source: branches/3.2/mondo/src/common/libmondo-tools.c @ 3373

Last change on this file since 3373 was 3373, checked in by Bruno Cornec, 5 years ago

Change the bkpinfo->boot_device from statically allocated to dynamically allocated

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File size: 39.1 KB
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1/*
2   $Id: libmondo-tools.c 3373 2015-04-27 14:25:28Z 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 3373 2015-04-27 14:25:28Z 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 = FALSE;             ///< 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 *isofs_cmd = NULL;
354    int retval = 0;
355    char *cdr_exe = NULL;
356    char *tmp = NULL;
357    char *call_before_iso_user = NULL;
358    char *iso_dev = NULL;
359    char *iso_mnt = NULL;
360    char *iso_tmp = NULL;
361    char *iso_dir = NULL;
362
363    assert(bkpinfo != NULL);
364
365    bkpinfo->optimal_set_size = (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 16 : 16) * 1024L;
366
367    log_msg(1, "Post-param");
368    if (bkpinfo->backup_media_type == tape) {
369        if (whine_if_not_found("mt") == 1) {
370            fatal_error("Please install the mt command");
371        }
372        log_msg(1, "Tape");
373        if (bkpinfo->media_device == NULL) {
374            return(1);
375        }
376        mr_asprintf(tmp, "mt -f %s status", bkpinfo->media_device);
377        log_msg(1, "tmp = '%s'", tmp);
378        if (run_program_and_log_output(tmp, 3)) {
379            mr_free(tmp);
380            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.");
381        }
382        mr_free(tmp);
383    }
384    if (bkpinfo->backup_media_type == iso)
385        make_hole_for_dir(bkpinfo->isodir);
386
387    run_program_and_log_output("uname -a", 5);
388    run_program_and_log_output("cat /etc/*-release", 5);
389    run_program_and_log_output("cat /etc/*issue*", 5);
390#ifdef __FreeBSD__
391#else
392    run_program_and_log_output("cat /proc/cpuinfo", 5);
393    /*
394    run_program_and_log_output("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc", 5);
395    */
396#endif
397
398    if (bkpinfo->use_lzo) {
399        strcpy(bkpinfo->zip_exe, "lzop");
400        strcpy(bkpinfo->zip_suffix, "lzo");
401    } else if (bkpinfo->use_gzip) {
402        strcpy(bkpinfo->zip_exe, "gzip");
403        strcpy(bkpinfo->zip_suffix, "gz");
404    } else if (bkpinfo->use_lzma) {
405        strcpy(bkpinfo->zip_exe, "lzma");
406        strcpy(bkpinfo->zip_suffix, "lzma");
407    } else if (bkpinfo->compression_level != 0) {
408        strcpy(bkpinfo->zip_exe, "bzip2");
409        strcpy(bkpinfo->zip_suffix, "bz2");
410    } else {
411        bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
412    }
413
414// DVD
415
416    if (bkpinfo->backup_media_type == dvd) {
417        if (find_home_of_exe("growisofs")) {
418            mr_asprintf(cdr_exe, "growisofs");
419        }                       // unlikely to be used
420        else {
421            fatal_error("Please install growisofs.");
422        }
423        if (bkpinfo->nonbootable_backup) {
424            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
425        } else if
426#ifdef __FreeBSD__
427            (TRUE)
428#else
429            (bkpinfo->make_cd_use_lilo)
430#endif
431#ifdef __IA64__
432    {
433        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
434    }
435#else
436    {
437        mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
438    }
439#endif
440        else {
441            mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
442        }
443        if (bkpinfo->manual_cd_tray) {
444            fatal_error("Manual CD tray + DVD not supported yet.");
445            // -m isn't supported by growisofs, BTW...
446        } else {
447            sprintf(bkpinfo->call_make_iso, "%s %s -Z %s . 2>> _ERR_", mondo_mkisofs_sz, "", bkpinfo->media_device);
448        }
449        mr_free(mondo_mkisofs_sz);
450        if (getenv ("SUDO_COMMAND")) {
451            mr_asprintf(command, "strings `which growisofs` | grep -c SUDO_COMMAND");
452            if (!strcmp(call_program_and_get_last_line_of_output(command), "1")) {
453                mr_free(command);
454                popup_and_OK("Fatal Error: Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
455                fatal_error("Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
456            }       
457            mr_free(command);
458        }
459        log_msg(2, "call_make_iso (DVD res) is ... %s", bkpinfo->call_make_iso);
460    }                           // end of DVD code
461
462// CD-R or CD-RW
463    if (bkpinfo->backup_media_type == cdrw
464        || bkpinfo->backup_media_type == cdr) {
465        if (!bkpinfo->manual_cd_tray) {
466            mr_asprintf(extra_cdrom_params, "-waiti ");
467        }
468        if (bkpinfo->backup_media_type == cdrw) {
469            mr_asprintf(extra_cdrom_params, "blank=fast ");
470        }
471        if (extra_cdrom_params == NULL) {
472            // If not initialized earlier, do it now
473            mr_asprintf(extra_cdrom_params, " ");
474        }
475        if (find_home_of_exe("cdrecord")) {
476            mr_asprintf(cdr_exe, "cdrecord");
477        } else if (find_home_of_exe("dvdrecord")) {
478            mr_asprintf(cdr_exe, "dvdrecord");
479        } else {
480            fatal_error("Please install either cdrecord or dvdrecord.");
481        }
482        if (find_home_of_exe("genisoimage")) {
483            mr_asprintf(isofs_cmd, "%s", MONDO_GENISOIMAGE_CMD);
484        } else {
485            mr_asprintf(isofs_cmd, "%s", MONDO_MKISOFS_CMD);
486        }
487        if (bkpinfo->nonbootable_backup) {
488            mr_asprintf(mondo_mkisofs_sz, "%s%s", isofs_cmd, MONDO_MKISOFS);
489        } else if
490#ifdef __FreeBSD__
491            (TRUE)
492#else
493            (bkpinfo->make_cd_use_lilo)
494#endif
495#ifdef __IA64__
496    {
497        mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_ELILO);
498    }
499#else
500    {
501        mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_LILO);
502    }
503#endif
504        else
505        {
506            mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_SYSLINUX);
507        }
508        mr_free(isofs_cmd);
509
510        if (bkpinfo->manual_cd_tray) {
511            if (bkpinfo->call_before_iso[0] == '\0') {
512                sprintf(bkpinfo->call_before_iso, "%s -o %s/"MONDO_TMPISOS" . 2>> _ERR_", mondo_mkisofs_sz, bkpinfo->tmpdir);
513            } else {
514                mr_asprintf(call_before_iso_user, "%s", bkpinfo->call_before_iso);
515                sprintf(bkpinfo->call_before_iso, "( %s -o %s/"MONDO_TMPISOS" . 2>> _ERR_ ; %s )", mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
516                mr_free(call_before_iso_user);
517            }
518            log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
519            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);
520        } else {
521            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);
522        }
523        mr_free(cdr_exe);
524        mr_free(mondo_mkisofs_sz);
525        mr_free(extra_cdrom_params);
526    }                           // end of CD code
527
528    if (bkpinfo->backup_media_type == iso) {
529
530/* Break up isodir into iso_mnt and iso_dir
531 * These will be used along with iso-dev at restore time
532 * to locate the ISOs where ever they're mounted
533 */
534
535        log_it("isodir = %s", bkpinfo->isodir);
536        mr_asprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1", bkpinfo->isodir);
537        log_it("command = %s", command);
538        mr_asprintf(iso_dev, "%s", call_program_and_get_last_line_of_output(command));
539        log_it("res of it = %s", iso_dev);
540        mr_asprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
541        write_one_liner_data_file(tmp, iso_dev);
542        mr_free(tmp);
543        mr_free(command);
544
545        mr_asprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3", iso_dev);
546        mr_free(iso_dev);
547
548        log_it("command = %s", command);
549        mr_asprintf(iso_mnt, "%s", call_program_and_get_last_line_of_output(command));
550        log_it("res of it = %s", iso_mnt);
551        mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
552        write_one_liner_data_file(tmp, iso_mnt);
553        mr_free(tmp);
554        mr_free(command);
555
556        log_it("iso_mnt: %s, %d", iso_mnt, strlen(iso_mnt));
557        mr_asprintf(iso_tmp, "%s", bkpinfo->isodir);
558        if (strlen(iso_tmp) < strlen(iso_mnt)) {
559            mr_asprintf(iso_dir, "%s", "");
560        } else {
561            // If iso_mnt is only / then iso_dir is the full dir
562            // (the formula bellow doesn't work in this case)
563            if (strcmp(iso_mnt, "/") == 0) {
564                mr_asprintf(iso_dir, "%s", iso_tmp);
565            // else it's a part of iso_tmp
566            } else {
567                mr_asprintf(iso_dir, "%s", iso_tmp + strlen(iso_mnt));
568            }
569        }
570        mr_free(iso_mnt);
571        mr_free(iso_tmp);
572
573        mr_asprintf(tmp, "%s/ISO-DIR", bkpinfo->tmpdir);
574        write_one_liner_data_file(tmp, iso_dir);
575        mr_free(tmp);
576
577        log_it("iso-dir: %s", iso_dir);
578        mr_free(iso_dir);
579
580        mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
581        write_one_liner_data_file(tmp, bkpinfo->prefix);
582        mr_free(tmp);
583
584        log_it("iso-prefix: %s",  bkpinfo->prefix);
585
586/* End patch */
587    }                           // end of iso code
588
589    if (bkpinfo->backup_media_type == netfs) {
590        mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
591        write_one_liner_data_file(tmp, bkpinfo->prefix);
592        mr_free(tmp);
593
594        mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
595        write_one_liner_data_file(tmp, bkpinfo->isodir);
596        mr_free(tmp);
597
598        mr_asprintf(tmp, "%s/ISO-DIR", bkpinfo->tmpdir);
599        write_one_liner_data_file(tmp, bkpinfo->netfs_remote_dir);
600        mr_free(tmp);
601
602        if (bkpinfo->netfs_mount) {
603            mr_asprintf(tmp, "%s/NETFS-SERVER-MOUNT", bkpinfo->tmpdir);
604            write_one_liner_data_file(tmp, bkpinfo->netfs_mount);
605            mr_free(tmp);
606        } else {
607            log_it("netfs_mount is NULL");
608            retval++;
609        }
610    }
611
612    log_it("Finished processing incoming params");
613    if (retval) {
614        fprintf(stderr, "Type 'man mondoarchive' for help.\n");
615    }
616    if (bkpinfo->include_paths == NULL) {
617        mr_asprintf(bkpinfo->include_paths, "/");
618    }
619    g_backup_media_type = bkpinfo->backup_media_type;
620    return (retval);
621}
622
623
624
625/**
626 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
627 * Seeds the random-number generator, loads important modules, checks the sanity
628 * of the user's Linux distribution, and deletes logfile.
629 * @param bkpinfo The backup information structure. Will be initialized.
630 * @return number of errors (0 for success)
631 */
632int pre_param_configuration()
633{
634    int res = 0;
635    char *tmp = NULL;
636
637    make_hole_for_dir(MNT_CDROM);
638    assert(bkpinfo != NULL);
639    srandom((unsigned long) (time(NULL)));
640    insmod_crucial_modules();
641    if (bkpinfo->disaster_recovery) {
642        if (!does_nonMS_partition_exist()) {
643            fatal_error("I am in disaster recovery mode\nPlease don't run mondoarchive.");
644        }
645    }
646
647    mr_asprintf(tmp,"rm -Rf %s/changed.files*",MONDO_CACHE);
648    run_program_and_log_output(tmp, FALSE);
649    paranoid_free(tmp);
650    if (find_and_store_mondoarchives_home(g_mondo_home)) {
651        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");
652        res++;
653        return (res);
654    }
655    res += some_basic_system_sanity_checks();
656    if (res) {
657        log_it("Your distribution did not pass Mondo's sanity test.");
658    }
659    g_current_media_number = 1;
660    bkpinfo->postnuke_tarball[0] = '\0';
661    return (res);
662}
663
664/*  From busybox under GPLv2 */
665#ifndef HAVE_MKDTEMP
666/* This is now actually part of POSIX.1, but was only added in 2008 */
667char* mkdtemp(char *template)
668{
669    if (mktemp(template) == NULL || mkdir(template, 0700) != 0)
670        return NULL;
671    return template;
672}
673#endif
674
675void setup_tmpdir(char *path) {
676
677    char *tmp = NULL;
678    char *p = NULL;
679
680    if (bkpinfo->tmpdir[0] != '\0') {
681        /* purging a potential old tmpdir */
682        if (chdir("/tmp")) {
683            // FIXME
684        }
685        if (strstr(bkpinfo->tmpdir,"mondo.tmp.") != NULL) {
686            log_it("Purging old tmpdir %s", bkpinfo->tmpdir);
687            mr_asprintf(tmp,"rm -Rf %s",bkpinfo->tmpdir);
688        } else {
689            log_it("Purging old tmpdir %s/mondo.tmp.*", bkpinfo->tmpdir);
690            mr_asprintf(tmp,"rm -Rf %s/mondo.tmp.*",bkpinfo->tmpdir);
691        }
692        paranoid_system(tmp);
693        mr_free(tmp);
694    }
695
696    /* Always take in account arg first, then env, then default */
697    if (path != NULL) {
698        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", path);
699    } else if (getenv("TMPDIR")) {
700        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("TMPDIR"));
701    } else if (getenv("MRTMP")) {
702        mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("MRTMP"));
703    } else {
704        mr_asprintf(tmp, "/tmp/mondo.tmp.XXXXXX");
705    }
706    p = mkdtemp(tmp);
707    if (p == NULL) {
708        printf("Failed to create global tmp directory %s for Mondo.",tmp);
709        mr_free(tmp);
710        finish(-1);
711    }
712    strcpy(bkpinfo->tmpdir,p);
713    mr_free(tmp);
714
715    log_it("bkpinfo->tmpdir is being set to %s", bkpinfo->tmpdir);
716
717    mr_asprintf(tmp, "mkdir -p %s/tmpfs", bkpinfo->tmpdir);
718    paranoid_system(tmp);
719    mr_free(tmp);
720}
721
722void setup_scratchdir(char *path) {
723
724    char *tmp = NULL;
725    char *p = NULL;
726
727    if (bkpinfo->scratchdir != NULL) {
728        /* purging a potential old scratchdir */
729        if (chdir("/tmp")) {
730            // FIXME
731        }
732        if (strstr(bkpinfo->scratchdir,"mondo.scratch.") != NULL) {
733            log_it("Purging old scratchdir %s", bkpinfo->scratchdir);
734            mr_asprintf(tmp,"rm -Rf %s",bkpinfo->scratchdir);
735        } else {
736            log_it("Purging old scratchdir %s/mondo.scratch.*", bkpinfo->scratchdir);
737            mr_asprintf(tmp,"rm -Rf %s/mondo.scratch.*",bkpinfo->scratchdir);
738        }
739        paranoid_system(tmp);
740        mr_free(tmp);
741    }
742
743    /* Always take in account arg first, then env, then default */
744    if (path != NULL) {
745        mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", path);
746    } else if (getenv("MRSCRATCH")) {
747        mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", getenv("MRSCRATCH"));
748    } else {
749        mr_asprintf(tmp, "/tmp/mondo.scratch.XXXXXX");
750    }
751    p = mkdtemp(tmp);
752    if (p == NULL) {
753        log_it("Failed to create global scratch directory %s for Mondo.",tmp);
754        finish(-1);
755    }
756    strcpy(bkpinfo->scratchdir,p);
757    log_it("bkpinfo->scratchdir is being set to %s", bkpinfo->scratchdir);
758    paranoid_free(tmp);
759
760    mr_asprintf(tmp, "mkdir -p %s", bkpinfo->scratchdir);
761    paranoid_system(tmp);
762    mr_free(tmp);
763}
764
765
766/**
767 * Reset all fields of the backup information structure to a sensible default.
768 * @param bkpinfo The @c bkpinfo to reset.
769 */
770void reset_bkpinfo()
771{
772    assert(bkpinfo != NULL);
773    memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
774
775    bkpinfo->media_device[0] = '\0';
776    bkpinfo->media_size = -1;
777    bkpinfo->boot_loader = '\0';
778    bkpinfo->boot_device = NULL;
779    bkpinfo->zip_exe[0] = '\0';
780    bkpinfo->zip_suffix[0] = '\0';
781    bkpinfo->image_devs[0] = '\0';
782    bkpinfo->compression_level = 3;
783    bkpinfo->use_lzo = FALSE;
784    bkpinfo->use_gzip = FALSE;
785    bkpinfo->use_lzma = FALSE;
786    bkpinfo->verify_data = FALSE;
787    bkpinfo->backup_data = FALSE;
788    bkpinfo->restore_data = FALSE;
789    bkpinfo->use_star = FALSE;
790    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
791   
792    /*  We need tmpdir as early as possible for further function calls */
793    bkpinfo->tmpdir[0] = '\0';          // Really setup after
794    bkpinfo->scratchdir[0] = '\0';          // Really setup after
795    setup_tmpdir(NULL);
796    setup_scratchdir(NULL);
797
798    bkpinfo->disaster_recovery = am_I_in_disaster_recovery_mode();
799    if (bkpinfo->disaster_recovery) {
800        strcpy(bkpinfo->isodir, "/");
801    } else {
802        strcpy(bkpinfo->isodir, MONDO_CACHE);
803    }
804    strcpy(bkpinfo->prefix, STD_PREFIX);
805    bkpinfo->optimal_set_size = 0L;
806    bkpinfo->backup_media_type = none;
807    bkpinfo->make_filelist = TRUE;  // unless -J supplied to mondoarchive
808    bkpinfo->exclude_paths = NULL;
809    bkpinfo->include_paths = NULL;
810    bkpinfo->exclude_devs = NULL;
811    bkpinfo->restore_path[0] = '\0';
812    bkpinfo->call_before_iso[0] = '\0';
813    bkpinfo->call_make_iso[0] = '\0';
814    bkpinfo->call_burn_iso[0] = '\0';
815    bkpinfo->call_after_iso[0] = '\0';
816    bkpinfo->kernel_path[0] = '\0';
817    bkpinfo->netfs_mount = NULL;
818    bkpinfo->netfs_proto = NULL;
819    bkpinfo->netfs_user = NULL;
820    bkpinfo->netfs_remote_dir = NULL;
821    bkpinfo->postnuke_tarball[0] = '\0';
822    bkpinfo->subdir = NULL;
823    bkpinfo->wipe_media_first = FALSE;
824    bkpinfo->differential = 0;
825    bkpinfo->please_dont_eject = FALSE;
826    bkpinfo->cdrw_speed = 0;
827    bkpinfo->manual_cd_tray = FALSE;
828    bkpinfo->nonbootable_backup = FALSE;
829    bkpinfo->make_cd_use_lilo = FALSE;
830    bkpinfo->use_obdr = FALSE;
831    bkpinfo->restore_mode = interactive;
832}
833
834
835/**
836 * Get the remaining free space (in MB) on @p partition.
837 * @param partition The partition to check free space on (either a device or a mountpoint).
838 * @return The free space on @p partition, in MB.
839 */
840long free_space_on_given_partition(char *partition)
841{
842    char *out_sz = NULL;
843    char *command = NULL;
844    long res;
845
846    assert_string_is_neither_NULL_nor_zerolength(partition);
847
848    mr_asprintf(command, "df -m -P %s 1> /dev/null 2> /dev/null", partition);
849    if (system(command)) {
850        mr_free(command);
851        return (-1);
852    }                           // partition does not exist
853    mr_free(command);
854
855    mr_asprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4", partition);
856    mr_asprintf(out_sz, "%s", call_program_and_get_last_line_of_output(command));
857    mr_free(command);
858
859    if (strlen(out_sz) == 0) {
860        mr_free(out_sz);
861        return (-1);
862    }                           // error within df, probably
863    res = atol(out_sz);
864    mr_free(out_sz);
865    return (res);
866}
867
868
869
870/**
871 * Check the user's system for sanity. Checks performed:
872 * - make sure user has enough RAM (32mb required, 64mb recommended)
873 * - make sure user has enough free space in @c /
874 * - check kernel for ramdisk support
875 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
876 * - make sure CD-ROM is unmounted
877 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
878 *
879 * @return number of problems with the user's setup (0 for success)
880 */
881int some_basic_system_sanity_checks()
882{
883
884    /*@ buffers ************ */
885    char *tmp = NULL;
886
887    /*@ int's *************** */
888    int retval = 0;
889
890    mvaddstr_and_log_it(g_currentY, 0, "Checking sanity of your Linux distribution");
891#ifndef __FreeBSD__
892    if (system("which mkfs.vfat 2> /dev/null 1> /dev/null")
893        && !system("which mkfs.msdos 2> /dev/null 1> /dev/null")) {
894        log_it("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
895        run_program_and_log_output("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
896    }
897    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
898    if (atol(tmp) < 35000) {
899        retval++;
900        log_to_screen("You must have at least 32MB of RAM to use Mondo.");
901    }
902    if (atol(tmp) < 66000) {
903        log_to_screen("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
904    }
905    mr_free(tmp);
906#endif
907
908    if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
909        retval++;
910        log_to_screen
911            ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
912        fatal_error
913            ("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. :)");
914    }
915#ifndef __FreeBSD__
916    if (run_program_and_log_output
917        ("grep ramdisk /proc/devices", FALSE)) {
918        /* Some SuSE have ramdisk as modules, so insert it first, then test again */
919        run_program_and_log_output("modprobe brd 2> /dev/null > /dev/null",FALSE);
920        if (run_program_and_log_output("grep ramdisk /proc/devices", FALSE)) {
921            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?")) {
922                //          retval++;
923                log_to_screen("It looks as if your kernel lacks ramdisk and initrd support.");
924                log_to_screen("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
925            }
926        }
927    }
928#endif
929    retval += whine_if_not_found(MKE2FS_OR_NEWFS);
930    if (system("which genisoimage > /dev/null 2> /dev/null")) {
931        retval += whine_if_not_found("mkisofs");
932    }
933    if (system("which wodim > /dev/null 2> /dev/null")) {
934        retval += whine_if_not_found("cdrecord");
935    }
936    retval += whine_if_not_found("bzip2");
937    retval += whine_if_not_found("gzip");
938    retval += whine_if_not_found("awk");
939    retval += whine_if_not_found("md5sum");
940    retval += whine_if_not_found("strings");
941    retval += whine_if_not_found("mindi");
942    retval += whine_if_not_found("buffer");
943
944    // abort if Windows partition but no ms-sys and parted
945    if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -vE \"/dev/fd|nexdisk\"", 0)) {
946        log_to_screen("I think you have a Windows 9x partition.");
947        retval += whine_if_not_found("parted");
948    }
949
950    if (!find_home_of_exe("cmp")) {
951        whine_if_not_found("cmp");
952    }
953    run_program_and_log_output("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
954    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("mount | grep -E \"cdr(om|w)\""));
955    if (strcmp("", tmp)) {
956        if (strstr(tmp, "autofs")) {
957            log_to_screen("Your CD-ROM is mounted via autofs. I therefore cannot tell");
958            log_to_screen("if a CD actually is inserted. If a CD is inserted, please");
959            log_to_screen("eject it. Thank you.");
960            log_it("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
961        } else
962            if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
963            retval++;
964            mr_free(tmp);
965            fatal_error("Your CD-ROM drive is mounted. Please unmount it.");
966        }
967    }
968    mr_free(tmp);
969
970    run_program_and_log_output("cat /etc/fstab", 5);
971#ifdef __FreeBSD__
972    run_program_and_log_output("vinum printconfig", 5);
973#else
974    run_program_and_log_output("cat /etc/raidtab", 5);
975#endif
976
977    if (run_program_and_log_output("mindi -V", 1)) {
978        log_to_screen("Could not ascertain mindi's version number.");
979        log_to_screen("You have not installed Mondo and/or Mindi properly.");
980        log_to_screen("Please uninstall and reinstall them both.");
981        fatal_error("Please reinstall Mondo and Mindi.");
982    }
983    mr_asprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test", bkpinfo->tmpdir);
984    if (run_program_and_log_output(tmp, 5)) {
985        log_to_screen("%s failed for some reason.", tmp);
986        mr_free(tmp);
987        log_to_screen("Please run that command by hand and examine "MINDI_LOGFILE);
988        log_to_screen("for more information. Perhaps your /etc/fstab file is insane.");
989        log_to_screen("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
990        retval++;
991    }
992    mr_free(tmp);
993
994    if (!run_program_and_log_output("mr_parted2fdisk -l 2>/dev/null | grep -i raid", 1) && !does_file_exist("/etc/raidtab")) {
995        log_to_screen("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
996        create_raidtab_from_mdstat(MDSTAT_FILE,"/etc/raidtab");
997    }
998
999    if (retval) {
1000        mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1001    } else {
1002        mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1003    }
1004    return (retval);
1005}
1006
1007/**
1008 * Retrieve the line containing @p label from the config file.
1009 * @param config_file The file to read from, usually @c /tmp/mondorestore.cfg.
1010 * @param label What to read from the file.
1011 * @param value Where to put it.
1012 * @return 0 for success, 1 for failure.
1013 */
1014int read_cfg_var(char *config_file, char *label, char *value)
1015{
1016    /*@ buffer ****************************************************** */
1017    char *command = NULL;
1018
1019    /*@ end vars *************************************************** */
1020
1021    assert_string_is_neither_NULL_nor_zerolength(config_file);
1022    assert_string_is_neither_NULL_nor_zerolength(label);
1023    if (!does_file_exist(config_file)) {
1024        log_to_screen("(read_cfg_var) Cannot find %s config file", config_file);
1025        value[0] = '\0';
1026        return (1);
1027    } else if ((value != NULL) && (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))) {
1028        log_msg(2, "FYI, I can't read new value for %s - already got %s", label, value);
1029        return (0);
1030    } else {
1031        mr_asprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5", label, config_file);
1032        strcpy(value, call_program_and_get_last_line_of_output(command));
1033        mr_free(command);
1034
1035        log_msg(4, "Configuration item %s is %s", label, value);
1036        if (strlen(value) == 0) {
1037            return (1);
1038        } else {
1039            return (0);
1040        }
1041    }
1042}
1043
1044
1045
1046/**
1047 * Remount @c supermount if it was unmounted earlier.
1048 */
1049void remount_supermounts_if_necessary()
1050{
1051    if (g_remount_cdrom_at_end) {
1052        run_program_and_log_output("mount " MNT_CDROM, FALSE);
1053    }
1054    if (g_remount_floppy_at_end) {
1055        run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1056    }
1057}
1058
1059/**
1060 * Unmount @c supermount if it's mounted.
1061 */
1062void unmount_supermounts_if_necessary()
1063{
1064    if (run_program_and_log_output
1065        ("mount | grep cdrom | grep super", FALSE) == 0) {
1066        g_remount_cdrom_at_end = TRUE;
1067        run_program_and_log_output("umount " MNT_CDROM, FALSE);
1068    }
1069    if (run_program_and_log_output
1070        ("mount | grep floppy | grep super", FALSE) == 0) {
1071        g_remount_floppy_at_end = TRUE;
1072        run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1073    }
1074}
1075
1076/**
1077 * Whether we had to stop autofs (if so, restart it at end).
1078 */
1079bool g_autofs_stopped = FALSE;
1080
1081/**
1082 * Path to the autofs initscript ("" if none exists).
1083 */
1084char g_autofs_exe[MAX_STR_LEN];
1085
1086/**
1087 * Autofs initscript in Xandros Linux distribution.
1088 */
1089#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1090
1091/**
1092 * Autofs initscript in most Linux distributions.
1093 */
1094#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1095
1096/**
1097 * If autofs is mounted, stop it (restart at end).
1098 */
1099void stop_autofs_if_necessary()
1100{
1101    char *tmp = NULL;
1102
1103    g_autofs_exe[0] = '\0';
1104    if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1105        strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1106    } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1107        strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1108    }
1109
1110    if (!g_autofs_exe[0]) {
1111        log_msg(3, "No autofs detected.");
1112    } else {
1113        log_msg(3, "%s --- autofs detected", g_autofs_exe);
1114        // FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1115        mr_asprintf(tmp, "%s stop", g_autofs_exe);
1116        if (run_program_and_log_output(tmp, 2)) {
1117            log_it("Failed to stop autofs - I assume it wasn't running");
1118        } else {
1119            g_autofs_stopped = TRUE;
1120            log_it("Stopped autofs OK");
1121        }
1122        mr_free(tmp);
1123    }
1124}
1125
1126/**
1127 * If autofs was stopped earlier, restart it.
1128 */
1129void restart_autofs_if_necessary()
1130{
1131    char *tmp = NULL;
1132
1133    if (!g_autofs_stopped || !g_autofs_exe[0]) {
1134        log_msg(3, "No autofs detected.");
1135        return;
1136    }
1137    mr_asprintf(tmp, "%s start", g_autofs_exe);
1138    if (run_program_and_log_output(tmp, 2)) {
1139        log_it("Failed to start autofs");
1140    } else {
1141        g_autofs_stopped = FALSE;
1142        log_it("Started autofs OK");
1143    }
1144    mr_free(tmp);
1145}
1146
1147
1148/**
1149 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1150 */
1151void mount_boot_if_necessary() {
1152    char *tmp = NULL;
1153    char *command = NULL;
1154
1155    log_msg(1, "Started sub");
1156    log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1157    g_boot_mountpt[0] = '\0';
1158    log_msg(4, "Done. Great. Seeting command to something");
1159    mr_asprintf(command, "%s", "grep -v \":\" /etc/fstab | grep -vE '^#.*$' | grep -E \"[   ]/boot[     ]\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1160    log_msg(4, "Cool. Command = '%s'", command);
1161    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1162    mr_free(command);
1163
1164    log_msg(4, "tmp = '%s'", tmp);
1165    log_it("/boot is at %s according to /etc/fstab", tmp);
1166    mr_asprintf(command, "mount | grep -Ew '/boot'");
1167    mr_free(tmp);
1168
1169    mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1170    mr_free(command);
1171
1172    if (!strcmp(tmp,"")) {
1173        if ((strstr(tmp, "LABEL=") != NULL) || (strstr(tmp,"UUID=") != NULL)) {
1174            if (!run_program_and_log_output("mount /boot", 5)) {
1175                strcpy(g_boot_mountpt, "/boot");
1176                log_msg(1, "Mounted /boot");
1177            } else {
1178                log_it("...ignored cos it's a label or uuid :-)");
1179            }
1180        } else {
1181            mr_asprintf(command, "mount | grep -E '^%s'", tmp);
1182            log_msg(3, "command = %s", command);
1183            if (run_program_and_log_output(command, 5)) {
1184                strcpy(g_boot_mountpt, tmp);
1185                mr_free(tmp);
1186                log_it("%s (your /boot partition) is not mounted. I'll mount it before backing up", g_boot_mountpt);
1187
1188                mr_asprintf(tmp, "mount %s", g_boot_mountpt);
1189                if (run_program_and_log_output(tmp, 5)) {
1190                    g_boot_mountpt[0] = '\0';
1191                    log_msg(1, "Plan B");
1192                    if (!run_program_and_log_output("mount /boot", 5)) {
1193                        strcpy(g_boot_mountpt, "/boot");
1194                        log_msg(1, "Plan B worked");
1195                    } else {
1196                        log_msg(1,
1197                            "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1198                    }
1199                }
1200            }
1201            mr_free(command);
1202        }
1203    }
1204    mr_free(tmp);
1205    log_msg(1, "Ended sub");
1206}
1207
1208
1209/**
1210 * If we mounted /boot earlier, unmount it.
1211 */
1212void unmount_boot_if_necessary()
1213{
1214    char *tmp = NULL;
1215
1216    log_msg(3, "starting");
1217    if (g_boot_mountpt[0]) {
1218        mr_asprintf(tmp, "umount %s", g_boot_mountpt);
1219        if (run_program_and_log_output(tmp, 5)) {
1220            log_it("WARNING - unable to unmount /boot");
1221        }
1222        mr_free(tmp);
1223    }
1224    log_msg(3, "leaving");
1225}
1226
1227
1228
1229/**
1230 * Write a line to a configuration file. Writes a line of the form,
1231 * @c label @c value.
1232 * @param config_file The file to write to. Usually @c mondorestore.cfg.
1233 * @param label What to call this bit of data you're writing.
1234 * @param value The bit of data you're writing.
1235 * @return 0 for success, 1 for failure.
1236 */
1237int write_cfg_var(char *config_file, char *label, char *value)
1238{
1239    /*@ buffers ***************************************************** */
1240    char *command = NULL;
1241    char *tempfile = NULL;
1242
1243
1244    /*@ end vars *************************************************** */
1245    assert_string_is_neither_NULL_nor_zerolength(config_file);
1246    assert_string_is_neither_NULL_nor_zerolength(label);
1247    assert(value != NULL);
1248    if (!does_file_exist(config_file)) {
1249        log_to_screen("(write_cfg_file) Cannot find %s config file", config_file);
1250        return (1);
1251    }
1252    mr_asprintf(tempfile, "%s/mojo-jojo.blah", bkpinfo->tmpdir);
1253    if (does_file_exist(config_file)) {
1254        mr_asprintf(command, "grep -vE '^%s .*$' %s > %s", label, config_file, tempfile);
1255        paranoid_system(command);
1256        mr_free(command);
1257    }
1258    mr_asprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1259    paranoid_system(command);
1260    mr_free(command);
1261
1262    mr_asprintf(command, "mv -f %s %s", tempfile, config_file);
1263    paranoid_system(command);
1264    mr_free(command);
1265    unlink(tempfile);
1266    mr_free(tempfile);
1267    return (0);
1268}
1269
1270
1271/**
1272 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1273 * information to the logfile.
1274 */
1275void standard_log_debug_msg(int debug_level, const char *szFile, const char *szFunction, int nLine, const char *fmt, ...) {
1276
1277    va_list args;
1278    static int depth = 0;
1279    FILE *fout;
1280
1281    if (depth > 5) {
1282        depth--;
1283        return;
1284    }
1285    depth++;
1286
1287    if (debug_level <= g_loglevel) {
1288        if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1289            return;
1290        }
1291
1292        // add tabs to distinguish log levels
1293        if (debug_level > 0) {
1294            fprintf(fout, "DBG%d: ", debug_level);
1295            if (getpid() == g_main_pid)
1296                fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction, nLine);
1297            else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1298                fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction, nLine);
1299            else
1300                fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile, szFunction, nLine);
1301        } else {
1302            fprintf(fout, "INFO: ");
1303        }
1304        va_start(args, fmt);
1305        vfprintf(fout, fmt, args);
1306        va_end(args);
1307
1308        fprintf(fout, "\n");
1309        paranoid_fclose(fout);
1310    }
1311    depth--;
1312}
1313
1314/**
1315 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1316 */
1317void (*log_debug_msg) (int, const char *, const char *, int, const char *, ...) = standard_log_debug_msg;
1318
1319
1320/**
1321 * Allocate or free important globals, depending on @p mal.
1322 * @param mal If TRUE, malloc; if FALSE, free.
1323 */
1324void do_libmondo_global_strings_thing(int mal)
1325{
1326    if (mal) {
1327        malloc_string(g_boot_mountpt);
1328        malloc_string(g_mondo_home);
1329        malloc_string(g_serial_string);
1330        malloc_string(g_magicdev_command);
1331    } else {
1332        paranoid_free(g_boot_mountpt);
1333        paranoid_free(g_mondo_home);
1334        paranoid_free(g_magicdev_command);
1335
1336        mr_free(g_serial_string);
1337    }
1338}
1339
1340/**
1341 * Allocate important globals.
1342 * @see do_libmondo_global_strings_thing
1343 */
1344void malloc_libmondo_global_strings(void)
1345{
1346    do_libmondo_global_strings_thing(1);
1347}
1348
1349/**
1350 * Free important globals.
1351 * @see do_libmondo_global_strings_thing
1352 */
1353void free_libmondo_global_strings(void)
1354{
1355    do_libmondo_global_strings_thing(0);
1356}
1357
1358
1359
1360/**
1361 * Stop @c magicdev if it's running.
1362 * The command used to start it is saved in @p g_magicdev_command.
1363 */
1364void stop_magicdev_if_necessary()
1365{
1366    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"));
1367    if (g_magicdev_command[0]) {
1368        log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1369        paranoid_system("killall magicdev");
1370    }
1371}
1372
1373
1374/**
1375 * Restart magicdev if it was stopped.
1376 */
1377void restart_magicdev_if_necessary()
1378{
1379    char *tmp = NULL;
1380
1381    if (g_magicdev_command && g_magicdev_command[0]) {
1382        mr_asprintf(tmp, "%s &", g_magicdev_command);
1383        paranoid_system(tmp);
1384        mr_free(tmp);
1385    }
1386}
1387
1388/* @} - end of utilityGroup */
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