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;
395 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
396 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
398 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
399 if (relabel && dev->is_dvd()) {
400 dcr->VolCatInfo.VolCatParts=1;
403 if (!try_autoload_device(dcr->jcr, slot, volname)) {
404 goto bail_out; /* error */
407 /* Ensure that the device is open -- autoload_device() closes it */
408 if (dev->is_tape()) {
409 mode = OPEN_READ_WRITE;
411 mode = CREATE_READ_WRITE;
414 bstrncpy(dcr->VolCatInfo.VolCatName, volname, sizeof(dcr->VolCatInfo.VolCatName));
417 if (dev->open(dcr, mode) < 0) {
418 bnet_fsend(dir, _("3910 Unable to open device %s: ERR=%s\n"),
419 dev->print_name(), dev->strerror());
423 /* See what we have for a Volume */
424 label_status = read_dev_volume_label(dcr);
426 switch(label_status) {
428 case VOL_VERSION_ERROR:
429 case VOL_LABEL_ERROR:
433 "3920 Cannot label Volume because it is already labeled: \"%s\"\n"),
434 dev->VolHdr.VolumeName);
438 /* Relabel request. If oldname matches, continue */
439 if (strcmp(oldname, dev->VolHdr.VolumeName) != 0) {
440 bnet_fsend(dir, _("3921 Wrong volume mounted.\n"));
443 if (dev->label_type != B_BACULA_LABEL) {
444 bnet_fsend(dir, _("3922 Cannot relabel an ANSI/IBM labeled Volume.\n"));
447 if (relabel && dev->is_dvd()) {
448 /* Change the partition file name */
449 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
450 if (!dev->truncate(dcr)) {
451 bnet_fsend(dir, _("3912 Failed to truncate previous DVD volume.\n"));
455 free_volume(dev); /* release old volume name */
456 /* Fall through wanted! */
459 if (!write_new_volume_label_to_dev(dcr, newname, poolname, true /* write dvd now */)) {
460 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
463 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
464 /* The following 3000 OK label. string is scanned in ua_label.c */
465 bnet_fsend(dir, "3000 OK label. DVD=%d Volume=\"%s\" Device=\"%s\"\n",
466 dev->is_dvd()?1:0, newname, dev->print_name());
469 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
472 bnet_fsend(dir, _("3913 Cannot label Volume. "
473 "Unknown status %d from read_volume_label()\n"), label_status);
478 if (!dev->is_open()) {
481 give_back_device_lock(dev, &hold);
487 * Read the tape label
489 * Enter with the mutex set
491 static bool read_label(DCR *dcr)
495 BSOCK *dir = jcr->dir_bsock;
497 DEVICE *dev = dcr->dev;
499 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
501 dcr->VolumeName[0] = 0;
502 dev->clear_labeled(); /* force read of label */
503 switch (read_dev_volume_label(dcr)) {
505 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
509 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
510 dev->print_name(), jcr->errmsg);
514 give_back_device_lock(dev, &hold);
519 * Searches for device by name, and if found, creates a dcr and
522 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
525 AUTOCHANGER *changer;
529 unbash_spaces(devname);
530 foreach_res(device, R_DEVICE) {
531 /* Find resource, and make sure we were able to open it */
532 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
534 device->dev = init_dev(jcr, device);
537 Jmsg(jcr, M_WARNING, 0, _("\n"
538 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
542 Dmsg1(20, "Found device %s\n", device->hdr.name);
548 foreach_res(changer, R_AUTOCHANGER) {
549 /* Find resource, and make sure we were able to open it */
550 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
551 /* Try each device in this AutoChanger */
552 foreach_alist(device, changer->device) {
553 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
555 device->dev = init_dev(jcr, device);
558 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
559 Jmsg(jcr, M_WARNING, 0, _("\n"
560 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
561 device->hdr.name, devname.c_str());
564 if (!device->dev->autoselect) {
565 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
566 continue; /* device is not available */
568 if (drive < 0 || drive == (int)device->dev->drive_index) {
569 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
573 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
574 devname.c_str(), drive, (int)device->dev->drive_index);
576 break; /* we found it but could not open a device */
582 Dmsg1(100, "Found device %s\n", device->hdr.name);
583 dcr = new_dcr(jcr, device->dev);
584 dcr->device = device;
592 * Mount command from Director
594 static bool mount_cmd(JCR *jcr)
597 BSOCK *dir = jcr->dir_bsock;
604 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
607 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
610 dcr = find_device(jcr, devname, drive);
613 P(dev->mutex); /* Use P to avoid indefinite block */
614 Dmsg1(100, "mount cmd blocked=%d\n", dev->dev_blocked);
615 switch (dev->dev_blocked) { /* device blocked? */
616 case BST_WAITING_FOR_SYSOP:
617 /* Someone is waiting, wake him */
618 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
619 dev->dev_blocked = BST_MOUNT;
620 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
622 pthread_cond_broadcast(&dev->wait_next_vol);
623 pthread_cond_broadcast(&wait_device_release);
626 /* In both of these two cases, we (the user) unmounted the Volume */
627 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
629 if (dev->is_autochanger() && slot > 0) {
630 try_autoload_device(jcr, slot, "");
632 /* We freed the device, so reopen it and wake any waiting threads */
633 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
634 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
636 if (dev->dev_blocked == BST_UNMOUNTED) {
637 /* We blocked the device, so unblock it */
638 Dmsg0(100, "Unmounted. Unblocking device\n");
643 read_dev_volume_label(dcr);
644 if (dev->dev_blocked == BST_UNMOUNTED) {
645 /* We blocked the device, so unblock it */
646 Dmsg0(100, "Unmounted. Unblocking device\n");
647 read_label(dcr); /* this should not be necessary */
650 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
651 dev->dev_blocked = BST_MOUNT;
653 if (dev->is_labeled()) {
654 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
655 dev->print_name(), dev->VolHdr.VolumeName);
657 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
658 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
661 pthread_cond_broadcast(&dev->wait_next_vol);
662 pthread_cond_broadcast(&wait_device_release);
665 case BST_DOING_ACQUIRE:
666 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
670 case BST_WRITING_LABEL:
671 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
675 case BST_NOT_BLOCKED:
676 if (dev->is_autochanger() && slot > 0) {
677 try_autoload_device(jcr, slot, "");
679 if (dev->is_open()) {
680 if (dev->is_labeled()) {
681 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
682 dev->print_name(), dev->VolHdr.VolumeName);
684 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
685 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
688 } else if (dev->is_tape()) {
689 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
690 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
695 if (dev->is_labeled()) {
696 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
697 dev->print_name(), dev->VolHdr.VolumeName);
699 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
700 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
703 } else if (dev->is_dvd()) {
704 if (mount_dvd(dev, 1)) {
705 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
708 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
710 } else { /* must be file */
711 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
717 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
724 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
727 pm_strcpy(jcr->errmsg, dir->msg);
728 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
730 bnet_sig(dir, BNET_EOD);
735 * unmount command from Director
737 static bool unmount_cmd(JCR *jcr)
740 BSOCK *dir = jcr->dir_bsock;
745 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
746 dcr = find_device(jcr, devname, drive);
749 P(dev->mutex); /* Use P to avoid indefinite block */
750 if (!dev->is_open()) {
751 if (!dev->is_busy()) {
752 unload_autochanger(jcr->dcr, -1);
755 if (unmount_dvd(dev, 0)) {
756 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
759 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
762 Dmsg0(90, "Device already unmounted\n");
763 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
766 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
767 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
769 if (!unload_autochanger(jcr->dcr, -1)) {
772 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
773 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
775 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
776 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
780 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
781 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
784 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
785 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
788 } else if (dev->is_busy()) {
789 send_dir_busy_message(dir, dev);
790 } else { /* device not being used */
791 Dmsg0(90, "Device not in use, unmounting\n");
792 /* On FreeBSD, I am having ASSERT() failures in block_device()
793 * and I can only imagine that the thread id that we are
794 * leaving in no_wait_id is being re-used. So here,
795 * we simply do it by hand. Gross, but a solution.
797 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
798 dev->dev_blocked = BST_UNMOUNTED;
800 if (!unload_autochanger(jcr->dcr, -1)) {
803 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
804 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
806 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
814 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
817 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
818 pm_strcpy(jcr->errmsg, dir->msg);
819 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
821 bnet_sig(dir, BNET_EOD);
826 * Release command from Director. This rewinds the device and if
827 * configured does a offline and ensures that Bacula will
828 * re-read the label of the tape before continuing. This gives
829 * the operator the chance to change the tape anytime before the
832 static bool release_cmd(JCR *jcr)
835 BSOCK *dir = jcr->dir_bsock;
840 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
841 dcr = find_device(jcr, devname, drive);
844 P(dev->mutex); /* Use P to avoid indefinite block */
845 if (!dev->is_open()) {
846 Dmsg0(90, "Device already released\n");
847 bnet_fsend(dir, _("3921 Device %s already released.\n"),
850 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
851 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
852 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
854 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
857 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
858 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
861 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
862 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
865 } else if (dev->is_busy()) {
866 send_dir_busy_message(dir, dev);
867 } else { /* device not being used */
868 Dmsg0(90, "Device not in use, unmounting\n");
869 release_volume(jcr->dcr);
870 bnet_fsend(dir, _("3022 Device %s released.\n"),
877 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
880 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
881 pm_strcpy(jcr->errmsg, dir->msg);
882 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
884 bnet_sig(dir, BNET_EOD);
889 static bool bootstrap_cmd(JCR *jcr)
891 return get_bootstrap_file(jcr, jcr->dir_bsock);
895 * Autochanger command from Director
897 static bool changer_cmd(JCR *jcr)
900 BSOCK *dir = jcr->dir_bsock;
903 const char *cmd = NULL;
907 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
910 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
913 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
918 dcr = find_device(jcr, devname, -1);
921 P(dev->mutex); /* Use P to avoid indefinite block */
922 if (!dev->device->changer_res) {
923 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
925 /* Under certain "safe" conditions, we can steal the lock */
926 } else if (dolist || !dev->is_open() || dev->can_steal_lock()) {
927 autochanger_cmd(dcr, dir, cmd);
928 } else if (dev->is_busy() || dev->is_blocked()) {
929 send_dir_busy_message(dir, dev);
930 } else { /* device not being used */
931 autochanger_cmd(dcr, dir, cmd);
937 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
939 } else { /* error on scanf */
940 pm_strcpy(jcr->errmsg, dir->msg);
941 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
944 bnet_sig(dir, BNET_EOD);
949 * Read and return the Volume label
951 static bool readlabel_cmd(JCR *jcr)
954 BSOCK *dir = jcr->dir_bsock;
960 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
961 &Slot, &drive) == 3) {
962 dcr = find_device(jcr, devname, drive);
965 P(dev->mutex); /* Use P to avoid indefinite block */
966 if (!dev->is_open()) {
967 read_volume_label(jcr, dev, Slot);
969 /* Under certain "safe" conditions, we can steal the lock */
970 } else if (dev->can_steal_lock()) {
971 read_volume_label(jcr, dev, Slot);
972 } else if (dev->is_busy() || dev->is_blocked()) {
973 send_dir_busy_message(dir, dev);
974 } else { /* device not being used */
975 read_volume_label(jcr, dev, Slot);
981 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
984 pm_strcpy(jcr->errmsg, dir->msg);
985 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
987 bnet_sig(dir, BNET_EOD);
993 * Read the tape label
995 * Enter with the mutex set
997 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
999 BSOCK *dir = jcr->dir_bsock;
1001 DCR *dcr = jcr->dcr;
1004 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1006 if (!try_autoload_device(jcr, Slot, "")) {
1007 goto bail_out; /* error */
1010 dev->clear_labeled(); /* force read of label */
1011 switch (read_dev_volume_label(dcr)) {
1013 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1014 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1015 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1018 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1019 dev->print_name(), jcr->errmsg);
1024 give_back_device_lock(dev, &hold);
1028 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
1030 DCR *dcr = jcr->dcr;
1031 BSOCK *dir = jcr->dir_bsock;
1033 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1034 dcr->VolCatInfo.Slot = slot;
1035 dcr->VolCatInfo.InChanger = slot > 0;
1036 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1042 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1044 if (dev->is_blocked()) {
1045 switch (dev->dev_blocked) {
1047 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
1050 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1051 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1054 case BST_WAITING_FOR_SYSOP:
1055 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1058 case BST_DOING_ACQUIRE:
1059 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1062 case BST_WRITING_LABEL:
1063 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1067 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1071 } else if (dev->can_read()) {
1072 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1073 dev->print_name());;
1075 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1076 dev->print_name(), dev->num_writers);