source: MondoRescue/branches/3.3/mondo/src/common/libmondo-tools.c@ 3888

Last change on this file since 3888 was 3888, checked in by Bruno Cornec, 2 months ago

Remove lilo bootable iso images feature obsolete - Change mondo/mindi interface as a consequence + nonbootable
  • Property svn:keywords set to Id
File size: 39.5 KB
Line 
1/*
2 $Id: libmondo-tools.c 3888 2024-03-10 19:16:15Z 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
16#include "libmondo-gui-EXT.h"
17#include "libmondo-files-EXT.h"
18#include "libmondo-fork-EXT.h"
19#include "libmondo-raid-EXT.h"
20#include "libmondo-devices-EXT.h"
21#include <sys/socket.h>
22#include <netdb.h>
23#include <stdlib.h>
24#include <netinet/in.h>
25#include <arpa/inet.h>
26#include <sys/utsname.h>
27
28/*@unused@*/
29//static char cvsid[] = "$Id: libmondo-tools.c 3888 2024-03-10 19:16:15Z bruno $";
30
31extern int g_tape_buffer_size_MB;
32extern bool g_text_mode;
33extern int g_currentY;
34extern int g_current_media_number;
35extern char *MONDO_LOGFILE;
36
37/* Reference to global bkpinfo */
38extern struct s_bkpinfo *bkpinfo;
39
40/**
41 * @addtogroup globalGroup
42 * @{
43 */
44bool g_remount_cdrom_at_end; ///< TRUE if we unmounted the CD-ROM and should remount it when done with the backup.
45bool g_cd_recovery = FALSE; ///< TRUE if we're making an "autonuke" backup.
46double g_kernel_version;
47
48/**
49 * The place where /boot is mounted.
50 */
51char *g_boot_mountpt = NULL;
52
53/**
54 * The location of Mondo's home directory.
55 */
56extern char *g_mondo_home;
57
58/**
59 * The location where tmpfs is mounted, or "" if it's not mounted.
60char *g_tmpfs_mountpt = NULL;
61 */
62char *g_magicdev_command = NULL;
63
64/**
65 * The default maximum level to log messages at or below.
66 */
67int g_loglevel = DEFAULT_DEBUG_LEVEL;
68
69/* @} - end of globalGroup */
70
71
72extern pid_t g_buffer_pid;
73extern pid_t g_main_pid;
74
75extern t_bkptype g_backup_media_type;
76
77/*-----------------------------------------------------------*/
78
79
80/**
81 * @addtogroup utilityGroup
82 * @{
83 */
84/**
85 * Assertion handler. Prints a friendly message to the user,
86 * offering to ignore all, dump core, break to debugger,
87 * exit, or ignore. Intended to be used with an assert() macro.
88 *
89 * @param file The file in which the assertion triggered.
90 * @param function The function (@c __FUNCTION__) in which the assertion triggered.
91 * @param line The line number of the assert() statement.
92 * @param exp The expression that failed (as a string).
93 */
94void _mondo_assert_fail(const char *file,
95 const char *function, int line, const char *exp)
96{
97 static int ignoring_assertions = 0;
98 bool is_valid = TRUE;
99
100 log_it("ASSERTION FAILED: `%s' at %s:%d in %s", exp, file, line, function);
101 if (ignoring_assertions) {
102 log_it("Well, the user doesn't care...");
103 return;
104 }
105 if (!g_text_mode)
106 newtSuspend();
107 printf("ASSERTION FAILED: `%s'\n", exp);
108 printf("\tat %s:%d in %s\n\n", file, line, function);
109 printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
110 do {
111 is_valid = TRUE;
112 switch (toupper(getchar())) {
113 case 'A': // ignore (A)ll
114 ignoring_assertions = 1;
115 break;
116 case 'B': // a(B)ort
117 signal(SIGABRT, SIG_DFL); /* prevent SIGABRT handler from running */
118 raise(SIGABRT);
119 break; /* "can't get here" */
120 case 'D': // (D)ebug, aka asm("int 3")
121#ifdef __IA32__
122 __asm__ __volatile__("int $3"); // break to debugger
123#endif
124 break;
125 case 'E': // (E)xit
126 fatal_error("Failed assertion -- see above for details");
127 break; /* "can't get here" */
128 case 'I': // (I)gnore
129 break;
130 /* These next two work as follows:
131 the `default' catches the user's invalid choice and says so;
132 the '\n' catches the newline on the end and prints the prompt again.
133 */
134 case '\n':
135 printf("(I)gnore, ignore (A)ll, (D)ebug, a(B)ort, or (E)xit? ");
136 break;
137 default:
138 is_valid = FALSE;
139 printf("Invalid choice.\n");
140 break;
141 }
142 } while (!is_valid);
143
144 if (ignoring_assertions) {
145 log_it("Ignoring ALL assertions from now on.");
146 } else {
147 log_it("Ignoring assertion: %s", exp);
148 }
149
150 getchar(); // skip \n
151
152 if (!g_text_mode)
153 newtResume();
154}
155
156/**
157 * Clean's up users' KDE desktops.
158 * @bug Details about this function are unknown.
159 */
160void clean_up_KDE_desktop_if_necessary(void)
161{
162 char *tmp = NULL;
163
164 mr_asprintf(tmp, "for i in `find /root /home -maxdepth 2 -type d -name Desktop -maxdepth 2`; do file=$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");
165 run_program_and_log_output(tmp, 5);
166 mr_free(tmp);
167}
168
169
170/**
171 * Locate mondoarchive's home directory. Searches in /usr/local/mondo, /usr/share/mondo,
172 * /usr/local/share/mondo, /opt, or if all else fails, search /usr.
173 *
174 * @param home_sz String to store the home directory ("" if it could not be found).
175 * @return 0 for success, nonzero for failure.
176 */
177int find_and_store_mondoarchives_home(char *home_sz)
178{
179 assert(home_sz != NULL);
180 strcpy(home_sz, MONDO_SHARE);
181 return (0);
182}
183
184
185char *get_architecture(void) {
186#ifdef __IA32__
187# ifdef __X86_64__
188 return ("x86_64");
189# else
190 return ("i386");
191# endif
192#endif
193 return ("unknown");
194}
195
196
197char *get_uname_m(void) {
198
199 struct utsname utsn;
200 char *tmp = NULL;
201
202 uname(&utsn);
203 mr_asprintf(tmp, "%s", utsn.machine);
204 return (tmp);
205}
206
207
208
209double get_kernel_version(void)
210{
211 char *p = NULL;
212 char *tmp = NULL;
213 double d;
214#ifdef __FreeBSD__
215 // JOSH - FIXME :)
216 d = 5.2; // :-)
217#else
218 tmp = call_program_and_get_last_line_of_output("uname -r");
219 p = strchr(tmp, '.');
220 if (p) {
221 p = strchr(++p, '.');
222 if (p) {
223 while (*p) {
224 *p = *(p + 1);
225 p++;
226 }
227 }
228 }
229 d = atof(tmp);
230 mr_free(tmp);
231#endif
232 log_msg(1, "g_kernel_version = %f", d);
233
234 if (g_kernel_version < 2.6) {
235 fatal_error("Please use MondoRescue < 3.3.0 to support that old kernel or upgrade your distribution :-)");
236 }
237 return(d);
238}
239
240
241/**
242 * Get the current time.
243 * @return number of seconds since the epoch.
244 */
245long get_time()
246{
247 return (long) time((void *) 0);
248}
249
250
251/**
252 * Initialize a RAID volume structure, setting fields to zero. The
253 * actual hard drive is unaffected.
254 *
255 * @param raidrec The RAID volume structure to initialize.
256 * @note This function is system dependent.
257 */
258#ifdef __FreeBSD__
259void initialize_raidrec(struct vinum_volume *raidrec)
260{
261 int i, j;
262 raidrec->volname[0] = '\0';
263 raidrec->plexes = 0;
264 for (i = 0; i < 9; ++i) {
265 raidrec->plex[i].raidlevel = -1;
266 raidrec->plex[i].stripesize = 0;
267 raidrec->plex[i].subdisks = 0;
268 for (j = 0; j < 9; ++j) {
269 strcpy(raidrec->plex[i].sd[j].which_device, "");
270 }
271 }
272}
273#else
274void initialize_raidrec(struct raid_device_record *raidrec)
275{
276 assert(raidrec != NULL);
277 raidrec->raid_device[0] = '\0';
278 raidrec->raid_level = -9;
279 raidrec->persistent_superblock = 1;
280 raidrec->chunk_size = 64;
281 raidrec->parity = -1;
282 raidrec->data_disks.entries = 0;
283 raidrec->spare_disks.entries = 0;
284 raidrec->parity_disks.entries = 0;
285 raidrec->failed_disks.entries = 0;
286 raidrec->additional_vars.entries = 0;
287}
288#endif
289
290
291
292
293/**
294 * Insert modules that Mondo requires.
295 * Currently inserts @c msdos, @c vfat, and @c loop for Linux;
296 * @c msdosfs and @c ext2fs for FreeBSD.
297 */
298void insmod_crucial_modules(void)
299{
300#ifdef __FreeBSD__
301 paranoid_system("kldstat | grep msdosfs || kldload msdosfs 2> /dev/null");
302 paranoid_system("kldstat | grep ext2fs || kldload ext2fs 2> /dev/null");
303#else
304 paranoid_system("modprobe -a msdos vfat loop &> /dev/null");
305#endif
306}
307
308/* compute the final options for bootable media, considering the command and the boot type */
309char *mr_compute_uefi_string(char *isofs_cmd) {
310
311 char *uefistr = NULL;
312 char *mondo_mkisofs_sz = NULL;
313
314 /* real media */
315 if (strstr(isofs_cmd,"growisofs")) {
316 mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_SYSLINUX);
317 } else {
318 /* iso image */
319 if (bkpinfo->boot_type == UEFI) {
320 if (strstr(isofs_cmd,"xorriso")) {
321 /* xorriso needs another '-' before efi-boot */
322 mr_asprintf(uefistr, "%s -%s", MONDO_UEFI_PREFIX, MONDO_MKISOFS_UEFI);
323 } else {
324 mr_asprintf(uefistr, "%s %s", MONDO_UEFI_PREFIX, MONDO_MKISOFS_UEFI);
325 }
326 } else {
327 mr_asprintf(uefistr, "%s",MONDO_MKISOFS_CMS);
328 }
329 mr_asprintf(mondo_mkisofs_sz, "%s%s%s ", isofs_cmd, MONDO_MKISOFS_REGULAR_SYSLINUX, uefistr);
330 }
331
332 return(mondo_mkisofs_sz);
333}
334
335/**
336 * Finish configuring the backup information structure. Call this function
337 * to set the parameters that depend on those that can be given on the command
338 * line.
339 *
340 * @param bkpinfo The backup information structure. Fields modified/used:
341 * - Used: @c bkpinfo->backup_data
342 * - Used: @c bkpinfo->backup_media_type
343 * - Used: @c bkpinfo->compression_level
344 * - Used: @c bkpinfo->include_paths
345 * - Used: @c bkpinfo->prefix
346 * - Used: @c bkpinfo->isodir
347 * - Used: @c bkpinfo->manual_cd_tray
348 * - Used: @c bkpinfo->media_device
349 * - Used: @c bkpinfo->netfs_mount
350 * - Used: @c bkpinfo->scratchdir
351 * - Used: @c bkpinfo->tmpdir
352 * - Used: @c bkpinfo->use_lzo
353 * - Modified: @c bkpinfo->call_before_iso
354 * - Modified: @c bkpinfo->call_make_iso
355 * - Modified: @c bkpinfo->optimal_set_size
356 * - Modified: @c bkpinfo->zip_exe
357 * - Modified: @c bkpinfo->zip_suffix
358 *
359 * @return number of errors, or 0 for success.
360 * @note Also creates directories that are specified in the @c bkpinfo structure but
361 * do not exist.
362 */
363int post_param_configuration()
364{
365 char *extra_cdrom_params = NULL;
366 char *mondo_mkisofs_sz = NULL;
367 char *command = NULL;
368 char *isofs_cmd = NULL;
369 int retval = 0;
370 char *cdr_exe = NULL;
371 char *tmp = NULL;
372 char *call_before_iso_user = NULL;
373 char *iso_dev = NULL;
374 char *iso_mnt = NULL;
375 char *iso_tmp = NULL;
376 char *iso_dir = NULL;
377
378 assert(bkpinfo != NULL);
379
380 bkpinfo->optimal_set_size = (IS_THIS_A_STREAMING_BACKUP(bkpinfo->backup_media_type) ? 16 : 16) * 1024L;
381
382 log_msg(1, "Post-param");
383 if (bkpinfo->backup_media_type == tape) {
384 if (whine_if_not_found("mt") == 1) {
385 fatal_error("Please install the mt command");
386 }
387 log_msg(1, "Tape");
388 if (bkpinfo->media_device == NULL) {
389 return(1);
390 }
391 mr_asprintf(tmp, "mt -f %s status", bkpinfo->media_device);
392 log_msg(1, "tmp = '%s'", tmp);
393 if (run_program_and_log_output(tmp, 3)) {
394 mr_free(tmp);
395 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.");
396 }
397 mr_free(tmp);
398 }
399 if (bkpinfo->backup_media_type == iso)
400 make_hole_for_dir(bkpinfo->isodir);
401
402 run_program_and_log_output("uname -a", 5);
403 run_program_and_log_output("cat /etc/*-release", 5);
404 run_program_and_log_output("cat /etc/*issue*", 5);
405#ifdef __FreeBSD__
406#else
407 run_program_and_log_output("cat /proc/cpuinfo", 5);
408 /*
409 run_program_and_log_output("rpm -q newt newt-devel slang slang-devel ncurses ncurses-devel gcc", 5);
410 */
411#endif
412
413 if (bkpinfo->use_lzo) {
414 mr_asprintf(bkpinfo->zip_exe, "%s", "lzop");
415 mr_asprintf(bkpinfo->zip_suffix, "%s", "lzo");
416 } else if (bkpinfo->use_gzip) {
417 mr_asprintf(bkpinfo->zip_exe, "%s", "gzip");
418 mr_asprintf(bkpinfo->zip_suffix, "%s", "gz");
419 } else if (bkpinfo->use_lzma) {
420 mr_asprintf(bkpinfo->zip_exe, "%s", "xz");
421 mr_asprintf(bkpinfo->zip_suffix, "%s", "xz");
422 } else if (bkpinfo->compression_level != 0) {
423 mr_asprintf(bkpinfo->zip_exe, "%s", "bzip2");
424 mr_asprintf(bkpinfo->zip_suffix, "%s", "bz2");
425 } else {
426 mr_free(bkpinfo->zip_exe);
427 mr_free(bkpinfo->zip_suffix);
428 }
429
430 if (bkpinfo->backup_media_type == optical) {
431 if ((cdr_exe = find_home_of_exe("growisofs")) == NULL) {
432 mr_free(cdr_exe);
433 fatal_error("Please install growisofs.");
434 }
435#ifdef __FreeBSD__
436 mr_asprintf(mondo_mkisofs_sz, MONDO_GROWISOFS_REGULAR_LILO);
437#else
438 mondo_mkisofs_sz = mr_compute_uefi_string(cdr_exe);
439#endif
440 mr_free(cdr_exe);
441
442 if (bkpinfo->manual_cd_tray) {
443 fatal_error("Manual CD tray + DVD not supported yet.");
444 // -m isn't supported by growisofs, BTW...
445 } else {
446 mr_asprintf(bkpinfo->call_make_iso, "%s %s -Z %s . 2>> _ERR_", mondo_mkisofs_sz, "", bkpinfo->media_device);
447 }
448 mr_free(mondo_mkisofs_sz);
449 if (getenv ("SUDO_COMMAND")) {
450 mr_asprintf(command, "strings `which growisofs` | grep -c SUDO_COMMAND");
451 tmp = call_program_and_get_last_line_of_output(command);
452 mr_free(command);
453 if (!strcmp(tmp, "1")) {
454 mr_free(tmp);
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(tmp);
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 == optical) {
465 if (!bkpinfo->manual_cd_tray) {
466 mr_asprintf(extra_cdrom_params, "-waiti ");
467 }
468 if (bkpinfo->wipe_media_first) {
469 mr_asprintf(extra_cdrom_params, "%s", "blank=fast ");
470 }
471 if ((cdr_exe = find_home_of_exe("cdrecord")) == NULL) {
472 if ((cdr_exe = find_home_of_exe("wodim")) == NULL) {
473 fatal_error("Please install either cdrecord or wodim.");
474 }
475 }
476 if ((tmp = find_home_of_exe("xorriso")) != NULL) {
477 mr_asprintf(isofs_cmd, "%s %s", tmp, MONDO_XORRISO_OPT);
478 } else if ((tmp = find_home_of_exe("genisoimage")) != NULL) {
479 mr_asprintf(isofs_cmd, "%s %s", tmp, MONDO_GENISOIMAGE_OPT);
480 } else if ((tmp = find_home_of_exe("mkisofs")) != NULL) {
481 mr_asprintf(isofs_cmd, "%s %s", tmp, MONDO_MKISOFS_OPT);
482 } else if ((tmp = find_home_of_exe("wodim")) != NULL) {
483 mr_asprintf(isofs_cmd, "%s %s", tmp, MONDO_WODIM_OPT);
484 } else {
485 fatal_error("Unable to find a command to create ISO among xorriso, genisoimage, mksiofs or wodim, please install one");
486 }
487 mr_free(tmp);
488
489#ifdef __FreeBSD__
490 mr_asprintf(mondo_mkisofs_sz, "%s%s ", isofs_cmd, MONDO_MKISOFS_REGULAR_LILO);
491#else
492 mondo_mkisofs_sz = mr_compute_uefi_string(isofs_cmd);
493#endif
494 mr_free(isofs_cmd);
495
496 if (bkpinfo->manual_cd_tray) {
497 if (bkpinfo->call_before_iso == NULL) {
498 mr_asprintf(bkpinfo->call_before_iso, "%s -o %s/"MONDO_TMPISOS" . 2>> _ERR_", mondo_mkisofs_sz, bkpinfo->tmpdir);
499 } else {
500 mr_asprintf(call_before_iso_user, "%s", bkpinfo->call_before_iso);
501 mr_free(bkpinfo->call_before_iso);
502 mr_asprintf(bkpinfo->call_before_iso, "( %s -o %s/"MONDO_TMPISOS" . 2>> _ERR_ ; %s )", mondo_mkisofs_sz, bkpinfo->tmpdir, call_before_iso_user);
503 mr_free(call_before_iso_user);
504 }
505 log_it("bkpinfo->call_before_iso = %s", bkpinfo->call_before_iso);
506 mr_asprintf(bkpinfo->call_make_iso, "%s %s -v %s fs=4m dev=%s %s/"MONDO_TMPISOS, cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject", extra_cdrom_params, bkpinfo->media_device, bkpinfo->tmpdir);
507 } else {
508 mr_asprintf(bkpinfo->call_make_iso, "%s . 2>> _ERR_ | %s %s %s fs=4m dev=%s -", mondo_mkisofs_sz, cdr_exe, (bkpinfo->please_dont_eject) ? " " : "-eject", extra_cdrom_params, bkpinfo->media_device);
509 }
510 mr_free(cdr_exe);
511 mr_free(mondo_mkisofs_sz);
512 mr_free(extra_cdrom_params);
513 } // end of CD code
514
515 if (bkpinfo->backup_media_type == iso) {
516
517/* Break up isodir into iso_mnt and iso_dir
518 * These will be used along with iso-dev at restore time
519 * to locate the ISOs where ever they're mounted
520 */
521
522 log_it("isodir = %s", bkpinfo->isodir);
523 mr_asprintf(command, "df -P %s | tail -n1 | cut -d' ' -f1", bkpinfo->isodir);
524 log_it("command = %s", command);
525 iso_dev = call_program_and_get_last_line_of_output(command);
526 log_it("res of it = %s", iso_dev);
527 mr_asprintf(tmp, "%s/ISO-DEV", bkpinfo->tmpdir);
528 write_one_liner_data_file(tmp, iso_dev);
529 mr_free(tmp);
530 mr_free(command);
531
532 mr_asprintf(command, "mount | grep -w %s | tail -n1 | cut -d' ' -f3", iso_dev);
533 mr_free(iso_dev);
534
535 log_it("command = %s", command);
536 iso_mnt = call_program_and_get_last_line_of_output(command);
537 log_it("res of it = %s", iso_mnt);
538 mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
539 write_one_liner_data_file(tmp, iso_mnt);
540 mr_free(tmp);
541 mr_free(command);
542
543 log_it("iso_mnt: %s, %d", iso_mnt, strlen(iso_mnt));
544 mr_asprintf(iso_tmp, "%s", bkpinfo->isodir);
545 if (strlen(iso_tmp) < strlen(iso_mnt)) {
546 mr_asprintf(iso_dir, "%s", "");
547 } else {
548 // If iso_mnt is only / then iso_dir is the full dir
549 // (the formula bellow doesn't work in this case)
550 if (strcmp(iso_mnt, "/") == 0) {
551 mr_asprintf(iso_dir, "%s", iso_tmp);
552 // else it's a part of iso_tmp
553 } else {
554 mr_asprintf(iso_dir, "%s", iso_tmp + strlen(iso_mnt));
555 }
556 }
557 mr_free(iso_mnt);
558 mr_free(iso_tmp);
559
560 mr_asprintf(tmp, "%s/ISO-DIR", bkpinfo->tmpdir);
561 write_one_liner_data_file(tmp, iso_dir);
562 mr_free(tmp);
563
564 log_it("iso-dir: %s", iso_dir);
565 mr_free(iso_dir);
566
567 mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
568 write_one_liner_data_file(tmp, bkpinfo->prefix);
569 mr_free(tmp);
570
571 log_it("iso-prefix: %s", bkpinfo->prefix);
572
573/* End patch */
574 } // end of iso code
575
576 if (bkpinfo->backup_media_type == netfs) {
577 mr_asprintf(tmp, "%s/ISO-PREFIX", bkpinfo->tmpdir);
578 write_one_liner_data_file(tmp, bkpinfo->prefix);
579 mr_free(tmp);
580
581 mr_asprintf(tmp, "%s/ISO-MNT", bkpinfo->tmpdir);
582 write_one_liner_data_file(tmp, bkpinfo->isodir);
583 mr_free(tmp);
584
585 mr_asprintf(tmp, "%s/ISO-DIR", bkpinfo->tmpdir);
586 write_one_liner_data_file(tmp, bkpinfo->netfs_remote_dir);
587 mr_free(tmp);
588
589 if (bkpinfo->netfs_mount) {
590 mr_asprintf(tmp, "%s/NETFS-SERVER-MOUNT", bkpinfo->tmpdir);
591 write_one_liner_data_file(tmp, bkpinfo->netfs_mount);
592 mr_free(tmp);
593 } else {
594 log_it("netfs_mount is NULL");
595 retval++;
596 }
597 }
598
599 log_it("Finished processing incoming params");
600 if (retval) {
601 fprintf(stderr, "Type 'man mondoarchive' for help.\n");
602 }
603 if (bkpinfo->include_paths == NULL) {
604 mr_asprintf(bkpinfo->include_paths, "/");
605 }
606 g_backup_media_type = bkpinfo->backup_media_type;
607 return (retval);
608}
609
610
611
612/**
613 * Check the user's system for sanity. Checks performed:
614 * - make sure user has enough RAM (32mb required, 64mb recommended)
615 * - make sure user has enough free space in @c /
616 * - check kernel for ramdisk support
617 * - make sure afio, cdrecord, mkisofs, bzip2, awk, md5sum, strings, mindi, and buffer exist
618 * - make sure CD-ROM is unmounted
619 * - make sure user's mountlist is OK by running <tt>mindi --makemountlist</tt>
620 *
621 * @return number of problems with the user's setup (0 for success)
622 */
623int some_basic_system_sanity_checks()
624{
625
626 /*@ buffers ************ */
627 char *tmp = NULL;
628
629 /*@ int's *************** */
630 int retval = 0;
631
632 mvaddstr_and_log_it(g_currentY, 0, "Checking sanity of your Linux distribution");
633#ifndef __FreeBSD__
634 if (system("which mkfs.vfat 2> /dev/null 1> /dev/null")
635 && !system("which mkfs.msdos 2> /dev/null 1> /dev/null")) {
636 log_it("OK, you've got mkfs.msdos but not mkfs.vfat; time for the fairy to wave her magic wand...");
637 run_program_and_log_output("ln -sf `which mkfs.msdos` /sbin/mkfs.vfat", FALSE);
638 }
639 tmp = call_program_and_get_last_line_of_output("free | grep Mem | head -n1 | tr -s ' ' '\t' | cut -f2");
640 if (atol(tmp) < 35000) {
641 retval++;
642 log_to_screen("You must have at least 32MB of RAM to use Mondo.");
643 }
644 if (atol(tmp) < 66000) {
645 log_to_screen("WARNING! You have very little RAM. Please upgrade to 64MB or more.");
646 }
647 mr_free(tmp);
648#endif
649
650 if (system("which " MKE2FS_OR_NEWFS " > /dev/null 2> /dev/null")) {
651 retval++;
652 log_to_screen("Unable to find " MKE2FS_OR_NEWFS " in system path.");
653 fatal_error("Please use \"su -\", not \"su\" to become root. OK?\n...and please don't e-mail the mailing list about this. Just read the message. :)");
654 }
655#ifndef __FreeBSD__
656 if (run_program_and_log_output("grep ramdisk /proc/devices", FALSE)) {
657 /* Some SuSE have ramdisk as modules, so insert it first, then test again */
658 run_program_and_log_output("modprobe brd 2> /dev/null > /dev/null",FALSE);
659 if (run_program_and_log_output("grep ramdisk /proc/devices", FALSE)) {
660 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?")) {
661 // retval++;
662 log_to_screen("It looks as if your kernel lacks ramdisk and initrd support.");
663 log_to_screen("I'll allow you to proceed but FYI, if I'm right, your kernel is broken.");
664 }
665 }
666 }
667#endif
668 retval += whine_if_not_found(MKE2FS_OR_NEWFS);
669 if (system("which xorriso > /dev/null 2> /dev/null")) {
670 if (system("which genisoimage > /dev/null 2> /dev/null")) {
671 retval += whine_if_not_found("mkisofs");
672 }
673 }
674 if (system("which wodim > /dev/null 2> /dev/null")) {
675 retval += whine_if_not_found("cdrecord");
676 }
677 retval += whine_if_not_found("bzip2");
678 retval += whine_if_not_found("gzip");
679 retval += whine_if_not_found("cmp");
680 retval += whine_if_not_found("awk");
681 retval += whine_if_not_found("md5sum");
682 retval += whine_if_not_found("strings");
683 retval += whine_if_not_found("mindi");
684 retval += whine_if_not_found("buffer");
685
686 // abort if Windows partition but no ms-sys and parted
687 if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -vE \"/dev/fd|nexdisk\"", 0)) {
688 if (!run_program_and_log_output("mount | grep -Ew 'vfat|fat|dos' | grep -Ew efi", 0)) {
689 log_to_screen("I think you have a EFI/UEFI partition.");
690 } else {
691 log_to_screen("I think you have a Windows 9x partition.");
692 }
693 retval += whine_if_not_found("parted");
694 }
695
696 run_program_and_log_output("umount `mount | grep cdr | cut -d' ' -f3 | tr '\n' ' '`", 5);
697 tmp = call_program_and_get_last_line_of_output("mount | grep -E 'cdr(om|w)'");
698 if (strcmp("", tmp)) {
699 if (strstr(tmp, "autofs")) {
700 log_to_screen("Your CD-ROM is mounted via autofs. I therefore cannot tell");
701 log_to_screen("if a CD actually is inserted. If a CD is inserted, please");
702 log_to_screen("eject it. Thank you.");
703 log_it("Ignoring autofs CD-ROM 'mount' since we hope nothing's in it.");
704 } else
705 if (run_program_and_log_output("uname -a | grep Knoppix", 5)) {
706 retval++;
707 mr_free(tmp);
708 fatal_error("Your CD-ROM drive is mounted. Please unmount it.");
709 }
710 }
711 mr_free(tmp);
712
713 run_program_and_log_output("cat /etc/fstab", 5);
714#ifdef __FreeBSD__
715 run_program_and_log_output("vinum printconfig", 5);
716#else
717 run_program_and_log_output("cat /etc/raidtab", 5);
718#endif
719
720 if (run_program_and_log_output("mindi -V", 1)) {
721 log_to_screen("Could not ascertain mindi's version number.");
722 log_to_screen("You have not installed Mondo and/or Mindi properly.");
723 log_to_screen("Please uninstall and reinstall them both.");
724 fatal_error("Please reinstall Mondo and Mindi.");
725 }
726 mr_asprintf(tmp, "mindi --makemountlist %s/mountlist.txt.test", bkpinfo->tmpdir);
727 if (run_program_and_log_output(tmp, 5)) {
728 log_to_screen("%s failed for some reason.", tmp);
729 mr_free(tmp);
730 log_to_screen("Please run that command by hand and examine "MINDI_LOGFILE);
731 log_to_screen("for more information. Perhaps your /etc/fstab file is insane.");
732 log_to_screen("Perhaps Mindi's MakeMountlist() subroutine has a bug. We'll see.");
733 retval++;
734 }
735 mr_free(tmp);
736
737 if (!run_program_and_log_output("mr-parted2fdisk -l 2>/dev/null | grep -i raid", 1) && !does_file_exist("/etc/raidtab")) {
738 log_to_screen("You have RAID partitions but no /etc/raidtab - creating one from /proc/mdstat");
739 create_raidtab_from_mdstat(MDSTAT_FILE,"/etc/raidtab");
740 }
741
742 if (retval) {
743 mvaddstr_and_log_it(g_currentY++, 74, "Failed.");
744 } else {
745 mvaddstr_and_log_it(g_currentY++, 74, "Done.");
746 }
747 return (retval);
748}
749
750
751
752/**
753 * Do some miscellaneous setup tasks to be performed before filling @c bkpinfo.
754 * Seeds the random-number generator, loads important modules, checks the sanity
755 * of the user's Linux distribution, and deletes logfile.
756 * @param bkpinfo The backup information structure. Will be initialized.
757 * @return number of errors (0 for success)
758 */
759int pre_param_configuration()
760{
761 int res = 0;
762 char *tmp = NULL;
763
764 make_hole_for_dir(MNT_CDROM);
765 assert(bkpinfo != NULL);
766 srandom((unsigned long) (time(NULL)));
767 insmod_crucial_modules();
768 if (bkpinfo->disaster_recovery) {
769 if (!does_nonMS_partition_exist()) {
770 fatal_error("I am in disaster recovery mode\nPlease don't run mondoarchive.");
771 }
772 }
773
774 mr_asprintf(tmp,"rm -Rf %s/changed.files*",MONDO_CACHE);
775 run_program_and_log_output(tmp, FALSE);
776 paranoid_free(tmp);
777 if (find_and_store_mondoarchives_home(g_mondo_home)) {
778 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");
779 res++;
780 return (res);
781 }
782 res += some_basic_system_sanity_checks();
783 if (res) {
784 log_it("Your distribution did not pass Mondo's sanity test.");
785 }
786 g_current_media_number = 1;
787 return (res);
788}
789
790/* From busybox under GPLv2 */
791#ifndef HAVE_MKDTEMP
792/* This is now actually part of POSIX.1, but was only added in 2008 */
793char* mkdtemp(char *template)
794{
795 if (mkstemp(template) == -1) {
796 return NULL;
797 }
798 unlink(template);
799 if (mkdir(template, 0700) != 0) {
800 return NULL;
801 }
802 return template;
803}
804#endif
805
806void setup_tmpdir(char *path) {
807
808 char *tmp = NULL;
809
810 if (bkpinfo->tmpdir != NULL) {
811 /* purging a potential old tmpdir */
812 if (chdir("/tmp")) {
813 // FIXME
814 }
815 if (strstr(bkpinfo->tmpdir,"mondo.tmp.") != NULL) {
816 log_it("Purging old tmpdir %s", bkpinfo->tmpdir);
817 mr_asprintf(tmp,"rm -Rf %s",bkpinfo->tmpdir);
818 } else {
819 log_it("Purging old tmpdir %s/mondo.tmp.*", bkpinfo->tmpdir);
820 mr_asprintf(tmp,"rm -Rf %s/mondo.tmp.*",bkpinfo->tmpdir);
821 }
822 paranoid_system(tmp);
823 mr_free(tmp);
824 }
825
826 /* Always take in account arg first, then env, then default */
827 if (path != NULL) {
828 mr_system("mkdir -p %s",path);
829 log_it("Created temporary directory %s", path);
830 mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", path);
831 } else if (getenv("TMPDIR")) {
832 mr_system("mkdir -p %s",getenv("TMPDIR"));
833 log_it("Created temporary directory %s", getenv("TMPDIR"));
834 mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("TMPDIR"));
835 } else if (getenv("MRTMP")) {
836 mr_system("mkdir -p %s",getenv("MRTMP"));
837 log_it("Created temporary directory %s", getenv("MRTMP"));
838 mr_asprintf(tmp, "%s/mondo.tmp.XXXXXX", getenv("MRTMP"));
839 } else {
840 mr_asprintf(tmp, "/tmp/mondo.tmp.XXXXXX");
841 }
842 mr_free(bkpinfo->tmpdir);
843 bkpinfo->tmpdir = mkdtemp(tmp);
844 if (bkpinfo->tmpdir == NULL) {
845 printf("Failed to create global tmp directory %s for Mondo.",tmp);
846 mr_free(tmp);
847 finish(-1);
848 }
849 log_it("bkpinfo->tmpdir is being set to %s", bkpinfo->tmpdir);
850 mr_system("mkdir -p %s/tmpfs", bkpinfo->tmpdir);
851}
852
853void setup_scratchdir(char *path) {
854
855 char *tmp = NULL;
856
857 if (bkpinfo->scratchdir != NULL) {
858 /* purging a potential old scratchdir */
859 if (chdir("/tmp")) {
860 // FIXME
861 }
862 if (strstr(bkpinfo->scratchdir,"mondo.scratch.") != NULL) {
863 log_it("Purging old scratchdir %s", bkpinfo->scratchdir);
864 mr_asprintf(tmp,"rm -Rf %s",bkpinfo->scratchdir);
865 } else {
866 log_it("Purging old scratchdir %s/mondo.scratch.*", bkpinfo->scratchdir);
867 mr_asprintf(tmp,"rm -Rf %s/mondo.scratch.*",bkpinfo->scratchdir);
868 }
869 paranoid_system(tmp);
870 mr_free(tmp);
871 }
872
873 /* Always take in account arg first, then env, then default */
874 if (path != NULL) {
875 mr_system("mkdir -p %s",path);
876 log_it("Created scratch directory %s", path);
877 mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", path);
878 } else if (getenv("MRSCRATCH")) {
879 mr_system("mkdir -p %s",getenv("MRSCRATCH"));
880 log_it("Created scratch directory %s", getenv("MRSCRATCH"));
881 mr_asprintf(tmp, "%s/mondo.scratch.XXXXXX", getenv("MRSCRATCH"));
882 } else {
883 mr_asprintf(tmp, "/tmp/mondo.scratch.XXXXXX");
884 }
885 mr_free(bkpinfo->scratchdir);
886 bkpinfo->scratchdir = mkdtemp(tmp);
887 if (bkpinfo->scratchdir == NULL) {
888 log_it("Failed to create global scratch directory %s for Mondo.",tmp);
889 mr_free(tmp);
890 finish(-1);
891 }
892 log_it("bkpinfo->scratchdir is being set to %s", bkpinfo->scratchdir);
893 mr_system("mkdir -p %s", bkpinfo->scratchdir);
894}
895
896
897/**
898 * Reset all fields of the backup information structure to a sensible default.
899 * @param bkpinfo The @c bkpinfo to reset.
900 */
901void reset_bkpinfo()
902{
903 assert(bkpinfo != NULL);
904 memset((void *) bkpinfo, 0, sizeof(struct s_bkpinfo));
905
906 bkpinfo->media_device = NULL;
907 bkpinfo->media_size = -1;
908 bkpinfo->boot_loader = '\0';
909 bkpinfo->boot_device = NULL;
910 bkpinfo->zip_exe = NULL;
911 bkpinfo->zip_suffix = NULL;
912 bkpinfo->image_devs = NULL;
913 bkpinfo->compression_level = 3;
914 bkpinfo->use_lzo = FALSE;
915 bkpinfo->use_gzip = FALSE;
916 bkpinfo->use_lzma = FALSE;
917 bkpinfo->verify_data = FALSE;
918 bkpinfo->backup_data = FALSE;
919 bkpinfo->restore_data = FALSE;
920 bkpinfo->use_star = FALSE;
921 bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;
922
923 /* We need tmpdir as early as possible for further function calls */
924 bkpinfo->tmpdir = NULL; // Really setup just after
925 bkpinfo->scratchdir = NULL; // Really setup just after
926 setup_tmpdir(NULL);
927 setup_scratchdir(NULL);
928
929 bkpinfo->disaster_recovery = am_I_in_disaster_recovery_mode();
930 if (bkpinfo->disaster_recovery) {
931 mr_asprintf(bkpinfo->isodir, "%s", "/");
932 } else {
933 mr_asprintf(bkpinfo->isodir, "%s", MONDO_CACHE);
934 }
935 mr_asprintf(bkpinfo->prefix, "%s", STD_PREFIX);
936 bkpinfo->optimal_set_size = 0L;
937 bkpinfo->backup_media_type = none;
938 bkpinfo->make_filelist = TRUE; // unless -J supplied to mondoarchive
939 bkpinfo->exclude_paths = NULL;
940 bkpinfo->include_paths = NULL;
941 bkpinfo->exclude_devs = NULL;
942 bkpinfo->restore_path = NULL;
943 bkpinfo->call_before_iso = NULL;
944 bkpinfo->call_make_iso = NULL;
945 bkpinfo->call_burn_iso = NULL;
946 bkpinfo->call_after_iso = NULL;
947 bkpinfo->kernel_path = NULL;
948 bkpinfo->netfs_mount = NULL;
949 bkpinfo->netfs_proto = NULL;
950 bkpinfo->netfs_user = NULL;
951 bkpinfo->netfs_remote_dir = NULL;
952 bkpinfo->postnuke_tarball = NULL;
953 bkpinfo->subdir = NULL;
954 bkpinfo->wipe_media_first = FALSE;
955 bkpinfo->differential = 0;
956 bkpinfo->please_dont_eject = FALSE;
957 bkpinfo->manual_cd_tray = FALSE;
958 bkpinfo->use_obdr = FALSE;
959 bkpinfo->restore_mode = interactive;
960 bkpinfo->boot_type = BIOS;
961}
962
963
964/**
965 * Get the remaining free space (in MB) on @p partition.
966 * @param partition The partition to check free space on (either a device or a mountpoint).
967 * @return The free space on @p partition, in MB.
968 */
969long free_space_on_given_partition(char *partition)
970{
971 char *out_sz = NULL;
972 char *command = NULL;
973 long res;
974
975 assert_string_is_neither_NULL_nor_zerolength(partition);
976
977 mr_asprintf(command, "df -m -P %s 1> /dev/null 2> /dev/null", partition);
978 if (system(command)) {
979 mr_free(command);
980 return (-1);
981 } // partition does not exist
982 mr_free(command);
983
984 mr_asprintf(command, "df -m -P %s | tail -n1 | tr -s ' ' '\t' | cut -f4", partition);
985 out_sz = call_program_and_get_last_line_of_output(command);
986 mr_free(command);
987
988 if (strlen(out_sz) == 0) {
989 mr_free(out_sz);
990 return (-1);
991 } // error within df, probably
992 res = atol(out_sz);
993 mr_free(out_sz);
994 return (res);
995}
996
997/**
998 * Retrieve the line containing @p label from the config file.
999 * @param config_file The file to read from, usually @c /tmp/mondorestore.cfg.
1000 * @param label What to read from the file.
1001 * @param value Where to put it.
1002 * @return 0 for success, 1 for failure.
1003 */
1004int read_cfg_var(char *config_file, char *label, char *value)
1005{
1006 /*@ buffer ****************************************************** */
1007 char *command = NULL;
1008 char *tmp = NULL;
1009
1010 /*@ end vars *************************************************** */
1011
1012 assert_string_is_neither_NULL_nor_zerolength(config_file);
1013 assert_string_is_neither_NULL_nor_zerolength(label);
1014 if (!does_file_exist(config_file)) {
1015 log_to_screen("(read_cfg_var) Cannot find %s config file", config_file);
1016 value[0] = '\0';
1017 return (1);
1018 } else if ((value != NULL) && (strstr(value, "/dev/") && strstr(value, "t0") && !strcmp(label, "media-dev"))) {
1019 log_msg(2, "FYI, I can't read new value for %s - already got %s", label, value);
1020 return (0);
1021 } else {
1022 mr_asprintf(command, "grep '%s .*' %s| cut -d' ' -f2,3,4,5", label, config_file);
1023 tmp = call_program_and_get_last_line_of_output(command);
1024 strcpy(value, tmp);
1025 mr_free(command);
1026
1027 log_msg(4, "Configuration item %s is %s", label, value);
1028 if (strlen(value) == 0) {
1029 return (1);
1030 } else {
1031 return (0);
1032 }
1033 }
1034}
1035
1036
1037
1038/**
1039 * Remount @c supermount if it was unmounted earlier.
1040 */
1041void remount_supermounts_if_necessary()
1042{
1043 if (g_remount_cdrom_at_end) {
1044 run_program_and_log_output("mount " MNT_CDROM, FALSE);
1045 }
1046}
1047
1048/**
1049 * Unmount @c supermount if it's mounted.
1050 */
1051void unmount_supermounts_if_necessary()
1052{
1053 if (run_program_and_log_output
1054 ("mount | grep cdrom | grep super", FALSE) == 0) {
1055 g_remount_cdrom_at_end = TRUE;
1056 run_program_and_log_output("umount " MNT_CDROM, FALSE);
1057 }
1058}
1059
1060/**
1061 * Whether we had to stop autofs (if so, restart it at end).
1062 */
1063bool g_autofs_stopped = FALSE;
1064
1065/**
1066 * Path to the autofs initscript ("" if none exists).
1067 */
1068char g_autofs_exe[MAX_STR_LEN];
1069
1070/**
1071 * Autofs initscript in Xandros Linux distribution.
1072 */
1073#define XANDROS_AUTOFS_FNAME "/etc/init.d/xandros-autofs"
1074
1075/**
1076 * Autofs initscript in most Linux distributions.
1077 */
1078#define STOCK_AUTOFS_FNAME "/etc/rc.d/init.d/autofs"
1079
1080/**
1081 * If autofs is mounted, stop it (restart at end).
1082 */
1083void stop_autofs_if_necessary()
1084{
1085 char *tmp = NULL;
1086
1087 g_autofs_exe[0] = '\0';
1088 if (does_file_exist(XANDROS_AUTOFS_FNAME)) {
1089 strcpy(g_autofs_exe, XANDROS_AUTOFS_FNAME);
1090 } else if (does_file_exist(STOCK_AUTOFS_FNAME)) {
1091 strcpy(g_autofs_exe, STOCK_AUTOFS_FNAME);
1092 }
1093
1094 if (!g_autofs_exe[0]) {
1095 log_msg(3, "No autofs detected.");
1096 } else {
1097 log_msg(3, "%s --- autofs detected", g_autofs_exe);
1098 // FIXME -- only disable it if it's running --- sprintf(tmp, "%s status", autofs_exe);
1099 mr_asprintf(tmp, "%s stop", g_autofs_exe);
1100 if (run_program_and_log_output(tmp, 2)) {
1101 log_it("Failed to stop autofs - I assume it wasn't running");
1102 } else {
1103 g_autofs_stopped = TRUE;
1104 log_it("Stopped autofs OK");
1105 }
1106 mr_free(tmp);
1107 }
1108}
1109
1110/**
1111 * If autofs was stopped earlier, restart it.
1112 */
1113void restart_autofs_if_necessary()
1114{
1115 char *tmp = NULL;
1116
1117 if (!g_autofs_stopped || !g_autofs_exe[0]) {
1118 log_msg(3, "No autofs detected.");
1119 return;
1120 }
1121 mr_asprintf(tmp, "%s start", g_autofs_exe);
1122 if (run_program_and_log_output(tmp, 2)) {
1123 log_it("Failed to start autofs");
1124 } else {
1125 g_autofs_stopped = FALSE;
1126 log_it("Started autofs OK");
1127 }
1128 mr_free(tmp);
1129}
1130
1131
1132/**
1133 * If this is a distribution like Gentoo that doesn't keep /boot mounted, mount it.
1134 */
1135void mount_boot_if_necessary() {
1136 char *tmp = NULL;
1137 char *command = NULL;
1138
1139 log_msg(1, "Started sub");
1140 log_msg(4, "About to set g_boot_mountpt[0] to '\\0'");
1141 g_boot_mountpt[0] = '\0';
1142 log_msg(4, "Done. Great. Setting command to something");
1143 mr_asprintf(command, "%s", "grep -v \":\" /etc/fstab | grep -vE '^#.*$' | grep -E \"[ ]/boot[ ]\" | tr -s ' ' '\t' | cut -f1 | head -n1");
1144 log_msg(4, "Cool. Command = '%s'", command);
1145 tmp = call_program_and_get_last_line_of_output(command);
1146 mr_free(command);
1147
1148 log_msg(4, "tmp = '%s'", tmp);
1149 log_it("/boot is at %s according to /etc/fstab", tmp);
1150 mr_asprintf(command, "mount | grep -Ew '/boot'");
1151 mr_free(tmp);
1152
1153 tmp = call_program_and_get_last_line_of_output(command);
1154 mr_free(command);
1155
1156 if (!strcmp(tmp,"")) {
1157 if ((strstr(tmp, "LABEL=") != NULL) || (strstr(tmp,"UUID=") != NULL)) {
1158 if (!run_program_and_log_output("mount /boot", 5)) {
1159 strcpy(g_boot_mountpt, "/boot");
1160 log_msg(1, "Mounted /boot");
1161 } else {
1162 log_it("...ignored cos it's a label or uuid :-)");
1163 }
1164 } else {
1165 mr_asprintf(command, "mount | grep -E '^%s'", tmp);
1166 log_msg(3, "command = %s", command);
1167 if (run_program_and_log_output(command, 5)) {
1168 strcpy(g_boot_mountpt, tmp);
1169 mr_free(tmp);
1170 log_it("%s (your /boot partition) is not mounted. I'll mount it before backing up", g_boot_mountpt);
1171
1172 mr_asprintf(tmp, "mount %s", g_boot_mountpt);
1173 if (run_program_and_log_output(tmp, 5)) {
1174 g_boot_mountpt[0] = '\0';
1175 log_msg(1, "Plan B");
1176 if (!run_program_and_log_output("mount /boot", 5)) {
1177 strcpy(g_boot_mountpt, "/boot");
1178 log_msg(1, "Plan B worked");
1179 } else {
1180 log_msg(1,
1181 "Plan B failed. Unable to mount /boot for backup purposes. This probably means /boot is mounted already, or doesn't have its own partition.");
1182 }
1183 }
1184 }
1185 mr_free(command);
1186 }
1187 }
1188 mr_free(tmp);
1189 log_msg(1, "Ended sub");
1190}
1191
1192
1193/**
1194 * If we mounted /boot earlier, unmount it.
1195 */
1196void unmount_boot_if_necessary()
1197{
1198 char *tmp = NULL;
1199
1200 log_msg(3, "starting");
1201 if (g_boot_mountpt[0]) {
1202 mr_asprintf(tmp, "umount %s", g_boot_mountpt);
1203 if (run_program_and_log_output(tmp, 5)) {
1204 log_it("WARNING - unable to unmount /boot");
1205 }
1206 mr_free(tmp);
1207 }
1208 log_msg(3, "leaving");
1209}
1210
1211
1212
1213/**
1214 * Write a line to a configuration file. Writes a line of the form,
1215 * @c label @c value.
1216 * @param config_file The file to write to. Usually @c mondorestore.cfg.
1217 * @param label What to call this bit of data you're writing.
1218 * @param value The bit of data you're writing.
1219 * @return 0 for success, 1 for failure.
1220 */
1221int write_cfg_var(char *config_file, char *label, char *value)
1222{
1223 /*@ buffers ***************************************************** */
1224 char *command = NULL;
1225 char *tempfile = NULL;
1226
1227
1228 /*@ end vars *************************************************** */
1229 assert_string_is_neither_NULL_nor_zerolength(config_file);
1230 assert_string_is_neither_NULL_nor_zerolength(label);
1231 assert(value != NULL);
1232 if (!does_file_exist(config_file)) {
1233 log_to_screen("(write_cfg_file) Cannot find %s config file", config_file);
1234 return (1);
1235 }
1236 mr_asprintf(tempfile, "%s/mojo-jojo.blah", bkpinfo->tmpdir);
1237 if (does_file_exist(config_file)) {
1238 mr_asprintf(command, "grep -vE '^%s .*$' %s > %s", label, config_file, tempfile);
1239 paranoid_system(command);
1240 mr_free(command);
1241 }
1242 mr_asprintf(command, "echo \"%s %s\" >> %s", label, value, tempfile);
1243 paranoid_system(command);
1244 mr_free(command);
1245
1246 mr_asprintf(command, "mv -f %s %s", tempfile, config_file);
1247 paranoid_system(command);
1248 mr_free(command);
1249 unlink(tempfile);
1250 mr_free(tempfile);
1251 return (0);
1252}
1253
1254
1255/**
1256 * The standard log_debug_msg() (log_msg() also due to a macro). Writes some describing
1257 * information to the logfile.
1258 */
1259void standard_log_debug_msg(int debug_level, const char *szFile, const char *szFunction, int nLine, const char *fmt, ...) {
1260
1261 va_list args;
1262 static int depth = 0;
1263 FILE *fout;
1264
1265 if (depth > 5) {
1266 depth--;
1267 return;
1268 }
1269 depth++;
1270
1271 if (debug_level <= g_loglevel) {
1272 if (!(fout = fopen(MONDO_LOGFILE, "a"))) {
1273 return;
1274 }
1275
1276 // add tabs to distinguish log levels
1277 if (debug_level > 0) {
1278 fprintf(fout, "DBG%d: ", debug_level);
1279 if (getpid() == g_main_pid)
1280 fprintf(fout, "[Main] %s->%s#%d: ", szFile, szFunction, nLine);
1281 else if (getpid() == g_buffer_pid && g_buffer_pid > 0)
1282 fprintf(fout, "[Buff] %s->%s#%d: ", szFile, szFunction, nLine);
1283 else
1284 fprintf(fout, "[TH=%d] %s->%s#%d: ", getpid(), szFile, szFunction, nLine);
1285 } else {
1286 fprintf(fout, "INFO: ");
1287 }
1288 va_start(args, fmt);
1289 vfprintf(fout, fmt, args);
1290 va_end(args);
1291
1292 fprintf(fout, "\n");
1293 paranoid_fclose(fout);
1294 }
1295 depth--;
1296}
1297
1298/**
1299 * Function pointer to the @c log_debug_msg function to use. Points to standard_log_debug_msg() by default.
1300 */
1301void (*log_debug_msg) (int, const char *, const char *, int, const char *, ...) = standard_log_debug_msg;
1302
1303
1304/**
1305 * Allocate or free important globals, depending on @p mal.
1306 * @param mal If TRUE, malloc; if FALSE, free.
1307 */
1308void do_libmondo_global_strings_thing(int mal)
1309{
1310 if (mal) {
1311 malloc_string(g_boot_mountpt);
1312 malloc_string(g_mondo_home);
1313 malloc_string(g_magicdev_command);
1314 } else {
1315 paranoid_free(g_boot_mountpt);
1316 paranoid_free(g_mondo_home);
1317 paranoid_free(g_magicdev_command);
1318 }
1319}
1320
1321/**
1322 * Allocate important globals.
1323 * @see do_libmondo_global_strings_thing
1324 */
1325void malloc_libmondo_global_strings(void)
1326{
1327 do_libmondo_global_strings_thing(1);
1328}
1329
1330/**
1331 * Free important globals.
1332 * @see do_libmondo_global_strings_thing
1333 */
1334void free_libmondo_global_strings(void)
1335{
1336 do_libmondo_global_strings_thing(0);
1337}
1338
1339
1340
1341/**
1342 * Stop @c magicdev if it's running.
1343 * The command used to start it is saved in @p g_magicdev_command.
1344 */
1345void stop_magicdev_if_necessary()
1346{
1347 char *tmp = NULL;
1348
1349 tmp = call_program_and_get_last_line_of_output("ps ax | grep -w magicdev | grep -v grep | tr -s '\t' ' '| cut -d' ' -f6-99");
1350 strcpy(g_magicdev_command, tmp);
1351 if (g_magicdev_command[0]) {
1352 log_msg(1, "g_magicdev_command = '%s'", g_magicdev_command);
1353 paranoid_system("killall magicdev");
1354 }
1355 mr_free(tmp);
1356}
1357
1358
1359/**
1360 * Restart magicdev if it was stopped.
1361 */
1362void restart_magicdev_if_necessary()
1363{
1364 char *tmp = NULL;
1365
1366 if (g_magicdev_command && g_magicdev_command[0]) {
1367 mr_asprintf(tmp, "%s &", g_magicdev_command);
1368 paranoid_system(tmp);
1369 mr_free(tmp);
1370 }
1371}
1372
1373/* @} - end of utilityGroup */
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