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Version 0.4b7.
[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 /*-
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 copyright[] =
44 "@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
45 The Regents of the University of California. All rights reserved.\n";
46 #endif /* not lint */
47
48 #ifndef lint
49 #if 0
50 static char sccsid[] = "@(#)main.c 8.6 (Berkeley) 5/1/95";
51 #endif
52 static const char rcsid[] =
53 "$Id: main.c,v 1.4 1999/10/11 13:08:07 stelian Exp $";
54 #endif /* not lint */
55
56 #include <sys/param.h>
57 #include <sys/time.h>
58 #ifdef __linux__
59 #include <linux/ext2_fs.h>
60 #include <sys/stat.h>
61 #include <bsdcompat.h>
62 #else
63 #ifdef sunos
64 #include <sys/vnode.h>
65
66 #include <ufs/inode.h>
67 #include <ufs/fs.h>
68 #else
69 #include <ufs/ufs/dinode.h>
70 #include <ufs/ffs/fs.h>
71 #endif
72 #endif
73
74 #include <protocols/dumprestore.h>
75
76 #include <ctype.h>
77 #include <compaterr.h>
78 #include <fcntl.h>
79 #include <fstab.h>
80 #include <signal.h>
81 #include <stdio.h>
82 #include <stdlib.h>
83 #include <string.h>
84 #include <unistd.h>
85
86 #ifdef __linux__
87 #include <ext2fs/ext2fs.h>
88 #endif
89
90 #include "dump.h"
91 #include "pathnames.h"
92
93 #ifndef SBOFF
94 #define SBOFF (SBLOCK * DEV_BSIZE)
95 #endif
96
97 int notify = 0; /* notify operator flag */
98 int blockswritten = 0; /* number of blocks written on current tape */
99 int tapeno = 0; /* current tape number */
100 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
101 int ntrec = NTREC; /* # tape blocks in each tape record */
102 int cartridge = 0; /* Assume non-cartridge tape */
103 int dokerberos = 0; /* Use Kerberos authentication */
104 long dev_bsize = 1; /* recalculated below */
105 long blocksperfile; /* output blocks per file */
106 char *host = NULL; /* remote host (if any) */
107
108 #ifdef __linux__
109 char *__progname;
110 #endif
111
112 int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */
113 static long numarg __P((const char *, long, long));
114 static void obsolete __P((int *, char **[]));
115 static void usage __P((void));
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[NAME_MAX];
131 char pathname[NAME_MAX];
132 #endif
133 time_t tnow;
134 char labelstr[LBLSIZE];
135
136 spcl.c_date = 0;
137 #ifdef __linux__
138 (void)time4(&spcl.c_date);
139 #else
140 (void)time((time_t *)&spcl.c_date);
141 #endif
142
143 #ifdef __linux__
144 __progname = argv[0];
145 directory[0] = 0;
146 initialize_ext2_error_table();
147 #endif
148
149 tsize = 0; /* Default later, based on 'c' option for cart tapes */
150 if ((tape = getenv("TAPE")) == NULL)
151 tape = _PATH_DEFTAPE;
152 dumpdates = _PATH_DUMPDATES;
153 temp = _PATH_DTMP;
154 strcpy(labelstr, "none"); /* XXX safe strcpy. */
155 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
156 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
157 level = '0';
158
159 if (argc < 2)
160 usage();
161
162 obsolete(&argc, &argv);
163 #ifdef KERBEROS
164 #define optstring "0123456789aB:b:cd:f:h:kL:ns:T:uWw"
165 #else
166 #define optstring "0123456789aB:b:cd:f:h:L:ns:T:uWw"
167 #endif
168 while ((ch = getopt(argc, argv, optstring)) != -1)
169 #undef optstring
170 switch (ch) {
171 /* dump level */
172 case '0': case '1': case '2': case '3': case '4':
173 case '5': case '6': case '7': case '8': case '9':
174 level = ch;
175 break;
176
177 case 'a': /* `auto-size', Write to EOM. */
178 unlimited = 1;
179 break;
180
181 case 'B': /* blocks per output file */
182 blocksperfile = numarg("number of blocks per file",
183 1L, 0L);
184 break;
185
186 case 'b': /* blocks per tape write */
187 ntrec = numarg("number of blocks per write",
188 1L, 1000L);
189 if (ntrec > maxbsize/1024) {
190 msg("Please choose a blocksize <= %dKB\n",
191 maxbsize/1024);
192 exit(X_STARTUP);
193 }
194 bflag = 1;
195 break;
196
197 case 'c': /* Tape is cart. not 9-track */
198 cartridge = 1;
199 break;
200
201 case 'd': /* density, in bits per inch */
202 density = numarg("density", 10L, 327670L) / 10;
203 if (density >= 625 && !bflag)
204 ntrec = HIGHDENSITYTREC;
205 break;
206
207 case 'f': /* output file */
208 tape = optarg;
209 break;
210
211 case 'h':
212 honorlevel = numarg("honor level", 0L, 10L);
213 break;
214
215 #ifdef KERBEROS
216 case 'k':
217 dokerberos = 1;
218 break;
219 #endif
220
221 case 'L':
222 /*
223 * Note that although there are LBLSIZE characters,
224 * the last must be '\0', so the limit on strlen()
225 * is really LBLSIZE-1.
226 */
227 strncpy(labelstr, optarg, LBLSIZE);
228 labelstr[LBLSIZE-1] = '\0';
229 if (strlen(optarg) > LBLSIZE-1) {
230 msg(
231 "WARNING Label `%s' is larger than limit of %d characters.\n",
232 optarg, LBLSIZE-1);
233 msg("WARNING: Using truncated label `%s'.\n",
234 labelstr);
235 }
236 break;
237
238 case 'n': /* notify operators */
239 notify = 1;
240 break;
241
242 case 's': /* tape size, feet */
243 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
244 break;
245
246 case 'T': /* time of last dump */
247 spcl.c_ddate = unctime(optarg);
248 if (spcl.c_ddate < 0) {
249 (void)fprintf(stderr, "bad time \"%s\"\n",
250 optarg);
251 exit(X_STARTUP);
252 }
253 Tflag = 1;
254 lastlevel = '?';
255 break;
256
257 case 'u': /* update dumpdates */
258 uflag = 1;
259 break;
260
261 case 'W': /* what to do */
262 case 'w':
263 lastdump(ch);
264 exit(X_FINOK); /* do nothing else */
265
266 default:
267 usage();
268 }
269 argc -= optind;
270 argv += optind;
271
272 if (argc < 1) {
273 (void)fprintf(stderr, "Must specify disk or filesystem\n");
274 exit(X_STARTUP);
275 }
276 disk = *argv++;
277 argc--;
278 if (argc >= 1) {
279 (void)fprintf(stderr, "Unknown arguments to dump:");
280 while (argc--)
281 (void)fprintf(stderr, " %s", *argv++);
282 (void)fprintf(stderr, "\n");
283 exit(X_STARTUP);
284 }
285 if (Tflag && uflag) {
286 (void)fprintf(stderr,
287 "You cannot use the T and u flags together.\n");
288 exit(X_STARTUP);
289 }
290 if (strcmp(tape, "-") == 0) {
291 pipeout++;
292 tape = "standard output";
293 }
294
295 if (blocksperfile)
296 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
297 else if (!unlimited) {
298 /*
299 * Determine how to default tape size and density
300 *
301 * density tape size
302 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
303 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
304 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
305 * (450*4 - slop)
306 * hilit19 hits again: "
307 */
308 if (density == 0)
309 density = cartridge ? 100 : 160;
310 if (tsize == 0)
311 tsize = cartridge ? 1700L*120L : 2300L*120L;
312 }
313
314 if (strchr(tape, ':')) {
315 host = tape;
316 tape = strchr(host, ':');
317 *tape++ = '\0';
318 #ifdef RDUMP
319 if (index(tape, '\n')) {
320 (void)fprintf(stderr, "invalid characters in tape\n");
321 exit(X_STARTUP);
322 }
323 if (rmthost(host) == 0)
324 exit(X_STARTUP);
325 #else
326 (void)fprintf(stderr, "remote dump not enabled\n");
327 exit(X_STARTUP);
328 #endif
329 }
330 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
331
332 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
333 signal(SIGHUP, sig);
334 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
335 signal(SIGTRAP, sig);
336 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
337 signal(SIGFPE, sig);
338 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
339 signal(SIGBUS, sig);
340 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
341 signal(SIGSEGV, sig);
342 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
343 signal(SIGTERM, sig);
344 if (signal(SIGINT, interrupt) == SIG_IGN)
345 signal(SIGINT, SIG_IGN);
346 set_operators(); /* /etc/group snarfed */
347 getfstab(); /* /etc/fstab snarfed */
348 /*
349 * disk can be either the full special file name,
350 * the suffix of the special file name,
351 * the special name missing the leading '/',
352 * the file system name with or without the leading '/'.
353 */
354 if ((dt = fstabsearch(disk)) != NULL) {
355 disk = rawname(dt->fs_spec);
356 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
357 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
358 #ifdef __linux__
359 } else {
360 /*
361 * The argument was not found in the fstab
362 * assume that this is a subtree and search for it
363 */
364 #ifdef HAVE_REALPATH
365 if (realpath(disk, pathname) == NULL)
366 #endif
367 strcpy(pathname, disk);
368 dt = fstabsearchdir(pathname, directory);
369 if (dt != NULL) {
370 char name[MAXPATHLEN];
371 (void)sprintf(name, "%s (dir %s)",
372 dt->fs_spec, directory);
373 (void)strncpy(spcl.c_dev, name, NAMELEN);
374 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
375 disk = rawname(dt->fs_spec);
376 } else {
377 (void)strncpy(spcl.c_dev, disk, NAMELEN);
378 (void)strncpy(spcl.c_filesys, "an unlisted file system",
379 NAMELEN);
380 }
381 }
382 #else
383 } else {
384 (void)strncpy(spcl.c_dev, disk, NAMELEN);
385 (void)strncpy(spcl.c_filesys, "an unlisted file system",
386 NAMELEN);
387 }
388 #endif
389 spcl.c_dev[NAMELEN-1]='\0';
390 spcl.c_filesys[NAMELEN-1]='\0';
391 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
392 (void)gethostname(spcl.c_host, NAMELEN);
393 spcl.c_level = level - '0';
394 spcl.c_type = TS_TAPE;
395 if (!Tflag)
396 getdumptime(uflag); /* dumpdates snarfed */
397
398 if (spcl.c_ddate == 0 && spcl.c_level) {
399 msg("WARNING: There is no inferior level dump on this filesystem\n");
400 msg("WARNING: Assuming a level 0 dump by default\n");
401 level = '0';
402 spcl.c_level = 0;
403 }
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 = ext2fs_open(disk, 0, 0, 0, unix_io_manager, &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 fprintf(stderr,
655 "usage: %s [-0123456789ac"
656 #ifdef KERBEROS
657 "k"
658 #endif
659 "nu] [-B records] [-b blocksize] [-d density] [-f file]\n"
660 " [-h level] [-s feet] [-T date] filesystem\n"
661 " %s [-W | -w]\n", __progname, __progname);
662 exit(X_STARTUP);
663 }
664
665 /*
666 * Pick up a numeric argument. It must be nonnegative and in the given
667 * range (except that a vmax of 0 means unlimited).
668 */
669 static long
670 numarg(const char *meaning, long vmin, long vmax)
671 {
672 char *p;
673 long val;
674
675 val = strtol(optarg, &p, 10);
676 if (*p)
677 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
678 if (val < vmin || (vmax && val > vmax))
679 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
680 return (val);
681 }
682
683 void
684 sig(int signo)
685 {
686 switch(signo) {
687 case SIGALRM:
688 case SIGBUS:
689 case SIGFPE:
690 case SIGHUP:
691 case SIGTERM:
692 case SIGTRAP:
693 if (pipeout)
694 quit("Signal on pipe: cannot recover\n");
695 msg("Rewriting attempted as response to unknown signal.\n");
696 (void)fflush(stderr);
697 (void)fflush(stdout);
698 close_rewind();
699 exit(X_REWRITE);
700 /* NOTREACHED */
701 case SIGSEGV:
702 msg("SIGSEGV: ABORTING!\n");
703 (void)signal(SIGSEGV, SIG_DFL);
704 (void)kill(0, SIGSEGV);
705 /* NOTREACHED */
706 }
707 }
708
709 char *
710 rawname(char *cp)
711 {
712 #ifdef __linux__
713 return cp;
714 #else /* __linux__ */
715 static char rawbuf[MAXPATHLEN];
716 char *dp = strrchr(cp, '/');
717
718 if (dp == NULL)
719 return (NULL);
720 *dp = '\0';
721 (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
722 rawbuf[MAXPATHLEN-1] = '\0';
723 *dp = '/';
724 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
725 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
726 return (rawbuf);
727 #endif /* __linux__ */
728 }
729
730 /*
731 * obsolete --
732 * Change set of key letters and ordered arguments into something
733 * getopt(3) will like.
734 */
735 static void
736 obsolete(int *argcp, char **argvp[])
737 {
738 int argc, flags;
739 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
740
741 /* Setup. */
742 argv = *argvp;
743 argc = *argcp;
744
745 /* Return if no arguments or first argument has leading dash. */
746 ap = argv[1];
747 if (argc == 1 || *ap == '-')
748 return;
749
750 /* Allocate space for new arguments. */
751 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
752 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
753 err(X_STARTUP, "malloc new args");
754
755 *nargv++ = *argv;
756 argv += 2;
757
758 for (flags = 0; *ap; ++ap) {
759 switch (*ap) {
760 case 'B':
761 case 'b':
762 case 'd':
763 case 'f':
764 case 'h':
765 case 's':
766 case 'T':
767 if (*argv == NULL) {
768 warnx("option requires an argument -- %c", *ap);
769 usage();
770 }
771 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
772 err(X_STARTUP, "malloc arg");
773 nargv[0][0] = '-';
774 nargv[0][1] = *ap;
775 (void)strcpy(&nargv[0][2], *argv);
776 ++argv;
777 ++nargv;
778 break;
779 default:
780 if (!flags) {
781 *p++ = '-';
782 flags = 1;
783 }
784 *p++ = *ap;
785 break;
786 }
787 }
788
789 /* Terminate flags. */
790 if (flags) {
791 *p = '\0';
792 *nargv++ = flagsp;
793 }
794
795 /* Copy remaining arguments. */
796 while ((*nargv++ = *argv++));
797
798 /* Update argument count. */
799 *argcp = nargv - *argvp - 1;
800 }
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