source: trunk/mondo/mondo/common/libmondo-tools.c @ 127

Last change on this file since 127 was 127, checked in by bcornec, 14 years ago

merge -r 125:126 $SVN_M/branches/2.05

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1/* $Id: libmondo-tools.c 127 2005-11-19 01:27:31Z bcornec $
2misc tools
3*/
4
5/**
6 * @file
7 * Miscellaneous tools that didn't really fit anywhere else.
8 */
9
10#include "my-stuff.h"
11#include "mondostructures.h"
12#include "lib-common-externs.h"
13#include "libmondo-tools.h"
14#include "libmondo-gui-EXT.h"
15#include "libmondo-files-EXT.h"
16#include "libmondo-fork-EXT.h"
17#include "libmondo-raid-EXT.h"
18#include <sys/socket.h>
19#include <netdb.h>
20#include <netinet/in.h>
21#include <arpa/inet.h>
22
23/*@unused@*/
24//static char cvsid[] = "$Id: libmondo-tools.c 127 2005-11-19 01:27:31Z bcornec $";
25
26extern int g_tape_buffer_size_MB;
27extern char *g_erase_tmpdir_and_scratchdir;
28extern char *g_serial_string;
29extern bool g_text_mode;
30extern int g_currentY;
31extern int g_current_media_number;
32
33/**
34 * @addtogroup globalGroup
35 * @{
36 */
37bool g_remount_cdrom_at_end,    ///< TRUE if we unmounted the CD-ROM and should remount it when done with the backup.
38 g_remount_floppy_at_end;       ///< TRUE if we unmounted the floppy and should remount it when done with the backup.
39bool g_cd_recovery;             ///< TRUE if we're making an "autonuke" backup.
40double g_kernel_version;
41
42/**
43 * The place where /boot is mounted. - Used locally only
44 */
45static char *g_boot_mountpt = NULL;
46
47/**
48 * The location of Mondo's home directory.
49 */
50char *g_mondo_home = NULL;
51
52/**
53 * The serial string (used to differentiate between backups) of the current backup.
54 */
55char *g_serial_string = NULL;
56
57/**
58 * The location where tmpfs is mounted, or "" if it's not mounted.
59 */
60char *g_tmpfs_mountpt = NULL;
61char *g_magicdev_command = NULL;
62
63/**
64 * The default maximum level to log messages at or below.
65 */
66int g_loglevel = DEFAULT_DEBUG_LEVEL;
67
68/* @} - end of globalGroup */
69
70
71extern pid_t g_buffer_pid;
72extern pid_t g_main_pid;
73
74extern t_bkptype g_backup_media_type;
75
76extern bool am_I_in_disaster_recovery_mode(void);
77
78
79/**
80 * @addtogroup utilityGroup
81 * @{
82 */
83/**
84 * Assertion handler. Prints a friendly message to the user,
85 * offering to ignore all, dump core, break to debugger,
86 * exit, or ignore. Intended to be used with an assert() macro.
87 *
88 * @param file The file in which the assertion triggered.
89 * @param function The function (@c __FUNCTION__) in which the assertion triggered.
90 * @param line The line number of the assert() statement.
91 * @param exp The expression that failed (as a string).
92 */
93void _mondo_assert_fail(const char *file,
94                        const char *function, int line, const char *exp)
95{
96    static int ignoring_assertions = 0;
97    bool is_valid = TRUE;
98
99    log_it("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line,
100           function);
101    if (ignoring_assertions) {
102        log_it("Well, the user doesn't care...");
103        return;
104    }
105#ifndef _XWIN
106    if (!g_text_mode)
107        newtSuspend();
108#endif
109    printf("ASSERTION FAILED: `%s'\n", exp);
110    printf("\tat %s:%d in %s\n\n", file, line, function);
111    printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
112    do {
113        is_valid = TRUE;
114        switch (toupper(getchar())) {
115        case 'A':               // ignore (A)ll
116            ignoring_assertions = 1;
117            break;
118        case 'B':               // a(B)ort
119            signal(SIGABRT, SIG_DFL);   /* prevent SIGABRT handler from running */
120            raise(SIGABRT);
121            break;              /* "can't get here" */
122        case 'D':               // (D)ebug, aka asm("int 3")
123#ifdef __IA32__
124            __asm__ __volatile__("int $3"); // break to debugger
125#endif
126            break;
127        case 'E':               // (E)xit
128            fatal_error("Failed assertion -- see above for details");
129            break;              /* "can't get here" */
130        case 'I':               // (I)gnore
131            break;
132            /* These next two work as follows:
133               the `default' catches the user's invalid choice and says so;
134               the '\n' catches the newline on the end and prints the prompt again.
135             */
136        case '\n':
137            printf
138                ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
139            break;
140        default:
141            is_valid = FALSE;
142            printf("Invalid choice.\n");
143            break;
144        }
145    } while (!is_valid);
146
147    if (ignoring_assertions) {
148        log_it("Ignoring ALL assertions from now on.");
149    } else {
150        log_it("Ignoring assertion: %s", exp);
151    }
152
153    getchar();                  // skip \n
154
155#ifndef _XWIN
156    if (!g_text_mode)
157        newtResume();
158#endif
159}
160
161/**
162 * Clean's up users' KDE desktops.
163 * @bug Details about this function are unknown.
164 */
165void clean_up_KDE_desktop_if_necessary(void)
166{
167    char *tmp;
168
169    asprintf(&tmp,
170             "for i in `find /root /home -type d -name Desktop -maxdepth 2`; do \
171file=$i/.directory; if [ -f \"$file\" ] ; then mv -f $file $file.old ; \
172cat $file.old | awk '{if (index($0, \"rootimagesmindi\")) { while (length($0)>2) { getline;} ; } \
173else { print $0;};}' > $file ; fi ; done");
174    run_program_and_log_output(tmp, 5);
175    paranoid_free(tmp);
176}
177
178
179/**
180 * Locate mondoarchive's home directory. Searches in /usr/local/mondo, /usr/share/mondo,
181 * /usr/local/share/mondo, /opt, or if all else fails, search /usr.
182 *
183 * @param home_sz String to store the home directory ("" if it could not be found).
184 * @return 0 for success, nonzero for failure.
185 */
186char *find_and_store_mondoarchives_home()
187{
188    char *home_sz = NULL;
189
190    asprintf(&home_sz,
191             call_program_and_get_last_line_of_output
192             ("find /usr/lib/ /usr/local/ /usr/share/ /usr/local/share/ /opt/ /ramdisk/usr/share/ -type d -maxdepth 2 -name include -prune -o -type d -maxdepth 2 -path '*/mondo/restore-scripts' -printf '%h\n' 2> /dev/null"));
193
194    if (home_sz[0] == '\0') {
195        paranoid_free(home_sz);
196        asprintf(&home_sz,
197                 call_program_and_get_last_line_of_output
198                 ("find /usr -type d -path '*/mondo/restore-scripts' -follow -maxdepth 3 -printf '%h\n' 2> /dev/null"));
199    }
200    if (home_sz[0] == '\0') {
201        paranoid_free(home_sz);
202        home_sz = NULL;
203    } else {
204        log_it("mondoarchive home found at %s", home_sz);
205    }
206    return (home_sz);
207}
208
209
210char *get_architecture()
211{
212#ifdef __IA32__
213    return ("i386");
214#endif
215#ifdef __X86_64__
216    return ("x86-64");
217#endif
218#ifdef __IA64__
219    return ("ia64");
220#endif
221    return ("unknown");
222}
223
224
225
226double get_kernel_version()
227{
228    char *p, *tmp;
229    double d;
230#ifdef __FreeBSD__
231    // JOSH - FIXME :)
232    d = 5.2;                    // :-)
233#else
234    asprintf(&tmp, call_program_and_get_last_line_of_output("uname -r"));
235    p = strchr(tmp, '.');
236    if (p) {
237        p = strchr(++p, '.');
238        if (p) {
239            while (*p) {
240                *p = *(p + 1);
241                p++;
242            }
243        }
244    }
245//  log_msg(1, "tmp = '%s'", tmp);
246    d = atof(tmp);
247#endif
248    log_msg(1, "g_kernel_version = %f", d);
249    return (d);
250}
251
252
253
254
255
256/**
257 * Get the current time.
258 * @return number of seconds since the epoch.
259 */
260long get_time()
261{
262    return (long) time((void *) 0);
263}
264
265
266
267
268
269
270
271/**
272 * Initialize a RAID volume structure, setting fields to zero. The
273 * actual hard drive is unaffected.
274 *
275 * @param raidrec The RAID volume structure to initialize.
276 * @note This function is system dependent.
277 */
278#ifdef __FreeBSD__
279void initialize_raidrec(struct vinum_volume *raidrec)
280{
281    int i, j;
282    raidrec->volname[0] = '\0';
283    raidrec->plexes = 0;
284    for (i = 0; i < 9; ++i) {
285        raidrec->plex[i].raidlevel = -1;
286        raidrec->plex[i].stripesize = 0;
287        raidrec->plex[i].subdisks = 0;
288        for (j = 0; j < 9; ++j) {
289            strcpy(raidrec->plex[i].sd[j].which_device, "");
290        }
291    }
292}
293#else
294void initialize_raidrec(struct raid_device_record *raidrec)
295{
296    assert(raidrec != NULL);
297    raidrec->raid_device[0] = '\0';
298    raidrec->raid_level = 0;
299    raidrec->chunk_size = 4;
300    raidrec->persistent_superblock = 1;
301    raidrec->data_disks.entries = 0;
302    raidrec->spare_disks.entries = 0;
303    raidrec->parity_disks.entries = 0;
304    raidrec->failed_disks.entries = 0;
305    raidrec->additional_vars.entries = 0;
306}
307#endif
308
309
310
311
312/**
313 * Insert modules that Mondo requires.
314 * Currently inserts @c dos, @c fat, @c vfat, and @c osst for Linux;
315 * @c msdosfs and @c ext2fs for FreeBSD.
316 */
317void insmod_crucial_modules(void)
318{
319#ifdef __FreeBSD__
320    system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
321    system("kldstat | grep ext2fs  || kldload ext2fs 2> /dev/null");
322#else
323    system("modprobe -a dos fat vfat loop &> /dev/null");
324#endif
325}
326
327
328/**
329 * Finish configuring the backup information structure. Call this function
330 * to set the parameters that depend on those that can be given on the command
331 * line.
332 *
333 * @param bkpinfo The backup information structure. Fields modified/used:
334 * - Used: @c bkpinfo->backup_data
335 * - Used: @c bkpinfo->backup_media_type
336 * - Used: @c bkpinfo->cdrw_speed
337 * - Used: @c bkpinfo->compression_level
338 * - Used: @c bkpinfo->include_paths
339 * - Used: @c bkpinfo->prefix
340 * - Used: @c bkpinfo->isodir
341 * - Used: @c bkpinfo->manual_cd_tray
342 * - Used: @c bkpinfo->make_cd_use_lilo
343 * - Used: @c bkpinfo->media_device
344 * - Used: @c bkpinfo->nfs_mount
345 * - Used: @c bkpinfo->nonbootable_backup
346 * - Used: @c bkpinfo->scratchdir
347 * - Used: @c bkpinfo->tmpdir
348 * - Used: @c bkpinfo->use_lzo
349 * - Modified: @c bkpinfo->call_before_iso
350 * - Modified: @c bkpinfo->call_make_iso
351 * - Modified: @c bkpinfo->optimal_set_size
352 * - Modified: @c bkpinfo->zip_exe
353 * - Modified: @c bkpinfo->zip_suffix
354 *
355 * @return number of errors, or 0 for success.
356 * @note Also creates directories that are specified in the @c bkpinfo structure but
357 * do not exist.
358 */
359int post_param_configuration(struct s_bkpinfo *bkpinfo)
360{
361    char *extra_cdrom_params = NULL;
362    char *mondo_mkisofs_sz = NULL;
363    char *command;
364    char *hostname, *ip_address;
365    int retval = 0;
366    long avm = 0;
367    char *colon;
368    char *cdr_exe;
369    char *tmp;
370    char *tmp1;
371    int rdsiz_MB;
372    char *iso_path;
373
374    assert(bkpinfo != NULL);
375    bkpinfo->optimal_set_size =
376        (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 4 : 8) *
377        1024;
378
379    log_msg(1, "Foo");
380    if (bkpinfo->backup_media_type == tape) {
381        log_msg(1, "Bar");
382        asprintf(&tmp, "mt -f %s status", bkpinfo->media_device);
383        log_msg(1, "tmp = '%s'", tmp);
384        if (run_program_and_log_output(tmp, 3)) {
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        paranoid_free(tmp);
389    }
390    make_hole_for_dir(bkpinfo->scratchdir);
391    make_hole_for_dir(bkpinfo->tmpdir);
392    if (bkpinfo->backup_media_type == iso)
393        make_hole_for_dir(bkpinfo->isodir);
394
395    run_program_and_log_output("uname -a", 5);
396    run_program_and_log_output("cat /etc/*issue*", 5);
397    asprintf(&g_tmpfs_mountpt, "%s/tmpfs", bkpinfo->tmpdir);
398    asprintf(&command, "mkdir -p %s", g_tmpfs_mountpt);
399    paranoid_system(command);
400    paranoid_free(command);
401    rdsiz_MB = PPCFG_RAMDISK_SIZE + g_tape_buffer_size_MB;
402#ifdef __FreeBSD__
403    asprintf(&tmp,
404             call_program_and_get_last_line_of_output
405             ("vmstat | tail -1 | tr -s ' ' | cut -d' ' -f6"));
406    avm += atol(tmp);
407    paranoid_free(tmp);
408    asprintf(&tmp,
409             call_program_and_get_last_line_of_output
410             ("swapinfo | grep -v Device | tr -s ' ' | cut -d' ' -f4 | tr '\n' '+' | sed 's/+$//' | bc"));
411    avm += atol(tmp);
412    paranoid_free(tmp);
413    asprintf(&command, "mdmfs -s %d%c md9 %s", rdsiz_MB, 'm',
414             g_tmpfs_mountpt);
415#else
416    asprintf(&tmp,
417             call_program_and_get_last_line_of_output
418             ("free | grep \":\" | tr -s ' ' '\t' | cut -f2 | head -n1"));
419    avm += atol(tmp);
420    paranoid_free(tmp);
421    asprintf(&command, "mount /dev/shm -t tmpfs %s -o size=%d%c",
422             g_tmpfs_mountpt, rdsiz_MB, 'm');
423    run_program_and_log_output("cat /proc/cpuinfo", 5);
424    /* BERLIOS: rpm is not necessarily there ! */
425    run_program_and_log_output
426        ("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc",
427         5);
428#endif
429    if (avm / 1024 > rdsiz_MB * 3) {
430        if (run_program_and_log_output(command, 5)) {
431            g_tmpfs_mountpt[0] = '\0';
432            log_it("Failed to mount tmpfs");
433        } else {
434            log_it("Tmpfs mounted OK - %d MB", rdsiz_MB);
435        }
436    } else {
437        g_tmpfs_mountpt[0] = '\0';
438        log_it("It doesn't seem you have enough swap to use tmpfs. Fine.");
439    }
440    paranoid_free(command);
441
442    if (bkpinfo->use_lzo) {
443        strcpy(bkpinfo->zip_exe, "lzop");
444        strcpy(bkpinfo->zip_suffix, "lzo");
445    } else if (bkpinfo->compression_level != 0) {
446        strcpy(bkpinfo->zip_exe, "bzip2");
447        strcpy(bkpinfo->zip_suffix, "bz2");
448    } else {
449        bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
450    }
451
452// DVD
453
454    if (bkpinfo->backup_media_type == dvd) {
455        if (!(find_home_of_exe("growisofs"))) {
456            fatal_error("Please install growisofs.");
457        }
458        if (bkpinfo->nonbootable_backup) {
459            asprintf(&mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
460        } else if
461#ifdef __FreeBSD__
462            (TRUE)
463#else
464            (bkpinfo->make_cd_use_lilo)
465#endif
466#ifdef __IA64__
467    {
468        asprintf(&mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
469    }
470#else
471    {
472        asprintf(&mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
473    }
474#endif
475        else
476        {
477            asprintf(&mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
478        }
479        if (bkpinfo->manual_cd_tray) {
480            fatal_error("Manual CD tray + DVD not supported yet.");
481            // -m isn't supported by growisofs, BTW...
482        } else {
483            sprintf(bkpinfo->call_make_iso,
484                    "%s %s -Z %s . 2>> _ERR_",
485                    mondo_mkisofs_sz, "", bkpinfo->media_device);
486        }
487        paranoid_free(mondo_mkisofs_sz);
488
489        if (getenv("SUDO_COMMAND")) {
490            fatal_error
491                ("Can't write DVDs as sudo because growisofs doesn't support this - please see the growisofs manpage for details.");
492        }
493        log_msg(2, "call_make_iso (DVD res) is ... %s",
494                bkpinfo->call_make_iso);
495    }                           // end of DVD code
496
497// CD-R or CD-RW
498    if (bkpinfo->backup_media_type == cdrw
499        || bkpinfo->backup_media_type == cdr) {
500        if (!bkpinfo->manual_cd_tray) {
501            asprintf(&extra_cdrom_params, "-waiti ");
502        }
503        if (bkpinfo->backup_media_type == cdrw) {
504            if (extra_cdrom_params != NULL) {
505                asprintf(&tmp, extra_cdrom_params);
506                paranoid_free(extra_cdrom_params);
507                asprintf(&extra_cdrom_params, "%s blank=fast ", tmp);
508            } else {
509                asprintf(&extra_cdrom_params, "blank=fast ");
510            }
511        }
512        if (find_home_of_exe("cdrecord")) {
513            asprintf(&cdr_exe, "cdrecord");
514        } else if (find_home_of_exe("dvdrecord")) {
515            asprintf(&cdr_exe, "dvdrecord");
516        } else {
517            fatal_error("Please install either cdrecord or dvdrecord.");
518        }
519        if (bkpinfo->nonbootable_backup) {
520            asprintf(&mondo_mkisofs_sz, MONDO_MKISOFS_NONBOOT);
521        } else if
522#ifdef __FreeBSD__
523            (TRUE)
524#else
525            (bkpinfo->make_cd_use_lilo)
526#endif
527#ifdef __IA64__
528    {
529        asprintf(&mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_ELILO);
530    }
531#else
532    {
533        asprintf(&mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_LILO);
534    }
535#endif
536        else
537        {
538            asprintf(&mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_SYSLINUX);
539        }
540        if (bkpinfo->manual_cd_tray) {
541            sprintf(bkpinfo->call_before_iso,
542                    "%s -o %s/temporary.iso . 2>> _ERR_", mondo_mkisofs_sz,
543                    bkpinfo->tmpdir);
544            sprintf(bkpinfo->call_make_iso,
545                    "%s %s -v %s fs=4m dev=%s speed=%d %s/temporary.iso",
546                    cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject",
547                    extra_cdrom_params, bkpinfo->media_device,
548                    bkpinfo->cdrw_speed, bkpinfo->tmpdir);
549        } else {
550            sprintf(bkpinfo->call_make_iso,
551                    "%s . 2>> _ERR_ | %s %s %s fs=4m dev=%s speed=%d -",
552                    mondo_mkisofs_sz, cdr_exe,
553                    (bkpinfo->please_dont_eject) ? " " : "-eject",
554                    extra_cdrom_params, bkpinfo->media_device,
555                    bkpinfo->cdrw_speed);
556        }
557        paranoid_free(mondo_mkisofs_sz);
558        paranoid_free(cdr_exe);
559        paranoid_free(extra_cdrom_params);
560    }                           // end of CD code
561
562    if (bkpinfo->backup_media_type == iso) {
563
564/* Patch by Conor Daly <conor.daly@met.ie>
565 * 23-june-2004
566 * Break up isodir into iso_mnt and iso_path
567 * These will be used along with iso-dev at restore time
568 * to locate the ISOs where ever they're mounted
569 */
570
571        log_it("isodir = %s", bkpinfo->isodir);
572        asprintf(&command, "df %s | tail -n1 | cut -d' ' -f1",
573                 bkpinfo->isodir);
574        log_it("command = %s", command);
575        asprintf(&tmp, call_program_and_get_last_line_of_output(command));
576        paranoid_free(command);
577        log_it("res of it = %s", tmp);
578        asprintf(&tmp1, "%s/ISO-DEV", bkpinfo->tmpdir);
579        write_one_liner_data_file(tmp1, tmp);
580        paranoid_free(tmp1);
581
582        asprintf(&command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3",
583                 tmp);
584        paranoid_free(tmp);
585        log_it("command = %s", command);
586        asprintf(&tmp, call_program_and_get_last_line_of_output(command));
587        paranoid_free(command);
588        log_it("res of it = %s", tmp);
589
590        asprintf(&tmp1, "%s/ISO-MNT", bkpinfo->tmpdir);
591        write_one_liner_data_file(tmp1, tmp);
592        paranoid_free(tmp1);
593
594        log_it("isomnt: %s, %d", tmp, strlen(tmp));
595        if (strlen(bkpinfo->isodir) < strlen(tmp)) {
596            asprintf(&iso_path, "");
597        } else {
598            asprintf(&iso_path, "%s", bkpinfo->isodir + strlen(tmp));
599        }
600        paranoid_free(tmp);
601
602        asprintf(&tmp, "%s/ISODIR", bkpinfo->tmpdir);
603        write_one_liner_data_file(tmp, iso_path);
604        paranoid_free(tmp);
605        log_it("isodir: %s", iso_path);
606        paranoid_free(iso_path);
607
608/* End patch */
609    }                           // end of iso code
610
611    if (bkpinfo->backup_media_type == nfs) {
612        asprintf(&hostname, bkpinfo->nfs_mount);
613        colon = strchr(hostname, ':');
614        if (!colon) {
615            log_it("nfs mount doesn't have a colon in it");
616            retval++;
617        } else {
618            struct hostent *hent;
619
620            *colon = '\0';
621            hent = gethostbyname(hostname);
622            if (!hent) {
623                log_it("Can't resolve NFS mount (%s): %s", hostname,
624                       hstrerror(h_errno));
625                retval++;
626            } else {
627                asprintf(&ip_address, "%s%s", inet_ntoa((struct in_addr)
628                                                        *((struct in_addr
629                                                           *) hent->
630                                                          h_addr)),
631                         strchr(bkpinfo->nfs_mount, ':'));
632                strcpy(bkpinfo->nfs_mount, ip_address);
633                paranoid_free(ip_address);
634            }
635        }
636        store_nfs_config(bkpinfo);
637        paranoid_free(hostname);
638    }
639
640    log_it("Finished processing incoming params");
641    if (retval) {
642        fprintf(stderr, "Type 'man mondoarchive' for help.\n");
643    }
644    asprintf(&tmp, "%s", MONDO_TMPISOS);
645    if (does_file_exist(tmp)) {
646        unlink(tmp);
647    }
648    paranoid_free(tmp);
649
650    if (strlen(bkpinfo->tmpdir) < 2 || strlen(bkpinfo->scratchdir) < 2) {
651        log_it("tmpdir or scratchdir are blank/missing");
652        retval++;
653    }
654    if (bkpinfo->include_paths[0] == '\0') {
655        //      fatal_error ("Why no backup path?");
656        strcpy(bkpinfo->include_paths, "/");
657    }
658    chmod(bkpinfo->scratchdir, 0700);
659    chmod(bkpinfo->tmpdir, 0700);
660    g_backup_media_type = bkpinfo->backup_media_type;
661    return (retval);
662}
663
664
665
666/**
667 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
668 * Seeds the random-number generator, loads important modules, checks the sanity
669 * of the user's Linux distribution, and deletes logfile.
670 * @param bkpinfo The backup information structure. Will be initialized.
671 * @return number of errors (0 for success)
672 */
673int pre_param_configuration(struct s_bkpinfo *bkpinfo)
674{
675    int res = 0;
676
677    make_hole_for_dir(MNT_CDROM);
678    assert(bkpinfo != NULL);
679    srandom((unsigned long) (time(NULL)));
680    insmod_crucial_modules();
681    reset_bkpinfo(bkpinfo);     // also sets defaults ('/'=backup path, 3=compression level)
682    if (bkpinfo->disaster_recovery) {
683        if (!does_nonMS_partition_exist()) {
684            fatal_error
685                ("I am in disaster recovery mode\nPlease don't run mondoarchive.");
686        }
687    }
688
689    unlink(MONDO_TRACEFILE);
690    run_program_and_log_output("rm -Rf /tmp/changed.files*", FALSE);
691    if ((g_mondo_home = find_and_store_mondoarchives_home()) == NULL) {
692        fprintf(stderr,
693                "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");
694        res++;
695        return (res);
696    }
697    res += some_basic_system_sanity_checks();
698    if (res) {
699        log_it("Your distribution did not pass Mondo's sanity test.");
700    }
701    g_current_media_number = 1;
702    bkpinfo->postnuke_tarball[0] = bkpinfo->nfs_mount[0] = '\0';
703    return (res);
704}
705
706
707
708
709/**
710 * Reset all fields of the backup information structure to a sensible default.
711 * @param bkpinfo The @c bkpinfo to reset.
712 */
713void reset_bkpinfo(struct s_bkpinfo *bkpinfo)
714{
715    int i;
716
717    log_msg(1, "Hi");
718    assert(bkpinfo != NULL);
719    memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
720    bkpinfo->manual_cd_tray = FALSE;
721    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
722    bkpinfo->media_device[0] = '\0';
723    for (i = 0; i <= MAX_NOOF_MEDIA; i++) {
724        bkpinfo->media_size[i] = -1;
725    }
726    bkpinfo->boot_loader = '\0';
727    bkpinfo->boot_device[0] = '\0';
728    bkpinfo->zip_exe[0] = '\0';
729    bkpinfo->zip_suffix[0] = '\0';
730    bkpinfo->restore_path[0] = '\0';
731    bkpinfo->use_lzo = FALSE;
732    bkpinfo->do_not_compress_these[0] = '\0';
733    bkpinfo->verify_data = FALSE;
734    bkpinfo->backup_data = FALSE;
735    bkpinfo->restore_data = FALSE;
736    bkpinfo->disaster_recovery =
737        (am_I_in_disaster_recovery_mode()? TRUE : FALSE);
738    if (bkpinfo->disaster_recovery) {
739        strcpy(bkpinfo->isodir, "/");
740    } else {
741        strcpy(bkpinfo->isodir, "/root/images/mondo");
742    }
743    strcpy(bkpinfo->prefix, "mondorescue");
744
745    bkpinfo->scratchdir[0] = '\0';
746    bkpinfo->make_filelist = TRUE;  // unless -J supplied to mondoarchive
747    sprintf(bkpinfo->tmpdir, "/tmp/tmpfs/mondo.tmp.%d", (int) (random() % 32768));  // for mondorestore
748    bkpinfo->optimal_set_size = 0;
749    bkpinfo->backup_media_type = none;
750    strcpy(bkpinfo->include_paths, "/");
751    bkpinfo->exclude_paths[0] = '\0';
752    bkpinfo->call_before_iso[0] = '\0';
753    bkpinfo->call_make_iso[0] = '\0';
754    bkpinfo->call_burn_iso[0] = '\0';
755    bkpinfo->call_after_iso[0] = '\0';
756    bkpinfo->image_devs[0] = '\0';
757    bkpinfo->postnuke_tarball[0] = '\0';
758    bkpinfo->kernel_path[0] = '\0';
759    bkpinfo->nfs_mount[0] = '\0';
760    bkpinfo->nfs_remote_dir[0] = '\0';
761    bkpinfo->wipe_media_first = FALSE;
762    bkpinfo->differential = FALSE;
763    bkpinfo->cdrw_speed = 0;
764// patch by Herman Kuster 
765    bkpinfo->differential = 0;
766// patch end
767    bkpinfo->compression_level = 3;
768}
769
770
771
772
773/**
774 * Get the remaining free space (in MB) on @p partition.
775 * @param partition The partition to check free space on (either a device or a mountpoint).
776 * @return The free space on @p partition, in MB.
777 */
778long free_space_on_given_partition(char *partition)
779{
780    char *command, *out_sz;
781    long res;
782
783    assert_string_is_neither_NULL_nor_zerolength(partition);
784
785    asprintf(&command, "df -m %s &> /dev/null", partition);
786    if (system(command)) {
787        return (-1);
788    }                           // partition does not exist
789    paranoid_free(command);
790
791    asprintf(&command, "df -m %s | tail -n1 | tr -s ' ' '\t' | cut -f4",
792             partition);
793    asprintf(&out_sz, call_program_and_get_last_line_of_output(command));
794    paranoid_free(command);
795    if (strlen(out_sz) == 0) {
796        return (-1);
797    }                           // error within df, probably
798    res = atol(out_sz);
799    paranoid_free(out_sz);
800    return (res);
801}
802
803
804
805/**
806 * Check the user's system for sanity. Checks performed:
807 * - make sure user has enough RAM (32mb required, 64mb recommended)
808 * - make sure user has enough free space in @c /
809 * - check kernel for ramdisk support
810 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
811 * - make sure CD-ROM is unmounted
812 * - make sure /etc/modules.conf exists
813 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
814 *
815 * @return number of problems with the user's setup (0 for success)
816 */
817int some_basic_system_sanity_checks()
818{
819
820    /*@ buffers ************ */
821    char *tmp;
822
823    /*@ int's *************** */
824    int retval = 0;
825    long Lres;
826
827
828    mvaddstr_and_log_it(g_currentY, 0,
829                        "Checking sanity of your Linux distribution");
830#ifndef __FreeBSD__
831    if (system("which mkfs.vfat &> /dev/null")
832        && !system("which mkfs.msdos &> /dev/null")) {
833        log_it
834            ("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
835        run_program_and_log_output
836            ("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
837    }
838    asprintf(&tmp,
839             call_program_and_get_last_line_of_output
840             ("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
841    if (atol(tmp) < 35000) {
842        retval++;
843        log_to_screen("You must have at least 32MB of RAM to use Mondo.");
844    }
845    if (atol(tmp) < 66000) {
846        log_to_screen
847            ("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
848    }
849    paranoid_free(tmp);
850#endif
851
852    if ((Lres = free_space_on_given_partition("/root")) == -1) {
853        Lres = free_space_on_given_partition("/");
854    }
855    log_it("Free space on given partition = %ld MB", Lres);
856
857    if (Lres < 50) {
858        run_program_and_log_output
859            ("rm -Rf /root/images/mindi; mkdir -p /home/root/images/mindi; mkdir -p /root/images; ln -sf /home/root/images/mindi /root/images/mindi",
860             3);
861        //      fatal_error("Your / (or /root) partition has <50MB free. Please adjust your partition table to something saner.");
862    }
863
864    if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
865        retval++;
866        log_to_screen
867            ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
868        fatal_error
869            ("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. :)");
870    }
871#ifndef __FreeBSD__
872    if (run_program_and_log_output
873        ("cat /proc/devices | grep ramdisk", FALSE)) {
874        if (!ask_me_yes_or_no
875            ("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?"))
876        {
877            //          retval++;
878            log_to_screen
879                ("It looks as if your kernel lacks ramdisk and initrd support.");
880            log_to_screen
881                ("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
882        }
883    }
884#endif
885    retval += whine_if_not_found(MKE2FS_OR_NEWFS);
886    retval += whine_if_not_found("mkisofs");
887    if (system("which dvdrecord > /dev/null 2> /dev/null")) {
888        retval += whine_if_not_found("cdrecord");
889    }
890    retval += whine_if_not_found("bzip2");
891    retval += whine_if_not_found("awk");
892    retval += whine_if_not_found("md5sum");
893    retval += whine_if_not_found("strings");
894    retval += whine_if_not_found("mindi");
895    retval += whine_if_not_found("buffer");
896
897    // abort if Windows partition but no ms-sys and parted
898    if (!run_program_and_log_output
899        ("mount | grep -w vfat | grep -v /dev/fd | grep -v nexdisk", 0)
900        ||
901        !run_program_and_log_output
902        ("mount | grep -w dos | grep -v /dev/fd | grep -v nexdisk", 0)) {
903        log_to_screen("I think you have a Windows 9x partition.");
904        retval += whine_if_not_found("parted");
905#ifndef __IA64__
906        /* IA64 always has one vfat partition for EFI even without Windows */
907        // retval +=
908        if (!find_home_of_exe("ms-sys")) {
909            log_to_screen("Please install ms-sys just in case.");
910        }
911#endif
912    }
913
914    if (!find_home_of_exe("cmp")) {
915        if (!find_home_of_exe("true")) {
916            whine_if_not_found("cmp");
917        } else {
918            log_to_screen
919                ("Your system lacks the 'cmp' binary. I'll create a dummy cmp for you.");
920            if (run_program_and_log_output
921                ("cp -f `which true` /usr/bin/cmp", 0)) {
922                fatal_error("Failed to create dummy 'cmp' file.");
923            }
924        }
925    }
926    run_program_and_log_output
927        ("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
928    asprintf(&tmp,
929             call_program_and_get_last_line_of_output
930             ("mount | grep -E \"cdr(om|w)\""));
931    if (strcmp("", tmp)) {
932        if (strstr(tmp, "autofs")) {
933            log_to_screen
934                ("Your CD-ROM is mounted via autofs. I therefore cannot tell");
935            log_to_screen
936                ("if a CD actually is inserted. If a CD is inserted, please");
937            log_to_screen("eject it. Thank you.");
938            log_it
939                ("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
940        } else
941            if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
942            retval++;
943            fatal_error
944                ("Your CD-ROM drive is mounted. Please unmount it.");
945        }
946    }
947    paranoid_free(tmp);
948#ifndef __FreeBSD__
949    if (!does_file_exist("/etc/modules.conf")) {
950        if (does_file_exist("/etc/conf.modules")) {
951            log_it("Linking /etc/modules.conf to /etc/conf.modules");
952            run_program_and_log_output
953                ("ln -sf /etc/conf.modules /etc/modules.conf", 5);
954        } else if (does_file_exist("/etc/modprobe.d")) {
955            log_it
956                ("Directory /etc/modprobe.d found. mindi will use its contents.");
957        } else if (does_file_exist("/etc/modprobe.conf")) {
958            log_it("Linking /etc/modules.conf to /etc/modprobe.conf");
959            run_program_and_log_output
960                ("ln -sf /etc/modprobe.conf /etc/modules.conf", 5);
961        } else {
962            retval++;
963            log_to_screen
964                ("Please find out what happened to /etc/modules.conf");
965        }
966    }
967#endif
968
969    run_program_and_log_output("cat /etc/fstab", 5);
970#ifdef __FreeBSD__
971    run_program_and_log_output("vinum printconfig", 5);
972#else
973    run_program_and_log_output("cat /etc/raidtab", 5);
974#endif
975
976    if (run_program_and_log_output("mindi -V", 1)) {
977        log_to_screen("Could not ascertain mindi's version number.");
978        log_to_screen
979            ("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    if (run_program_and_log_output
984        ("mindi --makemountlist /tmp/mountlist.txt.test", 5)) {
985        log_to_screen
986            ("Mindi --makemountlist /tmp/mountlist.txt.test failed for some reason.");
987        log_to_screen
988            ("Please run that command by hand and examine /var/log/mindi.log");
989        log_to_screen
990            ("for more information. Perhaps your /etc/fstab file is insane.");
991        log_to_screen
992            ("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
993        retval++;
994    }
995
996    if (!run_program_and_log_output("fdisk -l | grep -i raid", 1)
997        && !does_file_exist("/etc/raidtab")) {
998        log_to_screen
999            ("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1000        create_raidtab_from_mdstat("/etc/raidtab", "/proc/mdstat");
1001    }
1002
1003    if (retval) {
1004        mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1005    } else {
1006        mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1007    }
1008    return (retval);
1009}
1010
1011/**
1012 * Retrieve the line containing @p label from the config file.
1013 * @param config_file The file to read from, usually @c /tmp/mondo-restore.cfg.
1014 * @param label What to read from the file.
1015 * @param value Where to put it.
1016 * @return 0 for success, 1 for failure.
1017 */
1018int read_cfg_var(char *config_file, char *label, char *value)
1019{
1020    /*@ buffer ****************************************************** */
1021    char *command;
1022    char *tmp;
1023
1024    /*@ end vars *************************************************** */
1025
1026    assert_string_is_neither_NULL_nor_zerolength(config_file);
1027    assert_string_is_neither_NULL_nor_zerolength(label);
1028    if (!does_file_exist(config_file)) {
1029        asprintf(&tmp, "(read_cfg_var) Cannot find %s config file",
1030                 config_file);
1031        log_to_screen(tmp);
1032        paranoid_free(tmp);
1033        value[0] = '\0';
1034        return (1);
1035    } else if (strstr(value, "/dev/") && strstr(value, "t0")
1036               && !strcmp(label, "media-dev")) {
1037        log_msg(2, "FYI, I shan't read new value for %s - already got %s",
1038                label, value);
1039        return (0);
1040    } else {
1041        asprintf(&command, "cat %s | grep \"%s .*\" | cut -d' ' -f2,3,4,5",
1042                 config_file, label);
1043        strcpy(value, call_program_and_get_last_line_of_output(command));
1044        paranoid_free(command);
1045        if (strlen(value) == 0) {
1046            return (1);
1047        } else {
1048            return (0);
1049        }
1050    }
1051}
1052
1053
1054
1055/**
1056 * Remount @c supermount if it was unmounted earlier.
1057 */
1058void remount_supermounts_if_necessary()
1059{
1060    if (g_remount_cdrom_at_end) {
1061        run_program_and_log_output("mount " MNT_CDROM, FALSE);
1062    }
1063    if (g_remount_floppy_at_end) {
1064        run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1065    }
1066}
1067
1068/**
1069 * Unmount @c supermount if it's mounted.
1070 */
1071void unmount_supermounts_if_necessary()
1072{
1073    if (run_program_and_log_output
1074        ("mount | grep cdrom | grep super", FALSE) == 0) {
1075        g_remount_cdrom_at_end = TRUE;
1076        run_program_and_log_output("umount " MNT_CDROM, FALSE);
1077    }
1078    if (run_program_and_log_output
1079        ("mount | grep floppy | grep super", FALSE) == 0) {
1080        g_remount_floppy_at_end = TRUE;
1081        run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1082    }
1083}
1084
1085/**
1086 * Whether we had to stop autofs (if so, restart it at end).
1087 */
1088bool g_autofs_stopped = FALSE;
1089
1090/**
1091 * Path to the autofs initscript ("" if none exists).
1092 */
1093char g_autofs_exe[MAX_STR_LEN];
1094
1095/**
1096 * Autofs initscript in Xandros Linux distribution.
1097 */
1098#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1099
1100/**
1101 * Autofs initscript in most Linux distributions.
1102 */
1103#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1104
1105/**
1106 * If autofs is mounted, stop it (restart at end).
1107 */
1108void stop_autofs_if_necessary()
1109{
1110    char *tmp;
1111
1112    g_autofs_exe[0] = '\0';
1113    if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1114        strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1115    } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1116        strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1117    }
1118
1119    if (!g_autofs_exe[0]) {
1120        log_msg(3, "No autofs detected.");
1121    } else {
1122        log_msg(3, "%s --- autofs detected", g_autofs_exe);
1123// FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1124        asprintf(&tmp, "%s stop", g_autofs_exe);
1125        if (run_program_and_log_output(tmp, 2)) {
1126            log_it("Failed to stop autofs - I assume it wasn't running");
1127        } else {
1128            g_autofs_stopped = TRUE;
1129            log_it("Stopped autofs OK");
1130        }
1131        paranoid_free(tmp);
1132    }
1133}
1134
1135/**
1136 * If autofs was stopped earlier, restart it.
1137 */
1138void restart_autofs_if_necessary()
1139{
1140    char *tmp;
1141
1142    if (!g_autofs_stopped || !g_autofs_exe[0]) {
1143        log_msg(3, "No autofs detected.");
1144        return;
1145    }
1146    asprintf(&tmp, "%s start", g_autofs_exe);
1147    if (run_program_and_log_output(tmp, 2)) {
1148        log_it("Failed to start autofs");
1149    } else {
1150        g_autofs_stopped = FALSE;
1151        log_it("Started autofs OK");
1152    }
1153    paranoid_free(tmp);
1154}
1155
1156
1157/**
1158 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1159 */
1160void mount_boot_if_necessary()
1161{
1162    char *tmp;
1163    char *tmp1;
1164    char *command;
1165
1166    log_msg(1, "Started sub");
1167    log_msg(4, "About to set g_boot_mountpt to \"\"");
1168    asprintf(&g_boot_mountpt, "");
1169    log_msg(4, "Done. Great. Seeting command to something");
1170    asprintf(&command,
1171             "cat /etc/fstab | grep -v \":\" | grep -vx \"#.*\" | grep -w \"/boot\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1172    log_msg(4, "Cool. Command = '%s'", command);
1173    asprintf(&tmp, call_program_and_get_last_line_of_output(command));
1174    paranoid_free(command);
1175
1176    log_msg(4, "tmp = '%s'", tmp);
1177    if (tmp[0]) {
1178        log_it("/boot is at %s according to /etc/fstab", tmp);
1179        if (strstr(tmp, "LABEL=")) {
1180            if (!run_program_and_log_output("mount /boot", 5)) {
1181                paranoid_free(g_boot_mountpt);
1182                asprintf(&g_boot_mountpt, "/boot");
1183                log_msg(1, "Mounted /boot");
1184            } else {
1185                log_it("...ignored cos it's a label :-)");
1186            }
1187        } else {
1188            asprintf(&command, "mount | grep -w \"%s\"", tmp);
1189            log_msg(3, "command = %s", command);
1190            if (run_program_and_log_output(command, 5)) {
1191                paranoid_free(g_boot_mountpt);
1192                asprintf(&g_boot_mountpt, tmp);
1193                asprintf(&tmp1,
1194                         "%s (your /boot partition) is not mounted. I'll mount it before backing up",
1195                         g_boot_mountpt);
1196                log_it(tmp1);
1197                paranoid_free(tmp1);
1198
1199                asprintf(&tmp1, "mount %s", g_boot_mountpt);
1200                if (run_program_and_log_output(tmp1, 5)) {
1201                    paranoid_free(g_boot_mountpt);
1202                    asprintf(&g_boot_mountpt, "");
1203                    log_msg(1, "Plan B");
1204                    if (!run_program_and_log_output("mount /boot", 5)) {
1205                        paranoid_free(g_boot_mountpt);
1206                        asprintf(&g_boot_mountpt, "/boot");
1207                        log_msg(1, "Plan B worked");
1208                    } else {
1209                        log_msg(1,
1210                                "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1211                    }
1212                }
1213                paranoid_free(tmp1);
1214            }
1215            paranoid_free(command);
1216        }
1217    }
1218    paranoid_free(tmp);
1219    log_msg(1, "Ended sub");
1220}
1221
1222
1223/**
1224 * If we mounted /boot earlier, unmount it.
1225 */
1226void unmount_boot_if_necessary()
1227{
1228    char *tmp;
1229
1230    log_msg(3, "starting");
1231    if (g_boot_mountpt[0]) {
1232        asprintf(&tmp, "umount %s", g_boot_mountpt);
1233        if (run_program_and_log_output(tmp, 5)) {
1234            log_it("WARNING - unable to unmount /boot");
1235        }
1236        paranoid_free(tmp);
1237    }
1238    log_msg(3, "leaving");
1239}
1240
1241
1242
1243/**
1244 * Write a line to a configuration file. Writes a line of the form,
1245 * @c label @c value.
1246 * @param config_file The file to write to. Usually @c mondo-restore.cfg.
1247 * @param label What to call this bit of data you're writing.
1248 * @param value The bit of data you're writing.
1249 * @return 0 for success, 1 for failure.
1250 */
1251int write_cfg_var(char *config_file, char *label, char *value)
1252{
1253    /*@ buffers ***************************************************** */
1254    char *command;
1255    char *tempfile;
1256    char *tmp;
1257
1258
1259    /*@ end vars *************************************************** */
1260    assert_string_is_neither_NULL_nor_zerolength(config_file);
1261    assert_string_is_neither_NULL_nor_zerolength(label);
1262    assert(value != NULL);
1263
1264    if (!does_file_exist(config_file)) {
1265        asprintf(&tmp, "(write_cfg_file) Cannot find %s config file",
1266                 config_file);
1267        log_to_screen(tmp);
1268        paranoid_free(tmp);
1269        return (1);
1270    }
1271    asprintf(&tempfile,
1272             call_program_and_get_last_line_of_output
1273             ("mktemp -q /tmp/mojo-jojo.blah.XXXXXX"));
1274    if (does_file_exist(config_file)) {
1275        asprintf(&command, "cat %s | grep -vx \"%s .*\" > %s", config_file,
1276                 label, tempfile);
1277        paranoid_system(command);
1278        paranoid_free(command);
1279    }
1280    asprintf(&command, "echo \"%s %s\" >> %s", label, value, tempfile);
1281    paranoid_system(command);
1282    paranoid_free(command);
1283
1284    asprintf(&command, "mv -f %s %s", tempfile, config_file);
1285    paranoid_system(command);
1286    paranoid_free(command);
1287    unlink(tempfile);
1288    paranoid_free(tempfile);
1289    return (0);
1290}
1291
1292
1293/**
1294 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1295 * information to the logfile.
1296 */
1297void standard_log_debug_msg(int debug_level, const char *szFile,
1298                            const char *szFunction, int nLine,
1299                            const char *fmt, ...)
1300{
1301    va_list args;
1302    int i;
1303    static int depth = 0;
1304    FILE *fout;
1305
1306    if (depth > 5) {
1307        depth--;
1308        return;
1309    }
1310    depth++;
1311
1312    if (debug_level <= g_loglevel) {
1313        va_start(args, fmt);
1314        if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1315            return;
1316        }                       // fatal_error("Failed to openout to logfile - sheesh..."); }
1317
1318        // add tabs to distinguish log levels
1319        if (debug_level > 0) {
1320            for (i = 1; i < debug_level; i++)
1321                fprintf(fout, "\t");
1322            if (getpid() == g_main_pid)
1323                fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction,
1324                        nLine);
1325            else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1326                fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction,
1327                        nLine);
1328            else
1329                fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile,
1330                        szFunction, nLine);
1331        }
1332        vfprintf(fout, fmt, args);
1333
1334        // do not slow down the progran if standard debug level
1335        // must be enabled: if no flush, the log won't be up-to-date if there
1336        // is a segfault
1337        //if (g_dwDebugLevel != 1)
1338
1339        va_end(args);
1340        fprintf(fout, "\n");
1341        paranoid_fclose(fout);
1342    }
1343    depth--;
1344}
1345
1346/**
1347 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1348 */
1349void (*log_debug_msg) (int, const char *, const char *, int, const char *,
1350                       ...) = standard_log_debug_msg;
1351
1352
1353/**
1354 * Allocate or free important globals, depending on @p mal.
1355 * @param mal If TRUE, malloc; if FALSE, free.
1356 */
1357void do_libmondo_global_strings_thing(int mal)
1358{
1359    if (mal) {
1360        iamhere("Malloc'ing globals");
1361        malloc_string(g_erase_tmpdir_and_scratchdir);
1362        malloc_string(g_serial_string);
1363        malloc_string(g_magicdev_command);
1364    } else {
1365        iamhere("Freeing globals");
1366        paranoid_free(g_boot_mountpt);
1367        paranoid_free(g_mondo_home);
1368        paranoid_free(g_tmpfs_mountpt);
1369        paranoid_free(g_erase_tmpdir_and_scratchdir);
1370        paranoid_free(g_serial_string);
1371        paranoid_free(g_magicdev_command);
1372    }
1373}
1374
1375/**
1376 * Allocate important globals.
1377 * @see do_libmondo_global_strings_thing
1378 */
1379void malloc_libmondo_global_strings(void)
1380{
1381    do_libmondo_global_strings_thing(1);
1382}
1383
1384/**
1385 * Free important globals.
1386 * @see do_libmondo_global_strings_thing
1387 */
1388void free_libmondo_global_strings(void)
1389{
1390    do_libmondo_global_strings_thing(0);
1391}
1392
1393
1394
1395/**
1396 * Stop @c magicdev if it's running.
1397 * The command used to start it is saved in @p g_magicdev_command.
1398 */
1399void stop_magicdev_if_necessary()
1400{
1401    strcpy(g_magicdev_command,
1402           call_program_and_get_last_line_of_output
1403           ("ps ax | grep -w magicdev | grep -v grep | tr -s '\t' ' '| cut -d' ' -f6-99"));
1404    if (g_magicdev_command[0]) {
1405        log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1406        paranoid_system("killall magicdev");
1407    }
1408}
1409
1410
1411/**
1412 * Restart magicdev if it was stopped.
1413 */
1414void restart_magicdev_if_necessary()
1415{
1416    char *tmp;
1417
1418    if (g_magicdev_command && g_magicdev_command[0]) {
1419        asprintf(&tmp, "%s &", g_magicdev_command);
1420        paranoid_system(tmp);
1421        paranoid_free(tmp);
1422    }
1423}
1424
1425/* @} - end of utilityGroup */
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