source: MondoRescue/branches/3.2/mondo/src/common/libmondo-tools.c @ 3195

Last change on this file since 3195 was 3195, checked in by Bruno Cornec, 8 years ago
  • Fix tmpdir initialization as mkdtemp modify the existing string so it should not be freed too early.
  • Property svn:keywords set to Id
File size: 39.7 KB
Line 
1/*
2   $Id: libmondo-tools.c 3195 2013-09-30 07:07:23Z 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 3195 2013-09-30 07:07:23Z 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 =
369        (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 16 : 16) *
370        1024;
371
372    log_msg(1, "Post-param");
373    if (bkpinfo->backup_media_type == tape) {
374        if (whine_if_not_found("mt") == 1) {
375            fatal_error("Please install the mt command");
376        }
377        log_msg(1, "Tape");
378        if (bkpinfo->media_device == NULL) {
379            return(1);
380        }
381        mr_asprintf(tmp, "mt -f %s status", bkpinfo->media_device);
382        log_msg(1, "tmp = '%s'", tmp);
383        if (run_program_and_log_output(tmp, 3)) {
384            mr_free(tmp);
385            fatal_error
386                ("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.");
387        }
388        mr_free(tmp);
389    }
390    if (bkpinfo->backup_media_type == iso)
391        make_hole_for_dir(bkpinfo->isodir);
392
393    run_program_and_log_output("uname -a", 5);
394    run_program_and_log_output("cat /etc/*-release", 5);
395    run_program_and_log_output("cat /etc/*issue*", 5);
396#ifdef __FreeBSD__
397#else
398    run_program_and_log_output("cat /proc/cpuinfo", 5);
399    run_program_and_log_output
400        ("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc",
401         5);
402#endif
403
404    if (bkpinfo->use_lzo) {
405        strcpy(bkpinfo->zip_exe, "lzop");
406        strcpy(bkpinfo->zip_suffix, "lzo");
407    } else if (bkpinfo->use_gzip) {
408        strcpy(bkpinfo->zip_exe, "gzip");
409        strcpy(bkpinfo->zip_suffix, "gz");
410    } else if (bkpinfo->use_lzma) {
411        strcpy(bkpinfo->zip_exe, "lzma");
412        strcpy(bkpinfo->zip_suffix, "lzma");
413    } else if (bkpinfo->compression_level != 0) {
414        strcpy(bkpinfo->zip_exe, "bzip2");
415        strcpy(bkpinfo->zip_suffix, "bz2");
416    } else {
417        bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
418    }
419
420// DVD
421
422    if (bkpinfo->backup_media_type == dvd) {
423        if (find_home_of_exe("growisofs")) {
424            mr_asprintf(cdr_exe, "growisofs");
425        }                       // unlikely to be used
426        else {
427            fatal_error("Please install growisofs.");
428        }
429        if (bkpinfo->nonbootable_backup) {
430            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
431        } else if
432#ifdef __FreeBSD__
433            (TRUE)
434#else
435            (bkpinfo->make_cd_use_lilo)
436#endif
437#ifdef __IA64__
438    {
439        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
440    }
441#else
442    {
443        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
444    }
445#endif
446        else {
447            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
448        }
449        if (bkpinfo->manual_cd_tray) {
450            fatal_error("Manual CD tray + DVD not supported yet.");
451            // -m isn't supported by growisofs, BTW...
452        } else {
453            sprintf(bkpinfo->call_make_iso,
454                    "%s %s -Z %s . 2>> _ERR_",
455                    mondo_mkisofs_sz,
456                    "", bkpinfo->media_device);
457        }
458        mr_free(mondo_mkisofs_sz);
459        if (getenv ("SUDO_COMMAND")) {
460            mr_asprintf(command, "strings `which growisofs` | grep -c SUDO_COMMAND");
461            if (!strcmp(call_program_and_get_last_line_of_output(command), "1")) {
462                mr_free(command);
463                popup_and_OK("Fatal Error: Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
464                fatal_error("Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
465            }       
466            mr_free(command);
467        }
468        log_msg(2, "call_make_iso (DVD res) is ... %s", bkpinfo->call_make_iso);
469    }                           // end of DVD code
470
471// CD-R or CD-RW
472    if (bkpinfo->backup_media_type == cdrw
473        || bkpinfo->backup_media_type == cdr) {
474        if (!bkpinfo->manual_cd_tray) {
475            mr_asprintf(extra_cdrom_params, "-waiti ");
476        }
477        if (bkpinfo->backup_media_type == cdrw) {
478            mr_asprintf(extra_cdrom_params, "blank=fast ");
479        }
480        if (extra_cdrom_params == NULL) {
481            // If not initialized earlier, do it now
482            mr_asprintf(extra_cdrom_params, " ");
483        }
484        if (find_home_of_exe("cdrecord")) {
485            mr_asprintf(cdr_exe, "cdrecord");
486        } else if (find_home_of_exe("dvdrecord")) {
487            mr_asprintf(cdr_exe, "dvdrecord");
488        } else {
489            fatal_error("Please install either cdrecord or dvdrecord.");
490        }
491        if (find_home_of_exe("genisoimage")) {
492            mr_asprintf(isofs_cmd, "%s", MONDO_GENISOIMAGE_CMD);
493        } else {
494            mr_asprintf(isofs_cmd, "%s", MONDO_MKISOFS_CMD);
495        }
496        if (bkpinfo->nonbootable_backup) {
497            mr_asprintf(mondo_mkisofs_sz, "%s%s", isofs_cmd, MONDO_MKISOFS);
498        } else if
499#ifdef __FreeBSD__
500            (TRUE)
501#else
502            (bkpinfo->make_cd_use_lilo)
503#endif
504#ifdef __IA64__
505    {
506        mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_ELILO);
507    }
508#else
509    {
510        mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_LILO);
511    }
512#endif
513        else
514        {
515            mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_SYSLINUX);
516        }
517        mr_free(isofs_cmd);
518
519        if (bkpinfo->manual_cd_tray) {
520            if (bkpinfo->call_before_iso[0] == '\0') {
521            sprintf(bkpinfo->call_before_iso,
522                        "%s -o %s/"MONDO_TMPISOS" . 2>> _ERR_",
523                        mondo_mkisofs_sz, bkpinfo->tmpdir);
524                } else {
525                mr_asprintf(call_before_iso_user, "%s", bkpinfo->call_before_iso);
526                sprintf(bkpinfo->call_before_iso, "( %s -o %s/"MONDO_TMPISOS" . 2>> _ERR_ ; %s )", mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
527                mr_free(call_before_iso_user);
528            }
529            log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
530            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);
531        } else {
532            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);
533        }
534        mr_free(cdr_exe);
535        mr_free(mondo_mkisofs_sz);
536        mr_free(extra_cdrom_params);
537    }                           // end of CD code
538
539    if (bkpinfo->backup_media_type == iso) {
540
541/* Patch by Conor Daly <conor.daly@met.ie>
542 * 23-june-2004
543 * Break up isodir into iso_mnt and iso_path
544 * These will be used along with iso-dev at restore time
545 * to locate the ISOs where ever they're mounted
546 */
547
548        log_it("isodir = %s", bkpinfo->isodir);
549        mr_asprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1", bkpinfo->isodir);
550        log_it("command = %s", command);
551        mr_asprintf(iso_dev, "%s", call_program_and_get_last_line_of_output(command));
552        log_it("res of it = %s", iso_dev);
553        mr_asprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
554        write_one_liner_data_file(tmp, iso_dev);
555        mr_free(tmp);
556        mr_free(command);
557
558        mr_asprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3", iso_dev);
559        mr_free(iso_dev);
560
561        log_it("command = %s", command);
562        mr_asprintf(iso_mnt, "%s", call_program_and_get_last_line_of_output(command));
563        log_it("res of it = %s", iso_mnt);
564        mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
565        write_one_liner_data_file(tmp, iso_mnt);
566        mr_free(tmp);
567        mr_free(command);
568
569        log_it("isomnt: %s, %d", iso_mnt, strlen(iso_mnt));
570        mr_asprintf(iso_tmp, "%s", bkpinfo->isodir);
571        if (strlen(iso_tmp) < strlen(iso_mnt)) {
572            mr_asprintf(iso_path, "%s", "");
573        } else {
574            // If iso_mnt is only / then iso_path is the full dir
575            // (the formula bellow doesn't work in this case)
576            if (strcmp(iso_mnt, "/") == 0) {
577                mr_asprintf(iso_path, "%s", iso_tmp);
578            // else it's a part of iso_tmp
579            } else {
580                mr_asprintf(iso_path, "%s", iso_tmp + strlen(iso_mnt));
581            }
582        }
583        mr_free(iso_mnt);
584        mr_free(iso_tmp);
585
586        mr_asprintf(tmp, "%s/ISODIR", bkpinfo->tmpdir);
587        write_one_liner_data_file(tmp, iso_path);
588        mr_free(tmp);
589
590        log_it("isodir: %s", iso_path);
591        mr_free(iso_path);
592
593        mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
594        write_one_liner_data_file(tmp, bkpinfo->prefix);
595        mr_free(tmp);
596
597        log_it("iso-prefix: %s",  bkpinfo->prefix);
598
599/* End patch */
600    }                           // end of iso code
601
602    if (bkpinfo->backup_media_type == netfs) {
603        if (bkpinfo->netfs_mount) {
604            mr_asprintf(hostname, "%s", bkpinfo->netfs_mount);
605        } else {
606            log_it("netfs_mount is NULL");
607            retval++;
608            mr_asprintf(hostname, "");
609        }
610        colon = strchr(hostname, ':');
611        if (!colon) {
612            log_it("netfs mount doesn't have a colon in it");
613            retval++;
614        } else {
615            struct hostent *hent;
616
617            *colon = '\0';
618            colon = strchr(hostname, '@');
619            if (colon) {
620                *colon = '\0';
621                colon++;
622                hent = gethostbyname(colon);
623                mr_asprintf(bkpinfo->netfs_user,"%s", hostname);
624            } else {
625                hent = gethostbyname(hostname);
626            }
627            if (!hent) {
628                log_it("Can't resolve Network mount (%s): %s", hostname, hstrerror(h_errno));
629                retval++;
630            } else {
631                mr_asprintf(ip_address, "%s", inet_ntoa((struct in_addr) *((struct in_addr *) hent->h_addr)));
632                mr_strcat(ip_address, strchr(bkpinfo->netfs_mount, ':'));
633                mr_free(bkpinfo->netfs_mount);
634                bkpinfo->netfs_mount = ip_address;
635            }
636        }
637        mr_free(hostname);
638        store_netfs_config();
639    }
640
641    log_it("Finished processing incoming params");
642    if (retval) {
643        fprintf(stderr, "Type 'man mondoarchive' for help.\n");
644    }
645    if (bkpinfo->include_paths == NULL) {
646        mr_asprintf(bkpinfo->include_paths, "/");
647    }
648    g_backup_media_type = bkpinfo->backup_media_type;
649    return (retval);
650}
651
652
653
654/**
655 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
656 * Seeds the random-number generator, loads important modules, checks the sanity
657 * of the user's Linux distribution, and deletes logfile.
658 * @param bkpinfo The backup information structure. Will be initialized.
659 * @return number of errors (0 for success)
660 */
661int pre_param_configuration()
662{
663    int res = 0;
664    char *tmp = NULL;
665
666    make_hole_for_dir(MNT_CDROM);
667    assert(bkpinfo != NULL);
668    srandom((unsigned long) (time(NULL)));
669    insmod_crucial_modules();
670    if (bkpinfo->disaster_recovery) {
671        if (!does_nonMS_partition_exist()) {
672            fatal_error("I am in disaster recovery mode\nPlease don't run mondoarchive.");
673        }
674    }
675
676    mr_asprintf(tmp,"rm -Rf %s/changed.files*",MONDO_CACHE);
677    run_program_and_log_output(tmp, FALSE);
678    paranoid_free(tmp);
679    if (find_and_store_mondoarchives_home(g_mondo_home)) {
680        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");
681        res++;
682        return (res);
683    }
684    res += some_basic_system_sanity_checks();
685    if (res) {
686        log_it("Your distribution did not pass Mondo's sanity test.");
687    }
688    g_current_media_number = 1;
689    bkpinfo->postnuke_tarball[0] = '\0';
690    return (res);
691}
692
693/*  From busybox under GPLv2 */
694#ifndef HAVE_MKDTEMP
695/* This is now actually part of POSIX.1, but was only added in 2008 */
696char* mkdtemp(char *template)
697{
698    if (mktemp(template) == NULL || mkdir(template, 0700) != 0)
699        return NULL;
700    return template;
701}
702#endif
703
704void setup_tmpdir(char *path) {
705
706    char *tmp = NULL;
707    char *p = NULL;
708
709    if (bkpinfo->tmpdir[0] != '\0') {
710        /* purging a potential old tmpdir */
711        if (chdir("/tmp")) {
712            // FIXME
713        }
714        if (strstr(bkpinfo->tmpdir,"mondo.tmp.") != NULL) {
715            log_it("Purging old tmpdir %s", bkpinfo->tmpdir);
716            mr_asprintf(tmp,"rm -Rf %s",bkpinfo->tmpdir);
717        } else {
718            log_it("Purging old tmpdir %s/mondo.tmp.*", bkpinfo->tmpdir);
719            mr_asprintf(tmp,"rm -Rf %s/mondo.tmp.*",bkpinfo->tmpdir);
720        }
721        paranoid_system(tmp);
722        mr_free(tmp);
723    }
724
725    /* Always take in account arg first, then env, then default */
726    if (path != NULL) {
727        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", path);
728    } else if (getenv("TMPDIR")) {
729        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("TMPDIR"));
730    } else if (getenv("MRTMP")) {
731        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("MRTMP"));
732    } else {
733        mr_asprintf(tmp, "/tmp/mondo.tmp.XXXXXX");
734    }
735    p = mkdtemp(tmp);
736    if (p == NULL) {
737        printf("Failed to create global tmp directory %s for Mondo.",tmp);
738        mr_free(tmp);
739        finish(-1);
740    }
741    strcpy(bkpinfo->tmpdir,p);
742    mr_free(tmp);
743
744    log_it("bkpinfo->tmpdir is being set to %s", bkpinfo->tmpdir);
745
746    mr_asprintf(tmp, "mkdir -p %s/tmpfs", bkpinfo->tmpdir);
747    paranoid_system(tmp);
748    mr_free(tmp);
749}
750
751void setup_scratchdir(char *path) {
752
753    char *tmp = NULL;
754    char *p = NULL;
755
756    if (bkpinfo->scratchdir != NULL) {
757        /* purging a potential old scratchdir */
758        if (chdir("/tmp")) {
759            // FIXME
760        }
761        if (strstr(bkpinfo->scratchdir,"mondo.scratch.") != NULL) {
762            log_it("Purging old scratchdir %s", bkpinfo->scratchdir);
763            mr_asprintf(tmp,"rm -Rf %s",bkpinfo->scratchdir);
764        } else {
765            log_it("Purging old scratchdir %s/mondo.scratch.*", bkpinfo->scratchdir);
766            mr_asprintf(tmp,"rm -Rf %s/mondo.scratch.*",bkpinfo->scratchdir);
767        }
768        paranoid_system(tmp);
769        mr_free(tmp);
770    }
771
772    /* Always take in account arg first, then env, then default */
773    if (path != NULL) {
774        mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", path);
775    } else if (getenv("MRSCRATCH")) {
776        mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", getenv("MRSCRATCH"));
777    } else {
778        mr_asprintf(tmp, "/tmp/mondo.scratch.XXXXXX");
779    }
780    p = mkdtemp(tmp);
781    if (p == NULL) {
782        log_it("Failed to create global scratch directory %s for Mondo.",tmp);
783        finish(-1);
784    }
785    strcpy(bkpinfo->scratchdir,p);
786    log_it("bkpinfo->scratchdir is being set to %s", bkpinfo->scratchdir);
787    paranoid_free(tmp);
788
789    mr_asprintf(tmp, "mkdir -p %s", bkpinfo->scratchdir);
790    paranoid_system(tmp);
791    mr_free(tmp);
792}
793
794
795/**
796 * Reset all fields of the backup information structure to a sensible default.
797 * @param bkpinfo The @c bkpinfo to reset.
798 */
799void reset_bkpinfo()
800{
801    assert(bkpinfo != NULL);
802    memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
803
804    bkpinfo->media_device[0] = '\0';
805    bkpinfo->media_size = -1;
806    bkpinfo->boot_loader = '\0';
807    bkpinfo->boot_device[0] = '\0';
808    bkpinfo->zip_exe[0] = '\0';
809    bkpinfo->zip_suffix[0] = '\0';
810    bkpinfo->image_devs[0] = '\0';
811    bkpinfo->compression_level = 3;
812    bkpinfo->use_lzo = FALSE;
813    bkpinfo->use_gzip = FALSE;
814    bkpinfo->use_lzma = FALSE;
815    bkpinfo->verify_data = FALSE;
816    bkpinfo->backup_data = FALSE;
817    bkpinfo->restore_data = FALSE;
818    bkpinfo->use_star = FALSE;
819    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
820   
821    /*  We need tmpdir as early as possible for further function calls */
822    bkpinfo->tmpdir[0] = '\0';          // Really setup after
823    bkpinfo->scratchdir[0] = '\0';          // Really setup after
824    setup_tmpdir(NULL);
825    setup_scratchdir(NULL);
826
827    bkpinfo->disaster_recovery = am_I_in_disaster_recovery_mode();
828    if (bkpinfo->disaster_recovery) {
829        strcpy(bkpinfo->isodir, "/");
830    } else {
831        strcpy(bkpinfo->isodir, MONDO_CACHE);
832    }
833    strcpy(bkpinfo->prefix, STD_PREFIX);
834    bkpinfo->optimal_set_size = 0;
835    bkpinfo->backup_media_type = none;
836    bkpinfo->make_filelist = TRUE;  // unless -J supplied to mondoarchive
837    bkpinfo->exclude_paths = NULL;
838    bkpinfo->include_paths = NULL;
839    bkpinfo->exclude_devs = NULL;
840    bkpinfo->restore_path[0] = '\0';
841    bkpinfo->call_before_iso[0] = '\0';
842    bkpinfo->call_make_iso[0] = '\0';
843    bkpinfo->call_burn_iso[0] = '\0';
844    bkpinfo->call_after_iso[0] = '\0';
845    bkpinfo->kernel_path[0] = '\0';
846    bkpinfo->netfs_mount = NULL;
847    bkpinfo->netfs_proto = NULL;
848    bkpinfo->netfs_user = NULL;
849    bkpinfo->netfs_remote_dir = NULL;
850    bkpinfo->postnuke_tarball[0] = '\0';
851    bkpinfo->subdir = NULL;
852    bkpinfo->wipe_media_first = FALSE;
853    bkpinfo->differential = 0;
854    bkpinfo->please_dont_eject = FALSE;
855    bkpinfo->cdrw_speed = 0;
856    bkpinfo->manual_cd_tray = FALSE;
857    bkpinfo->nonbootable_backup = FALSE;
858    bkpinfo->make_cd_use_lilo = FALSE;
859    bkpinfo->use_obdr = FALSE;
860    bkpinfo->restore_mode = interactive;
861}
862
863
864/**
865 * Get the remaining free space (in MB) on @p partition.
866 * @param partition The partition to check free space on (either a device or a mountpoint).
867 * @return The free space on @p partition, in MB.
868 */
869long free_space_on_given_partition(char *partition)
870{
871    char *out_sz = NULL;
872    char *command = NULL;
873    long res;
874
875    assert_string_is_neither_NULL_nor_zerolength(partition);
876
877    mr_asprintf(command, "df -m -P %s 1> /dev/null 2> /dev/null", partition);
878    if (system(command)) {
879        mr_free(command);
880        return (-1);
881    }                           // partition does not exist
882    mr_free(command);
883
884    mr_asprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4", partition);
885    mr_asprintf(out_sz, "%s", call_program_and_get_last_line_of_output(command));
886    mr_free(command);
887
888    if (strlen(out_sz) == 0) {
889        mr_free(out_sz);
890        return (-1);
891    }                           // error within df, probably
892    res = atol(out_sz);
893    mr_free(out_sz);
894    return (res);
895}
896
897
898
899/**
900 * Check the user's system for sanity. Checks performed:
901 * - make sure user has enough RAM (32mb required, 64mb recommended)
902 * - make sure user has enough free space in @c /
903 * - check kernel for ramdisk support
904 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
905 * - make sure CD-ROM is unmounted
906 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
907 *
908 * @return number of problems with the user's setup (0 for success)
909 */
910int some_basic_system_sanity_checks()
911{
912
913    /*@ buffers ************ */
914    char *tmp = NULL;
915
916    /*@ int's *************** */
917    int retval = 0;
918
919    mvaddstr_and_log_it(g_currentY, 0, "Checking sanity of your Linux distribution");
920#ifndef __FreeBSD__
921    if (system("which mkfs.vfat 2> /dev/null 1> /dev/null")
922        && !system("which mkfs.msdos 2> /dev/null 1> /dev/null")) {
923        log_it("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
924        run_program_and_log_output("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
925    }
926    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
927    if (atol(tmp) < 35000) {
928        retval++;
929        log_to_screen("You must have at least 32MB of RAM to use Mondo.");
930    }
931    if (atol(tmp) < 66000) {
932        log_to_screen("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
933    }
934    mr_free(tmp);
935#endif
936
937    if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
938        retval++;
939        log_to_screen
940            ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
941        fatal_error
942            ("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. :)");
943    }
944#ifndef __FreeBSD__
945    if (run_program_and_log_output
946        ("grep ramdisk /proc/devices", FALSE)) {
947        /* Some SuSE have ramdisk as modules, so insert it first, then test again */
948        run_program_and_log_output("modprobe brd 2> /dev/null > /dev/null",FALSE);
949        if (run_program_and_log_output("grep ramdisk /proc/devices", FALSE)) {
950            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 a failsafe kernel. Are you?")) {
951                //          retval++;
952                log_to_screen("It looks as if your kernel lacks ramdisk and initrd support.");
953                log_to_screen("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
954            }
955        }
956    }
957#endif
958    retval += whine_if_not_found(MKE2FS_OR_NEWFS);
959    if (system("which genisoimage > /dev/null 2> /dev/null")) {
960        retval += whine_if_not_found("mkisofs");
961    }
962    if (system("which wodim > /dev/null 2> /dev/null")) {
963        retval += whine_if_not_found("cdrecord");
964    }
965    retval += whine_if_not_found("bzip2");
966    retval += whine_if_not_found("gzip");
967    retval += whine_if_not_found("awk");
968    retval += whine_if_not_found("md5sum");
969    retval += whine_if_not_found("strings");
970    retval += whine_if_not_found("mindi");
971    retval += whine_if_not_found("buffer");
972
973    // abort if Windows partition but no ms-sys and parted
974    if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -vE \"/dev/fd|nexdisk\"", 0)) {
975        log_to_screen("I think you have a Windows 9x partition.");
976        retval += whine_if_not_found("parted");
977    }
978
979    if (!find_home_of_exe("cmp")) {
980        whine_if_not_found("cmp");
981    }
982    run_program_and_log_output("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
983    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("mount | grep -E \"cdr(om|w)\""));
984    if (strcmp("", tmp)) {
985        if (strstr(tmp, "autofs")) {
986            log_to_screen("Your CD-ROM is mounted via autofs. I therefore cannot tell");
987            log_to_screen("if a CD actually is inserted. If a CD is inserted, please");
988            log_to_screen("eject it. Thank you.");
989            log_it("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
990        } else
991            if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
992            retval++;
993            mr_free(tmp);
994            fatal_error("Your CD-ROM drive is mounted. Please unmount it.");
995        }
996    }
997    mr_free(tmp);
998
999    run_program_and_log_output("cat /etc/fstab", 5);
1000#ifdef __FreeBSD__
1001    run_program_and_log_output("vinum printconfig", 5);
1002#else
1003    run_program_and_log_output("cat /etc/raidtab", 5);
1004#endif
1005
1006    if (run_program_and_log_output("mindi -V", 1)) {
1007        log_to_screen("Could not ascertain mindi's version number.");
1008        log_to_screen("You have not installed Mondo and/or Mindi properly.");
1009        log_to_screen("Please uninstall and reinstall them both.");
1010        fatal_error("Please reinstall Mondo and Mindi.");
1011    }
1012    mr_asprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test", bkpinfo->tmpdir);
1013    if (run_program_and_log_output(tmp, 5)) {
1014        log_to_screen("%s failed for some reason.", tmp);
1015        mr_free(tmp);
1016        log_to_screen("Please run that command by hand and examine /var/log/mindi.log");
1017        log_to_screen("for more information. Perhaps your /etc/fstab file is insane.");
1018        log_to_screen("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
1019        retval++;
1020    }
1021    mr_free(tmp);
1022
1023    if (!run_program_and_log_output("parted2fdisk -l 2>/dev/null | grep -i raid", 1) && !does_file_exist("/etc/raidtab")) {
1024        log_to_screen("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1025        create_raidtab_from_mdstat(MDSTAT_FILE,"/etc/raidtab");
1026    }
1027
1028    if (retval) {
1029        mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1030    } else {
1031        mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1032    }
1033    return (retval);
1034}
1035
1036/**
1037 * Retrieve the line containing @p label from the config file.
1038 * @param config_file The file to read from, usually @c /tmp/mondo-restore.cfg.
1039 * @param label What to read from the file.
1040 * @param value Where to put it.
1041 * @return 0 for success, 1 for failure.
1042 */
1043int read_cfg_var(char *config_file, char *label, char *value)
1044{
1045    /*@ buffer ****************************************************** */
1046    char *command = NULL;
1047
1048    /*@ end vars *************************************************** */
1049
1050    assert_string_is_neither_NULL_nor_zerolength(config_file);
1051    assert_string_is_neither_NULL_nor_zerolength(label);
1052    if (!does_file_exist(config_file)) {
1053        log_to_screen("(read_cfg_var) Cannot find %s config file", config_file);
1054        value[0] = '\0';
1055        return (1);
1056    } else if ((value != NULL) && (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))) {
1057        log_msg(2, "FYI, I can't read new value for %s - already got %s", label, value);
1058        return (0);
1059    } else {
1060        mr_asprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5",
1061                label, config_file);
1062        strcpy(value, call_program_and_get_last_line_of_output(command));
1063        mr_free(command);
1064
1065        log_msg(4, "Configuration item %s is %s", label, value);
1066        if (strlen(value) == 0) {
1067            return (1);
1068        } else {
1069            return (0);
1070        }
1071    }
1072}
1073
1074
1075
1076/**
1077 * Remount @c supermount if it was unmounted earlier.
1078 */
1079void remount_supermounts_if_necessary()
1080{
1081    if (g_remount_cdrom_at_end) {
1082        run_program_and_log_output("mount " MNT_CDROM, FALSE);
1083    }
1084    if (g_remount_floppy_at_end) {
1085        run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1086    }
1087}
1088
1089/**
1090 * Unmount @c supermount if it's mounted.
1091 */
1092void unmount_supermounts_if_necessary()
1093{
1094    if (run_program_and_log_output
1095        ("mount | grep cdrom | grep super", FALSE) == 0) {
1096        g_remount_cdrom_at_end = TRUE;
1097        run_program_and_log_output("umount " MNT_CDROM, FALSE);
1098    }
1099    if (run_program_and_log_output
1100        ("mount | grep floppy | grep super", FALSE) == 0) {
1101        g_remount_floppy_at_end = TRUE;
1102        run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1103    }
1104}
1105
1106/**
1107 * Whether we had to stop autofs (if so, restart it at end).
1108 */
1109bool g_autofs_stopped = FALSE;
1110
1111/**
1112 * Path to the autofs initscript ("" if none exists).
1113 */
1114char g_autofs_exe[MAX_STR_LEN];
1115
1116/**
1117 * Autofs initscript in Xandros Linux distribution.
1118 */
1119#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1120
1121/**
1122 * Autofs initscript in most Linux distributions.
1123 */
1124#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1125
1126/**
1127 * If autofs is mounted, stop it (restart at end).
1128 */
1129void stop_autofs_if_necessary()
1130{
1131    char *tmp = NULL;
1132
1133    g_autofs_exe[0] = '\0';
1134    if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1135        strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1136    } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1137        strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1138    }
1139
1140    if (!g_autofs_exe[0]) {
1141        log_msg(3, "No autofs detected.");
1142    } else {
1143        log_msg(3, "%s --- autofs detected", g_autofs_exe);
1144        // FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1145        mr_asprintf(tmp, "%s stop", g_autofs_exe);
1146        if (run_program_and_log_output(tmp, 2)) {
1147            log_it("Failed to stop autofs - I assume it wasn't running");
1148        } else {
1149            g_autofs_stopped = TRUE;
1150            log_it("Stopped autofs OK");
1151        }
1152        mr_free(tmp);
1153    }
1154}
1155
1156/**
1157 * If autofs was stopped earlier, restart it.
1158 */
1159void restart_autofs_if_necessary()
1160{
1161    char *tmp = NULL;
1162
1163    if (!g_autofs_stopped || !g_autofs_exe[0]) {
1164        log_msg(3, "No autofs detected.");
1165        return;
1166    }
1167    mr_asprintf(tmp, "%s start", g_autofs_exe);
1168    if (run_program_and_log_output(tmp, 2)) {
1169        log_it("Failed to start autofs");
1170    } else {
1171        g_autofs_stopped = FALSE;
1172        log_it("Started autofs OK");
1173    }
1174    mr_free(tmp);
1175}
1176
1177
1178/**
1179 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1180 */
1181void mount_boot_if_necessary() {
1182    char *tmp = NULL;
1183    char *command = NULL;
1184
1185    log_msg(1, "Started sub");
1186    log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1187    g_boot_mountpt[0] = '\0';
1188    log_msg(4, "Done. Great. Seeting command to something");
1189    mr_asprintf(command, "%s", "grep -v \":\" /etc/fstab | grep -vE '^#.*$' | grep -E \"[   ]/boot[     ]\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1190    log_msg(4, "Cool. Command = '%s'", command);
1191    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1192    mr_free(command);
1193
1194    log_msg(4, "tmp = '%s'", tmp);
1195    log_it("/boot is at %s according to /etc/fstab", tmp);
1196    mr_asprintf(command, "mount | grep -Ew '/boot'");
1197    mr_free(tmp);
1198
1199    mr_asprintf(tmp, call_program_and_get_last_line_of_output(command));
1200    mr_free(command);
1201
1202    if (!strcmp(tmp,"")) {
1203        if ((strstr(tmp, "LABEL=") != NULL) || (strstr(tmp,"UUID=") != NULL)) {
1204            if (!run_program_and_log_output("mount /boot", 5)) {
1205                strcpy(g_boot_mountpt, "/boot");
1206                log_msg(1, "Mounted /boot");
1207            } else {
1208                log_it("...ignored cos it's a label or uuid :-)");
1209            }
1210        } else {
1211            mr_asprintf(command, "mount | grep -E '^%s'", tmp);
1212            log_msg(3, "command = %s", command);
1213            if (run_program_and_log_output(command, 5)) {
1214                strcpy(g_boot_mountpt, tmp);
1215                mr_free(tmp);
1216                log_it("%s (your /boot partition) is not mounted. I'll mount it before backing up", g_boot_mountpt);
1217
1218                mr_asprintf(tmp, "mount %s", g_boot_mountpt);
1219                if (run_program_and_log_output(tmp, 5)) {
1220                    g_boot_mountpt[0] = '\0';
1221                    log_msg(1, "Plan B");
1222                    if (!run_program_and_log_output("mount /boot", 5)) {
1223                        strcpy(g_boot_mountpt, "/boot");
1224                        log_msg(1, "Plan B worked");
1225                    } else {
1226                        log_msg(1,
1227                            "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1228                    }
1229                }
1230            }
1231            mr_free(command);
1232        }
1233    }
1234    mr_free(tmp);
1235    log_msg(1, "Ended sub");
1236}
1237
1238
1239/**
1240 * If we mounted /boot earlier, unmount it.
1241 */
1242void unmount_boot_if_necessary()
1243{
1244    char *tmp = NULL;
1245
1246    log_msg(3, "starting");
1247    if (g_boot_mountpt[0]) {
1248        mr_asprintf(tmp, "umount %s", g_boot_mountpt);
1249        if (run_program_and_log_output(tmp, 5)) {
1250            log_it("WARNING - unable to unmount /boot");
1251        }
1252        mr_free(tmp);
1253    }
1254    log_msg(3, "leaving");
1255}
1256
1257
1258
1259/**
1260 * Write a line to a configuration file. Writes a line of the form,
1261 * @c label @c value.
1262 * @param config_file The file to write to. Usually @c mondo-restore.cfg.
1263 * @param label What to call this bit of data you're writing.
1264 * @param value The bit of data you're writing.
1265 * @return 0 for success, 1 for failure.
1266 */
1267int write_cfg_var(char *config_file, char *label, char *value)
1268{
1269    /*@ buffers ***************************************************** */
1270    char *command = NULL;
1271    char *tempfile = NULL;
1272
1273
1274    /*@ end vars *************************************************** */
1275    assert_string_is_neither_NULL_nor_zerolength(config_file);
1276    assert_string_is_neither_NULL_nor_zerolength(label);
1277    assert(value != NULL);
1278    if (!does_file_exist(config_file)) {
1279        log_to_screen("(write_cfg_file) Cannot find %s config file", config_file);
1280        return (1);
1281    }
1282    mr_asprintf(tempfile, "%s/mojo-jojo.blah", bkpinfo->tmpdir);
1283    if (does_file_exist(config_file)) {
1284        mr_asprintf(command, "grep -vE '^%s .*$' %s > %s", label, config_file, tempfile);
1285        paranoid_system(command);
1286        mr_free(command);
1287    }
1288    mr_asprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1289    paranoid_system(command);
1290    mr_free(command);
1291
1292    mr_asprintf(command, "mv -f %s %s", tempfile, config_file);
1293    paranoid_system(command);
1294    mr_free(command);
1295    unlink(tempfile);
1296    mr_free(tempfile);
1297    return (0);
1298}
1299
1300
1301/**
1302 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1303 * information to the logfile.
1304 */
1305void standard_log_debug_msg(int debug_level, const char *szFile, const char *szFunction, int nLine, const char *fmt, ...) {
1306
1307    va_list args;
1308    static int depth = 0;
1309    FILE *fout;
1310
1311    if (depth > 5) {
1312        depth--;
1313        return;
1314    }
1315    depth++;
1316
1317    if (debug_level <= g_loglevel) {
1318        if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1319            return;
1320        }
1321
1322        // add tabs to distinguish log levels
1323        if (debug_level > 0) {
1324            fprintf(fout, "DBG%d: ", debug_level);
1325            if (getpid() == g_main_pid)
1326                fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction, nLine);
1327            else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1328                fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction, nLine);
1329            else
1330                fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile, szFunction, nLine);
1331        } else {
1332            fprintf(fout, "INFO: ");
1333        }
1334        va_start(args, fmt);
1335        vfprintf(fout, fmt, args);
1336        va_end(args);
1337
1338        fprintf(fout, "\n");
1339        paranoid_fclose(fout);
1340    }
1341    depth--;
1342}
1343
1344/**
1345 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1346 */
1347void (*log_debug_msg) (int, const char *, const char *, int, const char *, ...) = standard_log_debug_msg;
1348
1349
1350/**
1351 * Allocate or free important globals, depending on @p mal.
1352 * @param mal If TRUE, malloc; if FALSE, free.
1353 */
1354void do_libmondo_global_strings_thing(int mal)
1355{
1356    if (mal) {
1357        malloc_string(g_boot_mountpt);
1358        malloc_string(g_mondo_home);
1359        malloc_string(g_serial_string);
1360        malloc_string(g_magicdev_command);
1361    } else {
1362        paranoid_free(g_boot_mountpt);
1363        paranoid_free(g_mondo_home);
1364        paranoid_free(g_magicdev_command);
1365
1366        mr_free(g_serial_string);
1367    }
1368}
1369
1370/**
1371 * Allocate important globals.
1372 * @see do_libmondo_global_strings_thing
1373 */
1374void malloc_libmondo_global_strings(void)
1375{
1376    do_libmondo_global_strings_thing(1);
1377}
1378
1379/**
1380 * Free important globals.
1381 * @see do_libmondo_global_strings_thing
1382 */
1383void free_libmondo_global_strings(void)
1384{
1385    do_libmondo_global_strings_thing(0);
1386}
1387
1388
1389
1390/**
1391 * Stop @c magicdev if it's running.
1392 * The command used to start it is saved in @p g_magicdev_command.
1393 */
1394void stop_magicdev_if_necessary()
1395{
1396    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"));
1397    if (g_magicdev_command[0]) {
1398        log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1399        paranoid_system("killall magicdev");
1400    }
1401}
1402
1403
1404/**
1405 * Restart magicdev if it was stopped.
1406 */
1407void restart_magicdev_if_necessary()
1408{
1409    char *tmp = NULL;
1410
1411    if (g_magicdev_command && g_magicdev_command[0]) {
1412        mr_asprintf(tmp, "%s &", g_magicdev_command);
1413        paranoid_system(tmp);
1414        mr_free(tmp);
1415    }
1416}
1417
1418/* @} - end of utilityGroup */
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