source: MondoRescue/branches/3.2/mondo/src/common/libmondo-tools.c@ 3502

Last change on this file since 3502 was 3502, checked in by Bruno Cornec, 8 years ago
  • Adds support for xorriso for UEFI distributions using it such as Debian 8
  • Property svn:keywords set to Id
File size: 39.7 KB
Line 
1/*
2 $Id: libmondo-tools.c 3502 2016-02-09 13:34:54Z bruno $
3*/
4
5
6/**
7 * @file
8 * Miscellaneous tools that didn't really fit anywhere else.
9 */
10
11#include "my-stuff.h"
12#include "mr_mem.h"
13#include "mr_sys.h"
14#include "mondostructures.h"
15#include "lib-common-externs.h"
16#include "libmondo-tools.h"
17#include "libmondo-gui-EXT.h"
18#include "libmondo-files-EXT.h"
19#include "libmondo-fork-EXT.h"
20#include "libmondo-raid-EXT.h"
21#include "libmondo-devices-EXT.h"
22#include <sys/socket.h>
23#include <netdb.h>
24#include <stdlib.h>
25#include <netinet/in.h>
26#include <arpa/inet.h>
27#include <sys/utsname.h>
28
29/*@unused@*/
30//static char cvsid[] = "$Id: libmondo-tools.c 3502 2016-02-09 13:34:54Z bruno $";
31
32extern int g_tape_buffer_size_MB;
33extern bool g_text_mode;
34extern int g_currentY;
35extern int g_current_media_number;
36extern char *MONDO_LOGFILE;
37
38/* Reference to global bkpinfo */
39extern struct s_bkpinfo *bkpinfo;
40
41/**
42 * @addtogroup globalGroup
43 * @{
44 */
45bool g_remount_cdrom_at_end, ///< TRUE if we unmounted the CD-ROM and should remount it when done with the backup.
46 g_remount_floppy_at_end; ///< TRUE if we unmounted the floppy and should remount it when done with the backup.
47bool g_cd_recovery = FALSE; ///< TRUE if we're making an "autonuke" backup.
48double g_kernel_version;
49
50/**
51 * The place where /boot is mounted.
52 */
53char *g_boot_mountpt = NULL;
54
55/**
56 * The location of Mondo's home directory.
57 */
58char *g_mondo_home = NULL;
59
60/**
61 * The serial string (used to differentiate between backups) of the current backup.
62 */
63extern char *g_serial_string;
64
65/**
66 * The location where tmpfs is mounted, or "" if it's not mounted.
67char *g_tmpfs_mountpt = NULL;
68 */
69char *g_magicdev_command = NULL;
70
71/**
72 * The default maximum level to log messages at or below.
73 */
74int g_loglevel = DEFAULT_DEBUG_LEVEL;
75
76/* @} - end of globalGroup */
77
78
79extern pid_t g_buffer_pid;
80extern pid_t g_main_pid;
81
82extern t_bkptype g_backup_media_type;
83
84extern bool am_I_in_disaster_recovery_mode(void);
85
86/*-----------------------------------------------------------*/
87
88
89/**
90 * @addtogroup utilityGroup
91 * @{
92 */
93/**
94 * Assertion handler. Prints a friendly message to the user,
95 * offering to ignore all, dump core, break to debugger,
96 * exit, or ignore. Intended to be used with an assert() macro.
97 *
98 * @param file The file in which the assertion triggered.
99 * @param function The function (@c __FUNCTION__) in which the assertion triggered.
100 * @param line The line number of the assert() statement.
101 * @param exp The expression that failed (as a string).
102 */
103void _mondo_assert_fail(const char *file,
104 const char *function, int line, const char *exp)
105{
106 static int ignoring_assertions = 0;
107 bool is_valid = TRUE;
108
109 log_it("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line,
110 function);
111 if (ignoring_assertions) {
112 log_it("Well, the user doesn't care...");
113 return;
114 }
115 if (!g_text_mode)
116 newtSuspend();
117 printf("ASSERTION FAILED: `%s'\n", exp);
118 printf("\tat %s:%d in %s\n\n", file, line, function);
119 printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
120 do {
121 is_valid = TRUE;
122 switch (toupper(getchar())) {
123 case 'A': // ignore (A)ll
124 ignoring_assertions = 1;
125 break;
126 case 'B': // a(B)ort
127 signal(SIGABRT, SIG_DFL); /* prevent SIGABRT handler from running */
128 raise(SIGABRT);
129 break; /* "can't get here" */
130 case 'D': // (D)ebug, aka asm("int 3")
131#ifdef __IA32__
132 __asm__ __volatile__("int $3"); // break to debugger
133#endif
134 break;
135 case 'E': // (E)xit
136 fatal_error("Failed assertion -- see above for details");
137 break; /* "can't get here" */
138 case 'I': // (I)gnore
139 break;
140 /* These next two work as follows:
141 the `default' catches the user's invalid choice and says so;
142 the '\n' catches the newline on the end and prints the prompt again.
143 */
144 case '\n':
145 printf
146 ("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
147 break;
148 default:
149 is_valid = FALSE;
150 printf("Invalid choice.\n");
151 break;
152 }
153 } while (!is_valid);
154
155 if (ignoring_assertions) {
156 log_it("Ignoring ALL assertions from now on.");
157 } else {
158 log_it("Ignoring assertion: %s", exp);
159 }
160
161 getchar(); // skip \n
162
163 if (!g_text_mode)
164 newtResume();
165}
166
167/**
168 * Clean's up users' KDE desktops.
169 * @bug Details about this function are unknown.
170 */
171void clean_up_KDE_desktop_if_necessary(void)
172{
173 char *tmp = NULL;
174
175 mr_asprintf(tmp, "for i in `find /root /home -maxdepth 2 -type d -name Desktop -maxdepth 2`; do file=$i/.directory; if [ -f \"$file\" ] ; then mv -f $file $file.old ; awk '{if (index($0, \"rootimagesmindi\")) { while (length($0)>2) { getline;} ; } else { print $0;};}' $file.old > $file ; fi ; done");
176 run_program_and_log_output(tmp, 5);
177 mr_free(tmp);
178}
179
180
181/**
182 * Locate mondoarchive's home directory. Searches in /usr/local/mondo, /usr/share/mondo,
183 * /usr/local/share/mondo, /opt, or if all else fails, search /usr.
184 *
185 * @param home_sz String to store the home directory ("" if it could not be found).
186 * @return 0 for success, nonzero for failure.
187 */
188int find_and_store_mondoarchives_home(char *home_sz)
189{
190 assert(home_sz != NULL);
191 strcpy(home_sz, MONDO_SHARE);
192 return (0);
193}
194
195
196char *get_architecture(void) {
197#ifdef __IA32__
198# ifdef __X86_64__
199 return ("x86_64");
200# else
201 return ("i386");
202# endif
203#endif
204#ifdef __IA64__
205 return ("ia64");
206#endif
207 return ("unknown");
208}
209
210
211char *get_uname_m(void) {
212
213 struct utsname utsn;
214 char *tmp = NULL;
215
216 uname(&utsn);
217 mr_asprintf(tmp, "%s", utsn.machine);
218 return (tmp);
219}
220
221
222
223double get_kernel_version(void)
224{
225 char *p = NULL;
226 char *tmp = NULL;
227 double d;
228#ifdef __FreeBSD__
229 // JOSH - FIXME :)
230 d = 5.2; // :-)
231#else
232 mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("uname -r"));
233 p = strchr(tmp, '.');
234 if (p) {
235 p = strchr(++p, '.');
236 if (p) {
237 while (*p) {
238 *p = *(p + 1);
239 p++;
240 }
241 }
242 }
243 d = atof(tmp);
244 mr_free(tmp);
245#endif
246 log_msg(1, "g_kernel_version = %f", d);
247 return (d);
248}
249
250
251/**
252 * Get the current time.
253 * @return number of seconds since the epoch.
254 */
255long get_time()
256{
257 return (long) time((void *) 0);
258}
259
260
261/**
262 * Initialize a RAID volume structure, setting fields to zero. The
263 * actual hard drive is unaffected.
264 *
265 * @param raidrec The RAID volume structure to initialize.
266 * @note This function is system dependent.
267 */
268#ifdef __FreeBSD__
269void initialize_raidrec(struct vinum_volume *raidrec)
270{
271 int i, j;
272 raidrec->volname[0] = '\0';
273 raidrec->plexes = 0;
274 for (i = 0; i < 9; ++i) {
275 raidrec->plex[i].raidlevel = -1;
276 raidrec->plex[i].stripesize = 0;
277 raidrec->plex[i].subdisks = 0;
278 for (j = 0; j < 9; ++j) {
279 strcpy(raidrec->plex[i].sd[j].which_device, "");
280 }
281 }
282}
283#else
284void initialize_raidrec(struct raid_device_record *raidrec)
285{
286 assert(raidrec != NULL);
287 raidrec->raid_device[0] = '\0';
288 raidrec->raid_level = -9;
289 raidrec->persistent_superblock = 1;
290 raidrec->chunk_size = 64;
291 raidrec->parity = -1;
292 raidrec->data_disks.entries = 0;
293 raidrec->spare_disks.entries = 0;
294 raidrec->parity_disks.entries = 0;
295 raidrec->failed_disks.entries = 0;
296 raidrec->additional_vars.entries = 0;
297}
298#endif
299
300
301
302
303/**
304 * Insert modules that Mondo requires.
305 * Currently inserts @c msdos, @c vfat, and @c loop for Linux;
306 * @c msdosfs and @c ext2fs for FreeBSD.
307 */
308void insmod_crucial_modules(void)
309{
310#ifdef __FreeBSD__
311 paranoid_system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
312 paranoid_system("kldstat | grep ext2fs || kldload ext2fs 2> /dev/null");
313#else
314 paranoid_system("modprobe -a msdos vfat loop &> /dev/null");
315#endif
316}
317
318/**
319 * Finish configuring the backup information structure. Call this function
320 * to set the parameters that depend on those that can be given on the command
321 * line.
322 *
323 * @param bkpinfo The backup information structure. Fields modified/used:
324 * - Used: @c bkpinfo->backup_data
325 * - Used: @c bkpinfo->backup_media_type
326 * - Used: @c bkpinfo->cdrw_speed
327 * - Used: @c bkpinfo->compression_level
328 * - Used: @c bkpinfo->include_paths
329 * - Used: @c bkpinfo->prefix
330 * - Used: @c bkpinfo->isodir
331 * - Used: @c bkpinfo->manual_cd_tray
332 * - Used: @c bkpinfo->make_cd_use_lilo
333 * - Used: @c bkpinfo->media_device
334 * - Used: @c bkpinfo->netfs_mount
335 * - Used: @c bkpinfo->nonbootable_backup
336 * - Used: @c bkpinfo->scratchdir
337 * - Used: @c bkpinfo->tmpdir
338 * - Used: @c bkpinfo->use_lzo
339 * - Modified: @c bkpinfo->call_before_iso
340 * - Modified: @c bkpinfo->call_make_iso
341 * - Modified: @c bkpinfo->optimal_set_size
342 * - Modified: @c bkpinfo->zip_exe
343 * - Modified: @c bkpinfo->zip_suffix
344 *
345 * @return number of errors, or 0 for success.
346 * @note Also creates directories that are specified in the @c bkpinfo structure but
347 * do not exist.
348 */
349int post_param_configuration()
350{
351 char *extra_cdrom_params = NULL;
352 char *mondo_mkisofs_sz = NULL;
353 char *command = NULL;
354 char *isofs_cmd = NULL;
355 int retval = 0;
356 char *cdr_exe = NULL;
357 char *tmp = NULL;
358 char *call_before_iso_user = NULL;
359 char *iso_dev = NULL;
360 char *iso_mnt = NULL;
361 char *iso_tmp = NULL;
362 char *iso_dir = NULL;
363
364 assert(bkpinfo != NULL);
365
366 bkpinfo->optimal_set_size = (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 16 : 16) * 1024L;
367
368 log_msg(1, "Post-param");
369 if (bkpinfo->backup_media_type == tape) {
370 if (whine_if_not_found("mt") == 1) {
371 fatal_error("Please install the mt command");
372 }
373 log_msg(1, "Tape");
374 if (bkpinfo->media_device == NULL) {
375 return(1);
376 }
377 mr_asprintf(tmp, "mt -f %s status", bkpinfo->media_device);
378 log_msg(1, "tmp = '%s'", tmp);
379 if (run_program_and_log_output(tmp, 3)) {
380 mr_free(tmp);
381 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.");
382 }
383 mr_free(tmp);
384 }
385 if (bkpinfo->backup_media_type == iso)
386 make_hole_for_dir(bkpinfo->isodir);
387
388 run_program_and_log_output("uname -a", 5);
389 run_program_and_log_output("cat /etc/*-release", 5);
390 run_program_and_log_output("cat /etc/*issue*", 5);
391#ifdef __FreeBSD__
392#else
393 run_program_and_log_output("cat /proc/cpuinfo", 5);
394 /*
395 run_program_and_log_output("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc", 5);
396 */
397#endif
398
399 if (bkpinfo->use_lzo) {
400 strcpy(bkpinfo->zip_exe, "lzop");
401 strcpy(bkpinfo->zip_suffix, "lzo");
402 } else if (bkpinfo->use_gzip) {
403 strcpy(bkpinfo->zip_exe, "gzip");
404 strcpy(bkpinfo->zip_suffix, "gz");
405 } else if (bkpinfo->use_lzma) {
406 strcpy(bkpinfo->zip_exe, "lzma");
407 strcpy(bkpinfo->zip_suffix, "lzma");
408 } else if (bkpinfo->compression_level != 0) {
409 strcpy(bkpinfo->zip_exe, "bzip2");
410 strcpy(bkpinfo->zip_suffix, "bz2");
411 } else {
412 bkpinfo->zip_exe[0] = bkpinfo->zip_suffix[0] = '\0';
413 }
414
415// DVD
416
417 if (bkpinfo->backup_media_type == dvd) {
418 if (find_home_of_exe("growisofs")) {
419 mr_asprintf(cdr_exe, "growisofs");
420 } // unlikely to be used
421 else {
422 fatal_error("Please install growisofs.");
423 }
424 if (bkpinfo->nonbootable_backup) {
425 mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_NONBOOT);
426 } else if
427#ifdef __FreeBSD__
428 (TRUE)
429#else
430 (bkpinfo->make_cd_use_lilo)
431#endif
432#ifdef __IA64__
433 {
434 mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_ELILO);
435 }
436#else
437 {
438 mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
439 }
440#endif
441 else {
442 mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
443 }
444 if (bkpinfo->manual_cd_tray) {
445 fatal_error("Manual CD tray + DVD not supported yet.");
446 // -m isn't supported by growisofs, BTW...
447 } else {
448 sprintf(bkpinfo->call_make_iso, "%s %s -Z %s . 2>> _ERR_", mondo_mkisofs_sz, "", bkpinfo->media_device);
449 }
450 mr_free(mondo_mkisofs_sz);
451 if (getenv ("SUDO_COMMAND")) {
452 mr_asprintf(command, "strings `which growisofs` | grep -c SUDO_COMMAND");
453 if (!strcmp(call_program_and_get_last_line_of_output(command), "1")) {
454 mr_free(command);
455 popup_and_OK("Fatal Error: Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
456 fatal_error("Can't write DVDs as sudo because growisofs doesn't support this - see the growisofs manpage for details.");
457 }
458 mr_free(command);
459 }
460 log_msg(2, "call_make_iso (DVD res) is ... %s", bkpinfo->call_make_iso);
461 } // end of DVD code
462
463// CD-R or CD-RW
464 if (bkpinfo->backup_media_type == cdrw
465 || bkpinfo->backup_media_type == cdr) {
466 if (!bkpinfo->manual_cd_tray) {
467 mr_asprintf(extra_cdrom_params, "-waiti ");
468 }
469 if (bkpinfo->backup_media_type == cdrw) {
470 mr_asprintf(extra_cdrom_params, "blank=fast ");
471 }
472 if (extra_cdrom_params == NULL) {
473 // If not initialized earlier, do it now
474 mr_asprintf(extra_cdrom_params, " ");
475 }
476 if (find_home_of_exe("cdrecord")) {
477 mr_asprintf(cdr_exe, "cdrecord");
478 } else if (find_home_of_exe("dvdrecord")) {
479 mr_asprintf(cdr_exe, "dvdrecord");
480 } else {
481 fatal_error("Please install either cdrecord or dvdrecord.");
482 }
483 if (find_home_of_exe("xorriso")) {
484 mr_asprintf(isofs_cmd, "%s", MONDO_XORRISO_CMD);
485 else if (find_home_of_exe("genisoimage")) {
486 mr_asprintf(isofs_cmd, "%s", MONDO_GENISOIMAGE_CMD);
487 } else {
488 mr_asprintf(isofs_cmd, "%s", MONDO_MKISOFS_CMD);
489 }
490 if (bkpinfo->nonbootable_backup) {
491 mr_asprintf(mondo_mkisofs_sz, "%s%s", isofs_cmd, MONDO_MKISOFS);
492 } else if
493#ifdef __FreeBSD__
494 (TRUE)
495#else
496 (bkpinfo->make_cd_use_lilo)
497#endif
498#ifdef __IA64__
499 {
500 mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_ELILO);
501 }
502#else
503 {
504 mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_LILO);
505 }
506#endif
507 else
508 {
509 mr_asprintf(mondo_mkisofs_sz, "%s%s -V _CD#_", isofs_cmd, MONDO_MKISOFS_REGULAR_SYSLINUX);
510 }
511 mr_free(isofs_cmd);
512
513 if (bkpinfo->manual_cd_tray) {
514 if (bkpinfo->call_before_iso[0] == '\0') {
515 sprintf(bkpinfo->call_before_iso, "%s -o %s/"MONDO_TMPISOS" . 2>> _ERR_", mondo_mkisofs_sz, bkpinfo->tmpdir);
516 } else {
517 mr_asprintf(call_before_iso_user, "%s", bkpinfo->call_before_iso);
518 sprintf(bkpinfo->call_before_iso, "( %s -o %s/"MONDO_TMPISOS" . 2>> _ERR_ ; %s )", mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
519 mr_free(call_before_iso_user);
520 }
521 log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
522 sprintf(bkpinfo->call_make_iso, "%s %s -v %s fs=4m dev=%s speed=%d %s/"MONDO_TMPISOS, cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject", extra_cdrom_params, bkpinfo->media_device, bkpinfo->cdrw_speed, bkpinfo->tmpdir);
523 } else {
524 sprintf(bkpinfo->call_make_iso, "%s . 2>> _ERR_ | %s %s %s fs=4m dev=%s speed=%d -", mondo_mkisofs_sz, cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject", extra_cdrom_params, bkpinfo->media_device, bkpinfo->cdrw_speed);
525 }
526 mr_free(cdr_exe);
527 mr_free(mondo_mkisofs_sz);
528 mr_free(extra_cdrom_params);
529 } // end of CD code
530
531 if (bkpinfo->backup_media_type == iso) {
532
533/* Break up isodir into iso_mnt and iso_dir
534 * These will be used along with iso-dev at restore time
535 * to locate the ISOs where ever they're mounted
536 */
537
538 log_it("isodir = %s", bkpinfo->isodir);
539 mr_asprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1", bkpinfo->isodir);
540 log_it("command = %s", command);
541 mr_asprintf(iso_dev, "%s", call_program_and_get_last_line_of_output(command));
542 log_it("res of it = %s", iso_dev);
543 mr_asprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
544 write_one_liner_data_file(tmp, iso_dev);
545 mr_free(tmp);
546 mr_free(command);
547
548 mr_asprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3", iso_dev);
549 mr_free(iso_dev);
550
551 log_it("command = %s", command);
552 mr_asprintf(iso_mnt, "%s", call_program_and_get_last_line_of_output(command));
553 log_it("res of it = %s", iso_mnt);
554 mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
555 write_one_liner_data_file(tmp, iso_mnt);
556 mr_free(tmp);
557 mr_free(command);
558
559 log_it("iso_mnt: %s, %d", iso_mnt, strlen(iso_mnt));
560 mr_asprintf(iso_tmp, "%s", bkpinfo->isodir);
561 if (strlen(iso_tmp) < strlen(iso_mnt)) {
562 mr_asprintf(iso_dir, "%s", "");
563 } else {
564 // If iso_mnt is only / then iso_dir is the full dir
565 // (the formula bellow doesn't work in this case)
566 if (strcmp(iso_mnt, "/") == 0) {
567 mr_asprintf(iso_dir, "%s", iso_tmp);
568 // else it's a part of iso_tmp
569 } else {
570 mr_asprintf(iso_dir, "%s", iso_tmp + strlen(iso_mnt));
571 }
572 }
573 mr_free(iso_mnt);
574 mr_free(iso_tmp);
575
576 mr_asprintf(tmp, "%s/ISO-DIR", bkpinfo->tmpdir);
577 write_one_liner_data_file(tmp, iso_dir);
578 mr_free(tmp);
579
580 log_it("iso-dir: %s", iso_dir);
581 mr_free(iso_dir);
582
583 mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
584 write_one_liner_data_file(tmp, bkpinfo->prefix);
585 mr_free(tmp);
586
587 log_it("iso-prefix: %s", bkpinfo->prefix);
588
589/* End patch */
590 } // end of iso code
591
592 if (bkpinfo->backup_media_type == netfs) {
593 mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
594 write_one_liner_data_file(tmp, bkpinfo->prefix);
595 mr_free(tmp);
596
597 mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
598 write_one_liner_data_file(tmp, bkpinfo->isodir);
599 mr_free(tmp);
600
601 mr_asprintf(tmp, "%s/ISO-DIR", bkpinfo->tmpdir);
602 write_one_liner_data_file(tmp, bkpinfo->netfs_remote_dir);
603 mr_free(tmp);
604
605 if (bkpinfo->netfs_mount) {
606 mr_asprintf(tmp, "%s/NETFS-SERVER-MOUNT", bkpinfo->tmpdir);
607 write_one_liner_data_file(tmp, bkpinfo->netfs_mount);
608 mr_free(tmp);
609 } else {
610 log_it("netfs_mount is NULL");
611 retval++;
612 }
613 }
614
615 log_it("Finished processing incoming params");
616 if (retval) {
617 fprintf(stderr, "Type 'man mondoarchive' for help.\n");
618 }
619 if (bkpinfo->include_paths == NULL) {
620 mr_asprintf(bkpinfo->include_paths, "/");
621 }
622 g_backup_media_type = bkpinfo->backup_media_type;
623 return (retval);
624}
625
626
627
628/**
629 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
630 * Seeds the random-number generator, loads important modules, checks the sanity
631 * of the user's Linux distribution, and deletes logfile.
632 * @param bkpinfo The backup information structure. Will be initialized.
633 * @return number of errors (0 for success)
634 */
635int pre_param_configuration()
636{
637 int res = 0;
638 char *tmp = NULL;
639
640 make_hole_for_dir(MNT_CDROM);
641 assert(bkpinfo != NULL);
642 srandom((unsigned long) (time(NULL)));
643 insmod_crucial_modules();
644 if (bkpinfo->disaster_recovery) {
645 if (!does_nonMS_partition_exist()) {
646 fatal_error("I am in disaster recovery mode\nPlease don't run mondoarchive.");
647 }
648 }
649
650 mr_asprintf(tmp,"rm -Rf %s/changed.files*",MONDO_CACHE);
651 run_program_and_log_output(tmp, FALSE);
652 paranoid_free(tmp);
653 if (find_and_store_mondoarchives_home(g_mondo_home)) {
654 fprintf(stderr, "Cannot find Mondo's homedir. I think you have >1 'mondo' directory on your hard disk. Please delete the superfluous 'mondo' directories and try again\n");
655 res++;
656 return (res);
657 }
658 res += some_basic_system_sanity_checks();
659 if (res) {
660 log_it("Your distribution did not pass Mondo's sanity test.");
661 }
662 g_current_media_number = 1;
663 bkpinfo->postnuke_tarball[0] = '\0';
664 return (res);
665}
666
667/* From busybox under GPLv2 */
668#ifndef HAVE_MKDTEMP
669/* This is now actually part of POSIX.1, but was only added in 2008 */
670char* mkdtemp(char *template)
671{
672 if (mktemp(template) == NULL || mkdir(template, 0700) != 0)
673 return NULL;
674 return template;
675}
676#endif
677
678void setup_tmpdir(char *path) {
679
680 char *tmp = NULL;
681 char *p = NULL;
682
683 if (bkpinfo->tmpdir[0] != '\0') {
684 /* purging a potential old tmpdir */
685 if (chdir("/tmp")) {
686 // FIXME
687 }
688 if (strstr(bkpinfo->tmpdir,"mondo.tmp.") != NULL) {
689 log_it("Purging old tmpdir %s", bkpinfo->tmpdir);
690 mr_asprintf(tmp,"rm -Rf %s",bkpinfo->tmpdir);
691 } else {
692 log_it("Purging old tmpdir %s/mondo.tmp.*", bkpinfo->tmpdir);
693 mr_asprintf(tmp,"rm -Rf %s/mondo.tmp.*",bkpinfo->tmpdir);
694 }
695 paranoid_system(tmp);
696 mr_free(tmp);
697 }
698
699 /* Always take in account arg first, then env, then default */
700 if (path != NULL) {
701 mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", path);
702 } else if (getenv("TMPDIR")) {
703 mr_system("mkdir -p %s",getenv("TMPDIR"));
704 mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("TMPDIR"));
705 } else if (getenv("MRTMP")) {
706 mr_system("mkdir -p %s",getenv("MRTMP"));
707 mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("MRTMP"));
708 } else {
709 mr_asprintf(tmp, "/tmp/mondo.tmp.XXXXXX");
710 }
711 p = mkdtemp(tmp);
712 if (p == NULL) {
713 printf("Failed to create global tmp directory %s for Mondo.",tmp);
714 mr_free(tmp);
715 finish(-1);
716 }
717 strcpy(bkpinfo->tmpdir,p);
718 mr_free(tmp);
719
720 log_it("bkpinfo->tmpdir is being set to %s", bkpinfo->tmpdir);
721
722 mr_asprintf(tmp, "mkdir -p %s/tmpfs", bkpinfo->tmpdir);
723 paranoid_system(tmp);
724 mr_free(tmp);
725}
726
727void setup_scratchdir(char *path) {
728
729 char *tmp = NULL;
730 char *p = NULL;
731
732 if (bkpinfo->scratchdir != NULL) {
733 /* purging a potential old scratchdir */
734 if (chdir("/tmp")) {
735 // FIXME
736 }
737 if (strstr(bkpinfo->scratchdir,"mondo.scratch.") != NULL) {
738 log_it("Purging old scratchdir %s", bkpinfo->scratchdir);
739 mr_asprintf(tmp,"rm -Rf %s",bkpinfo->scratchdir);
740 } else {
741 log_it("Purging old scratchdir %s/mondo.scratch.*", bkpinfo->scratchdir);
742 mr_asprintf(tmp,"rm -Rf %s/mondo.scratch.*",bkpinfo->scratchdir);
743 }
744 paranoid_system(tmp);
745 mr_free(tmp);
746 }
747
748 /* Always take in account arg first, then env, then default */
749 if (path != NULL) {
750 mr_system("mkdir -p %s",path);
751 mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", path);
752 } else if (getenv("MRSCRATCH")) {
753 mr_system("mkdir -p %s",getenv("MRSCRATCH"));
754 mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", getenv("MRSCRATCH"));
755 } else {
756 mr_asprintf(tmp, "/tmp/mondo.scratch.XXXXXX");
757 }
758 p = mkdtemp(tmp);
759 if (p == NULL) {
760 log_it("Failed to create global scratch directory %s for Mondo.",tmp);
761 finish(-1);
762 }
763 strcpy(bkpinfo->scratchdir,p);
764 log_it("bkpinfo->scratchdir is being set to %s", bkpinfo->scratchdir);
765 paranoid_free(tmp);
766
767 mr_asprintf(tmp, "mkdir -p %s", bkpinfo->scratchdir);
768 paranoid_system(tmp);
769 mr_free(tmp);
770}
771
772
773/**
774 * Reset all fields of the backup information structure to a sensible default.
775 * @param bkpinfo The @c bkpinfo to reset.
776 */
777void reset_bkpinfo()
778{
779 assert(bkpinfo != NULL);
780 memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
781
782 bkpinfo->media_device[0] = '\0';
783 bkpinfo->media_size = -1;
784 bkpinfo->boot_loader = '\0';
785 bkpinfo->boot_device = NULL;
786 bkpinfo->zip_exe[0] = '\0';
787 bkpinfo->zip_suffix[0] = '\0';
788 bkpinfo->image_devs[0] = '\0';
789 bkpinfo->compression_level = 3;
790 bkpinfo->use_lzo = FALSE;
791 bkpinfo->use_gzip = FALSE;
792 bkpinfo->use_lzma = FALSE;
793 bkpinfo->verify_data = FALSE;
794 bkpinfo->backup_data = FALSE;
795 bkpinfo->restore_data = FALSE;
796 bkpinfo->use_star = FALSE;
797 bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
798
799 /* We need tmpdir as early as possible for further function calls */
800 bkpinfo->tmpdir[0] = '\0'; // Really setup after
801 bkpinfo->scratchdir[0] = '\0'; // Really setup after
802 setup_tmpdir(NULL);
803 setup_scratchdir(NULL);
804
805 bkpinfo->disaster_recovery = am_I_in_disaster_recovery_mode();
806 if (bkpinfo->disaster_recovery) {
807 strcpy(bkpinfo->isodir, "/");
808 } else {
809 strcpy(bkpinfo->isodir, MONDO_CACHE);
810 }
811 strcpy(bkpinfo->prefix, STD_PREFIX);
812 bkpinfo->optimal_set_size = 0L;
813 bkpinfo->backup_media_type = none;
814 bkpinfo->make_filelist = TRUE; // unless -J supplied to mondoarchive
815 bkpinfo->exclude_paths = NULL;
816 bkpinfo->include_paths = NULL;
817 bkpinfo->exclude_devs = NULL;
818 bkpinfo->restore_path[0] = '\0';
819 bkpinfo->call_before_iso[0] = '\0';
820 bkpinfo->call_make_iso[0] = '\0';
821 bkpinfo->call_burn_iso[0] = '\0';
822 bkpinfo->call_after_iso[0] = '\0';
823 bkpinfo->kernel_path[0] = '\0';
824 bkpinfo->netfs_mount = NULL;
825 bkpinfo->netfs_proto = NULL;
826 bkpinfo->netfs_user = NULL;
827 bkpinfo->netfs_remote_dir = NULL;
828 bkpinfo->postnuke_tarball[0] = '\0';
829 bkpinfo->subdir = NULL;
830 bkpinfo->wipe_media_first = FALSE;
831 bkpinfo->differential = 0;
832 bkpinfo->please_dont_eject = FALSE;
833 bkpinfo->cdrw_speed = 0;
834 bkpinfo->manual_cd_tray = FALSE;
835 bkpinfo->nonbootable_backup = FALSE;
836 bkpinfo->make_cd_use_lilo = FALSE;
837 bkpinfo->use_obdr = FALSE;
838 bkpinfo->restore_mode = interactive;
839 bkpinfo->boot_type = BIOS;
840}
841
842
843/**
844 * Get the remaining free space (in MB) on @p partition.
845 * @param partition The partition to check free space on (either a device or a mountpoint).
846 * @return The free space on @p partition, in MB.
847 */
848long free_space_on_given_partition(char *partition)
849{
850 char *out_sz = NULL;
851 char *command = NULL;
852 long res;
853
854 assert_string_is_neither_NULL_nor_zerolength(partition);
855
856 mr_asprintf(command, "df -m -P %s 1> /dev/null 2> /dev/null", partition);
857 if (system(command)) {
858 mr_free(command);
859 return (-1);
860 } // partition does not exist
861 mr_free(command);
862
863 mr_asprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4", partition);
864 mr_asprintf(out_sz, "%s", call_program_and_get_last_line_of_output(command));
865 mr_free(command);
866
867 if (strlen(out_sz) == 0) {
868 mr_free(out_sz);
869 return (-1);
870 } // error within df, probably
871 res = atol(out_sz);
872 mr_free(out_sz);
873 return (res);
874}
875
876
877
878/**
879 * Check the user's system for sanity. Checks performed:
880 * - make sure user has enough RAM (32mb required, 64mb recommended)
881 * - make sure user has enough free space in @c /
882 * - check kernel for ramdisk support
883 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
884 * - make sure CD-ROM is unmounted
885 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
886 *
887 * @return number of problems with the user's setup (0 for success)
888 */
889int some_basic_system_sanity_checks()
890{
891
892 /*@ buffers ************ */
893 char *tmp = NULL;
894
895 /*@ int's *************** */
896 int retval = 0;
897
898 mvaddstr_and_log_it(g_currentY, 0, "Checking sanity of your Linux distribution");
899#ifndef __FreeBSD__
900 if (system("which mkfs.vfat 2> /dev/null 1> /dev/null")
901 && !system("which mkfs.msdos 2> /dev/null 1> /dev/null")) {
902 log_it("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
903 run_program_and_log_output("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
904 }
905 mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2"));
906 if (atol(tmp) < 35000) {
907 retval++;
908 log_to_screen("You must have at least 32MB of RAM to use Mondo.");
909 }
910 if (atol(tmp) < 66000) {
911 log_to_screen("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
912 }
913 mr_free(tmp);
914#endif
915
916 if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
917 retval++;
918 log_to_screen
919 ("Unable to find " MKE2FS_OR_NEWFS " in system path.");
920 fatal_error
921 ("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. :)");
922 }
923#ifndef __FreeBSD__
924 if (run_program_and_log_output
925 ("grep ramdisk /proc/devices", FALSE)) {
926 /* Some SuSE have ramdisk as modules, so insert it first, then test again */
927 run_program_and_log_output("modprobe brd 2> /dev/null > /dev/null",FALSE);
928 if (run_program_and_log_output("grep ramdisk /proc/devices", FALSE)) {
929 if (!ask_me_yes_or_no("Your kernel has no ramdisk support. That's mind-numbingly stupid but I'll allow it if you're planning to use another kernel. Are you?")) {
930 // retval++;
931 log_to_screen("It looks as if your kernel lacks ramdisk and initrd support.");
932 log_to_screen("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
933 }
934 }
935 }
936#endif
937 retval += whine_if_not_found(MKE2FS_OR_NEWFS);
938 if (system("which xorriso > /dev/null 2> /dev/null")) {
939 if (system("which genisoimage > /dev/null 2> /dev/null")) {
940 retval += whine_if_not_found("mkisofs");
941 }
942 }
943 if (system("which wodim > /dev/null 2> /dev/null")) {
944 retval += whine_if_not_found("cdrecord");
945 }
946 retval += whine_if_not_found("bzip2");
947 retval += whine_if_not_found("gzip");
948 retval += whine_if_not_found("awk");
949 retval += whine_if_not_found("md5sum");
950 retval += whine_if_not_found("strings");
951 retval += whine_if_not_found("mindi");
952 retval += whine_if_not_found("buffer");
953
954 // abort if Windows partition but no ms-sys and parted
955 if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -vE \"/dev/fd|nexdisk\"", 0)) {
956 if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -Ew efi", 0)) {
957 log_to_screen("I think you have a EFI/UEFI partition.");
958 } else {
959 log_to_screen("I think you have a Windows 9x partition.");
960 }
961 retval += whine_if_not_found("parted");
962 }
963
964 if (!find_home_of_exe("cmp")) {
965 whine_if_not_found("cmp");
966 }
967 run_program_and_log_output("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
968 mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output("mount | grep -E \"cdr(om|w)\""));
969 if (strcmp("", tmp)) {
970 if (strstr(tmp, "autofs")) {
971 log_to_screen("Your CD-ROM is mounted via autofs. I therefore cannot tell");
972 log_to_screen("if a CD actually is inserted. If a CD is inserted, please");
973 log_to_screen("eject it. Thank you.");
974 log_it("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
975 } else
976 if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
977 retval++;
978 mr_free(tmp);
979 fatal_error("Your CD-ROM drive is mounted. Please unmount it.");
980 }
981 }
982 mr_free(tmp);
983
984 run_program_and_log_output("cat /etc/fstab", 5);
985#ifdef __FreeBSD__
986 run_program_and_log_output("vinum printconfig", 5);
987#else
988 run_program_and_log_output("cat /etc/raidtab", 5);
989#endif
990
991 if (run_program_and_log_output("mindi -V", 1)) {
992 log_to_screen("Could not ascertain mindi's version number.");
993 log_to_screen("You have not installed Mondo and/or Mindi properly.");
994 log_to_screen("Please uninstall and reinstall them both.");
995 fatal_error("Please reinstall Mondo and Mindi.");
996 }
997 mr_asprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test", bkpinfo->tmpdir);
998 if (run_program_and_log_output(tmp, 5)) {
999 log_to_screen("%s failed for some reason.", tmp);
1000 mr_free(tmp);
1001 log_to_screen("Please run that command by hand and examine "MINDI_LOGFILE);
1002 log_to_screen("for more information. Perhaps your /etc/fstab file is insane.");
1003 log_to_screen("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
1004 retval++;
1005 }
1006 mr_free(tmp);
1007
1008 if (!run_program_and_log_output("mr-parted2fdisk -l 2>/dev/null | grep -i raid", 1) && !does_file_exist("/etc/raidtab")) {
1009 log_to_screen("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
1010 create_raidtab_from_mdstat(MDSTAT_FILE,"/etc/raidtab");
1011 }
1012
1013 if (retval) {
1014 mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
1015 } else {
1016 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
1017 }
1018 return (retval);
1019}
1020
1021/**
1022 * Retrieve the line containing @p label from the config file.
1023 * @param config_file The file to read from, usually @c /tmp/mondorestore.cfg.
1024 * @param label What to read from the file.
1025 * @param value Where to put it.
1026 * @return 0 for success, 1 for failure.
1027 */
1028int read_cfg_var(char *config_file, char *label, char *value)
1029{
1030 /*@ buffer ****************************************************** */
1031 char *command = NULL;
1032
1033 /*@ end vars *************************************************** */
1034
1035 assert_string_is_neither_NULL_nor_zerolength(config_file);
1036 assert_string_is_neither_NULL_nor_zerolength(label);
1037 if (!does_file_exist(config_file)) {
1038 log_to_screen("(read_cfg_var) Cannot find %s config file", config_file);
1039 value[0] = '\0';
1040 return (1);
1041 } else if ((value != NULL) && (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))) {
1042 log_msg(2, "FYI, I can't read new value for %s - already got %s", label, value);
1043 return (0);
1044 } else {
1045 mr_asprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5", label, config_file);
1046 strcpy(value, call_program_and_get_last_line_of_output(command));
1047 mr_free(command);
1048
1049 log_msg(4, "Configuration item %s is %s", label, value);
1050 if (strlen(value) == 0) {
1051 return (1);
1052 } else {
1053 return (0);
1054 }
1055 }
1056}
1057
1058
1059
1060/**
1061 * Remount @c supermount if it was unmounted earlier.
1062 */
1063void remount_supermounts_if_necessary()
1064{
1065 if (g_remount_cdrom_at_end) {
1066 run_program_and_log_output("mount " MNT_CDROM, FALSE);
1067 }
1068 if (g_remount_floppy_at_end) {
1069 run_program_and_log_output("mount " MNT_FLOPPY, FALSE);
1070 }
1071}
1072
1073/**
1074 * Unmount @c supermount if it's mounted.
1075 */
1076void unmount_supermounts_if_necessary()
1077{
1078 if (run_program_and_log_output
1079 ("mount | grep cdrom | grep super", FALSE) == 0) {
1080 g_remount_cdrom_at_end = TRUE;
1081 run_program_and_log_output("umount " MNT_CDROM, FALSE);
1082 }
1083 if (run_program_and_log_output
1084 ("mount | grep floppy | grep super", FALSE) == 0) {
1085 g_remount_floppy_at_end = TRUE;
1086 run_program_and_log_output("umount " MNT_FLOPPY, FALSE);
1087 }
1088}
1089
1090/**
1091 * Whether we had to stop autofs (if so, restart it at end).
1092 */
1093bool g_autofs_stopped = FALSE;
1094
1095/**
1096 * Path to the autofs initscript ("" if none exists).
1097 */
1098char g_autofs_exe[MAX_STR_LEN];
1099
1100/**
1101 * Autofs initscript in Xandros Linux distribution.
1102 */
1103#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1104
1105/**
1106 * Autofs initscript in most Linux distributions.
1107 */
1108#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1109
1110/**
1111 * If autofs is mounted, stop it (restart at end).
1112 */
1113void stop_autofs_if_necessary()
1114{
1115 char *tmp = NULL;
1116
1117 g_autofs_exe[0] = '\0';
1118 if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1119 strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1120 } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1121 strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1122 }
1123
1124 if (!g_autofs_exe[0]) {
1125 log_msg(3, "No autofs detected.");
1126 } else {
1127 log_msg(3, "%s --- autofs detected", g_autofs_exe);
1128 // FIXME -- only disable it if it's running --- sprintf(tmp, "%s status", autofs_exe);
1129 mr_asprintf(tmp, "%s stop", g_autofs_exe);
1130 if (run_program_and_log_output(tmp, 2)) {
1131 log_it("Failed to stop autofs - I assume it wasn't running");
1132 } else {
1133 g_autofs_stopped = TRUE;
1134 log_it("Stopped autofs OK");
1135 }
1136 mr_free(tmp);
1137 }
1138}
1139
1140/**
1141 * If autofs was stopped earlier, restart it.
1142 */
1143void restart_autofs_if_necessary()
1144{
1145 char *tmp = NULL;
1146
1147 if (!g_autofs_stopped || !g_autofs_exe[0]) {
1148 log_msg(3, "No autofs detected.");
1149 return;
1150 }
1151 mr_asprintf(tmp, "%s start", g_autofs_exe);
1152 if (run_program_and_log_output(tmp, 2)) {
1153 log_it("Failed to start autofs");
1154 } else {
1155 g_autofs_stopped = FALSE;
1156 log_it("Started autofs OK");
1157 }
1158 mr_free(tmp);
1159}
1160
1161
1162/**
1163 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1164 */
1165void mount_boot_if_necessary() {
1166 char *tmp = NULL;
1167 char *command = NULL;
1168
1169 log_msg(1, "Started sub");
1170 log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1171 g_boot_mountpt[0] = '\0';
1172 log_msg(4, "Done. Great. Seeting command to something");
1173 mr_asprintf(command, "%s", "grep -v \":\" /etc/fstab | grep -vE '^#.*$' | grep -E \"[ ]/boot[ ]\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1174 log_msg(4, "Cool. Command = '%s'", command);
1175 mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1176 mr_free(command);
1177
1178 log_msg(4, "tmp = '%s'", tmp);
1179 log_it("/boot is at %s according to /etc/fstab", tmp);
1180 mr_asprintf(command, "mount | grep -Ew '/boot'");
1181 mr_free(tmp);
1182
1183 mr_asprintf(tmp, "%s", call_program_and_get_last_line_of_output(command));
1184 mr_free(command);
1185
1186 if (!strcmp(tmp,"")) {
1187 if ((strstr(tmp, "LABEL=") != NULL) || (strstr(tmp,"UUID=") != NULL)) {
1188 if (!run_program_and_log_output("mount /boot", 5)) {
1189 strcpy(g_boot_mountpt, "/boot");
1190 log_msg(1, "Mounted /boot");
1191 } else {
1192 log_it("...ignored cos it's a label or uuid :-)");
1193 }
1194 } else {
1195 mr_asprintf(command, "mount | grep -E '^%s'", tmp);
1196 log_msg(3, "command = %s", command);
1197 if (run_program_and_log_output(command, 5)) {
1198 strcpy(g_boot_mountpt, tmp);
1199 mr_free(tmp);
1200 log_it("%s (your /boot partition) is not mounted. I'll mount it before backing up", g_boot_mountpt);
1201
1202 mr_asprintf(tmp, "mount %s", g_boot_mountpt);
1203 if (run_program_and_log_output(tmp, 5)) {
1204 g_boot_mountpt[0] = '\0';
1205 log_msg(1, "Plan B");
1206 if (!run_program_and_log_output("mount /boot", 5)) {
1207 strcpy(g_boot_mountpt, "/boot");
1208 log_msg(1, "Plan B worked");
1209 } else {
1210 log_msg(1,
1211 "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1212 }
1213 }
1214 }
1215 mr_free(command);
1216 }
1217 }
1218 mr_free(tmp);
1219 log_msg(1, "Ended sub");
1220}
1221
1222
1223/**
1224 * If we mounted /boot earlier, unmount it.
1225 */
1226void unmount_boot_if_necessary()
1227{
1228 char *tmp = NULL;
1229
1230 log_msg(3, "starting");
1231 if (g_boot_mountpt[0]) {
1232 mr_asprintf(tmp, "umount %s", g_boot_mountpt);
1233 if (run_program_and_log_output(tmp, 5)) {
1234 log_it("WARNING - unable to unmount /boot");
1235 }
1236 mr_free(tmp);
1237 }
1238 log_msg(3, "leaving");
1239}
1240
1241
1242
1243/**
1244 * Write a line to a configuration file. Writes a line of the form,
1245 * @c label @c value.
1246 * @param config_file The file to write to. Usually @c mondorestore.cfg.
1247 * @param label What to call this bit of data you're writing.
1248 * @param value The bit of data you're writing.
1249 * @return 0 for success, 1 for failure.
1250 */
1251int write_cfg_var(char *config_file, char *label, char *value)
1252{
1253 /*@ buffers ***************************************************** */
1254 char *command = NULL;
1255 char *tempfile = NULL;
1256
1257
1258 /*@ end vars *************************************************** */
1259 assert_string_is_neither_NULL_nor_zerolength(config_file);
1260 assert_string_is_neither_NULL_nor_zerolength(label);
1261 assert(value != NULL);
1262 if (!does_file_exist(config_file)) {
1263 log_to_screen("(write_cfg_file) Cannot find %s config file", config_file);
1264 return (1);
1265 }
1266 mr_asprintf(tempfile, "%s/mojo-jojo.blah", bkpinfo->tmpdir);
1267 if (does_file_exist(config_file)) {
1268 mr_asprintf(command, "grep -vE '^%s .*$' %s > %s", label, config_file, tempfile);
1269 paranoid_system(command);
1270 mr_free(command);
1271 }
1272 mr_asprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1273 paranoid_system(command);
1274 mr_free(command);
1275
1276 mr_asprintf(command, "mv -f %s %s", tempfile, config_file);
1277 paranoid_system(command);
1278 mr_free(command);
1279 unlink(tempfile);
1280 mr_free(tempfile);
1281 return (0);
1282}
1283
1284
1285/**
1286 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1287 * information to the logfile.
1288 */
1289void standard_log_debug_msg(int debug_level, const char *szFile, const char *szFunction, int nLine, const char *fmt, ...) {
1290
1291 va_list args;
1292 static int depth = 0;
1293 FILE *fout;
1294
1295 if (depth > 5) {
1296 depth--;
1297 return;
1298 }
1299 depth++;
1300
1301 if (debug_level <= g_loglevel) {
1302 if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1303 return;
1304 }
1305
1306 // add tabs to distinguish log levels
1307 if (debug_level > 0) {
1308 fprintf(fout, "DBG%d: ", debug_level);
1309 if (getpid() == g_main_pid)
1310 fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction, nLine);
1311 else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1312 fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction, nLine);
1313 else
1314 fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile, szFunction, nLine);
1315 } else {
1316 fprintf(fout, "INFO: ");
1317 }
1318 va_start(args, fmt);
1319 vfprintf(fout, fmt, args);
1320 va_end(args);
1321
1322 fprintf(fout, "\n");
1323 paranoid_fclose(fout);
1324 }
1325 depth--;
1326}
1327
1328/**
1329 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1330 */
1331void (*log_debug_msg) (int, const char *, const char *, int, const char *, ...) = standard_log_debug_msg;
1332
1333
1334/**
1335 * Allocate or free important globals, depending on @p mal.
1336 * @param mal If TRUE, malloc; if FALSE, free.
1337 */
1338void do_libmondo_global_strings_thing(int mal)
1339{
1340 if (mal) {
1341 malloc_string(g_boot_mountpt);
1342 malloc_string(g_mondo_home);
1343 malloc_string(g_serial_string);
1344 malloc_string(g_magicdev_command);
1345 } else {
1346 paranoid_free(g_boot_mountpt);
1347 paranoid_free(g_mondo_home);
1348 paranoid_free(g_magicdev_command);
1349
1350 mr_free(g_serial_string);
1351 }
1352}
1353
1354/**
1355 * Allocate important globals.
1356 * @see do_libmondo_global_strings_thing
1357 */
1358void malloc_libmondo_global_strings(void)
1359{
1360 do_libmondo_global_strings_thing(1);
1361}
1362
1363/**
1364 * Free important globals.
1365 * @see do_libmondo_global_strings_thing
1366 */
1367void free_libmondo_global_strings(void)
1368{
1369 do_libmondo_global_strings_thing(0);
1370}
1371
1372
1373
1374/**
1375 * Stop @c magicdev if it's running.
1376 * The command used to start it is saved in @p g_magicdev_command.
1377 */
1378void stop_magicdev_if_necessary()
1379{
1380 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"));
1381 if (g_magicdev_command[0]) {
1382 log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1383 paranoid_system("killall magicdev");
1384 }
1385}
1386
1387
1388/**
1389 * Restart magicdev if it was stopped.
1390 */
1391void restart_magicdev_if_necessary()
1392{
1393 char *tmp = NULL;
1394
1395 if (g_magicdev_command && g_magicdev_command[0]) {
1396 mr_asprintf(tmp, "%s &", g_magicdev_command);
1397 paranoid_system(tmp);
1398 mr_free(tmp);
1399 }
1400}
1401
1402/* @} - end of utilityGroup */
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