3 * dvd.c -- Routines specific to DVD devices (and
4 * possibly other removable hard media).
11 Copyright (C) 2005-2006 Kern Sibbald
13 This program is free software; you can redistribute it and/or
14 modify it under the terms of the GNU General Public License
15 version 2 as amended with additional clauses defined in the
16 file LICENSE in the main source directory.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 the file LICENSE for additional details.
28 /* Forward referenced functions */
29 static bool do_mount_dvd(DEVICE* dev, int mount, int dotimeout);
30 static void add_file_and_part_name(DEVICE *dev, POOL_MEM &archive_name);
33 * Write the current volume/part filename to archive_name.
35 void make_mounted_dvd_filename(DEVICE *dev, POOL_MEM &archive_name)
37 pm_strcpy(archive_name, dev->device->mount_point);
38 add_file_and_part_name(dev, archive_name);
39 dev->set_part_spooled(false);
42 void make_spooled_dvd_filename(DEVICE *dev, POOL_MEM &archive_name)
44 /* Use the working directory if spool directory is not defined */
45 if (dev->device->spool_directory) {
46 pm_strcpy(archive_name, dev->device->spool_directory);
48 pm_strcpy(archive_name, working_directory);
50 add_file_and_part_name(dev, archive_name);
51 dev->set_part_spooled(true);
54 static void add_file_and_part_name(DEVICE *dev, POOL_MEM &archive_name)
57 if (archive_name.c_str()[strlen(archive_name.c_str())-1] != '/') {
58 pm_strcat(archive_name, "/");
61 pm_strcat(archive_name, dev->VolCatInfo.VolCatName);
62 /* if part > 1, append .# to the filename (where # is the part number) */
64 pm_strcat(archive_name, ".");
65 bsnprintf(partnumber, sizeof(partnumber), "%d", dev->part);
66 pm_strcat(archive_name, partnumber);
68 Dmsg1(400, "Exit add_file_part_name: arch=%s\n", archive_name.c_str());
72 * If timeout, wait until the mount command returns 0.
73 * If !timeout, try to mount the device only once.
75 bool mount_dvd(DEVICE* dev, int timeout)
77 Dmsg0(90, "Enter mount_dvd\n");
78 if (dev->is_mounted()) {
80 } else if (dev->requires_mount()) {
81 return do_mount_dvd(dev, 1, timeout);
87 * If timeout, wait until the unmount command returns 0.
88 * If !timeout, try to unmount the device only once.
90 bool unmount_dvd(DEVICE *dev, int timeout)
95 Dmsg0(90, "Enter unmount_dvd\n");
96 if (dev->is_mounted()) {
97 return do_mount_dvd(dev, 0, timeout);
102 /* (Un)mount the device */
103 static bool do_mount_dvd(DEVICE* dev, int mount, int dotimeout)
105 POOL_MEM ocmd(PM_FNAME);
110 sm_check(__FILE__, __LINE__, false);
112 if (dev->is_mounted()) {
113 Dmsg0(200, "======= DVD mount=1\n");
116 icmd = dev->device->mount_command;
118 if (!dev->is_mounted()) {
119 Dmsg0(200, "======= DVD mount=0\n");
122 icmd = dev->device->unmount_command;
125 dev->edit_mount_codes(ocmd, icmd);
127 Dmsg2(200, "do_mount_dvd: cmd=%s mounted=%d\n", ocmd.c_str(), !!dev->is_mounted());
130 /* Try at most 1 time to (un)mount the device. This should perhaps be configurable. */
135 results = get_memory(2000);
137 /* If busy retry each second */
138 Dmsg1(20, "Run mount prog=%s\n", ocmd.c_str());
139 while ((status = run_program_full_output(ocmd.c_str(),
140 dev->max_open_wait/2, results)) != 0) {
141 Dmsg2(20, "Mount status=%d result=%s\n", status, results);
142 /* Doesn't work with internationalization (This is not a problem) */
143 if (mount && fnmatch("*is already mounted on*", results, 0) == 0) {
146 if (!mount && fnmatch("* not mounted*", results, 0) == 0) {
150 /* Sometimes the device cannot be mounted because it is already mounted.
151 * Try to unmount it, then remount it */
153 Dmsg1(400, "Trying to unmount the device %s...\n", dev->print_name());
154 do_mount_dvd(dev, 0, 0);
161 Dmsg5(40, "Device %s cannot be %smounted. stat=%d result=%s ERR=%s\n", dev->print_name(),
162 (mount ? "" : "un"), status, results, be.strerror(status));
163 Mmsg(dev->errmsg, _("Device %s cannot be %smounted. ERR=%s\n"),
164 dev->print_name(), (mount ? "" : "un"), be.strerror(status));
166 Dmsg4(40, "Device %s cannot be %smounted. stat=%d ERR=%s\n", dev->print_name(),
167 (mount ? "" : "un"), status, results);
168 Mmsg(dev->errmsg, _("Device %s cannot be %smounted. ERR=%s\n"),
169 dev->print_name(), (mount ? "" : "un"), results);
172 * Now, just to be sure it is not mounted, try to read the
176 struct dirent *entry, *result;
180 name_max = pathconf(".", _PC_NAME_MAX);
181 if (name_max < 1024) {
185 if (!(dp = opendir(dev->device->mount_point))) {
187 dev->dev_errno = errno;
188 Dmsg3(29, "do_mount_dvd: failed to open dir %s (dev=%s), ERR=%s\n",
189 dev->device->mount_point, dev->print_name(), be.strerror());
193 entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
196 if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
197 dev->dev_errno = EIO;
198 Dmsg2(129, "do_mount_dvd: failed to find suitable file in dir %s (dev=%s)\n",
199 dev->device->mount_point, dev->print_name());
202 if (strcmp(result->d_name, ".") && strcmp(result->d_name, "..") &&
203 strcmp(result->d_name, ".keep")) {
204 count++; /* result->d_name != ., .. or .keep (Gentoo-specific) */
205 Dmsg1(100, "Inc count=%d\n", count);
208 Dmsg2(129, "do_mount_dvd: ignoring %s in %s\n",
209 result->d_name, dev->device->mount_point);
215 Dmsg1(29, "do_mount_dvd: got %d files in the mount point (not counting ., .. and .keep)\n", count);
218 /* If we got more than ., .. and .keep */
219 /* there must be something mounted */
221 Dmsg1(100, "Did Mount by count=%d\n", count);
224 /* An unmount request. We failed to unmount - report an error */
225 dev->set_mounted(true);
226 free_pool_memory(results);
227 Dmsg0(200, "== DVD mount=1\n");
232 dev->set_mounted(false);
233 sm_check(__FILE__, __LINE__, false);
234 free_pool_memory(results);
235 Dmsg0(200, "== DVD mount=0\n");
238 Dmsg0(100, "Out of mount/umount loop\n");
240 dev->set_mounted(mount); /* set/clear mounted flag */
241 free_pool_memory(results);
242 /* Do not check free space when unmounting */
244 Dmsg0(100, "Calling update_free_space\n");
245 if (!update_free_space_dev(dev)) {
249 Dmsg1(200, "== DVD mount=%d\n", mount);
253 /* Update the free space on the device */
254 bool update_free_space_dev(DEVICE* dev)
256 POOL_MEM ocmd(PM_FNAME);
265 if (!dev->is_dvd() || dev->is_freespace_ok()) {
269 /* The device must be mounted in order to dvd-freespace to work */
272 sm_check(__FILE__, __LINE__, false);
273 icmd = dev->device->free_space_command;
277 dev->free_space_errno = 0;
278 dev->clear_freespace_ok(); /* No valid freespace */
280 Dmsg2(29, "ERROR: update_free_space_dev: free_space=%s, free_space_errno=%d (!icmd)\n",
281 edit_uint64(dev->free_space, ed1), dev->free_space_errno);
282 Mmsg(dev->errmsg, _("No FreeSpace command defined.\n"));
286 dev->edit_mount_codes(ocmd, icmd);
288 Dmsg1(29, "update_free_space_dev: cmd=%s\n", ocmd.c_str());
290 results = get_pool_memory(PM_MESSAGE);
292 /* Try at most 3 times to get the free space on the device. This should perhaps be configurable. */
297 Dmsg1(20, "Run freespace prog=%s\n", ocmd.c_str());
298 status = run_program_full_output(ocmd.c_str(), dev->max_open_wait/2, results);
299 Dmsg2(20, "Freespace status=%d result=%s\n", status, results);
301 free = str_to_int64(results);
302 Dmsg1(400, "Free space program run: Freespace=%s\n", results);
304 dev->free_space = free;
305 dev->free_space_errno = 0;
306 dev->set_freespace_ok(); /* have valid freespace */
308 Mmsg(dev->errmsg, "");
314 dev->free_space_errno = EPIPE;
315 dev->clear_freespace_ok(); /* no valid freespace */
316 Mmsg2(dev->errmsg, _("Cannot run free space command. Results=%s ERR=%s\n"),
317 results, be.strerror(status));
320 Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
321 "free_space_errno=%d ERR=%s\n", dev->print_name(),
322 edit_uint64(dev->free_space, ed1), dev->free_space_errno,
328 dev->dev_errno = dev->free_space_errno;
329 Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
330 "free_space_errno=%d ERR=%s\n",
331 dev->print_name(), edit_uint64(dev->free_space, ed1),
332 dev->free_space_errno, dev->errmsg);
336 free_pool_memory(results);
337 Dmsg4(29, "leave update_free_space_dev: free_space=%s freespace_ok=%d free_space_errno=%d have_media=%d\n",
338 edit_uint64(dev->free_space, ed1), !!dev->is_freespace_ok(), dev->free_space_errno, !!dev->have_media());
339 sm_check(__FILE__, __LINE__, false);
344 * Note!!!! Part numbers now begin at 1. The part number is
345 * suppressed from the first part, which is just the Volume
346 * name. Each subsequent part is the Volumename.partnumber.
348 * Write a part (Vol, Vol.2, ...) from the spool to the DVD
349 * This routine does not update the part number, so normally, you
350 * should call open_next_part()
352 * It is also called from truncate_dvd to "blank" the medium, as
353 * well as from block.c when the DVD is full to write the last part.
355 bool dvd_write_part(DCR *dcr)
357 DEVICE *dev = dcr->dev;
358 POOL_MEM archive_name(PM_FNAME);
360 dev->clear_freespace_ok(); /* need to update freespace */
362 /* Don't write empty part files.
363 * This is only useful when growisofs does not support write beyond
366 * - 3.9 GB on the volume, dvd-freespace reports 0.4 GB free
367 * - Write 0.2 GB on the volume, Bacula thinks it could still
368 * append data, it creates a new empty part.
369 * - dvd-freespace reports 0 GB free, as the 4GB boundary has
371 * - Bacula thinks he must finish to write to the device, so it
372 * tries to write the last part (0-byte), but dvd-writepart fails...
374 * ***FIXME**** we cannot write a blank part!!!!!!!
375 * There is one exception: when recycling a volume, we write a blank part
376 * file, so, then, we need to accept to write it.
378 if (dev->part_size == 0) {
379 Dmsg2(29, "dvd_write_part: device is %s, won't write blank part %d\n", dev->print_name(), dev->part);
380 /* Delete spool file */
381 make_spooled_dvd_filename(dev, archive_name);
382 unlink(archive_name.c_str());
383 Dmsg1(29, "unlink(%s)\n", archive_name.c_str());
384 sm_check(__FILE__, __LINE__, false);
388 POOL_MEM ocmd(PM_FNAME);
389 POOL_MEM results(PM_MESSAGE);
395 sm_check(__FILE__, __LINE__, false);
396 Dmsg3(29, "dvd_write_part: device is %s, part is %d, is_mounted=%d\n", dev->print_name(), dev->part, dev->is_mounted());
397 icmd = dev->device->write_part_command;
399 dev->edit_mount_codes(ocmd, icmd);
402 * original line follows
403 * timeout = dev->max_open_wait + (dev->max_part_size/(1350*1024/2));
404 * I modified this for a longer timeout; pre-formatting, blanking and
405 * writing can take quite a while
408 /* Explanation of the timeout value, when writing the first part,
410 * 9 GB, write speed 1x: 6990 seconds (almost 2 hours...)
411 * Overhead: 900 seconds (starting, initializing, finalizing,probably
412 * reloading 15 minutes)
414 * A reasonable last-exit timeout would be 16000 seconds. Quite long -
415 * almost 4.5 hours, but hopefully, that timeout will only ever be needed
416 * in case of a serious emergency.
419 if (dev->part == 1) {
422 timeout = dev->max_open_wait + (dev->part_size/(1350*1024/4));
425 Dmsg2(20, "Write part: cmd=%s timeout=%d\n", ocmd.c_str(), timeout);
426 status = run_program_full_output(ocmd.c_str(), timeout, results.c_str());
427 Dmsg2(20, "Write part status=%d result=%s\n", status, results.c_str());
429 dev->truncated_dvd = false;
431 Jmsg2(dcr->jcr, M_FATAL, 0, _("Error writing part %d to the DVD: ERR=%s\n"),
432 dev->part, results.c_str());
433 Mmsg1(dev->errmsg, _("Error while writing current part to the DVD: %s"),
435 Dmsg1(000, "%s\n", dev->errmsg);
436 dev->dev_errno = EIO;
437 mark_volume_in_error(dcr);
438 sm_check(__FILE__, __LINE__, false);
441 Jmsg(dcr->jcr, M_INFO, 0, _("Part %d written to DVD.\n"), dev->part);
442 Dmsg2(400, "dvd_write_part: Part %d written to DVD\nResults: %s\n",
443 dev->part, results.c_str());
445 dev->num_dvd_parts++; /* there is now one more part on DVD */
446 dev->VolCatInfo.VolCatParts = dev->num_dvd_parts;
447 Dmsg1(000, "Update num_parts=%d\n", dev->num_dvd_parts);
449 /* Delete spool file */
450 make_spooled_dvd_filename(dev, archive_name);
451 unlink(archive_name.c_str());
452 Dmsg1(29, "unlink(%s)\n", archive_name.c_str());
453 sm_check(__FILE__, __LINE__, false);
455 /* growisofs umounted the device, so remount it (it will update the free space) */
456 dev->clear_mounted();
458 Jmsg(dcr->jcr, M_INFO, 0, _("Remaining free space %s on %s\n"),
459 edit_uint64_with_commas(dev->free_space, ed1), dev->print_name());
460 sm_check(__FILE__, __LINE__, false);
465 * Open the next part file.
467 * - Increment part number
468 * - Reopen the device
470 int dvd_open_next_part(DCR *dcr)
472 DEVICE *dev = dcr->dev;
474 Dmsg6(29, "Enter: == open_next_part part=%d npart=%d dev=%s vol=%s mode=%d file_addr=%d\n",
475 dev->part, dev->num_dvd_parts, dev->print_name(),
476 dev->VolCatInfo.VolCatName, dev->openmode, dev->file_addr);
477 if (!dev->is_dvd()) {
478 Dmsg1(000, "Device %s is not dvd!!!!\n", dev->print_name());
482 /* When appending, do not open a new part if the current is empty */
483 if (dev->can_append() && (dev->part > dev->num_dvd_parts) &&
484 (dev->part_size == 0)) {
485 Dmsg0(29, "open_next_part exited immediately (dev->part_size == 0).\n");
489 dev->close_part(dcr); /* close current part */
492 * If we have a spooled part open, write it to the
493 * DVD before opening the next part.
495 if (dev->is_part_spooled()) {
496 Dmsg2(100, "Before open next write previous. part=%d num_parts=%d\n",
497 dev->part, dev->num_dvd_parts);
498 if (!dvd_write_part(dcr)) {
499 Dmsg0(29, "Error in dvd_write part.\n");
504 dev->part_start += dev->part_size;
506 Dmsg2(29, "Inc part=%d num_dvd_parts=%d\n", dev->part, dev->num_dvd_parts);
508 /* Are we working on a part past what is written in the DVD? */
509 if (dev->num_dvd_parts < dev->part) {
510 POOL_MEM archive_name(PM_FNAME);
513 * First check what is on DVD. If our part is there, we
514 * are in trouble, so bail out.
515 * NB: This is however not a problem if we are writing the first part.
516 * It simply means that we are over writing an existing volume...
518 if (dev->num_dvd_parts > 0) {
519 make_mounted_dvd_filename(dev, archive_name); /* makes dvd name */
520 Dmsg1(100, "Check if part on DVD: %s\n", archive_name.c_str());
521 if (stat(archive_name.c_str(), &buf) == 0) {
522 /* bad news bail out */
523 Mmsg1(&dev->errmsg, _("Next Volume part already exists on DVD. Cannot continue: %s\n"),
524 archive_name.c_str());
530 Dmsg2(400, "num_dvd_parts=%d part=%d\n", dev->num_dvd_parts, dev->part);
531 make_spooled_dvd_filename(dev, archive_name); /* makes spool name */
533 /* Check if the next part exists in spool directory . */
534 Dmsg1(100, "Check if part on spool: %s\n", archive_name.c_str());
535 if ((stat(archive_name.c_str(), &buf) == 0) || (errno != ENOENT)) {
536 Dmsg1(29, "======= Part %s is in the way, deleting it...\n", archive_name.c_str());
537 /* Then try to unlink it */
538 if (unlink(archive_name.c_str()) < 0) {
540 dev->dev_errno = errno;
541 Mmsg2(dev->errmsg, _("open_next_part can't unlink existing part %s, ERR=%s\n"),
542 archive_name.c_str(), be.strerror());
549 Dmsg2(400, "Call dev->open(vol=%s, mode=%d)\n", dcr->VolCatInfo.VolCatName,
552 /* Open next part. Note, this sets part_size for part opened. */
553 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
556 dev->set_labeled(); /* all next parts are "labeled" */
562 * Open the first part file.
564 * - Reopen the device
566 int dvd_open_first_part(DCR *dcr, int mode)
568 DEVICE *dev = dcr->dev;
570 Dmsg5(29, "Enter: ==== open_first_part dev=%s Vol=%s mode=%d num_dvd_parts=%d append=%d\n", dev->print_name(),
571 dev->VolCatInfo.VolCatName, dev->openmode, dev->num_dvd_parts, dev->can_append());
574 dev->close_part(dcr);
576 Dmsg2(400, "Call dev->open(vol=%s, mode=%d)\n", dcr->VolCatInfo.VolCatName,
578 Dmsg0(100, "Set part=1\n");
582 if (dev->open(dcr, mode) < 0) {
583 Dmsg0(400, "open dev() failed\n");
586 Dmsg2(400, "Leave open_first_part state=%s append=%d\n", dev->is_open()?"open":"not open", dev->can_append());
592 /* Protected version of lseek, which opens the right part if necessary */
593 off_t lseek_dev(DEVICE *dev, off_t offset, int whence)
597 char ed1[50], ed2[50];
599 Dmsg5(400, "Enter lseek_dev fd=%d off=%s w=%d part=%d nparts=%d\n", dev->fd,
600 edit_int64(offset, ed1), whence, dev->part, dev->num_dvd_parts);
601 if (!dev->is_dvd()) {
602 Dmsg0(400, "Using sys lseek\n");
603 return lseek(dev->fd, offset, whence);
606 dcr = (DCR *)dev->attached_dcrs->first(); /* any dcr will do */
609 Dmsg2(400, "lseek_dev SEEK_SET to %s (part_start=%s)\n",
610 edit_int64(offset, ed1), edit_uint64(dev->part_start, ed2));
611 if ((uint64_t)offset >= dev->part_start) {
612 if ((uint64_t)offset == dev->part_start ||
613 (uint64_t)offset < dev->part_start+dev->part_size) {
614 /* We are staying in the current part, just seek */
615 if ((pos = lseek(dev->fd, offset-dev->part_start, SEEK_SET)) < 0) {
618 return pos + dev->part_start;
621 /* Load next part, and start again */
622 Dmsg0(100, "lseek open next part\n");
623 if (dvd_open_next_part(dcr) < 0) {
624 Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
627 Dmsg2(100, "Recurse lseek after open next part=%d num_part=%d\n",
628 dev->part, dev->num_dvd_parts);
629 return lseek_dev(dev, offset, SEEK_SET);
633 * pos < dev->part_start :
634 * We need to access a previous part,
635 * so just load the first one, and seek again
636 * until the right one is loaded
638 Dmsg0(100, "lseek open first part\n");
639 if (dvd_open_first_part(dcr, dev->openmode) < 0) {
640 Dmsg0(400, "lseek_dev failed while trying to open the first part\n");
643 Dmsg2(100, "Recurse lseek after open first part=%d num_part=%d\n",
644 dev->part, dev->num_dvd_parts);
645 return lseek_dev(dev, offset, SEEK_SET);
649 Dmsg1(400, "lseek_dev SEEK_CUR to %s\n", edit_int64(offset, ed1));
650 if ((pos = lseek(dev->fd, (off_t)0, SEEK_CUR)) < 0) {
651 Dmsg0(400, "Seek error.\n");
654 pos += dev->part_start;
656 Dmsg1(400, "lseek_dev SEEK_CUR returns %s\n", edit_uint64(pos, ed1));
659 Dmsg1(400, "do lseek_dev SEEK_SET %s\n", edit_uint64(pos, ed1));
660 return lseek_dev(dev, pos, SEEK_SET);
664 Dmsg1(400, "lseek_dev SEEK_END to %s\n", edit_int64(offset, ed1));
666 * Bacula does not use offsets for SEEK_END
667 * Also, Bacula uses seek_end only when it wants to
668 * append to the volume, so for a dvd that means
669 * that the volume must be spooled since the DVD
670 * itself is read-only (as currently implemented).
672 if (offset > 0) { /* Not used by bacula */
673 Dmsg1(400, "lseek_dev SEEK_END called with an invalid offset %s\n",
674 edit_uint64(offset, ed1));
678 /* If we are already on a spooled part and have the
679 * right part number, simply seek
681 if (dev->is_part_spooled() && dev->part > dev->num_dvd_parts) {
682 if ((pos = lseek(dev->fd, (off_t)0, SEEK_END)) < 0) {
685 Dmsg1(400, "lseek_dev SEEK_END returns %s\n",
686 edit_uint64(pos + dev->part_start, ed1));
687 return pos + dev->part_start;
691 * Load the first part, then load the next until we reach the last one.
692 * This is the only way to be sure we compute the right file address.
694 * Save previous openmode, and open all but last part read-only
697 int modesave = dev->openmode;
698 if (dvd_open_first_part(dcr, OPEN_READ_ONLY) < 0) {
699 Dmsg0(400, "lseek_dev failed while trying to open the first part\n");
702 if (dev->num_dvd_parts > 0) {
703 while (dev->part < dev->num_dvd_parts) {
704 if (dvd_open_next_part(dcr) < 0) {
705 Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
709 dev->openmode = modesave;
710 if (dvd_open_next_part(dcr) < 0) {
711 Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
715 return lseek_dev(dev, 0, SEEK_END);
719 Dmsg0(400, "Seek call error.\n");
725 bool dvd_close_job(DCR *dcr)
727 DEVICE *dev = dcr->dev;
732 * If the device is a dvd and WritePartAfterJob
733 * is set to yes, open the next part, so, in case of a device
734 * that requires mount, it will be written to the device.
736 if (dev->is_dvd() && jcr->write_part_after_job && (dev->part_size > 0)) {
737 Dmsg1(400, "Writing last part=%d write_partafter_job is set.\n",
739 if (dev->part < dev->num_dvd_parts+1) {
740 Jmsg3(jcr, M_FATAL, 0, _("Error writing. Current part less than total number of parts (%d/%d, device=%s)\n"),
741 dev->part, dev->num_dvd_parts, dev->print_name());
742 dev->dev_errno = EIO;
746 if (ok && !dvd_write_part(dcr)) {
747 Jmsg2(jcr, M_FATAL, 0, _("Unable to write last on %s: ERR=%s\n"),
748 dev->print_name(), dev->bstrerror());
749 dev->dev_errno = EIO;
756 bool truncate_dvd(DCR *dcr)
758 DEVICE* dev = dcr->dev;
760 dev->close_part(dcr);
762 if (!unmount_dvd(dev, 1)) {
763 Dmsg0(400, "truncate_dvd: Failed to unmount DVD\n");
767 /* Set num_dvd_parts to zero (on disk) */
768 dev->num_dvd_parts = 0;
769 dcr->VolCatInfo.VolCatParts = 0;
770 dev->VolCatInfo.VolCatParts = 0;
772 Dmsg0(400, "truncate_dvd: Opening first part (1)...\n");
774 dev->truncating = true;
775 if (dvd_open_first_part(dcr, CREATE_READ_WRITE) < 0) {
776 Dmsg0(400, "truncate_dvd: Error while opening first part (1).\n");
777 dev->truncating = false;
781 Dmsg0(400, "truncate_dvd: Truncating...\n");
783 /* If necessary, truncate it spool file. */
784 if (ftruncate(dev->fd, 0) != 0) {
786 Mmsg2(dev->errmsg, _("Unable to truncate device %s. ERR=%s\n"),
787 dev->print_name(), be.strerror());
788 dev->truncating = false;
792 dev->close_part(dcr);
794 Dmsg0(400, "truncate_dvd: Opening first part (2)...\n");
797 * Now actually truncate the DVD
798 * This is really kludgy, why not an argument or a separate
801 if (!dvd_write_part(dcr)) {
802 Dmsg0(400, "truncate_dvd: Error while writing to DVD.\n");
803 dev->truncating = false;
806 dev->truncating = false;
808 /* Set num_dvd_parts to zero (on disk) */
809 dev->num_dvd_parts = 0;
810 dcr->VolCatInfo.VolCatParts = 0;
811 dev->VolCatInfo.VolCatParts = 0;
814 if (!dir_update_volume_info(dcr, false)) {
818 if (dvd_open_first_part(dcr, OPEN_READ_WRITE) < 0) {
819 Dmsg0(400, "truncate_dvd: Error while opening first part (2).\n");
826 /* Checks if we can write on a non-blank DVD: meaning that it just have been
827 * truncated (there is only one zero-sized file on the DVD, with the right
830 * Note! Normally if we can mount the device, which should be the case
831 * when we get here, it is not a blank DVD. Hence we check if
832 * there is a zero length file with the right name, in which case
834 * This seems terribly kludgie to me. KES
836 bool check_can_write_on_non_blank_dvd(DCR *dcr)
838 DEVICE* dev = dcr->dev;
840 struct dirent *entry, *result;
844 struct stat filestat;
846 name_max = pathconf(".", _PC_NAME_MAX);
847 if (name_max < 1024) {
851 if (!(dp = opendir(dev->device->mount_point))) {
853 dev->dev_errno = errno;
854 Dmsg3(29, "check_can_write_on_non_blank_dvd: failed to open dir %s (dev=%s), ERR=%s\n",
855 dev->device->mount_point, dev->print_name(), be.strerror());
859 entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
861 if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
862 dev->dev_errno = EIO;
863 Dmsg2(129, "check_can_write_on_non_blank_dvd: no more files in dir %s (dev=%s)\n",
864 dev->device->mount_point, dev->print_name());
867 Dmsg2(99, "check_can_write_on_non_blank_dvd: found %s (versus %s)\n",
868 result->d_name, dev->VolCatInfo.VolCatName);
869 if (strcmp(result->d_name, dev->VolCatInfo.VolCatName) == 0) {
870 /* Found the file, checking it is empty */
871 POOL_MEM filename(PM_FNAME);
872 pm_strcpy(filename, dev->device->mount_point);
873 if (filename.c_str()[strlen(filename.c_str())-1] != '/') {
874 pm_strcat(filename, "/");
876 pm_strcat(filename, dev->VolCatInfo.VolCatName);
877 if (stat(filename.c_str(), &filestat) < 0) {
879 dev->dev_errno = errno;
880 Dmsg2(29, "check_can_write_on_non_blank_dvd: cannot stat file (file=%s), ERR=%s\n",
881 filename.c_str(), be.strerror());
884 Dmsg2(99, "check_can_write_on_non_blank_dvd: size of %s is %lld\n",
885 filename.c_str(), filestat.st_size);
886 matched = filestat.st_size == 0;
895 /* There are more than 3 files (., .., and the volume file) */
896 Dmsg1(29, "Cannot write on blank DVD too many files %d greater than 3\n", count);
900 Dmsg2(29, "OK can_write_on_non_blank_dvd: got %d files in the mount point (matched=%d)\n", count, matched);