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) 2001-2006 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 struct s_last_job last_job;
47 extern bool init_done;
49 /* Static variables */
50 static char derrmsg[] = "3900 Invalid command\n";
51 static char OKsetdebug[] = "3000 OK setdebug=%d\n";
52 static char illegal_cmd[] = "3997 Illegal command for a Director with Monitor directive enabled\n";
54 /* Imported functions */
55 extern void terminate_child();
56 extern bool job_cmd(JCR *jcr);
57 extern bool use_cmd(JCR *jcr);
58 extern bool run_cmd(JCR *jcr);
59 extern bool status_cmd(JCR *sjcr);
60 extern bool qstatus_cmd(JCR *jcr);
61 //extern bool query_cmd(JCR *jcr);
63 /* Forward referenced functions */
64 static bool label_cmd(JCR *jcr);
65 static bool relabel_cmd(JCR *jcr);
66 static bool readlabel_cmd(JCR *jcr);
67 static bool release_cmd(JCR *jcr);
68 static bool setdebug_cmd(JCR *jcr);
69 static bool cancel_cmd(JCR *cjcr);
70 static bool mount_cmd(JCR *jcr);
71 static bool unmount_cmd(JCR *jcr);
72 static bool bootstrap_cmd(JCR *jcr);
73 static bool changer_cmd(JCR *sjcr);
74 static bool do_label(JCR *jcr, int relabel);
75 static DCR *find_device(JCR *jcr, POOL_MEM &dev_name, int drive);
76 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot);
77 static void label_volume_if_ok(DCR *dcr, char *oldname,
78 char *newname, char *poolname,
79 int Slot, int relabel);
80 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName);
81 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev);
85 bool (*func)(JCR *jcr);
86 int monitoraccess; /* specify if monitors have access to this function */
90 * The following are the recognized commands from the Director.
92 static struct s_cmds cmds[] = {
93 {"JobId=", job_cmd, 0}, /* start Job */
94 {"autochanger", changer_cmd, 0},
95 {"bootstrap", bootstrap_cmd, 0},
96 {"cancel", cancel_cmd, 0},
97 {"label", label_cmd, 0}, /* label a tape */
98 {"mount", mount_cmd, 0},
99 {"readlabel", readlabel_cmd, 0},
100 {"release", release_cmd, 0},
101 {"relabel", relabel_cmd, 0}, /* relabel a tape */
102 {"setdebug=", setdebug_cmd, 0}, /* set debug level */
103 {"status", status_cmd, 1},
104 {".status", qstatus_cmd, 1},
105 {"unmount", unmount_cmd, 0},
106 {"use storage=", use_cmd, 0},
108 // {"query", query_cmd, 0},
109 {NULL, NULL} /* list terminator */
114 * Connection request. We accept connections either from the
115 * Director or a Client (File daemon).
117 * Note, we are running as a seperate thread of the Storage daemon.
118 * and it is because a Director has made a connection with
119 * us on the "Message" channel.
121 * Basic tasks done here:
122 * - Create a JCR record
123 * - If it was from the FD, call handle_filed_connection()
124 * - Authenticate the Director
125 * - We wait for a command
126 * - We execute the command
127 * - We continue or exit depending on the return status
129 void *handle_connection_request(void *arg)
131 BSOCK *bs = (BSOCK *)arg;
136 char name[MAX_NAME_LENGTH];
138 if (bnet_recv(bs) <= 0) {
139 Emsg0(M_ERROR, 0, _("Connection request failed.\n"));
145 * Do a sanity check on the message received
147 if (bs->msglen < 25 || bs->msglen > (int)sizeof(name)-25) {
148 Emsg1(M_ERROR, 0, _("Invalid connection. Len=%d\n"), bs->msglen);
153 * See if this is a File daemon connection. If so
156 Dmsg1(110, "Conn: %s", bs->msg);
157 if (sscanf(bs->msg, "Hello Start Job %127s", name) == 1) {
158 handle_filed_connection(bs, name);
163 * This is a connection from the Director, so setup a JCR
165 Dmsg0(110, "Start Dir Job\n");
166 jcr = new_jcr(sizeof(JCR), stored_free_jcr); /* create Job Control Record */
167 jcr->dir_bsock = bs; /* save Director bsock */
168 jcr->dir_bsock->jcr = jcr;
169 jcr->dcrs = New(alist(10, not_owned_by_alist));
170 /* Initialize FD start condition variable */
171 int errstat = pthread_cond_init(&jcr->job_start_wait, NULL);
173 Jmsg1(jcr, M_FATAL, 0, _("Unable to init job cond variable: ERR=%s\n"), strerror(errstat));
177 Dmsg0(1000, "stored in start_job\n");
180 * Authenticate the Director
182 if (!authenticate_director(jcr)) {
183 Jmsg(jcr, M_FATAL, 0, _("Unable to authenticate Director\n"));
186 Dmsg0(90, "Message channel init completed.\n");
188 for (quit=false; !quit;) {
190 if ((bnet_stat = bnet_recv(bs)) <= 0) {
191 break; /* connection terminated */
193 Dmsg1(199, "<dird: %s\n", bs->msg);
194 /* Ensure that device initialization is complete */
199 for (i=0; cmds[i].cmd; i++) {
200 if (strncmp(cmds[i].cmd, bs->msg, strlen(cmds[i].cmd)) == 0) {
201 if ((!cmds[i].monitoraccess) && (jcr->director->monitor)) {
202 Dmsg1(100, "Command %s illegal.\n", cmds[i].cmd);
203 bnet_fsend(bs, illegal_cmd);
204 bnet_sig(bs, BNET_EOD);
207 Dmsg1(200, "Do command: %s\n", cmds[i].cmd);
208 if (!cmds[i].func(jcr)) { /* do command */
209 quit = true; /* error, get out */
210 Dmsg1(190, "Command %s reqeusts quit\n", cmds[i].cmd);
212 found = true; /* indicate command found */
216 if (!found) { /* command not found */
217 bnet_fsend(bs, derrmsg);
222 generate_daemon_event(jcr, "JobEnd");
223 dequeue_messages(jcr); /* send any queued messages */
224 bnet_sig(bs, BNET_TERMINATE);
230 * Set debug level as requested by the Director
233 static bool setdebug_cmd(JCR *jcr)
235 BSOCK *dir = jcr->dir_bsock;
236 int level, trace_flag;
238 Dmsg1(10, "setdebug_cmd: %s", dir->msg);
239 if (sscanf(dir->msg, "setdebug=%d trace=%d", &level, &trace_flag) != 2 || level < 0) {
240 bnet_fsend(dir, _("3991 Bad setdebug command: %s\n"), dir->msg);
244 set_trace(trace_flag);
245 return bnet_fsend(dir, OKsetdebug, level);
252 static bool cancel_cmd(JCR *cjcr)
254 BSOCK *dir = cjcr->dir_bsock;
256 char Job[MAX_NAME_LENGTH];
259 if (sscanf(dir->msg, "cancel Job=%127s", Job) == 1) {
260 if (!(jcr=get_jcr_by_full_name(Job))) {
261 bnet_fsend(dir, _("3904 Job %s not found.\n"), Job);
264 oldStatus = jcr->JobStatus;
265 set_jcr_job_status(jcr, JS_Canceled);
266 if (!jcr->authenticated && oldStatus == JS_WaitFD) {
267 pthread_cond_signal(&jcr->job_start_wait); /* wake waiting thread */
270 if (jcr->file_bsock) {
271 bnet_sig(jcr->file_bsock, BNET_TERMINATE);
273 /* If thread waiting on mount, wake him */
274 if (jcr->dcr && jcr->dcr->dev && jcr->dcr->dev->waiting_for_mount()) {
275 pthread_cond_broadcast(&jcr->dcr->dev->wait_next_vol);
276 pthread_cond_broadcast(&wait_device_release);
278 if (jcr->read_dcr && jcr->read_dcr->dev && jcr->read_dcr->dev->waiting_for_mount()) {
279 pthread_cond_broadcast(&jcr->read_dcr->dev->wait_next_vol);
280 pthread_cond_broadcast(&wait_device_release);
282 bnet_fsend(dir, _("3000 Job %s marked to be canceled.\n"), jcr->Job);
286 bnet_fsend(dir, _("3903 Error scanning cancel command.\n"));
288 bnet_sig(dir, BNET_EOD);
296 static bool label_cmd(JCR *jcr)
298 return do_label(jcr, 0);
301 static bool relabel_cmd(JCR *jcr)
303 return do_label(jcr, 1);
306 static bool do_label(JCR *jcr, int relabel)
308 POOLMEM *newname, *oldname, *poolname, *mtype;
310 BSOCK *dir = jcr->dir_bsock;
317 newname = get_memory(dir->msglen+1);
318 oldname = get_memory(dir->msglen+1);
319 poolname = get_memory(dir->msglen+1);
320 mtype = get_memory(dir->msglen+1);
322 if (sscanf(dir->msg, "relabel %127s OldName=%127s NewName=%127s PoolName=%127s "
323 "MediaType=%127s Slot=%d drive=%d",
324 dev_name.c_str(), oldname, newname, poolname, mtype,
325 &slot, &drive) == 7) {
330 if (sscanf(dir->msg, "label %127s VolumeName=%127s PoolName=%127s "
331 "MediaType=%127s Slot=%d drive=%d",
332 dev_name.c_str(), newname, poolname, mtype, &slot, &drive) == 6) {
337 unbash_spaces(newname);
338 unbash_spaces(oldname);
339 unbash_spaces(poolname);
340 unbash_spaces(mtype);
341 dcr = find_device(jcr, dev_name, drive);
344 P(dev->mutex); /* Use P to avoid indefinite block */
345 if (!dev->is_open()) {
346 Dmsg1(400, "Can %slabel. Device is not open\n", relabel?"re":"");
347 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
349 /* Under certain "safe" conditions, we can steal the lock */
350 } else if (dev->can_steal_lock()) {
351 Dmsg0(400, "Can relabel. can_steal_lock\n");
352 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
353 } else if (dev->is_busy() || dev->is_blocked()) {
354 send_dir_busy_message(dir, dev);
355 } else { /* device not being used */
356 Dmsg0(400, "Can relabel. device not used\n");
357 label_volume_if_ok(dcr, oldname, newname, poolname, slot, relabel);
363 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), dev_name.c_str());
366 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
367 pm_strcpy(jcr->errmsg, dir->msg);
368 bnet_fsend(dir, _("3903 Error scanning label command: %s\n"), jcr->errmsg);
370 free_memory(oldname);
371 free_memory(newname);
372 free_memory(poolname);
374 bnet_sig(dir, BNET_EOD);
379 * Read the tape label and determine if we can safely
380 * label the tape (not a Bacula volume), then label it.
382 * Enter with the mutex set
384 static void label_volume_if_ok(DCR *dcr, char *oldname,
385 char *newname, char *poolname,
386 int slot, int relabel)
388 BSOCK *dir = dcr->jcr->dir_bsock;
390 DEVICE *dev = dcr->dev;
393 const char *volname = (relabel == 0) ? newname : oldname;
396 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
397 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
399 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
400 if (relabel && dev->is_dvd()) {
401 /* Fake at least one partition to ensure that we look for the old volume */
402 dcr->VolCatInfo.VolCatParts = 1;
405 if (!try_autoload_device(dcr->jcr, slot, volname)) {
406 goto bail_out; /* error */
409 /* Ensure that the device is open -- autoload_device() closes it */
410 if (dev->is_tape()) {
411 mode = OPEN_READ_WRITE;
413 mode = CREATE_READ_WRITE;
416 bstrncpy(dcr->VolCatInfo.VolCatName, volname, sizeof(dcr->VolCatInfo.VolCatName));
419 if (dev->open(dcr, mode) < 0) {
420 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
421 dev->print_name(), dev->strerror());
425 /* See what we have for a Volume */
426 label_status = read_dev_volume_label(dcr);
428 switch(label_status) {
430 case VOL_VERSION_ERROR:
431 case VOL_LABEL_ERROR:
435 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
436 dev->VolHdr.VolumeName);
440 /* Relabel request. If oldname matches, continue */
441 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
442 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
445 if (dev->label_type != B_BACULA_LABEL) {
446 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
449 if (relabel && dev->is_dvd()) {
450 /* Save dev VolumeName */
451 bstrncpy(dcr->VolumeName, dev->VolCatInfo.VolCatName, sizeof(dcr->VolumeName));
452 /* Use new name for DVD truncation */
453 bstrncpy(dev->VolCatInfo.VolCatName, newname, sizeof(dev->VolCatInfo.VolCatName));
454 if (!dev->truncate(dcr)) {
455 bnet_fsend(dir, _("3912 Failed to truncate previous DVD volume.\n"));
456 /* Restore device VolName */
457 bstrncpy(dev->VolCatInfo.VolCatName, dcr->VolumeName, sizeof(dev->VolCatInfo.VolCatName));
460 /* Restore device VolName */
461 bstrncpy(dev->VolCatInfo.VolCatName, dcr->VolumeName, sizeof(dev->VolCatInfo.VolCatName));
463 free_volume(dev); /* release old volume name */
464 /* Fall through wanted! */
467 if (!write_new_volume_label_to_dev(dcr, newname, poolname, true /* write dvd now */)) {
468 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
471 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
472 /* The following 3000 OK label. string is scanned in ua_label.c */
473 bnet_fsend(dir, "3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
474 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
475 dev->is_dvd()?1:0, newname, dev->print_name());
478 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
481 bnet_fsend(dir, _("3913 Cannot label Volume. "
482 "Unknown status %d from read_volume_label()\n"), label_status);
487 if (!dev->is_open()) {
490 give_back_device_lock(dev, &hold);
496 * Read the tape label
498 * Enter with the mutex set
500 static bool read_label(DCR *dcr)
504 BSOCK *dir = jcr->dir_bsock;
506 DEVICE *dev = dcr->dev;
508 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
510 dcr->VolumeName[0] = 0;
511 dev->clear_labeled(); /* force read of label */
512 switch (read_dev_volume_label(dcr)) {
514 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
518 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
519 dev->print_name(), jcr->errmsg);
523 give_back_device_lock(dev, &hold);
528 * Searches for device by name, and if found, creates a dcr and
531 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
534 AUTOCHANGER *changer;
538 unbash_spaces(devname);
539 foreach_res(device, R_DEVICE) {
540 /* Find resource, and make sure we were able to open it */
541 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
543 device->dev = init_dev(jcr, device);
546 Jmsg(jcr, M_WARNING, 0, _("\n"
547 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
551 Dmsg1(20, "Found device %s\n", device->hdr.name);
557 foreach_res(changer, R_AUTOCHANGER) {
558 /* Find resource, and make sure we were able to open it */
559 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
560 /* Try each device in this AutoChanger */
561 foreach_alist(device, changer->device) {
562 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
564 device->dev = init_dev(jcr, device);
567 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
568 Jmsg(jcr, M_WARNING, 0, _("\n"
569 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
570 device->hdr.name, devname.c_str());
573 if (!device->dev->autoselect) {
574 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
575 continue; /* device is not available */
577 if (drive < 0 || drive == (int)device->dev->drive_index) {
578 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
582 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
583 devname.c_str(), drive, (int)device->dev->drive_index);
585 break; /* we found it but could not open a device */
591 Dmsg1(100, "Found device %s\n", device->hdr.name);
592 dcr = new_dcr(jcr, device->dev);
593 dcr->device = device;
601 * Mount command from Director
603 static bool mount_cmd(JCR *jcr)
606 BSOCK *dir = jcr->dir_bsock;
613 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
616 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
619 dcr = find_device(jcr, devname, drive);
622 P(dev->mutex); /* Use P to avoid indefinite block */
623 Dmsg1(100, "mount cmd blocked=%d\n", dev->dev_blocked);
624 switch (dev->dev_blocked) { /* device blocked? */
625 case BST_WAITING_FOR_SYSOP:
626 /* Someone is waiting, wake him */
627 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
628 dev->dev_blocked = BST_MOUNT;
629 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
631 pthread_cond_broadcast(&dev->wait_next_vol);
632 pthread_cond_broadcast(&wait_device_release);
635 /* In both of these two cases, we (the user) unmounted the Volume */
636 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
638 if (dev->is_autochanger() && slot > 0) {
639 try_autoload_device(jcr, slot, "");
641 /* We freed the device, so reopen it and wake any waiting threads */
642 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
643 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
645 if (dev->dev_blocked == BST_UNMOUNTED) {
646 /* We blocked the device, so unblock it */
647 Dmsg0(100, "Unmounted. Unblocking device\n");
652 read_dev_volume_label(dcr);
653 if (dev->dev_blocked == BST_UNMOUNTED) {
654 /* We blocked the device, so unblock it */
655 Dmsg0(100, "Unmounted. Unblocking device\n");
656 read_label(dcr); /* this should not be necessary */
659 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
660 dev->dev_blocked = BST_MOUNT;
662 if (dev->is_labeled()) {
663 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
664 dev->print_name(), dev->VolHdr.VolumeName);
666 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
667 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
670 pthread_cond_broadcast(&dev->wait_next_vol);
671 pthread_cond_broadcast(&wait_device_release);
674 case BST_DOING_ACQUIRE:
675 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
679 case BST_WRITING_LABEL:
680 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
684 case BST_NOT_BLOCKED:
685 if (dev->is_autochanger() && slot > 0) {
686 try_autoload_device(jcr, slot, "");
688 if (dev->is_open()) {
689 if (dev->is_labeled()) {
690 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
691 dev->print_name(), dev->VolHdr.VolumeName);
693 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
694 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
697 } else if (dev->is_tape()) {
698 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
699 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
704 if (dev->is_labeled()) {
705 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
706 dev->print_name(), dev->VolHdr.VolumeName);
708 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
709 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
712 } else if (dev->is_dvd()) {
713 if (mount_dvd(dev, 1)) {
714 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
717 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
719 } else { /* must be file */
720 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
726 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
733 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
736 pm_strcpy(jcr->errmsg, dir->msg);
737 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
739 bnet_sig(dir, BNET_EOD);
744 * unmount command from Director
746 static bool unmount_cmd(JCR *jcr)
749 BSOCK *dir = jcr->dir_bsock;
754 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
755 dcr = find_device(jcr, devname, drive);
758 P(dev->mutex); /* Use P to avoid indefinite block */
759 if (!dev->is_open()) {
760 if (!dev->is_busy()) {
761 unload_autochanger(jcr->dcr, -1);
764 if (unmount_dvd(dev, 0)) {
765 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
768 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
771 Dmsg0(90, "Device already unmounted\n");
772 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
775 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
776 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
778 if (!unload_autochanger(jcr->dcr, -1)) {
781 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
782 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
784 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
785 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
789 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
790 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
793 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
794 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
797 } else if (dev->is_busy()) {
798 send_dir_busy_message(dir, dev);
799 } else { /* device not being used */
800 Dmsg0(90, "Device not in use, unmounting\n");
801 /* On FreeBSD, I am having ASSERT() failures in block_device()
802 * and I can only imagine that the thread id that we are
803 * leaving in no_wait_id is being re-used. So here,
804 * we simply do it by hand. Gross, but a solution.
806 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
807 dev->dev_blocked = BST_UNMOUNTED;
809 if (!unload_autochanger(jcr->dcr, -1)) {
812 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
813 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
815 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
823 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
826 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
827 pm_strcpy(jcr->errmsg, dir->msg);
828 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
830 bnet_sig(dir, BNET_EOD);
835 * Release command from Director. This rewinds the device and if
836 * configured does a offline and ensures that Bacula will
837 * re-read the label of the tape before continuing. This gives
838 * the operator the chance to change the tape anytime before the
841 static bool release_cmd(JCR *jcr)
844 BSOCK *dir = jcr->dir_bsock;
849 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
850 dcr = find_device(jcr, devname, drive);
853 P(dev->mutex); /* Use P to avoid indefinite block */
854 if (!dev->is_open()) {
855 Dmsg0(90, "Device already released\n");
856 bnet_fsend(dir, _("3921 Device %s already released.\n"),
859 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
860 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
861 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
863 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
866 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
867 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
870 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
871 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
874 } else if (dev->is_busy()) {
875 send_dir_busy_message(dir, dev);
876 } else { /* device not being used */
877 Dmsg0(90, "Device not in use, unmounting\n");
878 release_volume(jcr->dcr);
879 bnet_fsend(dir, _("3022 Device %s released.\n"),
886 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
889 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
890 pm_strcpy(jcr->errmsg, dir->msg);
891 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
893 bnet_sig(dir, BNET_EOD);
898 static bool bootstrap_cmd(JCR *jcr)
900 return get_bootstrap_file(jcr, jcr->dir_bsock);
904 * Autochanger command from Director
906 static bool changer_cmd(JCR *jcr)
909 BSOCK *dir = jcr->dir_bsock;
912 const char *cmd = NULL;
915 * A safe_cmd may call autochanger script but does not load/unload
916 * slots so it can be done at the same time that the drive is open.
918 bool safe_cmd = false;
920 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
922 safe_cmd = ok = true;
923 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
925 safe_cmd = ok = true;
926 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
928 safe_cmd = ok = true;
931 dcr = find_device(jcr, devname, -1);
934 P(dev->mutex); /* Use P to avoid indefinite block */
935 if (!dev->device->changer_res) {
936 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
938 /* Under certain "safe" conditions, we can steal the lock */
939 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
940 autochanger_cmd(dcr, dir, cmd);
941 } else if (dev->is_busy() || dev->is_blocked()) {
942 send_dir_busy_message(dir, dev);
943 } else { /* device not being used */
944 autochanger_cmd(dcr, dir, cmd);
950 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
952 } else { /* error on scanf */
953 pm_strcpy(jcr->errmsg, dir->msg);
954 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
957 bnet_sig(dir, BNET_EOD);
962 * Read and return the Volume label
964 static bool readlabel_cmd(JCR *jcr)
967 BSOCK *dir = jcr->dir_bsock;
973 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
974 &Slot, &drive) == 3) {
975 dcr = find_device(jcr, devname, drive);
978 P(dev->mutex); /* Use P to avoid indefinite block */
979 if (!dev->is_open()) {
980 read_volume_label(jcr, dev, Slot);
982 /* Under certain "safe" conditions, we can steal the lock */
983 } else if (dev->can_steal_lock()) {
984 read_volume_label(jcr, dev, Slot);
985 } else if (dev->is_busy() || dev->is_blocked()) {
986 send_dir_busy_message(dir, dev);
987 } else { /* device not being used */
988 read_volume_label(jcr, dev, Slot);
994 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
997 pm_strcpy(jcr->errmsg, dir->msg);
998 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
1000 bnet_sig(dir, BNET_EOD);
1006 * Read the tape label
1008 * Enter with the mutex set
1010 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
1012 BSOCK *dir = jcr->dir_bsock;
1014 DCR *dcr = jcr->dcr;
1017 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1019 if (!try_autoload_device(jcr, Slot, "")) {
1020 goto bail_out; /* error */
1023 dev->clear_labeled(); /* force read of label */
1024 switch (read_dev_volume_label(dcr)) {
1026 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1027 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1028 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1031 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1032 dev->print_name(), jcr->errmsg);
1037 give_back_device_lock(dev, &hold);
1041 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
1043 DCR *dcr = jcr->dcr;
1044 BSOCK *dir = jcr->dir_bsock;
1046 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1047 dcr->VolCatInfo.Slot = slot;
1048 dcr->VolCatInfo.InChanger = slot > 0;
1049 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1055 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1057 if (dev->is_blocked()) {
1058 switch (dev->dev_blocked) {
1060 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
1063 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1064 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1067 case BST_WAITING_FOR_SYSOP:
1068 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1071 case BST_DOING_ACQUIRE:
1072 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1075 case BST_WRITING_LABEL:
1076 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1080 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1084 } else if (dev->can_read()) {
1085 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1086 dev->print_name());;
1088 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1089 dev->print_name(), dev->num_writers);