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Implemented a -M(ulti volume) option for dump.
[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@cybercable.fr>, 1999
6 */
7
8 /*-
9 * Copyright (c) 1980, 1991, 1993, 1994
10 * The Regents of the University of California. All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
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.
27 *
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
38 * SUCH DAMAGE.
39 */
40
41 #ifndef lint
42 static const char rcsid[] =
43 "$Id: main.c,v 1.8 1999/11/21 16:01:47 tiniou Exp $";
44 #endif /* not lint */
45
46 #include <sys/param.h>
47 #include <sys/time.h>
48 #ifdef __linux__
49 #include <linux/ext2_fs.h>
50 #include <sys/stat.h>
51 #include <bsdcompat.h>
52 #else
53 #ifdef sunos
54 #include <sys/vnode.h>
55
56 #include <ufs/inode.h>
57 #include <ufs/fs.h>
58 #else
59 #include <ufs/ufs/dinode.h>
60 #include <ufs/ffs/fs.h>
61 #endif
62 #endif
63
64 #include <protocols/dumprestore.h>
65
66 #include <ctype.h>
67 #include <compaterr.h>
68 #include <fcntl.h>
69 #include <fstab.h>
70 #include <signal.h>
71 #include <stdio.h>
72 #include <stdlib.h>
73 #include <string.h>
74 #include <unistd.h>
75
76 #ifdef __linux__
77 #include <ext2fs/ext2fs.h>
78 #endif
79
80 #include "dump.h"
81 #include "pathnames.h"
82
83 #ifndef SBOFF
84 #define SBOFF (SBLOCK * DEV_BSIZE)
85 #endif
86
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) */
97
98 #ifdef __linux__
99 char *__progname;
100 #endif
101
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));
106
107 int
108 main(int argc, char *argv[])
109 {
110 register ino_t ino;
111 register int dirty;
112 register struct dinode *dp;
113 register struct fstab *dt;
114 register char *map;
115 register int ch;
116 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
117 ino_t maxino;
118 #ifdef __linux__
119 errcode_t retval;
120 char directory[NAME_MAX];
121 char pathname[NAME_MAX];
122 #endif
123 time_t tnow;
124 char labelstr[LBLSIZE];
125
126 spcl.c_date = 0;
127 #ifdef __linux__
128 (void)time4(&spcl.c_date);
129 #else
130 (void)time((time_t *)&spcl.c_date);
131 #endif
132
133 #ifdef __linux__
134 __progname = argv[0];
135 directory[0] = 0;
136 initialize_ext2_error_table();
137 #endif
138
139 tsize = 0; /* Default later, based on 'c' option for cart tapes */
140 if ((tapeprefix = getenv("TAPE")) == NULL)
141 tapeprefix = _PATH_DEFTAPE;
142 dumpdates = _PATH_DUMPDATES;
143 temp = _PATH_DTMP;
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");
147 level = '0';
148
149 if (argc < 2)
150 usage();
151
152 obsolete(&argc, &argv);
153 #ifdef KERBEROS
154 #define optstring "0123456789aB:b:cd:f:h:kL:Mns:T:uWw"
155 #else
156 #define optstring "0123456789aB:b:cd:f:h:L:Mns:T:uWw"
157 #endif
158 while ((ch = getopt(argc, argv, optstring)) != -1)
159 #undef optstring
160 switch (ch) {
161 /* dump level */
162 case '0': case '1': case '2': case '3': case '4':
163 case '5': case '6': case '7': case '8': case '9':
164 level = ch;
165 break;
166
167 case 'a': /* `auto-size', Write to EOM. */
168 unlimited = 1;
169 break;
170
171 case 'B': /* blocks per output file */
172 blocksperfile = numarg("number of blocks per file",
173 1L, 0L);
174 break;
175
176 case 'b': /* blocks per tape write */
177 ntrec = numarg("number of blocks per write",
178 1L, 1000L);
179 if (ntrec > maxbsize/1024) {
180 msg("Please choose a blocksize <= %dKB\n",
181 maxbsize/1024);
182 exit(X_STARTUP);
183 }
184 bflag = 1;
185 break;
186
187 case 'c': /* Tape is cart. not 9-track */
188 cartridge = 1;
189 break;
190
191 case 'd': /* density, in bits per inch */
192 density = numarg("density", 10L, 327670L) / 10;
193 if (density >= 625 && !bflag)
194 ntrec = HIGHDENSITYTREC;
195 break;
196
197 case 'f': /* output file */
198 tapeprefix = optarg;
199 break;
200
201 case 'h':
202 honorlevel = numarg("honor level", 0L, 10L);
203 break;
204
205 #ifdef KERBEROS
206 case 'k':
207 dokerberos = 1;
208 break;
209 #endif
210
211 case 'L':
212 /*
213 * Note that although there are LBLSIZE characters,
214 * the last must be '\0', so the limit on strlen()
215 * is really LBLSIZE-1.
216 */
217 strncpy(labelstr, optarg, LBLSIZE);
218 labelstr[LBLSIZE-1] = '\0';
219 if (strlen(optarg) > LBLSIZE-1) {
220 msg(
221 "WARNING Label `%s' is larger than limit of %d characters.\n",
222 optarg, LBLSIZE-1);
223 msg("WARNING: Using truncated label `%s'.\n",
224 labelstr);
225 }
226 break;
227
228 case 'M': /* multi-volume flag */
229 Mflag = 1;
230 break;
231
232 case 'n': /* notify operators */
233 notify = 1;
234 break;
235
236 case 's': /* tape size, feet */
237 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
238 break;
239
240 case 'T': /* time of last dump */
241 spcl.c_ddate = unctime(optarg);
242 if (spcl.c_ddate < 0) {
243 (void)fprintf(stderr, "bad time \"%s\"\n",
244 optarg);
245 exit(X_STARTUP);
246 }
247 Tflag = 1;
248 lastlevel = '?';
249 break;
250
251 case 'u': /* update dumpdates */
252 uflag = 1;
253 break;
254
255 case 'W': /* what to do */
256 case 'w':
257 lastdump(ch);
258 exit(X_FINOK); /* do nothing else */
259
260 default:
261 usage();
262 }
263 argc -= optind;
264 argv += optind;
265
266 if (argc < 1) {
267 (void)fprintf(stderr, "Must specify disk or filesystem\n");
268 exit(X_STARTUP);
269 }
270 disk = *argv++;
271 argc--;
272 if (argc >= 1) {
273 (void)fprintf(stderr, "Unknown arguments to dump:");
274 while (argc--)
275 (void)fprintf(stderr, " %s", *argv++);
276 (void)fprintf(stderr, "\n");
277 exit(X_STARTUP);
278 }
279 if (Tflag && uflag) {
280 (void)fprintf(stderr,
281 "You cannot use the T and u flags together.\n");
282 exit(X_STARTUP);
283 }
284 if (strcmp(tapeprefix, "-") == 0) {
285 pipeout++;
286 tapeprefix = "standard output";
287 }
288
289 if (blocksperfile)
290 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
291 else if (!unlimited) {
292 /*
293 * Determine how to default tape size and density
294 *
295 * density tape size
296 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
297 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
298 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
299 * (450*4 - slop)
300 * hilit19 hits again: "
301 */
302 if (density == 0)
303 density = cartridge ? 100 : 160;
304 if (tsize == 0)
305 tsize = cartridge ? 1700L*120L : 2300L*120L;
306 }
307
308 if (strchr(tapeprefix, ':')) {
309 host = tapeprefix;
310 tapeprefix = strchr(host, ':');
311 *tapeprefix++ = '\0';
312 #ifdef RDUMP
313 if (index(tapeprefix, '\n')) {
314 (void)fprintf(stderr, "invalid characters in tape\n");
315 exit(X_STARTUP);
316 }
317 if (rmthost(host) == 0)
318 exit(X_STARTUP);
319 #else
320 (void)fprintf(stderr, "remote dump not enabled\n");
321 exit(X_STARTUP);
322 #endif
323 }
324 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
325
326 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
327 signal(SIGHUP, sig);
328 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
329 signal(SIGTRAP, sig);
330 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
331 signal(SIGFPE, sig);
332 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
333 signal(SIGBUS, sig);
334 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
335 signal(SIGSEGV, sig);
336 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
337 signal(SIGTERM, sig);
338 if (signal(SIGINT, interrupt) == SIG_IGN)
339 signal(SIGINT, SIG_IGN);
340 set_operators(); /* /etc/group snarfed */
341 getfstab(); /* /etc/fstab snarfed */
342 /*
343 * disk can be either the full special file name,
344 * the suffix of the special file name,
345 * the special name missing the leading '/',
346 * the file system name with or without the leading '/'.
347 */
348 if ((dt = fstabsearch(disk)) != NULL) {
349 disk = rawname(dt->fs_spec);
350 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
351 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
352 #ifdef __linux__
353 } else {
354 /*
355 * The argument was not found in the fstab
356 * assume that this is a subtree and search for it
357 */
358 #ifdef HAVE_REALPATH
359 if (realpath(disk, pathname) == NULL)
360 #endif
361 strcpy(pathname, disk);
362 dt = fstabsearchdir(pathname, directory);
363 if (dt != NULL) {
364 char name[MAXPATHLEN];
365 (void)sprintf(name, "%s (dir %s)",
366 dt->fs_spec, directory);
367 (void)strncpy(spcl.c_dev, name, NAMELEN);
368 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
369 disk = rawname(dt->fs_spec);
370 } else {
371 (void)strncpy(spcl.c_dev, disk, NAMELEN);
372 (void)strncpy(spcl.c_filesys, "an unlisted file system",
373 NAMELEN);
374 }
375 }
376 #else
377 } else {
378 (void)strncpy(spcl.c_dev, disk, NAMELEN);
379 (void)strncpy(spcl.c_filesys, "an unlisted file system",
380 NAMELEN);
381 }
382 #endif
383 spcl.c_dev[NAMELEN-1]='\0';
384 spcl.c_filesys[NAMELEN-1]='\0';
385 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
386 (void)gethostname(spcl.c_host, NAMELEN);
387 spcl.c_level = level - '0';
388 spcl.c_type = TS_TAPE;
389 if (!Tflag)
390 getdumptime(uflag); /* dumpdates snarfed */
391
392 if (spcl.c_ddate == 0 && spcl.c_level) {
393 msg("WARNING: There is no inferior level dump on this filesystem\n");
394 msg("WARNING: Assuming a level 0 dump by default\n");
395 level = '0';
396 spcl.c_level = 0;
397 }
398
399 if (Mflag)
400 snprintf(tape, NAME_MAX, "%s%03d", tapeprefix, tapeno + 1);
401 else
402 strncpy(tape, tapeprefix, NAME_MAX);
403 tape[NAME_MAX - 1] = '\0';
404
405 msg("Date of this level %c dump: %s", level,
406 #ifdef __linux__
407 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
408 #else
409 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
410 #endif
411 msg("Date of last level %c dump: %s", lastlevel,
412 #ifdef __linux__
413 spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
414 #else
415 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
416 #endif
417 msg("Dumping %s ", disk);
418 if (dt != NULL)
419 msgtail("(%s) ", dt->fs_file);
420 if (host)
421 msgtail("to %s on host %s\n", tape, host);
422 else
423 msgtail("to %s\n", tape);
424 msg("Label: %s\n", labelstr);
425
426 #ifdef __linux__
427 retval = dump_fs_open(disk, &fs);
428 if (retval) {
429 com_err(disk, retval, "while opening filesystem");
430 if (retval == EXT2_ET_REV_TOO_HIGH)
431 printf ("Get a newer version of dump!\n");
432 exit(X_STARTUP);
433 }
434 if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
435 com_err(disk, retval, "while opening filesystem");
436 printf ("Get a newer version of dump!\n");
437 exit(X_STARTUP);
438 }
439 if ((diskfd = open(disk, O_RDONLY)) < 0) {
440 msg("Cannot open %s\n", disk);
441 exit(X_STARTUP);
442 }
443 sync();
444 dev_bsize = DEV_BSIZE;
445 dev_bshift = ffs(dev_bsize) - 1;
446 if (dev_bsize != (1 << dev_bshift))
447 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
448 tp_bshift = ffs(TP_BSIZE) - 1;
449 if (TP_BSIZE != (1 << tp_bshift))
450 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
451 maxino = fs->super->s_inodes_count;
452 #if 0
453 spcl.c_flags |= DR_NEWINODEFMT;
454 #endif
455 #else /* __linux __*/
456 if ((diskfd = open(disk, O_RDONLY)) < 0) {
457 msg("Cannot open %s\n", disk);
458 exit(X_STARTUP);
459 }
460 sync();
461 sblock = (struct fs *)sblock_buf;
462 bread(SBOFF, (char *) sblock, SBSIZE);
463 if (sblock->fs_magic != FS_MAGIC)
464 quit("bad sblock magic number\n");
465 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
466 dev_bshift = ffs(dev_bsize) - 1;
467 if (dev_bsize != (1 << dev_bshift))
468 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
469 tp_bshift = ffs(TP_BSIZE) - 1;
470 if (TP_BSIZE != (1 << tp_bshift))
471 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
472 #ifdef FS_44INODEFMT
473 if (sblock->fs_inodefmt >= FS_44INODEFMT)
474 spcl.c_flags |= DR_NEWINODEFMT;
475 #endif
476 maxino = sblock->fs_ipg * sblock->fs_ncg;
477 #endif /* __linux__ */
478 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
479 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
480 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
481 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
482 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
483
484 nonodump = spcl.c_level < honorlevel;
485
486 #if defined(SIGINFO)
487 (void)signal(SIGINFO, statussig);
488 #endif
489
490 msg("mapping (Pass I) [regular files]\n");
491 #ifdef __linux__
492 if (directory[0] == 0)
493 anydirskipped = mapfiles(maxino, &tapesize);
494 else
495 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
496 #else
497 anydirskipped = mapfiles(maxino, &tapesize);
498 #endif
499
500 msg("mapping (Pass II) [directories]\n");
501 while (anydirskipped) {
502 anydirskipped = mapdirs(maxino, &tapesize);
503 }
504
505 if (pipeout || unlimited) {
506 tapesize += 10; /* 10 trailer blocks */
507 msg("estimated %ld tape blocks.\n", tapesize);
508 } else {
509 double fetapes;
510
511 if (blocksperfile)
512 fetapes = (double) tapesize / blocksperfile;
513 else if (cartridge) {
514 /* Estimate number of tapes, assuming streaming stops at
515 the end of each block written, and not in mid-block.
516 Assume no erroneous blocks; this can be compensated
517 for with an artificially low tape size. */
518 fetapes =
519 ( (double) tapesize /* blocks */
520 * TP_BSIZE /* bytes/block */
521 * (1.0/density) /* 0.1" / byte " */
522 +
523 (double) tapesize /* blocks */
524 * (1.0/ntrec) /* streaming-stops per block */
525 * 15.48 /* 0.1" / streaming-stop " */
526 ) * (1.0 / tsize ); /* tape / 0.1" " */
527 } else {
528 /* Estimate number of tapes, for old fashioned 9-track
529 tape */
530 int tenthsperirg = (density == 625) ? 3 : 7;
531 fetapes =
532 ( (double) tapesize /* blocks */
533 * TP_BSIZE /* bytes / block */
534 * (1.0/density) /* 0.1" / byte " */
535 +
536 (double) tapesize /* blocks */
537 * (1.0/ntrec) /* IRG's / block */
538 * tenthsperirg /* 0.1" / IRG " */
539 ) * (1.0 / tsize ); /* tape / 0.1" " */
540 }
541 etapes = fetapes; /* truncating assignment */
542 etapes++;
543 /* count the dumped inodes map on each additional tape */
544 tapesize += (etapes - 1) *
545 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
546 tapesize += etapes + 10; /* headers + 10 trailer blks */
547 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
548 tapesize, fetapes);
549 }
550
551 /*
552 * Allocate tape buffer.
553 */
554 if (!alloctape())
555 quit(
556 "can't allocate tape buffers - try a smaller blocking factor.\n");
557
558 startnewtape(1);
559 #ifdef __linux__
560 (void)time4(&(tstart_writing));
561 #else
562 (void)time((time_t *)&(tstart_writing));
563 #endif
564 dumpmap(usedinomap, TS_CLRI, maxino - 1);
565
566 msg("dumping (Pass III) [directories]\n");
567 dirty = 0; /* XXX just to get gcc to shut up */
568 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
569 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
570 dirty = *map++;
571 else
572 dirty >>= 1;
573 if ((dirty & 1) == 0)
574 continue;
575 /*
576 * Skip directory inodes deleted and maybe reallocated
577 */
578 dp = getino(ino);
579 if ((dp->di_mode & IFMT) != IFDIR)
580 continue;
581 #ifdef __linux__
582 (void)dumpdirino(dp, ino);
583 #else
584 (void)dumpino(dp, ino);
585 #endif
586 }
587
588 msg("dumping (Pass IV) [regular files]\n");
589 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
590 int mode;
591
592 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
593 dirty = *map++;
594 else
595 dirty >>= 1;
596 if ((dirty & 1) == 0)
597 continue;
598 /*
599 * Skip inodes deleted and reallocated as directories.
600 */
601 dp = getino(ino);
602 mode = dp->di_mode & IFMT;
603 if (mode == IFDIR)
604 continue;
605 (void)dumpino(dp, ino);
606 }
607
608 #ifdef __linux__
609 (void)time4(&(tend_writing));
610 #else
611 (void)time((time_t *)&(tend_writing));
612 #endif
613 spcl.c_type = TS_END;
614 for (i = 0; i < ntrec; i++)
615 writeheader(maxino - 1);
616 if (pipeout)
617 msg("DUMP: %ld tape blocks\n", spcl.c_tapea);
618 else
619 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
620 spcl.c_tapea, spcl.c_volume);
621
622 /* report dump performance, avoid division through zero */
623 if (tend_writing - tstart_writing == 0)
624 msg("finished in less than a second\n");
625 else
626 msg("finished in %d seconds, throughput %d KBytes/sec\n",
627 tend_writing - tstart_writing,
628 spcl.c_tapea / (tend_writing - tstart_writing));
629
630 tnow = do_stats();
631 putdumptime();
632 #ifdef __linux__
633 msg("DUMP: Date of this level %c dump: %s", level,
634 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
635 #else
636 msg("DUMP: Date of this level %c dump: %s", level,
637 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
638 #endif
639 msg("DUMP: Date this dump completed: %s", ctime(&tnow));
640
641 msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate / tapeno);
642
643 trewind();
644 broadcast("DUMP IS DONE!\7\7\n");
645 msg("DUMP IS DONE\n");
646 Exit(X_FINOK);
647 /* NOTREACHED */
648 return 0; /* gcc - shut up */
649 }
650
651 static void
652 usage(void)
653 {
654 char white[MAXPATHLEN];
655 int i;
656
657 strncpy(white, __progname, MAXPATHLEN-1);
658 white[MAXPATHLEN-1] = '\0';
659 for (i=0; i<MAXPATHLEN; ++i)
660 if (white[i] != '\0') white[i] = ' ';
661
662 fprintf(stderr,
663 "%s %s\n", __progname, _DUMP_VERSION);
664 fprintf(stderr,
665 "usage:\t%s [-0123456789ac"
666 #ifdef KERBEROS
667 "k"
668 #endif
669 "Mnu] [-B records] [-b blocksize] [-d density]\n"
670 "\t%s [-f file] [-h level] [-s feet] [-T date] filesystem\n"
671 "\t%s [-W | -w]\n", __progname, white, __progname);
672 exit(X_STARTUP);
673 }
674
675 /*
676 * Pick up a numeric argument. It must be nonnegative and in the given
677 * range (except that a vmax of 0 means unlimited).
678 */
679 static long
680 numarg(const char *meaning, long vmin, long vmax)
681 {
682 char *p;
683 long val;
684
685 val = strtol(optarg, &p, 10);
686 if (*p)
687 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
688 if (val < vmin || (vmax && val > vmax))
689 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
690 return (val);
691 }
692
693 void
694 sig(int signo)
695 {
696 switch(signo) {
697 case SIGALRM:
698 case SIGBUS:
699 case SIGFPE:
700 case SIGHUP:
701 case SIGTERM:
702 case SIGTRAP:
703 if (pipeout)
704 quit("Signal on pipe: cannot recover\n");
705 msg("Rewriting attempted as response to unknown signal.\n");
706 (void)fflush(stderr);
707 (void)fflush(stdout);
708 close_rewind();
709 exit(X_REWRITE);
710 /* NOTREACHED */
711 case SIGSEGV:
712 msg("SIGSEGV: ABORTING!\n");
713 (void)signal(SIGSEGV, SIG_DFL);
714 (void)kill(0, SIGSEGV);
715 /* NOTREACHED */
716 }
717 }
718
719 char *
720 rawname(char *cp)
721 {
722 #ifdef __linux__
723 return cp;
724 #else /* __linux__ */
725 static char rawbuf[MAXPATHLEN];
726 char *dp = strrchr(cp, '/');
727
728 if (dp == NULL)
729 return (NULL);
730 *dp = '\0';
731 (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
732 rawbuf[MAXPATHLEN-1] = '\0';
733 *dp = '/';
734 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
735 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
736 return (rawbuf);
737 #endif /* __linux__ */
738 }
739
740 /*
741 * obsolete --
742 * Change set of key letters and ordered arguments into something
743 * getopt(3) will like.
744 */
745 static void
746 obsolete(int *argcp, char **argvp[])
747 {
748 int argc, flags;
749 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
750
751 /* Setup. */
752 argv = *argvp;
753 argc = *argcp;
754
755 /* Return if no arguments or first argument has leading dash. */
756 ap = argv[1];
757 if (argc == 1 || *ap == '-')
758 return;
759
760 /* Allocate space for new arguments. */
761 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
762 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
763 err(X_STARTUP, "malloc new args");
764
765 *nargv++ = *argv;
766 argv += 2;
767
768 for (flags = 0; *ap; ++ap) {
769 switch (*ap) {
770 case 'B':
771 case 'b':
772 case 'd':
773 case 'f':
774 case 'h':
775 case 's':
776 case 'T':
777 if (*argv == NULL) {
778 warnx("option requires an argument -- %c", *ap);
779 usage();
780 }
781 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
782 err(X_STARTUP, "malloc arg");
783 nargv[0][0] = '-';
784 nargv[0][1] = *ap;
785 (void)strcpy(&nargv[0][2], *argv);
786 ++argv;
787 ++nargv;
788 break;
789 default:
790 if (!flags) {
791 *p++ = '-';
792 flags = 1;
793 }
794 *p++ = *ap;
795 break;
796 }
797 }
798
799 /* Terminate flags. */
800 if (flags) {
801 *p = '\0';
802 *nargv++ = flagsp;
803 }
804
805 /* Copy remaining arguments. */
806 while ((*nargv++ = *argv++));
807
808 /* Update argument count. */
809 *argcp = nargv - *argvp - 1;
810 }
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