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 == 1) ? oldname : newname;
396 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
397 Dmsg1(100, "Stole device %s lock, writing label.\n", dev->print_name());
400 Dmsg0(90, "try_autoload_device - looking for volume_info\n");
401 if (!try_autoload_device(dcr->jcr, slot, volname)) {
402 goto bail_out; /* error */
405 /* Ensure that the device is open -- autoload_device() closes it */
406 if (dev->is_tape()) {
407 mode = OPEN_READ_WRITE;
409 mode = CREATE_READ_WRITE;
413 dev->truncating = true; /* let open() know we will truncate it */
415 /* Set old volume name for open if relabeling */
416 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 /* Set new volume name */
427 bstrncpy(dcr->VolCatInfo.VolCatName, newname, sizeof(dcr->VolCatInfo.VolCatName));
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 /* Fall through wanted! */
452 if (!write_new_volume_label_to_dev(dcr, newname, poolname,
453 relabel, true /* write dvd now */)) {
454 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
457 bstrncpy(dcr->VolumeName, newname, sizeof(dcr->VolumeName));
458 /* The following 3000 OK label. string is scanned in ua_label.c */
459 bnet_fsend(dir, "3000 OK label. VolBytes=%s DVD=%d Volume=\"%s\" Device=%s\n",
460 edit_uint64(dev->VolCatInfo.VolCatBytes, ed1),
461 dev->is_dvd()?1:0, newname, dev->print_name());
464 bnet_fsend(dir, _("3912 Failed to label Volume: ERR=%s\n"), dev->bstrerror());
467 bnet_fsend(dir, _("3913 Cannot label Volume. "
468 "Unknown status %d from read_volume_label()\n"), label_status);
473 if (!dev->is_open()) {
476 give_back_device_lock(dev, &hold);
482 * Read the tape label
484 * Enter with the mutex set
486 static bool read_label(DCR *dcr)
490 BSOCK *dir = jcr->dir_bsock;
492 DEVICE *dev = dcr->dev;
494 steal_device_lock(dev, &hold, BST_DOING_ACQUIRE);
496 dcr->VolumeName[0] = 0;
497 dev->clear_labeled(); /* force read of label */
498 switch (read_dev_volume_label(dcr)) {
500 bnet_fsend(dir, _("3001 Mounted Volume: %s\n"), dev->VolHdr.VolumeName);
504 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
505 dev->print_name(), jcr->errmsg);
509 give_back_device_lock(dev, &hold);
514 * Searches for device by name, and if found, creates a dcr and
517 static DCR *find_device(JCR *jcr, POOL_MEM &devname, int drive)
520 AUTOCHANGER *changer;
524 unbash_spaces(devname);
525 foreach_res(device, R_DEVICE) {
526 /* Find resource, and make sure we were able to open it */
527 if (fnmatch(device->hdr.name, devname.c_str(), 0) == 0) {
529 device->dev = init_dev(jcr, device);
532 Jmsg(jcr, M_WARNING, 0, _("\n"
533 " Device \"%s\" requested by DIR could not be opened or does not exist.\n"),
537 Dmsg1(20, "Found device %s\n", device->hdr.name);
543 foreach_res(changer, R_AUTOCHANGER) {
544 /* Find resource, and make sure we were able to open it */
545 if (fnmatch(devname.c_str(), changer->hdr.name, 0) == 0) {
546 /* Try each device in this AutoChanger */
547 foreach_alist(device, changer->device) {
548 Dmsg1(100, "Try changer device %s\n", device->hdr.name);
550 device->dev = init_dev(jcr, device);
553 Dmsg1(100, "Device %s could not be opened. Skipped\n", devname.c_str());
554 Jmsg(jcr, M_WARNING, 0, _("\n"
555 " Device \"%s\" in changer \"%s\" requested by DIR could not be opened or does not exist.\n"),
556 device->hdr.name, devname.c_str());
559 if (!device->dev->autoselect) {
560 Dmsg1(100, "Device %s not autoselect skipped.\n", devname.c_str());
561 continue; /* device is not available */
563 if (drive < 0 || drive == (int)device->dev->drive_index) {
564 Dmsg1(20, "Found changer device %s\n", device->hdr.name);
568 Dmsg3(100, "Device %s drive wrong: want=%d got=%d skipping\n",
569 devname.c_str(), drive, (int)device->dev->drive_index);
571 break; /* we found it but could not open a device */
577 Dmsg1(100, "Found device %s\n", device->hdr.name);
578 dcr = new_dcr(jcr, device->dev);
579 dcr->device = device;
587 * Mount command from Director
589 static bool mount_cmd(JCR *jcr)
592 BSOCK *dir = jcr->dir_bsock;
599 ok = sscanf(dir->msg, "mount %127s drive=%d slot=%d", devname.c_str(),
602 ok = sscanf(dir->msg, "mount %127s drive=%d", devname.c_str(), &drive) == 2;
605 dcr = find_device(jcr, devname, drive);
608 P(dev->mutex); /* Use P to avoid indefinite block */
609 Dmsg1(100, "mount cmd blocked=%d\n", dev->dev_blocked);
610 switch (dev->dev_blocked) { /* device blocked? */
611 case BST_WAITING_FOR_SYSOP:
612 /* Someone is waiting, wake him */
613 Dmsg0(100, "Waiting for mount. Attempting to wake thread\n");
614 dev->dev_blocked = BST_MOUNT;
615 bnet_fsend(dir, "3001 OK mount. Device=%s\n",
617 pthread_cond_broadcast(&dev->wait_next_vol);
618 pthread_cond_broadcast(&wait_device_release);
621 /* In both of these two cases, we (the user) unmounted the Volume */
622 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
624 if (dev->is_autochanger() && slot > 0) {
625 try_autoload_device(jcr, slot, "");
627 /* We freed the device, so reopen it and wake any waiting threads */
628 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
629 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
631 if (dev->dev_blocked == BST_UNMOUNTED) {
632 /* We blocked the device, so unblock it */
633 Dmsg0(100, "Unmounted. Unblocking device\n");
638 read_dev_volume_label(dcr);
639 if (dev->dev_blocked == BST_UNMOUNTED) {
640 /* We blocked the device, so unblock it */
641 Dmsg0(100, "Unmounted. Unblocking device\n");
642 read_label(dcr); /* this should not be necessary */
645 Dmsg0(100, "Unmounted waiting for mount. Attempting to wake thread\n");
646 dev->dev_blocked = BST_MOUNT;
648 if (dev->is_labeled()) {
649 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
650 dev->print_name(), dev->VolHdr.VolumeName);
652 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
653 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
656 pthread_cond_broadcast(&dev->wait_next_vol);
657 pthread_cond_broadcast(&wait_device_release);
660 case BST_DOING_ACQUIRE:
661 bnet_fsend(dir, _("3001 Device %s is doing acquire.\n"),
665 case BST_WRITING_LABEL:
666 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
670 case BST_NOT_BLOCKED:
671 if (dev->is_autochanger() && slot > 0) {
672 try_autoload_device(jcr, slot, "");
674 if (dev->is_open()) {
675 if (dev->is_labeled()) {
676 bnet_fsend(dir, _("3001 Device %s is mounted with Volume \"%s\"\n"),
677 dev->print_name(), dev->VolHdr.VolumeName);
679 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
680 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
683 } else if (dev->is_tape()) {
684 if (dev->open(dcr, OPEN_READ_ONLY) < 0) {
685 bnet_fsend(dir, _("3901 open device failed: ERR=%s\n"),
690 if (dev->is_labeled()) {
691 bnet_fsend(dir, _("3001 Device %s is already mounted with Volume \"%s\"\n"),
692 dev->print_name(), dev->VolHdr.VolumeName);
694 bnet_fsend(dir, _("3905 Device %s open but no Bacula volume is mounted.\n"
695 "If this is not a blank tape, try unmounting and remounting the Volume.\n"),
698 } else if (dev->is_dvd()) {
699 if (mount_dvd(dev, 1)) {
700 bnet_fsend(dir, _("3002 Device %s is mounted.\n"),
703 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
705 } else { /* must be file */
706 bnet_fsend(dir, _("3906 File device %s is always mounted.\n"),
712 bnet_fsend(dir, _("3905 Bizarre wait state %d\n"), dev->dev_blocked);
719 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
722 pm_strcpy(jcr->errmsg, dir->msg);
723 bnet_fsend(dir, _("3909 Error scanning mount command: %s\n"), jcr->errmsg);
725 bnet_sig(dir, BNET_EOD);
730 * unmount command from Director
732 static bool unmount_cmd(JCR *jcr)
735 BSOCK *dir = jcr->dir_bsock;
740 if (sscanf(dir->msg, "unmount %127s drive=%d", devname.c_str(), &drive) == 2) {
741 dcr = find_device(jcr, devname, drive);
744 P(dev->mutex); /* Use P to avoid indefinite block */
745 if (!dev->is_open()) {
746 if (!dev->is_busy()) {
747 unload_autochanger(jcr->dcr, -1);
750 if (unmount_dvd(dev, 0)) {
751 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
754 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
757 Dmsg0(90, "Device already unmounted\n");
758 bnet_fsend(dir, _("3901 Device %s is already unmounted.\n"),
761 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP) {
762 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
764 if (!unload_autochanger(jcr->dcr, -1)) {
767 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
768 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
770 dev->dev_blocked = BST_UNMOUNTED_WAITING_FOR_SYSOP;
771 bnet_fsend(dir, _("3001 Device %s unmounted.\n"),
775 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
776 bnet_fsend(dir, _("3902 Device %s is busy in acquire.\n"),
779 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
780 bnet_fsend(dir, _("3903 Device %s is being labeled.\n"),
783 } else if (dev->is_busy()) {
784 send_dir_busy_message(dir, dev);
785 } else { /* device not being used */
786 Dmsg0(90, "Device not in use, unmounting\n");
787 /* On FreeBSD, I am having ASSERT() failures in block_device()
788 * and I can only imagine that the thread id that we are
789 * leaving in no_wait_id is being re-used. So here,
790 * we simply do it by hand. Gross, but a solution.
792 /* block_device(dev, BST_UNMOUNTED); replace with 2 lines below */
793 dev->dev_blocked = BST_UNMOUNTED;
795 if (!unload_autochanger(jcr->dcr, -1)) {
798 if (dev->is_dvd() && !unmount_dvd(dev, 0)) {
799 bnet_fsend(dir, _("3907 %s"), dev->bstrerror());
801 bnet_fsend(dir, _("3002 Device %s unmounted.\n"),
809 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
812 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
813 pm_strcpy(jcr->errmsg, dir->msg);
814 bnet_fsend(dir, _("3907 Error scanning unmount command: %s\n"), jcr->errmsg);
816 bnet_sig(dir, BNET_EOD);
821 * Release command from Director. This rewinds the device and if
822 * configured does a offline and ensures that Bacula will
823 * re-read the label of the tape before continuing. This gives
824 * the operator the chance to change the tape anytime before the
827 static bool release_cmd(JCR *jcr)
830 BSOCK *dir = jcr->dir_bsock;
835 if (sscanf(dir->msg, "release %127s drive=%d", devname.c_str(), &drive) == 2) {
836 dcr = find_device(jcr, devname, drive);
839 P(dev->mutex); /* Use P to avoid indefinite block */
840 if (!dev->is_open()) {
841 Dmsg0(90, "Device already released\n");
842 bnet_fsend(dir, _("3921 Device %s already released.\n"),
845 } else if (dev->dev_blocked == BST_WAITING_FOR_SYSOP ||
846 dev->dev_blocked == BST_UNMOUNTED_WAITING_FOR_SYSOP) {
847 Dmsg2(90, "%d waiter dev_block=%d. doing unmount\n", dev->num_waiting,
849 bnet_fsend(dir, _("3922 Device %s waiting for mount.\n"),
852 } else if (dev->dev_blocked == BST_DOING_ACQUIRE) {
853 bnet_fsend(dir, _("3923 Device %s is busy in acquire.\n"),
856 } else if (dev->dev_blocked == BST_WRITING_LABEL) {
857 bnet_fsend(dir, _("3914 Device %s is being labeled.\n"),
860 } else if (dev->is_busy()) {
861 send_dir_busy_message(dir, dev);
862 } else { /* device not being used */
863 Dmsg0(90, "Device not in use, unmounting\n");
864 release_volume(jcr->dcr);
865 bnet_fsend(dir, _("3022 Device %s released.\n"),
872 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
875 /* NB dir->msg gets clobbered in bnet_fsend, so save command */
876 pm_strcpy(jcr->errmsg, dir->msg);
877 bnet_fsend(dir, _("3927 Error scanning release command: %s\n"), jcr->errmsg);
879 bnet_sig(dir, BNET_EOD);
884 static bool bootstrap_cmd(JCR *jcr)
886 return get_bootstrap_file(jcr, jcr->dir_bsock);
890 * Autochanger command from Director
892 static bool changer_cmd(JCR *jcr)
895 BSOCK *dir = jcr->dir_bsock;
898 const char *cmd = NULL;
901 * A safe_cmd may call autochanger script but does not load/unload
902 * slots so it can be done at the same time that the drive is open.
904 bool safe_cmd = false;
906 if (sscanf(dir->msg, "autochanger list %127s", devname.c_str()) == 1) {
908 safe_cmd = ok = true;
909 } else if (sscanf(dir->msg, "autochanger slots %127s", devname.c_str()) == 1) {
911 safe_cmd = ok = true;
912 } else if (sscanf(dir->msg, "autochanger drives %127s", devname.c_str()) == 1) {
914 safe_cmd = ok = true;
917 dcr = find_device(jcr, devname, -1);
920 P(dev->mutex); /* Use P to avoid indefinite block */
921 if (!dev->device->changer_res) {
922 bnet_fsend(dir, _("3995 Device %s is not an autochanger.\n"),
924 /* Under certain "safe" conditions, we can steal the lock */
925 } else if (safe_cmd || !dev->is_open() || dev->can_steal_lock()) {
926 autochanger_cmd(dcr, dir, cmd);
927 } else if (dev->is_busy() || dev->is_blocked()) {
928 send_dir_busy_message(dir, dev);
929 } else { /* device not being used */
930 autochanger_cmd(dcr, dir, cmd);
936 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
938 } else { /* error on scanf */
939 pm_strcpy(jcr->errmsg, dir->msg);
940 bnet_fsend(dir, _("3908 Error scanning autocharger drives/list/slots command: %s\n"),
943 bnet_sig(dir, BNET_EOD);
948 * Read and return the Volume label
950 static bool readlabel_cmd(JCR *jcr)
953 BSOCK *dir = jcr->dir_bsock;
959 if (sscanf(dir->msg, "readlabel %127s Slot=%d drive=%d", devname.c_str(),
960 &Slot, &drive) == 3) {
961 dcr = find_device(jcr, devname, drive);
964 P(dev->mutex); /* Use P to avoid indefinite block */
965 if (!dev->is_open()) {
966 read_volume_label(jcr, dev, Slot);
968 /* Under certain "safe" conditions, we can steal the lock */
969 } else if (dev->can_steal_lock()) {
970 read_volume_label(jcr, dev, Slot);
971 } else if (dev->is_busy() || dev->is_blocked()) {
972 send_dir_busy_message(dir, dev);
973 } else { /* device not being used */
974 read_volume_label(jcr, dev, Slot);
980 bnet_fsend(dir, _("3999 Device \"%s\" not found or could not be opened.\n"), devname.c_str());
983 pm_strcpy(jcr->errmsg, dir->msg);
984 bnet_fsend(dir, _("3909 Error scanning readlabel command: %s\n"), jcr->errmsg);
986 bnet_sig(dir, BNET_EOD);
992 * Read the tape label
994 * Enter with the mutex set
996 static void read_volume_label(JCR *jcr, DEVICE *dev, int Slot)
998 BSOCK *dir = jcr->dir_bsock;
1000 DCR *dcr = jcr->dcr;
1003 steal_device_lock(dev, &hold, BST_WRITING_LABEL);
1005 if (!try_autoload_device(jcr, Slot, "")) {
1006 goto bail_out; /* error */
1009 dev->clear_labeled(); /* force read of label */
1010 switch (read_dev_volume_label(dcr)) {
1012 /* DO NOT add quotes around the Volume name. It is scanned in the DIR */
1013 bnet_fsend(dir, _("3001 Volume=%s Slot=%d\n"), dev->VolHdr.VolumeName, Slot);
1014 Dmsg1(100, "Volume: %s\n", dev->VolHdr.VolumeName);
1017 bnet_fsend(dir, _("3902 Cannot mount Volume on Storage Device %s because:\n%s"),
1018 dev->print_name(), jcr->errmsg);
1023 give_back_device_lock(dev, &hold);
1027 static bool try_autoload_device(JCR *jcr, int slot, const char *VolName)
1029 DCR *dcr = jcr->dcr;
1030 BSOCK *dir = jcr->dir_bsock;
1032 bstrncpy(dcr->VolumeName, VolName, sizeof(dcr->VolumeName));
1033 dcr->VolCatInfo.Slot = slot;
1034 dcr->VolCatInfo.InChanger = slot > 0;
1035 if (autoload_device(dcr, 0, dir) < 0) { /* autoload if possible */
1041 static void send_dir_busy_message(BSOCK *dir, DEVICE *dev)
1043 if (dev->is_blocked()) {
1044 switch (dev->dev_blocked) {
1046 bnet_fsend(dir, _("3931 Device %s is BLOCKED. user unmounted.\n"),
1049 case BST_UNMOUNTED_WAITING_FOR_SYSOP:
1050 bnet_fsend(dir, _("3932 Device %s is BLOCKED. user unmounted during wait for media/mount.\n"),
1053 case BST_WAITING_FOR_SYSOP:
1054 bnet_fsend(dir, _("3933 Device %s is BLOCKED waiting for media.\n"),
1057 case BST_DOING_ACQUIRE:
1058 bnet_fsend(dir, _("3934 Device %s is being initialized.\n"),
1061 case BST_WRITING_LABEL:
1062 bnet_fsend(dir, _("3935 Device %s is blocked labeling a Volume.\n"),
1066 bnet_fsend(dir, _("3935 Device %s is blocked for unknown reason.\n"),
1070 } else if (dev->can_read()) {
1071 bnet_fsend(dir, _("3936 Device %s is busy reading.\n"),
1072 dev->print_name());;
1074 bnet_fsend(dir, _("3937 Device %s is busy with %d writer(s).\n"),
1075 dev->print_name(), dev->num_writers);