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 /* Change the partition file name */
451 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
452 if (!dev->truncate(dcr)) {
453 bnet_fsend(dir, _("3912 Failed to truncate previous DVD volume.\n"));
457 free_volume(dev); /* release old volume name */
458 /* Fall through wanted! */
461 if (!write_new_volume_label_to_dev(dcr, newname, poolname, true /* write dvd now */)) {
462 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
465 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
466 /* The following 3000 OK label. string is scanned in ua_label.c */
467 bnet_fsend(dir, "3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
468 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
469 dev->is_dvd()?1:0, newname, dev->print_name());
472 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
475 bnet_fsend(dir, _("3913 Cannot label Volume. "
476 "Unknown status %d from read_volume_label()\n"), label_status);
481 if (!dev->is_open()) {
484 give_back_device_lock(dev, &hold);
490 * Read the tape label
492 * Enter with the mutex set
494 static bool read_label(DCR *dcr)
498 BSOCK *dir = jcr->dir_bsock;
500 DEVICE *dev = dcr->dev;
502 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
504 dcr->VolumeName[0] = 0;
505 dev->clear_labeled(); /* force read of label */
506 switch (read_dev_volume_label(dcr)) {
508 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
512 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
513 dev->print_name(), jcr->errmsg);
517 give_back_device_lock(dev, &hold);
522 * Searches for device by name, and if found, creates a dcr and
525 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
528 AUTOCHANGER *changer;
532 unbash_spaces(devname);
533 foreach_res(device, R_DEVICE) {
534 /* Find resource, and make sure we were able to open it */
535 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
537 device->dev = init_dev(jcr, device);
540 Jmsg(jcr, M_WARNING, 0, _("\n"
541 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
545 Dmsg1(20, "Found device %s\n", device->hdr.name);
551 foreach_res(changer, R_AUTOCHANGER) {
552 /* Find resource, and make sure we were able to open it */
553 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
554 /* Try each device in this AutoChanger */
555 foreach_alist(device, changer->device) {
556 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
558 device->dev = init_dev(jcr, device);
561 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
562 Jmsg(jcr, M_WARNING, 0, _("\n"
563 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
564 device->hdr.name, devname.c_str());
567 if (!device->dev->autoselect) {
568 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
569 continue; /* device is not available */
571 if (drive < 0 || drive == (int)device->dev->drive_index) {
572 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
576 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
577 devname.c_str(), drive, (int)device->dev->drive_index);
579 break; /* we found it but could not open a device */
585 Dmsg1(100, "Found device %s\n", device->hdr.name);
586 dcr = new_dcr(jcr, device->dev);
587 dcr->device = device;
595 * Mount command from Director
597 static bool mount_cmd(JCR *jcr)
600 BSOCK *dir = jcr->dir_bsock;
607 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
610 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
613 dcr = find_device(jcr, devname, drive);
616 P(dev->mutex); /* Use P to avoid indefinite block */
617 Dmsg1(100, "mount cmd blocked=%d\n", dev->dev_blocked);
618 switch (dev->dev_blocked) { /* device blocked? */
619 case BST_WAITING_FOR_SYSOP:
620 /* Someone is waiting, wake him */
621 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
622 dev->dev_blocked = BST_MOUNT;
623 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
625 pthread_cond_broadcast(&dev->wait_next_vol);
626 pthread_cond_broadcast(&wait_device_release);
629 /* In both of these two cases, we (the user) unmounted the Volume */
630 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
632 if (dev->is_autochanger() && slot > 0) {
633 try_autoload_device(jcr, slot, "");
635 /* We freed the device, so reopen it and wake any waiting threads */
636 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
637 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
639 if (dev->dev_blocked == BST_UNMOUNTED) {
640 /* We blocked the device, so unblock it */
641 Dmsg0(100, "Unmounted. Unblocking device\n");
646 read_dev_volume_label(dcr);
647 if (dev->dev_blocked == BST_UNMOUNTED) {
648 /* We blocked the device, so unblock it */
649 Dmsg0(100, "Unmounted. Unblocking device\n");
650 read_label(dcr); /* this should not be necessary */
653 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
654 dev->dev_blocked = BST_MOUNT;
656 if (dev->is_labeled()) {
657 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
658 dev->print_name(), dev->VolHdr.VolumeName);
660 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
661 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
664 pthread_cond_broadcast(&dev->wait_next_vol);
665 pthread_cond_broadcast(&wait_device_release);
668 case BST_DOING_ACQUIRE:
669 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
673 case BST_WRITING_LABEL:
674 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
678 case BST_NOT_BLOCKED:
679 if (dev->is_autochanger() && slot > 0) {
680 try_autoload_device(jcr, slot, "");
682 if (dev->is_open()) {
683 if (dev->is_labeled()) {
684 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
685 dev->print_name(), dev->VolHdr.VolumeName);
687 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
688 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
691 } else if (dev->is_tape()) {
692 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
693 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
698 if (dev->is_labeled()) {
699 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
700 dev->print_name(), dev->VolHdr.VolumeName);
702 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
703 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
706 } else if (dev->is_dvd()) {
707 if (mount_dvd(dev, 1)) {
708 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
711 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
713 } else { /* must be file */
714 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
720 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
727 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
730 pm_strcpy(jcr->errmsg, dir->msg);
731 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
733 bnet_sig(dir, BNET_EOD);
738 * unmount command from Director
740 static bool unmount_cmd(JCR *jcr)
743 BSOCK *dir = jcr->dir_bsock;
748 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
749 dcr = find_device(jcr, devname, drive);
752 P(dev->mutex); /* Use P to avoid indefinite block */
753 if (!dev->is_open()) {
754 if (!dev->is_busy()) {
755 unload_autochanger(jcr->dcr, -1);
758 if (unmount_dvd(dev, 0)) {
759 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
762 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
765 Dmsg0(90, "Device already unmounted\n");
766 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
769 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
770 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
772 if (!unload_autochanger(jcr->dcr, -1)) {
775 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
776 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
778 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
779 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
783 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
784 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
787 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
788 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
791 } else if (dev->is_busy()) {
792 send_dir_busy_message(dir, dev);
793 } else { /* device not being used */
794 Dmsg0(90, "Device not in use, unmounting\n");
795 /* On FreeBSD, I am having ASSERT() failures in block_device()
796 * and I can only imagine that the thread id that we are
797 * leaving in no_wait_id is being re-used. So here,
798 * we simply do it by hand. Gross, but a solution.
800 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
801 dev->dev_blocked = BST_UNMOUNTED;
803 if (!unload_autochanger(jcr->dcr, -1)) {
806 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
807 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
809 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
817 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
820 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
821 pm_strcpy(jcr->errmsg, dir->msg);
822 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
824 bnet_sig(dir, BNET_EOD);
829 * Release command from Director. This rewinds the device and if
830 * configured does a offline and ensures that Bacula will
831 * re-read the label of the tape before continuing. This gives
832 * the operator the chance to change the tape anytime before the
835 static bool release_cmd(JCR *jcr)
838 BSOCK *dir = jcr->dir_bsock;
843 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
844 dcr = find_device(jcr, devname, drive);
847 P(dev->mutex); /* Use P to avoid indefinite block */
848 if (!dev->is_open()) {
849 Dmsg0(90, "Device already released\n");
850 bnet_fsend(dir, _("3921 Device %s already released.\n"),
853 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
854 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
855 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
857 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
860 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
861 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
864 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
865 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
868 } else if (dev->is_busy()) {
869 send_dir_busy_message(dir, dev);
870 } else { /* device not being used */
871 Dmsg0(90, "Device not in use, unmounting\n");
872 release_volume(jcr->dcr);
873 bnet_fsend(dir, _("3022 Device %s released.\n"),
880 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
883 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
884 pm_strcpy(jcr->errmsg, dir->msg);
885 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
887 bnet_sig(dir, BNET_EOD);
892 static bool bootstrap_cmd(JCR *jcr)
894 return get_bootstrap_file(jcr, jcr->dir_bsock);
898 * Autochanger command from Director
900 static bool changer_cmd(JCR *jcr)
903 BSOCK *dir = jcr->dir_bsock;
906 const char *cmd = NULL;
909 * A safe_cmd may call autochanger script but does not load/unload
910 * slots so it can be done at the same time that the drive is open.
912 bool safe_cmd = false;
914 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
916 safe_cmd = ok = true;
917 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
919 safe_cmd = ok = true;
920 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
922 safe_cmd = ok = true;
925 dcr = find_device(jcr, devname, -1);
928 P(dev->mutex); /* Use P to avoid indefinite block */
929 if (!dev->device->changer_res) {
930 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
932 /* Under certain "safe" conditions, we can steal the lock */
933 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
934 autochanger_cmd(dcr, dir, cmd);
935 } else if (dev->is_busy() || dev->is_blocked()) {
936 send_dir_busy_message(dir, dev);
937 } else { /* device not being used */
938 autochanger_cmd(dcr, dir, cmd);
944 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
946 } else { /* error on scanf */
947 pm_strcpy(jcr->errmsg, dir->msg);
948 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
951 bnet_sig(dir, BNET_EOD);
956 * Read and return the Volume label
958 static bool readlabel_cmd(JCR *jcr)
961 BSOCK *dir = jcr->dir_bsock;
967 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
968 &Slot, &drive) == 3) {
969 dcr = find_device(jcr, devname, drive);
972 P(dev->mutex); /* Use P to avoid indefinite block */
973 if (!dev->is_open()) {
974 read_volume_label(jcr, dev, Slot);
976 /* Under certain "safe" conditions, we can steal the lock */
977 } else if (dev->can_steal_lock()) {
978 read_volume_label(jcr, dev, Slot);
979 } else if (dev->is_busy() || dev->is_blocked()) {
980 send_dir_busy_message(dir, dev);
981 } else { /* device not being used */
982 read_volume_label(jcr, dev, Slot);
988 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
991 pm_strcpy(jcr->errmsg, dir->msg);
992 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
994 bnet_sig(dir, BNET_EOD);
1000 * Read the tape label
1002 * Enter with the mutex set
1004 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
1006 BSOCK *dir = jcr->dir_bsock;
1008 DCR *dcr = jcr->dcr;
1011 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1013 if (!try_autoload_device(jcr, Slot, "")) {
1014 goto bail_out; /* error */
1017 dev->clear_labeled(); /* force read of label */
1018 switch (read_dev_volume_label(dcr)) {
1020 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1021 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1022 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1025 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1026 dev->print_name(), jcr->errmsg);
1031 give_back_device_lock(dev, &hold);
1035 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
1037 DCR *dcr = jcr->dcr;
1038 BSOCK *dir = jcr->dir_bsock;
1040 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1041 dcr->VolCatInfo.Slot = slot;
1042 dcr->VolCatInfo.InChanger = slot > 0;
1043 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1049 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1051 if (dev->is_blocked()) {
1052 switch (dev->dev_blocked) {
1054 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
1057 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1058 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1061 case BST_WAITING_FOR_SYSOP:
1062 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1065 case BST_DOING_ACQUIRE:
1066 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1069 case BST_WRITING_LABEL:
1070 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1074 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1078 } else if (dev->can_read()) {
1079 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1080 dev->print_name());;
1082 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1083 dev->print_name(), dev->num_writers);