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Version 0.4b6.
[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 1.3 1999/10/11 12:59:18 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
347 set_operators(); /* /etc/group snarfed */
348 getfstab(); /* /etc/fstab snarfed */
349 /*
350 * disk can be either the full special file name,
351 * the suffix of the special file name,
352 * the special name missing the leading '/',
353 * the file system name with or without the leading '/'.
354 */
355 if ((dt = fstabsearch(disk)) != NULL) {
356 disk = rawname(dt->fs_spec);
357 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
358 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
359 #ifdef __linux__
360 } else {
361 /*
362 * The argument was not found in the fstab
363 * assume that this is a subtree and search for it
364 */
365 #ifdef HAVE_REALPATH
366 if (realpath(disk, pathname) == NULL)
367 #endif
368 strcpy(pathname, disk);
369 dt = fstabsearchdir(pathname, directory);
370 if (dt != NULL) {
371 char name[MAXPATHLEN];
372 (void)sprintf(name, "%s (dir %s)",
373 dt->fs_spec, directory);
374 (void)strncpy(spcl.c_dev, name, NAMELEN);
375 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
376 disk = rawname(dt->fs_spec);
377 } else {
378 (void)strncpy(spcl.c_dev, disk, NAMELEN);
379 (void)strncpy(spcl.c_filesys, "an unlisted file system",
380 NAMELEN);
381 }
382 }
383 #else
384 } else {
385 (void)strncpy(spcl.c_dev, disk, NAMELEN);
386 (void)strncpy(spcl.c_filesys, "an unlisted file system",
387 NAMELEN);
388 }
389 #endif
390 spcl.c_dev[NAMELEN-1]='\0';
391 spcl.c_filesys[NAMELEN-1]='\0';
392 (void)strncpy(spcl.c_label, labelstr, sizeof(spcl.c_label) - 1);
393 (void)gethostname(spcl.c_host, NAMELEN);
394 spcl.c_level = level - '0';
395 spcl.c_type = TS_TAPE;
396 if (!Tflag)
397 getdumptime(); /* dumpdates snarfed */
398
399 msg("Date of this level %c dump: %s", level,
400 #ifdef __linux
401 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
402 #else
403 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
404 #endif
405 msg("Date of last level %c dump: %s", lastlevel,
406 #ifdef __linux__
407 spcl.c_ddate == 0 ? "the epoch\n" : ctime4(&spcl.c_ddate));
408 #else
409 spcl.c_ddate == 0 ? "the epoch\n" : ctime(&spcl.c_ddate));
410 #endif
411 msg("Dumping %s ", disk);
412 if (dt != NULL)
413 msgtail("(%s) ", dt->fs_file);
414 if (host)
415 msgtail("to %s on host %s\n", tape, host);
416 else
417 msgtail("to %s\n", tape);
418 msg("Label: %s\n", labelstr);
419
420 #ifdef __linux__
421 retval = ext2fs_open(disk, 0, 0, 0, unix_io_manager, &fs);
422 if (retval) {
423 com_err(disk, retval, "while opening filesystem");
424 if (retval == EXT2_ET_REV_TOO_HIGH)
425 printf ("Get a newer version of dump!\n");
426 exit(X_STARTUP);
427 }
428 if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
429 com_err(disk, retval, "while opening filesystem");
430 printf ("Get a newer version of dump!\n");
431 exit(X_STARTUP);
432 }
433 if ((diskfd = open(disk, O_RDONLY)) < 0) {
434 msg("Cannot open %s\n", disk);
435 exit(X_STARTUP);
436 }
437 sync();
438 dev_bsize = DEV_BSIZE;
439 dev_bshift = ffs(dev_bsize) - 1;
440 if (dev_bsize != (1 << dev_bshift))
441 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
442 tp_bshift = ffs(TP_BSIZE) - 1;
443 if (TP_BSIZE != (1 << tp_bshift))
444 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
445 maxino = fs->super->s_inodes_count;
446 #if 0
447 spcl.c_flags |= DR_NEWINODEFMT;
448 #endif
449 #else /* __linux __*/
450 if ((diskfd = open(disk, O_RDONLY)) < 0) {
451 msg("Cannot open %s\n", disk);
452 exit(X_STARTUP);
453 }
454 sync();
455 sblock = (struct fs *)sblock_buf;
456 bread(SBOFF, (char *) sblock, SBSIZE);
457 if (sblock->fs_magic != FS_MAGIC)
458 quit("bad sblock magic number\n");
459 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
460 dev_bshift = ffs(dev_bsize) - 1;
461 if (dev_bsize != (1 << dev_bshift))
462 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
463 tp_bshift = ffs(TP_BSIZE) - 1;
464 if (TP_BSIZE != (1 << tp_bshift))
465 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
466 #ifdef FS_44INODEFMT
467 if (sblock->fs_inodefmt >= FS_44INODEFMT)
468 spcl.c_flags |= DR_NEWINODEFMT;
469 #endif
470 maxino = sblock->fs_ipg * sblock->fs_ncg;
471 #endif /* __linux__ */
472 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
473 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
474 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
475 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
476 tapesize = 3 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
477
478 nonodump = spcl.c_level < honorlevel;
479
480 #if defined(SIGINFO)
481 (void)signal(SIGINFO, statussig);
482 #endif
483
484 msg("mapping (Pass I) [regular files]\n");
485 #ifdef __linux__
486 if (directory[0] == 0)
487 anydirskipped = mapfiles(maxino, &tapesize);
488 else
489 anydirskipped = mapfilesfromdir(maxino, &tapesize, directory);
490 #else
491 anydirskipped = mapfiles(maxino, &tapesize);
492 #endif
493
494 msg("mapping (Pass II) [directories]\n");
495 while (anydirskipped) {
496 anydirskipped = mapdirs(maxino, &tapesize);
497 }
498
499 if (pipeout || unlimited) {
500 tapesize += 10; /* 10 trailer blocks */
501 msg("estimated %ld tape blocks.\n", tapesize);
502 } else {
503 double fetapes;
504
505 if (blocksperfile)
506 fetapes = (double) tapesize / blocksperfile;
507 else if (cartridge) {
508 /* Estimate number of tapes, assuming streaming stops at
509 the end of each block written, and not in mid-block.
510 Assume no erroneous blocks; this can be compensated
511 for with an artificially low tape size. */
512 fetapes =
513 ( (double) tapesize /* blocks */
514 * TP_BSIZE /* bytes/block */
515 * (1.0/density) /* 0.1" / byte " */
516 +
517 (double) tapesize /* blocks */
518 * (1.0/ntrec) /* streaming-stops per block */
519 * 15.48 /* 0.1" / streaming-stop " */
520 ) * (1.0 / tsize ); /* tape / 0.1" " */
521 } else {
522 /* Estimate number of tapes, for old fashioned 9-track
523 tape */
524 int tenthsperirg = (density == 625) ? 3 : 7;
525 fetapes =
526 ( (double) tapesize /* blocks */
527 * TP_BSIZE /* bytes / block */
528 * (1.0/density) /* 0.1" / byte " */
529 +
530 (double) tapesize /* blocks */
531 * (1.0/ntrec) /* IRG's / block */
532 * tenthsperirg /* 0.1" / IRG " */
533 ) * (1.0 / tsize ); /* tape / 0.1" " */
534 }
535 etapes = fetapes; /* truncating assignment */
536 etapes++;
537 /* count the dumped inodes map on each additional tape */
538 tapesize += (etapes - 1) *
539 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
540 tapesize += etapes + 10; /* headers + 10 trailer blks */
541 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
542 tapesize, fetapes);
543 }
544
545 /*
546 * Allocate tape buffer.
547 */
548 if (!alloctape())
549 quit(
550 "can't allocate tape buffers - try a smaller blocking factor.\n");
551
552 startnewtape(1);
553 (void)time((time_t *)&(tstart_writing));
554 dumpmap(usedinomap, TS_CLRI, maxino - 1);
555
556 msg("dumping (Pass III) [directories]\n");
557 dirty = 0; /* XXX just to get gcc to shut up */
558 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
559 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
560 dirty = *map++;
561 else
562 dirty >>= 1;
563 if ((dirty & 1) == 0)
564 continue;
565 /*
566 * Skip directory inodes deleted and maybe reallocated
567 */
568 dp = getino(ino);
569 if ((dp->di_mode & IFMT) != IFDIR)
570 continue;
571 #ifdef __linux__
572 (void)dumpdirino(dp, ino);
573 #else
574 (void)dumpino(dp, ino);
575 #endif
576 }
577
578 msg("dumping (Pass IV) [regular files]\n");
579 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
580 int mode;
581
582 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
583 dirty = *map++;
584 else
585 dirty >>= 1;
586 if ((dirty & 1) == 0)
587 continue;
588 /*
589 * Skip inodes deleted and reallocated as directories.
590 */
591 dp = getino(ino);
592 mode = dp->di_mode & IFMT;
593 if (mode == IFDIR)
594 continue;
595 (void)dumpino(dp, ino);
596 }
597
598 (void)time((time_t *)&(tend_writing));
599 spcl.c_type = TS_END;
600 for (i = 0; i < ntrec; i++)
601 writeheader(maxino - 1);
602 if (pipeout)
603 msg("DUMP: %ld tape blocks\n", spcl.c_tapea);
604 else
605 msg("DUMP: %ld tape blocks on %d volumes(s)\n",
606 spcl.c_tapea, spcl.c_volume);
607
608 /* report dump performance, avoid division through zero */
609 if (tend_writing - tstart_writing == 0)
610 msg("finished in less than a second\n");
611 else
612 msg("finished in %d seconds, throughput %d KBytes/sec\n",
613 tend_writing - tstart_writing,
614 spcl.c_tapea / (tend_writing - tstart_writing));
615
616 tnow = do_stats();
617 putdumptime();
618 #ifdef __linux__
619 msg("DUMP: Date of this level %c dump: %s", level,
620 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
621 #else
622 msg("DUMP: Date of this level %c dump: %s", level,
623 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
624 #endif
625 msg("DUMP: Date this dump completed: %s", ctime(&tnow));
626
627 msg("DUMP: Average transfer rate: %ld KB/s\n", xferrate / tapeno);
628
629 trewind();
630 broadcast("DUMP IS DONE!\7\7\n");
631 msg("DUMP IS DONE\n");
632 Exit(X_FINOK);
633 /* NOTREACHED */
634 return 0; /* gcc - shut up */
635 }
636
637 static void
638 usage(void)
639 {
640 fprintf(stderr,
641 "usage: %s [-0123456789ac"
642 #ifdef KERBEROS
643 "k"
644 #endif
645 "nu] [-B records] [-b blocksize] [-d density] [-f file]\n"
646 " [-h level] [-s feet] [-T date] filesystem\n"
647 " %s [-W | -w]\n", __progname, __progname);
648 exit(X_STARTUP);
649 }
650
651 /*
652 * Pick up a numeric argument. It must be nonnegative and in the given
653 * range (except that a vmax of 0 means unlimited).
654 */
655 static long
656 numarg(const char *meaning, long vmin, long vmax)
657 {
658 char *p;
659 long val;
660
661 val = strtol(optarg, &p, 10);
662 if (*p)
663 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
664 if (val < vmin || (vmax && val > vmax))
665 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
666 return (val);
667 }
668
669 void
670 sig(int signo)
671 {
672 switch(signo) {
673 case SIGALRM:
674 case SIGBUS:
675 case SIGFPE:
676 case SIGHUP:
677 case SIGTERM:
678 case SIGTRAP:
679 if (pipeout)
680 quit("Signal on pipe: cannot recover\n");
681 msg("Rewriting attempted as response to unknown signal.\n");
682 (void)fflush(stderr);
683 (void)fflush(stdout);
684 close_rewind();
685 exit(X_REWRITE);
686 /* NOTREACHED */
687 case SIGSEGV:
688 msg("SIGSEGV: ABORTING!\n");
689 (void)signal(SIGSEGV, SIG_DFL);
690 (void)kill(0, SIGSEGV);
691 /* NOTREACHED */
692 }
693 }
694
695 char *
696 rawname(char *cp)
697 {
698 #ifdef __linux__
699 return cp;
700 #else /* __linux__ */
701 static char rawbuf[MAXPATHLEN];
702 char *dp = strrchr(cp, '/');
703
704 if (dp == NULL)
705 return (NULL);
706 *dp = '\0';
707 (void)strncpy(rawbuf, cp, MAXPATHLEN - 1);
708 rawbuf[MAXPATHLEN-1] = '\0';
709 *dp = '/';
710 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
711 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
712 return (rawbuf);
713 #endif /* __linux__ */
714 }
715
716 /*
717 * obsolete --
718 * Change set of key letters and ordered arguments into something
719 * getopt(3) will like.
720 */
721 static void
722 obsolete(int *argcp, char **argvp[])
723 {
724 int argc, flags;
725 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
726
727 /* Setup. */
728 argv = *argvp;
729 argc = *argcp;
730
731 /* Return if no arguments or first argument has leading dash. */
732 ap = argv[1];
733 if (argc == 1 || *ap == '-')
734 return;
735
736 /* Allocate space for new arguments. */
737 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
738 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
739 err(X_STARTUP, "malloc new args");
740
741 *nargv++ = *argv;
742 argv += 2;
743
744 for (flags = 0; *ap; ++ap) {
745 switch (*ap) {
746 case 'B':
747 case 'b':
748 case 'd':
749 case 'f':
750 case 'h':
751 case 's':
752 case 'T':
753 if (*argv == NULL) {
754 warnx("option requires an argument -- %c", *ap);
755 usage();
756 }
757 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
758 err(X_STARTUP, "malloc arg");
759 nargv[0][0] = '-';
760 nargv[0][1] = *ap;
761 (void)strcpy(&nargv[0][2], *argv);
762 ++argv;
763 ++nargv;
764 break;
765 default:
766 if (!flags) {
767 *p++ = '-';
768 flags = 1;
769 }
770 *p++ = *ap;
771 break;
772 }
773 }
774
775 /* Terminate flags. */
776 if (flags) {
777 *p = '\0';
778 *nargv++ = flagsp;
779 }
780
781 /* Copy remaining arguments. */
782 while ((*nargv++ = *argv++));
783
784 /* Update argument count. */
785 *argcp = nargv - *argvp - 1;
786 }
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