source: MondoRescue/trunk/mondo/src/common/libmondo-fork.c@ 1176

Last change on this file since 1176 was 1176, checked in by Bruno Cornec, 17 years ago

Some merges from stable (synchro for mem. mngt)
  • Property svn:keywords set to Id
File size: 18.1 KB
Line 
1/* libmondo-fork.c - subroutines for handling forking/pthreads/etc.
2 * $Id: libmondo-fork.c 1176 2007-02-16 13:16:14Z bruno $
3 */
4#include "my-stuff.h"
5#include "mr_mem.h"
6#include "mr_msg.h"
7#include "mr_str.h"
8
9#include "mondostructures.h"
10#include "libmondo-fork.h"
11#include "libmondo-string-EXT.h"
12#include "newt-specific-EXT.h"
13#include "libmondo-files-EXT.h"
14#include "libmondo-tools-EXT.h"
15
16extern bool g_text_mode;
17pid_t g_buffer_pid = 0;
18
19
20/**
21 * Call a program and retrieve its last line of output.
22 * @param call The program to run.
23 * @return The last line of its output.
24 * @note The returned value should be freed by caller
25 */
26char *call_program_and_get_last_line_of_output(char *call)
27{
28 char *result = NULL;
29 FILE *fin = NULL;
30 size_t n = 0;
31
32 assert_string_is_neither_NULL_nor_zerolength(call);
33
34 if ((fin = popen(call, "r"))) {
35 for (mr_getline(&result, &n, fin); !feof(fin); mr_getline(&result, &n, fin));
36 paranoid_pclose(fin);
37 } else {
38 log_OS_error("Unable to popen call");
39 }
40 return(result);
41}
42
43#define MONDO_POPMSG _("Your PC will not retract the CD tray automatically. Please call mondoarchive with the -m (manual CD tray) flag.")
44
45/**
46 * Call mkisofs to create an ISO image.
47 * @param bkpinfo The backup information structure. Fields used:
48 * - @c bkpinfo->manual_cd_tray
49 * - @c bkpinfo->backup_media_type
50 * - @c bkpinfo->please_dont_eject_when_restoring
51 * @param basic_call The call to mkisofs. May contain tokens that will be resolved to actual data. The tokens are:
52 * - @c _ISO_ will become the ISO file (@p isofile)
53 * - @c _CD#_ becomes the CD number (@p cd_no)
54 * - @c _ERR_ becomes the logfile (@p g_logfile)
55 * @param isofile Replaces @c _ISO_ in @p basic_call. Should probably be the ISO image to create (-o parameter to mkisofs).
56 * @param cd_no Replaces @c _CD#_ in @p basic_call. Should probably be the CD number.
57 * @param logstub Unused.
58 * @param what_i_am_doing The action taking place (e.g. "Making ISO #1"). Used as the title of the progress dialog.
59 * @return Exit code of @c mkisofs (0 is success, anything else indicates failure).
60 * @bug @p logstub is unused.
61 */
62int
63eval_call_to_make_ISO(struct s_bkpinfo *bkpinfo,
64 char *basic_call, char *isofile,
65 int cd_no, char *logstub, char *what_i_am_doing)
66{
67
68 /*@ int's *** */
69 int retval = 0;
70
71
72 /*@ buffers *** */
73 char *midway_call, *ultimate_call, *tmp;
74 char *p = NULL;
75 char *cd_number_str = NULL;
76 char *command = NULL;
77
78
79/*@*********** End Variables ***************************************/
80
81 mr_msg(3, "Starting");
82 assert(bkpinfo != NULL);
83 assert_string_is_neither_NULL_nor_zerolength(basic_call);
84 assert_string_is_neither_NULL_nor_zerolength(isofile);
85 assert_string_is_neither_NULL_nor_zerolength(logstub);
86
87 midway_call = mr_malloc(1200);
88 ultimate_call = mr_malloc(1200);
89 tmp = mr_malloc(1200);
90
91 mr_asprintf(&cd_number_str, "%d", cd_no);
92 resolve_naff_tokens(midway_call, basic_call, isofile, "_ISO_");
93 resolve_naff_tokens(tmp, midway_call, cd_number_str, "_CD#_");
94 mr_free(cd_number_str);
95
96 resolve_naff_tokens(ultimate_call, tmp, MONDO_LOGFILE, "_ERR_");
97 mr_msg(4, "basic call = '%s'", basic_call);
98 mr_msg(4, "midway_call = '%s'", midway_call);
99 mr_msg(4, "tmp = '%s'", tmp);
100 mr_msg(4, "ultimate call = '%s'", ultimate_call);
101 mr_asprintf(&command, "%s >> %s", ultimate_call, MONDO_LOGFILE);
102
103 log_to_screen
104 (_("Please be patient. Do not be alarmed by on-screen inactivity."));
105 mr_msg(4, "Calling open_evalcall_form() with what_i_am_doing='%s'",
106 what_i_am_doing);
107 if (bkpinfo->manual_cd_tray) {
108 /* Find everything after a 2>> and remove it */
109 p = strstr(command, "2>>");
110 if (p) {
111 for (; *p != ' ' && *p != '\0'; p++) {
112 *p = ' ';
113 }
114 }
115#ifndef _XWIN
116 if (!g_text_mode) {
117 newtSuspend();
118 }
119#endif
120 mr_msg(1, "command = '%s'", command);
121 retval += system(command);
122 if (!g_text_mode) {
123 newtResume();
124 }
125 if (retval) {
126 mr_msg(2, "Basic call '%s' returned an error.", basic_call);
127 popup_and_OK(_("Press ENTER to continue."));
128 popup_and_OK
129 (_("mkisofs and/or cdrecord returned an error. CD was not created"));
130 }
131 }
132 /* if text mode then do the above & RETURN; if not text mode, do this... */
133 else {
134 mr_msg(3, "command = '%s'", command);
135// yes_this_is_a_goto:
136 retval =
137 run_external_binary_with_percentage_indicator_NEW
138 (what_i_am_doing, command);
139 }
140 mr_free(command);
141
142 mr_free(midway_call);
143 mr_free(ultimate_call);
144 mr_free(tmp);
145 return (retval);
146}
147
148
149/**
150 * Run a program and log its output (stdout and stderr) to the logfile.
151 * @param program The program to run. Passed to the shell, so you can use pipes etc.
152 * @param debug_level If @p g_loglevel is higher than this, do not log the output.
153 * @return The exit code of @p program (depends on the command, but 0 almost always indicates success).
154 */
155int run_program_and_log_output(char *program, int debug_level)
156{
157 /*@ buffer ****************************************************** */
158 char *callstr = NULL;
159 char *incoming = NULL;
160
161 /*@ int ********************************************************* */
162 int res = 0;
163 size_t n = 0;
164 bool log_if_failure = FALSE;
165 bool log_if_success = FALSE;
166
167 /*@ pointers *************************************************** */
168 FILE *fin = NULL;
169 char *p = NULL;
170
171 /*@ end vars *************************************************** */
172
173 assert(program != NULL);
174 if (!program[0]) {
175 mr_msg(2, "Warning - asked to run zerolength program");
176 return (1);
177 }
178
179 if (debug_level <= g_loglevel) {
180 log_if_success = TRUE;
181 log_if_failure = TRUE;
182 }
183 mr_asprintf(&callstr,
184 "%s > /tmp/mondo-run-prog-thing.tmp 2> /tmp/mondo-run-prog-thing.err",
185 program);
186 while ((p = strchr(callstr, '\r'))) {
187 *p = ' ';
188 }
189 while ((p = strchr(callstr, '\n'))) {
190 *p = ' ';
191 } /* single '=' is intentional */
192
193 res = system(callstr);
194 if (((res == 0) && log_if_success) || ((res != 0) && log_if_failure)) {
195 mr_msg(0, "running: %s", callstr);
196 mr_msg(0,
197 "--------------------------------start of output-----------------------------");
198 }
199 mr_free(callstr);
200
201 if (log_if_failure
202 &&
203 system
204 ("cat /tmp/mondo-run-prog-thing.err >> /tmp/mondo-run-prog-thing.tmp 2> /dev/null"))
205 {
206 log_OS_error("Command failed");
207 }
208 unlink("/tmp/mondo-run-prog-thing.err");
209 fin = fopen("/tmp/mondo-run-prog-thing.tmp", "r");
210 if (fin) {
211 for (mr_getline(&incoming, &n, fin); !feof(fin); 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 mr_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 return (res);
241}
242
243
244/**
245 * Run a program and log its output to the screen.
246 * @param basic_call The program to run.
247 * @param what_i_am_doing The title of the evalcall form.
248 * @return The return value of the command (varies, but 0 almost always means success).
249 * @see run_program_and_log_output
250 * @see log_to_screen
251 */
252int run_program_and_log_to_screen(char *basic_call, char *what_i_am_doing)
253{
254 /*@ int ******************************************************** */
255 int retval = 0;
256 int res = 0;
257 int i;
258
259 /*@ pointers **************************************************** */
260 FILE *fin;
261
262 /*@ buffers **************************************************** */
263 char *tmp = NULL;
264 char *command = NULL;
265 char *lockfile = NULL;
266
267 /*@ end vars *************************************************** */
268
269 assert_string_is_neither_NULL_nor_zerolength(basic_call);
270
271 mr_asprintf(&lockfile, "/tmp/mojo-jojo.blah.XXXXXX");
272 mkstemp(lockfile);
273 mr_asprintf(&command,
274 "echo hi > %s ; %s >> %s 2>> %s; res=$?; sleep 1; rm -f %s; exit $res",
275 lockfile, basic_call, MONDO_LOGFILE, MONDO_LOGFILE, lockfile);
276 open_evalcall_form(what_i_am_doing);
277 mr_asprintf(&tmp, "Executing %s", basic_call);
278 mr_msg(2, tmp);
279 mr_free(tmp);
280
281 if (!(fin = popen(command, "r"))) {
282 log_OS_error("Unable to popen-in command");
283 mr_asprintf(&tmp, _("Failed utterly to call '%s'"), command);
284 log_to_screen(tmp);
285 mr_free(tmp);
286 mr_free(lockfile);
287 mr_free(command);
288 return (1);
289 }
290 mr_free(command);
291
292 if (!does_file_exist(lockfile)) {
293 log_to_screen(_("Waiting for external binary to start"));
294 for (i = 0; i < 60 && !does_file_exist(lockfile); sleep(1), i++) {
295 mr_msg(3, "Waiting for lockfile %s to exist", lockfile);
296 }
297 }
298 /* This works on Newt, and it gives quicker updates. */
299 for (; does_file_exist(lockfile); sleep(1)) {
300 log_file_end_to_screen(MONDO_LOGFILE, "");
301 update_evalcall_form(1);
302 }
303 /* Evaluate the status returned by pclose to get the exit code of the called program. */
304 errno = 0;
305 res = pclose(fin);
306 /* Log actual pclose errors. */
307 if (errno) {
308 mr_msg(5, "pclose err: %d", errno);
309 }
310 /* Check if we have a valid status. If we do, extract the called program's exit code. */
311 /* If we don't, highlight this fact by returning -1. */
312 if (WIFEXITED(res)) {
313 retval = WEXITSTATUS(res);
314 } else {
315 retval = -1;
316 }
317 close_evalcall_form();
318 unlink(lockfile);
319 mr_free(lockfile);
320
321 return (retval);
322}
323
324
325/**
326 * Apparently used. @bug This has a purpose, but what?
327 */
328#define PIMP_START_SZ "STARTSTARTSTART9ff3kff9a82gv34r7fghbkaBBC2T231hc81h42vws8"
329#define PIMP_END_SZ "ENDENDEND0xBBC10xBBC2T231hc81h42vws89ff3kff9a82gv34r7fghbka"
330
331
332
333
334int copy_from_src_to_dest(FILE * f_orig, FILE * f_archived, char direction)
335{
336// if dir=='w' then copy from orig to archived
337// if dir=='r' then copy from archived to orig
338 char *tmp = NULL;
339 char *tmp1 = NULL;
340 char *buf = NULL;
341 long int bytes_to_be_read, bytes_read_in, bytes_written_out =
342 0, bufcap, subsliceno = 0;
343 int retval = 0;
344 FILE *fin = NULL;
345 FILE *fout = NULL;
346 FILE *ftmp = NULL;
347
348 mr_msg(5, "Opening.");
349 bufcap = 256L * 1024L;
350 buf = mr_malloc(bufcap);
351
352 if (direction == 'w') {
353 fin = f_orig;
354 fout = f_archived;
355 mr_asprintf(&tmp1, "%-64s", PIMP_START_SZ);
356 if (fwrite(tmp1, 1, 64, fout) != 64) {
357 fatal_error("Can't write the introductory block");
358 }
359 mr_free(tmp1);
360
361 while (1) {
362 bytes_to_be_read = bytes_read_in = fread(buf, 1, bufcap, fin);
363 if (bytes_read_in == 0) {
364 break;
365 }
366 mr_asprintf(&tmp1, "%-64ld", bytes_read_in);
367 if (fwrite(tmp1, 1, 64, fout) != 64) {
368 fatal_error("Cannot write introductory block");
369 }
370 mr_free(tmp1);
371
372 mr_msg(7,
373 "subslice #%ld --- I have read %ld of %ld bytes in from f_orig",
374 subsliceno, bytes_read_in, bytes_to_be_read);
375 bytes_written_out += fwrite(buf, 1, bytes_read_in, fout);
376 mr_asprintf(&tmp1, "%-64ld", subsliceno);
377 if (fwrite(tmp1, 1, 64, fout) != 64) {
378 fatal_error("Cannot write post-thingy block");
379 }
380 mr_free(tmp1);
381
382 mr_msg(7, "Subslice #%d written OK", subsliceno);
383 subsliceno++;
384 }
385 mr_asprintf(&tmp, "%-64ld", 0L);
386 if (fwrite(tmp, 1, 64L, fout) != 64L) {
387 fatal_error("Cannot write final introductory block");
388 }
389 } else {
390 fin = f_archived;
391 fout = f_orig;
392 tmp = mr_malloc(64L);
393 if (fread(tmp, 1, 64L, fin) != 64L) {
394 fatal_error("Cannot read the introductory block");
395 }
396 mr_msg(5, "tmp is %s", tmp);
397 if (!strstr(tmp, PIMP_START_SZ)) {
398 fatal_error("Can't find intro blk");
399 }
400 if (fread(tmp, 1, 64L, fin) != 64L) {
401 fatal_error("Cannot read introductory blk");
402 }
403 bytes_to_be_read = atol(tmp);
404 while (bytes_to_be_read > 0) {
405 mr_msg(7, "subslice#%ld, bytes=%ld", subsliceno,
406 bytes_to_be_read);
407 bytes_read_in = fread(buf, 1, bytes_to_be_read, fin);
408 if (bytes_read_in != bytes_to_be_read) {
409 fatal_error
410 ("Danger, WIll Robinson. Failed to read whole subvol from archives.");
411 }
412 bytes_written_out += fwrite(buf, 1, bytes_read_in, fout);
413 if (fread(tmp, 1, 64L, fin) != 64L) {
414 fatal_error("Cannot read post-thingy block");
415 }
416 if (atol(tmp) != subsliceno) {
417 mr_msg(1, "Wanted subslice %ld but got %ld ('%s')",
418 subsliceno, atol(tmp), tmp);
419 }
420 mr_msg(7, "Subslice #%ld read OK", subsliceno);
421 subsliceno++;
422 if (fread(tmp, 1, 64L, fin) != 64L) {
423 fatal_error("Cannot read introductory block");
424 }
425 bytes_to_be_read = atol(tmp);
426 }
427 }
428
429// mr_msg(4, "Written %ld of %ld bytes", bytes_written_out, bytes_read_in);
430
431 if (direction == 'w') {
432 mr_asprintf(&tmp1, "%-64s", PIMP_END_SZ);
433 if (fwrite(tmp1, 1, 64L, fout) != 64L) {
434 fatal_error("Can't write the final block");
435 }
436 mr_free(tmp1);
437 } else {
438 mr_msg(1, "tmpA is %s", tmp);
439 if (!strstr(tmp, PIMP_END_SZ)) {
440 if (fread(tmp, 1, 64L, fin) != 64L) {
441 fatal_error("Can't read the final block");
442 }
443 mr_msg(5, "tmpB is %s", tmp);
444 if (!strstr(tmp, PIMP_END_SZ)) {
445 ftmp = fopen("/tmp/out.leftover", "w");
446 bytes_read_in = fread(tmp, 1, 64L, fin);
447 mr_msg(1, "bytes_read_in = %ld", bytes_read_in);
448// if (bytes_read_in!=128+64) { fatal_error("Can't read the terminating block"); }
449 fwrite(tmp, 1, bytes_read_in, ftmp);
450
451 mr_free(tmp);
452 if (!(tmp = malloc(512))) {
453 fatal_error("Failed to malloc() tmp");
454 }
455 /* BERLIOS : strange ???
456 s-printf(tmp, "I am here - %llu", ftello(fin));
457 mr_msg(0, tmp);
458 */
459 fread(tmp, 1, 512, fin);
460 mr_msg(0, "tmp = '%s'", tmp);
461 fwrite(tmp, 1, 512, ftmp);
462 fclose(ftmp);
463 fatal_error("Missing terminating block");
464 }
465 }
466 }
467
468 mr_free(buf);
469 mr_free(tmp);
470 mr_msg(3, "Successfully copied %ld bytes", bytes_written_out);
471 return (retval);
472}
473
474/**
475 * Feed @p input_device through ntfsclone to @p output_fname.
476 * @param input_device The device to image.
477 * @param output_fname The file to write.
478 * @return 0 for success, nonzero for failure.
479 */
480int feed_into_ntfsprog(char *input_device, char *output_fname)
481{
482// BACKUP
483 int res = -1;
484 char *command = NULL;
485 char *tmp = NULL;
486
487 if (!does_file_exist(input_device)) {
488 fatal_error("input device does not exist");
489 }
490 tmp = find_home_of_exe("ntfsclone");
491 if (!tmp) {
492 fatal_error("ntfsclone not found");
493 }
494 mr_free(tmp);
495
496 mr_asprintf(&command, "ntfsclone --force --save-image --overwrite %s %s", output_fname, input_device);
497 res = run_program_and_log_output(command, 5);
498 mr_free(command);
499
500 unlink(output_fname);
501 return (res);
502}
503
504
505int run_external_binary_with_percentage_indicator_OLD(char *tt, char *cmd)
506{
507
508 int res = 0;
509 int percentage = 0;
510 int maxpc = 0;
511 int pcno = 0;
512 int last_pcno = 0;
513
514 char *command = NULL;
515 char *tempfile = NULL;
516 FILE *pin = NULL;
517
518 assert_string_is_neither_NULL_nor_zerolength(cmd);
519
520 tempfile = call_program_and_get_last_line_of_output("mktemp -q /tmp/mondo.XXXXXXXX");
521 mr_asprintf(&command, "%s >> %s 2>> %s; rm -f %s", cmd, tempfile, tempfile,
522 tempfile);
523 mr_msg(3, command);
524 open_evalcall_form(tt);
525
526 if (!(pin = popen(command, "r"))) {
527 log_OS_error("fmt err");
528 mr_free(command);
529 mr_free(tempfile);
530 return (1);
531 }
532 mr_free(command);
533
534 maxpc = 100;
535// OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD
536 for (sleep(1); does_file_exist(tempfile); sleep(1)) {
537 pcno = grab_percentage_from_last_line_of_file(MONDO_LOGFILE);
538 if (pcno < 0 || pcno > 100) {
539 mr_msg(5, "Weird pc#");
540 continue;
541 }
542 percentage = pcno * 100 / maxpc;
543 if (pcno <= 5 && last_pcno > 40) {
544 close_evalcall_form();
545 open_evalcall_form("_(Verifying...");
546 }
547 last_pcno = pcno;
548 update_evalcall_form(percentage);
549 }
550// OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD OLD
551 close_evalcall_form();
552 if (pclose(pin)) {
553 res++;
554 log_OS_error("Unable to pclose");
555 }
556 unlink(tempfile);
557 mr_free(tempfile);
558 return (res);
559}
560
561
562void *run_prog_in_bkgd_then_exit(void *info)
563{
564 char *sz_command;
565 static int res = 4444;
566
567 res = 999;
568 sz_command = (char *) info;
569 mr_msg(4, "sz_command = '%s'", sz_command);
570 res = system(sz_command);
571 if (res > 256 && res != 4444) {
572 res = res / 256;
573 }
574 mr_msg(4, "child res = %d", res);
575 sz_command[0] = '\0';
576 pthread_exit((void *) (&res));
577}
578
579
580int run_external_binary_with_percentage_indicator_NEW(char *tt, char *cmd)
581{
582
583 /*@ int *************************************************************** */
584 int res = 0;
585 int percentage = 0;
586 int maxpc = 100;
587 int pcno = 0;
588 int last_pcno = 0;
589 int counter = 0;
590
591 /*@ buffers *********************************************************** */
592 char *command = NULL;
593 /*@ pointers ********************************************************** */
594 static int chldres = 0;
595 int *pchild_result;
596 pthread_t childthread;
597
598 pchild_result = &chldres;
599 assert_string_is_neither_NULL_nor_zerolength(cmd);
600 assert_string_is_neither_NULL_nor_zerolength(tt);
601 *pchild_result = 999;
602
603 mr_asprintf(&command, "%s 2>> %s", cmd, MONDO_LOGFILE);
604 mr_msg(3, "command = '%s'", command);
605 if ((res =
606 pthread_create(&childthread, NULL, run_prog_in_bkgd_then_exit,
607 (void *) command))) {
608 fatal_error("Unable to create an archival thread");
609 }
610
611 mr_msg(8, "Parent running");
612 open_evalcall_form(tt);
613 for (sleep(1); command[0] != '\0'; sleep(1)) {
614 pcno = grab_percentage_from_last_line_of_file(MONDO_LOGFILE);
615 if (pcno <= 0 || pcno > 100) {
616 mr_msg(8, "Weird pc#");
617 continue;
618 }
619 percentage = pcno * 100 / maxpc;
620 if (pcno <= 5 && last_pcno >= 40) {
621 close_evalcall_form();
622 open_evalcall_form(_("Verifying..."));
623 }
624 if (counter++ >= 5) {
625 counter = 0;
626 log_file_end_to_screen(MONDO_LOGFILE, "");
627 }
628 last_pcno = pcno;
629 update_evalcall_form(percentage);
630 }
631 mr_free(command);
632
633 log_file_end_to_screen(MONDO_LOGFILE, "");
634 close_evalcall_form();
635 pthread_join(childthread, (void *) (&pchild_result));
636 if (pchild_result) {
637 res = *pchild_result;
638 } else {
639 res = 666;
640 }
641 mr_msg(3, "Parent res = %d", res);
642 return (res);
643}
644
645
646/**
647 * Feed @p input_fifo through ntfsclone (restore) to @p output_device.
648 * @param input_fifo The ntfsclone file to read.
649 * @param output_device Where to put the output.
650 * @return The return value of ntfsclone (0 for success).
651 */
652int feed_outfrom_ntfsprog(char *output_device, char *input_fifo)
653{
654// RESTORE
655 int res = -1;
656 char *command = NULL;
657 char *tmp = NULL;
658
659 tmp = find_home_of_exe("ntfsclone");
660 if (!tmp) {
661 fatal_error("ntfsclone not found");
662 }
663 mr_free(tmp);
664
665 mr_asprintf(&command, "ntfsclone --force --restore-image --overwrite %s %s", output_device, input_fifo);
666 res = run_program_and_log_output(command, 5);
667 mr_free(command);
668 return (res);
669}
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