source: MondoRescue/branches/2.2.10/mondo/src/common/libmondo-tools.c @ 2329

Last change on this file since 2329 was 2329, checked in by Bruno Cornec, 12 years ago

r3340@localhost: bruno | 2009-08-12 00:17:29 +0200
Improve portability by defining all cmdline usage in 1 include (/tmp for FreeBSD and /proc fior LInux). Also doing tht for scripts.

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1/*
2   $Id: libmondo-tools.c 2329 2009-08-18 13:20:46Z 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 "mr_mem.h"
13#include "mondostructures.h"
14#include "lib-common-externs.h"
15#include "libmondo-tools.h"
16#include "libmondo-gui-EXT.h"
17#include "libmondo-files-EXT.h"
18#include "libmondo-fork-EXT.h"
19#include "libmondo-raid-EXT.h"
20#include "libmondo-devices-EXT.h"
21#include <sys/socket.h>
22#include <netdb.h>
23#include <stdlib.h>
24#include <netinet/in.h>
25#include <arpa/inet.h>
26#include <sys/utsname.h>
27
28/*@unused@*/
29//static char cvsid[] = "$Id: libmondo-tools.c 2329 2009-08-18 13:20:46Z bruno $";
30
31extern int g_tape_buffer_size_MB;
32extern bool g_text_mode;
33extern int g_currentY;
34extern int g_current_media_number;
35extern char *MONDO_LOGFILE;
36extern char *g_serial_string;
37
38/* Reference to global bkpinfo */
39extern struct s_bkpinfo *bkpinfo;
40
41/**
42 * @addtogroup globalGroup
43 * @{
44 */
45bool g_remount_cdrom_at_end,    ///< TRUE if we unmounted the CD-ROM and should remount it when done with the backup.
46 g_remount_floppy_at_end;       ///< TRUE if we unmounted the floppy and should remount it when done with the backup.
47bool g_cd_recovery;             ///< TRUE if we're making an "autonuke" backup.
48double g_kernel_version;
49
50/**
51 * The place where /boot is mounted.
52 */
53char *g_boot_mountpt = NULL;
54
55/**
56 * The location of Mondo's home directory.
57 */
58char *g_mondo_home = NULL;
59
60/**
61 * The location where tmpfs is mounted, or "" if it's not mounted.
62char *g_tmpfs_mountpt = NULL;
63 */
64char *g_magicdev_command = NULL;
65
66/**
67 * The default maximum level to log messages at or below.
68 */
69int g_loglevel = DEFAULT_DEBUG_LEVEL;
70
71/* @} - end of globalGroup */
72
73
74extern pid_t g_buffer_pid;
75extern pid_t g_main_pid;
76
77extern t_bkptype g_backup_media_type;
78
79extern bool am_I_in_disaster_recovery_mode(void);
80
81/*-----------------------------------------------------------*/
82
83
84/**
85 * @addtogroup utilityGroup
86 * @{
87 */
88/**
89 * Assertion handler. Prints a friendly message to the user,
90 * offering to ignore all, dump core, break to debugger,
91 * exit, or ignore. Intended to be used with an assert() macro.
92 *
93 * @param file The file in which the assertion triggered.
94 * @param function The function (@c __FUNCTION__) in which the assertion triggered.
95 * @param line The line number of the assert() statement.
96 * @param exp The expression that failed (as a string).
97 */
98void _mondo_assert_fail(const char *file,
99                        const char *function, int line, const char *exp)
100{
101    static int ignoring_assertions = 0;
102    bool is_valid = TRUE;
103
104    log_it("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line,
105           function);
106    if (ignoring_assertions) {
107        log_it("Well, the user doesn't care...");
108        return;
109    }
110#ifndef _XWIN
111    if (!g_text_mode)
112        newtSuspend();
113#endif
114    printf("ASSERTION FAILED: `%s'\n", exp);
115    printf("\tat %s:%d in %s\n\n", file, line, function);
116    printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
117    do {
118        is_valid = TRUE;
119        switch (toupper(getchar())) {
120        case 'A':               // ignore (A)ll
121            ignoring_assertions = 1;
122            break;
123        case 'B':               // a(B)ort
124            signal(SIGABRT, SIG_DFL);   /* prevent SIGABRT handler from running */
125            raise(SIGABRT);
126            break;              /* "can't get here" */
127        case 'D':               // (D)ebug, aka asm("int 3")
128#ifdef __IA32__
129            __asm__ __volatile__("int $3"); // break to debugger
130#endif
131            break;
132        case 'E':               // (E)xit
133            fatal_error("Failed assertion -- see above for details");
134            break;              /* "can't get here" */
135        case 'I':               // (I)gnore
136            break;
137            /* These next two work as follows:
138               the `default' catches the user's invalid choice and says so;
139               the '\n' catches the newline on the end and prints the prompt again.
140             */
141        case '\n':
142            printf
143                ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
144            break;
145        default:
146            is_valid = FALSE;
147            printf("Invalid choice.\n");
148            break;
149        }
150    } while (!is_valid);
151
152    if (ignoring_assertions) {
153        log_it("Ignoring ALL assertions from now on.");
154    } else {
155        log_it("Ignoring assertion: %s", exp);
156    }
157
158    getchar();                  // skip \n
159
160#ifndef _XWIN
161    if (!g_text_mode)
162        newtResume();
163#endif
164}
165
166/**
167 * Clean's up users' KDE desktops.
168 * @bug Details about this function are unknown.
169 */
170void clean_up_KDE_desktop_if_necessary(void)
171{
172    char *tmp;
173
174    malloc_string(tmp);
175    strcpy(tmp,
176           "for i in `find /root /home -type d -name Desktop -maxdepth 2`; do \
177file=$i/.directory; if [ -f \"$file\" ] ; then mv -f $file $file.old ; \
178awk '{if (index($0, \"rootimagesmindi\")) { while (length($0)>2) { getline;} ; } \
179else { print $0;};}' $file.old  > $file ; fi ; done");
180    run_program_and_log_output(tmp, 5);
181    paranoid_free(tmp);
182}
183
184
185/**
186 * Locate mondoarchive's home directory. Searches in /usr/local/mondo, /usr/share/mondo,
187 * /usr/local/share/mondo, /opt, or if all else fails, search /usr.
188 *
189 * @param home_sz String to store the home directory ("" if it could not be found).
190 * @return 0 for success, nonzero for failure.
191 */
192int find_and_store_mondoarchives_home(char *home_sz)
193{
194    assert(home_sz != NULL);
195    strcpy(home_sz, MONDO_SHARE);
196    return (0);
197}
198
199
200char *get_architecture(void) {
201#ifdef __IA32__
202#   ifdef __X86_64__
203        return ("x86_64");
204#   else
205        return ("i386");
206#   endif
207#endif
208#ifdef __IA64__
209    return ("ia64");
210#endif
211    return ("unknown");
212}
213
214
215char *get_uname_m(void) {
216
217    struct utsname utsn;
218    char *tmp = NULL;
219
220    uname(&utsn);
221    mr_asprintf(tmp, "%s", utsn.machine);
222    return (tmp);
223}
224
225
226
227double get_kernel_version(void)
228{
229    char *p, tmp[200];
230    double d;
231#ifdef __FreeBSD__
232    // JOSH - FIXME :)
233    d = 5.2;                    // :-)
234#else
235    strcpy(tmp, call_program_and_get_last_line_of_output("uname -r"));
236    p = strchr(tmp, '.');
237    if (p) {
238        p = strchr(++p, '.');
239        if (p) {
240            while (*p) {
241                *p = *(p + 1);
242                p++;
243            }
244        }
245    }
246//  log_msg(1, "tmp = '%s'", tmp);
247    d = atof(tmp);
248#endif
249    log_msg(1, "g_kernel_version = %f", d);
250    return (d);
251}
252
253
254
255
256
257/**
258 * Get the current time.
259 * @return number of seconds since the epoch.
260 */
261long get_time()
262{
263    return (long) time((void *) 0);
264}
265
266
267
268
269
270
271
272/**
273 * Initialize a RAID volume structure, setting fields to zero. The
274 * actual hard drive is unaffected.
275 *
276 * @param raidrec The RAID volume structure to initialize.
277 * @note This function is system dependent.
278 */
279#ifdef __FreeBSD__
280void initialize_raidrec(struct vinum_volume *raidrec)
281{
282    int i, j;
283    raidrec->volname[0] = '\0';
284    raidrec->plexes = 0;
285    for (i = 0; i < 9; ++i) {
286        raidrec->plex[i].raidlevel = -1;
287        raidrec->plex[i].stripesize = 0;
288        raidrec->plex[i].subdisks = 0;
289        for (j = 0; j < 9; ++j) {
290            strcpy(raidrec->plex[i].sd[j].which_device, "");
291        }
292    }
293}
294#else
295void initialize_raidrec(struct raid_device_record *raidrec)
296{
297    assert(raidrec != NULL);
298    raidrec->raid_device[0] = '\0';
299    raidrec->raid_level = -9;
300    raidrec->persistent_superblock = 1;
301    raidrec->chunk_size = 64;
302    raidrec->parity = -1;
303    raidrec->data_disks.entries = 0;
304    raidrec->spare_disks.entries = 0;
305    raidrec->parity_disks.entries = 0;
306    raidrec->failed_disks.entries = 0;
307    raidrec->additional_vars.entries = 0;
308}
309#endif
310
311
312
313
314/**
315 * Insert modules that Mondo requires.
316 * Currently inserts @c msdos, @c vfat, and @c loop for Linux;
317 * @c msdosfs and @c ext2fs for FreeBSD.
318 */
319void insmod_crucial_modules(void)
320{
321#ifdef __FreeBSD__
322    system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
323    system("kldstat | grep ext2fs  || kldload ext2fs 2> /dev/null");
324#else
325    system("modprobe -a msdos vfat loop &> /dev/null");
326#endif
327}
328
329
330/**
331 * Log a trace message to the trace file.
332 * @bug This function seems orphaned. Please remove.
333 */
334void log_trace(char *o)
335{
336    /*@ pointers **************************************************** */
337    FILE *fout;
338
339    /*@ buffers ***************************************************** */
340    char output[MAX_STR_LEN];
341
342    /*@ int    ****************************************************** */
343    int i;
344
345    /*@ end vars *************************************************** */
346
347    if (o[0] == '\0') {
348        return;
349    }
350    strcpy(output, o);
351    i = (int) strlen(output);
352    if (i <= 0) {
353        return;
354    }
355    if (output[i - 1] < 32) {
356        output[i - 1] = '\0';
357    }
358    if (g_text_mode
359        /* && !strstr(last_line_of_file(MONDO_LOGFILE),output) */ ) {
360        printf("%s\n", output);
361    }
362
363    fout = fopen(MONDO_TRACEFILE, "a");
364    if (fout) {
365        fprintf(fout, "%s\n", output);
366        paranoid_fclose(fout);
367    } else {
368        log_OS_error("Cannot write to tracefile");
369    }
370}
371
372
373
374
375
376/**
377 * Finish configuring the backup information structure. Call this function
378 * to set the parameters that depend on those that can be given on the command
379 * line.
380 *
381 * @param bkpinfo The backup information structure. Fields modified/used:
382 * - Used: @c bkpinfo->backup_data
383 * - Used: @c bkpinfo->backup_media_type
384 * - Used: @c bkpinfo->cdrw_speed
385 * - Used: @c bkpinfo->compression_level
386 * - Used: @c bkpinfo->include_paths
387 * - Used: @c bkpinfo->prefix
388 * - Used: @c bkpinfo->isodir
389 * - Used: @c bkpinfo->manual_cd_tray
390 * - Used: @c bkpinfo->make_cd_use_lilo
391 * - Used: @c bkpinfo->media_device
392 * - Used: @c bkpinfo->nfs_mount
393 * - Used: @c bkpinfo->nonbootable_backup
394 * - Used: @c bkpinfo->scratchdir
395 * - Used: @c bkpinfo->tmpdir
396 * - Used: @c bkpinfo->use_lzo
397 * - Modified: @c bkpinfo->call_before_iso
398 * - Modified: @c bkpinfo->call_make_iso
399 * - Modified: @c bkpinfo->optimal_set_size
400 * - Modified: @c bkpinfo->zip_exe
401 * - Modified: @c bkpinfo->zip_suffix
402 *
403 * @return number of errors, or 0 for success.
404 * @note Also creates directories that are specified in the @c bkpinfo structure but
405 * do not exist.
406 */
407int post_param_configuration()
408{
409    char *extra_cdrom_params = NULL;
410    char *mondo_mkisofs_sz = NULL;
411    char *command = NULL;
412    char *mtpt;
413    char *hostname;
414    char *ip_address = NULL;
415    int retval = 0;
416    char *colon;
417    char *cdr_exe;
418    char *tmp = NULL;
419    char *p = NULL;
420    char call_before_iso_user = NULL;
421    char *iso_dev = NULL;
422    char *iso_mnt = NULL;
423    char *iso_tmp = NULL;
424    char *iso_path = NULL;
425
426    assert(bkpinfo != NULL);
427
428    if (!bkpinfo->tmpdir) {
429        fatal_error("Tmpdir set to NULL !");
430    }
431
432    malloc_string(mtpt);
433    malloc_string(hostname);
434    malloc_string(cdr_exe);
435    bkpinfo->optimal_set_size =
436        (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 16 : 16) *
437        1024;
438
439    if (strlen(bkpinfo->tmpdir) < 2) {
440        log_it("tmpdir is blank/missing");
441        retval++;
442    }
443
444    log_msg(1, "Foo");
445    if (bkpinfo->backup_media_type == tape) {
446        log_msg(1, "Bar");
447        if (bkpinfo->media_device == NULL) {
448            return(1);
449        }
450        mr_asprintf(tmp, "mt -f %s status", bkpinfo->media_device);
451        log_msg(1, "tmp = '%s'", tmp);
452        if (run_program_and_log_output(tmp, 3)) {
453            mr_free(tmp);
454            fatal_error
455                ("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.");
456        }
457        mr_free(tmp);
458    }
459    if (bkpinfo->scratchdir) {
460        make_hole_for_dir(bkpinfo->scratchdir);
461        chmod(bkpinfo->scratchdir, 0700);
462    } else {
463        fatal_error("Scratchdir set to NULL !");
464    }
465    if (bkpinfo->backup_media_type == iso)
466        make_hole_for_dir(bkpinfo->isodir);
467
468    run_program_and_log_output("uname -a", 5);
469    run_program_and_log_output("cat /etc/*-release", 5);
470    run_program_and_log_output("cat /etc/*issue*", 5);
471#ifdef __FreeBSD__
472#else
473    run_program_and_log_output("cat /proc/cpuinfo", 5);
474    run_program_and_log_output
475        ("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc",
476         5);
477#endif
478
479    if (bkpinfo->use_lzo) {
480        mr_asprintf(bkpinfo->zip_exe, "lzop");
481        mr_asprintf(bkpinfo->zip_suffix, "lzo");
482    } else if (bkpinfo->use_gzip) {
483        mr_asprintf(bkpinfo->zip_exe, "gzip");
484        mr_asprintf(bkpinfo->zip_suffix, "gz");
485    } else if (bkpinfo->compression_level != 0) {
486        mr_asprintf(bkpinfo->zip_exe, "bzip2");
487        mr_asprintf(bkpinfo->zip_suffix, "bz2");
488    } else {
489        mr_asprintf(bkpinfo->zip_exe, "none");
490        mr_asprintf(bkpinfo->zip_suffix, "");
491    }
492
493// DVD
494
495    if (bkpinfo->backup_media_type == dvd) {
496        if (find_home_of_exe("growisofs")) {
497            strcpy(cdr_exe, "growisofs");
498        }                       // unlikely to be used
499        else {
500            fatal_error("Please install growisofs.");
501        }
502        if (bkpinfo->nonbootable_backup) {
503            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
504        } else if
505#ifdef __FreeBSD__
506            (TRUE)
507#else
508            (bkpinfo->make_cd_use_lilo)
509#endif
510#ifdef __IA64__
511    {
512        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
513    }
514#else
515    {
516        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
517    }
518#endif
519        else
520        {
521            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
522        }
523        if (bkpinfo->manual_cd_tray) {
524            paranoid_free(mondo_mkisofs_sz);
525            fatal_error("Manual CD tray + DVD not supported yet.");
526            // -m isn't supported by growisofs, BTW...
527        } else {
528            if (bkpinfo->media_device == NULL) {
529                return(1);
530            }
531            mr_free(bkpinfo->call_make_iso);
532            mr_asprintf(bkpinfo->call_make_iso, "%s %s -Z %s . 2>> _ERR_", mondo_mkisofs_sz, "", bkpinfo->media_device);
533            paranoid_free(mondo_mkisofs_sz);
534        }
535        if (getenv ("SUDO_COMMAND")) {
536            mr_asprintf(command, "strings `which growisofs` | grep -c SUDO_COMMAND");
537            if (!strcmp(call_program_and_get_last_line_of_output(command), "1")) {
538                mr_free(command);
539                popup_and_OK("Fatal Error: Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
540                fatal_error("Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
541            }       
542            mr_free(command);
543        }
544        log_msg(2, "call_make_iso (DVD res) is ... %s", bkpinfo->call_make_iso);
545    }                           // end of DVD code
546
547// CD-R or CD-RW
548    if (bkpinfo->backup_media_type == cdrw
549        || bkpinfo->backup_media_type == cdr) {
550        if (!bkpinfo->manual_cd_tray) {
551            mr_asprintf(extra_cdrom_params, "-waiti ");
552        }
553        if (bkpinfo->backup_media_type == cdrw) {
554            mr_asprintf(extra_cdrom_params, "blank=fast ");
555        }
556        if (find_home_of_exe("cdrecord")) {
557            strcpy(cdr_exe, "cdrecord");
558        } else if (find_home_of_exe("dvdrecord")) {
559            strcpy(cdr_exe, "dvdrecord");
560        } else {
561            fatal_error("Please install either cdrecord or dvdrecord.");
562        }
563        if (bkpinfo->nonbootable_backup) {
564            mr_asprintf(mondo_mkisofs_sz, MONDO_MKISOFS_NONBOOT);
565        } else if
566#ifdef __FreeBSD__
567            (TRUE)
568#else
569            (bkpinfo->make_cd_use_lilo)
570#endif
571#ifdef __IA64__
572    {
573        mr_asprintf(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_ELILO);
574    }
575#else
576    {
577        mr_asprintf(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_LILO);
578    }
579#endif
580        else
581        {
582            mr_asprintf(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_SYSLINUX);
583        }
584
585        mr_free(bkpinfo->call_make_iso);
586        if (bkpinfo->manual_cd_tray) {
587            if (bkpinfo->call_before_iso == NULL) {
588                mr_asprintf(bkpinfo->call_before_iso, "%s -o %s/"MONDO_TMPISOS" . 2>> _ERR_", mondo_mkisofs_sz, bkpinfo->tmpdir);
589            } else {
590                mr_asprintf(call_before_iso_user, "%s", bkpinfo->call_before_iso);
591                mr_free(bkpinfo->call_before_iso);
592                mr_asprintf(bkpinfo->call_before_iso, "( %s -o %s/"MONDO_TMPISOS" . 2>> _ERR_ ; %s )", mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
593                mr_free(call_before_iso_user);
594            }
595            log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
596            if (bkpinfo->media_device == NULL) {
597                return(1);
598            }
599            mr_asprintf(bkpinfo->call_make_iso, "%s %s -v %s fs=4m dev=%s speed=%d %s/"MONDO_TMPISOS, cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject", extra_cdrom_params, bkpinfo->media_device, bkpinfo->cdrw_speed, bkpinfo->tmpdir);
600        } else {
601            mr_asprintf(bkpinfo->call_make_iso, "%s . 2>> _ERR_ | %s %s %s fs=4m dev=%s speed=%d -", mondo_mkisofs_sz, cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject", extra_cdrom_params, bkpinfo->media_device, bkpinfo->cdrw_speed);
602        }
603        paranoid_free(mondo_mkisofs_sz);
604        paranoid_free(extra_cdrom_params);
605    }                           // end of CD code
606
607    if (bkpinfo->backup_media_type == iso) {
608
609/* Patch by Conor Daly <conor.daly@met.ie>
610 * 23-june-2004
611 * Break up isodir into iso_mnt and iso_path
612 * These will be used along with iso-dev at restore time
613 * to locate the ISOs where ever they're mounted
614 */
615
616        log_it("isodir = %s", bkpinfo->isodir);
617        mr_asprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1", bkpinfo->isodir);
618        log_it("command = %s", command);
619        log_it("res of it = %s", call_program_and_get_last_line_of_output(command));
620        mr_asprintf(iso_dev, "%s", call_program_and_get_last_line_of_output(command));
621        mr_asprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
622        write_one_liner_data_file(tmp, call_program_and_get_last_line_of_output(command));
623        mr_free(tmp);
624        mr_free(command);
625
626        mr_asprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3", iso_dev);
627        mr_free(iso_dev);
628
629        log_it("command = %s", command);
630        log_it("res of it = %s", call_program_and_get_last_line_of_output(command));
631        mr_asprintf(iso_mnt, "%s", call_program_and_get_last_line_of_output(command));
632        mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
633        write_one_liner_data_file(tmp, call_program_and_get_last_line_of_output(command));
634        mr_free(tmp);
635        mr_free(command);
636
637        log_it("isomnt: %s, %d", iso_mnt, strlen(iso_mnt));
638        mr_asprintf(iso_tmp, "%s", bkpinfo->isodir);
639        if (strlen(iso_tmp) < strlen(iso_mnt)) {
640            mr_asprintf(iso_path, "%s", "");
641        } else {
642            mr_asprintf(iso_path, "%s", iso_tmp + strlen(iso_mnt));
643        }
644        mr_free(iso_tmp);
645
646        mr_asprintf(tmp, "%s/ISODIR", bkpinfo->tmpdir);
647        write_one_liner_data_file(tmp, iso_path);
648        mr_free(tmp);
649
650        log_it("isodir: %s", iso_path);
651        mr_free(iso_path);
652
653        mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
654        write_one_liner_data_file(tmp, bkpinfo->prefix);
655        mr_free(tmp);
656
657        log_it("iso-prefix: %s",  bkpinfo->prefix);
658
659/* End patch */
660    }                           // end of iso code
661
662    if (bkpinfo->backup_media_type == nfs) {
663        if (bkpinfo->nfs_mount) {
664            strcpy(hostname, bkpinfo->nfs_mount);
665        } else {
666            log_it("nfs_mount is NULL");
667            retval++;
668            strcpy(hostname, "");
669        }
670        colon = strchr(hostname, ':');
671        if (!colon) {
672            log_it("nfs mount doesn't have a colon in it");
673            retval++;
674        } else {
675            struct hostent *hent;
676
677            *colon = '\0';
678            hent = gethostbyname(hostname);
679            if (!hent) {
680                log_it("Can't resolve NFS mount (%s): %s", hostname, hstrerror(h_errno));
681                retval++;
682            } else {
683                mr_asprintf(ip_address, "%s", inet_ntoa((struct in_addr) *((struct in_addr *) hent->h_addr)));
684                mr_strcat(ip_address, strchr(bkpinfo->nfs_mount, ':'));
685                mr_free(bkpinfo->nfs_mount);
686                bkpinfo->nfs_mount = ip_address;
687            }
688        }
689        store_nfs_config();
690    }
691
692    log_it("Finished processing incoming params");
693    if (retval) {
694        fprintf(stderr, "Type 'man mondoarchive' for help.\n");
695    }
696    if (bkpinfo->include_paths == NULL) {
697        mr_asprintf(p, "/");
698        bkpinfo->include_paths = p;
699    }
700    g_backup_media_type = bkpinfo->backup_media_type;
701    paranoid_free(mtpt);
702    paranoid_free(hostname);
703    paranoid_free(cdr_exe);
704    return (retval);
705}
706
707
708
709/**
710 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
711 * Seeds the random-number generator, loads important modules, checks the sanity
712 * of the user's Linux distribution, and deletes logfile.
713 * @param bkpinfo The backup information structure. Will be initialized.
714 * @return number of errors (0 for success)
715 */
716int pre_param_configuration()
717{
718    int res = 0;
719    char *tmp = NULL;
720
721    make_hole_for_dir(MNT_CDROM);
722    assert(bkpinfo != NULL);
723    srandom((unsigned long) (time(NULL)));
724    insmod_crucial_modules();
725    if (bkpinfo->disaster_recovery) {
726        if (!does_nonMS_partition_exist()) {
727            fatal_error
728                ("I am in disaster recovery mode\nPlease don't run mondoarchive.");
729        }
730    }
731
732    unlink(MONDO_TRACEFILE);
733    mr_asprintf(tmp,"rm -Rf %s/changed.files*",MONDO_CACHE);
734    run_program_and_log_output(tmp, FALSE);
735    paranoid_free(tmp);
736    if (find_and_store_mondoarchives_home(g_mondo_home)) {
737        fprintf(stderr,
738                "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");
739        res++;
740        return (res);
741    }
742    res += some_basic_system_sanity_checks();
743    if (res) {
744        log_it("Your distribution did not pass Mondo's sanity test.");
745    }
746    g_current_media_number = 1;
747    return (res);
748}
749
750void setup_tmpdir(char *path) {
751
752    char *tmp = NULL;
753    char *p = NULL;
754
755    if ((bkpinfo->tmpdir != NULL) && (strstr(bkpinfo->tmpdir,"mondo.tmp.") != NULL)) {
756        /* purging a potential old tmpdir */
757        log_it("Purging old tmpdir %s", bkpinfo->tmpdir);
758        mr_asprintf(tmp,"rm -Rf %s",bkpinfo->tmpdir);
759        mr_free(bkpinfo->tmpdir);
760        (void)system(tmp);
761        mr_free(tmp);
762    }
763
764    if (path != NULL) {
765        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", path);
766    } else if (getenv("TMPDIR")) {
767        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("TMPDIR"));
768    } else if (getenv("TMP")) {
769        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("TMP"));
770    } else {
771        mr_asprintf(tmp, "/tmp/mondo.tmp.XXXXXX");
772    }
773    p = mkdtemp(tmp);
774    if (p == NULL) {
775        log_it("Failed to create global tmp directory %s for Mondo.",tmp);
776        mr_free(tmp);
777        finish(-1);
778    }
779
780    bkpinfo->tmpdir = p;
781    log_it("bkpinfo->tmpdir is being set to %s", bkpinfo->tmpdir);
782}
783
784/* Free all memory allocated into bkpinfo */
785void mr_free_bkpinfo() {
786
787    mr_free(bkpinfo->media_device);
788    mr_free(bkpinfo->boot_device);
789    mr_free(bkpinfo->zip_exe);
790    mr_free(bkpinfo->zip_suffix);
791    mr_free(bkpinfo->image_devs);
792    mr_free(bkpinfo->isodir);
793    mr_free(bkpinfo->prefix);
794    mr_free(bkpinfo->scratchdir);
795    mr_free(bkpinfo->tmpdir);
796    mr_free(bkpinfo->include_paths);
797    mr_free(bkpinfo->exclude_paths);
798    mr_free(bkpinfo->restore_path);
799    mr_free(bkpinfo->call_before_iso);
800    mr_free(bkpinfo->call_make_iso);
801    mr_free(bkpinfo->call_burn_iso);
802    mr_free(bkpinfo->call_after_iso);
803    mr_free(bkpinfo->kernel_path);
804    mr_free(bkpinfo->nfs_mount);
805    mr_free(bkpinfo->nfs_remote_dir);
806    mr_free(bkpinfo->nfs_user);
807    mr_free(bkpinfo->postnuke_tarball);
808
809    /* Then free the structure */
810    mr_free(bkpinfo);
811}
812
813/**
814 * Reset all fields of the backup information structure to a sensible default.
815 * @param bkpinfo The @c bkpinfo to reset.
816 */
817void init_bkpinfo()
818{
819    int i;
820    log_msg(1, "Hi");
821
822    /* Initialized in same order as in the structure declaration to detect errors more easily */
823    bkpinfo->media_device = NULL;
824    for (i = 0; i <= MAX_NOOF_MEDIA; i++) {
825        bkpinfo->media_size[i] = -1;
826    }
827    bkpinfo->boot_loader = '\0';
828    bkpinfo->boot_device = NULL;
829    bkpinfo->zip_exe = NULL;
830    bkpinfo->zip_suffix = NULL;
831    bkpinfo->image_devs = NULL;
832    bkpinfo->compression_level = 3;
833    bkpinfo->use_lzo = FALSE;
834    bkpinfo->use_gzip = FALSE;
835    bkpinfo->verify_data = FALSE;
836    bkpinfo->backup_data = FALSE;
837    bkpinfo->restore_data = FALSE;
838    bkpinfo->use_star = FALSE;
839    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
840    bkpinfo->disaster_recovery = (am_I_in_disaster_recovery_mode()? TRUE : FALSE);
841    if (bkpinfo->disaster_recovery) {
842        mr_asprintf(bkpinfo->isodir, "%s", "/");
843    } else {
844        mr_asprintf(bkpinfo->isodir, "%s", MONDO_CACHE);
845    }
846    mr_asprintf(bkpinfo->prefix, "%s", STD_PREFIX);
847    bkpinfo->scratchdir = NULL;     // Really setup after
848    bkpinfo->tmpdir = NULL;         // Really setup after
849    bkpinfo->optimal_set_size = 0;
850    bkpinfo->backup_media_type = none;
851    bkpinfo->make_filelist = TRUE;  // unless -J supplied to mondoarchive
852    bkpinfo->include_paths = NULL;
853    bkpinfo->exclude_paths = NULL;
854    bkpinfo->restore_path = NULL;
855    bkpinfo->call_before_iso = NULL;
856    bkpinfo->call_make_iso = NULL;
857    bkpinfo->call_burn_iso = NULL;
858    bkpinfo->call_after_iso = NULL;
859    bkpinfo->kernel_path = NULL;
860    bkpinfo->nfs_mount = NULL;
861    bkpinfo->nfs_remote_dir = NULL;
862    bkpinfo->nfs_user = NULL;
863    bkpinfo->postnuke_tarball = NULL;
864    bkpinfo->wipe_media_first = FALSE;
865    bkpinfo->differential = 0;
866    bkpinfo->please_dont_eject = FALSE;
867    bkpinfo->cdrw_speed = 0;
868    bkpinfo->manual_cd_tray = FALSE;
869    bkpinfo->nonbootable_backup = FALSE;
870    bkpinfo->make_cd_use_lilo = FALSE;
871    bkpinfo->use_obdr = FALSE;
872    bkpinfo->restore_mode = interactive;
873
874    setup_tmpdir(NULL);
875    sensibly_set_scratchdir();
876}
877
878
879
880
881/**
882 * Get the remaining free space (in MB) on @p partition.
883 * @param partition The partition to check free space on (either a device or a mountpoint).
884 * @return The free space on @p partition, in MB.
885 */
886long free_space_on_given_partition(char *partition)
887{
888    char *out_sz = NULL;
889    char *command = NULL;
890    long res;
891
892    assert_string_is_neither_NULL_nor_zerolength(partition);
893
894    mr_asprintf(command, "df -m -P %s 1> /dev/null 2> /dev/null", partition);
895    if (system(command)) {
896        mr_free(command);
897        return (-1);
898    }                           // partition does not exist
899    mr_free(command);
900
901    mr_asprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4", partition);
902    mr_asprintf(out_sz, "%s", call_program_and_get_last_line_of_output(command));
903    mr_free(command);
904
905    if (strlen(out_sz) == 0) {
906        mr_free(out_sz);
907        return (-1);
908    }                           // error within df, probably
909    res = atol(out_sz);
910    mr_free(out_sz);
911    return (res);
912}
913
914
915
916/**
917 * Check the user's system for sanity. Checks performed:
918 * - make sure user has enough RAM (32mb required, 64mb recommended)
919 * - make sure user has enough free space in @c /
920 * - check kernel for ramdisk support
921 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
922 * - make sure CD-ROM is unmounted
923 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
924 *
925 * @return number of problems with the user's setup (0 for success)
926 */
927int some_basic_system_sanity_checks()
928{
929
930    /*@ buffers ************ */
931    char *tmp = NULL;
932
933    /*@ int's *************** */
934    int retval = 0;
935
936    mvaddstr_and_log_it(g_currentY, 0,
937                        "Checking sanity of your Linux distribution");
938#ifndef __FreeBSD__
939    if (system("which mkfs.vfat 2> /dev/null 1> /dev/null")
940        && !system("which mkfs.msdos 2> /dev/null 1> /dev/null")) {
941        log_it
942            ("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
943        run_program_and_log_output
944            ("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
945    }
946    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output ("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
947    if (atol(tmp) < 35000) {
948        retval++;
949        log_to_screen("You must have at least 32MB of RAM to use Mondo.");
950    }
951    if (atol(tmp) < 66000) {
952        log_to_screen("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
953    }
954    mr_free(tmp);
955#endif
956
957    if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
958        retval++;
959        log_to_screen
960            ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
961        fatal_error
962            ("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. :)");
963    }
964#ifndef __FreeBSD__
965    if (run_program_and_log_output
966        ("grep ramdisk /proc/devices", FALSE)) {
967        /* Some SuSE have ramdisk as modules, so insert it first, then test again */
968        run_program_and_log_output("modprobe brd 2> /dev/null > /dev/null",FALSE);
969        if (run_program_and_log_output
970            ("grep ramdisk /proc/devices", FALSE)) {
971            if (!ask_me_yes_or_no
972                ("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?"))
973            {
974                //          retval++;
975                log_to_screen
976                    ("It looks as if your kernel lacks ramdisk and initrd support.");
977                log_to_screen
978                    ("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
979            }
980        }
981    }
982#endif
983    retval += whine_if_not_found(MKE2FS_OR_NEWFS);
984    retval += whine_if_not_found("mkisofs");
985    if (system("which dvdrecord > /dev/null 2> /dev/null")) {
986        retval += whine_if_not_found("cdrecord");
987    }
988    retval += whine_if_not_found("bzip2");
989    retval += whine_if_not_found("gzip");
990    retval += whine_if_not_found("awk");
991    retval += whine_if_not_found("md5sum");
992    retval += whine_if_not_found("strings");
993    retval += whine_if_not_found("mindi");
994    retval += whine_if_not_found("buffer");
995
996    // abort if Windows partition but no ms-sys and parted
997    if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -vE \"/dev/fd|nexdisk\"", 0)) {
998        log_to_screen("I think you have a Windows 9x partition.");
999        retval += whine_if_not_found("parted");
1000    }
1001
1002    if (!find_home_of_exe("cmp")) {
1003        if (!find_home_of_exe("true")) {
1004            whine_if_not_found("cmp");
1005        } else {
1006            log_to_screen
1007                ("Your system lacks the 'cmp' binary. I'll create a dummy cmp for you.");
1008            if (run_program_and_log_output
1009                ("cp -f `which true` /usr/bin/cmp", 0)) {
1010                fatal_error("Failed to create dummy 'cmp' file.");
1011            }
1012        }
1013    }
1014    run_program_and_log_output
1015        ("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
1016    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("mount | grep -E \"cdr(om|w)\""));
1017    if (strcmp("", tmp)) {
1018        if (strstr(tmp, "autofs")) {
1019            log_to_screen
1020                ("Your CD-ROM is mounted via autofs. I therefore cannot tell");
1021            log_to_screen
1022                ("if a CD actually is inserted. If a CD is inserted, please");
1023            log_to_screen("eject it. Thank you.");
1024            log_it
1025                ("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
1026        } else
1027            if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
1028            retval++;
1029            mr_free(tmp);
1030            fatal_error("Your CD-ROM drive is mounted. Please unmount it.");
1031        }
1032    }
1033    mr_free(tmp);
1034
1035    run_program_and_log_output("cat /etc/fstab", 5);
1036#ifdef __FreeBSD__
1037    run_program_and_log_output("vinum printconfig", 5);
1038#else
1039    run_program_and_log_output("cat /etc/raidtab", 5);
1040#endif
1041
1042    if (run_program_and_log_output("mindi -V", 1)) {
1043        log_to_screen("Could not ascertain mindi's version number.");
1044        log_to_screen
1045            ("You have not installed Mondo and/or Mindi properly.");
1046        log_to_screen("Please uninstall and reinstall them both.");
1047        fatal_error("Please reinstall Mondo and Mindi.");
1048    }
1049    mr_asprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test", bkpinfo->tmpdir);
1050    if (run_program_and_log_output(tmp, 5)) {
1051        mr_free(tmp);
1052        mr_asprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test failed for some reason.", bkpinfo->tmpdir);
1053        log_to_screen(tmp);
1054        log_to_screen
1055            ("Please run that command by hand and examine /var/log/mindi.log");
1056        log_to_screen
1057            ("for more information. Perhaps your /etc/fstab file is insane.");
1058        log_to_screen
1059            ("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
1060        retval++;
1061    }
1062    mr_free(tmp);
1063
1064    if (!run_program_and_log_output("parted2fdisk -l | grep -i raid", 1)
1065        && !does_file_exist("/etc/raidtab")) {
1066        log_to_screen
1067            ("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1068        create_raidtab_from_mdstat("/etc/raidtab");
1069    }
1070
1071    if (retval) {
1072        mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1073    } else {
1074        mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1075    }
1076    return (retval);
1077}
1078
1079/**
1080 * Retrieve the line containing @p label from the config file.
1081 * @param config_file The file to read from, usually @c /tmp/mondo-restore.cfg.
1082 * @param label What to read from the file.
1083 * @param value Where to put it.
1084 * @return 0 for success, 1 for failure.
1085 */
1086char *read_cfg_var(char *config_file, char *label)
1087{
1088    /*@ buffer ****************************************************** */
1089    char *command = NULL;
1090    char *value = NULL;
1091
1092    /*@ end vars *************************************************** */
1093
1094    assert_string_is_neither_NULL_nor_zerolength(config_file);
1095    assert_string_is_neither_NULL_nor_zerolength(label);
1096    if (!does_file_exist(config_file)) {
1097        log_to_screen("(read_cfg_var) Cannot find %s config file", config_file);
1098        return (NULL);
1099        /* BERLIOS: not sure the sage of this one ?
1100    } else if ((value != NULL) && (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))) {
1101        log_msg(2, "FYI, I can't read new value for %s - already got %s", label, value);
1102        return (0);
1103        */
1104    } else {
1105        mr_asprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5", label, config_file);
1106        mr_asprintf(value, "%s", call_program_and_get_last_line_of_output(command));
1107        mr_free(command);
1108
1109        if (strlen(value) == 0) {
1110            return (NULL);
1111        } else {
1112            return (value);
1113        }
1114    }
1115}
1116
1117
1118
1119/**
1120 * Remount @c supermount if it was unmounted earlier.
1121 */
1122void remount_supermounts_if_necessary()
1123{
1124    if (g_remount_cdrom_at_end) {
1125        run_program_and_log_output("mount " MNT_CDROM, FALSE);
1126    }
1127    if (g_remount_floppy_at_end) {
1128        run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1129    }
1130}
1131
1132/**
1133 * Unmount @c supermount if it's mounted.
1134 */
1135void unmount_supermounts_if_necessary()
1136{
1137    if (run_program_and_log_output
1138        ("mount | grep cdrom | grep super", FALSE) == 0) {
1139        g_remount_cdrom_at_end = TRUE;
1140        run_program_and_log_output("umount " MNT_CDROM, FALSE);
1141    }
1142    if (run_program_and_log_output
1143        ("mount | grep floppy | grep super", FALSE) == 0) {
1144        g_remount_floppy_at_end = TRUE;
1145        run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1146    }
1147}
1148
1149/**
1150 * Whether we had to stop autofs (if so, restart it at end).
1151 */
1152bool g_autofs_stopped = FALSE;
1153
1154/**
1155 * Path to the autofs initscript ("" if none exists).
1156 */
1157char g_autofs_exe[MAX_STR_LEN];
1158
1159/**
1160 * Autofs initscript in Xandros Linux distribution.
1161 */
1162#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1163
1164/**
1165 * Autofs initscript in most Linux distributions.
1166 */
1167#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1168
1169/**
1170 * If autofs is mounted, stop it (restart at end).
1171 */
1172void stop_autofs_if_necessary()
1173{
1174    char *tmp = NULL;
1175
1176    g_autofs_exe[0] = '\0';
1177    if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1178        strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1179    } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1180        strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1181    }
1182
1183    if (!g_autofs_exe[0]) {
1184        log_msg(3, "No autofs detected.");
1185    } else {
1186        log_msg(3, "%s --- autofs detected", g_autofs_exe);
1187        // FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1188        mr_asprintf(tmp, "%s stop", g_autofs_exe);
1189        if (run_program_and_log_output(tmp, 2)) {
1190            log_it("Failed to stop autofs - I assume it wasn't running");
1191        } else {
1192            g_autofs_stopped = TRUE;
1193            log_it("Stopped autofs OK");
1194        }
1195        mr_free(tmp);
1196    }
1197}
1198
1199/**
1200 * If autofs was stopped earlier, restart it.
1201 */
1202void restart_autofs_if_necessary()
1203{
1204    char *tmp = NULL;
1205
1206    if (!g_autofs_stopped || !g_autofs_exe[0]) {
1207        log_msg(3, "No autofs detected.");
1208        return;
1209    }
1210    mr_asprintf(tmp, "%s start", g_autofs_exe);
1211    if (run_program_and_log_output(tmp, 2)) {
1212        log_it("Failed to start autofs");
1213    } else {
1214        g_autofs_stopped = FALSE;
1215        log_it("Started autofs OK");
1216    }
1217    mr_free(tmp);
1218}
1219
1220
1221/**
1222 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1223 */
1224void mount_boot_if_necessary() {
1225    char *tmp = NULL;
1226    char *command = NULL;
1227
1228    log_msg(1, "Started sub");
1229    log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1230    g_boot_mountpt[0] = '\0';
1231    log_msg(4, "Done. Great. Seeting command to something");
1232    mr_asprintf(command, "%s", "grep -v \":\" /etc/fstab | grep -vE '^#.*$' | grep -E \"[   ]/boot[     ]\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1233    log_msg(4, "Cool. Command = '%s'", command);
1234    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1235    mr_free(command);
1236
1237    log_msg(4, "tmp = '%s'", tmp);
1238    log_it("/boot is at %s according to /etc/fstab", tmp);
1239    mr_asprintf(command, "mount | grep -Ew '/boot'");
1240    mr_free(tmp);
1241    mr_asprintf(tmp, call_program_and_get_last_line_of_output(command));
1242    mr_free(command);
1243
1244    if (!strcmp(tmp,"")) {
1245        if ((strstr(tmp, "LABEL=") || strstr(tmp,"UUID="))) {
1246            if (!run_program_and_log_output("mount /boot", 5)) {
1247                strcpy(g_boot_mountpt, "/boot");
1248                log_msg(1, "Mounted /boot");
1249            } else {
1250                log_it("...ignored cos it's a label or uuid :-)");
1251            }
1252        } else {
1253            mr_asprintf(command, "mount | grep -E '^%s'", tmp);
1254            log_msg(3, "command = %s", command);
1255            if (run_program_and_log_output(command, 5)) {
1256                strcpy(g_boot_mountpt, tmp);
1257                mr_free(tmp);
1258                log_it("%s (your /boot partition) is not mounted. I'll mount it before backing up", g_boot_mountpt);
1259
1260                mr_asprintf(tmp, "mount %s", g_boot_mountpt);
1261                if (run_program_and_log_output(tmp, 5)) {
1262                    g_boot_mountpt[0] = '\0';
1263                    log_msg(1, "Plan B");
1264                    if (!run_program_and_log_output("mount /boot", 5)) {
1265                        strcpy(g_boot_mountpt, "/boot");
1266                        log_msg(1, "Plan B worked");
1267                    } else {
1268                        log_msg(1,
1269                            "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1270                    }
1271                }
1272            }
1273            mr_free(command);
1274        }
1275    }
1276    mr_free(tmp);
1277    log_msg(1, "Ended sub");
1278}
1279
1280
1281/**
1282 * If we mounted /boot earlier, unmount it.
1283 */
1284void unmount_boot_if_necessary()
1285{
1286    char *tmp = NULL;
1287
1288    log_msg(3, "starting");
1289    if (g_boot_mountpt[0]) {
1290        mr_asprintf(tmp, "umount %s", g_boot_mountpt);
1291        if (run_program_and_log_output(tmp, 5)) {
1292            log_it("WARNING - unable to unmount /boot");
1293        }
1294        mr_free(tmp);
1295    }
1296    log_msg(3, "leaving");
1297}
1298
1299
1300
1301/**
1302 * Write a line to a configuration file. Writes a line of the form,
1303 * @c label @c value.
1304 * @param config_file The file to write to. Usually @c mondo-restore.cfg.
1305 * @param label What to call this bit of data you're writing.
1306 * @param value The bit of data you're writing.
1307 * @return 0 for success, 1 for failure.
1308 */
1309int write_cfg_var(char *config_file, char *label, char *value)
1310{
1311    /*@ buffers ***************************************************** */
1312    char *command = NULL;
1313    char *tempfile = NULL;
1314
1315
1316    /*@ end vars *************************************************** */
1317    assert_string_is_neither_NULL_nor_zerolength(config_file);
1318    assert_string_is_neither_NULL_nor_zerolength(label);
1319    assert(value != NULL);
1320    if (!does_file_exist(config_file)) {
1321        log_to_screen("(write_cfg_file) Cannot find %s config file", config_file);
1322        return (1);
1323    }
1324    mr_asprintf(tempfile, "%s/mojo-jojo.blah", bkpinfo->tmpdir);
1325    if (does_file_exist(config_file)) {
1326        mr_asprintf(command, "grep -vE '^%s .*$' %s > %s", label, config_file, tempfile);
1327        paranoid_system(command);
1328        mr_free(command);
1329    }
1330    mr_asprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1331    paranoid_system(command);
1332    mr_free(command);
1333
1334    mr_asprintf(command, "mv -f %s %s", tempfile, config_file);
1335    paranoid_system(command);
1336    mr_free(command);
1337    unlink(tempfile);
1338    mr_free(tempfile);
1339    return (0);
1340}
1341
1342
1343/**
1344 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1345 * information to the logfile.
1346 */
1347void standard_log_debug_msg(int debug_level, const char *szFile,
1348                            const char *szFunction, int nLine,
1349                            const char *fmt, ...)
1350{
1351    va_list args;
1352    int i;
1353    static int depth = 0;
1354    FILE *fout;
1355
1356    if (depth > 5) {
1357        depth--;
1358        return;
1359    }
1360    depth++;
1361
1362    if (debug_level <= g_loglevel) {
1363        if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1364            return;
1365        }
1366
1367        // add tabs to distinguish log levels
1368        if (debug_level > 0) {
1369            for (i = 1; i < debug_level; i++)
1370                fprintf(fout, "\t");
1371            if (getpid() == g_main_pid)
1372                fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction, nLine);
1373            else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1374                fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction, nLine);
1375            else
1376                fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile, szFunction, nLine);
1377        }
1378        va_start(args, fmt);
1379        vfprintf(fout, fmt, args);
1380        va_end(args);
1381
1382        // do not slow down the progran if standard debug level
1383        // must be enabled: if no flush, the log won't be up-to-date if there
1384        // is a segfault
1385        //if (g_dwDebugLevel != 1)
1386
1387        fprintf(fout, "\n");
1388        paranoid_fclose(fout);
1389    }
1390    depth--;
1391}
1392
1393/**
1394 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1395 */
1396void (*log_debug_msg) (int, const char *, const char *, int, const char *,
1397                       ...) = standard_log_debug_msg;
1398
1399
1400/**
1401 * Allocate or free important globals, depending on @p mal.
1402 * @param mal If TRUE, malloc; if FALSE, free.
1403 */
1404void do_libmondo_global_strings_thing(int mal)
1405{
1406    if (mal) {
1407        malloc_string(g_boot_mountpt);
1408        malloc_string(g_mondo_home);
1409        malloc_string(g_magicdev_command);
1410    } else {
1411        paranoid_free(g_boot_mountpt);
1412        paranoid_free(g_mondo_home);
1413        paranoid_free(g_magicdev_command);
1414
1415        mr_free(g_serial_string);
1416    }
1417}
1418
1419/**
1420 * Allocate important globals.
1421 * @see do_libmondo_global_strings_thing
1422 */
1423void malloc_libmondo_global_strings(void)
1424{
1425    do_libmondo_global_strings_thing(1);
1426}
1427
1428/**
1429 * Free important globals.
1430 * @see do_libmondo_global_strings_thing
1431 */
1432void free_libmondo_global_strings(void)
1433{
1434    do_libmondo_global_strings_thing(0);
1435}
1436
1437
1438
1439/**
1440 * Stop @c magicdev if it's running.
1441 * The command used to start it is saved in @p g_magicdev_command.
1442 */
1443void stop_magicdev_if_necessary()
1444{
1445    strcpy(g_magicdev_command,
1446           call_program_and_get_last_line_of_output
1447           ("ps ax | grep -w magicdev | grep -v grep | tr -s '\t' ' '| cut -d' ' -f6-99"));
1448    if (g_magicdev_command[0]) {
1449        log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1450        paranoid_system("killall magicdev");
1451    }
1452}
1453
1454
1455/**
1456 * Restart magicdev if it was stopped.
1457 */
1458void restart_magicdev_if_necessary()
1459{
1460    char *tmp = NULL;
1461
1462    if (g_magicdev_command && g_magicdev_command[0]) {
1463        mr_asprintf(tmp, "%s &", g_magicdev_command);
1464        paranoid_system(tmp);
1465        mr_free(tmp);
1466    }
1467}
1468
1469/* @} - end of utilityGroup */
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