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SIGXFSZ fixes.
[dump.git] / dump / main.c
1 /*
2 * Ported to Linux's Second Extended File System as part of the
3 * dump and restore backup suit
4 * Remy Card <card@Linux.EU.Org>, 1994-1997
5 * Stelian Pop <pop@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - Alcôve <www.alcove.fr>, 2000
7 */
8
9 /*-
10 * Copyright (c) 1980, 1991, 1993, 1994
11 * The Regents of the University of California. All rights reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 */
41
42 #ifndef lint
43 static const char rcsid[] =
44 "$Id: main.c,v 1.64 2002/01/10 09:02:54 stelian Exp $";
45 #endif /* not lint */
46
47 #include <config.h>
48 #include <compatlfs.h>
49 #include <ctype.h>
50 #include <compaterr.h>
51 #include <fcntl.h>
52 #include <fstab.h>
53 #include <signal.h>
54 #include <stdio.h>
55 #include <stdlib.h>
56 #include <string.h>
57 #include <unistd.h>
58
59 #include <sys/param.h>
60 #include <sys/time.h>
61 #include <time.h>
62 #ifdef __linux__
63 #include <linux/fs.h>
64 #ifdef HAVE_EXT2FS_EXT2_FS_H
65 #include <ext2fs/ext2_fs.h>
66 #else
67 #include <linux/ext2_fs.h>
68 #endif
69 #include <ext2fs/ext2fs.h>
70 #include <sys/stat.h>
71 #include <bsdcompat.h>
72 #elif defined sunos
73 #include <sys/vnode.h>
74
75 #include <ufs/inode.h>
76 #include <ufs/fs.h>
77 #else
78 #include <ufs/ufs/dinode.h>
79 #include <ufs/ffs/fs.h>
80 #endif
81
82 #include <protocols/dumprestore.h>
83
84 #include "dump.h"
85 #include "pathnames.h"
86 #include "bylabel.h"
87
88 #ifndef SBOFF
89 #define SBOFF (SBLOCK * DEV_BSIZE)
90 #endif
91
92 /*
93 * Dump maps used to describe what is to be dumped.
94 */
95 int mapsize; /* size of the state maps */
96 char *usedinomap; /* map of allocated inodes */
97 char *dumpdirmap; /* map of directories to be dumped */
98 char *dumpinomap; /* map of files to be dumped */
99
100 const char *disk; /* name of the disk file */
101 char tape[MAXPATHLEN];/* name of the tape file */
102 char *tapeprefix; /* prefix of the tape file */
103 char *dumpdates; /* name of the file containing dump date information*/
104 char lastlevel; /* dump level of previous dump */
105 char level; /* dump level of this dump */
106 int bzipflag; /* compression is done using bzlib */
107 int uflag; /* update flag */
108 int Mflag; /* multi-volume flag */
109 int qflag; /* quit on errors flag */
110 int breademax = 32; /* maximum number of bread errors before we quit */
111 char *eot_script; /* end of volume script fiag */
112 int diskfd; /* disk file descriptor */
113 int tapefd; /* tape file descriptor */
114 int pipeout; /* true => output to standard output */
115 int fifoout; /* true => output to fifo */
116 dump_ino_t curino; /* current inumber; used globally */
117 int newtape; /* new tape flag */
118 int density; /* density in 0.1" units */
119 long tapesize; /* estimated tape size, blocks */
120 long tsize; /* tape size in 0.1" units */
121 long asize; /* number of 0.1" units written on current tape */
122 int etapes; /* estimated number of tapes */
123 int nonodump; /* if set, do not honor UF_NODUMP user flags */
124 int unlimited; /* if set, write to end of medium */
125 int compressed; /* if set, dump is to be compressed */
126 long long bytes_written;/* total bytes written to tape */
127 long uncomprblks; /* uncompressed blocks written to tape */
128 int notify; /* notify operator flag */
129 int blockswritten; /* number of blocks written on current tape */
130 int tapeno; /* current tape number */
131 time_t tstart_writing; /* when started writing the first tape block */
132 time_t tend_writing; /* after writing the last tape block */
133 #ifdef __linux__
134 ext2_filsys fs;
135 #else
136 struct fs *sblock; /* the file system super block */
137 char sblock_buf[MAXBSIZE];
138 #endif
139 long xferrate; /* averaged transfer rate of all volumes */
140 long dev_bsize; /* block size of underlying disk device */
141 int dev_bshift; /* log2(dev_bsize) */
142 int tp_bshift; /* log2(TP_BSIZE) */
143
144 #ifdef USE_QFA
145 int gTapeposfd;
146 char *gTapeposfile;
147 char gTps[255];
148 int32_t gThisDumpDate;
149 #endif /* USE_QFA */
150
151 struct dumptime *dthead; /* head of the list version */
152 int nddates; /* number of records (might be zero) */
153 int ddates_in; /* we have read the increment file */
154 struct dumpdates **ddatev; /* the arrayfied version */
155
156 int notify = 0; /* notify operator flag */
157 int blockswritten = 0; /* number of blocks written on current tape */
158 int tapeno = 0; /* current tape number */
159 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
160 int ntrec = NTREC; /* # tape blocks in each tape record */
161 int cartridge = 0; /* Assume non-cartridge tape */
162 #ifdef USE_QFA
163 int tapepos = 0; /* assume no QFA tapeposition needed by user */
164 #endif /* USE_QFA */
165 int dokerberos = 0; /* Use Kerberos authentication */
166 long dev_bsize = 1; /* recalculated below */
167 long blocksperfile; /* output blocks per file */
168 char *host = NULL; /* remote host (if any) */
169 int sizest = 0; /* return size estimate only */
170 int compressed = 0; /* use zlib to compress the output, compress level 1-9 */
171 long long bytes_written = 0; /* total bytes written */
172 long uncomprblks = 0;/* uncompressed blocks written */
173
174 #ifdef __linux__
175 char *__progname;
176 #endif
177
178 int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */
179 static long numarg __P((const char *, long, long));
180 static void obsolete __P((int *, char **[]));
181 static void usage __P((void));
182 static void do_exclude_from_file __P((char *));
183 static void do_exclude_ino_str __P((char *));
184 static void incompat_flags __P((int, char, char));
185
186 static dump_ino_t iexclude_list[IEXCLUDE_MAXNUM];/* the inode exclude list */
187 static int iexclude_num = 0; /* number of elements in the list */
188
189 int
190 main(int argc, char *argv[])
191 {
192 register dump_ino_t ino;
193 register int dirty;
194 register struct dinode *dp;
195 register struct fstab *dt;
196 register char *map;
197 register int ch;
198 int i, anydirskipped;
199 int aflag = 0, bflag = 0, Tflag = 0, honorlevel = 1;
200 dump_ino_t maxino;
201 struct STAT statbuf;
202 dev_t filedev = 0;
203 #ifdef __linux__
204 errcode_t retval;
205 char directory[MAXPATHLEN];
206 char pathname[MAXPATHLEN];
207 #endif
208 time_t tnow;
209 char *diskparam;
210
211 spcl.c_label[0] = '\0';
212 spcl.c_date = time(NULL);
213
214 #ifdef __linux__
215 __progname = argv[0];
216 directory[0] = 0;
217 initialize_ext2_error_table();
218 #endif
219
220 tsize = 0; /* Default later, based on 'c' option for cart tapes */
221 unlimited = 1;
222 eot_script = NULL;
223 if ((tapeprefix = getenv("TAPE")) == NULL)
224 tapeprefix = _PATH_DEFTAPE;
225 dumpdates = _PATH_DUMPDATES;
226 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
227 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
228 level = '0';
229
230 if (argc < 2)
231 usage();
232
233 obsolete(&argc, &argv);
234
235 #ifdef USE_QFA
236 gTapeposfd = -1;
237 #endif /* USE_QFA */
238
239 while ((ch = getopt(argc, argv,
240 "0123456789aB:b:cd:e:E:f:F:h:I:"
241 #ifdef HAVE_BZLIB
242 "j::"
243 #endif
244 "L:"
245 #ifdef KERBEROS
246 "k"
247 #endif
248 "Mnq"
249 #ifdef USE_QFA
250 "Q:"
251 #endif
252 "s:ST:uWw"
253 #ifdef HAVE_ZLIB
254 "z::"
255 #endif
256 )) != -1)
257 switch (ch) {
258 /* dump level */
259 case '0': case '1': case '2': case '3': case '4':
260 case '5': case '6': case '7': case '8': case '9':
261 level = ch;
262 break;
263
264 case 'a': /* `auto-size', Write to EOM. */
265 unlimited = 1;
266 aflag = 1;
267 break;
268
269 case 'B': /* blocks per output file */
270 unlimited = 0;
271 blocksperfile = numarg("number of blocks per file",
272 1L, 0L);
273 break;
274
275 case 'b': /* blocks per tape write */
276 ntrec = numarg("number of blocks per write",
277 1L, 1000L);
278 if (ntrec > maxbsize/1024) {
279 msg("Please choose a blocksize <= %dkB\n",
280 maxbsize/1024);
281 msg("The ENTIRE dump is aborted.\n");
282 exit(X_STARTUP);
283 }
284 bflag = 1;
285 break;
286
287 case 'c': /* Tape is cart. not 9-track */
288 unlimited = 0;
289 cartridge = 1;
290 break;
291
292 case 'd': /* density, in bits per inch */
293 unlimited = 0;
294 density = numarg("density", 10L, 327670L) / 10;
295 if (density >= 625 && !bflag)
296 ntrec = HIGHDENSITYTREC;
297 break;
298
299 /* 04-Feb-00 ILC */
300 case 'e': /* exclude an inode */
301 {
302 char *p = optarg, *q;
303 while ((q = strchr(p, ','))) {
304 *q = '\0';
305 do_exclude_ino_str(p);
306 p = q + 1;
307 }
308 do_exclude_ino_str(p);
309 }
310 break;
311
312 case 'E': /* exclude inodes read from file */
313 do_exclude_from_file(optarg);
314 break;
315
316 case 'f': /* output file */
317 tapeprefix = optarg;
318 break;
319
320 case 'F': /* end of tape script */
321 eot_script = optarg;
322 break;
323
324 case 'h':
325 honorlevel = numarg("honor level", 0L, 10L);
326 break;
327
328 #ifdef HAVE_BZLIB
329 case 'j':
330 compressed = 2;
331 bzipflag = 1;
332 if (optarg)
333 compressed = numarg("compress level", 1L, 9L);
334 break;
335 #endif /* HAVE_BZLIB */
336
337 case 'I':
338 breademax =
339 numarg ("number of errors to ignore", 1L, 0L);
340 break;
341
342 #ifdef KERBEROS
343 case 'k':
344 dokerberos = 1;
345 break;
346 #endif
347
348 case 'L':
349 /*
350 * Note that although there are LBLSIZE characters,
351 * the last must be '\0', so the limit on strlen()
352 * is really LBLSIZE-1.
353 */
354 strncpy(spcl.c_label, optarg, LBLSIZE);
355 spcl.c_label[LBLSIZE-1] = '\0';
356 if (strlen(optarg) > LBLSIZE-1) {
357 msg(
358 "WARNING Label `%s' is larger than limit of %d characters.\n",
359 optarg, LBLSIZE-1);
360 msg("WARNING: Using truncated label `%s'.\n",
361 spcl.c_label);
362 }
363 break;
364
365 case 'M': /* multi-volume flag */
366 Mflag = 1;
367 break;
368
369 case 'n': /* notify operators */
370 notify = 1;
371 break;
372
373 case 'q':
374 qflag = 1;
375 break;
376
377 #ifdef USE_QFA
378 case 'Q': /* create tapeposfile */
379 gTapeposfile = optarg;
380 tapepos = 1;
381 break;
382 #endif /* USE_QFA */
383
384 case 's': /* tape size, feet */
385 unlimited = 0;
386 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
387 break;
388
389 case 'S':
390 sizest = 1; /* return size estimate only */
391 break;
392
393 case 'T': /* time of last dump */
394 spcl.c_ddate = unctime(optarg);
395 if (spcl.c_ddate < 0) {
396 msg("bad time \"%s\"\n", optarg);
397 msg("The ENTIRE dump is aborted.\n");
398 exit(X_STARTUP);
399 }
400 Tflag = 1;
401 lastlevel = '?';
402 break;
403
404 case 'u': /* update dumpdates */
405 uflag = 1;
406 break;
407
408 case 'W': /* what to do */
409 case 'w':
410 lastdump(ch);
411 exit(X_FINOK); /* do nothing else */
412 #ifdef HAVE_ZLIB
413 case 'z':
414 compressed = 2;
415 if (optarg)
416 compressed = numarg("compress level", 1L, 9L);
417 break;
418 #endif /* HAVE_ZLIB */
419
420 default:
421 usage();
422 }
423 argc -= optind;
424 argv += optind;
425
426 if (argc < 1) {
427 msg("Must specify disk or filesystem\n");
428 msg("The ENTIRE dump is aborted.\n");
429 exit(X_STARTUP);
430 }
431 diskparam = *argv++;
432 if (strlen(diskparam) >= MAXPATHLEN) {
433 msg("Disk or filesystem name too long: %s\n", diskparam);
434 msg("The ENTIRE dump is aborted.\n");
435 exit(X_STARTUP);
436 }
437 argc--;
438 incompat_flags(Tflag && uflag, 'T', 'u');
439 incompat_flags(aflag && blocksperfile, 'a', 'B');
440 incompat_flags(aflag && cartridge, 'a', 'c');
441 incompat_flags(aflag && density, 'a', 'd');
442 incompat_flags(aflag && tsize, 'a', 's');
443
444 if (strcmp(tapeprefix, "-") == 0) {
445 pipeout++;
446 tapeprefix = "standard output";
447 }
448
449 if (blocksperfile && !compressed)
450 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
451 else if (!unlimited) {
452 /*
453 * Determine how to default tape size and density
454 *
455 * density tape size
456 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
457 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
458 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
459 * (450*4 - slop)
460 * hilit19 hits again: "
461 */
462 if (density == 0)
463 density = cartridge ? 100 : 160;
464 if (tsize == 0)
465 tsize = cartridge ? 1700L*120L : 2300L*120L;
466 }
467
468 if (strchr(tapeprefix, ':')) {
469 host = tapeprefix;
470 tapeprefix = strchr(host, ':');
471 *tapeprefix++ = '\0';
472 #ifdef RDUMP
473 if (index(tapeprefix, '\n')) {
474 msg("invalid characters in tape\n");
475 msg("The ENTIRE dump is aborted.\n");
476 exit(X_STARTUP);
477 }
478 if (rmthost(host) == 0)
479 exit(X_STARTUP);
480 #else
481 msg("remote dump not enabled\n");
482 msg("The ENTIRE dump is aborted.\n");
483 exit(X_STARTUP);
484 #endif
485 }
486 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
487
488 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
489 signal(SIGHUP, sig);
490 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
491 signal(SIGTRAP, sig);
492 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
493 signal(SIGFPE, sig);
494 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
495 signal(SIGBUS, sig);
496 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
497 signal(SIGSEGV, sig);
498 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
499 signal(SIGTERM, sig);
500 if (signal(SIGINT, interrupt) == SIG_IGN)
501 signal(SIGINT, SIG_IGN);
502 #ifdef SIGXCPU
503 signal(SIGXCPU, SIG_IGN);
504 #endif /* SIGXCPU */
505 #ifdef SIGXFSZ
506 signal(SIGXFSZ, SIG_IGN);
507 #endif /* SIGXFSZ */
508
509 set_operators(); /* /etc/group snarfed */
510 getfstab(); /* /etc/fstab snarfed */
511
512 /*
513 * disk may end in / and this can confuse
514 * fstabsearch.
515 */
516 i = strlen(diskparam) - 1;
517 if (i > 1 && diskparam[i] == '/')
518 diskparam[i] = '\0';
519
520 disk = get_device_name(diskparam);
521 if (!disk) { /* null means the disk is some form
522 of LABEL= or UID= but it was not
523 found */
524 msg("Cannot find a disk having %s\n", diskparam);
525 msg("The ENTIRE dump is aborted.\n");
526 exit(X_STARTUP);
527 }
528 /*
529 * disk can be either the full special file name,
530 * the suffix of the special file name,
531 * the special name missing the leading '/',
532 * the file system name with or without the leading '/'.
533 */
534 if ((dt = fstabsearch(disk)) != NULL) {
535 /* if found then only one parameter (i.e. partition)
536 * is allowed */
537 if (argc >= 1) {
538 (void)fprintf(stderr, "Unknown arguments to dump:");
539 while (argc--)
540 (void)fprintf(stderr, " %s", *argv++);
541 (void)fprintf(stderr, "\n");
542 msg("The ENTIRE dump is aborted.\n");
543 exit(X_STARTUP);
544 }
545 disk = rawname(dt->fs_spec);
546 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
547 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
548 } else {
549 #ifdef __linux__
550 #ifdef HAVE_REALPATH
551 if (realpath(disk, pathname) == NULL)
552 #endif
553 strcpy(pathname, disk);
554 /*
555 * The argument could be now a mountpoint of
556 * a filesystem specified in fstab. Search for it.
557 */
558 if ((dt = fstabsearch(pathname)) != NULL) {
559 disk = rawname(dt->fs_spec);
560 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
561 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
562 } else {
563 /*
564 * The argument was not found in the fstab
565 * assume that this is a subtree and search for it
566 */
567 dt = fstabsearchdir(pathname, directory);
568 if (dt != NULL) {
569 char name[MAXPATHLEN];
570 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
571 (void)snprintf(name, sizeof(name), "%s (dir %s)",
572 dt->fs_file, directory);
573 (void)strncpy(spcl.c_filesys, name, NAMELEN);
574 disk = rawname(dt->fs_spec);
575 } else {
576 (void)strncpy(spcl.c_dev, disk, NAMELEN);
577 (void)strncpy(spcl.c_filesys, "an unlisted file system",
578 NAMELEN);
579 }
580 }
581 #else
582 (void)strncpy(spcl.c_dev, disk, NAMELEN);
583 (void)strncpy(spcl.c_filesys, "an unlisted file system",
584 NAMELEN);
585 #endif
586 }
587
588 if (directory[0] != 0) {
589 if (level != '0') {
590 msg("Only level 0 dumps are allowed on a subdirectory\n");
591 msg("The ENTIRE dump is aborted.\n");
592 exit(X_STARTUP);
593 }
594 if (uflag) {
595 msg("You can't update the dumpdates file when dumping a subdirectory\n");
596 msg("The ENTIRE dump is aborted.\n");
597 exit(X_STARTUP);
598 }
599 }
600 spcl.c_dev[NAMELEN-1] = '\0';
601 spcl.c_filesys[NAMELEN-1] = '\0';
602 (void)gethostname(spcl.c_host, NAMELEN);
603 spcl.c_host[NAMELEN-1] = '\0';
604 spcl.c_level = level - '0';
605 spcl.c_type = TS_TAPE;
606 if (!Tflag)
607 getdumptime(uflag); /* dumpdates snarfed */
608
609 if (spcl.c_ddate == 0 && spcl.c_level) {
610 msg("WARNING: There is no inferior level dump on this filesystem\n");
611 msg("WARNING: Assuming a level 0 dump by default\n");
612 level = '0';
613 spcl.c_level = 0;
614 }
615
616 if (Mflag)
617 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
618 else
619 strncpy(tape, tapeprefix, MAXPATHLEN);
620 tape[MAXPATHLEN - 1] = '\0';
621
622 if (!pipeout) {
623 if (STAT(tape, &statbuf) != -1)
624 fifoout= statbuf.st_mode & S_IFIFO;
625 }
626
627 if (!sizest) {
628
629 msg("Date of this level %c dump: %s", level,
630 ctime4(&spcl.c_date));
631 #ifdef USE_QFA
632 gThisDumpDate = spcl.c_date;
633 #endif
634 if (spcl.c_ddate)
635 msg("Date of last level %c dump: %s", lastlevel,
636 ctime4(&spcl.c_ddate));
637 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
638 if (host)
639 msgtail("to %s on host %s\n", tape, host);
640 else
641 msgtail("to %s\n", tape);
642 } /* end of size estimate */
643
644 #ifdef __linux__
645 if ((diskfd = OPEN(disk, O_RDONLY)) < 0) {
646 msg("Cannot open %s\n", disk);
647 msg("The ENTIRE dump is aborted.\n");
648 exit(X_STARTUP);
649 }
650 #ifdef BLKFLSBUF
651 (void)ioctl(diskfd, BLKFLSBUF);
652 #endif
653 retval = dump_fs_open(disk, &fs);
654 if (retval) {
655 com_err(disk, retval, "while opening filesystem");
656 if (retval == EXT2_ET_REV_TOO_HIGH)
657 msg("Get a newer version of dump!\n");
658 msg("The ENTIRE dump is aborted.\n");
659 exit(X_STARTUP);
660 }
661 if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
662 com_err(disk, retval, "while opening filesystem");
663 msg("Get a newer version of dump!\n");
664 msg("The ENTIRE dump is aborted.\n");
665 exit(X_STARTUP);
666 }
667 /* if no user label specified, use ext2 filesystem label if available */
668 if (spcl.c_label[0] == '\0') {
669 const char *lbl;
670 if ( (lbl = get_device_label(disk)) != NULL) {
671 strncpy(spcl.c_label, lbl, LBLSIZE);
672 spcl.c_label[LBLSIZE-1] = '\0';
673 }
674 else
675 strcpy(spcl.c_label, "none"); /* safe strcpy. */
676 }
677 sync();
678 dev_bsize = DEV_BSIZE;
679 dev_bshift = ffs(dev_bsize) - 1;
680 if (dev_bsize != (1 << dev_bshift))
681 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
682 tp_bshift = ffs(TP_BSIZE) - 1;
683 if (TP_BSIZE != (1 << tp_bshift))
684 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
685 maxino = fs->super->s_inodes_count + 1;
686 #if 0
687 spcl.c_flags |= DR_NEWINODEFMT;
688 #endif
689 #else /* __linux __*/
690 if ((diskfd = open(disk, O_RDONLY)) < 0) {
691 msg("Cannot open %s\n", disk);
692 msg("The ENTIRE dump is aborted.\n");
693 exit(X_STARTUP);
694 }
695 sync();
696 sblock = (struct fs *)sblock_buf;
697 bread(SBOFF, (char *) sblock, SBSIZE);
698 if (sblock->fs_magic != FS_MAGIC)
699 quit("bad sblock magic number\n");
700 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
701 dev_bshift = ffs(dev_bsize) - 1;
702 if (dev_bsize != (1 << dev_bshift))
703 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
704 tp_bshift = ffs(TP_BSIZE) - 1;
705 if (TP_BSIZE != (1 << tp_bshift))
706 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
707 #ifdef FS_44INODEFMT
708 if (sblock->fs_inodefmt >= FS_44INODEFMT)
709 spcl.c_flags |= DR_NEWINODEFMT;
710 #endif
711 maxino = sblock->fs_ipg * sblock->fs_ncg;
712 #endif /* __linux__ */
713 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
714 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
715 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
716 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
717 if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
718 quit("out of memory allocating inode maps\n");
719 tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
720
721 nonodump = spcl.c_level < honorlevel;
722
723 if (!sizest) {
724 msg("Label: %s\n", spcl.c_label);
725
726 if (compressed)
727 msg("Compressing output at compression level %d (%s)\n",
728 compressed, bzipflag ? "bzlib" : "zlib");
729 }
730
731 #if defined(SIGINFO)
732 (void)signal(SIGINFO, statussig);
733 #endif
734
735 if (!sizest)
736 msg("mapping (Pass I) [regular files]\n");
737 #ifdef __linux__
738 if (directory[0] == 0)
739 anydirskipped = mapfiles(maxino, &tapesize);
740 else {
741 if (STAT(pathname, &statbuf) == -1) {
742 msg("File cannot be accessed (%s).\n", pathname);
743 msg("The ENTIRE dump is aborted.\n");
744 exit(X_STARTUP);
745 }
746 filedev = statbuf.st_dev;
747 if (!(statbuf.st_mode & S_IFDIR)) /* is a file */
748 anydirskipped = maponefile(maxino, &tapesize,
749 directory);
750 else
751 anydirskipped = mapfilesfromdir(maxino, &tapesize,
752 directory);
753 }
754 while (argc--) {
755 int anydirskipped2;
756 char *p = *argv;
757 /* check if file is available */
758 if (STAT(p, &statbuf) == -1) {
759 msg("File cannot be accessed (%s).\n", p);
760 msg("The ENTIRE dump is aborted.\n");
761 exit(X_STARTUP);
762 }
763 /* check if file is on same unix partiton as the first
764 * argument */
765 if (statbuf.st_dev != filedev) {
766 msg("Files are not on same file system (%s).\n", p);
767 msg("The ENTIRE dump is aborted.\n");
768 exit(X_STARTUP);
769 }
770 /* check if file is a directory */
771 if (!(statbuf.st_mode & S_IFDIR))
772 anydirskipped2 = maponefile(maxino, &tapesize,
773 p+strlen(dt->fs_file));
774 else
775 /* read directory inodes.
776 * NOTE: nested directories are not recognized
777 * so inodes may be umped twice!
778 */
779 anydirskipped2 = mapfilesfromdir(maxino, &tapesize,
780 p+strlen(dt->fs_file));
781 if (!anydirskipped)
782 anydirskipped = anydirskipped2;
783 argv++;
784 }
785 #else
786 anydirskipped = mapfiles(maxino, &tapesize);
787 #endif
788
789 if (!sizest)
790 msg("mapping (Pass II) [directories]\n");
791 while (anydirskipped) {
792 anydirskipped = mapdirs(maxino, &tapesize);
793 }
794
795 if (sizest) {
796 printf("%.0f\n", ((double)tapesize + 1 + ntrec) * TP_BSIZE);
797 exit(X_FINOK);
798 } /* stop here for size estimate */
799
800 if (pipeout || unlimited) {
801 tapesize += 1 + ntrec; /* 1 map header + trailer blocks */
802 msg("estimated %ld tape blocks.\n", tapesize);
803 } else {
804 double fetapes;
805
806 if (blocksperfile)
807 fetapes = (double) tapesize / blocksperfile;
808 else if (cartridge) {
809 /* Estimate number of tapes, assuming streaming stops at
810 the end of each block written, and not in mid-block.
811 Assume no erroneous blocks; this can be compensated
812 for with an artificially low tape size. */
813 fetapes =
814 ( (double) tapesize /* blocks */
815 * TP_BSIZE /* bytes/block */
816 * (1.0/density) /* 0.1" / byte " */
817 +
818 (double) tapesize /* blocks */
819 * (1.0/ntrec) /* streaming-stops per block */
820 * 15.48 /* 0.1" / streaming-stop " */
821 ) * (1.0 / tsize ); /* tape / 0.1" " */
822 } else {
823 /* Estimate number of tapes, for old fashioned 9-track
824 tape */
825 int tenthsperirg = (density == 625) ? 3 : 7;
826 fetapes =
827 ( (double) tapesize /* blocks */
828 * TP_BSIZE /* bytes / block */
829 * (1.0/density) /* 0.1" / byte " */
830 +
831 (double) tapesize /* blocks */
832 * (1.0/ntrec) /* IRG's / block */
833 * tenthsperirg /* 0.1" / IRG " */
834 ) * (1.0 / tsize ); /* tape / 0.1" " */
835 }
836 etapes = fetapes; /* truncating assignment */
837 etapes++;
838 /* count the dumped inodes map on each additional tape */
839 tapesize += (etapes - 1) *
840 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
841 tapesize += etapes + ntrec; /* headers + trailer blks */
842 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
843 tapesize, fetapes);
844 }
845
846 #ifdef USE_QFA
847 if (tapepos) {
848 msg("writing QFA positions to %s\n", gTapeposfile);
849 if ((gTapeposfd = open(gTapeposfile, O_RDWR|O_CREAT, S_IRUSR | S_IWUSR)) < 0)
850 quit("can't open tapeposfile\n");
851 /* print QFA-file header */
852 sprintf(gTps, "%s\n%s\n%ld\n\n", QFA_MAGIC, QFA_VERSION, (unsigned long)spcl.c_date);
853 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
854 quit("can't write tapeposfile\n");
855 sprintf(gTps, "ino\ttapeno\ttapepos\n");
856 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
857 quit("can't write tapeposfile\n");
858 }
859 #endif /* USE_QFA */
860
861 /*
862 * Allocate tape buffer.
863 */
864 if (!alloctape())
865 quit(
866 "can't allocate tape buffers - try a smaller blocking factor.\n");
867
868 startnewtape(1);
869 tstart_writing = time(NULL);
870 dumpmap(usedinomap, TS_CLRI, maxino - 1);
871
872 msg("dumping (Pass III) [directories]\n");
873 dirty = 0; /* XXX just to get gcc to shut up */
874 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
875 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
876 dirty = *map++;
877 else
878 dirty >>= 1;
879 if ((dirty & 1) == 0)
880 continue;
881 /*
882 * Skip directory inodes deleted and maybe reallocated
883 */
884 dp = getino(ino);
885 if ((dp->di_mode & IFMT) != IFDIR)
886 continue;
887 #ifdef __linux__
888 /*
889 * Skip directory inodes deleted and not yes reallocated...
890 */
891 if (dp->di_nlink == 0 || dp->di_dtime != 0)
892 continue;
893 (void)dumpdirino(dp, ino);
894 #else
895 (void)dumpino(dp, ino);
896 #endif
897 }
898
899 msg("dumping (Pass IV) [regular files]\n");
900 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
901 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
902 dirty = *map++;
903 else
904 dirty >>= 1;
905 if ((dirty & 1) == 0)
906 continue;
907 /*
908 * Skip inodes deleted and reallocated as directories.
909 */
910 dp = getino(ino);
911 if ((dp->di_mode & IFMT) == IFDIR)
912 continue;
913 #ifdef __linux__
914 /*
915 * No need to check here for deleted and not yet reallocated
916 * inodes since this is done in dumpino().
917 */
918 #endif
919 (void)dumpino(dp, ino);
920 }
921
922 tend_writing = time(NULL);
923 spcl.c_type = TS_END;
924 /*
925 * Finish off the current tape record with trailer blocks, to ensure
926 * at least the data in the last partial record makes it to tape.
927 * Also make sure we write at least 1 trailer block.
928 */
929 for (i = ntrec - (spcl.c_tapea % ntrec); i; --i)
930 writeheader(maxino - 1);
931
932 tnow = trewind();
933
934 if (pipeout || fifoout)
935 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
936 ((double)spcl.c_tapea * TP_BSIZE / 1048576));
937 else
938 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
939 spcl.c_tapea,
940 ((double)spcl.c_tapea * TP_BSIZE / 1048576),
941 spcl.c_volume);
942
943 /* report dump performance, avoid division by zero */
944 if (tend_writing - tstart_writing == 0)
945 msg("finished in less than a second\n");
946 else
947 msg("finished in %d seconds, throughput %d kBytes/sec\n",
948 tend_writing - tstart_writing,
949 spcl.c_tapea / (tend_writing - tstart_writing));
950
951 putdumptime();
952 msg("Date of this level %c dump: %s", level,
953 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
954 msg("Date this dump completed: %s", ctime(&tnow));
955
956 msg("Average transfer rate: %ld kB/s\n", xferrate / tapeno);
957 if (compressed) {
958 long tapekb = bytes_written / 1024;
959 double rate = .0005 + (double) spcl.c_tapea / tapekb;
960 msg("Wrote %ldkB uncompressed, %ldkB compressed, %1.3f:1\n",
961 spcl.c_tapea, tapekb, rate);
962 }
963
964 broadcast("DUMP IS DONE!\7\7\n");
965 msg("DUMP IS DONE\n");
966 Exit(X_FINOK);
967 /* NOTREACHED */
968 return 0; /* gcc - shut up */
969 }
970
971 static void
972 usage(void)
973 {
974 char white[MAXPATHLEN];
975 const char *ext2ver, *ext2date;
976
977 memset(white, ' ', MAXPATHLEN);
978 white[MIN(strlen(__progname), MAXPATHLEN - 1)] = '\0';
979
980 #ifdef __linux__
981 ext2fs_get_library_version(&ext2ver, &ext2date);
982 fprintf(stderr, "%s %s (using libext2fs %s of %s)\n",
983 __progname, _DUMP_VERSION, ext2ver, ext2date);
984 #else
985 fprintf(stderr, "%s %s\n", __progname, _DUMP_VERSION);
986 #endif
987 fprintf(stderr,
988 "usage:\t%s [-0123456789ac"
989 #ifdef KERBEROS
990 "k"
991 #endif
992 "MnqSu"
993 "] [-B records] [-b blocksize] [-d density]\n"
994 "\t%s [-e inode#,inode#,...] [-E file] [-f file] [-h level]\n"
995 "\t%s [-I nr errors] "
996 #ifdef HAVE_BZLIB
997 "[-j zlevel] "
998 #endif
999 #ifdef USE_QFA
1000 "[-Q file] "
1001 #endif
1002 "[-s feet] [-T date] "
1003 #ifdef HAVE_ZLIB
1004 "[-z zlevel] "
1005 #endif
1006 "filesystem\n"
1007 "\t%s [-W | -w]\n",
1008 __progname, white, white, __progname);
1009 exit(X_STARTUP);
1010 }
1011
1012 /*
1013 * Pick up a numeric argument. It must be nonnegative and in the given
1014 * range (except that a vmax of 0 means unlimited).
1015 */
1016 static long
1017 numarg(const char *meaning, long vmin, long vmax)
1018 {
1019 char *p;
1020 long val;
1021
1022 val = strtol(optarg, &p, 10);
1023 if (*p)
1024 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
1025 if (val < vmin || (vmax && val > vmax))
1026 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
1027 return (val);
1028 }
1029
1030 void
1031 sig(int signo)
1032 {
1033 switch(signo) {
1034 case SIGALRM:
1035 case SIGBUS:
1036 case SIGFPE:
1037 case SIGHUP:
1038 case SIGTERM:
1039 case SIGTRAP:
1040 if (pipeout || fifoout)
1041 quit("Signal on pipe: cannot recover\n");
1042 msg("Rewriting attempted as response to unknown signal: %d.\n", signo);
1043 (void)fflush(stderr);
1044 (void)fflush(stdout);
1045 close_rewind();
1046 exit(X_REWRITE);
1047 /* NOTREACHED */
1048 case SIGSEGV:
1049 msg("SIGSEGV: ABORTING!\n");
1050 (void)signal(SIGSEGV, SIG_DFL);
1051 (void)kill(0, SIGSEGV);
1052 /* NOTREACHED */
1053 }
1054 }
1055
1056 const char *
1057 rawname(const char *cp)
1058 {
1059 #ifdef __linux__
1060 return cp;
1061 #else /* __linux__ */
1062 static char rawbuf[MAXPATHLEN];
1063 char *dp = strrchr(cp, '/');
1064
1065 if (dp == NULL)
1066 return (NULL);
1067 (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
1068 rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
1069 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
1070 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
1071 return (rawbuf);
1072 #endif /* __linux__ */
1073 }
1074
1075 /*
1076 * obsolete --
1077 * Change set of key letters and ordered arguments into something
1078 * getopt(3) will like.
1079 */
1080 static void
1081 obsolete(int *argcp, char **argvp[])
1082 {
1083 int argc, flags;
1084 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
1085
1086 /* Setup. */
1087 argv = *argvp;
1088 argc = *argcp;
1089
1090 /* Return if no arguments or first argument has leading dash. */
1091 ap = argv[1];
1092 if (argc == 1 || *ap == '-')
1093 return;
1094
1095 /* Allocate space for new arguments. */
1096 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
1097 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
1098 err(X_STARTUP, "malloc new args");
1099
1100 *nargv++ = *argv;
1101 argv += 2;
1102
1103 for (flags = 0; *ap; ++ap) {
1104 switch (*ap) {
1105 case 'B':
1106 case 'b':
1107 case 'd':
1108 case 'e':
1109 case 'E':
1110 case 'f':
1111 case 'F':
1112 case 'h':
1113 case 'L':
1114 case 'Q':
1115 case 's':
1116 case 'T':
1117 if (*argv == NULL) {
1118 warnx("option requires an argument -- %c", *ap);
1119 usage();
1120 }
1121 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
1122 err(X_STARTUP, "malloc arg");
1123 nargv[0][0] = '-';
1124 nargv[0][1] = *ap;
1125 (void)strcpy(&nargv[0][2], *argv);
1126 ++argv;
1127 ++nargv;
1128 break;
1129 default:
1130 if (!flags) {
1131 *p++ = '-';
1132 flags = 1;
1133 }
1134 *p++ = *ap;
1135 break;
1136 }
1137 }
1138
1139 /* Terminate flags. */
1140 if (flags) {
1141 *p = '\0';
1142 *nargv++ = flagsp;
1143 }
1144
1145 /* Copy remaining arguments. */
1146 while ((*nargv++ = *argv++));
1147
1148 /* Update argument count. */
1149 *argcp = nargv - *argvp - 1;
1150 }
1151
1152 /*
1153 * This tests whether an inode is in the exclude list
1154 */
1155 int
1156 exclude_ino(dump_ino_t ino)
1157 {
1158 /* 04-Feb-00 ILC */
1159 if (iexclude_num) { /* if there are inodes in the exclude list */
1160 int idx; /* then check this inode against it */
1161 for (idx = 0; idx < iexclude_num; idx++)
1162 if (ino == iexclude_list[idx])
1163 return 1;
1164 }
1165 return 0;
1166 }
1167
1168 /*
1169 * This tests adds an inode to the exclusion list if it isn't already there
1170 */
1171 void
1172 do_exclude_ino(dump_ino_t ino, const char *reason)
1173 {
1174 if (!exclude_ino(ino)) {
1175 if (iexclude_num == IEXCLUDE_MAXNUM) {
1176 msg("Too many exclude options\n");
1177 msg("The ENTIRE dump is aborted.\n");
1178 exit(X_STARTUP);
1179 }
1180 if (reason)
1181 msg("Added inode %u to exclude list (%s)\n",
1182 ino, reason);
1183 else
1184 msg("Added inode %u to exclude list\n", ino);
1185 iexclude_list[iexclude_num++] = ino;
1186 }
1187 }
1188
1189 static void
1190 do_exclude_ino_str(char * ino) {
1191 char *r;
1192 unsigned long inod;
1193
1194 inod = strtoul(ino, &r, 10);
1195 if (*r != '\0' || inod <= ROOTINO) {
1196 msg("Invalid inode argument %s\n", ino);
1197 msg("The ENTIRE dump is aborted.\n");
1198 exit(X_STARTUP);
1199 }
1200 do_exclude_ino(inod, NULL);
1201 }
1202
1203 /*
1204 * This reads a file containing one inode number per line and exclude them all
1205 */
1206 static void
1207 do_exclude_from_file(char *file) {
1208 FILE *f;
1209 char *p, fname[MAXPATHLEN];
1210
1211
1212 if (!( f = fopen(file, "r")) ) {
1213 msg("Cannot open file for reading: %s\n", file);
1214 msg("The ENTIRE dump is aborted.\n");
1215 exit(X_STARTUP);
1216 }
1217 while (( p = fgets(fname, MAXPATHLEN, f))) {
1218 if ( *p && *(p + strlen(p) - 1) == '\n' ) /* possible null string */
1219 *(p + strlen(p) - 1) = '\0';
1220 if ( !*p ) /* skip empty lines */
1221 continue;
1222 do_exclude_ino_str(p);
1223 }
1224 fclose(f);
1225 }
1226
1227 static void incompat_flags(int cond, char flag1, char flag2) {
1228 if (cond) {
1229 msg("You cannot use the %c and %c flags together.\n",
1230 flag1, flag2);
1231 msg("The ENTIRE dump is aborted.\n");
1232 exit(X_STARTUP);
1233 }
1234 }
Unnamed repository; edit this file 'description' to name the repository.