source: MondoRescue/branches/stable/mondo/src/common/libmondo-stream.c@ 1370

Last change on this file since 1370 was 1370, checked in by Bruno Cornec, 17 years ago

Fix a compilation error
  • Property svn:keywords set to Id
File size: 46.4 KB
Line 
1/* $Id: libmondo-stream.c 1370 2007-04-30 00:11:07Z bruno $
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 "mr_mem.h"
16#include "mr_msg.h"
17#include "mr_list.h"
18
19#include "mondostructures.h"
20#include "libmondo-devices.h"
21#include "libmondo-stream.h"
22#include "libmondo-string-EXT.h"
23#include "libmondo-files-EXT.h"
24#include "newt-specific-EXT.h"
25#include "libmondo-fork-EXT.h"
26#include "libmondo-tools-EXT.h"
27#include "libmondo-fifo-EXT.h"
28
29#define EXTRA_TAPE_CHECKSUMS
30
31/*@unused@*/
32//static char cvsid[] = "$Id: libmondo-stream.c 1370 2007-04-30 00:11:07Z bruno $";
33extern bool g_sigpipe;
34extern int g_tape_buffer_size_MB;
35
36extern char *g_getfacl;
37extern char *g_getfattr;
38extern char *MONDO_LOGFILE;
39
40/**
41 * @addtogroup globalGroup
42 * @{
43 */
44/**
45 * The file pointer for the opened tape/CD stream.
46 * Opened and closed by openin_tape(), openin_cdstream(),
47 * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
48 * closeout_tape(), and closeout_cdstream().
49 */
50FILE *g_tape_stream = NULL;
51
52
53/**
54 * The position (in kilobytes) where we are on the tape.
55 */
56long long g_tape_posK = 0;
57
58/**
59 * The current media number we're using. This value is 1-based.
60 */
61int g_current_media_number = -1;
62
63/**
64 * An entry in the tape catalog.
65 */
66struct s_tapecat_entry {
67 /**
68 * The type of archive it is (afioball, slice, or something else).
69 */
70 t_archtype type;
71
72 /**
73 * The filelist number or biggiefile (not slice!) number.
74 */
75 int number;
76
77 /**
78 * The slice number if it's a biggiefile.
79 */
80 long aux;
81
82 /**
83 * The tape position at the point this entry was added.
84 */
85 long long tape_posK;
86
87 /**
88 * The filename of the file cataloged here.
89 */
90 char *fname;
91};
92
93
94/*
95 * The tape catalog that keeps track of files written to tape.
96 * made of a list of @p s_tapecat_entry.
97 * */
98static struct mr_list *tapecatalog;
99
100/* function to free the fname field allocated in te */
101static void mr_free_te(void *data) {
102
103 struct s_tapecat_entry *te = NULL;
104
105 te = (struct s_tapecat_entry *)data;
106 mr_free(te->fname);
107}
108
109/* @} - end of globalGroup */
110
111int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo);
112
113
114/**
115 * @addtogroup streamGroup
116 * @{
117 */
118/**
119 * Close the global output file descriptor which Mondo has used to read
120 * from the CD stream.
121 * @param bkpinfo The backup information structure. Passed directly to closein_tape().
122 * @return 0 for success, nonzero for failure.
123 * @note This should be called by restore processes only.
124 */
125int closein_cdstream(struct s_bkpinfo *bkpinfo)
126{
127 return (closein_tape(bkpinfo));
128}
129
130
131/**
132 * Close the global output file descriptor which Mondo has used to read
133 * from buffer or dd, which read from the tape.
134 * @param bkpinfo The backup information structure. Unused.
135 * @return 0 for success, nonzero for failure.
136 * @note This should be called by restore processes only.
137 * @note This function also works for cdstreams for now, but don't count on this behavior.
138 * @bug @p bkpinfo parameter is unused.
139 */
140int closein_tape(struct s_bkpinfo *bkpinfo)
141{
142 /*@ int's ******************************************************* */
143 int retval = 0;
144 int res = 0;
145 int ctrl_chr = '\0';
146
147 /*@ buffers ***************************************************** */
148 char fname[MAX_STR_LEN];
149
150 /*@ long long's ************************************************* */
151 long long size;
152 char *blk;
153 int i;
154
155 blk = (char *) mr_malloc(256 * 1024);
156
157 log_it("closein_tape() -- entering");
158 res = read_header_block_from_stream(&size, fname, &ctrl_chr);
159 retval += res;
160 if (ctrl_chr != BLK_END_OF_BACKUP) {
161 wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
162 }
163 res = read_header_block_from_stream(&size, fname, &ctrl_chr);
164 retval += res;
165 if (ctrl_chr != BLK_END_OF_TAPE) {
166 wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
167 }
168 for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
169 (void) fread(blk, 1, 256 * 1024, g_tape_stream);
170 }
171 sleep(1);
172 sync();
173 sleep(1);
174 paranoid_pclose(g_tape_stream);
175 log_it("closein_tape() -- leaving");
176 if (!bkpinfo->please_dont_eject) {
177 eject_device(bkpinfo->media_device);
178 }
179 mr_free(blk);
180 mr_list_free(tapecatalog);
181 return (retval);
182}
183
184
185
186/**
187 * Close the global output file descriptor which Mondo has been using to write
188 * to the tape device (via buffer or dd).
189 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
190 * @return 0 for success, nonzero for failure.
191 * @note This should be called by backup processes only.
192 */
193int closeout_tape(struct s_bkpinfo *bkpinfo)
194{
195 /*@ int's ******************************************************* */
196 int retval = 0;
197
198 /*@ long long's ************************************************* */
199 int i = 0;
200 char *blk = NULL;
201 struct mr_list_elt *elt = NULL;
202 struct s_tapecat_entry *te = NULL;
203
204 blk = (char *) mr_malloc(256 * 1024);
205
206 sleep(1);
207 sync();
208 sleep(1);
209 log_it("closeout_tape() -- entering");
210 retval +=
211 write_header_block_to_stream((off_t)0, "end-of-backup",
212 BLK_END_OF_BACKUP);
213 retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
214 /* write 1MB of crap */
215 for (i = 0; i < 256 * 1024; i++) {
216 blk[i] = (int) (random() & 0xFF);
217 }
218 for (i = 0; i < 4 * 8; i++) {
219 (void) fwrite(blk, 1, 256 * 1024, g_tape_stream);
220 if (should_we_write_to_next_tape
221 (bkpinfo->media_size, (off_t)256 * 1024)) {
222 start_to_write_to_next_tape(bkpinfo);
223 }
224 }
225 sleep(2);
226 paranoid_pclose(g_tape_stream);
227 log_it("closeout_tape() -- leaving");
228 elt = tapecatalog->first;
229 while (elt != NULL) {
230 te = (struct s_tapecat_entry *)elt->data;
231 log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
232 (te->type == fileset) ? "fileset" : "bigslice",
233 te->number, te->aux, te->tape_posK);
234 i++;
235 elt = elt->next;
236 }
237 mr_free(blk);
238 mr_list_free(tapecatalog);
239 return (retval);
240}
241
242
243
244bool mt_says_tape_exists(char *dev)
245{
246 char *command;
247 int res;
248
249 mr_asprintf(&command, "mt -f %s status", dev);
250 res = run_program_and_log_output(command, 1);
251 mr_free(command);
252 if (res) {
253 return (FALSE);
254 } else {
255 return (TRUE);
256 }
257}
258
259
260
261/**
262 * Determine the name and size of the tape device. Tries the SCSI tape for
263 * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
264 * @param dev Where to put the found tape device.
265 * @param siz Where to put the tape size (a string like "4GB")
266 * @return 0 if success, nonzero if failure (in which @p dev and @p siz are undefined).
267 */
268int find_tape_device_and_size(char *dev, char *siz)
269{
270 char tmp[MAX_STR_LEN];
271 char *command = NULL;
272 char cdr_exe[MAX_STR_LEN];
273 int res;
274
275 log_to_screen("I am looking for your tape streamer. Please wait.");
276 dev[0] = siz[0] = '\0';
277 if (find_home_of_exe("cdrecord")) {
278 strcpy(cdr_exe, "cdrecord");
279 } else {
280 strcpy(cdr_exe, "dvdrecord");
281 }
282 mr_asprintf(&command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l",
283 cdr_exe);
284 strcpy(tmp, call_program_and_get_last_line_of_output(command));
285 mr_free(command);
286 if (atoi(tmp) != 1) {
287 log_it
288 ("Either too few or too many tape streamers for me to detect...");
289 strcpy(dev, VANILLA_SCSI_TAPE);
290 return 1;
291 }
292 mr_asprintf(&command,
293 "%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",
294 cdr_exe);
295 strcpy(tmp, call_program_and_get_last_line_of_output(command));
296 mr_free(command);
297 if (strlen(tmp) < 2) {
298 log_it("Could not find tape device");
299 return 1;
300 }
301 mr_asprintf(&command,
302 "%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",
303 cdr_exe);
304 strcpy(tmp, call_program_and_get_last_line_of_output(command));
305 mr_free(command);
306
307 strcpy(dev, VANILLA_SCSI_TAPE);
308 dev[strlen(dev) - 1] = '\0';
309 strcat(dev, tmp); // e.g. '/dev/st0' becomes '/dev/stN'
310 res = 0;
311 if (!mt_says_tape_exists(dev)) {
312 strcpy(dev, ALT_TAPE);
313 if (!mt_says_tape_exists(dev)) {
314 log_it("Cannot openin %s", dev);
315 strcpy(dev, "/dev/st0");
316 if (!mt_says_tape_exists(dev)) {
317 log_it("Cannot openin %s", dev);
318 strcpy(dev, "/dev/osst0");
319 if (!mt_says_tape_exists(dev)) {
320 res++;
321 } else {
322 res = 0;
323 }
324 }
325 }
326 }
327
328 log_it("At this point, dev = %s and res = %d", dev, res);
329
330 strcpy(tmp, call_program_and_get_last_line_of_output("\
331cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | \
332grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | \
333awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'"));
334
335 if (mt_says_tape_exists(dev)) {
336 res = 0;
337 } else {
338 log_it("Turning %s", dev);
339 strcpy(tmp, (strrchr(dev, '/') != NULL) ? strrchr(dev, '/') : dev);
340 sprintf(dev, "/dev/os%s", tmp);
341 log_it("...into %s", dev);
342 if (mt_says_tape_exists(dev)) {
343 res = 0;
344 } else {
345 res++;
346 }
347 }
348
349 siz[0] = '\0';
350 log_it("res=%d; dev=%s", res, dev);
351
352 if (res) {
353 return (res);
354 }
355
356 if (strlen(tmp) < 2) {
357 siz[0] = '\0';
358 log_it("Warning - size of tape unknown");
359 return (0);
360 } else {
361 strcpy(siz, tmp);
362 return (0);
363 }
364}
365
366
367int read_EXAT_files_from_tape(struct s_bkpinfo *bkpinfo,
368 long long *ptmp_size, char *tmp_fname,
369 int *pctrl_chr, char *xattr_fname,
370 char *acl_fname)
371{
372 int res = 0;
373 int retval = 0;
374 char *fname = (char *)&res; /* Should NOT be NULL */
375
376// xattr
377 if (g_getfattr) {
378 res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
379 if (*pctrl_chr != BLK_START_EXAT_FILE) {
380 wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
381 }
382 if (!strstr(fname, "xattr")) {
383 fatal_error("Wrong order, sunshine.");
384 }
385 read_file_from_stream_to_file(bkpinfo, xattr_fname, *ptmp_size);
386 res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
387 if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
388 wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
389 }
390 mr_msg(1, "Got xattr");
391 }
392 // acl
393 if (g_getfacl) {
394 res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
395 if (!strstr(fname, "acl")) {
396 fatal_error("Wrong order, sunshine.");
397 }
398 if (*pctrl_chr != BLK_START_EXAT_FILE) {
399 wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
400 }
401 read_file_from_stream_to_file(bkpinfo, acl_fname, *ptmp_size);
402 res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
403 if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
404 wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
405 }
406 res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
407 if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
408 wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
409 }
410 mr_msg(1, "Got acl");
411 }
412 // tarball itself
413 res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
414 mr_msg(1, "now looking for afioball");
415 return (retval);
416}
417
418
419int write_EXAT_files_to_tape(struct s_bkpinfo *bkpinfo, char *xattr_fname,
420 char *acl_fname)
421{
422 int res = 0;
423 if (g_getfattr) {
424 // xattr
425 write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
426 BLK_START_EXTENDED_ATTRIBUTES);
427 write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
428 BLK_START_EXAT_FILE);
429 write_file_to_stream_from_file(bkpinfo, xattr_fname);
430 write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
431 }
432 if (g_getfacl) {
433 // acl
434 write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
435 BLK_START_EXAT_FILE);
436 write_file_to_stream_from_file(bkpinfo, acl_fname);
437 write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
438 write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
439 BLK_STOP_EXTENDED_ATTRIBUTES);
440 }
441 return (res);
442}
443
444
445
446
447/**
448 * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
449 * @param tapeno The tape number to insist on.
450 * @bug There is currently no way to actually verify that the user has actually
451 * inserted the right tape.
452 */
453void insist_on_this_tape_number(int tapeno)
454{
455 int i;
456 char *tmp = NULL;
457
458 log_it("Insisting on tape #%d", tapeno);
459 if (g_current_media_number != tapeno) {
460 // log_it("g_current_media_number = %d", g_current_media_number);
461 mr_asprintf(&tmp,
462 _("When the tape drive goes quiet, please insert volume %d in this series."),
463 tapeno);
464 popup_and_OK(tmp);
465 mr_free(tmp);
466 open_evalcall_form(_("Waiting while the tape drive settles"));
467 } else {
468 open_evalcall_form(_("Waiting while the tape drive rewinds"));
469 }
470
471 for (i = 0; i <= 100; i += 2) {
472 usleep(100000);
473 update_evalcall_form(i);
474 }
475 close_evalcall_form();
476 log_it("I assume user has inserted it. They _say_ they have...");
477 g_current_media_number = tapeno;
478
479 // log_it("g_current_media_number = %d", g_current_media_number);
480 log_it("OK, I've finished insisting. On with the revelry.");
481}
482
483
484/**
485 * Debugging aid - log the offset we're at on the tape (reading or writing).
486 */
487void log_tape_pos(void)
488{
489 log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
490 (long) g_tape_posK >> 10);
491}
492
493
494/**
495 * Add a file to a collection of recently archived filesets/slices.
496 * The type is determined by the filename: if it contains ".afio." it is
497 * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
498 * otherwise we generate a fatal_error().
499 * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
500 * @param latest_fname The file to place in the collection.
501 * @return 0, always.
502 * @bug Return value is redundant.
503 * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
504 */
505int maintain_collection_of_recent_archives(char *td, char *latest_fname)
506{
507 long long final_alleged_writeK, final_projected_certain_writeK,
508 final_actually_certain_writeK = 0, cposK, bufsize_K;
509 int last, i;
510 t_archtype type = other;
511 char *command = NULL;
512 char *tmpdir = NULL;
513 char *old_fname = NULL;
514 struct mr_list_elt *elt = NULL;
515 struct s_tapecat_entry *te = NULL;
516
517 bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
518 if (strstr(latest_fname, ".afio.") || strstr(latest_fname, ".star.")) {
519 type = fileset;
520 } else if (strstr(latest_fname, "slice")) {
521 type = biggieslice;
522 } else {
523 log_it("fname = %s", latest_fname);
524 fatal_error
525 ("Unknown type. Internal error in maintain_collection_of_recent_archives()");
526 }
527
528 mr_asprintf(&tmpdir, "%s/tmpfs/backcatalog", td);
529 mkdir(tmpdir, 0x700);
530 mr_asprintf(&command, "cp -f %s %s", latest_fname, tmpdir);
531 if (run_program_and_log_output(command, 6)) {
532 log_it("Warning - failed to copy %s to backcatalog at %s",
533 latest_fname, tmpdir);
534 }
535 mr_free(command);
536
537 last = mr_list_length(tapecatalog) - 1;
538 if (last <= 0) {
539 iamhere("Too early to start deleting from collection.");
540 return (0);
541 }
542 elt = tapecatalog->last;
543 te = (struct s_tapecat_entry *)elt->data;
544 final_alleged_writeK = te->tape_posK;
545 final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
546 while (elt != NULL) {
547 te = (struct s_tapecat_entry *)elt->data;
548 cposK = te->tape_posK;
549 if (cposK < final_projected_certain_writeK) {
550 final_actually_certain_writeK = cposK;
551 break;
552 }
553 elt = elt->prev;
554 }
555 if (elt == NULL) {
556 iamhere
557 ("Not far enough into tape to start deleting old archives from collection.");
558 return (0);
559 }
560
561 elt = elt->prev;
562 i = 0;
563 while ((elt != NULL) && (i < 10)) {
564 te = (struct s_tapecat_entry *)elt->data;
565 mr_asprintf(&old_fname, "%s/%s", tmpdir, te->fname);
566 unlink(old_fname);
567 mr_free(old_fname);
568 elt = elt->prev;
569 i++;
570 }
571 mr_free(tmpdir);
572 return (0);
573}
574
575
576/**
577 * Open the CD stream for input.
578 * @param bkpinfo The backup information structure. Passed to openin_tape().
579 * @return 0 for success, nonzero for failure.
580 * @note Equivalent to openin_tape() for now, but don't count on this behavior.
581 */
582int openin_cdstream(struct s_bkpinfo *bkpinfo)
583{
584 return (openin_tape(bkpinfo));
585}
586
587
588int set_tape_block_size_with_mt(char *tapedev,
589 long internal_tape_block_size)
590{
591 char *tmp;
592 int res;
593
594 if (strncmp(tapedev, "/dev/", 5)) {
595 mr_msg(1,
596 "Not using 'mt setblk'. This isn't an actual /dev entry.");
597 return (0);
598 }
599 mr_asprintf(&tmp, "mt -f %s setblk %ld", tapedev,
600 internal_tape_block_size);
601 res = run_program_and_log_output(tmp, 3);
602 mr_free(tmp);
603 return (res);
604}
605
606
607/**
608 * Open the tape device for input.
609 * @param bkpinfo The backup information structure. Fields used:
610 * - @c bkpinfo->media_device
611 * - @c bkpinfo->tmpdir
612 * @return 0 for success, nonzero for failure.
613 * @note This will also work with a cdstream for now, but don't count on this behavior.
614 */
615int openin_tape(struct s_bkpinfo *bkpinfo)
616{
617 /*@ buffer ***************************************************** */
618 char fname[MAX_STR_LEN];
619 char *datablock = NULL;
620 char *tmp = NULL;
621 char old_cwd[MAX_STR_LEN];
622 char *outfname = NULL;
623 /*@ int ******************************************************* */
624 int i;
625 int j;
626 int res;
627 long length, templong;
628 size_t k;
629 int retval = 0;
630 int ctrl_chr;
631
632 /*@ long long ************************************************* */
633 long long size;
634
635 /*@ pointers ************************************************** */
636 FILE *fout;
637
638 /*@ end vars *************************************************** */
639
640 assert_string_is_neither_NULL_nor_zerolength(bkpinfo->media_device);
641 mr_list_alloc(tapecatalog);
642 g_tape_posK = 0;
643 if (g_tape_stream) {
644 log_it("FYI - I won't 'openin' the tape. It's already open.");
645 return (0);
646 }
647 insist_on_this_tape_number(1);
648 mr_asprintf(&outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
649 make_hole_for_file(outfname);
650
651 set_tape_block_size_with_mt(bkpinfo->media_device,
652 bkpinfo->internal_tape_block_size);
653
654 log_it("Opening IN tape");
655 if (!
656 (g_tape_stream =
657 open_device_via_buffer(bkpinfo->media_device, 'r',
658 bkpinfo->internal_tape_block_size))) {
659 log_to_screen(_("Cannot openin stream device"));
660 return (1);
661 }
662 log_to_screen(_("Reading stream"));
663 log_it("stream device = '%s'", bkpinfo->media_device);
664 /* skip data disks */
665 open_evalcall_form("Skipping data disks on stream");
666 log_to_screen(_("Skipping data disks on stream"));
667 if (!(fout = fopen(outfname, "w"))) {
668 log_OS_error(outfname);
669 log_to_screen(_("Cannot openout datadisk all.tar.gz file"));
670 return (-1);
671 }
672 datablock = (char *) mr_malloc(256 * 1024);
673 for (i = 0; i < 32; i++) {
674 for (j = 0; j < 4; j++) {
675 for (length = 0, k = 0; length < 256 * 1024; length += k) {
676 k = fread(datablock + length, 1, 256 * 1024 - length,
677 g_tape_stream);
678 }
679 (void) fwrite(datablock, 1, (size_t) length, fout);
680 g_tape_posK += length / 1024;
681 }
682 if (i > 8) // otherwise, 'buffer' distorts calculations
683 {
684 templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
685 update_evalcall_form((int) (templong));
686 }
687 }
688 paranoid_fclose(fout);
689 mr_free(datablock);
690 /* find initial blocks */
691 res = read_header_block_from_stream(&size, fname, &ctrl_chr);
692 retval += res;
693 if (ctrl_chr != BLK_START_OF_TAPE) {
694 wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
695 }
696 res = read_header_block_from_stream(&size, fname, &ctrl_chr);
697 retval += res;
698 if (ctrl_chr != BLK_START_OF_BACKUP) {
699 wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
700 }
701 close_evalcall_form();
702 log_it("Saved all.tar.gz to '%s'", outfname);
703 (void) getcwd(old_cwd, MAX_STR_LEN);
704 chdir(bkpinfo->tmpdir);
705 mr_asprintf(&tmp, "tar -zxf %s tmp/mondo-restore.cfg 2> /dev/null",
706 outfname);
707 paranoid_system(tmp);
708 mr_free(tmp);
709 paranoid_system("cp -f tmp/mondo-restore.cfg . 2> /dev/null");
710 chdir(old_cwd);
711 unlink(outfname);
712 mr_free(outfname);
713 return (retval);
714}
715
716
717/**
718 * Start writing to a CD stream.
719 * @param cddev The CD device to openout via cdrecord.
720 * @param speed The speed to write at.
721 * @return 0 for success, nonzero for failure.
722 * @note This should be called only from backup processes.
723 */
724int openout_cdstream(char *cddev, int speed)
725{
726 /*@ buffers ***************************************************** */
727 char *command = NULL;
728
729 /*@ end vars *************************************************** */
730
731 /* add 'dummy' if testing */
732 mr_asprintf(&command,
733 "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
734 cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
735 /* initialise the catalog */
736 g_current_media_number = 1;
737 mr_list_alloc(tapecatalog);
738 /* log stuff */
739 log_it("Opening OUT cdstream with the command");
740 log_it(command);
741 /* log_it("Let's see what happens, shall we?"); */
742 g_tape_stream = popen(command, "w");
743 mr_free(command);
744 if (g_tape_stream) {
745 return (0);
746 } else {
747 log_to_screen(_("Failed to openout to cdstream (fifo)"));
748 return (1);
749 }
750}
751
752
753/**
754 * Start writing to a tape device for the backup.
755 * @param tapedev The tape device to open for writing.
756 * @return 0 for success, nonzero for failure.
757 * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
758 * EXISTING DATA on the tape!
759 */
760int openout_tape(char *tapedev, long internal_tape_block_size)
761{
762 g_current_media_number = 1;
763 if (g_tape_stream) {
764 log_it("FYI - I won't 'openout' the tape. It's already open.");
765 return (0);
766 }
767 mr_list_alloc(tapecatalog);
768 g_tape_posK = 0;
769
770 set_tape_block_size_with_mt(tapedev, internal_tape_block_size);
771 log_it("Opening OUT tape");
772 if (!
773 (g_tape_stream =
774 open_device_via_buffer(tapedev, 'w', internal_tape_block_size))) {
775 log_to_screen(_("Cannot openin stream device"));
776 return (1);
777 }
778 return (0);
779}
780
781
782/**
783 * Copy a file from the opened stream (CD or tape) to @p outfile.
784 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
785 * @param outfile The file to write to.
786 * @param size The size of the file in the input stream.
787 * @return 0 for success, nonzero for failure.
788 */
789int
790read_file_from_stream_to_file(struct s_bkpinfo *bkpinfo, char *outfile,
791 long long size)
792{
793
794 /*@ int ******************************************************** */
795 int res;
796
797 /*@ end vars *************************************************** */
798
799 res = read_file_from_stream_FULL(bkpinfo, outfile, NULL, size);
800
801 return (res);
802}
803
804
805/**
806 * Copy a file from the currently opened stream (CD or tape) to the stream indicated
807 * by @p fout.
808 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
809 * @param fout The stream to write the file to.
810 * @param size The size of the file in bytes.
811 * @return 0 for success, nonzero for failure.
812 */
813int
814read_file_from_stream_to_stream(struct s_bkpinfo *bkpinfo, FILE * fout,
815 long long size)
816{
817
818 /*@ int ******************************************************** */
819 int res;
820
821 /*@ end vars *************************************************** */
822
823 res = read_file_from_stream_FULL(bkpinfo, NULL, fout, size);
824 return (res);
825}
826
827
828/**
829 * Copy a file from the currently opened stream (CD or tape) to either a
830 * @c FILE pointer indicating a currently-opened file, or a filename indicating
831 * a new file to create. This is the backbone function that read_file_from_stream_to_file()
832 * and read_file_from_stream_to_stream() are wrappers for.
833 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
834 * @param outfname If non-NULL, write to this file.
835 * @param foutstream If non-NULL, write to this stream.
836 * @param orig_size The original length of the file in bytes.
837 * @return 0 for success, nonzero for failure.
838 * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
839 */
840int
841read_file_from_stream_FULL(struct s_bkpinfo *bkpinfo, char *outfname,
842 FILE * foutstream, long long orig_size)
843{
844 /*@ buffers ***************************************************** */
845 char *tmp = NULL;
846 char *datablock = NULL;
847 char *temp_fname;
848 char *temp_cksum;
849 char *actual_cksum = NULL;
850
851 /*@ int ********************************************************* */
852 int retval = 0;
853#ifdef EXTRA_TAPE_CHECKSUMS
854 int i, ch;
855#endif
856 int noof_blocks;
857 int ctrl_chr;
858 int res;
859 /*@ pointers **************************************************** */
860 FILE *fout;
861
862 /*@ long ***************************************************** */
863 long bytes_to_write = 0;
864
865 /*@ long long *************************************************** */
866 long long temp_size, size;
867 long bytes_read, bytes_to_read;
868 long long total_read_from_tape_for_this_file = 0;
869 long long where_I_was_before_tape_change = 0;
870 /*@ unsigned int ************************************************ */
871 unsigned int crc16;
872 unsigned int crctt;
873
874 bool had_to_resync = FALSE;
875
876 /*@ init ******************************************************* */
877 malloc_string(temp_fname);
878 malloc_string(temp_cksum);
879 datablock = mr_malloc(TAPE_BLOCK_SIZE);
880 crc16 = 0;
881 crctt = 0;
882 size = orig_size;
883
884 /*@ end vars *************************************************** */
885
886 res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
887 if (orig_size != temp_size && orig_size != -1) {
888 mr_asprintf(&tmp,
889 "output file's size should be %ld K but is apparently %ld K",
890 (long) size >> 10, (long) temp_size >> 10);
891 log_to_screen(tmp);
892 mr_free(tmp);
893 }
894 if (ctrl_chr != BLK_START_FILE) {
895 wrong_marker(BLK_START_FILE, ctrl_chr);
896 return (1);
897 }
898 mr_asprintf(&tmp, "Reading file from tape; writing to '%s'; %ld KB",
899 outfname, (long) size >> 10);
900 log_to_screen(tmp);
901 mr_free(tmp);
902
903 if (foutstream) {
904 fout = foutstream;
905 } else {
906 fout = fopen(outfname, "w");
907 }
908 if (!fout) {
909 log_OS_error(outfname);
910 log_to_screen(_("Cannot openout file"));
911 return (1);
912 }
913 total_read_from_tape_for_this_file = 0;
914 for (noof_blocks = 0; size > 0;
915 noof_blocks++, size -=
916 bytes_to_write, total_read_from_tape_for_this_file +=
917 bytes_read) {
918 bytes_to_write =
919 (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
920 bytes_to_read = TAPE_BLOCK_SIZE;
921 bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
922 while (bytes_read < bytes_to_read) { // next tape!
923// crctt=crc16=0;
924 where_I_was_before_tape_change = size;
925 mr_msg(4, "where_I_was_... = %lld",
926 where_I_was_before_tape_change);
927 start_to_read_from_next_tape(bkpinfo);
928 mr_msg(4, "Started reading from next tape.");
929 skip_incoming_files_until_we_find_this_one(temp_fname);
930 mr_msg(4, "Skipped irrelevant files OK.");
931 for (size = orig_size; size > where_I_was_before_tape_change;
932 size -= bytes_to_write) {
933 bytes_read =
934 fread(datablock, 1, bytes_to_read, g_tape_stream);
935 }
936 mr_msg(4, "'size' is now %lld (should be %lld)", size,
937 where_I_was_before_tape_change);
938 log_to_screen("Successfully re-sync'd tape");
939 had_to_resync = TRUE;
940 bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
941 }
942
943 (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
944
945#ifdef EXTRA_TAPE_CHECKSUMS
946 for (i = 0; i < (int) bytes_to_write; i++) {
947 ch = datablock[i];
948 crc16 = updcrcr(crc16, (unsigned) ch);
949 crctt = updcrc(crctt, (unsigned) ch);
950 }
951#endif
952 }
953 mr_msg(6, "Total read from tape for this file = %lld",
954 total_read_from_tape_for_this_file);
955 mr_msg(6, ".......................... Should be %lld", orig_size);
956 g_tape_posK += total_read_from_tape_for_this_file / 1024;
957 mr_asprintf(&actual_cksum, "%04x%04x", crc16, crctt);
958 if (foutstream) { /*log_it("Finished writing to foutstream"); */
959 } else {
960 paranoid_fclose(fout);
961 }
962 res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
963 if (ctrl_chr != BLK_STOP_FILE) {
964 wrong_marker(BLK_STOP_FILE, ctrl_chr);
965// fatal_error("Bad marker"); // return(1);
966 }
967 if (strcmp(temp_cksum, actual_cksum)) {
968 mr_asprintf(&tmp, _("actual cksum=%s; recorded cksum=%s"), actual_cksum,
969 temp_cksum);
970 log_to_screen(tmp);
971 mr_free(tmp);
972
973 mr_asprintf(&tmp, _("%s (%ld K) is corrupt on tape"), temp_fname,
974 (long) orig_size >> 10);
975 log_to_screen(tmp);
976 mr_free(tmp);
977 retval++;
978 }
979 mr_free(actual_cksum);
980 mr_free(datablock);
981 mr_free(temp_fname);
982 mr_free(temp_cksum);
983 return (retval);
984}
985
986
987/**
988 * Read a header block from the currently opened stream (CD or tape).
989 * This block indicates the length of the following file (if it's file-related)
990 * the filename (if it's file-related), and the block type.
991 * @param plen Where to put the length of the file. Valid only for file-related header blocks.
992 * @param filename Where to put the name of the file. Valid only for file-related header blocks.
993 * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
994 * @return 0 for success, nonzero for failure.
995 * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
996 */
997int
998read_header_block_from_stream(long long *plen, char *filename,
999 int *pcontrol_char)
1000{
1001
1002 /*@ buffers ***************************************************** */
1003 char *tempblock;
1004
1005 /*@ int ********************************************************* */
1006 int i, retval;
1007
1008 /*@ end vars *************************************************** */
1009
1010 tempblock = (char *) mr_malloc((size_t) TAPE_BLOCK_SIZE);
1011
1012 for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
1013 tempblock[i] = 0;
1014 }
1015 while (!(*pcontrol_char = tempblock[7000])) {
1016 g_tape_posK +=
1017 fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
1018 g_tape_stream) / 1024;
1019 }
1020 memcpy((char *) plen, tempblock + 7001, sizeof(long long));
1021 if (strcmp(tempblock + 6000 + *pcontrol_char, "Mondolicious, baby")) {
1022 log_it("Bad header block at %ld K", (long) g_tape_posK);
1023 }
1024 strcpy(filename, tempblock + 1000);
1025 if (*pcontrol_char == BLK_ABORTED_BACKUP) {
1026 log_to_screen("I can't verify an aborted backup.");
1027 retval = 1;
1028 } else {
1029 retval = 0;
1030 }
1031 for (i = 1000; i < 1020; i++) {
1032 if (tempblock[i] < 32 || tempblock[i] > 126) {
1033 tempblock[i] = ' ';
1034 }
1035 }
1036 tempblock[i] = '\0';
1037 mr_msg(6, "%s (fname=%s, size=%ld K)",
1038 marker_to_string(*pcontrol_char), tempblock + 1000,
1039 (long) (*plen) >> 10);
1040 mr_free(tempblock);
1041 return (retval);
1042}
1043
1044
1045/**
1046 * Add specified file/slice to the internal catalog of all archives written.
1047 * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
1048 * write the last [buffer size] MB from the catalog to the new tape, so we know
1049 * we have @e all archives on some CD/tape/whatever.
1050 * @param type The type of file we're cataloging (afioball, slice, something else)
1051 * @param number The fileset number or biggiefile number.
1052 * @param aux The slice number if it's a biggiefile, or any other additional info.
1053 * @param fn The original full pathname of the file we're recording.
1054 * @return The index of the record we just added.
1055 */
1056int register_in_tape_catalog(t_archtype type, int number, long aux,
1057 char *fn)
1058{
1059 char *fname = NULL;
1060 char *p = NULL;
1061 struct s_tapecat_entry *te = NULL;
1062 struct mr_list_elt *elt = NULL;
1063
1064 p = strrchr(fn, '/');
1065 if (p) {
1066 p++;
1067 } else {
1068 p = fn;
1069 }
1070 mr_asprintf(&fname, p);
1071
1072 te = (struct s_tapecat_entry *)mr_malloc(sizeof(struct s_tapecat_entry));
1073 te->type = type;
1074 te->number = number;
1075 te->aux = aux;
1076 te->tape_posK = g_tape_posK;
1077 /* BERLIOS: Check if this is written womewhere, as it's only a pointer */
1078 /* BERLIOS: Verify to purge fname correctly */
1079 te->fname = fname;
1080
1081 /* place the data in a list elt */
1082 mr_list_alloc_elt(elt, (void *)te, mr_free_te);
1083 mr_list_add_elt_last(tapecatalog, elt);
1084
1085 // returns the index of the record we've just added
1086 return (mr_list_length(tapecatalog));
1087}
1088
1089
1090/**
1091 * Decide whether we should start a new tape. This is TRUE if we've run out of tape
1092 * (got SIGPIPE) or look like we will.
1093 * @param mediasize The size of the tape in megabytes.
1094 * @param length_of_incoming_file The length of the file we're about to write, in bytes.
1095 * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
1096 * autodetecting the size. Huh?
1097 */
1098
1099/* BERLIOS: Should be reviewed for mediasize being a off_t ??? */
1100bool
1101should_we_write_to_next_tape(long mediasize,
1102 off_t length_of_incoming_file)
1103{
1104 /*@ bool's ***************************************************** */
1105 bool we_need_a_new_tape = FALSE;
1106
1107 /*@ end vars *************************************************** */
1108
1109 if (mediasize == 0) {
1110 return (FALSE);
1111 }
1112 if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
1113 log_it("mediasize = %ld", mediasize);
1114 we_need_a_new_tape = TRUE;
1115 log_to_screen(_("Should have started a new tape/CD already"));
1116 }
1117 if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
1118 mediasize - (SLICE_SIZE * 4 / 1024)) {
1119 log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
1120 mediasize);
1121 we_need_a_new_tape = TRUE;
1122 }
1123 return (we_need_a_new_tape);
1124}
1125
1126
1127/**
1128 * Seek through the stream until we find a header block where the NAME field matches
1129 * @p the_file_I_was_reading. This is useful if you've just started reading from
1130 * a new tape and want to find the file you were reading when the tape ended.
1131 * @param the_file_I_was_reading File name to look for.
1132 * @return 0 for success, nonzero for failure.
1133 */
1134int skip_incoming_files_until_we_find_this_one(char
1135 *the_file_I_was_reading)
1136{
1137 char *pA;
1138 char *pB;
1139 int res;
1140 int ctrl_chr;
1141 char *temp_fname;
1142 char *datablock;
1143 long long temp_size, size;
1144 long bytes_to_write;
1145
1146 datablock = mr_malloc(TAPE_BLOCK_SIZE);
1147 malloc_string(temp_fname);
1148 pB = strrchr(the_file_I_was_reading, '/');
1149 if (pB) {
1150 pB++;
1151 } else {
1152 pB = the_file_I_was_reading;
1153 }
1154 mr_msg(1, "skip_incoming_..(%s)", pB);
1155 mr_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
1156 ctrl_chr = -1;
1157 while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
1158 res =
1159 read_header_block_from_stream(&temp_size, temp_fname,
1160 &ctrl_chr);
1161 if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
1162 break;
1163 }
1164 mr_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
1165 wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
1166 mr_msg(3, "Still trying to re-sync w/ tape");
1167 }
1168 while (ctrl_chr != BLK_START_FILE) {
1169 res =
1170 read_header_block_from_stream(&temp_size, temp_fname,
1171 &ctrl_chr);
1172 if (ctrl_chr == BLK_START_FILE) {
1173 break;
1174 }
1175 mr_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
1176 wrong_marker(BLK_START_FILE, ctrl_chr);
1177 mr_msg(3, "Still trying to re-sync w/ tape");
1178 }
1179 pA = strrchr(temp_fname, '/');
1180 if (pA) {
1181 pA++;
1182 } else {
1183 pA = temp_fname;
1184 }
1185 pB = strrchr(the_file_I_was_reading, '/');
1186 if (pB) {
1187 pB++;
1188 } else {
1189 pB = the_file_I_was_reading;
1190 }
1191 while (strcmp(pA, pB)) {
1192 mr_msg(6, "Skipping %s (it's not %s)", temp_fname,
1193 the_file_I_was_reading);
1194 for (size = temp_size; size > 0; size -= bytes_to_write) {
1195 bytes_to_write =
1196 (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
1197 // FIXME - needs error-checking and -catching
1198 fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream);
1199 }
1200 res =
1201 read_header_block_from_stream(&temp_size, temp_fname,
1202 &ctrl_chr);
1203 if (ctrl_chr != BLK_STOP_FILE) {
1204 wrong_marker(BLK_STOP_FILE, ctrl_chr);
1205 }
1206 res =
1207 read_header_block_from_stream(&temp_size, temp_fname,
1208 &ctrl_chr);
1209 if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
1210 wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
1211 }
1212 res =
1213 read_header_block_from_stream(&temp_size, temp_fname,
1214 &ctrl_chr);
1215 if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
1216 wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
1217 }
1218 res =
1219 read_header_block_from_stream(&temp_size, temp_fname,
1220 &ctrl_chr);
1221 if (ctrl_chr != BLK_START_FILE) {
1222 wrong_marker(BLK_START_FILE, ctrl_chr);
1223 }
1224 pA = strrchr(temp_fname, '/');
1225 if (pA) {
1226 pA++;
1227 } else {
1228 pA = temp_fname;
1229 }
1230 pB = strrchr(the_file_I_was_reading, '/');
1231 if (pB) {
1232 pB++;
1233 } else {
1234 pB = the_file_I_was_reading;
1235 }
1236 }
1237 mr_msg(2, "Reading %s (it matches %s)", temp_fname,
1238 the_file_I_was_reading);
1239 mr_free(temp_fname);
1240 mr_free(datablock);
1241 return (0);
1242}
1243
1244
1245/**
1246 * Start to read from the next tape. Assumes the user has already inserted it.
1247 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
1248 * @return 0 for success, nonzero for failure.
1249 */
1250int start_to_read_from_next_tape(struct s_bkpinfo *bkpinfo)
1251{
1252 /*@ int ********************************************************* */
1253 int res = 0;
1254 char *sz_msg;
1255 int ctrlchr;
1256 long long temp_size;
1257 malloc_string(sz_msg);
1258 /*@ end vars *************************************************** */
1259
1260 paranoid_pclose(g_tape_stream);
1261 sync();
1262 sync();
1263 sync();
1264 log_it("Next tape requested.");
1265 insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
1266 log_it("Opening IN the next tape");
1267 if (!
1268 (g_tape_stream =
1269 open_device_via_buffer(bkpinfo->media_device, 'r',
1270 bkpinfo->internal_tape_block_size))) {
1271 log_to_screen(_("Cannot openin stream device"));
1272 return (1);
1273 }
1274 g_tape_posK = 0;
1275 g_sigpipe = FALSE;
1276 res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
1277 if (ctrlchr != BLK_START_OF_TAPE) {
1278 wrong_marker(BLK_START_OF_TAPE, ctrlchr);
1279 }
1280 res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
1281 if (ctrlchr != BLK_START_OF_BACKUP) {
1282 wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
1283 } else {
1284 mr_msg(3, "Next tape opened OK. Whoopee!");
1285 }
1286 mr_free(sz_msg);
1287 return (res);
1288}
1289
1290
1291/**
1292 * Start to write to the next tape. Assume the user has already inserted it.
1293 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
1294 * @return 0 for success, nonzero for failure.
1295 */
1296int start_to_write_to_next_tape(struct s_bkpinfo *bkpinfo)
1297{
1298 int res = 0;
1299 char *command = NULL;
1300
1301 paranoid_pclose(g_tape_stream);
1302 sync();
1303 sync();
1304 sync();
1305 log_it("New tape requested.");
1306 insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
1307 if (bkpinfo->backup_media_type == cdstream) {
1308 mr_asprintf(&command,
1309 "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
1310 bkpinfo->media_device, bkpinfo->cdrw_speed, MONDO_LOGFILE,
1311 MONDO_LOGFILE);
1312 log_it("Opening OUT to next CD with the command");
1313 log_it(command);
1314 log_it("Let's see what happens, shall we?");
1315 g_tape_stream = popen(command, "w");
1316 mr_free(command);
1317 if (!g_tape_stream) {
1318 log_to_screen(_("Failed to openout to cdstream (fifo)"));
1319 return (1);
1320 }
1321 } else {
1322 log_it("Opening OUT to next tape");
1323 if (!
1324 (g_tape_stream =
1325 open_device_via_buffer(bkpinfo->media_device, 'w',
1326 bkpinfo->internal_tape_block_size))) {
1327 log_to_screen(_("Cannot openin stream device"));
1328 return (1);
1329 }
1330 }
1331 g_tape_posK = 0;
1332 g_sigpipe = FALSE;
1333 res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
1334 res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
1335 return (res);
1336}
1337
1338
1339/**
1340 * Write a bufferfull of the most recent archives to the tape. The
1341 * rationale behind this is a bit complex. If the previous tape ended
1342 * suddenly (EOF or otherwise) some archives were probably left in the
1343 * buffer. That means that Mondo thinks they have been written, but
1344 * the external binary @c buffer has not actually written them. So to
1345 * be safe, we start the new tape by writing the last bufferfull from
1346 * the old one. This insures that all archives will be on at least
1347 * one tape. Sounds inelegant, but it works.
1348 * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
1349 * @return 0 for success, nonzero for failure.
1350 */
1351int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo)
1352{
1353 int i, last, res = 0;
1354 char *fname = NULL;
1355 struct mr_list_elt *elt = NULL;
1356 struct s_tapecat_entry *te = NULL;
1357
1358 mr_msg(2, "I am now writing back catalog to tape");
1359 elt = tapecatalog->first;
1360 while (elt != NULL) {
1361 te = (struct s_tapecat_entry *) elt->data;
1362 mr_asprintf(&fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, te->fname);
1363 if (!does_file_exist(fname)) {
1364 mr_msg(6, "Can't write %s - it doesn't exist.", fname);
1365 } else {
1366 write_header_block_to_stream(length_of_file(fname),
1367 "start-backcatalog-afio-or-slice",
1368 BLK_START_AN_AFIO_OR_SLICE);
1369 mr_msg(2, "Writing %s", fname);
1370 if (write_file_to_stream_from_file(bkpinfo, fname)) {
1371 res++;
1372 mr_msg(2, "%s failed", fname);
1373 }
1374 if (i != last) {
1375 write_header_block_to_stream((off_t)0,
1376 "stop-backcatalog-afio-or-slice",
1377 BLK_STOP_AN_AFIO_OR_SLICE);
1378 }
1379 }
1380 mr_free(fname);
1381 elt = elt->next;
1382 }
1383 mr_msg(2, "Finished writing back catalog to tape");
1384 return (res);
1385}
1386
1387
1388/**
1389 * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
1390 * @param fname The path to all.tar.gz.
1391 * @return 0 for success, nonzero for failure.
1392 */
1393int write_data_disks_to_stream(char *fname)
1394{
1395 /*@ pointers *************************************************** */
1396 FILE *fin = NULL;
1397 char *tmp = NULL;
1398
1399 /*@ long ******************************************************* */
1400 long m = -1;
1401 long templong;
1402
1403 /*@ int ******************************************************** */
1404 int i, j;
1405
1406 /*@ buffers **************************************************** */
1407 char tempblock[256 * 1024];
1408
1409 /*@ end vars *************************************************** */
1410
1411 open_evalcall_form(_("Writing data disks to tape"));
1412 log_to_screen(_("Writing data disks to tape"));
1413 log_it("Data disks = %s", fname);
1414 if (!does_file_exist(fname)) {
1415 mr_asprintf(&tmp, _("Cannot find %s"), fname);
1416 log_to_screen(tmp);
1417 mr_free(tmp);
1418 return (1);
1419 }
1420 if (!(fin = fopen(fname, "r"))) {
1421 log_OS_error(fname);
1422 fatal_error("Cannot openin the data disk");
1423 }
1424 for (i = 0; i < 32; i++) { /* 32MB */
1425 for (j = 0; j < 4; j++) { /* 256K x 4 = 1MB (1024K) */
1426 if (!feof(fin)) {
1427 m = (long) fread(tempblock, 1, 256 * 1024, fin);
1428 } else {
1429 m = 0;
1430 }
1431 for (; m < 256 * 1024; m++) {
1432 tempblock[m] = '\0';
1433 }
1434 g_tape_posK +=
1435 fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
1436 }
1437 if (i > g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
1438 {
1439 templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
1440 update_evalcall_form((int) (templong));
1441 }
1442 }
1443 paranoid_fclose(fin);
1444 close_evalcall_form();
1445 return (0);
1446}
1447
1448
1449/**
1450 * Copy @p infile to the opened stream (CD or tape).
1451 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
1452 * @param infile The file to write to the stream.
1453 * @return 0 for success, nonzero for failure.
1454 */
1455int write_file_to_stream_from_file(struct s_bkpinfo *bkpinfo, char *infile)
1456{
1457 /*@ buffers **************************************************** */
1458 char *tmp = NULL;
1459 char datablock[TAPE_BLOCK_SIZE];
1460 char *checksum = NULL;
1461 char *infile_basename = NULL;
1462
1463 /*@ int ******************************************************** */
1464 int retval = 0;
1465 int noof_blocks;
1466
1467 /* unsigned int ch; */
1468 unsigned int crc16;
1469 unsigned int crctt;
1470
1471 /*@ pointers *************************************************** */
1472 FILE *fin;
1473 char *p;
1474
1475 /*@ long ******************************************************* */
1476 long bytes_to_read = 0;
1477 long i;
1478
1479 off_t filesize;
1480
1481#ifdef EXTRA_TAPE_CHECKSUMS
1482 int ch;
1483#endif
1484
1485 /*@ initialize ************************************************ */
1486 crc16 = 0;
1487 crctt = 0;
1488
1489 /*@ end vars *************************************************** */
1490
1491 infile_basename = strrchr(infile, '/');
1492 if (infile_basename) {
1493 infile_basename++;
1494 } else {
1495 infile_basename = infile;
1496 }
1497 filesize = length_of_file(infile);
1498 if (should_we_write_to_next_tape
1499 (bkpinfo->media_size, filesize)) {
1500 start_to_write_to_next_tape(bkpinfo);
1501 write_backcatalog_to_tape(bkpinfo);
1502 }
1503 p = strrchr(infile, '/');
1504 if (!p) {
1505 p = infile;
1506 } else {
1507 p++;
1508 }
1509 mr_asprintf(&tmp, "Writing file '%s' to tape (%ld KB)", p,
1510 (long) filesize >> 10);
1511 log_it(tmp);
1512 mr_free(tmp);
1513
1514 write_header_block_to_stream(filesize, infile_basename,
1515 BLK_START_FILE);
1516//go_here_to_restart_saving_of_file:
1517 if (!(fin = fopen(infile, "r"))) {
1518 log_OS_error(infile);
1519 return (1);
1520 }
1521 for (noof_blocks = 0; filesize > 0;
1522 noof_blocks++, filesize -= bytes_to_read) {
1523 if (filesize < TAPE_BLOCK_SIZE) {
1524 bytes_to_read = (long) filesize;
1525 for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
1526 datablock[i] = '\0';
1527 }
1528 } else {
1529 bytes_to_read = TAPE_BLOCK_SIZE;
1530 }
1531 (void) fread(datablock, 1, (size_t) bytes_to_read, fin);
1532 g_tape_posK += fwrite(datablock, 1, /*bytes_to_read */
1533 (size_t) TAPE_BLOCK_SIZE,
1534 g_tape_stream) / 1024;
1535 if (g_sigpipe) {
1536 iamhere("Sigpipe occurred recently. I'll start a new tape.");
1537 fclose(fin);
1538 g_sigpipe = FALSE;
1539 start_to_write_to_next_tape(bkpinfo);
1540 write_backcatalog_to_tape(bkpinfo); // kinda-sorta recursive :)
1541 return (0);
1542 }
1543#ifdef EXTRA_TAPE_CHECKSUMS
1544 for (i = 0; i < bytes_to_read; i++) {
1545 ch = datablock[i];
1546 crc16 = updcrcr(crc16, (unsigned) ch);
1547 crctt = updcrc(crctt, (unsigned) ch);
1548 }
1549#endif
1550 }
1551 paranoid_fclose(fin);
1552 mr_asprintf(&checksum, "%04x%04x", crc16, crctt);
1553 /* BERLIOS: what does it do ??? */
1554 write_header_block_to_stream((off_t)g_current_media_number, checksum,
1555 BLK_STOP_FILE);
1556 mr_free(checksum);
1557// log_it("File '%s' written to tape.", infile);
1558 return (retval);
1559}
1560
1561
1562/**
1563 * Write a header block to the opened stream (CD or tape).
1564 * @param length_of_incoming_file The length to store in the header block.
1565 * Usually matters only if this is a file-related header, in which case it should
1566 * be the length of the file that will follow.
1567 * @param filename The filename to store in the header block. Usually matters
1568 * only if this is a file-related header, in which case this should be the name
1569 * if the file that will follow.
1570 * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
1571 * @return 0 for success, nonzero for failure.
1572 */
1573int
1574write_header_block_to_stream(off_t length_of_incoming_file,
1575 char *filename, int control_char)
1576{
1577 /*@ buffers **************************************************** */
1578 char tempblock[TAPE_BLOCK_SIZE];
1579 char *p;
1580
1581 /*@ int ******************************************************** */
1582 int i;
1583
1584 off_t olen;
1585
1586 /*@ end vars *************************************************** */
1587
1588
1589 olen = length_of_incoming_file;
1590 p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
1591 if (!p) {
1592 p = filename;
1593 } else {
1594 p++;
1595 }
1596 if (!g_tape_stream) {
1597 log_to_screen
1598 (_("You're not backing up to tape. Why write a tape header?"));
1599 return (1);
1600 }
1601 for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
1602 tempblock[i] = 0;
1603 }
1604 sprintf(tempblock + 6000 + control_char, "Mondolicious, baby");
1605 tempblock[7000] = control_char;
1606 memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
1607 strcpy(tempblock + 1000, filename);
1608 g_tape_posK +=
1609 fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
1610 g_tape_stream) / 1024;
1611 mr_msg(6, "%s (fname=%s, size=%ld K)",
1612 marker_to_string(control_char), p,
1613 (long) length_of_incoming_file >> 10);
1614 return (0);
1615}
1616
1617
1618/**
1619 * Log (to screen) an erroneous marker, along with what it should have been.
1620 * @param should_be What we were expecting.
1621 * @param it_is What we got.
1622 */
1623void wrong_marker(int should_be, int it_is)
1624{
1625 /*@ buffer ***************************************************** */
1626 char *tmp = NULL;
1627
1628
1629 /*@ end vars *************************************************** */
1630 mr_asprintf(&tmp, _("Wrong marker! (Should be %s, is actually %s)"),
1631 marker_to_string(should_be), marker_to_string(it_is));
1632 log_to_screen(tmp);
1633 mr_free(tmp);
1634}
1635
1636/* @} - end of streamGroup */
Note: See TracBrowser for help on using the repository browser.