source: MondoRescue/trunk/mondo/src/common/libmondo-fork.c@ 1161

Last change on this file since 1161 was 1161, checked in by Bruno Cornec, 17 years ago

Update trunk with the latest feedback from stable (obtained with meld) - First pass
  • Property svn:keywords set to Id
File size: 18.2 KB
Line 
1/* libmondo-fork.c - subroutines for handling forking/pthreads/etc.
2 * $Id: libmondo-fork.c 1161 2007-02-14 12:13:49Z bruno $
3 */
4#include "my-stuff.h"
5#include "mr_mem.h"
6#include "mondostructures.h"
7#include "libmondo-fork.h"
8#include "libmondo-string-EXT.h"
9#include "newt-specific-EXT.h"
10#include "libmondo-files-EXT.h"
11#include "libmondo-tools-EXT.h"
12#include "mr_mem.h"
13
14extern bool g_text_mode;
15pid_t g_buffer_pid = 0;
16
17
18/**
19 * Call a program and retrieve its last line of output.
20 * @param call The program to run.
21 * @return The last line of its output.
22 * @note The returned value should be freed by caller
23 */
24char *call_program_and_get_last_line_of_output(char *call)
25{
26 char *result = NULL;
27 FILE *fin = NULL;
28 size_t n = 0;
29
30 assert_string_is_neither_NULL_nor_zerolength(call);
31
32 if ((fin = popen(call, "r"))) {
33 for (mr_getline(&result, &n, fin); !feof(fin); mr_getline(&result, &n, fin));
34 paranoid_pclose(fin);
35 } else {
36 log_OS_error("Unable to popen call");
37 }
38 return(result);
39}
40
41#define MONDO_POPMSG _("Your PC will not retract the CD tray automatically. Please call mondoarchive with the -m (manual CD tray) flag.")
42
43/**
44 * Call mkisofs to create an ISO image.
45 * @param bkpinfo The backup information structure. Fields used:
46 * - @c bkpinfo->manual_cd_tray
47 * - @c bkpinfo->backup_media_type
48 * - @c bkpinfo->please_dont_eject_when_restoring
49 * @param basic_call The call to mkisofs. May contain tokens that will be resolved to actual data. The tokens are:
50 * - @c _ISO_ will become the ISO file (@p isofile)
51 * - @c _CD#_ becomes the CD number (@p cd_no)
52 * - @c _ERR_ becomes the logfile (@p g_logfile)
53 * @param isofile Replaces @c _ISO_ in @p basic_call. Should probably be the ISO image to create (-o parameter to mkisofs).
54 * @param cd_no Replaces @c _CD#_ in @p basic_call. Should probably be the CD number.
55 * @param logstub Unused.
56 * @param what_i_am_doing The action taking place (e.g. "Making ISO #1"). Used as the title of the progress dialog.
57 * @return Exit code of @c mkisofs (0 is success, anything else indicates failure).
58 * @bug @p logstub is unused.
59 */
60int
61eval_call_to_make_ISO(struct s_bkpinfo *bkpinfo,
62 char *basic_call, char *isofile,
63 int cd_no, char *logstub, char *what_i_am_doing)
64{
65
66 /*@ int's *** */
67 int retval = 0;
68
69
70 /*@ buffers *** */
71 char *midway_call, *ultimate_call, *tmp;
72 char *p = NULL;
73 char *cd_number_str = NULL;
74 char *command = NULL;
75
76
77/*@*********** End Variables ***************************************/
78
79 mr_msg(3, "Starting");
80 assert(bkpinfo != NULL);
81 assert_string_is_neither_NULL_nor_zerolength(basic_call);
82 assert_string_is_neither_NULL_nor_zerolength(isofile);
83 assert_string_is_neither_NULL_nor_zerolength(logstub);
84
85 midway_call = mr_malloc(1200);
86 ultimate_call = mr_malloc(1200);
87 tmp = mr_malloc(1200);
88
89 mr_asprintf(&cd_number_str, "%d", cd_no);
90 resolve_naff_tokens(midway_call, basic_call, isofile, "_ISO_");
91 resolve_naff_tokens(tmp, midway_call, cd_number_str, "_CD#_");
92 mr_free(cd_number_str);
93
94 resolve_naff_tokens(ultimate_call, tmp, MONDO_LOGFILE, "_ERR_");
95 mr_msg(4, "basic call = '%s'", basic_call);
96 mr_msg(4, "midway_call = '%s'", midway_call);
97 mr_msg(4, "tmp = '%s'", tmp);
98 mr_msg(4, "ultimate call = '%s'", ultimate_call);
99 mr_asprintf(&command, "%s >> %s", ultimate_call, MONDO_LOGFILE);
100
101 log_to_screen
102 (_("Please be patient. Do not be alarmed by on-screen inactivity."));
103 mr_msg(4, "Calling open_evalcall_form() with what_i_am_doing='%s'",
104 what_i_am_doing);
105 if (bkpinfo->manual_cd_tray) {
106 /* Find everything after a 2>> and remove it */
107 p = strstr(command, "2>>");
108 if (p) {
109 for (; *p != ' ' && *p != '\0'; p++) {
110 *p = ' ';
111 }
112 }
113#ifndef _XWIN
114 if (!g_text_mode) {
115 newtSuspend();
116 }
117#endif
118 mr_msg(1, "command = '%s'", command);
119 retval += system(command);
120 if (!g_text_mode) {
121 newtResume();
122 }
123 if (retval) {
124 mr_msg(2, "Basic call '%s' returned an error.", basic_call);
125 popup_and_OK(_("Press ENTER to continue."));
126 popup_and_OK
127 (_("mkisofs and/or cdrecord returned an error. CD was not created"));
128 }
129 }
130 /* if text mode then do the above & RETURN; if not text mode, do this... */
131 else {
132 mr_msg(3, "command = '%s'", command);
133// yes_this_is_a_goto:
134 retval =
135 run_external_binary_with_percentage_indicator_NEW
136 (what_i_am_doing, command);
137 }
138 mr_free(command);
139
140 mr_free(midway_call);
141 mr_free(ultimate_call);
142 mr_free(tmp);
143 return (retval);
144}
145
146
147/**
148 * Run a program and log its output (stdout and stderr) to the logfile.
149 * @param program The program to run. Passed to the shell, so you can use pipes etc.
150 * @param debug_level If @p g_loglevel is higher than this, do not log the output.
151 * @return The exit code of @p program (depends on the command, but 0 almost always indicates success).
152 */
153int run_program_and_log_output(char *program, int debug_level)
154{
155 /*@ buffer ****************************************************** */
156 char *callstr = NULL;
157 char *incoming = NULL;
158
159 /*@ int ********************************************************* */
160 int res = 0;
161 size_t n = 0;
162 bool log_if_failure = FALSE;
163 bool log_if_success = FALSE;
164
165 /*@ pointers *************************************************** */
166 FILE *fin;
167 char *p;
168
169 /*@ end vars *************************************************** */
170
171 assert(program != NULL);
172 if (!program[0]) {
173 mr_msg(2, "Warning - asked to run zerolength program");
174 return (1);
175 }
176
177 if (debug_level <= g_loglevel) {
178 log_if_success = TRUE;
179 log_if_failure = TRUE;
180 }
181 mr_asprintf(&callstr,
182 "%s > /tmp/mondo-run-prog-thing.tmp 2> /tmp/mondo-run-prog-thing.err",
183 program);
184 while ((p = strchr(callstr, '\r'))) {
185 *p = ' ';
186 }
187 while ((p = strchr(callstr, '\n'))) {
188 *p = ' ';
189 } /* single '=' is intentional */
190
191
192 res = system(callstr);
193 if (((res == 0) && log_if_success) || ((res != 0) && log_if_failure)) {
194 mr_msg(0, "running: %s", callstr);
195 mr_msg(0,
196 "--------------------------------start of output-----------------------------");
197 }
198 mr_free(callstr);
199
200 if (log_if_failure
201 &&
202 system
203 ("cat /tmp/mondo-run-prog-thing.err >> /tmp/mondo-run-prog-thing.tmp 2> /dev/null"))
204 {
205 log_OS_error("Command failed");
206 }
207 unlink("/tmp/mondo-run-prog-thing.err");
208 fin = fopen("/tmp/mondo-run-prog-thing.tmp", "r");
209 if (fin) {
210 for (mr_getline(&incoming, &n, fin); !feof(fin);
211 mr_getline(&incoming, &n, fin)) {
212 /* patch by Heiko Schlittermann */
213 p = incoming;
214 while (p && *p) {
215 if ((p = strchr(p, '%'))) {
216 memmove(p, p + 1, strlen(p) + 1);
217 p += 2;
218 }
219 }
220 /* end of patch */
221 strip_spaces(incoming);
222 if ((res == 0 && log_if_success)
223 || (res != 0 && log_if_failure)) {
224 mr_msg(0, incoming);
225 }
226 }
227 mr_free(incoming);
228 paranoid_fclose(fin);
229 }
230 unlink("/tmp/mondo-run-prog-thing.tmp");
231 if ((res == 0 && log_if_success) || (res != 0 && log_if_failure)) {
232 mr_msg(0,
233 "--------------------------------end of output------------------------------");
234 if (res) {
235 mr_msg(0, "...ran with res=%d", res);
236 } else {
237 mr_msg(0, "...ran just fine. :-)");
238 }
239 }
240// else
241// { mr_msg (0, "-------------------------------ran w/ res=%d------------------------------", res); }
242 return (res);
243}
244
245
246/**
247 * Run a program and log its output to the screen.
248 * @param basic_call The program to run.
249 * @param what_i_am_doing The title of the evalcall form.
250 * @return The return value of the command (varies, but 0 almost always means success).
251 * @see run_program_and_log_output
252 * @see log_to_screen
253 */
254int run_program_and_log_to_screen(char *basic_call, char *what_i_am_doing)
255{
256 /*@ int ******************************************************** */
257 int retval = 0;
258 int res = 0;
259 int i;
260
261 /*@ pointers **************************************************** */
262 FILE *fin;
263
264 /*@ buffers **************************************************** */
265 char *tmp = NULL;
266 char *command = NULL;
267 char *lockfile = NULL;
268
269 /*@ end vars *************************************************** */
270
271 assert_string_is_neither_NULL_nor_zerolength(basic_call);
272
273 mr_asprintf(&lockfile, "/tmp/mojo-jojo.blah.XXXXXX");
274 mkstemp(lockfile);
275 mr_asprintf(&command,
276 "echo hi > %s ; %s >> %s 2>> %s; res=$?; sleep 1; rm -f %s; exit $res",
277 lockfile, basic_call, MONDO_LOGFILE, MONDO_LOGFILE, lockfile);
278 open_evalcall_form(what_i_am_doing);
279 mr_asprintf(&tmp, "Executing %s", basic_call);
280 mr_msg(2, tmp);
281 mr_free(tmp);
282
283 if (!(fin = popen(command, "r"))) {
284 log_OS_error("Unable to popen-in command");
285 mr_asprintf(&tmp, _("Failed utterly to call '%s'"), command);
286 log_to_screen(tmp);
287 mr_free(tmp);
288 mr_free(lockfile);
289 mr_free(command);
290 return (1);
291 }
292 mr_free(command);
293
294 if (!does_file_exist(lockfile)) {
295 log_to_screen(_("Waiting for external binary to start"));
296 for (i = 0; i < 60 && !does_file_exist(lockfile); sleep(1), i++) {
297 mr_msg(3, "Waiting for lockfile %s to exist", lockfile);
298 }
299 }
300 /* This works on Newt, and it gives quicker updates. */
301 for (; does_file_exist(lockfile); sleep(1)) {
302 log_file_end_to_screen(MONDO_LOGFILE, "");
303 update_evalcall_form(1);
304 }
305 /* Evaluate the status returned by pclose to get the exit code of the called program. */
306 errno = 0;
307 res = pclose(fin);
308 /* Log actual pclose errors. */
309 if (errno) {
310 mr_msg(5, "pclose err: %d", errno);
311 }
312 /* Check if we have a valid status. If we do, extract the called program's exit code. */
313 /* If we don't, highlight this fact by returning -1. */
314 if (WIFEXITED(res)) {
315 retval = WEXITSTATUS(res);
316 } else {
317 retval = -1;
318 }
319 close_evalcall_form();
320 unlink(lockfile);
321 mr_free(lockfile);
322
323 return (retval);
324}
325
326
327/**
328 * Apparently used. @bug This has a purpose, but what?
329 */
330#define PIMP_START_SZ "STARTSTARTSTART9ff3kff9a82gv34r7fghbkaBBC2T231hc81h42vws8"
331#define PIMP_END_SZ "ENDENDEND0xBBC10xBBC2T231hc81h42vws89ff3kff9a82gv34r7fghbka"
332
333
334
335
336int copy_from_src_to_dest(FILE * f_orig, FILE * f_archived, char direction)
337{
338// if dir=='w' then copy from orig to archived
339// if dir=='r' then copy from archived to orig
340 char *tmp = NULL;
341 char *buf = NULL;
342 long int bytes_to_be_read, bytes_read_in, bytes_written_out =
343 0, bufcap, subsliceno = 0;
344 int retval = 0;
345 FILE *fin = NULL;
346 FILE *fout = NULL;
347 FILE *ftmp = NULL;
348
349 mr_msg(5, "Opening.");
350 bufcap = 256L * 1024L;
351 buf = mr_malloc(bufcap);
352
353 if (direction == 'w') {
354 fin = f_orig;
355 fout = f_archived;
356 mr_asprintf(&tmp, "%-64s", PIMP_START_SZ);
357 if (fwrite(tmp, 1, 64, fout) != 64) {
358 fatal_error("Can't write the introductory block");
359 }
360 mr_free(tmp);
361
362 while (1) {
363 bytes_to_be_read = bytes_read_in = fread(buf, 1, bufcap, fin);
364 if (bytes_read_in == 0) {
365 break;
366 }
367 mr_asprintf(&tmp, "%-64ld", bytes_read_in);
368 if (fwrite(tmp, 1, 64, fout) != 64) {
369 fatal_error("Cannot write introductory block");
370 }
371 mr_free(tmp);
372
373 mr_msg(7,
374 "subslice #%ld --- I have read %ld of %ld bytes in from f_orig",
375 subsliceno, bytes_read_in, bytes_to_be_read);
376 bytes_written_out += fwrite(buf, 1, bytes_read_in, fout);
377 mr_asprintf(&tmp, "%-64ld", subsliceno);
378 if (fwrite(tmp, 1, 64, fout) != 64) {
379 fatal_error("Cannot write post-thingy block");
380 }
381 mr_free(tmp);
382
383 mr_msg(7, "Subslice #%d written OK", subsliceno);
384 subsliceno++;
385 }
386 mr_asprintf(&tmp, "%-64ld", 0L);
387 if (fwrite(tmp, 1, 64L, fout) != 64L) {
388 fatal_error("Cannot write final introductory block");
389 }
390 } else {
391 fin = f_archived;
392 fout = f_orig;
393 if (!(tmp = malloc(64L))) {
394 fatal_error("Failed to malloc() tmp");
395 }
396 if (fread(tmp, 1, 64L, fin) != 64L) {
397 fatal_error("Cannot read the introductory block");
398 }
399 mr_msg(5, "tmp is %s", tmp);
400 if (!strstr(tmp, PIMP_START_SZ)) {
401 fatal_error("Can't find intro blk");
402 }
403 if (fread(tmp, 1, 64L, fin) != 64L) {
404 fatal_error("Cannot read introductory blk");
405 }
406 bytes_to_be_read = atol(tmp);
407 while (bytes_to_be_read > 0) {
408 mr_msg(7, "subslice#%ld, bytes=%ld", subsliceno,
409 bytes_to_be_read);
410 bytes_read_in = fread(buf, 1, bytes_to_be_read, fin);
411 if (bytes_read_in != bytes_to_be_read) {
412 fatal_error
413 ("Danger, WIll Robinson. Failed to read whole subvol from archives.");
414 }
415 bytes_written_out += fwrite(buf, 1, bytes_read_in, fout);
416 if (fread(tmp, 1, 64L, fin) != 64L) {
417 fatal_error("Cannot read post-thingy block");
418 }
419 if (atol(tmp) != subsliceno) {
420 mr_msg(1, "Wanted subslice %ld but got %ld ('%s')",
421 subsliceno, atol(tmp), tmp);
422 }
423 mr_msg(7, "Subslice #%ld read OK", subsliceno);
424 subsliceno++;
425 if (fread(tmp, 1, 64L, fin) != 64L) {
426 fatal_error("Cannot read introductory block");
427 }
428 bytes_to_be_read = atol(tmp);
429 }
430 }
431
432// mr_msg(4, "Written %ld of %ld bytes", bytes_written_out, bytes_read_in);
433
434 if (direction == 'w') {
435 mr_free(tmp);
436 mr_asprintf(&tmp, "%-64s", PIMP_END_SZ);
437 if (fwrite(tmp, 1, 64L, fout) != 64L) {
438 fatal_error("Can't write the final block");
439 }
440 mr_free(tmp);
441 } else {
442 mr_msg(1, "tmpA is %s", tmp);
443 if (!strstr(tmp, PIMP_END_SZ)) {
444 if (fread(tmp, 1, 64L, fin) != 64L) {
445 fatal_error("Can't read the final block");
446 }
447 mr_msg(5, "tmpB is %s", tmp);
448 if (!strstr(tmp, PIMP_END_SZ)) {
449 ftmp = fopen("/tmp/out.leftover", "w");
450 bytes_read_in = fread(tmp, 1, 64L, fin);
451 mr_msg(1, "bytes_read_in = %ld", bytes_read_in);
452// if (bytes_read_in!=128+64) { fatal_error("Can't read the terminating block"); }
453 fwrite(tmp, 1, bytes_read_in, ftmp);
454
455 mr_free(tmp);
456 if (!(tmp = malloc(512))) {
457 fatal_error("Failed to malloc() tmp");
458 }
459 /* BERLIOS : strange ???
460 s-printf(tmp, "I am here - %llu", ftello(fin));
461 mr_msg(0, tmp);
462 */
463 fread(tmp, 1, 512, fin);
464 mr_msg(0, "tmp = '%s'", tmp);
465 fwrite(tmp, 1, 512, ftmp);
466 fclose(ftmp);
467 fatal_error("Missing terminating block");
468 }
469 }
470 mr_free(tmp);
471 }
472
473 mr_free(buf);
474 mr_msg(3, "Successfully copied %ld bytes", bytes_written_out);
475 return (retval);
476}
477
478/**
479 * Feed @p input_device through ntfsclone to @p output_fname.
480 * @param input_device The device to image.
481 * @param output_fname The file to write.
482 * @return 0 for success, nonzero for failure.
483 */
484int feed_into_ntfsprog(char *input_device, char *output_fname)
485{
486// BACKUP
487 int res = -1;
488 char *command = NULL;
489 char *tmp = NULL;
490
491 if (!does_file_exist(input_device)) {
492 fatal_error("input device does not exist");
493 }
494 tmp = find_home_of_exe("ntfsclone");
495 if (!tmp) {
496 fatal_error("ntfsclone not found");
497 }
498 mr_free(tmp);
499
500 mr_asprintf(&command, "ntfsclone --force --save-image --overwrite %s %s", output_fname, input_device);
501 res = run_program_and_log_output(command, 5);
502 mr_free(command);
503
504 unlink(output_fname);
505 return (res);
506}
507
508
509int run_external_binary_with_percentage_indicator_OLD(char *tt, char *cmd)
510{
511
512 int res = 0;
513 int percentage = 0;
514 int maxpc = 0;
515 int pcno = 0;
516 int last_pcno = 0;
517
518 char *command = NULL;
519 char *tempfile = NULL;
520 FILE *pin = NULL;
521
522 assert_string_is_neither_NULL_nor_zerolength(cmd);
523
524 tempfile = call_program_and_get_last_line_of_output("mktemp -q /tmp/mondo.XXXXXXXX");
525 mr_asprintf(&command, "%s >> %s 2>> %s; rm -f %s", cmd, tempfile, tempfile,
526 tempfile);
527 mr_msg(3, command);
528 open_evalcall_form(tt);
529
530 if (!(pin = popen(command, "r"))) {
531 log_OS_error("fmt err");
532 mr_free(command);
533 mr_free(tempfile);
534 return (1);
535 }
536 mr_free(command);
537
538 maxpc = 100;
539// OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD
540 for (sleep(1); does_file_exist(tempfile); sleep(1)) {
541 pcno = grab_percentage_from_last_line_of_file(MONDO_LOGFILE);
542 if (pcno < 0 || pcno > 100) {
543 mr_msg(5, "Weird pc#");
544 continue;
545 }
546 percentage = pcno * 100 / maxpc;
547 if (pcno <= 5 && last_pcno > 40) {
548 close_evalcall_form();
549 open_evalcall_form("_(Verifying...");
550 }
551 last_pcno = pcno;
552 update_evalcall_form(percentage);
553 }
554// OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD
555 close_evalcall_form();
556 if (pclose(pin)) {
557 res++;
558 log_OS_error("Unable to pclose");
559 }
560 unlink(tempfile);
561 mr_free(tempfile);
562 return (res);
563}
564
565
566void *run_prog_in_bkgd_then_exit(void *info)
567{
568 char *sz_command;
569 static int res = 4444;
570
571 res = 999;
572 sz_command = (char *) info;
573 mr_msg(4, "sz_command = '%s'", sz_command);
574 res = system(sz_command);
575 if (res > 256 && res != 4444) {
576 res = res / 256;
577 }
578 mr_msg(4, "child res = %d", res);
579 sz_command[0] = '\0';
580 pthread_exit((void *) (&res));
581}
582
583
584int run_external_binary_with_percentage_indicator_NEW(char *tt, char *cmd)
585{
586
587 /*@ int *************************************************************** */
588 int res = 0;
589 int percentage = 0;
590 int maxpc = 100;
591 int pcno = 0;
592 int last_pcno = 0;
593 int counter = 0;
594
595 /*@ buffers *********************************************************** */
596 char *command = NULL;
597 /*@ pointers ********************************************************** */
598 static int chldres = 0;
599 int *pchild_result;
600 pthread_t childthread;
601
602 pchild_result = &chldres;
603 assert_string_is_neither_NULL_nor_zerolength(cmd);
604 assert_string_is_neither_NULL_nor_zerolength(tt);
605 *pchild_result = 999;
606
607 mr_asprintf(&command, "%s 2>> %s", cmd, MONDO_LOGFILE);
608 mr_msg(3, "command = '%s'", command);
609 if ((res =
610 pthread_create(&childthread, NULL, run_prog_in_bkgd_then_exit,
611 (void *) command))) {
612 fatal_error("Unable to create an archival thread");
613 }
614
615 mr_msg(8, "Parent running");
616 open_evalcall_form(tt);
617 for (sleep(1); command[0] != '\0'; sleep(1)) {
618 pcno = grab_percentage_from_last_line_of_file(MONDO_LOGFILE);
619 if (pcno <= 0 || pcno > 100) {
620 mr_msg(8, "Weird pc#");
621 continue;
622 }
623 percentage = pcno * 100 / maxpc;
624 if (pcno <= 5 && last_pcno >= 40) {
625 close_evalcall_form();
626 open_evalcall_form(_("Verifying..."));
627 }
628 if (counter++ >= 5) {
629 counter = 0;
630 log_file_end_to_screen(MONDO_LOGFILE, "");
631 }
632 last_pcno = pcno;
633 update_evalcall_form(percentage);
634 }
635 mr_free(command);
636
637 log_file_end_to_screen(MONDO_LOGFILE, "");
638 close_evalcall_form();
639 pthread_join(childthread, (void *) (&pchild_result));
640 if (pchild_result) {
641 res = *pchild_result;
642 } else {
643 res = 666;
644 }
645 mr_msg(3, "Parent res = %d", res);
646 return (res);
647}
648
649
650/**
651 * Feed @p input_fifo through ntfsclone (restore) to @p output_device.
652 * @param input_fifo The ntfsclone file to read.
653 * @param output_device Where to put the output.
654 * @return The return value of ntfsclone (0 for success).
655 */
656int feed_outfrom_ntfsprog(char *output_device, char *input_fifo)
657{
658// RESTORE
659 int res = -1;
660 char *command = NULL;
661 char *tmp = NULL;
662
663 tmp = find_home_of_exe("ntfsclone");
664 if (!tmp) {
665 fatal_error("ntfsclone not found");
666 }
667 mr_free(tmp);
668
669 mr_asprintf(&command, "ntfsclone --force --restore-image --overwrite %s %s", output_device, input_fifo);
670 res = run_program_and_log_output(command, 5);
671 mr_free(command);
672 return (res);
673}
Note: See TracBrowser for help on using the repository browser.