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(100, "Run 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(99, "Mount status=%d result=%s\n", status, results);
142 /* Doesn't work with internationalisation (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 /* The device must be mounted in order to dvd-freespace to work */
268 sm_check(__FILE__, __LINE__, false);
269 icmd = dev->device->free_space_command;
273 dev->free_space_errno = 0;
274 dev->clear_freespace_ok(); /* No valid freespace */
276 Dmsg2(29, "ERROR: update_free_space_dev: free_space=%s, free_space_errno=%d (!icmd)\n",
277 edit_uint64(dev->free_space, ed1), dev->free_space_errno);
278 Mmsg(dev->errmsg, _("No FreeSpace command defined.\n"));
282 dev->edit_mount_codes(ocmd, icmd);
284 Dmsg1(29, "update_free_space_dev: cmd=%s\n", ocmd.c_str());
286 results = get_pool_memory(PM_MESSAGE);
288 /* Try at most 3 times to get the free space on the device. This should perhaps be configurable. */
293 Dmsg1(100, "Run prog=%s\n", ocmd.c_str());
294 status = run_program_full_output(ocmd.c_str(), dev->max_open_wait/2, results);
296 free = str_to_int64(results);
297 Dmsg1(400, "Free space program run: Freespace=%s\n", results);
299 dev->free_space = free;
300 dev->free_space_errno = 0;
301 dev->set_freespace_ok(); /* have valid freespace */
303 Mmsg(dev->errmsg, "");
309 dev->free_space_errno = EPIPE;
310 dev->clear_freespace_ok(); /* no valid freespace */
311 Mmsg2(dev->errmsg, _("Cannot run free space command. Results=%s ERR=%s\n"),
312 results, be.strerror(status));
315 Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
316 "free_space_errno=%d ERR=%s\n", dev->print_name(),
317 edit_uint64(dev->free_space, ed1), dev->free_space_errno,
323 dev->dev_errno = dev->free_space_errno;
324 Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
325 "free_space_errno=%d ERR=%s\n",
326 dev->print_name(), edit_uint64(dev->free_space, ed1),
327 dev->free_space_errno, dev->errmsg);
331 free_pool_memory(results);
332 Dmsg4(29, "leave update_free_space_dev: free_space=%s freespace_ok=%d free_space_errno=%d have_media=%d\n",
333 edit_uint64(dev->free_space, ed1), !!dev->is_freespace_ok(), dev->free_space_errno, !!dev->have_media());
334 sm_check(__FILE__, __LINE__, false);
339 * Note!!!! Part numbers now begin at 1. The part number is
340 * suppressed from the first part, which is just the Volume
341 * name. Each subsequent part is the Volumename.partnumber.
343 * Write a part (Vol, Vol.2, ...) from the spool to the DVD
344 * This routine does not update the part number, so normally, you
345 * should call open_next_part()
347 * It is also called from truncate_dvd to "blank" the medium, as
348 * well as from block.c when the DVD is full to write the last part.
350 bool dvd_write_part(DCR *dcr)
352 DEVICE *dev = dcr->dev;
353 POOL_MEM archive_name(PM_FNAME);
355 /* Don't write empty part files.
356 * This is only useful when growisofs does not support write beyond
359 * - 3.9 GB on the volume, dvd-freespace reports 0.4 GB free
360 * - Write 0.2 GB on the volume, Bacula thinks it could still
361 * append data, it creates a new empty part.
362 * - dvd-freespace reports 0 GB free, as the 4GB boundary has
364 * - Bacula thinks he must finish to write to the device, so it
365 * tries to write the last part (0-byte), but dvd-writepart fails...
367 * ***FIXME**** we cannot write a blank part!!!!!!!
368 * There is one exception: when recycling a volume, we write a blank part
369 * file, so, then, we need to accept to write it.
371 if (dev->part_size == 0) {
372 Dmsg2(29, "dvd_write_part: device is %s, won't write blank part %d\n", dev->print_name(), dev->part);
373 /* Delete spool file */
374 make_spooled_dvd_filename(dev, archive_name);
375 unlink(archive_name.c_str());
376 Dmsg1(29, "unlink(%s)\n", archive_name.c_str());
377 sm_check(__FILE__, __LINE__, false);
381 POOL_MEM ocmd(PM_FNAME);
382 POOL_MEM results(PM_MESSAGE);
388 sm_check(__FILE__, __LINE__, false);
389 Dmsg3(29, "dvd_write_part: device is %s, part is %d, is_mounted=%d\n", dev->print_name(), dev->part, dev->is_mounted());
390 icmd = dev->device->write_part_command;
392 dev->edit_mount_codes(ocmd, icmd);
395 * original line follows
396 * timeout = dev->max_open_wait + (dev->max_part_size/(1350*1024/2));
397 * I modified this for a longer timeout; pre-formatting, blanking and
398 * writing can take quite a while
401 /* Explanation of the timeout value, when writing the first part,
403 * 9 GB, write speed 1x: 6990 seconds (almost 2 hours...)
404 * Overhead: 900 seconds (starting, initializing, finalizing,probably
405 * reloading 15 minutes)
407 * A reasonable last-exit timeout would be 16000 seconds. Quite long -
408 * almost 4.5 hours, but hopefully, that timeout will only ever be needed
409 * in case of a serious emergency.
415 timeout = dev->max_open_wait + (dev->part_size/(1350*1024/4));
417 Dmsg2(29, "dvd_write_part: cmd=%s timeout=%d\n", ocmd.c_str(), timeout);
419 status = run_program_full_output(ocmd.c_str(), timeout, results.c_str());
422 Jmsg2(dcr->jcr, M_FATAL, 0, _("Error writing part %d to the DVD: ERR=%s\n"),
423 dev->part, results.c_str());
424 Mmsg1(dev->errmsg, _("Error while writing current part to the DVD: %s"),
426 Dmsg1(000, "%s\n", dev->errmsg);
427 dev->dev_errno = EIO;
428 mark_volume_in_error(dcr);
429 sm_check(__FILE__, __LINE__, false);
430 dev->truncated_dvd = false;
433 Jmsg(dcr->jcr, M_INFO, 0, _("Part %d written to DVD.\n"), dev->part);
434 if (dev->truncated_dvd) {
435 dev->truncated_dvd = false; /* turn off flag */
436 } else { /* DVD part written */
437 dev->num_dvd_parts++; /* there is now one more part on DVD */
438 dev->VolCatInfo.VolCatParts = dev->num_dvd_parts;
441 /* Delete spool file */
442 make_spooled_dvd_filename(dev, archive_name);
443 unlink(archive_name.c_str());
444 Dmsg1(29, "unlink(%s)\n", archive_name.c_str());
445 sm_check(__FILE__, __LINE__, false);
447 /* growisofs umounted the device, so remount it (it will update the free space) */
448 dev->clear_mounted();
450 Jmsg(dcr->jcr, M_INFO, 0, _("Remaining free space %s on %s\n"),
451 edit_uint64_with_commas(dev->free_space, ed1), dev->print_name());
452 sm_check(__FILE__, __LINE__, false);
457 * Open the next part file.
459 * - Increment part number
460 * - Reopen the device
462 int dvd_open_next_part(DCR *dcr)
464 DEVICE *dev = dcr->dev;
467 Dmsg6(29, "Enter: == open_next_part part=%d npart=%d dev=%s vol=%s mode=%d file_addr=%d\n",
468 dev->part, dev->num_dvd_parts, dev->print_name(),
469 dev->VolCatInfo.VolCatName, dev->openmode, dev->file_addr);
470 if (!dev->is_dvd()) {
471 Dmsg1(000, "Device %s is not dvd!!!!\n", dev->print_name());
475 /* When appending, do not open a new part if the current is empty */
476 if (dev->can_append() && (dev->part > dev->num_dvd_parts) &&
477 (dev->part_size == 0)) {
478 Dmsg0(29, "open_next_part exited immediately (dev->part_size == 0).\n");
483 * Note, when we close, the Volume header is zeroed. Since
484 * we reopen, but are in fact opening the same volume without
485 * re-reading the Volume header, we simply save and restore it.
487 memcpy(&VolHdr, &dev->VolHdr, sizeof(VolHdr));
488 dev->close(); /* close current part */
489 memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
492 * If we have a part open for write, then write it to
493 * DVD before opening the next part.
495 if (dev->part > dev->num_dvd_parts && dev->can_append()) {
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 if (dev->num_dvd_parts < dev->part) {
509 POOL_MEM archive_name(PM_FNAME);
512 * First check what is on DVD. If our part is there, we
513 * are in trouble, so bail out.
514 * NB: This is however not a problem if we are writing the first part.
515 * It simply means that we are overriding an existing volume...
517 if (dev->num_dvd_parts > 0) {
518 make_mounted_dvd_filename(dev, archive_name); /* makes dvd name */
519 Dmsg1(100, "Check if part on DVD: %s\n", archive_name.c_str());
520 if (stat(archive_name.c_str(), &buf) == 0) {
521 /* bad news bail out */
522 Mmsg1(&dev->errmsg, _("Next Volume part already exists on DVD. Cannot continue: %s\n"),
523 archive_name.c_str());
528 Dmsg2(400, "num_dvd_parts=%d part=%d\n", dev->num_dvd_parts, dev->part);
529 make_spooled_dvd_filename(dev, archive_name); /* makes spool name */
531 /* Check if the next part exists in spool directory . */
532 Dmsg1(100, "Check if part on spool: $s\n", archive_name.c_str());
533 if ((stat(archive_name.c_str(), &buf) == 0) || (errno != ENOENT)) {
534 Dmsg1(29, "open_next_part %s is in the way, deleting it...\n", archive_name.c_str());
535 /* Then try to unlink it */
536 if (unlink(archive_name.c_str()) < 0) {
538 dev->dev_errno = errno;
539 Mmsg2(dev->errmsg, _("open_next_part can't unlink existing part %s, ERR=%s\n"),
540 archive_name.c_str(), be.strerror());
546 Dmsg2(400, "Call dev->open(vol=%s, mode=%d)\n", dcr->VolCatInfo.VolCatName,
549 /* Open next part. Note, this sets part_size for part opened. */
550 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
553 /* Restore Volume header record */
554 memcpy(&dev->VolHdr, &VolHdr, sizeof(dev->VolHdr));
555 dev->set_labeled(); /* all next parts are "labeled" */
556 if (dev->part > dev->num_dvd_parts) { /* set append if new part created */
564 * Open the first part file.
566 * - Reopen the device
568 int dvd_open_first_part(DCR *dcr, int mode)
570 DEVICE *dev = dcr->dev;
573 Dmsg5(29, "Enter: ==== open_first_part dev=%s Vol=%s mode=%d num_dvd_parts=%d append=%d\n", dev->print_name(),
574 dev->VolCatInfo.VolCatName, dev->openmode, dev->num_dvd_parts, dev->can_append());
578 * Note, when we close, the Volume header is zeroed. Since
579 * we reopen, but are in fact opening the same volume without
580 * re-reading the Volume header, we simply save and restore it.
582 memcpy(&VolHdr, &dev->VolHdr, sizeof(VolHdr));
584 memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
586 Dmsg2(400, "Call dev->open(vol=%s, mode=%d)\n", dcr->VolCatInfo.VolCatName,
588 Dmsg0(100, "Set part=1\n");
593 /* Restore Volume header record */
594 memcpy(&dev->VolHdr, &VolHdr, sizeof(dev->VolHdr));
595 if (dev->open(dcr, mode) < 0) {
596 Dmsg0(400, "open dev() failed\n");
599 if (dev->part > dev->num_dvd_parts) { /* created new part */
602 Dmsg2(400, "Leave open_first_part state=%s append=%d\n", dev->is_open()?"open":"not open", dev->can_append());
608 /* Protected version of lseek, which opens the right part if necessary */
609 off_t lseek_dev(DEVICE *dev, off_t offset, int whence)
613 char ed1[50], ed2[50];
615 Dmsg3(400, "Enter lseek_dev fd=%d part=%d nparts=%d\n", dev->fd,
616 dev->part, dev->num_dvd_parts);
617 if (!dev->is_dvd()) {
618 Dmsg0(400, "Using sys lseek\n");
619 return lseek(dev->fd, offset, whence);
622 /* Return I/O error ... no part */
623 if (dev->part > dev->num_dvd_parts) {
627 dcr = (DCR *)dev->attached_dcrs->first(); /* any dcr will do */
630 Dmsg2(400, "lseek_dev SEEK_SET to %s (part_start=%s)\n",
631 edit_uint64(offset, ed1), edit_uint64(dev->part_start, ed2));
632 if ((uint64_t)offset >= dev->part_start) {
633 if ((uint64_t)offset < dev->part_start+dev->part_size) {
634 /* We are staying in the current part, just seek */
635 if ((pos = lseek(dev->fd, offset-dev->part_start, SEEK_SET)) < 0) {
638 return pos + dev->part_start;
641 /* Load next part, and start again */
642 Dmsg0(100, "lseek open next part\n");
643 if (dvd_open_next_part(dcr) < 0) {
644 Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
647 Dmsg2(100, "Recurse lseek after open next part=%d num_part=%d\n",
648 dev->part, dev->num_dvd_parts);
649 return lseek_dev(dev, offset, SEEK_SET);
653 * pos < dev->part_start :
654 * We need to access a previous part,
655 * so just load the first one, and seek again
656 * until the right one is loaded
658 Dmsg0(100, "lseek open first part\n");
659 if (dvd_open_first_part(dcr, dev->openmode) < 0) {
660 Dmsg0(400, "lseek_dev failed while trying to open the first part\n");
663 Dmsg2(100, "Recurse lseek after open first part=%d num_part=%d\n",
664 dev->part, dev->num_dvd_parts);
665 return lseek_dev(dev, offset, SEEK_SET);
669 Dmsg1(400, "lseek_dev SEEK_CUR to %s\n", edit_uint64(offset, ed1));
670 if ((pos = lseek(dev->fd, (off_t)0, SEEK_CUR)) < 0) {
673 pos += dev->part_start;
675 Dmsg1(400, "lseek_dev SEEK_CUR returns %s\n", edit_uint64(pos, ed1));
677 } else { /* Not used in Bacula, but should work */
678 return lseek_dev(dev, pos, SEEK_SET);
682 Dmsg1(400, "lseek_dev SEEK_END to %s\n", edit_uint64(offset, ed1));
684 * Bacula does not use offsets for SEEK_END
685 * Also, Bacula uses seek_end only when it wants to
686 * append to the volume, so for a dvd that means
687 * that the volume must be spooled since the DVD
688 * itself is read-only (as currently implemented).
690 if (offset > 0) { /* Not used by bacula */
691 Dmsg1(400, "lseek_dev SEEK_END called with an invalid offset %s\n",
692 edit_uint64(offset, ed1));
696 /* If we are already on a spooled part and have the
697 * right part number, simply seek
699 if (dev->is_part_spooled() && dev->part > dev->num_dvd_parts) {
700 if ((pos = lseek(dev->fd, (off_t)0, SEEK_END)) < 0) {
703 Dmsg1(400, "lseek_dev SEEK_END returns %s\n",
704 edit_uint64(pos + dev->part_start, ed1));
705 return pos + dev->part_start;
709 * Load the first part, then load the next until we reach the last one.
710 * This is the only way to be sure we compute the right file address.
712 * Save previous openmode, and open all but last part read-only
715 int modesave = dev->openmode;
716 if (dvd_open_first_part(dcr, OPEN_READ_ONLY) < 0) {
717 Dmsg0(400, "lseek_dev failed while trying to open the first part\n");
720 if (dev->num_dvd_parts > 0) {
721 while (dev->part < dev->num_dvd_parts) {
722 if (dvd_open_next_part(dcr) < 0) {
723 Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
727 dev->openmode = modesave;
728 if (dvd_open_next_part(dcr) < 0) {
729 Dmsg0(400, "lseek_dev failed while trying to open the next part\n");
733 return lseek_dev(dev, 0, SEEK_END);
742 bool dvd_close_job(DCR *dcr)
744 DEVICE *dev = dcr->dev;
748 /* If the device is a dvd and WritePartAfterJob
749 * is set to yes, open the next part, so, in case of a device
750 * that requires mount, it will be written to the device.
752 if (dev->is_dvd() && jcr->write_part_after_job && (dev->part_size > 0)) {
753 Dmsg1(400, "Writing last part=%d write_partafter_job is set.\n",
755 if (dev->part < dev->num_dvd_parts+1) {
756 Jmsg3(jcr, M_FATAL, 0, _("Error writing. Current part less than total number of parts (%d/%d, device=%s)\n"),
757 dev->part, dev->num_dvd_parts, dev->print_name());
758 dev->dev_errno = EIO;
762 if (ok && !dvd_write_part(dcr)) {
763 Jmsg2(jcr, M_FATAL, 0, _("Unable to write last on %s: ERR=%s\n"),
764 dev->print_name(), dev->bstrerror());
765 dev->dev_errno = EIO;
772 bool truncate_dvd(DCR *dcr)
774 DEVICE* dev = dcr->dev;
777 memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
779 if (!unmount_dvd(dev, 1)) {
780 Dmsg0(400, "truncate_dvd: Failed to unmount DVD\n");
784 /* Set num_dvd_parts to zero (on disk) */
785 dev->num_dvd_parts = 0;
786 dcr->VolCatInfo.VolCatParts = 0;
787 dev->VolCatInfo.VolCatParts = 0;
789 Dmsg0(400, "truncate_dvd: Opening first part (1)...\n");
791 dev->truncating = true;
792 if (dvd_open_first_part(dcr, CREATE_READ_WRITE) < 0) {
793 Dmsg0(400, "truncate_dvd: Error while opening first part (1).\n");
794 dev->truncating = false;
798 Dmsg0(400, "truncate_dvd: Truncating...\n");
800 /* If necessary, truncate it spool file. */
801 if (ftruncate(dev->fd, 0) != 0) {
803 Mmsg2(dev->errmsg, _("Unable to truncate device %s. ERR=%s\n"),
804 dev->print_name(), be.strerror());
805 dev->truncating = false;
810 memcpy(&dev->VolCatInfo, &dcr->VolCatInfo, sizeof(dev->VolCatInfo));
812 Dmsg0(400, "truncate_dvd: Opening first part (2)...\n");
815 * Now actually truncate the DVD
816 * This is really kludgy, why not an argument or a separate
819 if (!dvd_write_part(dcr)) {
820 Dmsg0(400, "truncate_dvd: Error while writing to DVD.\n");
821 dev->truncating = false;
824 dev->truncating = false;
826 /* Set num_dvd_parts to zero (on disk) */
827 dev->num_dvd_parts = 0;
828 dcr->VolCatInfo.VolCatParts = 0;
829 dev->VolCatInfo.VolCatParts = 0;
832 if (!dir_update_volume_info(dcr, false)) {
836 if (dvd_open_first_part(dcr, OPEN_READ_WRITE) < 0) {
837 Dmsg0(400, "truncate_dvd: Error while opening first part (2).\n");
844 /* Checks if we can write on a non-blank DVD: meaning that it just have been
845 * truncated (there is only one zero-sized file on the DVD, with the right
848 * Note! Normally if we can mount the device, which should be the case
849 * when we get here, it is not a blank DVD. Hence we check if
850 * there is a zero length file with the right name, in which case
852 * This seems terribly kludgie to me. KES
854 bool check_can_write_on_non_blank_dvd(DCR *dcr)
856 DEVICE* dev = dcr->dev;
858 struct dirent *entry, *result;
861 bool matched = false;
862 struct stat filestat;
864 name_max = pathconf(".", _PC_NAME_MAX);
865 if (name_max < 1024) {
869 if (!(dp = opendir(dev->device->mount_point))) {
871 dev->dev_errno = errno;
872 Dmsg3(29, "check_can_write_on_non_blank_dvd: failed to open dir %s (dev=%s), ERR=%s\n",
873 dev->device->mount_point, dev->print_name(), be.strerror());
877 entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
879 if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
880 dev->dev_errno = EIO;
881 Dmsg2(129, "check_can_write_on_non_blank_dvd: no more files in dir %s (dev=%s)\n",
882 dev->device->mount_point, dev->print_name());
885 Dmsg2(99, "check_can_write_on_non_blank_dvd: found %s (versus %s)\n",
886 result->d_name, dev->VolCatInfo.VolCatName);
887 if (strcmp(result->d_name, dev->VolCatInfo.VolCatName) == 0) {
888 /* Found the file, checking it is empty */
889 POOL_MEM filename(PM_FNAME);
890 pm_strcpy(filename, dev->device->mount_point);
891 if (filename.c_str()[strlen(filename.c_str())-1] != '/') {
892 pm_strcat(filename, "/");
894 pm_strcat(filename, dev->VolCatInfo.VolCatName);
895 if (stat(filename.c_str(), &filestat) < 0) {
897 dev->dev_errno = errno;
898 Dmsg2(29, "check_can_write_on_non_blank_dvd: cannot stat file (file=%s), ERR=%s\n",
899 filename.c_str(), be.strerror());
902 Dmsg2(99, "check_can_write_on_non_blank_dvd: size of %s is %d\n",
903 filename.c_str(), filestat.st_size);
904 matched = filestat.st_size == 0;
913 /* There are more than 3 files (., .., and the volume file) */
914 Dmsg1(29, "Cannot write on blank DVD too many files %d greater than 3\n", count);
918 Dmsg2(29, "OK can_write_on_non_blank_dvd: got %d files in the mount point (matched=%d)\n", count, matched);