source: MondoRescue/branches/stable/mondo/mondo/common/libmondo-tools.c @ 424

Last change on this file since 424 was 424, checked in by bcornec, 15 years ago

mondo now uses /usr/share for the restore-scripts (/usr/lib should contains binary only) - this also makes rpmlint happier

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1/* libmondo-tools.c                                  misc tools
2   $Id: libmondo-tools.c 424 2006-02-21 21:48:23Z bcornec $
3.
4
5
606/28
7- abort if RAID partitions found but /etc/raidtab not found
8
906/25
10- don't insist on ms-sys; recommend it
11- don't fatal_error if can't open log file
12
1306/14
14- call mindi -V before calling mindi --makemountlist
15
1604/09
17- lots of malloc'd char*'s instead of char[]'s in post_param_config'n
18
1904/02
20- better sanity-checking, re: /etc/modules.conf
21
2202/15
23- abort if Windows dir but no ms-sys or parted
24
2502/08
26- missing ramdisk/initrd support is nonfatal now (but stupid)
27
2801/16
29- added g_kernel_version and get_kernel_version()
30
3101/08/2004
32- fixed /boot mounter thingy
33
3411/14/2003
35- if <50MB free in /root, softlink /root/images/mindi to
36  /home/root/images/mindi as a workaround
37
3810/23
39- streaming backups now generate 4MB sets; CDs, 8MB sets
40
4110/21
42- better at finding your /boot in order to mount it, if nec.
43- link /etc/modules.conf to /etc/conf.modules if former
44  is missing but latter is not
45- changed "/mnt/cdrom" to MNT_CDROM
46- changed "/mnt/floppy" to MNT_FLOPPY
47
4810/13
49- added stop_magicdev_if_necessary()
50- added restart_magicdev_if_necessary()
51
5210/02
53- don't eject if bkpinfo->please_dont_eject is TRUE
54
5509/28
56- fixed segfault in mount_..._necessary
57
5809/26
59- ask for cmp (or create workaround if possible)
60
6109/25
62- add DVD support
63
6409/24
65- don't overwrite existing media-dev value in bkpinfo IF it's
66  a tape device AND it's already populated by /dev/{something}
67  ...This helps w/ weird tape drives
68
6909/23
70- malloc/free global strings in new subroutines - malloc_libmondo_global_strings()
71  and free_libmondo_global_strings() - which are in libmondo-tools.c
72
7309/18
74- added stop_autofs_if_necessary() and restart_autofs_if_necessary()
75
7609/13
77- added log_debug_msg()
78- turned log_it() into a macro
79
8009/10
81- reduced PPCFG_RAMDISK to 150m (was 200m)
82- max set size is now 8MB (was 6)
83- added 'buffer' to requisite tools
84
8508/29
86- typical set size is now 5MB
87   
8807/22
89- increased PPCFG* to 200m
90
9105/07
92- changed grep -m1 to grep | head -n1 for Debian users
93- pre_param_...() also mkdir -p /mnt/cdrom, just in case
94
9505/05
96- cleaner logging of call to dd if=<tape> of=/dev/null
97- added Joshua Oreman's FreeBSD patches
98
9905/04
100- added Herman Kuster's multi-level bkp patch
101
10205/02
103- log_it() --- "Message repeated N times" (if it was)
104
10504/24
106- added lots of assert()'s and log_OS_error()'s
107- reset_bkpinfop() --- reset all media_size[] array
108- increased tmpfs ramdisk to size=100m
109
11004/22
111- post_param_configuration() --- store iso-dev and isodir
112
11304/05
114- re-enable tmpfs ramdisk/mountpt _but_ make sure size=80m
115- in post_param_configuration(), use cdrecord in preference
116  to dvdrecord now
117
11803/27
119- disabled tmpfs ramdisk/mountpt
120
12101/02/2003
122- bkpinfo->makefilelist = TRUE
123
12412/10/2002
125- added g_loglevel
126- fixed minor bug in clean_up_KDE_desktop_if_necessary()
127- log versions of newt, slang, ncurses
128- isodir defaults to / if disaster recovery
129
13011/28
131- unmount all CD devices at start
132- added clean_up_KDE_desktop_if_necessary()
133
13411/20
135- don't use lilo.conf.anaconda; abort instead
136- mount/unmount /boot partition for Gentoo 1.2 users
137
13811/13
139- call mindi --makemountlist as part of testing sanity of distro
140
14111/08
142- added a couple of chmod 700's (one for scratchdir, one for tmpdir)
143  to post_param_configuration()
144
14510/01 - 10/31
146- added checking of / and /root's free space to some_basic_sanity_checks()
147- moved some subroutines here from common/libmondo-archive
148
14909/01 - 09/30
150- don't write log_it()'s string to stdout, even if text mode
151- tell user the kernel is bad if it has no ramdisk support but allow
152  it if they want to use the failsafe kernel for booting
153- run_program_and_log_output() now takes boolean operator to specify
154  whether it will log its activities in the event of _success_
155- if mkfs.vfat not found but mkfs.msdos found then create a softlink
156  from the former to the latter
157
15808/01 - 08/31
159- if /etc/lilo.conf not found not /etc/lilo.conf.anaconda found
160  then create a softlink from the former to the latter, to work
161  around RH7.3's b0rken LILO support
162- handle unknown media size
163
16407/27
165- created
166*/
167
168
169/**
170 * @file
171 * Miscellaneous tools that didn't really fit anywhere else.
172 */
173
174#include "my-stuff.h"
175#include "mondostructures.h"
176#include "lib-common-externs.h"
177#include "libmondo-tools.h"
178#include "libmondo-gui-EXT.h"
179#include "libmondo-files-EXT.h"
180#include "libmondo-fork-EXT.h"
181#include "libmondo-raid-EXT.h"
182#include <sys/socket.h>
183#include <netdb.h>
184#include <netinet/in.h>
185#include <arpa/inet.h>
186
187/*@unused@*/
188//static char cvsid[] = "$Id: libmondo-tools.c 424 2006-02-21 21:48:23Z bcornec $";
189
190extern int g_tape_buffer_size_MB;
191extern char *g_erase_tmpdir_and_scratchdir;
192extern char *g_serial_string;
193extern bool g_text_mode;
194extern int g_currentY;
195extern int g_current_media_number;
196
197/**
198 * @addtogroup globalGroup
199 * @{
200 */
201bool g_remount_cdrom_at_end,    ///< TRUE if we unmounted the CD-ROM and should remount it when done with the backup.
202 g_remount_floppy_at_end;       ///< TRUE if we unmounted the floppy and should remount it when done with the backup.
203bool g_cd_recovery;             ///< TRUE if we're making an "autonuke" backup.
204double g_kernel_version;
205
206/**
207 * The place where /boot is mounted.
208 */
209char *g_boot_mountpt = NULL;
210
211/**
212 * The location of Mondo's home directory.
213 */
214char *g_mondo_home = NULL;
215
216/**
217 * The serial string (used to differentiate between backups) of the current backup.
218 */
219char *g_serial_string = NULL;
220
221/**
222 * The location where tmpfs is mounted, or "" if it's not mounted.
223 */
224char *g_tmpfs_mountpt = NULL;
225char *g_magicdev_command = NULL;
226
227/**
228 * The default maximum level to log messages at or below.
229 */
230int g_loglevel = DEFAULT_DEBUG_LEVEL;
231
232/* @} - end of globalGroup */
233
234
235extern pid_t g_buffer_pid;
236extern pid_t g_main_pid;
237
238extern t_bkptype g_backup_media_type;
239
240extern bool am_I_in_disaster_recovery_mode(void);
241
242
243/**
244 * @addtogroup utilityGroup
245 * @{
246 */
247/**
248 * Assertion handler. Prints a friendly message to the user,
249 * offering to ignore all, dump core, break to debugger,
250 * exit, or ignore. Intended to be used with an assert() macro.
251 *
252 * @param file The file in which the assertion triggered.
253 * @param function The function (@c __FUNCTION__) in which the assertion triggered.
254 * @param line The line number of the assert() statement.
255 * @param exp The expression that failed (as a string).
256 */
257void _mondo_assert_fail(const char *file,
258                        const char *function, int line, const char *exp)
259{
260    static int ignoring_assertions = 0;
261    bool is_valid = TRUE;
262
263    log_it("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line,
264           function);
265    if (ignoring_assertions) {
266        log_it("Well, the user doesn't care...");
267        return;
268    }
269#ifndef _XWIN
270    if (!g_text_mode)
271        newtSuspend();
272#endif
273    printf("ASSERTION FAILED: `%s'\n", exp);
274    printf("\tat %s:%d in %s\n\n", file, line, function);
275    printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
276    do {
277        is_valid = TRUE;
278        switch (toupper(getchar())) {
279        case 'A':               // ignore (A)ll
280            ignoring_assertions = 1;
281            break;
282        case 'B':               // a(B)ort
283            signal(SIGABRT, SIG_DFL);   /* prevent SIGABRT handler from running */
284            raise(SIGABRT);
285            break;              /* "can't get here" */
286        case 'D':               // (D)ebug, aka asm("int 3")
287#ifdef __IA32__
288            __asm__ __volatile__("int $3"); // break to debugger
289#endif
290            break;
291        case 'E':               // (E)xit
292            fatal_error("Failed assertion -- see above for details");
293            break;              /* "can't get here" */
294        case 'I':               // (I)gnore
295            break;
296            /* These next two work as follows:
297               the `default' catches the user's invalid choice and says so;
298               the '\n' catches the newline on the end and prints the prompt again.
299             */
300        case '\n':
301            printf
302                ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
303            break;
304        default:
305            is_valid = FALSE;
306            printf("Invalid choice.\n");
307            break;
308        }
309    } while (!is_valid);
310
311    if (ignoring_assertions) {
312        log_it("Ignoring ALL assertions from now on.");
313    } else {
314        log_it("Ignoring assertion: %s", exp);
315    }
316
317    getchar();                  // skip \n
318
319#ifndef _XWIN
320    if (!g_text_mode)
321        newtResume();
322#endif
323}
324
325/**
326 * Clean's up users' KDE desktops.
327 * @bug Details about this function are unknown.
328 */
329void clean_up_KDE_desktop_if_necessary(void)
330{
331    char *tmp;
332
333    malloc_string(tmp);
334    strcpy(tmp,
335           "for i in `find /root /home -type d -name Desktop -maxdepth 2`; do \
336file=$i/.directory; if [ -f \"$file\" ] ; then mv -f $file $file.old ; \
337awk '{if (index($0, \"rootimagesmindi\")) { while (length($0)>2) { getline;} ; } \
338else { print $0;};}' $file.old  > $file ; fi ; done");
339    run_program_and_log_output(tmp, 5);
340    paranoid_free(tmp);
341}
342
343
344/**
345 * Locate mondoarchive's home directory. Searches in /usr/local/mondo, /usr/share/mondo,
346 * /usr/local/share/mondo, /opt, or if all else fails, search /usr.
347 *
348 * @param home_sz String to store the home directory ("" if it could not be found).
349 * @return 0 for success, nonzero for failure.
350 */
351int find_and_store_mondoarchives_home(char *home_sz)
352{
353    assert(home_sz != NULL);
354    strcpy(home_sz, MONDO_SHARE);
355    return (0);
356}
357
358
359char *get_architecture()
360{
361#ifdef __IA32__
362    return ("i386");
363#endif
364#ifdef __IA64__
365    return ("ia64");
366#endif
367    return ("unknown");
368}
369
370
371
372double get_kernel_version()
373{
374    char *p, tmp[200];
375    double d;
376#ifdef __FreeBSD__
377    // JOSH - FIXME :)
378    d = 5.2;                    // :-)
379#else
380    strcpy(tmp, call_program_and_get_last_line_of_output("uname -r"));
381    p = strchr(tmp, '.');
382    if (p) {
383        p = strchr(++p, '.');
384        if (p) {
385            while (*p) {
386                *p = *(p + 1);
387                p++;
388            }
389        }
390    }
391//  log_msg(1, "tmp = '%s'", tmp);
392    d = atof(tmp);
393#endif
394    log_msg(1, "g_kernel_version = %f", d);
395    return (d);
396}
397
398
399
400
401
402/**
403 * Get the current time.
404 * @return number of seconds since the epoch.
405 */
406long get_time()
407{
408    return (long) time((void *) 0);
409}
410
411
412
413
414
415
416
417/**
418 * Initialize a RAID volume structure, setting fields to zero. The
419 * actual hard drive is unaffected.
420 *
421 * @param raidrec The RAID volume structure to initialize.
422 * @note This function is system dependent.
423 */
424#ifdef __FreeBSD__
425void initialize_raidrec(struct vinum_volume *raidrec)
426{
427    int i, j;
428    raidrec->volname[0] = '\0';
429    raidrec->plexes = 0;
430    for (i = 0; i < 9; ++i) {
431        raidrec->plex[i].raidlevel = -1;
432        raidrec->plex[i].stripesize = 0;
433        raidrec->plex[i].subdisks = 0;
434        for (j = 0; j < 9; ++j) {
435            strcpy(raidrec->plex[i].sd[j].which_device, "");
436        }
437    }
438}
439#else
440void initialize_raidrec(struct raid_device_record *raidrec)
441{
442    assert(raidrec != NULL);
443    raidrec->raid_device[0] = '\0';
444    raidrec->raid_level = 0;
445    raidrec->chunk_size = 4;
446    raidrec->persistent_superblock = 1;
447    raidrec->data_disks.entries = 0;
448    raidrec->spare_disks.entries = 0;
449    raidrec->parity_disks.entries = 0;
450    raidrec->failed_disks.entries = 0;
451    raidrec->additional_vars.entries = 0;
452}
453#endif
454
455
456
457
458/**
459 * Insert modules that Mondo requires.
460 * Currently inserts @c dos, @c fat, @c vfat, and @c osst for Linux;
461 * @c msdosfs and @c ext2fs for FreeBSD.
462 */
463void insmod_crucial_modules(void)
464{
465#ifdef __FreeBSD__
466    system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
467    system("kldstat | grep ext2fs  || kldload ext2fs 2> /dev/null");
468#else
469    system("modprobe dos &> /dev/null");
470    system("modprobe fat &> /dev/null");
471    system("modprobe vfat &> /dev/null");
472    //  system("modprobe osst &> /dev/null");
473#endif
474}
475
476
477/**
478 * Log a trace message to the trace file.
479 * @bug This function seems orphaned. Please remove.
480 */
481void log_trace(char *o)
482{
483    /*@ pointers **************************************************** */
484    FILE *fout;
485
486    /*@ buffers ***************************************************** */
487    char output[MAX_STR_LEN];
488
489    /*@ int    ****************************************************** */
490    int i;
491
492    /*@ end vars *************************************************** */
493
494    if (o[0] == '\0') {
495        return;
496    }
497    strcpy(output, o);
498    i = (int) strlen(output);
499    if (i <= 0) {
500        return;
501    }
502    if (output[i - 1] < 32) {
503        output[i - 1] = '\0';
504    }
505    if (g_text_mode
506        /* && !strstr(last_line_of_file(MONDO_LOGFILE),output) */ ) {
507        printf("%s\n", output);
508    }
509
510    fout = fopen(MONDO_TRACEFILE, "a");
511    if (fout) {
512        fprintf(fout, "%s\n", output);
513        paranoid_fclose(fout);
514    } else {
515        log_OS_error("Cannot write to tracefile");
516    }
517}
518
519
520
521
522
523/**
524 * Finish configuring the backup information structure. Call this function
525 * to set the parameters that depend on those that can be given on the command
526 * line.
527 *
528 * @param bkpinfo The backup information structure. Fields modified/used:
529 * - Used: @c bkpinfo->backup_data
530 * - Used: @c bkpinfo->backup_media_type
531 * - Used: @c bkpinfo->cdrw_speed
532 * - Used: @c bkpinfo->compression_level
533 * - Used: @c bkpinfo->include_paths
534 * - Used: @c bkpinfo->prefix
535 * - Used: @c bkpinfo->isodir
536 * - Used: @c bkpinfo->manual_cd_tray
537 * - Used: @c bkpinfo->make_cd_use_lilo
538 * - Used: @c bkpinfo->media_device
539 * - Used: @c bkpinfo->nfs_mount
540 * - Used: @c bkpinfo->nonbootable_backup
541 * - Used: @c bkpinfo->scratchdir
542 * - Used: @c bkpinfo->tmpdir
543 * - Used: @c bkpinfo->use_lzo
544 * - Modified: @c bkpinfo->call_before_iso
545 * - Modified: @c bkpinfo->call_make_iso
546 * - Modified: @c bkpinfo->optimal_set_size
547 * - Modified: @c bkpinfo->zip_exe
548 * - Modified: @c bkpinfo->zip_suffix
549 *
550 * @return number of errors, or 0 for success.
551 * @note Also creates directories that are specified in the @c bkpinfo structure but
552 * do not exist.
553 */
554int post_param_configuration(struct s_bkpinfo *bkpinfo)
555{
556    char *extra_cdrom_params;
557    char *mondo_mkisofs_sz;
558    char *command;
559    char *mtpt;
560    char *hostname, *ip_address;
561    int retval = 0;
562    long avm = 0;
563    char *colon;
564    char *cdr_exe;
565    char *tmp;
566    char call_before_iso_user[MAX_STR_LEN] = "\0";
567    int rdsiz_MB;
568    char *iso_dev;
569    char *iso_mnt;
570    char *iso_tmp;
571    char *iso_path;
572
573    assert(bkpinfo != NULL);
574    malloc_string(extra_cdrom_params);
575    malloc_string(mondo_mkisofs_sz);
576    malloc_string(command);
577    malloc_string(mtpt);
578    malloc_string(hostname);
579    malloc_string(ip_address);
580    malloc_string(cdr_exe);
581    malloc_string(tmp);
582    malloc_string(iso_dev);
583    malloc_string(iso_mnt);
584    malloc_string(iso_tmp);
585    malloc_string(iso_path);
586    bkpinfo->optimal_set_size =
587        (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 4 : 8) *
588        1024;
589
590    log_msg(1, "Foo");
591    if (bkpinfo->backup_media_type == tape) {
592        log_msg(1, "Bar");
593        sprintf(tmp, "mt -f %s status", bkpinfo->media_device);
594        log_msg(1, "tmp = '%s'", tmp);
595        if (run_program_and_log_output(tmp, 3)) {
596            fatal_error
597                ("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.");
598        }
599    }
600    make_hole_for_dir(bkpinfo->scratchdir);
601    make_hole_for_dir(bkpinfo->tmpdir);
602    if (bkpinfo->backup_media_type == iso)
603        make_hole_for_dir(bkpinfo->isodir);
604
605    run_program_and_log_output("uname -a", 5);
606    run_program_and_log_output("cat /etc/*issue*", 5);
607    sprintf(g_tmpfs_mountpt, "%s/tmpfs", bkpinfo->tmpdir);
608    sprintf(command, "mkdir -p %s", g_tmpfs_mountpt);
609    paranoid_system(command);
610    rdsiz_MB = PPCFG_RAMDISK_SIZE + g_tape_buffer_size_MB;
611#ifdef __FreeBSD__
612    strcpy(tmp,
613           call_program_and_get_last_line_of_output
614           ("vmstat | tail -1 | tr -s ' ' | cut -d' ' -f6"));
615    avm += atol(tmp);
616    strcpy(tmp,
617           call_program_and_get_last_line_of_output
618           ("swapinfo | grep -v Device | tr -s ' ' | cut -d' ' -f4 | tr '\n' '+' | sed 's/+$//' | bc"));
619    avm += atol(tmp);
620    sprintf(command, "mdmfs -s %d%c md9 %s", rdsiz_MB, 'm',
621            g_tmpfs_mountpt);
622#else
623    strcpy(tmp,
624           call_program_and_get_last_line_of_output
625           ("free | grep \":\" | tr -s ' ' '\t' | cut -f2 | head -n1"));
626    avm += atol(tmp);
627    sprintf(command, "mount /dev/shm -t tmpfs %s -o size=%d%c",
628            g_tmpfs_mountpt, rdsiz_MB, 'm');
629    run_program_and_log_output("cat /proc/cpuinfo", 5);
630    run_program_and_log_output
631        ("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc",
632         5);
633#endif
634    if (avm / 1024 > rdsiz_MB * 3) {
635        if (run_program_and_log_output(command, 5)) {
636            g_tmpfs_mountpt[0] = '\0';
637            log_it("Failed to mount tmpfs");
638        } else {
639            log_it("Tmpfs mounted OK - %d MB", rdsiz_MB);
640        }
641    } else {
642        g_tmpfs_mountpt[0] = '\0';
643        log_it("It doesn't seem you have enough swap to use tmpfs. Fine.");
644    }
645
646    if (bkpinfo->use_lzo) {
647        strcpy(bkpinfo->zip_exe, "lzop");
648        strcpy(bkpinfo->zip_suffix, "lzo");
649    } else if (bkpinfo->compression_level != 0) {
650        strcpy(bkpinfo->zip_exe, "bzip2");
651        strcpy(bkpinfo->zip_suffix, "bz2");
652    } else {
653        bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
654    }
655
656// DVD
657
658    if (bkpinfo->backup_media_type == dvd) {
659        extra_cdrom_params[0] = '\0';
660        mondo_mkisofs_sz[0] = '\0';
661        if (find_home_of_exe("growisofs")) {
662            strcpy(cdr_exe, "growisofs");
663        }                       // unlikely to be used
664        else {
665            fatal_error("Please install growisofs.");
666        }
667        if (bkpinfo->nonbootable_backup) {
668            strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
669        } else if
670#ifdef __FreeBSD__
671            (TRUE)
672#else
673            (bkpinfo->make_cd_use_lilo)
674#endif
675#ifdef __IA64__
676    {
677        strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
678    }
679#else
680    {
681        strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
682    }
683#endif
684        else
685        {
686            strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
687        }
688        if (bkpinfo->manual_cd_tray) {
689            fatal_error("Manual CD tray + DVD not supported yet.");
690            // -m isn't supported by growisofs, BTW...
691        } else {
692            sprintf(bkpinfo->call_make_iso,
693                    "%s %s -Z %s . 2>> _ERR_",
694                    mondo_mkisofs_sz,
695                    extra_cdrom_params, bkpinfo->media_device);
696        }
697        if (getenv ("SUDO_COMMAND")) {
698            fatal_error("Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
699        }
700        log_msg(2, "call_make_iso (DVD res) is ... %s",
701                bkpinfo->call_make_iso);
702    }                           // end of DVD code
703
704// CD-R or CD-RW
705    if (bkpinfo->backup_media_type == cdrw
706        || bkpinfo->backup_media_type == cdr) {
707        extra_cdrom_params[0] = '\0';
708        if (!bkpinfo->manual_cd_tray) {
709            strcat(extra_cdrom_params, "-waiti ");
710        }
711        if (bkpinfo->backup_media_type == cdrw) {
712            strcat(extra_cdrom_params, "blank=fast ");
713        }
714        if (find_home_of_exe("cdrecord")) {
715            strcpy(cdr_exe, "cdrecord");
716        } else if (find_home_of_exe("dvdrecord")) {
717            strcpy(cdr_exe, "dvdrecord");
718        } else {
719            fatal_error("Please install either cdrecord or dvdrecord.");
720        }
721        if (bkpinfo->nonbootable_backup) {
722            strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_NONBOOT);
723        } else if
724#ifdef __FreeBSD__
725            (TRUE)
726#else
727            (bkpinfo->make_cd_use_lilo)
728#endif
729#ifdef __IA64__
730    {
731        strcat(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_ELILO);
732    }
733#else
734    {
735        strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_LILO);
736    }
737#endif
738        else
739        {
740            strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_SYSLINUX);
741        }
742        if (bkpinfo->manual_cd_tray) {
743            if (bkpinfo->call_before_iso[0] == '\0') {
744            sprintf(bkpinfo->call_before_iso,
745                        "%s -o %s/temporary.iso . 2>> _ERR_",
746                        mondo_mkisofs_sz, bkpinfo->tmpdir);
747                } else {
748                strncpy(call_before_iso_user, bkpinfo->call_before_iso, MAX_STR_LEN);
749                sprintf (bkpinfo->call_before_iso,
750                                    "( %s -o %s/temporary.iso . 2>> _ERR_ ; %s )",
751                        mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
752            }
753            log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
754            sprintf(bkpinfo->call_make_iso,
755                    "%s %s -v %s fs=4m dev=%s speed=%d %s/temporary.iso",
756                    cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject",
757                    extra_cdrom_params, bkpinfo->media_device,
758                    bkpinfo->cdrw_speed, bkpinfo->tmpdir);
759        } else {
760            sprintf(bkpinfo->call_make_iso,
761                    "%s . 2>> _ERR_ | %s %s %s fs=4m dev=%s speed=%d -",
762                    mondo_mkisofs_sz, cdr_exe,
763                    (bkpinfo->please_dont_eject) ? " " : "-eject",
764                    extra_cdrom_params, bkpinfo->media_device,
765                    bkpinfo->cdrw_speed);
766        }
767    }                           // end of CD code
768
769    /*
770       if (bkpinfo->backup_data && bkpinfo->backup_media_type == tape)
771       {
772       sprintf (tmp,
773       "dd if=/dev/zero of=%s bs=%ld count=32 2> /dev/null",
774       bkpinfo->media_device, bkpinfo->internal_tape_block_size);
775       if (system(tmp))
776       {
777       retval++;
778       fprintf (stderr,
779       "Cannot write to tape device. Is the tape set read-only?\n");
780       }
781       } // end of tape code
782     */
783
784
785    if (bkpinfo->backup_media_type == iso) {
786
787/* Patch by Conor Daly <conor.daly@met.ie>
788 * 23-june-2004
789 * Break up isodir into iso_mnt and iso_path
790 * These will be used along with iso-dev at restore time
791 * to locate the ISOs where ever they're mounted
792 */
793
794        log_it("isodir = %s", bkpinfo->isodir);
795        sprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1",
796                bkpinfo->isodir);
797        log_it("command = %s", command);
798        log_it("res of it = %s",
799               call_program_and_get_last_line_of_output(command));
800        sprintf(iso_dev, "%s",
801                call_program_and_get_last_line_of_output(command));
802        sprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
803        write_one_liner_data_file(tmp,
804                                  call_program_and_get_last_line_of_output
805                                  (command));
806
807        sprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3",
808                iso_dev);
809        log_it("command = %s", command);
810        log_it("res of it = %s",
811               call_program_and_get_last_line_of_output(command));
812        sprintf(iso_mnt, "%s",
813                call_program_and_get_last_line_of_output(command));
814        sprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
815        write_one_liner_data_file(tmp,
816                                  call_program_and_get_last_line_of_output
817                                  (command));
818        log_it("isomnt: %s, %d", iso_mnt, strlen(iso_mnt));
819        sprintf(iso_tmp, "%s", bkpinfo->isodir);
820        if (strlen(iso_tmp) < strlen(iso_mnt)) {
821            iso_path[0] = '\0';
822        } else {
823            sprintf(iso_path, "%s", iso_tmp + strlen(iso_mnt));
824        }
825        sprintf(tmp, "%s/ISODIR", bkpinfo->tmpdir);
826        write_one_liner_data_file(tmp, iso_path);
827        log_it("isodir: %s", iso_path);
828        sprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
829        write_one_liner_data_file(tmp, bkpinfo->prefix);
830        log_it("iso-prefix: %s",  bkpinfo->prefix);
831
832/* End patch */
833    }                           // end of iso code
834
835    if (bkpinfo->backup_media_type == nfs) {
836        strcpy(hostname, bkpinfo->nfs_mount);
837        colon = strchr(hostname, ':');
838        if (!colon) {
839            log_it("nfs mount doesn't have a colon in it");
840            retval++;
841        } else {
842            struct hostent *hent;
843
844            *colon = '\0';
845            hent = gethostbyname(hostname);
846            if (!hent) {
847                log_it("Can't resolve NFS mount (%s): %s", hostname,
848                       hstrerror(h_errno));
849                retval++;
850            } else {
851                strcpy(ip_address, inet_ntoa
852                       ((struct in_addr)
853                        *((struct in_addr *) hent->h_addr)));
854                strcat(ip_address, strchr(bkpinfo->nfs_mount, ':'));
855                strcpy(bkpinfo->nfs_mount, ip_address);
856            }
857        }
858        store_nfs_config(bkpinfo);
859    }
860
861    log_it("Finished processing incoming params");
862    if (retval) {
863        fprintf(stderr, "Type 'man mondoarchive' for help.\n");
864    }
865    sprintf(tmp, "%s", MONDO_TMPISOS);  /* added #define 22 apr 2002 */
866    if (does_file_exist(tmp)) {
867        unlink(tmp);
868    }
869    if (strlen(bkpinfo->tmpdir) < 2 || strlen(bkpinfo->scratchdir) < 2) {
870        log_it("tmpdir or scratchdir are blank/missing");
871        retval++;
872    }
873    if (bkpinfo->include_paths[0] == '\0') {
874        //      fatal_error ("Why no backup path?");
875        strcpy(bkpinfo->include_paths, "/");
876    }
877    chmod(bkpinfo->scratchdir, 0700);
878    chmod(bkpinfo->tmpdir, 0700);
879    g_backup_media_type = bkpinfo->backup_media_type;
880    paranoid_free(mtpt);
881    paranoid_free(extra_cdrom_params);
882    paranoid_free(mondo_mkisofs_sz);
883    paranoid_free(command);
884    paranoid_free(hostname);
885    paranoid_free(ip_address);
886    paranoid_free(cdr_exe);
887    paranoid_free(tmp);
888    paranoid_free(iso_dev);
889    paranoid_free(iso_mnt);
890    paranoid_free(iso_tmp);
891    paranoid_free(iso_path);
892    return (retval);
893}
894
895
896
897/**
898 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
899 * Seeds the random-number generator, loads important modules, checks the sanity
900 * of the user's Linux distribution, and deletes logfile.
901 * @param bkpinfo The backup information structure. Will be initialized.
902 * @return number of errors (0 for success)
903 */
904int pre_param_configuration(struct s_bkpinfo *bkpinfo)
905{
906    int res = 0;
907
908    make_hole_for_dir(MNT_CDROM);
909    assert(bkpinfo != NULL);
910    srandom((unsigned long) (time(NULL)));
911    insmod_crucial_modules();
912    reset_bkpinfo(bkpinfo);     // also sets defaults ('/'=backup path, 3=compression level)
913    if (bkpinfo->disaster_recovery) {
914        if (!does_nonMS_partition_exist()) {
915            fatal_error
916                ("I am in disaster recovery mode\nPlease don't run mondoarchive.");
917        }
918    }
919
920    unlink(MONDO_TRACEFILE);
921    run_program_and_log_output("rm -Rf /tmp/changed.files*", FALSE);
922    if (find_and_store_mondoarchives_home(g_mondo_home)) {
923        fprintf(stderr,
924                "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");
925        res++;
926        return (res);
927    }
928    res += some_basic_system_sanity_checks();
929    if (res) {
930        log_it("Your distribution did not pass Mondo's sanity test.");
931    }
932    g_current_media_number = 1;
933    bkpinfo->postnuke_tarball[0] = bkpinfo->nfs_mount[0] = '\0';
934    return (res);
935}
936
937
938
939
940/**
941 * Reset all fields of the backup information structure to a sensible default.
942 * @param bkpinfo The @c bkpinfo to reset.
943 */
944void reset_bkpinfo(struct s_bkpinfo *bkpinfo)
945{
946    int i;
947
948    log_msg(1, "Hi");
949    assert(bkpinfo != NULL);
950    memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
951    bkpinfo->manual_cd_tray = FALSE;
952    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
953    bkpinfo->media_device[0] = '\0';
954    for (i = 0; i <= MAX_NOOF_MEDIA; i++) {
955        bkpinfo->media_size[i] = -1;
956    }
957    bkpinfo->boot_loader = '\0';
958    bkpinfo->boot_device[0] = '\0';
959    bkpinfo->zip_exe[0] = '\0';
960    bkpinfo->zip_suffix[0] = '\0';
961    bkpinfo->restore_path[0] = '\0';
962    bkpinfo->use_lzo = FALSE;
963    bkpinfo->do_not_compress_these[0] = '\0';
964    bkpinfo->verify_data = FALSE;
965    bkpinfo->backup_data = FALSE;
966    bkpinfo->restore_data = FALSE;
967    bkpinfo->disaster_recovery =
968        (am_I_in_disaster_recovery_mode()? TRUE : FALSE);
969    if (bkpinfo->disaster_recovery) {
970        strcpy(bkpinfo->isodir, "/");
971    } else {
972        strcpy(bkpinfo->isodir, "/root/images/mondo");
973    }
974    strcpy(bkpinfo->prefix, STD_PREFIX);
975
976    bkpinfo->scratchdir[0] = '\0';
977    bkpinfo->make_filelist = TRUE;  // unless -J supplied to mondoarchive
978    sprintf(bkpinfo->tmpdir, "/tmp/tmpfs/mondo.tmp.%d", (int) (random() % 32768));  // for mondorestore
979    bkpinfo->optimal_set_size = 0;
980    bkpinfo->backup_media_type = none;
981    strcpy(bkpinfo->include_paths, "/");
982    bkpinfo->exclude_paths[0] = '\0';
983    bkpinfo->call_before_iso[0] = '\0';
984    bkpinfo->call_make_iso[0] = '\0';
985    bkpinfo->call_burn_iso[0] = '\0';
986    bkpinfo->call_after_iso[0] = '\0';
987    bkpinfo->image_devs[0] = '\0';
988    bkpinfo->postnuke_tarball[0] = '\0';
989    bkpinfo->kernel_path[0] = '\0';
990    bkpinfo->nfs_mount[0] = '\0';
991    bkpinfo->nfs_remote_dir[0] = '\0';
992    bkpinfo->wipe_media_first = FALSE;
993    bkpinfo->differential = FALSE;
994    bkpinfo->cdrw_speed = 0;
995// patch by Herman Kuster 
996    bkpinfo->differential = 0;
997// patch end
998    bkpinfo->compression_level = 3;
999}
1000
1001
1002
1003
1004/**
1005 * Get the remaining free space (in MB) on @p partition.
1006 * @param partition The partition to check free space on (either a device or a mountpoint).
1007 * @return The free space on @p partition, in MB.
1008 */
1009long free_space_on_given_partition(char *partition)
1010{
1011    char command[MAX_STR_LEN], out_sz[MAX_STR_LEN];
1012    long res;
1013
1014    assert_string_is_neither_NULL_nor_zerolength(partition);
1015
1016    sprintf(command, "df -m -P %s &> /dev/null", partition);
1017    if (system(command)) {
1018        return (-1);
1019    }                           // partition does not exist
1020    sprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4",
1021            partition);
1022    strcpy(out_sz, call_program_and_get_last_line_of_output(command));
1023    if (strlen(out_sz) == 0) {
1024        return (-1);
1025    }                           // error within df, probably
1026    res = atol(out_sz);
1027    return (res);
1028}
1029
1030
1031
1032/**
1033 * Check the user's system for sanity. Checks performed:
1034 * - make sure user has enough RAM (32mb required, 64mb recommended)
1035 * - make sure user has enough free space in @c /
1036 * - check kernel for ramdisk support
1037 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
1038 * - make sure CD-ROM is unmounted
1039 * - make sure /etc/modules.conf exists
1040 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
1041 *
1042 * @return number of problems with the user's setup (0 for success)
1043 */
1044int some_basic_system_sanity_checks()
1045{
1046
1047    /*@ buffers ************ */
1048    char tmp[MAX_STR_LEN];
1049    //  char command[MAX_STR_LEN];
1050
1051    /*@ int's *************** */
1052    int retval = 0;
1053    long Lres;
1054
1055
1056    mvaddstr_and_log_it(g_currentY, 0,
1057                        "Checking sanity of your Linux distribution");
1058#ifndef __FreeBSD__
1059    if (system("which mkfs.vfat &> /dev/null")
1060        && !system("which mkfs.msdos &> /dev/null")) {
1061        log_it
1062            ("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
1063        run_program_and_log_output
1064            ("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
1065    }
1066    strcpy(tmp,
1067           call_program_and_get_last_line_of_output
1068           ("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
1069    if (atol(tmp) < 35000) {
1070        retval++;
1071        log_to_screen("You must have at least 32MB of RAM to use Mondo.");
1072    }
1073    if (atol(tmp) < 66000) {
1074        log_to_screen
1075            ("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
1076    }
1077#endif
1078
1079    if ((Lres = free_space_on_given_partition("/root")) == -1) {
1080        Lres = free_space_on_given_partition("/");
1081    }
1082    log_it("Free space on given partition = %ld MB", Lres);
1083
1084    if (Lres < 50) {
1085        run_program_and_log_output
1086            ("rm -Rf /root/images/mindi; mkdir -p /home/root/images/mindi; mkdir -p /root/images; ln -sf /home/root/images/mindi /root/images/mindi",
1087             3);
1088        //      fatal_error("Your / (or /root) partition has <50MB free. Please adjust your partition table to something saner.");
1089    }
1090
1091    if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
1092        retval++;
1093        log_to_screen
1094            ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
1095        fatal_error
1096            ("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. :)");
1097    }
1098#ifndef __FreeBSD__
1099    if (run_program_and_log_output
1100        ("grep ramdisk /proc/devices", FALSE)) {
1101        if (!ask_me_yes_or_no
1102            ("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?"))
1103        {
1104            //          retval++;
1105            log_to_screen
1106                ("It looks as if your kernel lacks ramdisk and initrd support.");
1107            log_to_screen
1108                ("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
1109        }
1110    }
1111#endif
1112    retval += whine_if_not_found(MKE2FS_OR_NEWFS);
1113    retval += whine_if_not_found("mkisofs");
1114    if (system("which dvdrecord > /dev/null 2> /dev/null")) {
1115        retval += whine_if_not_found("cdrecord");
1116    }
1117    retval += whine_if_not_found("bzip2");
1118    retval += whine_if_not_found("awk");
1119    retval += whine_if_not_found("md5sum");
1120    retval += whine_if_not_found("strings");
1121    retval += whine_if_not_found("mindi");
1122    retval += whine_if_not_found("buffer");
1123
1124    // abort if Windows partition but no ms-sys and parted
1125    if (!run_program_and_log_output
1126        ("mount | grep -w vfat | grep -v /dev/fd | grep -v nexdisk", 0)
1127        ||
1128        !run_program_and_log_output
1129        ("mount | grep -w dos | grep -v /dev/fd | grep -v nexdisk", 0)) {
1130        log_to_screen("I think you have a Windows 9x partition.");
1131        retval += whine_if_not_found("parted");
1132#ifndef __IA64__
1133        /* IA64 always has one vfat partition for EFI even without Windows */
1134        // retval +=
1135        if (!find_home_of_exe("ms-sys")) {
1136            log_to_screen("Please install ms-sys just in case.");
1137        }
1138#endif
1139    }
1140
1141    if (!find_home_of_exe("cmp")) {
1142        if (!find_home_of_exe("true")) {
1143            whine_if_not_found("cmp");
1144        } else {
1145            log_to_screen
1146                ("Your system lacks the 'cmp' binary. I'll create a dummy cmp for you.");
1147            if (run_program_and_log_output
1148                ("cp -f `which true` /usr/bin/cmp", 0)) {
1149                fatal_error("Failed to create dummy 'cmp' file.");
1150            }
1151        }
1152    }
1153    run_program_and_log_output
1154        ("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
1155    strcpy(tmp,
1156           call_program_and_get_last_line_of_output
1157           ("mount | grep -E \"cdr(om|w)\""));
1158    if (strcmp("", tmp)) {
1159        if (strstr(tmp, "autofs")) {
1160            log_to_screen
1161                ("Your CD-ROM is mounted via autofs. I therefore cannot tell");
1162            log_to_screen
1163                ("if a CD actually is inserted. If a CD is inserted, please");
1164            log_to_screen("eject it. Thank you.");
1165            log_it
1166                ("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
1167        } else
1168            if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
1169            retval++;
1170            fatal_error
1171                ("Your CD-ROM drive is mounted. Please unmount it.");
1172        }
1173    }
1174#ifndef __FreeBSD__
1175    if (!does_file_exist("/etc/modules.conf")) {
1176        if (does_file_exist("/etc/conf.modules")) {
1177            log_it("Linking /etc/modules.conf to /etc/conf.modules");
1178            run_program_and_log_output
1179                ("ln -sf /etc/conf.modules /etc/modules.conf", 5);
1180        } else if (does_file_exist("/etc/modprobe.d")) {
1181            log_it
1182                ("Directory /etc/modprobe.d found. mindi will use its contents.");
1183        } else if (does_file_exist("/etc/modprobe.conf")) {
1184            log_it("Linking /etc/modules.conf to /etc/modprobe.conf");
1185            run_program_and_log_output
1186                ("ln -sf /etc/modprobe.conf /etc/modules.conf", 5);
1187        } else {
1188            retval++;
1189            log_to_screen
1190                ("Please find out what happened to /etc/modules.conf");
1191        }
1192    }
1193#endif
1194
1195    run_program_and_log_output("cat /etc/fstab", 5);
1196#ifdef __FreeBSD__
1197    run_program_and_log_output("vinum printconfig", 5);
1198#else
1199    run_program_and_log_output("cat /etc/raidtab", 5);
1200#endif
1201
1202    if (run_program_and_log_output("mindi -V", 1)) {
1203        log_to_screen("Could not ascertain mindi's version number.");
1204        log_to_screen
1205            ("You have not installed Mondo and/or Mindi properly.");
1206        log_to_screen("Please uninstall and reinstall them both.");
1207        fatal_error("Please reinstall Mondo and Mindi.");
1208    }
1209    if (run_program_and_log_output
1210        ("mindi --makemountlist /tmp/mountlist.txt.test", 5)) {
1211        log_to_screen
1212            ("Mindi --makemountlist /tmp/mountlist.txt.test failed for some reason.");
1213        log_to_screen
1214            ("Please run that command by hand and examine /var/log/mindi.log");
1215        log_to_screen
1216            ("for more information. Perhaps your /etc/fstab file is insane.");
1217        log_to_screen
1218            ("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
1219        retval++;
1220    }
1221
1222    if (!run_program_and_log_output("parted2fdisk -l | grep -i raid", 1)
1223        && !does_file_exist("/etc/raidtab")) {
1224        log_to_screen
1225            ("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1226        create_raidtab_from_mdstat("/etc/raidtab", "/proc/mdstat");
1227    }
1228
1229    if (retval) {
1230        mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1231    } else {
1232        mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1233    }
1234    return (retval);
1235}
1236
1237/**
1238 * Retrieve the line containing @p label from the config file.
1239 * @param config_file The file to read from, usually @c /tmp/mondo-restore.cfg.
1240 * @param label What to read from the file.
1241 * @param value Where to put it.
1242 * @return 0 for success, 1 for failure.
1243 */
1244int read_cfg_var(char *config_file, char *label, char *value)
1245{
1246    /*@ buffer ****************************************************** */
1247    char command[MAX_STR_LEN * 2];
1248    char tmp[MAX_STR_LEN];
1249
1250    /*@ end vars *************************************************** */
1251
1252    assert_string_is_neither_NULL_nor_zerolength(config_file);
1253    assert_string_is_neither_NULL_nor_zerolength(label);
1254    if (!does_file_exist(config_file)) {
1255        sprintf(tmp, "(read_cfg_var) Cannot find %s config file",
1256                config_file);
1257        log_to_screen(tmp);
1258        value[0] = '\0';
1259        return (1);
1260    } else if (strstr(value, "/dev/") && strstr(value, "t0")
1261               && !strcmp(label, "media-dev")) {
1262        log_msg(2, "FYI, I shan't read new value for %s - already got %s",
1263                label, value);
1264        return (0);
1265    } else {
1266        sprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5",
1267                label, config_file);
1268        strcpy(value, call_program_and_get_last_line_of_output(command));
1269        if (strlen(value) == 0) {
1270            return (1);
1271        } else {
1272            return (0);
1273        }
1274    }
1275}
1276
1277
1278
1279/**
1280 * Remount @c supermount if it was unmounted earlier.
1281 */
1282void remount_supermounts_if_necessary()
1283{
1284    if (g_remount_cdrom_at_end) {
1285        run_program_and_log_output("mount " MNT_CDROM, FALSE);
1286    }
1287    if (g_remount_floppy_at_end) {
1288        run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1289    }
1290}
1291
1292/**
1293 * Unmount @c supermount if it's mounted.
1294 */
1295void unmount_supermounts_if_necessary()
1296{
1297    if (run_program_and_log_output
1298        ("mount | grep cdrom | grep super", FALSE) == 0) {
1299        g_remount_cdrom_at_end = TRUE;
1300        run_program_and_log_output("umount " MNT_CDROM, FALSE);
1301    }
1302    if (run_program_and_log_output
1303        ("mount | grep floppy | grep super", FALSE) == 0) {
1304        g_remount_floppy_at_end = TRUE;
1305        run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1306    }
1307}
1308
1309/**
1310 * Whether we had to stop autofs (if so, restart it at end).
1311 */
1312bool g_autofs_stopped = FALSE;
1313
1314/**
1315 * Path to the autofs initscript ("" if none exists).
1316 */
1317char g_autofs_exe[MAX_STR_LEN];
1318
1319/**
1320 * Autofs initscript in Xandros Linux distribution.
1321 */
1322#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1323
1324/**
1325 * Autofs initscript in most Linux distributions.
1326 */
1327#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1328
1329/**
1330 * If autofs is mounted, stop it (restart at end).
1331 */
1332void stop_autofs_if_necessary()
1333{
1334    char tmp[MAX_STR_LEN];
1335
1336    g_autofs_exe[0] = '\0';
1337    if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1338        strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1339    } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1340        strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1341    }
1342
1343    if (!g_autofs_exe[0]) {
1344        log_msg(3, "No autofs detected.");
1345    } else {
1346        log_msg(3, "%s --- autofs detected", g_autofs_exe);
1347// FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1348        sprintf(tmp, "%s stop", g_autofs_exe);
1349        if (run_program_and_log_output(tmp, 2)) {
1350            log_it("Failed to stop autofs - I assume it wasn't running");
1351        } else {
1352            g_autofs_stopped = TRUE;
1353            log_it("Stopped autofs OK");
1354        }
1355    }
1356}
1357
1358/**
1359 * If autofs was stopped earlier, restart it.
1360 */
1361void restart_autofs_if_necessary()
1362{
1363    char tmp[MAX_STR_LEN];
1364
1365    if (!g_autofs_stopped || !g_autofs_exe[0]) {
1366        log_msg(3, "No autofs detected.");
1367        return;
1368    }
1369    sprintf(tmp, "%s start", g_autofs_exe);
1370    if (run_program_and_log_output(tmp, 2)) {
1371        log_it("Failed to start autofs");
1372    } else {
1373        g_autofs_stopped = FALSE;
1374        log_it("Started autofs OK");
1375    }
1376}
1377
1378
1379/**
1380 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1381 */
1382void mount_boot_if_necessary()
1383{
1384    char tmp[MAX_STR_LEN];
1385    char command[MAX_STR_LEN];
1386
1387    log_msg(1, "Started sub");
1388    log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1389    g_boot_mountpt[0] = '\0';
1390    log_msg(4, "Done. Great. Seeting command to something");
1391    strcpy(command,
1392           "grep -v \":\" /etc/fstab | grep -vx \"#.*\" | grep -w \"/boot\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1393    log_msg(4, "Cool. Command = '%s'", command);
1394    strcpy(tmp, call_program_and_get_last_line_of_output(command));
1395    log_msg(4, "tmp = '%s'", tmp);
1396    if (tmp[0]) {
1397        log_it("/boot is at %s according to /etc/fstab", tmp);
1398        if (strstr(tmp, "LABEL=")) {
1399            if (!run_program_and_log_output("mount /boot", 5)) {
1400                strcpy(g_boot_mountpt, "/boot");
1401                log_msg(1, "Mounted /boot");
1402            } else {
1403                log_it("...ignored cos it's a label :-)");
1404            }
1405        } else {
1406            sprintf(command, "mount | grep -w \"%s\"", tmp);
1407            log_msg(3, "command = %s", command);
1408            if (run_program_and_log_output(command, 5)) {
1409                strcpy(g_boot_mountpt, tmp);
1410                sprintf(tmp,
1411                        "%s (your /boot partition) is not mounted. I'll mount it before backing up",
1412                        g_boot_mountpt);
1413                log_it(tmp);
1414                sprintf(tmp, "mount %s", g_boot_mountpt);
1415                if (run_program_and_log_output(tmp, 5)) {
1416                    g_boot_mountpt[0] = '\0';
1417                    log_msg(1, "Plan B");
1418                    if (!run_program_and_log_output("mount /boot", 5)) {
1419                        strcpy(g_boot_mountpt, "/boot");
1420                        log_msg(1, "Plan B worked");
1421                    } else {
1422                        log_msg(1,
1423                                "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1424                    }
1425                }
1426            }
1427        }
1428    }
1429    log_msg(1, "Ended sub");
1430}
1431
1432
1433/**
1434 * If we mounted /boot earlier, unmount it.
1435 */
1436void unmount_boot_if_necessary()
1437{
1438    char tmp[MAX_STR_LEN];
1439
1440    log_msg(3, "starting");
1441    if (g_boot_mountpt[0]) {
1442        sprintf(tmp, "umount %s", g_boot_mountpt);
1443        if (run_program_and_log_output(tmp, 5)) {
1444            log_it("WARNING - unable to unmount /boot");
1445        }
1446    }
1447    log_msg(3, "leaving");
1448}
1449
1450
1451
1452/**
1453 * Write a line to a configuration file. Writes a line of the form,
1454 * @c label @c value.
1455 * @param config_file The file to write to. Usually @c mondo-restore.cfg.
1456 * @param label What to call this bit of data you're writing.
1457 * @param value The bit of data you're writing.
1458 * @return 0 for success, 1 for failure.
1459 */
1460int write_cfg_var(char *config_file, char *label, char *value)
1461{
1462    /*@ buffers ***************************************************** */
1463    char command[MAX_STR_LEN * 2];
1464    char tempfile[MAX_STR_LEN];
1465    char tmp[MAX_STR_LEN];
1466
1467
1468    /*@ end vars *************************************************** */
1469    assert_string_is_neither_NULL_nor_zerolength(config_file);
1470    assert_string_is_neither_NULL_nor_zerolength(label);
1471    assert(value != NULL);
1472    if (!does_file_exist(config_file)) {
1473        sprintf(tmp, "(write_cfg_file) Cannot find %s config file",
1474                config_file);
1475        log_to_screen(tmp);
1476        return (1);
1477    }
1478    strcpy(tempfile,
1479           call_program_and_get_last_line_of_output
1480           ("mktemp -q /tmp/mojo-jojo.blah.XXXXXX"));
1481    if (does_file_exist(config_file)) {
1482        sprintf(command, "grep -vx '%s .*' %s > %s",
1483                label, config_file, tempfile);
1484        paranoid_system(command);
1485    }
1486    sprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1487    paranoid_system(command);
1488    sprintf(command, "mv -f %s %s", tempfile, config_file);
1489    paranoid_system(command);
1490    unlink(tempfile);
1491    return (0);
1492}
1493
1494
1495/**
1496 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1497 * information to the logfile.
1498 */
1499void standard_log_debug_msg(int debug_level, const char *szFile,
1500                            const char *szFunction, int nLine,
1501                            const char *fmt, ...)
1502{
1503    va_list args;
1504    int i;
1505    static int depth = 0;
1506    char *tmp;
1507    FILE *fout;
1508
1509    if (depth > 5) {
1510        depth--;
1511        return;
1512    }
1513    depth++;
1514
1515    malloc_string(tmp);
1516
1517    if (debug_level <= g_loglevel) {
1518        va_start(args, fmt);
1519        if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1520            return;
1521        }                       // fatal_error("Failed to openout to logfile - sheesh..."); }
1522
1523        // add tabs to distinguish log levels
1524        if (debug_level > 0) {
1525            for (i = 1; i < debug_level; i++)
1526                fprintf(fout, "\t");
1527            if (getpid() == g_main_pid)
1528                fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction,
1529                        nLine);
1530            else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1531                fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction,
1532                        nLine);
1533            else
1534                fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile,
1535                        szFunction, nLine);
1536        }
1537        vfprintf(fout, fmt, args);
1538
1539        // do not slow down the progran if standard debug level
1540        // must be enabled: if no flush, the log won't be up-to-date if there
1541        // is a segfault
1542        //if (g_dwDebugLevel != 1)
1543
1544        va_end(args);
1545        fprintf(fout, "\n");
1546        paranoid_fclose(fout);
1547    }
1548    depth--;
1549    paranoid_free(tmp);
1550}
1551
1552/**
1553 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1554 */
1555void (*log_debug_msg) (int, const char *, const char *, int, const char *,
1556                       ...) = standard_log_debug_msg;
1557
1558
1559/**
1560 * If @p y, malloc @p x, else free @p x.
1561 * @bug This function seems orphaned. Please remove.
1562 */
1563#define do_alloc_or_free_depending(x,y) { if(y) {x=malloc(MAX_STR_LEN);} else {paranoid_free(x);} }
1564
1565/**
1566 * Allocate or free important globals, depending on @p mal.
1567 * @param mal If TRUE, malloc; if FALSE, free.
1568 */
1569void do_libmondo_global_strings_thing(int mal)
1570{
1571    if (mal) {
1572        iamhere("Malloc'ing globals");
1573        malloc_string(g_boot_mountpt);
1574        malloc_string(g_mondo_home);
1575        malloc_string(g_tmpfs_mountpt);
1576        malloc_string(g_erase_tmpdir_and_scratchdir);
1577        malloc_string(g_serial_string);
1578        malloc_string(g_magicdev_command);
1579    } else {
1580        iamhere("Freeing globals");
1581        paranoid_free(g_boot_mountpt);
1582        paranoid_free(g_mondo_home);
1583        paranoid_free(g_tmpfs_mountpt);
1584        paranoid_free(g_erase_tmpdir_and_scratchdir);
1585        paranoid_free(g_serial_string);
1586        paranoid_free(g_magicdev_command);
1587    }
1588
1589    /*
1590       char**list_of_arrays[] = {
1591       &g_boot_mountpt,
1592       &g_mondo_home,
1593       &g_tmpfs_mountpt,
1594       &g_erase_tmpdir_and_scratchdir,
1595       &g_serial_string,
1596       &g_magicdev_command,
1597       NULL};
1598
1599       char**ppcurr;
1600       int i;
1601
1602       for(i=0;list_of_arrays[i];i++)
1603       {
1604       log_msg(5, "Allocating %d", i);
1605       ppcurr = list_of_arrays[i];
1606       if (mal)
1607       { *ppcurr = malloc(MAX_STR_LEN); }
1608       else
1609       {
1610       if (*ppcurr)
1611       {
1612       free(*ppcurr);
1613       }
1614       }
1615       }
1616       log_msg(5, "Returning");
1617     */
1618}
1619
1620/**
1621 * Allocate important globals.
1622 * @see do_libmondo_global_strings_thing
1623 */
1624void malloc_libmondo_global_strings(void)
1625{
1626    do_libmondo_global_strings_thing(1);
1627}
1628
1629/**
1630 * Free important globals.
1631 * @see do_libmondo_global_strings_thing
1632 */
1633void free_libmondo_global_strings(void)
1634{
1635    do_libmondo_global_strings_thing(0);
1636}
1637
1638
1639
1640/**
1641 * Stop @c magicdev if it's running.
1642 * The command used to start it is saved in @p g_magicdev_command.
1643 */
1644void stop_magicdev_if_necessary()
1645{
1646    strcpy(g_magicdev_command,
1647           call_program_and_get_last_line_of_output
1648           ("ps ax | grep -w magicdev | grep -v grep | tr -s '\t' ' '| cut -d' ' -f6-99"));
1649    if (g_magicdev_command[0]) {
1650        log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1651        paranoid_system("killall magicdev");
1652    }
1653}
1654
1655
1656/**
1657 * Restart magicdev if it was stopped.
1658 */
1659void restart_magicdev_if_necessary()
1660{
1661    char *tmp;
1662
1663    malloc_string(tmp);
1664    if (g_magicdev_command && g_magicdev_command[0]) {
1665        sprintf(tmp, "%s &", g_magicdev_command);
1666        paranoid_system(tmp);
1667    }
1668    paranoid_free(tmp);
1669}
1670
1671/* @} - end of utilityGroup */
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