2 * This file handles accepting Director Commands
4 * Most Director commands are handled here, with the
5 * exception of the Job command command and subsequent
6 * subcommands that are handled
9 * N.B. in this file, in general we must use P(dev->mutex) rather
10 * than lock_device(dev) so that we can examine the blocked
11 * state rather than blocking ourselves because a Job
12 * thread has the device blocked. In some "safe" cases,
13 * we can do things to a blocked device. CAREFUL!!!!
15 * File daemon commands are handled in fdcmd.c
17 * Kern Sibbald, May MMI
23 Copyright (C) 2001-2005 Kern Sibbald
25 This program is free software; you can redistribute it and/or
26 modify it under the terms of the GNU General Public License
27 version 2 as amended with additional clauses defined in the
28 file LICENSE in the main source directory.
30 This program is distributed in the hope that it will be useful,
31 but WITHOUT ANY WARRANTY; without even the implied warranty of
32 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33 the file LICENSE for additional details.
40 /* Exported variables */
42 /* Imported variables */
43 extern BSOCK *filed_chan;
44 extern int r_first, r_last;
45 extern struct s_res resources[];
46 extern char my_name[];
47 extern time_t daemon_start_time;
48 extern struct s_last_job last_job;
49 extern bool init_done;
51 /* Static variables */
52 static char derrmsg[] = "3900 Invalid command\n";
53 static char OKsetdebug[] = "3000 OK setdebug=%d\n";
54 static char illegal_cmd[] = "3997 Illegal command for a Director with Monitor directive enabled\n";
56 /* Imported functions */
57 extern void terminate_child();
58 extern bool job_cmd(JCR *jcr);
59 extern bool use_cmd(JCR *jcr);
60 extern bool run_cmd(JCR *jcr);
61 extern bool status_cmd(JCR *sjcr);
62 extern bool qstatus_cmd(JCR *jcr);
63 //extern bool query_cmd(JCR *jcr);
65 /* Forward referenced functions */
66 static bool label_cmd(JCR *jcr);
67 static bool relabel_cmd(JCR *jcr);
68 static bool readlabel_cmd(JCR *jcr);
69 static bool release_cmd(JCR *jcr);
70 static bool setdebug_cmd(JCR *jcr);
71 static bool cancel_cmd(JCR *cjcr);
72 static bool mount_cmd(JCR *jcr);
73 static bool unmount_cmd(JCR *jcr);
74 static bool changer_cmd(JCR *sjcr);
75 static bool do_label(JCR *jcr, int relabel);
76 static DCR *find_device(JCR *jcr, POOL_MEM &dev_name, int drive);
77 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
78 static void label_volume_if_ok(DCR *dcr, char *oldname,
79 char *newname, char *poolname,
80 int Slot, int relabel);
81 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName);
82 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev);
86 bool (*func)(JCR *jcr);
87 int monitoraccess; /* specify if monitors have access to this function */
91 * The following are the recognized commands from the Director.
93 static struct s_cmds cmds[] = {
94 {"JobId=", job_cmd, 0}, /* start Job */
95 {"autochanger", changer_cmd, 0},
96 {"bootstrap", bootstrap_cmd, 0},
97 {"cancel", cancel_cmd, 0},
98 {"label", label_cmd, 0}, /* label a tape */
99 {"mount", mount_cmd, 0},
100 {"readlabel", readlabel_cmd, 0},
101 {"release", release_cmd, 0},
102 {"relabel", relabel_cmd, 0}, /* relabel a tape */
103 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
104 {"status", status_cmd, 1},
105 {".status", qstatus_cmd, 1},
106 {"unmount", unmount_cmd, 0},
107 {"use storage=", use_cmd, 0},
109 // {"query", query_cmd, 0},
110 {NULL, NULL} /* list terminator */
115 * Connection request. We accept connections either from the
116 * Director or a Client (File daemon).
118 * Note, we are running as a seperate thread of the Storage daemon.
119 * and it is because a Director has made a connection with
120 * us on the "Message" channel.
122 * Basic tasks done here:
123 * - Create a JCR record
124 * - If it was from the FD, call handle_filed_connection()
125 * - Authenticate the Director
126 * - We wait for a command
127 * - We execute the command
128 * - We continue or exit depending on the return status
130 void *handle_connection_request(void *arg)
132 BSOCK *bs = (BSOCK *)arg;
137 char name[MAX_NAME_LENGTH];
139 if (bnet_recv(bs) <= 0) {
140 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
146 * Do a sanity check on the message received
148 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
149 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
154 * See if this is a File daemon connection. If so
157 Dmsg1(110, "Conn: %s", bs->msg);
158 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
159 handle_filed_connection(bs, name);
164 * This is a connection from the Director, so setup a JCR
166 Dmsg0(110, "Start Dir Job\n");
167 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
168 jcr->dir_bsock = bs; /* save Director bsock */
169 jcr->dir_bsock->jcr = jcr;
170 jcr->dcrs = New(alist(10, not_owned_by_alist));
171 /* Initialize FD start condition variable */
172 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
174 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
178 Dmsg0(1000, "stored in start_job\n");
181 * Authenticate the Director
183 if (!authenticate_director(jcr)) {
184 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
187 Dmsg0(90, "Message channel init completed.\n");
189 for (quit=false; !quit;) {
191 if ((bnet_stat = bnet_recv(bs)) <= 0) {
192 break; /* connection terminated */
194 Dmsg1(199, "<dird: %s", bs->msg);
195 /* Ensure that device initialization is complete */
200 for (i=0; cmds[i].cmd; i++) {
201 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
202 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
203 Dmsg1(100, "Command %s illegal.\n", cmds[i].cmd);
204 bnet_fsend(bs, illegal_cmd);
205 bnet_sig(bs, BNET_EOD);
208 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
209 if (!cmds[i].func(jcr)) { /* do command */
210 quit = true; /* error, get out */
211 Dmsg1(190, "Command %s requsts quit\n", cmds[i].cmd);
213 found = true; /* indicate command found */
217 if (!found) { /* command not found */
218 bnet_fsend(bs, derrmsg);
223 generate_daemon_event(jcr, "JobEnd");
224 dequeue_messages(jcr); /* send any queued messages */
225 bnet_sig(bs, BNET_TERMINATE);
231 * Set debug level as requested by the Director
234 static bool setdebug_cmd(JCR *jcr)
236 BSOCK *dir = jcr->dir_bsock;
237 int level, trace_flag;
239 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
240 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
241 bnet_fsend(dir, _("3991 Bad setdebug command: %s\n"), dir->msg);
245 set_trace(trace_flag);
246 return bnet_fsend(dir, OKsetdebug, level);
253 static bool cancel_cmd(JCR *cjcr)
255 BSOCK *dir = cjcr->dir_bsock;
257 char Job[MAX_NAME_LENGTH];
260 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
261 if (!(jcr=get_jcr_by_full_name(Job))) {
262 bnet_fsend(dir, _("3904 Job %s not found.\n"), Job);
265 oldStatus = jcr->JobStatus;
266 set_jcr_job_status(jcr, JS_Canceled);
267 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
268 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
271 if (jcr->file_bsock) {
272 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
274 /* If thread waiting on mount, wake him */
275 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
276 pthread_cond_broadcast(&jcr->dcr->dev->wait_next_vol);
277 pthread_cond_broadcast(&wait_device_release);
279 if (jcr->read_dcr && jcr->read_dcr->dev && jcr->read_dcr->dev->waiting_for_mount()) {
280 pthread_cond_broadcast(&jcr->read_dcr->dev->wait_next_vol);
281 pthread_cond_broadcast(&wait_device_release);
283 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
287 bnet_fsend(dir, _("3903 Error scanning cancel command.\n"));
289 bnet_sig(dir, BNET_EOD);
297 static bool label_cmd(JCR *jcr)
299 return do_label(jcr, 0);
302 static bool relabel_cmd(JCR *jcr)
304 return do_label(jcr, 1);
307 static bool do_label(JCR *jcr, int relabel)
309 POOLMEM *newname, *oldname, *poolname, *mtype;
311 BSOCK *dir = jcr->dir_bsock;
318 newname = get_memory(dir->msglen+1);
319 oldname = get_memory(dir->msglen+1);
320 poolname = get_memory(dir->msglen+1);
321 mtype = get_memory(dir->msglen+1);
323 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s "
324 "MediaType=%127s Slot=%d drive=%d",
325 dev_name.c_str(), oldname, newname, poolname, mtype,
326 &slot, &drive) == 7) {
331 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s "
332 "MediaType=%127s Slot=%d drive=%d",
333 dev_name.c_str(), newname, poolname, mtype, &slot, &drive) == 6) {
338 unbash_spaces(newname);
339 unbash_spaces(oldname);
340 unbash_spaces(poolname);
341 unbash_spaces(mtype);
342 dcr = find_device(jcr, dev_name, drive);
345 P(dev->mutex); /* Use P to avoid indefinite block */
346 if (!dev->is_open()) {
347 Dmsg0(400, "Can relabel. Device is not open\n");
348 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
349 force_close_device(dev);
350 /* Under certain "safe" conditions, we can steal the lock */
351 } else if (dev->can_steal_lock()) {
352 Dmsg0(400, "Can relabel. can_steal_lock\n");
353 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
354 } else if (dev->is_busy() || dev->is_blocked()) {
355 send_dir_busy_message(dir, dev);
356 } else { /* device not being used */
357 Dmsg0(400, "Can relabel. device not used\n");
358 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
364 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), dev_name.c_str());
367 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
368 pm_strcpy(jcr->errmsg, dir->msg);
369 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
371 free_memory(oldname);
372 free_memory(newname);
373 free_memory(poolname);
375 bnet_sig(dir, BNET_EOD);
380 * Read the tape label and determine if we can safely
381 * label the tape (not a Bacula volume), then label it.
383 * Enter with the mutex set
385 static void label_volume_if_ok(DCR *dcr, char *oldname,
386 char *newname, char *poolname,
387 int slot, int relabel)
389 BSOCK *dir = dcr->jcr->dir_bsock;
391 DEVICE *dev = dcr->dev;
394 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
395 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
397 /* Note, try_autoload_device() opens the device */
398 if (!try_autoload_device(dcr->jcr, slot, newname)) {
399 goto bail_out; /* error */
402 /* See what we have for a Volume */
403 label_status = read_dev_volume_label(dcr);
405 switch(label_status) {
407 case VOL_VERSION_ERROR:
408 case VOL_LABEL_ERROR:
412 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
413 dev->VolHdr.VolumeName);
417 /* Relabel request. If oldname matches, continue */
418 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
419 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
422 if (dev->label_type != B_BACULA_LABEL) {
423 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
426 free_volume(dev); /* release old volume name */
427 /* Fall through wanted! */
430 if (!write_new_volume_label_to_dev(dcr, newname, poolname)) {
431 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
434 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
435 /* The following 3000 OK label. string is scanned in ua_label.c */
436 bnet_fsend(dir, "3000 OK label. Volume=%s Device=%s\n",
437 newname, dev->print_name());
440 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), strerror_dev(dev));
443 bnet_fsend(dir, _("3913 Cannot label Volume. "
444 "Unknown status %d from read_volume_label()\n"), label_status);
449 if (!dev->is_open()) {
452 give_back_device_lock(dev, &hold);
458 * Read the tape label
460 * Enter with the mutex set
462 static bool read_label(DCR *dcr)
466 BSOCK *dir = jcr->dir_bsock;
468 DEVICE *dev = dcr->dev;
470 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
472 dcr->VolumeName[0] = 0;
473 dev->clear_labeled(); /* force read of label */
474 switch (read_dev_volume_label(dcr)) {
476 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
480 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
481 dev->print_name(), jcr->errmsg);
485 give_back_device_lock(dev, &hold);
490 * Searches for device by name, and if found, creates a dcr and
493 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
496 AUTOCHANGER *changer;
500 unbash_spaces(devname);
501 foreach_res(device, R_DEVICE) {
502 /* Find resource, and make sure we were able to open it */
503 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
505 device->dev = init_dev(jcr, device);
508 Jmsg(jcr, M_WARNING, 0, _("\n"
509 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
513 Dmsg1(20, "Found device %s\n", device->hdr.name);
518 foreach_res(changer, R_AUTOCHANGER) {
519 /* Find resource, and make sure we were able to open it */
520 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
521 /* Try each device in this AutoChanger */
522 foreach_alist(device, changer->device) {
523 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
525 device->dev = init_dev(jcr, device);
528 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
529 Jmsg(jcr, M_WARNING, 0, _("\n"
530 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
531 device->hdr.name, devname.c_str());
534 if (!device->dev->autoselect) {
535 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
536 continue; /* device is not available */
538 if (drive < 0 || drive == (int)device->dev->drive_index) {
539 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
543 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
544 devname.c_str(), drive, (int)device->dev->drive_index);
546 break; /* we found it but could not open a device */
551 Dmsg1(100, "Found changer device %s\n", device->hdr.name);
552 dcr = new_dcr(jcr, device->dev);
553 dcr->device = device;
561 * Mount command from Director
563 static bool mount_cmd(JCR *jcr)
566 BSOCK *dir = jcr->dir_bsock;
571 if (sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2) {
572 dcr = find_device(jcr, devname, drive);
575 P(dev->mutex); /* Use P to avoid indefinite block */
576 Dmsg1(100, "mount cmd blocked=%d\n", dev->dev_blocked);
577 switch (dev->dev_blocked) { /* device blocked? */
578 case BST_WAITING_FOR_SYSOP:
579 /* Someone is waiting, wake him */
580 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
581 dev->dev_blocked = BST_MOUNT;
582 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
584 pthread_cond_broadcast(&dev->wait_next_vol);
585 pthread_cond_broadcast(&wait_device_release);
588 /* In both of these two cases, we (the user) unmounted the Volume */
589 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
591 /* We freed the device, so reopen it and wake any waiting threads */
592 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
593 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
595 if (dev->dev_blocked == BST_UNMOUNTED) {
596 /* We blocked the device, so unblock it */
597 Dmsg0(100, "Unmounted. Unblocking device\n");
602 read_dev_volume_label(dcr);
603 if (dev->dev_blocked == BST_UNMOUNTED) {
604 /* We blocked the device, so unblock it */
605 Dmsg0(100, "Unmounted. Unblocking device\n");
606 read_label(dcr); /* this should not be necessary */
609 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
610 dev->dev_blocked = BST_MOUNT;
612 if (dev->is_labeled()) {
613 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
614 dev->print_name(), dev->VolHdr.VolumeName);
616 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
617 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
620 pthread_cond_broadcast(&dev->wait_next_vol);
621 pthread_cond_broadcast(&wait_device_release);
624 case BST_DOING_ACQUIRE:
625 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
629 case BST_WRITING_LABEL:
630 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
634 case BST_NOT_BLOCKED:
635 if (dev->is_open()) {
636 if (dev->is_labeled()) {
637 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
638 dev->print_name(), dev->VolHdr.VolumeName);
640 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
641 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
644 } else if (dev->is_tape()) {
645 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
646 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
651 if (dev->is_labeled()) {
652 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
653 dev->print_name(), dev->VolHdr.VolumeName);
655 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
656 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
659 } else if (dev->is_dvd()) {
660 if (mount_dev(dev, 1)) {
661 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
664 bnet_fsend(dir, _("3907 %s"), strerror_dev(dev));
666 } else { /* must be file */
667 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
673 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
680 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
683 pm_strcpy(jcr->errmsg, dir->msg);
684 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
686 bnet_sig(dir, BNET_EOD);
691 * unmount command from Director
693 static bool unmount_cmd(JCR *jcr)
696 BSOCK *dir = jcr->dir_bsock;
701 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
702 dcr = find_device(jcr, devname, drive);
705 P(dev->mutex); /* Use P to avoid indefinite block */
706 if (!dev->is_open()) {
707 if (!dev->is_busy()) {
708 unload_autochanger(jcr->dcr, -1);
710 Dmsg0(90, "Device already unmounted\n");
711 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
714 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
715 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
717 if (!unload_autochanger(jcr->dcr, -1)) {
718 offline_or_rewind_dev(dev);
719 force_close_device(dev);
721 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
722 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
725 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
726 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
729 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
730 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
733 } else if (dev->is_busy()) {
734 send_dir_busy_message(dir, dev);
735 } else { /* device not being used */
736 Dmsg0(90, "Device not in use, unmounting\n");
737 /* On FreeBSD, I am having ASSERT() failures in block_device()
738 * and I can only imagine that the thread id that we are
739 * leaving in no_wait_id is being re-used. So here,
740 * we simply do it by hand. Gross, but a solution.
742 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
743 dev->dev_blocked = BST_UNMOUNTED;
745 if (!unload_autochanger(jcr->dcr, -1)) {
746 offline_or_rewind_dev(dev);
747 force_close_device(dev);
749 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
756 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
759 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
760 pm_strcpy(jcr->errmsg, dir->msg);
761 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
763 bnet_sig(dir, BNET_EOD);
768 * Release command from Director. This rewinds the device and if
769 * configured does a offline and ensures that Bacula will
770 * re-read the label of the tape before continuing. This gives
771 * the operator the chance to change the tape anytime before the
774 static bool release_cmd(JCR *jcr)
777 BSOCK *dir = jcr->dir_bsock;
782 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
783 dcr = find_device(jcr, devname, drive);
786 P(dev->mutex); /* Use P to avoid indefinite block */
787 if (!dev->is_open()) {
788 Dmsg0(90, "Device already released\n");
789 bnet_fsend(dir, _("3921 Device %s already released.\n"),
792 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
793 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
794 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
796 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
799 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
800 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
803 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
804 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
807 } else if (dev->is_busy()) {
808 send_dir_busy_message(dir, dev);
809 } else { /* device not being used */
810 Dmsg0(90, "Device not in use, unmounting\n");
811 release_volume(jcr->dcr);
812 bnet_fsend(dir, _("3022 Device %s released.\n"),
819 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
822 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
823 pm_strcpy(jcr->errmsg, dir->msg);
824 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
826 bnet_sig(dir, BNET_EOD);
833 * Autochanger command from Director
835 static bool changer_cmd(JCR *jcr)
838 BSOCK *dir = jcr->dir_bsock;
841 const char *cmd = NULL;
844 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
847 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
850 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
855 dcr = find_device(jcr, devname, -1);
858 P(dev->mutex); /* Use P to avoid indefinite block */
859 if (!dev->is_tape()) {
860 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
862 /* Under certain "safe" conditions, we can steal the lock */
863 } else if (!dev->is_open() || dev->can_steal_lock()) {
864 autochanger_cmd(dcr, dir, cmd);
865 } else if (dev->is_busy() || dev->is_blocked()) {
866 send_dir_busy_message(dir, dev);
867 } else { /* device not being used */
868 autochanger_cmd(dcr, dir, cmd);
874 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
876 } else { /* error on scanf */
877 pm_strcpy(jcr->errmsg, dir->msg);
878 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
881 bnet_sig(dir, BNET_EOD);
886 * Read and return the Volume label
888 static bool readlabel_cmd(JCR *jcr)
891 BSOCK *dir = jcr->dir_bsock;
897 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
898 &Slot, &drive) == 3) {
899 dcr = find_device(jcr, devname, drive);
902 P(dev->mutex); /* Use P to avoid indefinite block */
903 if (!dev->is_open()) {
904 read_volume_label(jcr, dev, Slot);
905 force_close_device(dev);
906 /* Under certain "safe" conditions, we can steal the lock */
907 } else if (dev->can_steal_lock()) {
908 read_volume_label(jcr, dev, Slot);
909 } else if (dev->is_busy() || dev->is_blocked()) {
910 send_dir_busy_message(dir, dev);
911 } else { /* device not being used */
912 read_volume_label(jcr, dev, Slot);
918 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
921 pm_strcpy(jcr->errmsg, dir->msg);
922 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
924 bnet_sig(dir, BNET_EOD);
929 * Read the tape label
931 * Enter with the mutex set
933 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
935 BSOCK *dir = jcr->dir_bsock;
940 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
942 if (!try_autoload_device(jcr, Slot, "")) {
943 goto bail_out; /* error */
946 dev->clear_labeled(); /* force read of label */
947 switch (read_dev_volume_label(dcr)) {
949 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
950 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
951 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
954 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
955 dev->print_name(), jcr->errmsg);
960 give_back_device_lock(dev, &hold);
964 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
967 BSOCK *dir = jcr->dir_bsock;
968 DEVICE *dev = dcr->dev;
970 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
971 dcr->VolCatInfo.Slot = slot;
972 dcr->VolCatInfo.InChanger = slot > 0;
973 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
977 /* Ensure that the device is open -- autoload_device() closes it */
978 if (dev->open(dcr, OPEN_READ_WRITE) < 0) {
979 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
980 dev->print_name(), dev->strerror());
986 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
988 if (dev->is_blocked()) {
989 switch (dev->dev_blocked) {
991 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
994 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
995 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
998 case BST_WAITING_FOR_SYSOP:
999 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1002 case BST_DOING_ACQUIRE:
1003 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1006 case BST_WRITING_LABEL:
1007 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1011 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1015 } else if (dev->can_read()) {
1016 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1017 dev->print_name());;
1019 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1020 dev->print_name(), dev->num_writers);