source: branches/stable/mondo/src/common/libmondo-stream.c @ 1548

Last change on this file since 1548 was 1548, checked in by bruno, 12 years ago
  • Add the possibiilty to edit in interactive mode mtab and device.map for grub
  • Remove blkid cache files after restore to avoid problems in cloning mode
  • Fix what seems to appear a huge number of bugs in hack-fstab (illustration of 1 LOC = 1 bug :-)
  • Especially improve LABEL and UUID support.
  • Should fix #185
  • Exclude_path should be 4*MAX_STR_LEN everywhere. Fixed now.
  • Increasing that value will allow to having larger exclude paths.
  • Should solve bug #137 (and maybe #3 as well)
  • Adds support for fedora 7

(merge -r 1533:1547 $SVN_M/branches/2.2.5)

  • Property svn:keywords set to Id
File size: 46.4 KB
Line 
1/* $Id: libmondo-stream.c 1548 2007-07-23 23:39:36Z 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#include "mr_gettext.h"
19
20#include "mondostructures.h"
21#include "libmondo-devices.h"
22#include "libmondo-stream.h"
23#include "libmondo-string-EXT.h"
24#include "libmondo-files-EXT.h"
25#include "newt-specific-EXT.h"
26#include "libmondo-fork-EXT.h"
27#include "libmondo-tools-EXT.h"
28#include "libmondo-fifo-EXT.h"
29
30#define EXTRA_TAPE_CHECKSUMS
31
32/*@unused@*/
33//static char cvsid[] = "$Id: libmondo-stream.c 1548 2007-07-23 23:39:36Z bruno $";
34extern bool g_sigpipe;
35extern int g_tape_buffer_size_MB;
36
37extern char *g_getfacl;
38extern char *g_getfattr;
39extern char *MONDO_LOGFILE;
40
41/**
42 * @addtogroup globalGroup
43 * @{
44 */
45/**
46 * The file pointer for the opened tape/CD stream.
47 * Opened and closed by openin_tape(), openin_cdstream(),
48 * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
49 * closeout_tape(), and closeout_cdstream().
50 */
51FILE *g_tape_stream = NULL;
52
53
54/**
55 * The position (in kilobytes) where we are on the tape.
56 */
57long long g_tape_posK = 0;
58
59/**
60 * The current media number we're using. This value is 1-based.
61 */
62int g_current_media_number = -1;
63
64/**
65 * An entry in the tape catalog.
66 */
67struct s_tapecat_entry {
68    /**
69     * The type of archive it is (afioball, slice, or something else).
70     */
71    t_archtype type;
72
73    /**
74     * The filelist number or biggiefile (not slice!) number.
75     */
76    int number;
77
78    /**
79     * The slice number if it's a biggiefile.
80     */
81    long aux;
82
83    /**
84     * The tape position at the point this entry was added.
85     */
86    long long tape_posK;
87
88    /**
89     * The filename of the file cataloged here.
90     */
91    char *fname;
92};
93
94
95/*
96 * The tape catalog that keeps track of files written to tape.
97 * made of a list of @p s_tapecat_entry.
98 * */
99static struct mr_list *tapecatalog;
100
101/* function to free the fname field allocated in te */
102static void mr_free_te(void *data) {
103   
104    struct s_tapecat_entry *te = NULL;
105
106    te = (struct s_tapecat_entry *)data;
107    mr_free(te->fname);
108}
109
110/* @} - end of globalGroup */
111
112int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo);
113
114
115/**
116 * @addtogroup streamGroup
117 * @{
118 */
119/**
120 * Close the global output file descriptor which Mondo has used to read
121 * from the CD stream.
122 * @param bkpinfo The backup information structure. Passed directly to closein_tape().
123 * @return 0 for success, nonzero for failure.
124 * @note This should be called by restore processes only.
125 */
126int closein_cdstream(struct s_bkpinfo *bkpinfo)
127{
128    return (closein_tape(bkpinfo));
129}
130
131
132/**
133 * Close the global output file descriptor which Mondo has used to read
134 * from buffer or dd, which read from the tape.
135 * @param bkpinfo The backup information structure. Unused.
136 * @return 0 for success, nonzero for failure.
137 * @note This should be called by restore processes only.
138 * @note This function also works for cdstreams for now, but don't count on this behavior.
139 * @bug @p bkpinfo parameter is unused.
140 */
141int closein_tape(struct s_bkpinfo *bkpinfo)
142{
143    /*@ int's ******************************************************* */
144    int retval = 0;
145    int res = 0;
146    int ctrl_chr = '\0';
147
148    /*@ buffers ***************************************************** */
149    char fname[MAX_STR_LEN];
150
151    /*@ long long's ************************************************* */
152    long long size;
153    char *blk;
154    int i;
155
156    blk = (char *) mr_malloc(256 * 1024);
157
158    log_it("closein_tape() -- entering");
159    res = read_header_block_from_stream(&size, fname, &ctrl_chr);
160    retval += res;
161    if (ctrl_chr != BLK_END_OF_BACKUP) {
162        wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
163    }
164    res = read_header_block_from_stream(&size, fname, &ctrl_chr);
165    retval += res;
166    if (ctrl_chr != BLK_END_OF_TAPE) {
167        wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
168    }
169    for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
170        (void) fread(blk, 1, 256 * 1024, g_tape_stream);
171    }
172    sleep(1);
173    sync();
174    sleep(1);
175    paranoid_pclose(g_tape_stream);
176    log_it("closein_tape() -- leaving");
177    if (!bkpinfo->please_dont_eject) {
178        eject_device(bkpinfo->media_device);
179    }
180    mr_free(blk);
181    mr_list_free(tapecatalog);
182    return (retval);
183}
184
185
186
187/**
188 * Close the global output file descriptor which Mondo has been using to write
189 * to the tape device (via buffer or dd).
190 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
191 * @return 0 for success, nonzero for failure.
192 * @note This should be called by backup processes only.
193 */
194int closeout_tape(struct s_bkpinfo *bkpinfo)
195{
196    /*@ int's ******************************************************* */
197    int retval = 0;
198
199    /*@ long long's ************************************************* */
200    int i = 0;
201    char *blk = NULL;
202    struct mr_list_elt *elt = NULL;
203    struct s_tapecat_entry *te = NULL;
204
205    blk = (char *) mr_malloc(256 * 1024);
206
207    sleep(1);
208    sync();
209    sleep(1);
210    log_it("closeout_tape() -- entering");
211    retval +=
212        write_header_block_to_stream((off_t)0, "end-of-backup",
213                                     BLK_END_OF_BACKUP);
214    retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE);   /* just in case */
215    /* write 1MB of crap */
216    for (i = 0; i < 256 * 1024; i++) {
217        blk[i] = (int) (random() & 0xFF);
218    }
219    for (i = 0; i < 4 * 8; i++) {
220        (void) fwrite(blk, 1, 256 * 1024, g_tape_stream);
221        if (should_we_write_to_next_tape
222            (bkpinfo->media_size, (off_t)256 * 1024)) {
223            start_to_write_to_next_tape(bkpinfo);
224        }
225    }
226    sleep(2);
227    paranoid_pclose(g_tape_stream);
228    log_it("closeout_tape() -- leaving");
229    elt = tapecatalog->first;
230    while (elt != NULL) {
231        te = (struct s_tapecat_entry *)elt->data;
232        log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
233               (te->type == fileset) ? "fileset" : "bigslice",
234               te->number, te->aux, te->tape_posK);
235        i++;
236        elt = elt->next;
237    }
238    mr_free(blk);
239    mr_list_free(tapecatalog);
240    return (retval);
241}
242
243
244
245bool mt_says_tape_exists(char *dev)
246{
247    char *command;
248    int res;
249
250    mr_asprintf(&command, "mt -f %s status", dev);
251    res = run_program_and_log_output(command, 1);
252    mr_free(command);
253    if (res) {
254        return (FALSE);
255    } else {
256        return (TRUE);
257    }
258}
259
260
261
262/**
263 * Determine the name and size of the tape device. Tries the SCSI tape for
264 * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
265 * @param dev Where to put the found tape device.
266 * @param siz Where to put the tape size (a string like "4GB")
267 * @return 0 if success, nonzero if failure (in which @p dev and @p siz are undefined).
268 */
269int find_tape_device_and_size(char *dev, char *siz)
270{
271    char tmp[MAX_STR_LEN];
272    char *command = NULL;
273    char cdr_exe[MAX_STR_LEN];
274    int res;
275
276    log_to_screen("I am looking for your tape streamer. Please wait.");
277    dev[0] = siz[0] = '\0';
278    if (find_home_of_exe("cdrecord")) {
279        strcpy(cdr_exe, "cdrecord");
280    } else {
281        strcpy(cdr_exe, "dvdrecord");
282    }
283    mr_asprintf(&command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l",
284            cdr_exe);
285    strcpy(tmp, call_program_and_get_last_line_of_output(command));
286    mr_free(command);
287    if (atoi(tmp) != 1) {
288        log_it
289            ("Either too few or too many tape streamers for me to detect...");
290        strcpy(dev, VANILLA_SCSI_TAPE);
291        return 1;
292    }
293    mr_asprintf(&command,
294            "%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",
295            cdr_exe);
296    strcpy(tmp, call_program_and_get_last_line_of_output(command));
297    mr_free(command);
298    if (strlen(tmp) < 2) {
299        log_it("Could not find tape device");
300        return 1;
301    }
302    mr_asprintf(&command,
303            "%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",
304            cdr_exe);
305    strcpy(tmp, call_program_and_get_last_line_of_output(command));
306    mr_free(command);
307
308    strcpy(dev, VANILLA_SCSI_TAPE);
309    dev[strlen(dev) - 1] = '\0';
310    strcat(dev, tmp);           // e.g. '/dev/st0' becomes '/dev/stN'
311    res = 0;
312    if (!mt_says_tape_exists(dev)) {
313        strcpy(dev, ALT_TAPE);
314        if (!mt_says_tape_exists(dev)) {
315            log_it("Cannot openin %s", dev);
316            strcpy(dev, "/dev/st0");
317            if (!mt_says_tape_exists(dev)) {
318                log_it("Cannot openin %s", dev);
319                strcpy(dev, "/dev/osst0");
320                if (!mt_says_tape_exists(dev)) {
321                    res++;
322                } else {
323                    res = 0;
324                }
325            }
326        }
327    }
328
329    log_it("At this point, dev = %s and res = %d", dev, res);
330
331    strcpy(tmp, call_program_and_get_last_line_of_output("\
332cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | \
333grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | \
334awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'"));
335
336    if (mt_says_tape_exists(dev)) {
337        res = 0;
338    } else {
339        log_it("Turning %s", dev);
340        strcpy(tmp, (strrchr(dev, '/') != NULL) ? strrchr(dev, '/') : dev);
341        sprintf(dev, "/dev/os%s", tmp);
342        log_it("...into %s", dev);
343        if (mt_says_tape_exists(dev)) {
344            res = 0;
345        } else {
346            res++;
347        }
348    }
349
350    siz[0] = '\0';
351    log_it("res=%d; dev=%s", res, dev);
352
353    if (res) {
354        return (res);
355    }
356
357    if (strlen(tmp) < 2) {
358        siz[0] = '\0';
359        log_it("Warning - size of tape unknown");
360        return (0);
361    } else {
362        strcpy(siz, tmp);
363        return (0);
364    }
365}
366
367
368int read_EXAT_files_from_tape(struct s_bkpinfo *bkpinfo,
369                              long long *ptmp_size, char *tmp_fname,
370                              int *pctrl_chr, char *xattr_fname,
371                              char *acl_fname)
372{
373    int res = 0;
374    int retval = 0;
375    char *fname = (char *)&res;                 /* Should NOT be NULL */
376
377// xattr
378    if (g_getfattr) {
379        res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
380        if (*pctrl_chr != BLK_START_EXAT_FILE) {
381            wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
382        }
383        if (!strstr(fname, "xattr")) {
384            fatal_error("Wrong order, sunshine.");
385        }
386        read_file_from_stream_to_file(bkpinfo, xattr_fname, *ptmp_size);
387        res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
388        if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
389            wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
390        }
391        mr_msg(1, "Got xattr");
392    }
393    // acl
394    if (g_getfacl) {
395        res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
396        if (!strstr(fname, "acl")) {
397            fatal_error("Wrong order, sunshine.");
398        }
399        if (*pctrl_chr != BLK_START_EXAT_FILE) {
400            wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
401        }
402        read_file_from_stream_to_file(bkpinfo, acl_fname, *ptmp_size);
403        res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
404        if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
405            wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
406        }
407        res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
408        if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
409            wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
410        }
411        mr_msg(1, "Got acl");
412    }
413    // tarball itself
414    res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
415    mr_msg(1, "now looking for afioball");
416    return (retval);
417}
418
419
420int write_EXAT_files_to_tape(struct s_bkpinfo *bkpinfo, char *xattr_fname,
421                             char *acl_fname)
422{
423    int res = 0;
424    if (g_getfattr) {
425    // xattr
426        write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
427                             BLK_START_EXTENDED_ATTRIBUTES);
428        write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
429                             BLK_START_EXAT_FILE);
430        write_file_to_stream_from_file(bkpinfo, xattr_fname);
431        write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
432    }
433    if (g_getfacl) {
434    // acl
435        write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
436                             BLK_START_EXAT_FILE);
437        write_file_to_stream_from_file(bkpinfo, acl_fname);
438        write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
439        write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
440                             BLK_STOP_EXTENDED_ATTRIBUTES);
441    }
442    return (res);
443}
444
445
446
447
448/**
449 * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
450 * @param tapeno The tape number to insist on.
451 * @bug There is currently no way to actually verify that the user has actually
452 * inserted the right tape.
453 */
454void insist_on_this_tape_number(int tapeno)
455{
456    int i;
457    char *tmp = NULL;
458
459    log_it("Insisting on tape #%d", tapeno);
460    if (g_current_media_number != tapeno) {
461        //      log_it("g_current_media_number = %d", g_current_media_number);
462        mr_asprintf(&tmp,
463                 _("When the tape drive goes quiet, please insert volume %d in this series."),
464                 tapeno);
465        popup_and_OK(tmp);
466        mr_free(tmp);
467        open_evalcall_form(_("Waiting while the tape drive settles"));
468    } else {
469        open_evalcall_form(_("Waiting while the tape drive rewinds"));
470    }
471
472    for (i = 0; i <= 100; i += 2) {
473        usleep(100000);
474        update_evalcall_form(i);
475    }
476    close_evalcall_form();
477    log_it("I assume user has inserted it. They _say_ they have...");
478    g_current_media_number = tapeno;
479
480    //  log_it("g_current_media_number = %d", g_current_media_number);
481    log_it("OK, I've finished insisting. On with the revelry.");
482}
483
484
485/**
486 * Debugging aid - log the offset we're at on the tape (reading or writing).
487 */
488void log_tape_pos(void)
489{
490    log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
491           (long) g_tape_posK >> 10);
492}
493
494
495/**
496 * Add a file to a collection of recently archived filesets/slices.
497 * The type is determined by the filename: if it contains ".afio." it is
498 * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
499 * otherwise we generate a fatal_error().
500 * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
501 * @param latest_fname The file to place in the collection.
502 * @return 0, always.
503 * @bug Return value is redundant.
504 * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
505 */
506int maintain_collection_of_recent_archives(char *td, char *latest_fname)
507{
508    long long final_alleged_writeK, final_projected_certain_writeK,
509        final_actually_certain_writeK = 0, cposK, bufsize_K;
510    int last = 0;
511    int i = 0;
512    t_archtype type = other;
513    char *command = NULL;
514    char *tmpdir = NULL;
515    char *old_fname = NULL;
516    struct mr_list_elt *elt = NULL;
517    struct s_tapecat_entry *te = NULL;
518
519    bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
520    if (strstr(latest_fname, ".afio.") || strstr(latest_fname, ".star.")) {
521        type = fileset;
522    } else if (strstr(latest_fname, "slice")) {
523        type = biggieslice;
524    } else {
525        log_it("fname = %s", latest_fname);
526        fatal_error
527            ("Unknown type. Internal error in maintain_collection_of_recent_archives()");
528    }
529
530    mr_asprintf(&tmpdir, "%s/tmpfs/backcatalog", td);
531    mkdir(tmpdir, 0x700);
532    mr_asprintf(&command, "cp -f %s %s", latest_fname, tmpdir);
533    if (run_program_and_log_output(command, 6)) {
534        log_it("Warning - failed to copy %s to backcatalog at %s",
535               latest_fname, tmpdir);
536    }
537    mr_free(command);
538
539    last = mr_list_length(tapecatalog) - 1;
540    if (last <= 0) {
541        iamhere("Too early to start deleting from collection.");
542        return (0);
543    }
544    elt = tapecatalog->last;
545    te = (struct s_tapecat_entry *)elt->data;
546    final_alleged_writeK = te->tape_posK;
547    final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
548    while (elt != NULL) {
549        te = (struct s_tapecat_entry *)elt->data;
550        cposK = te->tape_posK;
551        if (cposK < final_projected_certain_writeK) {
552            final_actually_certain_writeK = cposK;
553            break;
554        }
555        elt = elt->prev;
556    }
557    if (elt == NULL) {
558        iamhere
559            ("Not far enough into tape to start deleting old archives from collection.");
560        return (0);
561    }
562
563    elt = elt->prev;
564    i = 0;
565    while ((elt != NULL) && (i < 10)) {
566        te = (struct s_tapecat_entry *)elt->data;
567        mr_asprintf(&old_fname, "%s/%s", tmpdir, te->fname);
568        unlink(old_fname);
569        mr_free(old_fname);
570        elt = elt->prev;
571        i++;
572    }
573    mr_free(tmpdir);
574    return (0);
575}
576
577
578/**
579 * Open the CD stream for input.
580 * @param bkpinfo The backup information structure. Passed to openin_tape().
581 * @return 0 for success, nonzero for failure.
582 * @note Equivalent to openin_tape() for now, but don't count on this behavior.
583 */
584int openin_cdstream(struct s_bkpinfo *bkpinfo)
585{
586    return (openin_tape(bkpinfo));
587}
588
589
590int set_tape_block_size_with_mt(char *tapedev,
591                                long internal_tape_block_size)
592{
593    char *tmp;
594    int res;
595
596    if (strncmp(tapedev, "/dev/", 5)) {
597        mr_msg(1,
598                "Not using 'mt setblk'. This isn't an actual /dev entry.");
599        return (0);
600    }
601    mr_asprintf(&tmp, "mt -f %s setblk %ld", tapedev,
602             internal_tape_block_size);
603    res = run_program_and_log_output(tmp, 3);
604    mr_free(tmp);
605    return (res);
606}
607
608
609/**
610 * Open the tape device for input.
611 * @param bkpinfo The backup information structure. Fields used:
612 * - @c bkpinfo->media_device
613 * - @c bkpinfo->tmpdir
614 * @return 0 for success, nonzero for failure.
615 * @note This will also work with a cdstream for now, but don't count on this behavior.
616 */
617int openin_tape(struct s_bkpinfo *bkpinfo)
618{
619    /*@ buffer ***************************************************** */
620    char fname[MAX_STR_LEN];
621    char *datablock = NULL;
622    char *tmp = NULL;
623    char old_cwd[MAX_STR_LEN];
624    char *outfname = NULL;
625    /*@ int ******************************************************* */
626    int i;
627    int j;
628    int res;
629    long length, templong;
630    size_t k;
631    int retval = 0;
632    int ctrl_chr;
633
634    /*@ long long ************************************************* */
635    long long size;
636
637    /*@ pointers ************************************************** */
638    FILE *fout;
639
640    /*@ end vars *************************************************** */
641
642    assert_string_is_neither_NULL_nor_zerolength(bkpinfo->media_device);
643    tapecatalog = mr_list_alloc();
644    g_tape_posK = 0;
645    if (g_tape_stream) {
646        log_it("FYI - I won't 'openin' the tape. It's already open.");
647        return (0);
648    }
649    insist_on_this_tape_number(1);
650    mr_asprintf(&outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
651    make_hole_for_file(outfname);
652
653    set_tape_block_size_with_mt(bkpinfo->media_device,
654                                bkpinfo->internal_tape_block_size);
655
656    log_it("Opening IN tape");
657    if (!
658        (g_tape_stream =
659         open_device_via_buffer(bkpinfo->media_device, 'r',
660                                bkpinfo->internal_tape_block_size))) {
661        log_to_screen(_("Cannot openin stream device"));
662        return (1);
663    }
664    log_to_screen(_("Reading stream"));
665    log_it("stream device = '%s'", bkpinfo->media_device);
666    /* skip data disks */
667    open_evalcall_form("Skipping data disks on stream");
668    log_to_screen(_("Skipping data disks on stream"));
669    if (!(fout = fopen(outfname, "w"))) {
670        log_OS_error(outfname);
671        log_to_screen(_("Cannot openout datadisk all.tar.gz file"));
672        return (-1);
673    }
674    datablock = (char *) mr_malloc(256 * 1024);
675    for (i = 0; i < 32; i++) {
676        for (j = 0; j < 4; j++) {
677            for (length = 0, k = 0; length < 256 * 1024; length += k) {
678                k = fread(datablock + length, 1, 256 * 1024 - length,
679                          g_tape_stream);
680            }
681            (void) fwrite(datablock, 1, (size_t) length, fout);
682            g_tape_posK += length / 1024;
683        }
684        if (i > 8)              // otherwise, 'buffer' distorts calculations
685        {
686            templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
687            update_evalcall_form((int) (templong));
688        }
689    }
690    paranoid_fclose(fout);
691    mr_free(datablock);
692    /* find initial blocks */
693    res = read_header_block_from_stream(&size, fname, &ctrl_chr);
694    retval += res;
695    if (ctrl_chr != BLK_START_OF_TAPE) {
696        wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
697    }
698    res = read_header_block_from_stream(&size, fname, &ctrl_chr);
699    retval += res;
700    if (ctrl_chr != BLK_START_OF_BACKUP) {
701        wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
702    }
703    close_evalcall_form();
704    log_it("Saved all.tar.gz to '%s'", outfname);
705    (void) getcwd(old_cwd, MAX_STR_LEN);
706    chdir(bkpinfo->tmpdir);
707    mr_asprintf(&tmp, "tar -zxf %s tmp/mondo-restore.cfg 2> /dev/null",
708             outfname);
709    paranoid_system(tmp);
710    mr_free(tmp);
711    paranoid_system("cp -f tmp/mondo-restore.cfg . 2> /dev/null");
712    chdir(old_cwd);
713    unlink(outfname);
714    mr_free(outfname);
715    return (retval);
716}
717
718
719/**
720 * Start writing to a CD stream.
721 * @param cddev The CD device to openout via cdrecord.
722 * @param speed The speed to write at.
723 * @return 0 for success, nonzero for failure.
724 * @note This should be called only from backup processes.
725 */
726int openout_cdstream(char *cddev, int speed)
727{
728    /*@ buffers ***************************************************** */
729    char *command = NULL;
730
731    /*@ end vars *************************************************** */
732
733    /*  add 'dummy' if testing */
734    mr_asprintf(&command,
735             "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
736             cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
737    /*  initialise the catalog */
738    g_current_media_number = 1;
739    tapecatalog = mr_list_alloc();
740    /* log stuff */
741    log_it("Opening OUT cdstream with the command");
742    log_it(command);
743    /*  log_it("Let's see what happens, shall we?"); */
744    g_tape_stream = popen(command, "w");
745    mr_free(command);
746    if (g_tape_stream) {
747        return (0);
748    } else {
749        log_to_screen(_("Failed to openout to cdstream (fifo)"));
750        return (1);
751    }
752}
753
754
755/**
756 * Start writing to a tape device for the backup.
757 * @param tapedev The tape device to open for writing.
758 * @return 0 for success, nonzero for failure.
759 * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
760 * EXISTING DATA on the tape!
761 */
762int openout_tape(char *tapedev, long internal_tape_block_size)
763{
764    g_current_media_number = 1;
765    if (g_tape_stream) {
766        log_it("FYI - I won't 'openout' the tape. It's already open.");
767        return (0);
768    }
769    tapecatalog = mr_list_alloc();
770    g_tape_posK = 0;
771
772    set_tape_block_size_with_mt(tapedev, internal_tape_block_size);
773    log_it("Opening OUT tape");
774    if (!
775        (g_tape_stream =
776         open_device_via_buffer(tapedev, 'w', internal_tape_block_size))) {
777        log_to_screen(_("Cannot openin stream device"));
778        return (1);
779    }
780    return (0);
781}
782
783
784/**
785 * Copy a file from the opened stream (CD or tape) to @p outfile.
786 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
787 * @param outfile The file to write to.
788 * @param size The size of the file in the input stream.
789 * @return 0 for success, nonzero for failure.
790 */
791int
792read_file_from_stream_to_file(struct s_bkpinfo *bkpinfo, char *outfile,
793                              long long size)
794{
795
796    /*@ int ******************************************************** */
797    int res;
798
799    /*@ end vars *************************************************** */
800
801    res = read_file_from_stream_FULL(bkpinfo, outfile, NULL, size);
802
803    return (res);
804}
805
806
807/**
808 * Copy a file from the currently opened stream (CD or tape) to the stream indicated
809 * by @p fout.
810 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
811 * @param fout The stream to write the file to.
812 * @param size The size of the file in bytes.
813 * @return 0 for success, nonzero for failure.
814 */
815int
816read_file_from_stream_to_stream(struct s_bkpinfo *bkpinfo, FILE * fout,
817                                long long size)
818{
819
820    /*@ int ******************************************************** */
821    int res;
822
823    /*@ end vars *************************************************** */
824
825    res = read_file_from_stream_FULL(bkpinfo, NULL, fout, size);
826    return (res);
827}
828
829
830/**
831 * Copy a file from the currently opened stream (CD or tape) to either a
832 * @c FILE pointer indicating a currently-opened file, or a filename indicating
833 * a new file to create. This is the backbone function that read_file_from_stream_to_file()
834 * and read_file_from_stream_to_stream() are wrappers for.
835 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
836 * @param outfname If non-NULL, write to this file.
837 * @param foutstream If non-NULL, write to this stream.
838 * @param orig_size The original length of the file in bytes.
839 * @return 0 for success, nonzero for failure.
840 * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
841 */
842int
843read_file_from_stream_FULL(struct s_bkpinfo *bkpinfo, char *outfname,
844                           FILE * foutstream, long long orig_size)
845{
846    /*@ buffers ***************************************************** */
847    char *tmp = NULL;
848    char *datablock = NULL;
849    char *temp_fname;
850    char *temp_cksum;
851    char *actual_cksum = NULL;
852
853    /*@ int ********************************************************* */
854    int retval = 0;
855#ifdef EXTRA_TAPE_CHECKSUMS
856    int i, ch;
857#endif
858    int noof_blocks;
859    int ctrl_chr;
860    int res;
861    /*@ pointers **************************************************** */
862    FILE *fout;
863
864    /*@ long    ***************************************************** */
865    long bytes_to_write = 0;
866
867    /*@ long long *************************************************** */
868    long long temp_size, size;
869    long bytes_read, bytes_to_read;
870    long long total_read_from_tape_for_this_file = 0;
871    long long where_I_was_before_tape_change = 0;
872    /*@ unsigned int ************************************************ */
873    unsigned int crc16;
874    unsigned int crctt;
875
876    bool had_to_resync = FALSE;
877
878    /*@ init  ******************************************************* */
879    malloc_string(temp_fname);
880    malloc_string(temp_cksum);
881    datablock = mr_malloc(TAPE_BLOCK_SIZE);
882    crc16 = 0;
883    crctt = 0;
884    size = orig_size;
885
886    /*@ end vars *************************************************** */
887
888    res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
889    if (orig_size != temp_size && orig_size != -1) {
890        mr_asprintf(&tmp,
891                 "output file's size should be %ld K but is apparently %ld K",
892                 (long) size >> 10, (long) temp_size >> 10);
893        log_to_screen(tmp);
894        mr_free(tmp);
895    }
896    if (ctrl_chr != BLK_START_FILE) {
897        wrong_marker(BLK_START_FILE, ctrl_chr);
898        return (1);
899    }
900    mr_asprintf(&tmp, "Reading file from tape; writing to '%s'; %ld KB",
901             outfname, (long) size >> 10);
902    log_to_screen(tmp);
903    mr_free(tmp);
904
905    if (foutstream) {
906        fout = foutstream;
907    } else {
908        fout = fopen(outfname, "w");
909    }
910    if (!fout) {
911        log_OS_error(outfname);
912        log_to_screen(_("Cannot openout file"));
913        return (1);
914    }
915    total_read_from_tape_for_this_file = 0;
916    for (noof_blocks = 0; size > 0;
917         noof_blocks++, size -=
918         bytes_to_write, total_read_from_tape_for_this_file +=
919         bytes_read) {
920        bytes_to_write =
921            (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
922        bytes_to_read = TAPE_BLOCK_SIZE;
923        bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
924        while (bytes_read < bytes_to_read) {    // next tape!
925//    crctt=crc16=0;
926            where_I_was_before_tape_change = size;
927            mr_msg(4, "where_I_was_... = %lld",
928                    where_I_was_before_tape_change);
929            start_to_read_from_next_tape(bkpinfo);
930            mr_msg(4, "Started reading from next tape.");
931            skip_incoming_files_until_we_find_this_one(temp_fname);
932            mr_msg(4, "Skipped irrelevant files OK.");
933            for (size = orig_size; size > where_I_was_before_tape_change;
934                 size -= bytes_to_write) {
935                bytes_read =
936                    fread(datablock, 1, bytes_to_read, g_tape_stream);
937            }
938            mr_msg(4, "'size' is now %lld (should be %lld)", size,
939                    where_I_was_before_tape_change);
940            log_to_screen("Successfully re-sync'd tape");
941            had_to_resync = TRUE;
942            bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
943        }
944
945        (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
946
947#ifdef EXTRA_TAPE_CHECKSUMS
948        for (i = 0; i < (int) bytes_to_write; i++) {
949            ch = datablock[i];
950            crc16 = updcrcr(crc16, (unsigned) ch);
951            crctt = updcrc(crctt, (unsigned) ch);
952        }
953#endif
954    }
955    mr_msg(6, "Total read from tape for this file = %lld",
956            total_read_from_tape_for_this_file);
957    mr_msg(6, ".......................... Should be %lld", orig_size);
958    g_tape_posK += total_read_from_tape_for_this_file / 1024;
959    mr_asprintf(&actual_cksum, "%04x%04x", crc16, crctt);
960    if (foutstream) {           /*log_it("Finished writing to foutstream"); */
961    } else {
962        paranoid_fclose(fout);
963    }
964    res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
965    if (ctrl_chr != BLK_STOP_FILE) {
966        wrong_marker(BLK_STOP_FILE, ctrl_chr);
967//      fatal_error("Bad marker"); // return(1);
968    }
969    if (strcmp(temp_cksum, actual_cksum)) {
970        mr_asprintf(&tmp, _("actual cksum=%s; recorded cksum=%s"), actual_cksum,
971                 temp_cksum);
972        log_to_screen(tmp);
973        mr_free(tmp);
974
975        mr_asprintf(&tmp, _("%s (%ld K) is corrupt on tape"), temp_fname,
976                 (long) orig_size >> 10);
977        log_to_screen(tmp);
978        mr_free(tmp);
979        retval++;
980    }
981    mr_free(actual_cksum);
982    mr_free(datablock);
983    mr_free(temp_fname);
984    mr_free(temp_cksum);
985    return (retval);
986}
987
988
989/**
990 * Read a header block from the currently opened stream (CD or tape).
991 * This block indicates the length of the following file (if it's file-related)
992 * the filename (if it's file-related), and the block type.
993 * @param plen Where to put the length of the file. Valid only for file-related header blocks.
994 * @param filename Where to put the name of the file. Valid only for file-related header blocks.
995 * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
996 * @return 0 for success, nonzero for failure.
997 * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
998 */
999int
1000read_header_block_from_stream(long long *plen, char *filename,
1001                              int *pcontrol_char)
1002{
1003
1004    /*@ buffers ***************************************************** */
1005    char *tempblock;
1006
1007    /*@ int ********************************************************* */
1008    int i, retval;
1009
1010    /*@ end vars *************************************************** */
1011
1012    tempblock = (char *) mr_malloc((size_t) TAPE_BLOCK_SIZE);
1013
1014    for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
1015        tempblock[i] = 0;
1016    }
1017    while (!(*pcontrol_char = tempblock[7000])) {
1018        g_tape_posK +=
1019            fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
1020                  g_tape_stream) / 1024;
1021    }
1022    memcpy((char *) plen, tempblock + 7001, sizeof(long long));
1023    if (strcmp(tempblock + 6000 + *pcontrol_char, "Mondolicious, baby")) {
1024        log_it("Bad header block at %ld K", (long) g_tape_posK);
1025    }
1026    strcpy(filename, tempblock + 1000);
1027    if (*pcontrol_char == BLK_ABORTED_BACKUP) {
1028        log_to_screen("I can't verify an aborted backup.");
1029        retval = 1;
1030    } else {
1031        retval = 0;
1032    }
1033    for (i = 1000; i < 1020; i++) {
1034        if (tempblock[i] < 32 || tempblock[i] > 126) {
1035            tempblock[i] = ' ';
1036        }
1037    }
1038    tempblock[i] = '\0';
1039    mr_msg(6, "%s (fname=%s, size=%ld K)",
1040            marker_to_string(*pcontrol_char), tempblock + 1000,
1041            (long) (*plen) >> 10);
1042    mr_free(tempblock);
1043    return (retval);
1044}
1045
1046
1047/**
1048 * Add specified file/slice to the internal catalog of all archives written.
1049 * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
1050 * write the last [buffer size] MB from the catalog to the new tape, so we know
1051 * we have @e all archives on some CD/tape/whatever.
1052 * @param type The type of file we're cataloging (afioball, slice, something else)
1053 * @param number The fileset number or biggiefile number.
1054 * @param aux The slice number if it's a biggiefile, or any other additional info.
1055 * @param fn The original full pathname of the file we're recording.
1056 * @return The index of the record we just added.
1057 */
1058int register_in_tape_catalog(t_archtype type, int number, long aux,
1059                             char *fn)
1060{
1061    char *fname = NULL;
1062    char *p = NULL;
1063    struct s_tapecat_entry *te = NULL;
1064    struct mr_list_elt *elt = NULL;
1065
1066    p = strrchr(fn, '/');
1067    if (p) {
1068        p++;
1069    } else {
1070        p = fn;
1071    }
1072    mr_asprintf(&fname, p);
1073
1074    te = (struct s_tapecat_entry *)mr_malloc(sizeof(struct s_tapecat_entry));
1075    te->type = type;
1076    te->number = number;
1077    te->aux = aux;
1078    te->tape_posK = g_tape_posK;
1079    /* BERLIOS: Check if this is written womewhere, as it's only a pointer */
1080    /* BERLIOS: Verify to purge fname correctly */
1081    te->fname = fname;
1082
1083    /* place the data in a list elt */
1084    elt = mr_list_alloc_elt((void *)te, mr_free_te);
1085    mr_list_add_elt_last(tapecatalog, elt);
1086
1087    // returns the index of the record we've just added
1088    return (mr_list_length(tapecatalog));
1089}
1090
1091
1092/**
1093 * Decide whether we should start a new tape. This is TRUE if we've run out of tape
1094 * (got SIGPIPE) or look like we will.
1095 * @param mediasize The size of the tape in megabytes.
1096 * @param length_of_incoming_file The length of the file we're about to write, in bytes.
1097 * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
1098 * autodetecting the size. Huh?
1099 */
1100
1101/* BERLIOS: Should be reviewed for mediasize being a off_t ??? */
1102bool
1103should_we_write_to_next_tape(long mediasize,
1104                             off_t length_of_incoming_file)
1105{
1106    /*@ bool's ***************************************************** */
1107    bool we_need_a_new_tape = FALSE;
1108
1109    /*@ end vars *************************************************** */
1110
1111    if (mediasize == 0) {
1112        return (FALSE);
1113    }
1114    if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
1115        log_it("mediasize = %ld", mediasize);
1116        we_need_a_new_tape = TRUE;
1117        log_to_screen(_("Should have started a new tape/CD already"));
1118    }
1119    if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
1120        mediasize - (SLICE_SIZE * 4 / 1024)) {
1121        log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
1122               mediasize);
1123        we_need_a_new_tape = TRUE;
1124    }
1125    return (we_need_a_new_tape);
1126}
1127
1128
1129/**
1130 * Seek through the stream until we find a header block where the NAME field matches
1131 * @p the_file_I_was_reading. This is useful if you've just started reading from
1132 * a new tape and want to find the file you were reading when the tape ended.
1133 * @param the_file_I_was_reading File name to look for.
1134 * @return 0 for success, nonzero for failure.
1135 */
1136int skip_incoming_files_until_we_find_this_one(char
1137                                               *the_file_I_was_reading)
1138{
1139    char *pA;
1140    char *pB;
1141    int res;
1142    int ctrl_chr;
1143    char *temp_fname;
1144    char *datablock;
1145    long long temp_size, size;
1146    long bytes_to_write;
1147
1148    datablock = mr_malloc(TAPE_BLOCK_SIZE);
1149    malloc_string(temp_fname);
1150    pB = strrchr(the_file_I_was_reading, '/');
1151    if (pB) {
1152        pB++;
1153    } else {
1154        pB = the_file_I_was_reading;
1155    }
1156    mr_msg(1, "skip_incoming_..(%s)", pB);
1157    mr_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
1158    ctrl_chr = -1;
1159    while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
1160        res =
1161            read_header_block_from_stream(&temp_size, temp_fname,
1162                                          &ctrl_chr);
1163        if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
1164            break;
1165        }
1166        mr_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
1167        wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
1168        mr_msg(3, "Still trying to re-sync w/ tape");
1169    }
1170    while (ctrl_chr != BLK_START_FILE) {
1171        res =
1172            read_header_block_from_stream(&temp_size, temp_fname,
1173                                          &ctrl_chr);
1174        if (ctrl_chr == BLK_START_FILE) {
1175            break;
1176        }
1177        mr_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
1178        wrong_marker(BLK_START_FILE, ctrl_chr);
1179        mr_msg(3, "Still trying to re-sync w/ tape");
1180    }
1181    pA = strrchr(temp_fname, '/');
1182    if (pA) {
1183        pA++;
1184    } else {
1185        pA = temp_fname;
1186    }
1187    pB = strrchr(the_file_I_was_reading, '/');
1188    if (pB) {
1189        pB++;
1190    } else {
1191        pB = the_file_I_was_reading;
1192    }
1193    while (strcmp(pA, pB)) {
1194        mr_msg(6, "Skipping %s (it's not %s)", temp_fname,
1195                the_file_I_was_reading);
1196        for (size = temp_size; size > 0; size -= bytes_to_write) {
1197            bytes_to_write =
1198                (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
1199            // FIXME - needs error-checking and -catching
1200            fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream);
1201        }
1202        res =
1203            read_header_block_from_stream(&temp_size, temp_fname,
1204                                          &ctrl_chr);
1205        if (ctrl_chr != BLK_STOP_FILE) {
1206            wrong_marker(BLK_STOP_FILE, ctrl_chr);
1207        }
1208        res =
1209            read_header_block_from_stream(&temp_size, temp_fname,
1210                                          &ctrl_chr);
1211        if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
1212            wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
1213        }
1214        res =
1215            read_header_block_from_stream(&temp_size, temp_fname,
1216                                          &ctrl_chr);
1217        if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
1218            wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
1219        }
1220        res =
1221            read_header_block_from_stream(&temp_size, temp_fname,
1222                                          &ctrl_chr);
1223        if (ctrl_chr != BLK_START_FILE) {
1224            wrong_marker(BLK_START_FILE, ctrl_chr);
1225        }
1226        pA = strrchr(temp_fname, '/');
1227        if (pA) {
1228            pA++;
1229        } else {
1230            pA = temp_fname;
1231        }
1232        pB = strrchr(the_file_I_was_reading, '/');
1233        if (pB) {
1234            pB++;
1235        } else {
1236            pB = the_file_I_was_reading;
1237        }
1238    }
1239    mr_msg(2, "Reading %s (it matches %s)", temp_fname,
1240            the_file_I_was_reading);
1241    mr_free(temp_fname);
1242    mr_free(datablock);
1243    return (0);
1244}
1245
1246
1247/**
1248 * Start to read from the next tape. Assumes the user has already inserted it.
1249 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
1250 * @return 0 for success, nonzero for failure.
1251 */
1252int start_to_read_from_next_tape(struct s_bkpinfo *bkpinfo)
1253{
1254    /*@ int ********************************************************* */
1255    int res = 0;
1256    char *sz_msg;
1257    int ctrlchr;
1258    long long temp_size;
1259    malloc_string(sz_msg);
1260    /*@ end vars *************************************************** */
1261
1262    paranoid_pclose(g_tape_stream);
1263    sync();
1264    sync();
1265    sync();
1266    log_it("Next tape requested.");
1267    insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
1268    log_it("Opening IN the next tape");
1269    if (!
1270        (g_tape_stream =
1271         open_device_via_buffer(bkpinfo->media_device, 'r',
1272                                bkpinfo->internal_tape_block_size))) {
1273        log_to_screen(_("Cannot openin stream device"));
1274        return (1);
1275    }
1276    g_tape_posK = 0;
1277    g_sigpipe = FALSE;
1278    res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
1279    if (ctrlchr != BLK_START_OF_TAPE) {
1280        wrong_marker(BLK_START_OF_TAPE, ctrlchr);
1281    }
1282    res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
1283    if (ctrlchr != BLK_START_OF_BACKUP) {
1284        wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
1285    } else {
1286        mr_msg(3, "Next tape opened OK. Whoopee!");
1287    }
1288    mr_free(sz_msg);
1289    return (res);
1290}
1291
1292
1293/**
1294 * Start to write to the next tape. Assume the user has already inserted it.
1295 * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
1296 * @return 0 for success, nonzero for failure.
1297 */
1298int start_to_write_to_next_tape(struct s_bkpinfo *bkpinfo)
1299{
1300    int res = 0;
1301    char *command = NULL;
1302
1303    paranoid_pclose(g_tape_stream);
1304    sync();
1305    sync();
1306    sync();
1307    log_it("New tape requested.");
1308    insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
1309    if (bkpinfo->backup_media_type == cdstream) {
1310        mr_asprintf(&command,
1311                 "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
1312                 bkpinfo->media_device, bkpinfo->cdrw_speed, MONDO_LOGFILE,
1313                 MONDO_LOGFILE);
1314        log_it("Opening OUT to next CD with the command");
1315        log_it(command);
1316        log_it("Let's see what happens, shall we?");
1317        g_tape_stream = popen(command, "w");
1318        mr_free(command);
1319        if (!g_tape_stream) {
1320            log_to_screen(_("Failed to openout to cdstream (fifo)"));
1321            return (1);
1322        }
1323    } else {
1324        log_it("Opening OUT to next tape");
1325        if (!
1326            (g_tape_stream =
1327             open_device_via_buffer(bkpinfo->media_device, 'w',
1328                                    bkpinfo->internal_tape_block_size))) {
1329            log_to_screen(_("Cannot openin stream device"));
1330            return (1);
1331        }
1332    }
1333    g_tape_posK = 0;
1334    g_sigpipe = FALSE;
1335    res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE);  /* just in case */
1336    res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP);  /* just in case */
1337    return (res);
1338}
1339
1340
1341/**
1342 * Write a bufferfull of the most recent archives to the tape. The
1343 * rationale behind this is a bit complex. If the previous tape ended
1344 * suddenly (EOF or otherwise) some archives were probably left in the
1345 * buffer. That means that Mondo thinks they have been written, but
1346 * the external binary @c buffer has not actually written them. So to
1347 * be safe, we start the new tape by writing the last bufferfull from
1348 * the old one. This insures that all archives will be on at least
1349 * one tape. Sounds inelegant, but it works.
1350 * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
1351 * @return 0 for success, nonzero for failure.
1352 */
1353int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo)
1354{
1355    int res = 0;
1356    char *fname = NULL;
1357    struct mr_list_elt *elt = NULL;
1358    struct s_tapecat_entry *te = NULL;
1359
1360    mr_msg(2, "I am now writing back catalog to tape");
1361    elt = tapecatalog->first;
1362    while (elt != NULL) {
1363        te = (struct s_tapecat_entry *) elt->data;
1364        mr_asprintf(&fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, te->fname);
1365        if (!does_file_exist(fname)) {
1366            mr_msg(6, "Can't write %s - it doesn't exist.", fname);
1367        } else {
1368            write_header_block_to_stream(length_of_file(fname),
1369                                         "start-backcatalog-afio-or-slice",
1370                                         BLK_START_AN_AFIO_OR_SLICE);
1371            mr_msg(2, "Writing %s", fname);
1372            if (write_file_to_stream_from_file(bkpinfo, fname)) {
1373                res++;
1374                mr_msg(2, "%s failed", fname);
1375            }
1376            if (i != last) {
1377                write_header_block_to_stream((off_t)0,
1378                                             "stop-backcatalog-afio-or-slice",
1379                                             BLK_STOP_AN_AFIO_OR_SLICE);
1380            }
1381        }
1382        mr_free(fname);
1383        elt = elt->next;
1384    }
1385    mr_msg(2, "Finished writing back catalog to tape");
1386    return (res);
1387}
1388
1389
1390/**
1391 * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
1392 * @param fname The path to all.tar.gz.
1393 * @return 0 for success, nonzero for failure.
1394 */
1395int write_data_disks_to_stream(char *fname)
1396{
1397    /*@ pointers *************************************************** */
1398    FILE *fin = NULL;
1399    char *tmp = NULL;
1400
1401    /*@ long ******************************************************* */
1402    long m = -1;
1403    long templong;
1404
1405    /*@ int ******************************************************** */
1406    int i, j;
1407
1408    /*@ buffers **************************************************** */
1409    char tempblock[256 * 1024];
1410
1411    /*@ end vars *************************************************** */
1412
1413    open_evalcall_form(_("Writing data disks to tape"));
1414    log_to_screen(_("Writing data disks to tape"));
1415    log_it("Data disks = %s", fname);
1416    if (!does_file_exist(fname)) {
1417        mr_asprintf(&tmp, _("Cannot find %s"), fname);
1418        log_to_screen(tmp);
1419        mr_free(tmp);
1420        return (1);
1421    }
1422    if (!(fin = fopen(fname, "r"))) {
1423        log_OS_error(fname);
1424        fatal_error("Cannot openin the data disk");
1425    }
1426    for (i = 0; i < 32; i++) {  /* 32MB */
1427        for (j = 0; j < 4; j++) {   /* 256K x 4 = 1MB (1024K) */
1428            if (!feof(fin)) {
1429                m = (long) fread(tempblock, 1, 256 * 1024, fin);
1430            } else {
1431                m = 0;
1432            }
1433            for (; m < 256 * 1024; m++) {
1434                tempblock[m] = '\0';
1435            }
1436            g_tape_posK +=
1437                fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
1438        }
1439        if (i > g_tape_buffer_size_MB)  // otherwise, 'buffer' distorts calculations
1440        {
1441            templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
1442            update_evalcall_form((int) (templong));
1443        }
1444    }
1445    paranoid_fclose(fin);
1446    close_evalcall_form();
1447    return (0);
1448}
1449
1450
1451/**
1452 * Copy @p infile to the opened stream (CD or tape).
1453 * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
1454 * @param infile The file to write to the stream.
1455 * @return 0 for success, nonzero for failure.
1456 */
1457int write_file_to_stream_from_file(struct s_bkpinfo *bkpinfo, char *infile)
1458{
1459    /*@ buffers **************************************************** */
1460    char *tmp = NULL;
1461    char datablock[TAPE_BLOCK_SIZE];
1462    char *checksum = NULL;
1463    char *infile_basename = NULL;
1464
1465    /*@ int ******************************************************** */
1466    int retval = 0;
1467    int noof_blocks;
1468
1469    /*  unsigned int ch; */
1470    unsigned int crc16;
1471    unsigned int crctt;
1472
1473    /*@ pointers *************************************************** */
1474    FILE *fin;
1475    char *p;
1476
1477    /*@ long ******************************************************* */
1478    long bytes_to_read = 0;
1479    long i;
1480
1481    off_t filesize;
1482
1483#ifdef EXTRA_TAPE_CHECKSUMS
1484    int ch;
1485#endif
1486
1487    /*@ initialize ************************************************ */
1488    crc16 = 0;
1489    crctt = 0;
1490
1491    /*@ end vars *************************************************** */
1492
1493    infile_basename = strrchr(infile, '/');
1494    if (infile_basename) {
1495        infile_basename++;
1496    } else {
1497        infile_basename = infile;
1498    }
1499    filesize = length_of_file(infile);
1500    if (should_we_write_to_next_tape
1501        (bkpinfo->media_size, filesize)) {
1502        start_to_write_to_next_tape(bkpinfo);
1503        write_backcatalog_to_tape(bkpinfo);
1504    }
1505    p = strrchr(infile, '/');
1506    if (!p) {
1507        p = infile;
1508    } else {
1509        p++;
1510    }
1511    mr_asprintf(&tmp, "Writing file '%s' to tape (%ld KB)", p,
1512             (long) filesize >> 10);
1513    log_it(tmp);
1514    mr_free(tmp);
1515
1516    write_header_block_to_stream(filesize, infile_basename,
1517                                 BLK_START_FILE);
1518//go_here_to_restart_saving_of_file:
1519    if (!(fin = fopen(infile, "r"))) {
1520        log_OS_error(infile);
1521        return (1);
1522    }
1523    for (noof_blocks = 0; filesize > 0;
1524         noof_blocks++, filesize -= bytes_to_read) {
1525        if (filesize < TAPE_BLOCK_SIZE) {
1526            bytes_to_read = (long) filesize;
1527            for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
1528                datablock[i] = '\0';
1529            }
1530        } else {
1531            bytes_to_read = TAPE_BLOCK_SIZE;
1532        }
1533        (void) fread(datablock, 1, (size_t) bytes_to_read, fin);
1534        g_tape_posK += fwrite(datablock, 1, /*bytes_to_read */
1535                              (size_t) TAPE_BLOCK_SIZE,
1536                              g_tape_stream) / 1024;
1537        if (g_sigpipe) {
1538            iamhere("Sigpipe occurred recently. I'll start a new tape.");
1539            fclose(fin);
1540            g_sigpipe = FALSE;
1541            start_to_write_to_next_tape(bkpinfo);
1542            write_backcatalog_to_tape(bkpinfo); // kinda-sorta recursive :)
1543            return (0);
1544        }
1545#ifdef EXTRA_TAPE_CHECKSUMS
1546        for (i = 0; i < bytes_to_read; i++) {
1547            ch = datablock[i];
1548            crc16 = updcrcr(crc16, (unsigned) ch);
1549            crctt = updcrc(crctt, (unsigned) ch);
1550        }
1551#endif
1552    }
1553    paranoid_fclose(fin);
1554    mr_asprintf(&checksum, "%04x%04x", crc16, crctt);
1555    /* BERLIOS: what does it do ??? */
1556    write_header_block_to_stream((off_t)g_current_media_number, checksum,
1557                                 BLK_STOP_FILE);
1558    mr_free(checksum);
1559//  log_it("File '%s' written to tape.", infile);
1560    return (retval);
1561}
1562
1563
1564/**
1565 * Write a header block to the opened stream (CD or tape).
1566 * @param length_of_incoming_file The length to store in the header block.
1567 * Usually matters only if this is a file-related header, in which case it should
1568 * be the length of the file that will follow.
1569 * @param filename The filename to store in the header block. Usually matters
1570 * only if this is a file-related header, in which case this should be the name
1571 * if the file that will follow.
1572 * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
1573 * @return 0 for success, nonzero for failure.
1574 */
1575int
1576write_header_block_to_stream(off_t length_of_incoming_file,
1577                             char *filename, int control_char)
1578{
1579    /*@ buffers **************************************************** */
1580    char tempblock[TAPE_BLOCK_SIZE];
1581    char *p;
1582
1583    /*@ int ******************************************************** */
1584    int i;
1585
1586    off_t olen;
1587
1588    /*@ end vars *************************************************** */
1589
1590
1591    olen = length_of_incoming_file;
1592    p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
1593    if (!p) {
1594        p = filename;
1595    } else {
1596        p++;
1597    }
1598    if (!g_tape_stream) {
1599        log_to_screen
1600            (_("You're not backing up to tape. Why write a tape header?"));
1601        return (1);
1602    }
1603    for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
1604        tempblock[i] = 0;
1605    }
1606    sprintf(tempblock + 6000 + control_char, "Mondolicious, baby");
1607    tempblock[7000] = control_char;
1608    memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
1609    strcpy(tempblock + 1000, filename);
1610    g_tape_posK +=
1611        fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
1612               g_tape_stream) / 1024;
1613    mr_msg(6, "%s (fname=%s, size=%ld K)",
1614            marker_to_string(control_char), p,
1615            (long) length_of_incoming_file >> 10);
1616    return (0);
1617}
1618
1619
1620/**
1621 * Log (to screen) an erroneous marker, along with what it should have been.
1622 * @param should_be What we were expecting.
1623 * @param it_is What we got.
1624 */
1625void wrong_marker(int should_be, int it_is)
1626{
1627    /*@ buffer ***************************************************** */
1628    char *tmp = NULL;
1629
1630
1631    /*@ end vars *************************************************** */
1632    mr_asprintf(&tmp, _("Wrong marker! (Should be %s, is actually %s)"),
1633             marker_to_string(should_be), marker_to_string(it_is));
1634    log_to_screen(tmp);
1635    mr_free(tmp);
1636}
1637
1638/* @} - end of streamGroup */
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