source: trunk/mondo/mondo/common/libmondo-tools.c @ 20

Last change on this file since 20 was 20, checked in by bcornec, 14 years ago

-p option added

File size: 46.3 KB
Line 
1/* libmondo-tools.c                                  misc tools
2   $Id: libmondo-tools.c,v 1.14 2004/06/19 01:36:07 hugo Exp $
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,v 1.14 2004/06/19 01:36:07 hugo Exp $";
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,
259             int         line,
260             const char *exp) 
261{
262    static int ignoring_assertions = 0;
263    bool is_valid = TRUE;
264
265    log_it ("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line, function);
266    if (ignoring_assertions) {
267    log_it ("Well, the user doesn't care...");
268    return;
269    }
270
271#ifndef _XWIN
272    if (!g_text_mode)
273    newtSuspend();
274#endif
275    printf ("ASSERTION FAILED: `%s'\n", exp);
276    printf ("\tat %s:%d in %s\n\n", file, line, function);
277    printf ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
278    do {
279    is_valid = TRUE;
280    switch (toupper (getchar())) {
281    case 'A': // ignore (A)ll
282        ignoring_assertions = 1;
283        break;
284    case 'B': // a(B)ort
285        signal (SIGABRT, SIG_DFL); /* prevent SIGABRT handler from running */
286        raise (SIGABRT);
287        break;          /* "can't get here" */
288    case 'D': // (D)ebug, aka asm("int 3")
289#ifdef __IA32__
290        __asm__ __volatile__ ("int $3"); // break to debugger
291#endif
292        break;
293    case 'E': // (E)xit
294        fatal_error ("Failed assertion -- see above for details");
295        break;          /* "can't get here" */
296    case 'I': // (I)gnore
297        break;
298    /* These next two work as follows:
299       the `default' catches the user's invalid choice and says so;
300       the '\n' catches the newline on the end and prints the prompt again.
301    */
302    case '\n':
303        printf ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
304        break;
305    default:
306        is_valid = FALSE;
307        printf ("Invalid choice.\n");
308        break;
309    }
310    } while (!is_valid);
311
312    if (ignoring_assertions) {
313    log_it ("Ignoring ALL assertions from now on.");
314    } else {
315    log_it ("Ignoring assertion: %s", exp);
316    }
317
318    getchar(); // skip \n
319
320#ifndef _XWIN
321    if (!g_text_mode)
322    newtResume();
323#endif
324}
325
326/**
327 * Clean's up users' KDE desktops.
328 * @bug Details about this function are unknown.
329 */
330void clean_up_KDE_desktop_if_necessary(void)
331{
332  char *tmp;
333
334  malloc_string(tmp);
335  strcpy(tmp, "for i in `find /root /home -type d -name Desktop -maxdepth 2`; do \
336file=$i/.directory; if [ -f \"$file\" ] ; then mv -f $file $file.old ; \
337cat $file.old | awk '{if (index($0, \"rootimagesmindi\")) { while (length($0)>2) { getline;} ; } \
338else { print $0;};}' > $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,
355      call_program_and_get_last_line_of_output
356      ("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"));
357
358  if (home_sz[0] == '\0')
359    {
360      strcpy (home_sz,
361          call_program_and_get_last_line_of_output
362          ("find /usr -type d -path '*/mondo/restore-scripts' -follow -maxdepth 3 -printf '%h\n' 2> /dev/null"));
363    }
364  if (home_sz[0] == '\0')
365    {
366      return(1);
367    }
368  else
369    {
370      return(0);
371    }
372}
373
374
375char *get_architecture()
376{
377#ifdef __IA32__
378    return("i386");
379#endif
380#ifdef __IA64__
381    return("ia64");
382#endif
383    return("unknown");
384}
385
386
387
388double get_kernel_version()
389{
390  char *p, tmp[200];
391  double d;
392#ifdef __FreeBSD__
393  // JOSH - FIXME :)
394  d = 5.2; // :-)
395#else
396  strcpy(tmp, call_program_and_get_last_line_of_output("uname -r"));
397  p = strchr(tmp, '.');
398  if (p)
399    {
400      p = strchr(++p, '.');
401      if (p)
402        {
403      while(*p) { *p=*(p+1); p++; }
404        }
405    }
406//  log_msg(1, "tmp = '%s'", tmp);
407  d = atof(tmp);
408#endif
409  log_msg(1, "g_kernel_version = %f", d);
410  return(d);
411}
412
413
414
415
416
417/**
418 * Get the current time.
419 * @return number of seconds since the epoch.
420 */
421long
422get_time ()
423{
424
425#if 0
426
427    /*@ pointers *****************************************************/
428  FILE *fin;
429
430    /*@ buffers ******************************************************/
431  char incoming[MAX_STR_LEN];
432
433    /*@ end vars *****************************************************/
434
435  if (!(fin = popen ("date +%s", "r"))) { log_OS_error("Cannot popen date"); return(0); }
436  fgets (incoming, MAX_STR_LEN - 1, fin);
437  paranoid_pclose (fin);
438  return (atol (incoming));
439#else
440  return (long) time ((void *) 0);
441#endif
442}
443
444
445
446
447
448
449
450/**
451 * Initialize a RAID volume structure, setting fields to zero. The
452 * actual hard drive is unaffected.
453 *
454 * @param raidrec The RAID volume structure to initialize.
455 * @note This function is system dependent.
456 */
457#ifdef __FreeBSD__
458void initialize_raidrec (struct vinum_volume *raidrec)
459{
460  int i, j;
461  raidrec->volname[0] = '\0';
462  raidrec->plexes = 0;
463  for (i = 0; i < 9; ++i) {
464    raidrec->plex[i].raidlevel = -1;
465    raidrec->plex[i].stripesize = 0;
466    raidrec->plex[i].subdisks = 0;
467    for (j = 0; j < 9; ++j) {
468       strcpy (raidrec->plex[i].sd[j].which_device, "");
469    }
470  }
471}
472#else
473void initialize_raidrec (struct raid_device_record *raidrec)
474{
475  assert(raidrec!=NULL);
476  raidrec->raid_device[0] = '\0';
477  raidrec->raid_level = 0;
478  raidrec->chunk_size = 4;
479  raidrec->persistent_superblock = 1;
480  raidrec->data_disks.entries = 0;
481  raidrec->spare_disks.entries = 0;
482  raidrec->parity_disks.entries = 0;
483  raidrec->failed_disks.entries = 0;
484  raidrec->additional_vars.entries = 0;
485}
486#endif
487
488
489
490
491/**
492 * Insert modules that Mondo requires.
493 * Currently inserts @c dos, @c fat, @c vfat, and @c osst for Linux;
494 * @c msdosfs and @c ext2fs for FreeBSD.
495 */
496void insmod_crucial_modules(void)
497{
498#ifdef __FreeBSD__
499  system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
500  system("kldstat | grep ext2fs  || kldload ext2fs 2> /dev/null");
501#else
502  system("modprobe dos &> /dev/null");
503  system("modprobe fat &> /dev/null");
504  system("modprobe vfat &> /dev/null");
505  //  system("modprobe osst &> /dev/null");
506#endif
507}
508
509
510/**
511 * Log a trace message to the trace file.
512 * @bug This function seems orphaned. Please remove.
513 */
514void
515log_trace (char *o)
516{
517    /*@ pointers *****************************************************/
518  FILE *fout;
519
520    /*@ buffers ******************************************************/
521  char output[MAX_STR_LEN];
522
523    /*@ int    *******************************************************/
524  int i;
525
526    /*@ end vars ****************************************************/
527
528  if (o[0] == '\0')
529    {
530      return;
531    }
532  strcpy (output, o);
533  i = (int) strlen (output);
534  if (i <= 0)
535    {
536      return;
537    }
538  if (output[i - 1] < 32)
539    {
540      output[i - 1] = '\0';
541    }
542  if (g_text_mode /* && !strstr(last_line_of_file(MONDO_LOGFILE),output) */ )
543    {
544      printf ("%s\n", output);
545    }
546
547  fout = fopen (MONDO_TRACEFILE, "a");
548  if (fout)
549    {
550      fprintf (fout, "%s\n", output);
551      paranoid_fclose (fout);
552    }
553  else
554    {
555      log_OS_error( "Cannot write to tracefile" );
556    }
557}
558
559
560
561
562
563/**
564 * Finish configuring the backup information structure. Call this function
565 * to set the parameters that depend on those that can be given on the command
566 * line.
567 *
568 * @param bkpinfo The backup information structure. Fields modified/used:
569 * - Used: @c bkpinfo->backup_data
570 * - Used: @c bkpinfo->backup_media_type
571 * - Used: @c bkpinfo->cdrw_speed
572 * - Used: @c bkpinfo->compression_level
573 * - Used: @c bkpinfo->include_paths
574 * - Used: @c bkpinfo->prefix
575 * - Used: @c bkpinfo->isodir
576 * - Used: @c bkpinfo->manual_cd_tray
577 * - Used: @c bkpinfo->make_cd_use_lilo
578 * - Used: @c bkpinfo->media_device
579 * - Used: @c bkpinfo->nfs_mount
580 * - Used: @c bkpinfo->nonbootable_backup
581 * - Used: @c bkpinfo->scratchdir
582 * - Used: @c bkpinfo->tmpdir
583 * - Used: @c bkpinfo->use_lzo
584 * - Modified: @c bkpinfo->call_before_iso
585 * - Modified: @c bkpinfo->call_make_iso
586 * - Modified: @c bkpinfo->optimal_set_size
587 * - Modified: @c bkpinfo->zip_exe
588 * - Modified: @c bkpinfo->zip_suffix
589 *
590 * @return number of errors, or 0 for success.
591 * @note Also creates directories that are specified in the @c bkpinfo structure but
592 * do not exist.
593 */
594int post_param_configuration (struct s_bkpinfo *bkpinfo)
595{
596  char *extra_cdrom_params;
597  char *mondo_mkisofs_sz;
598  char *command;
599  char *mtpt;
600  char *hostname, *ip_address;
601  int retval=0;
602  long avm = 0;
603  char *colon;
604  char *cdr_exe;
605  char *tmp;
606  int rdsiz_MB;
607      char *iso_dev;
608      char *iso_mnt;
609      char *iso_tmp;
610      char *iso_path;
611
612  assert(bkpinfo!=NULL);
613  malloc_string(extra_cdrom_params);
614  malloc_string(mondo_mkisofs_sz);
615  malloc_string(command);
616  malloc_string(mtpt);
617  malloc_string(hostname);
618  malloc_string(ip_address);
619  malloc_string(cdr_exe);
620  malloc_string(tmp);
621      malloc_string(iso_dev);
622      malloc_string(iso_mnt);
623      malloc_string(iso_tmp);
624      malloc_string(iso_path);
625  bkpinfo->optimal_set_size = (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type)?4:8) * 1024;
626
627  log_msg(1, "Foo");
628  if (bkpinfo->backup_media_type == tape)
629    {
630      log_msg(1, "Bar");
631      sprintf(tmp, "mt -f %s status", bkpinfo->media_device);
632      log_msg(1, "tmp = '%s'", tmp);
633      if (run_program_and_log_output(tmp, 3))
634        {
635          fatal_error("Unable to open tape device. If you haven't specified it with -d, do so. If you already have, check your parameter. I think it's wrong.");
636    }
637    }   
638  make_hole_for_dir(bkpinfo->scratchdir);
639  make_hole_for_dir(bkpinfo->tmpdir);
640  if (bkpinfo->backup_media_type == iso)
641      make_hole_for_dir(bkpinfo->isodir);
642
643  run_program_and_log_output ("uname -a", 5);
644  run_program_and_log_output ("cat /etc/*issue*", 5);
645  sprintf(g_tmpfs_mountpt, "%s/tmpfs", bkpinfo->tmpdir);
646  sprintf(command, "mkdir -p %s", g_tmpfs_mountpt);
647  paranoid_system(command);
648  rdsiz_MB = PPCFG_RAMDISK_SIZE + g_tape_buffer_size_MB;
649#ifdef __FreeBSD__
650  strcpy(tmp, call_program_and_get_last_line_of_output("vmstat | tail -1 | tr -s ' ' | cut -d' ' -f6"));
651  avm += atol (tmp);
652  strcpy(tmp, call_program_and_get_last_line_of_output("swapinfo | grep -v Device | tr -s ' ' | cut -d' ' -f4 | tr '\n' '+' | sed 's/+$//' | bc"));
653  avm += atol (tmp);
654  sprintf(command, "mdmfs -s %d%c md9 %s", rdsiz_MB, 'm', g_tmpfs_mountpt);
655#else
656  strcpy(tmp, call_program_and_get_last_line_of_output("free | grep \":\" | tr -s ' ' '\t' | cut -f2 | head -n1"));
657  avm += atol (tmp);
658  sprintf(command, "mount /dev/shm -t tmpfs %s -o size=%d%c", g_tmpfs_mountpt, rdsiz_MB, 'm');
659  run_program_and_log_output ("cat /proc/cpuinfo", 5);
660  run_program_and_log_output ("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc", 5);
661#endif
662  if (avm/1024 > rdsiz_MB*3)
663    {
664      if (run_program_and_log_output(command, 5))
665    {
666      g_tmpfs_mountpt[0] = '\0';
667      log_it("Failed to mount tmpfs");
668    }
669      else
670    {
671      log_it("Tmpfs mounted OK - %d MB", rdsiz_MB);
672    }
673    }
674  else
675    {
676      g_tmpfs_mountpt[0] = '\0';
677      log_it ("It doesn't seem you have enough swap to use tmpfs. Fine.");
678    }
679
680  if (bkpinfo->use_lzo)
681    {
682      strcpy (bkpinfo->zip_exe, "lzop");
683      strcpy (bkpinfo->zip_suffix, "lzo");
684    }
685  else if (bkpinfo->compression_level!=0)
686    {
687      strcpy (bkpinfo->zip_exe, "bzip2");
688      strcpy (bkpinfo->zip_suffix, "bz2");
689    }
690  else
691    {
692      bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
693    }
694
695// DVD
696
697  if (bkpinfo->backup_media_type == dvd)
698      {
699      extra_cdrom_params[0] = '\0';
700      mondo_mkisofs_sz[0] = '\0';
701      if (find_home_of_exe("growisofs"))
702    { strcpy(cdr_exe, "growisofs"); } // unlikely to be used
703      else
704        { fatal_error("Please install growisofs."); }
705      if (bkpinfo->nonbootable_backup)
706        { strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT); }
707      else if
708#ifdef __FreeBSD__
709        (TRUE)
710#else
711        (bkpinfo->make_cd_use_lilo)
712#endif
713#ifdef __IA64__
714        { strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO); }
715#else
716        { strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO); }
717#endif
718      else
719        { strcat(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX); }
720      if (bkpinfo->manual_cd_tray)
721    {
722      fatal_error("Manual CD tray + DVD not supported yet.");
723      // -m isn't supported by growisofs, BTW...
724    }
725      else
726    {
727      sprintf (bkpinfo->call_make_iso,
728           "%s %s -Z %s . 2>> _ERR_",
729           mondo_mkisofs_sz,
730           extra_cdrom_params,
731           bkpinfo->media_device);
732        }
733      log_msg(2, "call_make_iso (DVD res) is ... %s", bkpinfo->call_make_iso);
734    } // end of DVD code
735
736// CD-R or CD-RW
737  if (bkpinfo->backup_media_type == cdrw || bkpinfo->backup_media_type == cdr)
738    {
739      extra_cdrom_params[0] = '\0';
740      if (!bkpinfo->manual_cd_tray)
741    {
742      strcat (extra_cdrom_params, "-waiti ");
743    }
744      if (bkpinfo->backup_media_type == cdrw)
745    {
746      strcat (extra_cdrom_params, "blank=fast ");
747    }
748      if (find_home_of_exe("cdrecord"))
749    { strcpy(cdr_exe, "cdrecord"); }
750      else if (find_home_of_exe("dvdrecord"))
751    { strcpy(cdr_exe, "dvdrecord"); }
752      else
753        { fatal_error("Please install either cdrecord or dvdrecord."); }
754      if (bkpinfo->nonbootable_backup)
755        { strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_NONBOOT); }
756      else if
757#ifdef __FreeBSD__
758        (TRUE)
759#else
760        (bkpinfo->make_cd_use_lilo)
761#endif
762#ifdef __IA64__
763        { strcat(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_ELILO); }
764#else
765        { strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_LILO); }
766#endif
767      else
768        { strcpy(mondo_mkisofs_sz, MONDO_MKISOFS_REGULAR_SYSLINUX); }
769      if (bkpinfo->manual_cd_tray)
770    {
771      sprintf (bkpinfo->call_before_iso,
772           "%s -o %s/temporary.iso . 2>> _ERR_", mondo_mkisofs_sz, bkpinfo->tmpdir);
773      sprintf (bkpinfo->call_make_iso,
774           "%s %s -v %s fs=4m dev=%s speed=%d %s/temporary.iso",
775           cdr_exe,
776           (bkpinfo->please_dont_eject)?" ":"-eject",
777           extra_cdrom_params, bkpinfo->media_device,
778           bkpinfo->cdrw_speed, bkpinfo->tmpdir);
779    }
780      else
781    {
782      sprintf (bkpinfo->call_make_iso,
783           "%s . 2>> _ERR_ | %s %s %s fs=4m dev=%s speed=%d -",
784           mondo_mkisofs_sz, cdr_exe,
785           (bkpinfo->please_dont_eject)?" ":"-eject",
786           extra_cdrom_params, bkpinfo->media_device,
787           bkpinfo->cdrw_speed);
788        }
789    } // end of CD code
790
791  /*
792  if (bkpinfo->backup_data && bkpinfo->backup_media_type == tape)
793    {
794      sprintf (tmp,
795           "dd if=/dev/zero of=%s bs=%ld count=32 2> /dev/null",
796           bkpinfo->media_device, bkpinfo->internal_tape_block_size);
797      if (system(tmp))
798    {
799      retval++;
800      fprintf (stderr,
801           "Cannot write to tape device. Is the tape set read-only?\n");
802    }
803    } // end of tape code
804  */
805
806
807  if (bkpinfo->backup_media_type == iso)
808    {
809
810/* Patch by Conor Daly <conor.daly@met.ie>
811 * 23-june-2004
812 * Break up isodir into iso_mnt and iso_path
813 * These will be used along with iso-dev at restore time
814 * to locate the ISOs where ever they're mounted
815 */
816
817      log_it("isodir = %s", bkpinfo->isodir);
818      sprintf(command, "df %s | tail -n1 | cut -d' ' -f1", bkpinfo->isodir);
819      log_it("command = %s", command);
820      log_it("res of it = %s", call_program_and_get_last_line_of_output(command));
821      sprintf(iso_dev, "%s", call_program_and_get_last_line_of_output(command));
822      sprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
823      write_one_liner_data_file(tmp, call_program_and_get_last_line_of_output(command));
824
825      sprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3", iso_dev);
826      log_it("command = %s", command);
827      log_it("res of it = %s", call_program_and_get_last_line_of_output(command));
828      sprintf(iso_mnt, "%s", call_program_and_get_last_line_of_output(command));
829      sprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
830      write_one_liner_data_file(tmp, call_program_and_get_last_line_of_output(command));
831log_it("isomnt: %s, %d", iso_mnt, strlen(iso_mnt));
832      sprintf(iso_tmp, "%s", bkpinfo->isodir);
833      if (strlen(iso_tmp) < strlen(iso_mnt))
834        {
835      iso_path[0] = '\0';
836    }
837      else
838        {
839          sprintf(iso_path, "%s", iso_tmp + strlen(iso_mnt));
840    }
841      sprintf(tmp, "%s/ISODIR", bkpinfo->tmpdir);
842      write_one_liner_data_file(tmp, iso_path);
843log_it("isodir: %s", iso_path);
844
845/* End patch */
846    } // end of iso code
847
848  if (bkpinfo->backup_media_type == nfs) {
849      strcpy (hostname, bkpinfo->nfs_mount);
850      colon = strchr (hostname, ':');
851      if (!colon) {
852      log_it ("nfs mount doesn't have a colon in it");
853      retval++;
854      } else {
855      struct hostent *hent;
856
857      *colon = '\0';
858      hent = gethostbyname (hostname);
859      if (!hent) {
860          log_it ("Can't resolve NFS mount (%s): %s", hostname, hstrerror (h_errno));
861          retval++;
862      } else {
863          strcpy (ip_address, inet_ntoa
864              ((struct in_addr)*((struct in_addr *)hent->h_addr)));
865          strcat (ip_address, strchr (bkpinfo->nfs_mount, ':'));
866          strcpy (bkpinfo->nfs_mount, ip_address);
867      }
868      }
869  }
870
871  log_it("Finished processing incoming params");
872  if (retval)
873    {
874      fprintf (stderr, "Type 'man mondoarchive' for help.\n");
875    }
876  sprintf (tmp, "%s", MONDO_TMPISOS);   /* added #define 22 apr 2002 */
877  if (does_file_exist (tmp))
878    {
879      unlink (tmp);
880    }
881  if (strlen (bkpinfo->tmpdir) < 2 || strlen (bkpinfo->scratchdir) < 2)
882    {
883      log_it ("tmpdir or scratchdir are blank/missing");
884      retval++;
885    }
886  if (bkpinfo->include_paths[0] == '\0')
887    {
888    //      fatal_error ("Why no backup path?");
889    strcpy (bkpinfo->include_paths, "/");
890    }
891  chmod(bkpinfo->scratchdir, 0700);
892  chmod(bkpinfo->tmpdir, 0700);
893  g_backup_media_type = bkpinfo->backup_media_type;
894  paranoid_free(mtpt);
895  paranoid_free(extra_cdrom_params);
896  paranoid_free(mondo_mkisofs_sz);
897  paranoid_free(command);
898  paranoid_free(hostname);
899  paranoid_free(ip_address);
900  paranoid_free(cdr_exe);
901  paranoid_free(tmp);
902  paranoid_free(iso_dev);
903  paranoid_free(iso_mnt);
904  paranoid_free(iso_tmp);
905  paranoid_free(iso_path);
906  return(retval);
907}
908
909
910
911/**
912 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
913 * Seeds the random-number generator, loads important modules, checks the sanity
914 * of the user's Linux distribution, and deletes logfile.
915 * @param bkpinfo The backup information structure. Will be initialized.
916 * @return number of errors (0 for success)
917 */
918int pre_param_configuration(struct s_bkpinfo *bkpinfo)
919{
920  int res=0;
921
922  make_hole_for_dir(MNT_CDROM);
923  assert(bkpinfo!=NULL);
924  srandom ((unsigned long)(time (NULL)));
925  insmod_crucial_modules();
926  reset_bkpinfo (bkpinfo); // also sets defaults ('/'=backup path, 3=compression level)
927  if (bkpinfo->disaster_recovery) {
928    if (!does_nonMS_partition_exist()) {
929      fatal_error ("I am in disaster recovery mode\nPlease don't run mondoarchive.");
930    }
931  }
932
933  unlink (MONDO_TRACEFILE);
934  run_program_and_log_output( "rm -Rf /tmp/changed.files*", FALSE);
935  if (find_and_store_mondoarchives_home(g_mondo_home))
936    {
937      fprintf (stderr,
938           "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");
939      res++;
940      return(res);
941    }
942  res += some_basic_system_sanity_checks ();
943  if (res)
944    {
945      log_it ("Your distribution did not pass Mondo's sanity test.");
946    }
947  g_current_media_number = 1;
948  bkpinfo->postnuke_tarball[0] = bkpinfo->nfs_mount[0] = '\0';
949  return(res);
950}
951
952
953
954
955/**
956 * Reset all fields of the backup information structure to a sensible default.
957 * @param bkpinfo The @c bkpinfo to reset.
958 */
959void
960reset_bkpinfo (struct s_bkpinfo *bkpinfo)
961{
962  int i;
963
964  log_msg(1, "Hi");
965  assert(bkpinfo!=NULL);
966  memset((void*)bkpinfo, 0, sizeof(struct s_bkpinfo));
967  bkpinfo->manual_cd_tray = FALSE;
968  bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
969  bkpinfo->media_device[0] = '\0';
970  for(i=0; i<=MAX_NOOF_MEDIA; i++) { bkpinfo->media_size[i] = -1; }
971  bkpinfo->boot_loader = '\0';
972  bkpinfo->boot_device[0] = '\0';
973  bkpinfo->zip_exe[0] = '\0';
974  bkpinfo->zip_suffix[0] = '\0';
975  bkpinfo->restore_path[0] = '\0';
976  bkpinfo->use_lzo = FALSE;
977  bkpinfo->do_not_compress_these[0] = '\0';
978  bkpinfo->verify_data = FALSE;
979  bkpinfo->backup_data = FALSE;
980  bkpinfo->restore_data = FALSE;
981  bkpinfo->disaster_recovery = (am_I_in_disaster_recovery_mode()?TRUE:FALSE);
982  if (bkpinfo->disaster_recovery)
983    { strcpy(bkpinfo->isodir, "/"); }
984  else
985    { strcpy (bkpinfo->isodir, "/root/images/mondo"); }
986  strcpy (bkpinfo->prefix, "mondorescue");
987
988  bkpinfo->scratchdir[0] = '\0';
989  bkpinfo->make_filelist = TRUE; // unless -J supplied to mondoarchive
990  sprintf( bkpinfo->tmpdir, "/tmp/tmpfs/mondo.tmp.%d", (int) ( random() %32768 ) ); // for mondorestore
991  bkpinfo->optimal_set_size = 0;
992  bkpinfo->backup_media_type = none;
993  strcpy (bkpinfo->include_paths, "/");
994  bkpinfo->exclude_paths[0] = '\0';
995  bkpinfo->call_before_iso[0] = '\0';
996  bkpinfo->call_make_iso[0] = '\0';
997  bkpinfo->call_burn_iso[0] = '\0';
998  bkpinfo->call_after_iso[0] = '\0';
999  bkpinfo->image_devs[0] = '\0';
1000  bkpinfo->postnuke_tarball[0] = '\0';
1001  bkpinfo->kernel_path[0] = '\0';
1002  bkpinfo->nfs_mount[0] = '\0';
1003  bkpinfo->nfs_remote_dir[0] = '\0';
1004  bkpinfo->wipe_media_first = FALSE;
1005  bkpinfo->differential = FALSE;
1006  bkpinfo->cdrw_speed = 0;
1007// patch by Herman Kuster 
1008  bkpinfo->differential = 0;
1009// patch end
1010  bkpinfo->compression_level = 3;
1011}
1012
1013
1014
1015
1016/**
1017 * Get the remaining free space (in MB) on @p partition.
1018 * @param partition The partition to check free space on (either a device or a mountpoint).
1019 * @return The free space on @p partition, in MB.
1020 */
1021long free_space_on_given_partition(char*partition)
1022{
1023  char command[MAX_STR_LEN], out_sz[MAX_STR_LEN];
1024  long res;
1025
1026  assert_string_is_neither_NULL_nor_zerolength(partition);
1027
1028  sprintf(command, "df -m %s &> /dev/null", partition);
1029  if (system(command))
1030    { return(-1); } // partition does not exist
1031  sprintf(command, "df -m %s | tail -n1 | tr -s ' ' '\t' | cut -f4", partition);
1032  strcpy(out_sz, call_program_and_get_last_line_of_output(command));
1033  if (strlen(out_sz)==0)
1034    { return(-1); } // error within df, probably
1035  res = atol(out_sz);
1036  return(res);
1037}
1038
1039
1040
1041/**
1042 * Check the user's system for sanity. Checks performed:
1043 * - make sure user has enough RAM (32mb required, 64mb recommended)
1044 * - make sure user has enough free space in @c /
1045 * - check kernel for ramdisk support
1046 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
1047 * - make sure CD-ROM is unmounted
1048 * - make sure /etc/modules.conf exists
1049 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
1050 *
1051 * @return number of problems with the user's setup (0 for success)
1052 */
1053int
1054some_basic_system_sanity_checks ()
1055{
1056
1057    /*@ buffers *************/
1058  char tmp[MAX_STR_LEN];
1059  //  char command[MAX_STR_LEN];
1060
1061    /*@ int's ****************/
1062  int retval = 0;
1063  long Lres;
1064
1065
1066  mvaddstr_and_log_it (g_currentY, 0,
1067               "Checking sanity of your Linux distribution");
1068#ifndef __FreeBSD__
1069  if (system("which mkfs.vfat &> /dev/null") && !system("which mkfs.msdos &> /dev/null"))
1070    {
1071      log_it("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
1072      run_program_and_log_output("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
1073    }
1074  strcpy (tmp,
1075      call_program_and_get_last_line_of_output
1076      ("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
1077  if (atol (tmp) < 35000)
1078    {
1079      retval++;
1080      log_to_screen ("You must have at least 32MB of RAM to use Mondo.");
1081    }
1082  if (atol (tmp) < 66000)
1083    {
1084      log_to_screen
1085    ("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
1086    }
1087#endif
1088
1089  if ((Lres = free_space_on_given_partition("/root"))==-1)
1090    { Lres = free_space_on_given_partition("/"); }
1091  log_it("Free space on given partition = %ld MB", Lres);
1092
1093  if (Lres < 50)
1094    {
1095      run_program_and_log_output("rm -Rf /root/images/mindi; mkdir -p /home/root/images/mindi; mkdir -p /root/images; ln -sf /home/root/images/mindi /root/images/mindi", 3);
1096      //      fatal_error("Your / (or /root) partition has <50MB free. Please adjust your partition table to something saner.");
1097    } 
1098
1099  if (system ("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null"))
1100    {
1101      retval++;
1102      log_to_screen
1103    ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
1104      fatal_error
1105        ("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. :)");
1106    }
1107#ifndef __FreeBSD__
1108  if (run_program_and_log_output ("cat /proc/devices | grep ramdisk", FALSE))
1109    {
1110      if (!ask_me_yes_or_no("Your kernel has no ramdisk support. That's mind-numbingly stupid but I'll allow it if you're planning to use a failsafe kernel. Are you?"))
1111        {
1112      //          retval++;
1113          log_to_screen
1114            ("It looks as if your kernel lacks ramdisk and initrd support.");
1115      log_to_screen
1116        ("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
1117        }
1118    }
1119#endif
1120  retval += whine_if_not_found (MKE2FS_OR_NEWFS);
1121  retval += whine_if_not_found ("mkisofs");
1122  if (system("which dvdrecord > /dev/null 2> /dev/null"))
1123    { retval += whine_if_not_found ("cdrecord"); }
1124  retval += whine_if_not_found ("bzip2");
1125  retval += whine_if_not_found ("awk");
1126  retval += whine_if_not_found ("md5sum");
1127  retval += whine_if_not_found ("strings");
1128  retval += whine_if_not_found ("mindi");
1129  retval += whine_if_not_found ("buffer");
1130
1131  // abort if Windows partition but no ms-sys and parted
1132  if (!run_program_and_log_output("mount | grep -w vfat | grep -v /dev/fd | grep -v nexdisk", 0) ||
1133      !run_program_and_log_output("mount | grep -w dos | grep -v /dev/fd | grep -v nexdisk", 0))
1134    {
1135      log_to_screen("I think you have a Windows 9x partition.");
1136      retval += whine_if_not_found ("parted");
1137#ifndef __IA64__
1138      /* IA64 always has one vfat partition for EFI even without Windows */
1139      // retval +=
1140      if (!find_home_of_exe("ms-sys"))
1141        {
1142      log_to_screen("Please install ms-sys just in case.");
1143    }
1144#endif
1145    }
1146
1147  if (!find_home_of_exe("cmp"))
1148    {
1149      if (!find_home_of_exe("true"))
1150        { whine_if_not_found ("cmp"); }
1151      else
1152        {
1153          log_to_screen("Your system lacks the 'cmp' binary. I'll create a dummy cmp for you.");
1154          if (run_program_and_log_output("cp -f `which true` /usr/bin/cmp", 0))
1155            { fatal_error("Failed to create dummy 'cmp' file."); }
1156        }
1157    }
1158  run_program_and_log_output("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
1159  strcpy (tmp,
1160      call_program_and_get_last_line_of_output
1161      ("mount | grep -E \"cdr(om|w)\""));
1162  if (strcmp ("", tmp))
1163    {
1164    if (strstr (tmp, "autofs")) {
1165        log_to_screen ("Your CD-ROM is mounted via autofs. I therefore cannot tell");
1166        log_to_screen ("if a CD actually is inserted. If a CD is inserted, please");
1167        log_to_screen ("eject it. Thank you.");
1168        log_it ("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
1169    } else if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
1170        retval++;
1171        fatal_error ("Your CD-ROM drive is mounted. Please unmount it.");
1172    }
1173    }
1174#ifndef __FreeBSD__
1175  if (!does_file_exist ("/etc/modules.conf"))
1176    {
1177      if (does_file_exist("/etc/conf.modules"))
1178        {
1179          log_it("Linking /etc/modules.conf to /etc/conf.modules");
1180          run_program_and_log_output("ln -sf /etc/conf.modules /etc/modules.conf", 5);
1181        }
1182      else if (does_file_exist("/etc/modprobe.d"))
1183    {
1184      log_it("Directory /etc/modprobe.d found. mindi will use its contents.");
1185    }
1186      else if (does_file_exist("/etc/modprobe.conf"))
1187        {
1188          log_it("Linking /etc/modules.conf to /etc/modprobe.conf");
1189          run_program_and_log_output("ln -sf /etc/modprobe.conf /etc/modules.conf", 5);
1190    }
1191      else
1192        {
1193          retval++;
1194          log_to_screen ("Please find out what happened to /etc/modules.conf");
1195        }
1196    }
1197#endif
1198
1199  run_program_and_log_output("cat /etc/fstab", 5);
1200#ifdef __FreeBSD__
1201  run_program_and_log_output("vinum printconfig", 5);
1202#else
1203  run_program_and_log_output("cat /etc/raidtab", 5);
1204#endif
1205
1206  if (run_program_and_log_output("mindi -V", 1))
1207    {
1208      log_to_screen("Could not ascertain mindi's version number.");
1209      log_to_screen("You have not installed Mondo and/or Mindi properly.");
1210      log_to_screen("Please uninstall and reinstall them both.");
1211      fatal_error("Please reinstall Mondo and Mindi.");
1212    }
1213  if (run_program_and_log_output("mindi --makemountlist /tmp/mountlist.txt.test", 5))
1214    {
1215      log_to_screen("Mindi --makemountlist /tmp/mountlist.txt.test failed for some reason.");
1216      log_to_screen("Please run that command by hand and examine /var/log/mindi.log");
1217      log_to_screen("for more information. Perhaps your /etc/fstab file is insane.");
1218      log_to_screen("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
1219      retval++;
1220    }
1221
1222  if (!run_program_and_log_output("fdisk -l | grep -i raid", 1) && !does_file_exist("/etc/raidtab"))
1223    {
1224      log_to_screen("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1225      create_raidtab_from_mdstat("/etc/raidtab", "/proc/mdstat");
1226    }
1227 
1228  if (retval)
1229    {
1230      mvaddstr_and_log_it (g_currentY++, 74, "Failed.");
1231    }
1232  else
1233    {
1234      mvaddstr_and_log_it (g_currentY++, 74, "Done.");
1235    }
1236  return (retval);
1237}
1238
1239/**
1240 * Retrieve the line containing @p label from the config file.
1241 * @param config_file The file to read from, usually @c /tmp/mondo-restore.cfg.
1242 * @param label What to read from the file.
1243 * @param value Where to put it.
1244 * @return 0 for success, 1 for failure.
1245 */
1246int
1247read_cfg_var (char *config_file, char *label, char *value)
1248{
1249    /*@ buffer *******************************************************/
1250  char command[MAX_STR_LEN*2];
1251  char tmp[MAX_STR_LEN];
1252
1253    /*@ end vars ****************************************************/
1254
1255  assert_string_is_neither_NULL_nor_zerolength(config_file);
1256  assert_string_is_neither_NULL_nor_zerolength(label);
1257  if (!does_file_exist (config_file))
1258    {
1259      sprintf (tmp, "(read_cfg_var) Cannot find %s config file", config_file);
1260      log_to_screen (tmp);
1261      value[0] = '\0';
1262      return (1);
1263    }
1264  else if (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))
1265    {
1266      log_msg (2, "FYI, I shan't read new value for %s - already got %s", label, value);
1267      return(0);
1268    }
1269  else
1270    {
1271      sprintf (command, "cat %s | grep \"%s .*\" | cut -d' ' -f2,3,4,5",
1272           config_file, label);
1273      strcpy (value, call_program_and_get_last_line_of_output (command));
1274      if (strlen (value) == 0)
1275    {
1276      return (1);
1277    }
1278      else
1279    {
1280      return (0);
1281    }
1282    }
1283}
1284
1285
1286
1287/**
1288 * Remount @c supermount if it was unmounted earlier.
1289 */
1290void remount_supermounts_if_necessary()
1291{
1292  if (g_remount_cdrom_at_end)
1293    {
1294      run_program_and_log_output ("mount "MNT_CDROM, FALSE);
1295    }
1296  if (g_remount_floppy_at_end)
1297    {
1298      run_program_and_log_output ("mount "MNT_FLOPPY, FALSE);
1299    }
1300}
1301
1302/**
1303 * Unmount @c supermount if it's mounted.
1304 */
1305void unmount_supermounts_if_necessary()
1306{
1307  if (run_program_and_log_output ("mount | grep cdrom | grep super", FALSE) == 0)
1308    {
1309      g_remount_cdrom_at_end = TRUE;
1310      run_program_and_log_output ("umount "MNT_CDROM, FALSE);
1311    }
1312  if (run_program_and_log_output ("mount | grep floppy | grep super", FALSE) == 0)
1313    {
1314      g_remount_floppy_at_end = TRUE;
1315      run_program_and_log_output ("umount "MNT_FLOPPY, FALSE);
1316    }
1317}
1318
1319/**
1320 * Whether we had to stop autofs (if so, restart it at end).
1321 */
1322bool g_autofs_stopped=FALSE;
1323
1324/**
1325 * Path to the autofs initscript ("" if none exists).
1326 */
1327char g_autofs_exe[MAX_STR_LEN];
1328
1329/**
1330 * Autofs initscript in Xandros Linux distribution.
1331 */
1332#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1333
1334/**
1335 * Autofs initscript in most Linux distributions.
1336 */
1337#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1338
1339/**
1340 * If autofs is mounted, stop it (restart at end).
1341 */
1342void stop_autofs_if_necessary()
1343{
1344  char tmp[MAX_STR_LEN];
1345 
1346  g_autofs_exe[0] = '\0';
1347  if (does_file_exist(XANDROS_AUTOFS_FNAME))
1348    { strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME); } 
1349  else if (does_file_exist(STOCK_AUTOFS_FNAME))
1350    { strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME); }
1351   
1352  if (!g_autofs_exe[0]) { log_msg(3, "No autofs detected."); } 
1353  else
1354    {
1355      log_msg(3, "%s --- autofs detected", g_autofs_exe);
1356// FIXME -- only disable it if it's running ---  sprintf(tmp, "%s status", autofs_exe);
1357      sprintf(tmp, "%s stop", g_autofs_exe);
1358      if (run_program_and_log_output(tmp, 2))
1359        { log_it("Failed to stop autofs - I assume it wasn't running"); }
1360      else
1361        { g_autofs_stopped = TRUE; log_it("Stopped autofs OK"); }
1362    }
1363}
1364
1365/**
1366 * If autofs was stopped earlier, restart it.
1367 */
1368void restart_autofs_if_necessary()
1369{
1370  char tmp[MAX_STR_LEN];
1371 
1372  if (!g_autofs_stopped || !g_autofs_exe[0]) { log_msg(3, "No autofs detected."); return; } 
1373  sprintf(tmp, "%s start", g_autofs_exe);
1374  if (run_program_and_log_output(tmp, 2))
1375    { log_it("Failed to start autofs"); }
1376  else
1377    { g_autofs_stopped = FALSE; log_it("Started autofs OK"); }
1378}
1379
1380
1381/**
1382 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1383 */
1384void mount_boot_if_necessary()
1385{
1386  char tmp[MAX_STR_LEN];
1387  char command[MAX_STR_LEN];
1388
1389  log_msg(1, "Started sub");
1390  log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1391  g_boot_mountpt[0] = '\0';
1392  log_msg(4, "Done. Great. Seeting command to something");
1393  strcpy(command, "cat /etc/fstab | grep -v \":\" | grep -vx \"#.*\" | grep -w \"/boot\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1394  log_msg(4, "Cool. Command = '%s'", command);
1395  strcpy(tmp, call_program_and_get_last_line_of_output(command));
1396  log_msg(4, "tmp = '%s'", tmp);
1397  if (tmp[0])
1398    {
1399      log_it("/boot is at %s according to /etc/fstab", tmp);
1400      if (strstr(tmp, "LABEL="))
1401        {
1402      if (!run_program_and_log_output("mount /boot", 5))
1403        {
1404          strcpy(g_boot_mountpt, "/boot");
1405          log_msg(1, "Mounted /boot");
1406        }
1407      else
1408        {
1409          log_it("...ignored cos it's a label :-)"); 
1410        }
1411    }
1412      else
1413        {
1414          sprintf(command, "mount | grep -w \"%s\"", tmp);
1415          log_msg(3, "command = %s", command);
1416          if (run_program_and_log_output(command, 5))
1417            {
1418          strcpy(g_boot_mountpt, tmp);
1419              sprintf(tmp, "%s (your /boot partition) is not mounted. I'll mount it before backing up", g_boot_mountpt);
1420          log_it(tmp);
1421          sprintf(tmp, "mount %s", g_boot_mountpt);
1422          if (run_program_and_log_output(tmp, 5))
1423        { 
1424          g_boot_mountpt[0] = '\0';
1425          log_msg(1, "Plan B");
1426          if (!run_program_and_log_output("mount /boot", 5))
1427            {
1428              strcpy(g_boot_mountpt, "/boot");
1429              log_msg(1, "Plan B worked");
1430            }
1431          else
1432            {
1433              log_msg(1, "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1434            }
1435        }
1436            }
1437        }
1438    }
1439  log_msg(1, "Ended sub");
1440}
1441
1442
1443/**
1444 * If we mounted /boot earlier, unmount it.
1445 */
1446void unmount_boot_if_necessary()
1447{
1448  char tmp[MAX_STR_LEN];
1449
1450  log_msg(3, "starting");
1451  if (g_boot_mountpt[0])
1452    {
1453      sprintf(tmp, "umount %s", g_boot_mountpt);
1454      if (run_program_and_log_output(tmp, 5))
1455    { log_it("WARNING - unable to unmount /boot"); }
1456    }
1457   log_msg(3, "leaving");
1458}
1459
1460
1461
1462/**
1463 * Write a line to a configuration file. Writes a line of the form,
1464 * @c label @c value.
1465 * @param config_file The file to write to. Usually @c mondo-restore.cfg.
1466 * @param label What to call this bit of data you're writing.
1467 * @param value The bit of data you're writing.
1468 * @return 0 for success, 1 for failure.
1469 */
1470int
1471write_cfg_var (char *config_file, char *label, char *value)
1472{
1473    /*@ buffers ******************************************************/
1474  char command[MAX_STR_LEN*2];
1475  char tempfile[MAX_STR_LEN];
1476  char tmp[MAX_STR_LEN];
1477
1478
1479    /*@ end vars ****************************************************/
1480  assert_string_is_neither_NULL_nor_zerolength(config_file);
1481  assert_string_is_neither_NULL_nor_zerolength(label);
1482  assert(value!=NULL);
1483  if (!does_file_exist (config_file))
1484    {
1485      sprintf (tmp, "(write_cfg_file) Cannot find %s config file",
1486           config_file);
1487      log_to_screen (tmp);
1488      return(1);
1489    }
1490  strcpy (tempfile,
1491      call_program_and_get_last_line_of_output
1492      ("mktemp -q /tmp/mojo-jojo.blah.XXXXXX"));
1493  if (does_file_exist (config_file))
1494    {
1495      sprintf (command, "cat %s | grep -vx \"%s .*\" > %s", config_file,
1496           label, tempfile);
1497      paranoid_system (command);
1498    }
1499  sprintf (command, "echo \"%s %s\" >> %s", label, value, tempfile);
1500  paranoid_system (command);
1501  sprintf (command, "mv -f %s %s", tempfile, config_file);
1502  paranoid_system (command);
1503  unlink (tempfile);
1504  return (0);
1505}
1506
1507
1508/**
1509 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1510 * information to the logfile.
1511 */
1512void standard_log_debug_msg(int debug_level, const char *szFile,
1513                const char *szFunction, int nLine, const char *fmt, ...)
1514{
1515  va_list args;
1516  int i;
1517  static int depth=0; 
1518  char *tmp;
1519  FILE*fout;
1520
1521  if (depth>5) { depth--; return; }
1522  depth++;
1523
1524  malloc_string(tmp);
1525
1526  if (debug_level <= g_loglevel)
1527    {
1528      va_start(args, fmt);
1529      if (!(fout = fopen (MONDO_LOGFILE, "a")))
1530    { return; } // fatal_error("Failed to openout to logfile - sheesh..."); }
1531
1532      // add tabs to distinguish log levels
1533      if (debug_level > 0)
1534    {
1535      for (i = 1; i < debug_level; i++)
1536        fprintf(fout, "\t");
1537      if (getpid() == g_main_pid)
1538        fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction, nLine);
1539      else if (getpid() == g_buffer_pid && g_buffer_pid>0)
1540        fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction, nLine);
1541      else
1542        fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile, szFunction, nLine);
1543    }
1544      vfprintf(fout, fmt, args);
1545
1546    // do not slow down the progran if standard debug level
1547    // must be enabled: if no flush, the log won't be up-to-date if there
1548    // is a segfault
1549    //if (g_dwDebugLevel != 1)
1550
1551      va_end(args);
1552      fprintf(fout, "\n");
1553      paranoid_fclose(fout);
1554    }
1555  depth--;
1556  paranoid_free(tmp);
1557}
1558
1559/**
1560 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1561 */
1562void (*log_debug_msg) (int, const char *, const char *, int, const char *, ...) = standard_log_debug_msg;
1563
1564
1565/**
1566 * If @p y, malloc @p x, else free @p x.
1567 * @bug This function seems orphaned. Please remove.
1568 */
1569#define do_alloc_or_free_depending(x,y) { if(y) {x=malloc(MAX_STR_LEN);} else {paranoid_free(x);} }
1570
1571/**
1572 * Allocate or free important globals, depending on @p mal.
1573 * @param mal If TRUE, malloc; if FALSE, free.
1574 */
1575void do_libmondo_global_strings_thing(int mal)
1576{
1577  if (mal)
1578    {
1579      iamhere("Malloc'ing globals");
1580      malloc_string(g_boot_mountpt);
1581      malloc_string(g_mondo_home);
1582      malloc_string(g_tmpfs_mountpt);
1583      malloc_string(g_erase_tmpdir_and_scratchdir);
1584      malloc_string(g_serial_string);
1585      malloc_string(g_magicdev_command);
1586    }
1587  else
1588    {
1589      iamhere("Freeing globals");
1590      paranoid_free(g_boot_mountpt);
1591      paranoid_free(g_mondo_home);
1592      paranoid_free(g_tmpfs_mountpt);
1593      paranoid_free(g_erase_tmpdir_and_scratchdir);
1594      paranoid_free(g_serial_string);
1595      paranoid_free(g_magicdev_command);
1596    }
1597
1598  /*
1599  char**list_of_arrays[] = {
1600    &g_boot_mountpt,
1601    &g_mondo_home,
1602    &g_tmpfs_mountpt,
1603    &g_erase_tmpdir_and_scratchdir,
1604    &g_serial_string,
1605    &g_magicdev_command,
1606    NULL};
1607
1608  char**ppcurr;
1609  int i;
1610 
1611  for(i=0;list_of_arrays[i];i++)
1612    {
1613      log_msg(5, "Allocating %d", i);
1614      ppcurr = list_of_arrays[i];
1615      if (mal)
1616        { *ppcurr = malloc(MAX_STR_LEN); }
1617      else
1618        {
1619      if (*ppcurr)
1620        {
1621          free(*ppcurr);
1622        }
1623    }
1624    }
1625  log_msg(5, "Returning");
1626  */
1627}
1628
1629/**
1630 * Allocate important globals.
1631 * @see do_libmondo_global_strings_thing
1632 */
1633void malloc_libmondo_global_strings(void)
1634{
1635  do_libmondo_global_strings_thing(1);
1636}
1637
1638/**
1639 * Free important globals.
1640 * @see do_libmondo_global_strings_thing
1641 */
1642void free_libmondo_global_strings(void)
1643{
1644  do_libmondo_global_strings_thing(0);
1645}
1646
1647
1648
1649/**
1650 * Stop @c magicdev if it's running.
1651 * The command used to start it is saved in @p g_magicdev_command.
1652 */
1653void stop_magicdev_if_necessary()
1654{
1655  strcpy(g_magicdev_command, call_program_and_get_last_line_of_output("ps ax | grep -w magicdev | grep -v grep | tr -s '\t' ' '| cut -d' ' -f6-99"));
1656  if (g_magicdev_command[0])
1657    {
1658      log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1659      paranoid_system("killall magicdev");
1660    }
1661}
1662
1663
1664/**
1665 * Restart magicdev if it was stopped.
1666 */
1667void restart_magicdev_if_necessary()
1668{
1669  char *tmp;
1670 
1671  malloc_string(tmp);
1672  if (g_magicdev_command && g_magicdev_command[0])
1673    {
1674      sprintf(tmp, "%s &", g_magicdev_command);
1675      paranoid_system(tmp);
1676    }
1677  paranoid_free(tmp);
1678}
1679
1680/* @} - end of utilityGroup */
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