3 * dev.c -- low level operations on device (storage device)
7 * NOTE!!!! None of these routines are reentrant. You must
8 * use lock_device() and unlock_device() at a higher level,
9 * or use the xxx_device() equivalents. By moving the
10 * thread synchronization to a higher level, we permit
11 * the higher level routines to "seize" the device and
12 * to carry out operations without worrying about who
13 * set what lock (i.e. race conditions).
15 * Note, this is the device dependent code, and my have
16 * to be modified for each system, but is meant to
17 * be as "generic" as possible.
19 * The purpose of this code is to develop a SIMPLE Storage
20 * daemon. More complicated coding (double buffering, writer
21 * thread, ...) is left for a later version.
23 * Unfortunately, I have had to add more and more complication
24 * to this code. This was not foreseen as noted above, and as
25 * a consequence has lead to something more contorted than is
26 * really necessary -- KES. Note, this contortion has been
27 * corrected to a large extent by a rewrite (Apr MMI).
32 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
34 This program is free software; you can redistribute it and/or
35 modify it under the terms of the GNU General Public License as
36 published by the Free Software Foundation; either version 2 of
37 the License, or (at your option) any later version.
39 This program is distributed in the hope that it will be useful,
40 but WITHOUT ANY WARRANTY; without even the implied warranty of
41 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
42 General Public License for more details.
44 You should have received a copy of the GNU General Public
45 License along with this program; if not, write to the Free
46 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
52 * Handling I/O errors and end of tape conditions are a bit tricky.
53 * This is how it is currently done when writting.
54 * On either an I/O error or end of tape,
55 * we will stop writing on the physical device (no I/O recovery is
56 * attempted at least in this daemon). The state flag will be sent
57 * to include ST_EOT, which is ephimeral, and ST_WEOT, which is
58 * persistent. Lots of routines clear ST_EOT, but ST_WEOT is
59 * cleared only when the problem goes away. Now when ST_WEOT
60 * is set all calls to write_dev() are handled as usual. However,
61 * in write_block() instead of attempting to write the block to
62 * the physical device, it is chained into a list of blocks written
63 * after the EOT condition. In addition, all threads are blocked
64 * from writing on the tape by calling lock(), and thread other
65 * than the first thread to hit the EOT will block on a condition
66 * variable. The first thread to hit the EOT will continue to
67 * be able to read and write the tape (he sort of tunnels through
68 * the locking mechanism -- see lock() for details).
70 * Now presumably somewhere higher in the chain of command
71 * (device.c), someone will notice the EOT condition and
72 * get a new tape up, get the tape label read, and mark
73 * the label for rewriting. Then this higher level routine
74 * will write the unwritten buffer to the new volume.
75 * Finally, he will release
76 * any blocked threads by doing a broadcast on the condition
77 * variable. At that point, we should be totally back in
78 * business with no lost data.
85 /* Forward referenced functions */
86 int dev_is_tape(DEVICE *dev);
87 void clrerror_dev(DEVICE *dev, int func);
88 int fsr_dev(DEVICE *dev, int num);
90 extern int debug_level;
93 * Allocate and initialize the DEVICE structure
94 * Note, if dev is non-NULL, it is already allocated,
95 * thus we neither allocate it nor free it. This allows
96 * the caller to put the packet in shared memory.
98 * Note, for a tape, the dev_name is the device name
99 * (e.g. /dev/nst0), and for a file, the device name
100 * is the directory in which the file will be placed.
104 init_dev(DEVICE *dev, char *dev_name)
110 /* Check that device is available */
111 if (stat(dev_name, &statp) < 0) {
113 dev->dev_errno = errno;
115 Emsg2(M_FATAL, 0, "Unable to stat device %s : %s\n", dev_name, strerror(errno));
119 if (S_ISDIR(statp.st_mode)) {
121 } else if (S_ISCHR(statp.st_mode)) {
125 dev->dev_errno = ENODEV;
127 Emsg2(M_FATAL, 0, "%s is an unknown device type. Must be tape or directory. st_mode=%x\n",
128 dev_name, statp.st_mode);
132 dev = (DEVICE *)get_memory(sizeof(DEVICE));
133 memset(dev, 0, sizeof(DEVICE));
134 dev->state = ST_MALLOC;
136 memset(dev, 0, sizeof(DEVICE));
139 dev->state |= ST_TAPE;
141 dev->dev_name = (char *) get_memory(strlen(dev_name)+1);
142 strcpy(dev->dev_name, dev_name);
144 dev->errmsg = (char *) get_pool_memory(PM_EMSG);
147 if ((errstat = pthread_mutex_init(&dev->mutex, NULL)) != 0) {
148 dev->dev_errno = errstat;
149 Mmsg1(&dev->errmsg, _("Unable to init mutex: ERR=%s\n"), strerror(errstat));
150 Emsg0(M_FATAL, 0, dev->errmsg);
152 if ((errstat = pthread_cond_init(&dev->wait, NULL)) != 0) {
153 dev->dev_errno = errstat;
154 Mmsg1(&dev->errmsg, _("Unable to init cond variable: ERR=%s\n"), strerror(errstat));
155 Emsg0(M_FATAL, 0, dev->errmsg);
157 if ((errstat = pthread_cond_init(&dev->wait_next_vol, NULL)) != 0) {
158 dev->dev_errno = errstat;
159 Mmsg1(&dev->errmsg, _("Unable to init cond variable: ERR=%s\n"), strerror(errstat));
160 Emsg0(M_FATAL, 0, dev->errmsg);
163 Dmsg2(29, "init_dev: tape=%d dev_name=%s\n", dev_is_tape(dev), dev->dev_name);
167 /* Open the device with the operating system and
168 * initialize buffer pointers.
170 * Note, for a tape, the VolName is the name we give to the
171 * volume (not really used here), but for a file, the
172 * VolName represents the name of the file to be created/opened.
173 * In the case of a file, the full name is the device name
174 * (archive_name) with the VolName concatenated.
177 open_dev(DEVICE *dev, char *VolName, int mode)
179 POOLMEM *archive_name;
181 if (dev->state & ST_OPENED) {
183 * *****FIXME***** how to handle two threads wanting
184 * different volumes mounted???? E.g. one is waiting
185 * for the next volume to be mounted, and a new job
186 * starts and snatches up the device.
188 if (VolName && strcmp(dev->VolCatInfo.VolCatName, VolName) != 0) {
192 Mmsg2(&dev->errmsg, _("WARNING!!!! device %s opened %d times!!!\n"),
193 dev->dev_name, dev->use_count);
194 Emsg0(M_WARNING, 0, dev->errmsg);
198 strcpy(dev->VolCatInfo.VolCatName, VolName);
201 Dmsg3(29, "open_dev: tape=%d dev_name=%s vol=%s\n", dev_is_tape(dev),
202 dev->dev_name, dev->VolCatInfo.VolCatName);
203 dev->state &= ~(ST_LABEL|ST_APPEND|ST_READ|ST_EOT|ST_WEOT|ST_EOF);
204 if (dev->state & ST_TAPE) {
205 Dmsg0(29, "open_dev: device is tape\n");
206 if (mode == READ_WRITE) {
207 dev->mode = O_RDWR | O_BINARY;
209 dev->mode = O_RDONLY | O_BINARY;
211 if ((dev->fd = open(dev->dev_name, dev->mode, MODE_RW)) < 0) {
212 dev->dev_errno = errno;
213 Mmsg2(&dev->errmsg, _("stored: unable to open device %s: ERR=%s\n"),
214 dev->dev_name, strerror(dev->dev_errno));
215 Emsg0(M_FATAL, 0, dev->errmsg);
218 dev->state |= ST_OPENED;
220 update_pos_dev(dev); /* update position */
222 Dmsg1(29, "open_dev: tape %d opened\n", dev->fd);
224 archive_name = get_pool_memory(PM_FNAME);
225 strcpy(archive_name, dev->dev_name);
226 if (archive_name[strlen(archive_name)] != '/') {
227 strcat(archive_name, "/");
229 strcat(archive_name, VolName);
230 Dmsg1(29, "open_dev: device is disk %s\n", archive_name);
231 if (mode == READ_WRITE) {
232 dev->mode = O_CREAT | O_RDWR | O_BINARY;
234 dev->mode = O_RDONLY | O_BINARY;
236 if ((dev->fd = open(archive_name, dev->mode, MODE_RW)) < 0) {
237 dev->dev_errno = errno;
238 Mmsg2(&dev->errmsg, _("Could not open: %s, ERR=%s\n"), archive_name, strerror(dev->dev_errno));
239 Emsg0(M_FATAL, 0, dev->errmsg);
242 dev->state |= ST_OPENED;
244 update_pos_dev(dev); /* update position */
246 Dmsg1(29, "open_dev: disk fd=%d opened\n", dev->fd);
247 free_pool_memory(archive_name);
254 * Returns: 1 on success
257 int rewind_dev(DEVICE *dev)
262 Dmsg0(29, "rewind_dev\n");
264 dev->dev_errno = EBADF;
265 Mmsg1(&dev->errmsg, _("Bad call to rewind_dev. Device %s not open\n"),
267 Emsg0(M_FATAL, 0, dev->errmsg);
270 dev->state &= ~(ST_APPEND|ST_READ|ST_EOT | ST_EOF | ST_WEOT); /* remove EOF/EOT flags */
271 dev->block_num = dev->file = 0;
273 if (dev->state & ST_TAPE) {
274 mt_com.mt_op = MTREW;
276 /* If we get an I/O error on rewind, it is probably because
277 * the drive is actually busy. We loop for (about 5 minutes)
278 * retrying every 5 seconds.
280 for (i=dev->max_rewind_wait; ; i -= 5) {
281 if (ioctl(dev->fd, MTIOCTOP, (char *)&mt_com) < 0) {
282 if (i == dev->max_rewind_wait) {
283 Dmsg1(200, "Rewind error, %s. retrying ...\n", strerror(errno));
285 clrerror_dev(dev, MTREW);
286 if (dev->dev_errno == EIO && i > 0) {
287 Dmsg0(200, "Sleeping 5 seconds.\n");
291 Mmsg2(&dev->errmsg, _("Rewind error on %s. ERR=%s.\n"),
292 dev->dev_name, strerror(dev->dev_errno));
298 if (lseek(dev->fd, 0, SEEK_SET) < 0) {
299 dev->dev_errno = errno;
300 Mmsg2(&dev->errmsg, _("lseek error on %s. ERR=%s.\n"),
301 dev->dev_name, strerror(dev->dev_errno));
309 * Position device to end of medium (end of data)
310 * Returns: 1 on succes
317 struct mtget mt_stat;
321 Dmsg0(29, "eod_dev\n");
322 if (dev->state & ST_EOT) {
325 dev->state &= ~(ST_EOF); /* remove EOF flags */
326 dev->block_num = dev->file = 0;
328 if (!(dev->state & ST_TAPE)) {
329 pos = lseek(dev->fd, 0, SEEK_END);
332 dev->state |= ST_EOT;
337 if (dev->capabilities & CAP_EOM) {
338 mt_com.mt_op = MTEOM;
340 if ((stat=ioctl(dev->fd, MTIOCTOP, (char *)&mt_com)) < 0) {
341 Dmsg1(50, "ioctl error: %s\n", strerror(dev->dev_errno));
342 clrerror_dev(dev, mt_com.mt_op);
344 Mmsg2(&dev->errmsg, _("ioctl MTEOM error on %s. ERR=%s.\n"),
345 dev->dev_name, strerror(dev->dev_errno));
348 if (ioctl(dev->fd, MTIOCGET, (char *)&mt_stat) < 0) {
349 dev->dev_errno = errno;
350 Mmsg2(&dev->errmsg, _("ioctl MTIOCGET error on %s. ERR=%s.\n"),
351 dev->dev_name, strerror(dev->dev_errno));
354 Dmsg2(200, "EOD file=%d block=%d\n", mt_stat.mt_fileno, mt_stat.mt_blkno);
355 dev->file = mt_stat.mt_fileno;
358 * Rewind then use FSF until EOT reached
361 if (!rewind_dev(dev)) {
364 while (!(dev->state & ST_EOT)) {
365 Dmsg0(200, "Do fsf 1\n");
366 if (fsf_dev(dev, 1) < 0) {
367 Dmsg0(200, "fsf_dev return < 0\n");
372 update_pos_dev(dev); /* update position */
373 Dmsg1(200, "EOD dev->file=%d\n", dev->file);
378 * Set the position of the device.
379 * Returns: 1 on succes
382 int update_pos_dev(DEVICE *dev)
385 struct mtget mt_stat;
391 dev->dev_errno = EBADF;
392 Mmsg0(&dev->errmsg, _("Bad device call. Archive not open\n"));
393 Emsg0(M_FATAL, 0, dev->errmsg);
397 /* Find out where we are */
398 if (!(dev->state & ST_TAPE)) {
401 pos = lseek(dev->fd, 0, SEEK_CUR);
403 Dmsg1(200, "Seek error: ERR=%s\n", strerror(dev->dev_errno));
405 dev->dev_errno = errno;
406 Mmsg2(&dev->errmsg, _("lseek error on %s. ERR=%s.\n"),
407 dev->dev_name, strerror(dev->dev_errno));
414 #ifdef REALLY_IMPLEMENTED
415 if (ioctl(dev->fd, MTIOCGET, (char *)&mt_stat) < 0) {
416 Dmsg1(50, "MTIOCGET error: %s\n", strerror(dev->dev_errno));
417 dev->dev_errno = errno;
418 Mmsg2(&dev->errmsg, _("ioctl MTIOCGET error on %s. ERR=%s.\n"),
419 dev->dev_name, strerror(dev->dev_errno));
430 * Return the status of the device. This was meant
431 * to be a generic routine. Unfortunately, it doesn't
432 * seem possible (at least I do not know how to do it
433 * currently), which means that for the moment, this
434 * routine has very little value.
436 * Returns: 1 on success
440 status_dev(DEVICE *dev, uint32_t *status)
442 struct mtget mt_stat;
445 if (dev->state & (ST_EOT | ST_WEOT)) {
449 if (dev->state & ST_EOF) {
453 if (dev->state & ST_TAPE) {
455 Dmsg0(-20," Driver status:");
456 Dmsg2(-20," file=%d block=%d\n", dev->file, dev->block_num);
457 if (ioctl(dev->fd, MTIOCGET, (char *)&mt_stat) < 0) {
458 dev->dev_errno = errno;
459 Mmsg2(&dev->errmsg, _("ioctl MTIOCGET error on %s. ERR=%s.\n"),
460 dev->dev_name, strerror(dev->dev_errno));
463 Dmsg0(-20, " Device status:");
465 #if defined(HAVE_LINUX_OS)
466 if (GMT_EOF(mt_stat.mt_gstat)) {
470 if (GMT_BOT(mt_stat.mt_gstat)) {
474 if (GMT_EOT(mt_stat.mt_gstat)) {
478 if (GMT_SM(mt_stat.mt_gstat)) {
482 if (GMT_EOD(mt_stat.mt_gstat)) {
486 if (GMT_WR_PROT(mt_stat.mt_gstat)) {
488 Dmsg0(-20, " WR_PROT");
490 if (GMT_ONLINE(mt_stat.mt_gstat)) {
492 Dmsg0(-20, " ONLINE");
494 if (GMT_DR_OPEN(mt_stat.mt_gstat)) {
496 Dmsg0(-20, " DR_OPEN");
498 if (GMT_IM_REP_EN(mt_stat.mt_gstat)) {
499 stat |= MT_IM_REP_EN;
500 Dmsg0(-20, " IM_REP_EN");
502 #endif /* !SunOS && !OSF */
503 Dmsg2(-20, " file=%d block=%d\n", mt_stat.mt_fileno, mt_stat.mt_blkno);
505 stat |= MT_ONLINE | MT_BOT;
513 * Load medium in device
514 * Returns: 1 on success
517 int load_dev(DEVICE *dev)
524 dev->dev_errno = EBADF;
525 Mmsg0(&dev->errmsg, _("Bad call to load_dev. Archive not open\n"));
526 Emsg0(M_FATAL, 0, dev->errmsg);
529 if (!(dev->state & ST_TAPE)) {
533 Dmsg0(200, "stored: MTLOAD command not available\n");
534 dev->dev_errno = ENOTTY; /* function not available */
535 Mmsg2(&dev->errmsg, _("ioctl MTLOAD error on %s. ERR=%s.\n"),
536 dev->dev_name, strerror(dev->dev_errno)); return 0;
540 dev->block_num = dev->file = 0;
542 mt_com.mt_op = MTLOAD;
544 if (ioctl(dev->fd, MTIOCTOP, (char *)&mt_com) < 0) {
545 dev->dev_errno = errno;
546 Mmsg2(&dev->errmsg, _("ioctl MTLOAD error on %s. ERR=%s.\n"),
547 dev->dev_name, strerror(dev->dev_errno)); return 0;
554 * Rewind device and put it offline
555 * Returns: 1 on success
558 int offline_dev(DEVICE *dev)
563 dev->dev_errno = EBADF;
564 Mmsg0(&dev->errmsg, _("Bad call to load_dev. Archive not open\n"));
565 Emsg0(M_FATAL, 0, dev->errmsg);
568 if (!(dev->state & ST_TAPE)) {
572 dev->block_num = dev->file = 0;
574 mt_com.mt_op = MTOFFL;
576 if (ioctl(dev->fd, MTIOCTOP, (char *)&mt_com) < 0) {
577 dev->dev_errno = errno;
578 Mmsg2(&dev->errmsg, _("ioctl MTOFFL error on %s. ERR=%s.\n"),
579 dev->dev_name, strerror(dev->dev_errno));
582 Dmsg1(000, "Offlined device %s\n", dev->dev_name);
588 * Foward space a file
591 fsf_dev(DEVICE *dev, int num)
598 dev->dev_errno = EBADF;
599 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
600 Emsg0(M_FATAL, 0, dev->errmsg);
604 if (!(dev->state & ST_TAPE)) {
607 if (dev->state & ST_EOT) {
609 Mmsg1(&dev->errmsg, _("Device %s at End of Tape.\n"), dev->dev_name);
612 if (dev->state & ST_EOF)
613 Dmsg0(200, "ST_EOF set on entry to FSF\n");
614 if (dev->state & ST_EOT)
615 Dmsg0(200, "ST_EOT set on entry to FSF\n");
617 Dmsg0(29, "fsf_dev\n");
619 if (dev->capabilities & CAP_FSF) {
620 Dmsg0(200, "FSF has cap_fsf\n");
621 mt_com.mt_op = MTFSF;
623 while (num-- && !(dev->state & ST_EOT)) {
624 Dmsg0(200, "Doing read for fsf\n");
625 if ((stat = read(dev->fd, rbuf, sizeof(rbuf))) < 0) {
626 if (errno == ENOMEM) { /* tape record exceeds buf len */
627 stat = sizeof(rbuf); /* This is OK */
629 dev->state |= ST_EOT;
630 clrerror_dev(dev, -1);
631 Dmsg1(200, "Set ST_EOT read error %d\n", dev->dev_errno);
632 Mmsg2(&dev->errmsg, _("read error on %s. ERR=%s.\n"),
633 dev->dev_name, strerror(dev->dev_errno));
634 Dmsg1(200, "%s", dev->errmsg);
638 if (stat == 0) { /* EOF */
640 Dmsg1(200, "End of File mark from read. File=%d\n", dev->file+1);
641 /* Two reads of zero means end of tape */
642 if (dev->state & ST_EOF) {
643 dev->state |= ST_EOT;
644 Dmsg0(200, "Set ST_EOT\n");
647 dev->state |= ST_EOF;
652 } else { /* Got data */
653 dev->state &= ~(ST_EOF|ST_EOT);
656 Dmsg0(200, "Doing MT_FSF\n");
657 stat = ioctl(dev->fd, MTIOCTOP, (char *)&mt_com);
658 if (stat < 0) { /* error => EOT */
659 dev->state |= ST_EOT;
660 Dmsg0(200, "Set ST_EOT\n");
661 clrerror_dev(dev, MTFSF);
662 Mmsg2(&dev->errmsg, _("ioctl MTFSF error on %s. ERR=%s.\n"),
663 dev->dev_name, strerror(dev->dev_errno));
664 Dmsg0(200, "Got < 0 for MT_FSF\n");
665 Dmsg1(200, "%s", dev->errmsg);
667 dev->state |= ST_EOF; /* just read EOF */
674 * No FSF, so use FSR to simulate it
677 Dmsg0(200, "Doing FSR for FSF\n");
678 while (num-- && !(dev->state & ST_EOT)) {
679 fsr_dev(dev, INT32_MAX); /* returns -1 on EOF or EOT */
681 if (dev->state & ST_EOT) {
683 Mmsg1(&dev->errmsg, _("Device %s at End of Tape.\n"), dev->dev_name);
690 Dmsg1(200, "Return %d from FSF\n", stat);
691 if (dev->state & ST_EOF)
692 Dmsg0(200, "ST_EOF set on exit FSF\n");
693 if (dev->state & ST_EOT)
694 Dmsg0(200, "ST_EOT set on exit FSF\n");
695 Dmsg1(200, "Return from FSF file=%d\n", dev->file);
700 * Backward space a file
703 bsf_dev(DEVICE *dev, int num)
709 dev->dev_errno = EBADF;
710 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
711 Emsg0(M_FATAL, 0, dev->errmsg);
715 if (!(dev->state & ST_TAPE)) {
718 Dmsg0(29, "bsf_dev\n");
719 dev->state &= ~(ST_EOT|ST_EOF);
722 mt_com.mt_op = MTBSF;
723 mt_com.mt_count = num;
724 stat = ioctl(dev->fd, MTIOCTOP, (char *)&mt_com);
726 clrerror_dev(dev, MTBSF);
727 Mmsg2(&dev->errmsg, _("ioctl MTBSF error on %s. ERR=%s.\n"),
728 dev->dev_name, strerror(dev->dev_errno));
736 * Foward space a record
739 fsr_dev(DEVICE *dev, int num)
745 dev->dev_errno = EBADF;
746 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
747 Emsg0(M_FATAL, 0, dev->errmsg);
751 if (!(dev->state & ST_TAPE)) {
754 Dmsg0(29, "fsr_dev\n");
755 dev->block_num += num;
756 mt_com.mt_op = MTFSR;
757 mt_com.mt_count = num;
758 stat = ioctl(dev->fd, MTIOCTOP, (char *)&mt_com);
760 dev->state &= ~ST_EOF;
762 if (dev->state & ST_EOF) {
763 dev->state |= ST_EOT;
765 dev->state |= ST_EOF; /* assume EOF */
769 clrerror_dev(dev, MTFSR);
770 Mmsg2(&dev->errmsg, _("ioctl MTFSR error on %s. ERR=%s.\n"),
771 dev->dev_name, strerror(dev->dev_errno));
778 * Backward space a record
781 bsr_dev(DEVICE *dev, int num)
787 dev->dev_errno = EBADF;
788 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
789 Emsg0(M_FATAL, 0, dev->errmsg);
793 if (!(dev->state & ST_TAPE)) {
796 Dmsg0(29, "bsr_dev\n");
797 dev->block_num -= num;
798 dev->state &= ~(ST_EOF|ST_EOT|ST_EOF);
799 mt_com.mt_op = MTBSR;
800 mt_com.mt_count = num;
801 stat = ioctl(dev->fd, MTIOCTOP, (char *)&mt_com);
803 clrerror_dev(dev, MTBSR);
804 Mmsg2(&dev->errmsg, _("ioctl MTBSR error on %s. ERR=%s.\n"),
805 dev->dev_name, strerror(dev->dev_errno));
814 * Write an end of file on the device
817 weof_dev(DEVICE *dev, int num)
823 dev->dev_errno = EBADF;
824 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
825 Emsg0(M_FATAL, 0, dev->errmsg);
829 if (!(dev->state & ST_TAPE)) {
832 dev->state &= ~(ST_EOT | ST_EOF); /* remove EOF/EOT flags */
834 Dmsg0(29, "weof_dev\n");
835 mt_com.mt_op = MTWEOF;
836 mt_com.mt_count = num;
837 stat = ioctl(dev->fd, MTIOCTOP, (char *)&mt_com);
842 clrerror_dev(dev, MTWEOF);
843 Mmsg2(&dev->errmsg, _("ioctl MTWEOF error on %s. ERR=%s.\n"),
844 dev->dev_name, strerror(dev->dev_errno));
850 * Return string message with last error in English
851 * Be careful not to call this routine from within dev.c
852 * while editing an Mmsg(&) or you will end up in a recursive
853 * loop creating a Segmentation Violation.
856 strerror_dev(DEVICE *dev)
863 * If implemented in system, clear the tape
867 clrerror_dev(DEVICE *dev, int func)
871 dev->dev_errno = errno; /* save errno */
873 dev->VolCatInfo.VolCatErrors++;
876 if (!(dev->state & ST_TAPE)) {
879 if (errno == ENOTTY || errno == ENOSYS) { /* Function not implemented */
882 Emsg0(M_ABORT, 0, "Got ENOTTY on read/write!\n");
886 dev->capabilities &= ~CAP_EOF; /* turn off feature */
890 dev->capabilities &= ~CAP_EOM; /* turn off feature */
894 dev->capabilities &= ~CAP_FSF; /* turn off feature */
898 dev->capabilities &= ~CAP_BSF; /* turn off feature */
902 dev->capabilities &= ~CAP_FSR; /* turn off feature */
906 dev->capabilities &= ~CAP_BSR; /* turn off feature */
913 dev->dev_errno = ENOSYS;
914 Mmsg1(&dev->errmsg, _("This device does not support %s.\n"), msg);
915 Emsg0(M_ERROR, 0, dev->errmsg);
922 mt_com.mt_op = MTIOCLRERR;
924 stat = ioctl(dev->fd, MTIOCTOP, (char *)&mt_com);
925 Dmsg0(200, "Did MTIOCLRERR\n");
931 * Flush buffer contents
934 int flush_dev(DEVICE *dev)
939 static void do_close(DEVICE *dev)
941 Dmsg0(29, "really close_dev\n");
943 /* Clean up device packet so it can be reused */
945 dev->state &= ~(ST_OPENED|ST_LABEL|ST_READ|ST_APPEND|ST_EOT|ST_WEOT|ST_EOF);
949 dev->LastBlockNumWritten = 0;
950 memset(&dev->VolCatInfo, 0, sizeof(dev->VolCatInfo));
951 memset(&dev->VolHdr, 0, sizeof(dev->VolHdr));
958 close_dev(DEVICE *dev)
961 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
962 Emsg0(M_FATAL, 0, dev->errmsg);
965 if (dev->fd >= 0 && dev->use_count == 1) {
968 Dmsg0(29, "close_dev but in use so leave open.\n");
974 * Used when unmounting the device
976 void force_close_dev(DEVICE *dev)
979 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
980 Emsg0(M_FATAL, 0, dev->errmsg);
983 Dmsg0(29, "really close_dev\n");
988 int truncate_dev(DEVICE *dev)
990 if (dev->state & ST_TAPE) {
993 if (ftruncate(dev->fd, 0) != 0) {
994 Mmsg1(&dev->errmsg, _("Unable to truncate device. ERR=%s\n"), strerror(errno));
1001 dev_is_tape(DEVICE *dev)
1003 return (dev->state & ST_TAPE) ? 1 : 0;
1007 dev_name(DEVICE *dev)
1009 return dev->dev_name;
1013 dev_vol_name(DEVICE *dev)
1015 return dev->VolCatInfo.VolCatName;
1018 uint32_t dev_block(DEVICE *dev)
1020 update_pos_dev(dev);
1021 return dev->block_num;
1024 uint32_t dev_file(DEVICE *dev)
1026 update_pos_dev(dev);
1031 * Free memory allocated for the device
1034 term_dev(DEVICE *dev)
1037 dev->dev_errno = EBADF;
1038 Mmsg0(&dev->errmsg, _("Bad call to fsf_dev. Archive not open\n"));
1039 Emsg0(M_FATAL, 0, dev->errmsg);
1043 Dmsg0(29, "term_dev\n");
1044 if (dev->dev_name) {
1045 free_memory(dev->dev_name);
1046 dev->dev_name = NULL;
1049 free_pool_memory(dev->errmsg);
1052 pthread_mutex_destroy(&dev->mutex);
1053 pthread_cond_destroy(&dev->wait);
1054 pthread_cond_destroy(&dev->wait_next_vol);
1055 if (dev->state & ST_MALLOC) {
1056 free_pool_memory((POOLMEM *)dev);