source: MondoRescue/trunk/mondo/mondo/common/libmondo-stream.c@ 688

Last change on this file since 688 was 688, checked in by bcornec, 18 years ago

Huge memory management patch.
Still not finished but a lot as been done.
What remains is around some functions returning strings, and some structure members.
(Could not finish due to laptop failure !)
  • Property svn:keywords set to Id
File size: 46.8 KB
Line 
1/* $Id: libmondo-stream.c 688 2006-07-17 13:44:46Z bcornec $
2
3...tools for talking to tapes, Monitas streams, etc.
4*/
5
6/*
7 *
8 * @file
9 * Functions for writing data to/reading data from streams (tape, CD stream, etc.)
10 */
11
12#include <unistd.h>
13
14#include "my-stuff.h"
15#include "mondostructures.h"
16#include "libmondo-devices.h"
17#include "libmondo-stream.h"
18#include "libmondo-string-EXT.h"
19#include "libmondo-files-EXT.h"
20#include "newt-specific-EXT.h"
21#include "libmondo-fork-EXT.h"
22#include "libmondo-tools-EXT.h"
23#include "libmondo-fifo-EXT.h"
24
25#define EXTRA_TAPE_CHECKSUMS
26
27extern bool g_sigpipe;
28extern int g_tape_buffer_size_MB;
29
30/**
31 * @addtogroup globalGroup
32 * @{
33 */
34/**
35 * The file pointer for the opened tape/CD stream.
36 * Opened and closed by openin_tape(), openin_cdstream(),
37 * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
38 * closeout_tape(), and closeout_cdstream().
39 */
40FILE *g_tape_stream = NULL;
41
42
43/**
44 * The position (in kilobytes) where we are on the tape.
45 */
46long long g_tape_posK = 0;
47
48/**
49 * The current media number we're using. This value is 1-based.
50 */
51int g_current_media_number = -1;
52
53/**
54 * The tape catalog that keeps track of files written to tape.
55 */
56struct s_tapecatalog *g_tapecatalog;
57
58/* @} - end of globalGroup */
59
60int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo);
61
62
63
64
65
66/**
67 * @addtogroup streamGroup
68 * @{
69 */
70/**
71 * Close the global output file descriptor which Mondo has used to read
72 * from the CD stream.
73 * @param bkpinfo The backup information structure. Passed directly to closein_tape().
74 * @return 0 for success, nonzero for failure.
75 * @note This should be called by restore processes only.
76 */
77int closein_cdstream(struct s_bkpinfo *bkpinfo)
78{
79 return (closein_tape(bkpinfo));
80}
81
82
83/**
84 * Close the global output file descriptor which Mondo has used to read
85 * from buffer or dd, which read from the tape.
86 * @param bkpinfo The backup information structure. Unused.
87 * @return 0 for success, nonzero for failure.
88 * @note This should be called by restore processes only.
89 * @note This function also works for cdstreams for now, but don't count on this behavior.
90 * @bug @p bkpinfo parameter is unused.
91 */
92int closein_tape(struct s_bkpinfo *bkpinfo)
93{
94 /*@ int's ******************************************************* */
95 int retval = 0;
96 int res = 0;
97 int ctrl_chr = '\0';
98
99 /*@ long long's ************************************************* */
100 long long size;
101 char *blk;
102 int i;
103
104 blk = (char *) malloc(256 * 1024);
105
106 log_it("closein_tape() -- entering");
107 res = read_header_block_from_stream(&size, NULL, &ctrl_chr);
108 retval += res;
109 if (ctrl_chr != BLK_END_OF_BACKUP) {
110 wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
111 }
112 res = read_header_block_from_stream(&size, NULL, &ctrl_chr);
113 retval += res;
114 if (ctrl_chr != BLK_END_OF_TAPE) {
115 wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
116 }
117 for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
118 (void) fread(blk, 1, 256 * 1024, g_tape_stream);
119 }
120 sleep(1);
121 sync();
122 sleep(1);
123 paranoid_pclose(g_tape_stream);
124 log_it("closein_tape() -- leaving");
125 if (!bkpinfo->please_dont_eject) {
126 eject_device(bkpinfo->media_device);
127 }
128 paranoid_free(blk);
129 paranoid_free(g_tapecatalog);
130 return (retval);
131}
132
133
134
135/**
136 * Close the global output file descriptor which Mondo has been using to write
137 * to the tape device (via buffer or dd).
138 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
139 * @return 0 for success, nonzero for failure.
140 * @note This should be called by backup processes only.
141 */
142int closeout_tape(struct s_bkpinfo *bkpinfo)
143{
144 /*@ int's ******************************************************* */
145 int retval = 0;
146
147 /*@ long long's ************************************************* */
148 int i;
149 char *blk;
150
151 blk = (char *) malloc(256 * 1024);
152
153 sleep(1);
154 sync();
155 sleep(1);
156 log_it("closeout_tape() -- entering");
157 retval +=
158 write_header_block_to_stream((off_t)0, "end-of-backup",
159 BLK_END_OF_BACKUP);
160 retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
161 /* write 1MB of crap */
162 for (i = 0; i < 256 * 1024; i++) {
163 blk[i] = (int) (random() & 0xFF);
164 }
165 for (i = 0; i < 4 * 8; i++) {
166 (void) fwrite(blk, 1, 256 * 1024, g_tape_stream);
167 if (should_we_write_to_next_tape
168 (bkpinfo->media_size[g_current_media_number], (off_t)256 * 1024)) {
169 start_to_write_to_next_tape(bkpinfo);
170 }
171 }
172 sleep(2);
173 paranoid_pclose(g_tape_stream);
174 log_it("closeout_tape() -- leaving");
175 for (i = 0; i < g_tapecatalog->entries; i++) {
176 log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
177 (g_tapecatalog->el[i].type ==
178 fileset) ? "fileset" : "bigslice",
179 g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux,
180 g_tapecatalog->el[i].tape_posK);
181 }
182 paranoid_free(blk);
183 paranoid_free(g_tapecatalog);
184 return (retval);
185}
186
187
188
189bool mt_says_tape_exists(char *dev)
190{
191 char *command;
192 int res;
193
194 asprintf(&command, "mt -f %s status", dev);
195 res = run_program_and_log_output(command, 1);
196 paranoid_free(command);
197 if (res) {
198 return (FALSE);
199 } else {
200 return (TRUE);
201 }
202}
203
204
205
206/**
207 * Determine the name and size of the tape device. Tries the SCSI tape for
208 * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
209 * @param dev Where to put the found tape device.
210 * @param siz Where to put the tape size (a string like "4GB"). Should be freed by caller
211 * @return 0 if success, nonzero if failure (in which @p dev and @p siz are undefined).
212 */
213int find_tape_device_and_size(char *dev, char *siz)
214{
215 char *tmp = NULL;
216 char *tmp1 = NULL;
217 char *command = NULL;
218 char *cdr_exe = NULL;
219 int res = 0;
220
221 log_to_screen("I am looking for your tape streamer. Please wait.");
222 dev = NULL;
223 siz = NULL;
224 if (find_home_of_exe("cdrecord")) {
225 asprintf(&cdr_exe, "cdrecord");
226 } else {
227 asprintf(&cdr_exe, "dvdrecord");
228 }
229 asprintf(&command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l",
230 cdr_exe);
231 tmp = call_program_and_get_last_line_of_output(command);
232 paranoid_free(command);
233
234 if (atoi(tmp) != 1) {
235 log_it
236 ("Either too few or too many tape streamers for me to detect...");
237 asprintf(&dev, VANILLA_SCSI_TAPE"0");
238 paranoid_free(tmp);
239 paranoid_free(cdr_exe);
240 return 1;
241 }
242 paranoid_free(tmp);
243
244 asprintf(&command,
245 "%s -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | cut -d' ' -f2 | head -n1",
246 cdr_exe);
247 tmp = call_program_and_get_last_line_of_output(command);
248 paranoid_free(command);
249 if (strlen(tmp) < 2) {
250 log_it("Could not find tape device");
251 paranoid_free(tmp);
252 paranoid_free(cdr_exe);
253 return 1;
254 }
255 paranoid_free(tmp);
256
257 asprintf(&command,
258 "%s -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | cut -d' ' -f3 | cut -d')' -f1 | head -n1",
259 cdr_exe);
260 paranoid_free(cdr_exe);
261
262 tmp = call_program_and_get_last_line_of_output(command);
263 paranoid_free(command);
264
265 asprintf(&dev, VANILLA_SCSI_TAPE"%s", tmp);
266 paranoid_free(tmp);
267
268 if (!mt_says_tape_exists(dev)) {
269 paranoid_free(dev);
270
271 asprintf(&dev, ALT_TAPE"%s", tmp);
272 if (!mt_says_tape_exists(dev)) {
273 log_it("Cannot openin %s", dev);
274 paranoid_free(dev);
275
276 asprintf(&dev, VANILLA_SCSI_TAPE"0");
277 if (!mt_says_tape_exists(dev)) {
278 log_it("Cannot openin %s", dev);
279 paranoid_free(dev);
280
281 asprintf(&dev, "/dev/osst0");
282 if (!mt_says_tape_exists(dev)) {
283 res++;
284 } else {
285 res = 0;
286 }
287 }
288 }
289 }
290
291 log_it("At this point, dev = %s and res = %d", dev, res);
292
293 tmp = call_program_and_get_last_line_of_output("\
294cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | \
295grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | \
296awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'");
297
298 if (mt_says_tape_exists(dev)) {
299 res = 0;
300 } else {
301 log_it("Turning %s", dev);
302 paranoid_free(tmp);
303 asprintf(&tmp1,
304 (strrchr(dev, '/') != NULL) ? strrchr(dev, '/') : dev);
305 paranoid_free(dev);
306 asprintf(&dev, "/dev/os%s", tmp1);
307 paranoid_free(tmp1);
308
309 log_it("...into %s", dev);
310 if (mt_says_tape_exists(dev)) {
311 res = 0;
312 } else {
313 res++;
314 }
315 }
316
317 log_it("res=%d; dev=%s", res, dev);
318
319 if (res) {
320 paranoid_free(tmp);
321 return (res);
322 }
323
324 if (strlen(tmp) < 2) {
325 log_it("Warning - size of tape unknown");
326 paranoid_free(tmp);
327 return (0);
328 } else {
329 siz = tmp;
330 return (0);
331 }
332}
333
334int read_EXAT_files_from_tape(struct s_bkpinfo *bkpinfo,
335 long long *ptmp_size, char *tmp_fname,
336 int *pctrl_chr, char *xattr_fname,
337 char *acl_fname)
338{
339 int res = 0;
340 int retval = 0;
341 char *fname = (char *)&res; /* Should NOT be NULL */
342
343// xattr
344 res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
345 if (*pctrl_chr != BLK_START_EXAT_FILE) {
346 wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
347 }
348 if (!strstr(fname, "xattr")) {
349 fatal_error("Wrong order, sunshine.");
350 }
351 paranoid_free(fname);
352 fname = (char *)&res;
353 read_file_from_stream_to_file(bkpinfo, xattr_fname, *ptmp_size);
354 res = read_header_block_from_stream(ptmp_size, NULL, pctrl_chr);
355 if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
356 wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
357 }
358 // acl
359 res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
360 if (!strstr(fname, "acl")) {
361 fatal_error("Wrong order, sunshine.");
362 }
363 paranoid_free(fname);
364 fname = (char *)&res;
365 if (*pctrl_chr != BLK_START_EXAT_FILE) {
366 wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
367 }
368 read_file_from_stream_to_file(bkpinfo, acl_fname, *ptmp_size);
369 res = read_header_block_from_stream(ptmp_size, NULL, pctrl_chr);
370 if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
371 wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
372 }
373 res = read_header_block_from_stream(ptmp_size, NULL, pctrl_chr);
374 if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
375 wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
376 }
377 // tarball itself
378 res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
379 log_msg(1, "Got xattr and acl; now looking for afioball");
380 tmp_fname = fname;
381 return (retval);
382}
383
384
385int write_EXAT_files_to_tape(struct s_bkpinfo *bkpinfo, char *xattr_fname,
386 char *acl_fname)
387{
388 int res = 0;
389 // EXATs
390 write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
391 BLK_START_EXTENDED_ATTRIBUTES);
392 // xattr
393 write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
394 BLK_START_EXAT_FILE);
395 write_file_to_stream_from_file(bkpinfo, xattr_fname);
396 write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
397// acl
398 write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
399 BLK_START_EXAT_FILE);
400 write_file_to_stream_from_file(bkpinfo, acl_fname);
401 write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
402 write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
403 BLK_STOP_EXTENDED_ATTRIBUTES);
404 return (res);
405}
406
407
408
409
410/**
411 * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
412 * @param tapeno The tape number to insist on.
413 * @bug There is currently no way to actually verify that the user has actually
414 * inserted the right tape.
415 */
416void insist_on_this_tape_number(int tapeno)
417{
418 int i;
419 char *tmp;
420
421 log_it("Insisting on tape #%d", tapeno);
422 if (g_current_media_number != tapeno) {
423 // log_it("g_current_media_number = %d", g_current_media_number);
424 asprintf(&tmp,
425 _("When the tape drive goes quiet, please insert volume %d in this series."),
426 tapeno);
427 popup_and_OK(tmp);
428 paranoid_free(tmp);
429 open_evalcall_form(_("Waiting while the tape drive settles"));
430 } else {
431 open_evalcall_form(_("Waiting while the tape drive rewinds"));
432 }
433
434 for (i = 0; i <= 100; i += 2) {
435 usleep(100000);
436 update_evalcall_form(i);
437 }
438 close_evalcall_form();
439 log_it("I assume user has inserted it. They _say_ they have...");
440 g_current_media_number = tapeno;
441
442 // log_it("g_current_media_number = %d", g_current_media_number);
443 log_it("OK, I've finished insisting. On with the revelry.");
444}
445
446
447/**
448 * Debugging aid - log the offset we're at on the tape (reading or writing).
449 */
450void log_tape_pos(void)
451{
452 log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
453 (long) g_tape_posK >> 10);
454}
455
456
457
458
459/**
460 * Add a file to a collection of recently archived filesets/slices.
461 * The type is determined by the filename: if it contains ".afio." it is
462 * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
463 * otherwise we generate a fatal_error().
464 * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
465 * @param latest_fname The file to place in the collection.
466 * @return 0, always.
467 * @bug Return value is redundant.
468 * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
469 */
470int maintain_collection_of_recent_archives(char *td, char *latest_fname)
471{
472 long long final_alleged_writeK, final_projected_certain_writeK,
473 final_actually_certain_writeK = 0, cposK, bufsize_K;
474 int last, curr, i;
475 t_archtype type = other;
476 char *command;
477 char *tmpdir;
478 char *old_fname;
479
480 bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
481 asprintf(&tmpdir, "%s/tmpfs/backcatalog", td);
482 if (strstr(latest_fname, ".afio.") || strstr(latest_fname, ".star.")) {
483 type = fileset;
484 } else if (strstr(latest_fname, "slice")) {
485 type = biggieslice;
486 } else {
487 log_it("fname = %s", latest_fname);
488 fatal_error
489 ("Unknown type. Internal error in maintain_collection_of_recent_archives()");
490 }
491 mkdir(tmpdir, 0x700);
492 asprintf(&command, "cp -f %s %s", latest_fname, tmpdir);
493 if (run_program_and_log_output(command, 6)) {
494 log_it("Warning - failed to copy %s to backcatalog at %s",
495 latest_fname, tmpdir);
496 }
497 paranoid_free(command);
498
499 last = g_tapecatalog->entries - 1;
500 if (last <= 0) {
501 iamhere("Too early to start deleting from collection.");
502 return (0);
503 }
504 final_alleged_writeK = g_tapecatalog->el[last].tape_posK;
505 final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
506 for (curr = last; curr >= 0; curr--) {
507 cposK = g_tapecatalog->el[curr].tape_posK;
508 if (cposK < final_projected_certain_writeK) {
509 final_actually_certain_writeK = cposK;
510 break;
511 }
512 }
513 if (curr < 0) {
514 iamhere
515 ("Not far enough into tape to start deleting old archives from collection.");
516 return (0);
517 }
518// log_it( "There are %lld KB (more than %d KB) in my backcatalog", final_alleged_writeK - final_actually_certain_writeK, bufsize_K);
519
520 for (i = curr - 1; i >= 0 && curr - i < 10; i--) {
521 asprintf(&old_fname, "%s/%s", tmpdir, g_tapecatalog->el[i].fname);
522 unlink(old_fname);
523 paranoid_free(old_fname);
524 }
525 paranoid_free(tmpdir);
526 return (0);
527}
528
529
530/**
531 * Open the CD stream for input.
532 * @param bkpinfo The backup information structure. Passed to openin_tape().
533 * @return 0 for success, nonzero for failure.
534 * @note Equivalent to openin_tape() for now, but don't count on this behavior.
535 */
536int openin_cdstream(struct s_bkpinfo *bkpinfo)
537{
538 return (openin_tape(bkpinfo));
539}
540
541
542/**
543 * FIFO used to read/write to the tape device.
544 * @bug This seems obsolete now that we call an external @c buffer program. Please look onto this.
545 */
546char g_tape_fifo[MAX_STR_LEN];
547
548int set_tape_block_size_with_mt(char *tapedev,
549 long internal_tape_block_size)
550{
551 char *tmp;
552 int res;
553
554 if (strncmp(tapedev, "/dev/", 5)) {
555 log_msg(1,
556 "Not using 'mt setblk'. This isn't an actual /dev entry.");
557 return (0);
558 }
559 asprintf(&tmp, "mt -f %s setblk %ld", tapedev,
560 internal_tape_block_size);
561 res = run_program_and_log_output(tmp, 3);
562 paranoid_free(tmp);
563 return (res);
564}
565
566
567/**
568 * Open the tape device for input.
569 * @param bkpinfo The backup information structure. Fields used:
570 * - @c bkpinfo->media_device
571 * - @c bkpinfo->tmpdir
572 * @return 0 for success, nonzero for failure.
573 * @note This will also work with a cdstream for now, but don't count on this behavior.
574 */
575int openin_tape(struct s_bkpinfo *bkpinfo)
576{
577 /*@ buffer ***************************************************** */
578 char *datablock;
579 char *tmp;
580 char old_cwd[MAX_STR_LEN];
581 char *outfname;
582 /*@ int ******************************************************* */
583 int i;
584 int j;
585 int res;
586 long length, templong;
587 size_t k;
588 int retval = 0;
589 int ctrl_chr;
590
591 /*@ long long ************************************************* */
592 long long size;
593
594 /*@ pointers ************************************************** */
595 FILE *fout;
596
597 /*@ end vars *************************************************** */
598
599 assert_string_is_neither_NULL_nor_zerolength(bkpinfo->media_device);
600 if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) {
601 fatal_error("Cannot alloc mem for tape catalog");
602 }
603 g_tapecatalog->entries = 0;
604 g_tape_posK = 0;
605 if (g_tape_stream) {
606 log_it("FYI - I won't 'openin' the tape. It's already open.");
607 return (0);
608 }
609 insist_on_this_tape_number(1);
610 asprintf(&outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
611 make_hole_for_file(outfname);
612
613 set_tape_block_size_with_mt(bkpinfo->media_device,
614 bkpinfo->internal_tape_block_size);
615
616 log_it("Opening IN tape");
617 if (!
618 (g_tape_stream =
619 open_device_via_buffer(bkpinfo->media_device, 'r',
620 bkpinfo->internal_tape_block_size))) {
621 log_OS_error(g_tape_fifo);
622 log_to_screen(_("Cannot openin stream device"));
623 return (1);
624 }
625 log_to_screen(_("Reading stream"));
626 log_it("stream device = '%s'", bkpinfo->media_device);
627/* skip data disks */
628 open_evalcall_form("Skipping data disks on stream");
629 log_to_screen(_("Skipping data disks on stream"));
630 if (!(fout = fopen(outfname, "w"))) {
631 log_OS_error(outfname);
632 log_to_screen(_("Cannot openout datadisk all.tar.gz file"));
633 return (-1);
634 }
635 if (!(datablock = (char *) malloc(256 * 1024))) {
636 log_to_screen(_("Unable to malloc 256*1024"));
637 exit(1);
638 }
639 for (i = 0; i < 32; i++) {
640 for (j = 0; j < 4; j++) {
641 for (length = 0, k = 0; length < 256 * 1024; length += k) {
642 k = fread(datablock + length, 1, 256 * 1024 - length,
643 g_tape_stream);
644 }
645 (void) fwrite(datablock, 1, (size_t) length, fout);
646 g_tape_posK += length / 1024;
647 }
648 if (i > 8) // otherwise, 'buffer' distorts calculations
649 {
650 templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
651 update_evalcall_form((int) (templong));
652 }
653 }
654 paranoid_fclose(fout);
655 paranoid_free(datablock);
656 /* find initial blocks */
657 res = read_header_block_from_stream(&size, NULL, &ctrl_chr);
658 retval += res;
659 if (ctrl_chr != BLK_START_OF_TAPE) {
660 wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
661 }
662 res = read_header_block_from_stream(&size, NULL, &ctrl_chr);
663 retval += res;
664 if (ctrl_chr != BLK_START_OF_BACKUP) {
665 wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
666 }
667 close_evalcall_form();
668 log_it("Saved all.tar.gz to '%s'", outfname);
669 (void) getcwd(old_cwd, MAX_STR_LEN);
670 chdir(bkpinfo->tmpdir);
671 asprintf(&tmp, "tar -zxf %s tmp/mondo-restore.cfg 2> /dev/null",
672 outfname);
673 paranoid_system(tmp);
674 paranoid_free(tmp);
675 paranoid_system("cp -f tmp/mondo-restore.cfg . 2> /dev/null");
676 chdir(old_cwd);
677 unlink(outfname);
678 paranoid_free(outfname);
679 return (retval);
680}
681
682
683/**
684 * Start writing to a CD stream.
685 * @param cddev The CD device to openout via cdrecord.
686 * @param speed The speed to write at.
687 * @return 0 for success, nonzero for failure.
688 * @note This should be called only from backup processes.
689 */
690int openout_cdstream(char *cddev, int speed)
691{
692 /*@ buffers ***************************************************** */
693 char *command;
694
695 /*@ end vars *************************************************** */
696
697 /* add 'dummy' if testing */
698 asprintf(&command,
699 "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
700 cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
701 /* initialise the catalog */
702 g_current_media_number = 1;
703 if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) {
704 fatal_error("Cannot alloc mem for tape catalog");
705 }
706 g_tapecatalog->entries = 0;
707 /* log stuff */
708 log_it("Opening OUT cdstream with the command");
709 log_it(command);
710 /* log_it("Let's see what happens, shall we?"); */
711 g_tape_stream = popen(command, "w");
712 paranoid_free(command);
713 if (g_tape_stream) {
714 return (0);
715 } else {
716 log_to_screen(_("Failed to openout to cdstream (fifo)"));
717 return (1);
718 }
719}
720
721
722/**
723 * Start writing to a tape device for the backup.
724 * @param tapedev The tape device to open for writing.
725 * @return 0 for success, nonzero for failure.
726 * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
727 * EXISTING DATA on the tape!
728 */
729int openout_tape(char *tapedev, long internal_tape_block_size)
730{
731 g_current_media_number = 1;
732 if (g_tape_stream) {
733 log_it("FYI - I won't 'openout' the tape. It's already open.");
734 return (0);
735 }
736 if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) {
737 fatal_error("Cannot alloc mem for tape catalog");
738 }
739 g_tapecatalog->entries = 0;
740 g_tape_posK = 0;
741
742 set_tape_block_size_with_mt(tapedev, internal_tape_block_size);
743 log_it("Opening OUT tape");
744 if (!
745 (g_tape_stream =
746 open_device_via_buffer(tapedev, 'w', internal_tape_block_size))) {
747 log_OS_error(g_tape_fifo);
748 log_to_screen(_("Cannot openin stream device"));
749 return (1);
750 }
751 return (0);
752}
753
754
755/**
756 * Copy a file from the opened stream (CD or tape) to @p outfile.
757 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
758 * @param outfile The file to write to.
759 * @param size The size of the file in the input stream.
760 * @return 0 for success, nonzero for failure.
761 */
762int
763read_file_from_stream_to_file(struct s_bkpinfo *bkpinfo, char *outfile,
764 long long size)
765{
766
767 /*@ int ******************************************************** */
768 int res;
769
770 /*@ end vars *************************************************** */
771
772 res = read_file_from_stream_FULL(bkpinfo, outfile, NULL, size);
773
774 return (res);
775}
776
777
778/**
779 * Copy a file from the currently opened stream (CD or tape) to the stream indicated
780 * by @p fout.
781 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
782 * @param fout The stream to write the file to.
783 * @param size The size of the file in bytes.
784 * @return 0 for success, nonzero for failure.
785 */
786int
787read_file_from_stream_to_stream(struct s_bkpinfo *bkpinfo, FILE * fout,
788 long long size)
789{
790
791 /*@ int ******************************************************** */
792 int res;
793
794 /*@ end vars *************************************************** */
795
796 res = read_file_from_stream_FULL(bkpinfo, NULL, fout, size);
797 return (res);
798}
799
800
801/**
802 * Copy a file from the currently opened stream (CD or tape) to either a
803 * @c FILE pointer indicating a currently-opened file, or a filename indicating
804 * a new file to create. This is the backbone function that read_file_from_stream_to_file()
805 * and read_file_from_stream_to_stream() are wrappers for.
806 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
807 * @param outfname If non-NULL, write to this file.
808 * @param foutstream If non-NULL, write to this stream.
809 * @param orig_size The original length of the file in bytes.
810 * @return 0 for success, nonzero for failure.
811 * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
812 */
813int
814read_file_from_stream_FULL(struct s_bkpinfo *bkpinfo, char *outfname,
815 FILE * foutstream, long long orig_size)
816{
817 /*@ buffers ***************************************************** */
818 char *tmp;
819 char *datablock;
820 char *temp_fname = (char *)bkpinfo; /* Should NOT be NULL */
821 char *temp_cksum = (char *)bkpinfo; /* Should NOT be NULL */
822 char *actual_cksum;
823
824 /*@ int ********************************************************* */
825 int retval = 0;
826#ifdef EXTRA_TAPE_CHECKSUMS
827 int i, ch;
828#endif
829 int noof_blocks;
830 int ctrl_chr;
831 int res;
832 /*@ pointers **************************************************** */
833 FILE *fout;
834
835 /*@ long ***************************************************** */
836 long bytes_to_write = 0;
837
838 /*@ long long *************************************************** */
839 long long temp_size, size;
840 long bytes_read, bytes_to_read;
841 long long total_read_from_tape_for_this_file = 0;
842 long long where_I_was_before_tape_change = 0;
843 /*@ unsigned int ************************************************ */
844 unsigned int crc16;
845 unsigned int crctt;
846
847 bool had_to_resync = FALSE;
848
849 /*@ init ******************************************************* */
850 datablock = malloc(TAPE_BLOCK_SIZE);
851 crc16 = 0;
852 crctt = 0;
853 size = orig_size;
854
855 /*@ end vars *************************************************** */
856
857 res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
858 if (orig_size != temp_size && orig_size != -1) {
859 asprintf(&tmp,
860 "output file's size should be %ld K but is apparently %ld K",
861 (long) size >> 10, (long) temp_size >> 10);
862 log_to_screen(tmp);
863 paranoid_free(tmp);
864 }
865 if (ctrl_chr != BLK_START_FILE) {
866 wrong_marker(BLK_START_FILE, ctrl_chr);
867 return (1);
868 }
869 asprintf(&tmp, "Reading file from tape; writing to '%s'; %ld KB",
870 outfname, (long) size >> 10);
871 log_to_screen(tmp);
872 paranoid_free(tmp);
873
874 if (foutstream) {
875 fout = foutstream;
876 } else {
877 fout = fopen(outfname, "w");
878 }
879 if (!fout) {
880 log_OS_error(outfname);
881 log_to_screen(_("Cannot openout file"));
882 return (1);
883 }
884 total_read_from_tape_for_this_file = 0;
885 for (noof_blocks = 0; size > 0;
886 noof_blocks++, size -=
887 bytes_to_write, total_read_from_tape_for_this_file +=
888 bytes_read) {
889 bytes_to_write =
890 (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
891 bytes_to_read = TAPE_BLOCK_SIZE;
892 bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
893 while (bytes_read < bytes_to_read) { // next tape!
894// crctt=crc16=0;
895 where_I_was_before_tape_change = size;
896 log_msg(4, "where_I_was_... = %lld",
897 where_I_was_before_tape_change);
898 start_to_read_from_next_tape(bkpinfo);
899 log_msg(4, "Started reading from next tape.");
900 skip_incoming_files_until_we_find_this_one(temp_fname);
901 log_msg(4, "Skipped irrelevant files OK.");
902 for (size = orig_size; size > where_I_was_before_tape_change;
903 size -= bytes_to_write) {
904 bytes_read =
905 fread(datablock, 1, bytes_to_read, g_tape_stream);
906 }
907 log_msg(4, "'size' is now %lld (should be %lld)", size,
908 where_I_was_before_tape_change);
909 log_to_screen("Successfully re-sync'd tape");
910 had_to_resync = TRUE;
911 bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
912 }
913
914 (void) fwrite(datablock, 1, (size_t) bytes_to_write, fout); // for blocking reasons, bytes_successfully_read_in isn't necessarily the same as bytes_to_write
915
916#ifdef EXTRA_TAPE_CHECKSUMS
917 for (i = 0; i < (int) bytes_to_write; i++) {
918 ch = datablock[i];
919 crc16 = updcrcr(crc16, (unsigned) ch);
920 crctt = updcrc(crctt, (unsigned) ch);
921 }
922#endif
923 }
924 log_msg(6, "Total read from tape for this file = %lld",
925 total_read_from_tape_for_this_file);
926 log_msg(6, ".......................... Should be %lld", orig_size);
927 g_tape_posK += total_read_from_tape_for_this_file / 1024;
928 asprintf(&actual_cksum, "%04x%04x", crc16, crctt);
929 if (foutstream) { /*log_it("Finished writing to foutstream"); */
930 } else {
931 paranoid_fclose(fout);
932 }
933 res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
934 if (ctrl_chr != BLK_STOP_FILE) {
935 wrong_marker(BLK_STOP_FILE, ctrl_chr);
936// fatal_error("Bad marker"); // return(1);
937 }
938 if (strcmp(temp_cksum, actual_cksum)) {
939 asprintf(&tmp, _("actual cksum=%s; recorded cksum=%s"), actual_cksum,
940 temp_cksum);
941 log_to_screen(tmp);
942 paranoid_free(tmp);
943
944 asprintf(&tmp, _("%s (%ld K) is corrupt on tape"), temp_fname,
945 (long) orig_size >> 10);
946 log_to_screen(tmp);
947 paranoid_free(tmp);
948 retval++;
949 }
950 paranoid_free(actual_cksum);
951 paranoid_free(datablock);
952 paranoid_free(temp_fname);
953 paranoid_free(temp_cksum);
954 return (retval);
955}
956
957
958/**
959 * Read a header block from the currently opened stream (CD or tape).
960 * This block indicates the length of the following file (if it's file-related)
961 * the filename (if it's file-related), and the block type.
962 * @param plen Where to put the length of the file. Valid only for file-related header blocks.
963 * @param filename Where to put the name of the file. Valid only for file-related header blocks.
964 * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
965 * @return 0 for success, nonzero for failure.
966 * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
967 */
968int
969read_header_block_from_stream(long long *plen, char *filename,
970 int *pcontrol_char)
971{
972
973 /*@ buffers ***************************************************** */
974 char *tempblock;
975
976 /*@ int ********************************************************* */
977 int i, retval;
978
979 /*@ end vars *************************************************** */
980
981 tempblock = (char *) malloc((size_t) TAPE_BLOCK_SIZE);
982
983 for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
984 tempblock[i] = 0;
985 }
986 while (!(*pcontrol_char = tempblock[7000])) {
987 g_tape_posK +=
988 fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
989 g_tape_stream) / 1024;
990 }
991 memcpy((char *) plen, tempblock + 7001, sizeof(long long));
992 if (strcmp(tempblock + 6000 + *pcontrol_char, "Mondolicious, baby")) {
993 log_it("Bad header block at %ld K", (long) g_tape_posK);
994 }
995 /* the caller manages whether we should allocate or not
996 * by setting the value to NULL (do not allocate) or
997 * something (allocate) */
998 if (filename != NULL) {
999 asprintf(&filename, tempblock + 1000);
1000 }
1001 if (*pcontrol_char == BLK_ABORTED_BACKUP) {
1002 log_to_screen("I can't verify an aborted backup.");
1003 retval = 1;
1004 } else {
1005 retval = 0;
1006 }
1007 for (i = 1000; i < 1020; i++) {
1008 if (tempblock[i] < 32 || tempblock[i] > 126) {
1009 tempblock[i] = ' ';
1010 }
1011 }
1012 tempblock[i] = '\0';
1013 log_msg(6, "%s (fname=%s, size=%ld K)",
1014 marker_to_string(*pcontrol_char), tempblock + 1000,
1015 (long) (*plen) >> 10);
1016 paranoid_free(tempblock);
1017 return (retval);
1018}
1019
1020
1021/**
1022 * Add specified file/slice to the internal catalog of all archives written.
1023 * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
1024 * write the last [buffer size] MB from the catalog to the new tape, so we know
1025 * we have @e all archives on some CD/tape/whatever.
1026 * @param type The type of file we're cataloging (afioball, slice, something else)
1027 * @param number The fileset number or biggiefile number.
1028 * @param aux The slice number if it's a biggiefile, or any other additional info.
1029 * @param fn The original full pathname of the file we're recording.
1030 * @return The index of the record we just added.
1031 */
1032int register_in_tape_catalog(t_archtype type, int number, long aux,
1033 char *fn)
1034{
1035 int last;
1036 char fname[MAX_TAPECAT_FNAME_LEN];
1037 char *p;
1038
1039 p = strrchr(fn, '/');
1040 if (p) {
1041 p++;
1042 } else {
1043 p = fn;
1044 }
1045 strncpy(fname, p, MAX_TAPECAT_FNAME_LEN);
1046 fname[MAX_TAPECAT_FNAME_LEN] = '\0';
1047 last = g_tapecatalog->entries;
1048 if (last >= MAX_TAPECATALOG_ENTRIES) {
1049 log_it
1050 ("Warning - can't log #%d in tape catalog - too many entries already",
1051 number);
1052 return (-1);
1053 }
1054 g_tapecatalog->el[last].type = type;
1055 g_tapecatalog->el[last].number = number;
1056 g_tapecatalog->el[last].aux = aux;
1057 g_tapecatalog->el[last].tape_posK = g_tape_posK;
1058 strcpy(g_tapecatalog->el[last].fname, fname);
1059 g_tapecatalog->entries++;
1060 return (last); // returns the index of the record we've jsut added
1061}
1062
1063
1064/**
1065 * Decide whether we should start a new tape. This is TRUE if we've run out of tape
1066 * (got SIGPIPE) or look like we will.
1067 * @param mediasize The size of the tape in megabytes.
1068 * @param length_of_incoming_file The length of the file we're about to write, in bytes.
1069 * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
1070 * autodetecting the size. Huh?
1071 */
1072
1073/* BERLIOS: Should be reviewed for mediasize being a off_t ??? */
1074bool
1075should_we_write_to_next_tape(long mediasize,
1076 off_t length_of_incoming_file)
1077{
1078 /*@ bool's ***************************************************** */
1079 bool we_need_a_new_tape = FALSE;
1080
1081 /*@ end vars *************************************************** */
1082
1083 if (mediasize == 0) {
1084 return (FALSE);
1085 }
1086 if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
1087 log_it("mediasize = %ld", mediasize);
1088 we_need_a_new_tape = TRUE;
1089 log_to_screen(_("Should have started a new tape/CD already"));
1090 }
1091 if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
1092 mediasize - (SLICE_SIZE * 4 / 1024)) {
1093 log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
1094 mediasize);
1095 we_need_a_new_tape = TRUE;
1096 }
1097 return (we_need_a_new_tape);
1098}
1099
1100
1101/**
1102 * Seek through the stream until we find a header block where the NAME field matches
1103 * @p the_file_I_was_reading. This is useful if you've just started reading from
1104 * a new tape and want to find the file you were reading when the tape ended.
1105 * @param the_file_I_was_reading File name to look for.
1106 * @return 0 for success, nonzero for failure.
1107 */
1108int skip_incoming_files_until_we_find_this_one(char
1109 *the_file_I_was_reading)
1110{
1111 char *pA;
1112 char *pB;
1113 int res;
1114 int ctrl_chr;
1115 char *temp_fname = (char *)&res; /* should NOT be NULL */
1116 char *datablock;
1117 long long temp_size, size;
1118 long bytes_to_write;
1119
1120 datablock = malloc(TAPE_BLOCK_SIZE);
1121 pB = strrchr(the_file_I_was_reading, '/');
1122 if (pB) {
1123 pB++;
1124 } else {
1125 pB = the_file_I_was_reading;
1126 }
1127 log_msg(1, "skip_incoming_..(%s)", pB);
1128 log_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
1129 ctrl_chr = -1;
1130 while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
1131 res =
1132 read_header_block_from_stream(&temp_size, temp_fname,
1133 &ctrl_chr);
1134 if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
1135 break;
1136 }
1137 log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
1138 wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
1139 log_msg(3, "Still trying to re-sync w/ tape");
1140 paranoid_free(temp_fname);
1141 temp_fname = (char *)&res;
1142 }
1143 while (ctrl_chr != BLK_START_FILE) {
1144 res =
1145 read_header_block_from_stream(&temp_size, temp_fname,
1146 &ctrl_chr);
1147 if (ctrl_chr == BLK_START_FILE) {
1148 break;
1149 }
1150 log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
1151 wrong_marker(BLK_START_FILE, ctrl_chr);
1152 log_msg(3, "Still trying to re-sync w/ tape");
1153 /* Do not desallocate when the while condition is met */
1154 if (ctrl_chr != BLK_START_FILE) {
1155 paranoid_free(temp_fname);
1156 temp_fname = (char *)&res;
1157 }
1158 }
1159 pA = strrchr(temp_fname, '/');
1160 if (pA) {
1161 pA++;
1162 } else {
1163 pA = temp_fname;
1164 }
1165 pB = strrchr(the_file_I_was_reading, '/');
1166 if (pB) {
1167 pB++;
1168 } else {
1169 pB = the_file_I_was_reading;
1170 }
1171 while (strcmp(pA, pB)) {
1172 log_msg(6, "Skipping %s (it's not %s)", temp_fname,
1173 the_file_I_was_reading);
1174 for (size = temp_size; size > 0; size -= bytes_to_write) {
1175 bytes_to_write =
1176 (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
1177 // FIXME - needs error-checking and -catching
1178 fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream);
1179 }
1180
1181 paranoid_free(temp_fname);
1182 temp_fname = (char *)&res;
1183 res = read_header_block_from_stream(&temp_size, NULL, &ctrl_chr);
1184 if (ctrl_chr != BLK_STOP_FILE) {
1185 wrong_marker(BLK_STOP_FILE, ctrl_chr);
1186 }
1187 res = read_header_block_from_stream(&temp_size, NULL, &ctrl_chr);
1188 if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
1189 wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
1190 }
1191 res = read_header_block_from_stream(&temp_size, NULL, &ctrl_chr);
1192 if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
1193 wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
1194 }
1195 res =
1196 read_header_block_from_stream(&temp_size, temp_fname,
1197 &ctrl_chr);
1198 if (ctrl_chr != BLK_START_FILE) {
1199 wrong_marker(BLK_START_FILE, ctrl_chr);
1200 }
1201 pA = strrchr(temp_fname, '/');
1202 if (pA) {
1203 pA++;
1204 } else {
1205 pA = temp_fname;
1206 }
1207 /* BERLIOS: useless ?
1208 pB = strrchr(the_file_I_was_reading, '/');
1209 if (pB) {
1210 pB++;
1211 } else {
1212 pB = the_file_I_was_reading;
1213 }
1214 */
1215 }
1216 log_msg(2, "Reading %s (it matches %s)", temp_fname,
1217 the_file_I_was_reading);
1218 paranoid_free(temp_fname);
1219 paranoid_free(datablock);
1220 return (0);
1221}
1222
1223
1224/**
1225 * Start to read from the next tape. Assumes the user has already inserted it.
1226 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
1227 * @return 0 for success, nonzero for failure.
1228 */
1229int start_to_read_from_next_tape(struct s_bkpinfo *bkpinfo)
1230{
1231 /*@ int ********************************************************* */
1232 int res = 0;
1233 int ctrlchr;
1234 long long temp_size;
1235 /*@ end vars *************************************************** */
1236
1237 paranoid_pclose(g_tape_stream);
1238 sync();
1239 sync();
1240 sync();
1241 log_it("Next tape requested.");
1242 insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
1243 log_it("Opening IN the next tape");
1244 if (!
1245 (g_tape_stream =
1246 open_device_via_buffer(bkpinfo->media_device, 'r',
1247 bkpinfo->internal_tape_block_size))) {
1248 log_OS_error(g_tape_fifo);
1249 log_to_screen(_("Cannot openin stream device"));
1250 return (1);
1251 }
1252 g_tape_posK = 0;
1253 g_sigpipe = FALSE;
1254 res += read_header_block_from_stream(&temp_size, NULL, &ctrlchr); /* just in case */
1255 if (ctrlchr != BLK_START_OF_TAPE) {
1256 wrong_marker(BLK_START_OF_TAPE, ctrlchr);
1257 }
1258 res += read_header_block_from_stream(&temp_size, NULL, &ctrlchr); /* just in case */
1259 if (ctrlchr != BLK_START_OF_BACKUP) {
1260 wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
1261 } else {
1262 log_msg(3, "Next tape opened OK. Whoopee!");
1263 }
1264 return (res);
1265}
1266
1267
1268/**
1269 * Start to write to the next tape. Assume the user has already inserted it.
1270 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
1271 * @return 0 for success, nonzero for failure.
1272 */
1273int start_to_write_to_next_tape(struct s_bkpinfo *bkpinfo)
1274{
1275 int res = 0;
1276 char *command;
1277
1278 paranoid_pclose(g_tape_stream);
1279 sync();
1280 sync();
1281 sync();
1282 log_it("New tape requested.");
1283 insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
1284 if (g_current_media_number > MAX_NOOF_MEDIA) {
1285 res++;
1286 log_to_screen(_("Too many tapes. Man, you need to use nfs!"));
1287 }
1288 if (bkpinfo->backup_media_type == cdstream) {
1289 asprintf(&command,
1290 "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
1291 bkpinfo->media_device, bkpinfo->cdrw_speed, MONDO_LOGFILE,
1292 MONDO_LOGFILE);
1293 log_it("Opening OUT to next CD with the command");
1294 log_it(command);
1295 log_it("Let's see what happens, shall we?");
1296 g_tape_stream = popen(command, "w");
1297 paranoid_free(command);
1298 if (!g_tape_stream) {
1299 log_to_screen(_("Failed to openout to cdstream (fifo)"));
1300 return (1);
1301 }
1302 } else {
1303 log_it("Opening OUT to next tape");
1304 if (!
1305 (g_tape_stream =
1306 open_device_via_buffer(bkpinfo->media_device, 'w',
1307 bkpinfo->internal_tape_block_size))) {
1308 log_OS_error(g_tape_fifo);
1309 log_to_screen(_("Cannot openin stream device"));
1310 return (1);
1311 }
1312 }
1313 g_tape_posK = 0;
1314 g_sigpipe = FALSE;
1315 res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
1316 res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
1317 return (res);
1318}
1319
1320
1321/**
1322 * Write a bufferfull of the most recent archives to the tape. The
1323 * rationale behind this is a bit complex. If the previous tape ended
1324 * suddenly (EOF or otherwise) some archives were probably left in the
1325 * buffer. That means that Mondo thinks they have been written, but
1326 * the external binary @c buffer has not actually written them. So to
1327 * be safe, we start the new tape by writing the last bufferfull from
1328 * the old one. This insures that all archives will be on at least
1329 * one tape. Sounds inelegant, but it works.
1330 * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
1331 * @return 0 for success, nonzero for failure.
1332 */
1333int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo)
1334{
1335 int i, last, res = 0;
1336 char *fname;
1337
1338 log_msg(2, "I am now writing back catalog to tape");
1339 last = g_tapecatalog->entries - 1;
1340 for (i = 0; i <= last; i++) {
1341 asprintf(&fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir,
1342 g_tapecatalog->el[i].fname);
1343 if (!does_file_exist(fname)) {
1344 log_msg(6, "Can't write %s - it doesn't exist.", fname);
1345 } else {
1346 write_header_block_to_stream(length_of_file(fname),
1347 "start-backcatalog-afio-or-slice",
1348 BLK_START_AN_AFIO_OR_SLICE);
1349 log_msg(2, "Writing %s", fname);
1350 if (write_file_to_stream_from_file(bkpinfo, fname)) {
1351 res++;
1352 log_msg(2, "%s failed", fname);
1353 }
1354 if (i != last) {
1355 write_header_block_to_stream((off_t)0,
1356 "stop-backcatalog-afio-or-slice",
1357 BLK_STOP_AN_AFIO_OR_SLICE);
1358 }
1359 }
1360 paranoid_free(fname);
1361 }
1362 log_msg(2, "Finished writing back catalog to tape");
1363 return (res);
1364}
1365
1366
1367/**
1368 * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
1369 * @param fname The path to all.tar.gz.
1370 * @return 0 for success, nonzero for failure.
1371 */
1372int write_data_disks_to_stream(char *fname)
1373{
1374 /*@ pointers *************************************************** */
1375 FILE *fin;
1376 char *tmp;
1377
1378 /*@ long ******************************************************* */
1379 long m = -1;
1380 long templong;
1381
1382 /*@ int ******************************************************** */
1383 int i, j;
1384
1385 /*@ buffers **************************************************** */
1386 char tempblock[256 * 1024];
1387
1388 /*@ end vars *************************************************** */
1389
1390 open_evalcall_form(_("Writing data disks to tape"));
1391 log_to_screen(_("Writing data disks to tape"));
1392 log_it("Data disks = %s", fname);
1393 if (!does_file_exist(fname)) {
1394 asprintf(&tmp, _("Cannot find %s"), fname);
1395 log_to_screen(tmp);
1396 paranoid_free(tmp);
1397 return (1);
1398 }
1399 if (!(fin = fopen(fname, "r"))) {
1400 log_OS_error(fname);
1401 fatal_error("Cannot openin the data disk");
1402 }
1403 for (i = 0; i < 32; i++) { /* 32MB */
1404 for (j = 0; j < 4; j++) { /* 256K x 4 = 1MB (1024K) */
1405 if (!feof(fin)) {
1406 m = (long) fread(tempblock, 1, 256 * 1024, fin);
1407 } else {
1408 m = 0;
1409 }
1410 for (; m < 256 * 1024; m++) {
1411 tempblock[m] = '\0';
1412 }
1413 g_tape_posK +=
1414 fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
1415 }
1416 if (i > g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
1417 {
1418 templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
1419 update_evalcall_form((int) (templong));
1420 }
1421 }
1422 paranoid_fclose(fin);
1423 close_evalcall_form();
1424 return (0);
1425}
1426
1427
1428/**
1429 * Copy @p infile to the opened stream (CD or tape).
1430 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
1431 * @param infile The file to write to the stream.
1432 * @return 0 for success, nonzero for failure.
1433 */
1434int write_file_to_stream_from_file(struct s_bkpinfo *bkpinfo, char *infile)
1435{
1436 /*@ buffers **************************************************** */
1437 char *tmp;
1438 char datablock[TAPE_BLOCK_SIZE];
1439 char *checksum;
1440 char *infile_basename;
1441
1442 /*@ int ******************************************************** */
1443 int retval = 0;
1444 int noof_blocks;
1445
1446 /* unsigned int ch; */
1447 unsigned int crc16;
1448 unsigned int crctt;
1449
1450 /*@ pointers *************************************************** */
1451 FILE *fin;
1452 char *p;
1453
1454 /*@ long ******************************************************* */
1455 long bytes_to_read = 0;
1456 long i;
1457
1458 off_t filesize;
1459
1460#ifdef EXTRA_TAPE_CHECKSUMS
1461 int ch;
1462#endif
1463
1464 /*@ initialize ************************************************ */
1465 crc16 = 0;
1466 crctt = 0;
1467
1468 /*@ end vars *************************************************** */
1469
1470 infile_basename = strrchr(infile, '/');
1471 if (infile_basename) {
1472 infile_basename++;
1473 } else {
1474 infile_basename = infile;
1475 }
1476 filesize = length_of_file(infile);
1477 if (should_we_write_to_next_tape
1478 (bkpinfo->media_size[g_current_media_number], filesize)) {
1479 start_to_write_to_next_tape(bkpinfo);
1480 write_backcatalog_to_tape(bkpinfo);
1481 }
1482 p = strrchr(infile, '/');
1483 if (!p) {
1484 p = infile;
1485 } else {
1486 p++;
1487 }
1488 asprintf(&tmp, "Writing file '%s' to tape (%ld KB)", p,
1489 (long) filesize >> 10);
1490 log_it(tmp);
1491 paranoid_free(tmp);
1492
1493 write_header_block_to_stream(filesize, infile_basename,
1494 BLK_START_FILE);
1495//go_here_to_restart_saving_of_file:
1496 if (!(fin = fopen(infile, "r"))) {
1497 log_OS_error(infile);
1498 return (1);
1499 }
1500 for (noof_blocks = 0; filesize > 0;
1501 noof_blocks++, filesize -= bytes_to_read) {
1502 if (filesize < TAPE_BLOCK_SIZE) {
1503 bytes_to_read = (long) filesize;
1504 for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
1505 datablock[i] = '\0';
1506 }
1507 } else {
1508 bytes_to_read = TAPE_BLOCK_SIZE;
1509 }
1510 (void) fread(datablock, 1, (size_t) bytes_to_read, fin);
1511 g_tape_posK += fwrite(datablock, 1, /*bytes_to_read */
1512 (size_t) TAPE_BLOCK_SIZE,
1513 g_tape_stream) / 1024;
1514 if (g_sigpipe) {
1515 iamhere("Sigpipe occurred recently. I'll start a new tape.");
1516 fclose(fin);
1517 g_sigpipe = FALSE;
1518 start_to_write_to_next_tape(bkpinfo);
1519 write_backcatalog_to_tape(bkpinfo); // kinda-sorta recursive :)
1520 return (0);
1521 }
1522#ifdef EXTRA_TAPE_CHECKSUMS
1523 for (i = 0; i < bytes_to_read; i++) {
1524 ch = datablock[i];
1525 crc16 = updcrcr(crc16, (unsigned) ch);
1526 crctt = updcrc(crctt, (unsigned) ch);
1527 }
1528#endif
1529 }
1530 paranoid_fclose(fin);
1531 asprintf(&checksum, "%04x%04x", crc16, crctt);
1532 /* BERLIOS: what does it do ??? */
1533 write_header_block_to_stream((off_t)g_current_media_number, checksum,
1534 BLK_STOP_FILE);
1535 paranoid_free(checksum);
1536// log_it("File '%s' written to tape.", infile);
1537 return (retval);
1538}
1539
1540
1541/**
1542 * Write a header block to the opened stream (CD or tape).
1543 * @param length_of_incoming_file The length to store in the header block.
1544 * Usually matters only if this is a file-related header, in which case it should
1545 * be the length of the file that will follow.
1546 * @param filename The filename to store in the header block. Usually matters
1547 * only if this is a file-related header, in which case this should be the name
1548 * if the file that will follow.
1549 * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
1550 * @return 0 for success, nonzero for failure.
1551 */
1552int
1553write_header_block_to_stream(off_t length_of_incoming_file,
1554 char *filename, int control_char)
1555{
1556 /*@ buffers **************************************************** */
1557 char tempblock[TAPE_BLOCK_SIZE];
1558 char *tmp;
1559 char *p;
1560
1561 /*@ int ******************************************************** */
1562 int i;
1563
1564 off_t olen;
1565
1566 /*@ end vars *************************************************** */
1567
1568
1569 olen = length_of_incoming_file;
1570 p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
1571 if (!p) {
1572 p = filename;
1573 } else {
1574 p++;
1575 }
1576 if (!g_tape_stream) {
1577 log_to_screen
1578 (_("You're not backing up to tape. Why write a tape header?"));
1579 return (1);
1580 }
1581 for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
1582 tempblock[i] = 0;
1583 }
1584 sprintf(tempblock + 6000 + control_char, "Mondolicious, baby");
1585 tempblock[7000] = control_char;
1586 memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
1587 strcpy(tempblock + 1000, filename);
1588 g_tape_posK +=
1589 fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
1590 g_tape_stream) / 1024;
1591 asprintf(&tmp, "%s (fname=%s, size=%ld K)",
1592 marker_to_string(control_char), p,
1593 (long) length_of_incoming_file >> 10);
1594 log_msg(6, tmp);
1595 paranoid_free(tmp);
1596 return (0);
1597}
1598
1599
1600/**
1601 * Log (to screen) an erroneous marker, along with what it should have been.
1602 * @param should_be What we were expecting.
1603 * @param it_is What we got.
1604 */
1605void wrong_marker(int should_be, int it_is)
1606{
1607 /*@ buffer ***************************************************** */
1608 char *tmp;
1609
1610
1611 /*@ end vars *************************************************** */
1612 asprintf(&tmp, _("Wrong marker! (Should be %s, is actually %s)"),
1613 marker_to_string(should_be), marker_to_string(it_is));
1614 log_to_screen(tmp);
1615 paranoid_free(tmp);
1616}
1617
1618/* @} - end of streamGroup */
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