directories.
712 */
713 dp = getino(ino);
714 if ((dp->di_mode & IFMT) == IFDIR)
715 continue;
716 #ifdef __linux__
717 /*
718 * No need to check here for deleted and not yes reallocated inodes
719 * since this is done in dumpino().
720 */
721 #endif
722 (void)dumpino(dp, ino);
723 }
724
725 #ifdef __linux__
726 (void)time4(&(tend_writing));
727 #else
728 (void)time((time_t *)&(tend_writing));
729 #endif
730 spcl.c_type = TS_END;
731 for (i = 0; i < ntrec; i++)
732 writeheader(maxino - 1);
733
734 tnow = trewind();
735
736 if (pipeout)
737 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
738 ((double)spcl.c_tapea * TP_BSIZE / 1048576));
739 else
740 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
741 spcl.c_tapea,
742 ((double)spcl.c_tapea * TP_BSIZE / 1048576),
743 spcl.c_volume);
744
745 /* report dump performance, avoid division through zero */
746 if (tend_writing - tstart_writing == 0)
747 msg("finished in less than a second\n");
748 else
749 msg("finished in %d seconds, throughput %d KBytes/sec\n",
750 tend_writing - tstart_writing,
751 spcl.c_tapea / (tend_writing - tstart_writing));
752
753 putdumptime();
754 #ifdef __linux__
755 msg("Date of this level %c dump: %s", level,
756 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
757 #else
758 msg("Date of this level %c dump: %s", level,
759 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
760 #endif
761 msg("Date this dump completed: %s", ctime(&tnow));
762
763 msg("Average transfer rate: %ld KB/s\n", xferrate / tapeno);
764 if (compressed) {
765 long tapekb = bytes_written / 1024;
766 double rate = .0005 + (double) spcl.c_tapea / tapekb;
767 msg("Wrote %ldKB uncompressed, %ldKB compressed,"
768 " compression ratio %1.3f\n",
769 spcl.c_tapea, tapekb, rate);
770 }
771
772 broadcast("DUMP IS DONE!\7\7\n");
773 msg("DUMP IS DONE\n");
774 Exit(X_FINOK);
775 /* NOTREACHED */
776 return 0; /* gcc - shut up */
777 }
778
779 static void
780 usage(void)
781 {
782 char white[MAXPATHLEN];
783 int i;
784
785 strncpy(white, __progname, MAXPATHLEN-1);
786 white[MAXPATHLEN-1] = '\0';
787 for (i=0; i<MAXPATHLEN; ++i)
788 if (white[i] != '\0') white[i] = ' ';
789
790 fprintf(stderr,
791 "%s %s\n", __progname, _DUMP_VERSION);
792 fprintf(stderr,
793 "usage:\t%s [-0123456789ac"
794 #ifdef KERBEROS
795 "k"
796 #endif
797 "MnSu"
798 #ifdef HAVE_ZLIB
799 "z"
800 #endif
801 "] [-B records] [-b blocksize] [-d density]\n"
802 "\t%s [-e inode#] [-f file] [-h level] [-s feet] [-T date] filesystem\n"
803 "\t%s [-W | -w]\n", __progname, white, __progname);
804 exit(X_STARTUP);
805 }
806
807 /*
808 * Pick up a numeric argument. It must be nonnegative and in the given
809 * range (except that a vmax of 0 means unlimited).
810 */
811 static long
812 numarg(const char *meaning, long vmin, long vmax)
813 {
814 char *p;
815 long val;
816
817 val = strtol(optarg, &p, 10);
818 if (*p)
819 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
820 if (val < vmin || (vmax && val > vmax))
821 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
822 return (val);
823 }
824
825 void
826 sig(int signo)
827 {
828 switch(signo) {
829 case SIGALRM:
830 case SIGBUS:
831 case SIGFPE:
832 case SIGHUP:
833 case SIGTERM:
834 case SIGTRAP:
835 if (pipeout)
836 quit("Signal on pipe: cannot recover\n");
837 msg("Rewriting attempted as response to unknown signal.\n");
838 (void)fflush(stderr);
839 (void)fflush(stdout);
840 close_rewind();
841 exit(X_REWRITE);
842 /* NOTREACHED */
843 case SIGSEGV:
844 msg("SIGSEGV: ABORTING!\n");
845 (void)signal(SIGSEGV, SIG_DFL);
846 (void)kill(0, SIGSEGV);
847 /* NOTREACHED */
848 }
849 }
850
851 char *
852 rawname(char *cp)
853 {
854 #ifdef __linux__
855 return cp;
856 #else /* __linux__ */
857 static char rawbuf[MAXPATHLEN];
858 char *dp = strrchr(cp, '/');
859
860 if (dp == NULL)
861 return (NULL);
862 *dp = '\0';
863 (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
864 rawbuf[MAXPATHLEN-1] = '\0';
865 *dp = '/';
866 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
867 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
868 return (rawbuf);
869 #endif /* __linux__ */
870 }
871
872 /*
873 * obsolete --
874 * Change set of key letters and ordered arguments into something
875 * getopt(3) will like.
876 */
877 static void
878 obsolete(int *argcp, char **argvp[])
879 {
880 int argc, flags;
881 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
882
883 /* Setup. */
884 argv = *argvp;
885 argc = *argcp;
886
887 /* Return if no arguments or first argument has leading dash. */
888 ap = argv[1];
889 if (argc == 1 || *ap == '-')
890 return;
891
892 /* Allocate space for new arguments. */
893 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
894 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
895 err(X_STARTUP, "malloc new args");
896
897 *nargv++ = *argv;
898 argv += 2;
899
900 for (flags = 0; *ap; ++ap) {
901 switch (*ap) {
902 case 'B':
903 case 'b':
904 case 'd':
905 case 'e':
906 case 'f':
907 case 'F':
908 case 'h':
909 case 'L':
910 case 's':
911 case 'T':
912 if (*argv == NULL) {
913 warnx("option requires an argument -- %c", *ap);
914 usage();
915 }
916 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
917 err(X_STARTUP, "malloc arg");
918 nargv[0][0] = '-';
919 nargv[0][1] = *ap;
920 (void)strcpy(&nargv[0][2], *argv);
921 ++argv;
922 ++nargv;
923 break;
924 default:
925 if (!flags) {
926 *p++ = '-';
927 flags = 1;
928 }
929 *p++ = *ap;
930 break;
931 }
932 }
933
934 /* Terminate flags. */
935 if (flags) {
936 *p = '\0';
937 *nargv++ = flagsp;
938 }
939
940 /* Copy remaining arguments. */
941 while ((*nargv++ = *argv++));
942
943 /* Update argument count. */
944 *argcp = nargv - *argvp - 1;
945 }
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