source: branches/2.2.7/mondo/src/common/libmondo-tools.c @ 2030

Last change on this file since 2030 was 2030, checked in by Bruno Cornec, 12 years ago
  • Fix #252
  • Improve OCFS2 support (ocfs2 is a SANE_FORMAT)
  • Property svn:keywords set to Id
File size: 40.6 KB
Line 
1/*
2   $Id: libmondo-tools.c 2030 2008-10-02 23:50:44Z bruno $
3*/
4
5
6/**
7 * @file
8 * Miscellaneous tools that didn't really fit anywhere else.
9 */
10
11#include "my-stuff.h"
12#include "mondostructures.h"
13#include "lib-common-externs.h"
14#include "libmondo-tools.h"
15#include "libmondo-gui-EXT.h"
16#include "libmondo-files-EXT.h"
17#include "libmondo-fork-EXT.h"
18#include "libmondo-raid-EXT.h"
19#include "libmondo-devices-EXT.h"
20#include <sys/socket.h>
21#include <netdb.h>
22#include <stdlib.h>
23#include <netinet/in.h>
24#include <arpa/inet.h>
25#include <sys/utsname.h>
26
27/*@unused@*/
28//static char cvsid[] = "$Id: libmondo-tools.c 2030 2008-10-02 23:50:44Z bruno $";
29
30extern int g_tape_buffer_size_MB;
31extern char *g_serial_string;
32extern bool g_text_mode;
33extern int g_currentY;
34extern int g_current_media_number;
35extern char *MONDO_LOGFILE;
36
37/* Reference to global bkpinfo */
38extern struct s_bkpinfo *bkpinfo;
39
40/**
41 * @addtogroup globalGroup
42 * @{
43 */
44bool g_remount_cdrom_at_end,    ///< TRUE if we unmounted the CD-ROM and should remount it when done with the backup.
45 g_remount_floppy_at_end;       ///< TRUE if we unmounted the floppy and should remount it when done with the backup.
46bool g_cd_recovery;             ///< TRUE if we're making an "autonuke" backup.
47double g_kernel_version;
48
49/**
50 * The place where /boot is mounted.
51 */
52char *g_boot_mountpt = NULL;
53
54/**
55 * The location of Mondo's home directory.
56 */
57char *g_mondo_home = NULL;
58
59/**
60 * The serial string (used to differentiate between backups) of the current backup.
61 */
62char *g_serial_string = NULL;
63
64/**
65 * The location where tmpfs is mounted, or "" if it's not mounted.
66char *g_tmpfs_mountpt = NULL;
67 */
68char *g_magicdev_command = NULL;
69
70/**
71 * The default maximum level to log messages at or below.
72 */
73int g_loglevel = DEFAULT_DEBUG_LEVEL;
74
75/* @} - end of globalGroup */
76
77
78extern pid_t g_buffer_pid;
79extern pid_t g_main_pid;
80
81extern t_bkptype g_backup_media_type;
82
83extern bool am_I_in_disaster_recovery_mode(void);
84
85/* Return a string containing the date */
86char *mr_date(void) {
87
88        time_t tcurr;
89
90        tcurr = time(NULL);
91        return(ctime(&tcurr));
92}
93
94/*-----------------------------------------------------------*/
95
96
97/**
98 * @addtogroup utilityGroup
99 * @{
100 */
101/**
102 * Assertion handler. Prints a friendly message to the user,
103 * offering to ignore all, dump core, break to debugger,
104 * exit, or ignore. Intended to be used with an assert() macro.
105 *
106 * @param file The file in which the assertion triggered.
107 * @param function The function (@c __FUNCTION__) in which the assertion triggered.
108 * @param line The line number of the assert() statement.
109 * @param exp The expression that failed (as a string).
110 */
111void _mondo_assert_fail(const char *file,
112                        const char *function, int line, const char *exp)
113{
114    static int ignoring_assertions = 0;
115    bool is_valid = TRUE;
116
117    log_it("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line,
118           function);
119    if (ignoring_assertions) {
120        log_it("Well, the user doesn't care...");
121        return;
122    }
123#ifndef _XWIN
124    if (!g_text_mode)
125        newtSuspend();
126#endif
127    printf("ASSERTION FAILED: `%s'\n", exp);
128    printf("\tat %s:%d in %s\n\n", file, line, function);
129    printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
130    do {
131        is_valid = TRUE;
132        switch (toupper(getchar())) {
133        case 'A':               // ignore (A)ll
134            ignoring_assertions = 1;
135            break;
136        case 'B':               // a(B)ort
137            signal(SIGABRT, SIG_DFL);   /* prevent SIGABRT handler from running */
138            raise(SIGABRT);
139            break;              /* "can't get here" */
140        case 'D':               // (D)ebug, aka asm("int 3")
141#ifdef __IA32__
142            __asm__ __volatile__("int $3"); // break to debugger
143#endif
144            break;
145        case 'E':               // (E)xit
146            fatal_error("Failed assertion -- see above for details");
147            break;              /* "can't get here" */
148        case 'I':               // (I)gnore
149            break;
150            /* These next two work as follows:
151               the `default' catches the user's invalid choice and says so;
152               the '\n' catches the newline on the end and prints the prompt again.
153             */
154        case '\n':
155            printf
156                ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
157            break;
158        default:
159            is_valid = FALSE;
160            printf("Invalid choice.\n");
161            break;
162        }
163    } while (!is_valid);
164
165    if (ignoring_assertions) {
166        log_it("Ignoring ALL assertions from now on.");
167    } else {
168        log_it("Ignoring assertion: %s", exp);
169    }
170
171    getchar();                  // skip \n
172
173#ifndef _XWIN
174    if (!g_text_mode)
175        newtResume();
176#endif
177}
178
179/**
180 * Clean's up users' KDE desktops.
181 * @bug Details about this function are unknown.
182 */
183void clean_up_KDE_desktop_if_necessary(void)
184{
185    char *tmp;
186
187    malloc_string(tmp);
188    strcpy(tmp,
189           "for i in `find /root /home -type d -name Desktop -maxdepth 2`; do \
190file=$i/.directory; if [ -f \"$file\" ] ; then mv -f $file $file.old ; \
191awk '{if (index($0, \"rootimagesmindi\")) { while (length($0)>2) { getline;} ; } \
192else { print $0;};}' $file.old  > $file ; fi ; done");
193    run_program_and_log_output(tmp, 5);
194    paranoid_free(tmp);
195}
196
197
198/**
199 * Locate mondoarchive's home directory. Searches in /usr/local/mondo, /usr/share/mondo,
200 * /usr/local/share/mondo, /opt, or if all else fails, search /usr.
201 *
202 * @param home_sz String to store the home directory ("" if it could not be found).
203 * @return 0 for success, nonzero for failure.
204 */
205int find_and_store_mondoarchives_home(char *home_sz)
206{
207    assert(home_sz != NULL);
208    strcpy(home_sz, MONDO_SHARE);
209    return (0);
210}
211
212
213char *get_architecture(void) {
214#ifdef __IA32__
215#   ifdef __X86_64__
216        return ("x86_64");
217#   else
218        return ("i386");
219#   endif
220#endif
221#ifdef __IA64__
222    return ("ia64");
223#endif
224    return ("unknown");
225}
226
227
228char *get_uname_m(void) {
229
230    struct utsname utsn;
231    char *tmp = NULL;
232
233    uname(&utsn);
234    asprintf(&tmp, utsn.machine);
235    return (tmp);
236}
237
238
239
240double get_kernel_version(void)
241{
242    char *p, tmp[200];
243    double d;
244#ifdef __FreeBSD__
245    // JOSH - FIXME :)
246    d = 5.2;                    // :-)
247#else
248    strcpy(tmp, call_program_and_get_last_line_of_output("uname -r"));
249    p = strchr(tmp, '.');
250    if (p) {
251        p = strchr(++p, '.');
252        if (p) {
253            while (*p) {
254                *p = *(p + 1);
255                p++;
256            }
257        }
258    }
259//  log_msg(1, "tmp = '%s'", tmp);
260    d = atof(tmp);
261#endif
262    log_msg(1, "g_kernel_version = %f", d);
263    return (d);
264}
265
266
267
268
269
270/**
271 * Get the current time.
272 * @return number of seconds since the epoch.
273 */
274long get_time()
275{
276    return (long) time((void *) 0);
277}
278
279
280
281
282
283
284
285/**
286 * Initialize a RAID volume structure, setting fields to zero. The
287 * actual hard drive is unaffected.
288 *
289 * @param raidrec The RAID volume structure to initialize.
290 * @note This function is system dependent.
291 */
292#ifdef __FreeBSD__
293void initialize_raidrec(struct vinum_volume *raidrec)
294{
295    int i, j;
296    raidrec->volname[0] = '\0';
297    raidrec->plexes = 0;
298    for (i = 0; i < 9; ++i) {
299        raidrec->plex[i].raidlevel = -1;
300        raidrec->plex[i].stripesize = 0;
301        raidrec->plex[i].subdisks = 0;
302        for (j = 0; j < 9; ++j) {
303            strcpy(raidrec->plex[i].sd[j].which_device, "");
304        }
305    }
306}
307#else
308void initialize_raidrec(struct raid_device_record *raidrec)
309{
310    assert(raidrec != NULL);
311    raidrec->raid_device[0] = '\0';
312    raidrec->raid_level = -9;
313    raidrec->persistent_superblock = 1;
314    raidrec->chunk_size = 64;
315    raidrec->parity = -1;
316    raidrec->data_disks.entries = 0;
317    raidrec->spare_disks.entries = 0;
318    raidrec->parity_disks.entries = 0;
319    raidrec->failed_disks.entries = 0;
320    raidrec->additional_vars.entries = 0;
321}
322#endif
323
324
325
326
327/**
328 * Insert modules that Mondo requires.
329 * Currently inserts @c msdos, @c vfat, and @c loop for Linux;
330 * @c msdosfs and @c ext2fs for FreeBSD.
331 */
332void insmod_crucial_modules(void)
333{
334#ifdef __FreeBSD__
335    system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
336    system("kldstat | grep ext2fs  || kldload ext2fs 2> /dev/null");
337#else
338    system("modprobe -a msdos vfat loop &> /dev/null");
339#endif
340}
341
342
343/**
344 * Log a trace message to the trace file.
345 * @bug This function seems orphaned. Please remove.
346 */
347void log_trace(char *o)
348{
349    /*@ pointers **************************************************** */
350    FILE *fout;
351
352    /*@ buffers ***************************************************** */
353    char output[MAX_STR_LEN];
354
355    /*@ int    ****************************************************** */
356    int i;
357
358    /*@ end vars *************************************************** */
359
360    if (o[0] == '\0') {
361        return;
362    }
363    strcpy(output, o);
364    i = (int) strlen(output);
365    if (i <= 0) {
366        return;
367    }
368    if (output[i - 1] < 32) {
369        output[i - 1] = '\0';
370    }
371    if (g_text_mode
372        /* && !strstr(last_line_of_file(MONDO_LOGFILE),output) */ ) {
373        printf("%s\n", output);
374    }
375
376    fout = fopen(MONDO_TRACEFILE, "a");
377    if (fout) {
378        fprintf(fout, "%s\n", output);
379        paranoid_fclose(fout);
380    } else {
381        log_OS_error("Cannot write to tracefile");
382    }
383}
384
385
386
387
388
389/**
390 * Finish configuring the backup information structure. Call this function
391 * to set the parameters that depend on those that can be given on the command
392 * line.
393 *
394 * @param bkpinfo The backup information structure. Fields modified/used:
395 * - Used: @c bkpinfo->backup_data
396 * - Used: @c bkpinfo->backup_media_type
397 * - Used: @c bkpinfo->cdrw_speed
398 * - Used: @c bkpinfo->compression_level
399 * - Used: @c bkpinfo->include_paths
400 * - Used: @c bkpinfo->prefix
401 * - Used: @c bkpinfo->isodir
402 * - Used: @c bkpinfo->manual_cd_tray
403 * - Used: @c bkpinfo->make_cd_use_lilo
404 * - Used: @c bkpinfo->media_device
405 * - Used: @c bkpinfo->nfs_mount
406 * - Used: @c bkpinfo->nonbootable_backup
407 * - Used: @c bkpinfo->scratchdir
408 * - Used: @c bkpinfo->tmpdir
409 * - Used: @c bkpinfo->use_lzo
410 * - Modified: @c bkpinfo->call_before_iso
411 * - Modified: @c bkpinfo->call_make_iso
412 * - Modified: @c bkpinfo->optimal_set_size
413 * - Modified: @c bkpinfo->zip_exe
414 * - Modified: @c bkpinfo->zip_suffix
415 *
416 * @return number of errors, or 0 for success.
417 * @note Also creates directories that are specified in the @c bkpinfo structure but
418 * do not exist.
419 */
420int post_param_configuration()
421{
422    char *extra_cdrom_params;
423    char *mondo_mkisofs_sz;
424    char *command;
425    char *mtpt;
426    char *hostname, *ip_address;
427    int retval = 0;
428    char *colon;
429    char *cdr_exe;
430    char *tmp;
431    char call_before_iso_user[MAX_STR_LEN] = "\0";
432    /*
433    long avm = 0;
434    int rdsiz_MB;
435    */
436    char *iso_dev;
437    char *iso_mnt;
438    char *iso_tmp;
439    char *iso_path;
440
441    assert(bkpinfo != NULL);
442    malloc_string(extra_cdrom_params);
443    malloc_string(mondo_mkisofs_sz);
444    malloc_string(command);
445    malloc_string(mtpt);
446    malloc_string(hostname);
447    malloc_string(ip_address);
448    malloc_string(cdr_exe);
449    malloc_string(tmp);
450    malloc_string(iso_dev);
451    malloc_string(iso_mnt);
452    malloc_string(iso_tmp);
453    malloc_string(iso_path);
454    bkpinfo->optimal_set_size =
455        (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 16 : 16) *
456        1024;
457
458    log_msg(1, "Foo");
459    if (bkpinfo->backup_media_type == tape) {
460        log_msg(1, "Bar");
461        sprintf(tmp, "mt -f %s status", bkpinfo->media_device);
462        log_msg(1, "tmp = '%s'", tmp);
463        if (run_program_and_log_output(tmp, 3)) {
464            fatal_error
465                ("Unable to open tape device. If you haven't specified it with -d, do so. If you already have, check your parameter. I think it's wrong.");
466        }
467    }
468    make_hole_for_dir(bkpinfo->scratchdir);
469    if (bkpinfo->backup_media_type == iso)
470        make_hole_for_dir(bkpinfo->isodir);
471
472    run_program_and_log_output("uname -a", 5);
473    run_program_and_log_output("cat /etc/*-release", 5);
474    run_program_and_log_output("cat /etc/*issue*", 5);
475    /*
476    sprintf(g_tmpfs_mountpt, "%s/tmpfs", bkpinfo->tmpdir);
477    sprintf(command, "mkdir -p %s", g_tmpfs_mountpt);
478    paranoid_system(command);
479    rdsiz_MB = PPCFG_RAMDISK_SIZE + g_tape_buffer_size_MB;
480    */
481#ifdef __FreeBSD__
482    /*
483    strcpy(tmp,
484           call_program_and_get_last_line_of_output
485           ("vmstat | tail -1 | tr -s ' ' | cut -d' ' -f6"));
486    avm += atol(tmp);
487    strcpy(tmp,
488           call_program_and_get_last_line_of_output
489           ("swapinfo | grep -v Device | tr -s ' ' | cut -d' ' -f4 | tr '\n' '+' | sed 's/+$//' | bc"));
490    avm += atol(tmp);
491    sprintf(command, "mdmfs -s %d%c md9 %s", rdsiz_MB, 'm',
492            g_tmpfs_mountpt);
493            */
494#else
495    /*
496    strcpy(tmp,
497           call_program_and_get_last_line_of_output
498           ("free | grep ':' | tr -s ' ' '\t' | cut -f2 | head -n1"));
499    avm += atol(tmp);
500    sprintf(command, "mount /dev/shm -t tmpfs %s -o size=%d%c",
501            g_tmpfs_mountpt, rdsiz_MB, 'm');
502            */
503    run_program_and_log_output("cat /proc/cpuinfo", 5);
504    run_program_and_log_output
505        ("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc",
506         5);
507#endif
508    /*
509    if (avm / 1024 > rdsiz_MB * 3) {
510        if (run_program_and_log_output(command, 5)) {
511            g_tmpfs_mountpt[0] = '\0';
512            log_it("Failed to mount tmpfs");
513        } else {
514            log_it("Tmpfs mounted OK - %d MB", rdsiz_MB);
515        }
516    } else {
517        g_tmpfs_mountpt[0] = '\0';
518        log_it("It doesn't seem you have enough swap to use tmpfs. Fine.");
519    }
520    */
521
522    if (bkpinfo->use_lzo) {
523        strcpy(bkpinfo->zip_exe, "lzop");
524        strcpy(bkpinfo->zip_suffix, "lzo");
525    } else if (bkpinfo->use_gzip) {
526        strcpy(bkpinfo->zip_exe, "gzip");
527        strcpy(bkpinfo->zip_suffix, "gz");
528    } else if (bkpinfo->compression_level != 0) {
529        strcpy(bkpinfo->zip_exe, "bzip2");
530        strcpy(bkpinfo->zip_suffix, "bz2");
531    } else {
532        bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
533    }
534
535// DVD
536
537    if (bkpinfo->backup_media_type == dvd) {
538        extra_cdrom_params[0] = '\0';
539        mondo_mkisofs_sz[0] = '\0';
540        if (find_home_of_exe("growisofs")) {
541            strcpy(cdr_exe, "growisofs");
542        }                       // unlikely to be used
543        else {
544            fatal_error("Please install growisofs.");
545        }
546        if (bkpinfo->nonbootable_backup) {
547            strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
548        } else if
549#ifdef __FreeBSD__
550            (TRUE)
551#else
552            (bkpinfo->make_cd_use_lilo)
553#endif
554#ifdef __IA64__
555    {
556        strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
557    }
558#else
559    {
560        strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
561    }
562#endif
563        else
564        {
565            strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
566        }
567        if (bkpinfo->manual_cd_tray) {
568            fatal_error("Manual CD tray + DVD not supported yet.");
569            // -m isn't supported by growisofs, BTW...
570        } else {
571            sprintf(bkpinfo->call_make_iso,
572                    "%s %s -Z %s . 2>> _ERR_",
573                    mondo_mkisofs_sz,
574                    extra_cdrom_params, bkpinfo->media_device);
575        }
576        if (getenv ("SUDO_COMMAND")) {
577            sprintf(command, "strings `which growisofs` | grep -c SUDO_COMMAND");
578            if (!strcmp(call_program_and_get_last_line_of_output(command), "1")) {
579                popup_and_OK("Fatal Error: Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
580                fatal_error("Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
581            }       
582        }
583        log_msg(2, "call_make_iso (DVD res) is ... %s",
584                bkpinfo->call_make_iso);
585    }                           // end of DVD code
586
587// CD-R or CD-RW
588    if (bkpinfo->backup_media_type == cdrw
589        || bkpinfo->backup_media_type == cdr) {
590        extra_cdrom_params[0] = '\0';
591        if (!bkpinfo->manual_cd_tray) {
592            strcat(extra_cdrom_params, "-waiti ");
593        }
594        if (bkpinfo->backup_media_type == cdrw) {
595            strcat(extra_cdrom_params, "blank=fast ");
596        }
597        if (find_home_of_exe("cdrecord")) {
598            strcpy(cdr_exe, "cdrecord");
599        } else if (find_home_of_exe("dvdrecord")) {
600            strcpy(cdr_exe, "dvdrecord");
601        } else {
602            fatal_error("Please install either cdrecord or dvdrecord.");
603        }
604        if (bkpinfo->nonbootable_backup) {
605            strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_NONBOOT);
606        } else if
607#ifdef __FreeBSD__
608            (TRUE)
609#else
610            (bkpinfo->make_cd_use_lilo)
611#endif
612#ifdef __IA64__
613    {
614        strcat(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_ELILO);
615    }
616#else
617    {
618        strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_LILO);
619    }
620#endif
621        else
622        {
623            strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_SYSLINUX);
624        }
625        if (bkpinfo->manual_cd_tray) {
626            if (bkpinfo->call_before_iso[0] == '\0') {
627            sprintf(bkpinfo->call_before_iso,
628                        "%s -o %s/"MONDO_TMPISOS" . 2>> _ERR_",
629                        mondo_mkisofs_sz, bkpinfo->tmpdir);
630                } else {
631                strncpy(call_before_iso_user, bkpinfo->call_before_iso, MAX_STR_LEN);
632                sprintf (bkpinfo->call_before_iso,
633                                    "( %s -o %s/"MONDO_TMPISOS" . 2>> _ERR_ ; %s )",
634                        mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
635            }
636            log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
637            sprintf(bkpinfo->call_make_iso,
638                    "%s %s -v %s fs=4m dev=%s speed=%d %s/"MONDO_TMPISOS,
639                    cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject",
640                    extra_cdrom_params, bkpinfo->media_device,
641                    bkpinfo->cdrw_speed, bkpinfo->tmpdir);
642        } else {
643            sprintf(bkpinfo->call_make_iso,
644                    "%s . 2>> _ERR_ | %s %s %s fs=4m dev=%s speed=%d -",
645                    mondo_mkisofs_sz, cdr_exe,
646                    (bkpinfo->please_dont_eject) ? " " : "-eject",
647                    extra_cdrom_params, bkpinfo->media_device,
648                    bkpinfo->cdrw_speed);
649        }
650    }                           // end of CD code
651
652    /*
653       if (bkpinfo->backup_data && bkpinfo->backup_media_type == tape)
654       {
655       sprintf (tmp,
656       "dd if=/dev/zero of=%s bs=%ld count=32 2> /dev/null",
657       bkpinfo->media_device, bkpinfo->internal_tape_block_size);
658       if (system(tmp))
659       {
660       retval++;
661       fprintf (stderr,
662       "Cannot write to tape device. Is the tape set read-only?\n");
663       }
664       } // end of tape code
665     */
666
667
668    if (bkpinfo->backup_media_type == iso) {
669
670/* Patch by Conor Daly <conor.daly@met.ie>
671 * 23-june-2004
672 * Break up isodir into iso_mnt and iso_path
673 * These will be used along with iso-dev at restore time
674 * to locate the ISOs where ever they're mounted
675 */
676
677        log_it("isodir = %s", bkpinfo->isodir);
678        sprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1",
679                bkpinfo->isodir);
680        log_it("command = %s", command);
681        log_it("res of it = %s",
682               call_program_and_get_last_line_of_output(command));
683        sprintf(iso_dev, "%s",
684                call_program_and_get_last_line_of_output(command));
685        sprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
686        write_one_liner_data_file(tmp,
687                                  call_program_and_get_last_line_of_output
688                                  (command));
689
690        sprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3",
691                iso_dev);
692        log_it("command = %s", command);
693        log_it("res of it = %s",
694               call_program_and_get_last_line_of_output(command));
695        sprintf(iso_mnt, "%s",
696                call_program_and_get_last_line_of_output(command));
697        sprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
698        write_one_liner_data_file(tmp,
699                                  call_program_and_get_last_line_of_output
700                                  (command));
701        log_it("isomnt: %s, %d", iso_mnt, strlen(iso_mnt));
702        sprintf(iso_tmp, "%s", bkpinfo->isodir);
703        if (strlen(iso_tmp) < strlen(iso_mnt)) {
704            iso_path[0] = '\0';
705        } else {
706            sprintf(iso_path, "%s", iso_tmp + strlen(iso_mnt));
707        }
708        sprintf(tmp, "%s/ISODIR", bkpinfo->tmpdir);
709        write_one_liner_data_file(tmp, iso_path);
710        log_it("isodir: %s", iso_path);
711        sprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
712        write_one_liner_data_file(tmp, bkpinfo->prefix);
713        log_it("iso-prefix: %s",  bkpinfo->prefix);
714
715/* End patch */
716    }                           // end of iso code
717
718    if (bkpinfo->backup_media_type == nfs) {
719        strcpy(hostname, bkpinfo->nfs_mount);
720        colon = strchr(hostname, ':');
721        if (!colon) {
722            log_it("nfs mount doesn't have a colon in it");
723            retval++;
724        } else {
725            struct hostent *hent;
726
727            *colon = '\0';
728            hent = gethostbyname(hostname);
729            if (!hent) {
730                log_it("Can't resolve NFS mount (%s): %s", hostname,
731                       hstrerror(h_errno));
732                retval++;
733            } else {
734                strcpy(ip_address, inet_ntoa
735                       ((struct in_addr)
736                        *((struct in_addr *) hent->h_addr)));
737                strcat(ip_address, strchr(bkpinfo->nfs_mount, ':'));
738                strcpy(bkpinfo->nfs_mount, ip_address);
739            }
740        }
741        store_nfs_config();
742    }
743
744    log_it("Finished processing incoming params");
745    if (retval) {
746        fprintf(stderr, "Type 'man mondoarchive' for help.\n");
747    }
748    if (strlen(bkpinfo->tmpdir) < 2 || strlen(bkpinfo->scratchdir) < 2) {
749        log_it("tmpdir or scratchdir are blank/missing");
750        retval++;
751    }
752    if (bkpinfo->include_paths[0] == '\0') {
753        //      fatal_error ("Why no backup path?");
754        strcpy(bkpinfo->include_paths, "/");
755    }
756    chmod(bkpinfo->scratchdir, 0700);
757    g_backup_media_type = bkpinfo->backup_media_type;
758    paranoid_free(mtpt);
759    paranoid_free(extra_cdrom_params);
760    paranoid_free(mondo_mkisofs_sz);
761    paranoid_free(command);
762    paranoid_free(hostname);
763    paranoid_free(ip_address);
764    paranoid_free(cdr_exe);
765    paranoid_free(tmp);
766    paranoid_free(iso_dev);
767    paranoid_free(iso_mnt);
768    paranoid_free(iso_tmp);
769    paranoid_free(iso_path);
770    return (retval);
771}
772
773
774
775/**
776 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
777 * Seeds the random-number generator, loads important modules, checks the sanity
778 * of the user's Linux distribution, and deletes logfile.
779 * @param bkpinfo The backup information structure. Will be initialized.
780 * @return number of errors (0 for success)
781 */
782int pre_param_configuration()
783{
784    int res = 0;
785    char *tmp = NULL;
786
787    make_hole_for_dir(MNT_CDROM);
788    assert(bkpinfo != NULL);
789    srandom((unsigned long) (time(NULL)));
790    insmod_crucial_modules();
791    if (bkpinfo->disaster_recovery) {
792        if (!does_nonMS_partition_exist()) {
793            fatal_error
794                ("I am in disaster recovery mode\nPlease don't run mondoarchive.");
795        }
796    }
797
798    unlink(MONDO_TRACEFILE);
799    asprintf(&tmp,"rm -Rf %s/changed.files*",MONDO_CACHE);
800    run_program_and_log_output(tmp, FALSE);
801    paranoid_free(tmp);
802    if (find_and_store_mondoarchives_home(g_mondo_home)) {
803        fprintf(stderr,
804                "Cannot find Mondo's homedir. I think you have >1 'mondo' directory on your hard disk. Please delete the superfluous 'mondo' directories and try again\n");
805        res++;
806        return (res);
807    }
808    res += some_basic_system_sanity_checks();
809    if (res) {
810        log_it("Your distribution did not pass Mondo's sanity test.");
811    }
812    g_current_media_number = 1;
813    bkpinfo->postnuke_tarball[0] = bkpinfo->nfs_mount[0] = '\0';
814    return (res);
815}
816
817void setup_tmpdir(char *path) {
818
819    char *tmp = NULL;
820    char *p = NULL;
821
822    if ((bkpinfo->tmpdir != NULL) && (strstr(bkpinfo->tmpdir,"mondo.tmp.") != NULL)) {
823        /* purging a potential old tmpdir */
824        asprintf(&tmp,"rm -Rf %s",bkpinfo->tmpdir);
825        system(tmp);
826        paranoid_free(tmp);
827    }
828
829    if (path != NULL) {
830        asprintf(&tmp, "%s/mondo.tmp.XXXXXX", path);
831    } else if (getenv("TMPDIR")) {
832        asprintf(&tmp, "%s/mondo.tmp.XXXXXX", getenv("TMPDIR"));
833    } else if (getenv("TMP")) {
834        asprintf(&tmp, "%s/mondo.tmp.XXXXXX", getenv("TMP"));
835    } else {
836        asprintf(&tmp, "/tmp/mondo.tmp.XXXXXX");
837    }
838    p = mkdtemp(tmp);
839    if (p == NULL) {
840        log_it("Failed to create global tmp directory %s for Mondo.",tmp);
841        finish(-1);
842    }
843    strcpy(bkpinfo->tmpdir,p);
844    paranoid_free(tmp);
845}
846
847
848/**
849 * Reset all fields of the backup information structure to a sensible default.
850 * @param bkpinfo The @c bkpinfo to reset.
851 */
852void reset_bkpinfo()
853{
854    int i;
855
856    log_msg(1, "Hi");
857    assert(bkpinfo != NULL);
858    memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
859
860    bkpinfo->media_device[0] = '\0';
861    for (i = 0; i <= MAX_NOOF_MEDIA; i++) {
862        bkpinfo->media_size[i] = -1;
863    }
864    bkpinfo->boot_loader = '\0';
865    bkpinfo->boot_device[0] = '\0';
866    bkpinfo->zip_exe[0] = '\0';
867    bkpinfo->zip_suffix[0] = '\0';
868    bkpinfo->image_devs[0] = '\0';
869    bkpinfo->compression_level = 3;
870    bkpinfo->use_lzo = FALSE;
871    bkpinfo->use_gzip = FALSE;
872    bkpinfo->do_not_compress_these[0] = '\0';
873    bkpinfo->verify_data = FALSE;
874    bkpinfo->backup_data = FALSE;
875    bkpinfo->restore_data = FALSE;
876    bkpinfo->use_star = FALSE;
877    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
878    bkpinfo->disaster_recovery =
879        (am_I_in_disaster_recovery_mode()? TRUE : FALSE);
880    if (bkpinfo->disaster_recovery) {
881        strcpy(bkpinfo->isodir, "/");
882    } else {
883        strcpy(bkpinfo->isodir, "/var/cache/mondo");
884    }
885    strcpy(bkpinfo->prefix, STD_PREFIX);
886    sensibly_set_tmpdir_and_scratchdir();
887
888    bkpinfo->optimal_set_size = 0;
889    strcpy(bkpinfo->include_paths, "/");
890    bkpinfo->make_filelist = TRUE;  // unless -J supplied to mondoarchive
891    bkpinfo->include_paths[0] = '\0';
892    bkpinfo->exclude_paths[0] = '\0';
893    bkpinfo->restore_path[0] = '\0';
894    bkpinfo->call_before_iso[0] = '\0';
895    bkpinfo->call_make_iso[0] = '\0';
896    bkpinfo->call_burn_iso[0] = '\0';
897    bkpinfo->call_after_iso[0] = '\0';
898    bkpinfo->kernel_path[0] = '\0';
899    bkpinfo->nfs_mount[0] = '\0';
900    bkpinfo->nfs_remote_dir[0] = '\0';
901    bkpinfo->postnuke_tarball[0] = '\0';
902    bkpinfo->wipe_media_first = FALSE;
903    bkpinfo->differential = 0;
904    bkpinfo->please_dont_eject = FALSE;
905    bkpinfo->cdrw_speed = 0;
906    bkpinfo->manual_cd_tray = FALSE;
907    bkpinfo->nonbootable_backup = FALSE;
908    bkpinfo->make_cd_use_lilo = FALSE;
909    bkpinfo->use_obdr = FALSE;
910    bkpinfo->restore_mode = interactive;
911}
912
913
914
915
916/**
917 * Get the remaining free space (in MB) on @p partition.
918 * @param partition The partition to check free space on (either a device or a mountpoint).
919 * @return The free space on @p partition, in MB.
920 */
921long free_space_on_given_partition(char *partition)
922{
923    char command[MAX_STR_LEN], out_sz[MAX_STR_LEN];
924    long res;
925
926    assert_string_is_neither_NULL_nor_zerolength(partition);
927
928    sprintf(command, "df -m -P %s 1> /dev/null 2> /dev/null", partition);
929    if (system(command)) {
930        return (-1);
931    }                           // partition does not exist
932    sprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4",
933            partition);
934    strcpy(out_sz, call_program_and_get_last_line_of_output(command));
935    if (strlen(out_sz) == 0) {
936        return (-1);
937    }                           // error within df, probably
938    res = atol(out_sz);
939    return (res);
940}
941
942
943
944/**
945 * Check the user's system for sanity. Checks performed:
946 * - make sure user has enough RAM (32mb required, 64mb recommended)
947 * - make sure user has enough free space in @c /
948 * - check kernel for ramdisk support
949 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
950 * - make sure CD-ROM is unmounted
951 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
952 *
953 * @return number of problems with the user's setup (0 for success)
954 */
955int some_basic_system_sanity_checks()
956{
957
958    /*@ buffers ************ */
959    char tmp[MAX_STR_LEN];
960    //  char command[MAX_STR_LEN];
961
962    /*@ int's *************** */
963    int retval = 0;
964
965    mvaddstr_and_log_it(g_currentY, 0,
966                        "Checking sanity of your Linux distribution");
967#ifndef __FreeBSD__
968    if (system("which mkfs.vfat 2> /dev/null 1> /dev/null")
969        && !system("which mkfs.msdos 2> /dev/null 1> /dev/null")) {
970        log_it
971            ("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
972        run_program_and_log_output
973            ("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
974    }
975    strcpy(tmp,
976           call_program_and_get_last_line_of_output
977           ("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
978    if (atol(tmp) < 35000) {
979        retval++;
980        log_to_screen("You must have at least 32MB of RAM to use Mondo.");
981    }
982    if (atol(tmp) < 66000) {
983        log_to_screen
984            ("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
985    }
986#endif
987
988    if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
989        retval++;
990        log_to_screen
991            ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
992        fatal_error
993            ("Please use \"su -\", not \"su\" to become root. OK? ...and please don't e-mail the mailing list or me about this. Just read the message. :)");
994    }
995#ifndef __FreeBSD__
996    if (run_program_and_log_output
997        ("grep ramdisk /proc/devices", FALSE)) {
998        if (!ask_me_yes_or_no
999            ("Your kernel has no ramdisk support. That's mind-numbingly stupid but I'll allow it if you're planning to use a failsafe kernel. Are you?"))
1000        {
1001            //          retval++;
1002            log_to_screen
1003                ("It looks as if your kernel lacks ramdisk and initrd support.");
1004            log_to_screen
1005                ("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
1006        }
1007    }
1008#endif
1009    retval += whine_if_not_found(MKE2FS_OR_NEWFS);
1010    retval += whine_if_not_found("mkisofs");
1011    if (system("which dvdrecord > /dev/null 2> /dev/null")) {
1012        retval += whine_if_not_found("cdrecord");
1013    }
1014    retval += whine_if_not_found("bzip2");
1015    retval += whine_if_not_found("gzip");
1016    retval += whine_if_not_found("awk");
1017    retval += whine_if_not_found("md5sum");
1018    retval += whine_if_not_found("strings");
1019    retval += whine_if_not_found("mindi");
1020    retval += whine_if_not_found("buffer");
1021
1022    // abort if Windows partition but no ms-sys and parted
1023    if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -vE \"/dev/fd|nexdisk\"", 0)) {
1024        log_to_screen("I think you have a Windows 9x partition.");
1025        retval += whine_if_not_found("parted");
1026    }
1027
1028    if (!find_home_of_exe("cmp")) {
1029        if (!find_home_of_exe("true")) {
1030            whine_if_not_found("cmp");
1031        } else {
1032            log_to_screen
1033                ("Your system lacks the 'cmp' binary. I'll create a dummy cmp for you.");
1034            if (run_program_and_log_output
1035                ("cp -f `which true` /usr/bin/cmp", 0)) {
1036                fatal_error("Failed to create dummy 'cmp' file.");
1037            }
1038        }
1039    }
1040    run_program_and_log_output
1041        ("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
1042    strcpy(tmp,
1043           call_program_and_get_last_line_of_output
1044           ("mount | grep -E \"cdr(om|w)\""));
1045    if (strcmp("", tmp)) {
1046        if (strstr(tmp, "autofs")) {
1047            log_to_screen
1048                ("Your CD-ROM is mounted via autofs. I therefore cannot tell");
1049            log_to_screen
1050                ("if a CD actually is inserted. If a CD is inserted, please");
1051            log_to_screen("eject it. Thank you.");
1052            log_it
1053                ("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
1054        } else
1055            if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
1056            retval++;
1057            fatal_error
1058                ("Your CD-ROM drive is mounted. Please unmount it.");
1059        }
1060    }
1061
1062    run_program_and_log_output("cat /etc/fstab", 5);
1063#ifdef __FreeBSD__
1064    run_program_and_log_output("vinum printconfig", 5);
1065#else
1066    run_program_and_log_output("cat /etc/raidtab", 5);
1067#endif
1068
1069    if (run_program_and_log_output("mindi -V", 1)) {
1070        log_to_screen("Could not ascertain mindi's version number.");
1071        log_to_screen
1072            ("You have not installed Mondo and/or Mindi properly.");
1073        log_to_screen("Please uninstall and reinstall them both.");
1074        fatal_error("Please reinstall Mondo and Mindi.");
1075    }
1076    sprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test", bkpinfo->tmpdir);
1077    if (run_program_and_log_output(tmp, 5)) {
1078        sprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test failed for some reason.", bkpinfo->tmpdir);
1079        log_to_screen(tmp);
1080        log_to_screen
1081            ("Please run that command by hand and examine /var/log/mindi.log");
1082        log_to_screen
1083            ("for more information. Perhaps your /etc/fstab file is insane.");
1084        log_to_screen
1085            ("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
1086        retval++;
1087    }
1088
1089    if (!run_program_and_log_output("parted2fdisk -l | grep -i raid", 1)
1090        && !does_file_exist("/etc/raidtab")) {
1091        log_to_screen
1092            ("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1093        create_raidtab_from_mdstat("/etc/raidtab");
1094    }
1095
1096    if (retval) {
1097        mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1098    } else {
1099        mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1100    }
1101    return (retval);
1102}
1103
1104/**
1105 * Retrieve the line containing @p label from the config file.
1106 * @param config_file The file to read from, usually @c /tmp/mondo-restore.cfg.
1107 * @param label What to read from the file.
1108 * @param value Where to put it.
1109 * @return 0 for success, 1 for failure.
1110 */
1111int read_cfg_var(char *config_file, char *label, char *value)
1112{
1113    /*@ buffer ****************************************************** */
1114    char command[MAX_STR_LEN * 2];
1115    char tmp[MAX_STR_LEN];
1116
1117    /*@ end vars *************************************************** */
1118
1119    assert_string_is_neither_NULL_nor_zerolength(config_file);
1120    assert_string_is_neither_NULL_nor_zerolength(label);
1121    if (!does_file_exist(config_file)) {
1122        sprintf(tmp, "(read_cfg_var) Cannot find %s config file",
1123                config_file);
1124        log_to_screen(tmp);
1125        value[0] = '\0';
1126        return (1);
1127    } else if ((value != NULL) && (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))) {
1128        log_msg(2, "FYI, I can't read new value for %s - already got %s", label, value);
1129        return (0);
1130    } else {
1131        sprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5",
1132                label, config_file);
1133        strcpy(value, call_program_and_get_last_line_of_output(command));
1134        if (strlen(value) == 0) {
1135            return (1);
1136        } else {
1137            return (0);
1138        }
1139    }
1140}
1141
1142
1143
1144/**
1145 * Remount @c supermount if it was unmounted earlier.
1146 */
1147void remount_supermounts_if_necessary()
1148{
1149    if (g_remount_cdrom_at_end) {
1150        run_program_and_log_output("mount " MNT_CDROM, FALSE);
1151    }
1152    if (g_remount_floppy_at_end) {
1153        run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1154    }
1155}
1156
1157/**
1158 * Unmount @c supermount if it's mounted.
1159 */
1160void unmount_supermounts_if_necessary()
1161{
1162    if (run_program_and_log_output
1163        ("mount | grep cdrom | grep super", FALSE) == 0) {
1164        g_remount_cdrom_at_end = TRUE;
1165        run_program_and_log_output("umount " MNT_CDROM, FALSE);
1166    }
1167    if (run_program_and_log_output
1168        ("mount | grep floppy | grep super", FALSE) == 0) {
1169        g_remount_floppy_at_end = TRUE;
1170        run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1171    }
1172}
1173
1174/**
1175 * Whether we had to stop autofs (if so, restart it at end).
1176 */
1177bool g_autofs_stopped = FALSE;
1178
1179/**
1180 * Path to the autofs initscript ("" if none exists).
1181 */
1182char g_autofs_exe[MAX_STR_LEN];
1183
1184/**
1185 * Autofs initscript in Xandros Linux distribution.
1186 */
1187#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1188
1189/**
1190 * Autofs initscript in most Linux distributions.
1191 */
1192#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1193
1194/**
1195 * If autofs is mounted, stop it (restart at end).
1196 */
1197void stop_autofs_if_necessary()
1198{
1199    char tmp[MAX_STR_LEN];
1200
1201    g_autofs_exe[0] = '\0';
1202    if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1203        strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1204    } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1205        strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1206    }
1207
1208    if (!g_autofs_exe[0]) {
1209        log_msg(3, "No autofs detected.");
1210    } else {
1211        log_msg(3, "%s --- autofs detected", g_autofs_exe);
1212// FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1213        sprintf(tmp, "%s stop", g_autofs_exe);
1214        if (run_program_and_log_output(tmp, 2)) {
1215            log_it("Failed to stop autofs - I assume it wasn't running");
1216        } else {
1217            g_autofs_stopped = TRUE;
1218            log_it("Stopped autofs OK");
1219        }
1220    }
1221}
1222
1223/**
1224 * If autofs was stopped earlier, restart it.
1225 */
1226void restart_autofs_if_necessary()
1227{
1228    char tmp[MAX_STR_LEN];
1229
1230    if (!g_autofs_stopped || !g_autofs_exe[0]) {
1231        log_msg(3, "No autofs detected.");
1232        return;
1233    }
1234    sprintf(tmp, "%s start", g_autofs_exe);
1235    if (run_program_and_log_output(tmp, 2)) {
1236        log_it("Failed to start autofs");
1237    } else {
1238        g_autofs_stopped = FALSE;
1239        log_it("Started autofs OK");
1240    }
1241}
1242
1243
1244/**
1245 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1246 */
1247void mount_boot_if_necessary()
1248{
1249    char tmp[MAX_STR_LEN];
1250    char command[MAX_STR_LEN];
1251
1252    log_msg(1, "Started sub");
1253    log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1254    g_boot_mountpt[0] = '\0';
1255    log_msg(4, "Done. Great. Seeting command to something");
1256    strcpy(command,
1257           "grep -v \":\" /etc/fstab | grep -vE '^#.*$' | grep -E \"[   ]/boot[     ]\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1258    log_msg(4, "Cool. Command = '%s'", command);
1259    strcpy(tmp, call_program_and_get_last_line_of_output(command));
1260    log_msg(4, "tmp = '%s'", tmp);
1261    if (tmp[0]) {
1262        log_it("/boot is at %s according to /etc/fstab", tmp);
1263        strcpy(command, "mount | grep -Ew '/boot'");
1264        strcpy(tmp, call_program_and_get_last_line_of_output(command));
1265        if (!strcmp(tmp,"")) {
1266            if ((strstr(tmp, "LABEL=") || strstr(tmp,"UUID="))) {
1267                if (!run_program_and_log_output("mount /boot", 5)) {
1268                    strcpy(g_boot_mountpt, "/boot");
1269                    log_msg(1, "Mounted /boot");
1270                } else {
1271                    log_it("...ignored cos it's a label or uuid :-)");
1272                }
1273            } else {
1274                sprintf(command, "mount | grep -E '^%s'", tmp);
1275                log_msg(3, "command = %s", command);
1276                if (run_program_and_log_output(command, 5)) {
1277                    strcpy(g_boot_mountpt, tmp);
1278                    sprintf(tmp,
1279                            "%s (your /boot partition) is not mounted. I'll mount it before backing up",
1280                            g_boot_mountpt);
1281                    log_it(tmp);
1282                    sprintf(tmp, "mount %s", g_boot_mountpt);
1283                    if (run_program_and_log_output(tmp, 5)) {
1284                        g_boot_mountpt[0] = '\0';
1285                        log_msg(1, "Plan B");
1286                        if (!run_program_and_log_output("mount /boot", 5)) {
1287                            strcpy(g_boot_mountpt, "/boot");
1288                            log_msg(1, "Plan B worked");
1289                        } else {
1290                            log_msg(1,
1291                                "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1292                        }
1293                    }
1294                }
1295            }
1296        }
1297    }
1298    log_msg(1, "Ended sub");
1299}
1300
1301
1302/**
1303 * If we mounted /boot earlier, unmount it.
1304 */
1305void unmount_boot_if_necessary()
1306{
1307    char tmp[MAX_STR_LEN];
1308
1309    log_msg(3, "starting");
1310    if (g_boot_mountpt[0]) {
1311        sprintf(tmp, "umount %s", g_boot_mountpt);
1312        if (run_program_and_log_output(tmp, 5)) {
1313            log_it("WARNING - unable to unmount /boot");
1314        }
1315    }
1316    log_msg(3, "leaving");
1317}
1318
1319
1320
1321/**
1322 * Write a line to a configuration file. Writes a line of the form,
1323 * @c label @c value.
1324 * @param config_file The file to write to. Usually @c mondo-restore.cfg.
1325 * @param label What to call this bit of data you're writing.
1326 * @param value The bit of data you're writing.
1327 * @return 0 for success, 1 for failure.
1328 */
1329int write_cfg_var(char *config_file, char *label, char *value)
1330{
1331    /*@ buffers ***************************************************** */
1332    char command[MAX_STR_LEN * 2];
1333    char tempfile[MAX_STR_LEN];
1334    char tmp[MAX_STR_LEN];
1335
1336
1337    /*@ end vars *************************************************** */
1338    assert_string_is_neither_NULL_nor_zerolength(config_file);
1339    assert_string_is_neither_NULL_nor_zerolength(label);
1340    assert(value != NULL);
1341    if (!does_file_exist(config_file)) {
1342        sprintf(tmp, "(write_cfg_file) Cannot find %s config file",
1343                config_file);
1344        log_to_screen(tmp);
1345        return (1);
1346    }
1347    sprintf(tempfile, "%s/mojo-jojo.blah", bkpinfo->tmpdir);
1348    if (does_file_exist(config_file)) {
1349        sprintf(command, "grep -vE '^%s .*$' %s > %s",
1350                label, config_file, tempfile);
1351        paranoid_system(command);
1352    }
1353    sprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1354    paranoid_system(command);
1355    sprintf(command, "mv -f %s %s", tempfile, config_file);
1356    paranoid_system(command);
1357    unlink(tempfile);
1358    return (0);
1359}
1360
1361
1362/**
1363 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1364 * information to the logfile.
1365 */
1366void standard_log_debug_msg(int debug_level, const char *szFile,
1367                            const char *szFunction, int nLine,
1368                            const char *fmt, ...)
1369{
1370    va_list args;
1371    int i;
1372    static int depth = 0;
1373    char *tmp;
1374    FILE *fout;
1375
1376    if (depth > 5) {
1377        depth--;
1378        return;
1379    }
1380    depth++;
1381
1382    malloc_string(tmp);
1383
1384    if (debug_level <= g_loglevel) {
1385        va_start(args, fmt);
1386        if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1387            return;
1388        }       // fatal_error("Failed to openout to logfile - sheesh..."); }
1389
1390        // add tabs to distinguish log levels
1391        if (debug_level > 0) {
1392            for (i = 1; i < debug_level; i++)
1393                fprintf(fout, "\t");
1394            if (getpid() == g_main_pid)
1395                fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction,
1396                        nLine);
1397            else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1398                fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction,
1399                        nLine);
1400            else
1401                fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile,
1402                        szFunction, nLine);
1403        }
1404        vfprintf(fout, fmt, args);
1405
1406        // do not slow down the progran if standard debug level
1407        // must be enabled: if no flush, the log won't be up-to-date if there
1408        // is a segfault
1409        //if (g_dwDebugLevel != 1)
1410
1411        va_end(args);
1412        fprintf(fout, "\n");
1413        paranoid_fclose(fout);
1414    }
1415    depth--;
1416    paranoid_free(tmp);
1417}
1418
1419/**
1420 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1421 */
1422void (*log_debug_msg) (int, const char *, const char *, int, const char *,
1423                       ...) = standard_log_debug_msg;
1424
1425
1426/**
1427 * If @p y, malloc @p x, else free @p x.
1428 * @bug This function seems orphaned. Please remove.
1429 */
1430#define do_alloc_or_free_depending(x,y) { if(y) {x=malloc(MAX_STR_LEN);} else {paranoid_free(x);} }
1431
1432/**
1433 * Allocate or free important globals, depending on @p mal.
1434 * @param mal If TRUE, malloc; if FALSE, free.
1435 */
1436void do_libmondo_global_strings_thing(int mal)
1437{
1438    if (mal) {
1439        malloc_string(g_boot_mountpt);
1440        malloc_string(g_mondo_home);
1441        /*
1442        malloc_string(g_tmpfs_mountpt);
1443        */
1444        malloc_string(g_serial_string);
1445        malloc_string(g_magicdev_command);
1446    } else {
1447        paranoid_free(g_boot_mountpt);
1448        paranoid_free(g_mondo_home);
1449        /*
1450        paranoid_free(g_tmpfs_mountpt);
1451        */
1452        paranoid_free(g_serial_string);
1453        paranoid_free(g_magicdev_command);
1454    }
1455
1456    /*
1457       char**list_of_arrays[] = {
1458       &g_boot_mountpt,
1459       &g_mondo_home,
1460       &g_tmpfs_mountpt,
1461       &g_serial_string,
1462       &g_magicdev_command,
1463       NULL};
1464
1465       char**ppcurr;
1466       int i;
1467
1468       for(i=0;list_of_arrays[i];i++)
1469       {
1470       log_msg(5, "Allocating %d", i);
1471       ppcurr = list_of_arrays[i];
1472       if (mal)
1473       { *ppcurr = malloc(MAX_STR_LEN); }
1474       else
1475       {
1476       if (*ppcurr)
1477       {
1478       free(*ppcurr);
1479       }
1480       }
1481       }
1482       log_msg(5, "Returning");
1483     */
1484}
1485
1486/**
1487 * Allocate important globals.
1488 * @see do_libmondo_global_strings_thing
1489 */
1490void malloc_libmondo_global_strings(void)
1491{
1492    do_libmondo_global_strings_thing(1);
1493}
1494
1495/**
1496 * Free important globals.
1497 * @see do_libmondo_global_strings_thing
1498 */
1499void free_libmondo_global_strings(void)
1500{
1501    do_libmondo_global_strings_thing(0);
1502}
1503
1504
1505
1506/**
1507 * Stop @c magicdev if it's running.
1508 * The command used to start it is saved in @p g_magicdev_command.
1509 */
1510void stop_magicdev_if_necessary()
1511{
1512    strcpy(g_magicdev_command,
1513           call_program_and_get_last_line_of_output
1514           ("ps ax | grep -w magicdev | grep -v grep | tr -s '\t' ' '| cut -d' ' -f6-99"));
1515    if (g_magicdev_command[0]) {
1516        log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1517        paranoid_system("killall magicdev");
1518    }
1519}
1520
1521
1522/**
1523 * Restart magicdev if it was stopped.
1524 */
1525void restart_magicdev_if_necessary()
1526{
1527    char *tmp;
1528
1529    malloc_string(tmp);
1530    if (g_magicdev_command && g_magicdev_command[0]) {
1531        sprintf(tmp, "%s &", g_magicdev_command);
1532        paranoid_system(tmp);
1533    }
1534    paranoid_free(tmp);
1535}
1536
1537/* @} - end of utilityGroup */
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