source: MondoRescue/branches/3.2/mondo/src/common/libmondo-tools.c @ 3238

Last change on this file since 3238 was 3238, checked in by Bruno Cornec, 7 years ago
  • Add "%s" in 2 mr_asprintf usages toavoid any problem (quality report)
  • Property svn:keywords set to Id
File size: 39.6 KB
Line 
1/*
2   $Id: libmondo-tools.c 3238 2014-01-05 12:35:22Z 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 3238 2014-01-05 12:35:22Z 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;
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 */
62extern char *g_serial_string;
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/*-----------------------------------------------------------*/
86
87
88/**
89 * @addtogroup utilityGroup
90 * @{
91 */
92/**
93 * Assertion handler. Prints a friendly message to the user,
94 * offering to ignore all, dump core, break to debugger,
95 * exit, or ignore. Intended to be used with an assert() macro.
96 *
97 * @param file The file in which the assertion triggered.
98 * @param function The function (@c __FUNCTION__) in which the assertion triggered.
99 * @param line The line number of the assert() statement.
100 * @param exp The expression that failed (as a string).
101 */
102void _mondo_assert_fail(const char *file,
103                        const char *function, int line, const char *exp)
104{
105    static int ignoring_assertions = 0;
106    bool is_valid = TRUE;
107
108    log_it("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line,
109           function);
110    if (ignoring_assertions) {
111        log_it("Well, the user doesn't care...");
112        return;
113    }
114    if (!g_text_mode)
115        newtSuspend();
116    printf("ASSERTION FAILED: `%s'\n", exp);
117    printf("\tat %s:%d in %s\n\n", file, line, function);
118    printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
119    do {
120        is_valid = TRUE;
121        switch (toupper(getchar())) {
122        case 'A':               // ignore (A)ll
123            ignoring_assertions = 1;
124            break;
125        case 'B':               // a(B)ort
126            signal(SIGABRT, SIG_DFL);   /* prevent SIGABRT handler from running */
127            raise(SIGABRT);
128            break;              /* "can't get here" */
129        case 'D':               // (D)ebug, aka asm("int 3")
130#ifdef __IA32__
131            __asm__ __volatile__("int $3"); // break to debugger
132#endif
133            break;
134        case 'E':               // (E)xit
135            fatal_error("Failed assertion -- see above for details");
136            break;              /* "can't get here" */
137        case 'I':               // (I)gnore
138            break;
139            /* These next two work as follows:
140               the `default' catches the user's invalid choice and says so;
141               the '\n' catches the newline on the end and prints the prompt again.
142             */
143        case '\n':
144            printf
145                ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
146            break;
147        default:
148            is_valid = FALSE;
149            printf("Invalid choice.\n");
150            break;
151        }
152    } while (!is_valid);
153
154    if (ignoring_assertions) {
155        log_it("Ignoring ALL assertions from now on.");
156    } else {
157        log_it("Ignoring assertion: %s", exp);
158    }
159
160    getchar();                  // skip \n
161
162    if (!g_text_mode)
163        newtResume();
164}
165
166/**
167 * Clean's up users' KDE desktops.
168 * @bug Details about this function are unknown.
169 */
170void clean_up_KDE_desktop_if_necessary(void)
171{
172    char *tmp = NULL;
173
174    mr_asprintf(tmp, "for i in `find /root /home -maxdepth 2 -type d -name Desktop -maxdepth 2`; do file=$i/.directory; if [ -f \"$file\" ] ; then mv -f $file $file.old ; awk '{if (index($0, \"rootimagesmindi\")) { while (length($0)>2) { getline;} ; } else { print $0;};}' $file.old  > $file ; fi ; done");
175    run_program_and_log_output(tmp, 5);
176    mr_free(tmp);
177}
178
179
180/**
181 * Locate mondoarchive's home directory. Searches in /usr/local/mondo, /usr/share/mondo,
182 * /usr/local/share/mondo, /opt, or if all else fails, search /usr.
183 *
184 * @param home_sz String to store the home directory ("" if it could not be found).
185 * @return 0 for success, nonzero for failure.
186 */
187int find_and_store_mondoarchives_home(char *home_sz)
188{
189    assert(home_sz != NULL);
190    strcpy(home_sz, MONDO_SHARE);
191    return (0);
192}
193
194
195char *get_architecture(void) {
196#ifdef __IA32__
197#   ifdef __X86_64__
198        return ("x86_64");
199#   else
200        return ("i386");
201#   endif
202#endif
203#ifdef __IA64__
204    return ("ia64");
205#endif
206    return ("unknown");
207}
208
209
210char *get_uname_m(void) {
211
212    struct utsname utsn;
213    char *tmp = NULL;
214
215    uname(&utsn);
216    mr_asprintf(tmp, "%s", utsn.machine);
217    return (tmp);
218}
219
220
221
222double get_kernel_version(void)
223{
224    char *p = NULL;
225    char *tmp = NULL;
226    double d;
227#ifdef __FreeBSD__
228    // JOSH - FIXME :)
229    d = 5.2;                    // :-)
230#else
231    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("uname -r"));
232    p = strchr(tmp, '.');
233    if (p) {
234        p = strchr(++p, '.');
235        if (p) {
236            while (*p) {
237                *p = *(p + 1);
238                p++;
239            }
240        }
241    }
242    d = atof(tmp);
243    mr_free(tmp);
244#endif
245    log_msg(1, "g_kernel_version = %f", d);
246    return (d);
247}
248
249
250/**
251 * Get the current time.
252 * @return number of seconds since the epoch.
253 */
254long get_time()
255{
256    return (long) time((void *) 0);
257}
258
259
260/**
261 * Initialize a RAID volume structure, setting fields to zero. The
262 * actual hard drive is unaffected.
263 *
264 * @param raidrec The RAID volume structure to initialize.
265 * @note This function is system dependent.
266 */
267#ifdef __FreeBSD__
268void initialize_raidrec(struct vinum_volume *raidrec)
269{
270    int i, j;
271    raidrec->volname[0] = '\0';
272    raidrec->plexes = 0;
273    for (i = 0; i < 9; ++i) {
274        raidrec->plex[i].raidlevel = -1;
275        raidrec->plex[i].stripesize = 0;
276        raidrec->plex[i].subdisks = 0;
277        for (j = 0; j < 9; ++j) {
278            strcpy(raidrec->plex[i].sd[j].which_device, "");
279        }
280    }
281}
282#else
283void initialize_raidrec(struct raid_device_record *raidrec)
284{
285    assert(raidrec != NULL);
286    raidrec->raid_device[0] = '\0';
287    raidrec->raid_level = -9;
288    raidrec->persistent_superblock = 1;
289    raidrec->chunk_size = 64;
290    raidrec->parity = -1;
291    raidrec->data_disks.entries = 0;
292    raidrec->spare_disks.entries = 0;
293    raidrec->parity_disks.entries = 0;
294    raidrec->failed_disks.entries = 0;
295    raidrec->additional_vars.entries = 0;
296}
297#endif
298
299
300
301
302/**
303 * Insert modules that Mondo requires.
304 * Currently inserts @c msdos, @c vfat, and @c loop for Linux;
305 * @c msdosfs and @c ext2fs for FreeBSD.
306 */
307void insmod_crucial_modules(void)
308{
309#ifdef __FreeBSD__
310    paranoid_system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
311    paranoid_system("kldstat | grep ext2fs  || kldload ext2fs 2> /dev/null");
312#else
313    paranoid_system("modprobe -a msdos vfat loop &> /dev/null");
314#endif
315}
316
317/**
318 * Finish configuring the backup information structure. Call this function
319 * to set the parameters that depend on those that can be given on the command
320 * line.
321 *
322 * @param bkpinfo The backup information structure. Fields modified/used:
323 * - Used: @c bkpinfo->backup_data
324 * - Used: @c bkpinfo->backup_media_type
325 * - Used: @c bkpinfo->cdrw_speed
326 * - Used: @c bkpinfo->compression_level
327 * - Used: @c bkpinfo->include_paths
328 * - Used: @c bkpinfo->prefix
329 * - Used: @c bkpinfo->isodir
330 * - Used: @c bkpinfo->manual_cd_tray
331 * - Used: @c bkpinfo->make_cd_use_lilo
332 * - Used: @c bkpinfo->media_device
333 * - Used: @c bkpinfo->netfs_mount
334 * - Used: @c bkpinfo->nonbootable_backup
335 * - Used: @c bkpinfo->scratchdir
336 * - Used: @c bkpinfo->tmpdir
337 * - Used: @c bkpinfo->use_lzo
338 * - Modified: @c bkpinfo->call_before_iso
339 * - Modified: @c bkpinfo->call_make_iso
340 * - Modified: @c bkpinfo->optimal_set_size
341 * - Modified: @c bkpinfo->zip_exe
342 * - Modified: @c bkpinfo->zip_suffix
343 *
344 * @return number of errors, or 0 for success.
345 * @note Also creates directories that are specified in the @c bkpinfo structure but
346 * do not exist.
347 */
348int post_param_configuration()
349{
350    char *extra_cdrom_params = NULL;
351    char *mondo_mkisofs_sz = NULL;
352    char *command = NULL;
353    char *hostname = NULL;
354    char *isofs_cmd = NULL;
355    char *ip_address = NULL;
356    int retval = 0;
357    char *colon;
358    char *cdr_exe = NULL;
359    char *tmp = NULL;
360    char *call_before_iso_user = NULL;
361    char *iso_dev = NULL;
362    char *iso_mnt = NULL;
363    char *iso_tmp = NULL;
364    char *iso_path = NULL;
365
366    assert(bkpinfo != NULL);
367
368    bkpinfo->optimal_set_size = (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 16 : 16) * 1024;
369
370    log_msg(1, "Post-param");
371    if (bkpinfo->backup_media_type == tape) {
372        if (whine_if_not_found("mt") == 1) {
373            fatal_error("Please install the mt command");
374        }
375        log_msg(1, "Tape");
376        if (bkpinfo->media_device == NULL) {
377            return(1);
378        }
379        mr_asprintf(tmp, "mt -f %s status", bkpinfo->media_device);
380        log_msg(1, "tmp = '%s'", tmp);
381        if (run_program_and_log_output(tmp, 3)) {
382            mr_free(tmp);
383            fatal_error("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.");
384        }
385        mr_free(tmp);
386    }
387    if (bkpinfo->backup_media_type == iso)
388        make_hole_for_dir(bkpinfo->isodir);
389
390    run_program_and_log_output("uname -a", 5);
391    run_program_and_log_output("cat /etc/*-release", 5);
392    run_program_and_log_output("cat /etc/*issue*", 5);
393#ifdef __FreeBSD__
394#else
395    run_program_and_log_output("cat /proc/cpuinfo", 5);
396    run_program_and_log_output
397        ("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc",
398         5);
399#endif
400
401    if (bkpinfo->use_lzo) {
402        strcpy(bkpinfo->zip_exe, "lzop");
403        strcpy(bkpinfo->zip_suffix, "lzo");
404    } else if (bkpinfo->use_gzip) {
405        strcpy(bkpinfo->zip_exe, "gzip");
406        strcpy(bkpinfo->zip_suffix, "gz");
407    } else if (bkpinfo->use_lzma) {
408        strcpy(bkpinfo->zip_exe, "lzma");
409        strcpy(bkpinfo->zip_suffix, "lzma");
410    } else if (bkpinfo->compression_level != 0) {
411        strcpy(bkpinfo->zip_exe, "bzip2");
412        strcpy(bkpinfo->zip_suffix, "bz2");
413    } else {
414        bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
415    }
416
417// DVD
418
419    if (bkpinfo->backup_media_type == dvd) {
420        if (find_home_of_exe("growisofs")) {
421            mr_asprintf(cdr_exe, "growisofs");
422        }                       // unlikely to be used
423        else {
424            fatal_error("Please install growisofs.");
425        }
426        if (bkpinfo->nonbootable_backup) {
427            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
428        } else if
429#ifdef __FreeBSD__
430            (TRUE)
431#else
432            (bkpinfo->make_cd_use_lilo)
433#endif
434#ifdef __IA64__
435    {
436        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
437    }
438#else
439    {
440        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
441    }
442#endif
443        else {
444            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
445        }
446        if (bkpinfo->manual_cd_tray) {
447            fatal_error("Manual CD tray + DVD not supported yet.");
448            // -m isn't supported by growisofs, BTW...
449        } else {
450            sprintf(bkpinfo->call_make_iso, "%s %s -Z %s . 2>> _ERR_", mondo_mkisofs_sz, "", bkpinfo->media_device);
451        }
452        mr_free(mondo_mkisofs_sz);
453        if (getenv ("SUDO_COMMAND")) {
454            mr_asprintf(command, "strings `which growisofs` | grep -c SUDO_COMMAND");
455            if (!strcmp(call_program_and_get_last_line_of_output(command), "1")) {
456                mr_free(command);
457                popup_and_OK("Fatal Error: Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
458                fatal_error("Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
459            }       
460            mr_free(command);
461        }
462        log_msg(2, "call_make_iso (DVD res) is ... %s", bkpinfo->call_make_iso);
463    }                           // end of DVD code
464
465// CD-R or CD-RW
466    if (bkpinfo->backup_media_type == cdrw
467        || bkpinfo->backup_media_type == cdr) {
468        if (!bkpinfo->manual_cd_tray) {
469            mr_asprintf(extra_cdrom_params, "-waiti ");
470        }
471        if (bkpinfo->backup_media_type == cdrw) {
472            mr_asprintf(extra_cdrom_params, "blank=fast ");
473        }
474        if (extra_cdrom_params == NULL) {
475            // If not initialized earlier, do it now
476            mr_asprintf(extra_cdrom_params, " ");
477        }
478        if (find_home_of_exe("cdrecord")) {
479            mr_asprintf(cdr_exe, "cdrecord");
480        } else if (find_home_of_exe("dvdrecord")) {
481            mr_asprintf(cdr_exe, "dvdrecord");
482        } else {
483            fatal_error("Please install either cdrecord or dvdrecord.");
484        }
485        if (find_home_of_exe("genisoimage")) {
486            mr_asprintf(isofs_cmd, "%s", MONDO_GENISOIMAGE_CMD);
487        } else {
488            mr_asprintf(isofs_cmd, "%s", MONDO_MKISOFS_CMD);
489        }
490        if (bkpinfo->nonbootable_backup) {
491            mr_asprintf(mondo_mkisofs_sz, "%s%s", isofs_cmd, MONDO_MKISOFS);
492        } else if
493#ifdef __FreeBSD__
494            (TRUE)
495#else
496            (bkpinfo->make_cd_use_lilo)
497#endif
498#ifdef __IA64__
499    {
500        mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_ELILO);
501    }
502#else
503    {
504        mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_LILO);
505    }
506#endif
507        else
508        {
509            mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_SYSLINUX);
510        }
511        mr_free(isofs_cmd);
512
513        if (bkpinfo->manual_cd_tray) {
514            if (bkpinfo->call_before_iso[0] == '\0') {
515                sprintf(bkpinfo->call_before_iso, "%s -o %s/"MONDO_TMPISOS" . 2>> _ERR_", mondo_mkisofs_sz, bkpinfo->tmpdir);
516            } else {
517                mr_asprintf(call_before_iso_user, "%s", bkpinfo->call_before_iso);
518                sprintf(bkpinfo->call_before_iso, "( %s -o %s/"MONDO_TMPISOS" . 2>> _ERR_ ; %s )", mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
519                mr_free(call_before_iso_user);
520            }
521            log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
522            sprintf(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);
523        } else {
524            sprintf(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);
525        }
526        mr_free(cdr_exe);
527        mr_free(mondo_mkisofs_sz);
528        mr_free(extra_cdrom_params);
529    }                           // end of CD code
530
531    if (bkpinfo->backup_media_type == iso) {
532
533/* Patch by Conor Daly <conor.daly@met.ie>
534 * 23-june-2004
535 * Break up isodir into iso_mnt and iso_path
536 * These will be used along with iso-dev at restore time
537 * to locate the ISOs where ever they're mounted
538 */
539
540        log_it("isodir = %s", bkpinfo->isodir);
541        mr_asprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1", bkpinfo->isodir);
542        log_it("command = %s", command);
543        mr_asprintf(iso_dev, "%s", call_program_and_get_last_line_of_output(command));
544        log_it("res of it = %s", iso_dev);
545        mr_asprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
546        write_one_liner_data_file(tmp, iso_dev);
547        mr_free(tmp);
548        mr_free(command);
549
550        mr_asprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3", iso_dev);
551        mr_free(iso_dev);
552
553        log_it("command = %s", command);
554        mr_asprintf(iso_mnt, "%s", call_program_and_get_last_line_of_output(command));
555        log_it("res of it = %s", iso_mnt);
556        mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
557        write_one_liner_data_file(tmp, iso_mnt);
558        mr_free(tmp);
559        mr_free(command);
560
561        log_it("isomnt: %s, %d", iso_mnt, strlen(iso_mnt));
562        mr_asprintf(iso_tmp, "%s", bkpinfo->isodir);
563        if (strlen(iso_tmp) < strlen(iso_mnt)) {
564            mr_asprintf(iso_path, "%s", "");
565        } else {
566            // If iso_mnt is only / then iso_path is the full dir
567            // (the formula bellow doesn't work in this case)
568            if (strcmp(iso_mnt, "/") == 0) {
569                mr_asprintf(iso_path, "%s", iso_tmp);
570            // else it's a part of iso_tmp
571            } else {
572                mr_asprintf(iso_path, "%s", iso_tmp + strlen(iso_mnt));
573            }
574        }
575        mr_free(iso_mnt);
576        mr_free(iso_tmp);
577
578        mr_asprintf(tmp, "%s/ISODIR", bkpinfo->tmpdir);
579        write_one_liner_data_file(tmp, iso_path);
580        mr_free(tmp);
581
582        log_it("isodir: %s", iso_path);
583        mr_free(iso_path);
584
585        mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
586        write_one_liner_data_file(tmp, bkpinfo->prefix);
587        mr_free(tmp);
588
589        log_it("iso-prefix: %s",  bkpinfo->prefix);
590
591/* End patch */
592    }                           // end of iso code
593
594    if (bkpinfo->backup_media_type == netfs) {
595        if (bkpinfo->netfs_mount) {
596            mr_asprintf(hostname, "%s", bkpinfo->netfs_mount);
597        } else {
598            log_it("netfs_mount is NULL");
599            retval++;
600            mr_asprintf(hostname, "");
601        }
602        colon = strchr(hostname, ':');
603        if (!colon) {
604            log_it("netfs mount doesn't have a colon in it");
605            retval++;
606        } else {
607            struct hostent *hent;
608
609            *colon = '\0';
610            colon = strchr(hostname, '@');
611            if (colon) {
612                *colon = '\0';
613                colon++;
614                hent = gethostbyname(colon);
615                mr_asprintf(bkpinfo->netfs_user,"%s", hostname);
616            } else {
617                hent = gethostbyname(hostname);
618            }
619            if (!hent) {
620                log_it("Can't resolve Network mount (%s): %s", hostname, hstrerror(h_errno));
621                retval++;
622            } else {
623                mr_asprintf(ip_address, "%s", inet_ntoa((struct in_addr) *((struct in_addr *) hent->h_addr)));
624                mr_strcat(ip_address, strchr(bkpinfo->netfs_mount, ':'));
625                mr_free(bkpinfo->netfs_mount);
626                bkpinfo->netfs_mount = ip_address;
627            }
628        }
629        mr_free(hostname);
630        store_netfs_config();
631    }
632
633    log_it("Finished processing incoming params");
634    if (retval) {
635        fprintf(stderr, "Type 'man mondoarchive' for help.\n");
636    }
637    if (bkpinfo->include_paths == NULL) {
638        mr_asprintf(bkpinfo->include_paths, "/");
639    }
640    g_backup_media_type = bkpinfo->backup_media_type;
641    return (retval);
642}
643
644
645
646/**
647 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
648 * Seeds the random-number generator, loads important modules, checks the sanity
649 * of the user's Linux distribution, and deletes logfile.
650 * @param bkpinfo The backup information structure. Will be initialized.
651 * @return number of errors (0 for success)
652 */
653int pre_param_configuration()
654{
655    int res = 0;
656    char *tmp = NULL;
657
658    make_hole_for_dir(MNT_CDROM);
659    assert(bkpinfo != NULL);
660    srandom((unsigned long) (time(NULL)));
661    insmod_crucial_modules();
662    if (bkpinfo->disaster_recovery) {
663        if (!does_nonMS_partition_exist()) {
664            fatal_error("I am in disaster recovery mode\nPlease don't run mondoarchive.");
665        }
666    }
667
668    mr_asprintf(tmp,"rm -Rf %s/changed.files*",MONDO_CACHE);
669    run_program_and_log_output(tmp, FALSE);
670    paranoid_free(tmp);
671    if (find_and_store_mondoarchives_home(g_mondo_home)) {
672        fprintf(stderr, "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");
673        res++;
674        return (res);
675    }
676    res += some_basic_system_sanity_checks();
677    if (res) {
678        log_it("Your distribution did not pass Mondo's sanity test.");
679    }
680    g_current_media_number = 1;
681    bkpinfo->postnuke_tarball[0] = '\0';
682    return (res);
683}
684
685/*  From busybox under GPLv2 */
686#ifndef HAVE_MKDTEMP
687/* This is now actually part of POSIX.1, but was only added in 2008 */
688char* mkdtemp(char *template)
689{
690    if (mktemp(template) == NULL || mkdir(template, 0700) != 0)
691        return NULL;
692    return template;
693}
694#endif
695
696void setup_tmpdir(char *path) {
697
698    char *tmp = NULL;
699    char *p = NULL;
700
701    if (bkpinfo->tmpdir[0] != '\0') {
702        /* purging a potential old tmpdir */
703        if (chdir("/tmp")) {
704            // FIXME
705        }
706        if (strstr(bkpinfo->tmpdir,"mondo.tmp.") != NULL) {
707            log_it("Purging old tmpdir %s", bkpinfo->tmpdir);
708            mr_asprintf(tmp,"rm -Rf %s",bkpinfo->tmpdir);
709        } else {
710            log_it("Purging old tmpdir %s/mondo.tmp.*", bkpinfo->tmpdir);
711            mr_asprintf(tmp,"rm -Rf %s/mondo.tmp.*",bkpinfo->tmpdir);
712        }
713        paranoid_system(tmp);
714        mr_free(tmp);
715    }
716
717    /* Always take in account arg first, then env, then default */
718    if (path != NULL) {
719        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", path);
720    } else if (getenv("TMPDIR")) {
721        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("TMPDIR"));
722    } else if (getenv("MRTMP")) {
723        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("MRTMP"));
724    } else {
725        mr_asprintf(tmp, "/tmp/mondo.tmp.XXXXXX");
726    }
727    p = mkdtemp(tmp);
728    if (p == NULL) {
729        printf("Failed to create global tmp directory %s for Mondo.",tmp);
730        mr_free(tmp);
731        finish(-1);
732    }
733    strcpy(bkpinfo->tmpdir,p);
734    mr_free(tmp);
735
736    log_it("bkpinfo->tmpdir is being set to %s", bkpinfo->tmpdir);
737
738    mr_asprintf(tmp, "mkdir -p %s/tmpfs", bkpinfo->tmpdir);
739    paranoid_system(tmp);
740    mr_free(tmp);
741}
742
743void setup_scratchdir(char *path) {
744
745    char *tmp = NULL;
746    char *p = NULL;
747
748    if (bkpinfo->scratchdir != NULL) {
749        /* purging a potential old scratchdir */
750        if (chdir("/tmp")) {
751            // FIXME
752        }
753        if (strstr(bkpinfo->scratchdir,"mondo.scratch.") != NULL) {
754            log_it("Purging old scratchdir %s", bkpinfo->scratchdir);
755            mr_asprintf(tmp,"rm -Rf %s",bkpinfo->scratchdir);
756        } else {
757            log_it("Purging old scratchdir %s/mondo.scratch.*", bkpinfo->scratchdir);
758            mr_asprintf(tmp,"rm -Rf %s/mondo.scratch.*",bkpinfo->scratchdir);
759        }
760        paranoid_system(tmp);
761        mr_free(tmp);
762    }
763
764    /* Always take in account arg first, then env, then default */
765    if (path != NULL) {
766        mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", path);
767    } else if (getenv("MRSCRATCH")) {
768        mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", getenv("MRSCRATCH"));
769    } else {
770        mr_asprintf(tmp, "/tmp/mondo.scratch.XXXXXX");
771    }
772    p = mkdtemp(tmp);
773    if (p == NULL) {
774        log_it("Failed to create global scratch directory %s for Mondo.",tmp);
775        finish(-1);
776    }
777    strcpy(bkpinfo->scratchdir,p);
778    log_it("bkpinfo->scratchdir is being set to %s", bkpinfo->scratchdir);
779    paranoid_free(tmp);
780
781    mr_asprintf(tmp, "mkdir -p %s", bkpinfo->scratchdir);
782    paranoid_system(tmp);
783    mr_free(tmp);
784}
785
786
787/**
788 * Reset all fields of the backup information structure to a sensible default.
789 * @param bkpinfo The @c bkpinfo to reset.
790 */
791void reset_bkpinfo()
792{
793    assert(bkpinfo != NULL);
794    memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
795
796    bkpinfo->media_device[0] = '\0';
797    bkpinfo->media_size = -1;
798    bkpinfo->boot_loader = '\0';
799    bkpinfo->boot_device[0] = '\0';
800    bkpinfo->zip_exe[0] = '\0';
801    bkpinfo->zip_suffix[0] = '\0';
802    bkpinfo->image_devs[0] = '\0';
803    bkpinfo->compression_level = 3;
804    bkpinfo->use_lzo = FALSE;
805    bkpinfo->use_gzip = FALSE;
806    bkpinfo->use_lzma = FALSE;
807    bkpinfo->verify_data = FALSE;
808    bkpinfo->backup_data = FALSE;
809    bkpinfo->restore_data = FALSE;
810    bkpinfo->use_star = FALSE;
811    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
812   
813    /*  We need tmpdir as early as possible for further function calls */
814    bkpinfo->tmpdir[0] = '\0';          // Really setup after
815    bkpinfo->scratchdir[0] = '\0';          // Really setup after
816    setup_tmpdir(NULL);
817    setup_scratchdir(NULL);
818
819    bkpinfo->disaster_recovery = am_I_in_disaster_recovery_mode();
820    if (bkpinfo->disaster_recovery) {
821        strcpy(bkpinfo->isodir, "/");
822    } else {
823        strcpy(bkpinfo->isodir, MONDO_CACHE);
824    }
825    strcpy(bkpinfo->prefix, STD_PREFIX);
826    bkpinfo->optimal_set_size = 0;
827    bkpinfo->backup_media_type = none;
828    bkpinfo->make_filelist = TRUE;  // unless -J supplied to mondoarchive
829    bkpinfo->exclude_paths = NULL;
830    bkpinfo->include_paths = NULL;
831    bkpinfo->exclude_devs = NULL;
832    bkpinfo->restore_path[0] = '\0';
833    bkpinfo->call_before_iso[0] = '\0';
834    bkpinfo->call_make_iso[0] = '\0';
835    bkpinfo->call_burn_iso[0] = '\0';
836    bkpinfo->call_after_iso[0] = '\0';
837    bkpinfo->kernel_path[0] = '\0';
838    bkpinfo->netfs_mount = NULL;
839    bkpinfo->netfs_proto = NULL;
840    bkpinfo->netfs_user = NULL;
841    bkpinfo->netfs_remote_dir = NULL;
842    bkpinfo->postnuke_tarball[0] = '\0';
843    bkpinfo->subdir = NULL;
844    bkpinfo->wipe_media_first = FALSE;
845    bkpinfo->differential = 0;
846    bkpinfo->please_dont_eject = FALSE;
847    bkpinfo->cdrw_speed = 0;
848    bkpinfo->manual_cd_tray = FALSE;
849    bkpinfo->nonbootable_backup = FALSE;
850    bkpinfo->make_cd_use_lilo = FALSE;
851    bkpinfo->use_obdr = FALSE;
852    bkpinfo->restore_mode = interactive;
853}
854
855
856/**
857 * Get the remaining free space (in MB) on @p partition.
858 * @param partition The partition to check free space on (either a device or a mountpoint).
859 * @return The free space on @p partition, in MB.
860 */
861long free_space_on_given_partition(char *partition)
862{
863    char *out_sz = NULL;
864    char *command = NULL;
865    long res;
866
867    assert_string_is_neither_NULL_nor_zerolength(partition);
868
869    mr_asprintf(command, "df -m -P %s 1> /dev/null 2> /dev/null", partition);
870    if (system(command)) {
871        mr_free(command);
872        return (-1);
873    }                           // partition does not exist
874    mr_free(command);
875
876    mr_asprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4", partition);
877    mr_asprintf(out_sz, "%s", call_program_and_get_last_line_of_output(command));
878    mr_free(command);
879
880    if (strlen(out_sz) == 0) {
881        mr_free(out_sz);
882        return (-1);
883    }                           // error within df, probably
884    res = atol(out_sz);
885    mr_free(out_sz);
886    return (res);
887}
888
889
890
891/**
892 * Check the user's system for sanity. Checks performed:
893 * - make sure user has enough RAM (32mb required, 64mb recommended)
894 * - make sure user has enough free space in @c /
895 * - check kernel for ramdisk support
896 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
897 * - make sure CD-ROM is unmounted
898 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
899 *
900 * @return number of problems with the user's setup (0 for success)
901 */
902int some_basic_system_sanity_checks()
903{
904
905    /*@ buffers ************ */
906    char *tmp = NULL;
907
908    /*@ int's *************** */
909    int retval = 0;
910
911    mvaddstr_and_log_it(g_currentY, 0, "Checking sanity of your Linux distribution");
912#ifndef __FreeBSD__
913    if (system("which mkfs.vfat 2> /dev/null 1> /dev/null")
914        && !system("which mkfs.msdos 2> /dev/null 1> /dev/null")) {
915        log_it("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
916        run_program_and_log_output("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
917    }
918    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
919    if (atol(tmp) < 35000) {
920        retval++;
921        log_to_screen("You must have at least 32MB of RAM to use Mondo.");
922    }
923    if (atol(tmp) < 66000) {
924        log_to_screen("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
925    }
926    mr_free(tmp);
927#endif
928
929    if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
930        retval++;
931        log_to_screen
932            ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
933        fatal_error
934            ("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. :)");
935    }
936#ifndef __FreeBSD__
937    if (run_program_and_log_output
938        ("grep ramdisk /proc/devices", FALSE)) {
939        /* Some SuSE have ramdisk as modules, so insert it first, then test again */
940        run_program_and_log_output("modprobe brd 2> /dev/null > /dev/null",FALSE);
941        if (run_program_and_log_output("grep ramdisk /proc/devices", FALSE)) {
942            if (!ask_me_yes_or_no("Your kernel has no ramdisk support. That's mind-numbingly stupid but I'll allow it if you're planning to use another kernel. Are you?")) {
943                //          retval++;
944                log_to_screen("It looks as if your kernel lacks ramdisk and initrd support.");
945                log_to_screen("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
946            }
947        }
948    }
949#endif
950    retval += whine_if_not_found(MKE2FS_OR_NEWFS);
951    if (system("which genisoimage > /dev/null 2> /dev/null")) {
952        retval += whine_if_not_found("mkisofs");
953    }
954    if (system("which wodim > /dev/null 2> /dev/null")) {
955        retval += whine_if_not_found("cdrecord");
956    }
957    retval += whine_if_not_found("bzip2");
958    retval += whine_if_not_found("gzip");
959    retval += whine_if_not_found("awk");
960    retval += whine_if_not_found("md5sum");
961    retval += whine_if_not_found("strings");
962    retval += whine_if_not_found("mindi");
963    retval += whine_if_not_found("buffer");
964
965    // abort if Windows partition but no ms-sys and parted
966    if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -vE \"/dev/fd|nexdisk\"", 0)) {
967        log_to_screen("I think you have a Windows 9x partition.");
968        retval += whine_if_not_found("parted");
969    }
970
971    if (!find_home_of_exe("cmp")) {
972        whine_if_not_found("cmp");
973    }
974    run_program_and_log_output("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
975    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("mount | grep -E \"cdr(om|w)\""));
976    if (strcmp("", tmp)) {
977        if (strstr(tmp, "autofs")) {
978            log_to_screen("Your CD-ROM is mounted via autofs. I therefore cannot tell");
979            log_to_screen("if a CD actually is inserted. If a CD is inserted, please");
980            log_to_screen("eject it. Thank you.");
981            log_it("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
982        } else
983            if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
984            retval++;
985            mr_free(tmp);
986            fatal_error("Your CD-ROM drive is mounted. Please unmount it.");
987        }
988    }
989    mr_free(tmp);
990
991    run_program_and_log_output("cat /etc/fstab", 5);
992#ifdef __FreeBSD__
993    run_program_and_log_output("vinum printconfig", 5);
994#else
995    run_program_and_log_output("cat /etc/raidtab", 5);
996#endif
997
998    if (run_program_and_log_output("mindi -V", 1)) {
999        log_to_screen("Could not ascertain mindi's version number.");
1000        log_to_screen("You have not installed Mondo and/or Mindi properly.");
1001        log_to_screen("Please uninstall and reinstall them both.");
1002        fatal_error("Please reinstall Mondo and Mindi.");
1003    }
1004    mr_asprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test", bkpinfo->tmpdir);
1005    if (run_program_and_log_output(tmp, 5)) {
1006        log_to_screen("%s failed for some reason.", tmp);
1007        mr_free(tmp);
1008        log_to_screen("Please run that command by hand and examine /var/log/mindi.log");
1009        log_to_screen("for more information. Perhaps your /etc/fstab file is insane.");
1010        log_to_screen("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
1011        retval++;
1012    }
1013    mr_free(tmp);
1014
1015    if (!run_program_and_log_output("parted2fdisk -l 2>/dev/null | grep -i raid", 1) && !does_file_exist("/etc/raidtab")) {
1016        log_to_screen("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1017        create_raidtab_from_mdstat(MDSTAT_FILE,"/etc/raidtab");
1018    }
1019
1020    if (retval) {
1021        mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1022    } else {
1023        mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1024    }
1025    return (retval);
1026}
1027
1028/**
1029 * Retrieve the line containing @p label from the config file.
1030 * @param config_file The file to read from, usually @c /tmp/mondo-restore.cfg.
1031 * @param label What to read from the file.
1032 * @param value Where to put it.
1033 * @return 0 for success, 1 for failure.
1034 */
1035int read_cfg_var(char *config_file, char *label, char *value)
1036{
1037    /*@ buffer ****************************************************** */
1038    char *command = NULL;
1039
1040    /*@ end vars *************************************************** */
1041
1042    assert_string_is_neither_NULL_nor_zerolength(config_file);
1043    assert_string_is_neither_NULL_nor_zerolength(label);
1044    if (!does_file_exist(config_file)) {
1045        log_to_screen("(read_cfg_var) Cannot find %s config file", config_file);
1046        value[0] = '\0';
1047        return (1);
1048    } else if ((value != NULL) && (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))) {
1049        log_msg(2, "FYI, I can't read new value for %s - already got %s", label, value);
1050        return (0);
1051    } else {
1052        mr_asprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5", label, config_file);
1053        strcpy(value, call_program_and_get_last_line_of_output(command));
1054        mr_free(command);
1055
1056        log_msg(4, "Configuration item %s is %s", label, value);
1057        if (strlen(value) == 0) {
1058            return (1);
1059        } else {
1060            return (0);
1061        }
1062    }
1063}
1064
1065
1066
1067/**
1068 * Remount @c supermount if it was unmounted earlier.
1069 */
1070void remount_supermounts_if_necessary()
1071{
1072    if (g_remount_cdrom_at_end) {
1073        run_program_and_log_output("mount " MNT_CDROM, FALSE);
1074    }
1075    if (g_remount_floppy_at_end) {
1076        run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1077    }
1078}
1079
1080/**
1081 * Unmount @c supermount if it's mounted.
1082 */
1083void unmount_supermounts_if_necessary()
1084{
1085    if (run_program_and_log_output
1086        ("mount | grep cdrom | grep super", FALSE) == 0) {
1087        g_remount_cdrom_at_end = TRUE;
1088        run_program_and_log_output("umount " MNT_CDROM, FALSE);
1089    }
1090    if (run_program_and_log_output
1091        ("mount | grep floppy | grep super", FALSE) == 0) {
1092        g_remount_floppy_at_end = TRUE;
1093        run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1094    }
1095}
1096
1097/**
1098 * Whether we had to stop autofs (if so, restart it at end).
1099 */
1100bool g_autofs_stopped = FALSE;
1101
1102/**
1103 * Path to the autofs initscript ("" if none exists).
1104 */
1105char g_autofs_exe[MAX_STR_LEN];
1106
1107/**
1108 * Autofs initscript in Xandros Linux distribution.
1109 */
1110#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1111
1112/**
1113 * Autofs initscript in most Linux distributions.
1114 */
1115#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1116
1117/**
1118 * If autofs is mounted, stop it (restart at end).
1119 */
1120void stop_autofs_if_necessary()
1121{
1122    char *tmp = NULL;
1123
1124    g_autofs_exe[0] = '\0';
1125    if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1126        strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1127    } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1128        strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1129    }
1130
1131    if (!g_autofs_exe[0]) {
1132        log_msg(3, "No autofs detected.");
1133    } else {
1134        log_msg(3, "%s --- autofs detected", g_autofs_exe);
1135        // FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1136        mr_asprintf(tmp, "%s stop", g_autofs_exe);
1137        if (run_program_and_log_output(tmp, 2)) {
1138            log_it("Failed to stop autofs - I assume it wasn't running");
1139        } else {
1140            g_autofs_stopped = TRUE;
1141            log_it("Stopped autofs OK");
1142        }
1143        mr_free(tmp);
1144    }
1145}
1146
1147/**
1148 * If autofs was stopped earlier, restart it.
1149 */
1150void restart_autofs_if_necessary()
1151{
1152    char *tmp = NULL;
1153
1154    if (!g_autofs_stopped || !g_autofs_exe[0]) {
1155        log_msg(3, "No autofs detected.");
1156        return;
1157    }
1158    mr_asprintf(tmp, "%s start", g_autofs_exe);
1159    if (run_program_and_log_output(tmp, 2)) {
1160        log_it("Failed to start autofs");
1161    } else {
1162        g_autofs_stopped = FALSE;
1163        log_it("Started autofs OK");
1164    }
1165    mr_free(tmp);
1166}
1167
1168
1169/**
1170 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1171 */
1172void mount_boot_if_necessary() {
1173    char *tmp = NULL;
1174    char *command = NULL;
1175
1176    log_msg(1, "Started sub");
1177    log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1178    g_boot_mountpt[0] = '\0';
1179    log_msg(4, "Done. Great. Seeting command to something");
1180    mr_asprintf(command, "%s", "grep -v \":\" /etc/fstab | grep -vE '^#.*$' | grep -E \"[   ]/boot[     ]\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1181    log_msg(4, "Cool. Command = '%s'", command);
1182    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1183    mr_free(command);
1184
1185    log_msg(4, "tmp = '%s'", tmp);
1186    log_it("/boot is at %s according to /etc/fstab", tmp);
1187    mr_asprintf(command, "mount | grep -Ew '/boot'");
1188    mr_free(tmp);
1189
1190    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1191    mr_free(command);
1192
1193    if (!strcmp(tmp,"")) {
1194        if ((strstr(tmp, "LABEL=") != NULL) || (strstr(tmp,"UUID=") != NULL)) {
1195            if (!run_program_and_log_output("mount /boot", 5)) {
1196                strcpy(g_boot_mountpt, "/boot");
1197                log_msg(1, "Mounted /boot");
1198            } else {
1199                log_it("...ignored cos it's a label or uuid :-)");
1200            }
1201        } else {
1202            mr_asprintf(command, "mount | grep -E '^%s'", tmp);
1203            log_msg(3, "command = %s", command);
1204            if (run_program_and_log_output(command, 5)) {
1205                strcpy(g_boot_mountpt, tmp);
1206                mr_free(tmp);
1207                log_it("%s (your /boot partition) is not mounted. I'll mount it before backing up", g_boot_mountpt);
1208
1209                mr_asprintf(tmp, "mount %s", g_boot_mountpt);
1210                if (run_program_and_log_output(tmp, 5)) {
1211                    g_boot_mountpt[0] = '\0';
1212                    log_msg(1, "Plan B");
1213                    if (!run_program_and_log_output("mount /boot", 5)) {
1214                        strcpy(g_boot_mountpt, "/boot");
1215                        log_msg(1, "Plan B worked");
1216                    } else {
1217                        log_msg(1,
1218                            "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1219                    }
1220                }
1221            }
1222            mr_free(command);
1223        }
1224    }
1225    mr_free(tmp);
1226    log_msg(1, "Ended sub");
1227}
1228
1229
1230/**
1231 * If we mounted /boot earlier, unmount it.
1232 */
1233void unmount_boot_if_necessary()
1234{
1235    char *tmp = NULL;
1236
1237    log_msg(3, "starting");
1238    if (g_boot_mountpt[0]) {
1239        mr_asprintf(tmp, "umount %s", g_boot_mountpt);
1240        if (run_program_and_log_output(tmp, 5)) {
1241            log_it("WARNING - unable to unmount /boot");
1242        }
1243        mr_free(tmp);
1244    }
1245    log_msg(3, "leaving");
1246}
1247
1248
1249
1250/**
1251 * Write a line to a configuration file. Writes a line of the form,
1252 * @c label @c value.
1253 * @param config_file The file to write to. Usually @c mondo-restore.cfg.
1254 * @param label What to call this bit of data you're writing.
1255 * @param value The bit of data you're writing.
1256 * @return 0 for success, 1 for failure.
1257 */
1258int write_cfg_var(char *config_file, char *label, char *value)
1259{
1260    /*@ buffers ***************************************************** */
1261    char *command = NULL;
1262    char *tempfile = NULL;
1263
1264
1265    /*@ end vars *************************************************** */
1266    assert_string_is_neither_NULL_nor_zerolength(config_file);
1267    assert_string_is_neither_NULL_nor_zerolength(label);
1268    assert(value != NULL);
1269    if (!does_file_exist(config_file)) {
1270        log_to_screen("(write_cfg_file) Cannot find %s config file", config_file);
1271        return (1);
1272    }
1273    mr_asprintf(tempfile, "%s/mojo-jojo.blah", bkpinfo->tmpdir);
1274    if (does_file_exist(config_file)) {
1275        mr_asprintf(command, "grep -vE '^%s .*$' %s > %s", label, config_file, tempfile);
1276        paranoid_system(command);
1277        mr_free(command);
1278    }
1279    mr_asprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1280    paranoid_system(command);
1281    mr_free(command);
1282
1283    mr_asprintf(command, "mv -f %s %s", tempfile, config_file);
1284    paranoid_system(command);
1285    mr_free(command);
1286    unlink(tempfile);
1287    mr_free(tempfile);
1288    return (0);
1289}
1290
1291
1292/**
1293 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1294 * information to the logfile.
1295 */
1296void standard_log_debug_msg(int debug_level, const char *szFile, const char *szFunction, int nLine, const char *fmt, ...) {
1297
1298    va_list args;
1299    static int depth = 0;
1300    FILE *fout;
1301
1302    if (depth > 5) {
1303        depth--;
1304        return;
1305    }
1306    depth++;
1307
1308    if (debug_level <= g_loglevel) {
1309        if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1310            return;
1311        }
1312
1313        // add tabs to distinguish log levels
1314        if (debug_level > 0) {
1315            fprintf(fout, "DBG%d: ", debug_level);
1316            if (getpid() == g_main_pid)
1317                fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction, nLine);
1318            else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1319                fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction, nLine);
1320            else
1321                fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile, szFunction, nLine);
1322        } else {
1323            fprintf(fout, "INFO: ");
1324        }
1325        va_start(args, fmt);
1326        vfprintf(fout, fmt, args);
1327        va_end(args);
1328
1329        fprintf(fout, "\n");
1330        paranoid_fclose(fout);
1331    }
1332    depth--;
1333}
1334
1335/**
1336 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1337 */
1338void (*log_debug_msg) (int, const char *, const char *, int, const char *, ...) = standard_log_debug_msg;
1339
1340
1341/**
1342 * Allocate or free important globals, depending on @p mal.
1343 * @param mal If TRUE, malloc; if FALSE, free.
1344 */
1345void do_libmondo_global_strings_thing(int mal)
1346{
1347    if (mal) {
1348        malloc_string(g_boot_mountpt);
1349        malloc_string(g_mondo_home);
1350        malloc_string(g_serial_string);
1351        malloc_string(g_magicdev_command);
1352    } else {
1353        paranoid_free(g_boot_mountpt);
1354        paranoid_free(g_mondo_home);
1355        paranoid_free(g_magicdev_command);
1356
1357        mr_free(g_serial_string);
1358    }
1359}
1360
1361/**
1362 * Allocate important globals.
1363 * @see do_libmondo_global_strings_thing
1364 */
1365void malloc_libmondo_global_strings(void)
1366{
1367    do_libmondo_global_strings_thing(1);
1368}
1369
1370/**
1371 * Free important globals.
1372 * @see do_libmondo_global_strings_thing
1373 */
1374void free_libmondo_global_strings(void)
1375{
1376    do_libmondo_global_strings_thing(0);
1377}
1378
1379
1380
1381/**
1382 * Stop @c magicdev if it's running.
1383 * The command used to start it is saved in @p g_magicdev_command.
1384 */
1385void stop_magicdev_if_necessary()
1386{
1387    strcpy(g_magicdev_command, call_program_and_get_last_line_of_output("ps ax | grep -w magicdev | grep -v grep | tr -s '\t' ' '| cut -d' ' -f6-99"));
1388    if (g_magicdev_command[0]) {
1389        log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1390        paranoid_system("killall magicdev");
1391    }
1392}
1393
1394
1395/**
1396 * Restart magicdev if it was stopped.
1397 */
1398void restart_magicdev_if_necessary()
1399{
1400    char *tmp = NULL;
1401
1402    if (g_magicdev_command && g_magicdev_command[0]) {
1403        mr_asprintf(tmp, "%s &", g_magicdev_command);
1404        paranoid_system(tmp);
1405        mr_free(tmp);
1406    }
1407}
1408
1409/* @} - end of utilityGroup */
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