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Cleaned up the external variables definition mess...
[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 1.56 2001/08/13 16:17:52 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 #ifdef HAVE_EXT2FS_EXT2_FS_H
64 #include <ext2fs/ext2_fs.h>
65 #else
66 #include <linux/ext2_fs.h>
67 #endif
68 #include <ext2fs/ext2fs.h>
69 #include <sys/stat.h>
70 #include <bsdcompat.h>
71 #elif defined sunos
72 #include <sys/vnode.h>
73
74 #include <ufs/inode.h>
75 #include <ufs/fs.h>
76 #else
77 #include <ufs/ufs/dinode.h>
78 #include <ufs/ffs/fs.h>
79 #endif
80
81 #include <protocols/dumprestore.h>
82
83 #include "dump.h"
84 #include "pathnames.h"
85 #include "bylabel.h"
86
87 #ifndef SBOFF
88 #define SBOFF (SBLOCK * DEV_BSIZE)
89 #endif
90
91 /*
92 * Dump maps used to describe what is to be dumped.
93 */
94 int mapsize; /* size of the state maps */
95 char *usedinomap; /* map of allocated inodes */
96 char *dumpdirmap; /* map of directories to be dumped */
97 char *dumpinomap; /* map of files to be dumped */
98
99 const char *disk; /* name of the disk file */
100 char tape[MAXPATHLEN];/* name of the tape file */
101 char *tapeprefix; /* prefix of the tape file */
102 char *dumpdates; /* name of the file containing dump date information*/
103 char lastlevel; /* dump level of previous dump */
104 char level; /* dump level of this dump */
105 int uflag; /* update flag */
106 int Mflag; /* multi-volume flag */
107 char *eot_script; /* end of volume script fiag */
108 int diskfd; /* disk file descriptor */
109 int tapefd; /* tape file descriptor */
110 int pipeout; /* true => output to standard output */
111 int fifoout; /* true => output to fifo */
112 dump_ino_t curino; /* current inumber; used globally */
113 int newtape; /* new tape flag */
114 int density; /* density in 0.1" units */
115 long tapesize; /* estimated tape size, blocks */
116 long tsize; /* tape size in 0.1" units */
117 long asize; /* number of 0.1" units written on current tape */
118 int etapes; /* estimated number of tapes */
119 int nonodump; /* if set, do not honor UF_NODUMP user flags */
120 int unlimited; /* if set, write to end of medium */
121 int compressed; /* if set, dump is to be compressed */
122 long long bytes_written;/* total bytes written to tape */
123 long uncomprblks; /* uncompressed blocks written to tape */
124 int notify; /* notify operator flag */
125 int blockswritten; /* number of blocks written on current tape */
126 int tapeno; /* current tape number */
127 time_t tstart_writing; /* when started writing the first tape block */
128 time_t tend_writing; /* after writing the last tape block */
129 #ifdef __linux__
130 ext2_filsys fs;
131 #else
132 struct fs *sblock; /* the file system super block */
133 char sblock_buf[MAXBSIZE];
134 #endif
135 long xferrate; /* averaged transfer rate of all volumes */
136 long dev_bsize; /* block size of underlying disk device */
137 int dev_bshift; /* log2(dev_bsize) */
138 int tp_bshift; /* log2(TP_BSIZE) */
139
140 #ifdef USE_QFA
141 int gTapeposfd;
142 char *gTapeposfile;
143 char gTps[255];
144 int32_t gThisDumpDate;
145 #endif /* USE_QFA */
146
147 struct dumptime *dthead; /* head of the list version */
148 int nddates; /* number of records (might be zero) */
149 int ddates_in; /* we have read the increment file */
150 struct dumpdates **ddatev; /* the arrayfied version */
151
152 int notify = 0; /* notify operator flag */
153 int blockswritten = 0; /* number of blocks written on current tape */
154 int tapeno = 0; /* current tape number */
155 int density = 0; /* density in bytes/0.1" " <- this is for hilit19 */
156 int ntrec = NTREC; /* # tape blocks in each tape record */
157 int cartridge = 0; /* Assume non-cartridge tape */
158 #ifdef USE_QFA
159 int tapepos = 0; /* assume no QFA tapeposition needed by user */
160 #endif /* USE_QFA */
161 int dokerberos = 0; /* Use Kerberos authentication */
162 long dev_bsize = 1; /* recalculated below */
163 long blocksperfile; /* output blocks per file */
164 char *host = NULL; /* remote host (if any) */
165 int sizest = 0; /* return size estimate only */
166 int compressed = 0; /* use zlib to compress the output, compress level 1-9 */
167 long long bytes_written = 0; /* total bytes written */
168 long uncomprblks = 0;/* uncompressed blocks written */
169
170 #ifdef __linux__
171 char *__progname;
172 #endif
173
174 int maxbsize = 64*1024; /* XXX MAXBSIZE from sys/param.h */
175 static long numarg __P((const char *, long, long));
176 static void obsolete __P((int *, char **[]));
177 static void usage __P((void));
178 static void do_exclude_from_file __P((char *));
179 static void do_exclude_ino_str __P((char *));
180
181 static dump_ino_t iexclude_list[IEXCLUDE_MAXNUM];/* the inode exclude list */
182 static int iexclude_num = 0; /* number of elements in the list */
183
184 int
185 main(int argc, char *argv[])
186 {
187 register dump_ino_t ino;
188 register int dirty;
189 register struct dinode *dp;
190 register struct fstab *dt;
191 register char *map;
192 register int ch;
193 int i, anydirskipped, bflag = 0, Tflag = 0, honorlevel = 1;
194 dump_ino_t maxino;
195 struct STAT statbuf;
196 dev_t filedev = 0;
197 #ifdef __linux__
198 errcode_t retval;
199 char directory[MAXPATHLEN];
200 char pathname[MAXPATHLEN];
201 #endif
202 time_t tnow;
203 char *diskparam;
204
205 spcl.c_label[0] = '\0';
206 spcl.c_date = time(NULL);
207
208 #ifdef __linux__
209 __progname = argv[0];
210 directory[0] = 0;
211 initialize_ext2_error_table();
212 #endif
213
214 tsize = 0; /* Default later, based on 'c' option for cart tapes */
215 unlimited = 1;
216 eot_script = NULL;
217 if ((tapeprefix = getenv("TAPE")) == NULL)
218 tapeprefix = _PATH_DEFTAPE;
219 dumpdates = _PATH_DUMPDATES;
220 if (TP_BSIZE / DEV_BSIZE == 0 || TP_BSIZE % DEV_BSIZE != 0)
221 quit("TP_BSIZE must be a multiple of DEV_BSIZE\n");
222 level = '0';
223
224 if (argc < 2)
225 usage();
226
227 obsolete(&argc, &argv);
228
229 #ifdef USE_QFA
230 gTapeposfd = -1;
231 #endif /* USE_QFA */
232
233 while ((ch = getopt(argc, argv,
234 "0123456789aB:b:cd:e:E:f:F:h:L:"
235 #ifdef KERBEROS
236 "k"
237 #endif
238 "Mn"
239 #ifdef USE_QFA
240 "Q:"
241 #endif
242 "s:ST:uWw"
243 #ifdef HAVE_ZLIB
244 "z::"
245 #endif
246 )) != -1)
247 switch (ch) {
248 /* dump level */
249 case '0': case '1': case '2': case '3': case '4':
250 case '5': case '6': case '7': case '8': case '9':
251 level = ch;
252 break;
253
254 case 'a': /* `auto-size', Write to EOM. */
255 unlimited = 1;
256 break;
257
258 case 'B': /* blocks per output file */
259 unlimited = 0;
260 blocksperfile = numarg("number of blocks per file",
261 1L, 0L);
262 break;
263
264 case 'b': /* blocks per tape write */
265 ntrec = numarg("number of blocks per write",
266 1L, 1000L);
267 if (ntrec > maxbsize/1024) {
268 msg("Please choose a blocksize <= %dkB\n",
269 maxbsize/1024);
270 msg("The ENTIRE dump is aborted.\n");
271 exit(X_STARTUP);
272 }
273 bflag = 1;
274 break;
275
276 case 'c': /* Tape is cart. not 9-track */
277 unlimited = 0;
278 cartridge = 1;
279 break;
280
281 case 'd': /* density, in bits per inch */
282 unlimited = 0;
283 density = numarg("density", 10L, 327670L) / 10;
284 if (density >= 625 && !bflag)
285 ntrec = HIGHDENSITYTREC;
286 break;
287
288 /* 04-Feb-00 ILC */
289 case 'e': /* exclude an inode */
290 {
291 char *p = optarg, *q;
292 while ((q = strchr(p, ','))) {
293 *q = '\0';
294 do_exclude_ino_str(p);
295 p = q + 1;
296 }
297 do_exclude_ino_str(p);
298 }
299 break;
300
301 case 'E': /* exclude inodes read from file */
302 do_exclude_from_file(optarg);
303 break;
304
305 case 'f': /* output file */
306 tapeprefix = optarg;
307 break;
308
309 case 'F': /* end of tape script */
310 eot_script = optarg;
311 break;
312
313 case 'h':
314 honorlevel = numarg("honor level", 0L, 10L);
315 break;
316
317 #ifdef KERBEROS
318 case 'k':
319 dokerberos = 1;
320 break;
321 #endif
322
323 case 'L':
324 /*
325 * Note that although there are LBLSIZE characters,
326 * the last must be '\0', so the limit on strlen()
327 * is really LBLSIZE-1.
328 */
329 strncpy(spcl.c_label, optarg, LBLSIZE);
330 spcl.c_label[LBLSIZE-1] = '\0';
331 if (strlen(optarg) > LBLSIZE-1) {
332 msg(
333 "WARNING Label `%s' is larger than limit of %d characters.\n",
334 optarg, LBLSIZE-1);
335 msg("WARNING: Using truncated label `%s'.\n",
336 spcl.c_label);
337 }
338 break;
339
340 case 'M': /* multi-volume flag */
341 Mflag = 1;
342 break;
343
344 case 'n': /* notify operators */
345 notify = 1;
346 break;
347
348 #ifdef USE_QFA
349 case 'Q': /* create tapeposfile */
350 gTapeposfile = optarg;
351 tapepos = 1;
352 break;
353 #endif /* USE_QFA */
354
355 case 's': /* tape size, feet */
356 unlimited = 0;
357 tsize = numarg("tape size", 1L, 0L) * 12 * 10;
358 break;
359
360 case 'S':
361 sizest = 1; /* return size estimate only */
362 break;
363
364 case 'T': /* time of last dump */
365 spcl.c_ddate = unctime(optarg);
366 if (spcl.c_ddate < 0) {
367 msg("bad time \"%s\"\n", optarg);
368 msg("The ENTIRE dump is aborted.\n");
369 exit(X_STARTUP);
370 }
371 Tflag = 1;
372 lastlevel = '?';
373 break;
374
375 case 'u': /* update dumpdates */
376 uflag = 1;
377 break;
378
379 case 'W': /* what to do */
380 case 'w':
381 lastdump(ch);
382 exit(X_FINOK); /* do nothing else */
383 #ifdef HAVE_ZLIB
384 case 'z':
385 compressed = 2;
386 if (optarg)
387 compressed = numarg("compress level", 1L, 9L);
388 break;
389 #endif /* HAVE_ZLIB */
390
391 default:
392 usage();
393 }
394 argc -= optind;
395 argv += optind;
396
397 if (argc < 1) {
398 msg("Must specify disk or filesystem\n");
399 msg("The ENTIRE dump is aborted.\n");
400 exit(X_STARTUP);
401 }
402 diskparam = *argv++;
403 if (strlen(diskparam) >= MAXPATHLEN) {
404 msg("Disk or filesystem name too long: %s\n", diskparam);
405 msg("The ENTIRE dump is aborted.\n");
406 exit(X_STARTUP);
407 }
408 argc--;
409 if (Tflag && uflag) {
410 msg("You cannot use the T and u flags together.\n");
411 msg("The ENTIRE dump is aborted.\n");
412 exit(X_STARTUP);
413 }
414 if (strcmp(tapeprefix, "-") == 0) {
415 pipeout++;
416 tapeprefix = "standard output";
417 }
418
419 if (blocksperfile && !compressed)
420 blocksperfile = blocksperfile / ntrec * ntrec; /* round down */
421 else if (!unlimited) {
422 /*
423 * Determine how to default tape size and density
424 *
425 * density tape size
426 * 9-track 1600 bpi (160 bytes/.1") 2300 ft.
427 * 9-track 6250 bpi (625 bytes/.1") 2300 ft.
428 * cartridge 8000 bpi (100 bytes/.1") 1700 ft.
429 * (450*4 - slop)
430 * hilit19 hits again: "
431 */
432 if (density == 0)
433 density = cartridge ? 100 : 160;
434 if (tsize == 0)
435 tsize = cartridge ? 1700L*120L : 2300L*120L;
436 }
437
438 if (strchr(tapeprefix, ':')) {
439 host = tapeprefix;
440 tapeprefix = strchr(host, ':');
441 *tapeprefix++ = '\0';
442 #ifdef RDUMP
443 if (index(tapeprefix, '\n')) {
444 msg("invalid characters in tape\n");
445 msg("The ENTIRE dump is aborted.\n");
446 exit(X_STARTUP);
447 }
448 if (rmthost(host) == 0)
449 exit(X_STARTUP);
450 #else
451 msg("remote dump not enabled\n");
452 msg("The ENTIRE dump is aborted.\n");
453 exit(X_STARTUP);
454 #endif
455 }
456 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */
457
458 if (signal(SIGHUP, SIG_IGN) != SIG_IGN)
459 signal(SIGHUP, sig);
460 if (signal(SIGTRAP, SIG_IGN) != SIG_IGN)
461 signal(SIGTRAP, sig);
462 if (signal(SIGFPE, SIG_IGN) != SIG_IGN)
463 signal(SIGFPE, sig);
464 if (signal(SIGBUS, SIG_IGN) != SIG_IGN)
465 signal(SIGBUS, sig);
466 if (signal(SIGSEGV, SIG_IGN) != SIG_IGN)
467 signal(SIGSEGV, sig);
468 if (signal(SIGTERM, SIG_IGN) != SIG_IGN)
469 signal(SIGTERM, sig);
470 if (signal(SIGINT, interrupt) == SIG_IGN)
471 signal(SIGINT, SIG_IGN);
472 set_operators(); /* /etc/group snarfed */
473 getfstab(); /* /etc/fstab snarfed */
474
475 /*
476 * disk may end in / and this can confuse
477 * fstabsearch.
478 */
479 i = strlen(diskparam) - 1;
480 if (i > 1 && diskparam[i] == '/')
481 diskparam[i] = '\0';
482
483 disk = get_device_name(diskparam);
484 if (!disk) { /* null means the disk is some form
485 of LABEL= or UID= but it was not
486 found */
487 msg("Cannot find a disk having %s\n", diskparam);
488 msg("The ENTIRE dump is aborted.\n");
489 exit(X_STARTUP);
490 }
491 /*
492 * disk can be either the full special file name,
493 * the suffix of the special file name,
494 * the special name missing the leading '/',
495 * the file system name with or without the leading '/'.
496 */
497 if ((dt = fstabsearch(disk)) != NULL) {
498 /* if found then only one parameter (i.e. partition)
499 * is allowed */
500 if (argc >= 1) {
501 (void)fprintf(stderr, "Unknown arguments to dump:");
502 while (argc--)
503 (void)fprintf(stderr, " %s", *argv++);
504 (void)fprintf(stderr, "\n");
505 msg("The ENTIRE dump is aborted.\n");
506 exit(X_STARTUP);
507 }
508 disk = rawname(dt->fs_spec);
509 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
510 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
511 } else {
512 #ifdef __linux__
513 #ifdef HAVE_REALPATH
514 if (realpath(disk, pathname) == NULL)
515 #endif
516 strcpy(pathname, disk);
517 /*
518 * The argument could be now a mountpoint of
519 * a filesystem specified in fstab. Search for it.
520 */
521 if ((dt = fstabsearch(pathname)) != NULL) {
522 disk = rawname(dt->fs_spec);
523 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
524 (void)strncpy(spcl.c_filesys, dt->fs_file, NAMELEN);
525 } else {
526 /*
527 * The argument was not found in the fstab
528 * assume that this is a subtree and search for it
529 */
530 dt = fstabsearchdir(pathname, directory);
531 if (dt != NULL) {
532 char name[MAXPATHLEN];
533 (void)strncpy(spcl.c_dev, dt->fs_spec, NAMELEN);
534 (void)snprintf(name, sizeof(name), "%s (dir %s)",
535 dt->fs_file, directory);
536 (void)strncpy(spcl.c_filesys, name, NAMELEN);
537 disk = rawname(dt->fs_spec);
538 } else {
539 (void)strncpy(spcl.c_dev, disk, NAMELEN);
540 (void)strncpy(spcl.c_filesys, "an unlisted file system",
541 NAMELEN);
542 }
543 }
544 #else
545 (void)strncpy(spcl.c_dev, disk, NAMELEN);
546 (void)strncpy(spcl.c_filesys, "an unlisted file system",
547 NAMELEN);
548 #endif
549 }
550
551 if (directory[0] != 0) {
552 if (level != '0') {
553 msg("Only level 0 dumps are allowed on a subdirectory\n");
554 msg("The ENTIRE dump is aborted.\n");
555 exit(X_STARTUP);
556 }
557 if (uflag) {
558 msg("You can't update the dumpdates file when dumping a subdirectory\n");
559 msg("The ENTIRE dump is aborted.\n");
560 exit(X_STARTUP);
561 }
562 }
563 spcl.c_dev[NAMELEN-1] = '\0';
564 spcl.c_filesys[NAMELEN-1] = '\0';
565 (void)gethostname(spcl.c_host, NAMELEN);
566 spcl.c_host[NAMELEN-1] = '\0';
567 spcl.c_level = level - '0';
568 spcl.c_type = TS_TAPE;
569 if (!Tflag)
570 getdumptime(uflag); /* dumpdates snarfed */
571
572 if (spcl.c_ddate == 0 && spcl.c_level) {
573 msg("WARNING: There is no inferior level dump on this filesystem\n");
574 msg("WARNING: Assuming a level 0 dump by default\n");
575 level = '0';
576 spcl.c_level = 0;
577 }
578
579 if (Mflag)
580 snprintf(tape, MAXPATHLEN, "%s%03d", tapeprefix, tapeno + 1);
581 else
582 strncpy(tape, tapeprefix, MAXPATHLEN);
583 tape[MAXPATHLEN - 1] = '\0';
584
585 if (!pipeout) {
586 if (STAT(tape, &statbuf) != -1)
587 fifoout= statbuf.st_mode & S_IFIFO;
588 }
589
590 if (!sizest) {
591
592 msg("Date of this level %c dump: %s", level,
593 ctime4(&spcl.c_date));
594 #ifdef USE_QFA
595 gThisDumpDate = spcl.c_date;
596 #endif
597 if (spcl.c_ddate)
598 msg("Date of last level %c dump: %s", lastlevel,
599 ctime4(&spcl.c_ddate));
600 msg("Dumping %s (%s) ", disk, spcl.c_filesys);
601 if (host)
602 msgtail("to %s on host %s\n", tape, host);
603 else
604 msgtail("to %s\n", tape);
605 } /* end of size estimate */
606
607 #ifdef __linux__
608 retval = dump_fs_open(disk, &fs);
609 if (retval) {
610 com_err(disk, retval, "while opening filesystem");
611 if (retval == EXT2_ET_REV_TOO_HIGH)
612 msg("Get a newer version of dump!\n");
613 msg("The ENTIRE dump is aborted.\n");
614 exit(X_STARTUP);
615 }
616 if (fs->super->s_rev_level > DUMP_CURRENT_REV) {
617 com_err(disk, retval, "while opening filesystem");
618 msg("Get a newer version of dump!\n");
619 msg("The ENTIRE dump is aborted.\n");
620 exit(X_STARTUP);
621 }
622 if ((diskfd = OPEN(disk, O_RDONLY)) < 0) {
623 msg("Cannot open %s\n", disk);
624 msg("The ENTIRE dump is aborted.\n");
625 exit(X_STARTUP);
626 }
627 /* if no user label specified, use ext2 filesystem label if available */
628 if (spcl.c_label[0] == '\0') {
629 const char *lbl;
630 if ( (lbl = get_device_label(disk)) != NULL) {
631 strncpy(spcl.c_label, lbl, LBLSIZE);
632 spcl.c_label[LBLSIZE-1] = '\0';
633 }
634 else
635 strcpy(spcl.c_label, "none"); /* safe strcpy. */
636 }
637 sync();
638 dev_bsize = DEV_BSIZE;
639 dev_bshift = ffs(dev_bsize) - 1;
640 if (dev_bsize != (1 << dev_bshift))
641 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
642 tp_bshift = ffs(TP_BSIZE) - 1;
643 if (TP_BSIZE != (1 << tp_bshift))
644 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
645 maxino = fs->super->s_inodes_count;
646 #if 0
647 spcl.c_flags |= DR_NEWINODEFMT;
648 #endif
649 #else /* __linux __*/
650 if ((diskfd = open(disk, O_RDONLY)) < 0) {
651 msg("Cannot open %s\n", disk);
652 msg("The ENTIRE dump is aborted.\n");
653 exit(X_STARTUP);
654 }
655 sync();
656 sblock = (struct fs *)sblock_buf;
657 bread(SBOFF, (char *) sblock, SBSIZE);
658 if (sblock->fs_magic != FS_MAGIC)
659 quit("bad sblock magic number\n");
660 dev_bsize = sblock->fs_fsize / fsbtodb(sblock, 1);
661 dev_bshift = ffs(dev_bsize) - 1;
662 if (dev_bsize != (1 << dev_bshift))
663 quit("dev_bsize (%d) is not a power of 2", dev_bsize);
664 tp_bshift = ffs(TP_BSIZE) - 1;
665 if (TP_BSIZE != (1 << tp_bshift))
666 quit("TP_BSIZE (%d) is not a power of 2", TP_BSIZE);
667 #ifdef FS_44INODEFMT
668 if (sblock->fs_inodefmt >= FS_44INODEFMT)
669 spcl.c_flags |= DR_NEWINODEFMT;
670 #endif
671 maxino = sblock->fs_ipg * sblock->fs_ncg;
672 #endif /* __linux__ */
673 mapsize = roundup(howmany(maxino, NBBY), TP_BSIZE);
674 usedinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
675 dumpdirmap = (char *)calloc((unsigned) mapsize, sizeof(char));
676 dumpinomap = (char *)calloc((unsigned) mapsize, sizeof(char));
677 if (usedinomap == NULL || dumpdirmap == NULL || dumpinomap == NULL)
678 quit("out of memory allocating inode maps\n");
679 tapesize = 2 * (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
680
681 nonodump = spcl.c_level < honorlevel;
682
683 if (!sizest) {
684 msg("Label: %s\n", spcl.c_label);
685
686 if (compressed)
687 msg("Compressing output at compression level %d\n",
688 compressed);
689 }
690
691 #if defined(SIGINFO)
692 (void)signal(SIGINFO, statussig);
693 #endif
694
695 if (!sizest)
696 msg("mapping (Pass I) [regular files]\n");
697 #ifdef __linux__
698 if (directory[0] == 0)
699 anydirskipped = mapfiles(maxino, &tapesize);
700 else {
701 if (STAT(pathname, &statbuf) == -1) {
702 msg("File cannot be accessed (%s).\n", pathname);
703 msg("The ENTIRE dump is aborted.\n");
704 exit(X_STARTUP);
705 }
706 filedev = statbuf.st_dev;
707 if (!(statbuf.st_mode & S_IFDIR)) /* is a file */
708 anydirskipped = maponefile(maxino, &tapesize,
709 directory);
710 else
711 anydirskipped = mapfilesfromdir(maxino, &tapesize,
712 directory);
713 }
714 while (argc--) {
715 int anydirskipped2;
716 char *p = *argv;
717 /* check if file is available */
718 if (STAT(p, &statbuf) == -1) {
719 msg("File cannot be accessed (%s).\n", p);
720 msg("The ENTIRE dump is aborted.\n");
721 exit(X_STARTUP);
722 }
723 /* check if file is on same unix partiton as the first
724 * argument */
725 if (statbuf.st_dev != filedev) {
726 msg("Files are not on same file system (%s).\n", p);
727 msg("The ENTIRE dump is aborted.\n");
728 exit(X_STARTUP);
729 }
730 /* check if file is a directory */
731 if (!(statbuf.st_mode & S_IFDIR))
732 anydirskipped2 = maponefile(maxino, &tapesize,
733 p+strlen(dt->fs_file));
734 else
735 /* read directory inodes.
736 * NOTE: nested directories are not recognized
737 * so inodes may be umped twice!
738 */
739 anydirskipped2 = mapfilesfromdir(maxino, &tapesize,
740 p+strlen(dt->fs_file));
741 if (!anydirskipped)
742 anydirskipped = anydirskipped2;
743 argv++;
744 }
745 #else
746 anydirskipped = mapfiles(maxino, &tapesize);
747 #endif
748
749 if (!sizest)
750 msg("mapping (Pass II) [directories]\n");
751 while (anydirskipped) {
752 anydirskipped = mapdirs(maxino, &tapesize);
753 }
754
755 if (sizest) {
756 printf("%.0f\n", ((double)tapesize + 1 + ntrec) * TP_BSIZE);
757 exit(X_FINOK);
758 } /* stop here for size estimate */
759
760 if (pipeout || unlimited) {
761 tapesize += 1 + ntrec; /* 1 map header + trailer blocks */
762 msg("estimated %ld tape blocks.\n", tapesize);
763 } else {
764 double fetapes;
765
766 if (blocksperfile)
767 fetapes = (double) tapesize / blocksperfile;
768 else if (cartridge) {
769 /* Estimate number of tapes, assuming streaming stops at
770 the end of each block written, and not in mid-block.
771 Assume no erroneous blocks; this can be compensated
772 for with an artificially low tape size. */
773 fetapes =
774 ( (double) tapesize /* blocks */
775 * TP_BSIZE /* bytes/block */
776 * (1.0/density) /* 0.1" / byte " */
777 +
778 (double) tapesize /* blocks */
779 * (1.0/ntrec) /* streaming-stops per block */
780 * 15.48 /* 0.1" / streaming-stop " */
781 ) * (1.0 / tsize ); /* tape / 0.1" " */
782 } else {
783 /* Estimate number of tapes, for old fashioned 9-track
784 tape */
785 int tenthsperirg = (density == 625) ? 3 : 7;
786 fetapes =
787 ( (double) tapesize /* blocks */
788 * TP_BSIZE /* bytes / block */
789 * (1.0/density) /* 0.1" / byte " */
790 +
791 (double) tapesize /* blocks */
792 * (1.0/ntrec) /* IRG's / block */
793 * tenthsperirg /* 0.1" / IRG " */
794 ) * (1.0 / tsize ); /* tape / 0.1" " */
795 }
796 etapes = fetapes; /* truncating assignment */
797 etapes++;
798 /* count the dumped inodes map on each additional tape */
799 tapesize += (etapes - 1) *
800 (howmany(mapsize * sizeof(char), TP_BSIZE) + 1);
801 tapesize += etapes + ntrec; /* headers + trailer blks */
802 msg("estimated %ld tape blocks on %3.2f tape(s).\n",
803 tapesize, fetapes);
804 }
805
806 #ifdef USE_QFA
807 if (tapepos) {
808 msg("writing QFA positions to %s\n", gTapeposfile);
809 if ((gTapeposfd = open(gTapeposfile, O_RDWR|O_CREAT, S_IRUSR | S_IWUSR)) < 0)
810 quit("can't open tapeposfile\n");
811 /* print QFA-file header */
812 sprintf(gTps, "%s\n%s\n%ld\n\n", QFA_MAGIC, QFA_VERSION, (unsigned long)spcl.c_date);
813 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
814 quit("can't write tapeposfile\n");
815 sprintf(gTps, "ino\ttapeno\ttapepos\n");
816 if (write(gTapeposfd, gTps, strlen(gTps)) != strlen(gTps))
817 quit("can't write tapeposfile\n");
818 }
819 #endif /* USE_QFA */
820
821 /*
822 * Allocate tape buffer.
823 */
824 if (!alloctape())
825 quit(
826 "can't allocate tape buffers - try a smaller blocking factor.\n");
827
828 startnewtape(1);
829 tstart_writing = time(NULL);
830 dumpmap(usedinomap, TS_CLRI, maxino - 1);
831
832 msg("dumping (Pass III) [directories]\n");
833 dirty = 0; /* XXX just to get gcc to shut up */
834 for (map = dumpdirmap, ino = 1; ino < maxino; ino++) {
835 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
836 dirty = *map++;
837 else
838 dirty >>= 1;
839 if ((dirty & 1) == 0)
840 continue;
841 /*
842 * Skip directory inodes deleted and maybe reallocated
843 */
844 dp = getino(ino);
845 if ((dp->di_mode & IFMT) != IFDIR)
846 continue;
847 #ifdef __linux__
848 /*
849 * Skip directory inodes deleted and not yes reallocated...
850 */
851 if (dp->di_nlink == 0 || dp->di_dtime != 0)
852 continue;
853 (void)dumpdirino(dp, ino);
854 #else
855 (void)dumpino(dp, ino);
856 #endif
857 }
858
859 msg("dumping (Pass IV) [regular files]\n");
860 for (map = dumpinomap, ino = 1; ino < maxino; ino++) {
861 if (((ino - 1) % NBBY) == 0) /* map is offset by 1 */
862 dirty = *map++;
863 else
864 dirty >>= 1;
865 if ((dirty & 1) == 0)
866 continue;
867 /*
868 * Skip inodes deleted and reallocated as directories.
869 */
870 dp = getino(ino);
871 if ((dp->di_mode & IFMT) == IFDIR)
872 continue;
873 #ifdef __linux__
874 /*
875 * No need to check here for deleted and not yet reallocated
876 * inodes since this is done in dumpino().
877 */
878 #endif
879 (void)dumpino(dp, ino);
880 }
881
882 tend_writing = time(NULL);
883 spcl.c_type = TS_END;
884 /*
885 * Finish off the current tape record with trailer blocks, to ensure
886 * at least the data in the last partial record makes it to tape.
887 * Also make sure we write at least 1 trailer block.
888 */
889 for (i = ntrec - (spcl.c_tapea % ntrec); i; --i)
890 writeheader(maxino - 1);
891
892 tnow = trewind();
893
894 if (pipeout || fifoout)
895 msg("%ld tape blocks (%.2fMB)\n", spcl.c_tapea,
896 ((double)spcl.c_tapea * TP_BSIZE / 1048576));
897 else
898 msg("%ld tape blocks (%.2fMB) on %d volume(s)\n",
899 spcl.c_tapea,
900 ((double)spcl.c_tapea * TP_BSIZE / 1048576),
901 spcl.c_volume);
902
903 /* report dump performance, avoid division by zero */
904 if (tend_writing - tstart_writing == 0)
905 msg("finished in less than a second\n");
906 else
907 msg("finished in %d seconds, throughput %d kBytes/sec\n",
908 tend_writing - tstart_writing,
909 spcl.c_tapea / (tend_writing - tstart_writing));
910
911 putdumptime();
912 msg("Date of this level %c dump: %s", level,
913 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
914 msg("Date this dump completed: %s", ctime(&tnow));
915
916 msg("Average transfer rate: %ld kB/s\n", xferrate / tapeno);
917 if (compressed) {
918 long tapekb = bytes_written / 1024;
919 double rate = .0005 + (double) spcl.c_tapea / tapekb;
920 msg("Wrote %ldkB uncompressed, %ldkB compressed, %1.3f:1\n",
921 spcl.c_tapea, tapekb, rate);
922 }
923
924 broadcast("DUMP IS DONE!\7\7\n");
925 msg("DUMP IS DONE\n");
926 Exit(X_FINOK);
927 /* NOTREACHED */
928 return 0; /* gcc - shut up */
929 }
930
931 static void
932 usage(void)
933 {
934 char white[MAXPATHLEN];
935 const char *ext2ver, *ext2date;
936
937 memset(white, ' ', MAXPATHLEN);
938 white[MIN(strlen(__progname), MAXPATHLEN - 1)] = '\0';
939
940 #ifdef __linux__
941 ext2fs_get_library_version(&ext2ver, &ext2date);
942 fprintf(stderr, "%s %s (using libext2fs %s of %s)\n",
943 __progname, _DUMP_VERSION, ext2ver, ext2date);
944 #else
945 fprintf(stderr, "%s %s\n", __progname, _DUMP_VERSION);
946 #endif
947 fprintf(stderr,
948 "usage:\t%s [-0123456789ac"
949 #ifdef KERBEROS
950 "k"
951 #endif
952 "MnSu"
953 "] [-B records] [-b blocksize] [-d density]\n"
954 "\t%s [-e inode#,inode#,...] [-E file] [-f file] [-h level] "
955 #ifdef USE_QFA
956 "[-Q file] "
957 #endif
958 "\n\t%s [-s feet] [-T date] "
959 #ifdef HAVE_ZLIB
960 "[-z zlevel] "
961 #endif
962 "filesystem\n"
963 "\t%s [-W | -w]\n",
964 __progname, white, white, __progname);
965 exit(X_STARTUP);
966 }
967
968 /*
969 * Pick up a numeric argument. It must be nonnegative and in the given
970 * range (except that a vmax of 0 means unlimited).
971 */
972 static long
973 numarg(const char *meaning, long vmin, long vmax)
974 {
975 char *p;
976 long val;
977
978 val = strtol(optarg, &p, 10);
979 if (*p)
980 errx(X_STARTUP, "illegal %s -- %s", meaning, optarg);
981 if (val < vmin || (vmax && val > vmax))
982 errx(X_STARTUP, "%s must be between %ld and %ld", meaning, vmin, vmax);
983 return (val);
984 }
985
986 void
987 sig(int signo)
988 {
989 switch(signo) {
990 case SIGALRM:
991 case SIGBUS:
992 case SIGFPE:
993 case SIGHUP:
994 case SIGTERM:
995 case SIGTRAP:
996 if (pipeout || fifoout)
997 quit("Signal on pipe: cannot recover\n");
998 msg("Rewriting attempted as response to unknown signal: %d.\n", signo);
999 (void)fflush(stderr);
1000 (void)fflush(stdout);
1001 close_rewind();
1002 exit(X_REWRITE);
1003 /* NOTREACHED */
1004 case SIGSEGV:
1005 msg("SIGSEGV: ABORTING!\n");
1006 (void)signal(SIGSEGV, SIG_DFL);
1007 (void)kill(0, SIGSEGV);
1008 /* NOTREACHED */
1009 }
1010 }
1011
1012 const char *
1013 rawname(const char *cp)
1014 {
1015 #ifdef __linux__
1016 return cp;
1017 #else /* __linux__ */
1018 static char rawbuf[MAXPATHLEN];
1019 char *dp = strrchr(cp, '/');
1020
1021 if (dp == NULL)
1022 return (NULL);
1023 (void)strncpy(rawbuf, cp, min(dp-cp, MAXPATHLEN - 1));
1024 rawbuf[min(dp-cp, MAXPATHLEN-1)] = '\0';
1025 (void)strncat(rawbuf, "/r", MAXPATHLEN - 1 - strlen(rawbuf));
1026 (void)strncat(rawbuf, dp + 1, MAXPATHLEN - 1 - strlen(rawbuf));
1027 return (rawbuf);
1028 #endif /* __linux__ */
1029 }
1030
1031 /*
1032 * obsolete --
1033 * Change set of key letters and ordered arguments into something
1034 * getopt(3) will like.
1035 */
1036 static void
1037 obsolete(int *argcp, char **argvp[])
1038 {
1039 int argc, flags;
1040 char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
1041
1042 /* Setup. */
1043 argv = *argvp;
1044 argc = *argcp;
1045
1046 /* Return if no arguments or first argument has leading dash. */
1047 ap = argv[1];
1048 if (argc == 1 || *ap == '-')
1049 return;
1050
1051 /* Allocate space for new arguments. */
1052 if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
1053 (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
1054 err(X_STARTUP, "malloc new args");
1055
1056 *nargv++ = *argv;
1057 argv += 2;
1058
1059 for (flags = 0; *ap; ++ap) {
1060 switch (*ap) {
1061 case 'B':
1062 case 'b':
1063 case 'd':
1064 case 'e':
1065 case 'E':
1066 case 'f':
1067 case 'F':
1068 case 'h':
1069 case 'L':
1070 case 'Q':
1071 case 's':
1072 case 'T':
1073 if (*argv == NULL) {
1074 warnx("option requires an argument -- %c", *ap);
1075 usage();
1076 }
1077 if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
1078 err(X_STARTUP, "malloc arg");
1079 nargv[0][0] = '-';
1080 nargv[0][1] = *ap;
1081 (void)strcpy(&nargv[0][2], *argv);
1082 ++argv;
1083 ++nargv;
1084 break;
1085 default:
1086 if (!flags) {
1087 *p++ = '-';
1088 flags = 1;
1089 }
1090 *p++ = *ap;
1091 break;
1092 }
1093 }
1094
1095 /* Terminate flags. */
1096 if (flags) {
1097 *p = '\0';
1098 *nargv++ = flagsp;
1099 }
1100
1101 /* Copy remaining arguments. */
1102 while ((*nargv++ = *argv++));
1103
1104 /* Update argument count. */
1105 *argcp = nargv - *argvp - 1;
1106 }
1107
1108 /*
1109 * This tests whether an inode is in the exclude list
1110 */
1111 int
1112 exclude_ino(dump_ino_t ino)
1113 {
1114 /* 04-Feb-00 ILC */
1115 if (iexclude_num) { /* if there are inodes in the exclude list */
1116 int idx; /* then check this inode against it */
1117 for (idx = 0; idx < iexclude_num; idx++)
1118 if (ino == iexclude_list[idx])
1119 return 1;
1120 }
1121 return 0;
1122 }
1123
1124 /*
1125 * This tests adds an inode to the exclusion list if it isn't already there
1126 */
1127 void
1128 do_exclude_ino(dump_ino_t ino, const char *reason)
1129 {
1130 if (!exclude_ino(ino)) {
1131 if (iexclude_num == IEXCLUDE_MAXNUM) {
1132 msg("Too many exclude options\n");
1133 msg("The ENTIRE dump is aborted.\n");
1134 exit(X_STARTUP);
1135 }
1136 if (reason)
1137 msg("Added inode %u to exclude list (%s)\n",
1138 ino, reason);
1139 else
1140 msg("Added inode %u to exclude list\n", ino);
1141 iexclude_list[iexclude_num++] = ino;
1142 }
1143 }
1144
1145 static void
1146 do_exclude_ino_str(char * ino) {
1147 char *r;
1148 unsigned long inod;
1149
1150 inod = strtoul(ino, &r, 10);
1151 if (*r != '\0' || inod <= ROOTINO) {
1152 msg("Invalid inode argument %s\n", ino);
1153 msg("The ENTIRE dump is aborted.\n");
1154 exit(X_STARTUP);
1155 }
1156 do_exclude_ino(inod, NULL);
1157 }
1158
1159 /*
1160 * This reads a file containing one inode number per line and exclude them all
1161 */
1162 static void
1163 do_exclude_from_file(char *file) {
1164 FILE *f;
1165 char *p, fname[MAXPATHLEN];
1166
1167
1168 if (!( f = fopen(file, "r")) ) {
1169 msg("Cannot open file for reading: %s\n", file);
1170 msg("The ENTIRE dump is aborted.\n");
1171 exit(X_STARTUP);
1172 }
1173 while (( p = fgets(fname, MAXPATHLEN, f))) {
1174 if ( *p && *(p + strlen(p) - 1) == '\n' ) /* possible null string */
1175 *(p + strlen(p) - 1) = '\0';
1176 if ( !*p ) /* skip empty lines */
1177 continue;
1178 do_exclude_ino_str(p);
1179 }
1180 fclose(f);
1181 }
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