2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation plus additions
11 that are listed in the file LICENSE.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of John Walker.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
30 * dev.c -- low level operations on device (storage device)
34 * NOTE!!!! None of these routines are reentrant. You must
35 * use dev->r_dlock() and dev->unlock() at a higher level,
36 * or use the xxx_device() equivalents. By moving the
37 * thread synchronization to a higher level, we permit
38 * the higher level routines to "seize" the device and
39 * to carry out operations without worrying about who
40 * set what lock (i.e. race conditions).
42 * Note, this is the device dependent code, and may have
43 * to be modified for each system, but is meant to
44 * be as "generic" as possible.
46 * The purpose of this code is to develop a SIMPLE Storage
47 * daemon. More complicated coding (double buffering, writer
48 * thread, ...) is left for a later version.
50 * Unfortunately, I have had to add more and more complication
51 * to this code. This was not foreseen as noted above, and as
52 * a consequence has lead to something more contorted than is
53 * really necessary -- KES. Note, this contortion has been
54 * corrected to a large extent by a rewrite (Apr MMI).
60 * Handling I/O errors and end of tape conditions are a bit tricky.
61 * This is how it is currently done when writting.
62 * On either an I/O error or end of tape,
63 * we will stop writing on the physical device (no I/O recovery is
64 * attempted at least in this daemon). The state flag will be sent
65 * to include ST_EOT, which is ephemeral, and ST_WEOT, which is
66 * persistent. Lots of routines clear ST_EOT, but ST_WEOT is
67 * cleared only when the problem goes away. Now when ST_WEOT
68 * is set all calls to write_block_to_device() call the fix_up
69 * routine. In addition, all threads are blocked
70 * from writing on the tape by calling lock_dev(), and thread other
71 * than the first thread to hit the EOT will block on a condition
72 * variable. The first thread to hit the EOT will continue to
73 * be able to read and write the tape (he sort of tunnels through
74 * the locking mechanism -- see lock_dev() for details).
76 * Now presumably somewhere higher in the chain of command
77 * (device.c), someone will notice the EOT condition and
78 * get a new tape up, get the tape label read, and mark
79 * the label for rewriting. Then this higher level routine
80 * will write the unwritten buffer to the new volume.
81 * Finally, he will release
82 * any blocked threads by doing a broadcast on the condition
83 * variable. At that point, we should be totally back in
84 * business with no lost data.
95 /* Forward referenced functions */
96 void set_os_device_parameters(DCR *dcr);
97 static bool dev_get_os_pos(DEVICE *dev, struct mtget *mt_stat);
98 static char *mode_to_str(int mode);
101 * Allocate and initialize the DEVICE structure
102 * Note, if dev is non-NULL, it is already allocated,
103 * thus we neither allocate it nor free it. This allows
104 * the caller to put the packet in shared memory.
106 * Note, for a tape, the device->device_name is the device name
107 * (e.g. /dev/nst0), and for a file, the device name
108 * is the directory in which the file will be placed.
112 init_dev(JCR *jcr, DEVRES *device)
120 /* If no device type specified, try to guess */
121 if (!device->dev_type) {
122 /* Check that device is available */
123 if (stat(device->device_name, &statp) < 0) {
125 Jmsg2(jcr, M_ERROR, 0, _("Unable to stat device %s: ERR=%s\n"),
126 device->device_name, be.strerror());
129 if (S_ISDIR(statp.st_mode)) {
130 device->dev_type = B_FILE_DEV;
131 } else if (S_ISCHR(statp.st_mode)) {
132 device->dev_type = B_TAPE_DEV;
133 } else if (S_ISFIFO(statp.st_mode)) {
134 device->dev_type = B_FIFO_DEV;
135 } else if (!(device->cap_bits & CAP_REQMOUNT)) {
136 Jmsg2(jcr, M_ERROR, 0, _("%s is an unknown device type. Must be tape or directory\n"
137 " or have RequiresMount=yes for DVD. st_mode=%x\n"),
138 device->device_name, statp.st_mode);
141 device->dev_type = B_DVD_DEV;
145 dev = (DEVICE *)malloc(sizeof(DEVICE));
146 memset(dev, 0, sizeof(DEVICE));
147 dev->Slot = -1; /* unknown */
149 /* Copy user supplied device parameters from Resource */
150 dev->dev_name = get_memory(strlen(device->device_name)+1);
151 pm_strcpy(dev->dev_name, device->device_name);
152 dev->prt_name = get_memory(strlen(device->device_name) + strlen(device->hdr.name) + 20);
153 /* We edit "Resource-name" (physical-name) */
154 Mmsg(dev->prt_name, "\"%s\" (%s)", device->hdr.name, device->device_name);
155 Dmsg1(400, "Allocate dev=%s\n", dev->print_name());
156 dev->capabilities = device->cap_bits;
157 dev->min_block_size = device->min_block_size;
158 dev->max_block_size = device->max_block_size;
159 dev->max_volume_size = device->max_volume_size;
160 dev->max_file_size = device->max_file_size;
161 dev->volume_capacity = device->volume_capacity;
162 dev->max_rewind_wait = device->max_rewind_wait;
163 dev->max_open_wait = device->max_open_wait;
164 dev->max_open_vols = device->max_open_vols;
165 dev->vol_poll_interval = device->vol_poll_interval;
166 dev->max_spool_size = device->max_spool_size;
167 dev->drive_index = device->drive_index;
168 dev->autoselect = device->autoselect;
169 dev->dev_type = device->dev_type;
170 if (dev->is_tape()) { /* No parts on tapes */
171 dev->max_part_size = 0;
173 dev->max_part_size = device->max_part_size;
176 if (dev->vol_poll_interval && dev->vol_poll_interval < 60) {
177 dev->vol_poll_interval = 60;
179 /* Link the dev and device structures together */
180 dev->device = device;
183 if (dev->is_fifo()) {
184 dev->capabilities |= CAP_STREAM; /* set stream device */
187 /* If the device requires mount :
188 * - Check that the mount point is available
189 * - Check that (un)mount commands are defined
191 if ((dev->is_file() || dev->is_dvd()) && dev->requires_mount()) {
192 if (!device->mount_point || stat(device->mount_point, &statp) < 0) {
194 dev->dev_errno = errno;
195 Jmsg2(jcr, M_ERROR_TERM, 0, _("Unable to stat mount point %s: ERR=%s\n"),
196 device->mount_point, be.strerror());
200 if (!device->mount_command || !device->unmount_command) {
201 Jmsg0(jcr, M_ERROR_TERM, 0, _("Mount and unmount commands must defined for a device which requires mount.\n"));
203 if (!device->write_part_command) {
204 Jmsg0(jcr, M_ERROR_TERM, 0, _("Write part command must be defined for a device which requires mount.\n"));
208 if (dev->max_block_size > 1000000) {
209 Jmsg3(jcr, M_ERROR, 0, _("Block size %u on device %s is too large, using default %u\n"),
210 dev->max_block_size, dev->print_name(), DEFAULT_BLOCK_SIZE);
211 dev->max_block_size = 0;
213 if (dev->max_block_size % TAPE_BSIZE != 0) {
214 Jmsg2(jcr, M_WARNING, 0, _("Max block size %u not multiple of device %s block size.\n"),
215 dev->max_block_size, dev->print_name());
218 dev->errmsg = get_pool_memory(PM_EMSG);
221 if ((errstat = pthread_mutex_init(&dev->m_mutex, NULL)) != 0) {
223 dev->dev_errno = errstat;
224 Mmsg1(dev->errmsg, _("Unable to init mutex: ERR=%s\n"), be.strerror(errstat));
225 Jmsg0(jcr, M_ERROR_TERM, 0, dev->errmsg);
227 if ((errstat = pthread_cond_init(&dev->wait, NULL)) != 0) {
229 dev->dev_errno = errstat;
230 Mmsg1(dev->errmsg, _("Unable to init cond variable: ERR=%s\n"), be.strerror(errstat));
231 Jmsg0(jcr, M_ERROR_TERM, 0, dev->errmsg);
233 if ((errstat = pthread_cond_init(&dev->wait_next_vol, NULL)) != 0) {
235 dev->dev_errno = errstat;
236 Mmsg1(dev->errmsg, _("Unable to init cond variable: ERR=%s\n"), be.strerror(errstat));
237 Jmsg0(jcr, M_ERROR_TERM, 0, dev->errmsg);
239 if ((errstat = pthread_mutex_init(&dev->spool_mutex, NULL)) != 0) {
241 dev->dev_errno = errstat;
242 Mmsg1(dev->errmsg, _("Unable to init mutex: ERR=%s\n"), be.strerror(errstat));
243 Jmsg0(jcr, M_ERROR_TERM, 0, dev->errmsg);
246 if ((errstat = rwl_init(&dev->lock)) != 0) {
248 dev->dev_errno = errstat;
249 Mmsg1(dev->errmsg, _("Unable to init mutex: ERR=%s\n"), be.strerror(errstat));
250 Jmsg0(jcr, M_ERROR_TERM, 0, dev->errmsg);
255 dev->attached_dcrs = New(dlist(dcr, &dcr->dev_link));
256 Dmsg2(29, "init_dev: tape=%d dev_name=%s\n", dev->is_tape(), dev->dev_name);
262 * Open the device with the operating system and
263 * initialize buffer pointers.
265 * Returns: -1 on error
268 * Note, for a tape, the VolName is the name we give to the
269 * volume (not really used here), but for a file, the
270 * VolName represents the name of the file to be created/opened.
271 * In the case of a file, the full name is the device name
272 * (archive_name) with the VolName concatenated.
275 DEVICE::open(DCR *dcr, int omode)
279 if (openmode == omode) {
288 Dmsg0(100, "Close fd for mode change.\n");
289 preserve = state & (ST_LABEL|ST_APPEND|ST_READ);
293 bstrncpy(VolCatInfo.VolCatName, dcr->VolumeName, sizeof(VolCatInfo.VolCatName));
296 Dmsg4(29, "open dev: type=%d dev_name=%s vol=%s mode=%s\n", dev_type,
297 print_name(), VolCatInfo.VolCatName, mode_to_str(omode));
298 state &= ~(ST_LABEL|ST_APPEND|ST_READ|ST_EOT|ST_WEOT|ST_EOF);
299 Slot = -1; /* unknown slot */
300 label_type = B_BACULA_LABEL;
301 if (is_tape() || is_fifo()) {
302 open_tape_device(dcr, omode);
303 } else if (is_dvd()) {
304 Dmsg1(100, "call open_dvd_device mode=%s\n", mode_to_str(omode));
305 open_dvd_device(dcr, omode);
307 Dmsg1(100, "call open_file_device mode=%s\n", mode_to_str(omode));
308 open_file_device(dcr, omode);
310 state |= preserve; /* reset any important state info */
311 Dmsg2(100, "preserve=0x%x fd=%d\n", preserve, m_fd);
315 void DEVICE::set_mode(int new_mode)
318 case CREATE_READ_WRITE:
319 mode = O_CREAT | O_RDWR | O_BINARY;
321 case OPEN_READ_WRITE:
322 mode = O_RDWR | O_BINARY;
325 mode = O_RDONLY | O_BINARY;
327 case OPEN_WRITE_ONLY:
328 mode = O_WRONLY | O_BINARY;
331 Emsg0(M_ABORT, 0, _("Illegal mode given to open dev.\n"));
337 void DEVICE::open_tape_device(DCR *dcr, int omode)
340 int timeout = max_open_wait;
341 #if !defined(HAVE_WIN32)
343 utime_t start_time = time(NULL);
347 Dmsg0(29, "Open dev: device is tape\n");
349 get_autochanger_loaded_slot(dcr);
358 if (is_fifo() && timeout) {
360 tid = start_thread_timer(pthread_self(), timeout);
362 Dmsg2(100, "Try open %s mode=%s\n", print_name(), mode_to_str(omode));
363 #if defined(HAVE_WIN32)
366 if ((m_fd = tape_open(dev_name, mode)) < 0) {
373 /* If busy retry each second for max_open_wait seconds */
375 /* Try non-blocking open */
376 m_fd = ::open(dev_name, mode+O_NONBLOCK);
380 Dmsg5(050, "Open error on %s omode=%d mode=%x errno=%d: ERR=%s\n",
381 print_name(), omode, mode, errno, be.strerror());
383 /* Tape open, now rewind it */
384 Dmsg0(050, "Rewind after open\n");
385 mt_com.mt_op = MTREW;
387 /* rewind only if dev is a tape */
388 if (is_tape() && (ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0)) {
390 dev_errno = errno; /* set error status from rewind */
393 Dmsg2(100, "Rewind error on %s close: ERR=%s\n", print_name(),
394 be.strerror(dev_errno));
395 /* If we get busy, device is probably rewinding, try again */
396 if (dev_errno != EBUSY) {
397 break; /* error -- no medium */
400 /* Got fd and rewind worked, so we must have medium in drive */
402 m_fd = ::open(dev_name, mode); /* open normally */
406 Dmsg5(050, "Open error on %s omode=%d mode=%x errno=%d: ERR=%s\n",
407 print_name(), omode, mode, errno, be.strerror());
412 set_os_device_parameters(dcr); /* do system dependent stuff */
413 break; /* Successfully opened and rewound */
417 /* Exceed wait time ? */
418 if (time(NULL) - start_time >= max_open_wait) {
419 break; /* yes, get out */
426 Mmsg2(errmsg, _("Unable to open device %s: ERR=%s\n"),
427 print_name(), be.strerror(dev_errno));
428 Dmsg1(100, "%s", errmsg);
431 /* Stop any open() timer we started */
433 stop_thread_timer(tid);
436 Dmsg1(29, "open dev: tape %d opened\n", m_fd);
443 void DEVICE::open_file_device(DCR *dcr, int omode)
445 POOL_MEM archive_name(PM_FNAME);
447 get_autochanger_loaded_slot(dcr);
450 * Handle opening of File Archive (not a tape)
453 pm_strcpy(archive_name, dev_name);
455 * If this is a virtual autochanger (i.e. changer_res != NULL)
456 * we simply use the device name, assuming it has been
457 * appropriately setup by the "autochanger".
459 if (!device->changer_res || device->changer_command[0] == 0) {
460 if (VolCatInfo.VolCatName[0] == 0) {
461 Mmsg(errmsg, _("Could not open file device %s. No Volume name given.\n"),
467 if (!IsPathSeparator(archive_name.c_str()[strlen(archive_name.c_str())-1])) {
468 pm_strcat(archive_name, "/");
470 pm_strcat(archive_name, VolCatInfo.VolCatName);
473 mount(1); /* do mount if required */
477 /* If creating file, give 0640 permissions */
478 Dmsg3(29, "open disk: mode=%s open(%s, 0x%x, 0640)\n", mode_to_str(omode),
479 archive_name.c_str(), mode);
480 /* Use system open() */
481 if ((m_fd = ::open(archive_name.c_str(), mode, 0640)) < 0) {
484 Mmsg2(errmsg, _("Could not open: %s, ERR=%s\n"), archive_name.c_str(),
486 Dmsg1(29, "open failed: %s", errmsg);
487 Emsg0(M_FATAL, 0, errmsg);
493 Dmsg4(29, "open dev: disk fd=%d opened, part=%d/%d, part_size=%u\n",
494 m_fd, part, num_dvd_parts, part_size);
498 * Open a DVD device. N.B. at this point, dcr->VolCatInfo.VolCatName
499 * (NB:??? I think it's VolCatInfo.VolCatName that is right)
500 * has the desired Volume name, but there is NO assurance that
501 * any other field of VolCatInfo is correct.
503 void DEVICE::open_dvd_device(DCR *dcr, int omode)
505 POOL_MEM archive_name(PM_FNAME);
506 struct stat filestat;
509 * Handle opening of DVD Volume
511 Dmsg2(29, "Enter: open_dvd_dev: DVD vol=%s mode=%s\n",
512 &dcr->VolCatInfo, mode_to_str(omode));
515 * For a DVD we must always pull the state info from dcr->VolCatInfo
516 * This is a bit ugly, but is necessary because we need to open/close/re-open
517 * the dvd file in order to properly mount/unmount and access the
518 * DVD. So we store the state of the DVD as far as is known in the
519 * catalog in dcr->VolCatInfo, and thus we refresh the dev->VolCatInfo
520 * copy here, when opening.
522 VolCatInfo = dcr->VolCatInfo; /* structure assignment */
523 Dmsg1(100, "Volume=%s\n", VolCatInfo.VolCatName);
525 if (VolCatInfo.VolCatName[0] == 0) {
526 Dmsg1(10, "Could not open DVD device %s. No Volume name given.\n",
528 Mmsg(errmsg, _("Could not open DVD device %s. No Volume name given.\n"),
535 Dmsg0(100, "Set part=1\n");
536 part = 1; /* count from 1 */
540 if (num_dvd_parts != VolCatInfo.VolCatParts) {
541 num_dvd_parts = VolCatInfo.VolCatParts;
545 * If we are not trying to access the last part, set mode to
546 * OPEN_READ_ONLY as writing would be an error.
548 Dmsg2(29, "open DVD part=%d num_dvd_parts=%d\n", part, num_dvd_parts);
549 /* Now find the name of the part that we want to access */
550 if (part <= num_dvd_parts) {
551 omode = OPEN_READ_ONLY;
552 make_mounted_dvd_filename(this, archive_name);
553 set_part_spooled(false);
555 omode = OPEN_READ_WRITE;
556 make_spooled_dvd_filename(this, archive_name);
557 set_part_spooled(true);
561 // Clear any previous blank_dvd status - we will recalculate it here
564 Dmsg3(99, "open_dvd_device: part=%d num_dvd_parts=%d, VolCatInfo.VolCatParts=%d\n",
565 part, num_dvd_parts, dcr->VolCatInfo.VolCatParts);
568 Dmsg0(99, "DVD device mounted.\n");
569 if (num_dvd_parts == 0 && !truncating) {
571 * If we can mount the device, and we are not truncating the DVD,
572 * we usually want to abort. There is one exception, if there is
573 * only one 0-sized file on the DVD, with the right volume name,
574 * we continue (it's the method used by truncate_dvd to truncate a volume).
576 if (!check_can_write_on_non_blank_dvd(dcr)) {
577 Mmsg(errmsg, _("The DVD in device %s contains data, please blank it before writing.\n"), print_name());
578 Emsg0(M_FATAL, 0, errmsg);
579 unmount(1); /* Unmount the device, so the operator can change it. */
586 * Ensure that we have the correct DVD loaded by looking for part1.
587 * We only succeed the open if it exists. Failure to do this could
588 * leave us trying to add a part to a different DVD!
590 uint32_t oldpart = part;
592 POOL_MEM part1_name(PM_FNAME);
594 make_mounted_dvd_filename(this, part1_name);
596 if (stat(part1_name.c_str(), &statp) < 0) {
598 Mmsg(errmsg, _("Unable to stat DVD part 1 file %s: ERR=%s\n"),
599 part1_name.c_str(), be.strerror());
600 Emsg0(M_FATAL, 0, errmsg);
604 if (!S_ISREG(statp.st_mode)) {
605 /* It is not a regular file */
606 Mmsg(errmsg, _("DVD part 1 is not a regular file %s.\n"),
608 Emsg0(M_FATAL, 0, errmsg);
614 Dmsg0(99, "DVD device mount failed.\n");
615 /* We cannot mount the device */
616 if (num_dvd_parts == 0) {
617 /* Run free space, check there is a media. */
618 if (!update_freespace()) {
619 Emsg0(M_FATAL, 0, errmsg);
624 Dmsg1(29, "Could not mount device %s, this is not a problem (num_dvd_parts == 0), and have media.\n", print_name());
626 Mmsg(errmsg, _("There is no valid DVD in device %s.\n"), print_name());
627 Emsg0(M_FATAL, 0, errmsg);
632 Mmsg(errmsg, _("Could not mount DVD device %s.\n"), print_name());
633 Emsg0(M_FATAL, 0, errmsg);
639 Dmsg5(29, "open dev: DVD dev=%s mode=%s part=%d npart=%d volcatnparts=%d\n",
640 archive_name.c_str(), mode_to_str(omode),
641 part, num_dvd_parts, dcr->VolCatInfo.VolCatParts);
643 Dmsg2(100, "openmode=%d %s\n", openmode, mode_to_str(openmode));
646 /* If creating file, give 0640 permissions */
647 Dmsg3(29, "mode=%s open(%s, 0x%x, 0640)\n", mode_to_str(omode),
648 archive_name.c_str(), mode);
649 /* Use system open() */
650 if ((m_fd = ::open(archive_name.c_str(), mode, 0640)) < 0) {
652 Mmsg2(errmsg, _("Could not open: %s, ERR=%s\n"), archive_name.c_str(),
654 // Should this be set if we try the create/open below
655 dev_errno = EIO; /* Interpreted as no device present by acquire.c:acquire_device_for_read(). */
656 Dmsg1(29, "open failed: %s", errmsg);
658 /* Previous open failed. See if we can recover */
659 if ((omode == OPEN_READ_ONLY || omode == OPEN_READ_WRITE) &&
660 (part > num_dvd_parts)) {
661 /* If the last part (on spool), doesn't exist when accessing,
662 * create it. In read/write mode a write will be allowed (higher
663 * level software thinks that we are extending a pre-existing
664 * media. Reads for READ_ONLY will report immediately an EOF
665 * Sometimes it is better to finish with an EOF than with an error. */
666 Dmsg1(29, "Creating last part on spool: %s\n", archive_name.c_str());
667 omode = CREATE_READ_WRITE;
668 set_mode(CREATE_READ_WRITE);
669 m_fd = ::open(archive_name.c_str(), mode, 0640);
673 Dmsg1(100, "after open fd=%d\n", m_fd);
675 if (omode == OPEN_READ_WRITE || omode == CREATE_READ_WRITE) {
678 /* Get size of file */
679 if (fstat(m_fd, &filestat) < 0) {
682 Mmsg2(errmsg, _("Could not fstat: %s, ERR=%s\n"), archive_name.c_str(),
684 Dmsg1(29, "open failed: %s", errmsg);
685 /* Use system close() */
689 part_size = filestat.st_size;
691 update_pos(dcr); /* update position */
699 * Returns: true on success
702 bool DEVICE::rewind(DCR *dcr)
708 Dmsg3(400, "rewind res=%d fd=%d %s\n", reserved_device, m_fd, print_name());
709 state &= ~(ST_EOT|ST_EOF|ST_WEOT); /* remove EOF/EOT flags */
710 block_num = file = 0;
714 if (!is_dvd()) { /* In case of major error, the fd is not open on DVD, so we don't want to abort. */
716 Mmsg1(errmsg, _("Bad call to rewind. Device %s not open\n"),
718 Emsg0(M_ABORT, 0, errmsg);
723 mt_com.mt_op = MTREW;
725 /* If we get an I/O error on rewind, it is probably because
726 * the drive is actually busy. We loop for (about 5 minutes)
727 * retrying every 5 seconds.
729 for (i=max_rewind_wait; ; i -= 5) {
730 if (tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
733 if (i == max_rewind_wait) {
734 Dmsg1(200, "Rewind error, %s. retrying ...\n", be.strerror());
737 * This is a gross hack, because if the user has the
738 * device mounted (i.e. open), then uses mtx to load
739 * a tape, the current open file descriptor is invalid.
740 * So, we close the drive and re-open it.
743 int open_mode = openmode;
746 open(dcr, open_mode);
754 if (dev_errno == EIO) {
755 Mmsg1(errmsg, _("No tape loaded or drive offline on %s.\n"), print_name());
759 if (dev_errno == EIO && i > 0) {
760 Dmsg0(200, "Sleeping 5 seconds.\n");
765 Mmsg2(errmsg, _("Rewind error on %s. ERR=%s.\n"),
766 print_name(), be.strerror());
771 } else if (is_file() || is_dvd()) {
772 if (lseek(dcr, (boffset_t)0, SEEK_SET) < 0) {
775 Mmsg2(errmsg, _("lseek error on %s. ERR=%s.\n"),
776 print_name(), be.strerror());
783 void DEVICE::block(int why)
785 r_dlock(); /* need recursive lock to block */
786 block_device(this, why);
790 void DEVICE::unblock(bool locked)
795 unblock_device(this);
800 const char *DEVICE::print_blocked() const
803 case BST_NOT_BLOCKED:
804 return "BST_NOT_BLOCKED";
806 return "BST_UNMOUNTED";
807 case BST_WAITING_FOR_SYSOP:
808 return "BST_WAITING_FOR_SYSOP";
809 case BST_DOING_ACQUIRE:
810 return "BST_DOING_ACQUIRE";
811 case BST_WRITING_LABEL:
812 return "BST_WRITING_LABEL";
813 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
814 return "BST_UNMOUNTED_WAITING_FOR_SYSOP";
818 return _("unknown blocked code");
823 * Called to indicate that we have just read an
824 * EOF from the device.
826 void DEVICE::set_ateof()
838 * Called to indicate we are now at the end of the tape, and
839 * writing is not possible.
841 void DEVICE::set_ateot()
843 /* Make tape effectively read-only */
844 state |= (ST_EOF|ST_EOT|ST_WEOT);
849 * Position device to end of medium (end of data)
850 * Returns: true on succes
853 bool DEVICE::eod(DCR *dcr)
862 Mmsg1(errmsg, _("Bad call to eod. Device %s not open\n"), print_name());
866 #if defined (__digital__) && defined (__unix__)
867 return fsf(VolCatInfo.VolCatFiles);
874 clear_eof(); /* remove EOF flag */
875 block_num = file = 0;
878 if (is_fifo() || is_prog()) {
882 pos = lseek(dcr, (boffset_t)0, SEEK_END);
883 // Dmsg1(100, "====== Seek to %lld\n", pos);
891 Mmsg2(errmsg, _("lseek error on %s. ERR=%s.\n"),
892 print_name(), be.strerror());
896 if (has_cap(CAP_FASTFSF) && !has_cap(CAP_EOM)) {
897 Dmsg0(100,"Using FAST FSF for EOM\n");
898 /* If unknown position, rewind */
899 if (get_os_tape_file() < 0) {
904 mt_com.mt_op = MTFSF;
906 * ***FIXME*** fix code to handle case that INT16_MAX is
909 mt_com.mt_count = INT16_MAX; /* use big positive number */
910 if (mt_com.mt_count < 0) {
911 mt_com.mt_count = INT16_MAX; /* brain damaged system */
915 if (has_cap(CAP_MTIOCGET) && (has_cap(CAP_FASTFSF) || has_cap(CAP_EOM))) {
916 if (has_cap(CAP_EOM)) {
917 Dmsg0(100,"Using EOM for EOM\n");
918 mt_com.mt_op = MTEOM;
922 if (tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
924 clrerror(mt_com.mt_op);
925 Dmsg1(50, "ioctl error: %s\n", be.strerror());
927 Mmsg2(errmsg, _("ioctl MTEOM error on %s. ERR=%s.\n"),
928 print_name(), be.strerror());
932 os_file = get_os_tape_file();
936 Mmsg2(errmsg, _("ioctl MTIOCGET error on %s. ERR=%s.\n"),
937 print_name(), be.strerror());
940 Dmsg1(100, "EOD file=%d\n", os_file);
948 * Rewind then use FSF until EOT reached
954 * Move file by file to the end of the tape
957 for (file_num=file; !at_eot(); file_num++) {
958 Dmsg0(200, "eod: doing fsf 1\n");
960 Dmsg0(200, "fsf error.\n");
964 * Avoid infinite loop by ensuring we advance.
966 if (!at_eot() && file_num == (int)file) {
967 Dmsg1(100, "fsf did not advance from file %d\n", file_num);
969 os_file = get_os_tape_file();
971 Dmsg2(100, "Adjust file from %d to %d\n", file_num, os_file);
979 * Some drivers leave us after second EOF when doing
980 * MTEOM, so we must backup so that appending overwrites
983 if (has_cap(CAP_BSFATEOM)) {
984 /* Backup over EOF */
986 /* If BSF worked and fileno is known (not -1), set file */
987 os_file = get_os_tape_file();
989 Dmsg2(100, "BSFATEOF adjust file from %d to %d\n", file , os_file);
992 file++; /* wing it -- not correct on all OSes */
995 update_pos(dcr); /* update position */
997 Dmsg1(200, "EOD dev->file=%d\n", file);
1002 * Set the position of the device -- only for files and DVD
1003 * For other devices, there is no generic way to do it.
1004 * Returns: true on succes
1007 bool DEVICE::update_pos(DCR *dcr)
1014 Mmsg0(errmsg, _("Bad device call. Device not open\n"));
1015 Emsg1(M_FATAL, 0, "%s", errmsg);
1019 /* Find out where we are */
1020 if (is_file() || is_dvd()) {
1023 pos = lseek(dcr, (boffset_t)0, SEEK_CUR);
1027 Pmsg1(000, _("Seek error: ERR=%s\n"), be.strerror());
1028 Mmsg2(errmsg, _("lseek error on %s. ERR=%s.\n"),
1029 print_name(), be.strerror());
1033 block_num = (uint32_t)pos;
1034 file = (uint32_t)(pos >> 32);
1041 * Return the status of the device. This was meant
1042 * to be a generic routine. Unfortunately, it doesn't
1043 * seem possible (at least I do not know how to do it
1044 * currently), which means that for the moment, this
1045 * routine has very little value.
1049 uint32_t status_dev(DEVICE *dev)
1051 struct mtget mt_stat;
1054 if (dev->state & (ST_EOT | ST_WEOT)) {
1058 if (dev->state & ST_EOF) {
1062 if (dev->is_tape()) {
1064 Pmsg0(-20,_(" Bacula status:"));
1065 Pmsg2(-20,_(" file=%d block=%d\n"), dev->file, dev->block_num);
1066 if (tape_ioctl(dev->fd(), MTIOCGET, (char *)&mt_stat) < 0) {
1068 dev->dev_errno = errno;
1069 Mmsg2(dev->errmsg, _("ioctl MTIOCGET error on %s. ERR=%s.\n"),
1070 dev->print_name(), be.strerror());
1073 Pmsg0(-20, _(" Device status:"));
1075 #if defined(HAVE_LINUX_OS)
1076 if (GMT_EOF(mt_stat.mt_gstat)) {
1080 if (GMT_BOT(mt_stat.mt_gstat)) {
1084 if (GMT_EOT(mt_stat.mt_gstat)) {
1088 if (GMT_SM(mt_stat.mt_gstat)) {
1092 if (GMT_EOD(mt_stat.mt_gstat)) {
1096 if (GMT_WR_PROT(mt_stat.mt_gstat)) {
1097 stat |= BMT_WR_PROT;
1098 Pmsg0(-20, " WR_PROT");
1100 if (GMT_ONLINE(mt_stat.mt_gstat)) {
1102 Pmsg0(-20, " ONLINE");
1104 if (GMT_DR_OPEN(mt_stat.mt_gstat)) {
1105 stat |= BMT_DR_OPEN;
1106 Pmsg0(-20, " DR_OPEN");
1108 if (GMT_IM_REP_EN(mt_stat.mt_gstat)) {
1109 stat |= BMT_IM_REP_EN;
1110 Pmsg0(-20, " IM_REP_EN");
1112 #elif defined(HAVE_WIN32)
1113 if (GMT_EOF(mt_stat.mt_gstat)) {
1117 if (GMT_BOT(mt_stat.mt_gstat)) {
1121 if (GMT_EOT(mt_stat.mt_gstat)) {
1125 if (GMT_EOD(mt_stat.mt_gstat)) {
1129 if (GMT_WR_PROT(mt_stat.mt_gstat)) {
1130 stat |= BMT_WR_PROT;
1131 Pmsg0(-20, " WR_PROT");
1133 if (GMT_ONLINE(mt_stat.mt_gstat)) {
1135 Pmsg0(-20, " ONLINE");
1137 if (GMT_DR_OPEN(mt_stat.mt_gstat)) {
1138 stat |= BMT_DR_OPEN;
1139 Pmsg0(-20, " DR_OPEN");
1141 if (GMT_IM_REP_EN(mt_stat.mt_gstat)) {
1142 stat |= BMT_IM_REP_EN;
1143 Pmsg0(-20, " IM_REP_EN");
1146 #endif /* !SunOS && !OSF */
1147 if (dev->has_cap(CAP_MTIOCGET)) {
1148 Pmsg2(-20, _(" file=%d block=%d\n"), mt_stat.mt_fileno, mt_stat.mt_blkno);
1150 Pmsg2(-20, _(" file=%d block=%d\n"), -1, -1);
1153 stat |= BMT_ONLINE | BMT_BOT;
1160 * Load medium in device
1161 * Returns: true on success
1164 bool load_dev(DEVICE *dev)
1170 if (dev->fd() < 0) {
1171 dev->dev_errno = EBADF;
1172 Mmsg0(dev->errmsg, _("Bad call to load_dev. Device not open\n"));
1173 Emsg0(M_FATAL, 0, dev->errmsg);
1176 if (!(dev->is_tape())) {
1180 Dmsg0(200, "stored: MTLOAD command not available\n");
1182 dev->dev_errno = ENOTTY; /* function not available */
1183 Mmsg2(dev->errmsg, _("ioctl MTLOAD error on %s. ERR=%s.\n"),
1184 dev->print_name(), be.strerror());
1188 dev->block_num = dev->file = 0;
1191 mt_com.mt_op = MTLOAD;
1192 mt_com.mt_count = 1;
1193 if (tape_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
1195 dev->dev_errno = errno;
1196 Mmsg2(dev->errmsg, _("ioctl MTLOAD error on %s. ERR=%s.\n"),
1197 dev->print_name(), be.strerror());
1205 * Rewind device and put it offline
1206 * Returns: true on success
1209 bool DEVICE::offline()
1214 return true; /* device not open */
1217 state &= ~(ST_APPEND|ST_READ|ST_EOT|ST_EOF|ST_WEOT); /* remove EOF/EOT flags */
1218 block_num = file = 0;
1222 mt_com.mt_op = MTOFFL;
1223 mt_com.mt_count = 1;
1224 if (tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
1227 Mmsg2(errmsg, _("ioctl MTOFFL error on %s. ERR=%s.\n"),
1228 print_name(), be.strerror());
1231 Dmsg1(100, "Offlined device %s\n", print_name());
1235 bool DEVICE::offline_or_rewind()
1240 if (has_cap(CAP_OFFLINEUNMOUNT)) {
1244 * Note, this rewind probably should not be here (it wasn't
1245 * in prior versions of Bacula), but on FreeBSD, this is
1246 * needed in the case the tape was "frozen" due to an error
1247 * such as backspacing after writing and EOF. If it is not
1248 * done, all future references to the drive get and I/O error.
1251 return rewind(NULL);
1256 * Foward space a file
1257 * Returns: true on success
1260 bool DEVICE::fsf(int num)
1268 Mmsg0(errmsg, _("Bad call to fsf. Device not open\n"));
1269 Emsg0(M_FATAL, 0, errmsg);
1279 Mmsg1(errmsg, _("Device %s at End of Tape.\n"), print_name());
1283 Dmsg0(200, "ST_EOF set on entry to FSF\n");
1286 Dmsg0(100, "fsf\n");
1289 * If Fast forward space file is set, then we
1290 * use MTFSF to forward space and MTIOCGET
1291 * to get the file position. We assume that
1292 * the SCSI driver will ensure that we do not
1293 * forward space past the end of the medium.
1295 if (has_cap(CAP_FSF) && has_cap(CAP_MTIOCGET) && has_cap(CAP_FASTFSF)) {
1296 mt_com.mt_op = MTFSF;
1297 mt_com.mt_count = num;
1298 stat = tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1299 if (stat < 0 || (os_file=get_os_tape_file()) < 0) {
1302 Dmsg0(200, "Set ST_EOT\n");
1304 Mmsg2(errmsg, _("ioctl MTFSF error on %s. ERR=%s.\n"),
1305 print_name(), be.strerror());
1306 Dmsg1(200, "%s", errmsg);
1309 Dmsg1(200, "fsf file=%d\n", os_file);
1315 * Here if CAP_FSF is set, and virtually all drives
1316 * these days support it, we read a record, then forward
1317 * space one file. Using this procedure, which is slow,
1318 * is the only way we can be sure that we don't read
1319 * two consecutive EOF marks, which means End of Data.
1321 } else if (has_cap(CAP_FSF)) {
1324 Dmsg0(200, "FSF has cap_fsf\n");
1325 if (max_block_size == 0) {
1326 rbuf_len = DEFAULT_BLOCK_SIZE;
1328 rbuf_len = max_block_size;
1330 rbuf = get_memory(rbuf_len);
1331 mt_com.mt_op = MTFSF;
1332 mt_com.mt_count = 1;
1333 while (num-- && !at_eot()) {
1334 Dmsg0(100, "Doing read before fsf\n");
1335 if ((stat = this->read((char *)rbuf, rbuf_len)) < 0) {
1336 if (errno == ENOMEM) { /* tape record exceeds buf len */
1337 stat = rbuf_len; /* This is OK */
1339 * On IBM drives, they return ENOSPC at EOM
1340 * instead of EOF status
1342 } else if (at_eof() && errno == ENOSPC) {
1348 Dmsg2(100, "Set ST_EOT read errno=%d. ERR=%s\n", dev_errno,
1350 Mmsg2(errmsg, _("read error on %s. ERR=%s.\n"),
1351 print_name(), be.strerror());
1352 Dmsg1(100, "%s", errmsg);
1356 if (stat == 0) { /* EOF */
1357 Dmsg1(100, "End of File mark from read. File=%d\n", file+1);
1358 /* Two reads of zero means end of tape */
1361 Dmsg0(100, "Set ST_EOT\n");
1367 } else { /* Got data */
1372 Dmsg0(100, "Doing MTFSF\n");
1373 stat = tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1374 if (stat < 0) { /* error => EOT */
1377 Dmsg0(100, "Set ST_EOT\n");
1379 Mmsg2(errmsg, _("ioctl MTFSF error on %s. ERR=%s.\n"),
1380 print_name(), be.strerror());
1381 Dmsg0(100, "Got < 0 for MTFSF\n");
1382 Dmsg1(100, "%s", errmsg);
1390 * No FSF, so use FSR to simulate it
1393 Dmsg0(200, "Doing FSR for FSF\n");
1394 while (num-- && !at_eot()) {
1395 fsr(INT32_MAX); /* returns -1 on EOF or EOT */
1399 Mmsg1(errmsg, _("Device %s at End of Tape.\n"), print_name());
1405 Dmsg1(200, "Return %d from FSF\n", stat);
1407 Dmsg0(200, "ST_EOF set on exit FSF\n");
1410 Dmsg0(200, "ST_EOT set on exit FSF\n");
1412 Dmsg1(200, "Return from FSF file=%d\n", file);
1417 * Backward space a file
1418 * Returns: false on failure
1421 bool DEVICE::bsf(int num)
1428 Mmsg0(errmsg, _("Bad call to bsf. Device not open\n"));
1429 Emsg0(M_FATAL, 0, errmsg);
1434 Mmsg1(errmsg, _("Device %s cannot BSF because it is not a tape.\n"),
1445 mt_com.mt_op = MTBSF;
1446 mt_com.mt_count = num;
1447 stat = tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1451 Mmsg2(errmsg, _("ioctl MTBSF error on %s. ERR=%s.\n"),
1452 print_name(), be.strerror());
1459 * Foward space num records
1460 * Returns: false on failure
1463 bool DEVICE::fsr(int num)
1470 Mmsg0(errmsg, _("Bad call to fsr. Device not open\n"));
1471 Emsg0(M_FATAL, 0, errmsg);
1479 if (!has_cap(CAP_FSR)) {
1480 Mmsg1(errmsg, _("ioctl MTFSR not permitted on %s.\n"), print_name());
1484 Dmsg1(29, "fsr %d\n", num);
1485 mt_com.mt_op = MTFSR;
1486 mt_com.mt_count = num;
1487 stat = tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1493 struct mtget mt_stat;
1495 Dmsg1(100, "FSF fail: ERR=%s\n", be.strerror());
1496 if (dev_get_os_pos(this, &mt_stat)) {
1497 Dmsg4(100, "Adjust from %d:%d to %d:%d\n", file,
1498 block_num, mt_stat.mt_fileno, mt_stat.mt_blkno);
1499 file = mt_stat.mt_fileno;
1500 block_num = mt_stat.mt_blkno;
1508 Mmsg3(errmsg, _("ioctl MTFSR %d error on %s. ERR=%s.\n"),
1509 num, print_name(), be.strerror());
1515 * Backward space a record
1516 * Returns: false on failure
1519 bool DEVICE::bsr(int num)
1526 Mmsg0(errmsg, _("Bad call to bsr_dev. Device not open\n"));
1527 Emsg0(M_FATAL, 0, errmsg);
1535 if (!has_cap(CAP_BSR)) {
1536 Mmsg1(errmsg, _("ioctl MTBSR not permitted on %s.\n"), print_name());
1540 Dmsg0(29, "bsr_dev\n");
1544 mt_com.mt_op = MTBSR;
1545 mt_com.mt_count = num;
1546 stat = tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1550 Mmsg2(errmsg, _("ioctl MTBSR error on %s. ERR=%s.\n"),
1551 print_name(), be.strerror());
1556 void DEVICE::lock_door()
1560 mt_com.mt_op = MTLOCK;
1561 mt_com.mt_count = 1;
1562 tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1566 void DEVICE::unlock_door()
1570 mt_com.mt_op = MTUNLOCK;
1571 mt_com.mt_count = 1;
1572 tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1578 * Reposition the device to file, block
1579 * Returns: false on failure
1582 bool DEVICE::reposition(DCR *dcr, uint32_t rfile, uint32_t rblock)
1586 Mmsg0(errmsg, _("Bad call to reposition. Device not open\n"));
1587 Emsg0(M_FATAL, 0, errmsg);
1592 boffset_t pos = (((boffset_t)rfile)<<32) | rblock;
1593 Dmsg1(100, "===== lseek to %d\n", (int)pos);
1594 if (lseek(dcr, pos, SEEK_SET) == (boffset_t)-1) {
1597 Mmsg2(errmsg, _("lseek error on %s. ERR=%s.\n"),
1598 print_name(), be.strerror());
1607 /* After this point, we are tape only */
1608 Dmsg4(100, "reposition from %u:%u to %u:%u\n", file, block_num, rfile, rblock);
1610 Dmsg0(100, "Rewind\n");
1611 if (!rewind(NULL)) {
1616 Dmsg1(100, "fsf %d\n", rfile-file);
1617 if (!fsf(rfile-file)) {
1618 Dmsg1(100, "fsf failed! ERR=%s\n", bstrerror());
1621 Dmsg2(100, "wanted_file=%d at_file=%d\n", rfile, file);
1623 if (rblock < block_num) {
1624 Dmsg2(100, "wanted_blk=%d at_blk=%d\n", rblock, block_num);
1625 Dmsg0(100, "bsf 1\n");
1627 Dmsg0(100, "fsf 1\n");
1629 Dmsg2(100, "wanted_blk=%d at_blk=%d\n", rblock, block_num);
1631 if (has_cap(CAP_POSITIONBLOCKS) && rblock > block_num) {
1632 /* Ignore errors as Bacula can read to the correct block */
1633 Dmsg1(100, "fsr %d\n", rblock-block_num);
1634 return fsr(rblock-block_num);
1636 while (rblock > block_num) {
1637 if (!read_block_from_dev(dcr, NO_BLOCK_NUMBER_CHECK)) {
1640 Dmsg2(30, "Failed to find requested block on %s: ERR=%s",
1641 print_name(), be.strerror());
1644 Dmsg2(300, "moving forward wanted_blk=%d at_blk=%d\n", rblock, block_num);
1653 * Write an end of file on the device
1654 * Returns: true on success
1657 bool DEVICE::weof(int num)
1661 Dmsg0(129, "weof_dev\n");
1665 Mmsg0(errmsg, _("Bad call to weof_dev. Device not open\n"));
1666 Emsg0(M_FATAL, 0, errmsg);
1674 if (!can_append()) {
1675 Mmsg0(errmsg, _("Attempt to WEOF on non-appendable Volume\n"));
1676 Emsg0(M_FATAL, 0, errmsg);
1682 mt_com.mt_op = MTWEOF;
1683 mt_com.mt_count = num;
1684 stat = tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1693 Mmsg2(errmsg, _("ioctl MTWEOF error on %s. ERR=%s.\n"),
1694 print_name(), be.strerror());
1702 * If implemented in system, clear the tape
1705 void DEVICE::clrerror(int func)
1707 const char *msg = NULL;
1710 dev_errno = errno; /* save errno */
1712 VolCatInfo.VolCatErrors++;
1719 if (errno == ENOTTY || errno == ENOSYS) { /* Function not implemented */
1722 break; /* ignore message printed later */
1725 clear_cap(CAP_EOF); /* turn off feature */
1730 clear_cap(CAP_EOM); /* turn off feature */
1735 clear_cap(CAP_FSF); /* turn off feature */
1739 clear_cap(CAP_BSF); /* turn off feature */
1743 clear_cap(CAP_FSR); /* turn off feature */
1747 clear_cap(CAP_BSR); /* turn off feature */
1757 #ifdef MTSETDRVBUFFER
1758 case MTSETDRVBUFFER:
1759 msg = "MTSETDRVBUFFER";
1792 bsnprintf(buf, sizeof(buf), _("unknown func code %d"), func);
1798 Mmsg1(errmsg, _("I/O function \"%s\" not supported on this device.\n"), msg);
1799 Emsg0(M_ERROR, 0, errmsg);
1804 * Now we try different methods of clearing the error
1805 * status on the drive so that it is not locked for
1806 * further operations.
1809 /* On some systems such as NetBSD, this clears all errors */
1812 /* Found on Linux */
1816 mt_com.mt_op = MTIOCLRERR;
1817 mt_com.mt_count = 1;
1818 /* Clear any error condition on the tape */
1819 tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1820 Dmsg0(200, "Did MTIOCLRERR\n");
1824 /* Typically on FreeBSD */
1828 /* Read and clear SCSI error status */
1829 union mterrstat mt_errstat;
1830 Dmsg2(200, "Doing MTIOCERRSTAT errno=%d ERR=%s\n", dev_errno,
1831 be.strerror(dev_errno));
1832 tape_ioctl(m_fd, MTIOCERRSTAT, (char *)&mt_errstat);
1836 /* Clear Subsystem Exception OSF1 */
1840 mt_com.mt_op = MTCSE;
1841 mt_com.mt_count = 1;
1842 /* Clear any error condition on the tape */
1843 tape_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
1844 Dmsg0(200, "Did MTCSE\n");
1851 * Clear volume header
1853 void DEVICE::clear_volhdr()
1856 Dmsg1(100, "Clear volhdr vol=%s\n", VolHdr.VolumeName);
1857 memset(&VolHdr, 0, sizeof(VolHdr));
1864 void DEVICE::close()
1866 Dmsg1(100, "close_dev %s\n", print_name());
1867 if (has_cap(CAP_OFFLINEUNMOUNT)) {
1872 Dmsg2(100, "device %s already closed vol=%s\n", print_name(),
1874 return; /* already closed */
1886 /* Clean up device packet so it can be reused */
1888 state &= ~(ST_LABEL|ST_READ|ST_APPEND|ST_EOT|ST_WEOT|ST_EOF);
1889 label_type = B_BACULA_LABEL;
1890 file = block_num = 0;
1893 EndFile = EndBlock = 0;
1895 Slot = -1; /* unknown slot */
1897 memset(&VolCatInfo, 0, sizeof(VolCatInfo));
1899 stop_thread_timer(tid);
1905 * This call closes the device, but it is used in DVD handling
1906 * where we close one part and then open the next part. The
1907 * difference between close_part() and close() is that close_part()
1908 * saves the state information of the device (e.g. the Volume lable,
1909 * the Volume Catalog record, ... This permits opening and closing
1910 * the Volume parts multiple times without losing track of what the
1911 * main Volume parameters are.
1913 void DEVICE::close_part(DCR *dcr)
1915 VOLUME_LABEL saveVolHdr;
1916 VOLUME_CAT_INFO saveVolCatInfo; /* Volume Catalog Information */
1919 saveVolHdr = VolHdr; /* structure assignment */
1920 saveVolCatInfo = VolCatInfo; /* structure assignment */
1921 close(); /* close current part */
1922 VolHdr = saveVolHdr; /* structure assignment */
1923 VolCatInfo = saveVolCatInfo; /* structure assignment */
1924 dcr->VolCatInfo = saveVolCatInfo; /* structure assignment */
1927 boffset_t DEVICE::lseek(DCR *dcr, boffset_t offset, int whence)
1931 return lseek_dvd(dcr, offset, whence);
1933 #if defined(HAVE_WIN32)
1934 return ::_lseeki64(m_fd, (__int64)offset, whence);
1936 return ::lseek(m_fd, (off_t)offset, whence);
1943 bool DEVICE::truncate(DCR *dcr) /* We need the DCR for DVD-writing */
1945 Dmsg1(100, "truncate %s\n", print_name());
1948 /* maybe we should rewind and write and eof ???? */
1949 return true; /* we don't really truncate tapes */
1951 return truncate_dvd(dcr);
1953 /* ***FIXME*** we really need to unlink() the file so that
1954 * its name can be changed for a relabel.
1956 if (ftruncate(m_fd, 0) != 0) {
1958 Mmsg2(errmsg, _("Unable to truncate device %s. ERR=%s\n"),
1959 print_name(), be.strerror());
1967 /* Mount the device.
1968 * If timeout, wait until the mount command returns 0.
1969 * If !timeout, try to mount the device only once.
1971 bool DEVICE::mount(int timeout)
1973 Dmsg0(190, "Enter mount\n");
1976 } else if (requires_mount()) {
1977 return do_mount(1, timeout);
1982 /* Unmount the device
1983 * If timeout, wait until the unmount command returns 0.
1984 * If !timeout, try to unmount the device only once.
1986 bool DEVICE::unmount(int timeout)
1988 Dmsg0(90, "Enter unmount\n");
1990 return do_mount(0, timeout);
1995 /* (Un)mount the device */
1996 bool DEVICE::do_mount(int mount, int dotimeout)
1998 POOL_MEM ocmd(PM_FNAME);
2001 int status, timeout;
2003 sm_check(__FILE__, __LINE__, false);
2006 Dmsg0(200, "======= mount=1\n");
2009 icmd = device->mount_command;
2011 if (!is_mounted()) {
2012 Dmsg0(200, "======= mount=0\n");
2015 icmd = device->unmount_command;
2018 clear_freespace_ok();
2019 edit_mount_codes(ocmd, icmd);
2021 Dmsg2(100, "do_mount: cmd=%s mounted=%d\n", ocmd.c_str(), !!is_mounted());
2024 /* Try at most 1 time to (un)mount the device. This should perhaps be configurable. */
2029 results = get_memory(4000);
2032 /* If busy retry each second */
2033 Dmsg1(20, "do_mount run_prog=%s\n", ocmd.c_str());
2034 while ((status = run_program_full_output(ocmd.c_str(),
2035 max_open_wait/2, results)) != 0) {
2036 /* Doesn't work with internationalization (This is not a problem) */
2037 if (mount && fnmatch("*is already mounted on*", results, 0) == 0) {
2040 if (!mount && fnmatch("* not mounted*", results, 0) == 0) {
2043 if (timeout-- > 0) {
2044 /* Sometimes the device cannot be mounted because it is already mounted.
2045 * Try to unmount it, then remount it */
2047 Dmsg1(400, "Trying to unmount the device %s...\n", print_name());
2055 Dmsg5(40, "Device %s cannot be %smounted. stat=%d result=%s ERR=%s\n", print_name(),
2056 (mount ? "" : "un"), status, results, be.strerror(status));
2057 Mmsg(errmsg, _("Device %s cannot be %smounted. ERR=%s\n"),
2058 print_name(), (mount ? "" : "un"), be.strerror(status));
2060 Dmsg4(40, "Device %s cannot be %smounted. stat=%d ERR=%s\n", print_name(),
2061 (mount ? "" : "un"), status, results);
2062 Mmsg(errmsg, _("Device %s cannot be %smounted. ERR=%s\n"),
2063 print_name(), (mount ? "" : "un"), results);
2066 * Now, just to be sure it is not mounted, try to read the
2070 struct dirent *entry, *result;
2074 name_max = pathconf(".", _PC_NAME_MAX);
2075 if (name_max < 1024) {
2079 if (!(dp = opendir(device->mount_point))) {
2082 Dmsg3(29, "do_mount: failed to open dir %s (dev=%s), ERR=%s\n",
2083 device->mount_point, print_name(), be.strerror());
2087 entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
2090 if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
2092 Dmsg2(129, "do_mount: failed to find suitable file in dir %s (dev=%s)\n",
2093 device->mount_point, print_name());
2096 if ((strcmp(result->d_name, ".")) && (strcmp(result->d_name, "..")) && (strcmp(result->d_name, ".keep"))) {
2097 count++; /* result->d_name != ., .. or .keep (Gentoo-specific) */
2100 Dmsg2(129, "do_mount: ignoring %s in %s\n", result->d_name, device->mount_point);
2106 Dmsg1(29, "do_mount: got %d files in the mount point (not counting ., .. and .keep)\n", count);
2109 /* If we got more than ., .. and .keep */
2110 /* there must be something mounted */
2112 Dmsg1(100, "Did Mount by count=%d\n", count);
2115 /* An unmount request. We failed to unmount - report an error */
2117 free_pool_memory(results);
2118 Dmsg0(200, "== error mount=1 wanted unmount\n");
2124 sm_check(__FILE__, __LINE__, false);
2125 free_pool_memory(results);
2126 Dmsg0(200, "============ mount=0\n");
2130 set_mounted(mount); /* set/clear mounted flag */
2131 free_pool_memory(results);
2132 /* Do not check free space when unmounting */
2133 if (mount && !update_freespace()) {
2136 Dmsg1(200, "============ mount=%d\n", mount);
2141 * Edit codes into (Un)MountCommand, Write(First)PartCommand
2143 * %a = archive device name
2144 * %e = erase (set if cannot mount and first part)
2147 * %v = last part name
2149 * omsg = edited output message
2150 * imsg = input string containing edit codes (%x)
2153 void DEVICE::edit_mount_codes(POOL_MEM &omsg, const char *imsg)
2159 POOL_MEM archive_name(PM_FNAME);
2161 omsg.c_str()[0] = 0;
2162 Dmsg1(800, "edit_mount_codes: %s\n", imsg);
2163 for (p=imsg; *p; p++) {
2173 if (num_dvd_parts == 0) {
2174 if (truncating || blank_dvd) {
2184 bsnprintf(add, sizeof(add), "%d", part);
2188 str = device->mount_point;
2191 make_spooled_dvd_filename(this, archive_name);
2192 str = archive_name.c_str();
2206 Dmsg1(1900, "add_str %s\n", str);
2207 pm_strcat(omsg, (char *)str);
2208 Dmsg1(1800, "omsg=%s\n", omsg.c_str());
2212 /* return the last timer interval (ms) */
2213 btime_t DEVICE::get_timer_count()
2215 btime_t old = last_timer;
2216 last_timer = get_current_btime();
2217 return last_timer - old;
2221 ssize_t DEVICE::read(void *buf, size_t len)
2227 if (this->is_tape()) {
2228 read_len = tape_read(m_fd, buf, len);
2230 read_len = ::read(m_fd, buf, len);
2233 last_tick = get_timer_count();
2235 DevReadTime += last_tick;
2236 VolCatInfo.VolReadTime += last_tick;
2238 if (read_len > 0) { /* skip error */
2239 DevReadBytes += read_len;
2246 ssize_t DEVICE::write(const void *buf, size_t len)
2252 if (this->is_tape()) {
2253 write_len = tape_write(m_fd, buf, len);
2255 write_len = ::write(m_fd, buf, len);
2258 last_tick = get_timer_count();
2260 DevWriteTime += last_tick;
2261 VolCatInfo.VolWriteTime += last_tick;
2263 if (write_len > 0) { /* skip error */
2264 DevWriteBytes += write_len;
2270 /* Return the resource name for the device */
2271 const char *DEVICE::name() const
2273 return device->hdr.name;
2276 /* Returns file position on tape or -1 */
2277 int32_t DEVICE::get_os_tape_file()
2279 struct mtget mt_stat;
2281 if (has_cap(CAP_MTIOCGET) &&
2282 tape_ioctl(m_fd, MTIOCGET, (char *)&mt_stat) == 0) {
2283 return mt_stat.mt_fileno;
2289 dev_vol_name(DEVICE *dev)
2291 return dev->VolCatInfo.VolCatName;
2296 * Free memory allocated for the device
2298 void DEVICE::term(void)
2300 Dmsg1(900, "term dev: %s\n", print_name());
2303 free_memory(dev_name);
2307 free_memory(prt_name);
2311 free_pool_memory(errmsg);
2314 pthread_mutex_destroy(&m_mutex);
2315 pthread_cond_destroy(&wait);
2316 pthread_cond_destroy(&wait_next_vol);
2317 pthread_mutex_destroy(&spool_mutex);
2318 // rwl_destroy(&lock);
2319 if (attached_dcrs) {
2320 delete attached_dcrs;
2321 attached_dcrs = NULL;
2330 * This routine initializes the device wait timers
2332 void init_device_wait_timers(DCR *dcr)
2334 DEVICE *dev = dcr->dev;
2335 JCR *jcr = dcr->jcr;
2337 /* ******FIXME******* put these on config variables */
2338 dev->min_wait = 60 * 60;
2339 dev->max_wait = 24 * 60 * 60;
2340 dev->max_num_wait = 9; /* 5 waits =~ 1 day, then 1 day at a time */
2341 dev->wait_sec = dev->min_wait;
2342 dev->rem_wait_sec = dev->wait_sec;
2345 dev->BadVolName[0] = 0;
2347 jcr->min_wait = 60 * 60;
2348 jcr->max_wait = 24 * 60 * 60;
2349 jcr->max_num_wait = 9; /* 5 waits =~ 1 day, then 1 day at a time */
2350 jcr->wait_sec = jcr->min_wait;
2351 jcr->rem_wait_sec = jcr->wait_sec;
2356 void init_jcr_device_wait_timers(JCR *jcr)
2358 /* ******FIXME******* put these on config variables */
2359 jcr->min_wait = 60 * 60;
2360 jcr->max_wait = 24 * 60 * 60;
2361 jcr->max_num_wait = 9; /* 5 waits =~ 1 day, then 1 day at a time */
2362 jcr->wait_sec = jcr->min_wait;
2363 jcr->rem_wait_sec = jcr->wait_sec;
2369 * The dev timers are used for waiting on a particular device
2371 * Returns: true if time doubled
2372 * false if max time expired
2374 bool double_dev_wait_time(DEVICE *dev)
2376 dev->wait_sec *= 2; /* double wait time */
2377 if (dev->wait_sec > dev->max_wait) { /* but not longer than maxtime */
2378 dev->wait_sec = dev->max_wait;
2381 dev->rem_wait_sec = dev->wait_sec;
2382 if (dev->num_wait >= dev->max_num_wait) {
2389 void set_os_device_parameters(DCR *dcr)
2391 DEVICE *dev = dcr->dev;
2393 #if defined(HAVE_LINUX_OS) || defined(HAVE_WIN32)
2396 Dmsg0(050, "In set_os_device_parameters\n");
2397 #if defined(MTSETBLK)
2398 if (dev->min_block_size == dev->max_block_size &&
2399 dev->min_block_size == 0) { /* variable block mode */
2400 mt_com.mt_op = MTSETBLK;
2401 mt_com.mt_count = 0;
2402 Dmsg0(050, "Set block size to zero\n");
2403 if (tape_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
2404 dev->clrerror(MTSETBLK);
2408 #if defined(MTSETDRVBUFFER)
2409 if (getpid() == 0) { /* Only root can do this */
2410 mt_com.mt_op = MTSETDRVBUFFER;
2411 mt_com.mt_count = MT_ST_CLEARBOOLEANS;
2412 if (!dev->has_cap(CAP_TWOEOF)) {
2413 mt_com.mt_count |= MT_ST_TWO_FM;
2415 if (dev->has_cap(CAP_EOM)) {
2416 mt_com.mt_count |= MT_ST_FAST_MTEOM;
2418 Dmsg0(050, "MTSETDRVBUFFER\n");
2419 if (tape_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
2420 dev->clrerror(MTSETDRVBUFFER);
2427 #ifdef HAVE_NETBSD_OS
2429 if (dev->min_block_size == dev->max_block_size &&
2430 dev->min_block_size == 0) { /* variable block mode */
2431 mt_com.mt_op = MTSETBSIZ;
2432 mt_com.mt_count = 0;
2433 if (tape_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
2434 dev->clrerror(MTSETBSIZ);
2436 /* Get notified at logical end of tape */
2437 mt_com.mt_op = MTEWARN;
2438 mt_com.mt_count = 1;
2439 if (tape_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
2440 dev->clrerror(MTEWARN);
2446 #if HAVE_FREEBSD_OS || HAVE_OPENBSD_OS
2448 if (dev->min_block_size == dev->max_block_size &&
2449 dev->min_block_size == 0) { /* variable block mode */
2450 mt_com.mt_op = MTSETBSIZ;
2451 mt_com.mt_count = 0;
2452 if (tape_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
2453 dev->clrerror(MTSETBSIZ);
2456 #if defined(MTIOCSETEOTMODEL)
2458 if (dev->has_cap(CAP_TWOEOF)) {
2463 if (ioctl(dev->fd(), MTIOCSETEOTMODEL, (caddr_t)&neof) < 0) {
2465 dev->dev_errno = errno; /* save errno */
2466 Mmsg2(dev->errmsg, _("Unable to set eotmodel on device %s: ERR=%s\n"),
2467 dev->print_name(), be.strerror(dev->dev_errno));
2468 Jmsg(dcr->jcr, M_FATAL, 0, dev->errmsg);
2476 if (dev->min_block_size == dev->max_block_size &&
2477 dev->min_block_size == 0) { /* variable block mode */
2478 mt_com.mt_op = MTSRSZ;
2479 mt_com.mt_count = 0;
2480 if (tape_ioctl(dev->fd(), MTIOCTOP, (char *)&mt_com) < 0) {
2481 dev->clrerror(MTSRSZ);
2488 static bool dev_get_os_pos(DEVICE *dev, struct mtget *mt_stat)
2490 Dmsg0(050, "dev_get_os_pos\n");
2491 return dev->has_cap(CAP_MTIOCGET) &&
2492 tape_ioctl(dev->fd(), MTIOCGET, (char *)mt_stat) == 0 &&
2493 mt_stat->mt_fileno >= 0;
2496 static char *modes[] = {
2497 "CREATE_READ_WRITE",
2504 static char *mode_to_str(int mode)
2506 static char buf[100];
2507 if (mode < 1 || mode > 4) {
2508 bsnprintf(buf, sizeof(buf), "BAD mode=%d", mode);
2511 return modes[mode-1];