1 /* $NetBSD: main.c,v 1.79 2024/10/04 11:38:44 rillig Exp $ */
2
3 /*-
4 * Copyright (c) 1980, 1991, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\
35 The Regents of the University of California. All rights reserved.");
36 #endif /* not lint */
37
38 #ifndef lint
39 #if 0
40 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95";
41 #else
42 __RCSID("$NetBSD: main.c,v 1.79 2024/10/04 11:38:44 rillig Exp $");
43 #endif
44 #endif /* not lint */
45
46 #include <sys/param.h>
47 #include <sys/time.h>
48 #include <sys/stat.h>
49 #include <sys/mount.h>
50 #include <sys/sysctl.h>
51
52 #include <ufs/ffs/fs.h>
53 #include <ufs/ffs/ffs_extern.h>
54
55 #include <ctype.h>
56 #include <err.h>
57 #include <errno.h>
58 #include <fcntl.h>
59 #include <fstab.h>
60 #include <signal.h>
61 #include <stdio.h>
62 #include <stdlib.h>
63 #include <string.h>
64 #include <time.h>
65 #include <unistd.h>
66 #include <util.h>
67
68 #include "dump.h"
69 #include "pathnames.h"
70 #include "snapshot.h"
71
72 union u_spcl u_spcl;
73 struct ufsi *ufsib;
74 int mapsize;
75 char *usedinomap;
76 char *dumpdirmap;
77 char *dumpinomap;
78 char *disk;
79 char *disk_dev;
80 const char *tape;
81 const char *dumpdates;
82 const char *temp;
83 char lastlevel;
84 char level;
85 int uflag;
86 const char *dumpdev;
87 int eflag;
88 int lflag;
89 int diskfd;
90 int tapefd;
91 int pipeout;
92 int trueinc;
93 ino_t curino;
94 int newtape;
95 u_int64_t tapesize;
96 long tsize;
97 long asize;
98 int etapes;
99 int nonodump;
100 int unlimited;
101 time_t tstart_writing;
102 time_t tstart_volume;
103 int xferrate;
104 char sblock_buf[MAXBSIZE];
105 int dev_bshift;
106 int tp_bshift;
107 int needswap;
108
109 int timestamp; /* print message timestamps */
110 int notify; /* notify operator flag */
111 u_int64_t blockswritten; /* number of blocks written on current tape */
112 int tapeno; /* current tape number */
113 int density; /* density in bytes/0.1" */
114 int ntrec = NTREC; /* # tape blocks in each tape record */
115 int cartridge; /* Assume non-cartridge tape */
116 long dev_bsize = 1; /* recalculated below */
117 long blocksperfile; /* output blocks per file */
118 const char *host; /* remote host (if any) */
119 int readcache = -1; /* read cache size (in readblksize blks) */
120 int readblksize = -1; /* read block size */
121 char default_time_string[] = "%T %Z"; /* default timestamp string */
122 char *time_string = default_time_string; /* timestamp string */
123
124 static long numarg(const char *, long, long);
125 static void obsolete(int *, char **[]);
126 static void usage(void);
127
128 int
main(int argc,char * argv[])129 main(int argc, char *argv[])
130 {
131 ino_t ino;
132 int dirty;
133 union dinode *dp;
134 struct fstab *dt;
135 struct statvfs *mntinfo, fsbuf;
136 char *map, *cp;
137 int ch;
138 int i, anydirskipped, bflag = 0, Tflag = 0, Fflag = 0, honorlevel = 1;
139 int snap_internal = 0;
140 ino_t maxino;
141 time_t tnow, date;
142 int dirc;
143 char *mountpoint;
144 int just_estimate = 0;
145 char labelstr[LBLSIZE];
146 char buf[MAXPATHLEN], rbuf[MAXPATHLEN];
147 char *new_time_format;
148 char *snap_backup = NULL;
149
150 spcl.c_date = 0;
151 (void)time(&tnow);
152 spcl.c_date = tnow;
153 tzset(); /* set up timezone for strftime */
154 if ((new_time_format = getenv("TIMEFORMAT")) != NULL)
155 time_string = new_time_format;
156
157 tsize = 0; /* Default later, based on 'c' option for cart tapes */
158 if ((tape = getenv("TAPE")) == NULL)
159 tape = _PATH_DEFTAPE;
160 dumpdates = _PATH_DUMPDATES;
161 temp = _PATH_DTMP;
162 strcpy(labelstr, "none"); /* XXX safe strcpy. */
163 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
164 quit("TP_BSIZE must be a multiple of DEV_BSIZE");
165 level = '0';
166 timestamp = 0;
167
168 if (argc < 2)
169 usage();
170
171 obsolete(&argc, &argv);
172 while ((ch = getopt(argc, argv,
173 "0123456789aB:b:cd:D:eFf:h:ik:l:L:nr:s:StT:uU:Wwx:X")) != -1)
174 switch (ch) {
175 /* dump level */
176 case '0': case '1': case '2': case '3': case '4':
177 case '5': case '6': case '7': case '8': case '9':
178 level = ch;
179 break;
180
181 case 'a': /* `auto-size', Write to EOM. */
182 unlimited = 1;
183 break;
184
185 case 'B': /* blocks per output file */
186 blocksperfile = numarg("blocks per file", 1L, 0L);
187 break;
188
189 case 'b': /* blocks per tape write */
190 ntrec = numarg("blocks per write", 1L, 1000L);
191 bflag = 1;
192 break;
193
194 case 'c': /* Tape is cart. not 9-track */
195 cartridge = 1;
196 break;
197
198 case 'd': /* density, in bits per inch */
199 density = numarg("density", 10L, 327670L) / 10;
200 if (density >= 625 && !bflag)
201 ntrec = HIGHDENSITYTREC;
202 break;
203
204 case 'D': /* specify alt. dumpdates file */
205 dumpdates = optarg;
206 break;
207
208 case 'e': /* eject full tapes */
209 eflag = 1;
210 break;
211
212 case 'F': /* files-to-dump is an fs image */
213 Fflag = 1;
214 break;
215
216 case 'f': /* output file */
217 tape = optarg;
218 break;
219
220 case 'h':
221 honorlevel = numarg("honor level", 0L, 10L);
222 break;
223
224 case 'i': /* "true incremental" regardless level */
225 level = 'i';
226 trueinc = 1;
227 break;
228
229 case 'k':
230 readblksize = numarg("read block size", 0, 64) * 1024;
231 break;
232
233 case 'l': /* autoload after eject full tapes */
234 eflag = 1;
235 lflag = numarg("timeout (in seconds)", 1, 0);
236 break;
237
238 case 'L':
239 /*
240 * Note that although there are LBLSIZE characters,
241 * the last must be '\0', so the limit on strlen()
242 * is really LBLSIZE-1.
243 */
244 if (strlcpy(labelstr, optarg, sizeof(labelstr))
245 >= sizeof(labelstr)) {
246 msg(
247 "WARNING Label `%s' is larger than limit of %lu characters.\n",
248 optarg,
249 (unsigned long)sizeof(labelstr) - 1);
250 msg("WARNING: Using truncated label `%s'.\n",
251 labelstr);
252 }
253 break;
254 case 'n': /* notify operators */
255 notify = 1;
256 break;
257
258 case 'r': /* read cache size */
259 readcache = numarg("read cache size", 0, 512);
260 break;
261
262 case 's': /* tape size, feet */
263 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
264 break;
265
266 case 'S': /* exit after estimating # of tapes */
267 just_estimate = 1;
268 break;
269
270 case 't':
271 timestamp = 1;
272 break;
273
274 case 'T': /* time of last dump */
275 spcl.c_ddate = unctime(optarg);
276 if (spcl.c_ddate < 0) {
277 (void)fprintf(stderr, "bad time \"%s\"\n",
278 optarg);
279 exit(X_STARTUP);
280 }
281 Tflag = 1;
282 lastlevel = '?';
283 break;
284
285 case 'u': /* update /etc/dumpdates */
286 uflag = 1;
287 break;
288
289 case 'U': /* dump device in /etc/dumpdates */
290 dumpdev = optarg;
291 break;
292
293 case 'W': /* what to do */
294 case 'w':
295 lastdump(ch);
296 exit(X_FINOK); /* do nothing else */
297
298 case 'x':
299 snap_backup = optarg;
300 break;
301
302 case 'X':
303 snap_internal = 1;
304 break;
305
306 default:
307 usage();
308 }
309 argc -= optind;
310 argv += optind;
311
312 if (argc < 1) {
313 (void)fprintf(stderr,
314 "Must specify disk or image, or file list\n");
315 exit(X_STARTUP);
316 }
317
318
319 /*
320 * determine if disk is a subdirectory, and setup appropriately
321 */
322 getfstab(); /* /etc/fstab snarfed */
323 disk = NULL;
324 disk_dev = NULL;
325 mountpoint = NULL;
326 dirc = 0;
327 for (i = 0; i < argc; i++) {
328 struct stat sb;
329 int error;
330
331 error = lstat(argv[i], &sb);
332 if (Fflag || (!error && (S_ISCHR(sb.st_mode) || S_ISBLK(sb.st_mode)))) {
333 if (error)
334 quite(errno, "can't stat %s", argv[i]);
335 disk = argv[i];
336 multicheck:
337 if (dirc != 0)
338 quit("can't dump a disk or image at the same"
339 " time as a file list");
340 break;
341 }
342 if ((dt = fstabsearch(argv[i])) != NULL) {
343 disk = argv[i];
344 mountpoint = xstrdup(dt->fs_file);
345 goto multicheck;
346 }
347 if (statvfs(argv[i], &fsbuf) == -1)
348 quite(errno, "can't statvfs %s", argv[i]);
349 disk = fsbuf.f_mntfromname;
350 if (strcmp(argv[i], fsbuf.f_mntonname) == 0)
351 goto multicheck;
352 if (mountpoint == NULL) {
353 mountpoint = xstrdup(fsbuf.f_mntonname);
354 if (uflag) {
355 msg("Ignoring u flag for subdir dump\n");
356 uflag = 0;
357 }
358 if (level > '0') {
359 msg("Subdir dump is done at level 0\n");
360 level = '0';
361 }
362 msg("Dumping sub files/directories from %s\n",
363 mountpoint);
364 } else {
365 if (strcmp(mountpoint, fsbuf.f_mntonname) != 0)
366 quit("%s is not on %s", argv[i], mountpoint);
367 }
368 msg("Dumping file/directory %s\n", argv[i]);
369 dirc++;
370 }
371 if (mountpoint)
372 free(mountpoint);
373
374 if (dirc == 0) {
375 argv++;
376 if (argc != 1) {
377 (void)fprintf(stderr, "Excess arguments to dump:");
378 while (--argc)
379 (void)fprintf(stderr, " %s", *argv++);
380 (void)fprintf(stderr, "\n");
381 exit(X_STARTUP);
382 }
383 }
384 if (Tflag && uflag) {
385 (void)fprintf(stderr,
386 "You cannot use the T and u flags together.\n");
387 exit(X_STARTUP);
388 }
389 if (strcmp(tape, "-") == 0) {
390 pipeout++;
391 tape = "standard output";
392 }
393
394 if (blocksperfile)
395 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
396 else if (!unlimited) {
397 /*
398 * Determine how to default tape size and density
399 *
400 * density tape size
401 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
402 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
403 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
404 * (450*4 - slop)
405 */
406 if (density == 0)
407 density = cartridge ? 100 : 160;
408 if (tsize == 0)
409 tsize = cartridge ? 1700L*120L : 2300L*120L;
410 }
411
412 /* LINTED 346 "call to 'strchr' effectively discards 'const'" */
413 if ((cp = strchr(tape, ':')) != NULL) {
414 host = tape;
415 /* This is fine, because all the const strings don't have : */
416 *cp++ = '\0';
417 tape = cp;
418 #ifdef RDUMP
419 if (rmthost(host) == 0)
420 exit(X_STARTUP);
421 #else
422 (void)fprintf(stderr, "remote dump not enabled\n");
423 exit(X_STARTUP);
424 #endif
425 }
426
427 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
428 signal(SIGHUP, sig);
429 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
430 signal(SIGTRAP, sig);
431 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
432 signal(SIGFPE, sig);
433 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
434 signal(SIGBUS, sig);
435 #if 0
436 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
437 signal(SIGSEGV, sig);
438 #endif
439 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
440 signal(SIGTERM, sig);
441 if (signal(SIGINT, interrupt) == SIG_IGN)
442 signal(SIGINT, SIG_IGN);
443
444 /*
445 * disk can be either the full special file name, or
446 * the file system name.
447 */
448 mountpoint = NULL;
449 mntinfo = mntinfosearch(disk);
450 if ((dt = fstabsearch(disk)) != NULL) {
451 if (getfsspecname(buf, sizeof(buf), dt->fs_spec) == NULL)
452 quite(errno, "can't resolve mount %s (%s)", dt->fs_spec,
453 buf);
454 if (getdiskrawname(rbuf, sizeof(rbuf), buf) == NULL)
455 quite(errno, "can't get disk raw name for %s", buf);
456 disk = rbuf;
457 mountpoint = dt->fs_file;
458 msg("Found %s on %s in %s\n", disk, mountpoint, _PATH_FSTAB);
459 } else if (mntinfo != NULL) {
460 if (getdiskrawname(rbuf, sizeof(rbuf), mntinfo->f_mntfromname)
461 == NULL)
462 quite(errno, "can't get disk raw name for %s",
463 mntinfo->f_mntfromname);
464 disk = rbuf;
465 mountpoint = mntinfo->f_mntonname;
466 msg("Found %s on %s in mount table\n", disk, mountpoint);
467 }
468 if (mountpoint != NULL) {
469 if (dirc != 0)
470 (void)snprintf(spcl.c_filesys, sizeof(spcl.c_filesys),
471 "a subset of %s", mountpoint);
472 else
473 (void)strlcpy(spcl.c_filesys, mountpoint,
474 sizeof(spcl.c_filesys));
475 } else if (Fflag) {
476 (void)strlcpy(spcl.c_filesys, "a file system image",
477 sizeof(spcl.c_filesys));
478 } else {
479 (void)strlcpy(spcl.c_filesys, "an unlisted file system",
480 sizeof(spcl.c_filesys));
481 }
482 (void)strlcpy(spcl.c_dev, disk, sizeof(spcl.c_dev));
483 (void)strlcpy(spcl.c_label, labelstr, sizeof(spcl.c_label));
484 (void)gethostname(spcl.c_host, sizeof(spcl.c_host));
485 spcl.c_host[sizeof(spcl.c_host) - 1] = '\0';
486
487 if ((snap_backup != NULL || snap_internal) && mntinfo == NULL) {
488 msg("WARNING: Cannot use -x or -X on unmounted file system.\n");
489 snap_backup = NULL;
490 snap_internal = 0;
491 }
492
493 #ifdef DUMP_LFS
494 sync();
495 if (snap_backup != NULL || snap_internal) {
496 if (lfs_wrap_stop(mountpoint) < 0) {
497 msg("Cannot stop writing on %s\n", mountpoint);
498 exit(X_STARTUP);
499 }
500 }
501 if ((diskfd = open(disk, O_RDONLY)) < 0) {
502 msg("Cannot open %s\n", disk);
503 exit(X_STARTUP);
504 }
505 disk_dev = disk;
506 #else /* ! DUMP_LFS */
507 if (snap_backup != NULL || snap_internal) {
508 diskfd = snap_open(mntinfo->f_mntonname, snap_backup,
509 &tnow, &disk_dev);
510 if (diskfd < 0) {
511 msg("Cannot open snapshot of %s\n",
512 mntinfo->f_mntonname);
513 exit(X_STARTUP);
514 }
515 spcl.c_date = tnow;
516 } else {
517 if ((diskfd = open(disk, O_RDONLY)) < 0) {
518 msg("Cannot open %s\n", disk);
519 exit(X_STARTUP);
520 }
521 disk_dev = disk;
522 }
523 sync();
524 #endif /* ! DUMP_LFS */
525
526 needswap = fs_read_sblock(sblock_buf);
527
528 /* true incremental is always a level 10 dump */
529 spcl.c_level = trueinc? iswap32(10): iswap32(level - '0');
530 spcl.c_type = iswap32(TS_TAPE);
531 spcl.c_date = iswap32(spcl.c_date);
532 spcl.c_ddate = iswap32(spcl.c_ddate);
533 if (!Tflag)
534 getdumptime(); /* /etc/dumpdates snarfed */
535
536 date = iswap32(spcl.c_date);
537 msg("Date of this level %c dump: %s", level,
538 spcl.c_date == 0 ? "the epoch\n" : ctime(&date));
539 date = iswap32(spcl.c_ddate);
540 msg("Date of last level %c dump: %s", lastlevel,
541 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&date));
542 msg("Dumping ");
543 if (snap_backup != NULL || snap_internal)
544 msgtail("a snapshot of ");
545 if (dirc != 0)
546 msgtail("a subset of ");
547 msgtail("%s (%s) ", disk, spcl.c_filesys);
548 if (host)
549 msgtail("to %s on host %s\n", tape, host);
550 else
551 msgtail("to %s\n", tape);
552 msg("Label: %s\n", labelstr);
553
554 ufsib = fs_parametrize();
555
556 dev_bshift = ffs(dev_bsize) - 1;
557 if (dev_bsize != (1 << dev_bshift))
558 quit("dev_bsize (%ld) is not a power of 2", dev_bsize);
559 tp_bshift = ffs(TP_BSIZE) - 1;
560 if (TP_BSIZE != (1 << tp_bshift))
561 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
562 maxino = fs_maxino();
563 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
564 usedinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char));
565 dumpdirmap = (char *)xcalloc((unsigned) mapsize, sizeof(char));
566 dumpinomap = (char *)xcalloc((unsigned) mapsize, sizeof(char));
567 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
568
569 nonodump = iswap32(spcl.c_level) < honorlevel;
570
571 initcache(readcache, readblksize);
572
573 (void)signal(SIGINFO, statussig);
574
575 msg("mapping (Pass I) [regular files]\n");
576 anydirskipped = mapfiles(maxino, &tapesize, mountpoint,
577 (dirc ? argv : NULL));
578
579 msg("mapping (Pass II) [directories]\n");
580 while (anydirskipped) {
581 anydirskipped = mapdirs(maxino, &tapesize);
582 }
583
584 if (pipeout || unlimited) {
585 tapesize += 10; /* 10 trailer blocks */
586 msg("estimated %llu tape blocks.\n",
587 (unsigned long long)tapesize);
588 } else {
589 double fetapes;
590
591 if (blocksperfile)
592 fetapes = (double) tapesize / blocksperfile;
593 else if (cartridge) {
594 /* Estimate number of tapes, assuming streaming stops at
595 the end of each block written, and not in mid-block.
596 Assume no erroneous blocks; this can be compensated
597 for with an artificially low tape size. */
598 fetapes =
599 ( (double) tapesize /* blocks */
600 * TP_BSIZE /* bytes/block */
601 * (1.0/density) /* 0.1" / byte */
602 +
603 (double) tapesize /* blocks */
604 * (1.0/ntrec) /* streaming-stops per block */
605 * 15.48 /* 0.1" / streaming-stop */
606 ) * (1.0 / tsize ); /* tape / 0.1" */
607 } else {
608 /* Estimate number of tapes, for old fashioned 9-track
609 tape */
610 int tenthsperirg = (density == 625) ? 3 : 7;
611 fetapes =
612 ( tapesize /* blocks */
613 * TP_BSIZE /* bytes / block */
614 * (1.0/density) /* 0.1" / byte */
615 +
616 tapesize /* blocks */
617 * (1.0/ntrec) /* IRG's / block */
618 * tenthsperirg /* 0.1" / IRG */
619 ) * (1.0 / tsize ); /* tape / 0.1" */
620 }
621 etapes = fetapes; /* truncating assignment */
622 etapes++;
623 /* count the dumped inodes map on each additional tape */
624 tapesize += (etapes - 1) *
625 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
626 tapesize += etapes + 10; /* headers + 10 trailer blks */
627 msg("estimated %llu tape blocks on %3.2f tape(s).\n",
628 (unsigned long long)tapesize, fetapes);
629 }
630 /*
631 * If the user only wants an estimate of the number of
632 * tapes, exit now.
633 */
634 if (just_estimate)
635 exit(X_FINOK);
636
637 /*
638 * Allocate tape buffer.
639 */
640 if (!alloctape())
641 quit("can't allocate tape buffers - try a smaller"
642 " blocking factor.");
643
644 startnewtape(1);
645 (void)time((time_t *)&(tstart_writing));
646 xferrate = 0;
647 dumpmap(usedinomap, TS_CLRI, maxino - 1);
648
649 msg("dumping (Pass III) [directories]\n");
650 dirty = 0; /* XXX just to get gcc to shut up */
651 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
652 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
653 dirty = *map++;
654 else
655 dirty >>= 1;
656 if ((dirty & 1) == 0)
657 continue;
658 /*
659 * Skip directory inodes deleted and maybe reallocated
660 */
661 dp = getino(ino);
662 if ((DIP(dp, mode) & IFMT) != IFDIR)
663 continue;
664 (void)dumpino(dp, ino);
665 }
666
667 msg("dumping (Pass IV) [regular files]\n");
668 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
669 int mode;
670
671 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
672 dirty = *map++;
673 else
674 dirty >>= 1;
675 if ((dirty & 1) == 0)
676 continue;
677 /*
678 * Skip inodes deleted and reallocated as directories.
679 */
680 dp = getino(ino);
681 mode = DIP(dp, mode) & IFMT;
682 if (mode == IFDIR)
683 continue;
684 (void)dumpino(dp, ino);
685 }
686
687 spcl.c_type = iswap32(TS_END);
688 for (i = 0; i < ntrec; i++)
689 writeheader(maxino - 1);
690 if (pipeout)
691 msg("%lld tape blocks\n",(long long)iswap64(spcl.c_tapea));
692 else
693 msg("%lld tape blocks on %d volume%s\n",
694 (long long)iswap64(spcl.c_tapea), iswap32(spcl.c_volume),
695 (iswap32(spcl.c_volume) == 1) ? "" : "s");
696 tnow = do_stats();
697 date = iswap32(spcl.c_date);
698 msg("Date of this level %c dump: %s", level,
699 spcl.c_date == 0 ? "the epoch\n" : ctime(&date));
700 msg("Date this dump completed: %s", ctime(&tnow));
701 msg("Average transfer rate: %d KB/s\n", xferrate / tapeno);
702 putdumptime();
703 trewind(0);
704 broadcast("DUMP IS DONE!\a\a\n");
705 #ifdef DUMP_LFS
706 lfs_wrap_go();
707 #endif /* DUMP_LFS */
708 msg("DUMP IS DONE\n");
709 Exit(X_FINOK);
710 /* NOTREACHED */
711 exit(X_FINOK); /* XXX: to satisfy gcc */
712 }
713
714 static void
usage(void)715 usage(void)
716 {
717 const char *prog = getprogname();
718
719 (void)fprintf(stderr,
720 "usage: %s [-0123456789aceFinStuX] [-B records] [-b blocksize]\n"
721 " [-d density] [-f file] [-h level] [-k read-blocksize]\n"
722 " [-L label] [-l timeout] [-r cachesize] [-s feet]\n"
723 " [-T date] [-U dumpdev] [-x snap-backup] files-to-dump\n"
724 " %s [-W | -w]\n", prog, prog);
725 exit(X_STARTUP);
726 }
727
728 /*
729 * Pick up a numeric argument. It must be nonnegative and in the given
730 * range (except that a vmax of 0 means unlimited).
731 */
732 static long
numarg(const char * meaning,long vmin,long vmax)733 numarg(const char *meaning, long vmin, long vmax)
734 {
735 char *p;
736 long val;
737
738 val = strtol(optarg, &p, 10);
739 if (*p)
740 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
741 if (val < vmin || (vmax && val > vmax))
742 errx(X_STARTUP, "%s must be between %ld and %ld",
743 meaning, vmin, vmax);
744 return (val);
745 }
746
747 void
sig(int signo)748 sig(int signo)
749 {
750
751 switch(signo) {
752 case SIGALRM:
753 case SIGBUS:
754 case SIGFPE:
755 case SIGHUP:
756 case SIGTERM:
757 case SIGTRAP:
758 if (pipeout)
759 quit("Signal on pipe: cannot recover");
760 msg("Rewriting attempted as response to signal %s.\n", sys_siglist[signo]);
761 (void)fflush(stderr);
762 (void)fflush(stdout);
763 close_rewind();
764 exit(X_REWRITE);
765 /* NOTREACHED */
766 case SIGSEGV:
767 msg("SIGSEGV: ABORTING!\n");
768 (void)signal(SIGSEGV, SIG_DFL);
769 (void)kill(0, SIGSEGV);
770 /* NOTREACHED */
771 }
772 }
773
774 /*
775 * obsolete --
776 * Change set of key letters and ordered arguments into something
777 * getopt(3) will like.
778 */
779 static void
obsolete(int * argcp,char ** argvp[])780 obsolete(int *argcp, char **argvp[])
781 {
782 int argc, flags;
783 char *ap, **argv, *flagsp, **nargv, *p;
784
785 /* Setup. */
786 argv = *argvp;
787 argc = *argcp;
788
789 /* Return if no arguments or first argument has leading dash. */
790 ap = argv[1];
791 if (argc == 1 || *ap == '-')
792 return;
793
794 /* Allocate space for new arguments. */
795 *argvp = nargv = xmalloc((argc + 1) * sizeof(char *));
796 p = flagsp = xmalloc(strlen(ap) + 2);
797
798 *nargv++ = *argv;
799 argv += 2;
800
801 for (flags = 0; *ap; ++ap) {
802 switch (*ap) {
803 case 'B':
804 case 'b':
805 case 'd':
806 case 'f':
807 case 'h':
808 case 's':
809 case 'T':
810 case 'x':
811 if (*argv == NULL) {
812 warnx("option requires an argument -- %c", *ap);
813 usage();
814 }
815 nargv[0] = xmalloc(strlen(*argv) + 2 + 1);
816 nargv[0][0] = '-';
817 nargv[0][1] = *ap;
818 (void)strcpy(&nargv[0][2], *argv); /* XXX safe strcpy */
819 ++argv;
820 ++nargv;
821 break;
822 default:
823 if (!flags) {
824 *p++ = '-';
825 flags = 1;
826 }
827 *p++ = *ap;
828 break;
829 }
830 }
831
832 /* Terminate flags. */
833 if (flags) {
834 *p = '\0';
835 *nargv++ = flagsp;
836 } else
837 free(flagsp);
838
839 /* Copy remaining arguments. */
840 while ((*nargv++ = *argv++) != NULL)
841 ;
842
843 /* Update argument count. */
844 *argcp = nargv - *argvp - 1;
845 }
846
847
848 void *
xcalloc(size_t number,size_t size)849 xcalloc(size_t number, size_t size)
850 {
851 void *p;
852
853 p = calloc(number, size);
854 if (p == NULL)
855 quite(errno, "Can't allocate %zu bytes", size * number);
856 return (p);
857 }
858
859 void *
xmalloc(size_t size)860 xmalloc(size_t size)
861 {
862 void *p;
863
864 p = malloc(size);
865 if (p == NULL)
866 quite(errno, "Can't allocate %zu bytes", size);
867 return (p);
868 }
869
870 char *
xstrdup(const char * str)871 xstrdup(const char *str)
872 {
873 char *p;
874
875 p = strdup(str);
876 if (p == NULL)
877 quite(errno, "Can't copy %s", str);
878 return (p);
879 }
880